Loading...
1/*******************************************************************************
2 *
3 * Intel Ethernet Controller XL710 Family Linux Driver
4 * Copyright(c) 2013 - 2016 Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
17 *
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
20 *
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 ******************************************************************************/
26
27#include "i40e.h"
28
29/*********************notification routines***********************/
30
31/**
32 * i40e_vc_vf_broadcast
33 * @pf: pointer to the PF structure
34 * @opcode: operation code
35 * @retval: return value
36 * @msg: pointer to the msg buffer
37 * @msglen: msg length
38 *
39 * send a message to all VFs on a given PF
40 **/
41static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
42 enum i40e_virtchnl_ops v_opcode,
43 i40e_status v_retval, u8 *msg,
44 u16 msglen)
45{
46 struct i40e_hw *hw = &pf->hw;
47 struct i40e_vf *vf = pf->vf;
48 int i;
49
50 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
51 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
52 /* Not all vfs are enabled so skip the ones that are not */
53 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states) &&
54 !test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
55 continue;
56
57 /* Ignore return value on purpose - a given VF may fail, but
58 * we need to keep going and send to all of them
59 */
60 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
61 msg, msglen, NULL);
62 }
63}
64
65/**
66 * i40e_vc_notify_link_state
67 * @vf: pointer to the VF structure
68 *
69 * send a link status message to a single VF
70 **/
71static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
72{
73 struct i40e_virtchnl_pf_event pfe;
74 struct i40e_pf *pf = vf->pf;
75 struct i40e_hw *hw = &pf->hw;
76 struct i40e_link_status *ls = &pf->hw.phy.link_info;
77 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
78
79 pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
80 pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
81 if (vf->link_forced) {
82 pfe.event_data.link_event.link_status = vf->link_up;
83 pfe.event_data.link_event.link_speed =
84 (vf->link_up ? I40E_LINK_SPEED_40GB : 0);
85 } else {
86 pfe.event_data.link_event.link_status =
87 ls->link_info & I40E_AQ_LINK_UP;
88 pfe.event_data.link_event.link_speed = ls->link_speed;
89 }
90 i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
91 0, (u8 *)&pfe, sizeof(pfe), NULL);
92}
93
94/**
95 * i40e_vc_notify_link_state
96 * @pf: pointer to the PF structure
97 *
98 * send a link status message to all VFs on a given PF
99 **/
100void i40e_vc_notify_link_state(struct i40e_pf *pf)
101{
102 int i;
103
104 for (i = 0; i < pf->num_alloc_vfs; i++)
105 i40e_vc_notify_vf_link_state(&pf->vf[i]);
106}
107
108/**
109 * i40e_vc_notify_reset
110 * @pf: pointer to the PF structure
111 *
112 * indicate a pending reset to all VFs on a given PF
113 **/
114void i40e_vc_notify_reset(struct i40e_pf *pf)
115{
116 struct i40e_virtchnl_pf_event pfe;
117
118 pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
119 pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
120 i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, 0,
121 (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event));
122}
123
124/**
125 * i40e_vc_notify_vf_reset
126 * @vf: pointer to the VF structure
127 *
128 * indicate a pending reset to the given VF
129 **/
130void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
131{
132 struct i40e_virtchnl_pf_event pfe;
133 int abs_vf_id;
134
135 /* validate the request */
136 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
137 return;
138
139 /* verify if the VF is in either init or active before proceeding */
140 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states) &&
141 !test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
142 return;
143
144 abs_vf_id = vf->vf_id + vf->pf->hw.func_caps.vf_base_id;
145
146 pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
147 pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
148 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
149 0, (u8 *)&pfe,
150 sizeof(struct i40e_virtchnl_pf_event), NULL);
151}
152/***********************misc routines*****************************/
153
154/**
155 * i40e_vc_disable_vf
156 * @pf: pointer to the PF info
157 * @vf: pointer to the VF info
158 *
159 * Disable the VF through a SW reset
160 **/
161static inline void i40e_vc_disable_vf(struct i40e_pf *pf, struct i40e_vf *vf)
162{
163 i40e_vc_notify_vf_reset(vf);
164 i40e_reset_vf(vf, false);
165}
166
167/**
168 * i40e_vc_isvalid_vsi_id
169 * @vf: pointer to the VF info
170 * @vsi_id: VF relative VSI id
171 *
172 * check for the valid VSI id
173 **/
174static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
175{
176 struct i40e_pf *pf = vf->pf;
177 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
178
179 return (vsi && (vsi->vf_id == vf->vf_id));
180}
181
182/**
183 * i40e_vc_isvalid_queue_id
184 * @vf: pointer to the VF info
185 * @vsi_id: vsi id
186 * @qid: vsi relative queue id
187 *
188 * check for the valid queue id
189 **/
190static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
191 u8 qid)
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 && (qid < vsi->alloc_queue_pairs));
197}
198
199/**
200 * i40e_vc_isvalid_vector_id
201 * @vf: pointer to the VF info
202 * @vector_id: VF relative vector id
203 *
204 * check for the valid vector id
205 **/
206static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
207{
208 struct i40e_pf *pf = vf->pf;
209
210 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
211}
212
213/***********************vf resource mgmt routines*****************/
214
215/**
216 * i40e_vc_get_pf_queue_id
217 * @vf: pointer to the VF info
218 * @vsi_id: id of VSI as provided by the FW
219 * @vsi_queue_id: vsi relative queue id
220 *
221 * return PF relative queue id
222 **/
223static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
224 u8 vsi_queue_id)
225{
226 struct i40e_pf *pf = vf->pf;
227 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
228 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
229
230 if (!vsi)
231 return pf_queue_id;
232
233 if (le16_to_cpu(vsi->info.mapping_flags) &
234 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
235 pf_queue_id =
236 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
237 else
238 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
239 vsi_queue_id;
240
241 return pf_queue_id;
242}
243
244/**
245 * i40e_config_irq_link_list
246 * @vf: pointer to the VF info
247 * @vsi_id: id of VSI as given by the FW
248 * @vecmap: irq map info
249 *
250 * configure irq link list from the map
251 **/
252static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
253 struct i40e_virtchnl_vector_map *vecmap)
254{
255 unsigned long linklistmap = 0, tempmap;
256 struct i40e_pf *pf = vf->pf;
257 struct i40e_hw *hw = &pf->hw;
258 u16 vsi_queue_id, pf_queue_id;
259 enum i40e_queue_type qtype;
260 u16 next_q, vector_id;
261 u32 reg, reg_idx;
262 u16 itr_idx = 0;
263
264 vector_id = vecmap->vector_id;
265 /* setup the head */
266 if (0 == vector_id)
267 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
268 else
269 reg_idx = I40E_VPINT_LNKLSTN(
270 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
271 (vector_id - 1));
272
273 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
274 /* Special case - No queues mapped on this vector */
275 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
276 goto irq_list_done;
277 }
278 tempmap = vecmap->rxq_map;
279 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
280 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
281 vsi_queue_id));
282 }
283
284 tempmap = vecmap->txq_map;
285 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
286 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
287 vsi_queue_id + 1));
288 }
289
290 next_q = find_first_bit(&linklistmap,
291 (I40E_MAX_VSI_QP *
292 I40E_VIRTCHNL_SUPPORTED_QTYPES));
293 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
294 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
295 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
296 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
297
298 wr32(hw, reg_idx, reg);
299
300 while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
301 switch (qtype) {
302 case I40E_QUEUE_TYPE_RX:
303 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
304 itr_idx = vecmap->rxitr_idx;
305 break;
306 case I40E_QUEUE_TYPE_TX:
307 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
308 itr_idx = vecmap->txitr_idx;
309 break;
310 default:
311 break;
312 }
313
314 next_q = find_next_bit(&linklistmap,
315 (I40E_MAX_VSI_QP *
316 I40E_VIRTCHNL_SUPPORTED_QTYPES),
317 next_q + 1);
318 if (next_q <
319 (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
320 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
321 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
322 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id,
323 vsi_queue_id);
324 } else {
325 pf_queue_id = I40E_QUEUE_END_OF_LIST;
326 qtype = 0;
327 }
328
329 /* format for the RQCTL & TQCTL regs is same */
330 reg = (vector_id) |
331 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
332 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
333 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
334 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
335 wr32(hw, reg_idx, reg);
336 }
337
338 /* if the vf is running in polling mode and using interrupt zero,
339 * need to disable auto-mask on enabling zero interrupt for VFs.
340 */
341 if ((vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
342 (vector_id == 0)) {
343 reg = rd32(hw, I40E_GLINT_CTL);
344 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
345 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
346 wr32(hw, I40E_GLINT_CTL, reg);
347 }
348 }
349
350irq_list_done:
351 i40e_flush(hw);
352}
353
354/**
355 * i40e_release_iwarp_qvlist
356 * @vf: pointer to the VF.
357 *
358 **/
359static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
360{
361 struct i40e_pf *pf = vf->pf;
362 struct i40e_virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
363 u32 msix_vf;
364 u32 i;
365
366 if (!vf->qvlist_info)
367 return;
368
369 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
370 for (i = 0; i < qvlist_info->num_vectors; i++) {
371 struct i40e_virtchnl_iwarp_qv_info *qv_info;
372 u32 next_q_index, next_q_type;
373 struct i40e_hw *hw = &pf->hw;
374 u32 v_idx, reg_idx, reg;
375
376 qv_info = &qvlist_info->qv_info[i];
377 if (!qv_info)
378 continue;
379 v_idx = qv_info->v_idx;
380 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
381 /* Figure out the queue after CEQ and make that the
382 * first queue.
383 */
384 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
385 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
386 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
387 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
388 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
389 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
390
391 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
392 reg = (next_q_index &
393 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
394 (next_q_type <<
395 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
396
397 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
398 }
399 }
400 kfree(vf->qvlist_info);
401 vf->qvlist_info = NULL;
402}
403
404/**
405 * i40e_config_iwarp_qvlist
406 * @vf: pointer to the VF info
407 * @qvlist_info: queue and vector list
408 *
409 * Return 0 on success or < 0 on error
410 **/
411static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
412 struct i40e_virtchnl_iwarp_qvlist_info *qvlist_info)
413{
414 struct i40e_pf *pf = vf->pf;
415 struct i40e_hw *hw = &pf->hw;
416 struct i40e_virtchnl_iwarp_qv_info *qv_info;
417 u32 v_idx, i, reg_idx, reg;
418 u32 next_q_idx, next_q_type;
419 u32 msix_vf, size;
420
421 size = sizeof(struct i40e_virtchnl_iwarp_qvlist_info) +
422 (sizeof(struct i40e_virtchnl_iwarp_qv_info) *
423 (qvlist_info->num_vectors - 1));
424 vf->qvlist_info = kzalloc(size, GFP_KERNEL);
425 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
426
427 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
428 for (i = 0; i < qvlist_info->num_vectors; i++) {
429 qv_info = &qvlist_info->qv_info[i];
430 if (!qv_info)
431 continue;
432 v_idx = qv_info->v_idx;
433
434 /* Validate vector id belongs to this vf */
435 if (!i40e_vc_isvalid_vector_id(vf, v_idx))
436 goto err;
437
438 vf->qvlist_info->qv_info[i] = *qv_info;
439
440 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
441 /* We might be sharing the interrupt, so get the first queue
442 * index and type, push it down the list by adding the new
443 * queue on top. Also link it with the new queue in CEQCTL.
444 */
445 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
446 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
447 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
448 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
449 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
450
451 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
452 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
453 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
454 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
455 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
456 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
457 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
458 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
459
460 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
461 reg = (qv_info->ceq_idx &
462 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
463 (I40E_QUEUE_TYPE_PE_CEQ <<
464 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
465 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
466 }
467
468 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
469 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
470 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
471 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
472
473 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
474 }
475 }
476
477 return 0;
478err:
479 kfree(vf->qvlist_info);
480 vf->qvlist_info = NULL;
481 return -EINVAL;
482}
483
484/**
485 * i40e_config_vsi_tx_queue
486 * @vf: pointer to the VF info
487 * @vsi_id: id of VSI as provided by the FW
488 * @vsi_queue_id: vsi relative queue index
489 * @info: config. info
490 *
491 * configure tx queue
492 **/
493static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
494 u16 vsi_queue_id,
495 struct i40e_virtchnl_txq_info *info)
496{
497 struct i40e_pf *pf = vf->pf;
498 struct i40e_hw *hw = &pf->hw;
499 struct i40e_hmc_obj_txq tx_ctx;
500 struct i40e_vsi *vsi;
501 u16 pf_queue_id;
502 u32 qtx_ctl;
503 int ret = 0;
504
505 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
506 vsi = i40e_find_vsi_from_id(pf, vsi_id);
507
508 /* clear the context structure first */
509 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
510
511 /* only set the required fields */
512 tx_ctx.base = info->dma_ring_addr / 128;
513 tx_ctx.qlen = info->ring_len;
514 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
515 tx_ctx.rdylist_act = 0;
516 tx_ctx.head_wb_ena = info->headwb_enabled;
517 tx_ctx.head_wb_addr = info->dma_headwb_addr;
518
519 /* clear the context in the HMC */
520 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
521 if (ret) {
522 dev_err(&pf->pdev->dev,
523 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
524 pf_queue_id, ret);
525 ret = -ENOENT;
526 goto error_context;
527 }
528
529 /* set the context in the HMC */
530 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
531 if (ret) {
532 dev_err(&pf->pdev->dev,
533 "Failed to set VF LAN Tx queue context %d error: %d\n",
534 pf_queue_id, ret);
535 ret = -ENOENT;
536 goto error_context;
537 }
538
539 /* associate this queue with the PCI VF function */
540 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
541 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
542 & I40E_QTX_CTL_PF_INDX_MASK);
543 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
544 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
545 & I40E_QTX_CTL_VFVM_INDX_MASK);
546 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
547 i40e_flush(hw);
548
549error_context:
550 return ret;
551}
552
553/**
554 * i40e_config_vsi_rx_queue
555 * @vf: pointer to the VF info
556 * @vsi_id: id of VSI as provided by the FW
557 * @vsi_queue_id: vsi relative queue index
558 * @info: config. info
559 *
560 * configure rx queue
561 **/
562static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
563 u16 vsi_queue_id,
564 struct i40e_virtchnl_rxq_info *info)
565{
566 struct i40e_pf *pf = vf->pf;
567 struct i40e_hw *hw = &pf->hw;
568 struct i40e_hmc_obj_rxq rx_ctx;
569 u16 pf_queue_id;
570 int ret = 0;
571
572 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
573
574 /* clear the context structure first */
575 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
576
577 /* only set the required fields */
578 rx_ctx.base = info->dma_ring_addr / 128;
579 rx_ctx.qlen = info->ring_len;
580
581 if (info->splithdr_enabled) {
582 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
583 I40E_RX_SPLIT_IP |
584 I40E_RX_SPLIT_TCP_UDP |
585 I40E_RX_SPLIT_SCTP;
586 /* header length validation */
587 if (info->hdr_size > ((2 * 1024) - 64)) {
588 ret = -EINVAL;
589 goto error_param;
590 }
591 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
592
593 /* set splitalways mode 10b */
594 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
595 }
596
597 /* databuffer length validation */
598 if (info->databuffer_size > ((16 * 1024) - 128)) {
599 ret = -EINVAL;
600 goto error_param;
601 }
602 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
603
604 /* max pkt. length validation */
605 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
606 ret = -EINVAL;
607 goto error_param;
608 }
609 rx_ctx.rxmax = info->max_pkt_size;
610
611 /* enable 32bytes desc always */
612 rx_ctx.dsize = 1;
613
614 /* default values */
615 rx_ctx.lrxqthresh = 2;
616 rx_ctx.crcstrip = 1;
617 rx_ctx.prefena = 1;
618 rx_ctx.l2tsel = 1;
619
620 /* clear the context in the HMC */
621 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
622 if (ret) {
623 dev_err(&pf->pdev->dev,
624 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
625 pf_queue_id, ret);
626 ret = -ENOENT;
627 goto error_param;
628 }
629
630 /* set the context in the HMC */
631 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
632 if (ret) {
633 dev_err(&pf->pdev->dev,
634 "Failed to set VF LAN Rx queue context %d error: %d\n",
635 pf_queue_id, ret);
636 ret = -ENOENT;
637 goto error_param;
638 }
639
640error_param:
641 return ret;
642}
643
644/**
645 * i40e_alloc_vsi_res
646 * @vf: pointer to the VF info
647 * @type: type of VSI to allocate
648 *
649 * alloc VF vsi context & resources
650 **/
651static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
652{
653 struct i40e_mac_filter *f = NULL;
654 struct i40e_pf *pf = vf->pf;
655 struct i40e_vsi *vsi;
656 int ret = 0;
657
658 vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id);
659
660 if (!vsi) {
661 dev_err(&pf->pdev->dev,
662 "add vsi failed for VF %d, aq_err %d\n",
663 vf->vf_id, pf->hw.aq.asq_last_status);
664 ret = -ENOENT;
665 goto error_alloc_vsi_res;
666 }
667 if (type == I40E_VSI_SRIOV) {
668 u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
669
670 vf->lan_vsi_idx = vsi->idx;
671 vf->lan_vsi_id = vsi->id;
672 /* If the port VLAN has been configured and then the
673 * VF driver was removed then the VSI port VLAN
674 * configuration was destroyed. Check if there is
675 * a port VLAN and restore the VSI configuration if
676 * needed.
