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1// SPDX-License-Identifier: GPL-2.0
2/*******************************************************************************
3 *
4 * Intel Ethernet Controller XL710 Family Linux Driver
5 * Copyright(c) 2013 - 2016 Intel Corporation.
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms and conditions of the GNU General Public License,
9 * version 2, as published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program. If not, see <http://www.gnu.org/licenses/>.
18 *
19 * The full GNU General Public License is included in this distribution in
20 * the file called "COPYING".
21 *
22 * Contact Information:
23 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *
26 ******************************************************************************/
27
28#include "i40e.h"
29
30/*********************notification routines***********************/
31
32/**
33 * i40e_vc_vf_broadcast
34 * @pf: pointer to the PF structure
35 * @opcode: operation code
36 * @retval: return value
37 * @msg: pointer to the msg buffer
38 * @msglen: msg length
39 *
40 * send a message to all VFs on a given PF
41 **/
42static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
43 enum virtchnl_ops v_opcode,
44 i40e_status v_retval, u8 *msg,
45 u16 msglen)
46{
47 struct i40e_hw *hw = &pf->hw;
48 struct i40e_vf *vf = pf->vf;
49 int i;
50
51 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
52 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
53 /* Not all vfs are enabled so skip the ones that are not */
54 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
55 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
56 continue;
57
58 /* Ignore return value on purpose - a given VF may fail, but
59 * we need to keep going and send to all of them
60 */
61 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
62 msg, msglen, NULL);
63 }
64}
65
66/**
67 * i40e_vc_notify_vf_link_state
68 * @vf: pointer to the VF structure
69 *
70 * send a link status message to a single VF
71 **/
72static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
73{
74 struct virtchnl_pf_event pfe;
75 struct i40e_pf *pf = vf->pf;
76 struct i40e_hw *hw = &pf->hw;
77 struct i40e_link_status *ls = &pf->hw.phy.link_info;
78 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
79
80 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
81 pfe.severity = PF_EVENT_SEVERITY_INFO;
82 if (vf->link_forced) {
83 pfe.event_data.link_event.link_status = vf->link_up;
84 pfe.event_data.link_event.link_speed =
85 (vf->link_up ? VIRTCHNL_LINK_SPEED_40GB : 0);
86 } else {
87 pfe.event_data.link_event.link_status =
88 ls->link_info & I40E_AQ_LINK_UP;
89 pfe.event_data.link_event.link_speed =
90 i40e_virtchnl_link_speed(ls->link_speed);
91 }
92 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
93 0, (u8 *)&pfe, sizeof(pfe), NULL);
94}
95
96/**
97 * i40e_vc_notify_link_state
98 * @pf: pointer to the PF structure
99 *
100 * send a link status message to all VFs on a given PF
101 **/
102void i40e_vc_notify_link_state(struct i40e_pf *pf)
103{
104 int i;
105
106 for (i = 0; i < pf->num_alloc_vfs; i++)
107 i40e_vc_notify_vf_link_state(&pf->vf[i]);
108}
109
110/**
111 * i40e_vc_notify_reset
112 * @pf: pointer to the PF structure
113 *
114 * indicate a pending reset to all VFs on a given PF
115 **/
116void i40e_vc_notify_reset(struct i40e_pf *pf)
117{
118 struct virtchnl_pf_event pfe;
119
120 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
121 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
122 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
123 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
124}
125
126/**
127 * i40e_vc_notify_vf_reset
128 * @vf: pointer to the VF structure
129 *
130 * indicate a pending reset to the given VF
131 **/
132void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
133{
134 struct virtchnl_pf_event pfe;
135 int abs_vf_id;
136
137 /* validate the request */
138 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
139 return;
140
141 /* verify if the VF is in either init or active before proceeding */
142 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
143 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
144 return;
145
146 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
147
148 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
149 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
150 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
151 0, (u8 *)&pfe,
152 sizeof(struct virtchnl_pf_event), NULL);
153}
154/***********************misc routines*****************************/
155
156/**
157 * i40e_vc_disable_vf
158 * @vf: pointer to the VF info
159 *
160 * Disable the VF through a SW reset.
161 **/
162static inline void i40e_vc_disable_vf(struct i40e_vf *vf)
163{
164 int i;
165
166 i40e_vc_notify_vf_reset(vf);
167
168 /* We want to ensure that an actual reset occurs initiated after this
169 * function was called. However, we do not want to wait forever, so
170 * we'll give a reasonable time and print a message if we failed to
171 * ensure a reset.
172 */
173 for (i = 0; i < 20; i++) {
174 if (i40e_reset_vf(vf, false))
175 return;
176 usleep_range(10000, 20000);
177 }
178
179 dev_warn(&vf->pf->pdev->dev,
180 "Failed to initiate reset for VF %d after 200 milliseconds\n",
181 vf->vf_id);
182}
183
184/**
185 * i40e_vc_isvalid_vsi_id
186 * @vf: pointer to the VF info
187 * @vsi_id: VF relative VSI id
188 *
189 * check for the valid VSI id
190 **/
191static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
192{
193 struct i40e_pf *pf = vf->pf;
194 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
195
196 return (vsi && (vsi->vf_id == vf->vf_id));
197}
198
199/**
200 * i40e_vc_isvalid_queue_id
201 * @vf: pointer to the VF info
202 * @vsi_id: vsi id
203 * @qid: vsi relative queue id
204 *
205 * check for the valid queue id
206 **/
207static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
208 u8 qid)
209{
210 struct i40e_pf *pf = vf->pf;
211 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
212
213 return (vsi && (qid < vsi->alloc_queue_pairs));
214}
215
216/**
217 * i40e_vc_isvalid_vector_id
218 * @vf: pointer to the VF info
219 * @vector_id: VF relative vector id
220 *
221 * check for the valid vector id
222 **/
223static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
224{
225 struct i40e_pf *pf = vf->pf;
226
227 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
228}
229
230/***********************vf resource mgmt routines*****************/
231
232/**
233 * i40e_vc_get_pf_queue_id
234 * @vf: pointer to the VF info
235 * @vsi_id: id of VSI as provided by the FW
236 * @vsi_queue_id: vsi relative queue id
237 *
238 * return PF relative queue id
239 **/
240static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
241 u8 vsi_queue_id)
242{
243 struct i40e_pf *pf = vf->pf;
244 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
245 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
246
247 if (!vsi)
248 return pf_queue_id;
249
250 if (le16_to_cpu(vsi->info.mapping_flags) &
251 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
252 pf_queue_id =
253 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
254 else
255 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
256 vsi_queue_id;
257
258 return pf_queue_id;
259}
260
261/**
262 * i40e_get_real_pf_qid
263 * @vf: pointer to the VF info
264 * @vsi_id: vsi id
265 * @queue_id: queue number
266 *
267 * wrapper function to get pf_queue_id handling ADq code as well
268 **/
269static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
270{
271 int i;
272
273 if (vf->adq_enabled) {
274 /* Although VF considers all the queues(can be 1 to 16) as its
275 * own but they may actually belong to different VSIs(up to 4).
276 * We need to find which queues belongs to which VSI.
277 */
278 for (i = 0; i < vf->num_tc; i++) {
279 if (queue_id < vf->ch[i].num_qps) {
280 vsi_id = vf->ch[i].vsi_id;
281 break;
282 }
283 /* find right queue id which is relative to a
284 * given VSI.
285 */
286 queue_id -= vf->ch[i].num_qps;
287 }
288 }
289
290 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
291}
292
293/**
294 * i40e_config_irq_link_list
295 * @vf: pointer to the VF info
296 * @vsi_id: id of VSI as given by the FW
297 * @vecmap: irq map info
298 *
299 * configure irq link list from the map
300 **/
301static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
302 struct virtchnl_vector_map *vecmap)
303{
304 unsigned long linklistmap = 0, tempmap;
305 struct i40e_pf *pf = vf->pf;
306 struct i40e_hw *hw = &pf->hw;
307 u16 vsi_queue_id, pf_queue_id;
308 enum i40e_queue_type qtype;
309 u16 next_q, vector_id, size;
310 u32 reg, reg_idx;
311 u16 itr_idx = 0;
312
313 vector_id = vecmap->vector_id;
314 /* setup the head */
315 if (0 == vector_id)
316 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
317 else
318 reg_idx = I40E_VPINT_LNKLSTN(
319 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
320 (vector_id - 1));
321
322 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
323 /* Special case - No queues mapped on this vector */
324 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
325 goto irq_list_done;
326 }
327 tempmap = vecmap->rxq_map;
328 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
329 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
330 vsi_queue_id));
331 }
332
333 tempmap = vecmap->txq_map;
334 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
335 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
336 vsi_queue_id + 1));
337 }
338
339 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
340 next_q = find_first_bit(&linklistmap, size);
341 if (unlikely(next_q == size))
342 goto irq_list_done;
343
344 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
345 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
346 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
347 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
348
349 wr32(hw, reg_idx, reg);
350
351 while (next_q < size) {
352 switch (qtype) {
353 case I40E_QUEUE_TYPE_RX:
354 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
355 itr_idx = vecmap->rxitr_idx;
356 break;
357 case I40E_QUEUE_TYPE_TX:
358 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
359 itr_idx = vecmap->txitr_idx;
360 break;
361 default:
362 break;
363 }
364
365 next_q = find_next_bit(&linklistmap, size, next_q + 1);
366 if (next_q < size) {
367 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
368 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
369 pf_queue_id = i40e_get_real_pf_qid(vf,
370 vsi_id,
371 vsi_queue_id);
372 } else {
373 pf_queue_id = I40E_QUEUE_END_OF_LIST;
374 qtype = 0;
375 }
376
377 /* format for the RQCTL & TQCTL regs is same */
378 reg = (vector_id) |
379 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
380 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
381 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
382 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
383 wr32(hw, reg_idx, reg);
384 }
385
386 /* if the vf is running in polling mode and using interrupt zero,
387 * need to disable auto-mask on enabling zero interrupt for VFs.
388 */
389 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
390 (vector_id == 0)) {
391 reg = rd32(hw, I40E_GLINT_CTL);
392 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
393 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
394 wr32(hw, I40E_GLINT_CTL, reg);
395 }
396 }
397
398irq_list_done:
399 i40e_flush(hw);
400}
401
402/**
403 * i40e_release_iwarp_qvlist
404 * @vf: pointer to the VF.
405 *
406 **/
407static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
408{
409 struct i40e_pf *pf = vf->pf;
410 struct virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
411 u32 msix_vf;
412 u32 i;
413
414 if (!vf->qvlist_info)
415 return;
416
417 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
418 for (i = 0; i < qvlist_info->num_vectors; i++) {
419 struct virtchnl_iwarp_qv_info *qv_info;
420 u32 next_q_index, next_q_type;
421 struct i40e_hw *hw = &pf->hw;
422 u32 v_idx, reg_idx, reg;
423
424 qv_info = &qvlist_info->qv_info[i];
425 if (!qv_info)
426 continue;
427 v_idx = qv_info->v_idx;
428 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
429 /* Figure out the queue after CEQ and make that the
430 * first queue.
431 */
432 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
433 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
434 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
435 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
436 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
437 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
438
439 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
440 reg = (next_q_index &
441 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
442 (next_q_type <<
443 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
444
445 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
446 }
447 }
448 kfree(vf->qvlist_info);
449 vf->qvlist_info = NULL;
450}
451
452/**
453 * i40e_config_iwarp_qvlist
454 * @vf: pointer to the VF info
455 * @qvlist_info: queue and vector list
456 *
457 * Return 0 on success or < 0 on error
458 **/
459static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
460 struct virtchnl_iwarp_qvlist_info *qvlist_info)
461{
462 struct i40e_pf *pf = vf->pf;
463 struct i40e_hw *hw = &pf->hw;
464 struct virtchnl_iwarp_qv_info *qv_info;
465 u32 v_idx, i, reg_idx, reg;
466 u32 next_q_idx, next_q_type;
467 u32 msix_vf, size;
468
469 size = sizeof(struct virtchnl_iwarp_qvlist_info) +
470 (sizeof(struct virtchnl_iwarp_qv_info) *
471 (qvlist_info->num_vectors - 1));
472 vf->qvlist_info = kzalloc(size, GFP_KERNEL);
473 if (!vf->qvlist_info)
474 return -ENOMEM;
475
476 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
477
478 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
479 for (i = 0; i < qvlist_info->num_vectors; i++) {
480 qv_info = &qvlist_info->qv_info[i];
481 if (!qv_info)
482 continue;
483 v_idx = qv_info->v_idx;
484
485 /* Validate vector id belongs to this vf */
486 if (!i40e_vc_isvalid_vector_id(vf, v_idx))
487 goto err;
488
489 vf->qvlist_info->qv_info[i] = *qv_info;
490
491 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
492 /* We might be sharing the interrupt, so get the first queue
493 * index and type, push it down the list by adding the new
494 * queue on top. Also link it with the new queue in CEQCTL.
495 */
496 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
497 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
498 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
499 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
500 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
501
502 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
503 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
504 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
505 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
506 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
507 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
508 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
509 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
510
511 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
512 reg = (qv_info->ceq_idx &
513 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
514 (I40E_QUEUE_TYPE_PE_CEQ <<
515 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
516 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
517 }
518
519 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
520 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
521 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
522 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
523
524 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
525 }
526 }
527
528 return 0;
529err:
530 kfree(vf->qvlist_info);
531 vf->qvlist_info = NULL;
532 return -EINVAL;
533}
534
535/**
536 * i40e_config_vsi_tx_queue
537 * @vf: pointer to the VF info
538 * @vsi_id: id of VSI as provided by the FW
539 * @vsi_queue_id: vsi relative queue index
540 * @info: config. info
541 *
542 * configure tx queue
543 **/
544static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
545 u16 vsi_queue_id,
546 struct virtchnl_txq_info *info)
547{
548 struct i40e_pf *pf = vf->pf;
549 struct i40e_hw *hw = &pf->hw;
550 struct i40e_hmc_obj_txq tx_ctx;
551 struct i40e_vsi *vsi;
552 u16 pf_queue_id;
553 u32 qtx_ctl;
554 int ret = 0;
555
556 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
557 ret = -ENOENT;
558 goto error_context;
559 }
560 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
561 vsi = i40e_find_vsi_from_id(pf, vsi_id);
562 if (!vsi) {
563 ret = -ENOENT;
564 goto error_context;
565 }
566
567 /* clear the context structure first */
568 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
569
570 /* only set the required fields */
571 tx_ctx.base = info->dma_ring_addr / 128;
572 tx_ctx.qlen = info->ring_len;
573 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
574 tx_ctx.rdylist_act = 0;
575 tx_ctx.head_wb_ena = info->headwb_enabled;
576 tx_ctx.head_wb_addr = info->dma_headwb_addr;
577
578 /* clear the context in the HMC */
579 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
580 if (ret) {
581 dev_err(&pf->pdev->dev,
582 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
583 pf_queue_id, ret);
584 ret = -ENOENT;
585 goto error_context;
586 }
587
588 /* set the context in the HMC */
589 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
590 if (ret) {
591 dev_err(&pf->pdev->dev,
592 "Failed to set VF LAN Tx queue context %d error: %d\n",
593 pf_queue_id, ret);
594 ret = -ENOENT;
595 goto error_context;
596 }
597
598 /* associate this queue with the PCI VF function */
599 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
600 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
601 & I40E_QTX_CTL_PF_INDX_MASK);
602 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
603 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
604 & I40E_QTX_CTL_VFVM_INDX_MASK);
605 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
606 i40e_flush(hw);
607
608error_context:
609 return ret;
610}
611
612/**
613 * i40e_config_vsi_rx_queue
614 * @vf: pointer to the VF info
615 * @vsi_id: id of VSI as provided by the FW
616 * @vsi_queue_id: vsi relative queue index
617 * @info: config. info
618 *
619 * configure rx queue
620 **/
621static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
622 u16 vsi_queue_id,
623 struct virtchnl_rxq_info *info)
624{
625 struct i40e_pf *pf = vf->pf;
626 struct i40e_hw *hw = &pf->hw;
627 struct i40e_hmc_obj_rxq rx_ctx;
628 u16 pf_queue_id;
629 int ret = 0;
630
631 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
632
633 /* clear the context structure first */
634 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
635
636 /* only set the required fields */
637 rx_ctx.base = info->dma_ring_addr / 128;
638 rx_ctx.qlen = info->ring_len;
639
640 if (info->splithdr_enabled) {
641 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
642 I40E_RX_SPLIT_IP |
643 I40E_RX_SPLIT_TCP_UDP |
644 I40E_RX_SPLIT_SCTP;
645 /* header length validation */
646 if (info->hdr_size > ((2 * 1024) - 64)) {
647 ret = -EINVAL;
648 goto error_param;
649 }
650 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
651
652 /* set split mode 10b */
653 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
654 }
655
656 /* databuffer length validation */
657 if (info->databuffer_size > ((16 * 1024) - 128)) {
658 ret = -EINVAL;
659 goto error_param;
660 }
661 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
662
663 /* max pkt. length validation */
664 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
665 ret = -EINVAL;
666 goto error_param;
667 }
668 rx_ctx.rxmax = info->max_pkt_size;
669
670 /* enable 32bytes desc always */
671 rx_ctx.dsize = 1;
672
673 /* default values */
674 rx_ctx.lrxqthresh = 1;
675 rx_ctx.crcstrip = 1;
676 rx_ctx.prefena = 1;
677 rx_ctx.l2tsel = 1;
678
679 /* clear the context in the HMC */
680 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
681 if (ret) {
682 dev_err(&pf->pdev->dev,
683 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
684 pf_queue_id, ret);
685 ret = -ENOENT;
686 goto error_param;
687 }
688
689 /* set the context in the HMC */
690 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
691 if (ret) {
692 dev_err(&pf->pdev->dev,
693 "Failed to set VF LAN Rx queue context %d error: %d\n",
694 pf_queue_id, ret);
695 ret = -ENOENT;
696 goto error_param;
697 }
698
699error_param:
700 return ret;
701}
702
703/**
704 * i40e_alloc_vsi_res
705 * @vf: pointer to the VF info
706 * @idx: VSI index, applies only for ADq mode, zero otherwise
707 *
708 * alloc VF vsi context & resources
709 **/
710static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
711{
712 struct i40e_mac_filter *f = NULL;
713 struct i40e_pf *pf = vf->pf;
714 struct i40e_vsi *vsi;
715 u64 max_tx_rate = 0;
716 int ret = 0;
717
718 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid,
719 vf->vf_id);
720
721 if (!vsi) {
722 dev_err(&pf->pdev->dev,
723 "add vsi failed for VF %d, aq_err %d\n",
724 vf->vf_id, pf->hw.aq.asq_last_status);
725 ret = -ENOENT;
726 goto error_alloc_vsi_res;
727 }
728
729 if (!idx) {
730 u64 hena = i40e_pf_get_default_rss_hena(pf);
731 u8 broadcast[ETH_ALEN];
732
733 vf->lan_vsi_idx = vsi->idx;
734 vf->lan_vsi_id = vsi->id;
735 /* If the port VLAN has been configured and then the
736 * VF driver was removed then the VSI port VLAN
737 * configuration was destroyed. Check if there is
738 * a port VLAN and restore the VSI configuration if
739 * needed.
740 */
741 if (vf->port_vlan_id)
742 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
743
744 spin_lock_bh(&vsi->mac_filter_hash_lock);
745 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
746 f = i40e_add_mac_filter(vsi,
747 vf->default_lan_addr.addr);
748 if (!f)
749 dev_info(&pf->pdev->dev,
750 "Could not add MAC filter %pM for VF %d\n",
751 vf->default_lan_addr.addr, vf->vf_id);
752 }
753 eth_broadcast_addr(broadcast);
754 f = i40e_add_mac_filter(vsi, broadcast);
755 if (!f)
756 dev_info(&pf->pdev->dev,
757 "Could not allocate VF broadcast filter\n");
758 spin_unlock_bh(&vsi->mac_filter_hash_lock);
759 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
760 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
761 /* program mac filter only for VF VSI */
762 ret = i40e_sync_vsi_filters(vsi);
763 if (ret)
764 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
765 }
766
767 /* storing VSI index and id for ADq and don't apply the mac filter */
768 if (vf->adq_enabled) {
769 vf->ch[idx].vsi_idx = vsi->idx;
770 vf->ch[idx].vsi_id = vsi->id;
771 }
772
773 /* Set VF bandwidth if specified */
774 if (vf->tx_rate) {
775 max_tx_rate = vf->tx_rate;
776 } else if (vf->ch[idx].max_tx_rate) {
777 max_tx_rate = vf->ch[idx].max_tx_rate;
778 }
779
780 if (max_tx_rate) {
781 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
782 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
783 max_tx_rate, 0, NULL);
784 if (ret)
785 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
786 vf->vf_id, ret);
787 }
788
789error_alloc_vsi_res:
790 return ret;
791}
792
793/**
794 * i40e_map_pf_queues_to_vsi
795 * @vf: pointer to the VF info
796 *
797 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
798 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
799 **/
800static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
801{
802 struct i40e_pf *pf = vf->pf;
803 struct i40e_hw *hw = &pf->hw;
804 u32 reg, num_tc = 1; /* VF has at least one traffic class */
805 u16 vsi_id, qps;
806 int i, j;
807
808 if (vf->adq_enabled)
809 num_tc = vf->num_tc;
810
811 for (i = 0; i < num_tc; i++) {
812 if (vf->adq_enabled) {
813 qps = vf->ch[i].num_qps;
814 vsi_id = vf->ch[i].vsi_id;
815 } else {
816 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
817 vsi_id = vf->lan_vsi_id;
818 }
819
820 for (j = 0; j < 7; j++) {
821 if (j * 2 >= qps) {
822 /* end of list */
823 reg = 0x07FF07FF;
824 } else {
825 u16 qid = i40e_vc_get_pf_queue_id(vf,
826 vsi_id,
827 j * 2);
828 reg = qid;
829 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
830 (j * 2) + 1);
831 reg |= qid << 16;
832 }
833 i40e_write_rx_ctl(hw,
834 I40E_VSILAN_QTABLE(j, vsi_id),
835 reg);
836 }
837 }
838}
839
840/**
841 * i40e_map_pf_to_vf_queues
842 * @vf: pointer to the VF info
843 *
844 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
845 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
846 **/
847static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
848{
849 struct i40e_pf *pf = vf->pf;
850 struct i40e_hw *hw = &pf->hw;
851 u32 reg, total_qps = 0;
852 u32 qps, num_tc = 1; /* VF has at least one traffic class */
853 u16 vsi_id, qid;
854 int i, j;
855
856 if (vf->adq_enabled)
857 num_tc = vf->num_tc;
858
859 for (i = 0; i < num_tc; i++) {
860 if (vf->adq_enabled) {
861 qps = vf->ch[i].num_qps;
862 vsi_id = vf->ch[i].vsi_id;
863 } else {
864 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
865 vsi_id = vf->lan_vsi_id;
866 }
867
868 for (j = 0; j < qps; j++) {
869 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
870
871 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
872 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
873 reg);
874 total_qps++;
875 }
876 }
877}
878
879/**
880 * i40e_enable_vf_mappings
881 * @vf: pointer to the VF info
882 *
883 * enable VF mappings
884 **/
885static void i40e_enable_vf_mappings(struct i40e_vf *vf)
886{
887 struct i40e_pf *pf = vf->pf;
888 struct i40e_hw *hw = &pf->hw;
889 u32 reg;
890
891 /* Tell the hardware we're using noncontiguous mapping. HW requires
892 * that VF queues be mapped using this method, even when they are
893 * contiguous in real life
894 */
895 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
896 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
897
898 /* enable VF vplan_qtable mappings */
899 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
900 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
901
902 i40e_map_pf_to_vf_queues(vf);
903 i40e_map_pf_queues_to_vsi(vf);
904
905 i40e_flush(hw);
906}
907
908/**
909 * i40e_disable_vf_mappings
910 * @vf: pointer to the VF info
911 *
912 * disable VF mappings
913 **/
914static void i40e_disable_vf_mappings(struct i40e_vf *vf)
915{
916 struct i40e_pf *pf = vf->pf;
917 struct i40e_hw *hw = &pf->hw;
918 int i;
919
920 /* disable qp mappings */
921 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
922 for (i = 0; i < I40E_MAX_VSI_QP; i++)
923 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
924 I40E_QUEUE_END_OF_LIST);
925 i40e_flush(hw);
926}
927
928/**
929 * i40e_free_vf_res
930 * @vf: pointer to the VF info
931 *
932 * free VF resources
933 **/
934static void i40e_free_vf_res(struct i40e_vf *vf)
935{
936 struct i40e_pf *pf = vf->pf;
937 struct i40e_hw *hw = &pf->hw;
938 u32 reg_idx, reg;
939 int i, j, msix_vf;
940
941 /* Start by disabling VF's configuration API to prevent the OS from
942 * accessing the VF's VSI after it's freed / invalidated.
943 */
944 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
945
946 /* It's possible the VF had requeuested more queues than the default so
947 * do the accounting here when we're about to free them.
