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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4#include "i40e.h"
5#include "i40e_lan_hmc.h"
6#include "i40e_virtchnl_pf.h"
7
8/*********************notification routines***********************/
9
10/**
11 * i40e_vc_vf_broadcast
12 * @pf: pointer to the PF structure
13 * @v_opcode: operation code
14 * @v_retval: return value
15 * @msg: pointer to the msg buffer
16 * @msglen: msg length
17 *
18 * send a message to all VFs on a given PF
19 **/
20static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
21 enum virtchnl_ops v_opcode,
22 int v_retval, u8 *msg,
23 u16 msglen)
24{
25 struct i40e_hw *hw = &pf->hw;
26 struct i40e_vf *vf = pf->vf;
27 int i;
28
29 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
30 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
31 /* Not all vfs are enabled so skip the ones that are not */
32 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
33 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
34 continue;
35
36 /* Ignore return value on purpose - a given VF may fail, but
37 * we need to keep going and send to all of them
38 */
39 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
40 msg, msglen, NULL);
41 }
42}
43
44/**
45 * i40e_vc_link_speed2mbps
46 * converts i40e_aq_link_speed to integer value of Mbps
47 * @link_speed: the speed to convert
48 *
49 * return the speed as direct value of Mbps.
50 **/
51static u32
52i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)
53{
54 switch (link_speed) {
55 case I40E_LINK_SPEED_100MB:
56 return SPEED_100;
57 case I40E_LINK_SPEED_1GB:
58 return SPEED_1000;
59 case I40E_LINK_SPEED_2_5GB:
60 return SPEED_2500;
61 case I40E_LINK_SPEED_5GB:
62 return SPEED_5000;
63 case I40E_LINK_SPEED_10GB:
64 return SPEED_10000;
65 case I40E_LINK_SPEED_20GB:
66 return SPEED_20000;
67 case I40E_LINK_SPEED_25GB:
68 return SPEED_25000;
69 case I40E_LINK_SPEED_40GB:
70 return SPEED_40000;
71 case I40E_LINK_SPEED_UNKNOWN:
72 return SPEED_UNKNOWN;
73 }
74 return SPEED_UNKNOWN;
75}
76
77/**
78 * i40e_set_vf_link_state
79 * @vf: pointer to the VF structure
80 * @pfe: pointer to PF event structure
81 * @ls: pointer to link status structure
82 *
83 * set a link state on a single vf
84 **/
85static void i40e_set_vf_link_state(struct i40e_vf *vf,
86 struct virtchnl_pf_event *pfe, struct i40e_link_status *ls)
87{
88 u8 link_status = ls->link_info & I40E_AQ_LINK_UP;
89
90 if (vf->link_forced)
91 link_status = vf->link_up;
92
93 if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
94 pfe->event_data.link_event_adv.link_speed = link_status ?
95 i40e_vc_link_speed2mbps(ls->link_speed) : 0;
96 pfe->event_data.link_event_adv.link_status = link_status;
97 } else {
98 pfe->event_data.link_event.link_speed = link_status ?
99 i40e_virtchnl_link_speed(ls->link_speed) : 0;
100 pfe->event_data.link_event.link_status = link_status;
101 }
102}
103
104/**
105 * i40e_vc_notify_vf_link_state
106 * @vf: pointer to the VF structure
107 *
108 * send a link status message to a single VF
109 **/
110static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
111{
112 struct virtchnl_pf_event pfe;
113 struct i40e_pf *pf = vf->pf;
114 struct i40e_hw *hw = &pf->hw;
115 struct i40e_link_status *ls = &pf->hw.phy.link_info;
116 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
117
118 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
119 pfe.severity = PF_EVENT_SEVERITY_INFO;
120
121 i40e_set_vf_link_state(vf, &pfe, ls);
122
123 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
124 0, (u8 *)&pfe, sizeof(pfe), NULL);
125}
126
127/**
128 * i40e_vc_notify_link_state
129 * @pf: pointer to the PF structure
130 *
131 * send a link status message to all VFs on a given PF
132 **/
133void i40e_vc_notify_link_state(struct i40e_pf *pf)
134{
135 int i;
136
137 for (i = 0; i < pf->num_alloc_vfs; i++)
138 i40e_vc_notify_vf_link_state(&pf->vf[i]);
139}
140
141/**
142 * i40e_vc_notify_reset
143 * @pf: pointer to the PF structure
144 *
145 * indicate a pending reset to all VFs on a given PF
146 **/
147void i40e_vc_notify_reset(struct i40e_pf *pf)
148{
149 struct virtchnl_pf_event pfe;
150
151 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
152 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
153 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
154 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
155}
156
157#ifdef CONFIG_PCI_IOV
158void i40e_restore_all_vfs_msi_state(struct pci_dev *pdev)
159{
160 u16 vf_id;
161 u16 pos;
162
163 /* Continue only if this is a PF */
164 if (!pdev->is_physfn)
165 return;
166
167 if (!pci_num_vf(pdev))
168 return;
169
170 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
171 if (pos) {
172 struct pci_dev *vf_dev = NULL;
173
174 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
175 while ((vf_dev = pci_get_device(pdev->vendor, vf_id, vf_dev))) {
176 if (vf_dev->is_virtfn && vf_dev->physfn == pdev)
177 pci_restore_msi_state(vf_dev);
178 }
179 }
180}
181#endif /* CONFIG_PCI_IOV */
182
183/**
184 * i40e_vc_notify_vf_reset
185 * @vf: pointer to the VF structure
186 *
187 * indicate a pending reset to the given VF
188 **/
189void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
190{
191 struct virtchnl_pf_event pfe;
192 int abs_vf_id;
193
194 /* validate the request */
195 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
196 return;
197
198 /* verify if the VF is in either init or active before proceeding */
199 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
200 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
201 return;
202
203 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
204
205 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
206 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
207 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
208 0, (u8 *)&pfe,
209 sizeof(struct virtchnl_pf_event), NULL);
210}
211/***********************misc routines*****************************/
212
213/**
214 * i40e_vc_reset_vf
215 * @vf: pointer to the VF info
216 * @notify_vf: notify vf about reset or not
217 * Reset VF handler.
218 **/
219static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
220{
221 struct i40e_pf *pf = vf->pf;
222 int i;
223
224 if (notify_vf)
225 i40e_vc_notify_vf_reset(vf);
226
227 /* We want to ensure that an actual reset occurs initiated after this
228 * function was called. However, we do not want to wait forever, so
229 * we'll give a reasonable time and print a message if we failed to
230 * ensure a reset.
231 */
232 for (i = 0; i < 20; i++) {
233 /* If PF is in VFs releasing state reset VF is impossible,
234 * so leave it.
235 */
236 if (test_bit(__I40E_VFS_RELEASING, pf->state))
237 return;
238 if (i40e_reset_vf(vf, false))
239 return;
240 usleep_range(10000, 20000);
241 }
242
243 if (notify_vf)
244 dev_warn(&vf->pf->pdev->dev,
245 "Failed to initiate reset for VF %d after 200 milliseconds\n",
246 vf->vf_id);
247 else
248 dev_dbg(&vf->pf->pdev->dev,
249 "Failed to initiate reset for VF %d after 200 milliseconds\n",
250 vf->vf_id);
251}
252
253/**
254 * i40e_vc_isvalid_vsi_id
255 * @vf: pointer to the VF info
256 * @vsi_id: VF relative VSI id
257 *
258 * check for the valid VSI id
259 **/
260static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
261{
262 struct i40e_pf *pf = vf->pf;
263 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
264
265 return (vsi && (vsi->vf_id == vf->vf_id));
266}
267
268/**
269 * i40e_vc_isvalid_queue_id
270 * @vf: pointer to the VF info
271 * @vsi_id: vsi id
272 * @qid: vsi relative queue id
273 *
274 * check for the valid queue id
275 **/
276static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
277 u16 qid)
278{
279 struct i40e_pf *pf = vf->pf;
280 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
281
282 return (vsi && (qid < vsi->alloc_queue_pairs));
283}
284
285/**
286 * i40e_vc_isvalid_vector_id
287 * @vf: pointer to the VF info
288 * @vector_id: VF relative vector id
289 *
290 * check for the valid vector id
291 **/
292static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
293{
294 struct i40e_pf *pf = vf->pf;
295
296 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
297}
298
299/***********************vf resource mgmt routines*****************/
300
301/**
302 * i40e_vc_get_pf_queue_id
303 * @vf: pointer to the VF info
304 * @vsi_id: id of VSI as provided by the FW
305 * @vsi_queue_id: vsi relative queue id
306 *
307 * return PF relative queue id
308 **/
309static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
310 u8 vsi_queue_id)
311{
312 struct i40e_pf *pf = vf->pf;
313 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
314 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
315
316 if (!vsi)
317 return pf_queue_id;
318
319 if (le16_to_cpu(vsi->info.mapping_flags) &
320 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
321 pf_queue_id =
322 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
323 else
324 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
325 vsi_queue_id;
326
327 return pf_queue_id;
328}
329
330/**
331 * i40e_get_real_pf_qid
332 * @vf: pointer to the VF info
333 * @vsi_id: vsi id
334 * @queue_id: queue number
335 *
336 * wrapper function to get pf_queue_id handling ADq code as well
337 **/
338static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
339{
340 int i;
341
342 if (vf->adq_enabled) {
343 /* Although VF considers all the queues(can be 1 to 16) as its
344 * own but they may actually belong to different VSIs(up to 4).
345 * We need to find which queues belongs to which VSI.
346 */
347 for (i = 0; i < vf->num_tc; i++) {
348 if (queue_id < vf->ch[i].num_qps) {
349 vsi_id = vf->ch[i].vsi_id;
350 break;
351 }
352 /* find right queue id which is relative to a
353 * given VSI.
354 */
355 queue_id -= vf->ch[i].num_qps;
356 }
357 }
358
359 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
360}
361
362/**
363 * i40e_config_irq_link_list
364 * @vf: pointer to the VF info
365 * @vsi_id: id of VSI as given by the FW
366 * @vecmap: irq map info
367 *
368 * configure irq link list from the map
369 **/
370static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
371 struct virtchnl_vector_map *vecmap)
372{
373 unsigned long linklistmap = 0, tempmap;
374 struct i40e_pf *pf = vf->pf;
375 struct i40e_hw *hw = &pf->hw;
376 u16 vsi_queue_id, pf_queue_id;
377 enum i40e_queue_type qtype;
378 u16 next_q, vector_id, size;
379 u32 reg, reg_idx;
380 u16 itr_idx = 0;
381
382 vector_id = vecmap->vector_id;
383 /* setup the head */
384 if (0 == vector_id)
385 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
386 else
387 reg_idx = I40E_VPINT_LNKLSTN(
388 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
389 (vector_id - 1));
390
391 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
392 /* Special case - No queues mapped on this vector */
393 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
394 goto irq_list_done;
395 }
396 tempmap = vecmap->rxq_map;
397 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
398 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
399 vsi_queue_id));
400 }
401
402 tempmap = vecmap->txq_map;
403 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
404 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
405 vsi_queue_id + 1));
406 }
407
408 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
409 next_q = find_first_bit(&linklistmap, size);
410 if (unlikely(next_q == size))
411 goto irq_list_done;
412
413 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
414 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
415 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
416 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
417
418 wr32(hw, reg_idx, reg);
419
420 while (next_q < size) {
421 switch (qtype) {
422 case I40E_QUEUE_TYPE_RX:
423 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
424 itr_idx = vecmap->rxitr_idx;
425 break;
426 case I40E_QUEUE_TYPE_TX:
427 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
428 itr_idx = vecmap->txitr_idx;
429 break;
430 default:
431 break;
432 }
433
434 next_q = find_next_bit(&linklistmap, size, next_q + 1);
435 if (next_q < size) {
436 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
437 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
438 pf_queue_id = i40e_get_real_pf_qid(vf,
439 vsi_id,
440 vsi_queue_id);
441 } else {
442 pf_queue_id = I40E_QUEUE_END_OF_LIST;
443 qtype = 0;
444 }
445
446 /* format for the RQCTL & TQCTL regs is same */
447 reg = (vector_id) |
448 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
449 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
450 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
451 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
452 wr32(hw, reg_idx, reg);
453 }
454
455 /* if the vf is running in polling mode and using interrupt zero,
456 * need to disable auto-mask on enabling zero interrupt for VFs.
457 */
458 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
459 (vector_id == 0)) {
460 reg = rd32(hw, I40E_GLINT_CTL);
461 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
462 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
463 wr32(hw, I40E_GLINT_CTL, reg);
464 }
465 }
466
467irq_list_done:
468 i40e_flush(hw);
469}
470
471/**
472 * i40e_release_rdma_qvlist
473 * @vf: pointer to the VF.
474 *
475 **/
476static void i40e_release_rdma_qvlist(struct i40e_vf *vf)
477{
478 struct i40e_pf *pf = vf->pf;
479 struct virtchnl_rdma_qvlist_info *qvlist_info = vf->qvlist_info;
480 u32 msix_vf;
481 u32 i;
482
483 if (!vf->qvlist_info)
484 return;
485
486 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
487 for (i = 0; i < qvlist_info->num_vectors; i++) {
488 struct virtchnl_rdma_qv_info *qv_info;
489 u32 next_q_index, next_q_type;
490 struct i40e_hw *hw = &pf->hw;
491 u32 v_idx, reg_idx, reg;
492
493 qv_info = &qvlist_info->qv_info[i];
494 v_idx = qv_info->v_idx;
495 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
496 /* Figure out the queue after CEQ and make that the
497 * first queue.
498 */
499 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
500 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
501 next_q_index = FIELD_GET(I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK,
502 reg);
503 next_q_type = FIELD_GET(I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK,
504 reg);
505
506 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
507 reg = (next_q_index &
508 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
509 (next_q_type <<
510 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
511
512 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
513 }
514 }
515 kfree(vf->qvlist_info);
516 vf->qvlist_info = NULL;
517}
518
519/**
520 * i40e_config_rdma_qvlist
521 * @vf: pointer to the VF info
522 * @qvlist_info: queue and vector list
523 *
524 * Return 0 on success or < 0 on error
525 **/
526static int
527i40e_config_rdma_qvlist(struct i40e_vf *vf,
528 struct virtchnl_rdma_qvlist_info *qvlist_info)
529{
530 struct i40e_pf *pf = vf->pf;
531 struct i40e_hw *hw = &pf->hw;
532 struct virtchnl_rdma_qv_info *qv_info;
533 u32 v_idx, i, reg_idx, reg;
534 u32 next_q_idx, next_q_type;
535 size_t size;
536 u32 msix_vf;
537 int ret = 0;
538
539 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
540
541 if (qvlist_info->num_vectors > msix_vf) {
542 dev_warn(&pf->pdev->dev,
543 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
544 qvlist_info->num_vectors,
545 msix_vf);
546 ret = -EINVAL;
547 goto err_out;
548 }
549
550 kfree(vf->qvlist_info);
551 size = virtchnl_struct_size(vf->qvlist_info, qv_info,
552 qvlist_info->num_vectors);
553 vf->qvlist_info = kzalloc(size, GFP_KERNEL);
554 if (!vf->qvlist_info) {
555 ret = -ENOMEM;
556 goto err_out;
557 }
558 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
559
560 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
561 for (i = 0; i < qvlist_info->num_vectors; i++) {
562 qv_info = &qvlist_info->qv_info[i];
563
564 /* Validate vector id belongs to this vf */
565 if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) {
566 ret = -EINVAL;
567 goto err_free;
568 }
569
570 v_idx = qv_info->v_idx;
571
572 vf->qvlist_info->qv_info[i] = *qv_info;
573
574 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
575 /* We might be sharing the interrupt, so get the first queue
576 * index and type, push it down the list by adding the new
577 * queue on top. Also link it with the new queue in CEQCTL.
578 */
579 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
580 next_q_idx = FIELD_GET(I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK,
581 reg);
582 next_q_type = FIELD_GET(I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK,
583 reg);
584
585 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
586 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
587 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
588 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
589 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
590 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
591 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
592 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
593
594 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
595 reg = (qv_info->ceq_idx &
596 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
597 (I40E_QUEUE_TYPE_PE_CEQ <<
598 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
599 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
600 }
601
602 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
603 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
604 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
605 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
606
607 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
608 }
609 }
610
611 return 0;
612err_free:
613 kfree(vf->qvlist_info);
614 vf->qvlist_info = NULL;
615err_out:
616 return ret;
617}
618
619/**
620 * i40e_config_vsi_tx_queue
621 * @vf: pointer to the VF info
622 * @vsi_id: id of VSI as provided by the FW
623 * @vsi_queue_id: vsi relative queue index
624 * @info: config. info
625 *
626 * configure tx queue
627 **/
628static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
629 u16 vsi_queue_id,
630 struct virtchnl_txq_info *info)
631{
632 struct i40e_pf *pf = vf->pf;
633 struct i40e_hw *hw = &pf->hw;
634 struct i40e_hmc_obj_txq tx_ctx;
635 struct i40e_vsi *vsi;
636 u16 pf_queue_id;
637 u32 qtx_ctl;
638 int ret = 0;
639
640 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
641 ret = -ENOENT;
642 goto error_context;
643 }
644 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
645 vsi = i40e_find_vsi_from_id(pf, vsi_id);
646 if (!vsi) {
647 ret = -ENOENT;
648 goto error_context;
649 }
650
651 /* clear the context structure first */
652 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
653
654 /* only set the required fields */
655 tx_ctx.base = info->dma_ring_addr / 128;
656 tx_ctx.qlen = info->ring_len;
657 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
658 tx_ctx.rdylist_act = 0;
659 tx_ctx.head_wb_ena = info->headwb_enabled;
660 tx_ctx.head_wb_addr = info->dma_headwb_addr;
661
662 /* clear the context in the HMC */
663 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
664 if (ret) {
665 dev_err(&pf->pdev->dev,
666 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
667 pf_queue_id, ret);
668 ret = -ENOENT;
669 goto error_context;
670 }
671
672 /* set the context in the HMC */
673 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
674 if (ret) {
675 dev_err(&pf->pdev->dev,
676 "Failed to set VF LAN Tx queue context %d error: %d\n",
677 pf_queue_id, ret);
678 ret = -ENOENT;
679 goto error_context;
680 }
681
682 /* associate this queue with the PCI VF function */
683 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
684 qtx_ctl |= FIELD_PREP(I40E_QTX_CTL_PF_INDX_MASK, hw->pf_id);
685 qtx_ctl |= FIELD_PREP(I40E_QTX_CTL_VFVM_INDX_MASK,
686 vf->vf_id + hw->func_caps.vf_base_id);
687 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
688 i40e_flush(hw);
689
690error_context:
691 return ret;
692}
693
694/**
695 * i40e_config_vsi_rx_queue
696 * @vf: pointer to the VF info
697 * @vsi_id: id of VSI as provided by the FW
698 * @vsi_queue_id: vsi relative queue index
699 * @info: config. info
700 *
701 * configure rx queue
702 **/
703static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
704 u16 vsi_queue_id,
705 struct virtchnl_rxq_info *info)
706{
707 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
708 struct i40e_pf *pf = vf->pf;
709 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
710 struct i40e_hw *hw = &pf->hw;
711 struct i40e_hmc_obj_rxq rx_ctx;
712 int ret = 0;
713
714 /* clear the context structure first */
715 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
716
717 /* only set the required fields */
718 rx_ctx.base = info->dma_ring_addr / 128;
719 rx_ctx.qlen = info->ring_len;
720
721 if (info->splithdr_enabled) {
722 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
723 I40E_RX_SPLIT_IP |
724 I40E_RX_SPLIT_TCP_UDP |
725 I40E_RX_SPLIT_SCTP;
726 /* header length validation */
727 if (info->hdr_size > ((2 * 1024) - 64)) {
728 ret = -EINVAL;
729 goto error_param;
730 }
731 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
732
733 /* set split mode 10b */
734 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
735 }
736
737 /* databuffer length validation */
738 if (info->databuffer_size > ((16 * 1024) - 128)) {
739 ret = -EINVAL;
740 goto error_param;
741 }
742 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
743
744 /* max pkt. length validation */
745 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
746 ret = -EINVAL;
747 goto error_param;
748 }
749 rx_ctx.rxmax = info->max_pkt_size;
750
751 /* if port VLAN is configured increase the max packet size */
752 if (vsi->info.pvid)
753 rx_ctx.rxmax += VLAN_HLEN;
754
755 /* enable 32bytes desc always */
756 rx_ctx.dsize = 1;
757
758 /* default values */
759 rx_ctx.lrxqthresh = 1;
760 rx_ctx.crcstrip = 1;
761 rx_ctx.prefena = 1;
762 rx_ctx.l2tsel = 1;
763
764 /* clear the context in the HMC */
765 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
766 if (ret) {
767 dev_err(&pf->pdev->dev,
768 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
769 pf_queue_id, ret);
770 ret = -ENOENT;
771 goto error_param;
772 }
773
774 /* set the context in the HMC */
775 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
776 if (ret) {
777 dev_err(&pf->pdev->dev,
778 "Failed to set VF LAN Rx queue context %d error: %d\n",
779 pf_queue_id, ret);
780 ret = -ENOENT;
781 goto error_param;
782 }
783
784error_param:
785 return ret;
786}
787
788/**
789 * i40e_alloc_vsi_res
790 * @vf: pointer to the VF info
791 * @idx: VSI index, applies only for ADq mode, zero otherwise
792 *
793 * alloc VF vsi context & resources
794 **/
795static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
796{
797 struct i40e_mac_filter *f = NULL;
798 struct i40e_pf *pf = vf->pf;
799 struct i40e_vsi *vsi;
800 u64 max_tx_rate = 0;
801 int ret = 0;
802
803 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid,
804 vf->vf_id);
805
806 if (!vsi) {
807 dev_err(&pf->pdev->dev,
808 "add vsi failed for VF %d, aq_err %d\n",
809 vf->vf_id, pf->hw.aq.asq_last_status);
810 ret = -ENOENT;
811 goto error_alloc_vsi_res;
812 }
813
814 if (!idx) {
815 u64 hena = i40e_pf_get_default_rss_hena(pf);
816 u8 broadcast[ETH_ALEN];
817
818 vf->lan_vsi_idx = vsi->idx;
819 vf->lan_vsi_id = vsi->id;
820 /* If the port VLAN has been configured and then the
821 * VF driver was removed then the VSI port VLAN
822 * configuration was destroyed. Check if there is
823 * a port VLAN and restore the VSI configuration if
824 * needed.
825 */
826 if (vf->port_vlan_id)
827 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
828
829 spin_lock_bh(&vsi->mac_filter_hash_lock);
830 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
831 f = i40e_add_mac_filter(vsi,
832 vf->default_lan_addr.addr);
833 if (!f)
834 dev_info(&pf->pdev->dev,
835 "Could not add MAC filter %pM for VF %d\n",
836 vf->default_lan_addr.addr, vf->vf_id);
837 }
838 eth_broadcast_addr(broadcast);
839 f = i40e_add_mac_filter(vsi, broadcast);
840 if (!f)
841 dev_info(&pf->pdev->dev,
842 "Could not allocate VF broadcast filter\n");
843 spin_unlock_bh(&vsi->mac_filter_hash_lock);
844 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
845 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
846 /* program mac filter only for VF VSI */
847 ret = i40e_sync_vsi_filters(vsi);
848 if (ret)
849 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
850 }
851
852 /* storing VSI index and id for ADq and don't apply the mac filter */
853 if (vf->adq_enabled) {
854 vf->ch[idx].vsi_idx = vsi->idx;
855 vf->ch[idx].vsi_id = vsi->id;
856 }
857
858 /* Set VF bandwidth if specified */
859 if (vf->tx_rate) {
860 max_tx_rate = vf->tx_rate;
861 } else if (vf->ch[idx].max_tx_rate) {
862 max_tx_rate = vf->ch[idx].max_tx_rate;
863 }
864
865 if (max_tx_rate) {
866 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
867 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
868 max_tx_rate, 0, NULL);
869 if (ret)
870 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
871 vf->vf_id, ret);
872 }
873
874error_alloc_vsi_res:
875 return ret;
876}
877
878/**
879 * i40e_map_pf_queues_to_vsi
880 * @vf: pointer to the VF info
881 *
882 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
883 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
884 **/
885static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
886{
887 struct i40e_pf *pf = vf->pf;
888 struct i40e_hw *hw = &pf->hw;
889 u32 reg, num_tc = 1; /* VF has at least one traffic class */
890 u16 vsi_id, qps;
891 int i, j;
892
893 if (vf->adq_enabled)
894 num_tc = vf->num_tc;
895
896 for (i = 0; i < num_tc; i++) {
897 if (vf->adq_enabled) {
898 qps = vf->ch[i].num_qps;
899 vsi_id = vf->ch[i].vsi_id;
900 } else {
901 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
902 vsi_id = vf->lan_vsi_id;
903 }
904
905 for (j = 0; j < 7; j++) {
906 if (j * 2 >= qps) {
907 /* end of list */
908 reg = 0x07FF07FF;
909 } else {
910 u16 qid = i40e_vc_get_pf_queue_id(vf,
911 vsi_id,
912 j * 2);
913 reg = qid;
914 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
915 (j * 2) + 1);
916 reg |= qid << 16;
917 }
918 i40e_write_rx_ctl(hw,
919 I40E_VSILAN_QTABLE(j, vsi_id),
920 reg);
921 }
922 }
923}
924
925/**
926 * i40e_map_pf_to_vf_queues
927 * @vf: pointer to the VF info
928 *
929 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
930 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
931 **/
932static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
933{
934 struct i40e_pf *pf = vf->pf;
935 struct i40e_hw *hw = &pf->hw;
936 u32 reg, total_qps = 0;
937 u32 qps, num_tc = 1; /* VF has at least one traffic class */
938 u16 vsi_id, qid;
939 int i, j;
940
941 if (vf->adq_enabled)
942 num_tc = vf->num_tc;
943
944 for (i = 0; i < num_tc; i++) {
945 if (vf->adq_enabled) {
946 qps = vf->ch[i].num_qps;
947 vsi_id = vf->ch[i].vsi_id;
948 } else {
949 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
950 vsi_id = vf->lan_vsi_id;
951 }
952
953 for (j = 0; j < qps; j++) {
954 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
955
956 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
957 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
958 reg);
959 total_qps++;
960 }
961 }
962}
963
964/**
965 * i40e_enable_vf_mappings
966 * @vf: pointer to the VF info
967 *
968 * enable VF mappings
969 **/
970static void i40e_enable_vf_mappings(struct i40e_vf *vf)
971{
972 struct i40e_pf *pf = vf->pf;
973 struct i40e_hw *hw = &pf->hw;
974 u32 reg;
975
976 /* Tell the hardware we're using noncontiguous mapping. HW requires
977 * that VF queues be mapped using this method, even when they are
978 * contiguous in real life
979 */
980 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
981 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
982
983 /* enable VF vplan_qtable mappings */
984 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
985 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
986
987 i40e_map_pf_to_vf_queues(vf);
988 i40e_map_pf_queues_to_vsi(vf);
989
990 i40e_flush(hw);
991}
992
993/**
994 * i40e_disable_vf_mappings
995 * @vf: pointer to the VF info
996 *
997 * disable VF mappings
998 **/
999static void i40e_disable_vf_mappings(struct i40e_vf *vf)
1000{
1001 struct i40e_pf *pf = vf->pf;
1002 struct i40e_hw *hw = &pf->hw;
1003 int i;
1004
1005 /* disable qp mappings */
1006 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
1007 for (i = 0; i < I40E_MAX_VSI_QP; i++)
1008 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
1009 I40E_QUEUE_END_OF_LIST);
1010 i40e_flush(hw);
1011}
1012
1013/**
1014 * i40e_free_vf_res
1015 * @vf: pointer to the VF info
1016 *
1017 * free VF resources
1018 **/
1019static void i40e_free_vf_res(struct i40e_vf *vf)
1020{
1021 struct i40e_pf *pf = vf->pf;
1022 struct i40e_hw *hw = &pf->hw;
1023 u32 reg_idx, reg;
1024 int i, j, msix_vf;
1025
1026 /* Start by disabling VF's configuration API to prevent the OS from
1027 * accessing the VF's VSI after it's freed / invalidated.
1028 */
1029 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1030
1031 /* It's possible the VF had requeuested more queues than the default so
1032 * do the accounting here when we're about to free them.
1033 */
1034 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
1035 pf->queues_left += vf->num_queue_pairs -
1036 I40E_DEFAULT_QUEUES_PER_VF;
1037 }
1038
1039 /* free vsi & disconnect it from the parent uplink */
1040 if (vf->lan_vsi_idx) {
1041 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
1042 vf->lan_vsi_idx = 0;
1043 vf->lan_vsi_id = 0;
1044 }
1045
1046 /* do the accounting and remove additional ADq VSI's */
1047 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
1048 for (j = 0; j < vf->num_tc; j++) {
1049 /* At this point VSI0 is already released so don't
1050 * release it again and only clear their values in
1051 * structure variables
1052 */
1053 if (j)
1054 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
1055 vf->ch[j].vsi_idx = 0;
1056 vf->ch[j].vsi_id = 0;
1057 }
1058 }
1059 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
1060
1061 /* disable interrupts so the VF starts in a known state */
1062 for (i = 0; i < msix_vf; i++) {
1063 /* format is same for both registers */
1064 if (0 == i)
1065 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
1066 else
1067 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
1068 (vf->vf_id))
1069 + (i - 1));
1070 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
1071 i40e_flush(hw);
1072 }
1073
1074 /* clear the irq settings */
1075 for (i = 0; i < msix_vf; i++) {
1076 /* format is same for both registers */
1077 if (0 == i)
1078 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
1079 else
1080 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
1081 (vf->vf_id))
1082 + (i - 1));
1083 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1084 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1085 wr32(hw, reg_idx, reg);
1086 i40e_flush(hw);
1087 }
1088 /* reset some of the state variables keeping track of the resources */
1089 vf->num_queue_pairs = 0;
1090 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1091 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1092}
1093
1094/**
1095 * i40e_alloc_vf_res
1096 * @vf: pointer to the VF info
1097 *
1098 * allocate VF resources
1099 **/
1100static int i40e_alloc_vf_res(struct i40e_vf *vf)
1101{
1102 struct i40e_pf *pf = vf->pf;
1103 int total_queue_pairs = 0;
1104 int ret, idx;
1105
1106 if (vf->num_req_queues &&
1107 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1108 pf->num_vf_qps = vf->num_req_queues;
1109 else
1110 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1111
1112 /* allocate hw vsi context & associated resources */
1113 ret = i40e_alloc_vsi_res(vf, 0);
1114 if (ret)
1115 goto error_alloc;
1116 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1117
1118 /* allocate additional VSIs based on tc information for ADq */
1119 if (vf->adq_enabled) {
1120 if (pf->queues_left >=
1121 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1122 /* TC 0 always belongs to VF VSI */
1123 for (idx = 1; idx < vf->num_tc; idx++) {
1124 ret = i40e_alloc_vsi_res(vf, idx);
1125 if (ret)
1126 goto error_alloc;
1127 }
1128 /* send correct number of queues */
1129 total_queue_pairs = I40E_MAX_VF_QUEUES;
1130 } else {
1131 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1132 vf->vf_id);
1133 vf->adq_enabled = false;
1134 }
1135 }
1136
1137 /* We account for each VF to get a default number of queue pairs. If
1138 * the VF has now requested more, we need to account for that to make
1139 * certain we never request more queues than we actually have left in
1140 * HW.
1141 */
1142 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1143 pf->queues_left -=
1144 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1145
1146 if (vf->trusted)
1147 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1148 else
1149 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1150
1151 /* store the total qps number for the runtime
1152 * VF req validation
1153 */
1154 vf->num_queue_pairs = total_queue_pairs;
1155
1156 /* VF is now completely initialized */
1157 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1158
1159error_alloc:
1160 if (ret)
1161 i40e_free_vf_res(vf);
1162
1163 return ret;
1164}
1165
1166#define VF_DEVICE_STATUS 0xAA
1167#define VF_TRANS_PENDING_MASK 0x20
1168/**
1169 * i40e_quiesce_vf_pci
1170 * @vf: pointer to the VF structure
1171 *
1172 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1173 * if the transactions never clear.
1174 **/
1175static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1176{
1177 struct i40e_pf *pf = vf->pf;
1178 struct i40e_hw *hw = &pf->hw;
1179 int vf_abs_id, i;
1180 u32 reg;
1181
1182 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1183
1184 wr32(hw, I40E_PF_PCI_CIAA,
1185 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1186 for (i = 0; i < 100; i++) {
1187 reg = rd32(hw, I40E_PF_PCI_CIAD);
1188 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1189 return 0;
1190 udelay(1);
1191 }
1192 return -EIO;
1193}
1194
1195/**
1196 * __i40e_getnum_vf_vsi_vlan_filters
1197 * @vsi: pointer to the vsi
1198 *
1199 * called to get the number of VLANs offloaded on this VF
1200 **/
1201static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1202{
1203 struct i40e_mac_filter *f;
1204 u16 num_vlans = 0, bkt;
1205
1206 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1207 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1208 num_vlans++;
1209 }
1210
1211 return num_vlans;
1212}
1213
1214/**
1215 * i40e_getnum_vf_vsi_vlan_filters
1216 * @vsi: pointer to the vsi
1217 *
1218 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
1219 **/
1220static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1221{
1222 int num_vlans;
1223
1224 spin_lock_bh(&vsi->mac_filter_hash_lock);
1225 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1226 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1227
1228 return num_vlans;
1229}
1230
1231/**
1232 * i40e_get_vlan_list_sync
1233 * @vsi: pointer to the VSI
1234 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller
1235 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
1236 * This array is allocated here, but has to be freed in caller.
1237 *
1238 * Called to get number of VLANs and VLAN list present in mac_filter_hash.