677 */
678 if (vf->port_vlan_id)
679 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
680
681 spin_lock_bh(&vsi->mac_filter_list_lock);
682 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
683 f = i40e_add_filter(vsi, vf->default_lan_addr.addr,
684 vf->port_vlan_id ? vf->port_vlan_id : -1,
685 true, false);
686 if (!f)
687 dev_info(&pf->pdev->dev,
688 "Could not add MAC filter %pM for VF %d\n",
689 vf->default_lan_addr.addr, vf->vf_id);
690 }
691 f = i40e_add_filter(vsi, brdcast,
692 vf->port_vlan_id ? vf->port_vlan_id : -1,
693 true, false);
694 if (!f)
695 dev_info(&pf->pdev->dev,
696 "Could not allocate VF broadcast filter\n");
697 spin_unlock_bh(&vsi->mac_filter_list_lock);
698 }
699
700 /* program mac filter */
701 ret = i40e_sync_vsi_filters(vsi);
702 if (ret)
703 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
704
705 /* Set VF bandwidth if specified */
706 if (vf->tx_rate) {
707 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
708 vf->tx_rate / 50, 0, NULL);
709 if (ret)
710 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
711 vf->vf_id, ret);
712 }
713
714error_alloc_vsi_res:
715 return ret;
716}
717
718/**
719 * i40e_enable_vf_mappings
720 * @vf: pointer to the VF info
721 *
722 * enable VF mappings
723 **/
724static void i40e_enable_vf_mappings(struct i40e_vf *vf)
725{
726 struct i40e_pf *pf = vf->pf;
727 struct i40e_hw *hw = &pf->hw;
728 u32 reg, total_queue_pairs = 0;
729 int j;
730
731 /* Tell the hardware we're using noncontiguous mapping. HW requires
732 * that VF queues be mapped using this method, even when they are
733 * contiguous in real life
734 */
735 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
736 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
737
738 /* enable VF vplan_qtable mappings */
739 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
740 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
741
742 /* map PF queues to VF queues */
743 for (j = 0; j < pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; j++) {
744 u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id, j);
745
746 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
747 wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg);
748 total_queue_pairs++;
749 }
750
751 /* map PF queues to VSI */
752 for (j = 0; j < 7; j++) {
753 if (j * 2 >= pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs) {
754 reg = 0x07FF07FF; /* unused */
755 } else {
756 u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
757 j * 2);
758 reg = qid;
759 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
760 (j * 2) + 1);
761 reg |= qid << 16;
762 }
763 i40e_write_rx_ctl(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id),
764 reg);
765 }
766
767 i40e_flush(hw);
768}
769
770/**
771 * i40e_disable_vf_mappings
772 * @vf: pointer to the VF info
773 *
774 * disable VF mappings
775 **/
776static void i40e_disable_vf_mappings(struct i40e_vf *vf)
777{
778 struct i40e_pf *pf = vf->pf;
779 struct i40e_hw *hw = &pf->hw;
780 int i;
781
782 /* disable qp mappings */
783 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
784 for (i = 0; i < I40E_MAX_VSI_QP; i++)
785 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
786 I40E_QUEUE_END_OF_LIST);
787 i40e_flush(hw);
788}
789
790/**
791 * i40e_free_vf_res
792 * @vf: pointer to the VF info
793 *
794 * free VF resources
795 **/
796static void i40e_free_vf_res(struct i40e_vf *vf)
797{
798 struct i40e_pf *pf = vf->pf;
799 struct i40e_hw *hw = &pf->hw;
800 u32 reg_idx, reg;
801 int i, msix_vf;
802
803 /* free vsi & disconnect it from the parent uplink */
804 if (vf->lan_vsi_idx) {
805 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
806 vf->lan_vsi_idx = 0;
807 vf->lan_vsi_id = 0;
808 }
809 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
810
811 /* disable interrupts so the VF starts in a known state */
812 for (i = 0; i < msix_vf; i++) {
813 /* format is same for both registers */
814 if (0 == i)
815 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
816 else
817 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
818 (vf->vf_id))
819 + (i - 1));
820 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
821 i40e_flush(hw);
822 }
823
824 /* clear the irq settings */
825 for (i = 0; i < msix_vf; i++) {
826 /* format is same for both registers */
827 if (0 == i)
828 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
829 else
830 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
831 (vf->vf_id))
832 + (i - 1));
833 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
834 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
835 wr32(hw, reg_idx, reg);
836 i40e_flush(hw);
837 }
838 /* reset some of the state varibles keeping
839 * track of the resources
840 */
841 vf->num_queue_pairs = 0;
842 vf->vf_states = 0;
843 clear_bit(I40E_VF_STAT_INIT, &vf->vf_states);
844}
845
846/**
847 * i40e_alloc_vf_res
848 * @vf: pointer to the VF info
849 *
850 * allocate VF resources
851 **/
852static int i40e_alloc_vf_res(struct i40e_vf *vf)
853{
854 struct i40e_pf *pf = vf->pf;
855 int total_queue_pairs = 0;
856 int ret;
857
858 /* allocate hw vsi context & associated resources */
859 ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV);
860 if (ret)
861 goto error_alloc;
862 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
863 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
864
865 /* store the total qps number for the runtime
866 * VF req validation
867 */
868 vf->num_queue_pairs = total_queue_pairs;
869
870 /* VF is now completely initialized */
871 set_bit(I40E_VF_STAT_INIT, &vf->vf_states);
872
873error_alloc:
874 if (ret)
875 i40e_free_vf_res(vf);
876
877 return ret;
878}
879
880#define VF_DEVICE_STATUS 0xAA
881#define VF_TRANS_PENDING_MASK 0x20
882/**
883 * i40e_quiesce_vf_pci
884 * @vf: pointer to the VF structure
885 *
886 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
887 * if the transactions never clear.
888 **/
889static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
890{
891 struct i40e_pf *pf = vf->pf;
892 struct i40e_hw *hw = &pf->hw;
893 int vf_abs_id, i;
894 u32 reg;
895
896 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
897
898 wr32(hw, I40E_PF_PCI_CIAA,
899 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
900 for (i = 0; i < 100; i++) {
901 reg = rd32(hw, I40E_PF_PCI_CIAD);
902 if ((reg & VF_TRANS_PENDING_MASK) == 0)
903 return 0;
904 udelay(1);
905 }
906 return -EIO;
907}
908
909/**
910 * i40e_reset_vf
911 * @vf: pointer to the VF structure
912 * @flr: VFLR was issued or not
913 *
914 * reset the VF
915 **/
916void i40e_reset_vf(struct i40e_vf *vf, bool flr)
917{
918 struct i40e_pf *pf = vf->pf;
919 struct i40e_hw *hw = &pf->hw;
920 bool rsd = false;
921 int i;
922 u32 reg;
923
924 if (test_and_set_bit(__I40E_VF_DISABLE, &pf->state))
925 return;
926
927 /* warn the VF */
928 clear_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
929
930 /* In the case of a VFLR, the HW has already reset the VF and we
931 * just need to clean up, so don't hit the VFRTRIG register.
932 */
933 if (!flr) {
934 /* reset VF using VPGEN_VFRTRIG reg */
935 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
936 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
937 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
938 i40e_flush(hw);
939 }
940
941 if (i40e_quiesce_vf_pci(vf))
942 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
943 vf->vf_id);
944
945 /* poll VPGEN_VFRSTAT reg to make sure
946 * that reset is complete
947 */
948 for (i = 0; i < 10; i++) {
949 /* VF reset requires driver to first reset the VF and then
950 * poll the status register to make sure that the reset
951 * completed successfully. Due to internal HW FIFO flushes,
952 * we must wait 10ms before the register will be valid.
953 */
954 usleep_range(10000, 20000);
955 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
956 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
957 rsd = true;
958 break;
959 }
960 }
961
962 if (flr)
963 usleep_range(10000, 20000);
964
965 if (!rsd)
966 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
967 vf->vf_id);
968 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_COMPLETED);
969 /* clear the reset bit in the VPGEN_VFRTRIG reg */
970 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
971 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
972 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
973
974 /* On initial reset, we won't have any queues */
975 if (vf->lan_vsi_idx == 0)
976 goto complete_reset;
977
978 i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false);
979complete_reset:
980 /* reallocate VF resources to reset the VSI state */
981 i40e_free_vf_res(vf);
982 if (!i40e_alloc_vf_res(vf)) {
983 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
984 i40e_enable_vf_mappings(vf);
985 set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
986 clear_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
987 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
988 }
989 /* tell the VF the reset is done */
990 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE);
991 i40e_flush(hw);
992 clear_bit(__I40E_VF_DISABLE, &pf->state);
993}
994
995/**
996 * i40e_free_vfs
997 * @pf: pointer to the PF structure
998 *
999 * free VF resources
1000 **/
1001void i40e_free_vfs(struct i40e_pf *pf)
1002{
1003 struct i40e_hw *hw = &pf->hw;
1004 u32 reg_idx, bit_idx;
1005 int i, tmp, vf_id;
1006
1007 if (!pf->vf)
1008 return;
1009 while (test_and_set_bit(__I40E_VF_DISABLE, &pf->state))
1010 usleep_range(1000, 2000);
1011
1012 i40e_notify_client_of_vf_enable(pf, 0);
1013 for (i = 0; i < pf->num_alloc_vfs; i++)
1014 if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
1015 i40e_vsi_control_rings(pf->vsi[pf->vf[i].lan_vsi_idx],
1016 false);
1017
1018 /* Disable IOV before freeing resources. This lets any VF drivers
1019 * running in the host get themselves cleaned up before we yank
1020 * the carpet out from underneath their feet.
1021 */
1022 if (!pci_vfs_assigned(pf->pdev))
1023 pci_disable_sriov(pf->pdev);
1024 else
1025 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1026
1027 msleep(20); /* let any messages in transit get finished up */
1028
1029 /* free up VF resources */
1030 tmp = pf->num_alloc_vfs;
1031 pf->num_alloc_vfs = 0;
1032 for (i = 0; i < tmp; i++) {
1033 if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
1034 i40e_free_vf_res(&pf->vf[i]);
1035 /* disable qp mappings */
1036 i40e_disable_vf_mappings(&pf->vf[i]);
1037 }
1038
1039 kfree(pf->vf);
1040 pf->vf = NULL;
1041
1042 /* This check is for when the driver is unloaded while VFs are
1043 * assigned. Setting the number of VFs to 0 through sysfs is caught
1044 * before this function ever gets called.
1045 */
1046 if (!pci_vfs_assigned(pf->pdev)) {
1047 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1048 * work correctly when SR-IOV gets re-enabled.
1049 */
1050 for (vf_id = 0; vf_id < tmp; vf_id++) {
1051 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1052 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1053 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1054 }
1055 }
1056 clear_bit(__I40E_VF_DISABLE, &pf->state);
1057}
1058
1059#ifdef CONFIG_PCI_IOV
1060/**
1061 * i40e_alloc_vfs
1062 * @pf: pointer to the PF structure
1063 * @num_alloc_vfs: number of VFs to allocate
1064 *
1065 * allocate VF resources
1066 **/
1067int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1068{
1069 struct i40e_vf *vfs;
1070 int i, ret = 0;
1071
1072 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1073 i40e_irq_dynamic_disable_icr0(pf);
1074
1075 /* Check to see if we're just allocating resources for extant VFs */
1076 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1077 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1078 if (ret) {
1079 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1080 pf->num_alloc_vfs = 0;
1081 goto err_iov;
1082 }
1083 }
1084 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1085 /* allocate memory */
1086 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1087 if (!vfs) {
1088 ret = -ENOMEM;
1089 goto err_alloc;
1090 }
1091 pf->vf = vfs;
1092
1093 /* apply default profile */
1094 for (i = 0; i < num_alloc_vfs; i++) {
1095 vfs[i].pf = pf;
1096 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1097 vfs[i].vf_id = i;
1098
1099 /* assign default capabilities */
1100 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1101 vfs[i].spoofchk = true;
1102 /* VF resources get allocated during reset */
1103 i40e_reset_vf(&vfs[i], false);
1104
1105 }
1106 pf->num_alloc_vfs = num_alloc_vfs;
1107
1108err_alloc:
1109 if (ret)
1110 i40e_free_vfs(pf);
1111err_iov:
1112 /* Re-enable interrupt 0. */
1113 i40e_irq_dynamic_enable_icr0(pf, false);
1114 return ret;
1115}
1116
1117#endif
1118/**
1119 * i40e_pci_sriov_enable
1120 * @pdev: pointer to a pci_dev structure
1121 * @num_vfs: number of VFs to allocate
1122 *
1123 * Enable or change the number of VFs
1124 **/
1125static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1126{
1127#ifdef CONFIG_PCI_IOV
1128 struct i40e_pf *pf = pci_get_drvdata(pdev);
1129 int pre_existing_vfs = pci_num_vf(pdev);
1130 int err = 0;
1131
1132 if (test_bit(__I40E_TESTING, &pf->state)) {
1133 dev_warn(&pdev->dev,
1134 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1135 err = -EPERM;
1136 goto err_out;
1137 }
1138
1139 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1140 i40e_free_vfs(pf);
1141 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1142 goto out;
1143
1144 if (num_vfs > pf->num_req_vfs) {
1145 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1146 num_vfs, pf->num_req_vfs);
1147 err = -EPERM;
1148 goto err_out;
1149 }
1150
1151 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1152 err = i40e_alloc_vfs(pf, num_vfs);
1153 if (err) {
1154 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1155 goto err_out;
1156 }
1157
1158out:
1159 return num_vfs;
1160
1161err_out:
1162 return err;
1163#endif
1164 return 0;
1165}
1166
1167/**
1168 * i40e_pci_sriov_configure
1169 * @pdev: pointer to a pci_dev structure
1170 * @num_vfs: number of VFs to allocate
1171 *
1172 * Enable or change the number of VFs. Called when the user updates the number
1173 * of VFs in sysfs.
1174 **/
1175int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1176{
1177 struct i40e_pf *pf = pci_get_drvdata(pdev);
1178
1179 if (num_vfs) {
1180 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1181 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1182 i40e_do_reset_safe(pf,
1183 BIT_ULL(__I40E_PF_RESET_REQUESTED));
1184 }
1185 return i40e_pci_sriov_enable(pdev, num_vfs);
1186 }
1187
1188 if (!pci_vfs_assigned(pf->pdev)) {
1189 i40e_free_vfs(pf);
1190 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1191 i40e_do_reset_safe(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
1192 } else {
1193 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1194 return -EINVAL;
1195 }
1196 return 0;
1197}
1198
1199/***********************virtual channel routines******************/
1200
1201/**
1202 * i40e_vc_send_msg_to_vf
1203 * @vf: pointer to the VF info
1204 * @v_opcode: virtual channel opcode
1205 * @v_retval: virtual channel return value
1206 * @msg: pointer to the msg buffer
1207 * @msglen: msg length
1208 *
1209 * send msg to VF
1210 **/
1211static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1212 u32 v_retval, u8 *msg, u16 msglen)
1213{
1214 struct i40e_pf *pf;
1215 struct i40e_hw *hw;
1216 int abs_vf_id;
1217 i40e_status aq_ret;
1218
1219 /* validate the request */
1220 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1221 return -EINVAL;
1222
1223 pf = vf->pf;
1224 hw = &pf->hw;
1225 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1226
1227 /* single place to detect unsuccessful return values */
1228 if (v_retval) {
1229 vf->num_invalid_msgs++;
1230 dev_err(&pf->pdev->dev, "VF %d failed opcode %d, error: %d\n",
1231 vf->vf_id, v_opcode, v_retval);
1232 if (vf->num_invalid_msgs >
1233 I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
1234 dev_err(&pf->pdev->dev,
1235 "Number of invalid messages exceeded for VF %d\n",
1236 vf->vf_id);
1237 dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
1238 set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
1239 }
1240 } else {
1241 vf->num_valid_msgs++;
1242 /* reset the invalid counter, if a valid message is received. */
1243 vf->num_invalid_msgs = 0;
1244 }
1245
1246 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1247 msg, msglen, NULL);
1248 if (aq_ret) {
1249 dev_err(&pf->pdev->dev,
1250 "Unable to send the message to VF %d aq_err %d\n",
1251 vf->vf_id, pf->hw.aq.asq_last_status);
1252 return -EIO;
1253 }
1254
1255 return 0;
1256}
1257
1258/**
1259 * i40e_vc_send_resp_to_vf
1260 * @vf: pointer to the VF info
1261 * @opcode: operation code
1262 * @retval: return value
1263 *
1264 * send resp msg to VF
1265 **/
1266static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1267 enum i40e_virtchnl_ops opcode,
1268 i40e_status retval)
1269{
1270 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1271}
1272
1273/**
1274 * i40e_vc_get_version_msg
1275 * @vf: pointer to the VF info
1276 *
1277 * called from the VF to request the API version used by the PF
1278 **/
1279static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
1280{
1281 struct i40e_virtchnl_version_info info = {
1282 I40E_VIRTCHNL_VERSION_MAJOR, I40E_VIRTCHNL_VERSION_MINOR
1283 };
1284
1285 vf->vf_ver = *(struct i40e_virtchnl_version_info *)msg;
1286 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
1287 if (VF_IS_V10(vf))
1288 info.minor = I40E_VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
1289 return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_VERSION,
1290 I40E_SUCCESS, (u8 *)&info,
1291 sizeof(struct
1292 i40e_virtchnl_version_info));
1293}
1294
1295/**
1296 * i40e_vc_get_vf_resources_msg
1297 * @vf: pointer to the VF info
1298 * @msg: pointer to the msg buffer
1299 * @msglen: msg length
1300 *
1301 * called from the VF to request its resources
1302 **/
1303static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
1304{
1305 struct i40e_virtchnl_vf_resource *vfres = NULL;
1306 struct i40e_pf *pf = vf->pf;
1307 i40e_status aq_ret = 0;
1308 struct i40e_vsi *vsi;
1309 int i = 0, len = 0;
1310 int num_vsis = 1;
1311 int ret;
1312
1313 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
1314 aq_ret = I40E_ERR_PARAM;
1315 goto err;
1316 }
1317
1318 len = (sizeof(struct i40e_virtchnl_vf_resource) +
1319 sizeof(struct i40e_virtchnl_vsi_resource) * num_vsis);
1320
1321 vfres = kzalloc(len, GFP_KERNEL);
1322 if (!vfres) {
1323 aq_ret = I40E_ERR_NO_MEMORY;
1324 len = 0;
1325 goto err;
1326 }
1327 if (VF_IS_V11(vf))
1328 vf->driver_caps = *(u32 *)msg;
1329 else
1330 vf->driver_caps = I40E_VIRTCHNL_VF_OFFLOAD_L2 |
1331 I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG |
1332 I40E_VIRTCHNL_VF_OFFLOAD_VLAN;
1333
1334 vfres->vf_offload_flags = I40E_VIRTCHNL_VF_OFFLOAD_L2;
1335 vsi = pf->vsi[vf->lan_vsi_idx];
1336 if (!vsi->info.pvid)
1337 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_VLAN;
1338
1339 if (i40e_vf_client_capable(pf, vf->vf_id, I40E_CLIENT_IWARP) &&
1340 (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_IWARP)) {
1341 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_IWARP;
1342 set_bit(I40E_VF_STAT_IWARPENA, &vf->vf_states);
1343 }
1344
1345 if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
1346 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ)
1347 vfres->vf_offload_flags |=
1348 I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ;
1349 } else {
1350 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG;
1351 }
1352
1353 if (pf->flags & I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
1354 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1355 vfres->vf_offload_flags |=
1356 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
1357 }
1358
1359 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING)
1360 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING;
1361
1362 if (pf->flags & I40E_FLAG_WB_ON_ITR_CAPABLE) {
1363 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
1364 vfres->vf_offload_flags |=
1365 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
1366 }
1367
1368 vfres->num_vsis = num_vsis;
1369 vfres->num_queue_pairs = vf->num_queue_pairs;
1370 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
1371 if (vf->lan_vsi_idx) {
1372 vfres->vsi_res[i].vsi_id = vf->lan_vsi_id;
1373 vfres->vsi_res[i].vsi_type = I40E_VSI_SRIOV;
1374 vfres->vsi_res[i].num_queue_pairs = vsi->alloc_queue_pairs;
1375 /* VFs only use TC 0 */
1376 vfres->vsi_res[i].qset_handle
1377 = le16_to_cpu(vsi->info.qs_handle[0]);
1378 ether_addr_copy(vfres->vsi_res[i].default_mac_addr,
1379 vf->default_lan_addr.addr);
1380 i++;
1381 }
1382 set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
1383
1384err:
1385 /* send the response back to the VF */
1386 ret = i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
1387 aq_ret, (u8 *)vfres, len);
1388
1389 kfree(vfres);
1390 return ret;
1391}
1392
1393/**
1394 * i40e_vc_reset_vf_msg
1395 * @vf: pointer to the VF info
1396 * @msg: pointer to the msg buffer
1397 * @msglen: msg length
1398 *
1399 * called from the VF to reset itself,
1400 * unlike other virtchnl messages, PF driver
1401 * doesn't send the response back to the VF
1402 **/
1403static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
1404{
1405 if (test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
1406 i40e_reset_vf(vf, false);
1407}
1408
1409/**
1410 * i40e_vc_config_promiscuous_mode_msg
1411 * @vf: pointer to the VF info
1412 * @msg: pointer to the msg buffer
1413 * @msglen: msg length
1414 *
1415 * called from the VF to configure the promiscuous mode of