948 */
949 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
950 pf->queues_left += vf->num_queue_pairs -
951 I40E_DEFAULT_QUEUES_PER_VF;
952 }
953
954 /* free vsi & disconnect it from the parent uplink */
955 if (vf->lan_vsi_idx) {
956 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
957 vf->lan_vsi_idx = 0;
958 vf->lan_vsi_id = 0;
959 vf->num_mac = 0;
960 }
961
962 /* do the accounting and remove additional ADq VSI's */
963 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
964 for (j = 0; j < vf->num_tc; j++) {
965 /* At this point VSI0 is already released so don't
966 * release it again and only clear their values in
967 * structure variables
968 */
969 if (j)
970 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
971 vf->ch[j].vsi_idx = 0;
972 vf->ch[j].vsi_id = 0;
973 }
974 }
975 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
976
977 /* disable interrupts so the VF starts in a known state */
978 for (i = 0; i < msix_vf; i++) {
979 /* format is same for both registers */
980 if (0 == i)
981 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
982 else
983 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
984 (vf->vf_id))
985 + (i - 1));
986 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
987 i40e_flush(hw);
988 }
989
990 /* clear the irq settings */
991 for (i = 0; i < msix_vf; i++) {
992 /* format is same for both registers */
993 if (0 == i)
994 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
995 else
996 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
997 (vf->vf_id))
998 + (i - 1));
999 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1000 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1001 wr32(hw, reg_idx, reg);
1002 i40e_flush(hw);
1003 }
1004 /* reset some of the state variables keeping track of the resources */
1005 vf->num_queue_pairs = 0;
1006 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1007 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1008}
1009
1010/**
1011 * i40e_alloc_vf_res
1012 * @vf: pointer to the VF info
1013 *
1014 * allocate VF resources
1015 **/
1016static int i40e_alloc_vf_res(struct i40e_vf *vf)
1017{
1018 struct i40e_pf *pf = vf->pf;
1019 int total_queue_pairs = 0;
1020 int ret, idx;
1021
1022 if (vf->num_req_queues &&
1023 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1024 pf->num_vf_qps = vf->num_req_queues;
1025 else
1026 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1027
1028 /* allocate hw vsi context & associated resources */
1029 ret = i40e_alloc_vsi_res(vf, 0);
1030 if (ret)
1031 goto error_alloc;
1032 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1033
1034 /* allocate additional VSIs based on tc information for ADq */
1035 if (vf->adq_enabled) {
1036 if (pf->queues_left >=
1037 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1038 /* TC 0 always belongs to VF VSI */
1039 for (idx = 1; idx < vf->num_tc; idx++) {
1040 ret = i40e_alloc_vsi_res(vf, idx);
1041 if (ret)
1042 goto error_alloc;
1043 }
1044 /* send correct number of queues */
1045 total_queue_pairs = I40E_MAX_VF_QUEUES;
1046 } else {
1047 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1048 vf->vf_id);
1049 vf->adq_enabled = false;
1050 }
1051 }
1052
1053 /* We account for each VF to get a default number of queue pairs. If
1054 * the VF has now requested more, we need to account for that to make
1055 * certain we never request more queues than we actually have left in
1056 * HW.
1057 */
1058 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1059 pf->queues_left -=
1060 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1061
1062 if (vf->trusted)
1063 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1064 else
1065 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1066
1067 /* store the total qps number for the runtime
1068 * VF req validation
1069 */
1070 vf->num_queue_pairs = total_queue_pairs;
1071
1072 /* VF is now completely initialized */
1073 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1074
1075error_alloc:
1076 if (ret)
1077 i40e_free_vf_res(vf);
1078
1079 return ret;
1080}
1081
1082#define VF_DEVICE_STATUS 0xAA
1083#define VF_TRANS_PENDING_MASK 0x20
1084/**
1085 * i40e_quiesce_vf_pci
1086 * @vf: pointer to the VF structure
1087 *
1088 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1089 * if the transactions never clear.
1090 **/
1091static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1092{
1093 struct i40e_pf *pf = vf->pf;
1094 struct i40e_hw *hw = &pf->hw;
1095 int vf_abs_id, i;
1096 u32 reg;
1097
1098 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1099
1100 wr32(hw, I40E_PF_PCI_CIAA,
1101 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1102 for (i = 0; i < 100; i++) {
1103 reg = rd32(hw, I40E_PF_PCI_CIAD);
1104 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1105 return 0;
1106 udelay(1);
1107 }
1108 return -EIO;
1109}
1110
1111/**
1112 * i40e_trigger_vf_reset
1113 * @vf: pointer to the VF structure
1114 * @flr: VFLR was issued or not
1115 *
1116 * Trigger hardware to start a reset for a particular VF. Expects the caller
1117 * to wait the proper amount of time to allow hardware to reset the VF before
1118 * it cleans up and restores VF functionality.
1119 **/
1120static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1121{
1122 struct i40e_pf *pf = vf->pf;
1123 struct i40e_hw *hw = &pf->hw;
1124 u32 reg, reg_idx, bit_idx;
1125
1126 /* warn the VF */
1127 clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1128
1129 /* Disable VF's configuration API during reset. The flag is re-enabled
1130 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1131 * It's normally disabled in i40e_free_vf_res(), but it's safer
1132 * to do it earlier to give some time to finish to any VF config
1133 * functions that may still be running at this point.
1134 */
1135 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1136
1137 /* In the case of a VFLR, the HW has already reset the VF and we
1138 * just need to clean up, so don't hit the VFRTRIG register.
1139 */
1140 if (!flr) {
1141 /* reset VF using VPGEN_VFRTRIG reg */
1142 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1143 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1144 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1145 i40e_flush(hw);
1146 }
1147 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1148 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1149 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1150 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1151 i40e_flush(hw);
1152
1153 if (i40e_quiesce_vf_pci(vf))
1154 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1155 vf->vf_id);
1156}
1157
1158/**
1159 * i40e_cleanup_reset_vf
1160 * @vf: pointer to the VF structure
1161 *
1162 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1163 * have verified whether the reset is finished properly, and ensure the
1164 * minimum amount of wait time has passed.
1165 **/
1166static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1167{
1168 struct i40e_pf *pf = vf->pf;
1169 struct i40e_hw *hw = &pf->hw;
1170 u32 reg;
1171
1172 /* free VF resources to begin resetting the VSI state */
1173 i40e_free_vf_res(vf);
1174
1175 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1176 * By doing this we allow HW to access VF memory at any point. If we
1177 * did it any sooner, HW could access memory while it was being freed
1178 * in i40e_free_vf_res(), causing an IOMMU fault.
1179 *
1180 * On the other hand, this needs to be done ASAP, because the VF driver
1181 * is waiting for this to happen and may report a timeout. It's
1182 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1183 * it.
1184 */
1185 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1186 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1187 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1188
1189 /* reallocate VF resources to finish resetting the VSI state */
1190 if (!i40e_alloc_vf_res(vf)) {
1191 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1192 i40e_enable_vf_mappings(vf);
1193 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1194 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1195 /* Do not notify the client during VF init */
1196 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1197 &vf->vf_states))
1198 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1199 vf->num_vlan = 0;
1200 }
1201
1202 /* Tell the VF driver the reset is done. This needs to be done only
1203 * after VF has been fully initialized, because the VF driver may
1204 * request resources immediately after setting this flag.
1205 */
1206 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1207}
1208
1209/**
1210 * i40e_reset_vf
1211 * @vf: pointer to the VF structure
1212 * @flr: VFLR was issued or not
1213 *
1214 * Returns true if the VF is reset, false otherwise.
1215 **/
1216bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1217{
1218 struct i40e_pf *pf = vf->pf;
1219 struct i40e_hw *hw = &pf->hw;
1220 bool rsd = false;
1221 u32 reg;
1222 int i;
1223
1224 /* If the VFs have been disabled, this means something else is
1225 * resetting the VF, so we shouldn't continue.
1226 */
1227 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1228 return false;
1229
1230 i40e_trigger_vf_reset(vf, flr);
1231
1232 /* poll VPGEN_VFRSTAT reg to make sure
1233 * that reset is complete
1234 */
1235 for (i = 0; i < 10; i++) {
1236 /* VF reset requires driver to first reset the VF and then
1237 * poll the status register to make sure that the reset
1238 * completed successfully. Due to internal HW FIFO flushes,
1239 * we must wait 10ms before the register will be valid.
1240 */
1241 usleep_range(10000, 20000);
1242 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1243 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1244 rsd = true;
1245 break;
1246 }
1247 }
1248
1249 if (flr)
1250 usleep_range(10000, 20000);
1251
1252 if (!rsd)
1253 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1254 vf->vf_id);
1255 usleep_range(10000, 20000);
1256
1257 /* On initial reset, we don't have any queues to disable */
1258 if (vf->lan_vsi_idx != 0)
1259 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1260
1261 i40e_cleanup_reset_vf(vf);
1262
1263 i40e_flush(hw);
1264 clear_bit(__I40E_VF_DISABLE, pf->state);
1265
1266 return true;
1267}
1268
1269/**
1270 * i40e_reset_all_vfs
1271 * @pf: pointer to the PF structure
1272 * @flr: VFLR was issued or not
1273 *
1274 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1275 * VF, then do all the waiting in one chunk, and finally finish restoring each
1276 * VF after the wait. This is useful during PF routines which need to reset
1277 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1278 *
1279 * Returns true if any VFs were reset, and false otherwise.
1280 **/
1281bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1282{
1283 struct i40e_hw *hw = &pf->hw;
1284 struct i40e_vf *vf;
1285 int i, v;
1286 u32 reg;
1287
1288 /* If we don't have any VFs, then there is nothing to reset */
1289 if (!pf->num_alloc_vfs)
1290 return false;
1291
1292 /* If VFs have been disabled, there is no need to reset */
1293 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1294 return false;
1295
1296 /* Begin reset on all VFs at once */
1297 for (v = 0; v < pf->num_alloc_vfs; v++)
1298 i40e_trigger_vf_reset(&pf->vf[v], flr);
1299
1300 /* HW requires some time to make sure it can flush the FIFO for a VF
1301 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1302 * sequence to make sure that it has completed. We'll keep track of
1303 * the VFs using a simple iterator that increments once that VF has
1304 * finished resetting.
1305 */
1306 for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
1307 usleep_range(10000, 20000);
1308
1309 /* Check each VF in sequence, beginning with the VF to fail
1310 * the previous check.
1311 */
1312 while (v < pf->num_alloc_vfs) {
1313 vf = &pf->vf[v];
1314 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1315 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1316 break;
1317
1318 /* If the current VF has finished resetting, move on
1319 * to the next VF in sequence.
1320 */
1321 v++;
1322 }
1323 }
1324
1325 if (flr)
1326 usleep_range(10000, 20000);
1327
1328 /* Display a warning if at least one VF didn't manage to reset in
1329 * time, but continue on with the operation.
1330 */
1331 if (v < pf->num_alloc_vfs)
1332 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1333 pf->vf[v].vf_id);
1334 usleep_range(10000, 20000);
1335
1336 /* Begin disabling all the rings associated with VFs, but do not wait
1337 * between each VF.
1338 */
1339 for (v = 0; v < pf->num_alloc_vfs; v++) {
1340 /* On initial reset, we don't have any queues to disable */
1341 if (pf->vf[v].lan_vsi_idx == 0)
1342 continue;
1343
1344 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[v].lan_vsi_idx]);
1345 }
1346
1347 /* Now that we've notified HW to disable all of the VF rings, wait
1348 * until they finish.
1349 */
1350 for (v = 0; v < pf->num_alloc_vfs; v++) {
1351 /* On initial reset, we don't have any queues to disable */
1352 if (pf->vf[v].lan_vsi_idx == 0)
1353 continue;
1354
1355 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[v].lan_vsi_idx]);
1356 }
1357
1358 /* Hw may need up to 50ms to finish disabling the RX queues. We
1359 * minimize the wait by delaying only once for all VFs.
1360 */
1361 mdelay(50);
1362
1363 /* Finish the reset on each VF */
1364 for (v = 0; v < pf->num_alloc_vfs; v++)
1365 i40e_cleanup_reset_vf(&pf->vf[v]);
1366
1367 i40e_flush(hw);
1368 clear_bit(__I40E_VF_DISABLE, pf->state);
1369
1370 return true;
1371}
1372
1373/**
1374 * i40e_free_vfs
1375 * @pf: pointer to the PF structure
1376 *
1377 * free VF resources
1378 **/
1379void i40e_free_vfs(struct i40e_pf *pf)
1380{
1381 struct i40e_hw *hw = &pf->hw;
1382 u32 reg_idx, bit_idx;
1383 int i, tmp, vf_id;
1384
1385 if (!pf->vf)
1386 return;
1387 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1388 usleep_range(1000, 2000);
1389
1390 i40e_notify_client_of_vf_enable(pf, 0);
1391
1392 /* Amortize wait time by stopping all VFs at the same time */
1393 for (i = 0; i < pf->num_alloc_vfs; i++) {
1394 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1395 continue;
1396
1397 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1398 }
1399
1400 for (i = 0; i < pf->num_alloc_vfs; i++) {
1401 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1402 continue;
1403
1404 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1405 }
1406
1407 /* Disable IOV before freeing resources. This lets any VF drivers
1408 * running in the host get themselves cleaned up before we yank
1409 * the carpet out from underneath their feet.
1410 */
1411 if (!pci_vfs_assigned(pf->pdev))
1412 pci_disable_sriov(pf->pdev);
1413 else
1414 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1415
1416 /* free up VF resources */
1417 tmp = pf->num_alloc_vfs;
1418 pf->num_alloc_vfs = 0;
1419 for (i = 0; i < tmp; i++) {
1420 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1421 i40e_free_vf_res(&pf->vf[i]);
1422 /* disable qp mappings */
1423 i40e_disable_vf_mappings(&pf->vf[i]);
1424 }
1425
1426 kfree(pf->vf);
1427 pf->vf = NULL;
1428
1429 /* This check is for when the driver is unloaded while VFs are
1430 * assigned. Setting the number of VFs to 0 through sysfs is caught
1431 * before this function ever gets called.
1432 */
1433 if (!pci_vfs_assigned(pf->pdev)) {
1434 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1435 * work correctly when SR-IOV gets re-enabled.
1436 */
1437 for (vf_id = 0; vf_id < tmp; vf_id++) {
1438 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1439 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1440 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1441 }
1442 }
1443 clear_bit(__I40E_VF_DISABLE, pf->state);
1444}
1445
1446#ifdef CONFIG_PCI_IOV
1447/**
1448 * i40e_alloc_vfs
1449 * @pf: pointer to the PF structure
1450 * @num_alloc_vfs: number of VFs to allocate
1451 *
1452 * allocate VF resources
1453 **/
1454int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1455{
1456 struct i40e_vf *vfs;
1457 int i, ret = 0;
1458
1459 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1460 i40e_irq_dynamic_disable_icr0(pf);
1461
1462 /* Check to see if we're just allocating resources for extant VFs */
1463 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1464 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1465 if (ret) {
1466 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1467 pf->num_alloc_vfs = 0;
1468 goto err_iov;
1469 }
1470 }
1471 /* allocate memory */
1472 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1473 if (!vfs) {
1474 ret = -ENOMEM;
1475 goto err_alloc;
1476 }
1477 pf->vf = vfs;
1478
1479 /* apply default profile */
1480 for (i = 0; i < num_alloc_vfs; i++) {
1481 vfs[i].pf = pf;
1482 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1483 vfs[i].vf_id = i;
1484
1485 /* assign default capabilities */
1486 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1487 vfs[i].spoofchk = true;
1488
1489 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1490
1491 }
1492 pf->num_alloc_vfs = num_alloc_vfs;
1493
1494 /* VF resources get allocated during reset */
1495 i40e_reset_all_vfs(pf, false);
1496
1497 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1498
1499err_alloc:
1500 if (ret)
1501 i40e_free_vfs(pf);
1502err_iov:
1503 /* Re-enable interrupt 0. */
1504 i40e_irq_dynamic_enable_icr0(pf);
1505 return ret;
1506}
1507
1508#endif
1509/**
1510 * i40e_pci_sriov_enable
1511 * @pdev: pointer to a pci_dev structure
1512 * @num_vfs: number of VFs to allocate
1513 *
1514 * Enable or change the number of VFs
1515 **/
1516static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1517{
1518#ifdef CONFIG_PCI_IOV
1519 struct i40e_pf *pf = pci_get_drvdata(pdev);
1520 int pre_existing_vfs = pci_num_vf(pdev);
1521 int err = 0;
1522
1523 if (test_bit(__I40E_TESTING, pf->state)) {
1524 dev_warn(&pdev->dev,
1525 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1526 err = -EPERM;
1527 goto err_out;
1528 }
1529
1530 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1531 i40e_free_vfs(pf);
1532 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1533 goto out;
1534
1535 if (num_vfs > pf->num_req_vfs) {
1536 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1537 num_vfs, pf->num_req_vfs);
1538 err = -EPERM;
1539 goto err_out;
1540 }
1541
1542 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1543 err = i40e_alloc_vfs(pf, num_vfs);
1544 if (err) {
1545 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1546 goto err_out;
1547 }
1548
1549out:
1550 return num_vfs;
1551
1552err_out:
1553 return err;
1554#endif
1555 return 0;
1556}
1557
1558/**
1559 * i40e_pci_sriov_configure
1560 * @pdev: pointer to a pci_dev structure
1561 * @num_vfs: number of VFs to allocate
1562 *
1563 * Enable or change the number of VFs. Called when the user updates the number
1564 * of VFs in sysfs.
1565 **/
1566int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1567{
1568 struct i40e_pf *pf = pci_get_drvdata(pdev);
1569
1570 if (num_vfs) {
1571 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1572 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1573 i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG);
1574 }
1575 return i40e_pci_sriov_enable(pdev, num_vfs);
1576 }
1577
1578 if (!pci_vfs_assigned(pf->pdev)) {
1579 i40e_free_vfs(pf);
1580 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1581 i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG);
1582 } else {
1583 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1584 return -EINVAL;
1585 }
1586 return 0;
1587}
1588
1589/***********************virtual channel routines******************/
1590
1591/**
1592 * i40e_vc_send_msg_to_vf
1593 * @vf: pointer to the VF info
1594 * @v_opcode: virtual channel opcode
1595 * @v_retval: virtual channel return value
1596 * @msg: pointer to the msg buffer
1597 * @msglen: msg length
1598 *
1599 * send msg to VF
1600 **/
1601static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1602 u32 v_retval, u8 *msg, u16 msglen)
1603{
1604 struct i40e_pf *pf;
1605 struct i40e_hw *hw;
1606 int abs_vf_id;
1607 i40e_status aq_ret;
1608
1609 /* validate the request */
1610 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1611 return -EINVAL;
1612
1613 pf = vf->pf;
1614 hw = &pf->hw;
1615 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1616
1617 /* single place to detect unsuccessful return values */
1618 if (v_retval) {
1619 vf->num_invalid_msgs++;
1620 dev_info(&pf->pdev->dev, "VF %d failed opcode %d, retval: %d\n",
1621 vf->vf_id, v_opcode, v_retval);
1622 if (vf->num_invalid_msgs >
1623 I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
1624 dev_err(&pf->pdev->dev,
1625 "Number of invalid messages exceeded for VF %d\n",
1626 vf->vf_id);
1627 dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
1628 set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1629 }
1630 } else {
1631 vf->num_valid_msgs++;
1632 /* reset the invalid counter, if a valid message is received. */
1633 vf->num_invalid_msgs = 0;
1634 }
1635
1636 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1637 msg, msglen, NULL);
1638 if (aq_ret) {
1639 dev_info(&pf->pdev->dev,
1640 "Unable to send the message to VF %d aq_err %d\n",
1641 vf->vf_id, pf->hw.aq.asq_last_status);
1642 return -EIO;
1643 }
1644
1645 return 0;
1646}
1647
1648/**
1649 * i40e_vc_send_resp_to_vf
1650 * @vf: pointer to the VF info
1651 * @opcode: operation code
1652 * @retval: return value
1653 *
1654 * send resp msg to VF
1655 **/
1656static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1657 enum virtchnl_ops opcode,
1658 i40e_status retval)
1659{
1660 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1661}
1662
1663/**
1664 * i40e_vc_get_version_msg
1665 * @vf: pointer to the VF info
1666 *
1667 * called from the VF to request the API version used by the PF
1668 **/
1669static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
1670{
1671 struct virtchnl_version_info info = {
1672 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
1673 };
1674
1675 vf->vf_ver = *(struct virtchnl_version_info *)msg;
1676 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
1677 if (VF_IS_V10(&vf->vf_ver))
1678 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
1679 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
1680 I40E_SUCCESS, (u8 *)&info,
1681 sizeof(struct virtchnl_version_info));
1682}
1683
1684/**
1685 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
1686 * @vf: pointer to VF structure
1687 **/
1688static void i40e_del_qch(struct i40e_vf *vf)
1689{
1690 struct i40e_pf *pf = vf->pf;
1691 int i;
1692
1693 /* first element in the array belongs to primary VF VSI and we shouldn't
1694 * delete it. We should however delete the rest of the VSIs created
1695 */
1696 for (i = 1; i < vf->num_tc; i++) {
1697 if (vf->ch[i].vsi_idx) {
1698 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
1699 vf->ch[i].vsi_idx = 0;
1700 vf->ch[i].vsi_id = 0;
1701 }
1702 }
1703}
1704
1705/**
1706 * i40e_vc_get_vf_resources_msg
1707 * @vf: pointer to the VF info
1708 * @msg: pointer to the msg buffer
1709 * @msglen: msg length
1710 *
1711 * called from the VF to request its resources
1712 **/
1713static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
1714{
1715 struct virtchnl_vf_resource *vfres = NULL;
1716 struct i40e_pf *pf = vf->pf;
1717 i40e_status aq_ret = 0;
1718 struct i40e_vsi *vsi;
1719 int num_vsis = 1;
1720 int len = 0;
1721 int ret;
1722
1723 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
1724 aq_ret = I40E_ERR_PARAM;
1725 goto err;
1726 }
1727
1728 len = (sizeof(struct virtchnl_vf_resource) +
1729 sizeof(struct virtchnl_vsi_resource) * num_vsis);
1730
1731 vfres = kzalloc(len, GFP_KERNEL);
1732 if (!vfres) {
1733 aq_ret = I40E_ERR_NO_MEMORY;
1734 len = 0;
1735 goto err;
1736 }
1737 if (VF_IS_V11(&vf->vf_ver))
1738 vf->driver_caps = *(u32 *)msg;
1739 else
1740 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
1741 VIRTCHNL_VF_OFFLOAD_RSS_REG |
1742 VIRTCHNL_VF_OFFLOAD_VLAN;
1743
1744 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
1745 vsi = pf->vsi[vf->lan_vsi_idx];
1746 if (!vsi->info.pvid)
1747 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
1748
1749 if (i40e_vf_client_capable(pf, vf->vf_id) &&
1750 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_IWARP)) {
1751 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_IWARP;
1752 set_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
1753 } else {
1754 clear_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
1755 }
1756
1757 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
1758 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
1759 } else {
1760 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
1761 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
1762 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
1763 else
1764 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
1765 }
1766
1767 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
1768 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1769 vfres->vf_cap_flags |=
1770 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
1771 }
1772
1773 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
1774 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
1775
1776 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
1777 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
1778 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
1779
1780 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
1781 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
1782 dev_err(&pf->pdev->dev,
1783 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
1784 vf->vf_id);
1785 aq_ret = I40E_ERR_PARAM;
1786 goto err;
1787 }
1788 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
1789 }
1790
1791 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
1792 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
1793 vfres->vf_cap_flags |=
1794 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
1795 }
1796
1797 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
1798 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
1799
1800 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
1801 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
1802
1803 vfres->num_vsis = num_vsis;
1804 vfres->num_queue_pairs = vf->num_queue_pairs;
1805 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
1806 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
1807 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
1808
1809 if (vf->lan_vsi_idx) {
1810 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
1811 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
1812 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
1813 /* VFs only use TC 0 */
1814 vfres->vsi_res[0].qset_handle
1815 = le16_to_cpu(vsi->info.qs_handle[0]);
1816 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
1817 vf->default_lan_addr.addr);
1818 }
1819 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1820
1821err:
1822 /* send the response back to the VF */
1823 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
1824 aq_ret, (u8 *)vfres, len);
1825
1826 kfree(vfres);
1827 return ret;
1828}
1829
1830/**
1831 * i40e_vc_reset_vf_msg
1832 * @vf: pointer to the VF info
1833 * @msg: pointer to the msg buffer
1834 * @msglen: msg length
1835 *
1836 * called from the VF to reset itself,
1837 * unlike other virtchnl messages, PF driver
1838 * doesn't send the response back to the VF
1839 **/
1840static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
1841{
1842 if (test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
1843 i40e_reset_vf(vf, false);
1844}
1845
1846/**
1847 * i40e_getnum_vf_vsi_vlan_filters
1848 * @vsi: pointer to the vsi
1849 *
1850 * called to get the number of VLANs offloaded on this VF
1851 **/
1852static inline int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1853{
1854 struct i40e_mac_filter *f;
1855 int num_vlans = 0, bkt;
1856
1857 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1858 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1859 num_vlans++;
1860 }
1861
1862 return num_vlans;
1863}
1864
1865/**
1866 * i40e_vc_config_promiscuous_mode_msg
1867 * @vf: pointer to the VF info
1868 * @msg: pointer to the msg buffer
1869 * @msglen: msg length
1870 *
1871 * called from the VF to configure the promiscuous mode of
1872 * VF vsis
1873 **/
1874static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf,
1875 u8 *msg, u16 msglen)
1876{
1877 struct virtchnl_promisc_info *info =
1878 (struct virtchnl_promisc_info *)msg;
1879 struct i40e_pf *pf = vf->pf;
1880 struct i40e_hw *hw = &pf->hw;
1881 struct i40e_mac_filter *f;
1882 i40e_status aq_ret = 0;
1883 bool allmulti = false;
1884 struct i40e_vsi *vsi;
1885 bool alluni = false;
1886 int aq_err = 0;
1887 int bkt;
1888
1889 vsi = i40e_find_vsi_from_id(pf, info->vsi_id);
1890 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
1891 !i40e_vc_isvalid_vsi_id(vf, info->vsi_id) ||
1892 !vsi) {
1893 aq_ret = I40E_ERR_PARAM;
1894 goto error_param;
1895 }
1896 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
1897 dev_err(&pf->pdev->dev,
1898 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
1899 vf->vf_id);
1900 /* Lie to the VF on purpose. */
1901 aq_ret = 0;
1902 goto error_param;
1903 }
1904 /* Multicast promiscuous handling*/
1905 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
1906 allmulti = true;
1907
1908 if (vf->port_vlan_id) {
1909 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, vsi->seid,
1910 allmulti,
1911 vf->port_vlan_id,
1912 NULL);
1913 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1914 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1915 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1916 continue;
1917 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw,
1918 vsi->seid,
1919 allmulti,
1920 f->vlan,
1921 NULL);
1922 aq_err = pf->hw.aq.asq_last_status;
1923 if (aq_ret) {
1924 dev_err(&pf->pdev->dev,
1925 "Could not add VLAN %d to multicast promiscuous domain err %s aq_err %s\n",
1926 f->vlan,
1927 i40e_stat_str(&pf->hw, aq_ret),
1928 i40e_aq_str(&pf->hw, aq_err));