1239 **/
1240static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
1241 s16 **vlan_list)
1242{
1243 struct i40e_mac_filter *f;
1244 int i = 0;
1245 int bkt;
1246
1247 spin_lock_bh(&vsi->mac_filter_hash_lock);
1248 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1249 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC);
1250 if (!(*vlan_list))
1251 goto err;
1252
1253 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1254 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1255 continue;
1256 (*vlan_list)[i++] = f->vlan;
1257 }
1258err:
1259 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1260}
1261
1262/**
1263 * i40e_set_vsi_promisc
1264 * @vf: pointer to the VF struct
1265 * @seid: VSI number
1266 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
1267 * for a given VLAN
1268 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
1269 * for a given VLAN
1270 * @vl: List of VLANs - apply filter for given VLANs
1271 * @num_vlans: Number of elements in @vl
1272 **/
1273static int
1274i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
1275 bool unicast_enable, s16 *vl, u16 num_vlans)
1276{
1277 struct i40e_pf *pf = vf->pf;
1278 struct i40e_hw *hw = &pf->hw;
1279 int aq_ret, aq_tmp = 0;
1280 int i;
1281
1282 /* No VLAN to set promisc on, set on VSI */
1283 if (!num_vlans || !vl) {
1284 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid,
1285 multi_enable,
1286 NULL);
1287 if (aq_ret) {
1288 int aq_err = pf->hw.aq.asq_last_status;
1289
1290 dev_err(&pf->pdev->dev,
1291 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1292 vf->vf_id,
1293 ERR_PTR(aq_ret),
1294 i40e_aq_str(&pf->hw, aq_err));
1295
1296 return aq_ret;
1297 }
1298
1299 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid,
1300 unicast_enable,
1301 NULL, true);
1302
1303 if (aq_ret) {
1304 int aq_err = pf->hw.aq.asq_last_status;
1305
1306 dev_err(&pf->pdev->dev,
1307 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1308 vf->vf_id,
1309 ERR_PTR(aq_ret),
1310 i40e_aq_str(&pf->hw, aq_err));
1311 }
1312
1313 return aq_ret;
1314 }
1315
1316 for (i = 0; i < num_vlans; i++) {
1317 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
1318 multi_enable,
1319 vl[i], NULL);
1320 if (aq_ret) {
1321 int aq_err = pf->hw.aq.asq_last_status;
1322
1323 dev_err(&pf->pdev->dev,
1324 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1325 vf->vf_id,
1326 ERR_PTR(aq_ret),
1327 i40e_aq_str(&pf->hw, aq_err));
1328
1329 if (!aq_tmp)
1330 aq_tmp = aq_ret;
1331 }
1332
1333 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
1334 unicast_enable,
1335 vl[i], NULL);
1336 if (aq_ret) {
1337 int aq_err = pf->hw.aq.asq_last_status;
1338
1339 dev_err(&pf->pdev->dev,
1340 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1341 vf->vf_id,
1342 ERR_PTR(aq_ret),
1343 i40e_aq_str(&pf->hw, aq_err));
1344
1345 if (!aq_tmp)
1346 aq_tmp = aq_ret;
1347 }
1348 }
1349
1350 if (aq_tmp)
1351 aq_ret = aq_tmp;
1352
1353 return aq_ret;
1354}
1355
1356/**
1357 * i40e_config_vf_promiscuous_mode
1358 * @vf: pointer to the VF info
1359 * @vsi_id: VSI id
1360 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1361 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1362 *
1363 * Called from the VF to configure the promiscuous mode of
1364 * VF vsis and from the VF reset path to reset promiscuous mode.
1365 **/
1366static int i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1367 u16 vsi_id,
1368 bool allmulti,
1369 bool alluni)
1370{
1371 struct i40e_pf *pf = vf->pf;
1372 struct i40e_vsi *vsi;
1373 int aq_ret = 0;
1374 u16 num_vlans;
1375 s16 *vl;
1376
1377 vsi = i40e_find_vsi_from_id(pf, vsi_id);
1378 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1379 return -EINVAL;
1380
1381 if (vf->port_vlan_id) {
1382 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti,
1383 alluni, &vf->port_vlan_id, 1);
1384 return aq_ret;
1385 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1386 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl);
1387
1388 if (!vl)
1389 return -ENOMEM;
1390
1391 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1392 vl, num_vlans);
1393 kfree(vl);
1394 return aq_ret;
1395 }
1396
1397 /* no VLANs to set on, set on VSI */
1398 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1399 NULL, 0);
1400 return aq_ret;
1401}
1402
1403/**
1404 * i40e_sync_vfr_reset
1405 * @hw: pointer to hw struct
1406 * @vf_id: VF identifier
1407 *
1408 * Before trigger hardware reset, we need to know if no other process has
1409 * reserved the hardware for any reset operations. This check is done by
1410 * examining the status of the RSTAT1 register used to signal the reset.
1411 **/
1412static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1413{
1414 u32 reg;
1415 int i;
1416
1417 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1418 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1419 I40E_VFINT_ICR0_ADMINQ_MASK;
1420 if (reg)
1421 return 0;
1422
1423 usleep_range(100, 200);
1424 }
1425
1426 return -EAGAIN;
1427}
1428
1429/**
1430 * i40e_trigger_vf_reset
1431 * @vf: pointer to the VF structure
1432 * @flr: VFLR was issued or not
1433 *
1434 * Trigger hardware to start a reset for a particular VF. Expects the caller
1435 * to wait the proper amount of time to allow hardware to reset the VF before
1436 * it cleans up and restores VF functionality.
1437 **/
1438static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1439{
1440 struct i40e_pf *pf = vf->pf;
1441 struct i40e_hw *hw = &pf->hw;
1442 u32 reg, reg_idx, bit_idx;
1443 bool vf_active;
1444 u32 radq;
1445
1446 /* warn the VF */
1447 vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1448
1449 /* Disable VF's configuration API during reset. The flag is re-enabled
1450 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1451 * It's normally disabled in i40e_free_vf_res(), but it's safer
1452 * to do it earlier to give some time to finish to any VF config
1453 * functions that may still be running at this point.
1454 */
1455 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1456
1457 /* In the case of a VFLR, the HW has already reset the VF and we
1458 * just need to clean up, so don't hit the VFRTRIG register.
1459 */
1460 if (!flr) {
1461 /* Sync VFR reset before trigger next one */
1462 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1463 I40E_VFINT_ICR0_ADMINQ_MASK;
1464 if (vf_active && !radq)
1465 /* waiting for finish reset by virtual driver */
1466 if (i40e_sync_vfr_reset(hw, vf->vf_id))
1467 dev_info(&pf->pdev->dev,
1468 "Reset VF %d never finished\n",
1469 vf->vf_id);
1470
1471 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1472 * in progress state in rstat1 register.
1473 */
1474 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1475 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1476 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1477 i40e_flush(hw);
1478 }
1479 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1480 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1481 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1482 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1483 i40e_flush(hw);
1484
1485 if (i40e_quiesce_vf_pci(vf))
1486 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1487 vf->vf_id);
1488}
1489
1490/**
1491 * i40e_cleanup_reset_vf
1492 * @vf: pointer to the VF structure
1493 *
1494 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1495 * have verified whether the reset is finished properly, and ensure the
1496 * minimum amount of wait time has passed.
1497 **/
1498static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1499{
1500 struct i40e_pf *pf = vf->pf;
1501 struct i40e_hw *hw = &pf->hw;
1502 u32 reg;
1503
1504 /* disable promisc modes in case they were enabled */
1505 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1506
1507 /* free VF resources to begin resetting the VSI state */
1508 i40e_free_vf_res(vf);
1509
1510 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1511 * By doing this we allow HW to access VF memory at any point. If we
1512 * did it any sooner, HW could access memory while it was being freed
1513 * in i40e_free_vf_res(), causing an IOMMU fault.
1514 *
1515 * On the other hand, this needs to be done ASAP, because the VF driver
1516 * is waiting for this to happen and may report a timeout. It's
1517 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1518 * it.
1519 */
1520 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1521 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1522 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1523
1524 /* reallocate VF resources to finish resetting the VSI state */
1525 if (!i40e_alloc_vf_res(vf)) {
1526 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1527 i40e_enable_vf_mappings(vf);
1528 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1529 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1530 /* Do not notify the client during VF init */
1531 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1532 &vf->vf_states))
1533 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1534 vf->num_vlan = 0;
1535 }
1536
1537 /* Tell the VF driver the reset is done. This needs to be done only
1538 * after VF has been fully initialized, because the VF driver may
1539 * request resources immediately after setting this flag.
1540 */
1541 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1542}
1543
1544/**
1545 * i40e_reset_vf
1546 * @vf: pointer to the VF structure
1547 * @flr: VFLR was issued or not
1548 *
1549 * Returns true if the VF is in reset, resets successfully, or resets
1550 * are disabled and false otherwise.
1551 **/
1552bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1553{
1554 struct i40e_pf *pf = vf->pf;
1555 struct i40e_hw *hw = &pf->hw;
1556 bool rsd = false;
1557 u32 reg;
1558 int i;
1559
1560 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1561 return true;
1562
1563 /* Bail out if VFs are disabled. */
1564 if (test_bit(__I40E_VF_DISABLE, pf->state))
1565 return true;
1566
1567 /* If VF is being reset already we don't need to continue. */
1568 if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1569 return true;
1570
1571 i40e_trigger_vf_reset(vf, flr);
1572
1573 /* poll VPGEN_VFRSTAT reg to make sure
1574 * that reset is complete
1575 */
1576 for (i = 0; i < 10; i++) {
1577 /* VF reset requires driver to first reset the VF and then
1578 * poll the status register to make sure that the reset
1579 * completed successfully. Due to internal HW FIFO flushes,
1580 * we must wait 10ms before the register will be valid.
1581 */
1582 usleep_range(10000, 20000);
1583 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1584 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1585 rsd = true;
1586 break;
1587 }
1588 }
1589
1590 if (flr)
1591 usleep_range(10000, 20000);
1592
1593 if (!rsd)
1594 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1595 vf->vf_id);
1596 usleep_range(10000, 20000);
1597
1598 /* On initial reset, we don't have any queues to disable */
1599 if (vf->lan_vsi_idx != 0)
1600 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1601
1602 i40e_cleanup_reset_vf(vf);
1603
1604 i40e_flush(hw);
1605 usleep_range(20000, 40000);
1606 clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states);
1607
1608 return true;
1609}
1610
1611/**
1612 * i40e_reset_all_vfs
1613 * @pf: pointer to the PF structure
1614 * @flr: VFLR was issued or not
1615 *
1616 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1617 * VF, then do all the waiting in one chunk, and finally finish restoring each
1618 * VF after the wait. This is useful during PF routines which need to reset
1619 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1620 *
1621 * Returns true if any VFs were reset, and false otherwise.
1622 **/
1623bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1624{
1625 struct i40e_hw *hw = &pf->hw;
1626 struct i40e_vf *vf;
1627 u32 reg;
1628 int i;
1629
1630 /* If we don't have any VFs, then there is nothing to reset */
1631 if (!pf->num_alloc_vfs)
1632 return false;
1633
1634 /* If VFs have been disabled, there is no need to reset */
1635 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1636 return false;
1637
1638 /* Begin reset on all VFs at once */
1639 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1640 /* If VF is being reset no need to trigger reset again */
1641 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1642 i40e_trigger_vf_reset(vf, flr);
1643 }
1644
1645 /* HW requires some time to make sure it can flush the FIFO for a VF
1646 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1647 * sequence to make sure that it has completed. We'll keep track of
1648 * the VFs using a simple iterator that increments once that VF has
1649 * finished resetting.
1650 */
1651 for (i = 0, vf = &pf->vf[0]; i < 10 && vf < &pf->vf[pf->num_alloc_vfs]; ++i) {
1652 usleep_range(10000, 20000);
1653
1654 /* Check each VF in sequence, beginning with the VF to fail
1655 * the previous check.
1656 */
1657 while (vf < &pf->vf[pf->num_alloc_vfs]) {
1658 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
1659 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1660 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1661 break;
1662 }
1663
1664 /* If the current VF has finished resetting, move on
1665 * to the next VF in sequence.
1666 */
1667 ++vf;
1668 }
1669 }
1670
1671 if (flr)
1672 usleep_range(10000, 20000);
1673
1674 /* Display a warning if at least one VF didn't manage to reset in
1675 * time, but continue on with the operation.
1676 */
1677 if (vf < &pf->vf[pf->num_alloc_vfs])
1678 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1679 vf->vf_id);
1680 usleep_range(10000, 20000);
1681
1682 /* Begin disabling all the rings associated with VFs, but do not wait
1683 * between each VF.
1684 */
1685 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1686 /* On initial reset, we don't have any queues to disable */
1687 if (vf->lan_vsi_idx == 0)
1688 continue;
1689
1690 /* If VF is reset in another thread just continue */
1691 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1692 continue;
1693
1694 i40e_vsi_stop_rings_no_wait(pf->vsi[vf->lan_vsi_idx]);
1695 }
1696
1697 /* Now that we've notified HW to disable all of the VF rings, wait
1698 * until they finish.
1699 */
1700 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1701 /* On initial reset, we don't have any queues to disable */
1702 if (vf->lan_vsi_idx == 0)
1703 continue;
1704
1705 /* If VF is reset in another thread just continue */
1706 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1707 continue;
1708
1709 i40e_vsi_wait_queues_disabled(pf->vsi[vf->lan_vsi_idx]);
1710 }
1711
1712 /* Hw may need up to 50ms to finish disabling the RX queues. We
1713 * minimize the wait by delaying only once for all VFs.
1714 */
1715 mdelay(50);
1716
1717 /* Finish the reset on each VF */
1718 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1719 /* If VF is reset in another thread just continue */
1720 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1721 continue;
1722
1723 i40e_cleanup_reset_vf(vf);
1724 }
1725
1726 i40e_flush(hw);
1727 usleep_range(20000, 40000);
1728 clear_bit(__I40E_VF_DISABLE, pf->state);
1729
1730 return true;
1731}
1732
1733/**
1734 * i40e_free_vfs
1735 * @pf: pointer to the PF structure
1736 *
1737 * free VF resources
1738 **/
1739void i40e_free_vfs(struct i40e_pf *pf)
1740{
1741 struct i40e_hw *hw = &pf->hw;
1742 u32 reg_idx, bit_idx;
1743 int i, tmp, vf_id;
1744
1745 if (!pf->vf)
1746 return;
1747
1748 set_bit(__I40E_VFS_RELEASING, pf->state);
1749 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1750 usleep_range(1000, 2000);
1751
1752 i40e_notify_client_of_vf_enable(pf, 0);
1753
1754 /* Disable IOV before freeing resources. This lets any VF drivers
1755 * running in the host get themselves cleaned up before we yank
1756 * the carpet out from underneath their feet.
1757 */
1758 if (!pci_vfs_assigned(pf->pdev))
1759 pci_disable_sriov(pf->pdev);
1760 else
1761 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1762
1763 /* Amortize wait time by stopping all VFs at the same time */
1764 for (i = 0; i < pf->num_alloc_vfs; i++) {
1765 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1766 continue;
1767
1768 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1769 }
1770
1771 for (i = 0; i < pf->num_alloc_vfs; i++) {
1772 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1773 continue;
1774
1775 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1776 }
1777
1778 /* free up VF resources */
1779 tmp = pf->num_alloc_vfs;
1780 pf->num_alloc_vfs = 0;
1781 for (i = 0; i < tmp; i++) {
1782 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1783 i40e_free_vf_res(&pf->vf[i]);
1784 /* disable qp mappings */
1785 i40e_disable_vf_mappings(&pf->vf[i]);
1786 }
1787
1788 kfree(pf->vf);
1789 pf->vf = NULL;
1790
1791 /* This check is for when the driver is unloaded while VFs are
1792 * assigned. Setting the number of VFs to 0 through sysfs is caught
1793 * before this function ever gets called.
1794 */
1795 if (!pci_vfs_assigned(pf->pdev)) {
1796 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1797 * work correctly when SR-IOV gets re-enabled.
1798 */
1799 for (vf_id = 0; vf_id < tmp; vf_id++) {
1800 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1801 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1802 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1803 }
1804 }
1805 clear_bit(__I40E_VF_DISABLE, pf->state);
1806 clear_bit(__I40E_VFS_RELEASING, pf->state);
1807}
1808
1809#ifdef CONFIG_PCI_IOV
1810/**
1811 * i40e_alloc_vfs
1812 * @pf: pointer to the PF structure
1813 * @num_alloc_vfs: number of VFs to allocate
1814 *
1815 * allocate VF resources
1816 **/
1817int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1818{
1819 struct i40e_vf *vfs;
1820 int i, ret = 0;
1821
1822 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1823 i40e_irq_dynamic_disable_icr0(pf);
1824
1825 /* Check to see if we're just allocating resources for extant VFs */
1826 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1827 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1828 if (ret) {
1829 clear_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1830 pf->num_alloc_vfs = 0;
1831 goto err_iov;
1832 }
1833 }
1834 /* allocate memory */
1835 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1836 if (!vfs) {
1837 ret = -ENOMEM;
1838 goto err_alloc;
1839 }
1840 pf->vf = vfs;
1841
1842 /* apply default profile */
1843 for (i = 0; i < num_alloc_vfs; i++) {
1844 vfs[i].pf = pf;
1845 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1846 vfs[i].vf_id = i;
1847
1848 /* assign default capabilities */
1849 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1850 vfs[i].spoofchk = true;
1851
1852 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1853
1854 }
1855 pf->num_alloc_vfs = num_alloc_vfs;
1856
1857 /* VF resources get allocated during reset */
1858 i40e_reset_all_vfs(pf, false);
1859
1860 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1861
1862err_alloc:
1863 if (ret)
1864 i40e_free_vfs(pf);
1865err_iov:
1866 /* Re-enable interrupt 0. */
1867 i40e_irq_dynamic_enable_icr0(pf);
1868 return ret;
1869}
1870
1871#endif
1872/**
1873 * i40e_pci_sriov_enable
1874 * @pdev: pointer to a pci_dev structure
1875 * @num_vfs: number of VFs to allocate
1876 *
1877 * Enable or change the number of VFs
1878 **/
1879static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1880{
1881#ifdef CONFIG_PCI_IOV
1882 struct i40e_pf *pf = pci_get_drvdata(pdev);
1883 int pre_existing_vfs = pci_num_vf(pdev);
1884 int err = 0;
1885
1886 if (test_bit(__I40E_TESTING, pf->state)) {
1887 dev_warn(&pdev->dev,
1888 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1889 err = -EPERM;
1890 goto err_out;
1891 }
1892
1893 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1894 i40e_free_vfs(pf);
1895 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1896 goto out;
1897
1898 if (num_vfs > pf->num_req_vfs) {
1899 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1900 num_vfs, pf->num_req_vfs);
1901 err = -EPERM;
1902 goto err_out;
1903 }
1904
1905 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1906 err = i40e_alloc_vfs(pf, num_vfs);
1907 if (err) {
1908 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1909 goto err_out;
1910 }
1911
1912out:
1913 return num_vfs;
1914
1915err_out:
1916 return err;
1917#endif
1918 return 0;
1919}
1920
1921/**
1922 * i40e_pci_sriov_configure
1923 * @pdev: pointer to a pci_dev structure
1924 * @num_vfs: number of VFs to allocate
1925 *
1926 * Enable or change the number of VFs. Called when the user updates the number
1927 * of VFs in sysfs.
1928 **/
1929int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1930{
1931 struct i40e_pf *pf = pci_get_drvdata(pdev);
1932 int ret = 0;
1933
1934 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1935 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1936 return -EAGAIN;
1937 }
1938
1939 if (num_vfs) {
1940 if (!test_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags)) {
1941 set_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1942 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1943 }
1944 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1945 goto sriov_configure_out;
1946 }
1947
1948 if (!pci_vfs_assigned(pf->pdev)) {
1949 i40e_free_vfs(pf);
1950 clear_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1951 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1952 } else {
1953 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1954 ret = -EINVAL;
1955 goto sriov_configure_out;
1956 }
1957sriov_configure_out:
1958 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1959 return ret;
1960}
1961
1962/***********************virtual channel routines******************/
1963
1964/**
1965 * i40e_vc_send_msg_to_vf
1966 * @vf: pointer to the VF info
1967 * @v_opcode: virtual channel opcode
1968 * @v_retval: virtual channel return value
1969 * @msg: pointer to the msg buffer
1970 * @msglen: msg length
1971 *
1972 * send msg to VF
1973 **/
1974static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1975 u32 v_retval, u8 *msg, u16 msglen)
1976{
1977 struct i40e_pf *pf;
1978 struct i40e_hw *hw;
1979 int abs_vf_id;
1980 int aq_ret;
1981
1982 /* validate the request */
1983 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1984 return -EINVAL;
1985
1986 pf = vf->pf;
1987 hw = &pf->hw;
1988 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1989
1990 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1991 msg, msglen, NULL);
1992 if (aq_ret) {
1993 dev_info(&pf->pdev->dev,
1994 "Unable to send the message to VF %d aq_err %d\n",
1995 vf->vf_id, pf->hw.aq.asq_last_status);
1996 return -EIO;
1997 }
1998
1999 return 0;
2000}
2001
2002/**
2003 * i40e_vc_send_resp_to_vf
2004 * @vf: pointer to the VF info
2005 * @opcode: operation code
2006 * @retval: return value
2007 *
2008 * send resp msg to VF
2009 **/
2010static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
2011 enum virtchnl_ops opcode,
2012 int retval)
2013{
2014 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
2015}
2016
2017/**
2018 * i40e_sync_vf_state
2019 * @vf: pointer to the VF info
2020 * @state: VF state
2021 *
2022 * Called from a VF message to synchronize the service with a potential
2023 * VF reset state
2024 **/
2025static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
2026{
2027 int i;
2028
2029 /* When handling some messages, it needs VF state to be set.
2030 * It is possible that this flag is cleared during VF reset,
2031 * so there is a need to wait until the end of the reset to
2032 * handle the request message correctly.
2033 */
2034 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
2035 if (test_bit(state, &vf->vf_states))
2036 return true;
2037 usleep_range(10000, 20000);
2038 }
2039
2040 return test_bit(state, &vf->vf_states);
2041}
2042
2043/**
2044 * i40e_vc_get_version_msg
2045 * @vf: pointer to the VF info
2046 * @msg: pointer to the msg buffer
2047 *
2048 * called from the VF to request the API version used by the PF
2049 **/
2050static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
2051{
2052 struct virtchnl_version_info info = {
2053 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
2054 };
2055
2056 vf->vf_ver = *(struct virtchnl_version_info *)msg;
2057 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
2058 if (VF_IS_V10(&vf->vf_ver))
2059 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
2060 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
2061 0, (u8 *)&info,
2062 sizeof(struct virtchnl_version_info));
2063}
2064
2065/**
2066 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
2067 * @vf: pointer to VF structure
2068 **/
2069static void i40e_del_qch(struct i40e_vf *vf)
2070{
2071 struct i40e_pf *pf = vf->pf;
2072 int i;
2073
2074 /* first element in the array belongs to primary VF VSI and we shouldn't
2075 * delete it. We should however delete the rest of the VSIs created
2076 */
2077 for (i = 1; i < vf->num_tc; i++) {
2078 if (vf->ch[i].vsi_idx) {
2079 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
2080 vf->ch[i].vsi_idx = 0;
2081 vf->ch[i].vsi_id = 0;
2082 }
2083 }
2084}
2085
2086/**
2087 * i40e_vc_get_max_frame_size
2088 * @vf: pointer to the VF
2089 *
2090 * Max frame size is determined based on the current port's max frame size and
2091 * whether a port VLAN is configured on this VF. The VF is not aware whether
2092 * it's in a port VLAN so the PF needs to account for this in max frame size
2093 * checks and sending the max frame size to the VF.
2094 **/
2095static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2096{
2097 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2098
2099 if (vf->port_vlan_id)
2100 max_frame_size -= VLAN_HLEN;
2101
2102 return max_frame_size;
2103}
2104
2105/**
2106 * i40e_vc_get_vf_resources_msg
2107 * @vf: pointer to the VF info
2108 * @msg: pointer to the msg buffer
2109 *
2110 * called from the VF to request its resources
2111 **/
2112static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2113{
2114 struct virtchnl_vf_resource *vfres = NULL;
2115 struct i40e_pf *pf = vf->pf;
2116 struct i40e_vsi *vsi;
2117 int num_vsis = 1;
2118 int aq_ret = 0;
2119 size_t len = 0;
2120 int ret;
2121
2122 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
2123 aq_ret = -EINVAL;
2124 goto err;
2125 }
2126
2127 len = virtchnl_struct_size(vfres, vsi_res, num_vsis);
2128 vfres = kzalloc(len, GFP_KERNEL);
2129 if (!vfres) {
2130 aq_ret = -ENOMEM;
2131 len = 0;
2132 goto err;
2133 }
2134 if (VF_IS_V11(&vf->vf_ver))
2135 vf->driver_caps = *(u32 *)msg;
2136 else
2137 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2138 VIRTCHNL_VF_OFFLOAD_RSS_REG |
2139 VIRTCHNL_VF_OFFLOAD_VLAN;
2140
2141 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2142 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
2143 vsi = pf->vsi[vf->lan_vsi_idx];
2144 if (!vsi->info.pvid)
2145 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2146
2147 if (i40e_vf_client_capable(pf, vf->vf_id) &&
2148 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RDMA)) {
2149 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RDMA;
2150 set_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states);
2151 } else {
2152 clear_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states);
2153 }
2154
2155 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2156 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2157 } else {
2158 if (test_bit(I40E_HW_CAP_RSS_AQ, pf->hw.caps) &&
2159 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2160 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2161 else
2162 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2163 }
2164
2165 if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE, pf->hw.caps)) {
2166 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2167 vfres->vf_cap_flags |=
2168 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2169 }
2170
2171 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2172 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2173
2174 if (test_bit(I40E_HW_CAP_OUTER_UDP_CSUM, pf->hw.caps) &&
2175 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2176 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2177
2178 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2179 if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
2180 dev_err(&pf->pdev->dev,
2181 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2182 vf->vf_id);
2183 aq_ret = -EINVAL;
2184 goto err;
2185 }
2186 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2187 }
2188
2189 if (test_bit(I40E_HW_CAP_WB_ON_ITR, pf->hw.caps)) {
2190 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2191 vfres->vf_cap_flags |=
2192 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2193 }
2194
2195 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2196 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2197
2198 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2199 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2200
2201 vfres->num_vsis = num_vsis;
2202 vfres->num_queue_pairs = vf->num_queue_pairs;
2203 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2204 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2205 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2206 vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2207
2208 if (vf->lan_vsi_idx) {
2209 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2210 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2211 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2212 /* VFs only use TC 0 */
2213 vfres->vsi_res[0].qset_handle
2214 = le16_to_cpu(vsi->info.qs_handle[0]);
2215 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) {
2216 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
2217 eth_zero_addr(vf->default_lan_addr.addr);
2218 }
2219 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2220 vf->default_lan_addr.addr);
2221 }
2222 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2223
2224err:
2225 /* send the response back to the VF */
2226 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2227 aq_ret, (u8 *)vfres, len);
2228
2229 kfree(vfres);
2230 return ret;
2231}
2232
2233/**
2234 * i40e_vc_config_promiscuous_mode_msg
2235 * @vf: pointer to the VF info
2236 * @msg: pointer to the msg buffer
2237 *
2238 * called from the VF to configure the promiscuous mode of
2239 * VF vsis
2240 **/
2241static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2242{
2243 struct virtchnl_promisc_info *info =
2244 (struct virtchnl_promisc_info *)msg;
2245 struct i40e_pf *pf = vf->pf;
2246 bool allmulti = false;
2247 bool alluni = false;
2248 int aq_ret = 0;
2249
2250 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2251 aq_ret = -EINVAL;
2252 goto err_out;
2253 }
2254 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2255 dev_err(&pf->pdev->dev,
2256 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2257 vf->vf_id);
2258
2259 /* Lie to the VF on purpose, because this is an error we can
2260 * ignore. Unprivileged VF is not a virtual channel error.
2261 */
2262 aq_ret = 0;
2263 goto err_out;
2264 }
2265
2266 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2267 aq_ret = -EINVAL;
2268 goto err_out;
2269 }
2270
2271 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2272 aq_ret = -EINVAL;
2273 goto err_out;
2274 }
2275
2276 /* Multicast promiscuous handling*/
2277 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2278 allmulti = true;
2279
2280 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2281 alluni = true;
2282 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2283 alluni);
2284 if (aq_ret)
2285 goto err_out;
2286
2287 if (allmulti) {
2288 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2289 &vf->vf_states))
2290 dev_info(&pf->pdev->dev,
2291 "VF %d successfully set multicast promiscuous mode\n",
2292 vf->vf_id);
2293 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2294 &vf->vf_states))
2295 dev_info(&pf->pdev->dev,
2296 "VF %d successfully unset multicast promiscuous mode\n",
2297 vf->vf_id);
2298
2299 if (alluni) {
2300 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2301 &vf->vf_states))
2302 dev_info(&pf->pdev->dev,
2303 "VF %d successfully set unicast promiscuous mode\n",
2304 vf->vf_id);
2305 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2306 &vf->vf_states))
2307 dev_info(&pf->pdev->dev,
2308 "VF %d successfully unset unicast promiscuous mode\n",
2309 vf->vf_id);
2310
2311err_out:
2312 /* send the response to the VF */
2313 return i40e_vc_send_resp_to_vf(vf,
2314 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2315 aq_ret);
2316}
2317
2318/**
2319 * i40e_vc_config_queues_msg
2320 * @vf: pointer to the VF info
2321 * @msg: pointer to the msg buffer
2322 *
2323 * called from the VF to configure the rx/tx
2324 * queues
2325 **/
2326static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2327{
2328 struct virtchnl_vsi_queue_config_info *qci =
2329 (struct virtchnl_vsi_queue_config_info *)msg;
2330 struct virtchnl_queue_pair_info *qpi;
2331 u16 vsi_id, vsi_queue_id = 0;
2332 struct i40e_pf *pf = vf->pf;
2333 int i, j = 0, idx = 0;
2334 struct i40e_vsi *vsi;
2335 u16 num_qps_all = 0;
2336 int aq_ret = 0;
2337
2338 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2339 aq_ret = -EINVAL;
2340 goto error_param;
2341 }
2342
2343 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2344 aq_ret = -EINVAL;
2345 goto error_param;
2346 }
2347
2348 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2349 aq_ret = -EINVAL;
2350 goto error_param;
2351 }
2352
2353 if (vf->adq_enabled) {
2354 for (i = 0; i < vf->num_tc; i++)
2355 num_qps_all += vf->ch[i].num_qps;
2356 if (num_qps_all != qci->num_queue_pairs) {
2357 aq_ret = -EINVAL;
2358 goto error_param;
2359 }
2360 }
2361
2362 vsi_id = qci->vsi_id;
2363
2364 for (i = 0; i < qci->num_queue_pairs; i++) {
2365 qpi = &qci->qpair[i];
2366
2367 if (!vf->adq_enabled) {
2368 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2369 qpi->txq.queue_id)) {
2370 aq_ret = -EINVAL;
2371 goto error_param;
2372 }
2373
2374 vsi_queue_id = qpi->txq.queue_id;
2375
2376 if (qpi->txq.vsi_id != qci->vsi_id ||
2377 qpi->rxq.vsi_id != qci->vsi_id ||
2378 qpi->rxq.queue_id != vsi_queue_id) {
2379 aq_ret = -EINVAL;
2380 goto error_param;
2381 }
2382 }
2383
2384 if (vf->adq_enabled) {
2385 if (idx >= ARRAY_SIZE(vf->ch)) {
2386 aq_ret = -ENODEV;
2387 goto error_param;
2388 }
2389 vsi_id = vf->ch[idx].vsi_id;
2390 }
2391
2392 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2393 &qpi->rxq) ||
2394 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2395 &qpi->txq)) {
2396 aq_ret = -EINVAL;
2397 goto error_param;
2398 }
2399
2400 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2401 * VF does not know about these additional VSIs and all
2402 * it cares is about its own queues. PF configures these queues
2403 * to its appropriate VSIs based on TC mapping
2404 */
2405 if (vf->adq_enabled) {
2406 if (idx >= ARRAY_SIZE(vf->ch)) {
2407 aq_ret = -ENODEV;
2408 goto error_param;
2409 }
2410 if (j == (vf->ch[idx].num_qps - 1)) {
2411 idx++;
2412 j = 0; /* resetting the queue count */
2413 vsi_queue_id = 0;
2414 } else {
2415 j++;
2416 vsi_queue_id++;
2417 }
2418 }
2419 }
2420 /* set vsi num_queue_pairs in use to num configured by VF */
2421 if (!vf->adq_enabled) {
2422 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2423 qci->num_queue_pairs;
2424 } else {
2425 for (i = 0; i < vf->num_tc; i++) {
2426 vsi = pf->vsi[vf->ch[i].vsi_idx];
2427 vsi->num_queue_pairs = vf->ch[i].num_qps;
2428
2429 if (i40e_update_adq_vsi_queues(vsi, i)) {
2430 aq_ret = -EIO;
2431 goto error_param;
2432 }
2433 }
2434 }
2435
2436error_param:
2437 /* send the response to the VF */
2438 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2439 aq_ret);
2440}
2441
2442/**
2443 * i40e_validate_queue_map - check queue map is valid
2444 * @vf: the VF structure pointer
2445 * @vsi_id: vsi id
2446 * @queuemap: Tx or Rx queue map
2447 *
2448 * check if Tx or Rx queue map is valid
2449 **/
2450static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2451 unsigned long queuemap)
2452{
2453 u16 vsi_queue_id, queue_id;
2454
2455 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2456 if (vf->adq_enabled) {
2457 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2458 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2459 } else {
2460 queue_id = vsi_queue_id;
2461 }
2462
2463 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2464 return -EINVAL;
2465 }
2466
2467 return 0;
2468}
2469
2470/**
2471 * i40e_vc_config_irq_map_msg
2472 * @vf: pointer to the VF info
2473 * @msg: pointer to the msg buffer
2474 *
2475 * called from the VF to configure the irq to
2476 * queue map
2477 **/
2478static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2479{
2480 struct virtchnl_irq_map_info *irqmap_info =
2481 (struct virtchnl_irq_map_info *)msg;
2482 struct virtchnl_vector_map *map;
2483 int aq_ret = 0;
2484 u16 vsi_id;
2485 int i;
2486
2487 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2488 aq_ret = -EINVAL;
2489 goto error_param;
2490 }
2491
2492 if (irqmap_info->num_vectors >
2493 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2494 aq_ret = -EINVAL;
2495 goto error_param;
2496 }
2497
2498 for (i = 0; i < irqmap_info->num_vectors; i++) {
2499 map = &irqmap_info->vecmap[i];
2500 /* validate msg params */
2501 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2502 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2503 aq_ret = -EINVAL;
2504 goto error_param;
2505 }
2506 vsi_id = map->vsi_id;
2507
2508 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2509 aq_ret = -EINVAL;
2510 goto error_param;
2511 }
2512
2513 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2514 aq_ret = -EINVAL;
2515 goto error_param;
2516 }
2517
2518 i40e_config_irq_link_list(vf, vsi_id, map);
2519 }
2520error_param:
2521 /* send the response to the VF */
2522 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2523 aq_ret);
2524}
2525
2526/**
2527 * i40e_ctrl_vf_tx_rings
2528 * @vsi: the SRIOV VSI being configured
2529 * @q_map: bit map of the queues to be enabled
2530 * @enable: start or stop the queue
2531 **/
2532static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2533 bool enable)
2534{
2535 struct i40e_pf *pf = vsi->back;
2536 int ret = 0;
2537 u16 q_id;
2538
2539 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2540 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2541 vsi->base_queue + q_id,
2542 false /*is xdp*/, enable);
2543 if (ret)
2544 break;
2545 }
2546 return ret;
2547}
2548
2549/**
2550 * i40e_ctrl_vf_rx_rings
2551 * @vsi: the SRIOV VSI being configured
2552 * @q_map: bit map of the queues to be enabled
2553 * @enable: start or stop the queue
2554 **/
2555static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2556 bool enable)
2557{
2558 struct i40e_pf *pf = vsi->back;
2559 int ret = 0;
2560 u16 q_id;
2561
2562 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2563 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2564 enable);
2565 if (ret)
2566 break;
2567 }
2568 return ret;
2569}
2570
2571/**
2572 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2573 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2574 *
2575 * Returns true if validation was successful, else false.