1416 * VF vsis
1417 **/
1418static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf,
1419 u8 *msg, u16 msglen)
1420{
1421 struct i40e_virtchnl_promisc_info *info =
1422 (struct i40e_virtchnl_promisc_info *)msg;
1423 struct i40e_pf *pf = vf->pf;
1424 struct i40e_hw *hw = &pf->hw;
1425 struct i40e_vsi *vsi;
1426 bool allmulti = false;
1427 i40e_status aq_ret;
1428
1429 vsi = i40e_find_vsi_from_id(pf, info->vsi_id);
1430 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1431 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1432 !i40e_vc_isvalid_vsi_id(vf, info->vsi_id) ||
1433 (vsi->type != I40E_VSI_FCOE)) {
1434 aq_ret = I40E_ERR_PARAM;
1435 goto error_param;
1436 }
1437 if (info->flags & I40E_FLAG_VF_MULTICAST_PROMISC)
1438 allmulti = true;
1439 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid,
1440 allmulti, NULL);
1441
1442error_param:
1443 /* send the response to the VF */
1444 return i40e_vc_send_resp_to_vf(vf,
1445 I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
1446 aq_ret);
1447}
1448
1449/**
1450 * i40e_vc_config_queues_msg
1451 * @vf: pointer to the VF info
1452 * @msg: pointer to the msg buffer
1453 * @msglen: msg length
1454 *
1455 * called from the VF to configure the rx/tx
1456 * queues
1457 **/
1458static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1459{
1460 struct i40e_virtchnl_vsi_queue_config_info *qci =
1461 (struct i40e_virtchnl_vsi_queue_config_info *)msg;
1462 struct i40e_virtchnl_queue_pair_info *qpi;
1463 struct i40e_pf *pf = vf->pf;
1464 u16 vsi_id, vsi_queue_id;
1465 i40e_status aq_ret = 0;
1466 int i;
1467
1468 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1469 aq_ret = I40E_ERR_PARAM;
1470 goto error_param;
1471 }
1472
1473 vsi_id = qci->vsi_id;
1474 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1475 aq_ret = I40E_ERR_PARAM;
1476 goto error_param;
1477 }
1478 for (i = 0; i < qci->num_queue_pairs; i++) {
1479 qpi = &qci->qpair[i];
1480 vsi_queue_id = qpi->txq.queue_id;
1481 if ((qpi->txq.vsi_id != vsi_id) ||
1482 (qpi->rxq.vsi_id != vsi_id) ||
1483 (qpi->rxq.queue_id != vsi_queue_id) ||
1484 !i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) {
1485 aq_ret = I40E_ERR_PARAM;
1486 goto error_param;
1487 }
1488
1489 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
1490 &qpi->rxq) ||
1491 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
1492 &qpi->txq)) {
1493 aq_ret = I40E_ERR_PARAM;
1494 goto error_param;
1495 }
1496 }
1497 /* set vsi num_queue_pairs in use to num configured by VF */
1498 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs = qci->num_queue_pairs;
1499
1500error_param:
1501 /* send the response to the VF */
1502 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
1503 aq_ret);
1504}
1505
1506/**
1507 * i40e_vc_config_irq_map_msg
1508 * @vf: pointer to the VF info
1509 * @msg: pointer to the msg buffer
1510 * @msglen: msg length
1511 *
1512 * called from the VF to configure the irq to
1513 * queue map
1514 **/
1515static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1516{
1517 struct i40e_virtchnl_irq_map_info *irqmap_info =
1518 (struct i40e_virtchnl_irq_map_info *)msg;
1519 struct i40e_virtchnl_vector_map *map;
1520 u16 vsi_id, vsi_queue_id, vector_id;
1521 i40e_status aq_ret = 0;
1522 unsigned long tempmap;
1523 int i;
1524
1525 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1526 aq_ret = I40E_ERR_PARAM;
1527 goto error_param;
1528 }
1529
1530 for (i = 0; i < irqmap_info->num_vectors; i++) {
1531 map = &irqmap_info->vecmap[i];
1532
1533 vector_id = map->vector_id;
1534 vsi_id = map->vsi_id;
1535 /* validate msg params */
1536 if (!i40e_vc_isvalid_vector_id(vf, vector_id) ||
1537 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1538 aq_ret = I40E_ERR_PARAM;
1539 goto error_param;
1540 }
1541
1542 /* lookout for the invalid queue index */
1543 tempmap = map->rxq_map;
1544 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1545 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
1546 vsi_queue_id)) {
1547 aq_ret = I40E_ERR_PARAM;
1548 goto error_param;
1549 }
1550 }
1551
1552 tempmap = map->txq_map;
1553 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1554 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
1555 vsi_queue_id)) {
1556 aq_ret = I40E_ERR_PARAM;
1557 goto error_param;
1558 }
1559 }
1560
1561 i40e_config_irq_link_list(vf, vsi_id, map);
1562 }
1563error_param:
1564 /* send the response to the VF */
1565 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
1566 aq_ret);
1567}
1568
1569/**
1570 * i40e_vc_enable_queues_msg
1571 * @vf: pointer to the VF info
1572 * @msg: pointer to the msg buffer
1573 * @msglen: msg length
1574 *
1575 * called from the VF to enable all or specific queue(s)
1576 **/
1577static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1578{
1579 struct i40e_virtchnl_queue_select *vqs =
1580 (struct i40e_virtchnl_queue_select *)msg;
1581 struct i40e_pf *pf = vf->pf;
1582 u16 vsi_id = vqs->vsi_id;
1583 i40e_status aq_ret = 0;
1584
1585 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1586 aq_ret = I40E_ERR_PARAM;
1587 goto error_param;
1588 }
1589
1590 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1591 aq_ret = I40E_ERR_PARAM;
1592 goto error_param;
1593 }
1594
1595 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
1596 aq_ret = I40E_ERR_PARAM;
1597 goto error_param;
1598 }
1599
1600 if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], true))
1601 aq_ret = I40E_ERR_TIMEOUT;
1602error_param:
1603 /* send the response to the VF */
1604 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
1605 aq_ret);
1606}
1607
1608/**
1609 * i40e_vc_disable_queues_msg
1610 * @vf: pointer to the VF info
1611 * @msg: pointer to the msg buffer
1612 * @msglen: msg length
1613 *
1614 * called from the VF to disable all or specific
1615 * queue(s)
1616 **/
1617static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1618{
1619 struct i40e_virtchnl_queue_select *vqs =
1620 (struct i40e_virtchnl_queue_select *)msg;
1621 struct i40e_pf *pf = vf->pf;
1622 i40e_status aq_ret = 0;
1623
1624 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1625 aq_ret = I40E_ERR_PARAM;
1626 goto error_param;
1627 }
1628
1629 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1630 aq_ret = I40E_ERR_PARAM;
1631 goto error_param;
1632 }
1633
1634 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
1635 aq_ret = I40E_ERR_PARAM;
1636 goto error_param;
1637 }
1638
1639 if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false))
1640 aq_ret = I40E_ERR_TIMEOUT;
1641
1642error_param:
1643 /* send the response to the VF */
1644 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
1645 aq_ret);
1646}
1647
1648/**
1649 * i40e_vc_get_stats_msg
1650 * @vf: pointer to the VF info
1651 * @msg: pointer to the msg buffer
1652 * @msglen: msg length
1653 *
1654 * called from the VF to get vsi stats
1655 **/
1656static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1657{
1658 struct i40e_virtchnl_queue_select *vqs =
1659 (struct i40e_virtchnl_queue_select *)msg;
1660 struct i40e_pf *pf = vf->pf;
1661 struct i40e_eth_stats stats;
1662 i40e_status aq_ret = 0;
1663 struct i40e_vsi *vsi;
1664
1665 memset(&stats, 0, sizeof(struct i40e_eth_stats));
1666
1667 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1668 aq_ret = I40E_ERR_PARAM;
1669 goto error_param;
1670 }
1671
1672 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1673 aq_ret = I40E_ERR_PARAM;
1674 goto error_param;
1675 }
1676
1677 vsi = pf->vsi[vf->lan_vsi_idx];
1678 if (!vsi) {
1679 aq_ret = I40E_ERR_PARAM;
1680 goto error_param;
1681 }
1682 i40e_update_eth_stats(vsi);
1683 stats = vsi->eth_stats;
1684
1685error_param:
1686 /* send the response back to the VF */
1687 return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_STATS, aq_ret,
1688 (u8 *)&stats, sizeof(stats));
1689}
1690
1691/**
1692 * i40e_check_vf_permission
1693 * @vf: pointer to the VF info
1694 * @macaddr: pointer to the MAC Address being checked
1695 *
1696 * Check if the VF has permission to add or delete unicast MAC address
1697 * filters and return error code -EPERM if not. Then check if the
1698 * address filter requested is broadcast or zero and if so return
1699 * an invalid MAC address error code.
1700 **/
1701static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr)
1702{
1703 struct i40e_pf *pf = vf->pf;
1704 int ret = 0;
1705
1706 if (is_broadcast_ether_addr(macaddr) ||
1707 is_zero_ether_addr(macaddr)) {
1708 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr);
1709 ret = I40E_ERR_INVALID_MAC_ADDR;
1710 } else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr) &&
1711 !ether_addr_equal(macaddr, vf->default_lan_addr.addr)) {
1712 /* If the host VMM administrator has set the VF MAC address
1713 * administratively via the ndo_set_vf_mac command then deny
1714 * permission to the VF to add or delete unicast MAC addresses.
1715 * The VF may request to set the MAC address filter already
1716 * assigned to it so do not return an error in that case.
1717 */
1718 dev_err(&pf->pdev->dev,
1719 "VF attempting to override administratively set MAC address\nPlease reload the VF driver to resume normal operation\n");
1720 ret = -EPERM;
1721 }
1722 return ret;
1723}
1724
1725/**
1726 * i40e_vc_add_mac_addr_msg
1727 * @vf: pointer to the VF info
1728 * @msg: pointer to the msg buffer
1729 * @msglen: msg length
1730 *
1731 * add guest mac address filter
1732 **/
1733static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1734{
1735 struct i40e_virtchnl_ether_addr_list *al =
1736 (struct i40e_virtchnl_ether_addr_list *)msg;
1737 struct i40e_pf *pf = vf->pf;
1738 struct i40e_vsi *vsi = NULL;
1739 u16 vsi_id = al->vsi_id;
1740 i40e_status ret = 0;
1741 int i;
1742
1743 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1744 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1745 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1746 ret = I40E_ERR_PARAM;
1747 goto error_param;
1748 }
1749
1750 for (i = 0; i < al->num_elements; i++) {
1751 ret = i40e_check_vf_permission(vf, al->list[i].addr);
1752 if (ret)
1753 goto error_param;
1754 }
1755 vsi = pf->vsi[vf->lan_vsi_idx];
1756
1757 /* Lock once, because all function inside for loop accesses VSI's
1758 * MAC filter list which needs to be protected using same lock.
1759 */
1760 spin_lock_bh(&vsi->mac_filter_list_lock);
1761
1762 /* add new addresses to the list */
1763 for (i = 0; i < al->num_elements; i++) {
1764 struct i40e_mac_filter *f;
1765
1766 f = i40e_find_mac(vsi, al->list[i].addr, true, false);
1767 if (!f) {
1768 if (i40e_is_vsi_in_vlan(vsi))
1769 f = i40e_put_mac_in_vlan(vsi, al->list[i].addr,
1770 true, false);
1771 else
1772 f = i40e_add_filter(vsi, al->list[i].addr, -1,
1773 true, false);
1774 }
1775
1776 if (!f) {
1777 dev_err(&pf->pdev->dev,
1778 "Unable to add MAC filter %pM for VF %d\n",
1779 al->list[i].addr, vf->vf_id);
1780 ret = I40E_ERR_PARAM;
1781 spin_unlock_bh(&vsi->mac_filter_list_lock);
1782 goto error_param;
1783 }
1784 }
1785 spin_unlock_bh(&vsi->mac_filter_list_lock);
1786
1787 /* program the updated filter list */
1788 ret = i40e_sync_vsi_filters(vsi);
1789 if (ret)
1790 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
1791 vf->vf_id, ret);
1792
1793error_param:
1794 /* send the response to the VF */
1795 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
1796 ret);
1797}
1798
1799/**
1800 * i40e_vc_del_mac_addr_msg
1801 * @vf: pointer to the VF info
1802 * @msg: pointer to the msg buffer
1803 * @msglen: msg length
1804 *
1805 * remove guest mac address filter
1806 **/
1807static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1808{
1809 struct i40e_virtchnl_ether_addr_list *al =
1810 (struct i40e_virtchnl_ether_addr_list *)msg;
1811 struct i40e_pf *pf = vf->pf;
1812 struct i40e_vsi *vsi = NULL;
1813 u16 vsi_id = al->vsi_id;
1814 i40e_status ret = 0;
1815 int i;
1816
1817 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1818 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1819 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1820 ret = I40E_ERR_PARAM;
1821 goto error_param;
1822 }
1823
1824 for (i = 0; i < al->num_elements; i++) {
1825 if (is_broadcast_ether_addr(al->list[i].addr) ||
1826 is_zero_ether_addr(al->list[i].addr)) {
1827 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
1828 al->list[i].addr, vf->vf_id);
1829 ret = I40E_ERR_INVALID_MAC_ADDR;
1830 goto error_param;
1831 }
1832 }
1833 vsi = pf->vsi[vf->lan_vsi_idx];
1834
1835 spin_lock_bh(&vsi->mac_filter_list_lock);
1836 /* delete addresses from the list */
1837 for (i = 0; i < al->num_elements; i++)
1838 if (i40e_del_mac_all_vlan(vsi, al->list[i].addr, true, false)) {
1839 ret = I40E_ERR_INVALID_MAC_ADDR;
1840 spin_unlock_bh(&vsi->mac_filter_list_lock);
1841 goto error_param;
1842 }
1843
1844 spin_unlock_bh(&vsi->mac_filter_list_lock);
1845
1846 /* program the updated filter list */
1847 ret = i40e_sync_vsi_filters(vsi);
1848 if (ret)
1849 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
1850 vf->vf_id, ret);
1851
1852error_param:
1853 /* send the response to the VF */
1854 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
1855 ret);
1856}
1857
1858/**
1859 * i40e_vc_add_vlan_msg
1860 * @vf: pointer to the VF info
1861 * @msg: pointer to the msg buffer
1862 * @msglen: msg length
1863 *
1864 * program guest vlan id
1865 **/
1866static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1867{
1868 struct i40e_virtchnl_vlan_filter_list *vfl =
1869 (struct i40e_virtchnl_vlan_filter_list *)msg;
1870 struct i40e_pf *pf = vf->pf;
1871 struct i40e_vsi *vsi = NULL;
1872 u16 vsi_id = vfl->vsi_id;
1873 i40e_status aq_ret = 0;
1874 int i;
1875
1876 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1877 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1878 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1879 aq_ret = I40E_ERR_PARAM;
1880 goto error_param;
1881 }
1882
1883 for (i = 0; i < vfl->num_elements; i++) {
1884 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
1885 aq_ret = I40E_ERR_PARAM;
1886 dev_err(&pf->pdev->dev,
1887 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
1888 goto error_param;
1889 }
1890 }
1891 vsi = pf->vsi[vf->lan_vsi_idx];
1892 if (vsi->info.pvid) {
1893 aq_ret = I40E_ERR_PARAM;
1894 goto error_param;
1895 }
1896
1897 i40e_vlan_stripping_enable(vsi);
1898 for (i = 0; i < vfl->num_elements; i++) {
1899 /* add new VLAN filter */
1900 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
1901
1902 if (ret)
1903 dev_err(&pf->pdev->dev,
1904 "Unable to add VLAN filter %d for VF %d, error %d\n",
1905 vfl->vlan_id[i], vf->vf_id, ret);
1906 }
1907
1908error_param:
1909 /* send the response to the VF */
1910 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_VLAN, aq_ret);
1911}
1912
1913/**
1914 * i40e_vc_remove_vlan_msg
1915 * @vf: pointer to the VF info
1916 * @msg: pointer to the msg buffer
1917 * @msglen: msg length
1918 *
1919 * remove programmed guest vlan id
1920 **/
1921static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1922{
1923 struct i40e_virtchnl_vlan_filter_list *vfl =
1924 (struct i40e_virtchnl_vlan_filter_list *)msg;
1925 struct i40e_pf *pf = vf->pf;
1926 struct i40e_vsi *vsi = NULL;
1927 u16 vsi_id = vfl->vsi_id;
1928 i40e_status aq_ret = 0;
1929 int i;
1930
1931 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1932 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1933 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1934 aq_ret = I40E_ERR_PARAM;
1935 goto error_param;
1936 }
1937
1938 for (i = 0; i < vfl->num_elements; i++) {
1939 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
1940 aq_ret = I40E_ERR_PARAM;
1941 goto error_param;
1942 }
1943 }
1944
1945 vsi = pf->vsi[vf->lan_vsi_idx];
1946 if (vsi->info.pvid) {
1947 aq_ret = I40E_ERR_PARAM;
1948 goto error_param;
1949 }
1950
1951 for (i = 0; i < vfl->num_elements; i++) {
1952 int ret = i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
1953
1954 if (ret)
1955 dev_err(&pf->pdev->dev,
1956 "Unable to delete VLAN filter %d for VF %d, error %d\n",
1957 vfl->vlan_id[i], vf->vf_id, ret);
1958 }
1959
1960error_param:
1961 /* send the response to the VF */
1962 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_VLAN, aq_ret);
1963}
1964
1965/**
1966 * i40e_vc_iwarp_msg
1967 * @vf: pointer to the VF info
1968 * @msg: pointer to the msg buffer
1969 * @msglen: msg length
1970 *
1971 * called from the VF for the iwarp msgs
1972 **/
1973static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1974{
1975 struct i40e_pf *pf = vf->pf;
1976 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
1977 i40e_status aq_ret = 0;
1978
1979 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1980 !test_bit(I40E_VF_STAT_IWARPENA, &vf->vf_states)) {
1981 aq_ret = I40E_ERR_PARAM;
1982 goto error_param;
1983 }
1984
1985 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
1986 msg, msglen);
1987
1988error_param:
1989 /* send the response to the VF */
1990 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_IWARP,
1991 aq_ret);
1992}
1993
1994/**
1995 * i40e_vc_iwarp_qvmap_msg
1996 * @vf: pointer to the VF info
1997 * @msg: pointer to the msg buffer
1998 * @msglen: msg length
1999 * @config: config qvmap or release it
2000 *
2001 * called from the VF for the iwarp msgs
2002 **/
2003static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, u16 msglen,
2004 bool config)
2005{
2006 struct i40e_virtchnl_iwarp_qvlist_info *qvlist_info =
2007 (struct i40e_virtchnl_iwarp_qvlist_info *)msg;
2008 i40e_status aq_ret = 0;
2009
2010 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
2011 !test_bit(I40E_VF_STAT_IWARPENA, &vf->vf_states)) {
2012 aq_ret = I40E_ERR_PARAM;
2013 goto error_param;
2014 }
2015
2016 if (config) {
2017 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
2018 aq_ret = I40E_ERR_PARAM;
2019 } else {
2020 i40e_release_iwarp_qvlist(vf);
2021 }
2022
2023error_param:
2024 /* send the response to the VF */
2025 return i40e_vc_send_resp_to_vf(vf,
2026 config ? I40E_VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP :
2027 I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP,
2028 aq_ret);
2029}
2030
2031/**
2032 * i40e_vc_validate_vf_msg
2033 * @vf: pointer to the VF info
2034 * @msg: pointer to the msg buffer
2035 * @msglen: msg length
2036 * @msghndl: msg handle
2037 *
2038 * validate msg
2039 **/
2040static int i40e_vc_validate_vf_msg(struct i40e_vf *vf, u32 v_opcode,
2041 u32 v_retval, u8 *msg, u16 msglen)
2042{
2043 bool err_msg_format = false;
2044 int valid_len;
2045
2046 /* Check if VF is disabled. */
2047 if (test_bit(I40E_VF_STAT_DISABLED, &vf->vf_states))
2048 return I40E_ERR_PARAM;
2049
2050 /* Validate message length. */
2051 switch (v_opcode) {
2052 case I40E_VIRTCHNL_OP_VERSION:
2053 valid_len = sizeof(struct i40e_virtchnl_version_info);
2054 break;
2055 case I40E_VIRTCHNL_OP_RESET_VF:
2056 valid_len = 0;
2057 break;
2058 case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
2059 if (VF_IS_V11(vf))
2060 valid_len = sizeof(u32);
2061 else
2062 valid_len = 0;
2063 break;
2064 case I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE:
2065 valid_len = sizeof(struct i40e_virtchnl_txq_info);
2066 break;
2067 case I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE:
2068 valid_len = sizeof(struct i40e_virtchnl_rxq_info);
2069 break;
2070 case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
2071 valid_len = sizeof(struct i40e_virtchnl_vsi_queue_config_info);
2072 if (msglen >= valid_len) {
2073 struct i40e_virtchnl_vsi_queue_config_info *vqc =
2074 (struct i40e_virtchnl_vsi_queue_config_info *)msg;
2075 valid_len += (vqc->num_queue_pairs *
2076 sizeof(struct
2077 i40e_virtchnl_queue_pair_info));
2078 if (vqc->num_queue_pairs == 0)
2079 err_msg_format = true;
2080 }
2081 break;
2082 case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
2083 valid_len = sizeof(struct i40e_virtchnl_irq_map_info);
2084 if (msglen >= valid_len) {
2085 struct i40e_virtchnl_irq_map_info *vimi =
2086 (struct i40e_virtchnl_irq_map_info *)msg;
2087 valid_len += (vimi->num_vectors *
2088 sizeof(struct i40e_virtchnl_vector_map));
2089 if (vimi->num_vectors == 0)
2090 err_msg_format = true;
2091 }
2092 break;
2093 case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
2094 case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
2095 valid_len = sizeof(struct i40e_virtchnl_queue_select);
2096 break;
2097 case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
2098 case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
2099 valid_len = sizeof(struct i40e_virtchnl_ether_addr_list);
2100 if (msglen >= valid_len) {
2101 struct i40e_virtchnl_ether_addr_list *veal =
2102 (struct i40e_virtchnl_ether_addr_list *)msg;
2103 valid_len += veal->num_elements *
2104 sizeof(struct i40e_virtchnl_ether_addr);
2105 if (veal->num_elements == 0)
2106 err_msg_format = true;
2107 }
2108 break;
2109 case I40E_VIRTCHNL_OP_ADD_VLAN:
2110 case I40E_VIRTCHNL_OP_DEL_VLAN:
2111 valid_len = sizeof(struct i40e_virtchnl_vlan_filter_list);
2112 if (msglen >= valid_len) {
2113 struct i40e_virtchnl_vlan_filter_list *vfl =
2114 (struct i40e_virtchnl_vlan_filter_list *)msg;
2115 valid_len += vfl->num_elements * sizeof(u16);
2116 if (vfl->num_elements == 0)
2117 err_msg_format = true;
2118 }
2119 break;
2120 case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
2121 valid_len = sizeof(struct i40e_virtchnl_promisc_info);
2122 break;
2123 case I40E_VIRTCHNL_OP_GET_STATS:
2124 valid_len = sizeof(struct i40e_virtchnl_queue_select);
2125 break;
2126 case I40E_VIRTCHNL_OP_IWARP:
2127 /* These messages are opaque to us and will be validated in
2128 * the RDMA client code. We just need to check for nonzero
2129 * length. The firmware will enforce max length restrictions.