1929 break;
1930 }
1931 }
1932 } else {
1933 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid,
1934 allmulti, NULL);
1935 aq_err = pf->hw.aq.asq_last_status;
1936 if (aq_ret) {
1937 dev_err(&pf->pdev->dev,
1938 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1939 vf->vf_id,
1940 i40e_stat_str(&pf->hw, aq_ret),
1941 i40e_aq_str(&pf->hw, aq_err));
1942 goto error_param;
1943 }
1944 }
1945
1946 if (!aq_ret) {
1947 dev_info(&pf->pdev->dev,
1948 "VF %d successfully set multicast promiscuous mode\n",
1949 vf->vf_id);
1950 if (allmulti)
1951 set_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1952 else
1953 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1954 }
1955
1956 if (info->flags & FLAG_VF_UNICAST_PROMISC)
1957 alluni = true;
1958 if (vf->port_vlan_id) {
1959 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, vsi->seid,
1960 alluni,
1961 vf->port_vlan_id,
1962 NULL);
1963 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1964 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1965 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1966 continue;
1967 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw,
1968 vsi->seid,
1969 alluni,
1970 f->vlan,
1971 NULL);
1972 aq_err = pf->hw.aq.asq_last_status;
1973 if (aq_ret)
1974 dev_err(&pf->pdev->dev,
1975 "Could not add VLAN %d to Unicast promiscuous domain err %s aq_err %s\n",
1976 f->vlan,
1977 i40e_stat_str(&pf->hw, aq_ret),
1978 i40e_aq_str(&pf->hw, aq_err));
1979 }
1980 } else {
1981 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, vsi->seid,
1982 alluni, NULL,
1983 true);
1984 aq_err = pf->hw.aq.asq_last_status;
1985 if (aq_ret) {
1986 dev_err(&pf->pdev->dev,
1987 "VF %d failed to set unicast promiscuous mode %8.8x err %s aq_err %s\n",
1988 vf->vf_id, info->flags,
1989 i40e_stat_str(&pf->hw, aq_ret),
1990 i40e_aq_str(&pf->hw, aq_err));
1991 goto error_param;
1992 }
1993 }
1994
1995 if (!aq_ret) {
1996 dev_info(&pf->pdev->dev,
1997 "VF %d successfully set unicast promiscuous mode\n",
1998 vf->vf_id);
1999 if (alluni)
2000 set_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
2001 else
2002 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
2003 }
2004
2005error_param:
2006 /* send the response to the VF */
2007 return i40e_vc_send_resp_to_vf(vf,
2008 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2009 aq_ret);
2010}
2011
2012/**
2013 * i40e_vc_config_queues_msg
2014 * @vf: pointer to the VF info
2015 * @msg: pointer to the msg buffer
2016 * @msglen: msg length
2017 *
2018 * called from the VF to configure the rx/tx
2019 * queues
2020 **/
2021static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2022{
2023 struct virtchnl_vsi_queue_config_info *qci =
2024 (struct virtchnl_vsi_queue_config_info *)msg;
2025 struct virtchnl_queue_pair_info *qpi;
2026 struct i40e_pf *pf = vf->pf;
2027 u16 vsi_id, vsi_queue_id = 0;
2028 i40e_status aq_ret = 0;
2029 int i, j = 0, idx = 0;
2030
2031 vsi_id = qci->vsi_id;
2032
2033 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2034 aq_ret = I40E_ERR_PARAM;
2035 goto error_param;
2036 }
2037
2038 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2039 aq_ret = I40E_ERR_PARAM;
2040 goto error_param;
2041 }
2042
2043 for (i = 0; i < qci->num_queue_pairs; i++) {
2044 qpi = &qci->qpair[i];
2045
2046 if (!vf->adq_enabled) {
2047 vsi_queue_id = qpi->txq.queue_id;
2048
2049 if (qpi->txq.vsi_id != qci->vsi_id ||
2050 qpi->rxq.vsi_id != qci->vsi_id ||
2051 qpi->rxq.queue_id != vsi_queue_id) {
2052 aq_ret = I40E_ERR_PARAM;
2053 goto error_param;
2054 }
2055 }
2056
2057 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) {
2058 aq_ret = I40E_ERR_PARAM;
2059 goto error_param;
2060 }
2061
2062 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2063 &qpi->rxq) ||
2064 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2065 &qpi->txq)) {
2066 aq_ret = I40E_ERR_PARAM;
2067 goto error_param;
2068 }
2069
2070 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2071 * VF does not know about these additional VSIs and all
2072 * it cares is about its own queues. PF configures these queues
2073 * to its appropriate VSIs based on TC mapping
2074 **/
2075 if (vf->adq_enabled) {
2076 if (j == (vf->ch[idx].num_qps - 1)) {
2077 idx++;
2078 j = 0; /* resetting the queue count */
2079 vsi_queue_id = 0;
2080 } else {
2081 j++;
2082 vsi_queue_id++;
2083 }
2084 vsi_id = vf->ch[idx].vsi_id;
2085 }
2086 }
2087 /* set vsi num_queue_pairs in use to num configured by VF */
2088 if (!vf->adq_enabled) {
2089 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2090 qci->num_queue_pairs;
2091 } else {
2092 for (i = 0; i < vf->num_tc; i++)
2093 pf->vsi[vf->ch[i].vsi_idx]->num_queue_pairs =
2094 vf->ch[i].num_qps;
2095 }
2096
2097error_param:
2098 /* send the response to the VF */
2099 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2100 aq_ret);
2101}
2102
2103/**
2104 * i40e_validate_queue_map
2105 * @vsi_id: vsi id
2106 * @queuemap: Tx or Rx queue map
2107 *
2108 * check if Tx or Rx queue map is valid
2109 **/
2110static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2111 unsigned long queuemap)
2112{
2113 u16 vsi_queue_id, queue_id;
2114
2115 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2116 if (vf->adq_enabled) {
2117 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2118 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2119 } else {
2120 queue_id = vsi_queue_id;
2121 }
2122
2123 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2124 return -EINVAL;
2125 }
2126
2127 return 0;
2128}
2129
2130/**
2131 * i40e_vc_config_irq_map_msg
2132 * @vf: pointer to the VF info
2133 * @msg: pointer to the msg buffer
2134 * @msglen: msg length
2135 *
2136 * called from the VF to configure the irq to
2137 * queue map
2138 **/
2139static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2140{
2141 struct virtchnl_irq_map_info *irqmap_info =
2142 (struct virtchnl_irq_map_info *)msg;
2143 struct virtchnl_vector_map *map;
2144 u16 vsi_id, vector_id;
2145 i40e_status aq_ret = 0;
2146 int i;
2147
2148 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2149 aq_ret = I40E_ERR_PARAM;
2150 goto error_param;
2151 }
2152
2153 for (i = 0; i < irqmap_info->num_vectors; i++) {
2154 map = &irqmap_info->vecmap[i];
2155 vector_id = map->vector_id;
2156 vsi_id = map->vsi_id;
2157 /* validate msg params */
2158 if (!i40e_vc_isvalid_vector_id(vf, vector_id) ||
2159 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2160 aq_ret = I40E_ERR_PARAM;
2161 goto error_param;
2162 }
2163
2164 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2165 aq_ret = I40E_ERR_PARAM;
2166 goto error_param;
2167 }
2168
2169 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2170 aq_ret = I40E_ERR_PARAM;
2171 goto error_param;
2172 }
2173
2174 i40e_config_irq_link_list(vf, vsi_id, map);
2175 }
2176error_param:
2177 /* send the response to the VF */
2178 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2179 aq_ret);
2180}
2181
2182/**
2183 * i40e_vc_enable_queues_msg
2184 * @vf: pointer to the VF info
2185 * @msg: pointer to the msg buffer
2186 * @msglen: msg length
2187 *
2188 * called from the VF to enable all or specific queue(s)
2189 **/
2190static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2191{
2192 struct virtchnl_queue_select *vqs =
2193 (struct virtchnl_queue_select *)msg;
2194 struct i40e_pf *pf = vf->pf;
2195 u16 vsi_id = vqs->vsi_id;
2196 i40e_status aq_ret = 0;
2197 int i;
2198
2199 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2200 aq_ret = I40E_ERR_PARAM;
2201 goto error_param;
2202 }
2203
2204 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2205 aq_ret = I40E_ERR_PARAM;
2206 goto error_param;
2207 }
2208
2209 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
2210 aq_ret = I40E_ERR_PARAM;
2211 goto error_param;
2212 }
2213
2214 if (i40e_vsi_start_rings(pf->vsi[vf->lan_vsi_idx]))
2215 aq_ret = I40E_ERR_TIMEOUT;
2216
2217 /* need to start the rings for additional ADq VSI's as well */
2218 if (vf->adq_enabled) {
2219 /* zero belongs to LAN VSI */
2220 for (i = 1; i < vf->num_tc; i++) {
2221 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2222 aq_ret = I40E_ERR_TIMEOUT;
2223 }
2224 }
2225
2226error_param:
2227 /* send the response to the VF */
2228 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2229 aq_ret);
2230}
2231
2232/**
2233 * i40e_vc_disable_queues_msg
2234 * @vf: pointer to the VF info
2235 * @msg: pointer to the msg buffer
2236 * @msglen: msg length
2237 *
2238 * called from the VF to disable all or specific
2239 * queue(s)
2240 **/
2241static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2242{
2243 struct virtchnl_queue_select *vqs =
2244 (struct virtchnl_queue_select *)msg;
2245 struct i40e_pf *pf = vf->pf;
2246 i40e_status aq_ret = 0;
2247
2248 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2249 aq_ret = I40E_ERR_PARAM;
2250 goto error_param;
2251 }
2252
2253 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2254 aq_ret = I40E_ERR_PARAM;
2255 goto error_param;
2256 }
2257
2258 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
2259 aq_ret = I40E_ERR_PARAM;
2260 goto error_param;
2261 }
2262
2263 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
2264
2265error_param:
2266 /* send the response to the VF */
2267 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2268 aq_ret);
2269}
2270
2271/**
2272 * i40e_vc_request_queues_msg
2273 * @vf: pointer to the VF info
2274 * @msg: pointer to the msg buffer
2275 * @msglen: msg length
2276 *
2277 * VFs get a default number of queues but can use this message to request a
2278 * different number. If the request is successful, PF will reset the VF and
2279 * return 0. If unsuccessful, PF will send message informing VF of number of
2280 * available queues and return result of sending VF a message.
2281 **/
2282static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg, int msglen)
2283{
2284 struct virtchnl_vf_res_request *vfres =
2285 (struct virtchnl_vf_res_request *)msg;
2286 int req_pairs = vfres->num_queue_pairs;
2287 int cur_pairs = vf->num_queue_pairs;
2288 struct i40e_pf *pf = vf->pf;
2289
2290 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
2291 return -EINVAL;
2292
2293 if (req_pairs <= 0) {
2294 dev_err(&pf->pdev->dev,
2295 "VF %d tried to request %d queues. Ignoring.\n",
2296 vf->vf_id, req_pairs);
2297 } else if (req_pairs > I40E_MAX_VF_QUEUES) {
2298 dev_err(&pf->pdev->dev,
2299 "VF %d tried to request more than %d queues.\n",
2300 vf->vf_id,
2301 I40E_MAX_VF_QUEUES);
2302 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2303 } else if (req_pairs - cur_pairs > pf->queues_left) {
2304 dev_warn(&pf->pdev->dev,
2305 "VF %d requested %d more queues, but only %d left.\n",
2306 vf->vf_id,
2307 req_pairs - cur_pairs,
2308 pf->queues_left);
2309 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2310 } else {
2311 /* successful request */
2312 vf->num_req_queues = req_pairs;
2313 i40e_vc_notify_vf_reset(vf);
2314 i40e_reset_vf(vf, false);
2315 return 0;
2316 }
2317
2318 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2319 (u8 *)vfres, sizeof(*vfres));
2320}
2321
2322/**
2323 * i40e_vc_get_stats_msg
2324 * @vf: pointer to the VF info
2325 * @msg: pointer to the msg buffer
2326 * @msglen: msg length
2327 *
2328 * called from the VF to get vsi stats
2329 **/
2330static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2331{
2332 struct virtchnl_queue_select *vqs =
2333 (struct virtchnl_queue_select *)msg;
2334 struct i40e_pf *pf = vf->pf;
2335 struct i40e_eth_stats stats;
2336 i40e_status aq_ret = 0;
2337 struct i40e_vsi *vsi;
2338
2339 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2340
2341 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2342 aq_ret = I40E_ERR_PARAM;
2343 goto error_param;
2344 }
2345
2346 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2347 aq_ret = I40E_ERR_PARAM;
2348 goto error_param;
2349 }
2350
2351 vsi = pf->vsi[vf->lan_vsi_idx];
2352 if (!vsi) {
2353 aq_ret = I40E_ERR_PARAM;
2354 goto error_param;
2355 }
2356 i40e_update_eth_stats(vsi);
2357 stats = vsi->eth_stats;
2358
2359error_param:
2360 /* send the response back to the VF */
2361 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2362 (u8 *)&stats, sizeof(stats));
2363}
2364
2365/* If the VF is not trusted restrict the number of MAC/VLAN it can program */
2366#define I40E_VC_MAX_MAC_ADDR_PER_VF 12
2367#define I40E_VC_MAX_VLAN_PER_VF 8
2368
2369/**
2370 * i40e_check_vf_permission
2371 * @vf: pointer to the VF info
2372 * @al: MAC address list from virtchnl
2373 *
2374 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2375 * if any address in the list is not valid. Checks the following conditions:
2376 *
2377 * 1) broadcast and zero addresses are never valid
2378 * 2) unicast addresses are not allowed if the VMM has administratively set
2379 * the VF MAC address, unless the VF is marked as privileged.
2380 * 3) There is enough space to add all the addresses.
2381 *
2382 * Note that to guarantee consistency, it is expected this function be called
2383 * while holding the mac_filter_hash_lock, as otherwise the current number of
2384 * addresses might not be accurate.
2385 **/
2386static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2387 struct virtchnl_ether_addr_list *al)
2388{
2389 struct i40e_pf *pf = vf->pf;
2390 int i;
2391
2392 /* If this VF is not privileged, then we can't add more than a limited
2393 * number of addresses. Check to make sure that the additions do not
2394 * push us over the limit.
2395 */
2396 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2397 (vf->num_mac + al->num_elements) > I40E_VC_MAX_MAC_ADDR_PER_VF) {
2398 dev_err(&pf->pdev->dev,
2399 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2400 return -EPERM;
2401 }
2402
2403 for (i = 0; i < al->num_elements; i++) {
2404 u8 *addr = al->list[i].addr;
2405
2406 if (is_broadcast_ether_addr(addr) ||
2407 is_zero_ether_addr(addr)) {
2408 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2409 addr);
2410 return I40E_ERR_INVALID_MAC_ADDR;
2411 }
2412
2413 /* If the host VMM administrator has set the VF MAC address
2414 * administratively via the ndo_set_vf_mac command then deny
2415 * permission to the VF to add or delete unicast MAC addresses.
2416 * Unless the VF is privileged and then it can do whatever.
2417 * The VF may request to set the MAC address filter already
2418 * assigned to it so do not return an error in that case.
2419 */
2420 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2421 !is_multicast_ether_addr(addr) && vf->pf_set_mac &&
2422 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2423 dev_err(&pf->pdev->dev,
2424 "VF attempting to override administratively set MAC address, reload the VF driver to resume normal operation\n");
2425 return -EPERM;
2426 }
2427 }
2428
2429 return 0;
2430}
2431
2432/**
2433 * i40e_vc_add_mac_addr_msg
2434 * @vf: pointer to the VF info
2435 * @msg: pointer to the msg buffer
2436 * @msglen: msg length
2437 *
2438 * add guest mac address filter
2439 **/
2440static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2441{
2442 struct virtchnl_ether_addr_list *al =
2443 (struct virtchnl_ether_addr_list *)msg;
2444 struct i40e_pf *pf = vf->pf;
2445 struct i40e_vsi *vsi = NULL;
2446 u16 vsi_id = al->vsi_id;
2447 i40e_status ret = 0;
2448 int i;
2449
2450 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2451 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2452 ret = I40E_ERR_PARAM;
2453 goto error_param;
2454 }
2455
2456 vsi = pf->vsi[vf->lan_vsi_idx];
2457
2458 /* Lock once, because all function inside for loop accesses VSI's
2459 * MAC filter list which needs to be protected using same lock.
2460 */
2461 spin_lock_bh(&vsi->mac_filter_hash_lock);
2462
2463 ret = i40e_check_vf_permission(vf, al);
2464 if (ret) {
2465 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2466 goto error_param;
2467 }
2468
2469 /* add new addresses to the list */
2470 for (i = 0; i < al->num_elements; i++) {
2471 struct i40e_mac_filter *f;
2472
2473 f = i40e_find_mac(vsi, al->list[i].addr);
2474 if (!f) {
2475 f = i40e_add_mac_filter(vsi, al->list[i].addr);
2476
2477 if (!f) {
2478 dev_err(&pf->pdev->dev,
2479 "Unable to add MAC filter %pM for VF %d\n",
2480 al->list[i].addr, vf->vf_id);
2481 ret = I40E_ERR_PARAM;
2482 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2483 goto error_param;
2484 } else {
2485 vf->num_mac++;
2486 }
2487 }
2488 }
2489 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2490
2491 /* program the updated filter list */
2492 ret = i40e_sync_vsi_filters(vsi);
2493 if (ret)
2494 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2495 vf->vf_id, ret);
2496
2497error_param:
2498 /* send the response to the VF */
2499 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
2500 ret);
2501}
2502
2503/**
2504 * i40e_vc_del_mac_addr_msg
2505 * @vf: pointer to the VF info
2506 * @msg: pointer to the msg buffer
2507 * @msglen: msg length
2508 *
2509 * remove guest mac address filter
2510 **/
2511static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2512{
2513 struct virtchnl_ether_addr_list *al =
2514 (struct virtchnl_ether_addr_list *)msg;
2515 struct i40e_pf *pf = vf->pf;
2516 struct i40e_vsi *vsi = NULL;
2517 u16 vsi_id = al->vsi_id;
2518 i40e_status ret = 0;
2519 int i;
2520
2521 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2522 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2523 ret = I40E_ERR_PARAM;
2524 goto error_param;
2525 }
2526
2527 for (i = 0; i < al->num_elements; i++) {
2528 if (is_broadcast_ether_addr(al->list[i].addr) ||
2529 is_zero_ether_addr(al->list[i].addr)) {
2530 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
2531 al->list[i].addr, vf->vf_id);
2532 ret = I40E_ERR_INVALID_MAC_ADDR;
2533 goto error_param;
2534 }
2535 }
2536 vsi = pf->vsi[vf->lan_vsi_idx];
2537
2538 spin_lock_bh(&vsi->mac_filter_hash_lock);
2539 /* delete addresses from the list */
2540 for (i = 0; i < al->num_elements; i++)
2541 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
2542 ret = I40E_ERR_INVALID_MAC_ADDR;
2543 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2544 goto error_param;
2545 } else {
2546 vf->num_mac--;
2547 }
2548
2549 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2550
2551 /* program the updated filter list */
2552 ret = i40e_sync_vsi_filters(vsi);
2553 if (ret)
2554 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2555 vf->vf_id, ret);
2556
2557error_param:
2558 /* send the response to the VF */
2559 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR,
2560 ret);
2561}
2562
2563/**
2564 * i40e_vc_add_vlan_msg
2565 * @vf: pointer to the VF info
2566 * @msg: pointer to the msg buffer
2567 * @msglen: msg length
2568 *
2569 * program guest vlan id
2570 **/
2571static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2572{
2573 struct virtchnl_vlan_filter_list *vfl =
2574 (struct virtchnl_vlan_filter_list *)msg;
2575 struct i40e_pf *pf = vf->pf;
2576 struct i40e_vsi *vsi = NULL;
2577 u16 vsi_id = vfl->vsi_id;
2578 i40e_status aq_ret = 0;
2579 int i;
2580
2581 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
2582 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2583 dev_err(&pf->pdev->dev,
2584 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
2585 goto error_param;
2586 }
2587 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2588 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2589 aq_ret = I40E_ERR_PARAM;
2590 goto error_param;
2591 }
2592
2593 for (i = 0; i < vfl->num_elements; i++) {
2594 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
2595 aq_ret = I40E_ERR_PARAM;
2596 dev_err(&pf->pdev->dev,
2597 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
2598 goto error_param;
2599 }
2600 }
2601 vsi = pf->vsi[vf->lan_vsi_idx];
2602 if (vsi->info.pvid) {
2603 aq_ret = I40E_ERR_PARAM;
2604 goto error_param;
2605 }
2606
2607 i40e_vlan_stripping_enable(vsi);
2608 for (i = 0; i < vfl->num_elements; i++) {
2609 /* add new VLAN filter */
2610 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
2611 if (!ret)
2612 vf->num_vlan++;
2613
2614 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
2615 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
2616 true,
2617 vfl->vlan_id[i],
2618 NULL);
2619 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
2620 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
2621 true,
2622 vfl->vlan_id[i],
2623 NULL);
2624
2625 if (ret)
2626 dev_err(&pf->pdev->dev,
2627 "Unable to add VLAN filter %d for VF %d, error %d\n",
2628 vfl->vlan_id[i], vf->vf_id, ret);
2629 }
2630
2631error_param:
2632 /* send the response to the VF */
2633 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
2634}
2635
2636/**
2637 * i40e_vc_remove_vlan_msg
2638 * @vf: pointer to the VF info
2639 * @msg: pointer to the msg buffer
2640 * @msglen: msg length
2641 *
2642 * remove programmed guest vlan id
2643 **/
2644static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2645{
2646 struct virtchnl_vlan_filter_list *vfl =
2647 (struct virtchnl_vlan_filter_list *)msg;
2648 struct i40e_pf *pf = vf->pf;
2649 struct i40e_vsi *vsi = NULL;
2650 u16 vsi_id = vfl->vsi_id;
2651 i40e_status aq_ret = 0;
2652 int i;
2653
2654 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2655 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2656 aq_ret = I40E_ERR_PARAM;
2657 goto error_param;
2658 }
2659
2660 for (i = 0; i < vfl->num_elements; i++) {
2661 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
2662 aq_ret = I40E_ERR_PARAM;
2663 goto error_param;
2664 }
2665 }
2666
2667 vsi = pf->vsi[vf->lan_vsi_idx];
2668 if (vsi->info.pvid) {
2669 aq_ret = I40E_ERR_PARAM;
2670 goto error_param;
2671 }
2672
2673 for (i = 0; i < vfl->num_elements; i++) {
2674 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
2675 vf->num_vlan--;
2676
2677 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
2678 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
2679 false,
2680 vfl->vlan_id[i],
2681 NULL);
2682 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
2683 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
2684 false,
2685 vfl->vlan_id[i],
2686 NULL);
2687 }
2688
2689error_param:
2690 /* send the response to the VF */
2691 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
2692}
2693
2694/**
2695 * i40e_vc_iwarp_msg
2696 * @vf: pointer to the VF info
2697 * @msg: pointer to the msg buffer
2698 * @msglen: msg length
2699 *
2700 * called from the VF for the iwarp msgs
2701 **/
2702static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2703{
2704 struct i40e_pf *pf = vf->pf;
2705 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
2706 i40e_status aq_ret = 0;
2707
2708 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2709 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
2710 aq_ret = I40E_ERR_PARAM;
2711 goto error_param;
2712 }
2713
2714 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
2715 msg, msglen);
2716
2717error_param:
2718 /* send the response to the VF */
2719 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP,
2720 aq_ret);
2721}
2722
2723/**
2724 * i40e_vc_iwarp_qvmap_msg
2725 * @vf: pointer to the VF info
2726 * @msg: pointer to the msg buffer
2727 * @msglen: msg length
2728 * @config: config qvmap or release it
2729 *
2730 * called from the VF for the iwarp msgs
2731 **/
2732static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, u16 msglen,
2733 bool config)
2734{
2735 struct virtchnl_iwarp_qvlist_info *qvlist_info =
2736 (struct virtchnl_iwarp_qvlist_info *)msg;
2737 i40e_status aq_ret = 0;
2738
2739 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2740 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
2741 aq_ret = I40E_ERR_PARAM;
2742 goto error_param;
2743 }
2744
2745 if (config) {
2746 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
2747 aq_ret = I40E_ERR_PARAM;
2748 } else {
2749 i40e_release_iwarp_qvlist(vf);
2750 }
2751
2752error_param:
2753 /* send the response to the VF */
2754 return i40e_vc_send_resp_to_vf(vf,
2755 config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP :
2756 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP,
2757 aq_ret);
2758}
2759
2760/**
2761 * i40e_vc_config_rss_key
2762 * @vf: pointer to the VF info
2763 * @msg: pointer to the msg buffer
2764 * @msglen: msg length
2765 *
2766 * Configure the VF's RSS key
2767 **/
2768static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg, u16 msglen)
2769{
2770 struct virtchnl_rss_key *vrk =
2771 (struct virtchnl_rss_key *)msg;
2772 struct i40e_pf *pf = vf->pf;
2773 struct i40e_vsi *vsi = NULL;
2774 u16 vsi_id = vrk->vsi_id;
2775 i40e_status aq_ret = 0;
2776
2777 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2778 !i40e_vc_isvalid_vsi_id(vf, vsi_id) ||
2779 (vrk->key_len != I40E_HKEY_ARRAY_SIZE)) {
2780 aq_ret = I40E_ERR_PARAM;
2781 goto err;
2782 }
2783
2784 vsi = pf->vsi[vf->lan_vsi_idx];
2785 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
2786err:
2787 /* send the response to the VF */
2788 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
2789 aq_ret);
2790}
2791
2792/**
2793 * i40e_vc_config_rss_lut
2794 * @vf: pointer to the VF info
2795 * @msg: pointer to the msg buffer
2796 * @msglen: msg length
2797 *
2798 * Configure the VF's RSS LUT
2799 **/
2800static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg, u16 msglen)
2801{
2802 struct virtchnl_rss_lut *vrl =
2803 (struct virtchnl_rss_lut *)msg;
2804 struct i40e_pf *pf = vf->pf;
2805 struct i40e_vsi *vsi = NULL;
2806 u16 vsi_id = vrl->vsi_id;
2807 i40e_status aq_ret = 0;
2808
2809 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2810 !i40e_vc_isvalid_vsi_id(vf, vsi_id) ||
2811 (vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE)) {
2812 aq_ret = I40E_ERR_PARAM;
2813 goto err;
2814 }
2815
2816 vsi = pf->vsi[vf->lan_vsi_idx];
2817 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
2818 /* send the response to the VF */
2819err:
2820 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
2821 aq_ret);
2822}
2823
2824/**
2825 * i40e_vc_get_rss_hena
2826 * @vf: pointer to the VF info
2827 * @msg: pointer to the msg buffer
2828 * @msglen: msg length
2829 *
2830 * Return the RSS HENA bits allowed by the hardware
2831 **/
2832static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg, u16 msglen)
2833{
2834 struct virtchnl_rss_hena *vrh = NULL;
2835 struct i40e_pf *pf = vf->pf;
2836 i40e_status aq_ret = 0;
2837 int len = 0;
2838
2839 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2840 aq_ret = I40E_ERR_PARAM;
2841 goto err;
2842 }
2843 len = sizeof(struct virtchnl_rss_hena);
2844
2845 vrh = kzalloc(len, GFP_KERNEL);
2846 if (!vrh) {
2847 aq_ret = I40E_ERR_NO_MEMORY;
2848 len = 0;
2849 goto err;
2850 }
2851 vrh->hena = i40e_pf_get_default_rss_hena(pf);
2852err:
2853 /* send the response back to the VF */
2854 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
2855 aq_ret, (u8 *)vrh, len);
2856 kfree(vrh);
2857 return aq_ret;
2858}
2859
2860/**
2861 * i40e_vc_set_rss_hena
2862 * @vf: pointer to the VF info
2863 * @msg: pointer to the msg buffer
2864 * @msglen: msg length
2865 *
2866 * Set the RSS HENA bits for the VF
2867 **/
2868static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg, u16 msglen)
2869{
2870 struct virtchnl_rss_hena *vrh =
2871 (struct virtchnl_rss_hena *)msg;
2872 struct i40e_pf *pf = vf->pf;
2873 struct i40e_hw *hw = &pf->hw;
2874 i40e_status aq_ret = 0;
2875
2876 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2877 aq_ret = I40E_ERR_PARAM;
2878 goto err;
2879 }
2880 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
2881 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
2882 (u32)(vrh->hena >> 32));
2883
2884 /* send the response to the VF */
2885err:
2886 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
2887}
2888
2889/**
2890 * i40e_vc_enable_vlan_stripping
2891 * @vf: pointer to the VF info
2892 * @msg: pointer to the msg buffer
2893 * @msglen: msg length
2894 *
2895 * Enable vlan header stripping for the VF
2896 **/
2897static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg,
2898 u16 msglen)
2899{
2900 struct i40e_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
2901 i40e_status aq_ret = 0;
2902
2903 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2904 aq_ret = I40E_ERR_PARAM;
2905 goto err;
2906 }
2907
2908 i40e_vlan_stripping_enable(vsi);
2909
2910 /* send the response to the VF */
2911err:
2912 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
2913 aq_ret);
2914}
2915
2916/**
2917 * i40e_vc_disable_vlan_stripping
2918 * @vf: pointer to the VF info
2919 * @msg: pointer to the msg buffer
2920 * @msglen: msg length
2921 *
2922 * Disable vlan header stripping for the VF
2923 **/
2924static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg,
2925 u16 msglen)
2926{
2927 struct i40e_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
2928 i40e_status aq_ret = 0;
2929
2930 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2931 aq_ret = I40E_ERR_PARAM;
2932 goto err;
2933 }
2934
2935 i40e_vlan_stripping_disable(vsi);
2936
2937 /* send the response to the VF */
2938err:
2939 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
2940 aq_ret);
2941}
2942
2943/**
2944 * i40e_validate_cloud_filter
2945 * @mask: mask for TC filter
2946 * @data: data for TC filter
2947 *
2948 * This function validates cloud filter programmed as TC filter for ADq
2949 **/
2950static int i40e_validate_cloud_filter(struct i40e_vf *vf,
2951 struct virtchnl_filter *tc_filter)
2952{
2953 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
2954 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
2955 struct i40e_pf *pf = vf->pf;
2956 struct i40e_vsi *vsi = NULL;
2957 struct i40e_mac_filter *f;
2958 struct hlist_node *h;
2959 bool found = false;
2960 int bkt;
2961
2962 if (!tc_filter->action) {
2963 dev_info(&pf->pdev->dev,
2964 "VF %d: Currently ADq doesn't support Drop Action\n",
2965 vf->vf_id);
2966 goto err;
2967 }
2968
2969 /* action_meta is TC number here to which the filter is applied */
2970 if (!tc_filter->action_meta ||
2971 tc_filter->action_meta > I40E_MAX_VF_VSI) {
2972 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
2973 vf->vf_id, tc_filter->action_meta);
2974 goto err;
2975 }
2976
2977 /* Check filter if it's programmed for advanced mode or basic mode.