2576 */
2577static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2578{
2579 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2580 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2581 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2582 return false;
2583
2584 return true;
2585}
2586
2587/**
2588 * i40e_vc_enable_queues_msg
2589 * @vf: pointer to the VF info
2590 * @msg: pointer to the msg buffer
2591 *
2592 * called from the VF to enable all or specific queue(s)
2593 **/
2594static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2595{
2596 struct virtchnl_queue_select *vqs =
2597 (struct virtchnl_queue_select *)msg;
2598 struct i40e_pf *pf = vf->pf;
2599 int aq_ret = 0;
2600 int i;
2601
2602 if (vf->is_disabled_from_host) {
2603 aq_ret = -EPERM;
2604 dev_info(&pf->pdev->dev,
2605 "Admin has disabled VF %d, will not enable queues\n",
2606 vf->vf_id);
2607 goto error_param;
2608 }
2609
2610 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2611 aq_ret = -EINVAL;
2612 goto error_param;
2613 }
2614
2615 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2616 aq_ret = -EINVAL;
2617 goto error_param;
2618 }
2619
2620 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2621 aq_ret = -EINVAL;
2622 goto error_param;
2623 }
2624
2625 /* Use the queue bit map sent by the VF */
2626 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2627 true)) {
2628 aq_ret = -EIO;
2629 goto error_param;
2630 }
2631 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2632 true)) {
2633 aq_ret = -EIO;
2634 goto error_param;
2635 }
2636
2637 /* need to start the rings for additional ADq VSI's as well */
2638 if (vf->adq_enabled) {
2639 /* zero belongs to LAN VSI */
2640 for (i = 1; i < vf->num_tc; i++) {
2641 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2642 aq_ret = -EIO;
2643 }
2644 }
2645
2646error_param:
2647 /* send the response to the VF */
2648 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2649 aq_ret);
2650}
2651
2652/**
2653 * i40e_vc_disable_queues_msg
2654 * @vf: pointer to the VF info
2655 * @msg: pointer to the msg buffer
2656 *
2657 * called from the VF to disable all or specific
2658 * queue(s)
2659 **/
2660static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2661{
2662 struct virtchnl_queue_select *vqs =
2663 (struct virtchnl_queue_select *)msg;
2664 struct i40e_pf *pf = vf->pf;
2665 int aq_ret = 0;
2666
2667 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2668 aq_ret = -EINVAL;
2669 goto error_param;
2670 }
2671
2672 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2673 aq_ret = -EINVAL;
2674 goto error_param;
2675 }
2676
2677 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2678 aq_ret = -EINVAL;
2679 goto error_param;
2680 }
2681
2682 /* Use the queue bit map sent by the VF */
2683 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2684 false)) {
2685 aq_ret = -EIO;
2686 goto error_param;
2687 }
2688 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2689 false)) {
2690 aq_ret = -EIO;
2691 goto error_param;
2692 }
2693error_param:
2694 /* send the response to the VF */
2695 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2696 aq_ret);
2697}
2698
2699/**
2700 * i40e_check_enough_queue - find big enough queue number
2701 * @vf: pointer to the VF info
2702 * @needed: the number of items needed
2703 *
2704 * Returns the base item index of the queue, or negative for error
2705 **/
2706static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2707{
2708 unsigned int i, cur_queues, more, pool_size;
2709 struct i40e_lump_tracking *pile;
2710 struct i40e_pf *pf = vf->pf;
2711 struct i40e_vsi *vsi;
2712
2713 vsi = pf->vsi[vf->lan_vsi_idx];
2714 cur_queues = vsi->alloc_queue_pairs;
2715
2716 /* if current allocated queues are enough for need */
2717 if (cur_queues >= needed)
2718 return vsi->base_queue;
2719
2720 pile = pf->qp_pile;
2721 if (cur_queues > 0) {
2722 /* if the allocated queues are not zero
2723 * just check if there are enough queues for more
2724 * behind the allocated queues.
2725 */
2726 more = needed - cur_queues;
2727 for (i = vsi->base_queue + cur_queues;
2728 i < pile->num_entries; i++) {
2729 if (pile->list[i] & I40E_PILE_VALID_BIT)
2730 break;
2731
2732 if (more-- == 1)
2733 /* there is enough */
2734 return vsi->base_queue;
2735 }
2736 }
2737
2738 pool_size = 0;
2739 for (i = 0; i < pile->num_entries; i++) {
2740 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2741 pool_size = 0;
2742 continue;
2743 }
2744 if (needed <= ++pool_size)
2745 /* there is enough */
2746 return i;
2747 }
2748
2749 return -ENOMEM;
2750}
2751
2752/**
2753 * i40e_vc_request_queues_msg
2754 * @vf: pointer to the VF info
2755 * @msg: pointer to the msg buffer
2756 *
2757 * VFs get a default number of queues but can use this message to request a
2758 * different number. If the request is successful, PF will reset the VF and
2759 * return 0. If unsuccessful, PF will send message informing VF of number of
2760 * available queues and return result of sending VF a message.
2761 **/
2762static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2763{
2764 struct virtchnl_vf_res_request *vfres =
2765 (struct virtchnl_vf_res_request *)msg;
2766 u16 req_pairs = vfres->num_queue_pairs;
2767 u8 cur_pairs = vf->num_queue_pairs;
2768 struct i40e_pf *pf = vf->pf;
2769
2770 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2771 return -EINVAL;
2772
2773 if (req_pairs > I40E_MAX_VF_QUEUES) {
2774 dev_err(&pf->pdev->dev,
2775 "VF %d tried to request more than %d queues.\n",
2776 vf->vf_id,
2777 I40E_MAX_VF_QUEUES);
2778 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2779 } else if (req_pairs - cur_pairs > pf->queues_left) {
2780 dev_warn(&pf->pdev->dev,
2781 "VF %d requested %d more queues, but only %d left.\n",
2782 vf->vf_id,
2783 req_pairs - cur_pairs,
2784 pf->queues_left);
2785 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2786 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2787 dev_warn(&pf->pdev->dev,
2788 "VF %d requested %d more queues, but there is not enough for it.\n",
2789 vf->vf_id,
2790 req_pairs - cur_pairs);
2791 vfres->num_queue_pairs = cur_pairs;
2792 } else {
2793 /* successful request */
2794 vf->num_req_queues = req_pairs;
2795 i40e_vc_reset_vf(vf, true);
2796 return 0;
2797 }
2798
2799 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2800 (u8 *)vfres, sizeof(*vfres));
2801}
2802
2803/**
2804 * i40e_vc_get_stats_msg
2805 * @vf: pointer to the VF info
2806 * @msg: pointer to the msg buffer
2807 *
2808 * called from the VF to get vsi stats
2809 **/
2810static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2811{
2812 struct virtchnl_queue_select *vqs =
2813 (struct virtchnl_queue_select *)msg;
2814 struct i40e_pf *pf = vf->pf;
2815 struct i40e_eth_stats stats;
2816 int aq_ret = 0;
2817 struct i40e_vsi *vsi;
2818
2819 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2820
2821 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2822 aq_ret = -EINVAL;
2823 goto error_param;
2824 }
2825
2826 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2827 aq_ret = -EINVAL;
2828 goto error_param;
2829 }
2830
2831 vsi = pf->vsi[vf->lan_vsi_idx];
2832 if (!vsi) {
2833 aq_ret = -EINVAL;
2834 goto error_param;
2835 }
2836 i40e_update_eth_stats(vsi);
2837 stats = vsi->eth_stats;
2838
2839error_param:
2840 /* send the response back to the VF */
2841 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2842 (u8 *)&stats, sizeof(stats));
2843}
2844
2845/**
2846 * i40e_can_vf_change_mac
2847 * @vf: pointer to the VF info
2848 *
2849 * Return true if the VF is allowed to change its MAC filters, false otherwise
2850 */
2851static bool i40e_can_vf_change_mac(struct i40e_vf *vf)
2852{
2853 /* If the VF MAC address has been set administratively (via the
2854 * ndo_set_vf_mac command), then deny permission to the VF to
2855 * add/delete unicast MAC addresses, unless the VF is trusted
2856 */
2857 if (vf->pf_set_mac && !vf->trusted)
2858 return false;
2859
2860 return true;
2861}
2862
2863#define I40E_MAX_MACVLAN_PER_HW 3072
2864#define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \
2865 (num_ports))
2866/* If the VF is not trusted restrict the number of MAC/VLAN it can program
2867 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2868 */
2869#define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2870#define I40E_VC_MAX_VLAN_PER_VF 16
2871
2872#define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \
2873({ typeof(vf_num) vf_num_ = (vf_num); \
2874 typeof(num_ports) num_ports_ = (num_ports); \
2875 ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \
2876 I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \
2877 I40E_VC_MAX_MAC_ADDR_PER_VF; })
2878/**
2879 * i40e_check_vf_permission
2880 * @vf: pointer to the VF info
2881 * @al: MAC address list from virtchnl
2882 *
2883 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2884 * if any address in the list is not valid. Checks the following conditions:
2885 *
2886 * 1) broadcast and zero addresses are never valid
2887 * 2) unicast addresses are not allowed if the VMM has administratively set
2888 * the VF MAC address, unless the VF is marked as privileged.
2889 * 3) There is enough space to add all the addresses.
2890 *
2891 * Note that to guarantee consistency, it is expected this function be called
2892 * while holding the mac_filter_hash_lock, as otherwise the current number of
2893 * addresses might not be accurate.
2894 **/
2895static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2896 struct virtchnl_ether_addr_list *al)
2897{
2898 struct i40e_pf *pf = vf->pf;
2899 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2900 struct i40e_hw *hw = &pf->hw;
2901 int mac2add_cnt = 0;
2902 int i;
2903
2904 for (i = 0; i < al->num_elements; i++) {
2905 struct i40e_mac_filter *f;
2906 u8 *addr = al->list[i].addr;
2907
2908 if (is_broadcast_ether_addr(addr) ||
2909 is_zero_ether_addr(addr)) {
2910 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2911 addr);
2912 return -EINVAL;
2913 }
2914
2915 /* If the host VMM administrator has set the VF MAC address
2916 * administratively via the ndo_set_vf_mac command then deny
2917 * permission to the VF to add or delete unicast MAC addresses.
2918 * Unless the VF is privileged and then it can do whatever.
2919 * The VF may request to set the MAC address filter already
2920 * assigned to it so do not return an error in that case.
2921 */
2922 if (!i40e_can_vf_change_mac(vf) &&
2923 !is_multicast_ether_addr(addr) &&
2924 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2925 dev_err(&pf->pdev->dev,
2926 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2927 return -EPERM;
2928 }
2929
2930 /*count filters that really will be added*/
2931 f = i40e_find_mac(vsi, addr);
2932 if (!f)
2933 ++mac2add_cnt;
2934 }
2935
2936 /* If this VF is not privileged, then we can't add more than a limited
2937 * number of addresses. Check to make sure that the additions do not
2938 * push us over the limit.
2939 */
2940 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2941 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2942 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2943 dev_err(&pf->pdev->dev,
2944 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2945 return -EPERM;
2946 }
2947 /* If this VF is trusted, it can use more resources than untrusted.
2948 * However to ensure that every trusted VF has appropriate number of
2949 * resources, divide whole pool of resources per port and then across
2950 * all VFs.
2951 */
2952 } else {
2953 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2954 I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
2955 hw->num_ports)) {
2956 dev_err(&pf->pdev->dev,
2957 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
2958 return -EPERM;
2959 }
2960 }
2961 return 0;
2962}
2963
2964/**
2965 * i40e_vc_ether_addr_type - get type of virtchnl_ether_addr
2966 * @vc_ether_addr: used to extract the type
2967 **/
2968static u8
2969i40e_vc_ether_addr_type(struct virtchnl_ether_addr *vc_ether_addr)
2970{
2971 return vc_ether_addr->type & VIRTCHNL_ETHER_ADDR_TYPE_MASK;
2972}
2973
2974/**
2975 * i40e_is_vc_addr_legacy
2976 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2977 *
2978 * check if the MAC address is from an older VF
2979 **/
2980static bool
2981i40e_is_vc_addr_legacy(struct virtchnl_ether_addr *vc_ether_addr)
2982{
2983 return i40e_vc_ether_addr_type(vc_ether_addr) ==
2984 VIRTCHNL_ETHER_ADDR_LEGACY;
2985}
2986
2987/**
2988 * i40e_is_vc_addr_primary
2989 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2990 *
2991 * check if the MAC address is the VF's primary MAC
2992 * This function should only be called when the MAC address in
2993 * virtchnl_ether_addr is a valid unicast MAC
2994 **/
2995static bool
2996i40e_is_vc_addr_primary(struct virtchnl_ether_addr *vc_ether_addr)
2997{
2998 return i40e_vc_ether_addr_type(vc_ether_addr) ==
2999 VIRTCHNL_ETHER_ADDR_PRIMARY;
3000}
3001
3002/**
3003 * i40e_update_vf_mac_addr
3004 * @vf: VF to update
3005 * @vc_ether_addr: structure from VIRTCHNL with MAC to add
3006 *
3007 * update the VF's cached hardware MAC if allowed
3008 **/
3009static void
3010i40e_update_vf_mac_addr(struct i40e_vf *vf,
3011 struct virtchnl_ether_addr *vc_ether_addr)
3012{
3013 u8 *mac_addr = vc_ether_addr->addr;
3014
3015 if (!is_valid_ether_addr(mac_addr))
3016 return;
3017
3018 /* If request to add MAC filter is a primary request update its default
3019 * MAC address with the requested one. If it is a legacy request then
3020 * check if current default is empty if so update the default MAC
3021 */
3022 if (i40e_is_vc_addr_primary(vc_ether_addr)) {
3023 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3024 } else if (i40e_is_vc_addr_legacy(vc_ether_addr)) {
3025 if (is_zero_ether_addr(vf->default_lan_addr.addr))
3026 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3027 }
3028}
3029
3030/**
3031 * i40e_vc_add_mac_addr_msg
3032 * @vf: pointer to the VF info
3033 * @msg: pointer to the msg buffer
3034 *
3035 * add guest mac address filter
3036 **/
3037static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3038{
3039 struct virtchnl_ether_addr_list *al =
3040 (struct virtchnl_ether_addr_list *)msg;
3041 struct i40e_pf *pf = vf->pf;
3042 struct i40e_vsi *vsi = NULL;
3043 int ret = 0;
3044 int i;
3045
3046 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3047 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3048 ret = -EINVAL;
3049 goto error_param;
3050 }
3051
3052 vsi = pf->vsi[vf->lan_vsi_idx];
3053
3054 /* Lock once, because all function inside for loop accesses VSI's
3055 * MAC filter list which needs to be protected using same lock.
3056 */
3057 spin_lock_bh(&vsi->mac_filter_hash_lock);
3058
3059 ret = i40e_check_vf_permission(vf, al);
3060 if (ret) {
3061 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3062 goto error_param;
3063 }
3064
3065 /* add new addresses to the list */
3066 for (i = 0; i < al->num_elements; i++) {
3067 struct i40e_mac_filter *f;
3068
3069 f = i40e_find_mac(vsi, al->list[i].addr);
3070 if (!f) {
3071 f = i40e_add_mac_filter(vsi, al->list[i].addr);
3072
3073 if (!f) {
3074 dev_err(&pf->pdev->dev,
3075 "Unable to add MAC filter %pM for VF %d\n",
3076 al->list[i].addr, vf->vf_id);
3077 ret = -EINVAL;
3078 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3079 goto error_param;
3080 }
3081 }
3082 i40e_update_vf_mac_addr(vf, &al->list[i]);
3083 }
3084 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3085
3086 /* program the updated filter list */
3087 ret = i40e_sync_vsi_filters(vsi);
3088 if (ret)
3089 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3090 vf->vf_id, ret);
3091
3092error_param:
3093 /* send the response to the VF */
3094 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
3095 ret, NULL, 0);
3096}
3097
3098/**
3099 * i40e_vc_del_mac_addr_msg
3100 * @vf: pointer to the VF info
3101 * @msg: pointer to the msg buffer
3102 *
3103 * remove guest mac address filter
3104 **/
3105static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3106{
3107 struct virtchnl_ether_addr_list *al =
3108 (struct virtchnl_ether_addr_list *)msg;
3109 bool was_unimac_deleted = false;
3110 struct i40e_pf *pf = vf->pf;
3111 struct i40e_vsi *vsi = NULL;
3112 int ret = 0;
3113 int i;
3114
3115 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3116 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3117 ret = -EINVAL;
3118 goto error_param;
3119 }
3120
3121 for (i = 0; i < al->num_elements; i++) {
3122 if (is_broadcast_ether_addr(al->list[i].addr) ||
3123 is_zero_ether_addr(al->list[i].addr)) {
3124 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
3125 al->list[i].addr, vf->vf_id);
3126 ret = -EINVAL;
3127 goto error_param;
3128 }
3129 }
3130 vsi = pf->vsi[vf->lan_vsi_idx];
3131
3132 spin_lock_bh(&vsi->mac_filter_hash_lock);
3133 /* delete addresses from the list */
3134 for (i = 0; i < al->num_elements; i++) {
3135 const u8 *addr = al->list[i].addr;
3136
3137 /* Allow to delete VF primary MAC only if it was not set
3138 * administratively by PF or if VF is trusted.
3139 */
3140 if (ether_addr_equal(addr, vf->default_lan_addr.addr)) {
3141 if (i40e_can_vf_change_mac(vf))
3142 was_unimac_deleted = true;
3143 else
3144 continue;
3145 }
3146
3147 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
3148 ret = -EINVAL;
3149 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3150 goto error_param;
3151 }
3152 }
3153
3154 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3155
3156 if (was_unimac_deleted)
3157 eth_zero_addr(vf->default_lan_addr.addr);
3158
3159 /* program the updated filter list */
3160 ret = i40e_sync_vsi_filters(vsi);
3161 if (ret)
3162 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3163 vf->vf_id, ret);
3164
3165 if (vf->trusted && was_unimac_deleted) {
3166 struct i40e_mac_filter *f;
3167 struct hlist_node *h;
3168 u8 *macaddr = NULL;
3169 int bkt;
3170
3171 /* set last unicast mac address as default */
3172 spin_lock_bh(&vsi->mac_filter_hash_lock);
3173 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3174 if (is_valid_ether_addr(f->macaddr))
3175 macaddr = f->macaddr;
3176 }
3177 if (macaddr)
3178 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
3179 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3180 }
3181error_param:
3182 /* send the response to the VF */
3183 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3184}
3185
3186/**
3187 * i40e_vc_add_vlan_msg
3188 * @vf: pointer to the VF info
3189 * @msg: pointer to the msg buffer
3190 *
3191 * program guest vlan id
3192 **/
3193static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3194{
3195 struct virtchnl_vlan_filter_list *vfl =
3196 (struct virtchnl_vlan_filter_list *)msg;
3197 struct i40e_pf *pf = vf->pf;
3198 struct i40e_vsi *vsi = NULL;
3199 int aq_ret = 0;
3200 int i;
3201
3202 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3203 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3204 dev_err(&pf->pdev->dev,
3205 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3206 goto error_param;
3207 }
3208 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3209 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3210 aq_ret = -EINVAL;
3211 goto error_param;
3212 }
3213
3214 for (i = 0; i < vfl->num_elements; i++) {
3215 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3216 aq_ret = -EINVAL;
3217 dev_err(&pf->pdev->dev,
3218 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3219 goto error_param;
3220 }
3221 }
3222 vsi = pf->vsi[vf->lan_vsi_idx];
3223 if (vsi->info.pvid) {
3224 aq_ret = -EINVAL;
3225 goto error_param;
3226 }
3227
3228 i40e_vlan_stripping_enable(vsi);
3229 for (i = 0; i < vfl->num_elements; i++) {
3230 /* add new VLAN filter */
3231 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3232 if (!ret)
3233 vf->num_vlan++;
3234
3235 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3236 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3237 true,
3238 vfl->vlan_id[i],
3239 NULL);
3240 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3241 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3242 true,
3243 vfl->vlan_id[i],
3244 NULL);
3245
3246 if (ret)
3247 dev_err(&pf->pdev->dev,
3248 "Unable to add VLAN filter %d for VF %d, error %d\n",
3249 vfl->vlan_id[i], vf->vf_id, ret);
3250 }
3251
3252error_param:
3253 /* send the response to the VF */
3254 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3255}
3256
3257/**
3258 * i40e_vc_remove_vlan_msg
3259 * @vf: pointer to the VF info
3260 * @msg: pointer to the msg buffer
3261 *
3262 * remove programmed guest vlan id
3263 **/
3264static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3265{
3266 struct virtchnl_vlan_filter_list *vfl =
3267 (struct virtchnl_vlan_filter_list *)msg;
3268 struct i40e_pf *pf = vf->pf;
3269 struct i40e_vsi *vsi = NULL;
3270 int aq_ret = 0;
3271 int i;
3272
3273 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3274 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3275 aq_ret = -EINVAL;
3276 goto error_param;
3277 }
3278
3279 for (i = 0; i < vfl->num_elements; i++) {
3280 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3281 aq_ret = -EINVAL;
3282 goto error_param;
3283 }
3284 }
3285
3286 vsi = pf->vsi[vf->lan_vsi_idx];
3287 if (vsi->info.pvid) {
3288 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3289 aq_ret = -EINVAL;
3290 goto error_param;
3291 }
3292
3293 for (i = 0; i < vfl->num_elements; i++) {
3294 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3295 vf->num_vlan--;
3296
3297 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3298 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3299 false,
3300 vfl->vlan_id[i],
3301 NULL);
3302 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3303 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3304 false,
3305 vfl->vlan_id[i],
3306 NULL);
3307 }
3308
3309error_param:
3310 /* send the response to the VF */
3311 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3312}
3313
3314/**
3315 * i40e_vc_rdma_msg
3316 * @vf: pointer to the VF info
3317 * @msg: pointer to the msg buffer
3318 * @msglen: msg length
3319 *
3320 * called from the VF for the iwarp msgs
3321 **/
3322static int i40e_vc_rdma_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3323{
3324 struct i40e_pf *pf = vf->pf;
3325 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3326 int aq_ret = 0;
3327
3328 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3329 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3330 aq_ret = -EINVAL;
3331 goto error_param;
3332 }
3333
3334 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
3335 msg, msglen);
3336
3337error_param:
3338 /* send the response to the VF */
3339 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_RDMA,
3340 aq_ret);
3341}
3342
3343/**
3344 * i40e_vc_rdma_qvmap_msg
3345 * @vf: pointer to the VF info
3346 * @msg: pointer to the msg buffer
3347 * @config: config qvmap or release it
3348 *
3349 * called from the VF for the iwarp msgs
3350 **/
3351static int i40e_vc_rdma_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3352{
3353 struct virtchnl_rdma_qvlist_info *qvlist_info =
3354 (struct virtchnl_rdma_qvlist_info *)msg;
3355 int aq_ret = 0;
3356
3357 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3358 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3359 aq_ret = -EINVAL;
3360 goto error_param;
3361 }
3362
3363 if (config) {
3364 if (i40e_config_rdma_qvlist(vf, qvlist_info))
3365 aq_ret = -EINVAL;
3366 } else {
3367 i40e_release_rdma_qvlist(vf);
3368 }
3369
3370error_param:
3371 /* send the response to the VF */
3372 return i40e_vc_send_resp_to_vf(vf,
3373 config ? VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP :
3374 VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP,
3375 aq_ret);
3376}
3377
3378/**
3379 * i40e_vc_config_rss_key
3380 * @vf: pointer to the VF info
3381 * @msg: pointer to the msg buffer
3382 *
3383 * Configure the VF's RSS key
3384 **/
3385static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3386{
3387 struct virtchnl_rss_key *vrk =
3388 (struct virtchnl_rss_key *)msg;
3389 struct i40e_pf *pf = vf->pf;
3390 struct i40e_vsi *vsi = NULL;
3391 int aq_ret = 0;
3392
3393 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3394 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3395 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3396 aq_ret = -EINVAL;
3397 goto err;
3398 }
3399
3400 vsi = pf->vsi[vf->lan_vsi_idx];
3401 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3402err:
3403 /* send the response to the VF */
3404 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3405 aq_ret);
3406}
3407
3408/**
3409 * i40e_vc_config_rss_lut
3410 * @vf: pointer to the VF info
3411 * @msg: pointer to the msg buffer
3412 *
3413 * Configure the VF's RSS LUT
3414 **/
3415static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3416{
3417 struct virtchnl_rss_lut *vrl =
3418 (struct virtchnl_rss_lut *)msg;
3419 struct i40e_pf *pf = vf->pf;
3420 struct i40e_vsi *vsi = NULL;
3421 int aq_ret = 0;
3422 u16 i;
3423
3424 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3425 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3426 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3427 aq_ret = -EINVAL;
3428 goto err;
3429 }
3430
3431 for (i = 0; i < vrl->lut_entries; i++)
3432 if (vrl->lut[i] >= vf->num_queue_pairs) {
3433 aq_ret = -EINVAL;
3434 goto err;
3435 }
3436
3437 vsi = pf->vsi[vf->lan_vsi_idx];
3438 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3439 /* send the response to the VF */
3440err:
3441 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3442 aq_ret);
3443}
3444
3445/**
3446 * i40e_vc_get_rss_hena
3447 * @vf: pointer to the VF info
3448 * @msg: pointer to the msg buffer
3449 *
3450 * Return the RSS HENA bits allowed by the hardware
3451 **/
3452static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3453{
3454 struct virtchnl_rss_hena *vrh = NULL;
3455 struct i40e_pf *pf = vf->pf;
3456 int aq_ret = 0;
3457 int len = 0;
3458
3459 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3460 aq_ret = -EINVAL;
3461 goto err;
3462 }
3463 len = sizeof(struct virtchnl_rss_hena);
3464
3465 vrh = kzalloc(len, GFP_KERNEL);
3466 if (!vrh) {
3467 aq_ret = -ENOMEM;
3468 len = 0;
3469 goto err;
3470 }
3471 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3472err:
3473 /* send the response back to the VF */
3474 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3475 aq_ret, (u8 *)vrh, len);
3476 kfree(vrh);
3477 return aq_ret;
3478}
3479
3480/**
3481 * i40e_vc_set_rss_hena
3482 * @vf: pointer to the VF info
3483 * @msg: pointer to the msg buffer
3484 *
3485 * Set the RSS HENA bits for the VF
3486 **/
3487static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3488{
3489 struct virtchnl_rss_hena *vrh =
3490 (struct virtchnl_rss_hena *)msg;
3491 struct i40e_pf *pf = vf->pf;
3492 struct i40e_hw *hw = &pf->hw;
3493 int aq_ret = 0;
3494
3495 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3496 aq_ret = -EINVAL;
3497 goto err;
3498 }
3499 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3500 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3501 (u32)(vrh->hena >> 32));
3502
3503 /* send the response to the VF */
3504err:
3505 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3506}
3507
3508/**
3509 * i40e_vc_enable_vlan_stripping
3510 * @vf: pointer to the VF info
3511 * @msg: pointer to the msg buffer
3512 *
3513 * Enable vlan header stripping for the VF
3514 **/
3515static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3516{
3517 struct i40e_vsi *vsi;
3518 int aq_ret = 0;
3519
3520 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3521 aq_ret = -EINVAL;
3522 goto err;
3523 }
3524
3525 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3526 i40e_vlan_stripping_enable(vsi);
3527
3528 /* send the response to the VF */
3529err:
3530 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3531 aq_ret);
3532}
3533
3534/**
3535 * i40e_vc_disable_vlan_stripping
3536 * @vf: pointer to the VF info
3537 * @msg: pointer to the msg buffer
3538 *
3539 * Disable vlan header stripping for the VF
3540 **/
3541static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3542{
3543 struct i40e_vsi *vsi;
3544 int aq_ret = 0;
3545
3546 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3547 aq_ret = -EINVAL;
3548 goto err;
3549 }
3550
3551 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3552 i40e_vlan_stripping_disable(vsi);
3553
3554 /* send the response to the VF */
3555err:
3556 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3557 aq_ret);
3558}
3559
3560/**
3561 * i40e_validate_cloud_filter
3562 * @vf: pointer to VF structure
3563 * @tc_filter: pointer to filter requested
3564 *
3565 * This function validates cloud filter programmed as TC filter for ADq
3566 **/
3567static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3568 struct virtchnl_filter *tc_filter)
3569{
3570 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3571 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3572 struct i40e_pf *pf = vf->pf;
3573 struct i40e_vsi *vsi = NULL;
3574 struct i40e_mac_filter *f;
3575 struct hlist_node *h;
3576 bool found = false;
3577 int bkt;
3578
3579 if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) {
3580 dev_info(&pf->pdev->dev,
3581 "VF %d: ADQ doesn't support this action (%d)\n",
3582 vf->vf_id, tc_filter->action);
3583 goto err;
3584 }
3585
3586 /* action_meta is TC number here to which the filter is applied */
3587 if (!tc_filter->action_meta ||
3588 tc_filter->action_meta > vf->num_tc) {
3589 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3590 vf->vf_id, tc_filter->action_meta);
3591 goto err;
3592 }
3593
3594 /* Check filter if it's programmed for advanced mode or basic mode.
3595 * There are two ADq modes (for VF only),
3596 * 1. Basic mode: intended to allow as many filter options as possible
3597 * to be added to a VF in Non-trusted mode. Main goal is
3598 * to add filters to its own MAC and VLAN id.
3599 * 2. Advanced mode: is for allowing filters to be applied other than
3600 * its own MAC or VLAN. This mode requires the VF to be
3601 * Trusted.