2130 */
2131 if (msglen)
2132 valid_len = msglen;
2133 else
2134 err_msg_format = true;
2135 break;
2136 case I40E_VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
2137 valid_len = 0;
2138 break;
2139 case I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
2140 valid_len = sizeof(struct i40e_virtchnl_iwarp_qvlist_info);
2141 if (msglen >= valid_len) {
2142 struct i40e_virtchnl_iwarp_qvlist_info *qv =
2143 (struct i40e_virtchnl_iwarp_qvlist_info *)msg;
2144 if (qv->num_vectors == 0) {
2145 err_msg_format = true;
2146 break;
2147 }
2148 valid_len += ((qv->num_vectors - 1) *
2149 sizeof(struct i40e_virtchnl_iwarp_qv_info));
2150 }
2151 break;
2152 /* These are always errors coming from the VF. */
2153 case I40E_VIRTCHNL_OP_EVENT:
2154 case I40E_VIRTCHNL_OP_UNKNOWN:
2155 default:
2156 return -EPERM;
2157 }
2158 /* few more checks */
2159 if ((valid_len != msglen) || (err_msg_format)) {
2160 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
2161 return -EINVAL;
2162 } else {
2163 return 0;
2164 }
2165}
2166
2167/**
2168 * i40e_vc_process_vf_msg
2169 * @pf: pointer to the PF structure
2170 * @vf_id: source VF id
2171 * @msg: pointer to the msg buffer
2172 * @msglen: msg length
2173 * @msghndl: msg handle
2174 *
2175 * called from the common aeq/arq handler to
2176 * process request from VF
2177 **/
2178int i40e_vc_process_vf_msg(struct i40e_pf *pf, u16 vf_id, u32 v_opcode,
2179 u32 v_retval, u8 *msg, u16 msglen)
2180{
2181 struct i40e_hw *hw = &pf->hw;
2182 unsigned int local_vf_id = vf_id - hw->func_caps.vf_base_id;
2183 struct i40e_vf *vf;
2184 int ret;
2185
2186 pf->vf_aq_requests++;
2187 if (local_vf_id >= pf->num_alloc_vfs)
2188 return -EINVAL;
2189 vf = &(pf->vf[local_vf_id]);
2190 /* perform basic checks on the msg */
2191 ret = i40e_vc_validate_vf_msg(vf, v_opcode, v_retval, msg, msglen);
2192
2193 if (ret) {
2194 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
2195 local_vf_id, v_opcode, msglen);
2196 return ret;
2197 }
2198
2199 switch (v_opcode) {
2200 case I40E_VIRTCHNL_OP_VERSION:
2201 ret = i40e_vc_get_version_msg(vf, msg);
2202 break;
2203 case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
2204 ret = i40e_vc_get_vf_resources_msg(vf, msg);
2205 break;
2206 case I40E_VIRTCHNL_OP_RESET_VF:
2207 i40e_vc_reset_vf_msg(vf);
2208 ret = 0;
2209 break;
2210 case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
2211 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen);
2212 break;
2213 case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
2214 ret = i40e_vc_config_queues_msg(vf, msg, msglen);
2215 break;
2216 case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
2217 ret = i40e_vc_config_irq_map_msg(vf, msg, msglen);
2218 break;
2219 case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
2220 ret = i40e_vc_enable_queues_msg(vf, msg, msglen);
2221 i40e_vc_notify_vf_link_state(vf);
2222 break;
2223 case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
2224 ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
2225 break;
2226 case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
2227 ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen);
2228 break;
2229 case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
2230 ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen);
2231 break;
2232 case I40E_VIRTCHNL_OP_ADD_VLAN:
2233 ret = i40e_vc_add_vlan_msg(vf, msg, msglen);
2234 break;
2235 case I40E_VIRTCHNL_OP_DEL_VLAN:
2236 ret = i40e_vc_remove_vlan_msg(vf, msg, msglen);
2237 break;
2238 case I40E_VIRTCHNL_OP_GET_STATS:
2239 ret = i40e_vc_get_stats_msg(vf, msg, msglen);
2240 break;
2241 case I40E_VIRTCHNL_OP_IWARP:
2242 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
2243 break;
2244 case I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
2245 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, true);
2246 break;
2247 case I40E_VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
2248 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, false);
2249 break;
2250 case I40E_VIRTCHNL_OP_UNKNOWN:
2251 default:
2252 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
2253 v_opcode, local_vf_id);
2254 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
2255 I40E_ERR_NOT_IMPLEMENTED);
2256 break;
2257 }
2258
2259 return ret;
2260}
2261
2262/**
2263 * i40e_vc_process_vflr_event
2264 * @pf: pointer to the PF structure
2265 *
2266 * called from the vlfr irq handler to
2267 * free up VF resources and state variables
2268 **/
2269int i40e_vc_process_vflr_event(struct i40e_pf *pf)
2270{
2271 u32 reg, reg_idx, bit_idx, vf_id;
2272 struct i40e_hw *hw = &pf->hw;
2273 struct i40e_vf *vf;
2274
2275 if (!test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
2276 return 0;
2277
2278 /* Re-enable the VFLR interrupt cause here, before looking for which
2279 * VF got reset. Otherwise, if another VF gets a reset while the
2280 * first one is being processed, that interrupt will be lost, and
2281 * that VF will be stuck in reset forever.
2282 */
2283 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
2284 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
2285 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
2286 i40e_flush(hw);
2287
2288 clear_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2289 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
2290 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
2291 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
2292 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
2293 vf = &pf->vf[vf_id];
2294 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
2295 if (reg & BIT(bit_idx)) {
2296 /* clear the bit in GLGEN_VFLRSTAT */
2297 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
2298
2299 if (!test_bit(__I40E_DOWN, &pf->state))
2300 i40e_reset_vf(vf, true);
2301 }
2302 }
2303
2304 return 0;
2305}
2306
2307/**
2308 * i40e_ndo_set_vf_mac
2309 * @netdev: network interface device structure
2310 * @vf_id: VF identifier
2311 * @mac: mac address
2312 *
2313 * program VF mac address
2314 **/
2315int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
2316{
2317 struct i40e_netdev_priv *np = netdev_priv(netdev);
2318 struct i40e_vsi *vsi = np->vsi;
2319 struct i40e_pf *pf = vsi->back;
2320 struct i40e_mac_filter *f;
2321 struct i40e_vf *vf;
2322 int ret = 0;
2323
2324 /* validate the request */
2325 if (vf_id >= pf->num_alloc_vfs) {
2326 dev_err(&pf->pdev->dev,
2327 "Invalid VF Identifier %d\n", vf_id);
2328 ret = -EINVAL;
2329 goto error_param;
2330 }
2331
2332 vf = &(pf->vf[vf_id]);
2333 vsi = pf->vsi[vf->lan_vsi_idx];
2334 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2335 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2336 vf_id);
2337 ret = -EAGAIN;
2338 goto error_param;
2339 }
2340
2341 if (is_multicast_ether_addr(mac)) {
2342 dev_err(&pf->pdev->dev,
2343 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
2344 ret = -EINVAL;
2345 goto error_param;
2346 }
2347
2348 /* Lock once because below invoked function add/del_filter requires
2349 * mac_filter_list_lock to be held
2350 */
2351 spin_lock_bh(&vsi->mac_filter_list_lock);
2352
2353 /* delete the temporary mac address */
2354 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
2355 i40e_del_filter(vsi, vf->default_lan_addr.addr,
2356 vf->port_vlan_id ? vf->port_vlan_id : -1,
2357 true, false);
2358
2359 /* Delete all the filters for this VSI - we're going to kill it
2360 * anyway.
2361 */
2362 list_for_each_entry(f, &vsi->mac_filter_list, list)
2363 i40e_del_filter(vsi, f->macaddr, f->vlan, true, false);
2364
2365 spin_unlock_bh(&vsi->mac_filter_list_lock);
2366
2367 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", mac, vf_id);
2368 /* program mac filter */
2369 if (i40e_sync_vsi_filters(vsi)) {
2370 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
2371 ret = -EIO;
2372 goto error_param;
2373 }
2374 ether_addr_copy(vf->default_lan_addr.addr, mac);
2375 vf->pf_set_mac = true;
2376 /* Force the VF driver stop so it has to reload with new MAC address */
2377 i40e_vc_disable_vf(pf, vf);
2378 dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");
2379
2380error_param:
2381 return ret;
2382}
2383
2384/**
2385 * i40e_ndo_set_vf_port_vlan
2386 * @netdev: network interface device structure
2387 * @vf_id: VF identifier
2388 * @vlan_id: mac address
2389 * @qos: priority setting
2390 *
2391 * program VF vlan id and/or qos
2392 **/
2393int i40e_ndo_set_vf_port_vlan(struct net_device *netdev,
2394 int vf_id, u16 vlan_id, u8 qos)
2395{
2396 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
2397 struct i40e_netdev_priv *np = netdev_priv(netdev);
2398 struct i40e_pf *pf = np->vsi->back;
2399 bool is_vsi_in_vlan = false;
2400 struct i40e_vsi *vsi;
2401 struct i40e_vf *vf;
2402 int ret = 0;
2403
2404 /* validate the request */
2405 if (vf_id >= pf->num_alloc_vfs) {
2406 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2407 ret = -EINVAL;
2408 goto error_pvid;
2409 }
2410
2411 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
2412 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
2413 ret = -EINVAL;
2414 goto error_pvid;
2415 }
2416
2417 vf = &(pf->vf[vf_id]);
2418 vsi = pf->vsi[vf->lan_vsi_idx];
2419 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2420 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2421 vf_id);
2422 ret = -EAGAIN;
2423 goto error_pvid;
2424 }
2425
2426 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
2427 /* duplicate request, so just return success */
2428 goto error_pvid;
2429
2430 spin_lock_bh(&vsi->mac_filter_list_lock);
2431 is_vsi_in_vlan = i40e_is_vsi_in_vlan(vsi);
2432 spin_unlock_bh(&vsi->mac_filter_list_lock);
2433
2434 if (le16_to_cpu(vsi->info.pvid) == 0 && is_vsi_in_vlan) {
2435 dev_err(&pf->pdev->dev,
2436 "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",
2437 vf_id);
2438 /* Administrator Error - knock the VF offline until he does
2439 * the right thing by reconfiguring his network correctly
2440 * and then reloading the VF driver.
2441 */
2442 i40e_vc_disable_vf(pf, vf);
2443 /* During reset the VF got a new VSI, so refresh the pointer. */
2444 vsi = pf->vsi[vf->lan_vsi_idx];
2445 }
2446
2447 /* Check for condition where there was already a port VLAN ID
2448 * filter set and now it is being deleted by setting it to zero.
2449 * Additionally check for the condition where there was a port
2450 * VLAN but now there is a new and different port VLAN being set.
2451 * Before deleting all the old VLAN filters we must add new ones
2452 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
2453 * MAC addresses deleted.
2454 */
2455 if ((!(vlan_id || qos) ||
2456 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
2457 vsi->info.pvid)
2458 ret = i40e_vsi_add_vlan(vsi, I40E_VLAN_ANY);
2459
2460 if (vsi->info.pvid) {
2461 /* kill old VLAN */
2462 ret = i40e_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) &
2463 VLAN_VID_MASK));
2464 if (ret) {
2465 dev_info(&vsi->back->pdev->dev,
2466 "remove VLAN failed, ret=%d, aq_err=%d\n",
2467 ret, pf->hw.aq.asq_last_status);
2468 }
2469 }
2470 if (vlan_id || qos)
2471 ret = i40e_vsi_add_pvid(vsi, vlanprio);
2472 else
2473 i40e_vsi_remove_pvid(vsi);
2474
2475 if (vlan_id) {
2476 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
2477 vlan_id, qos, vf_id);
2478
2479 /* add new VLAN filter */
2480 ret = i40e_vsi_add_vlan(vsi, vlan_id);
2481 if (ret) {
2482 dev_info(&vsi->back->pdev->dev,
2483 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
2484 vsi->back->hw.aq.asq_last_status);
2485 goto error_pvid;
2486 }
2487 /* Kill non-vlan MAC filters - ignore error return since
2488 * there might not be any non-vlan MAC filters.
2489 */
2490 i40e_vsi_kill_vlan(vsi, I40E_VLAN_ANY);
2491 }
2492
2493 if (ret) {
2494 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
2495 goto error_pvid;
2496 }
2497 /* The Port VLAN needs to be saved across resets the same as the
2498 * default LAN MAC address.