2978 * There are two ADq modes (for VF only),
2979 * 1. Basic mode: intended to allow as many filter options as possible
2980 * to be added to a VF in Non-trusted mode. Main goal is
2981 * to add filters to its own MAC and VLAN id.
2982 * 2. Advanced mode: is for allowing filters to be applied other than
2983 * its own MAC or VLAN. This mode requires the VF to be
2984 * Trusted.
2985 */
2986 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
2987 vsi = pf->vsi[vf->lan_vsi_idx];
2988 f = i40e_find_mac(vsi, data.dst_mac);
2989
2990 if (!f) {
2991 dev_info(&pf->pdev->dev,
2992 "Destination MAC %pM doesn't belong to VF %d\n",
2993 data.dst_mac, vf->vf_id);
2994 goto err;
2995 }
2996
2997 if (mask.vlan_id) {
2998 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
2999 hlist) {
3000 if (f->vlan == ntohs(data.vlan_id)) {
3001 found = true;
3002 break;
3003 }
3004 }
3005 if (!found) {
3006 dev_info(&pf->pdev->dev,
3007 "VF %d doesn't have any VLAN id %u\n",
3008 vf->vf_id, ntohs(data.vlan_id));
3009 goto err;
3010 }
3011 }
3012 } else {
3013 /* Check if VF is trusted */
3014 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3015 dev_err(&pf->pdev->dev,
3016 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3017 vf->vf_id);
3018 return I40E_ERR_CONFIG;
3019 }
3020 }
3021
3022 if (mask.dst_mac[0] & data.dst_mac[0]) {
3023 if (is_broadcast_ether_addr(data.dst_mac) ||
3024 is_zero_ether_addr(data.dst_mac)) {
3025 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3026 vf->vf_id, data.dst_mac);
3027 goto err;
3028 }
3029 }
3030
3031 if (mask.src_mac[0] & data.src_mac[0]) {
3032 if (is_broadcast_ether_addr(data.src_mac) ||
3033 is_zero_ether_addr(data.src_mac)) {
3034 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3035 vf->vf_id, data.src_mac);
3036 goto err;
3037 }
3038 }
3039
3040 if (mask.dst_port & data.dst_port) {
3041 if (!data.dst_port || be16_to_cpu(data.dst_port) > 0xFFFF) {
3042 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3043 vf->vf_id);
3044 goto err;
3045 }
3046 }
3047
3048 if (mask.src_port & data.src_port) {
3049 if (!data.src_port || be16_to_cpu(data.src_port) > 0xFFFF) {
3050 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3051 vf->vf_id);
3052 goto err;
3053 }
3054 }
3055
3056 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3057 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3058 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3059 vf->vf_id);
3060 goto err;
3061 }
3062
3063 if (mask.vlan_id & data.vlan_id) {
3064 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3065 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3066 vf->vf_id);
3067 goto err;
3068 }
3069 }
3070
3071 return I40E_SUCCESS;
3072err:
3073 return I40E_ERR_CONFIG;
3074}
3075
3076/**
3077 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3078 * @vf: pointer to the VF info
3079 * @seid - seid of the vsi it is searching for
3080 **/
3081static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3082{
3083 struct i40e_pf *pf = vf->pf;
3084 struct i40e_vsi *vsi = NULL;
3085 int i;
3086
3087 for (i = 0; i < vf->num_tc ; i++) {
3088 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3089 if (vsi && vsi->seid == seid)
3090 return vsi;
3091 }
3092 return NULL;
3093}
3094
3095/**
3096 * i40e_del_all_cloud_filters
3097 * @vf: pointer to the VF info
3098 *
3099 * This function deletes all cloud filters
3100 **/
3101static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3102{
3103 struct i40e_cloud_filter *cfilter = NULL;
3104 struct i40e_pf *pf = vf->pf;
3105 struct i40e_vsi *vsi = NULL;
3106 struct hlist_node *node;
3107 int ret;
3108
3109 hlist_for_each_entry_safe(cfilter, node,
3110 &vf->cloud_filter_list, cloud_node) {
3111 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3112
3113 if (!vsi) {
3114 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3115 vf->vf_id, cfilter->seid);
3116 continue;
3117 }
3118
3119 if (cfilter->dst_port)
3120 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3121 false);
3122 else
3123 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3124 if (ret)
3125 dev_err(&pf->pdev->dev,
3126 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3127 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3128 i40e_aq_str(&pf->hw,
3129 pf->hw.aq.asq_last_status));
3130
3131 hlist_del(&cfilter->cloud_node);
3132 kfree(cfilter);
3133 vf->num_cloud_filters--;
3134 }
3135}
3136
3137/**
3138 * i40e_vc_del_cloud_filter
3139 * @vf: pointer to the VF info
3140 * @msg: pointer to the msg buffer
3141 *
3142 * This function deletes a cloud filter programmed as TC filter for ADq
3143 **/
3144static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3145{
3146 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3147 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3148 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3149 struct i40e_cloud_filter cfilter, *cf = NULL;
3150 struct i40e_pf *pf = vf->pf;
3151 struct i40e_vsi *vsi = NULL;
3152 struct hlist_node *node;
3153 i40e_status aq_ret = 0;
3154 int i, ret;
3155
3156 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3157 aq_ret = I40E_ERR_PARAM;
3158 goto err;
3159 }
3160
3161 if (!vf->adq_enabled) {
3162 dev_info(&pf->pdev->dev,
3163 "VF %d: ADq not enabled, can't apply cloud filter\n",
3164 vf->vf_id);
3165 aq_ret = I40E_ERR_PARAM;
3166 goto err;
3167 }
3168
3169 if (i40e_validate_cloud_filter(vf, vcf)) {
3170 dev_info(&pf->pdev->dev,
3171 "VF %d: Invalid input, can't apply cloud filter\n",
3172 vf->vf_id);
3173 aq_ret = I40E_ERR_PARAM;
3174 goto err;
3175 }
3176
3177 memset(&cfilter, 0, sizeof(cfilter));
3178 /* parse destination mac address */
3179 for (i = 0; i < ETH_ALEN; i++)
3180 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3181
3182 /* parse source mac address */
3183 for (i = 0; i < ETH_ALEN; i++)
3184 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3185
3186 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3187 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3188 cfilter.src_port = mask.src_port & tcf.src_port;
3189
3190 switch (vcf->flow_type) {
3191 case VIRTCHNL_TCP_V4_FLOW:
3192 cfilter.n_proto = ETH_P_IP;
3193 if (mask.dst_ip[0] & tcf.dst_ip[0])
3194 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3195 ARRAY_SIZE(tcf.dst_ip));
3196 else if (mask.src_ip[0] & tcf.dst_ip[0])
3197 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3198 ARRAY_SIZE(tcf.dst_ip));
3199 break;
3200 case VIRTCHNL_TCP_V6_FLOW:
3201 cfilter.n_proto = ETH_P_IPV6;
3202 if (mask.dst_ip[3] & tcf.dst_ip[3])
3203 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3204 sizeof(cfilter.ip.v6.dst_ip6));
3205 if (mask.src_ip[3] & tcf.src_ip[3])
3206 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3207 sizeof(cfilter.ip.v6.src_ip6));
3208 break;
3209 default:
3210 /* TC filter can be configured based on different combinations
3211 * and in this case IP is not a part of filter config
3212 */
3213 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3214 vf->vf_id);
3215 }
3216
3217 /* get the vsi to which the tc belongs to */
3218 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3219 cfilter.seid = vsi->seid;
3220 cfilter.flags = vcf->field_flags;
3221
3222 /* Deleting TC filter */
3223 if (tcf.dst_port)
3224 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3225 else
3226 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3227 if (ret) {
3228 dev_err(&pf->pdev->dev,
3229 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3230 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3231 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3232 goto err;
3233 }
3234
3235 hlist_for_each_entry_safe(cf, node,
3236 &vf->cloud_filter_list, cloud_node) {
3237 if (cf->seid != cfilter.seid)
3238 continue;
3239 if (mask.dst_port)
3240 if (cfilter.dst_port != cf->dst_port)
3241 continue;
3242 if (mask.dst_mac[0])
3243 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3244 continue;
3245 /* for ipv4 data to be valid, only first byte of mask is set */
3246 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3247 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3248 ARRAY_SIZE(tcf.dst_ip)))
3249 continue;
3250 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3251 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3252 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3253 sizeof(cfilter.ip.v6.src_ip6)))
3254 continue;
3255 if (mask.vlan_id)
3256 if (cfilter.vlan_id != cf->vlan_id)
3257 continue;
3258
3259 hlist_del(&cf->cloud_node);
3260 kfree(cf);
3261 vf->num_cloud_filters--;
3262 }
3263
3264err:
3265 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3266 aq_ret);
3267}
3268
3269/**
3270 * i40e_vc_add_cloud_filter
3271 * @vf: pointer to the VF info
3272 * @msg: pointer to the msg buffer
3273 *
3274 * This function adds a cloud filter programmed as TC filter for ADq
3275 **/
3276static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3277{
3278 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3279 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3280 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3281 struct i40e_cloud_filter *cfilter = NULL;
3282 struct i40e_pf *pf = vf->pf;
3283 struct i40e_vsi *vsi = NULL;
3284 i40e_status aq_ret = 0;
3285 int i, ret;
3286
3287 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3288 aq_ret = I40E_ERR_PARAM;
3289 goto err;
3290 }
3291
3292 if (!vf->adq_enabled) {
3293 dev_info(&pf->pdev->dev,
3294 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3295 vf->vf_id);
3296 aq_ret = I40E_ERR_PARAM;
3297 goto err;
3298 }
3299
3300 if (i40e_validate_cloud_filter(vf, vcf)) {
3301 dev_info(&pf->pdev->dev,
3302 "VF %d: Invalid input/s, can't apply cloud filter\n",
3303 vf->vf_id);
3304 aq_ret = I40E_ERR_PARAM;
3305 goto err;
3306 }
3307
3308 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3309 if (!cfilter)
3310 return -ENOMEM;
3311
3312 /* parse destination mac address */
3313 for (i = 0; i < ETH_ALEN; i++)
3314 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3315
3316 /* parse source mac address */
3317 for (i = 0; i < ETH_ALEN; i++)
3318 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3319
3320 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3321 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3322 cfilter->src_port = mask.src_port & tcf.src_port;
3323
3324 switch (vcf->flow_type) {
3325 case VIRTCHNL_TCP_V4_FLOW:
3326 cfilter->n_proto = ETH_P_IP;
3327 if (mask.dst_ip[0] & tcf.dst_ip[0])
3328 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3329 ARRAY_SIZE(tcf.dst_ip));
3330 else if (mask.src_ip[0] & tcf.dst_ip[0])
3331 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3332 ARRAY_SIZE(tcf.dst_ip));
3333 break;
3334 case VIRTCHNL_TCP_V6_FLOW:
3335 cfilter->n_proto = ETH_P_IPV6;
3336 if (mask.dst_ip[3] & tcf.dst_ip[3])
3337 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3338 sizeof(cfilter->ip.v6.dst_ip6));
3339 if (mask.src_ip[3] & tcf.src_ip[3])
3340 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3341 sizeof(cfilter->ip.v6.src_ip6));
3342 break;
3343 default:
3344 /* TC filter can be configured based on different combinations
3345 * and in this case IP is not a part of filter config
3346 */
3347 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3348 vf->vf_id);
3349 }
3350
3351 /* get the VSI to which the TC belongs to */
3352 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3353 cfilter->seid = vsi->seid;
3354 cfilter->flags = vcf->field_flags;
3355
3356 /* Adding cloud filter programmed as TC filter */
3357 if (tcf.dst_port)
3358 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3359 else
3360 ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3361 if (ret) {
3362 dev_err(&pf->pdev->dev,
3363 "VF %d: Failed to add cloud filter, err %s aq_err %s\n",
3364 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3365 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3366 goto err;
3367 }
3368
3369 INIT_HLIST_NODE(&cfilter->cloud_node);
3370 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3371 vf->num_cloud_filters++;
3372err:
3373 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
3374 aq_ret);
3375}
3376
3377/**
3378 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
3379 * @vf: pointer to the VF info
3380 * @msg: pointer to the msg buffer
3381 **/
3382static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
3383{
3384 struct virtchnl_tc_info *tci =
3385 (struct virtchnl_tc_info *)msg;
3386 struct i40e_pf *pf = vf->pf;
3387 struct i40e_link_status *ls = &pf->hw.phy.link_info;
3388 int i, adq_request_qps = 0, speed = 0;
3389 i40e_status aq_ret = 0;
3390
3391 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3392 aq_ret = I40E_ERR_PARAM;
3393 goto err;
3394 }
3395
3396 /* ADq cannot be applied if spoof check is ON */
3397 if (vf->spoofchk) {
3398 dev_err(&pf->pdev->dev,
3399 "Spoof check is ON, turn it OFF to enable ADq\n");
3400 aq_ret = I40E_ERR_PARAM;
3401 goto err;
3402 }
3403
3404 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
3405 dev_err(&pf->pdev->dev,
3406 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
3407 vf->vf_id);
3408 aq_ret = I40E_ERR_PARAM;
3409 goto err;
3410 }
3411
3412 /* max number of traffic classes for VF currently capped at 4 */
3413 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
3414 dev_err(&pf->pdev->dev,
3415 "VF %d trying to set %u TCs, valid range 1-4 TCs per VF\n",
3416 vf->vf_id, tci->num_tc);
3417 aq_ret = I40E_ERR_PARAM;
3418 goto err;
3419 }
3420
3421 /* validate queues for each TC */
3422 for (i = 0; i < tci->num_tc; i++)
3423 if (!tci->list[i].count ||
3424 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
3425 dev_err(&pf->pdev->dev,
3426 "VF %d: TC %d trying to set %u queues, valid range 1-4 queues per TC\n",
3427 vf->vf_id, i, tci->list[i].count);
3428 aq_ret = I40E_ERR_PARAM;
3429 goto err;
3430 }
3431
3432 /* need Max VF queues but already have default number of queues */
3433 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
3434
3435 if (pf->queues_left < adq_request_qps) {
3436 dev_err(&pf->pdev->dev,
3437 "No queues left to allocate to VF %d\n",
3438 vf->vf_id);
3439 aq_ret = I40E_ERR_PARAM;
3440 goto err;
3441 } else {
3442 /* we need to allocate max VF queues to enable ADq so as to
3443 * make sure ADq enabled VF always gets back queues when it
3444 * goes through a reset.
3445 */
3446 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
3447 }
3448
3449 /* get link speed in MB to validate rate limit */
3450 switch (ls->link_speed) {
3451 case VIRTCHNL_LINK_SPEED_100MB:
3452 speed = SPEED_100;
3453 break;
3454 case VIRTCHNL_LINK_SPEED_1GB:
3455 speed = SPEED_1000;
3456 break;
3457 case VIRTCHNL_LINK_SPEED_10GB:
3458 speed = SPEED_10000;
3459 break;
3460 case VIRTCHNL_LINK_SPEED_20GB:
3461 speed = SPEED_20000;
3462 break;
3463 case VIRTCHNL_LINK_SPEED_25GB:
3464 speed = SPEED_25000;
3465 break;
3466 case VIRTCHNL_LINK_SPEED_40GB:
3467 speed = SPEED_40000;
3468 break;
3469 default:
3470 dev_err(&pf->pdev->dev,
3471 "Cannot detect link speed\n");
3472 aq_ret = I40E_ERR_PARAM;
3473 goto err;
3474 }
3475
3476 /* parse data from the queue channel info */
3477 vf->num_tc = tci->num_tc;
3478 for (i = 0; i < vf->num_tc; i++) {
3479 if (tci->list[i].max_tx_rate) {
3480 if (tci->list[i].max_tx_rate > speed) {
3481 dev_err(&pf->pdev->dev,
3482 "Invalid max tx rate %llu specified for VF %d.",
3483 tci->list[i].max_tx_rate,
3484 vf->vf_id);
3485 aq_ret = I40E_ERR_PARAM;
3486 goto err;
3487 } else {
3488 vf->ch[i].max_tx_rate =
3489 tci->list[i].max_tx_rate;
3490 }
3491 }
3492 vf->ch[i].num_qps = tci->list[i].count;
3493 }
3494
3495 /* set this flag only after making sure all inputs are sane */
3496 vf->adq_enabled = true;
3497 /* num_req_queues is set when user changes number of queues via ethtool
3498 * and this causes issue for default VSI(which depends on this variable)
3499 * when ADq is enabled, hence reset it.