3602 */
3603 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3604 vsi = pf->vsi[vf->lan_vsi_idx];
3605 f = i40e_find_mac(vsi, data.dst_mac);
3606
3607 if (!f) {
3608 dev_info(&pf->pdev->dev,
3609 "Destination MAC %pM doesn't belong to VF %d\n",
3610 data.dst_mac, vf->vf_id);
3611 goto err;
3612 }
3613
3614 if (mask.vlan_id) {
3615 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3616 hlist) {
3617 if (f->vlan == ntohs(data.vlan_id)) {
3618 found = true;
3619 break;
3620 }
3621 }
3622 if (!found) {
3623 dev_info(&pf->pdev->dev,
3624 "VF %d doesn't have any VLAN id %u\n",
3625 vf->vf_id, ntohs(data.vlan_id));
3626 goto err;
3627 }
3628 }
3629 } else {
3630 /* Check if VF is trusted */
3631 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3632 dev_err(&pf->pdev->dev,
3633 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3634 vf->vf_id);
3635 return -EIO;
3636 }
3637 }
3638
3639 if (mask.dst_mac[0] & data.dst_mac[0]) {
3640 if (is_broadcast_ether_addr(data.dst_mac) ||
3641 is_zero_ether_addr(data.dst_mac)) {
3642 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3643 vf->vf_id, data.dst_mac);
3644 goto err;
3645 }
3646 }
3647
3648 if (mask.src_mac[0] & data.src_mac[0]) {
3649 if (is_broadcast_ether_addr(data.src_mac) ||
3650 is_zero_ether_addr(data.src_mac)) {
3651 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3652 vf->vf_id, data.src_mac);
3653 goto err;
3654 }
3655 }
3656
3657 if (mask.dst_port & data.dst_port) {
3658 if (!data.dst_port) {
3659 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3660 vf->vf_id);
3661 goto err;
3662 }
3663 }
3664
3665 if (mask.src_port & data.src_port) {
3666 if (!data.src_port) {
3667 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3668 vf->vf_id);
3669 goto err;
3670 }
3671 }
3672
3673 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3674 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3675 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3676 vf->vf_id);
3677 goto err;
3678 }
3679
3680 if (mask.vlan_id & data.vlan_id) {
3681 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3682 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3683 vf->vf_id);
3684 goto err;
3685 }
3686 }
3687
3688 return 0;
3689err:
3690 return -EIO;
3691}
3692
3693/**
3694 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3695 * @vf: pointer to the VF info
3696 * @seid: seid of the vsi it is searching for
3697 **/
3698static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3699{
3700 struct i40e_pf *pf = vf->pf;
3701 struct i40e_vsi *vsi = NULL;
3702 int i;
3703
3704 for (i = 0; i < vf->num_tc ; i++) {
3705 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3706 if (vsi && vsi->seid == seid)
3707 return vsi;
3708 }
3709 return NULL;
3710}
3711
3712/**
3713 * i40e_del_all_cloud_filters
3714 * @vf: pointer to the VF info
3715 *
3716 * This function deletes all cloud filters
3717 **/
3718static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3719{
3720 struct i40e_cloud_filter *cfilter = NULL;
3721 struct i40e_pf *pf = vf->pf;
3722 struct i40e_vsi *vsi = NULL;
3723 struct hlist_node *node;
3724 int ret;
3725
3726 hlist_for_each_entry_safe(cfilter, node,
3727 &vf->cloud_filter_list, cloud_node) {
3728 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3729
3730 if (!vsi) {
3731 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3732 vf->vf_id, cfilter->seid);
3733 continue;
3734 }
3735
3736 if (cfilter->dst_port)
3737 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3738 false);
3739 else
3740 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3741 if (ret)
3742 dev_err(&pf->pdev->dev,
3743 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3744 vf->vf_id, ERR_PTR(ret),
3745 i40e_aq_str(&pf->hw,
3746 pf->hw.aq.asq_last_status));
3747
3748 hlist_del(&cfilter->cloud_node);
3749 kfree(cfilter);
3750 vf->num_cloud_filters--;
3751 }
3752}
3753
3754/**
3755 * i40e_vc_del_cloud_filter
3756 * @vf: pointer to the VF info
3757 * @msg: pointer to the msg buffer
3758 *
3759 * This function deletes a cloud filter programmed as TC filter for ADq
3760 **/
3761static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3762{
3763 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3764 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3765 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3766 struct i40e_cloud_filter cfilter, *cf = NULL;
3767 struct i40e_pf *pf = vf->pf;
3768 struct i40e_vsi *vsi = NULL;
3769 struct hlist_node *node;
3770 int aq_ret = 0;
3771 int i, ret;
3772
3773 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3774 aq_ret = -EINVAL;
3775 goto err;
3776 }
3777
3778 if (!vf->adq_enabled) {
3779 dev_info(&pf->pdev->dev,
3780 "VF %d: ADq not enabled, can't apply cloud filter\n",
3781 vf->vf_id);
3782 aq_ret = -EINVAL;
3783 goto err;
3784 }
3785
3786 if (i40e_validate_cloud_filter(vf, vcf)) {
3787 dev_info(&pf->pdev->dev,
3788 "VF %d: Invalid input, can't apply cloud filter\n",
3789 vf->vf_id);
3790 aq_ret = -EINVAL;
3791 goto err;
3792 }
3793
3794 memset(&cfilter, 0, sizeof(cfilter));
3795 /* parse destination mac address */
3796 for (i = 0; i < ETH_ALEN; i++)
3797 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3798
3799 /* parse source mac address */
3800 for (i = 0; i < ETH_ALEN; i++)
3801 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3802
3803 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3804 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3805 cfilter.src_port = mask.src_port & tcf.src_port;
3806
3807 switch (vcf->flow_type) {
3808 case VIRTCHNL_TCP_V4_FLOW:
3809 cfilter.n_proto = ETH_P_IP;
3810 if (mask.dst_ip[0] & tcf.dst_ip[0])
3811 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3812 ARRAY_SIZE(tcf.dst_ip));
3813 else if (mask.src_ip[0] & tcf.dst_ip[0])
3814 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3815 ARRAY_SIZE(tcf.dst_ip));
3816 break;
3817 case VIRTCHNL_TCP_V6_FLOW:
3818 cfilter.n_proto = ETH_P_IPV6;
3819 if (mask.dst_ip[3] & tcf.dst_ip[3])
3820 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3821 sizeof(cfilter.ip.v6.dst_ip6));
3822 if (mask.src_ip[3] & tcf.src_ip[3])
3823 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3824 sizeof(cfilter.ip.v6.src_ip6));
3825 break;
3826 default:
3827 /* TC filter can be configured based on different combinations
3828 * and in this case IP is not a part of filter config
3829 */
3830 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3831 vf->vf_id);
3832 }
3833
3834 /* get the vsi to which the tc belongs to */
3835 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3836 cfilter.seid = vsi->seid;
3837 cfilter.flags = vcf->field_flags;
3838
3839 /* Deleting TC filter */
3840 if (tcf.dst_port)
3841 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3842 else
3843 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3844 if (ret) {
3845 dev_err(&pf->pdev->dev,
3846 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3847 vf->vf_id, ERR_PTR(ret),
3848 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3849 goto err;
3850 }
3851
3852 hlist_for_each_entry_safe(cf, node,
3853 &vf->cloud_filter_list, cloud_node) {
3854 if (cf->seid != cfilter.seid)
3855 continue;
3856 if (mask.dst_port)
3857 if (cfilter.dst_port != cf->dst_port)
3858 continue;
3859 if (mask.dst_mac[0])
3860 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3861 continue;
3862 /* for ipv4 data to be valid, only first byte of mask is set */
3863 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3864 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3865 ARRAY_SIZE(tcf.dst_ip)))
3866 continue;
3867 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3868 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3869 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3870 sizeof(cfilter.ip.v6.src_ip6)))
3871 continue;
3872 if (mask.vlan_id)
3873 if (cfilter.vlan_id != cf->vlan_id)
3874 continue;
3875
3876 hlist_del(&cf->cloud_node);
3877 kfree(cf);
3878 vf->num_cloud_filters--;
3879 }
3880
3881err:
3882 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3883 aq_ret);
3884}
3885
3886/**
3887 * i40e_vc_add_cloud_filter
3888 * @vf: pointer to the VF info
3889 * @msg: pointer to the msg buffer
3890 *
3891 * This function adds a cloud filter programmed as TC filter for ADq
3892 **/
3893static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3894{
3895 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3896 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3897 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3898 struct i40e_cloud_filter *cfilter = NULL;
3899 struct i40e_pf *pf = vf->pf;
3900 struct i40e_vsi *vsi = NULL;
3901 int aq_ret = 0;
3902 int i;
3903
3904 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3905 aq_ret = -EINVAL;
3906 goto err_out;
3907 }
3908
3909 if (!vf->adq_enabled) {
3910 dev_info(&pf->pdev->dev,
3911 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3912 vf->vf_id);
3913 aq_ret = -EINVAL;
3914 goto err_out;
3915 }
3916
3917 if (i40e_validate_cloud_filter(vf, vcf)) {
3918 dev_info(&pf->pdev->dev,
3919 "VF %d: Invalid input/s, can't apply cloud filter\n",
3920 vf->vf_id);
3921 aq_ret = -EINVAL;
3922 goto err_out;
3923 }
3924
3925 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3926 if (!cfilter) {
3927 aq_ret = -ENOMEM;
3928 goto err_out;
3929 }
3930
3931 /* parse destination mac address */
3932 for (i = 0; i < ETH_ALEN; i++)
3933 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3934
3935 /* parse source mac address */
3936 for (i = 0; i < ETH_ALEN; i++)
3937 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3938
3939 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3940 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3941 cfilter->src_port = mask.src_port & tcf.src_port;
3942
3943 switch (vcf->flow_type) {
3944 case VIRTCHNL_TCP_V4_FLOW:
3945 cfilter->n_proto = ETH_P_IP;
3946 if (mask.dst_ip[0] & tcf.dst_ip[0])
3947 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3948 ARRAY_SIZE(tcf.dst_ip));
3949 else if (mask.src_ip[0] & tcf.dst_ip[0])
3950 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3951 ARRAY_SIZE(tcf.dst_ip));
3952 break;
3953 case VIRTCHNL_TCP_V6_FLOW:
3954 cfilter->n_proto = ETH_P_IPV6;
3955 if (mask.dst_ip[3] & tcf.dst_ip[3])
3956 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3957 sizeof(cfilter->ip.v6.dst_ip6));
3958 if (mask.src_ip[3] & tcf.src_ip[3])
3959 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3960 sizeof(cfilter->ip.v6.src_ip6));
3961 break;
3962 default:
3963 /* TC filter can be configured based on different combinations
3964 * and in this case IP is not a part of filter config
3965 */
3966 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3967 vf->vf_id);
3968 }
3969
3970 /* get the VSI to which the TC belongs to */
3971 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3972 cfilter->seid = vsi->seid;
3973 cfilter->flags = vcf->field_flags;
3974
3975 /* Adding cloud filter programmed as TC filter */
3976 if (tcf.dst_port)
3977 aq_ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3978 else
3979 aq_ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3980 if (aq_ret) {
3981 dev_err(&pf->pdev->dev,
3982 "VF %d: Failed to add cloud filter, err %pe aq_err %s\n",
3983 vf->vf_id, ERR_PTR(aq_ret),
3984 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3985 goto err_free;
3986 }
3987
3988 INIT_HLIST_NODE(&cfilter->cloud_node);
3989 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3990 /* release the pointer passing it to the collection */
3991 cfilter = NULL;
3992 vf->num_cloud_filters++;
3993err_free:
3994 kfree(cfilter);
3995err_out:
3996 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
3997 aq_ret);
3998}
3999
4000/**
4001 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
4002 * @vf: pointer to the VF info
4003 * @msg: pointer to the msg buffer
4004 **/
4005static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
4006{
4007 struct virtchnl_tc_info *tci =
4008 (struct virtchnl_tc_info *)msg;
4009 struct i40e_pf *pf = vf->pf;
4010 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4011 int i, adq_request_qps = 0;
4012 int aq_ret = 0;
4013 u64 speed = 0;
4014
4015 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4016 aq_ret = -EINVAL;
4017 goto err;
4018 }
4019
4020 /* ADq cannot be applied if spoof check is ON */
4021 if (vf->spoofchk) {
4022 dev_err(&pf->pdev->dev,
4023 "Spoof check is ON, turn it OFF to enable ADq\n");
4024 aq_ret = -EINVAL;
4025 goto err;
4026 }
4027
4028 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
4029 dev_err(&pf->pdev->dev,
4030 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
4031 vf->vf_id);
4032 aq_ret = -EINVAL;
4033 goto err;
4034 }
4035
4036 /* max number of traffic classes for VF currently capped at 4 */
4037 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
4038 dev_err(&pf->pdev->dev,
4039 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
4040 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
4041 aq_ret = -EINVAL;
4042 goto err;
4043 }
4044
4045 /* validate queues for each TC */
4046 for (i = 0; i < tci->num_tc; i++)
4047 if (!tci->list[i].count ||
4048 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
4049 dev_err(&pf->pdev->dev,
4050 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
4051 vf->vf_id, i, tci->list[i].count,
4052 I40E_DEFAULT_QUEUES_PER_VF);
4053 aq_ret = -EINVAL;
4054 goto err;
4055 }
4056
4057 /* need Max VF queues but already have default number of queues */
4058 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
4059
4060 if (pf->queues_left < adq_request_qps) {
4061 dev_err(&pf->pdev->dev,
4062 "No queues left to allocate to VF %d\n",
4063 vf->vf_id);
4064 aq_ret = -EINVAL;
4065 goto err;
4066 } else {
4067 /* we need to allocate max VF queues to enable ADq so as to
4068 * make sure ADq enabled VF always gets back queues when it
4069 * goes through a reset.
4070 */
4071 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
4072 }
4073
4074 /* get link speed in MB to validate rate limit */
4075 speed = i40e_vc_link_speed2mbps(ls->link_speed);
4076 if (speed == SPEED_UNKNOWN) {
4077 dev_err(&pf->pdev->dev,
4078 "Cannot detect link speed\n");
4079 aq_ret = -EINVAL;
4080 goto err;
4081 }
4082
4083 /* parse data from the queue channel info */
4084 vf->num_tc = tci->num_tc;
4085 for (i = 0; i < vf->num_tc; i++) {
4086 if (tci->list[i].max_tx_rate) {
4087 if (tci->list[i].max_tx_rate > speed) {
4088 dev_err(&pf->pdev->dev,
4089 "Invalid max tx rate %llu specified for VF %d.",
4090 tci->list[i].max_tx_rate,
4091 vf->vf_id);
4092 aq_ret = -EINVAL;
4093 goto err;
4094 } else {
4095 vf->ch[i].max_tx_rate =
4096 tci->list[i].max_tx_rate;
4097 }
4098 }
4099 vf->ch[i].num_qps = tci->list[i].count;
4100 }
4101
4102 /* set this flag only after making sure all inputs are sane */
4103 vf->adq_enabled = true;
4104
4105 /* reset the VF in order to allocate resources */
4106 i40e_vc_reset_vf(vf, true);
4107
4108 return 0;
4109
4110 /* send the response to the VF */
4111err:
4112 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
4113 aq_ret);
4114}
4115
4116/**
4117 * i40e_vc_del_qch_msg
4118 * @vf: pointer to the VF info
4119 * @msg: pointer to the msg buffer
4120 **/
4121static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
4122{
4123 struct i40e_pf *pf = vf->pf;
4124 int aq_ret = 0;
4125
4126 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4127 aq_ret = -EINVAL;
4128 goto err;
4129 }
4130
4131 if (vf->adq_enabled) {
4132 i40e_del_all_cloud_filters(vf);
4133 i40e_del_qch(vf);
4134 vf->adq_enabled = false;
4135 vf->num_tc = 0;
4136 dev_info(&pf->pdev->dev,
4137 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
4138 vf->vf_id);
4139 } else {
4140 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
4141 vf->vf_id);
4142 aq_ret = -EINVAL;
4143 }
4144
4145 /* reset the VF in order to allocate resources */
4146 i40e_vc_reset_vf(vf, true);
4147
4148 return 0;
4149
4150err:
4151 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
4152 aq_ret);
4153}
4154
4155/**
4156 * i40e_vc_process_vf_msg
4157 * @pf: pointer to the PF structure
4158 * @vf_id: source VF id
4159 * @v_opcode: operation code
4160 * @v_retval: unused return value code
4161 * @msg: pointer to the msg buffer
4162 * @msglen: msg length
4163 *
4164 * called from the common aeq/arq handler to
4165 * process request from VF
4166 **/
4167int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4168 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4169{
4170 struct i40e_hw *hw = &pf->hw;
4171 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4172 struct i40e_vf *vf;
4173 int ret;
4174
4175 pf->vf_aq_requests++;
4176 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4177 return -EINVAL;
4178 vf = &(pf->vf[local_vf_id]);
4179
4180 /* Check if VF is disabled. */
4181 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4182 return -EINVAL;
4183
4184 /* perform basic checks on the msg */
4185 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4186
4187 if (ret) {
4188 i40e_vc_send_resp_to_vf(vf, v_opcode, -EINVAL);
4189 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4190 local_vf_id, v_opcode, msglen);
4191 return ret;
4192 }
4193
4194 switch (v_opcode) {
4195 case VIRTCHNL_OP_VERSION:
4196 ret = i40e_vc_get_version_msg(vf, msg);
4197 break;
4198 case VIRTCHNL_OP_GET_VF_RESOURCES:
4199 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4200 i40e_vc_notify_vf_link_state(vf);
4201 break;
4202 case VIRTCHNL_OP_RESET_VF:
4203 i40e_vc_reset_vf(vf, false);
4204 ret = 0;
4205 break;
4206 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4207 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4208 break;
4209 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4210 ret = i40e_vc_config_queues_msg(vf, msg);
4211 break;
4212 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4213 ret = i40e_vc_config_irq_map_msg(vf, msg);
4214 break;
4215 case VIRTCHNL_OP_ENABLE_QUEUES:
4216 ret = i40e_vc_enable_queues_msg(vf, msg);
4217 i40e_vc_notify_vf_link_state(vf);
4218 break;
4219 case VIRTCHNL_OP_DISABLE_QUEUES:
4220 ret = i40e_vc_disable_queues_msg(vf, msg);
4221 break;
4222 case VIRTCHNL_OP_ADD_ETH_ADDR:
4223 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4224 break;
4225 case VIRTCHNL_OP_DEL_ETH_ADDR:
4226 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4227 break;
4228 case VIRTCHNL_OP_ADD_VLAN:
4229 ret = i40e_vc_add_vlan_msg(vf, msg);
4230 break;
4231 case VIRTCHNL_OP_DEL_VLAN:
4232 ret = i40e_vc_remove_vlan_msg(vf, msg);
4233 break;
4234 case VIRTCHNL_OP_GET_STATS:
4235 ret = i40e_vc_get_stats_msg(vf, msg);
4236 break;
4237 case VIRTCHNL_OP_RDMA:
4238 ret = i40e_vc_rdma_msg(vf, msg, msglen);
4239 break;
4240 case VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP:
4241 ret = i40e_vc_rdma_qvmap_msg(vf, msg, true);
4242 break;
4243 case VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP:
4244 ret = i40e_vc_rdma_qvmap_msg(vf, msg, false);
4245 break;
4246 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4247 ret = i40e_vc_config_rss_key(vf, msg);
4248 break;
4249 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4250 ret = i40e_vc_config_rss_lut(vf, msg);
4251 break;
4252 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4253 ret = i40e_vc_get_rss_hena(vf, msg);
4254 break;
4255 case VIRTCHNL_OP_SET_RSS_HENA:
4256 ret = i40e_vc_set_rss_hena(vf, msg);
4257 break;
4258 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4259 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4260 break;
4261 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4262 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4263 break;
4264 case VIRTCHNL_OP_REQUEST_QUEUES:
4265 ret = i40e_vc_request_queues_msg(vf, msg);
4266 break;
4267 case VIRTCHNL_OP_ENABLE_CHANNELS:
4268 ret = i40e_vc_add_qch_msg(vf, msg);
4269 break;
4270 case VIRTCHNL_OP_DISABLE_CHANNELS:
4271 ret = i40e_vc_del_qch_msg(vf, msg);
4272 break;
4273 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4274 ret = i40e_vc_add_cloud_filter(vf, msg);
4275 break;
4276 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4277 ret = i40e_vc_del_cloud_filter(vf, msg);
4278 break;
4279 case VIRTCHNL_OP_UNKNOWN:
4280 default:
4281 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4282 v_opcode, local_vf_id);
4283 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4284 -EOPNOTSUPP);
4285 break;
4286 }
4287
4288 return ret;
4289}
4290
4291/**
4292 * i40e_vc_process_vflr_event
4293 * @pf: pointer to the PF structure
4294 *
4295 * called from the vlfr irq handler to
4296 * free up VF resources and state variables
4297 **/
4298int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4299{
4300 struct i40e_hw *hw = &pf->hw;
4301 u32 reg, reg_idx, bit_idx;
4302 struct i40e_vf *vf;
4303 int vf_id;
4304
4305 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4306 return 0;
4307
4308 /* Re-enable the VFLR interrupt cause here, before looking for which
4309 * VF got reset. Otherwise, if another VF gets a reset while the
4310 * first one is being processed, that interrupt will be lost, and
4311 * that VF will be stuck in reset forever.
4312 */
4313 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4314 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4315 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4316 i40e_flush(hw);
4317
4318 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4319 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4320 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4321 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4322 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4323 vf = &pf->vf[vf_id];
4324 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4325 if (reg & BIT(bit_idx))
4326 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4327 i40e_reset_vf(vf, true);
4328 }
4329
4330 return 0;
4331}
4332
4333/**
4334 * i40e_validate_vf
4335 * @pf: the physical function
4336 * @vf_id: VF identifier
4337 *
4338 * Check that the VF is enabled and the VSI exists.
4339 *
4340 * Returns 0 on success, negative on failure
4341 **/
4342static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4343{
4344 struct i40e_vsi *vsi;
4345 struct i40e_vf *vf;
4346 int ret = 0;
4347
4348 if (vf_id >= pf->num_alloc_vfs) {
4349 dev_err(&pf->pdev->dev,
4350 "Invalid VF Identifier %d\n", vf_id);
4351 ret = -EINVAL;
4352 goto err_out;
4353 }
4354 vf = &pf->vf[vf_id];
4355 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4356 if (!vsi)
4357 ret = -EINVAL;
4358err_out:
4359 return ret;
4360}
4361
4362/**
4363 * i40e_check_vf_init_timeout
4364 * @vf: the virtual function
4365 *
4366 * Check that the VF's initialization was successfully done and if not
4367 * wait up to 300ms for its finish.
4368 *
4369 * Returns true when VF is initialized, false on timeout
4370 **/
4371static bool i40e_check_vf_init_timeout(struct i40e_vf *vf)
4372{
4373 int i;
4374
4375 /* When the VF is resetting wait until it is done.
4376 * It can take up to 200 milliseconds, but wait for
4377 * up to 300 milliseconds to be safe.
4378 */
4379 for (i = 0; i < 15; i++) {
4380 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4381 return true;
4382 msleep(20);
4383 }
4384
4385 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4386 dev_err(&vf->pf->pdev->dev,
4387 "VF %d still in reset. Try again.\n", vf->vf_id);
4388 return false;
4389 }
4390
4391 return true;
4392}
4393
4394/**
4395 * i40e_ndo_set_vf_mac
4396 * @netdev: network interface device structure
4397 * @vf_id: VF identifier
4398 * @mac: mac address
4399 *
4400 * program VF mac address
4401 **/
4402int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4403{
4404 struct i40e_netdev_priv *np = netdev_priv(netdev);
4405 struct i40e_vsi *vsi = np->vsi;
4406 struct i40e_pf *pf = vsi->back;
4407 struct i40e_mac_filter *f;
4408 struct i40e_vf *vf;
4409 int ret = 0;
4410 struct hlist_node *h;
4411 int bkt;
4412
4413 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4414 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4415 return -EAGAIN;
4416 }
4417
4418 /* validate the request */
4419 ret = i40e_validate_vf(pf, vf_id);
4420 if (ret)
4421 goto error_param;
4422
4423 vf = &pf->vf[vf_id];
4424 if (!i40e_check_vf_init_timeout(vf)) {
4425 ret = -EAGAIN;
4426 goto error_param;
4427 }
4428 vsi = pf->vsi[vf->lan_vsi_idx];
4429
4430 if (is_multicast_ether_addr(mac)) {
4431 dev_err(&pf->pdev->dev,
4432 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4433 ret = -EINVAL;
4434 goto error_param;
4435 }
4436
4437 /* Lock once because below invoked function add/del_filter requires
4438 * mac_filter_hash_lock to be held
4439 */
4440 spin_lock_bh(&vsi->mac_filter_hash_lock);
4441
4442 /* delete the temporary mac address */
4443 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4444 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4445
4446 /* Delete all the filters for this VSI - we're going to kill it
4447 * anyway.
4448 */
4449 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4450 __i40e_del_filter(vsi, f);
4451
4452 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4453
4454 /* program mac filter */
4455 if (i40e_sync_vsi_filters(vsi)) {
4456 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4457 ret = -EIO;
4458 goto error_param;
4459 }
4460 ether_addr_copy(vf->default_lan_addr.addr, mac);
4461
4462 if (is_zero_ether_addr(mac)) {
4463 vf->pf_set_mac = false;
4464 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4465 } else {
4466 vf->pf_set_mac = true;
4467 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4468 mac, vf_id);
4469 }
4470
4471 /* Force the VF interface down so it has to bring up with new MAC
4472 * address
4473 */
4474 i40e_vc_reset_vf(vf, true);
4475 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4476
4477error_param:
4478 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4479 return ret;
4480}
4481
4482/**
4483 * i40e_ndo_set_vf_port_vlan
4484 * @netdev: network interface device structure
4485 * @vf_id: VF identifier
4486 * @vlan_id: mac address
4487 * @qos: priority setting
4488 * @vlan_proto: vlan protocol
4489 *
4490 * program VF vlan id and/or qos
4491 **/
4492int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4493 u16 vlan_id, u8 qos, __be16 vlan_proto)
4494{
4495 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4496 struct i40e_netdev_priv *np = netdev_priv(netdev);
4497 bool allmulti = false, alluni = false;
4498 struct i40e_pf *pf = np->vsi->back;
4499 struct i40e_vsi *vsi;
4500 struct i40e_vf *vf;
4501 int ret = 0;
4502
4503 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4504 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4505 return -EAGAIN;
4506 }
4507
4508 /* validate the request */
4509 ret = i40e_validate_vf(pf, vf_id);
4510 if (ret)
4511 goto error_pvid;
4512
4513 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4514 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4515 ret = -EINVAL;
4516 goto error_pvid;
4517 }
4518
4519 if (vlan_proto != htons(ETH_P_8021Q)) {
4520 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4521 ret = -EPROTONOSUPPORT;
4522 goto error_pvid;
4523 }
4524
4525 vf = &pf->vf[vf_id];
4526 if (!i40e_check_vf_init_timeout(vf)) {
4527 ret = -EAGAIN;
4528 goto error_pvid;
4529 }
4530 vsi = pf->vsi[vf->lan_vsi_idx];
4531
4532 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4533 /* duplicate request, so just return success */
4534 goto error_pvid;
4535
4536 i40e_vlan_stripping_enable(vsi);
4537
4538 /* Locked once because multiple functions below iterate list */
4539 spin_lock_bh(&vsi->mac_filter_hash_lock);
4540
4541 /* Check for condition where there was already a port VLAN ID
4542 * filter set and now it is being deleted by setting it to zero.
4543 * Additionally check for the condition where there was a port
4544 * VLAN but now there is a new and different port VLAN being set.
4545 * Before deleting all the old VLAN filters we must add new ones
4546 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4547 * MAC addresses deleted.
4548 */
4549 if ((!(vlan_id || qos) ||
4550 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4551 vsi->info.pvid) {
4552 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4553 if (ret) {
4554 dev_info(&vsi->back->pdev->dev,
4555 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4556 vsi->back->hw.aq.asq_last_status);
4557 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4558 goto error_pvid;
4559 }
4560 }
4561
4562 if (vsi->info.pvid) {
4563 /* remove all filters on the old VLAN */
4564 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4565 VLAN_VID_MASK));
4566 }
4567
4568 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4569
4570 /* disable promisc modes in case they were enabled */
4571 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4572 allmulti, alluni);
4573 if (ret) {
4574 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4575 goto error_pvid;
4576 }
4577
4578 if (vlan_id || qos)
4579 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4580 else
4581 i40e_vsi_remove_pvid(vsi);
4582 spin_lock_bh(&vsi->mac_filter_hash_lock);
4583
4584 if (vlan_id) {
4585 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4586 vlan_id, qos, vf_id);
4587
4588 /* add new VLAN filter for each MAC */
4589 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4590 if (ret) {
4591 dev_info(&vsi->back->pdev->dev,
4592 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4593 vsi->back->hw.aq.asq_last_status);
4594 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4595 goto error_pvid;
4596 }
4597
4598 /* remove the previously added non-VLAN MAC filters */
4599 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4600 }
4601
4602 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4603
4604 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4605 alluni = true;
4606
4607 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4608 allmulti = true;
4609
4610 /* Schedule the worker thread to take care of applying changes */
4611 i40e_service_event_schedule(vsi->back);
4612
4613 if (ret) {
4614 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4615 goto error_pvid;
4616 }
4617
4618 /* The Port VLAN needs to be saved across resets the same as the
4619 * default LAN MAC address.
4620 */
4621 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4622
4623 i40e_vc_reset_vf(vf, true);
4624 /* During reset the VF got a new VSI, so refresh a pointer. */
4625 vsi = pf->vsi[vf->lan_vsi_idx];
4626
4627 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4628 if (ret) {
4629 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4630 goto error_pvid;
4631 }
4632
4633 ret = 0;
4634
4635error_pvid:
4636 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4637 return ret;
4638}
4639
4640/**
4641 * i40e_ndo_set_vf_bw
4642 * @netdev: network interface device structure
4643 * @vf_id: VF identifier
4644 * @min_tx_rate: Minimum Tx rate
4645 * @max_tx_rate: Maximum Tx rate
4646 *
4647 * configure VF Tx rate
4648 **/
4649int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4650 int max_tx_rate)
4651{
4652 struct i40e_netdev_priv *np = netdev_priv(netdev);
4653 struct i40e_pf *pf = np->vsi->back;
4654 struct i40e_vsi *vsi;
4655 struct i40e_vf *vf;
4656 int ret = 0;
4657
4658 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4659 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4660 return -EAGAIN;
4661 }
4662
4663 /* validate the request */
4664 ret = i40e_validate_vf(pf, vf_id);
4665 if (ret)
4666 goto error;
4667
4668 if (min_tx_rate) {
4669 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4670 min_tx_rate, vf_id);
4671 ret = -EINVAL;
4672 goto error;
4673 }
4674
4675 vf = &pf->vf[vf_id];
4676 if (!i40e_check_vf_init_timeout(vf)) {
4677 ret = -EAGAIN;
4678 goto error;
4679 }
4680 vsi = pf->vsi[vf->lan_vsi_idx];
4681
4682 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4683 if (ret)
4684 goto error;
4685
4686 vf->tx_rate = max_tx_rate;
4687error:
4688 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4689 return ret;
4690}
4691
4692/**
4693 * i40e_ndo_get_vf_config
4694 * @netdev: network interface device structure
4695 * @vf_id: VF identifier
4696 * @ivi: VF configuration structure
4697 *
4698 * return VF configuration
4699 **/
4700int i40e_ndo_get_vf_config(struct net_device *netdev,
4701 int vf_id, struct ifla_vf_info *ivi)
4702{
4703 struct i40e_netdev_priv *np = netdev_priv(netdev);
4704 struct i40e_vsi *vsi = np->vsi;
4705 struct i40e_pf *pf = vsi->back;
4706 struct i40e_vf *vf;
4707 int ret = 0;
4708
4709 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4710 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4711 return -EAGAIN;
4712 }
4713
4714 /* validate the request */
4715 ret = i40e_validate_vf(pf, vf_id);
4716 if (ret)
4717 goto error_param;
4718
4719 vf = &pf->vf[vf_id];
4720 /* first vsi is always the LAN vsi */
4721 vsi = pf->vsi[vf->lan_vsi_idx];
4722 if (!vsi) {
4723 ret = -ENOENT;
4724 goto error_param;
4725 }
4726
4727 ivi->vf = vf_id;
4728
4729 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4730
4731 ivi->max_tx_rate = vf->tx_rate;
4732 ivi->min_tx_rate = 0;
4733 ivi->vlan = le16_get_bits(vsi->info.pvid, I40E_VLAN_MASK);
4734 ivi->qos = le16_get_bits(vsi->info.pvid, I40E_PRIORITY_MASK);
4735 if (vf->link_forced == false)
4736 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4737 else if (vf->link_up == true)
4738 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4739 else
4740 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4741 ivi->spoofchk = vf->spoofchk;
4742 ivi->trusted = vf->trusted;
4743 ret = 0;
4744
4745error_param:
4746 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4747 return ret;
4748}
4749
4750/**
4751 * i40e_ndo_set_vf_link_state
4752 * @netdev: network interface device structure
4753 * @vf_id: VF identifier
4754 * @link: required link state
4755 *
4756 * Set the link state of a specified VF, regardless of physical link state
4757 **/
4758int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4759{
4760 struct i40e_netdev_priv *np = netdev_priv(netdev);
4761 struct i40e_pf *pf = np->vsi->back;
4762 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4763 struct virtchnl_pf_event pfe;
4764 struct i40e_hw *hw = &pf->hw;
4765 struct i40e_vsi *vsi;
4766 unsigned long q_map;
4767 struct i40e_vf *vf;
4768 int abs_vf_id;
4769 int ret = 0;
4770 int tmp;
4771
4772 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4773 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4774 return -EAGAIN;
4775 }
4776
4777 /* validate the request */
4778 if (vf_id >= pf->num_alloc_vfs) {
4779 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4780 ret = -EINVAL;
4781 goto error_out;
4782 }
4783
4784 vf = &pf->vf[vf_id];
4785 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4786
4787 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4788 pfe.severity = PF_EVENT_SEVERITY_INFO;
4789
4790 switch (link) {
4791 case IFLA_VF_LINK_STATE_AUTO:
4792 vf->link_forced = false;
4793 vf->is_disabled_from_host = false;
4794 /* reset needed to reinit VF resources */
4795 i40e_vc_reset_vf(vf, true);
4796 i40e_set_vf_link_state(vf, &pfe, ls);
4797 break;
4798 case IFLA_VF_LINK_STATE_ENABLE:
4799 vf->link_forced = true;
4800 vf->link_up = true;
4801 vf->is_disabled_from_host = false;
4802 /* reset needed to reinit VF resources */
4803 i40e_vc_reset_vf(vf, true);
4804 i40e_set_vf_link_state(vf, &pfe, ls);
4805 break;
4806 case IFLA_VF_LINK_STATE_DISABLE:
4807 vf->link_forced = true;
4808 vf->link_up = false;
4809 i40e_set_vf_link_state(vf, &pfe, ls);
4810
4811 vsi = pf->vsi[vf->lan_vsi_idx];
4812 q_map = BIT(vsi->num_queue_pairs) - 1;
4813
4814 vf->is_disabled_from_host = true;
4815
4816 /* Try to stop both Tx&Rx rings even if one of the calls fails
4817 * to ensure we stop the rings even in case of errors.
4818 * If any of them returns with an error then the first
4819 * error that occurred will be returned.