2499 */
2500 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
2501 ret = 0;
2502
2503error_pvid:
2504 return ret;
2505}
2506
2507#define I40E_BW_CREDIT_DIVISOR 50 /* 50Mbps per BW credit */
2508#define I40E_MAX_BW_INACTIVE_ACCUM 4 /* device can accumulate 4 credits max */
2509/**
2510 * i40e_ndo_set_vf_bw
2511 * @netdev: network interface device structure
2512 * @vf_id: VF identifier
2513 * @tx_rate: Tx rate
2514 *
2515 * configure VF Tx rate
2516 **/
2517int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
2518 int max_tx_rate)
2519{
2520 struct i40e_netdev_priv *np = netdev_priv(netdev);
2521 struct i40e_pf *pf = np->vsi->back;
2522 struct i40e_vsi *vsi;
2523 struct i40e_vf *vf;
2524 int speed = 0;
2525 int ret = 0;
2526
2527 /* validate the request */
2528 if (vf_id >= pf->num_alloc_vfs) {
2529 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d.\n", vf_id);
2530 ret = -EINVAL;
2531 goto error;
2532 }
2533
2534 if (min_tx_rate) {
2535 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
2536 min_tx_rate, vf_id);
2537 return -EINVAL;
2538 }
2539
2540 vf = &(pf->vf[vf_id]);
2541 vsi = pf->vsi[vf->lan_vsi_idx];
2542 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2543 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2544 vf_id);
2545 ret = -EAGAIN;
2546 goto error;
2547 }
2548
2549 switch (pf->hw.phy.link_info.link_speed) {
2550 case I40E_LINK_SPEED_40GB:
2551 speed = 40000;
2552 break;
2553 case I40E_LINK_SPEED_20GB:
2554 speed = 20000;
2555 break;
2556 case I40E_LINK_SPEED_10GB:
2557 speed = 10000;
2558 break;
2559 case I40E_LINK_SPEED_1GB:
2560 speed = 1000;
2561 break;
2562 default:
2563 break;
2564 }
2565
2566 if (max_tx_rate > speed) {
2567 dev_err(&pf->pdev->dev, "Invalid max tx rate %d specified for VF %d.",
2568 max_tx_rate, vf->vf_id);
2569 ret = -EINVAL;
2570 goto error;
2571 }
2572
2573 if ((max_tx_rate < 50) && (max_tx_rate > 0)) {
2574 dev_warn(&pf->pdev->dev, "Setting max Tx rate to minimum usable value of 50Mbps.\n");
2575 max_tx_rate = 50;
2576 }
2577
2578 /* Tx rate credits are in values of 50Mbps, 0 is disabled*/
2579 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
2580 max_tx_rate / I40E_BW_CREDIT_DIVISOR,
2581 I40E_MAX_BW_INACTIVE_ACCUM, NULL);
2582 if (ret) {
2583 dev_err(&pf->pdev->dev, "Unable to set max tx rate, error code %d.\n",
2584 ret);
2585 ret = -EIO;
2586 goto error;
2587 }
2588 vf->tx_rate = max_tx_rate;
2589error:
2590 return ret;
2591}
2592
2593/**
2594 * i40e_ndo_get_vf_config
2595 * @netdev: network interface device structure
2596 * @vf_id: VF identifier
2597 * @ivi: VF configuration structure
2598 *
2599 * return VF configuration
2600 **/
2601int i40e_ndo_get_vf_config(struct net_device *netdev,
2602 int vf_id, struct ifla_vf_info *ivi)
2603{
2604 struct i40e_netdev_priv *np = netdev_priv(netdev);
2605 struct i40e_vsi *vsi = np->vsi;
2606 struct i40e_pf *pf = vsi->back;
2607 struct i40e_vf *vf;
2608 int ret = 0;
2609
2610 /* validate the request */
2611 if (vf_id >= pf->num_alloc_vfs) {
2612 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2613 ret = -EINVAL;
2614 goto error_param;
2615 }
2616
2617 vf = &(pf->vf[vf_id]);
2618 /* first vsi is always the LAN vsi */
2619 vsi = pf->vsi[vf->lan_vsi_idx];
2620 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2621 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2622 vf_id);
2623 ret = -EAGAIN;
2624 goto error_param;
2625 }
2626
2627 ivi->vf = vf_id;
2628
2629 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
2630
2631 ivi->max_tx_rate = vf->tx_rate;
2632 ivi->min_tx_rate = 0;
2633 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
2634 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
2635 I40E_VLAN_PRIORITY_SHIFT;
2636 if (vf->link_forced == false)
2637 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
2638 else if (vf->link_up == true)
2639 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
2640 else
2641 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
2642 ivi->spoofchk = vf->spoofchk;
2643 ret = 0;
2644
2645error_param:
2646 return ret;
2647}
2648
2649/**
2650 * i40e_ndo_set_vf_link_state
2651 * @netdev: network interface device structure
2652 * @vf_id: VF identifier
2653 * @link: required link state
2654 *
2655 * Set the link state of a specified VF, regardless of physical link state
2656 **/
2657int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
2658{
2659 struct i40e_netdev_priv *np = netdev_priv(netdev);
2660 struct i40e_pf *pf = np->vsi->back;
2661 struct i40e_virtchnl_pf_event pfe;
2662 struct i40e_hw *hw = &pf->hw;
2663 struct i40e_vf *vf;
2664 int abs_vf_id;
2665 int ret = 0;
2666
2667 /* validate the request */
2668 if (vf_id >= pf->num_alloc_vfs) {
2669 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2670 ret = -EINVAL;
2671 goto error_out;
2672 }
2673
2674 vf = &pf->vf[vf_id];
2675 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
2676
2677 pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
2678 pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
2679
2680 switch (link) {
2681 case IFLA_VF_LINK_STATE_AUTO:
2682 vf->link_forced = false;
2683 pfe.event_data.link_event.link_status =
2684 pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
2685 pfe.event_data.link_event.link_speed =
2686 pf->hw.phy.link_info.link_speed;
2687 break;
2688 case IFLA_VF_LINK_STATE_ENABLE:
2689 vf->link_forced = true;
2690 vf->link_up = true;
2691 pfe.event_data.link_event.link_status = true;
2692 pfe.event_data.link_event.link_speed = I40E_LINK_SPEED_40GB;
2693 break;
2694 case IFLA_VF_LINK_STATE_DISABLE:
2695 vf->link_forced = true;
2696 vf->link_up = false;
2697 pfe.event_data.link_event.link_status = false;
2698 pfe.event_data.link_event.link_speed = 0;
2699 break;
2700 default:
2701 ret = -EINVAL;
2702 goto error_out;
2703 }
2704 /* Notify the VF of its new link state */
2705 i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
2706 0, (u8 *)&pfe, sizeof(pfe), NULL);
2707
2708error_out:
2709 return ret;
2710}
2711
2712/**
2713 * i40e_ndo_set_vf_spoofchk
2714 * @netdev: network interface device structure
2715 * @vf_id: VF identifier
2716 * @enable: flag to enable or disable feature
2717 *
2718 * Enable or disable VF spoof checking
2719 **/
2720int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
2721{
2722 struct i40e_netdev_priv *np = netdev_priv(netdev);
2723 struct i40e_vsi *vsi = np->vsi;
2724 struct i40e_pf *pf = vsi->back;
2725 struct i40e_vsi_context ctxt;
2726 struct i40e_hw *hw = &pf->hw;
2727 struct i40e_vf *vf;
2728 int ret = 0;
2729
2730 /* validate the request */
2731 if (vf_id >= pf->num_alloc_vfs) {
2732 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2733 ret = -EINVAL;
2734 goto out;
2735 }
2736
2737 vf = &(pf->vf[vf_id]);
2738 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2739 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2740 vf_id);
2741 ret = -EAGAIN;
2742 goto out;
2743 }
2744
2745 if (enable == vf->spoofchk)
2746 goto out;
2747
2748 vf->spoofchk = enable;
2749 memset(&ctxt, 0, sizeof(ctxt));
2750 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
2751 ctxt.pf_num = pf->hw.pf_id;
2752 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
2753 if (enable)
2754 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
2755 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
2756 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
2757 if (ret) {
2758 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
2759 ret);
2760 ret = -EIO;
2761 }
2762out:
2763 return ret;
2764}
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4#include "i40e.h"
5
6/*********************notification routines***********************/
7
8/**
9 * i40e_vc_vf_broadcast
10 * @pf: pointer to the PF structure
11 * @v_opcode: operation code
12 * @v_retval: return value
13 * @msg: pointer to the msg buffer
14 * @msglen: msg length
15 *
16 * send a message to all VFs on a given PF
17 **/
18static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
19 enum virtchnl_ops v_opcode,
20 i40e_status v_retval, u8 *msg,
21 u16 msglen)
22{
23 struct i40e_hw *hw = &pf->hw;
24 struct i40e_vf *vf = pf->vf;
25 int i;
26
27 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
28 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
29 /* Not all vfs are enabled so skip the ones that are not */
30 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
31 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
32 continue;
33
34 /* Ignore return value on purpose - a given VF may fail, but
35 * we need to keep going and send to all of them
36 */
37 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
38 msg, msglen, NULL);
39 }
40}
41
42/**
43 * i40e_vc_notify_vf_link_state
44 * @vf: pointer to the VF structure
45 *
46 * send a link status message to a single VF
47 **/
48static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
49{
50 struct virtchnl_pf_event pfe;
51 struct i40e_pf *pf = vf->pf;
52 struct i40e_hw *hw = &pf->hw;
53 struct i40e_link_status *ls = &pf->hw.phy.link_info;
54 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
55
56 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
57 pfe.severity = PF_EVENT_SEVERITY_INFO;
58
59 /* Always report link is down if the VF queues aren't enabled */
60 if (!vf->queues_enabled) {
61 pfe.event_data.link_event.link_status = false;
62 pfe.event_data.link_event.link_speed = 0;
63 } else if (vf->link_forced) {
64 pfe.event_data.link_event.link_status = vf->link_up;
65 pfe.event_data.link_event.link_speed =
66 (vf->link_up ? VIRTCHNL_LINK_SPEED_40GB : 0);
67 } else {
68 pfe.event_data.link_event.link_status =
69 ls->link_info & I40E_AQ_LINK_UP;
70 pfe.event_data.link_event.link_speed =
71 i40e_virtchnl_link_speed(ls->link_speed);
72 }
73
74 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
75 0, (u8 *)&pfe, sizeof(pfe), NULL);
76}
77
78/**
79 * i40e_vc_notify_link_state
80 * @pf: pointer to the PF structure
81 *
82 * send a link status message to all VFs on a given PF
83 **/
84void i40e_vc_notify_link_state(struct i40e_pf *pf)
85{
86 int i;
87
88 for (i = 0; i < pf->num_alloc_vfs; i++)
89 i40e_vc_notify_vf_link_state(&pf->vf[i]);
90}
91
92/**
93 * i40e_vc_notify_reset
94 * @pf: pointer to the PF structure
95 *
96 * indicate a pending reset to all VFs on a given PF
97 **/
98void i40e_vc_notify_reset(struct i40e_pf *pf)
99{
100 struct virtchnl_pf_event pfe;
101
102 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
103 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
104 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
105 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
106}
107
108/**
109 * i40e_vc_notify_vf_reset
110 * @vf: pointer to the VF structure
111 *
112 * indicate a pending reset to the given VF
113 **/
114void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
115{
116 struct virtchnl_pf_event pfe;
117 int abs_vf_id;
118
119 /* validate the request */
120 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
121 return;
122
123 /* verify if the VF is in either init or active before proceeding */
124 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
125 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
126 return;
127
128 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
129
130 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
131 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
132 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
133 0, (u8 *)&pfe,
134 sizeof(struct virtchnl_pf_event), NULL);
135}
136/***********************misc routines*****************************/
137
138/**
139 * i40e_vc_disable_vf
140 * @vf: pointer to the VF info
141 *
142 * Disable the VF through a SW reset.
143 **/
144static inline void i40e_vc_disable_vf(struct i40e_vf *vf)
145{
146 int i;
147
148 i40e_vc_notify_vf_reset(vf);
149
150 /* We want to ensure that an actual reset occurs initiated after this
151 * function was called. However, we do not want to wait forever, so
152 * we'll give a reasonable time and print a message if we failed to
153 * ensure a reset.
154 */
155 for (i = 0; i < 20; i++) {
156 if (i40e_reset_vf(vf, false))
157 return;
158 usleep_range(10000, 20000);
159 }
160
161 dev_warn(&vf->pf->pdev->dev,
162 "Failed to initiate reset for VF %d after 200 milliseconds\n",
163 vf->vf_id);
164}
165
166/**
167 * i40e_vc_isvalid_vsi_id
168 * @vf: pointer to the VF info
169 * @vsi_id: VF relative VSI id
170 *
171 * check for the valid VSI id
172 **/
173static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
174{
175 struct i40e_pf *pf = vf->pf;
176 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
177
178 return (vsi && (vsi->vf_id == vf->vf_id));
179}
180
181/**
182 * i40e_vc_isvalid_queue_id
183 * @vf: pointer to the VF info
184 * @vsi_id: vsi id
185 * @qid: vsi relative queue id
186 *
187 * check for the valid queue id
188 **/
189static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
190 u16 qid)
191{
192 struct i40e_pf *pf = vf->pf;
193 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
194
195 return (vsi && (qid < vsi->alloc_queue_pairs));
196}
197
198/**
199 * i40e_vc_isvalid_vector_id
200 * @vf: pointer to the VF info
201 * @vector_id: VF relative vector id
202 *
203 * check for the valid vector id
204 **/
205static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
206{
207 struct i40e_pf *pf = vf->pf;
208
209 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
210}
211
212/***********************vf resource mgmt routines*****************/
213
214/**
215 * i40e_vc_get_pf_queue_id
216 * @vf: pointer to the VF info
217 * @vsi_id: id of VSI as provided by the FW
218 * @vsi_queue_id: vsi relative queue id
219 *
220 * return PF relative queue id
221 **/
222static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
223 u8 vsi_queue_id)
224{
225 struct i40e_pf *pf = vf->pf;
226 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
227 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
228
229 if (!vsi)
230 return pf_queue_id;
231
232 if (le16_to_cpu(vsi->info.mapping_flags) &
233 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
234 pf_queue_id =
235 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
236 else
237 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
238 vsi_queue_id;
239
240 return pf_queue_id;
241}
242
243/**
244 * i40e_get_real_pf_qid
245 * @vf: pointer to the VF info
246 * @vsi_id: vsi id
247 * @queue_id: queue number
248 *
249 * wrapper function to get pf_queue_id handling ADq code as well
250 **/
251static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
252{
253 int i;
254
255 if (vf->adq_enabled) {
256 /* Although VF considers all the queues(can be 1 to 16) as its
257 * own but they may actually belong to different VSIs(up to 4).
258 * We need to find which queues belongs to which VSI.
259 */
260 for (i = 0; i < vf->num_tc; i++) {
261 if (queue_id < vf->ch[i].num_qps) {
262 vsi_id = vf->ch[i].vsi_id;
263 break;
264 }
265 /* find right queue id which is relative to a
266 * given VSI.
267 */
268 queue_id -= vf->ch[i].num_qps;
269 }
270 }
271
272 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
273}
274
275/**
276 * i40e_config_irq_link_list
277 * @vf: pointer to the VF info
278 * @vsi_id: id of VSI as given by the FW
279 * @vecmap: irq map info
280 *
281 * configure irq link list from the map
282 **/
283static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
284 struct virtchnl_vector_map *vecmap)
285{
286 unsigned long linklistmap = 0, tempmap;
287 struct i40e_pf *pf = vf->pf;
288 struct i40e_hw *hw = &pf->hw;
289 u16 vsi_queue_id, pf_queue_id;
290 enum i40e_queue_type qtype;
291 u16 next_q, vector_id, size;
292 u32 reg, reg_idx;
293 u16 itr_idx = 0;
294
295 vector_id = vecmap->vector_id;
296 /* setup the head */
297 if (0 == vector_id)
298 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
299 else
300 reg_idx = I40E_VPINT_LNKLSTN(
301 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
302 (vector_id - 1));
303
304 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
305 /* Special case - No queues mapped on this vector */
306 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
307 goto irq_list_done;
308 }
309 tempmap = vecmap->rxq_map;
310 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
311 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
312 vsi_queue_id));
313 }
314
315 tempmap = vecmap->txq_map;
316 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
317 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
318 vsi_queue_id + 1));
319 }
320
321 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
322 next_q = find_first_bit(&linklistmap, size);
323 if (unlikely(next_q == size))
324 goto irq_list_done;
325
326 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
327 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
328 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
329 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
330
331 wr32(hw, reg_idx, reg);
332
333 while (next_q < size) {
334 switch (qtype) {
335 case I40E_QUEUE_TYPE_RX:
336 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
337 itr_idx = vecmap->rxitr_idx;
338 break;
339 case I40E_QUEUE_TYPE_TX:
340 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
341 itr_idx = vecmap->txitr_idx;
342 break;
343 default:
344 break;
345 }
346
347 next_q = find_next_bit(&linklistmap, size, next_q + 1);
348 if (next_q < size) {
349 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
350 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
351 pf_queue_id = i40e_get_real_pf_qid(vf,
352 vsi_id,
353 vsi_queue_id);
354 } else {
355 pf_queue_id = I40E_QUEUE_END_OF_LIST;
356 qtype = 0;
357 }
358
359 /* format for the RQCTL & TQCTL regs is same */
360 reg = (vector_id) |
361 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
362 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
363 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
364 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
365 wr32(hw, reg_idx, reg);
366 }
367
368 /* if the vf is running in polling mode and using interrupt zero,
369 * need to disable auto-mask on enabling zero interrupt for VFs.
370 */
371 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
372 (vector_id == 0)) {
373 reg = rd32(hw, I40E_GLINT_CTL);
374 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
375 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
376 wr32(hw, I40E_GLINT_CTL, reg);
377 }
378 }
379
380irq_list_done:
381 i40e_flush(hw);
382}
383
384/**
385 * i40e_release_iwarp_qvlist
386 * @vf: pointer to the VF.
387 *
388 **/
389static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
390{
391 struct i40e_pf *pf = vf->pf;
392 struct virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
393 u32 msix_vf;
394 u32 i;
395
396 if (!vf->qvlist_info)
397 return;
398
399 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
400 for (i = 0; i < qvlist_info->num_vectors; i++) {
401 struct virtchnl_iwarp_qv_info *qv_info;
402 u32 next_q_index, next_q_type;
403 struct i40e_hw *hw = &pf->hw;
404 u32 v_idx, reg_idx, reg;
405
406 qv_info = &qvlist_info->qv_info[i];
407 if (!qv_info)
408 continue;
409 v_idx = qv_info->v_idx;
410 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
411 /* Figure out the queue after CEQ and make that the
412 * first queue.
413 */
414 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
415 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
416 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
417 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
418 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
419 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
420
421 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
422 reg = (next_q_index &
423 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
424 (next_q_type <<
425 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
426
427 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
428 }
429 }
430 kfree(vf->qvlist_info);
431 vf->qvlist_info = NULL;
432}
433
434/**
435 * i40e_config_iwarp_qvlist
436 * @vf: pointer to the VF info
437 * @qvlist_info: queue and vector list
438 *
439 * Return 0 on success or < 0 on error
440 **/
441static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
442 struct virtchnl_iwarp_qvlist_info *qvlist_info)
443{
444 struct i40e_pf *pf = vf->pf;
445 struct i40e_hw *hw = &pf->hw;
446 struct virtchnl_iwarp_qv_info *qv_info;
447 u32 v_idx, i, reg_idx, reg;
448 u32 next_q_idx, next_q_type;
449 u32 msix_vf;
450 int ret = 0;
451
452 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
453
454 if (qvlist_info->num_vectors > msix_vf) {
455 dev_warn(&pf->pdev->dev,
456 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
457 qvlist_info->num_vectors,
458 msix_vf);
459 ret = -EINVAL;
460 goto err_out;
461 }
462
463 kfree(vf->qvlist_info);
464 vf->qvlist_info = kzalloc(struct_size(vf->qvlist_info, qv_info,
465 qvlist_info->num_vectors - 1),
466 GFP_KERNEL);
467 if (!vf->qvlist_info) {
468 ret = -ENOMEM;
469 goto err_out;
470 }
471 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
472
473 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
474 for (i = 0; i < qvlist_info->num_vectors; i++) {
475 qv_info = &qvlist_info->qv_info[i];
476 if (!qv_info)
477 continue;
478
479 /* Validate vector id belongs to this vf */
480 if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) {
481 ret = -EINVAL;
482 goto err_free;
483 }
484
485 v_idx = qv_info->v_idx;
486
487 vf->qvlist_info->qv_info[i] = *qv_info;
488
489 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
490 /* We might be sharing the interrupt, so get the first queue
491 * index and type, push it down the list by adding the new
492 * queue on top. Also link it with the new queue in CEQCTL.