3500 */
3501 vf->num_req_queues = 0;
3502
3503 /* reset the VF in order to allocate resources */
3504 i40e_vc_notify_vf_reset(vf);
3505 i40e_reset_vf(vf, false);
3506
3507 return I40E_SUCCESS;
3508
3509 /* send the response to the VF */
3510err:
3511 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
3512 aq_ret);
3513}
3514
3515/**
3516 * i40e_vc_del_qch_msg
3517 * @vf: pointer to the VF info
3518 * @msg: pointer to the msg buffer
3519 **/
3520static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
3521{
3522 struct i40e_pf *pf = vf->pf;
3523 i40e_status aq_ret = 0;
3524
3525 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3526 aq_ret = I40E_ERR_PARAM;
3527 goto err;
3528 }
3529
3530 if (vf->adq_enabled) {
3531 i40e_del_all_cloud_filters(vf);
3532 i40e_del_qch(vf);
3533 vf->adq_enabled = false;
3534 vf->num_tc = 0;
3535 dev_info(&pf->pdev->dev,
3536 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
3537 vf->vf_id);
3538 } else {
3539 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
3540 vf->vf_id);
3541 aq_ret = I40E_ERR_PARAM;
3542 }
3543
3544 /* reset the VF in order to allocate resources */
3545 i40e_vc_notify_vf_reset(vf);
3546 i40e_reset_vf(vf, false);
3547
3548 return I40E_SUCCESS;
3549
3550err:
3551 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
3552 aq_ret);
3553}
3554
3555/**
3556 * i40e_vc_process_vf_msg
3557 * @pf: pointer to the PF structure
3558 * @vf_id: source VF id
3559 * @msg: pointer to the msg buffer
3560 * @msglen: msg length
3561 * @msghndl: msg handle
3562 *
3563 * called from the common aeq/arq handler to
3564 * process request from VF
3565 **/
3566int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
3567 u32 v_retval, u8 *msg, u16 msglen)
3568{
3569 struct i40e_hw *hw = &pf->hw;
3570 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
3571 struct i40e_vf *vf;
3572 int ret;
3573
3574 pf->vf_aq_requests++;
3575 if (local_vf_id >= pf->num_alloc_vfs)
3576 return -EINVAL;
3577 vf = &(pf->vf[local_vf_id]);
3578
3579 /* Check if VF is disabled. */
3580 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
3581 return I40E_ERR_PARAM;
3582
3583 /* perform basic checks on the msg */
3584 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
3585
3586 /* perform additional checks specific to this driver */
3587 if (v_opcode == VIRTCHNL_OP_CONFIG_RSS_KEY) {
3588 struct virtchnl_rss_key *vrk = (struct virtchnl_rss_key *)msg;
3589
3590 if (vrk->key_len != I40E_HKEY_ARRAY_SIZE)
3591 ret = -EINVAL;
3592 } else if (v_opcode == VIRTCHNL_OP_CONFIG_RSS_LUT) {
3593 struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg;
3594
3595 if (vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE)
3596 ret = -EINVAL;
3597 }
3598
3599 if (ret) {
3600 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
3601 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
3602 local_vf_id, v_opcode, msglen);
3603 switch (ret) {
3604 case VIRTCHNL_ERR_PARAM:
3605 return -EPERM;
3606 default:
3607 return -EINVAL;
3608 }
3609 }
3610
3611 switch (v_opcode) {
3612 case VIRTCHNL_OP_VERSION:
3613 ret = i40e_vc_get_version_msg(vf, msg);
3614 break;
3615 case VIRTCHNL_OP_GET_VF_RESOURCES:
3616 ret = i40e_vc_get_vf_resources_msg(vf, msg);
3617 i40e_vc_notify_vf_link_state(vf);
3618 break;
3619 case VIRTCHNL_OP_RESET_VF:
3620 i40e_vc_reset_vf_msg(vf);
3621 ret = 0;
3622 break;
3623 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
3624 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen);
3625 break;
3626 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
3627 ret = i40e_vc_config_queues_msg(vf, msg, msglen);
3628 break;
3629 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
3630 ret = i40e_vc_config_irq_map_msg(vf, msg, msglen);
3631 break;
3632 case VIRTCHNL_OP_ENABLE_QUEUES:
3633 ret = i40e_vc_enable_queues_msg(vf, msg, msglen);
3634 i40e_vc_notify_vf_link_state(vf);
3635 break;
3636 case VIRTCHNL_OP_DISABLE_QUEUES:
3637 ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
3638 break;
3639 case VIRTCHNL_OP_ADD_ETH_ADDR:
3640 ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen);
3641 break;
3642 case VIRTCHNL_OP_DEL_ETH_ADDR:
3643 ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen);
3644 break;
3645 case VIRTCHNL_OP_ADD_VLAN:
3646 ret = i40e_vc_add_vlan_msg(vf, msg, msglen);
3647 break;
3648 case VIRTCHNL_OP_DEL_VLAN:
3649 ret = i40e_vc_remove_vlan_msg(vf, msg, msglen);
3650 break;
3651 case VIRTCHNL_OP_GET_STATS:
3652 ret = i40e_vc_get_stats_msg(vf, msg, msglen);
3653 break;
3654 case VIRTCHNL_OP_IWARP:
3655 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
3656 break;
3657 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
3658 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, true);
3659 break;
3660 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
3661 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, false);
3662 break;
3663 case VIRTCHNL_OP_CONFIG_RSS_KEY:
3664 ret = i40e_vc_config_rss_key(vf, msg, msglen);
3665 break;
3666 case VIRTCHNL_OP_CONFIG_RSS_LUT:
3667 ret = i40e_vc_config_rss_lut(vf, msg, msglen);
3668 break;
3669 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
3670 ret = i40e_vc_get_rss_hena(vf, msg, msglen);
3671 break;
3672 case VIRTCHNL_OP_SET_RSS_HENA:
3673 ret = i40e_vc_set_rss_hena(vf, msg, msglen);
3674 break;
3675 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
3676 ret = i40e_vc_enable_vlan_stripping(vf, msg, msglen);
3677 break;
3678 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
3679 ret = i40e_vc_disable_vlan_stripping(vf, msg, msglen);
3680 break;
3681 case VIRTCHNL_OP_REQUEST_QUEUES:
3682 ret = i40e_vc_request_queues_msg(vf, msg, msglen);
3683 break;
3684 case VIRTCHNL_OP_ENABLE_CHANNELS:
3685 ret = i40e_vc_add_qch_msg(vf, msg);
3686 break;
3687 case VIRTCHNL_OP_DISABLE_CHANNELS:
3688 ret = i40e_vc_del_qch_msg(vf, msg);
3689 break;
3690 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
3691 ret = i40e_vc_add_cloud_filter(vf, msg);
3692 break;
3693 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
3694 ret = i40e_vc_del_cloud_filter(vf, msg);
3695 break;
3696 case VIRTCHNL_OP_UNKNOWN:
3697 default:
3698 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
3699 v_opcode, local_vf_id);
3700 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
3701 I40E_ERR_NOT_IMPLEMENTED);
3702 break;
3703 }
3704
3705 return ret;
3706}
3707
3708/**
3709 * i40e_vc_process_vflr_event
3710 * @pf: pointer to the PF structure
3711 *
3712 * called from the vlfr irq handler to
3713 * free up VF resources and state variables
3714 **/
3715int i40e_vc_process_vflr_event(struct i40e_pf *pf)
3716{
3717 struct i40e_hw *hw = &pf->hw;
3718 u32 reg, reg_idx, bit_idx;
3719 struct i40e_vf *vf;
3720 int vf_id;
3721
3722 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
3723 return 0;
3724
3725 /* Re-enable the VFLR interrupt cause here, before looking for which
3726 * VF got reset. Otherwise, if another VF gets a reset while the
3727 * first one is being processed, that interrupt will be lost, and
3728 * that VF will be stuck in reset forever.
3729 */
3730 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
3731 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
3732 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
3733 i40e_flush(hw);
3734
3735 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
3736 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
3737 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
3738 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
3739 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
3740 vf = &pf->vf[vf_id];
3741 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
3742 if (reg & BIT(bit_idx))
3743 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
3744 i40e_reset_vf(vf, true);
3745 }
3746
3747 return 0;
3748}
3749
3750/**
3751 * i40e_ndo_set_vf_mac
3752 * @netdev: network interface device structure
3753 * @vf_id: VF identifier
3754 * @mac: mac address
3755 *
3756 * program VF mac address
3757 **/
3758int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
3759{
3760 struct i40e_netdev_priv *np = netdev_priv(netdev);
3761 struct i40e_vsi *vsi = np->vsi;
3762 struct i40e_pf *pf = vsi->back;
3763 struct i40e_mac_filter *f;
3764 struct i40e_vf *vf;
3765 int ret = 0;
3766 struct hlist_node *h;
3767 int bkt;
3768 u8 i;
3769
3770 /* validate the request */
3771 if (vf_id >= pf->num_alloc_vfs) {
3772 dev_err(&pf->pdev->dev,
3773 "Invalid VF Identifier %d\n", vf_id);
3774 ret = -EINVAL;
3775 goto error_param;
3776 }
3777
3778 vf = &(pf->vf[vf_id]);
3779 vsi = pf->vsi[vf->lan_vsi_idx];
3780
3781 /* When the VF is resetting wait until it is done.
3782 * It can take up to 200 milliseconds,
3783 * but wait for up to 300 milliseconds to be safe.
3784 */
3785 for (i = 0; i < 15; i++) {
3786 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
3787 break;
3788 msleep(20);
3789 }
3790 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
3791 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
3792 vf_id);
3793 ret = -EAGAIN;
3794 goto error_param;
3795 }
3796
3797 if (is_multicast_ether_addr(mac)) {
3798 dev_err(&pf->pdev->dev,
3799 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
3800 ret = -EINVAL;
3801 goto error_param;
3802 }
3803
3804 /* Lock once because below invoked function add/del_filter requires
3805 * mac_filter_hash_lock to be held
3806 */
3807 spin_lock_bh(&vsi->mac_filter_hash_lock);
3808
3809 /* delete the temporary mac address */
3810 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
3811 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
3812
3813 /* Delete all the filters for this VSI - we're going to kill it
3814 * anyway.
3815 */
3816 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
3817 __i40e_del_filter(vsi, f);
3818
3819 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3820
3821 /* program mac filter */
3822 if (i40e_sync_vsi_filters(vsi)) {
3823 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
3824 ret = -EIO;
3825 goto error_param;
3826 }
3827 ether_addr_copy(vf->default_lan_addr.addr, mac);
3828
3829 if (is_zero_ether_addr(mac)) {
3830 vf->pf_set_mac = false;
3831 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
3832 } else {
3833 vf->pf_set_mac = true;
3834 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
3835 mac, vf_id);
3836 }
3837
3838 /* Force the VF driver stop so it has to reload with new MAC address */
3839 i40e_vc_disable_vf(vf);
3840 dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");
3841
3842error_param:
3843 return ret;
3844}
3845
3846/**
3847 * i40e_vsi_has_vlans - True if VSI has configured VLANs
3848 * @vsi: pointer to the vsi
3849 *
3850 * Check if a VSI has configured any VLANs. False if we have a port VLAN or if
3851 * we have no configured VLANs. Do not call while holding the
3852 * mac_filter_hash_lock.
3853 */
3854static bool i40e_vsi_has_vlans(struct i40e_vsi *vsi)
3855{
3856 bool have_vlans;
3857
3858 /* If we have a port VLAN, then the VSI cannot have any VLANs
3859 * configured, as all MAC/VLAN filters will be assigned to the PVID.
3860 */
3861 if (vsi->info.pvid)
3862 return false;
3863
3864 /* Since we don't have a PVID, we know that if the device is in VLAN
3865 * mode it must be because of a VLAN filter configured on this VSI.
3866 */
3867 spin_lock_bh(&vsi->mac_filter_hash_lock);
3868 have_vlans = i40e_is_vsi_in_vlan(vsi);
3869 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3870
3871 return have_vlans;
3872}
3873
3874/**
3875 * i40e_ndo_set_vf_port_vlan
3876 * @netdev: network interface device structure
3877 * @vf_id: VF identifier
3878 * @vlan_id: mac address
3879 * @qos: priority setting
3880 * @vlan_proto: vlan protocol
3881 *
3882 * program VF vlan id and/or qos
3883 **/
3884int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
3885 u16 vlan_id, u8 qos, __be16 vlan_proto)
3886{
3887 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
3888 struct i40e_netdev_priv *np = netdev_priv(netdev);
3889 struct i40e_pf *pf = np->vsi->back;
3890 struct i40e_vsi *vsi;
3891 struct i40e_vf *vf;
3892 int ret = 0;
3893
3894 /* validate the request */
3895 if (vf_id >= pf->num_alloc_vfs) {
3896 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
3897 ret = -EINVAL;
3898 goto error_pvid;
3899 }
3900
3901 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
3902 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
3903 ret = -EINVAL;
3904 goto error_pvid;
3905 }
3906
3907 if (vlan_proto != htons(ETH_P_8021Q)) {
3908 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
3909 ret = -EPROTONOSUPPORT;
3910 goto error_pvid;
3911 }
3912
3913 vf = &(pf->vf[vf_id]);
3914 vsi = pf->vsi[vf->lan_vsi_idx];
3915 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
3916 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
3917 vf_id);
3918 ret = -EAGAIN;
3919 goto error_pvid;
3920 }
3921
3922 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
3923 /* duplicate request, so just return success */
3924 goto error_pvid;
3925
3926 if (i40e_vsi_has_vlans(vsi)) {
3927 dev_err(&pf->pdev->dev,
3928 "VF %d has already configured VLAN filters and the administrator is requesting a port VLAN override.\nPlease unload and reload the VF driver for this change to take effect.\n",
3929 vf_id);
3930 /* Administrator Error - knock the VF offline until he does
3931 * the right thing by reconfiguring his network correctly
3932 * and then reloading the VF driver.
3933 */
3934 i40e_vc_disable_vf(vf);
3935 /* During reset the VF got a new VSI, so refresh the pointer. */
3936 vsi = pf->vsi[vf->lan_vsi_idx];
3937 }
3938
3939 /* Locked once because multiple functions below iterate list */
3940 spin_lock_bh(&vsi->mac_filter_hash_lock);
3941
3942 /* Check for condition where there was already a port VLAN ID
3943 * filter set and now it is being deleted by setting it to zero.
3944 * Additionally check for the condition where there was a port
3945 * VLAN but now there is a new and different port VLAN being set.
3946 * Before deleting all the old VLAN filters we must add new ones
3947 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
3948 * MAC addresses deleted.
3949 */
3950 if ((!(vlan_id || qos) ||
3951 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
3952 vsi->info.pvid) {
3953 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
3954 if (ret) {
3955 dev_info(&vsi->back->pdev->dev,
3956 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
3957 vsi->back->hw.aq.asq_last_status);
3958 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3959 goto error_pvid;
3960 }
3961 }
3962
3963 if (vsi->info.pvid) {
3964 /* remove all filters on the old VLAN */
3965 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
3966 VLAN_VID_MASK));
3967 }
3968
3969 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3970 if (vlan_id || qos)
3971 ret = i40e_vsi_add_pvid(vsi, vlanprio);
3972 else
3973 i40e_vsi_remove_pvid(vsi);
3974 spin_lock_bh(&vsi->mac_filter_hash_lock);
3975
3976 if (vlan_id) {
3977 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
3978 vlan_id, qos, vf_id);
3979
3980 /* add new VLAN filter for each MAC */
3981 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
3982 if (ret) {
3983 dev_info(&vsi->back->pdev->dev,
3984 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
3985 vsi->back->hw.aq.asq_last_status);
3986 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3987 goto error_pvid;
3988 }
3989
3990 /* remove the previously added non-VLAN MAC filters */
3991 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
3992 }
3993
3994 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3995
3996 /* Schedule the worker thread to take care of applying changes */
3997 i40e_service_event_schedule(vsi->back);
3998
3999 if (ret) {
4000 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4001 goto error_pvid;
4002 }
4003
4004 /* The Port VLAN needs to be saved across resets the same as the
4005 * default LAN MAC address.
4006 */
4007 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4008 ret = 0;
4009
4010error_pvid:
4011 return ret;
4012}
4013
4014/**
4015 * i40e_ndo_set_vf_bw
4016 * @netdev: network interface device structure
4017 * @vf_id: VF identifier
4018 * @tx_rate: Tx rate
4019 *
4020 * configure VF Tx rate
4021 **/
4022int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4023 int max_tx_rate)
4024{
4025 struct i40e_netdev_priv *np = netdev_priv(netdev);
4026 struct i40e_pf *pf = np->vsi->back;
4027 struct i40e_vsi *vsi;
4028 struct i40e_vf *vf;
4029 int ret = 0;
4030
4031 /* validate the request */
4032 if (vf_id >= pf->num_alloc_vfs) {
4033 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d.\n", vf_id);
4034 ret = -EINVAL;
4035 goto error;
4036 }
4037
4038 if (min_tx_rate) {
4039 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4040 min_tx_rate, vf_id);
4041 return -EINVAL;
4042 }
4043
4044 vf = &(pf->vf[vf_id]);
4045 vsi = pf->vsi[vf->lan_vsi_idx];
4046 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4047 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4048 vf_id);
4049 ret = -EAGAIN;
4050 goto error;
4051 }
4052
4053 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4054 if (ret)
4055 goto error;
4056
4057 vf->tx_rate = max_tx_rate;
4058error:
4059 return ret;
4060}
4061
4062/**
4063 * i40e_ndo_get_vf_config
4064 * @netdev: network interface device structure
4065 * @vf_id: VF identifier
4066 * @ivi: VF configuration structure
4067 *
4068 * return VF configuration
4069 **/
4070int i40e_ndo_get_vf_config(struct net_device *netdev,
4071 int vf_id, struct ifla_vf_info *ivi)
4072{
4073 struct i40e_netdev_priv *np = netdev_priv(netdev);
4074 struct i40e_vsi *vsi = np->vsi;
4075 struct i40e_pf *pf = vsi->back;
4076 struct i40e_vf *vf;
4077 int ret = 0;
4078
4079 /* validate the request */
4080 if (vf_id >= pf->num_alloc_vfs) {
4081 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4082 ret = -EINVAL;
4083 goto error_param;
4084 }
4085
4086 vf = &(pf->vf[vf_id]);
4087 /* first vsi is always the LAN vsi */
4088 vsi = pf->vsi[vf->lan_vsi_idx];
4089 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4090 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4091 vf_id);
4092 ret = -EAGAIN;
4093 goto error_param;
4094 }
4095
4096 ivi->vf = vf_id;
4097
4098 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4099
4100 ivi->max_tx_rate = vf->tx_rate;
4101 ivi->min_tx_rate = 0;
4102 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
4103 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
4104 I40E_VLAN_PRIORITY_SHIFT;
4105 if (vf->link_forced == false)
4106 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4107 else if (vf->link_up == true)
4108 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4109 else
4110 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4111 ivi->spoofchk = vf->spoofchk;
4112 ivi->trusted = vf->trusted;
4113 ret = 0;
4114
4115error_param:
4116 return ret;
4117}
4118
4119/**
4120 * i40e_ndo_set_vf_link_state
4121 * @netdev: network interface device structure
4122 * @vf_id: VF identifier
4123 * @link: required link state
4124 *
4125 * Set the link state of a specified VF, regardless of physical link state
4126 **/
4127int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4128{
4129 struct i40e_netdev_priv *np = netdev_priv(netdev);
4130 struct i40e_pf *pf = np->vsi->back;
4131 struct virtchnl_pf_event pfe;
4132 struct i40e_hw *hw = &pf->hw;
4133 struct i40e_vf *vf;
4134 int abs_vf_id;
4135 int ret = 0;
4136
4137 /* validate the request */
4138 if (vf_id >= pf->num_alloc_vfs) {
4139 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4140 ret = -EINVAL;
4141 goto error_out;
4142 }
4143
4144 vf = &pf->vf[vf_id];
4145 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4146
4147 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4148 pfe.severity = PF_EVENT_SEVERITY_INFO;
4149
4150 switch (link) {
4151 case IFLA_VF_LINK_STATE_AUTO:
4152 vf->link_forced = false;
4153 pfe.event_data.link_event.link_status =
4154 pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
4155 pfe.event_data.link_event.link_speed =
4156 (enum virtchnl_link_speed)
4157 pf->hw.phy.link_info.link_speed;
4158 break;
4159 case IFLA_VF_LINK_STATE_ENABLE:
4160 vf->link_forced = true;
4161 vf->link_up = true;
4162 pfe.event_data.link_event.link_status = true;
4163 pfe.event_data.link_event.link_speed = I40E_LINK_SPEED_40GB;
4164 break;
4165 case IFLA_VF_LINK_STATE_DISABLE:
4166 vf->link_forced = true;
4167 vf->link_up = false;
4168 pfe.event_data.link_event.link_status = false;
4169 pfe.event_data.link_event.link_speed = 0;
4170 break;
4171 default:
4172 ret = -EINVAL;
4173 goto error_out;
4174 }
4175 /* Notify the VF of its new link state */
4176 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4177 0, (u8 *)&pfe, sizeof(pfe), NULL);
4178
4179error_out:
4180 return ret;
4181}
4182
4183/**
4184 * i40e_ndo_set_vf_spoofchk
4185 * @netdev: network interface device structure
4186 * @vf_id: VF identifier
4187 * @enable: flag to enable or disable feature
4188 *
4189 * Enable or disable VF spoof checking
4190 **/
4191int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4192{
4193 struct i40e_netdev_priv *np = netdev_priv(netdev);
4194 struct i40e_vsi *vsi = np->vsi;
4195 struct i40e_pf *pf = vsi->back;
4196 struct i40e_vsi_context ctxt;
4197 struct i40e_hw *hw = &pf->hw;
4198 struct i40e_vf *vf;
4199 int ret = 0;
4200
4201 /* validate the request */
4202 if (vf_id >= pf->num_alloc_vfs) {
4203 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4204 ret = -EINVAL;
4205 goto out;
4206 }
4207
4208 vf = &(pf->vf[vf_id]);
4209 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4210 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4211 vf_id);
4212 ret = -EAGAIN;
4213 goto out;
4214 }
4215
4216 if (enable == vf->spoofchk)
4217 goto out;
4218
4219 vf->spoofchk = enable;
4220 memset(&ctxt, 0, sizeof(ctxt));
4221 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4222 ctxt.pf_num = pf->hw.pf_id;
4223 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4224 if (enable)
4225 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4226 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4227 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4228 if (ret) {
4229 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4230 ret);
4231 ret = -EIO;
4232 }
4233out:
4234 return ret;
4235}
4236
4237/**
4238 * i40e_ndo_set_vf_trust
4239 * @netdev: network interface device structure of the pf
4240 * @vf_id: VF identifier
4241 * @setting: trust setting
4242 *
4243 * Enable or disable VF trust setting
4244 **/
4245int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4246{
4247 struct i40e_netdev_priv *np = netdev_priv(netdev);
4248 struct i40e_pf *pf = np->vsi->back;
4249 struct i40e_vf *vf;
4250 int ret = 0;
4251
4252 /* validate the request */
4253 if (vf_id >= pf->num_alloc_vfs) {
4254 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4255 return -EINVAL;
4256 }
4257
4258 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4259 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4260 return -EINVAL;
4261 }
4262
4263 vf = &pf->vf[vf_id];
4264
4265 if (setting == vf->trusted)
4266 goto out;
4267
4268 vf->trusted = setting;
4269 i40e_vc_disable_vf(vf);
4270 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4271 vf_id, setting ? "" : "un");
4272
4273 if (vf->adq_enabled) {
4274 if (!vf->trusted) {
4275 dev_info(&pf->pdev->dev,
4276 "VF %u no longer Trusted, deleting all cloud filters\n",
4277 vf_id);
4278 i40e_del_all_cloud_filters(vf);
4279 }
4280 }
4281
4282out:
4283 return ret;
4284}
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_vsi *main_vsi, *vsi;
799 struct i40e_pf *pf = vf->pf;
800 u64 max_tx_rate = 0;
801 int ret = 0;
802
803 main_vsi = i40e_pf_get_main_vsi(pf);
804 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, main_vsi->seid, 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 spin_lock_bh(&vsi->mac_filter_hash_lock);
2217 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
2218 eth_zero_addr(vf->default_lan_addr.addr);
2219 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2220 }
2221 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2222 vf->default_lan_addr.addr);
2223 }
2224 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2225
2226err:
2227 /* send the response back to the VF */
2228 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2229 aq_ret, (u8 *)vfres, len);
2230
2231 kfree(vfres);
2232 return ret;
2233}
2234
2235/**
2236 * i40e_vc_config_promiscuous_mode_msg
2237 * @vf: pointer to the VF info
2238 * @msg: pointer to the msg buffer
2239 *
2240 * called from the VF to configure the promiscuous mode of
2241 * VF vsis
2242 **/
2243static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2244{
2245 struct virtchnl_promisc_info *info =
2246 (struct virtchnl_promisc_info *)msg;
2247 struct i40e_pf *pf = vf->pf;
2248 bool allmulti = false;
2249 bool alluni = false;
2250 int aq_ret = 0;
2251
2252 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2253 aq_ret = -EINVAL;
2254 goto err_out;
2255 }
2256 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2257 dev_err(&pf->pdev->dev,
2258 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2259 vf->vf_id);
2260
2261 /* Lie to the VF on purpose, because this is an error we can
2262 * ignore. Unprivileged VF is not a virtual channel error.