4820 */
4821 tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false);
4822 ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false);
4823
4824 ret = tmp ? tmp : ret;
4825 break;
4826 default:
4827 ret = -EINVAL;
4828 goto error_out;
4829 }
4830 /* Notify the VF of its new link state */
4831 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4832 0, (u8 *)&pfe, sizeof(pfe), NULL);
4833
4834error_out:
4835 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4836 return ret;
4837}
4838
4839/**
4840 * i40e_ndo_set_vf_spoofchk
4841 * @netdev: network interface device structure
4842 * @vf_id: VF identifier
4843 * @enable: flag to enable or disable feature
4844 *
4845 * Enable or disable VF spoof checking
4846 **/
4847int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4848{
4849 struct i40e_netdev_priv *np = netdev_priv(netdev);
4850 struct i40e_vsi *vsi = np->vsi;
4851 struct i40e_pf *pf = vsi->back;
4852 struct i40e_vsi_context ctxt;
4853 struct i40e_hw *hw = &pf->hw;
4854 struct i40e_vf *vf;
4855 int ret = 0;
4856
4857 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4858 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4859 return -EAGAIN;
4860 }
4861
4862 /* validate the request */
4863 if (vf_id >= pf->num_alloc_vfs) {
4864 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4865 ret = -EINVAL;
4866 goto out;
4867 }
4868
4869 vf = &(pf->vf[vf_id]);
4870 if (!i40e_check_vf_init_timeout(vf)) {
4871 ret = -EAGAIN;
4872 goto out;
4873 }
4874
4875 if (enable == vf->spoofchk)
4876 goto out;
4877
4878 vf->spoofchk = enable;
4879 memset(&ctxt, 0, sizeof(ctxt));
4880 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4881 ctxt.pf_num = pf->hw.pf_id;
4882 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4883 if (enable)
4884 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4885 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4886 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4887 if (ret) {
4888 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4889 ret);
4890 ret = -EIO;
4891 }
4892out:
4893 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4894 return ret;
4895}
4896
4897/**
4898 * i40e_ndo_set_vf_trust
4899 * @netdev: network interface device structure of the pf
4900 * @vf_id: VF identifier
4901 * @setting: trust setting
4902 *
4903 * Enable or disable VF trust setting
4904 **/
4905int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4906{
4907 struct i40e_netdev_priv *np = netdev_priv(netdev);
4908 struct i40e_pf *pf = np->vsi->back;
4909 struct i40e_vf *vf;
4910 int ret = 0;
4911
4912 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4913 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4914 return -EAGAIN;
4915 }
4916
4917 /* validate the request */
4918 if (vf_id >= pf->num_alloc_vfs) {
4919 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4920 ret = -EINVAL;
4921 goto out;
4922 }
4923
4924 if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
4925 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4926 ret = -EINVAL;
4927 goto out;
4928 }
4929
4930 vf = &pf->vf[vf_id];
4931
4932 if (setting == vf->trusted)
4933 goto out;
4934
4935 vf->trusted = setting;
4936
4937 /* request PF to sync mac/vlan filters for the VF */
4938 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
4939 pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
4940
4941 i40e_vc_reset_vf(vf, true);
4942 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4943 vf_id, setting ? "" : "un");
4944
4945 if (vf->adq_enabled) {
4946 if (!vf->trusted) {
4947 dev_info(&pf->pdev->dev,
4948 "VF %u no longer Trusted, deleting all cloud filters\n",
4949 vf_id);
4950 i40e_del_all_cloud_filters(vf);
4951 }
4952 }
4953
4954out:
4955 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4956 return ret;
4957}
4958
4959/**
4960 * i40e_get_vf_stats - populate some stats for the VF
4961 * @netdev: the netdev of the PF
4962 * @vf_id: the host OS identifier (0-127)
4963 * @vf_stats: pointer to the OS memory to be initialized
4964 */
4965int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4966 struct ifla_vf_stats *vf_stats)
4967{
4968 struct i40e_netdev_priv *np = netdev_priv(netdev);
4969 struct i40e_pf *pf = np->vsi->back;
4970 struct i40e_eth_stats *stats;
4971 struct i40e_vsi *vsi;
4972 struct i40e_vf *vf;
4973
4974 /* validate the request */
4975 if (i40e_validate_vf(pf, vf_id))
4976 return -EINVAL;
4977
4978 vf = &pf->vf[vf_id];
4979 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4980 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4981 return -EBUSY;
4982 }
4983
4984 vsi = pf->vsi[vf->lan_vsi_idx];
4985 if (!vsi)
4986 return -EINVAL;
4987
4988 i40e_update_eth_stats(vsi);
4989 stats = &vsi->eth_stats;
4990
4991 memset(vf_stats, 0, sizeof(*vf_stats));
4992
4993 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4994 stats->rx_multicast;
4995 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
4996 stats->tx_multicast;
4997 vf_stats->rx_bytes = stats->rx_bytes;
4998 vf_stats->tx_bytes = stats->tx_bytes;
4999 vf_stats->broadcast = stats->rx_broadcast;
5000 vf_stats->multicast = stats->rx_multicast;
5001 vf_stats->rx_dropped = stats->rx_discards + stats->rx_discards_other;
5002 vf_stats->tx_dropped = stats->tx_discards;
5003
5004 return 0;
5005}
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4#include "i40e.h"
5
6/*********************notification routines***********************/
7
8/**
9 * i40e_vc_vf_broadcast
10 * @pf: pointer to the PF structure
11 * @v_opcode: operation code
12 * @v_retval: return value
13 * @msg: pointer to the msg buffer
14 * @msglen: msg length
15 *
16 * send a message to all VFs on a given PF
17 **/
18static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
19 enum virtchnl_ops v_opcode,
20 i40e_status v_retval, u8 *msg,
21 u16 msglen)
22{
23 struct i40e_hw *hw = &pf->hw;
24 struct i40e_vf *vf = pf->vf;
25 int i;
26
27 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
28 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
29 /* Not all vfs are enabled so skip the ones that are not */
30 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
31 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
32 continue;
33
34 /* Ignore return value on purpose - a given VF may fail, but
35 * we need to keep going and send to all of them
36 */
37 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
38 msg, msglen, NULL);
39 }
40}
41
42/**
43 * i40e_vc_link_speed2mbps
44 * converts i40e_aq_link_speed to integer value of Mbps
45 * @link_speed: the speed to convert
46 *
47 * return the speed as direct value of Mbps.
48 **/
49static u32
50i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)
51{
52 switch (link_speed) {
53 case I40E_LINK_SPEED_100MB:
54 return SPEED_100;
55 case I40E_LINK_SPEED_1GB:
56 return SPEED_1000;
57 case I40E_LINK_SPEED_2_5GB:
58 return SPEED_2500;
59 case I40E_LINK_SPEED_5GB:
60 return SPEED_5000;
61 case I40E_LINK_SPEED_10GB:
62 return SPEED_10000;
63 case I40E_LINK_SPEED_20GB:
64 return SPEED_20000;
65 case I40E_LINK_SPEED_25GB:
66 return SPEED_25000;
67 case I40E_LINK_SPEED_40GB:
68 return SPEED_40000;
69 case I40E_LINK_SPEED_UNKNOWN:
70 return SPEED_UNKNOWN;
71 }
72 return SPEED_UNKNOWN;
73}
74
75/**
76 * i40e_set_vf_link_state
77 * @vf: pointer to the VF structure
78 * @pfe: pointer to PF event structure
79 * @ls: pointer to link status structure
80 *
81 * set a link state on a single vf
82 **/
83static void i40e_set_vf_link_state(struct i40e_vf *vf,
84 struct virtchnl_pf_event *pfe, struct i40e_link_status *ls)
85{
86 u8 link_status = ls->link_info & I40E_AQ_LINK_UP;
87
88 if (vf->link_forced)
89 link_status = vf->link_up;
90
91 if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
92 pfe->event_data.link_event_adv.link_speed = link_status ?
93 i40e_vc_link_speed2mbps(ls->link_speed) : 0;
94 pfe->event_data.link_event_adv.link_status = link_status;
95 } else {
96 pfe->event_data.link_event.link_speed = link_status ?
97 i40e_virtchnl_link_speed(ls->link_speed) : 0;
98 pfe->event_data.link_event.link_status = link_status;
99 }
100}
101
102/**
103 * i40e_vc_notify_vf_link_state
104 * @vf: pointer to the VF structure
105 *
106 * send a link status message to a single VF
107 **/
108static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
109{
110 struct virtchnl_pf_event pfe;
111 struct i40e_pf *pf = vf->pf;
112 struct i40e_hw *hw = &pf->hw;
113 struct i40e_link_status *ls = &pf->hw.phy.link_info;
114 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
115
116 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
117 pfe.severity = PF_EVENT_SEVERITY_INFO;
118
119 i40e_set_vf_link_state(vf, &pfe, ls);
120
121 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
122 0, (u8 *)&pfe, sizeof(pfe), NULL);
123}
124
125/**
126 * i40e_vc_notify_link_state
127 * @pf: pointer to the PF structure
128 *
129 * send a link status message to all VFs on a given PF
130 **/
131void i40e_vc_notify_link_state(struct i40e_pf *pf)
132{
133 int i;
134
135 for (i = 0; i < pf->num_alloc_vfs; i++)
136 i40e_vc_notify_vf_link_state(&pf->vf[i]);
137}
138
139/**
140 * i40e_vc_notify_reset
141 * @pf: pointer to the PF structure
142 *
143 * indicate a pending reset to all VFs on a given PF
144 **/
145void i40e_vc_notify_reset(struct i40e_pf *pf)
146{
147 struct virtchnl_pf_event pfe;
148
149 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
150 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
151 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
152 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
153}
154
155/**
156 * i40e_vc_notify_vf_reset
157 * @vf: pointer to the VF structure
158 *
159 * indicate a pending reset to the given VF
160 **/
161void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
162{
163 struct virtchnl_pf_event pfe;
164 int abs_vf_id;
165
166 /* validate the request */
167 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
168 return;
169
170 /* verify if the VF is in either init or active before proceeding */
171 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
172 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
173 return;
174
175 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
176
177 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
178 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
179 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
180 0, (u8 *)&pfe,
181 sizeof(struct virtchnl_pf_event), NULL);
182}
183/***********************misc routines*****************************/
184
185/**
186 * i40e_vc_reset_vf
187 * @vf: pointer to the VF info
188 * @notify_vf: notify vf about reset or not
189 * Reset VF handler.
190 **/
191static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
192{
193 struct i40e_pf *pf = vf->pf;
194 int i;
195
196 if (notify_vf)
197 i40e_vc_notify_vf_reset(vf);
198
199 /* We want to ensure that an actual reset occurs initiated after this
200 * function was called. However, we do not want to wait forever, so
201 * we'll give a reasonable time and print a message if we failed to
202 * ensure a reset.
203 */
204 for (i = 0; i < 20; i++) {
205 /* If PF is in VFs releasing state reset VF is impossible,
206 * so leave it.
207 */
208 if (test_bit(__I40E_VFS_RELEASING, pf->state))
209 return;
210 if (i40e_reset_vf(vf, false))
211 return;
212 usleep_range(10000, 20000);
213 }
214
215 if (notify_vf)
216 dev_warn(&vf->pf->pdev->dev,
217 "Failed to initiate reset for VF %d after 200 milliseconds\n",
218 vf->vf_id);
219 else
220 dev_dbg(&vf->pf->pdev->dev,
221 "Failed to initiate reset for VF %d after 200 milliseconds\n",
222 vf->vf_id);
223}
224
225/**
226 * i40e_vc_isvalid_vsi_id
227 * @vf: pointer to the VF info
228 * @vsi_id: VF relative VSI id
229 *
230 * check for the valid VSI id
231 **/
232static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
233{
234 struct i40e_pf *pf = vf->pf;
235 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
236
237 return (vsi && (vsi->vf_id == vf->vf_id));
238}
239
240/**
241 * i40e_vc_isvalid_queue_id
242 * @vf: pointer to the VF info
243 * @vsi_id: vsi id
244 * @qid: vsi relative queue id
245 *
246 * check for the valid queue id
247 **/
248static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
249 u16 qid)
250{
251 struct i40e_pf *pf = vf->pf;
252 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
253
254 return (vsi && (qid < vsi->alloc_queue_pairs));
255}
256
257/**
258 * i40e_vc_isvalid_vector_id
259 * @vf: pointer to the VF info
260 * @vector_id: VF relative vector id
261 *
262 * check for the valid vector id
263 **/
264static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
265{
266 struct i40e_pf *pf = vf->pf;
267
268 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
269}
270
271/***********************vf resource mgmt routines*****************/
272
273/**
274 * i40e_vc_get_pf_queue_id
275 * @vf: pointer to the VF info
276 * @vsi_id: id of VSI as provided by the FW
277 * @vsi_queue_id: vsi relative queue id
278 *
279 * return PF relative queue id
280 **/
281static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
282 u8 vsi_queue_id)
283{
284 struct i40e_pf *pf = vf->pf;
285 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
286 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
287
288 if (!vsi)
289 return pf_queue_id;
290
291 if (le16_to_cpu(vsi->info.mapping_flags) &
292 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
293 pf_queue_id =
294 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
295 else
296 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
297 vsi_queue_id;
298
299 return pf_queue_id;
300}
301
302/**
303 * i40e_get_real_pf_qid
304 * @vf: pointer to the VF info
305 * @vsi_id: vsi id
306 * @queue_id: queue number
307 *
308 * wrapper function to get pf_queue_id handling ADq code as well
309 **/
310static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
311{
312 int i;
313
314 if (vf->adq_enabled) {
315 /* Although VF considers all the queues(can be 1 to 16) as its
316 * own but they may actually belong to different VSIs(up to 4).
317 * We need to find which queues belongs to which VSI.
318 */
319 for (i = 0; i < vf->num_tc; i++) {
320 if (queue_id < vf->ch[i].num_qps) {
321 vsi_id = vf->ch[i].vsi_id;
322 break;
323 }
324 /* find right queue id which is relative to a
325 * given VSI.
326 */
327 queue_id -= vf->ch[i].num_qps;
328 }
329 }
330
331 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
332}
333
334/**
335 * i40e_config_irq_link_list
336 * @vf: pointer to the VF info
337 * @vsi_id: id of VSI as given by the FW
338 * @vecmap: irq map info
339 *
340 * configure irq link list from the map
341 **/
342static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
343 struct virtchnl_vector_map *vecmap)
344{
345 unsigned long linklistmap = 0, tempmap;
346 struct i40e_pf *pf = vf->pf;
347 struct i40e_hw *hw = &pf->hw;
348 u16 vsi_queue_id, pf_queue_id;
349 enum i40e_queue_type qtype;
350 u16 next_q, vector_id, size;
351 u32 reg, reg_idx;
352 u16 itr_idx = 0;
353
354 vector_id = vecmap->vector_id;
355 /* setup the head */
356 if (0 == vector_id)
357 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
358 else
359 reg_idx = I40E_VPINT_LNKLSTN(
360 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
361 (vector_id - 1));
362
363 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
364 /* Special case - No queues mapped on this vector */
365 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
366 goto irq_list_done;
367 }
368 tempmap = vecmap->rxq_map;
369 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
370 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
371 vsi_queue_id));
372 }
373
374 tempmap = vecmap->txq_map;
375 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
376 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
377 vsi_queue_id + 1));
378 }
379
380 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
381 next_q = find_first_bit(&linklistmap, size);
382 if (unlikely(next_q == size))
383 goto irq_list_done;
384
385 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
386 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
387 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
388 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
389
390 wr32(hw, reg_idx, reg);
391
392 while (next_q < size) {
393 switch (qtype) {
394 case I40E_QUEUE_TYPE_RX:
395 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
396 itr_idx = vecmap->rxitr_idx;
397 break;
398 case I40E_QUEUE_TYPE_TX:
399 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
400 itr_idx = vecmap->txitr_idx;
401 break;
402 default:
403 break;
404 }
405
406 next_q = find_next_bit(&linklistmap, size, next_q + 1);
407 if (next_q < size) {
408 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
409 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
410 pf_queue_id = i40e_get_real_pf_qid(vf,
411 vsi_id,
412 vsi_queue_id);
413 } else {
414 pf_queue_id = I40E_QUEUE_END_OF_LIST;
415 qtype = 0;
416 }
417
418 /* format for the RQCTL & TQCTL regs is same */
419 reg = (vector_id) |
420 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
421 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
422 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
423 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
424 wr32(hw, reg_idx, reg);
425 }
426
427 /* if the vf is running in polling mode and using interrupt zero,
428 * need to disable auto-mask on enabling zero interrupt for VFs.
429 */
430 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
431 (vector_id == 0)) {
432 reg = rd32(hw, I40E_GLINT_CTL);
433 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
434 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
435 wr32(hw, I40E_GLINT_CTL, reg);
436 }
437 }
438
439irq_list_done:
440 i40e_flush(hw);
441}
442
443/**
444 * i40e_release_iwarp_qvlist
445 * @vf: pointer to the VF.
446 *
447 **/
448static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
449{
450 struct i40e_pf *pf = vf->pf;
451 struct virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
452 u32 msix_vf;
453 u32 i;
454
455 if (!vf->qvlist_info)
456 return;
457
458 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
459 for (i = 0; i < qvlist_info->num_vectors; i++) {
460 struct virtchnl_iwarp_qv_info *qv_info;
461 u32 next_q_index, next_q_type;
462 struct i40e_hw *hw = &pf->hw;
463 u32 v_idx, reg_idx, reg;
464
465 qv_info = &qvlist_info->qv_info[i];
466 if (!qv_info)
467 continue;
468 v_idx = qv_info->v_idx;
469 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
470 /* Figure out the queue after CEQ and make that the
471 * first queue.
472 */
473 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
474 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
475 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
476 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
477 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
478 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
479
480 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
481 reg = (next_q_index &
482 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
483 (next_q_type <<
484 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
485
486 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
487 }
488 }
489 kfree(vf->qvlist_info);
490 vf->qvlist_info = NULL;
491}
492
493/**
494 * i40e_config_iwarp_qvlist
495 * @vf: pointer to the VF info
496 * @qvlist_info: queue and vector list
497 *
498 * Return 0 on success or < 0 on error
499 **/
500static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
501 struct virtchnl_iwarp_qvlist_info *qvlist_info)
502{
503 struct i40e_pf *pf = vf->pf;
504 struct i40e_hw *hw = &pf->hw;
505 struct virtchnl_iwarp_qv_info *qv_info;
506 u32 v_idx, i, reg_idx, reg;
507 u32 next_q_idx, next_q_type;
508 u32 msix_vf;
509 int ret = 0;
510
511 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
512
513 if (qvlist_info->num_vectors > msix_vf) {
514 dev_warn(&pf->pdev->dev,
515 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
516 qvlist_info->num_vectors,
517 msix_vf);
518 ret = -EINVAL;
519 goto err_out;
520 }
521
522 kfree(vf->qvlist_info);
523 vf->qvlist_info = kzalloc(struct_size(vf->qvlist_info, qv_info,
524 qvlist_info->num_vectors - 1),
525 GFP_KERNEL);
526 if (!vf->qvlist_info) {
527 ret = -ENOMEM;
528 goto err_out;
529 }
530 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
531
532 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
533 for (i = 0; i < qvlist_info->num_vectors; i++) {
534 qv_info = &qvlist_info->qv_info[i];
535 if (!qv_info)
536 continue;
537
538 /* Validate vector id belongs to this vf */
539 if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) {
540 ret = -EINVAL;
541 goto err_free;
542 }
543
544 v_idx = qv_info->v_idx;
545
546 vf->qvlist_info->qv_info[i] = *qv_info;
547
548 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
549 /* We might be sharing the interrupt, so get the first queue
550 * index and type, push it down the list by adding the new
551 * queue on top. Also link it with the new queue in CEQCTL.
552 */
553 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
554 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
555 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
556 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
557 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
558
559 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
560 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
561 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
562 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
563 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
564 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
565 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
566 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
567
568 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
569 reg = (qv_info->ceq_idx &
570 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
571 (I40E_QUEUE_TYPE_PE_CEQ <<
572 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
573 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
574 }
575
576 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
577 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
578 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
579 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
580
581 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
582 }
583 }
584
585 return 0;
586err_free:
587 kfree(vf->qvlist_info);
588 vf->qvlist_info = NULL;
589err_out:
590 return ret;
591}
592
593/**
594 * i40e_config_vsi_tx_queue
595 * @vf: pointer to the VF info
596 * @vsi_id: id of VSI as provided by the FW
597 * @vsi_queue_id: vsi relative queue index
598 * @info: config. info
599 *
600 * configure tx queue
601 **/
602static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
603 u16 vsi_queue_id,
604 struct virtchnl_txq_info *info)
605{
606 struct i40e_pf *pf = vf->pf;
607 struct i40e_hw *hw = &pf->hw;
608 struct i40e_hmc_obj_txq tx_ctx;
609 struct i40e_vsi *vsi;
610 u16 pf_queue_id;
611 u32 qtx_ctl;
612 int ret = 0;
613
614 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
615 ret = -ENOENT;
616 goto error_context;
617 }
618 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
619 vsi = i40e_find_vsi_from_id(pf, vsi_id);
620 if (!vsi) {
621 ret = -ENOENT;
622 goto error_context;
623 }
624
625 /* clear the context structure first */
626 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
627
628 /* only set the required fields */
629 tx_ctx.base = info->dma_ring_addr / 128;
630 tx_ctx.qlen = info->ring_len;
631 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
632 tx_ctx.rdylist_act = 0;
633 tx_ctx.head_wb_ena = info->headwb_enabled;
634 tx_ctx.head_wb_addr = info->dma_headwb_addr;
635
636 /* clear the context in the HMC */
637 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
638 if (ret) {
639 dev_err(&pf->pdev->dev,
640 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
641 pf_queue_id, ret);
642 ret = -ENOENT;
643 goto error_context;
644 }
645
646 /* set the context in the HMC */
647 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
648 if (ret) {
649 dev_err(&pf->pdev->dev,
650 "Failed to set VF LAN Tx queue context %d error: %d\n",
651 pf_queue_id, ret);
652 ret = -ENOENT;
653 goto error_context;
654 }
655
656 /* associate this queue with the PCI VF function */
657 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
658 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
659 & I40E_QTX_CTL_PF_INDX_MASK);
660 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
661 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
662 & I40E_QTX_CTL_VFVM_INDX_MASK);
663 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
664 i40e_flush(hw);
665
666error_context:
667 return ret;
668}
669
670/**
671 * i40e_config_vsi_rx_queue
672 * @vf: pointer to the VF info
673 * @vsi_id: id of VSI as provided by the FW
674 * @vsi_queue_id: vsi relative queue index
675 * @info: config. info
676 *
677 * configure rx queue
678 **/
679static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
680 u16 vsi_queue_id,
681 struct virtchnl_rxq_info *info)
682{
683 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
684 struct i40e_pf *pf = vf->pf;
685 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
686 struct i40e_hw *hw = &pf->hw;
687 struct i40e_hmc_obj_rxq rx_ctx;
688 int ret = 0;
689
690 /* clear the context structure first */
691 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
692
693 /* only set the required fields */
694 rx_ctx.base = info->dma_ring_addr / 128;
695 rx_ctx.qlen = info->ring_len;
696
697 if (info->splithdr_enabled) {
698 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
699 I40E_RX_SPLIT_IP |
700 I40E_RX_SPLIT_TCP_UDP |
701 I40E_RX_SPLIT_SCTP;
702 /* header length validation */
703 if (info->hdr_size > ((2 * 1024) - 64)) {
704 ret = -EINVAL;
705 goto error_param;
706 }
707 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
708
709 /* set split mode 10b */
710 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
711 }
712
713 /* databuffer length validation */
714 if (info->databuffer_size > ((16 * 1024) - 128)) {
715 ret = -EINVAL;
716 goto error_param;
717 }
718 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
719
720 /* max pkt. length validation */
721 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
722 ret = -EINVAL;
723 goto error_param;
724 }
725 rx_ctx.rxmax = info->max_pkt_size;
726
727 /* if port VLAN is configured increase the max packet size */
728 if (vsi->info.pvid)
729 rx_ctx.rxmax += VLAN_HLEN;
730
731 /* enable 32bytes desc always */
732 rx_ctx.dsize = 1;
733
734 /* default values */
735 rx_ctx.lrxqthresh = 1;
736 rx_ctx.crcstrip = 1;
737 rx_ctx.prefena = 1;
738 rx_ctx.l2tsel = 1;
739
740 /* clear the context in the HMC */
741 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
742 if (ret) {
743 dev_err(&pf->pdev->dev,
744 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
745 pf_queue_id, ret);
746 ret = -ENOENT;
747 goto error_param;
748 }
749
750 /* set the context in the HMC */
751 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
752 if (ret) {
753 dev_err(&pf->pdev->dev,
754 "Failed to set VF LAN Rx queue context %d error: %d\n",
755 pf_queue_id, ret);
756 ret = -ENOENT;
757 goto error_param;
758 }
759
760error_param:
761 return ret;
762}
763
764/**
765 * i40e_alloc_vsi_res
766 * @vf: pointer to the VF info
767 * @idx: VSI index, applies only for ADq mode, zero otherwise
768 *
769 * alloc VF vsi context & resources
770 **/
771static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
772{
773 struct i40e_mac_filter *f = NULL;
774 struct i40e_pf *pf = vf->pf;
775 struct i40e_vsi *vsi;
776 u64 max_tx_rate = 0;
777 int ret = 0;
778
779 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid,
780 vf->vf_id);
781
782 if (!vsi) {
783 dev_err(&pf->pdev->dev,
784 "add vsi failed for VF %d, aq_err %d\n",
785 vf->vf_id, pf->hw.aq.asq_last_status);
786 ret = -ENOENT;
787 goto error_alloc_vsi_res;
788 }
789
790 if (!idx) {
791 u64 hena = i40e_pf_get_default_rss_hena(pf);
792 u8 broadcast[ETH_ALEN];
793
794 vf->lan_vsi_idx = vsi->idx;
795 vf->lan_vsi_id = vsi->id;
796 /* If the port VLAN has been configured and then the
797 * VF driver was removed then the VSI port VLAN
798 * configuration was destroyed. Check if there is
799 * a port VLAN and restore the VSI configuration if
800 * needed.
801 */
802 if (vf->port_vlan_id)
803 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
804
805 spin_lock_bh(&vsi->mac_filter_hash_lock);
806 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
807 f = i40e_add_mac_filter(vsi,
808 vf->default_lan_addr.addr);
809 if (!f)
810 dev_info(&pf->pdev->dev,
811 "Could not add MAC filter %pM for VF %d\n",
812 vf->default_lan_addr.addr, vf->vf_id);
813 }
814 eth_broadcast_addr(broadcast);
815 f = i40e_add_mac_filter(vsi, broadcast);
816 if (!f)
817 dev_info(&pf->pdev->dev,
818 "Could not allocate VF broadcast filter\n");
819 spin_unlock_bh(&vsi->mac_filter_hash_lock);
820 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
821 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
822 /* program mac filter only for VF VSI */
823 ret = i40e_sync_vsi_filters(vsi);
824 if (ret)
825 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
826 }
827
828 /* storing VSI index and id for ADq and don't apply the mac filter */
829 if (vf->adq_enabled) {
830 vf->ch[idx].vsi_idx = vsi->idx;
831 vf->ch[idx].vsi_id = vsi->id;
832 }
833
834 /* Set VF bandwidth if specified */
835 if (vf->tx_rate) {
836 max_tx_rate = vf->tx_rate;
837 } else if (vf->ch[idx].max_tx_rate) {
838 max_tx_rate = vf->ch[idx].max_tx_rate;
839 }
840
841 if (max_tx_rate) {
842 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
843 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
844 max_tx_rate, 0, NULL);
845 if (ret)
846 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
847 vf->vf_id, ret);
848 }
849
850error_alloc_vsi_res:
851 return ret;
852}
853
854/**
855 * i40e_map_pf_queues_to_vsi
856 * @vf: pointer to the VF info
857 *
858 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
859 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
860 **/
861static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
862{
863 struct i40e_pf *pf = vf->pf;
864 struct i40e_hw *hw = &pf->hw;
865 u32 reg, num_tc = 1; /* VF has at least one traffic class */
866 u16 vsi_id, qps;
867 int i, j;
868
869 if (vf->adq_enabled)
870 num_tc = vf->num_tc;
871
872 for (i = 0; i < num_tc; i++) {
873 if (vf->adq_enabled) {
874 qps = vf->ch[i].num_qps;
875 vsi_id = vf->ch[i].vsi_id;
876 } else {
877 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
878 vsi_id = vf->lan_vsi_id;
879 }
880
881 for (j = 0; j < 7; j++) {
882 if (j * 2 >= qps) {
883 /* end of list */
884 reg = 0x07FF07FF;
885 } else {
886 u16 qid = i40e_vc_get_pf_queue_id(vf,
887 vsi_id,
888 j * 2);
889 reg = qid;
890 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
891 (j * 2) + 1);
892 reg |= qid << 16;
893 }
894 i40e_write_rx_ctl(hw,
895 I40E_VSILAN_QTABLE(j, vsi_id),
896 reg);
897 }
898 }
899}
900
901/**
902 * i40e_map_pf_to_vf_queues
903 * @vf: pointer to the VF info
904 *
905 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
906 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
907 **/
908static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
909{
910 struct i40e_pf *pf = vf->pf;
911 struct i40e_hw *hw = &pf->hw;
912 u32 reg, total_qps = 0;
913 u32 qps, num_tc = 1; /* VF has at least one traffic class */
914 u16 vsi_id, qid;
915 int i, j;
916
917 if (vf->adq_enabled)
918 num_tc = vf->num_tc;
919
920 for (i = 0; i < num_tc; i++) {
921 if (vf->adq_enabled) {
922 qps = vf->ch[i].num_qps;
923 vsi_id = vf->ch[i].vsi_id;
924 } else {
925 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
926 vsi_id = vf->lan_vsi_id;
927 }
928
929 for (j = 0; j < qps; j++) {
930 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
931
932 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
933 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
934 reg);
935 total_qps++;
936 }
937 }
938}
939
940/**
941 * i40e_enable_vf_mappings
942 * @vf: pointer to the VF info
943 *
944 * enable VF mappings
945 **/
946static void i40e_enable_vf_mappings(struct i40e_vf *vf)
947{
948 struct i40e_pf *pf = vf->pf;
949 struct i40e_hw *hw = &pf->hw;
950 u32 reg;
951
952 /* Tell the hardware we're using noncontiguous mapping. HW requires
953 * that VF queues be mapped using this method, even when they are
954 * contiguous in real life
955 */
956 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
957 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
958
959 /* enable VF vplan_qtable mappings */
960 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
961 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
962
963 i40e_map_pf_to_vf_queues(vf);
964 i40e_map_pf_queues_to_vsi(vf);
965
966 i40e_flush(hw);
967}
968
969/**
970 * i40e_disable_vf_mappings
971 * @vf: pointer to the VF info
972 *
973 * disable VF mappings
974 **/
975static void i40e_disable_vf_mappings(struct i40e_vf *vf)
976{
977 struct i40e_pf *pf = vf->pf;
978 struct i40e_hw *hw = &pf->hw;
979 int i;
980
981 /* disable qp mappings */
982 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
983 for (i = 0; i < I40E_MAX_VSI_QP; i++)
984 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
985 I40E_QUEUE_END_OF_LIST);
986 i40e_flush(hw);
987}
988
989/**
990 * i40e_free_vf_res
991 * @vf: pointer to the VF info
992 *
993 * free VF resources
994 **/
995static void i40e_free_vf_res(struct i40e_vf *vf)
996{
997 struct i40e_pf *pf = vf->pf;
998 struct i40e_hw *hw = &pf->hw;
999 u32 reg_idx, reg;
1000 int i, j, msix_vf;
1001
1002 /* Start by disabling VF's configuration API to prevent the OS from
1003 * accessing the VF's VSI after it's freed / invalidated.
1004 */
1005 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1006
1007 /* It's possible the VF had requeuested more queues than the default so
1008 * do the accounting here when we're about to free them.
1009 */
1010 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
1011 pf->queues_left += vf->num_queue_pairs -
1012 I40E_DEFAULT_QUEUES_PER_VF;
1013 }
1014
1015 /* free vsi & disconnect it from the parent uplink */
1016 if (vf->lan_vsi_idx) {
1017 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
1018 vf->lan_vsi_idx = 0;
1019 vf->lan_vsi_id = 0;
1020 }
1021
1022 /* do the accounting and remove additional ADq VSI's */
1023 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
1024 for (j = 0; j < vf->num_tc; j++) {
1025 /* At this point VSI0 is already released so don't
1026 * release it again and only clear their values in
1027 * structure variables
1028 */
1029 if (j)
1030 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
1031 vf->ch[j].vsi_idx = 0;
1032 vf->ch[j].vsi_id = 0;
1033 }
1034 }
1035 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
1036
1037 /* disable interrupts so the VF starts in a known state */
1038 for (i = 0; i < msix_vf; i++) {
1039 /* format is same for both registers */
1040 if (0 == i)
1041 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
1042 else
1043 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
1044 (vf->vf_id))
1045 + (i - 1));
1046 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
1047 i40e_flush(hw);
1048 }
1049
1050 /* clear the irq settings */
1051 for (i = 0; i < msix_vf; i++) {
1052 /* format is same for both registers */
1053 if (0 == i)
1054 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
1055 else
1056 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
1057 (vf->vf_id))
1058 + (i - 1));
1059 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1060 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1061 wr32(hw, reg_idx, reg);
1062 i40e_flush(hw);
1063 }
1064 /* reset some of the state variables keeping track of the resources */
1065 vf->num_queue_pairs = 0;
1066 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1067 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1068}
1069
1070/**
1071 * i40e_alloc_vf_res
1072 * @vf: pointer to the VF info
1073 *
1074 * allocate VF resources
1075 **/
1076static int i40e_alloc_vf_res(struct i40e_vf *vf)
1077{
1078 struct i40e_pf *pf = vf->pf;
1079 int total_queue_pairs = 0;
1080 int ret, idx;
1081
1082 if (vf->num_req_queues &&
1083 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1084 pf->num_vf_qps = vf->num_req_queues;
1085 else
1086 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1087
1088 /* allocate hw vsi context & associated resources */
1089 ret = i40e_alloc_vsi_res(vf, 0);
1090 if (ret)
1091 goto error_alloc;
1092 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1093
1094 /* allocate additional VSIs based on tc information for ADq */
1095 if (vf->adq_enabled) {
1096 if (pf->queues_left >=
1097 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1098 /* TC 0 always belongs to VF VSI */
1099 for (idx = 1; idx < vf->num_tc; idx++) {
1100 ret = i40e_alloc_vsi_res(vf, idx);
1101 if (ret)
1102 goto error_alloc;
1103 }
1104 /* send correct number of queues */
1105 total_queue_pairs = I40E_MAX_VF_QUEUES;
1106 } else {
1107 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1108 vf->vf_id);
1109 vf->adq_enabled = false;
1110 }
1111 }
1112
1113 /* We account for each VF to get a default number of queue pairs. If
1114 * the VF has now requested more, we need to account for that to make
1115 * certain we never request more queues than we actually have left in
1116 * HW.
1117 */
1118 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1119 pf->queues_left -=
1120 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1121
1122 if (vf->trusted)
1123 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1124 else
1125 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1126
1127 /* store the total qps number for the runtime
1128 * VF req validation
1129 */
1130 vf->num_queue_pairs = total_queue_pairs;
1131
1132 /* VF is now completely initialized */
1133 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1134
1135error_alloc:
1136 if (ret)
1137 i40e_free_vf_res(vf);
1138
1139 return ret;
1140}
1141
1142#define VF_DEVICE_STATUS 0xAA
1143#define VF_TRANS_PENDING_MASK 0x20
1144/**
1145 * i40e_quiesce_vf_pci
1146 * @vf: pointer to the VF structure
1147 *
1148 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1149 * if the transactions never clear.
1150 **/
1151static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1152{
1153 struct i40e_pf *pf = vf->pf;
1154 struct i40e_hw *hw = &pf->hw;
1155 int vf_abs_id, i;
1156 u32 reg;
1157
1158 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1159
1160 wr32(hw, I40E_PF_PCI_CIAA,
1161 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1162 for (i = 0; i < 100; i++) {
1163 reg = rd32(hw, I40E_PF_PCI_CIAD);
1164 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1165 return 0;
1166 udelay(1);
1167 }
1168 return -EIO;
1169}
1170
1171/**
1172 * __i40e_getnum_vf_vsi_vlan_filters
1173 * @vsi: pointer to the vsi
1174 *
1175 * called to get the number of VLANs offloaded on this VF
1176 **/
1177static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1178{
1179 struct i40e_mac_filter *f;
1180 u16 num_vlans = 0, bkt;
1181
1182 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1183 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1184 num_vlans++;
1185 }
1186
1187 return num_vlans;
1188}
1189
1190/**
1191 * i40e_getnum_vf_vsi_vlan_filters
1192 * @vsi: pointer to the vsi
1193 *
1194 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
1195 **/
1196static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1197{
1198 int num_vlans;
1199
1200 spin_lock_bh(&vsi->mac_filter_hash_lock);
1201 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1202 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1203
1204 return num_vlans;
1205}
1206
1207/**
1208 * i40e_get_vlan_list_sync
1209 * @vsi: pointer to the VSI
1210 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller
1211 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
1212 * This array is allocated here, but has to be freed in caller.