493 */
494 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
495 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
496 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
497 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
498 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
499
500 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
501 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
502 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
503 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
504 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
505 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
506 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
507 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
508
509 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
510 reg = (qv_info->ceq_idx &
511 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
512 (I40E_QUEUE_TYPE_PE_CEQ <<
513 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
514 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
515 }
516
517 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
518 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
519 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
520 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
521
522 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
523 }
524 }
525
526 return 0;
527err_free:
528 kfree(vf->qvlist_info);
529 vf->qvlist_info = NULL;
530err_out:
531 return ret;
532}
533
534/**
535 * i40e_config_vsi_tx_queue
536 * @vf: pointer to the VF info
537 * @vsi_id: id of VSI as provided by the FW
538 * @vsi_queue_id: vsi relative queue index
539 * @info: config. info
540 *
541 * configure tx queue
542 **/
543static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
544 u16 vsi_queue_id,
545 struct virtchnl_txq_info *info)
546{
547 struct i40e_pf *pf = vf->pf;
548 struct i40e_hw *hw = &pf->hw;
549 struct i40e_hmc_obj_txq tx_ctx;
550 struct i40e_vsi *vsi;
551 u16 pf_queue_id;
552 u32 qtx_ctl;
553 int ret = 0;
554
555 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
556 ret = -ENOENT;
557 goto error_context;
558 }
559 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
560 vsi = i40e_find_vsi_from_id(pf, vsi_id);
561 if (!vsi) {
562 ret = -ENOENT;
563 goto error_context;
564 }
565
566 /* clear the context structure first */
567 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
568
569 /* only set the required fields */
570 tx_ctx.base = info->dma_ring_addr / 128;
571 tx_ctx.qlen = info->ring_len;
572 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
573 tx_ctx.rdylist_act = 0;
574 tx_ctx.head_wb_ena = info->headwb_enabled;
575 tx_ctx.head_wb_addr = info->dma_headwb_addr;
576
577 /* clear the context in the HMC */
578 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
579 if (ret) {
580 dev_err(&pf->pdev->dev,
581 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
582 pf_queue_id, ret);
583 ret = -ENOENT;
584 goto error_context;
585 }
586
587 /* set the context in the HMC */
588 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
589 if (ret) {
590 dev_err(&pf->pdev->dev,
591 "Failed to set VF LAN Tx queue context %d error: %d\n",
592 pf_queue_id, ret);
593 ret = -ENOENT;
594 goto error_context;
595 }
596
597 /* associate this queue with the PCI VF function */
598 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
599 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
600 & I40E_QTX_CTL_PF_INDX_MASK);
601 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
602 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
603 & I40E_QTX_CTL_VFVM_INDX_MASK);
604 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
605 i40e_flush(hw);
606
607error_context:
608 return ret;
609}
610
611/**
612 * i40e_config_vsi_rx_queue
613 * @vf: pointer to the VF info
614 * @vsi_id: id of VSI as provided by the FW
615 * @vsi_queue_id: vsi relative queue index
616 * @info: config. info
617 *
618 * configure rx queue
619 **/
620static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
621 u16 vsi_queue_id,
622 struct virtchnl_rxq_info *info)
623{
624 struct i40e_pf *pf = vf->pf;
625 struct i40e_hw *hw = &pf->hw;
626 struct i40e_hmc_obj_rxq rx_ctx;
627 u16 pf_queue_id;
628 int ret = 0;
629
630 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
631
632 /* clear the context structure first */
633 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
634
635 /* only set the required fields */
636 rx_ctx.base = info->dma_ring_addr / 128;
637 rx_ctx.qlen = info->ring_len;
638
639 if (info->splithdr_enabled) {
640 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
641 I40E_RX_SPLIT_IP |
642 I40E_RX_SPLIT_TCP_UDP |
643 I40E_RX_SPLIT_SCTP;
644 /* header length validation */
645 if (info->hdr_size > ((2 * 1024) - 64)) {
646 ret = -EINVAL;
647 goto error_param;
648 }
649 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
650
651 /* set split mode 10b */
652 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
653 }
654
655 /* databuffer length validation */
656 if (info->databuffer_size > ((16 * 1024) - 128)) {
657 ret = -EINVAL;
658 goto error_param;
659 }
660 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
661
662 /* max pkt. length validation */
663 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
664 ret = -EINVAL;
665 goto error_param;
666 }
667 rx_ctx.rxmax = info->max_pkt_size;
668
669 /* enable 32bytes desc always */
670 rx_ctx.dsize = 1;
671
672 /* default values */
673 rx_ctx.lrxqthresh = 1;
674 rx_ctx.crcstrip = 1;
675 rx_ctx.prefena = 1;
676 rx_ctx.l2tsel = 1;
677
678 /* clear the context in the HMC */
679 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
680 if (ret) {
681 dev_err(&pf->pdev->dev,
682 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
683 pf_queue_id, ret);
684 ret = -ENOENT;
685 goto error_param;
686 }
687
688 /* set the context in the HMC */
689 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
690 if (ret) {
691 dev_err(&pf->pdev->dev,
692 "Failed to set VF LAN Rx queue context %d error: %d\n",
693 pf_queue_id, ret);
694 ret = -ENOENT;
695 goto error_param;
696 }
697
698error_param:
699 return ret;
700}
701
702/**
703 * i40e_alloc_vsi_res
704 * @vf: pointer to the VF info
705 * @idx: VSI index, applies only for ADq mode, zero otherwise
706 *
707 * alloc VF vsi context & resources
708 **/
709static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
710{
711 struct i40e_mac_filter *f = NULL;
712 struct i40e_pf *pf = vf->pf;
713 struct i40e_vsi *vsi;
714 u64 max_tx_rate = 0;
715 int ret = 0;
716
717 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid,
718 vf->vf_id);
719
720 if (!vsi) {
721 dev_err(&pf->pdev->dev,
722 "add vsi failed for VF %d, aq_err %d\n",
723 vf->vf_id, pf->hw.aq.asq_last_status);
724 ret = -ENOENT;
725 goto error_alloc_vsi_res;
726 }
727
728 if (!idx) {
729 u64 hena = i40e_pf_get_default_rss_hena(pf);
730 u8 broadcast[ETH_ALEN];
731
732 vf->lan_vsi_idx = vsi->idx;
733 vf->lan_vsi_id = vsi->id;
734 /* If the port VLAN has been configured and then the
735 * VF driver was removed then the VSI port VLAN
736 * configuration was destroyed. Check if there is
737 * a port VLAN and restore the VSI configuration if
738 * needed.
739 */
740 if (vf->port_vlan_id)
741 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
742
743 spin_lock_bh(&vsi->mac_filter_hash_lock);
744 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
745 f = i40e_add_mac_filter(vsi,
746 vf->default_lan_addr.addr);
747 if (!f)
748 dev_info(&pf->pdev->dev,
749 "Could not add MAC filter %pM for VF %d\n",
750 vf->default_lan_addr.addr, vf->vf_id);
751 }
752 eth_broadcast_addr(broadcast);
753 f = i40e_add_mac_filter(vsi, broadcast);
754 if (!f)
755 dev_info(&pf->pdev->dev,
756 "Could not allocate VF broadcast filter\n");
757 spin_unlock_bh(&vsi->mac_filter_hash_lock);
758 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
759 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
760 /* program mac filter only for VF VSI */
761 ret = i40e_sync_vsi_filters(vsi);
762 if (ret)
763 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
764 }
765
766 /* storing VSI index and id for ADq and don't apply the mac filter */
767 if (vf->adq_enabled) {
768 vf->ch[idx].vsi_idx = vsi->idx;
769 vf->ch[idx].vsi_id = vsi->id;
770 }
771
772 /* Set VF bandwidth if specified */
773 if (vf->tx_rate) {
774 max_tx_rate = vf->tx_rate;
775 } else if (vf->ch[idx].max_tx_rate) {
776 max_tx_rate = vf->ch[idx].max_tx_rate;
777 }
778
779 if (max_tx_rate) {
780 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
781 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
782 max_tx_rate, 0, NULL);
783 if (ret)
784 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
785 vf->vf_id, ret);
786 }
787
788error_alloc_vsi_res:
789 return ret;
790}
791
792/**
793 * i40e_map_pf_queues_to_vsi
794 * @vf: pointer to the VF info
795 *
796 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
797 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
798 **/
799static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
800{
801 struct i40e_pf *pf = vf->pf;
802 struct i40e_hw *hw = &pf->hw;
803 u32 reg, num_tc = 1; /* VF has at least one traffic class */
804 u16 vsi_id, qps;
805 int i, j;
806
807 if (vf->adq_enabled)
808 num_tc = vf->num_tc;
809
810 for (i = 0; i < num_tc; i++) {
811 if (vf->adq_enabled) {
812 qps = vf->ch[i].num_qps;
813 vsi_id = vf->ch[i].vsi_id;
814 } else {
815 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
816 vsi_id = vf->lan_vsi_id;
817 }
818
819 for (j = 0; j < 7; j++) {
820 if (j * 2 >= qps) {
821 /* end of list */
822 reg = 0x07FF07FF;
823 } else {
824 u16 qid = i40e_vc_get_pf_queue_id(vf,
825 vsi_id,
826 j * 2);
827 reg = qid;
828 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
829 (j * 2) + 1);
830 reg |= qid << 16;
831 }
832 i40e_write_rx_ctl(hw,
833 I40E_VSILAN_QTABLE(j, vsi_id),
834 reg);
835 }
836 }
837}
838
839/**
840 * i40e_map_pf_to_vf_queues
841 * @vf: pointer to the VF info
842 *
843 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
844 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
845 **/
846static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
847{
848 struct i40e_pf *pf = vf->pf;
849 struct i40e_hw *hw = &pf->hw;
850 u32 reg, total_qps = 0;
851 u32 qps, num_tc = 1; /* VF has at least one traffic class */
852 u16 vsi_id, qid;
853 int i, j;
854
855 if (vf->adq_enabled)
856 num_tc = vf->num_tc;
857
858 for (i = 0; i < num_tc; i++) {
859 if (vf->adq_enabled) {
860 qps = vf->ch[i].num_qps;
861 vsi_id = vf->ch[i].vsi_id;
862 } else {
863 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
864 vsi_id = vf->lan_vsi_id;
865 }
866
867 for (j = 0; j < qps; j++) {
868 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
869
870 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
871 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
872 reg);
873 total_qps++;
874 }
875 }
876}
877
878/**
879 * i40e_enable_vf_mappings
880 * @vf: pointer to the VF info
881 *
882 * enable VF mappings
883 **/
884static void i40e_enable_vf_mappings(struct i40e_vf *vf)
885{
886 struct i40e_pf *pf = vf->pf;
887 struct i40e_hw *hw = &pf->hw;
888 u32 reg;
889
890 /* Tell the hardware we're using noncontiguous mapping. HW requires
891 * that VF queues be mapped using this method, even when they are
892 * contiguous in real life
893 */
894 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
895 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
896
897 /* enable VF vplan_qtable mappings */
898 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
899 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
900
901 i40e_map_pf_to_vf_queues(vf);
902 i40e_map_pf_queues_to_vsi(vf);
903
904 i40e_flush(hw);
905}
906
907/**
908 * i40e_disable_vf_mappings
909 * @vf: pointer to the VF info
910 *
911 * disable VF mappings
912 **/
913static void i40e_disable_vf_mappings(struct i40e_vf *vf)
914{
915 struct i40e_pf *pf = vf->pf;
916 struct i40e_hw *hw = &pf->hw;
917 int i;
918
919 /* disable qp mappings */
920 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
921 for (i = 0; i < I40E_MAX_VSI_QP; i++)
922 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
923 I40E_QUEUE_END_OF_LIST);
924 i40e_flush(hw);
925}
926
927/**
928 * i40e_free_vf_res
929 * @vf: pointer to the VF info
930 *
931 * free VF resources
932 **/
933static void i40e_free_vf_res(struct i40e_vf *vf)
934{
935 struct i40e_pf *pf = vf->pf;
936 struct i40e_hw *hw = &pf->hw;
937 u32 reg_idx, reg;
938 int i, j, msix_vf;
939
940 /* Start by disabling VF's configuration API to prevent the OS from
941 * accessing the VF's VSI after it's freed / invalidated.
942 */
943 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
944
945 /* It's possible the VF had requeuested more queues than the default so
946 * do the accounting here when we're about to free them.
947 */
948 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
949 pf->queues_left += vf->num_queue_pairs -
950 I40E_DEFAULT_QUEUES_PER_VF;
951 }
952
953 /* free vsi & disconnect it from the parent uplink */
954 if (vf->lan_vsi_idx) {
955 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
956 vf->lan_vsi_idx = 0;
957 vf->lan_vsi_id = 0;
958 vf->num_mac = 0;
959 }
960
961 /* do the accounting and remove additional ADq VSI's */
962 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
963 for (j = 0; j < vf->num_tc; j++) {
964 /* At this point VSI0 is already released so don't
965 * release it again and only clear their values in
966 * structure variables
967 */
968 if (j)
969 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
970 vf->ch[j].vsi_idx = 0;
971 vf->ch[j].vsi_id = 0;
972 }
973 }
974 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
975
976 /* disable interrupts so the VF starts in a known state */
977 for (i = 0; i < msix_vf; i++) {
978 /* format is same for both registers */
979 if (0 == i)
980 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
981 else
982 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
983 (vf->vf_id))
984 + (i - 1));
985 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
986 i40e_flush(hw);
987 }
988
989 /* clear the irq settings */
990 for (i = 0; i < msix_vf; i++) {
991 /* format is same for both registers */
992 if (0 == i)
993 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
994 else
995 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
996 (vf->vf_id))
997 + (i - 1));
998 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
999 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1000 wr32(hw, reg_idx, reg);
1001 i40e_flush(hw);
1002 }
1003 /* reset some of the state variables keeping track of the resources */
1004 vf->num_queue_pairs = 0;
1005 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1006 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1007}
1008
1009/**
1010 * i40e_alloc_vf_res
1011 * @vf: pointer to the VF info
1012 *
1013 * allocate VF resources
1014 **/
1015static int i40e_alloc_vf_res(struct i40e_vf *vf)
1016{
1017 struct i40e_pf *pf = vf->pf;
1018 int total_queue_pairs = 0;
1019 int ret, idx;
1020
1021 if (vf->num_req_queues &&
1022 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1023 pf->num_vf_qps = vf->num_req_queues;
1024 else
1025 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1026
1027 /* allocate hw vsi context & associated resources */
1028 ret = i40e_alloc_vsi_res(vf, 0);
1029 if (ret)
1030 goto error_alloc;
1031 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1032
1033 /* allocate additional VSIs based on tc information for ADq */
1034 if (vf->adq_enabled) {
1035 if (pf->queues_left >=
1036 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1037 /* TC 0 always belongs to VF VSI */
1038 for (idx = 1; idx < vf->num_tc; idx++) {
1039 ret = i40e_alloc_vsi_res(vf, idx);
1040 if (ret)
1041 goto error_alloc;
1042 }
1043 /* send correct number of queues */
1044 total_queue_pairs = I40E_MAX_VF_QUEUES;
1045 } else {
1046 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1047 vf->vf_id);
1048 vf->adq_enabled = false;
1049 }
1050 }
1051
1052 /* We account for each VF to get a default number of queue pairs. If
1053 * the VF has now requested more, we need to account for that to make
1054 * certain we never request more queues than we actually have left in
1055 * HW.
1056 */
1057 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1058 pf->queues_left -=
1059 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1060
1061 if (vf->trusted)
1062 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1063 else
1064 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1065
1066 /* store the total qps number for the runtime
1067 * VF req validation
1068 */
1069 vf->num_queue_pairs = total_queue_pairs;
1070
1071 /* VF is now completely initialized */
1072 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1073
1074error_alloc:
1075 if (ret)
1076 i40e_free_vf_res(vf);
1077
1078 return ret;
1079}
1080
1081#define VF_DEVICE_STATUS 0xAA
1082#define VF_TRANS_PENDING_MASK 0x20
1083/**
1084 * i40e_quiesce_vf_pci
1085 * @vf: pointer to the VF structure
1086 *
1087 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1088 * if the transactions never clear.
1089 **/
1090static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1091{
1092 struct i40e_pf *pf = vf->pf;
1093 struct i40e_hw *hw = &pf->hw;
1094 int vf_abs_id, i;
1095 u32 reg;
1096
1097 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1098
1099 wr32(hw, I40E_PF_PCI_CIAA,
1100 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1101 for (i = 0; i < 100; i++) {
1102 reg = rd32(hw, I40E_PF_PCI_CIAD);
1103 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1104 return 0;
1105 udelay(1);
1106 }
1107 return -EIO;
1108}
1109
1110static inline int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi);
1111
1112/**
1113 * i40e_config_vf_promiscuous_mode
1114 * @vf: pointer to the VF info
1115 * @vsi_id: VSI id
1116 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1117 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1118 *
1119 * Called from the VF to configure the promiscuous mode of
1120 * VF vsis and from the VF reset path to reset promiscuous mode.
1121 **/
1122static i40e_status i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1123 u16 vsi_id,
1124 bool allmulti,
1125 bool alluni)
1126{
1127 struct i40e_pf *pf = vf->pf;
1128 struct i40e_hw *hw = &pf->hw;
1129 struct i40e_mac_filter *f;
1130 i40e_status aq_ret = 0;
1131 struct i40e_vsi *vsi;
1132 int bkt;
1133
1134 vsi = i40e_find_vsi_from_id(pf, vsi_id);
1135 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1136 return I40E_ERR_PARAM;
1137
1138 if (vf->port_vlan_id) {
1139 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, vsi->seid,
1140 allmulti,
1141 vf->port_vlan_id,
1142 NULL);
1143 if (aq_ret) {
1144 int aq_err = pf->hw.aq.asq_last_status;
1145
1146 dev_err(&pf->pdev->dev,
1147 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1148 vf->vf_id,
1149 i40e_stat_str(&pf->hw, aq_ret),
1150 i40e_aq_str(&pf->hw, aq_err));
1151 return aq_ret;
1152 }
1153
1154 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, vsi->seid,
1155 alluni,
1156 vf->port_vlan_id,
1157 NULL);
1158 if (aq_ret) {
1159 int aq_err = pf->hw.aq.asq_last_status;
1160
1161 dev_err(&pf->pdev->dev,
1162 "VF %d failed to set unicast promiscuous mode err %s aq_err %s\n",
1163 vf->vf_id,
1164 i40e_stat_str(&pf->hw, aq_ret),
1165 i40e_aq_str(&pf->hw, aq_err));
1166 }
1167 return aq_ret;
1168 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1169 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1170 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1171 continue;
1172 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw,
1173 vsi->seid,
1174 allmulti,
1175 f->vlan,
1176 NULL);
1177 if (aq_ret) {
1178 int aq_err = pf->hw.aq.asq_last_status;
1179
1180 dev_err(&pf->pdev->dev,
1181 "Could not add VLAN %d to multicast promiscuous domain err %s aq_err %s\n",
1182 f->vlan,
1183 i40e_stat_str(&pf->hw, aq_ret),
1184 i40e_aq_str(&pf->hw, aq_err));
1185 }
1186
1187 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw,
1188 vsi->seid,
1189 alluni,
1190 f->vlan,
1191 NULL);
1192 if (aq_ret) {
1193 int aq_err = pf->hw.aq.asq_last_status;
1194
1195 dev_err(&pf->pdev->dev,
1196 "Could not add VLAN %d to Unicast promiscuous domain err %s aq_err %s\n",
1197 f->vlan,
1198 i40e_stat_str(&pf->hw, aq_ret),
1199 i40e_aq_str(&pf->hw, aq_err));
1200 }
1201 }
1202 return aq_ret;
1203 }
1204 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid, allmulti,
1205 NULL);
1206 if (aq_ret) {
1207 int aq_err = pf->hw.aq.asq_last_status;
1208
1209 dev_err(&pf->pdev->dev,
1210 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1211 vf->vf_id,
1212 i40e_stat_str(&pf->hw, aq_ret),
1213 i40e_aq_str(&pf->hw, aq_err));
1214 return aq_ret;
1215 }
1216
1217 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, vsi->seid, alluni,
1218 NULL, true);
1219 if (aq_ret) {
1220 int aq_err = pf->hw.aq.asq_last_status;
1221
1222 dev_err(&pf->pdev->dev,
1223 "VF %d failed to set unicast promiscuous mode err %s aq_err %s\n",
1224 vf->vf_id,
1225 i40e_stat_str(&pf->hw, aq_ret),
1226 i40e_aq_str(&pf->hw, aq_err));
1227 }
1228
1229 return aq_ret;
1230}
1231
1232/**
1233 * i40e_trigger_vf_reset
1234 * @vf: pointer to the VF structure
1235 * @flr: VFLR was issued or not
1236 *
1237 * Trigger hardware to start a reset for a particular VF. Expects the caller
1238 * to wait the proper amount of time to allow hardware to reset the VF before
1239 * it cleans up and restores VF functionality.