2263 */
2264 aq_ret = 0;
2265 goto err_out;
2266 }
2267
2268 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2269 aq_ret = -EINVAL;
2270 goto err_out;
2271 }
2272
2273 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2274 aq_ret = -EINVAL;
2275 goto err_out;
2276 }
2277
2278 /* Multicast promiscuous handling*/
2279 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2280 allmulti = true;
2281
2282 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2283 alluni = true;
2284 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2285 alluni);
2286 if (aq_ret)
2287 goto err_out;
2288
2289 if (allmulti) {
2290 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2291 &vf->vf_states))
2292 dev_info(&pf->pdev->dev,
2293 "VF %d successfully set multicast promiscuous mode\n",
2294 vf->vf_id);
2295 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2296 &vf->vf_states))
2297 dev_info(&pf->pdev->dev,
2298 "VF %d successfully unset multicast promiscuous mode\n",
2299 vf->vf_id);
2300
2301 if (alluni) {
2302 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2303 &vf->vf_states))
2304 dev_info(&pf->pdev->dev,
2305 "VF %d successfully set unicast promiscuous mode\n",
2306 vf->vf_id);
2307 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2308 &vf->vf_states))
2309 dev_info(&pf->pdev->dev,
2310 "VF %d successfully unset unicast promiscuous mode\n",
2311 vf->vf_id);
2312
2313err_out:
2314 /* send the response to the VF */
2315 return i40e_vc_send_resp_to_vf(vf,
2316 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2317 aq_ret);
2318}
2319
2320/**
2321 * i40e_vc_config_queues_msg
2322 * @vf: pointer to the VF info
2323 * @msg: pointer to the msg buffer
2324 *
2325 * called from the VF to configure the rx/tx
2326 * queues
2327 **/
2328static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2329{
2330 struct virtchnl_vsi_queue_config_info *qci =
2331 (struct virtchnl_vsi_queue_config_info *)msg;
2332 struct virtchnl_queue_pair_info *qpi;
2333 u16 vsi_id, vsi_queue_id = 0;
2334 struct i40e_pf *pf = vf->pf;
2335 int i, j = 0, idx = 0;
2336 struct i40e_vsi *vsi;
2337 u16 num_qps_all = 0;
2338 int aq_ret = 0;
2339
2340 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2341 aq_ret = -EINVAL;
2342 goto error_param;
2343 }
2344
2345 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2346 aq_ret = -EINVAL;
2347 goto error_param;
2348 }
2349
2350 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2351 aq_ret = -EINVAL;
2352 goto error_param;
2353 }
2354
2355 if (vf->adq_enabled) {
2356 for (i = 0; i < vf->num_tc; i++)
2357 num_qps_all += vf->ch[i].num_qps;
2358 if (num_qps_all != qci->num_queue_pairs) {
2359 aq_ret = -EINVAL;
2360 goto error_param;
2361 }
2362 }
2363
2364 vsi_id = qci->vsi_id;
2365
2366 for (i = 0; i < qci->num_queue_pairs; i++) {
2367 qpi = &qci->qpair[i];
2368
2369 if (!vf->adq_enabled) {
2370 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2371 qpi->txq.queue_id)) {
2372 aq_ret = -EINVAL;
2373 goto error_param;
2374 }
2375
2376 vsi_queue_id = qpi->txq.queue_id;
2377
2378 if (qpi->txq.vsi_id != qci->vsi_id ||
2379 qpi->rxq.vsi_id != qci->vsi_id ||
2380 qpi->rxq.queue_id != vsi_queue_id) {
2381 aq_ret = -EINVAL;
2382 goto error_param;
2383 }
2384 }
2385
2386 if (vf->adq_enabled) {
2387 if (idx >= ARRAY_SIZE(vf->ch)) {
2388 aq_ret = -ENODEV;
2389 goto error_param;
2390 }
2391 vsi_id = vf->ch[idx].vsi_id;
2392 }
2393
2394 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2395 &qpi->rxq) ||
2396 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2397 &qpi->txq)) {
2398 aq_ret = -EINVAL;
2399 goto error_param;
2400 }
2401
2402 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2403 * VF does not know about these additional VSIs and all
2404 * it cares is about its own queues. PF configures these queues
2405 * to its appropriate VSIs based on TC mapping
2406 */
2407 if (vf->adq_enabled) {
2408 if (idx >= ARRAY_SIZE(vf->ch)) {
2409 aq_ret = -ENODEV;
2410 goto error_param;
2411 }
2412 if (j == (vf->ch[idx].num_qps - 1)) {
2413 idx++;
2414 j = 0; /* resetting the queue count */
2415 vsi_queue_id = 0;
2416 } else {
2417 j++;
2418 vsi_queue_id++;
2419 }
2420 }
2421 }
2422 /* set vsi num_queue_pairs in use to num configured by VF */
2423 if (!vf->adq_enabled) {
2424 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2425 qci->num_queue_pairs;
2426 } else {
2427 for (i = 0; i < vf->num_tc; i++) {
2428 vsi = pf->vsi[vf->ch[i].vsi_idx];
2429 vsi->num_queue_pairs = vf->ch[i].num_qps;
2430
2431 if (i40e_update_adq_vsi_queues(vsi, i)) {
2432 aq_ret = -EIO;
2433 goto error_param;
2434 }
2435 }
2436 }
2437
2438error_param:
2439 /* send the response to the VF */
2440 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2441 aq_ret);
2442}
2443
2444/**
2445 * i40e_validate_queue_map - check queue map is valid
2446 * @vf: the VF structure pointer
2447 * @vsi_id: vsi id
2448 * @queuemap: Tx or Rx queue map
2449 *
2450 * check if Tx or Rx queue map is valid
2451 **/
2452static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2453 unsigned long queuemap)
2454{
2455 u16 vsi_queue_id, queue_id;
2456
2457 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2458 if (vf->adq_enabled) {
2459 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2460 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2461 } else {
2462 queue_id = vsi_queue_id;
2463 }
2464
2465 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2466 return -EINVAL;
2467 }
2468
2469 return 0;
2470}
2471
2472/**
2473 * i40e_vc_config_irq_map_msg
2474 * @vf: pointer to the VF info
2475 * @msg: pointer to the msg buffer
2476 *
2477 * called from the VF to configure the irq to
2478 * queue map
2479 **/
2480static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2481{
2482 struct virtchnl_irq_map_info *irqmap_info =
2483 (struct virtchnl_irq_map_info *)msg;
2484 struct virtchnl_vector_map *map;
2485 int aq_ret = 0;
2486 u16 vsi_id;
2487 int i;
2488
2489 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2490 aq_ret = -EINVAL;
2491 goto error_param;
2492 }
2493
2494 if (irqmap_info->num_vectors >
2495 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2496 aq_ret = -EINVAL;
2497 goto error_param;
2498 }
2499
2500 for (i = 0; i < irqmap_info->num_vectors; i++) {
2501 map = &irqmap_info->vecmap[i];
2502 /* validate msg params */
2503 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2504 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2505 aq_ret = -EINVAL;
2506 goto error_param;
2507 }
2508 vsi_id = map->vsi_id;
2509
2510 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2511 aq_ret = -EINVAL;
2512 goto error_param;
2513 }
2514
2515 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2516 aq_ret = -EINVAL;
2517 goto error_param;
2518 }
2519
2520 i40e_config_irq_link_list(vf, vsi_id, map);
2521 }
2522error_param:
2523 /* send the response to the VF */
2524 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2525 aq_ret);
2526}
2527
2528/**
2529 * i40e_ctrl_vf_tx_rings
2530 * @vsi: the SRIOV VSI being configured
2531 * @q_map: bit map of the queues to be enabled
2532 * @enable: start or stop the queue
2533 **/
2534static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2535 bool enable)
2536{
2537 struct i40e_pf *pf = vsi->back;
2538 int ret = 0;
2539 u16 q_id;
2540
2541 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2542 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2543 vsi->base_queue + q_id,
2544 false /*is xdp*/, enable);
2545 if (ret)
2546 break;
2547 }
2548 return ret;
2549}
2550
2551/**
2552 * i40e_ctrl_vf_rx_rings
2553 * @vsi: the SRIOV VSI being configured
2554 * @q_map: bit map of the queues to be enabled
2555 * @enable: start or stop the queue
2556 **/
2557static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2558 bool enable)
2559{
2560 struct i40e_pf *pf = vsi->back;
2561 int ret = 0;
2562 u16 q_id;
2563
2564 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2565 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2566 enable);
2567 if (ret)
2568 break;
2569 }
2570 return ret;
2571}
2572
2573/**
2574 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2575 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2576 *
2577 * Returns true if validation was successful, else false.
2578 */
2579static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2580{
2581 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2582 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2583 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2584 return false;
2585
2586 return true;
2587}
2588
2589/**
2590 * i40e_vc_enable_queues_msg
2591 * @vf: pointer to the VF info
2592 * @msg: pointer to the msg buffer
2593 *
2594 * called from the VF to enable all or specific queue(s)
2595 **/
2596static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2597{
2598 struct virtchnl_queue_select *vqs =
2599 (struct virtchnl_queue_select *)msg;
2600 struct i40e_pf *pf = vf->pf;
2601 int aq_ret = 0;
2602 int i;
2603
2604 if (vf->is_disabled_from_host) {
2605 aq_ret = -EPERM;
2606 dev_info(&pf->pdev->dev,
2607 "Admin has disabled VF %d, will not enable queues\n",
2608 vf->vf_id);
2609 goto error_param;
2610 }
2611
2612 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2613 aq_ret = -EINVAL;
2614 goto error_param;
2615 }
2616
2617 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2618 aq_ret = -EINVAL;
2619 goto error_param;
2620 }
2621
2622 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2623 aq_ret = -EINVAL;
2624 goto error_param;
2625 }
2626
2627 /* Use the queue bit map sent by the VF */
2628 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2629 true)) {
2630 aq_ret = -EIO;
2631 goto error_param;
2632 }
2633 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2634 true)) {
2635 aq_ret = -EIO;
2636 goto error_param;
2637 }
2638
2639 /* need to start the rings for additional ADq VSI's as well */
2640 if (vf->adq_enabled) {
2641 /* zero belongs to LAN VSI */
2642 for (i = 1; i < vf->num_tc; i++) {
2643 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2644 aq_ret = -EIO;
2645 }
2646 }
2647
2648error_param:
2649 /* send the response to the VF */
2650 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2651 aq_ret);
2652}
2653
2654/**
2655 * i40e_vc_disable_queues_msg
2656 * @vf: pointer to the VF info
2657 * @msg: pointer to the msg buffer
2658 *
2659 * called from the VF to disable all or specific
2660 * queue(s)
2661 **/
2662static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2663{
2664 struct virtchnl_queue_select *vqs =
2665 (struct virtchnl_queue_select *)msg;
2666 struct i40e_pf *pf = vf->pf;
2667 int aq_ret = 0;
2668
2669 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2670 aq_ret = -EINVAL;
2671 goto error_param;
2672 }
2673
2674 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2675 aq_ret = -EINVAL;
2676 goto error_param;
2677 }
2678
2679 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2680 aq_ret = -EINVAL;
2681 goto error_param;
2682 }
2683
2684 /* Use the queue bit map sent by the VF */
2685 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2686 false)) {
2687 aq_ret = -EIO;
2688 goto error_param;
2689 }
2690 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2691 false)) {
2692 aq_ret = -EIO;
2693 goto error_param;
2694 }
2695error_param:
2696 /* send the response to the VF */
2697 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2698 aq_ret);
2699}
2700
2701/**
2702 * i40e_check_enough_queue - find big enough queue number
2703 * @vf: pointer to the VF info
2704 * @needed: the number of items needed
2705 *
2706 * Returns the base item index of the queue, or negative for error
2707 **/
2708static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2709{
2710 unsigned int i, cur_queues, more, pool_size;
2711 struct i40e_lump_tracking *pile;
2712 struct i40e_pf *pf = vf->pf;
2713 struct i40e_vsi *vsi;
2714
2715 vsi = pf->vsi[vf->lan_vsi_idx];
2716 cur_queues = vsi->alloc_queue_pairs;
2717
2718 /* if current allocated queues are enough for need */
2719 if (cur_queues >= needed)
2720 return vsi->base_queue;
2721
2722 pile = pf->qp_pile;
2723 if (cur_queues > 0) {
2724 /* if the allocated queues are not zero
2725 * just check if there are enough queues for more
2726 * behind the allocated queues.
2727 */
2728 more = needed - cur_queues;
2729 for (i = vsi->base_queue + cur_queues;
2730 i < pile->num_entries; i++) {
2731 if (pile->list[i] & I40E_PILE_VALID_BIT)
2732 break;
2733
2734 if (more-- == 1)
2735 /* there is enough */
2736 return vsi->base_queue;
2737 }
2738 }
2739
2740 pool_size = 0;
2741 for (i = 0; i < pile->num_entries; i++) {
2742 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2743 pool_size = 0;
2744 continue;
2745 }
2746 if (needed <= ++pool_size)
2747 /* there is enough */
2748 return i;
2749 }
2750
2751 return -ENOMEM;
2752}
2753
2754/**
2755 * i40e_vc_request_queues_msg
2756 * @vf: pointer to the VF info
2757 * @msg: pointer to the msg buffer
2758 *
2759 * VFs get a default number of queues but can use this message to request a
2760 * different number. If the request is successful, PF will reset the VF and
2761 * return 0. If unsuccessful, PF will send message informing VF of number of
2762 * available queues and return result of sending VF a message.
2763 **/
2764static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2765{
2766 struct virtchnl_vf_res_request *vfres =
2767 (struct virtchnl_vf_res_request *)msg;
2768 u16 req_pairs = vfres->num_queue_pairs;
2769 u8 cur_pairs = vf->num_queue_pairs;
2770 struct i40e_pf *pf = vf->pf;
2771
2772 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2773 return -EINVAL;
2774
2775 if (req_pairs > I40E_MAX_VF_QUEUES) {
2776 dev_err(&pf->pdev->dev,
2777 "VF %d tried to request more than %d queues.\n",
2778 vf->vf_id,
2779 I40E_MAX_VF_QUEUES);
2780 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2781 } else if (req_pairs - cur_pairs > pf->queues_left) {
2782 dev_warn(&pf->pdev->dev,
2783 "VF %d requested %d more queues, but only %d left.\n",
2784 vf->vf_id,
2785 req_pairs - cur_pairs,
2786 pf->queues_left);
2787 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2788 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2789 dev_warn(&pf->pdev->dev,
2790 "VF %d requested %d more queues, but there is not enough for it.\n",
2791 vf->vf_id,
2792 req_pairs - cur_pairs);
2793 vfres->num_queue_pairs = cur_pairs;
2794 } else {
2795 /* successful request */
2796 vf->num_req_queues = req_pairs;
2797 i40e_vc_reset_vf(vf, true);
2798 return 0;
2799 }
2800
2801 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2802 (u8 *)vfres, sizeof(*vfres));
2803}
2804
2805/**
2806 * i40e_vc_get_stats_msg
2807 * @vf: pointer to the VF info
2808 * @msg: pointer to the msg buffer
2809 *
2810 * called from the VF to get vsi stats
2811 **/
2812static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2813{
2814 struct virtchnl_queue_select *vqs =
2815 (struct virtchnl_queue_select *)msg;
2816 struct i40e_pf *pf = vf->pf;
2817 struct i40e_eth_stats stats;
2818 int aq_ret = 0;
2819 struct i40e_vsi *vsi;
2820
2821 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2822
2823 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2824 aq_ret = -EINVAL;
2825 goto error_param;
2826 }
2827
2828 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2829 aq_ret = -EINVAL;
2830 goto error_param;
2831 }
2832
2833 vsi = pf->vsi[vf->lan_vsi_idx];
2834 if (!vsi) {
2835 aq_ret = -EINVAL;
2836 goto error_param;
2837 }
2838 i40e_update_eth_stats(vsi);
2839 stats = vsi->eth_stats;
2840
2841error_param:
2842 /* send the response back to the VF */
2843 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2844 (u8 *)&stats, sizeof(stats));
2845}
2846
2847/**
2848 * i40e_can_vf_change_mac
2849 * @vf: pointer to the VF info
2850 *
2851 * Return true if the VF is allowed to change its MAC filters, false otherwise
2852 */
2853static bool i40e_can_vf_change_mac(struct i40e_vf *vf)
2854{
2855 /* If the VF MAC address has been set administratively (via the
2856 * ndo_set_vf_mac command), then deny permission to the VF to
2857 * add/delete unicast MAC addresses, unless the VF is trusted
2858 */
2859 if (vf->pf_set_mac && !vf->trusted)
2860 return false;
2861
2862 return true;
2863}
2864
2865#define I40E_MAX_MACVLAN_PER_HW 3072
2866#define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \
2867 (num_ports))
2868/* If the VF is not trusted restrict the number of MAC/VLAN it can program
2869 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2870 */
2871#define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2872#define I40E_VC_MAX_VLAN_PER_VF 16
2873
2874#define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \
2875({ typeof(vf_num) vf_num_ = (vf_num); \
2876 typeof(num_ports) num_ports_ = (num_ports); \
2877 ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \
2878 I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \
2879 I40E_VC_MAX_MAC_ADDR_PER_VF; })
2880/**
2881 * i40e_check_vf_permission
2882 * @vf: pointer to the VF info
2883 * @al: MAC address list from virtchnl
2884 *
2885 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2886 * if any address in the list is not valid. Checks the following conditions:
2887 *
2888 * 1) broadcast and zero addresses are never valid
2889 * 2) unicast addresses are not allowed if the VMM has administratively set
2890 * the VF MAC address, unless the VF is marked as privileged.
2891 * 3) There is enough space to add all the addresses.
2892 *
2893 * Note that to guarantee consistency, it is expected this function be called
2894 * while holding the mac_filter_hash_lock, as otherwise the current number of
2895 * addresses might not be accurate.
2896 **/
2897static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2898 struct virtchnl_ether_addr_list *al)
2899{
2900 struct i40e_pf *pf = vf->pf;
2901 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2902 struct i40e_hw *hw = &pf->hw;
2903 int mac2add_cnt = 0;
2904 int i;
2905
2906 for (i = 0; i < al->num_elements; i++) {
2907 struct i40e_mac_filter *f;
2908 u8 *addr = al->list[i].addr;
2909
2910 if (is_broadcast_ether_addr(addr) ||
2911 is_zero_ether_addr(addr)) {
2912 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2913 addr);
2914 return -EINVAL;
2915 }
2916
2917 /* If the host VMM administrator has set the VF MAC address
2918 * administratively via the ndo_set_vf_mac command then deny
2919 * permission to the VF to add or delete unicast MAC addresses.
2920 * Unless the VF is privileged and then it can do whatever.
2921 * The VF may request to set the MAC address filter already
2922 * assigned to it so do not return an error in that case.
2923 */
2924 if (!i40e_can_vf_change_mac(vf) &&
2925 !is_multicast_ether_addr(addr) &&
2926 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2927 dev_err(&pf->pdev->dev,
2928 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2929 return -EPERM;
2930 }
2931
2932 /*count filters that really will be added*/
2933 f = i40e_find_mac(vsi, addr);
2934 if (!f)
2935 ++mac2add_cnt;
2936 }
2937
2938 /* If this VF is not privileged, then we can't add more than a limited
2939 * number of addresses. Check to make sure that the additions do not
2940 * push us over the limit.
2941 */
2942 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2943 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2944 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2945 dev_err(&pf->pdev->dev,
2946 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2947 return -EPERM;
2948 }
2949 /* If this VF is trusted, it can use more resources than untrusted.
2950 * However to ensure that every trusted VF has appropriate number of
2951 * resources, divide whole pool of resources per port and then across
2952 * all VFs.
2953 */
2954 } else {
2955 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2956 I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
2957 hw->num_ports)) {
2958 dev_err(&pf->pdev->dev,
2959 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
2960 return -EPERM;
2961 }
2962 }
2963 return 0;
2964}
2965
2966/**
2967 * i40e_vc_ether_addr_type - get type of virtchnl_ether_addr
2968 * @vc_ether_addr: used to extract the type
2969 **/
2970static u8
2971i40e_vc_ether_addr_type(struct virtchnl_ether_addr *vc_ether_addr)
2972{
2973 return vc_ether_addr->type & VIRTCHNL_ETHER_ADDR_TYPE_MASK;
2974}
2975
2976/**
2977 * i40e_is_vc_addr_legacy
2978 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2979 *
2980 * check if the MAC address is from an older VF
2981 **/
2982static bool
2983i40e_is_vc_addr_legacy(struct virtchnl_ether_addr *vc_ether_addr)
2984{
2985 return i40e_vc_ether_addr_type(vc_ether_addr) ==
2986 VIRTCHNL_ETHER_ADDR_LEGACY;
2987}
2988
2989/**
2990 * i40e_is_vc_addr_primary
2991 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2992 *
2993 * check if the MAC address is the VF's primary MAC
2994 * This function should only be called when the MAC address in
2995 * virtchnl_ether_addr is a valid unicast MAC
2996 **/
2997static bool
2998i40e_is_vc_addr_primary(struct virtchnl_ether_addr *vc_ether_addr)
2999{
3000 return i40e_vc_ether_addr_type(vc_ether_addr) ==
3001 VIRTCHNL_ETHER_ADDR_PRIMARY;
3002}
3003
3004/**
3005 * i40e_update_vf_mac_addr
3006 * @vf: VF to update
3007 * @vc_ether_addr: structure from VIRTCHNL with MAC to add
3008 *
3009 * update the VF's cached hardware MAC if allowed
3010 **/
3011static void
3012i40e_update_vf_mac_addr(struct i40e_vf *vf,
3013 struct virtchnl_ether_addr *vc_ether_addr)
3014{
3015 u8 *mac_addr = vc_ether_addr->addr;
3016
3017 if (!is_valid_ether_addr(mac_addr))
3018 return;
3019
3020 /* If request to add MAC filter is a primary request update its default
3021 * MAC address with the requested one. If it is a legacy request then
3022 * check if current default is empty if so update the default MAC
3023 */
3024 if (i40e_is_vc_addr_primary(vc_ether_addr)) {
3025 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3026 } else if (i40e_is_vc_addr_legacy(vc_ether_addr)) {
3027 if (is_zero_ether_addr(vf->default_lan_addr.addr))
3028 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3029 }
3030}
3031
3032/**
3033 * i40e_vc_add_mac_addr_msg
3034 * @vf: pointer to the VF info
3035 * @msg: pointer to the msg buffer
3036 *
3037 * add guest mac address filter
3038 **/
3039static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3040{
3041 struct virtchnl_ether_addr_list *al =
3042 (struct virtchnl_ether_addr_list *)msg;
3043 struct i40e_pf *pf = vf->pf;
3044 struct i40e_vsi *vsi = NULL;
3045 int ret = 0;
3046 int i;
3047
3048 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3049 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3050 ret = -EINVAL;
3051 goto error_param;
3052 }
3053
3054 vsi = pf->vsi[vf->lan_vsi_idx];
3055
3056 /* Lock once, because all function inside for loop accesses VSI's
3057 * MAC filter list which needs to be protected using same lock.
3058 */
3059 spin_lock_bh(&vsi->mac_filter_hash_lock);
3060
3061 ret = i40e_check_vf_permission(vf, al);
3062 if (ret) {
3063 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3064 goto error_param;
3065 }
3066
3067 /* add new addresses to the list */
3068 for (i = 0; i < al->num_elements; i++) {
3069 struct i40e_mac_filter *f;
3070
3071 f = i40e_find_mac(vsi, al->list[i].addr);
3072 if (!f) {
3073 f = i40e_add_mac_filter(vsi, al->list[i].addr);
3074
3075 if (!f) {
3076 dev_err(&pf->pdev->dev,
3077 "Unable to add MAC filter %pM for VF %d\n",
3078 al->list[i].addr, vf->vf_id);
3079 ret = -EINVAL;
3080 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3081 goto error_param;
3082 }
3083 }
3084 i40e_update_vf_mac_addr(vf, &al->list[i]);
3085 }
3086 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3087
3088 /* program the updated filter list */
3089 ret = i40e_sync_vsi_filters(vsi);
3090 if (ret)
3091 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3092 vf->vf_id, ret);
3093
3094error_param:
3095 /* send the response to the VF */
3096 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
3097 ret, NULL, 0);
3098}
3099
3100/**
3101 * i40e_vc_del_mac_addr_msg
3102 * @vf: pointer to the VF info
3103 * @msg: pointer to the msg buffer
3104 *
3105 * remove guest mac address filter
3106 **/
3107static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3108{
3109 struct virtchnl_ether_addr_list *al =
3110 (struct virtchnl_ether_addr_list *)msg;
3111 bool was_unimac_deleted = false;
3112 struct i40e_pf *pf = vf->pf;
3113 struct i40e_vsi *vsi = NULL;
3114 int ret = 0;
3115 int i;
3116
3117 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3118 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3119 ret = -EINVAL;
3120 goto error_param;
3121 }
3122
3123 for (i = 0; i < al->num_elements; i++) {
3124 if (is_broadcast_ether_addr(al->list[i].addr) ||
3125 is_zero_ether_addr(al->list[i].addr)) {
3126 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
3127 al->list[i].addr, vf->vf_id);
3128 ret = -EINVAL;
3129 goto error_param;
3130 }
3131 }
3132 vsi = pf->vsi[vf->lan_vsi_idx];
3133
3134 spin_lock_bh(&vsi->mac_filter_hash_lock);
3135 /* delete addresses from the list */
3136 for (i = 0; i < al->num_elements; i++) {
3137 const u8 *addr = al->list[i].addr;
3138
3139 /* Allow to delete VF primary MAC only if it was not set
3140 * administratively by PF or if VF is trusted.