1213 *
1214 * Called to get number of VLANs and VLAN list present in mac_filter_hash.
1215 **/
1216static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
1217 s16 **vlan_list)
1218{
1219 struct i40e_mac_filter *f;
1220 int i = 0;
1221 int bkt;
1222
1223 spin_lock_bh(&vsi->mac_filter_hash_lock);
1224 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1225 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC);
1226 if (!(*vlan_list))
1227 goto err;
1228
1229 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1230 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1231 continue;
1232 (*vlan_list)[i++] = f->vlan;
1233 }
1234err:
1235 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1236}
1237
1238/**
1239 * i40e_set_vsi_promisc
1240 * @vf: pointer to the VF struct
1241 * @seid: VSI number
1242 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
1243 * for a given VLAN
1244 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
1245 * for a given VLAN
1246 * @vl: List of VLANs - apply filter for given VLANs
1247 * @num_vlans: Number of elements in @vl
1248 **/
1249static i40e_status
1250i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
1251 bool unicast_enable, s16 *vl, u16 num_vlans)
1252{
1253 i40e_status aq_ret, aq_tmp = 0;
1254 struct i40e_pf *pf = vf->pf;
1255 struct i40e_hw *hw = &pf->hw;
1256 int i;
1257
1258 /* No VLAN to set promisc on, set on VSI */
1259 if (!num_vlans || !vl) {
1260 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid,
1261 multi_enable,
1262 NULL);
1263 if (aq_ret) {
1264 int aq_err = pf->hw.aq.asq_last_status;
1265
1266 dev_err(&pf->pdev->dev,
1267 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1268 vf->vf_id,
1269 i40e_stat_str(&pf->hw, aq_ret),
1270 i40e_aq_str(&pf->hw, aq_err));
1271
1272 return aq_ret;
1273 }
1274
1275 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid,
1276 unicast_enable,
1277 NULL, true);
1278
1279 if (aq_ret) {
1280 int aq_err = pf->hw.aq.asq_last_status;
1281
1282 dev_err(&pf->pdev->dev,
1283 "VF %d failed to set unicast promiscuous mode err %s aq_err %s\n",
1284 vf->vf_id,
1285 i40e_stat_str(&pf->hw, aq_ret),
1286 i40e_aq_str(&pf->hw, aq_err));
1287 }
1288
1289 return aq_ret;
1290 }
1291
1292 for (i = 0; i < num_vlans; i++) {
1293 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
1294 multi_enable,
1295 vl[i], NULL);
1296 if (aq_ret) {
1297 int aq_err = pf->hw.aq.asq_last_status;
1298
1299 dev_err(&pf->pdev->dev,
1300 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1301 vf->vf_id,
1302 i40e_stat_str(&pf->hw, aq_ret),
1303 i40e_aq_str(&pf->hw, aq_err));
1304
1305 if (!aq_tmp)
1306 aq_tmp = aq_ret;
1307 }
1308
1309 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
1310 unicast_enable,
1311 vl[i], NULL);
1312 if (aq_ret) {
1313 int aq_err = pf->hw.aq.asq_last_status;
1314
1315 dev_err(&pf->pdev->dev,
1316 "VF %d failed to set unicast promiscuous mode err %s aq_err %s\n",
1317 vf->vf_id,
1318 i40e_stat_str(&pf->hw, aq_ret),
1319 i40e_aq_str(&pf->hw, aq_err));
1320
1321 if (!aq_tmp)
1322 aq_tmp = aq_ret;
1323 }
1324 }
1325
1326 if (aq_tmp)
1327 aq_ret = aq_tmp;
1328
1329 return aq_ret;
1330}
1331
1332/**
1333 * i40e_config_vf_promiscuous_mode
1334 * @vf: pointer to the VF info
1335 * @vsi_id: VSI id
1336 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1337 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1338 *
1339 * Called from the VF to configure the promiscuous mode of
1340 * VF vsis and from the VF reset path to reset promiscuous mode.
1341 **/
1342static i40e_status i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1343 u16 vsi_id,
1344 bool allmulti,
1345 bool alluni)
1346{
1347 i40e_status aq_ret = I40E_SUCCESS;
1348 struct i40e_pf *pf = vf->pf;
1349 struct i40e_vsi *vsi;
1350 u16 num_vlans;
1351 s16 *vl;
1352
1353 vsi = i40e_find_vsi_from_id(pf, vsi_id);
1354 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1355 return I40E_ERR_PARAM;
1356
1357 if (vf->port_vlan_id) {
1358 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti,
1359 alluni, &vf->port_vlan_id, 1);
1360 return aq_ret;
1361 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1362 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl);
1363
1364 if (!vl)
1365 return I40E_ERR_NO_MEMORY;
1366
1367 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1368 vl, num_vlans);
1369 kfree(vl);
1370 return aq_ret;
1371 }
1372
1373 /* no VLANs to set on, set on VSI */
1374 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1375 NULL, 0);
1376 return aq_ret;
1377}
1378
1379/**
1380 * i40e_sync_vfr_reset
1381 * @hw: pointer to hw struct
1382 * @vf_id: VF identifier
1383 *
1384 * Before trigger hardware reset, we need to know if no other process has
1385 * reserved the hardware for any reset operations. This check is done by
1386 * examining the status of the RSTAT1 register used to signal the reset.
1387 **/
1388static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1389{
1390 u32 reg;
1391 int i;
1392
1393 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1394 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1395 I40E_VFINT_ICR0_ADMINQ_MASK;
1396 if (reg)
1397 return 0;
1398
1399 usleep_range(100, 200);
1400 }
1401
1402 return -EAGAIN;
1403}
1404
1405/**
1406 * i40e_trigger_vf_reset
1407 * @vf: pointer to the VF structure
1408 * @flr: VFLR was issued or not
1409 *
1410 * Trigger hardware to start a reset for a particular VF. Expects the caller
1411 * to wait the proper amount of time to allow hardware to reset the VF before
1412 * it cleans up and restores VF functionality.
1413 **/
1414static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1415{
1416 struct i40e_pf *pf = vf->pf;
1417 struct i40e_hw *hw = &pf->hw;
1418 u32 reg, reg_idx, bit_idx;
1419 bool vf_active;
1420 u32 radq;
1421
1422 /* warn the VF */
1423 vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1424
1425 /* Disable VF's configuration API during reset. The flag is re-enabled
1426 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1427 * It's normally disabled in i40e_free_vf_res(), but it's safer
1428 * to do it earlier to give some time to finish to any VF config
1429 * functions that may still be running at this point.
1430 */
1431 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1432
1433 /* In the case of a VFLR, the HW has already reset the VF and we
1434 * just need to clean up, so don't hit the VFRTRIG register.
1435 */
1436 if (!flr) {
1437 /* Sync VFR reset before trigger next one */
1438 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1439 I40E_VFINT_ICR0_ADMINQ_MASK;
1440 if (vf_active && !radq)
1441 /* waiting for finish reset by virtual driver */
1442 if (i40e_sync_vfr_reset(hw, vf->vf_id))
1443 dev_info(&pf->pdev->dev,
1444 "Reset VF %d never finished\n",
1445 vf->vf_id);
1446
1447 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1448 * in progress state in rstat1 register.
1449 */
1450 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1451 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1452 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1453 i40e_flush(hw);
1454 }
1455 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1456 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1457 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1458 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1459 i40e_flush(hw);
1460
1461 if (i40e_quiesce_vf_pci(vf))
1462 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1463 vf->vf_id);
1464}
1465
1466/**
1467 * i40e_cleanup_reset_vf
1468 * @vf: pointer to the VF structure
1469 *
1470 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1471 * have verified whether the reset is finished properly, and ensure the
1472 * minimum amount of wait time has passed.
1473 **/
1474static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1475{
1476 struct i40e_pf *pf = vf->pf;
1477 struct i40e_hw *hw = &pf->hw;
1478 u32 reg;
1479
1480 /* disable promisc modes in case they were enabled */
1481 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1482
1483 /* free VF resources to begin resetting the VSI state */
1484 i40e_free_vf_res(vf);
1485
1486 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1487 * By doing this we allow HW to access VF memory at any point. If we
1488 * did it any sooner, HW could access memory while it was being freed
1489 * in i40e_free_vf_res(), causing an IOMMU fault.
1490 *
1491 * On the other hand, this needs to be done ASAP, because the VF driver
1492 * is waiting for this to happen and may report a timeout. It's
1493 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1494 * it.
1495 */
1496 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1497 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1498 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1499
1500 /* reallocate VF resources to finish resetting the VSI state */
1501 if (!i40e_alloc_vf_res(vf)) {
1502 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1503 i40e_enable_vf_mappings(vf);
1504 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1505 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1506 /* Do not notify the client during VF init */
1507 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1508 &vf->vf_states))
1509 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1510 vf->num_vlan = 0;
1511 }
1512
1513 /* Tell the VF driver the reset is done. This needs to be done only
1514 * after VF has been fully initialized, because the VF driver may
1515 * request resources immediately after setting this flag.
1516 */
1517 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1518}
1519
1520/**
1521 * i40e_reset_vf
1522 * @vf: pointer to the VF structure
1523 * @flr: VFLR was issued or not
1524 *
1525 * Returns true if the VF is in reset, resets successfully, or resets
1526 * are disabled and false otherwise.
1527 **/
1528bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1529{
1530 struct i40e_pf *pf = vf->pf;
1531 struct i40e_hw *hw = &pf->hw;
1532 bool rsd = false;
1533 u32 reg;
1534 int i;
1535
1536 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1537 return true;
1538
1539 /* Bail out if VFs are disabled. */
1540 if (test_bit(__I40E_VF_DISABLE, pf->state))
1541 return true;
1542
1543 /* If VF is being reset already we don't need to continue. */
1544 if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1545 return true;
1546
1547 i40e_trigger_vf_reset(vf, flr);
1548
1549 /* poll VPGEN_VFRSTAT reg to make sure
1550 * that reset is complete
1551 */
1552 for (i = 0; i < 10; i++) {
1553 /* VF reset requires driver to first reset the VF and then
1554 * poll the status register to make sure that the reset
1555 * completed successfully. Due to internal HW FIFO flushes,
1556 * we must wait 10ms before the register will be valid.
1557 */
1558 usleep_range(10000, 20000);
1559 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1560 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1561 rsd = true;
1562 break;
1563 }
1564 }
1565
1566 if (flr)
1567 usleep_range(10000, 20000);
1568
1569 if (!rsd)
1570 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1571 vf->vf_id);
1572 usleep_range(10000, 20000);
1573
1574 /* On initial reset, we don't have any queues to disable */
1575 if (vf->lan_vsi_idx != 0)
1576 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1577
1578 i40e_cleanup_reset_vf(vf);
1579
1580 i40e_flush(hw);
1581 usleep_range(20000, 40000);
1582 clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states);
1583
1584 return true;
1585}
1586
1587/**
1588 * i40e_reset_all_vfs
1589 * @pf: pointer to the PF structure
1590 * @flr: VFLR was issued or not
1591 *
1592 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1593 * VF, then do all the waiting in one chunk, and finally finish restoring each
1594 * VF after the wait. This is useful during PF routines which need to reset
1595 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1596 *
1597 * Returns true if any VFs were reset, and false otherwise.
1598 **/
1599bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1600{
1601 struct i40e_hw *hw = &pf->hw;
1602 struct i40e_vf *vf;
1603 int i, v;
1604 u32 reg;
1605
1606 /* If we don't have any VFs, then there is nothing to reset */
1607 if (!pf->num_alloc_vfs)
1608 return false;
1609
1610 /* If VFs have been disabled, there is no need to reset */
1611 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1612 return false;
1613
1614 /* Begin reset on all VFs at once */
1615 for (v = 0; v < pf->num_alloc_vfs; v++) {
1616 vf = &pf->vf[v];
1617 /* If VF is being reset no need to trigger reset again */
1618 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1619 i40e_trigger_vf_reset(&pf->vf[v], flr);
1620 }
1621
1622 /* HW requires some time to make sure it can flush the FIFO for a VF
1623 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1624 * sequence to make sure that it has completed. We'll keep track of
1625 * the VFs using a simple iterator that increments once that VF has
1626 * finished resetting.
1627 */
1628 for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
1629 usleep_range(10000, 20000);
1630
1631 /* Check each VF in sequence, beginning with the VF to fail
1632 * the previous check.
1633 */
1634 while (v < pf->num_alloc_vfs) {
1635 vf = &pf->vf[v];
1636 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
1637 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1638 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1639 break;
1640 }
1641
1642 /* If the current VF has finished resetting, move on
1643 * to the next VF in sequence.
1644 */
1645 v++;
1646 }
1647 }
1648
1649 if (flr)
1650 usleep_range(10000, 20000);
1651
1652 /* Display a warning if at least one VF didn't manage to reset in
1653 * time, but continue on with the operation.
1654 */
1655 if (v < pf->num_alloc_vfs)
1656 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1657 pf->vf[v].vf_id);
1658 usleep_range(10000, 20000);
1659
1660 /* Begin disabling all the rings associated with VFs, but do not wait
1661 * between each VF.
1662 */
1663 for (v = 0; v < pf->num_alloc_vfs; v++) {
1664 /* On initial reset, we don't have any queues to disable */
1665 if (pf->vf[v].lan_vsi_idx == 0)
1666 continue;
1667
1668 /* If VF is reset in another thread just continue */
1669 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1670 continue;
1671
1672 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[v].lan_vsi_idx]);
1673 }
1674
1675 /* Now that we've notified HW to disable all of the VF rings, wait
1676 * until they finish.
1677 */
1678 for (v = 0; v < pf->num_alloc_vfs; v++) {
1679 /* On initial reset, we don't have any queues to disable */
1680 if (pf->vf[v].lan_vsi_idx == 0)
1681 continue;
1682
1683 /* If VF is reset in another thread just continue */
1684 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1685 continue;
1686
1687 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[v].lan_vsi_idx]);
1688 }
1689
1690 /* Hw may need up to 50ms to finish disabling the RX queues. We
1691 * minimize the wait by delaying only once for all VFs.
1692 */
1693 mdelay(50);
1694
1695 /* Finish the reset on each VF */
1696 for (v = 0; v < pf->num_alloc_vfs; v++) {
1697 /* If VF is reset in another thread just continue */
1698 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1699 continue;
1700
1701 i40e_cleanup_reset_vf(&pf->vf[v]);
1702 }
1703
1704 i40e_flush(hw);
1705 usleep_range(20000, 40000);
1706 clear_bit(__I40E_VF_DISABLE, pf->state);
1707
1708 return true;
1709}
1710
1711/**
1712 * i40e_free_vfs
1713 * @pf: pointer to the PF structure
1714 *
1715 * free VF resources
1716 **/
1717void i40e_free_vfs(struct i40e_pf *pf)
1718{
1719 struct i40e_hw *hw = &pf->hw;
1720 u32 reg_idx, bit_idx;
1721 int i, tmp, vf_id;
1722
1723 if (!pf->vf)
1724 return;
1725
1726 set_bit(__I40E_VFS_RELEASING, pf->state);
1727 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1728 usleep_range(1000, 2000);
1729
1730 i40e_notify_client_of_vf_enable(pf, 0);
1731
1732 /* Disable IOV before freeing resources. This lets any VF drivers
1733 * running in the host get themselves cleaned up before we yank
1734 * the carpet out from underneath their feet.
1735 */
1736 if (!pci_vfs_assigned(pf->pdev))
1737 pci_disable_sriov(pf->pdev);
1738 else
1739 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1740
1741 /* Amortize wait time by stopping all VFs at the same time */
1742 for (i = 0; i < pf->num_alloc_vfs; i++) {
1743 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1744 continue;
1745
1746 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1747 }
1748
1749 for (i = 0; i < pf->num_alloc_vfs; i++) {
1750 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1751 continue;
1752
1753 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1754 }
1755
1756 /* free up VF resources */
1757 tmp = pf->num_alloc_vfs;
1758 pf->num_alloc_vfs = 0;
1759 for (i = 0; i < tmp; i++) {
1760 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1761 i40e_free_vf_res(&pf->vf[i]);
1762 /* disable qp mappings */
1763 i40e_disable_vf_mappings(&pf->vf[i]);
1764 }
1765
1766 kfree(pf->vf);
1767 pf->vf = NULL;
1768
1769 /* This check is for when the driver is unloaded while VFs are
1770 * assigned. Setting the number of VFs to 0 through sysfs is caught
1771 * before this function ever gets called.
1772 */
1773 if (!pci_vfs_assigned(pf->pdev)) {
1774 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1775 * work correctly when SR-IOV gets re-enabled.
1776 */
1777 for (vf_id = 0; vf_id < tmp; vf_id++) {
1778 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1779 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1780 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1781 }
1782 }
1783 clear_bit(__I40E_VF_DISABLE, pf->state);
1784 clear_bit(__I40E_VFS_RELEASING, pf->state);
1785}
1786
1787#ifdef CONFIG_PCI_IOV
1788/**
1789 * i40e_alloc_vfs
1790 * @pf: pointer to the PF structure
1791 * @num_alloc_vfs: number of VFs to allocate
1792 *
1793 * allocate VF resources
1794 **/
1795int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1796{
1797 struct i40e_vf *vfs;
1798 int i, ret = 0;
1799
1800 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1801 i40e_irq_dynamic_disable_icr0(pf);
1802
1803 /* Check to see if we're just allocating resources for extant VFs */
1804 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1805 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1806 if (ret) {
1807 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1808 pf->num_alloc_vfs = 0;
1809 goto err_iov;
1810 }
1811 }
1812 /* allocate memory */
1813 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1814 if (!vfs) {
1815 ret = -ENOMEM;
1816 goto err_alloc;
1817 }
1818 pf->vf = vfs;
1819
1820 /* apply default profile */
1821 for (i = 0; i < num_alloc_vfs; i++) {
1822 vfs[i].pf = pf;
1823 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1824 vfs[i].vf_id = i;
1825
1826 /* assign default capabilities */
1827 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1828 vfs[i].spoofchk = true;
1829
1830 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1831
1832 }
1833 pf->num_alloc_vfs = num_alloc_vfs;
1834
1835 /* VF resources get allocated during reset */
1836 i40e_reset_all_vfs(pf, false);
1837
1838 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1839
1840err_alloc:
1841 if (ret)
1842 i40e_free_vfs(pf);
1843err_iov:
1844 /* Re-enable interrupt 0. */
1845 i40e_irq_dynamic_enable_icr0(pf);
1846 return ret;
1847}
1848
1849#endif
1850/**
1851 * i40e_pci_sriov_enable
1852 * @pdev: pointer to a pci_dev structure
1853 * @num_vfs: number of VFs to allocate
1854 *
1855 * Enable or change the number of VFs
1856 **/
1857static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1858{
1859#ifdef CONFIG_PCI_IOV
1860 struct i40e_pf *pf = pci_get_drvdata(pdev);
1861 int pre_existing_vfs = pci_num_vf(pdev);
1862 int err = 0;
1863
1864 if (test_bit(__I40E_TESTING, pf->state)) {
1865 dev_warn(&pdev->dev,
1866 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1867 err = -EPERM;
1868 goto err_out;
1869 }
1870
1871 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1872 i40e_free_vfs(pf);
1873 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1874 goto out;
1875
1876 if (num_vfs > pf->num_req_vfs) {
1877 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1878 num_vfs, pf->num_req_vfs);
1879 err = -EPERM;
1880 goto err_out;
1881 }
1882
1883 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1884 err = i40e_alloc_vfs(pf, num_vfs);
1885 if (err) {
1886 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1887 goto err_out;
1888 }
1889
1890out:
1891 return num_vfs;
1892
1893err_out:
1894 return err;
1895#endif
1896 return 0;
1897}
1898
1899/**
1900 * i40e_pci_sriov_configure
1901 * @pdev: pointer to a pci_dev structure
1902 * @num_vfs: number of VFs to allocate
1903 *
1904 * Enable or change the number of VFs. Called when the user updates the number
1905 * of VFs in sysfs.
1906 **/
1907int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1908{
1909 struct i40e_pf *pf = pci_get_drvdata(pdev);
1910 int ret = 0;
1911
1912 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1913 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1914 return -EAGAIN;
1915 }
1916
1917 if (num_vfs) {
1918 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1919 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1920 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1921 }
1922 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1923 goto sriov_configure_out;
1924 }
1925
1926 if (!pci_vfs_assigned(pf->pdev)) {
1927 i40e_free_vfs(pf);
1928 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1929 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1930 } else {
1931 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1932 ret = -EINVAL;
1933 goto sriov_configure_out;
1934 }
1935sriov_configure_out:
1936 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1937 return ret;
1938}
1939
1940/***********************virtual channel routines******************/
1941
1942/**
1943 * i40e_vc_send_msg_to_vf
1944 * @vf: pointer to the VF info
1945 * @v_opcode: virtual channel opcode
1946 * @v_retval: virtual channel return value
1947 * @msg: pointer to the msg buffer
1948 * @msglen: msg length
1949 *
1950 * send msg to VF
1951 **/
1952static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1953 u32 v_retval, u8 *msg, u16 msglen)
1954{
1955 struct i40e_pf *pf;
1956 struct i40e_hw *hw;
1957 int abs_vf_id;
1958 i40e_status aq_ret;
1959
1960 /* validate the request */
1961 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1962 return -EINVAL;
1963
1964 pf = vf->pf;
1965 hw = &pf->hw;
1966 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1967
1968 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1969 msg, msglen, NULL);
1970 if (aq_ret) {
1971 dev_info(&pf->pdev->dev,
1972 "Unable to send the message to VF %d aq_err %d\n",
1973 vf->vf_id, pf->hw.aq.asq_last_status);
1974 return -EIO;
1975 }
1976
1977 return 0;
1978}
1979
1980/**
1981 * i40e_vc_send_resp_to_vf
1982 * @vf: pointer to the VF info
1983 * @opcode: operation code
1984 * @retval: return value
1985 *
1986 * send resp msg to VF
1987 **/
1988static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1989 enum virtchnl_ops opcode,
1990 i40e_status retval)
1991{
1992 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1993}
1994
1995/**
1996 * i40e_sync_vf_state
1997 * @vf: pointer to the VF info
1998 * @state: VF state
1999 *
2000 * Called from a VF message to synchronize the service with a potential
2001 * VF reset state
2002 **/
2003static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
2004{
2005 int i;
2006
2007 /* When handling some messages, it needs VF state to be set.
2008 * It is possible that this flag is cleared during VF reset,
2009 * so there is a need to wait until the end of the reset to
2010 * handle the request message correctly.
2011 */
2012 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
2013 if (test_bit(state, &vf->vf_states))
2014 return true;
2015 usleep_range(10000, 20000);
2016 }
2017
2018 return test_bit(state, &vf->vf_states);
2019}
2020
2021/**
2022 * i40e_vc_get_version_msg
2023 * @vf: pointer to the VF info
2024 * @msg: pointer to the msg buffer
2025 *
2026 * called from the VF to request the API version used by the PF
2027 **/
2028static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
2029{
2030 struct virtchnl_version_info info = {
2031 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
2032 };
2033
2034 vf->vf_ver = *(struct virtchnl_version_info *)msg;
2035 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
2036 if (VF_IS_V10(&vf->vf_ver))
2037 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
2038 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
2039 I40E_SUCCESS, (u8 *)&info,
2040 sizeof(struct virtchnl_version_info));
2041}
2042
2043/**
2044 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
2045 * @vf: pointer to VF structure
2046 **/
2047static void i40e_del_qch(struct i40e_vf *vf)
2048{
2049 struct i40e_pf *pf = vf->pf;
2050 int i;
2051
2052 /* first element in the array belongs to primary VF VSI and we shouldn't
2053 * delete it. We should however delete the rest of the VSIs created
2054 */
2055 for (i = 1; i < vf->num_tc; i++) {
2056 if (vf->ch[i].vsi_idx) {
2057 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
2058 vf->ch[i].vsi_idx = 0;
2059 vf->ch[i].vsi_id = 0;
2060 }
2061 }
2062}
2063
2064/**
2065 * i40e_vc_get_max_frame_size
2066 * @vf: pointer to the VF
2067 *
2068 * Max frame size is determined based on the current port's max frame size and
2069 * whether a port VLAN is configured on this VF. The VF is not aware whether
2070 * it's in a port VLAN so the PF needs to account for this in max frame size
2071 * checks and sending the max frame size to the VF.
2072 **/
2073static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2074{
2075 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2076
2077 if (vf->port_vlan_id)
2078 max_frame_size -= VLAN_HLEN;
2079
2080 return max_frame_size;
2081}
2082
2083/**
2084 * i40e_vc_get_vf_resources_msg
2085 * @vf: pointer to the VF info
2086 * @msg: pointer to the msg buffer
2087 *
2088 * called from the VF to request its resources
2089 **/
2090static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2091{
2092 struct virtchnl_vf_resource *vfres = NULL;
2093 struct i40e_pf *pf = vf->pf;
2094 i40e_status aq_ret = 0;
2095 struct i40e_vsi *vsi;
2096 int num_vsis = 1;
2097 size_t len = 0;
2098 int ret;
2099
2100 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
2101 aq_ret = I40E_ERR_PARAM;
2102 goto err;
2103 }
2104
2105 len = struct_size(vfres, vsi_res, num_vsis);
2106 vfres = kzalloc(len, GFP_KERNEL);
2107 if (!vfres) {
2108 aq_ret = I40E_ERR_NO_MEMORY;
2109 len = 0;
2110 goto err;
2111 }
2112 if (VF_IS_V11(&vf->vf_ver))
2113 vf->driver_caps = *(u32 *)msg;
2114 else
2115 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2116 VIRTCHNL_VF_OFFLOAD_RSS_REG |
2117 VIRTCHNL_VF_OFFLOAD_VLAN;
2118
2119 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2120 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
2121 vsi = pf->vsi[vf->lan_vsi_idx];
2122 if (!vsi->info.pvid)
2123 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2124
2125 if (i40e_vf_client_capable(pf, vf->vf_id) &&
2126 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_IWARP)) {
2127 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_IWARP;
2128 set_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
2129 } else {
2130 clear_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
2131 }
2132
2133 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2134 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2135 } else {
2136 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
2137 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2138 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2139 else
2140 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2141 }
2142
2143 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
2144 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2145 vfres->vf_cap_flags |=
2146 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2147 }
2148
2149 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2150 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2151
2152 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
2153 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2154 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2155
2156 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2157 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
2158 dev_err(&pf->pdev->dev,
2159 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2160 vf->vf_id);
2161 aq_ret = I40E_ERR_PARAM;
2162 goto err;
2163 }
2164 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2165 }
2166
2167 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
2168 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2169 vfres->vf_cap_flags |=
2170 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2171 }
2172
2173 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2174 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2175
2176 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2177 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2178
2179 vfres->num_vsis = num_vsis;
2180 vfres->num_queue_pairs = vf->num_queue_pairs;
2181 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2182 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2183 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2184 vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2185
2186 if (vf->lan_vsi_idx) {
2187 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2188 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2189 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2190 /* VFs only use TC 0 */
2191 vfres->vsi_res[0].qset_handle
2192 = le16_to_cpu(vsi->info.qs_handle[0]);
2193 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) {
2194 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
2195 eth_zero_addr(vf->default_lan_addr.addr);
2196 }
2197 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2198 vf->default_lan_addr.addr);
2199 }
2200 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2201
2202err:
2203 /* send the response back to the VF */
2204 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2205 aq_ret, (u8 *)vfres, len);
2206
2207 kfree(vfres);
2208 return ret;
2209}
2210
2211/**
2212 * i40e_vc_config_promiscuous_mode_msg
2213 * @vf: pointer to the VF info
2214 * @msg: pointer to the msg buffer
2215 *
2216 * called from the VF to configure the promiscuous mode of
2217 * VF vsis
2218 **/
2219static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2220{
2221 struct virtchnl_promisc_info *info =
2222 (struct virtchnl_promisc_info *)msg;
2223 struct i40e_pf *pf = vf->pf;
2224 i40e_status aq_ret = 0;
2225 bool allmulti = false;
2226 bool alluni = false;
2227
2228 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2229 aq_ret = I40E_ERR_PARAM;
2230 goto err_out;
2231 }
2232 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2233 dev_err(&pf->pdev->dev,
2234 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2235 vf->vf_id);
2236
2237 /* Lie to the VF on purpose, because this is an error we can
2238 * ignore. Unprivileged VF is not a virtual channel error.
2239 */
2240 aq_ret = 0;
2241 goto err_out;
2242 }
2243
2244 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2245 aq_ret = I40E_ERR_PARAM;
2246 goto err_out;
2247 }
2248
2249 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2250 aq_ret = I40E_ERR_PARAM;
2251 goto err_out;
2252 }
2253
2254 /* Multicast promiscuous handling*/
2255 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2256 allmulti = true;
2257
2258 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2259 alluni = true;
2260 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2261 alluni);
2262 if (aq_ret)
2263 goto err_out;
2264
2265 if (allmulti) {
2266 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2267 &vf->vf_states))
2268 dev_info(&pf->pdev->dev,
2269 "VF %d successfully set multicast promiscuous mode\n",
2270 vf->vf_id);
2271 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2272 &vf->vf_states))
2273 dev_info(&pf->pdev->dev,
2274 "VF %d successfully unset multicast promiscuous mode\n",
2275 vf->vf_id);
2276
2277 if (alluni) {
2278 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2279 &vf->vf_states))
2280 dev_info(&pf->pdev->dev,
2281 "VF %d successfully set unicast promiscuous mode\n",
2282 vf->vf_id);
2283 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2284 &vf->vf_states))
2285 dev_info(&pf->pdev->dev,
2286 "VF %d successfully unset unicast promiscuous mode\n",
2287 vf->vf_id);
2288
2289err_out:
2290 /* send the response to the VF */
2291 return i40e_vc_send_resp_to_vf(vf,
2292 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2293 aq_ret);
2294}
2295
2296/**
2297 * i40e_vc_config_queues_msg
2298 * @vf: pointer to the VF info
2299 * @msg: pointer to the msg buffer
2300 *
2301 * called from the VF to configure the rx/tx
2302 * queues
2303 **/
2304static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2305{
2306 struct virtchnl_vsi_queue_config_info *qci =
2307 (struct virtchnl_vsi_queue_config_info *)msg;
2308 struct virtchnl_queue_pair_info *qpi;
2309 u16 vsi_id, vsi_queue_id = 0;
2310 struct i40e_pf *pf = vf->pf;
2311 i40e_status aq_ret = 0;
2312 int i, j = 0, idx = 0;
2313 struct i40e_vsi *vsi;
2314 u16 num_qps_all = 0;
2315
2316 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2317 aq_ret = I40E_ERR_PARAM;
2318 goto error_param;
2319 }
2320
2321 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2322 aq_ret = I40E_ERR_PARAM;
2323 goto error_param;
2324 }
2325
2326 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2327 aq_ret = I40E_ERR_PARAM;
2328 goto error_param;
2329 }
2330
2331 if (vf->adq_enabled) {
2332 for (i = 0; i < vf->num_tc; i++)
2333 num_qps_all += vf->ch[i].num_qps;
2334 if (num_qps_all != qci->num_queue_pairs) {
2335 aq_ret = I40E_ERR_PARAM;
2336 goto error_param;
2337 }
2338 }
2339
2340 vsi_id = qci->vsi_id;
2341
2342 for (i = 0; i < qci->num_queue_pairs; i++) {
2343 qpi = &qci->qpair[i];
2344
2345 if (!vf->adq_enabled) {
2346 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2347 qpi->txq.queue_id)) {
2348 aq_ret = I40E_ERR_PARAM;
2349 goto error_param;
2350 }
2351
2352 vsi_queue_id = qpi->txq.queue_id;
2353
2354 if (qpi->txq.vsi_id != qci->vsi_id ||
2355 qpi->rxq.vsi_id != qci->vsi_id ||
2356 qpi->rxq.queue_id != vsi_queue_id) {
2357 aq_ret = I40E_ERR_PARAM;
2358 goto error_param;
2359 }
2360 }
2361
2362 if (vf->adq_enabled) {
2363 if (idx >= ARRAY_SIZE(vf->ch)) {
2364 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2365 goto error_param;
2366 }
2367 vsi_id = vf->ch[idx].vsi_id;
2368 }
2369
2370 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2371 &qpi->rxq) ||
2372 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2373 &qpi->txq)) {
2374 aq_ret = I40E_ERR_PARAM;
2375 goto error_param;
2376 }
2377
2378 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2379 * VF does not know about these additional VSIs and all
2380 * it cares is about its own queues. PF configures these queues
2381 * to its appropriate VSIs based on TC mapping
2382 */
2383 if (vf->adq_enabled) {
2384 if (idx >= ARRAY_SIZE(vf->ch)) {
2385 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2386 goto error_param;
2387 }
2388 if (j == (vf->ch[idx].num_qps - 1)) {
2389 idx++;
2390 j = 0; /* resetting the queue count */
2391 vsi_queue_id = 0;
2392 } else {
2393 j++;
2394 vsi_queue_id++;
2395 }
2396 }
2397 }
2398 /* set vsi num_queue_pairs in use to num configured by VF */
2399 if (!vf->adq_enabled) {
2400 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2401 qci->num_queue_pairs;
2402 } else {
2403 for (i = 0; i < vf->num_tc; i++) {
2404 vsi = pf->vsi[vf->ch[i].vsi_idx];
2405 vsi->num_queue_pairs = vf->ch[i].num_qps;
2406
2407 if (i40e_update_adq_vsi_queues(vsi, i)) {
2408 aq_ret = I40E_ERR_CONFIG;
2409 goto error_param;
2410 }
2411 }
2412 }
2413
2414error_param:
2415 /* send the response to the VF */
2416 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2417 aq_ret);
2418}
2419
2420/**
2421 * i40e_validate_queue_map - check queue map is valid
2422 * @vf: the VF structure pointer
2423 * @vsi_id: vsi id
2424 * @queuemap: Tx or Rx queue map
2425 *
2426 * check if Tx or Rx queue map is valid
2427 **/
2428static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2429 unsigned long queuemap)
2430{
2431 u16 vsi_queue_id, queue_id;
2432
2433 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2434 if (vf->adq_enabled) {
2435 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2436 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2437 } else {
2438 queue_id = vsi_queue_id;
2439 }
2440
2441 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2442 return -EINVAL;
2443 }
2444
2445 return 0;
2446}
2447
2448/**
2449 * i40e_vc_config_irq_map_msg
2450 * @vf: pointer to the VF info
2451 * @msg: pointer to the msg buffer
2452 *
2453 * called from the VF to configure the irq to
2454 * queue map
2455 **/
2456static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2457{
2458 struct virtchnl_irq_map_info *irqmap_info =
2459 (struct virtchnl_irq_map_info *)msg;
2460 struct virtchnl_vector_map *map;
2461 u16 vsi_id;
2462 i40e_status aq_ret = 0;
2463 int i;
2464
2465 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2466 aq_ret = I40E_ERR_PARAM;
2467 goto error_param;
2468 }
2469
2470 if (irqmap_info->num_vectors >
2471 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2472 aq_ret = I40E_ERR_PARAM;
2473 goto error_param;
2474 }
2475
2476 for (i = 0; i < irqmap_info->num_vectors; i++) {
2477 map = &irqmap_info->vecmap[i];
2478 /* validate msg params */
2479 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2480 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2481 aq_ret = I40E_ERR_PARAM;
2482 goto error_param;
2483 }
2484 vsi_id = map->vsi_id;
2485
2486 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2487 aq_ret = I40E_ERR_PARAM;
2488 goto error_param;
2489 }
2490
2491 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2492 aq_ret = I40E_ERR_PARAM;
2493 goto error_param;
2494 }
2495
2496 i40e_config_irq_link_list(vf, vsi_id, map);
2497 }
2498error_param:
2499 /* send the response to the VF */
2500 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2501 aq_ret);
2502}
2503
2504/**
2505 * i40e_ctrl_vf_tx_rings
2506 * @vsi: the SRIOV VSI being configured
2507 * @q_map: bit map of the queues to be enabled
2508 * @enable: start or stop the queue
2509 **/
2510static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2511 bool enable)
2512{
2513 struct i40e_pf *pf = vsi->back;
2514 int ret = 0;
2515 u16 q_id;
2516
2517 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2518 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2519 vsi->base_queue + q_id,
2520 false /*is xdp*/, enable);
2521 if (ret)
2522 break;
2523 }
2524 return ret;
2525}
2526
2527/**
2528 * i40e_ctrl_vf_rx_rings
2529 * @vsi: the SRIOV VSI being configured
2530 * @q_map: bit map of the queues to be enabled
2531 * @enable: start or stop the queue
2532 **/
2533static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2534 bool enable)
2535{
2536 struct i40e_pf *pf = vsi->back;
2537 int ret = 0;
2538 u16 q_id;
2539
2540 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2541 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2542 enable);
2543 if (ret)
2544 break;
2545 }
2546 return ret;
2547}
2548
2549/**
2550 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2551 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2552 *
2553 * Returns true if validation was successful, else false.