1240 **/
1241static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1242{
1243 struct i40e_pf *pf = vf->pf;
1244 struct i40e_hw *hw = &pf->hw;
1245 u32 reg, reg_idx, bit_idx;
1246
1247 /* warn the VF */
1248 clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1249
1250 /* Disable VF's configuration API during reset. The flag is re-enabled
1251 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1252 * It's normally disabled in i40e_free_vf_res(), but it's safer
1253 * to do it earlier to give some time to finish to any VF config
1254 * functions that may still be running at this point.
1255 */
1256 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1257
1258 /* In the case of a VFLR, the HW has already reset the VF and we
1259 * just need to clean up, so don't hit the VFRTRIG register.
1260 */
1261 if (!flr) {
1262 /* reset VF using VPGEN_VFRTRIG reg */
1263 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1264 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1265 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1266 i40e_flush(hw);
1267 }
1268 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1269 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1270 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1271 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1272 i40e_flush(hw);
1273
1274 if (i40e_quiesce_vf_pci(vf))
1275 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1276 vf->vf_id);
1277}
1278
1279/**
1280 * i40e_cleanup_reset_vf
1281 * @vf: pointer to the VF structure
1282 *
1283 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1284 * have verified whether the reset is finished properly, and ensure the
1285 * minimum amount of wait time has passed.
1286 **/
1287static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1288{
1289 struct i40e_pf *pf = vf->pf;
1290 struct i40e_hw *hw = &pf->hw;
1291 u32 reg;
1292
1293 /* disable promisc modes in case they were enabled */
1294 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1295
1296 /* free VF resources to begin resetting the VSI state */
1297 i40e_free_vf_res(vf);
1298
1299 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1300 * By doing this we allow HW to access VF memory at any point. If we
1301 * did it any sooner, HW could access memory while it was being freed
1302 * in i40e_free_vf_res(), causing an IOMMU fault.
1303 *
1304 * On the other hand, this needs to be done ASAP, because the VF driver
1305 * is waiting for this to happen and may report a timeout. It's
1306 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1307 * it.
1308 */
1309 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1310 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1311 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1312
1313 /* reallocate VF resources to finish resetting the VSI state */
1314 if (!i40e_alloc_vf_res(vf)) {
1315 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1316 i40e_enable_vf_mappings(vf);
1317 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1318 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1319 /* Do not notify the client during VF init */
1320 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1321 &vf->vf_states))
1322 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1323 vf->num_vlan = 0;
1324 }
1325
1326 /* Tell the VF driver the reset is done. This needs to be done only
1327 * after VF has been fully initialized, because the VF driver may
1328 * request resources immediately after setting this flag.
1329 */
1330 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1331}
1332
1333/**
1334 * i40e_reset_vf
1335 * @vf: pointer to the VF structure
1336 * @flr: VFLR was issued or not
1337 *
1338 * Returns true if the VF is reset, false otherwise.
1339 **/
1340bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1341{
1342 struct i40e_pf *pf = vf->pf;
1343 struct i40e_hw *hw = &pf->hw;
1344 bool rsd = false;
1345 u32 reg;
1346 int i;
1347
1348 /* If the VFs have been disabled, this means something else is
1349 * resetting the VF, so we shouldn't continue.
1350 */
1351 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1352 return false;
1353
1354 i40e_trigger_vf_reset(vf, flr);
1355
1356 /* poll VPGEN_VFRSTAT reg to make sure
1357 * that reset is complete
1358 */
1359 for (i = 0; i < 10; i++) {
1360 /* VF reset requires driver to first reset the VF and then
1361 * poll the status register to make sure that the reset
1362 * completed successfully. Due to internal HW FIFO flushes,
1363 * we must wait 10ms before the register will be valid.
1364 */
1365 usleep_range(10000, 20000);
1366 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1367 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1368 rsd = true;
1369 break;
1370 }
1371 }
1372
1373 if (flr)
1374 usleep_range(10000, 20000);
1375
1376 if (!rsd)
1377 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1378 vf->vf_id);
1379 usleep_range(10000, 20000);
1380
1381 /* On initial reset, we don't have any queues to disable */
1382 if (vf->lan_vsi_idx != 0)
1383 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1384
1385 i40e_cleanup_reset_vf(vf);
1386
1387 i40e_flush(hw);
1388 clear_bit(__I40E_VF_DISABLE, pf->state);
1389
1390 return true;
1391}
1392
1393/**
1394 * i40e_reset_all_vfs
1395 * @pf: pointer to the PF structure
1396 * @flr: VFLR was issued or not
1397 *
1398 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1399 * VF, then do all the waiting in one chunk, and finally finish restoring each
1400 * VF after the wait. This is useful during PF routines which need to reset
1401 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1402 *
1403 * Returns true if any VFs were reset, and false otherwise.
1404 **/
1405bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1406{
1407 struct i40e_hw *hw = &pf->hw;
1408 struct i40e_vf *vf;
1409 int i, v;
1410 u32 reg;
1411
1412 /* If we don't have any VFs, then there is nothing to reset */
1413 if (!pf->num_alloc_vfs)
1414 return false;
1415
1416 /* If VFs have been disabled, there is no need to reset */
1417 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1418 return false;
1419
1420 /* Begin reset on all VFs at once */
1421 for (v = 0; v < pf->num_alloc_vfs; v++)
1422 i40e_trigger_vf_reset(&pf->vf[v], flr);
1423
1424 /* HW requires some time to make sure it can flush the FIFO for a VF
1425 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1426 * sequence to make sure that it has completed. We'll keep track of
1427 * the VFs using a simple iterator that increments once that VF has
1428 * finished resetting.
1429 */
1430 for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
1431 usleep_range(10000, 20000);
1432
1433 /* Check each VF in sequence, beginning with the VF to fail
1434 * the previous check.
1435 */
1436 while (v < pf->num_alloc_vfs) {
1437 vf = &pf->vf[v];
1438 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1439 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1440 break;
1441
1442 /* If the current VF has finished resetting, move on
1443 * to the next VF in sequence.
1444 */
1445 v++;
1446 }
1447 }
1448
1449 if (flr)
1450 usleep_range(10000, 20000);
1451
1452 /* Display a warning if at least one VF didn't manage to reset in
1453 * time, but continue on with the operation.
1454 */
1455 if (v < pf->num_alloc_vfs)
1456 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1457 pf->vf[v].vf_id);
1458 usleep_range(10000, 20000);
1459
1460 /* Begin disabling all the rings associated with VFs, but do not wait
1461 * between each VF.
1462 */
1463 for (v = 0; v < pf->num_alloc_vfs; v++) {
1464 /* On initial reset, we don't have any queues to disable */
1465 if (pf->vf[v].lan_vsi_idx == 0)
1466 continue;
1467
1468 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[v].lan_vsi_idx]);
1469 }
1470
1471 /* Now that we've notified HW to disable all of the VF rings, wait
1472 * until they finish.
1473 */
1474 for (v = 0; v < pf->num_alloc_vfs; v++) {
1475 /* On initial reset, we don't have any queues to disable */
1476 if (pf->vf[v].lan_vsi_idx == 0)
1477 continue;
1478
1479 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[v].lan_vsi_idx]);
1480 }
1481
1482 /* Hw may need up to 50ms to finish disabling the RX queues. We
1483 * minimize the wait by delaying only once for all VFs.
1484 */
1485 mdelay(50);
1486
1487 /* Finish the reset on each VF */
1488 for (v = 0; v < pf->num_alloc_vfs; v++)
1489 i40e_cleanup_reset_vf(&pf->vf[v]);
1490
1491 i40e_flush(hw);
1492 clear_bit(__I40E_VF_DISABLE, pf->state);
1493
1494 return true;
1495}
1496
1497/**
1498 * i40e_free_vfs
1499 * @pf: pointer to the PF structure
1500 *
1501 * free VF resources
1502 **/
1503void i40e_free_vfs(struct i40e_pf *pf)
1504{
1505 struct i40e_hw *hw = &pf->hw;
1506 u32 reg_idx, bit_idx;
1507 int i, tmp, vf_id;
1508
1509 if (!pf->vf)
1510 return;
1511 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1512 usleep_range(1000, 2000);
1513
1514 i40e_notify_client_of_vf_enable(pf, 0);
1515
1516 /* Amortize wait time by stopping all VFs at the same time */
1517 for (i = 0; i < pf->num_alloc_vfs; i++) {
1518 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1519 continue;
1520
1521 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1522 }
1523
1524 for (i = 0; i < pf->num_alloc_vfs; i++) {
1525 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1526 continue;
1527
1528 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1529 }
1530
1531 /* Disable IOV before freeing resources. This lets any VF drivers
1532 * running in the host get themselves cleaned up before we yank
1533 * the carpet out from underneath their feet.
1534 */
1535 if (!pci_vfs_assigned(pf->pdev))
1536 pci_disable_sriov(pf->pdev);
1537 else
1538 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1539
1540 /* free up VF resources */
1541 tmp = pf->num_alloc_vfs;
1542 pf->num_alloc_vfs = 0;
1543 for (i = 0; i < tmp; i++) {
1544 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1545 i40e_free_vf_res(&pf->vf[i]);
1546 /* disable qp mappings */
1547 i40e_disable_vf_mappings(&pf->vf[i]);
1548 }
1549
1550 kfree(pf->vf);
1551 pf->vf = NULL;
1552
1553 /* This check is for when the driver is unloaded while VFs are
1554 * assigned. Setting the number of VFs to 0 through sysfs is caught
1555 * before this function ever gets called.
1556 */
1557 if (!pci_vfs_assigned(pf->pdev)) {
1558 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1559 * work correctly when SR-IOV gets re-enabled.
1560 */
1561 for (vf_id = 0; vf_id < tmp; vf_id++) {
1562 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1563 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1564 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1565 }
1566 }
1567 clear_bit(__I40E_VF_DISABLE, pf->state);
1568}
1569
1570#ifdef CONFIG_PCI_IOV
1571/**
1572 * i40e_alloc_vfs
1573 * @pf: pointer to the PF structure
1574 * @num_alloc_vfs: number of VFs to allocate
1575 *
1576 * allocate VF resources
1577 **/
1578int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1579{
1580 struct i40e_vf *vfs;
1581 int i, ret = 0;
1582
1583 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1584 i40e_irq_dynamic_disable_icr0(pf);
1585
1586 /* Check to see if we're just allocating resources for extant VFs */
1587 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1588 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1589 if (ret) {
1590 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1591 pf->num_alloc_vfs = 0;
1592 goto err_iov;
1593 }
1594 }
1595 /* allocate memory */
1596 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1597 if (!vfs) {
1598 ret = -ENOMEM;
1599 goto err_alloc;
1600 }
1601 pf->vf = vfs;
1602
1603 /* apply default profile */
1604 for (i = 0; i < num_alloc_vfs; i++) {
1605 vfs[i].pf = pf;
1606 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1607 vfs[i].vf_id = i;
1608
1609 /* assign default capabilities */
1610 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1611 vfs[i].spoofchk = true;
1612
1613 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1614
1615 }
1616 pf->num_alloc_vfs = num_alloc_vfs;
1617
1618 /* VF resources get allocated during reset */
1619 i40e_reset_all_vfs(pf, false);
1620
1621 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1622
1623err_alloc:
1624 if (ret)
1625 i40e_free_vfs(pf);
1626err_iov:
1627 /* Re-enable interrupt 0. */
1628 i40e_irq_dynamic_enable_icr0(pf);
1629 return ret;
1630}
1631
1632#endif
1633/**
1634 * i40e_pci_sriov_enable
1635 * @pdev: pointer to a pci_dev structure
1636 * @num_vfs: number of VFs to allocate
1637 *
1638 * Enable or change the number of VFs
1639 **/
1640static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1641{
1642#ifdef CONFIG_PCI_IOV
1643 struct i40e_pf *pf = pci_get_drvdata(pdev);
1644 int pre_existing_vfs = pci_num_vf(pdev);
1645 int err = 0;
1646
1647 if (test_bit(__I40E_TESTING, pf->state)) {
1648 dev_warn(&pdev->dev,
1649 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1650 err = -EPERM;
1651 goto err_out;
1652 }
1653
1654 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1655 i40e_free_vfs(pf);
1656 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1657 goto out;
1658
1659 if (num_vfs > pf->num_req_vfs) {
1660 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1661 num_vfs, pf->num_req_vfs);
1662 err = -EPERM;
1663 goto err_out;
1664 }
1665
1666 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1667 err = i40e_alloc_vfs(pf, num_vfs);
1668 if (err) {
1669 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1670 goto err_out;
1671 }
1672
1673out:
1674 return num_vfs;
1675
1676err_out:
1677 return err;
1678#endif
1679 return 0;
1680}
1681
1682/**
1683 * i40e_pci_sriov_configure
1684 * @pdev: pointer to a pci_dev structure
1685 * @num_vfs: number of VFs to allocate
1686 *
1687 * Enable or change the number of VFs. Called when the user updates the number
1688 * of VFs in sysfs.
1689 **/
1690int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1691{
1692 struct i40e_pf *pf = pci_get_drvdata(pdev);
1693 int ret = 0;
1694
1695 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1696 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1697 return -EAGAIN;
1698 }
1699
1700 if (num_vfs) {
1701 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1702 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1703 i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG);
1704 }
1705 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1706 goto sriov_configure_out;
1707 }
1708
1709 if (!pci_vfs_assigned(pf->pdev)) {
1710 i40e_free_vfs(pf);
1711 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1712 i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG);
1713 } else {
1714 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1715 ret = -EINVAL;
1716 goto sriov_configure_out;
1717 }
1718sriov_configure_out:
1719 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1720 return ret;
1721}
1722
1723/***********************virtual channel routines******************/
1724
1725/**
1726 * i40e_vc_send_msg_to_vf
1727 * @vf: pointer to the VF info
1728 * @v_opcode: virtual channel opcode
1729 * @v_retval: virtual channel return value
1730 * @msg: pointer to the msg buffer
1731 * @msglen: msg length
1732 *
1733 * send msg to VF
1734 **/
1735static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1736 u32 v_retval, u8 *msg, u16 msglen)
1737{
1738 struct i40e_pf *pf;
1739 struct i40e_hw *hw;
1740 int abs_vf_id;
1741 i40e_status aq_ret;
1742
1743 /* validate the request */
1744 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1745 return -EINVAL;
1746
1747 pf = vf->pf;
1748 hw = &pf->hw;
1749 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1750
1751 /* single place to detect unsuccessful return values */
1752 if (v_retval) {
1753 vf->num_invalid_msgs++;
1754 dev_info(&pf->pdev->dev, "VF %d failed opcode %d, retval: %d\n",
1755 vf->vf_id, v_opcode, v_retval);
1756 if (vf->num_invalid_msgs >
1757 I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
1758 dev_err(&pf->pdev->dev,
1759 "Number of invalid messages exceeded for VF %d\n",
1760 vf->vf_id);
1761 dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
1762 set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1763 }
1764 } else {
1765 vf->num_valid_msgs++;
1766 /* reset the invalid counter, if a valid message is received. */
1767 vf->num_invalid_msgs = 0;
1768 }
1769
1770 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1771 msg, msglen, NULL);
1772 if (aq_ret) {
1773 dev_info(&pf->pdev->dev,
1774 "Unable to send the message to VF %d aq_err %d\n",
1775 vf->vf_id, pf->hw.aq.asq_last_status);
1776 return -EIO;
1777 }
1778
1779 return 0;
1780}
1781
1782/**
1783 * i40e_vc_send_resp_to_vf
1784 * @vf: pointer to the VF info
1785 * @opcode: operation code
1786 * @retval: return value
1787 *
1788 * send resp msg to VF
1789 **/
1790static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1791 enum virtchnl_ops opcode,
1792 i40e_status retval)
1793{
1794 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1795}
1796
1797/**
1798 * i40e_vc_get_version_msg
1799 * @vf: pointer to the VF info
1800 * @msg: pointer to the msg buffer
1801 *
1802 * called from the VF to request the API version used by the PF
1803 **/
1804static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
1805{
1806 struct virtchnl_version_info info = {
1807 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
1808 };
1809
1810 vf->vf_ver = *(struct virtchnl_version_info *)msg;
1811 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
1812 if (VF_IS_V10(&vf->vf_ver))
1813 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
1814 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
1815 I40E_SUCCESS, (u8 *)&info,
1816 sizeof(struct virtchnl_version_info));
1817}
1818
1819/**
1820 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
1821 * @vf: pointer to VF structure
1822 **/
1823static void i40e_del_qch(struct i40e_vf *vf)
1824{
1825 struct i40e_pf *pf = vf->pf;
1826 int i;
1827
1828 /* first element in the array belongs to primary VF VSI and we shouldn't
1829 * delete it. We should however delete the rest of the VSIs created
1830 */
1831 for (i = 1; i < vf->num_tc; i++) {
1832 if (vf->ch[i].vsi_idx) {
1833 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
1834 vf->ch[i].vsi_idx = 0;
1835 vf->ch[i].vsi_id = 0;
1836 }
1837 }
1838}
1839
1840/**
1841 * i40e_vc_get_vf_resources_msg
1842 * @vf: pointer to the VF info
1843 * @msg: pointer to the msg buffer
1844 *
1845 * called from the VF to request its resources
1846 **/
1847static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
1848{
1849 struct virtchnl_vf_resource *vfres = NULL;
1850 struct i40e_pf *pf = vf->pf;
1851 i40e_status aq_ret = 0;
1852 struct i40e_vsi *vsi;
1853 int num_vsis = 1;
1854 size_t len = 0;
1855 int ret;
1856
1857 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
1858 aq_ret = I40E_ERR_PARAM;
1859 goto err;
1860 }
1861
1862 len = struct_size(vfres, vsi_res, num_vsis);
1863 vfres = kzalloc(len, GFP_KERNEL);
1864 if (!vfres) {
1865 aq_ret = I40E_ERR_NO_MEMORY;
1866 len = 0;
1867 goto err;
1868 }
1869 if (VF_IS_V11(&vf->vf_ver))
1870 vf->driver_caps = *(u32 *)msg;
1871 else
1872 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
1873 VIRTCHNL_VF_OFFLOAD_RSS_REG |
1874 VIRTCHNL_VF_OFFLOAD_VLAN;
1875
1876 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
1877 vsi = pf->vsi[vf->lan_vsi_idx];
1878 if (!vsi->info.pvid)
1879 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
1880
1881 if (i40e_vf_client_capable(pf, vf->vf_id) &&
1882 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_IWARP)) {
1883 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_IWARP;
1884 set_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
1885 } else {
1886 clear_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
1887 }
1888
1889 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
1890 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
1891 } else {
1892 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
1893 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
1894 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
1895 else
1896 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
1897 }
1898
1899 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
1900 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1901 vfres->vf_cap_flags |=
1902 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
1903 }
1904
1905 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
1906 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
1907
1908 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
1909 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
1910 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
1911
1912 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
1913 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
1914 dev_err(&pf->pdev->dev,
1915 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
1916 vf->vf_id);
1917 aq_ret = I40E_ERR_PARAM;
1918 goto err;
1919 }
1920 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
1921 }
1922
1923 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
1924 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
1925 vfres->vf_cap_flags |=
1926 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
1927 }
1928
1929 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
1930 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
1931
1932 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
1933 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
1934
1935 vfres->num_vsis = num_vsis;
1936 vfres->num_queue_pairs = vf->num_queue_pairs;
1937 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
1938 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
1939 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
1940
1941 if (vf->lan_vsi_idx) {
1942 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
1943 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
1944 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
1945 /* VFs only use TC 0 */
1946 vfres->vsi_res[0].qset_handle
1947 = le16_to_cpu(vsi->info.qs_handle[0]);
1948 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
1949 vf->default_lan_addr.addr);
1950 }
1951 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1952
1953err:
1954 /* send the response back to the VF */
1955 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
1956 aq_ret, (u8 *)vfres, len);
1957
1958 kfree(vfres);
1959 return ret;
1960}
1961
1962/**
1963 * i40e_vc_reset_vf_msg
1964 * @vf: pointer to the VF info
1965 *
1966 * called from the VF to reset itself,
1967 * unlike other virtchnl messages, PF driver
1968 * doesn't send the response back to the VF
1969 **/
1970static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
1971{
1972 if (test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
1973 i40e_reset_vf(vf, false);
1974}
1975
1976/**
1977 * i40e_getnum_vf_vsi_vlan_filters
1978 * @vsi: pointer to the vsi
1979 *
1980 * called to get the number of VLANs offloaded on this VF
1981 **/
1982static inline int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1983{
1984 struct i40e_mac_filter *f;
1985 int num_vlans = 0, bkt;
1986
1987 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1988 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1989 num_vlans++;
1990 }
1991
1992 return num_vlans;
1993}
1994
1995/**
1996 * i40e_vc_config_promiscuous_mode_msg
1997 * @vf: pointer to the VF info
1998 * @msg: pointer to the msg buffer
1999 *
2000 * called from the VF to configure the promiscuous mode of
2001 * VF vsis
2002 **/
2003static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2004{
2005 struct virtchnl_promisc_info *info =
2006 (struct virtchnl_promisc_info *)msg;
2007 struct i40e_pf *pf = vf->pf;
2008 i40e_status aq_ret = 0;
2009 bool allmulti = false;
2010 bool alluni = false;
2011
2012 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2013 aq_ret = I40E_ERR_PARAM;
2014 goto err_out;
2015 }
2016 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2017 dev_err(&pf->pdev->dev,
2018 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2019 vf->vf_id);
2020
2021 /* Lie to the VF on purpose, because this is an error we can
2022 * ignore. Unprivileged VF is not a virtual channel error.