3141 */
3142 if (ether_addr_equal(addr, vf->default_lan_addr.addr)) {
3143 if (i40e_can_vf_change_mac(vf))
3144 was_unimac_deleted = true;
3145 else
3146 continue;
3147 }
3148
3149 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
3150 ret = -EINVAL;
3151 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3152 goto error_param;
3153 }
3154 }
3155
3156 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3157
3158 if (was_unimac_deleted)
3159 eth_zero_addr(vf->default_lan_addr.addr);
3160
3161 /* program the updated filter list */
3162 ret = i40e_sync_vsi_filters(vsi);
3163 if (ret)
3164 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3165 vf->vf_id, ret);
3166
3167 if (vf->trusted && was_unimac_deleted) {
3168 struct i40e_mac_filter *f;
3169 struct hlist_node *h;
3170 u8 *macaddr = NULL;
3171 int bkt;
3172
3173 /* set last unicast mac address as default */
3174 spin_lock_bh(&vsi->mac_filter_hash_lock);
3175 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3176 if (is_valid_ether_addr(f->macaddr))
3177 macaddr = f->macaddr;
3178 }
3179 if (macaddr)
3180 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
3181 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3182 }
3183error_param:
3184 /* send the response to the VF */
3185 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3186}
3187
3188/**
3189 * i40e_vc_add_vlan_msg
3190 * @vf: pointer to the VF info
3191 * @msg: pointer to the msg buffer
3192 *
3193 * program guest vlan id
3194 **/
3195static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3196{
3197 struct virtchnl_vlan_filter_list *vfl =
3198 (struct virtchnl_vlan_filter_list *)msg;
3199 struct i40e_pf *pf = vf->pf;
3200 struct i40e_vsi *vsi = NULL;
3201 int aq_ret = 0;
3202 int i;
3203
3204 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3205 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3206 dev_err(&pf->pdev->dev,
3207 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3208 goto error_param;
3209 }
3210 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3211 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3212 aq_ret = -EINVAL;
3213 goto error_param;
3214 }
3215
3216 for (i = 0; i < vfl->num_elements; i++) {
3217 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3218 aq_ret = -EINVAL;
3219 dev_err(&pf->pdev->dev,
3220 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3221 goto error_param;
3222 }
3223 }
3224 vsi = pf->vsi[vf->lan_vsi_idx];
3225 if (vsi->info.pvid) {
3226 aq_ret = -EINVAL;
3227 goto error_param;
3228 }
3229
3230 i40e_vlan_stripping_enable(vsi);
3231 for (i = 0; i < vfl->num_elements; i++) {
3232 /* add new VLAN filter */
3233 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3234 if (!ret)
3235 vf->num_vlan++;
3236
3237 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3238 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3239 true,
3240 vfl->vlan_id[i],
3241 NULL);
3242 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3243 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3244 true,
3245 vfl->vlan_id[i],
3246 NULL);
3247
3248 if (ret)
3249 dev_err(&pf->pdev->dev,
3250 "Unable to add VLAN filter %d for VF %d, error %d\n",
3251 vfl->vlan_id[i], vf->vf_id, ret);
3252 }
3253
3254error_param:
3255 /* send the response to the VF */
3256 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3257}
3258
3259/**
3260 * i40e_vc_remove_vlan_msg
3261 * @vf: pointer to the VF info
3262 * @msg: pointer to the msg buffer
3263 *
3264 * remove programmed guest vlan id
3265 **/
3266static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3267{
3268 struct virtchnl_vlan_filter_list *vfl =
3269 (struct virtchnl_vlan_filter_list *)msg;
3270 struct i40e_pf *pf = vf->pf;
3271 struct i40e_vsi *vsi = NULL;
3272 int aq_ret = 0;
3273 int i;
3274
3275 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3276 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3277 aq_ret = -EINVAL;
3278 goto error_param;
3279 }
3280
3281 for (i = 0; i < vfl->num_elements; i++) {
3282 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3283 aq_ret = -EINVAL;
3284 goto error_param;
3285 }
3286 }
3287
3288 vsi = pf->vsi[vf->lan_vsi_idx];
3289 if (vsi->info.pvid) {
3290 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3291 aq_ret = -EINVAL;
3292 goto error_param;
3293 }
3294
3295 for (i = 0; i < vfl->num_elements; i++) {
3296 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3297 vf->num_vlan--;
3298
3299 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3300 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3301 false,
3302 vfl->vlan_id[i],
3303 NULL);
3304 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3305 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3306 false,
3307 vfl->vlan_id[i],
3308 NULL);
3309 }
3310
3311error_param:
3312 /* send the response to the VF */
3313 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3314}
3315
3316/**
3317 * i40e_vc_rdma_msg
3318 * @vf: pointer to the VF info
3319 * @msg: pointer to the msg buffer
3320 * @msglen: msg length
3321 *
3322 * called from the VF for the iwarp msgs
3323 **/
3324static int i40e_vc_rdma_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3325{
3326 struct i40e_pf *pf = vf->pf;
3327 struct i40e_vsi *main_vsi;
3328 int aq_ret = 0;
3329 int abs_vf_id;
3330
3331 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3332 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3333 aq_ret = -EINVAL;
3334 goto error_param;
3335 }
3336
3337 main_vsi = i40e_pf_get_main_vsi(pf);
3338 abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3339 i40e_notify_client_of_vf_msg(main_vsi, abs_vf_id, msg, msglen);
3340
3341error_param:
3342 /* send the response to the VF */
3343 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_RDMA,
3344 aq_ret);
3345}
3346
3347/**
3348 * i40e_vc_rdma_qvmap_msg
3349 * @vf: pointer to the VF info
3350 * @msg: pointer to the msg buffer
3351 * @config: config qvmap or release it
3352 *
3353 * called from the VF for the iwarp msgs
3354 **/
3355static int i40e_vc_rdma_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3356{
3357 struct virtchnl_rdma_qvlist_info *qvlist_info =
3358 (struct virtchnl_rdma_qvlist_info *)msg;
3359 int aq_ret = 0;
3360
3361 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3362 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3363 aq_ret = -EINVAL;
3364 goto error_param;
3365 }
3366
3367 if (config) {
3368 if (i40e_config_rdma_qvlist(vf, qvlist_info))
3369 aq_ret = -EINVAL;
3370 } else {
3371 i40e_release_rdma_qvlist(vf);
3372 }
3373
3374error_param:
3375 /* send the response to the VF */
3376 return i40e_vc_send_resp_to_vf(vf,
3377 config ? VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP :
3378 VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP,
3379 aq_ret);
3380}
3381
3382/**
3383 * i40e_vc_config_rss_key
3384 * @vf: pointer to the VF info
3385 * @msg: pointer to the msg buffer
3386 *
3387 * Configure the VF's RSS key
3388 **/
3389static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3390{
3391 struct virtchnl_rss_key *vrk =
3392 (struct virtchnl_rss_key *)msg;
3393 struct i40e_pf *pf = vf->pf;
3394 struct i40e_vsi *vsi = NULL;
3395 int aq_ret = 0;
3396
3397 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3398 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3399 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3400 aq_ret = -EINVAL;
3401 goto err;
3402 }
3403
3404 vsi = pf->vsi[vf->lan_vsi_idx];
3405 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3406err:
3407 /* send the response to the VF */
3408 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3409 aq_ret);
3410}
3411
3412/**
3413 * i40e_vc_config_rss_lut
3414 * @vf: pointer to the VF info
3415 * @msg: pointer to the msg buffer
3416 *
3417 * Configure the VF's RSS LUT
3418 **/
3419static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3420{
3421 struct virtchnl_rss_lut *vrl =
3422 (struct virtchnl_rss_lut *)msg;
3423 struct i40e_pf *pf = vf->pf;
3424 struct i40e_vsi *vsi = NULL;
3425 int aq_ret = 0;
3426 u16 i;
3427
3428 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3429 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3430 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3431 aq_ret = -EINVAL;
3432 goto err;
3433 }
3434
3435 for (i = 0; i < vrl->lut_entries; i++)
3436 if (vrl->lut[i] >= vf->num_queue_pairs) {
3437 aq_ret = -EINVAL;
3438 goto err;
3439 }
3440
3441 vsi = pf->vsi[vf->lan_vsi_idx];
3442 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3443 /* send the response to the VF */
3444err:
3445 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3446 aq_ret);
3447}
3448
3449/**
3450 * i40e_vc_get_rss_hena
3451 * @vf: pointer to the VF info
3452 * @msg: pointer to the msg buffer
3453 *
3454 * Return the RSS HENA bits allowed by the hardware
3455 **/
3456static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3457{
3458 struct virtchnl_rss_hena *vrh = NULL;
3459 struct i40e_pf *pf = vf->pf;
3460 int aq_ret = 0;
3461 int len = 0;
3462
3463 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3464 aq_ret = -EINVAL;
3465 goto err;
3466 }
3467 len = sizeof(struct virtchnl_rss_hena);
3468
3469 vrh = kzalloc(len, GFP_KERNEL);
3470 if (!vrh) {
3471 aq_ret = -ENOMEM;
3472 len = 0;
3473 goto err;
3474 }
3475 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3476err:
3477 /* send the response back to the VF */
3478 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3479 aq_ret, (u8 *)vrh, len);
3480 kfree(vrh);
3481 return aq_ret;
3482}
3483
3484/**
3485 * i40e_vc_set_rss_hena
3486 * @vf: pointer to the VF info
3487 * @msg: pointer to the msg buffer
3488 *
3489 * Set the RSS HENA bits for the VF
3490 **/
3491static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3492{
3493 struct virtchnl_rss_hena *vrh =
3494 (struct virtchnl_rss_hena *)msg;
3495 struct i40e_pf *pf = vf->pf;
3496 struct i40e_hw *hw = &pf->hw;
3497 int aq_ret = 0;
3498
3499 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3500 aq_ret = -EINVAL;
3501 goto err;
3502 }
3503 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3504 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3505 (u32)(vrh->hena >> 32));
3506
3507 /* send the response to the VF */
3508err:
3509 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3510}
3511
3512/**
3513 * i40e_vc_enable_vlan_stripping
3514 * @vf: pointer to the VF info
3515 * @msg: pointer to the msg buffer
3516 *
3517 * Enable vlan header stripping for the VF
3518 **/
3519static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3520{
3521 struct i40e_vsi *vsi;
3522 int aq_ret = 0;
3523
3524 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3525 aq_ret = -EINVAL;
3526 goto err;
3527 }
3528
3529 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3530 i40e_vlan_stripping_enable(vsi);
3531
3532 /* send the response to the VF */
3533err:
3534 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3535 aq_ret);
3536}
3537
3538/**
3539 * i40e_vc_disable_vlan_stripping
3540 * @vf: pointer to the VF info
3541 * @msg: pointer to the msg buffer
3542 *
3543 * Disable vlan header stripping for the VF
3544 **/
3545static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3546{
3547 struct i40e_vsi *vsi;
3548 int aq_ret = 0;
3549
3550 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3551 aq_ret = -EINVAL;
3552 goto err;
3553 }
3554
3555 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3556 i40e_vlan_stripping_disable(vsi);
3557
3558 /* send the response to the VF */
3559err:
3560 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3561 aq_ret);
3562}
3563
3564/**
3565 * i40e_validate_cloud_filter
3566 * @vf: pointer to VF structure
3567 * @tc_filter: pointer to filter requested
3568 *
3569 * This function validates cloud filter programmed as TC filter for ADq
3570 **/
3571static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3572 struct virtchnl_filter *tc_filter)
3573{
3574 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3575 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3576 struct i40e_pf *pf = vf->pf;
3577 struct i40e_vsi *vsi = NULL;
3578 struct i40e_mac_filter *f;
3579 struct hlist_node *h;
3580 bool found = false;
3581 int bkt;
3582
3583 if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) {
3584 dev_info(&pf->pdev->dev,
3585 "VF %d: ADQ doesn't support this action (%d)\n",
3586 vf->vf_id, tc_filter->action);
3587 goto err;
3588 }
3589
3590 /* action_meta is TC number here to which the filter is applied */
3591 if (!tc_filter->action_meta ||
3592 tc_filter->action_meta > vf->num_tc) {
3593 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3594 vf->vf_id, tc_filter->action_meta);
3595 goto err;
3596 }
3597
3598 /* Check filter if it's programmed for advanced mode or basic mode.
3599 * There are two ADq modes (for VF only),
3600 * 1. Basic mode: intended to allow as many filter options as possible
3601 * to be added to a VF in Non-trusted mode. Main goal is
3602 * to add filters to its own MAC and VLAN id.
3603 * 2. Advanced mode: is for allowing filters to be applied other than
3604 * its own MAC or VLAN. This mode requires the VF to be
3605 * Trusted.
3606 */
3607 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3608 vsi = pf->vsi[vf->lan_vsi_idx];
3609 f = i40e_find_mac(vsi, data.dst_mac);
3610
3611 if (!f) {
3612 dev_info(&pf->pdev->dev,
3613 "Destination MAC %pM doesn't belong to VF %d\n",
3614 data.dst_mac, vf->vf_id);
3615 goto err;
3616 }
3617
3618 if (mask.vlan_id) {
3619 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3620 hlist) {
3621 if (f->vlan == ntohs(data.vlan_id)) {
3622 found = true;
3623 break;
3624 }
3625 }
3626 if (!found) {
3627 dev_info(&pf->pdev->dev,
3628 "VF %d doesn't have any VLAN id %u\n",
3629 vf->vf_id, ntohs(data.vlan_id));
3630 goto err;
3631 }
3632 }
3633 } else {
3634 /* Check if VF is trusted */
3635 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3636 dev_err(&pf->pdev->dev,
3637 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3638 vf->vf_id);
3639 return -EIO;
3640 }
3641 }
3642
3643 if (mask.dst_mac[0] & data.dst_mac[0]) {
3644 if (is_broadcast_ether_addr(data.dst_mac) ||
3645 is_zero_ether_addr(data.dst_mac)) {
3646 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3647 vf->vf_id, data.dst_mac);
3648 goto err;
3649 }
3650 }
3651
3652 if (mask.src_mac[0] & data.src_mac[0]) {
3653 if (is_broadcast_ether_addr(data.src_mac) ||
3654 is_zero_ether_addr(data.src_mac)) {
3655 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3656 vf->vf_id, data.src_mac);
3657 goto err;
3658 }
3659 }
3660
3661 if (mask.dst_port & data.dst_port) {
3662 if (!data.dst_port) {
3663 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3664 vf->vf_id);
3665 goto err;
3666 }
3667 }
3668
3669 if (mask.src_port & data.src_port) {
3670 if (!data.src_port) {
3671 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3672 vf->vf_id);
3673 goto err;
3674 }
3675 }
3676
3677 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3678 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3679 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3680 vf->vf_id);
3681 goto err;
3682 }
3683
3684 if (mask.vlan_id & data.vlan_id) {
3685 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3686 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3687 vf->vf_id);
3688 goto err;
3689 }
3690 }
3691
3692 return 0;
3693err:
3694 return -EIO;
3695}
3696
3697/**
3698 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3699 * @vf: pointer to the VF info
3700 * @seid: seid of the vsi it is searching for
3701 **/
3702static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3703{
3704 struct i40e_pf *pf = vf->pf;
3705 struct i40e_vsi *vsi = NULL;
3706 int i;
3707
3708 for (i = 0; i < vf->num_tc ; i++) {
3709 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3710 if (vsi && vsi->seid == seid)
3711 return vsi;
3712 }
3713 return NULL;
3714}
3715
3716/**
3717 * i40e_del_all_cloud_filters
3718 * @vf: pointer to the VF info
3719 *
3720 * This function deletes all cloud filters
3721 **/
3722static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3723{
3724 struct i40e_cloud_filter *cfilter = NULL;
3725 struct i40e_pf *pf = vf->pf;
3726 struct i40e_vsi *vsi = NULL;
3727 struct hlist_node *node;
3728 int ret;
3729
3730 hlist_for_each_entry_safe(cfilter, node,
3731 &vf->cloud_filter_list, cloud_node) {
3732 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3733
3734 if (!vsi) {
3735 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3736 vf->vf_id, cfilter->seid);
3737 continue;
3738 }
3739
3740 if (cfilter->dst_port)
3741 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3742 false);
3743 else
3744 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3745 if (ret)
3746 dev_err(&pf->pdev->dev,
3747 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3748 vf->vf_id, ERR_PTR(ret),
3749 i40e_aq_str(&pf->hw,
3750 pf->hw.aq.asq_last_status));
3751
3752 hlist_del(&cfilter->cloud_node);
3753 kfree(cfilter);
3754 vf->num_cloud_filters--;
3755 }
3756}
3757
3758/**
3759 * i40e_vc_del_cloud_filter
3760 * @vf: pointer to the VF info
3761 * @msg: pointer to the msg buffer
3762 *
3763 * This function deletes a cloud filter programmed as TC filter for ADq
3764 **/
3765static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3766{
3767 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3768 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3769 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3770 struct i40e_cloud_filter cfilter, *cf = NULL;
3771 struct i40e_pf *pf = vf->pf;
3772 struct i40e_vsi *vsi = NULL;
3773 struct hlist_node *node;
3774 int aq_ret = 0;
3775 int i, ret;
3776
3777 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3778 aq_ret = -EINVAL;
3779 goto err;
3780 }
3781
3782 if (!vf->adq_enabled) {
3783 dev_info(&pf->pdev->dev,
3784 "VF %d: ADq not enabled, can't apply cloud filter\n",
3785 vf->vf_id);
3786 aq_ret = -EINVAL;
3787 goto err;
3788 }
3789
3790 if (i40e_validate_cloud_filter(vf, vcf)) {
3791 dev_info(&pf->pdev->dev,
3792 "VF %d: Invalid input, can't apply cloud filter\n",
3793 vf->vf_id);
3794 aq_ret = -EINVAL;
3795 goto err;
3796 }
3797
3798 memset(&cfilter, 0, sizeof(cfilter));
3799 /* parse destination mac address */
3800 for (i = 0; i < ETH_ALEN; i++)
3801 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3802
3803 /* parse source mac address */
3804 for (i = 0; i < ETH_ALEN; i++)
3805 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3806
3807 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3808 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3809 cfilter.src_port = mask.src_port & tcf.src_port;
3810
3811 switch (vcf->flow_type) {
3812 case VIRTCHNL_TCP_V4_FLOW:
3813 cfilter.n_proto = ETH_P_IP;
3814 if (mask.dst_ip[0] & tcf.dst_ip[0])
3815 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3816 ARRAY_SIZE(tcf.dst_ip));
3817 else if (mask.src_ip[0] & tcf.dst_ip[0])
3818 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3819 ARRAY_SIZE(tcf.dst_ip));
3820 break;
3821 case VIRTCHNL_TCP_V6_FLOW:
3822 cfilter.n_proto = ETH_P_IPV6;
3823 if (mask.dst_ip[3] & tcf.dst_ip[3])
3824 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3825 sizeof(cfilter.ip.v6.dst_ip6));
3826 if (mask.src_ip[3] & tcf.src_ip[3])
3827 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3828 sizeof(cfilter.ip.v6.src_ip6));
3829 break;
3830 default:
3831 /* TC filter can be configured based on different combinations
3832 * and in this case IP is not a part of filter config
3833 */
3834 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3835 vf->vf_id);
3836 }
3837
3838 /* get the vsi to which the tc belongs to */
3839 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3840 cfilter.seid = vsi->seid;
3841 cfilter.flags = vcf->field_flags;
3842
3843 /* Deleting TC filter */
3844 if (tcf.dst_port)
3845 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3846 else
3847 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3848 if (ret) {
3849 dev_err(&pf->pdev->dev,
3850 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3851 vf->vf_id, ERR_PTR(ret),
3852 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3853 goto err;
3854 }
3855
3856 hlist_for_each_entry_safe(cf, node,
3857 &vf->cloud_filter_list, cloud_node) {
3858 if (cf->seid != cfilter.seid)
3859 continue;
3860 if (mask.dst_port)
3861 if (cfilter.dst_port != cf->dst_port)
3862 continue;
3863 if (mask.dst_mac[0])
3864 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3865 continue;
3866 /* for ipv4 data to be valid, only first byte of mask is set */
3867 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3868 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3869 ARRAY_SIZE(tcf.dst_ip)))
3870 continue;
3871 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3872 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3873 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3874 sizeof(cfilter.ip.v6.src_ip6)))
3875 continue;
3876 if (mask.vlan_id)
3877 if (cfilter.vlan_id != cf->vlan_id)
3878 continue;
3879
3880 hlist_del(&cf->cloud_node);
3881 kfree(cf);
3882 vf->num_cloud_filters--;
3883 }
3884
3885err:
3886 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3887 aq_ret);
3888}
3889
3890/**
3891 * i40e_vc_add_cloud_filter
3892 * @vf: pointer to the VF info
3893 * @msg: pointer to the msg buffer
3894 *
3895 * This function adds a cloud filter programmed as TC filter for ADq
3896 **/
3897static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3898{
3899 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3900 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3901 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3902 struct i40e_cloud_filter *cfilter = NULL;
3903 struct i40e_pf *pf = vf->pf;
3904 struct i40e_vsi *vsi = NULL;
3905 int aq_ret = 0;
3906 int i;
3907
3908 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3909 aq_ret = -EINVAL;
3910 goto err_out;
3911 }
3912
3913 if (!vf->adq_enabled) {
3914 dev_info(&pf->pdev->dev,
3915 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3916 vf->vf_id);
3917 aq_ret = -EINVAL;
3918 goto err_out;
3919 }
3920
3921 if (i40e_validate_cloud_filter(vf, vcf)) {
3922 dev_info(&pf->pdev->dev,
3923 "VF %d: Invalid input/s, can't apply cloud filter\n",
3924 vf->vf_id);
3925 aq_ret = -EINVAL;
3926 goto err_out;
3927 }
3928
3929 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3930 if (!cfilter) {
3931 aq_ret = -ENOMEM;
3932 goto err_out;
3933 }
3934
3935 /* parse destination mac address */
3936 for (i = 0; i < ETH_ALEN; i++)
3937 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3938
3939 /* parse source mac address */
3940 for (i = 0; i < ETH_ALEN; i++)
3941 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3942
3943 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3944 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3945 cfilter->src_port = mask.src_port & tcf.src_port;
3946
3947 switch (vcf->flow_type) {
3948 case VIRTCHNL_TCP_V4_FLOW:
3949 cfilter->n_proto = ETH_P_IP;
3950 if (mask.dst_ip[0] & tcf.dst_ip[0])
3951 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3952 ARRAY_SIZE(tcf.dst_ip));
3953 else if (mask.src_ip[0] & tcf.dst_ip[0])
3954 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3955 ARRAY_SIZE(tcf.dst_ip));
3956 break;
3957 case VIRTCHNL_TCP_V6_FLOW:
3958 cfilter->n_proto = ETH_P_IPV6;
3959 if (mask.dst_ip[3] & tcf.dst_ip[3])
3960 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3961 sizeof(cfilter->ip.v6.dst_ip6));
3962 if (mask.src_ip[3] & tcf.src_ip[3])
3963 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3964 sizeof(cfilter->ip.v6.src_ip6));
3965 break;
3966 default:
3967 /* TC filter can be configured based on different combinations
3968 * and in this case IP is not a part of filter config
3969 */
3970 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3971 vf->vf_id);
3972 }
3973
3974 /* get the VSI to which the TC belongs to */
3975 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3976 cfilter->seid = vsi->seid;
3977 cfilter->flags = vcf->field_flags;
3978
3979 /* Adding cloud filter programmed as TC filter */
3980 if (tcf.dst_port)
3981 aq_ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3982 else
3983 aq_ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3984 if (aq_ret) {
3985 dev_err(&pf->pdev->dev,
3986 "VF %d: Failed to add cloud filter, err %pe aq_err %s\n",
3987 vf->vf_id, ERR_PTR(aq_ret),
3988 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3989 goto err_free;
3990 }
3991
3992 INIT_HLIST_NODE(&cfilter->cloud_node);
3993 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3994 /* release the pointer passing it to the collection */
3995 cfilter = NULL;
3996 vf->num_cloud_filters++;
3997err_free:
3998 kfree(cfilter);
3999err_out:
4000 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
4001 aq_ret);
4002}
4003
4004/**
4005 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
4006 * @vf: pointer to the VF info
4007 * @msg: pointer to the msg buffer
4008 **/
4009static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
4010{
4011 struct virtchnl_tc_info *tci =
4012 (struct virtchnl_tc_info *)msg;
4013 struct i40e_pf *pf = vf->pf;
4014 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4015 int i, adq_request_qps = 0;
4016 int aq_ret = 0;
4017 u64 speed = 0;
4018
4019 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4020 aq_ret = -EINVAL;
4021 goto err;
4022 }
4023
4024 /* ADq cannot be applied if spoof check is ON */
4025 if (vf->spoofchk) {
4026 dev_err(&pf->pdev->dev,
4027 "Spoof check is ON, turn it OFF to enable ADq\n");
4028 aq_ret = -EINVAL;
4029 goto err;
4030 }
4031
4032 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
4033 dev_err(&pf->pdev->dev,
4034 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
4035 vf->vf_id);
4036 aq_ret = -EINVAL;
4037 goto err;
4038 }
4039
4040 /* max number of traffic classes for VF currently capped at 4 */
4041 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
4042 dev_err(&pf->pdev->dev,
4043 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
4044 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
4045 aq_ret = -EINVAL;
4046 goto err;
4047 }
4048
4049 /* validate queues for each TC */
4050 for (i = 0; i < tci->num_tc; i++)
4051 if (!tci->list[i].count ||
4052 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
4053 dev_err(&pf->pdev->dev,
4054 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
4055 vf->vf_id, i, tci->list[i].count,
4056 I40E_DEFAULT_QUEUES_PER_VF);
4057 aq_ret = -EINVAL;
4058 goto err;
4059 }
4060
4061 /* need Max VF queues but already have default number of queues */
4062 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
4063
4064 if (pf->queues_left < adq_request_qps) {
4065 dev_err(&pf->pdev->dev,
4066 "No queues left to allocate to VF %d\n",
4067 vf->vf_id);
4068 aq_ret = -EINVAL;
4069 goto err;
4070 } else {
4071 /* we need to allocate max VF queues to enable ADq so as to
4072 * make sure ADq enabled VF always gets back queues when it
4073 * goes through a reset.