2554 */
2555static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2556{
2557 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2558 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2559 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2560 return false;
2561
2562 return true;
2563}
2564
2565/**
2566 * i40e_vc_enable_queues_msg
2567 * @vf: pointer to the VF info
2568 * @msg: pointer to the msg buffer
2569 *
2570 * called from the VF to enable all or specific queue(s)
2571 **/
2572static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2573{
2574 struct virtchnl_queue_select *vqs =
2575 (struct virtchnl_queue_select *)msg;
2576 struct i40e_pf *pf = vf->pf;
2577 i40e_status aq_ret = 0;
2578 int i;
2579
2580 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2581 aq_ret = I40E_ERR_PARAM;
2582 goto error_param;
2583 }
2584
2585 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2586 aq_ret = I40E_ERR_PARAM;
2587 goto error_param;
2588 }
2589
2590 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2591 aq_ret = I40E_ERR_PARAM;
2592 goto error_param;
2593 }
2594
2595 /* Use the queue bit map sent by the VF */
2596 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2597 true)) {
2598 aq_ret = I40E_ERR_TIMEOUT;
2599 goto error_param;
2600 }
2601 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2602 true)) {
2603 aq_ret = I40E_ERR_TIMEOUT;
2604 goto error_param;
2605 }
2606
2607 /* need to start the rings for additional ADq VSI's as well */
2608 if (vf->adq_enabled) {
2609 /* zero belongs to LAN VSI */
2610 for (i = 1; i < vf->num_tc; i++) {
2611 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2612 aq_ret = I40E_ERR_TIMEOUT;
2613 }
2614 }
2615
2616error_param:
2617 /* send the response to the VF */
2618 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2619 aq_ret);
2620}
2621
2622/**
2623 * i40e_vc_disable_queues_msg
2624 * @vf: pointer to the VF info
2625 * @msg: pointer to the msg buffer
2626 *
2627 * called from the VF to disable all or specific
2628 * queue(s)
2629 **/
2630static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2631{
2632 struct virtchnl_queue_select *vqs =
2633 (struct virtchnl_queue_select *)msg;
2634 struct i40e_pf *pf = vf->pf;
2635 i40e_status aq_ret = 0;
2636
2637 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2638 aq_ret = I40E_ERR_PARAM;
2639 goto error_param;
2640 }
2641
2642 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2643 aq_ret = I40E_ERR_PARAM;
2644 goto error_param;
2645 }
2646
2647 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2648 aq_ret = I40E_ERR_PARAM;
2649 goto error_param;
2650 }
2651
2652 /* Use the queue bit map sent by the VF */
2653 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2654 false)) {
2655 aq_ret = I40E_ERR_TIMEOUT;
2656 goto error_param;
2657 }
2658 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2659 false)) {
2660 aq_ret = I40E_ERR_TIMEOUT;
2661 goto error_param;
2662 }
2663error_param:
2664 /* send the response to the VF */
2665 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2666 aq_ret);
2667}
2668
2669/**
2670 * i40e_check_enough_queue - find big enough queue number
2671 * @vf: pointer to the VF info
2672 * @needed: the number of items needed
2673 *
2674 * Returns the base item index of the queue, or negative for error
2675 **/
2676static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2677{
2678 unsigned int i, cur_queues, more, pool_size;
2679 struct i40e_lump_tracking *pile;
2680 struct i40e_pf *pf = vf->pf;
2681 struct i40e_vsi *vsi;
2682
2683 vsi = pf->vsi[vf->lan_vsi_idx];
2684 cur_queues = vsi->alloc_queue_pairs;
2685
2686 /* if current allocated queues are enough for need */
2687 if (cur_queues >= needed)
2688 return vsi->base_queue;
2689
2690 pile = pf->qp_pile;
2691 if (cur_queues > 0) {
2692 /* if the allocated queues are not zero
2693 * just check if there are enough queues for more
2694 * behind the allocated queues.
2695 */
2696 more = needed - cur_queues;
2697 for (i = vsi->base_queue + cur_queues;
2698 i < pile->num_entries; i++) {
2699 if (pile->list[i] & I40E_PILE_VALID_BIT)
2700 break;
2701
2702 if (more-- == 1)
2703 /* there is enough */
2704 return vsi->base_queue;
2705 }
2706 }
2707
2708 pool_size = 0;
2709 for (i = 0; i < pile->num_entries; i++) {
2710 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2711 pool_size = 0;
2712 continue;
2713 }
2714 if (needed <= ++pool_size)
2715 /* there is enough */
2716 return i;
2717 }
2718
2719 return -ENOMEM;
2720}
2721
2722/**
2723 * i40e_vc_request_queues_msg
2724 * @vf: pointer to the VF info
2725 * @msg: pointer to the msg buffer
2726 *
2727 * VFs get a default number of queues but can use this message to request a
2728 * different number. If the request is successful, PF will reset the VF and
2729 * return 0. If unsuccessful, PF will send message informing VF of number of
2730 * available queues and return result of sending VF a message.
2731 **/
2732static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2733{
2734 struct virtchnl_vf_res_request *vfres =
2735 (struct virtchnl_vf_res_request *)msg;
2736 u16 req_pairs = vfres->num_queue_pairs;
2737 u8 cur_pairs = vf->num_queue_pairs;
2738 struct i40e_pf *pf = vf->pf;
2739
2740 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2741 return -EINVAL;
2742
2743 if (req_pairs > I40E_MAX_VF_QUEUES) {
2744 dev_err(&pf->pdev->dev,
2745 "VF %d tried to request more than %d queues.\n",
2746 vf->vf_id,
2747 I40E_MAX_VF_QUEUES);
2748 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2749 } else if (req_pairs - cur_pairs > pf->queues_left) {
2750 dev_warn(&pf->pdev->dev,
2751 "VF %d requested %d more queues, but only %d left.\n",
2752 vf->vf_id,
2753 req_pairs - cur_pairs,
2754 pf->queues_left);
2755 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2756 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2757 dev_warn(&pf->pdev->dev,
2758 "VF %d requested %d more queues, but there is not enough for it.\n",
2759 vf->vf_id,
2760 req_pairs - cur_pairs);
2761 vfres->num_queue_pairs = cur_pairs;
2762 } else {
2763 /* successful request */
2764 vf->num_req_queues = req_pairs;
2765 i40e_vc_reset_vf(vf, true);
2766 return 0;
2767 }
2768
2769 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2770 (u8 *)vfres, sizeof(*vfres));
2771}
2772
2773/**
2774 * i40e_vc_get_stats_msg
2775 * @vf: pointer to the VF info
2776 * @msg: pointer to the msg buffer
2777 *
2778 * called from the VF to get vsi stats
2779 **/
2780static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2781{
2782 struct virtchnl_queue_select *vqs =
2783 (struct virtchnl_queue_select *)msg;
2784 struct i40e_pf *pf = vf->pf;
2785 struct i40e_eth_stats stats;
2786 i40e_status aq_ret = 0;
2787 struct i40e_vsi *vsi;
2788
2789 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2790
2791 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2792 aq_ret = I40E_ERR_PARAM;
2793 goto error_param;
2794 }
2795
2796 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2797 aq_ret = I40E_ERR_PARAM;
2798 goto error_param;
2799 }
2800
2801 vsi = pf->vsi[vf->lan_vsi_idx];
2802 if (!vsi) {
2803 aq_ret = I40E_ERR_PARAM;
2804 goto error_param;
2805 }
2806 i40e_update_eth_stats(vsi);
2807 stats = vsi->eth_stats;
2808
2809error_param:
2810 /* send the response back to the VF */
2811 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2812 (u8 *)&stats, sizeof(stats));
2813}
2814
2815#define I40E_MAX_MACVLAN_PER_HW 3072
2816#define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \
2817 (num_ports))
2818/* If the VF is not trusted restrict the number of MAC/VLAN it can program
2819 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2820 */
2821#define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2822#define I40E_VC_MAX_VLAN_PER_VF 16
2823
2824#define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \
2825({ typeof(vf_num) vf_num_ = (vf_num); \
2826 typeof(num_ports) num_ports_ = (num_ports); \
2827 ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \
2828 I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \
2829 I40E_VC_MAX_MAC_ADDR_PER_VF; })
2830/**
2831 * i40e_check_vf_permission
2832 * @vf: pointer to the VF info
2833 * @al: MAC address list from virtchnl
2834 *
2835 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2836 * if any address in the list is not valid. Checks the following conditions:
2837 *
2838 * 1) broadcast and zero addresses are never valid
2839 * 2) unicast addresses are not allowed if the VMM has administratively set
2840 * the VF MAC address, unless the VF is marked as privileged.
2841 * 3) There is enough space to add all the addresses.
2842 *
2843 * Note that to guarantee consistency, it is expected this function be called
2844 * while holding the mac_filter_hash_lock, as otherwise the current number of
2845 * addresses might not be accurate.
2846 **/
2847static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2848 struct virtchnl_ether_addr_list *al)
2849{
2850 struct i40e_pf *pf = vf->pf;
2851 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2852 struct i40e_hw *hw = &pf->hw;
2853 int mac2add_cnt = 0;
2854 int i;
2855
2856 for (i = 0; i < al->num_elements; i++) {
2857 struct i40e_mac_filter *f;
2858 u8 *addr = al->list[i].addr;
2859
2860 if (is_broadcast_ether_addr(addr) ||
2861 is_zero_ether_addr(addr)) {
2862 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2863 addr);
2864 return I40E_ERR_INVALID_MAC_ADDR;
2865 }
2866
2867 /* If the host VMM administrator has set the VF MAC address
2868 * administratively via the ndo_set_vf_mac command then deny
2869 * permission to the VF to add or delete unicast MAC addresses.
2870 * Unless the VF is privileged and then it can do whatever.
2871 * The VF may request to set the MAC address filter already
2872 * assigned to it so do not return an error in that case.
2873 */
2874 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2875 !is_multicast_ether_addr(addr) && vf->pf_set_mac &&
2876 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2877 dev_err(&pf->pdev->dev,
2878 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2879 return -EPERM;
2880 }
2881
2882 /*count filters that really will be added*/
2883 f = i40e_find_mac(vsi, addr);
2884 if (!f)
2885 ++mac2add_cnt;
2886 }
2887
2888 /* If this VF is not privileged, then we can't add more than a limited
2889 * number of addresses. Check to make sure that the additions do not
2890 * push us over the limit.
2891 */
2892 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2893 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2894 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2895 dev_err(&pf->pdev->dev,
2896 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2897 return -EPERM;
2898 }
2899 /* If this VF is trusted, it can use more resources than untrusted.
2900 * However to ensure that every trusted VF has appropriate number of
2901 * resources, divide whole pool of resources per port and then across
2902 * all VFs.
2903 */
2904 } else {
2905 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2906 I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
2907 hw->num_ports)) {
2908 dev_err(&pf->pdev->dev,
2909 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
2910 return -EPERM;
2911 }
2912 }
2913 return 0;
2914}
2915
2916/**
2917 * i40e_vc_add_mac_addr_msg
2918 * @vf: pointer to the VF info
2919 * @msg: pointer to the msg buffer
2920 *
2921 * add guest mac address filter
2922 **/
2923static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2924{
2925 struct virtchnl_ether_addr_list *al =
2926 (struct virtchnl_ether_addr_list *)msg;
2927 struct i40e_pf *pf = vf->pf;
2928 struct i40e_vsi *vsi = NULL;
2929 i40e_status ret = 0;
2930 int i;
2931
2932 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
2933 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2934 ret = I40E_ERR_PARAM;
2935 goto error_param;
2936 }
2937
2938 vsi = pf->vsi[vf->lan_vsi_idx];
2939
2940 /* Lock once, because all function inside for loop accesses VSI's
2941 * MAC filter list which needs to be protected using same lock.
2942 */
2943 spin_lock_bh(&vsi->mac_filter_hash_lock);
2944
2945 ret = i40e_check_vf_permission(vf, al);
2946 if (ret) {
2947 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2948 goto error_param;
2949 }
2950
2951 /* add new addresses to the list */
2952 for (i = 0; i < al->num_elements; i++) {
2953 struct i40e_mac_filter *f;
2954
2955 f = i40e_find_mac(vsi, al->list[i].addr);
2956 if (!f) {
2957 f = i40e_add_mac_filter(vsi, al->list[i].addr);
2958
2959 if (!f) {
2960 dev_err(&pf->pdev->dev,
2961 "Unable to add MAC filter %pM for VF %d\n",
2962 al->list[i].addr, vf->vf_id);
2963 ret = I40E_ERR_PARAM;
2964 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2965 goto error_param;
2966 }
2967 if (is_valid_ether_addr(al->list[i].addr) &&
2968 is_zero_ether_addr(vf->default_lan_addr.addr))
2969 ether_addr_copy(vf->default_lan_addr.addr,
2970 al->list[i].addr);
2971 }
2972 }
2973 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2974
2975 /* program the updated filter list */
2976 ret = i40e_sync_vsi_filters(vsi);
2977 if (ret)
2978 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2979 vf->vf_id, ret);
2980
2981error_param:
2982 /* send the response to the VF */
2983 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
2984 ret, NULL, 0);
2985}
2986
2987/**
2988 * i40e_vc_del_mac_addr_msg
2989 * @vf: pointer to the VF info
2990 * @msg: pointer to the msg buffer
2991 *
2992 * remove guest mac address filter
2993 **/
2994static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2995{
2996 struct virtchnl_ether_addr_list *al =
2997 (struct virtchnl_ether_addr_list *)msg;
2998 bool was_unimac_deleted = false;
2999 struct i40e_pf *pf = vf->pf;
3000 struct i40e_vsi *vsi = NULL;
3001 i40e_status ret = 0;
3002 int i;
3003
3004 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3005 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3006 ret = I40E_ERR_PARAM;
3007 goto error_param;
3008 }
3009
3010 for (i = 0; i < al->num_elements; i++) {
3011 if (is_broadcast_ether_addr(al->list[i].addr) ||
3012 is_zero_ether_addr(al->list[i].addr)) {
3013 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
3014 al->list[i].addr, vf->vf_id);
3015 ret = I40E_ERR_INVALID_MAC_ADDR;
3016 goto error_param;
3017 }
3018 if (ether_addr_equal(al->list[i].addr, vf->default_lan_addr.addr))
3019 was_unimac_deleted = true;
3020 }
3021 vsi = pf->vsi[vf->lan_vsi_idx];
3022
3023 spin_lock_bh(&vsi->mac_filter_hash_lock);
3024 /* delete addresses from the list */
3025 for (i = 0; i < al->num_elements; i++)
3026 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
3027 ret = I40E_ERR_INVALID_MAC_ADDR;
3028 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3029 goto error_param;
3030 }
3031
3032 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3033
3034 /* program the updated filter list */
3035 ret = i40e_sync_vsi_filters(vsi);
3036 if (ret)
3037 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3038 vf->vf_id, ret);
3039
3040 if (vf->trusted && was_unimac_deleted) {
3041 struct i40e_mac_filter *f;
3042 struct hlist_node *h;
3043 u8 *macaddr = NULL;
3044 int bkt;
3045
3046 /* set last unicast mac address as default */
3047 spin_lock_bh(&vsi->mac_filter_hash_lock);
3048 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3049 if (is_valid_ether_addr(f->macaddr))
3050 macaddr = f->macaddr;
3051 }
3052 if (macaddr)
3053 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
3054 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3055 }
3056error_param:
3057 /* send the response to the VF */
3058 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3059}
3060
3061/**
3062 * i40e_vc_add_vlan_msg
3063 * @vf: pointer to the VF info
3064 * @msg: pointer to the msg buffer
3065 *
3066 * program guest vlan id
3067 **/
3068static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3069{
3070 struct virtchnl_vlan_filter_list *vfl =
3071 (struct virtchnl_vlan_filter_list *)msg;
3072 struct i40e_pf *pf = vf->pf;
3073 struct i40e_vsi *vsi = NULL;
3074 i40e_status aq_ret = 0;
3075 int i;
3076
3077 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3078 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3079 dev_err(&pf->pdev->dev,
3080 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3081 goto error_param;
3082 }
3083 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3084 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3085 aq_ret = I40E_ERR_PARAM;
3086 goto error_param;
3087 }
3088
3089 for (i = 0; i < vfl->num_elements; i++) {
3090 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3091 aq_ret = I40E_ERR_PARAM;
3092 dev_err(&pf->pdev->dev,
3093 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3094 goto error_param;
3095 }
3096 }
3097 vsi = pf->vsi[vf->lan_vsi_idx];
3098 if (vsi->info.pvid) {
3099 aq_ret = I40E_ERR_PARAM;
3100 goto error_param;
3101 }
3102
3103 i40e_vlan_stripping_enable(vsi);
3104 for (i = 0; i < vfl->num_elements; i++) {
3105 /* add new VLAN filter */
3106 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3107 if (!ret)
3108 vf->num_vlan++;
3109
3110 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3111 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3112 true,
3113 vfl->vlan_id[i],
3114 NULL);
3115 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3116 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3117 true,
3118 vfl->vlan_id[i],
3119 NULL);
3120
3121 if (ret)
3122 dev_err(&pf->pdev->dev,
3123 "Unable to add VLAN filter %d for VF %d, error %d\n",
3124 vfl->vlan_id[i], vf->vf_id, ret);
3125 }
3126
3127error_param:
3128 /* send the response to the VF */
3129 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3130}
3131
3132/**
3133 * i40e_vc_remove_vlan_msg
3134 * @vf: pointer to the VF info
3135 * @msg: pointer to the msg buffer
3136 *
3137 * remove programmed guest vlan id
3138 **/
3139static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3140{
3141 struct virtchnl_vlan_filter_list *vfl =
3142 (struct virtchnl_vlan_filter_list *)msg;
3143 struct i40e_pf *pf = vf->pf;
3144 struct i40e_vsi *vsi = NULL;
3145 i40e_status aq_ret = 0;
3146 int i;
3147
3148 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3149 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3150 aq_ret = I40E_ERR_PARAM;
3151 goto error_param;
3152 }
3153
3154 for (i = 0; i < vfl->num_elements; i++) {
3155 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3156 aq_ret = I40E_ERR_PARAM;
3157 goto error_param;
3158 }
3159 }
3160
3161 vsi = pf->vsi[vf->lan_vsi_idx];
3162 if (vsi->info.pvid) {
3163 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3164 aq_ret = I40E_ERR_PARAM;
3165 goto error_param;
3166 }
3167
3168 for (i = 0; i < vfl->num_elements; i++) {
3169 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3170 vf->num_vlan--;
3171
3172 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3173 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3174 false,
3175 vfl->vlan_id[i],
3176 NULL);
3177 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3178 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3179 false,
3180 vfl->vlan_id[i],
3181 NULL);
3182 }
3183
3184error_param:
3185 /* send the response to the VF */
3186 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3187}
3188
3189/**
3190 * i40e_vc_iwarp_msg
3191 * @vf: pointer to the VF info
3192 * @msg: pointer to the msg buffer
3193 * @msglen: msg length
3194 *
3195 * called from the VF for the iwarp msgs
3196 **/
3197static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3198{
3199 struct i40e_pf *pf = vf->pf;
3200 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3201 i40e_status aq_ret = 0;
3202
3203 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3204 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3205 aq_ret = I40E_ERR_PARAM;
3206 goto error_param;
3207 }
3208
3209 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
3210 msg, msglen);
3211
3212error_param:
3213 /* send the response to the VF */
3214 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP,
3215 aq_ret);
3216}
3217
3218/**
3219 * i40e_vc_iwarp_qvmap_msg
3220 * @vf: pointer to the VF info
3221 * @msg: pointer to the msg buffer
3222 * @config: config qvmap or release it
3223 *
3224 * called from the VF for the iwarp msgs
3225 **/
3226static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3227{
3228 struct virtchnl_iwarp_qvlist_info *qvlist_info =
3229 (struct virtchnl_iwarp_qvlist_info *)msg;
3230 i40e_status aq_ret = 0;
3231
3232 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3233 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3234 aq_ret = I40E_ERR_PARAM;
3235 goto error_param;
3236 }
3237
3238 if (config) {
3239 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
3240 aq_ret = I40E_ERR_PARAM;
3241 } else {
3242 i40e_release_iwarp_qvlist(vf);
3243 }
3244
3245error_param:
3246 /* send the response to the VF */
3247 return i40e_vc_send_resp_to_vf(vf,
3248 config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP :
3249 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP,
3250 aq_ret);
3251}
3252
3253/**
3254 * i40e_vc_config_rss_key
3255 * @vf: pointer to the VF info
3256 * @msg: pointer to the msg buffer
3257 *
3258 * Configure the VF's RSS key
3259 **/
3260static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3261{
3262 struct virtchnl_rss_key *vrk =
3263 (struct virtchnl_rss_key *)msg;
3264 struct i40e_pf *pf = vf->pf;
3265 struct i40e_vsi *vsi = NULL;
3266 i40e_status aq_ret = 0;
3267
3268 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3269 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3270 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3271 aq_ret = I40E_ERR_PARAM;
3272 goto err;
3273 }
3274
3275 vsi = pf->vsi[vf->lan_vsi_idx];
3276 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3277err:
3278 /* send the response to the VF */
3279 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3280 aq_ret);
3281}
3282
3283/**
3284 * i40e_vc_config_rss_lut
3285 * @vf: pointer to the VF info
3286 * @msg: pointer to the msg buffer
3287 *
3288 * Configure the VF's RSS LUT
3289 **/
3290static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3291{
3292 struct virtchnl_rss_lut *vrl =
3293 (struct virtchnl_rss_lut *)msg;
3294 struct i40e_pf *pf = vf->pf;
3295 struct i40e_vsi *vsi = NULL;
3296 i40e_status aq_ret = 0;
3297 u16 i;
3298
3299 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3300 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3301 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3302 aq_ret = I40E_ERR_PARAM;
3303 goto err;
3304 }
3305
3306 for (i = 0; i < vrl->lut_entries; i++)
3307 if (vrl->lut[i] >= vf->num_queue_pairs) {
3308 aq_ret = I40E_ERR_PARAM;
3309 goto err;
3310 }
3311
3312 vsi = pf->vsi[vf->lan_vsi_idx];
3313 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3314 /* send the response to the VF */
3315err:
3316 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3317 aq_ret);
3318}
3319
3320/**
3321 * i40e_vc_get_rss_hena
3322 * @vf: pointer to the VF info
3323 * @msg: pointer to the msg buffer
3324 *
3325 * Return the RSS HENA bits allowed by the hardware
3326 **/
3327static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3328{
3329 struct virtchnl_rss_hena *vrh = NULL;
3330 struct i40e_pf *pf = vf->pf;
3331 i40e_status aq_ret = 0;
3332 int len = 0;
3333
3334 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3335 aq_ret = I40E_ERR_PARAM;
3336 goto err;
3337 }
3338 len = sizeof(struct virtchnl_rss_hena);
3339
3340 vrh = kzalloc(len, GFP_KERNEL);
3341 if (!vrh) {
3342 aq_ret = I40E_ERR_NO_MEMORY;
3343 len = 0;
3344 goto err;
3345 }
3346 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3347err:
3348 /* send the response back to the VF */
3349 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3350 aq_ret, (u8 *)vrh, len);
3351 kfree(vrh);
3352 return aq_ret;
3353}
3354
3355/**
3356 * i40e_vc_set_rss_hena
3357 * @vf: pointer to the VF info
3358 * @msg: pointer to the msg buffer
3359 *
3360 * Set the RSS HENA bits for the VF
3361 **/
3362static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3363{
3364 struct virtchnl_rss_hena *vrh =
3365 (struct virtchnl_rss_hena *)msg;
3366 struct i40e_pf *pf = vf->pf;
3367 struct i40e_hw *hw = &pf->hw;
3368 i40e_status aq_ret = 0;
3369
3370 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3371 aq_ret = I40E_ERR_PARAM;
3372 goto err;
3373 }
3374 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3375 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3376 (u32)(vrh->hena >> 32));
3377
3378 /* send the response to the VF */
3379err:
3380 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3381}
3382
3383/**
3384 * i40e_vc_enable_vlan_stripping
3385 * @vf: pointer to the VF info
3386 * @msg: pointer to the msg buffer
3387 *
3388 * Enable vlan header stripping for the VF
3389 **/
3390static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3391{
3392 i40e_status aq_ret = 0;
3393 struct i40e_vsi *vsi;
3394
3395 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3396 aq_ret = I40E_ERR_PARAM;
3397 goto err;
3398 }
3399
3400 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3401 i40e_vlan_stripping_enable(vsi);
3402
3403 /* send the response to the VF */
3404err:
3405 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3406 aq_ret);
3407}
3408
3409/**
3410 * i40e_vc_disable_vlan_stripping
3411 * @vf: pointer to the VF info
3412 * @msg: pointer to the msg buffer
3413 *
3414 * Disable vlan header stripping for the VF
3415 **/
3416static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3417{
3418 i40e_status aq_ret = 0;
3419 struct i40e_vsi *vsi;
3420
3421 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3422 aq_ret = I40E_ERR_PARAM;
3423 goto err;
3424 }
3425
3426 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3427 i40e_vlan_stripping_disable(vsi);
3428
3429 /* send the response to the VF */
3430err:
3431 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3432 aq_ret);
3433}
3434
3435/**
3436 * i40e_validate_cloud_filter
3437 * @vf: pointer to VF structure
3438 * @tc_filter: pointer to filter requested
3439 *
3440 * This function validates cloud filter programmed as TC filter for ADq
3441 **/
3442static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3443 struct virtchnl_filter *tc_filter)
3444{
3445 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3446 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3447 struct i40e_pf *pf = vf->pf;
3448 struct i40e_vsi *vsi = NULL;
3449 struct i40e_mac_filter *f;
3450 struct hlist_node *h;
3451 bool found = false;
3452 int bkt;
3453
3454 if (!tc_filter->action) {
3455 dev_info(&pf->pdev->dev,
3456 "VF %d: Currently ADq doesn't support Drop Action\n",
3457 vf->vf_id);
3458 goto err;
3459 }
3460
3461 /* action_meta is TC number here to which the filter is applied */
3462 if (!tc_filter->action_meta ||
3463 tc_filter->action_meta > I40E_MAX_VF_VSI) {
3464 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3465 vf->vf_id, tc_filter->action_meta);
3466 goto err;
3467 }
3468
3469 /* Check filter if it's programmed for advanced mode or basic mode.
3470 * There are two ADq modes (for VF only),
3471 * 1. Basic mode: intended to allow as many filter options as possible
3472 * to be added to a VF in Non-trusted mode. Main goal is
3473 * to add filters to its own MAC and VLAN id.
3474 * 2. Advanced mode: is for allowing filters to be applied other than
3475 * its own MAC or VLAN. This mode requires the VF to be
3476 * Trusted.