4074 */
4075 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
4076 }
4077
4078 /* get link speed in MB to validate rate limit */
4079 speed = i40e_vc_link_speed2mbps(ls->link_speed);
4080 if (speed == SPEED_UNKNOWN) {
4081 dev_err(&pf->pdev->dev,
4082 "Cannot detect link speed\n");
4083 aq_ret = -EINVAL;
4084 goto err;
4085 }
4086
4087 /* parse data from the queue channel info */
4088 vf->num_tc = tci->num_tc;
4089 for (i = 0; i < vf->num_tc; i++) {
4090 if (tci->list[i].max_tx_rate) {
4091 if (tci->list[i].max_tx_rate > speed) {
4092 dev_err(&pf->pdev->dev,
4093 "Invalid max tx rate %llu specified for VF %d.",
4094 tci->list[i].max_tx_rate,
4095 vf->vf_id);
4096 aq_ret = -EINVAL;
4097 goto err;
4098 } else {
4099 vf->ch[i].max_tx_rate =
4100 tci->list[i].max_tx_rate;
4101 }
4102 }
4103 vf->ch[i].num_qps = tci->list[i].count;
4104 }
4105
4106 /* set this flag only after making sure all inputs are sane */
4107 vf->adq_enabled = true;
4108
4109 /* reset the VF in order to allocate resources */
4110 i40e_vc_reset_vf(vf, true);
4111
4112 return 0;
4113
4114 /* send the response to the VF */
4115err:
4116 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
4117 aq_ret);
4118}
4119
4120/**
4121 * i40e_vc_del_qch_msg
4122 * @vf: pointer to the VF info
4123 * @msg: pointer to the msg buffer
4124 **/
4125static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
4126{
4127 struct i40e_pf *pf = vf->pf;
4128 int aq_ret = 0;
4129
4130 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4131 aq_ret = -EINVAL;
4132 goto err;
4133 }
4134
4135 if (vf->adq_enabled) {
4136 i40e_del_all_cloud_filters(vf);
4137 i40e_del_qch(vf);
4138 vf->adq_enabled = false;
4139 vf->num_tc = 0;
4140 dev_info(&pf->pdev->dev,
4141 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
4142 vf->vf_id);
4143 } else {
4144 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
4145 vf->vf_id);
4146 aq_ret = -EINVAL;
4147 }
4148
4149 /* reset the VF in order to allocate resources */
4150 i40e_vc_reset_vf(vf, true);
4151
4152 return 0;
4153
4154err:
4155 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
4156 aq_ret);
4157}
4158
4159/**
4160 * i40e_vc_process_vf_msg
4161 * @pf: pointer to the PF structure
4162 * @vf_id: source VF id
4163 * @v_opcode: operation code
4164 * @v_retval: unused return value code
4165 * @msg: pointer to the msg buffer
4166 * @msglen: msg length
4167 *
4168 * called from the common aeq/arq handler to
4169 * process request from VF
4170 **/
4171int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4172 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4173{
4174 struct i40e_hw *hw = &pf->hw;
4175 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4176 struct i40e_vf *vf;
4177 int ret;
4178
4179 pf->vf_aq_requests++;
4180 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4181 return -EINVAL;
4182 vf = &(pf->vf[local_vf_id]);
4183
4184 /* Check if VF is disabled. */
4185 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4186 return -EINVAL;
4187
4188 /* perform basic checks on the msg */
4189 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4190
4191 if (ret) {
4192 i40e_vc_send_resp_to_vf(vf, v_opcode, -EINVAL);
4193 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4194 local_vf_id, v_opcode, msglen);
4195 return ret;
4196 }
4197
4198 switch (v_opcode) {
4199 case VIRTCHNL_OP_VERSION:
4200 ret = i40e_vc_get_version_msg(vf, msg);
4201 break;
4202 case VIRTCHNL_OP_GET_VF_RESOURCES:
4203 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4204 i40e_vc_notify_vf_link_state(vf);
4205 break;
4206 case VIRTCHNL_OP_RESET_VF:
4207 i40e_vc_reset_vf(vf, false);
4208 ret = 0;
4209 break;
4210 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4211 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4212 break;
4213 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4214 ret = i40e_vc_config_queues_msg(vf, msg);
4215 break;
4216 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4217 ret = i40e_vc_config_irq_map_msg(vf, msg);
4218 break;
4219 case VIRTCHNL_OP_ENABLE_QUEUES:
4220 ret = i40e_vc_enable_queues_msg(vf, msg);
4221 i40e_vc_notify_vf_link_state(vf);
4222 break;
4223 case VIRTCHNL_OP_DISABLE_QUEUES:
4224 ret = i40e_vc_disable_queues_msg(vf, msg);
4225 break;
4226 case VIRTCHNL_OP_ADD_ETH_ADDR:
4227 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4228 break;
4229 case VIRTCHNL_OP_DEL_ETH_ADDR:
4230 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4231 break;
4232 case VIRTCHNL_OP_ADD_VLAN:
4233 ret = i40e_vc_add_vlan_msg(vf, msg);
4234 break;
4235 case VIRTCHNL_OP_DEL_VLAN:
4236 ret = i40e_vc_remove_vlan_msg(vf, msg);
4237 break;
4238 case VIRTCHNL_OP_GET_STATS:
4239 ret = i40e_vc_get_stats_msg(vf, msg);
4240 break;
4241 case VIRTCHNL_OP_RDMA:
4242 ret = i40e_vc_rdma_msg(vf, msg, msglen);
4243 break;
4244 case VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP:
4245 ret = i40e_vc_rdma_qvmap_msg(vf, msg, true);
4246 break;
4247 case VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP:
4248 ret = i40e_vc_rdma_qvmap_msg(vf, msg, false);
4249 break;
4250 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4251 ret = i40e_vc_config_rss_key(vf, msg);
4252 break;
4253 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4254 ret = i40e_vc_config_rss_lut(vf, msg);
4255 break;
4256 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4257 ret = i40e_vc_get_rss_hena(vf, msg);
4258 break;
4259 case VIRTCHNL_OP_SET_RSS_HENA:
4260 ret = i40e_vc_set_rss_hena(vf, msg);
4261 break;
4262 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4263 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4264 break;
4265 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4266 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4267 break;
4268 case VIRTCHNL_OP_REQUEST_QUEUES:
4269 ret = i40e_vc_request_queues_msg(vf, msg);
4270 break;
4271 case VIRTCHNL_OP_ENABLE_CHANNELS:
4272 ret = i40e_vc_add_qch_msg(vf, msg);
4273 break;
4274 case VIRTCHNL_OP_DISABLE_CHANNELS:
4275 ret = i40e_vc_del_qch_msg(vf, msg);
4276 break;
4277 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4278 ret = i40e_vc_add_cloud_filter(vf, msg);
4279 break;
4280 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4281 ret = i40e_vc_del_cloud_filter(vf, msg);
4282 break;
4283 case VIRTCHNL_OP_UNKNOWN:
4284 default:
4285 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4286 v_opcode, local_vf_id);
4287 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4288 -EOPNOTSUPP);
4289 break;
4290 }
4291
4292 return ret;
4293}
4294
4295/**
4296 * i40e_vc_process_vflr_event
4297 * @pf: pointer to the PF structure
4298 *
4299 * called from the vlfr irq handler to
4300 * free up VF resources and state variables
4301 **/
4302int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4303{
4304 struct i40e_hw *hw = &pf->hw;
4305 u32 reg, reg_idx, bit_idx;
4306 struct i40e_vf *vf;
4307 int vf_id;
4308
4309 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4310 return 0;
4311
4312 /* Re-enable the VFLR interrupt cause here, before looking for which
4313 * VF got reset. Otherwise, if another VF gets a reset while the
4314 * first one is being processed, that interrupt will be lost, and
4315 * that VF will be stuck in reset forever.
4316 */
4317 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4318 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4319 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4320 i40e_flush(hw);
4321
4322 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4323 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4324 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4325 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4326 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4327 vf = &pf->vf[vf_id];
4328 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4329 if (reg & BIT(bit_idx))
4330 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4331 i40e_reset_vf(vf, true);
4332 }
4333
4334 return 0;
4335}
4336
4337/**
4338 * i40e_validate_vf
4339 * @pf: the physical function
4340 * @vf_id: VF identifier
4341 *
4342 * Check that the VF is enabled and the VSI exists.
4343 *
4344 * Returns 0 on success, negative on failure
4345 **/
4346static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4347{
4348 struct i40e_vsi *vsi;
4349 struct i40e_vf *vf;
4350 int ret = 0;
4351
4352 if (vf_id >= pf->num_alloc_vfs) {
4353 dev_err(&pf->pdev->dev,
4354 "Invalid VF Identifier %d\n", vf_id);
4355 ret = -EINVAL;
4356 goto err_out;
4357 }
4358 vf = &pf->vf[vf_id];
4359 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4360 if (!vsi)
4361 ret = -EINVAL;
4362err_out:
4363 return ret;
4364}
4365
4366/**
4367 * i40e_check_vf_init_timeout
4368 * @vf: the virtual function
4369 *
4370 * Check that the VF's initialization was successfully done and if not
4371 * wait up to 300ms for its finish.
4372 *
4373 * Returns true when VF is initialized, false on timeout
4374 **/
4375static bool i40e_check_vf_init_timeout(struct i40e_vf *vf)
4376{
4377 int i;
4378
4379 /* When the VF is resetting wait until it is done.
4380 * It can take up to 200 milliseconds, but wait for
4381 * up to 300 milliseconds to be safe.
4382 */
4383 for (i = 0; i < 15; i++) {
4384 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4385 return true;
4386 msleep(20);
4387 }
4388
4389 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4390 dev_err(&vf->pf->pdev->dev,
4391 "VF %d still in reset. Try again.\n", vf->vf_id);
4392 return false;
4393 }
4394
4395 return true;
4396}
4397
4398/**
4399 * i40e_ndo_set_vf_mac
4400 * @netdev: network interface device structure
4401 * @vf_id: VF identifier
4402 * @mac: mac address
4403 *
4404 * program VF mac address
4405 **/
4406int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4407{
4408 struct i40e_netdev_priv *np = netdev_priv(netdev);
4409 struct i40e_vsi *vsi = np->vsi;
4410 struct i40e_pf *pf = vsi->back;
4411 struct i40e_mac_filter *f;
4412 struct i40e_vf *vf;
4413 int ret = 0;
4414 struct hlist_node *h;
4415 int bkt;
4416
4417 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4418 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4419 return -EAGAIN;
4420 }
4421
4422 /* validate the request */
4423 ret = i40e_validate_vf(pf, vf_id);
4424 if (ret)
4425 goto error_param;
4426
4427 vf = &pf->vf[vf_id];
4428 if (!i40e_check_vf_init_timeout(vf)) {
4429 ret = -EAGAIN;
4430 goto error_param;
4431 }
4432 vsi = pf->vsi[vf->lan_vsi_idx];
4433
4434 if (is_multicast_ether_addr(mac)) {
4435 dev_err(&pf->pdev->dev,
4436 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4437 ret = -EINVAL;
4438 goto error_param;
4439 }
4440
4441 /* Lock once because below invoked function add/del_filter requires
4442 * mac_filter_hash_lock to be held
4443 */
4444 spin_lock_bh(&vsi->mac_filter_hash_lock);
4445
4446 /* delete the temporary mac address */
4447 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4448 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4449
4450 /* Delete all the filters for this VSI - we're going to kill it
4451 * anyway.
4452 */
4453 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4454 __i40e_del_filter(vsi, f);
4455
4456 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4457
4458 /* program mac filter */
4459 if (i40e_sync_vsi_filters(vsi)) {
4460 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4461 ret = -EIO;
4462 goto error_param;
4463 }
4464 ether_addr_copy(vf->default_lan_addr.addr, mac);
4465
4466 if (is_zero_ether_addr(mac)) {
4467 vf->pf_set_mac = false;
4468 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4469 } else {
4470 vf->pf_set_mac = true;
4471 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4472 mac, vf_id);
4473 }
4474
4475 /* Force the VF interface down so it has to bring up with new MAC
4476 * address
4477 */
4478 i40e_vc_reset_vf(vf, true);
4479 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4480
4481error_param:
4482 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4483 return ret;
4484}
4485
4486/**
4487 * i40e_ndo_set_vf_port_vlan
4488 * @netdev: network interface device structure
4489 * @vf_id: VF identifier
4490 * @vlan_id: mac address
4491 * @qos: priority setting
4492 * @vlan_proto: vlan protocol
4493 *
4494 * program VF vlan id and/or qos
4495 **/
4496int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4497 u16 vlan_id, u8 qos, __be16 vlan_proto)
4498{
4499 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4500 struct i40e_netdev_priv *np = netdev_priv(netdev);
4501 bool allmulti = false, alluni = false;
4502 struct i40e_pf *pf = np->vsi->back;
4503 struct i40e_vsi *vsi;
4504 struct i40e_vf *vf;
4505 int ret = 0;
4506
4507 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4508 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4509 return -EAGAIN;
4510 }
4511
4512 /* validate the request */
4513 ret = i40e_validate_vf(pf, vf_id);
4514 if (ret)
4515 goto error_pvid;
4516
4517 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4518 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4519 ret = -EINVAL;
4520 goto error_pvid;
4521 }
4522
4523 if (vlan_proto != htons(ETH_P_8021Q)) {
4524 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4525 ret = -EPROTONOSUPPORT;
4526 goto error_pvid;
4527 }
4528
4529 vf = &pf->vf[vf_id];
4530 if (!i40e_check_vf_init_timeout(vf)) {
4531 ret = -EAGAIN;
4532 goto error_pvid;
4533 }
4534 vsi = pf->vsi[vf->lan_vsi_idx];
4535
4536 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4537 /* duplicate request, so just return success */
4538 goto error_pvid;
4539
4540 i40e_vlan_stripping_enable(vsi);
4541
4542 /* Locked once because multiple functions below iterate list */
4543 spin_lock_bh(&vsi->mac_filter_hash_lock);
4544
4545 /* Check for condition where there was already a port VLAN ID
4546 * filter set and now it is being deleted by setting it to zero.
4547 * Additionally check for the condition where there was a port
4548 * VLAN but now there is a new and different port VLAN being set.
4549 * Before deleting all the old VLAN filters we must add new ones
4550 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4551 * MAC addresses deleted.
4552 */
4553 if ((!(vlan_id || qos) ||
4554 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4555 vsi->info.pvid) {
4556 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4557 if (ret) {
4558 dev_info(&vsi->back->pdev->dev,
4559 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4560 vsi->back->hw.aq.asq_last_status);
4561 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4562 goto error_pvid;
4563 }
4564 }
4565
4566 if (vsi->info.pvid) {
4567 /* remove all filters on the old VLAN */
4568 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4569 VLAN_VID_MASK));
4570 }
4571
4572 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4573
4574 /* disable promisc modes in case they were enabled */
4575 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4576 allmulti, alluni);
4577 if (ret) {
4578 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4579 goto error_pvid;
4580 }
4581
4582 if (vlan_id || qos)
4583 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4584 else
4585 i40e_vsi_remove_pvid(vsi);
4586 spin_lock_bh(&vsi->mac_filter_hash_lock);
4587
4588 if (vlan_id) {
4589 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4590 vlan_id, qos, vf_id);
4591
4592 /* add new VLAN filter for each MAC */
4593 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4594 if (ret) {
4595 dev_info(&vsi->back->pdev->dev,
4596 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4597 vsi->back->hw.aq.asq_last_status);
4598 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4599 goto error_pvid;
4600 }
4601
4602 /* remove the previously added non-VLAN MAC filters */
4603 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4604 }
4605
4606 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4607
4608 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4609 alluni = true;
4610
4611 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4612 allmulti = true;
4613
4614 /* Schedule the worker thread to take care of applying changes */
4615 i40e_service_event_schedule(vsi->back);
4616
4617 if (ret) {
4618 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4619 goto error_pvid;
4620 }
4621
4622 /* The Port VLAN needs to be saved across resets the same as the
4623 * default LAN MAC address.
4624 */
4625 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4626
4627 i40e_vc_reset_vf(vf, true);
4628 /* During reset the VF got a new VSI, so refresh a pointer. */
4629 vsi = pf->vsi[vf->lan_vsi_idx];
4630
4631 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4632 if (ret) {
4633 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4634 goto error_pvid;
4635 }
4636
4637 ret = 0;
4638
4639error_pvid:
4640 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4641 return ret;
4642}
4643
4644/**
4645 * i40e_ndo_set_vf_bw
4646 * @netdev: network interface device structure
4647 * @vf_id: VF identifier
4648 * @min_tx_rate: Minimum Tx rate
4649 * @max_tx_rate: Maximum Tx rate
4650 *
4651 * configure VF Tx rate
4652 **/
4653int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4654 int max_tx_rate)
4655{
4656 struct i40e_netdev_priv *np = netdev_priv(netdev);
4657 struct i40e_pf *pf = np->vsi->back;
4658 struct i40e_vsi *vsi;
4659 struct i40e_vf *vf;
4660 int ret = 0;
4661
4662 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4663 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4664 return -EAGAIN;
4665 }
4666
4667 /* validate the request */
4668 ret = i40e_validate_vf(pf, vf_id);
4669 if (ret)
4670 goto error;
4671
4672 if (min_tx_rate) {
4673 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4674 min_tx_rate, vf_id);
4675 ret = -EINVAL;
4676 goto error;
4677 }
4678
4679 vf = &pf->vf[vf_id];
4680 if (!i40e_check_vf_init_timeout(vf)) {
4681 ret = -EAGAIN;
4682 goto error;
4683 }
4684 vsi = pf->vsi[vf->lan_vsi_idx];
4685
4686 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4687 if (ret)
4688 goto error;
4689
4690 vf->tx_rate = max_tx_rate;
4691error:
4692 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4693 return ret;
4694}
4695
4696/**
4697 * i40e_ndo_get_vf_config
4698 * @netdev: network interface device structure
4699 * @vf_id: VF identifier
4700 * @ivi: VF configuration structure
4701 *
4702 * return VF configuration
4703 **/
4704int i40e_ndo_get_vf_config(struct net_device *netdev,
4705 int vf_id, struct ifla_vf_info *ivi)
4706{
4707 struct i40e_netdev_priv *np = netdev_priv(netdev);
4708 struct i40e_vsi *vsi = np->vsi;
4709 struct i40e_pf *pf = vsi->back;
4710 struct i40e_vf *vf;
4711 int ret = 0;
4712
4713 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4714 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4715 return -EAGAIN;
4716 }
4717
4718 /* validate the request */
4719 ret = i40e_validate_vf(pf, vf_id);
4720 if (ret)
4721 goto error_param;
4722
4723 vf = &pf->vf[vf_id];
4724 /* first vsi is always the LAN vsi */
4725 vsi = pf->vsi[vf->lan_vsi_idx];
4726 if (!vsi) {
4727 ret = -ENOENT;
4728 goto error_param;
4729 }
4730
4731 ivi->vf = vf_id;
4732
4733 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4734
4735 ivi->max_tx_rate = vf->tx_rate;
4736 ivi->min_tx_rate = 0;
4737 ivi->vlan = le16_get_bits(vsi->info.pvid, I40E_VLAN_MASK);
4738 ivi->qos = le16_get_bits(vsi->info.pvid, I40E_PRIORITY_MASK);
4739 if (vf->link_forced == false)
4740 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4741 else if (vf->link_up == true)
4742 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4743 else
4744 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4745 ivi->spoofchk = vf->spoofchk;
4746 ivi->trusted = vf->trusted;
4747 ret = 0;
4748
4749error_param:
4750 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4751 return ret;
4752}
4753
4754/**
4755 * i40e_ndo_set_vf_link_state
4756 * @netdev: network interface device structure
4757 * @vf_id: VF identifier
4758 * @link: required link state
4759 *
4760 * Set the link state of a specified VF, regardless of physical link state
4761 **/
4762int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4763{
4764 struct i40e_netdev_priv *np = netdev_priv(netdev);
4765 struct i40e_pf *pf = np->vsi->back;
4766 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4767 struct virtchnl_pf_event pfe;
4768 struct i40e_hw *hw = &pf->hw;
4769 struct i40e_vsi *vsi;
4770 unsigned long q_map;
4771 struct i40e_vf *vf;
4772 int abs_vf_id;
4773 int ret = 0;
4774 int tmp;
4775
4776 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4777 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4778 return -EAGAIN;
4779 }
4780
4781 /* validate the request */
4782 if (vf_id >= pf->num_alloc_vfs) {
4783 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4784 ret = -EINVAL;
4785 goto error_out;
4786 }
4787
4788 vf = &pf->vf[vf_id];
4789 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4790
4791 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4792 pfe.severity = PF_EVENT_SEVERITY_INFO;
4793
4794 switch (link) {
4795 case IFLA_VF_LINK_STATE_AUTO:
4796 vf->link_forced = false;
4797 vf->is_disabled_from_host = false;
4798 /* reset needed to reinit VF resources */
4799 i40e_vc_reset_vf(vf, true);
4800 i40e_set_vf_link_state(vf, &pfe, ls);
4801 break;
4802 case IFLA_VF_LINK_STATE_ENABLE:
4803 vf->link_forced = true;
4804 vf->link_up = true;
4805 vf->is_disabled_from_host = false;
4806 /* reset needed to reinit VF resources */
4807 i40e_vc_reset_vf(vf, true);
4808 i40e_set_vf_link_state(vf, &pfe, ls);
4809 break;
4810 case IFLA_VF_LINK_STATE_DISABLE:
4811 vf->link_forced = true;
4812 vf->link_up = false;
4813 i40e_set_vf_link_state(vf, &pfe, ls);
4814
4815 vsi = pf->vsi[vf->lan_vsi_idx];
4816 q_map = BIT(vsi->num_queue_pairs) - 1;
4817
4818 vf->is_disabled_from_host = true;
4819
4820 /* Try to stop both Tx&Rx rings even if one of the calls fails
4821 * to ensure we stop the rings even in case of errors.
4822 * If any of them returns with an error then the first
4823 * error that occurred will be returned.
4824 */
4825 tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false);
4826 ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false);
4827
4828 ret = tmp ? tmp : ret;
4829 break;
4830 default:
4831 ret = -EINVAL;
4832 goto error_out;
4833 }
4834 /* Notify the VF of its new link state */
4835 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4836 0, (u8 *)&pfe, sizeof(pfe), NULL);
4837
4838error_out:
4839 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4840 return ret;
4841}
4842
4843/**
4844 * i40e_ndo_set_vf_spoofchk
4845 * @netdev: network interface device structure
4846 * @vf_id: VF identifier
4847 * @enable: flag to enable or disable feature
4848 *
4849 * Enable or disable VF spoof checking
4850 **/
4851int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4852{
4853 struct i40e_netdev_priv *np = netdev_priv(netdev);
4854 struct i40e_vsi *vsi = np->vsi;
4855 struct i40e_pf *pf = vsi->back;
4856 struct i40e_vsi_context ctxt;
4857 struct i40e_hw *hw = &pf->hw;
4858 struct i40e_vf *vf;
4859 int ret = 0;
4860
4861 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4862 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4863 return -EAGAIN;
4864 }
4865
4866 /* validate the request */
4867 if (vf_id >= pf->num_alloc_vfs) {
4868 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4869 ret = -EINVAL;
4870 goto out;
4871 }
4872
4873 vf = &(pf->vf[vf_id]);
4874 if (!i40e_check_vf_init_timeout(vf)) {
4875 ret = -EAGAIN;
4876 goto out;
4877 }
4878
4879 if (enable == vf->spoofchk)
4880 goto out;
4881
4882 vf->spoofchk = enable;
4883 memset(&ctxt, 0, sizeof(ctxt));
4884 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4885 ctxt.pf_num = pf->hw.pf_id;
4886 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4887 if (enable)
4888 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4889 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4890 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4891 if (ret) {
4892 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4893 ret);
4894 ret = -EIO;
4895 }
4896out:
4897 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4898 return ret;
4899}
4900
4901/**
4902 * i40e_ndo_set_vf_trust
4903 * @netdev: network interface device structure of the pf
4904 * @vf_id: VF identifier
4905 * @setting: trust setting
4906 *
4907 * Enable or disable VF trust setting
4908 **/
4909int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4910{
4911 struct i40e_netdev_priv *np = netdev_priv(netdev);
4912 struct i40e_pf *pf = np->vsi->back;
4913 struct i40e_vf *vf;
4914 int ret = 0;
4915
4916 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4917 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4918 return -EAGAIN;
4919 }
4920
4921 /* validate the request */
4922 if (vf_id >= pf->num_alloc_vfs) {
4923 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4924 ret = -EINVAL;
4925 goto out;
4926 }
4927
4928 if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
4929 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4930 ret = -EINVAL;
4931 goto out;
4932 }
4933
4934 vf = &pf->vf[vf_id];
4935
4936 if (setting == vf->trusted)
4937 goto out;
4938
4939 vf->trusted = setting;
4940
4941 /* request PF to sync mac/vlan filters for the VF */
4942 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
4943 pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
4944
4945 i40e_vc_reset_vf(vf, true);
4946 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4947 vf_id, setting ? "" : "un");
4948
4949 if (vf->adq_enabled) {
4950 if (!vf->trusted) {
4951 dev_info(&pf->pdev->dev,
4952 "VF %u no longer Trusted, deleting all cloud filters\n",
4953 vf_id);
4954 i40e_del_all_cloud_filters(vf);
4955 }
4956 }
4957
4958out:
4959 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4960 return ret;
4961}
4962
4963/**
4964 * i40e_get_vf_stats - populate some stats for the VF
4965 * @netdev: the netdev of the PF
4966 * @vf_id: the host OS identifier (0-127)
4967 * @vf_stats: pointer to the OS memory to be initialized
4968 */
4969int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4970 struct ifla_vf_stats *vf_stats)
4971{
4972 struct i40e_netdev_priv *np = netdev_priv(netdev);
4973 struct i40e_pf *pf = np->vsi->back;
4974 struct i40e_eth_stats *stats;
4975 struct i40e_vsi *vsi;
4976 struct i40e_vf *vf;
4977
4978 /* validate the request */
4979 if (i40e_validate_vf(pf, vf_id))
4980 return -EINVAL;
4981
4982 vf = &pf->vf[vf_id];
4983 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4984 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4985 return -EBUSY;
4986 }
4987
4988 vsi = pf->vsi[vf->lan_vsi_idx];
4989 if (!vsi)
4990 return -EINVAL;
4991
4992 i40e_update_eth_stats(vsi);
4993 stats = &vsi->eth_stats;
4994
4995 memset(vf_stats, 0, sizeof(*vf_stats));
4996
4997 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4998 stats->rx_multicast;
4999 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
5000 stats->tx_multicast;
5001 vf_stats->rx_bytes = stats->rx_bytes;
5002 vf_stats->tx_bytes = stats->tx_bytes;
5003 vf_stats->broadcast = stats->rx_broadcast;
5004 vf_stats->multicast = stats->rx_multicast;
5005 vf_stats->rx_dropped = stats->rx_discards + stats->rx_discards_other;
5006 vf_stats->tx_dropped = stats->tx_discards;
5007
5008 return 0;
5009}