3477 */
3478 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3479 vsi = pf->vsi[vf->lan_vsi_idx];
3480 f = i40e_find_mac(vsi, data.dst_mac);
3481
3482 if (!f) {
3483 dev_info(&pf->pdev->dev,
3484 "Destination MAC %pM doesn't belong to VF %d\n",
3485 data.dst_mac, vf->vf_id);
3486 goto err;
3487 }
3488
3489 if (mask.vlan_id) {
3490 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3491 hlist) {
3492 if (f->vlan == ntohs(data.vlan_id)) {
3493 found = true;
3494 break;
3495 }
3496 }
3497 if (!found) {
3498 dev_info(&pf->pdev->dev,
3499 "VF %d doesn't have any VLAN id %u\n",
3500 vf->vf_id, ntohs(data.vlan_id));
3501 goto err;
3502 }
3503 }
3504 } else {
3505 /* Check if VF is trusted */
3506 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3507 dev_err(&pf->pdev->dev,
3508 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3509 vf->vf_id);
3510 return I40E_ERR_CONFIG;
3511 }
3512 }
3513
3514 if (mask.dst_mac[0] & data.dst_mac[0]) {
3515 if (is_broadcast_ether_addr(data.dst_mac) ||
3516 is_zero_ether_addr(data.dst_mac)) {
3517 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3518 vf->vf_id, data.dst_mac);
3519 goto err;
3520 }
3521 }
3522
3523 if (mask.src_mac[0] & data.src_mac[0]) {
3524 if (is_broadcast_ether_addr(data.src_mac) ||
3525 is_zero_ether_addr(data.src_mac)) {
3526 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3527 vf->vf_id, data.src_mac);
3528 goto err;
3529 }
3530 }
3531
3532 if (mask.dst_port & data.dst_port) {
3533 if (!data.dst_port) {
3534 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3535 vf->vf_id);
3536 goto err;
3537 }
3538 }
3539
3540 if (mask.src_port & data.src_port) {
3541 if (!data.src_port) {
3542 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3543 vf->vf_id);
3544 goto err;
3545 }
3546 }
3547
3548 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3549 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3550 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3551 vf->vf_id);
3552 goto err;
3553 }
3554
3555 if (mask.vlan_id & data.vlan_id) {
3556 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3557 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3558 vf->vf_id);
3559 goto err;
3560 }
3561 }
3562
3563 return I40E_SUCCESS;
3564err:
3565 return I40E_ERR_CONFIG;
3566}
3567
3568/**
3569 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3570 * @vf: pointer to the VF info
3571 * @seid: seid of the vsi it is searching for
3572 **/
3573static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3574{
3575 struct i40e_pf *pf = vf->pf;
3576 struct i40e_vsi *vsi = NULL;
3577 int i;
3578
3579 for (i = 0; i < vf->num_tc ; i++) {
3580 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3581 if (vsi && vsi->seid == seid)
3582 return vsi;
3583 }
3584 return NULL;
3585}
3586
3587/**
3588 * i40e_del_all_cloud_filters
3589 * @vf: pointer to the VF info
3590 *
3591 * This function deletes all cloud filters
3592 **/
3593static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3594{
3595 struct i40e_cloud_filter *cfilter = NULL;
3596 struct i40e_pf *pf = vf->pf;
3597 struct i40e_vsi *vsi = NULL;
3598 struct hlist_node *node;
3599 int ret;
3600
3601 hlist_for_each_entry_safe(cfilter, node,
3602 &vf->cloud_filter_list, cloud_node) {
3603 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3604
3605 if (!vsi) {
3606 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3607 vf->vf_id, cfilter->seid);
3608 continue;
3609 }
3610
3611 if (cfilter->dst_port)
3612 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3613 false);
3614 else
3615 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3616 if (ret)
3617 dev_err(&pf->pdev->dev,
3618 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3619 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3620 i40e_aq_str(&pf->hw,
3621 pf->hw.aq.asq_last_status));
3622
3623 hlist_del(&cfilter->cloud_node);
3624 kfree(cfilter);
3625 vf->num_cloud_filters--;
3626 }
3627}
3628
3629/**
3630 * i40e_vc_del_cloud_filter
3631 * @vf: pointer to the VF info
3632 * @msg: pointer to the msg buffer
3633 *
3634 * This function deletes a cloud filter programmed as TC filter for ADq
3635 **/
3636static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3637{
3638 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3639 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3640 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3641 struct i40e_cloud_filter cfilter, *cf = NULL;
3642 struct i40e_pf *pf = vf->pf;
3643 struct i40e_vsi *vsi = NULL;
3644 struct hlist_node *node;
3645 i40e_status aq_ret = 0;
3646 int i, ret;
3647
3648 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3649 aq_ret = I40E_ERR_PARAM;
3650 goto err;
3651 }
3652
3653 if (!vf->adq_enabled) {
3654 dev_info(&pf->pdev->dev,
3655 "VF %d: ADq not enabled, can't apply cloud filter\n",
3656 vf->vf_id);
3657 aq_ret = I40E_ERR_PARAM;
3658 goto err;
3659 }
3660
3661 if (i40e_validate_cloud_filter(vf, vcf)) {
3662 dev_info(&pf->pdev->dev,
3663 "VF %d: Invalid input, can't apply cloud filter\n",
3664 vf->vf_id);
3665 aq_ret = I40E_ERR_PARAM;
3666 goto err;
3667 }
3668
3669 memset(&cfilter, 0, sizeof(cfilter));
3670 /* parse destination mac address */
3671 for (i = 0; i < ETH_ALEN; i++)
3672 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3673
3674 /* parse source mac address */
3675 for (i = 0; i < ETH_ALEN; i++)
3676 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3677
3678 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3679 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3680 cfilter.src_port = mask.src_port & tcf.src_port;
3681
3682 switch (vcf->flow_type) {
3683 case VIRTCHNL_TCP_V4_FLOW:
3684 cfilter.n_proto = ETH_P_IP;
3685 if (mask.dst_ip[0] & tcf.dst_ip[0])
3686 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3687 ARRAY_SIZE(tcf.dst_ip));
3688 else if (mask.src_ip[0] & tcf.dst_ip[0])
3689 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3690 ARRAY_SIZE(tcf.dst_ip));
3691 break;
3692 case VIRTCHNL_TCP_V6_FLOW:
3693 cfilter.n_proto = ETH_P_IPV6;
3694 if (mask.dst_ip[3] & tcf.dst_ip[3])
3695 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3696 sizeof(cfilter.ip.v6.dst_ip6));
3697 if (mask.src_ip[3] & tcf.src_ip[3])
3698 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3699 sizeof(cfilter.ip.v6.src_ip6));
3700 break;
3701 default:
3702 /* TC filter can be configured based on different combinations
3703 * and in this case IP is not a part of filter config
3704 */
3705 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3706 vf->vf_id);
3707 }
3708
3709 /* get the vsi to which the tc belongs to */
3710 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3711 cfilter.seid = vsi->seid;
3712 cfilter.flags = vcf->field_flags;
3713
3714 /* Deleting TC filter */
3715 if (tcf.dst_port)
3716 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3717 else
3718 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3719 if (ret) {
3720 dev_err(&pf->pdev->dev,
3721 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3722 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3723 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3724 goto err;
3725 }
3726
3727 hlist_for_each_entry_safe(cf, node,
3728 &vf->cloud_filter_list, cloud_node) {
3729 if (cf->seid != cfilter.seid)
3730 continue;
3731 if (mask.dst_port)
3732 if (cfilter.dst_port != cf->dst_port)
3733 continue;
3734 if (mask.dst_mac[0])
3735 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3736 continue;
3737 /* for ipv4 data to be valid, only first byte of mask is set */
3738 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3739 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3740 ARRAY_SIZE(tcf.dst_ip)))
3741 continue;
3742 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3743 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3744 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3745 sizeof(cfilter.ip.v6.src_ip6)))
3746 continue;
3747 if (mask.vlan_id)
3748 if (cfilter.vlan_id != cf->vlan_id)
3749 continue;
3750
3751 hlist_del(&cf->cloud_node);
3752 kfree(cf);
3753 vf->num_cloud_filters--;
3754 }
3755
3756err:
3757 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3758 aq_ret);
3759}
3760
3761/**
3762 * i40e_vc_add_cloud_filter
3763 * @vf: pointer to the VF info
3764 * @msg: pointer to the msg buffer
3765 *
3766 * This function adds a cloud filter programmed as TC filter for ADq
3767 **/
3768static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3769{
3770 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3771 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3772 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3773 struct i40e_cloud_filter *cfilter = NULL;
3774 struct i40e_pf *pf = vf->pf;
3775 struct i40e_vsi *vsi = NULL;
3776 i40e_status aq_ret = 0;
3777 int i, ret;
3778
3779 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3780 aq_ret = I40E_ERR_PARAM;
3781 goto err_out;
3782 }
3783
3784 if (!vf->adq_enabled) {
3785 dev_info(&pf->pdev->dev,
3786 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3787 vf->vf_id);
3788 aq_ret = I40E_ERR_PARAM;
3789 goto err_out;
3790 }
3791
3792 if (i40e_validate_cloud_filter(vf, vcf)) {
3793 dev_info(&pf->pdev->dev,
3794 "VF %d: Invalid input/s, can't apply cloud filter\n",
3795 vf->vf_id);
3796 aq_ret = I40E_ERR_PARAM;
3797 goto err_out;
3798 }
3799
3800 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3801 if (!cfilter)
3802 return -ENOMEM;
3803
3804 /* parse destination mac address */
3805 for (i = 0; i < ETH_ALEN; i++)
3806 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3807
3808 /* parse source mac address */
3809 for (i = 0; i < ETH_ALEN; i++)
3810 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3811
3812 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3813 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3814 cfilter->src_port = mask.src_port & tcf.src_port;
3815
3816 switch (vcf->flow_type) {
3817 case VIRTCHNL_TCP_V4_FLOW:
3818 cfilter->n_proto = ETH_P_IP;
3819 if (mask.dst_ip[0] & tcf.dst_ip[0])
3820 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3821 ARRAY_SIZE(tcf.dst_ip));
3822 else if (mask.src_ip[0] & tcf.dst_ip[0])
3823 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3824 ARRAY_SIZE(tcf.dst_ip));
3825 break;
3826 case VIRTCHNL_TCP_V6_FLOW:
3827 cfilter->n_proto = ETH_P_IPV6;
3828 if (mask.dst_ip[3] & tcf.dst_ip[3])
3829 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3830 sizeof(cfilter->ip.v6.dst_ip6));
3831 if (mask.src_ip[3] & tcf.src_ip[3])
3832 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3833 sizeof(cfilter->ip.v6.src_ip6));
3834 break;
3835 default:
3836 /* TC filter can be configured based on different combinations
3837 * and in this case IP is not a part of filter config
3838 */
3839 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3840 vf->vf_id);
3841 }
3842
3843 /* get the VSI to which the TC belongs to */
3844 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3845 cfilter->seid = vsi->seid;
3846 cfilter->flags = vcf->field_flags;
3847
3848 /* Adding cloud filter programmed as TC filter */
3849 if (tcf.dst_port)
3850 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3851 else
3852 ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3853 if (ret) {
3854 dev_err(&pf->pdev->dev,
3855 "VF %d: Failed to add cloud filter, err %s aq_err %s\n",
3856 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3857 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3858 goto err_free;
3859 }
3860
3861 INIT_HLIST_NODE(&cfilter->cloud_node);
3862 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3863 /* release the pointer passing it to the collection */
3864 cfilter = NULL;
3865 vf->num_cloud_filters++;
3866err_free:
3867 kfree(cfilter);
3868err_out:
3869 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
3870 aq_ret);
3871}
3872
3873/**
3874 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
3875 * @vf: pointer to the VF info
3876 * @msg: pointer to the msg buffer
3877 **/
3878static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
3879{
3880 struct virtchnl_tc_info *tci =
3881 (struct virtchnl_tc_info *)msg;
3882 struct i40e_pf *pf = vf->pf;
3883 struct i40e_link_status *ls = &pf->hw.phy.link_info;
3884 int i, adq_request_qps = 0;
3885 i40e_status aq_ret = 0;
3886 u64 speed = 0;
3887
3888 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3889 aq_ret = I40E_ERR_PARAM;
3890 goto err;
3891 }
3892
3893 /* ADq cannot be applied if spoof check is ON */
3894 if (vf->spoofchk) {
3895 dev_err(&pf->pdev->dev,
3896 "Spoof check is ON, turn it OFF to enable ADq\n");
3897 aq_ret = I40E_ERR_PARAM;
3898 goto err;
3899 }
3900
3901 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
3902 dev_err(&pf->pdev->dev,
3903 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
3904 vf->vf_id);
3905 aq_ret = I40E_ERR_PARAM;
3906 goto err;
3907 }
3908
3909 /* max number of traffic classes for VF currently capped at 4 */
3910 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
3911 dev_err(&pf->pdev->dev,
3912 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
3913 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
3914 aq_ret = I40E_ERR_PARAM;
3915 goto err;
3916 }
3917
3918 /* validate queues for each TC */
3919 for (i = 0; i < tci->num_tc; i++)
3920 if (!tci->list[i].count ||
3921 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
3922 dev_err(&pf->pdev->dev,
3923 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
3924 vf->vf_id, i, tci->list[i].count,
3925 I40E_DEFAULT_QUEUES_PER_VF);
3926 aq_ret = I40E_ERR_PARAM;
3927 goto err;
3928 }
3929
3930 /* need Max VF queues but already have default number of queues */
3931 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
3932
3933 if (pf->queues_left < adq_request_qps) {
3934 dev_err(&pf->pdev->dev,
3935 "No queues left to allocate to VF %d\n",
3936 vf->vf_id);
3937 aq_ret = I40E_ERR_PARAM;
3938 goto err;
3939 } else {
3940 /* we need to allocate max VF queues to enable ADq so as to
3941 * make sure ADq enabled VF always gets back queues when it
3942 * goes through a reset.
3943 */
3944 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
3945 }
3946
3947 /* get link speed in MB to validate rate limit */
3948 speed = i40e_vc_link_speed2mbps(ls->link_speed);
3949 if (speed == SPEED_UNKNOWN) {
3950 dev_err(&pf->pdev->dev,
3951 "Cannot detect link speed\n");
3952 aq_ret = I40E_ERR_PARAM;
3953 goto err;
3954 }
3955
3956 /* parse data from the queue channel info */
3957 vf->num_tc = tci->num_tc;
3958 for (i = 0; i < vf->num_tc; i++) {
3959 if (tci->list[i].max_tx_rate) {
3960 if (tci->list[i].max_tx_rate > speed) {
3961 dev_err(&pf->pdev->dev,
3962 "Invalid max tx rate %llu specified for VF %d.",
3963 tci->list[i].max_tx_rate,
3964 vf->vf_id);
3965 aq_ret = I40E_ERR_PARAM;
3966 goto err;
3967 } else {
3968 vf->ch[i].max_tx_rate =
3969 tci->list[i].max_tx_rate;
3970 }
3971 }
3972 vf->ch[i].num_qps = tci->list[i].count;
3973 }
3974
3975 /* set this flag only after making sure all inputs are sane */
3976 vf->adq_enabled = true;
3977
3978 /* reset the VF in order to allocate resources */
3979 i40e_vc_reset_vf(vf, true);
3980
3981 return I40E_SUCCESS;
3982
3983 /* send the response to the VF */
3984err:
3985 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
3986 aq_ret);
3987}
3988
3989/**
3990 * i40e_vc_del_qch_msg
3991 * @vf: pointer to the VF info
3992 * @msg: pointer to the msg buffer
3993 **/
3994static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
3995{
3996 struct i40e_pf *pf = vf->pf;
3997 i40e_status aq_ret = 0;
3998
3999 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4000 aq_ret = I40E_ERR_PARAM;
4001 goto err;
4002 }
4003
4004 if (vf->adq_enabled) {
4005 i40e_del_all_cloud_filters(vf);
4006 i40e_del_qch(vf);
4007 vf->adq_enabled = false;
4008 vf->num_tc = 0;
4009 dev_info(&pf->pdev->dev,
4010 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
4011 vf->vf_id);
4012 } else {
4013 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
4014 vf->vf_id);
4015 aq_ret = I40E_ERR_PARAM;
4016 }
4017
4018 /* reset the VF in order to allocate resources */
4019 i40e_vc_reset_vf(vf, true);
4020
4021 return I40E_SUCCESS;
4022
4023err:
4024 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
4025 aq_ret);
4026}
4027
4028/**
4029 * i40e_vc_process_vf_msg
4030 * @pf: pointer to the PF structure
4031 * @vf_id: source VF id
4032 * @v_opcode: operation code
4033 * @v_retval: unused return value code
4034 * @msg: pointer to the msg buffer
4035 * @msglen: msg length
4036 *
4037 * called from the common aeq/arq handler to
4038 * process request from VF
4039 **/
4040int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4041 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4042{
4043 struct i40e_hw *hw = &pf->hw;
4044 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4045 struct i40e_vf *vf;
4046 int ret;
4047
4048 pf->vf_aq_requests++;
4049 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4050 return -EINVAL;
4051 vf = &(pf->vf[local_vf_id]);
4052
4053 /* Check if VF is disabled. */
4054 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4055 return I40E_ERR_PARAM;
4056
4057 /* perform basic checks on the msg */
4058 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4059
4060 if (ret) {
4061 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
4062 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4063 local_vf_id, v_opcode, msglen);
4064 switch (ret) {
4065 case VIRTCHNL_STATUS_ERR_PARAM:
4066 return -EPERM;
4067 default:
4068 return -EINVAL;
4069 }
4070 }
4071
4072 switch (v_opcode) {
4073 case VIRTCHNL_OP_VERSION:
4074 ret = i40e_vc_get_version_msg(vf, msg);
4075 break;
4076 case VIRTCHNL_OP_GET_VF_RESOURCES:
4077 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4078 i40e_vc_notify_vf_link_state(vf);
4079 break;
4080 case VIRTCHNL_OP_RESET_VF:
4081 i40e_vc_reset_vf(vf, false);
4082 ret = 0;
4083 break;
4084 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4085 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4086 break;
4087 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4088 ret = i40e_vc_config_queues_msg(vf, msg);
4089 break;
4090 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4091 ret = i40e_vc_config_irq_map_msg(vf, msg);
4092 break;
4093 case VIRTCHNL_OP_ENABLE_QUEUES:
4094 ret = i40e_vc_enable_queues_msg(vf, msg);
4095 i40e_vc_notify_vf_link_state(vf);
4096 break;
4097 case VIRTCHNL_OP_DISABLE_QUEUES:
4098 ret = i40e_vc_disable_queues_msg(vf, msg);
4099 break;
4100 case VIRTCHNL_OP_ADD_ETH_ADDR:
4101 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4102 break;
4103 case VIRTCHNL_OP_DEL_ETH_ADDR:
4104 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4105 break;
4106 case VIRTCHNL_OP_ADD_VLAN:
4107 ret = i40e_vc_add_vlan_msg(vf, msg);
4108 break;
4109 case VIRTCHNL_OP_DEL_VLAN:
4110 ret = i40e_vc_remove_vlan_msg(vf, msg);
4111 break;
4112 case VIRTCHNL_OP_GET_STATS:
4113 ret = i40e_vc_get_stats_msg(vf, msg);
4114 break;
4115 case VIRTCHNL_OP_IWARP:
4116 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
4117 break;
4118 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
4119 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, true);
4120 break;
4121 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
4122 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, false);
4123 break;
4124 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4125 ret = i40e_vc_config_rss_key(vf, msg);
4126 break;
4127 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4128 ret = i40e_vc_config_rss_lut(vf, msg);
4129 break;
4130 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4131 ret = i40e_vc_get_rss_hena(vf, msg);
4132 break;
4133 case VIRTCHNL_OP_SET_RSS_HENA:
4134 ret = i40e_vc_set_rss_hena(vf, msg);
4135 break;
4136 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4137 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4138 break;
4139 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4140 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4141 break;
4142 case VIRTCHNL_OP_REQUEST_QUEUES:
4143 ret = i40e_vc_request_queues_msg(vf, msg);
4144 break;
4145 case VIRTCHNL_OP_ENABLE_CHANNELS:
4146 ret = i40e_vc_add_qch_msg(vf, msg);
4147 break;
4148 case VIRTCHNL_OP_DISABLE_CHANNELS:
4149 ret = i40e_vc_del_qch_msg(vf, msg);
4150 break;
4151 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4152 ret = i40e_vc_add_cloud_filter(vf, msg);
4153 break;
4154 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4155 ret = i40e_vc_del_cloud_filter(vf, msg);
4156 break;
4157 case VIRTCHNL_OP_UNKNOWN:
4158 default:
4159 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4160 v_opcode, local_vf_id);
4161 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4162 I40E_ERR_NOT_IMPLEMENTED);
4163 break;
4164 }
4165
4166 return ret;
4167}
4168
4169/**
4170 * i40e_vc_process_vflr_event
4171 * @pf: pointer to the PF structure
4172 *
4173 * called from the vlfr irq handler to
4174 * free up VF resources and state variables
4175 **/
4176int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4177{
4178 struct i40e_hw *hw = &pf->hw;
4179 u32 reg, reg_idx, bit_idx;
4180 struct i40e_vf *vf;
4181 int vf_id;
4182
4183 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4184 return 0;
4185
4186 /* Re-enable the VFLR interrupt cause here, before looking for which
4187 * VF got reset. Otherwise, if another VF gets a reset while the
4188 * first one is being processed, that interrupt will be lost, and
4189 * that VF will be stuck in reset forever.
4190 */
4191 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4192 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4193 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4194 i40e_flush(hw);
4195
4196 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4197 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4198 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4199 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4200 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4201 vf = &pf->vf[vf_id];
4202 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4203 if (reg & BIT(bit_idx))
4204 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4205 i40e_reset_vf(vf, true);
4206 }
4207
4208 return 0;
4209}
4210
4211/**
4212 * i40e_validate_vf
4213 * @pf: the physical function
4214 * @vf_id: VF identifier
4215 *
4216 * Check that the VF is enabled and the VSI exists.
4217 *
4218 * Returns 0 on success, negative on failure
4219 **/
4220static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4221{
4222 struct i40e_vsi *vsi;
4223 struct i40e_vf *vf;
4224 int ret = 0;
4225
4226 if (vf_id >= pf->num_alloc_vfs) {
4227 dev_err(&pf->pdev->dev,
4228 "Invalid VF Identifier %d\n", vf_id);
4229 ret = -EINVAL;
4230 goto err_out;
4231 }
4232 vf = &pf->vf[vf_id];
4233 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4234 if (!vsi)
4235 ret = -EINVAL;
4236err_out:
4237 return ret;
4238}
4239
4240/**
4241 * i40e_ndo_set_vf_mac
4242 * @netdev: network interface device structure
4243 * @vf_id: VF identifier
4244 * @mac: mac address
4245 *
4246 * program VF mac address
4247 **/
4248int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4249{
4250 struct i40e_netdev_priv *np = netdev_priv(netdev);
4251 struct i40e_vsi *vsi = np->vsi;
4252 struct i40e_pf *pf = vsi->back;
4253 struct i40e_mac_filter *f;
4254 struct i40e_vf *vf;
4255 int ret = 0;
4256 struct hlist_node *h;
4257 int bkt;
4258 u8 i;
4259
4260 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4261 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4262 return -EAGAIN;
4263 }
4264
4265 /* validate the request */
4266 ret = i40e_validate_vf(pf, vf_id);
4267 if (ret)
4268 goto error_param;
4269
4270 vf = &pf->vf[vf_id];
4271
4272 /* When the VF is resetting wait until it is done.
4273 * It can take up to 200 milliseconds,
4274 * but wait for up to 300 milliseconds to be safe.
4275 * Acquire the VSI pointer only after the VF has been
4276 * properly initialized.
4277 */
4278 for (i = 0; i < 15; i++) {
4279 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4280 break;
4281 msleep(20);
4282 }
4283 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4284 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4285 vf_id);
4286 ret = -EAGAIN;
4287 goto error_param;
4288 }
4289 vsi = pf->vsi[vf->lan_vsi_idx];
4290
4291 if (is_multicast_ether_addr(mac)) {
4292 dev_err(&pf->pdev->dev,
4293 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4294 ret = -EINVAL;
4295 goto error_param;
4296 }
4297
4298 /* Lock once because below invoked function add/del_filter requires
4299 * mac_filter_hash_lock to be held
4300 */
4301 spin_lock_bh(&vsi->mac_filter_hash_lock);
4302
4303 /* delete the temporary mac address */
4304 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4305 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4306
4307 /* Delete all the filters for this VSI - we're going to kill it
4308 * anyway.
4309 */
4310 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4311 __i40e_del_filter(vsi, f);
4312
4313 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4314
4315 /* program mac filter */
4316 if (i40e_sync_vsi_filters(vsi)) {
4317 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4318 ret = -EIO;
4319 goto error_param;
4320 }
4321 ether_addr_copy(vf->default_lan_addr.addr, mac);
4322
4323 if (is_zero_ether_addr(mac)) {
4324 vf->pf_set_mac = false;
4325 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4326 } else {
4327 vf->pf_set_mac = true;
4328 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4329 mac, vf_id);
4330 }
4331
4332 /* Force the VF interface down so it has to bring up with new MAC
4333 * address
4334 */
4335 i40e_vc_reset_vf(vf, true);
4336 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4337
4338error_param:
4339 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4340 return ret;
4341}
4342
4343/**
4344 * i40e_ndo_set_vf_port_vlan
4345 * @netdev: network interface device structure
4346 * @vf_id: VF identifier
4347 * @vlan_id: mac address
4348 * @qos: priority setting
4349 * @vlan_proto: vlan protocol
4350 *
4351 * program VF vlan id and/or qos
4352 **/
4353int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4354 u16 vlan_id, u8 qos, __be16 vlan_proto)
4355{
4356 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4357 struct i40e_netdev_priv *np = netdev_priv(netdev);
4358 bool allmulti = false, alluni = false;
4359 struct i40e_pf *pf = np->vsi->back;
4360 struct i40e_vsi *vsi;
4361 struct i40e_vf *vf;
4362 int ret = 0;
4363
4364 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4365 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4366 return -EAGAIN;
4367 }
4368
4369 /* validate the request */
4370 ret = i40e_validate_vf(pf, vf_id);
4371 if (ret)
4372 goto error_pvid;
4373
4374 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4375 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4376 ret = -EINVAL;
4377 goto error_pvid;
4378 }
4379
4380 if (vlan_proto != htons(ETH_P_8021Q)) {
4381 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4382 ret = -EPROTONOSUPPORT;
4383 goto error_pvid;
4384 }
4385
4386 vf = &pf->vf[vf_id];
4387 vsi = pf->vsi[vf->lan_vsi_idx];
4388 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4389 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4390 vf_id);
4391 ret = -EAGAIN;
4392 goto error_pvid;
4393 }
4394
4395 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4396 /* duplicate request, so just return success */
4397 goto error_pvid;
4398
4399 i40e_vlan_stripping_enable(vsi);
4400 i40e_vc_reset_vf(vf, true);
4401 /* During reset the VF got a new VSI, so refresh a pointer. */
4402 vsi = pf->vsi[vf->lan_vsi_idx];
4403 /* Locked once because multiple functions below iterate list */
4404 spin_lock_bh(&vsi->mac_filter_hash_lock);
4405
4406 /* Check for condition where there was already a port VLAN ID
4407 * filter set and now it is being deleted by setting it to zero.
4408 * Additionally check for the condition where there was a port
4409 * VLAN but now there is a new and different port VLAN being set.
4410 * Before deleting all the old VLAN filters we must add new ones
4411 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4412 * MAC addresses deleted.
4413 */
4414 if ((!(vlan_id || qos) ||
4415 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4416 vsi->info.pvid) {
4417 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4418 if (ret) {
4419 dev_info(&vsi->back->pdev->dev,
4420 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4421 vsi->back->hw.aq.asq_last_status);
4422 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4423 goto error_pvid;
4424 }
4425 }
4426
4427 if (vsi->info.pvid) {
4428 /* remove all filters on the old VLAN */
4429 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4430 VLAN_VID_MASK));
4431 }
4432
4433 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4434
4435 /* disable promisc modes in case they were enabled */
4436 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4437 allmulti, alluni);
4438 if (ret) {
4439 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4440 goto error_pvid;
4441 }
4442
4443 if (vlan_id || qos)
4444 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4445 else
4446 i40e_vsi_remove_pvid(vsi);
4447 spin_lock_bh(&vsi->mac_filter_hash_lock);
4448
4449 if (vlan_id) {
4450 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4451 vlan_id, qos, vf_id);
4452
4453 /* add new VLAN filter for each MAC */
4454 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4455 if (ret) {
4456 dev_info(&vsi->back->pdev->dev,
4457 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4458 vsi->back->hw.aq.asq_last_status);
4459 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4460 goto error_pvid;
4461 }
4462
4463 /* remove the previously added non-VLAN MAC filters */
4464 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4465 }
4466
4467 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4468
4469 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4470 alluni = true;
4471
4472 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4473 allmulti = true;
4474
4475 /* Schedule the worker thread to take care of applying changes */
4476 i40e_service_event_schedule(vsi->back);
4477
4478 if (ret) {
4479 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4480 goto error_pvid;
4481 }
4482
4483 /* The Port VLAN needs to be saved across resets the same as the
4484 * default LAN MAC address.
4485 */
4486 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4487
4488 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4489 if (ret) {
4490 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4491 goto error_pvid;
4492 }
4493
4494 ret = 0;
4495
4496error_pvid:
4497 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4498 return ret;
4499}
4500
4501/**
4502 * i40e_ndo_set_vf_bw
4503 * @netdev: network interface device structure
4504 * @vf_id: VF identifier
4505 * @min_tx_rate: Minimum Tx rate
4506 * @max_tx_rate: Maximum Tx rate
4507 *
4508 * configure VF Tx rate
4509 **/
4510int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4511 int max_tx_rate)
4512{
4513 struct i40e_netdev_priv *np = netdev_priv(netdev);
4514 struct i40e_pf *pf = np->vsi->back;
4515 struct i40e_vsi *vsi;
4516 struct i40e_vf *vf;
4517 int ret = 0;
4518
4519 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4520 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4521 return -EAGAIN;
4522 }
4523
4524 /* validate the request */
4525 ret = i40e_validate_vf(pf, vf_id);
4526 if (ret)
4527 goto error;
4528
4529 if (min_tx_rate) {
4530 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4531 min_tx_rate, vf_id);
4532 ret = -EINVAL;
4533 goto error;
4534 }
4535
4536 vf = &pf->vf[vf_id];
4537 vsi = pf->vsi[vf->lan_vsi_idx];
4538 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4539 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4540 vf_id);
4541 ret = -EAGAIN;
4542 goto error;
4543 }
4544
4545 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4546 if (ret)
4547 goto error;
4548
4549 vf->tx_rate = max_tx_rate;
4550error:
4551 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4552 return ret;
4553}
4554
4555/**
4556 * i40e_ndo_get_vf_config
4557 * @netdev: network interface device structure
4558 * @vf_id: VF identifier
4559 * @ivi: VF configuration structure
4560 *
4561 * return VF configuration
4562 **/
4563int i40e_ndo_get_vf_config(struct net_device *netdev,
4564 int vf_id, struct ifla_vf_info *ivi)
4565{
4566 struct i40e_netdev_priv *np = netdev_priv(netdev);
4567 struct i40e_vsi *vsi = np->vsi;
4568 struct i40e_pf *pf = vsi->back;
4569 struct i40e_vf *vf;
4570 int ret = 0;
4571
4572 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4573 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4574 return -EAGAIN;
4575 }
4576
4577 /* validate the request */
4578 ret = i40e_validate_vf(pf, vf_id);
4579 if (ret)
4580 goto error_param;
4581
4582 vf = &pf->vf[vf_id];
4583 /* first vsi is always the LAN vsi */
4584 vsi = pf->vsi[vf->lan_vsi_idx];
4585 if (!vsi) {
4586 ret = -ENOENT;
4587 goto error_param;
4588 }
4589
4590 ivi->vf = vf_id;
4591
4592 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4593
4594 ivi->max_tx_rate = vf->tx_rate;
4595 ivi->min_tx_rate = 0;
4596 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
4597 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
4598 I40E_VLAN_PRIORITY_SHIFT;
4599 if (vf->link_forced == false)
4600 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4601 else if (vf->link_up == true)
4602 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4603 else
4604 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4605 ivi->spoofchk = vf->spoofchk;
4606 ivi->trusted = vf->trusted;
4607 ret = 0;
4608
4609error_param:
4610 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4611 return ret;
4612}
4613
4614/**
4615 * i40e_ndo_set_vf_link_state
4616 * @netdev: network interface device structure
4617 * @vf_id: VF identifier
4618 * @link: required link state
4619 *
4620 * Set the link state of a specified VF, regardless of physical link state
4621 **/
4622int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4623{
4624 struct i40e_netdev_priv *np = netdev_priv(netdev);
4625 struct i40e_pf *pf = np->vsi->back;
4626 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4627 struct virtchnl_pf_event pfe;
4628 struct i40e_hw *hw = &pf->hw;
4629 struct i40e_vf *vf;
4630 int abs_vf_id;
4631 int ret = 0;
4632
4633 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4634 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4635 return -EAGAIN;
4636 }
4637
4638 /* validate the request */
4639 if (vf_id >= pf->num_alloc_vfs) {
4640 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4641 ret = -EINVAL;
4642 goto error_out;
4643 }
4644
4645 vf = &pf->vf[vf_id];
4646 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4647
4648 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4649 pfe.severity = PF_EVENT_SEVERITY_INFO;
4650
4651 switch (link) {
4652 case IFLA_VF_LINK_STATE_AUTO:
4653 vf->link_forced = false;
4654 i40e_set_vf_link_state(vf, &pfe, ls);
4655 break;
4656 case IFLA_VF_LINK_STATE_ENABLE:
4657 vf->link_forced = true;
4658 vf->link_up = true;
4659 i40e_set_vf_link_state(vf, &pfe, ls);
4660 break;
4661 case IFLA_VF_LINK_STATE_DISABLE:
4662 vf->link_forced = true;
4663 vf->link_up = false;
4664 i40e_set_vf_link_state(vf, &pfe, ls);
4665 break;
4666 default:
4667 ret = -EINVAL;
4668 goto error_out;
4669 }
4670 /* Notify the VF of its new link state */
4671 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4672 0, (u8 *)&pfe, sizeof(pfe), NULL);
4673
4674error_out:
4675 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4676 return ret;
4677}
4678
4679/**
4680 * i40e_ndo_set_vf_spoofchk
4681 * @netdev: network interface device structure
4682 * @vf_id: VF identifier
4683 * @enable: flag to enable or disable feature
4684 *
4685 * Enable or disable VF spoof checking
4686 **/
4687int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4688{
4689 struct i40e_netdev_priv *np = netdev_priv(netdev);
4690 struct i40e_vsi *vsi = np->vsi;
4691 struct i40e_pf *pf = vsi->back;
4692 struct i40e_vsi_context ctxt;
4693 struct i40e_hw *hw = &pf->hw;
4694 struct i40e_vf *vf;
4695 int ret = 0;
4696
4697 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4698 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4699 return -EAGAIN;
4700 }
4701
4702 /* validate the request */
4703 if (vf_id >= pf->num_alloc_vfs) {
4704 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4705 ret = -EINVAL;
4706 goto out;
4707 }
4708
4709 vf = &(pf->vf[vf_id]);
4710 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4711 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4712 vf_id);
4713 ret = -EAGAIN;
4714 goto out;
4715 }
4716
4717 if (enable == vf->spoofchk)
4718 goto out;
4719
4720 vf->spoofchk = enable;
4721 memset(&ctxt, 0, sizeof(ctxt));
4722 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4723 ctxt.pf_num = pf->hw.pf_id;
4724 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4725 if (enable)
4726 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4727 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4728 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4729 if (ret) {
4730 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4731 ret);
4732 ret = -EIO;
4733 }
4734out:
4735 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4736 return ret;
4737}
4738
4739/**
4740 * i40e_ndo_set_vf_trust
4741 * @netdev: network interface device structure of the pf
4742 * @vf_id: VF identifier
4743 * @setting: trust setting
4744 *
4745 * Enable or disable VF trust setting
4746 **/
4747int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4748{
4749 struct i40e_netdev_priv *np = netdev_priv(netdev);
4750 struct i40e_pf *pf = np->vsi->back;
4751 struct i40e_vf *vf;
4752 int ret = 0;
4753
4754 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4755 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4756 return -EAGAIN;
4757 }
4758
4759 /* validate the request */
4760 if (vf_id >= pf->num_alloc_vfs) {
4761 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4762 ret = -EINVAL;
4763 goto out;
4764 }
4765
4766 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4767 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4768 ret = -EINVAL;
4769 goto out;
4770 }
4771
4772 vf = &pf->vf[vf_id];
4773
4774 if (setting == vf->trusted)
4775 goto out;
4776
4777 vf->trusted = setting;
4778
4779 /* request PF to sync mac/vlan filters for the VF */
4780 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
4781 pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
4782
4783 i40e_vc_reset_vf(vf, true);
4784 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4785 vf_id, setting ? "" : "un");
4786
4787 if (vf->adq_enabled) {
4788 if (!vf->trusted) {
4789 dev_info(&pf->pdev->dev,
4790 "VF %u no longer Trusted, deleting all cloud filters\n",
4791 vf_id);
4792 i40e_del_all_cloud_filters(vf);
4793 }
4794 }
4795
4796out:
4797 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4798 return ret;
4799}
4800
4801/**
4802 * i40e_get_vf_stats - populate some stats for the VF
4803 * @netdev: the netdev of the PF
4804 * @vf_id: the host OS identifier (0-127)
4805 * @vf_stats: pointer to the OS memory to be initialized
4806 */
4807int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4808 struct ifla_vf_stats *vf_stats)
4809{
4810 struct i40e_netdev_priv *np = netdev_priv(netdev);
4811 struct i40e_pf *pf = np->vsi->back;
4812 struct i40e_eth_stats *stats;
4813 struct i40e_vsi *vsi;
4814 struct i40e_vf *vf;
4815
4816 /* validate the request */
4817 if (i40e_validate_vf(pf, vf_id))
4818 return -EINVAL;
4819
4820 vf = &pf->vf[vf_id];
4821 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4822 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4823 return -EBUSY;
4824 }
4825
4826 vsi = pf->vsi[vf->lan_vsi_idx];
4827 if (!vsi)
4828 return -EINVAL;
4829
4830 i40e_update_eth_stats(vsi);
4831 stats = &vsi->eth_stats;
4832
4833 memset(vf_stats, 0, sizeof(*vf_stats));
4834
4835 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4836 stats->rx_multicast;
4837 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
4838 stats->tx_multicast;
4839 vf_stats->rx_bytes = stats->rx_bytes;
4840 vf_stats->tx_bytes = stats->tx_bytes;
4841 vf_stats->broadcast = stats->rx_broadcast;
4842 vf_stats->multicast = stats->rx_multicast;
4843 vf_stats->rx_dropped = stats->rx_discards;
4844 vf_stats->tx_dropped = stats->tx_discards;
4845
4846 return 0;
4847}