2023 */
2024 aq_ret = 0;
2025 goto err_out;
2026 }
2027
2028 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2029 aq_ret = I40E_ERR_PARAM;
2030 goto err_out;
2031 }
2032
2033 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2034 aq_ret = I40E_ERR_PARAM;
2035 goto err_out;
2036 }
2037
2038 /* Multicast promiscuous handling*/
2039 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2040 allmulti = true;
2041
2042 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2043 alluni = true;
2044 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2045 alluni);
2046 if (aq_ret)
2047 goto err_out;
2048
2049 if (allmulti) {
2050 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2051 &vf->vf_states))
2052 dev_info(&pf->pdev->dev,
2053 "VF %d successfully set multicast promiscuous mode\n",
2054 vf->vf_id);
2055 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2056 &vf->vf_states))
2057 dev_info(&pf->pdev->dev,
2058 "VF %d successfully unset multicast promiscuous mode\n",
2059 vf->vf_id);
2060
2061 if (alluni) {
2062 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2063 &vf->vf_states))
2064 dev_info(&pf->pdev->dev,
2065 "VF %d successfully set unicast promiscuous mode\n",
2066 vf->vf_id);
2067 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2068 &vf->vf_states))
2069 dev_info(&pf->pdev->dev,
2070 "VF %d successfully unset unicast promiscuous mode\n",
2071 vf->vf_id);
2072
2073err_out:
2074 /* send the response to the VF */
2075 return i40e_vc_send_resp_to_vf(vf,
2076 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2077 aq_ret);
2078}
2079
2080/**
2081 * i40e_vc_config_queues_msg
2082 * @vf: pointer to the VF info
2083 * @msg: pointer to the msg buffer
2084 *
2085 * called from the VF to configure the rx/tx
2086 * queues
2087 **/
2088static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2089{
2090 struct virtchnl_vsi_queue_config_info *qci =
2091 (struct virtchnl_vsi_queue_config_info *)msg;
2092 struct virtchnl_queue_pair_info *qpi;
2093 struct i40e_pf *pf = vf->pf;
2094 u16 vsi_id, vsi_queue_id = 0;
2095 u16 num_qps_all = 0;
2096 i40e_status aq_ret = 0;
2097 int i, j = 0, idx = 0;
2098
2099 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2100 aq_ret = I40E_ERR_PARAM;
2101 goto error_param;
2102 }
2103
2104 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2105 aq_ret = I40E_ERR_PARAM;
2106 goto error_param;
2107 }
2108
2109 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2110 aq_ret = I40E_ERR_PARAM;
2111 goto error_param;
2112 }
2113
2114 if (vf->adq_enabled) {
2115 for (i = 0; i < I40E_MAX_VF_VSI; i++)
2116 num_qps_all += vf->ch[i].num_qps;
2117 if (num_qps_all != qci->num_queue_pairs) {
2118 aq_ret = I40E_ERR_PARAM;
2119 goto error_param;
2120 }
2121 }
2122
2123 vsi_id = qci->vsi_id;
2124
2125 for (i = 0; i < qci->num_queue_pairs; i++) {
2126 qpi = &qci->qpair[i];
2127
2128 if (!vf->adq_enabled) {
2129 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2130 qpi->txq.queue_id)) {
2131 aq_ret = I40E_ERR_PARAM;
2132 goto error_param;
2133 }
2134
2135 vsi_queue_id = qpi->txq.queue_id;
2136
2137 if (qpi->txq.vsi_id != qci->vsi_id ||
2138 qpi->rxq.vsi_id != qci->vsi_id ||
2139 qpi->rxq.queue_id != vsi_queue_id) {
2140 aq_ret = I40E_ERR_PARAM;
2141 goto error_param;
2142 }
2143 }
2144
2145 if (vf->adq_enabled) {
2146 if (idx >= ARRAY_SIZE(vf->ch)) {
2147 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2148 goto error_param;
2149 }
2150 vsi_id = vf->ch[idx].vsi_id;
2151 }
2152
2153 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2154 &qpi->rxq) ||
2155 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2156 &qpi->txq)) {
2157 aq_ret = I40E_ERR_PARAM;
2158 goto error_param;
2159 }
2160
2161 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2162 * VF does not know about these additional VSIs and all
2163 * it cares is about its own queues. PF configures these queues
2164 * to its appropriate VSIs based on TC mapping
2165 */
2166 if (vf->adq_enabled) {
2167 if (idx >= ARRAY_SIZE(vf->ch)) {
2168 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2169 goto error_param;
2170 }
2171 if (j == (vf->ch[idx].num_qps - 1)) {
2172 idx++;
2173 j = 0; /* resetting the queue count */
2174 vsi_queue_id = 0;
2175 } else {
2176 j++;
2177 vsi_queue_id++;
2178 }
2179 }
2180 }
2181 /* set vsi num_queue_pairs in use to num configured by VF */
2182 if (!vf->adq_enabled) {
2183 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2184 qci->num_queue_pairs;
2185 } else {
2186 for (i = 0; i < vf->num_tc; i++)
2187 pf->vsi[vf->ch[i].vsi_idx]->num_queue_pairs =
2188 vf->ch[i].num_qps;
2189 }
2190
2191error_param:
2192 /* send the response to the VF */
2193 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2194 aq_ret);
2195}
2196
2197/**
2198 * i40e_validate_queue_map
2199 * @vsi_id: vsi id
2200 * @queuemap: Tx or Rx queue map
2201 *
2202 * check if Tx or Rx queue map is valid
2203 **/
2204static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2205 unsigned long queuemap)
2206{
2207 u16 vsi_queue_id, queue_id;
2208
2209 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2210 if (vf->adq_enabled) {
2211 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2212 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2213 } else {
2214 queue_id = vsi_queue_id;
2215 }
2216
2217 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2218 return -EINVAL;
2219 }
2220
2221 return 0;
2222}
2223
2224/**
2225 * i40e_vc_config_irq_map_msg
2226 * @vf: pointer to the VF info
2227 * @msg: pointer to the msg buffer
2228 *
2229 * called from the VF to configure the irq to
2230 * queue map
2231 **/
2232static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2233{
2234 struct virtchnl_irq_map_info *irqmap_info =
2235 (struct virtchnl_irq_map_info *)msg;
2236 struct virtchnl_vector_map *map;
2237 u16 vsi_id;
2238 i40e_status aq_ret = 0;
2239 int i;
2240
2241 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2242 aq_ret = I40E_ERR_PARAM;
2243 goto error_param;
2244 }
2245
2246 if (irqmap_info->num_vectors >
2247 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2248 aq_ret = I40E_ERR_PARAM;
2249 goto error_param;
2250 }
2251
2252 for (i = 0; i < irqmap_info->num_vectors; i++) {
2253 map = &irqmap_info->vecmap[i];
2254 /* validate msg params */
2255 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2256 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2257 aq_ret = I40E_ERR_PARAM;
2258 goto error_param;
2259 }
2260 vsi_id = map->vsi_id;
2261
2262 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2263 aq_ret = I40E_ERR_PARAM;
2264 goto error_param;
2265 }
2266
2267 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2268 aq_ret = I40E_ERR_PARAM;
2269 goto error_param;
2270 }
2271
2272 i40e_config_irq_link_list(vf, vsi_id, map);
2273 }
2274error_param:
2275 /* send the response to the VF */
2276 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2277 aq_ret);
2278}
2279
2280/**
2281 * i40e_ctrl_vf_tx_rings
2282 * @vsi: the SRIOV VSI being configured
2283 * @q_map: bit map of the queues to be enabled
2284 * @enable: start or stop the queue
2285 **/
2286static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2287 bool enable)
2288{
2289 struct i40e_pf *pf = vsi->back;
2290 int ret = 0;
2291 u16 q_id;
2292
2293 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2294 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2295 vsi->base_queue + q_id,
2296 false /*is xdp*/, enable);
2297 if (ret)
2298 break;
2299 }
2300 return ret;
2301}
2302
2303/**
2304 * i40e_ctrl_vf_rx_rings
2305 * @vsi: the SRIOV VSI being configured
2306 * @q_map: bit map of the queues to be enabled
2307 * @enable: start or stop the queue
2308 **/
2309static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2310 bool enable)
2311{
2312 struct i40e_pf *pf = vsi->back;
2313 int ret = 0;
2314 u16 q_id;
2315
2316 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2317 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2318 enable);
2319 if (ret)
2320 break;
2321 }
2322 return ret;
2323}
2324
2325/**
2326 * i40e_vc_enable_queues_msg
2327 * @vf: pointer to the VF info
2328 * @msg: pointer to the msg buffer
2329 *
2330 * called from the VF to enable all or specific queue(s)
2331 **/
2332static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2333{
2334 struct virtchnl_queue_select *vqs =
2335 (struct virtchnl_queue_select *)msg;
2336 struct i40e_pf *pf = vf->pf;
2337 i40e_status aq_ret = 0;
2338 int i;
2339
2340 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2341 aq_ret = I40E_ERR_PARAM;
2342 goto error_param;
2343 }
2344
2345 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2346 aq_ret = I40E_ERR_PARAM;
2347 goto error_param;
2348 }
2349
2350 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
2351 aq_ret = I40E_ERR_PARAM;
2352 goto error_param;
2353 }
2354
2355 /* Use the queue bit map sent by the VF */
2356 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2357 true)) {
2358 aq_ret = I40E_ERR_TIMEOUT;
2359 goto error_param;
2360 }
2361 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2362 true)) {
2363 aq_ret = I40E_ERR_TIMEOUT;
2364 goto error_param;
2365 }
2366
2367 /* need to start the rings for additional ADq VSI's as well */
2368 if (vf->adq_enabled) {
2369 /* zero belongs to LAN VSI */
2370 for (i = 1; i < vf->num_tc; i++) {
2371 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2372 aq_ret = I40E_ERR_TIMEOUT;
2373 }
2374 }
2375
2376 vf->queues_enabled = true;
2377
2378error_param:
2379 /* send the response to the VF */
2380 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2381 aq_ret);
2382}
2383
2384/**
2385 * i40e_vc_disable_queues_msg
2386 * @vf: pointer to the VF info
2387 * @msg: pointer to the msg buffer
2388 *
2389 * called from the VF to disable all or specific
2390 * queue(s)
2391 **/
2392static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2393{
2394 struct virtchnl_queue_select *vqs =
2395 (struct virtchnl_queue_select *)msg;
2396 struct i40e_pf *pf = vf->pf;
2397 i40e_status aq_ret = 0;
2398
2399 /* Immediately mark queues as disabled */
2400 vf->queues_enabled = false;
2401
2402 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2403 aq_ret = I40E_ERR_PARAM;
2404 goto error_param;
2405 }
2406
2407 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2408 aq_ret = I40E_ERR_PARAM;
2409 goto error_param;
2410 }
2411
2412 if ((vqs->rx_queues == 0 && vqs->tx_queues == 0) ||
2413 vqs->rx_queues > I40E_MAX_VF_QUEUES ||
2414 vqs->tx_queues > I40E_MAX_VF_QUEUES) {
2415 aq_ret = I40E_ERR_PARAM;
2416 goto error_param;
2417 }
2418
2419 /* Use the queue bit map sent by the VF */
2420 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2421 false)) {
2422 aq_ret = I40E_ERR_TIMEOUT;
2423 goto error_param;
2424 }
2425 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2426 false)) {
2427 aq_ret = I40E_ERR_TIMEOUT;
2428 goto error_param;
2429 }
2430error_param:
2431 /* send the response to the VF */
2432 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2433 aq_ret);
2434}
2435
2436/**
2437 * i40e_vc_request_queues_msg
2438 * @vf: pointer to the VF info
2439 * @msg: pointer to the msg buffer
2440 *
2441 * VFs get a default number of queues but can use this message to request a
2442 * different number. If the request is successful, PF will reset the VF and
2443 * return 0. If unsuccessful, PF will send message informing VF of number of
2444 * available queues and return result of sending VF a message.
2445 **/
2446static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2447{
2448 struct virtchnl_vf_res_request *vfres =
2449 (struct virtchnl_vf_res_request *)msg;
2450 u16 req_pairs = vfres->num_queue_pairs;
2451 u8 cur_pairs = vf->num_queue_pairs;
2452 struct i40e_pf *pf = vf->pf;
2453
2454 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
2455 return -EINVAL;
2456
2457 if (req_pairs > I40E_MAX_VF_QUEUES) {
2458 dev_err(&pf->pdev->dev,
2459 "VF %d tried to request more than %d queues.\n",
2460 vf->vf_id,
2461 I40E_MAX_VF_QUEUES);
2462 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2463 } else if (req_pairs - cur_pairs > pf->queues_left) {
2464 dev_warn(&pf->pdev->dev,
2465 "VF %d requested %d more queues, but only %d left.\n",
2466 vf->vf_id,
2467 req_pairs - cur_pairs,
2468 pf->queues_left);
2469 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2470 } else {
2471 /* successful request */
2472 vf->num_req_queues = req_pairs;
2473 i40e_vc_notify_vf_reset(vf);
2474 i40e_reset_vf(vf, false);
2475 return 0;
2476 }
2477
2478 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2479 (u8 *)vfres, sizeof(*vfres));
2480}
2481
2482/**
2483 * i40e_vc_get_stats_msg
2484 * @vf: pointer to the VF info
2485 * @msg: pointer to the msg buffer
2486 *
2487 * called from the VF to get vsi stats
2488 **/
2489static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2490{
2491 struct virtchnl_queue_select *vqs =
2492 (struct virtchnl_queue_select *)msg;
2493 struct i40e_pf *pf = vf->pf;
2494 struct i40e_eth_stats stats;
2495 i40e_status aq_ret = 0;
2496 struct i40e_vsi *vsi;
2497
2498 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2499
2500 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2501 aq_ret = I40E_ERR_PARAM;
2502 goto error_param;
2503 }
2504
2505 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2506 aq_ret = I40E_ERR_PARAM;
2507 goto error_param;
2508 }
2509
2510 vsi = pf->vsi[vf->lan_vsi_idx];
2511 if (!vsi) {
2512 aq_ret = I40E_ERR_PARAM;
2513 goto error_param;
2514 }
2515 i40e_update_eth_stats(vsi);
2516 stats = vsi->eth_stats;
2517
2518error_param:
2519 /* send the response back to the VF */
2520 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2521 (u8 *)&stats, sizeof(stats));
2522}
2523
2524/* If the VF is not trusted restrict the number of MAC/VLAN it can program
2525 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2526 */
2527#define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2528#define I40E_VC_MAX_VLAN_PER_VF 16
2529
2530/**
2531 * i40e_check_vf_permission
2532 * @vf: pointer to the VF info
2533 * @al: MAC address list from virtchnl
2534 *
2535 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2536 * if any address in the list is not valid. Checks the following conditions:
2537 *
2538 * 1) broadcast and zero addresses are never valid
2539 * 2) unicast addresses are not allowed if the VMM has administratively set
2540 * the VF MAC address, unless the VF is marked as privileged.
2541 * 3) There is enough space to add all the addresses.
2542 *
2543 * Note that to guarantee consistency, it is expected this function be called
2544 * while holding the mac_filter_hash_lock, as otherwise the current number of
2545 * addresses might not be accurate.
2546 **/
2547static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2548 struct virtchnl_ether_addr_list *al)
2549{
2550 struct i40e_pf *pf = vf->pf;
2551 int i;
2552
2553 /* If this VF is not privileged, then we can't add more than a limited
2554 * number of addresses. Check to make sure that the additions do not
2555 * push us over the limit.
2556 */
2557 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2558 (vf->num_mac + al->num_elements) > I40E_VC_MAX_MAC_ADDR_PER_VF) {
2559 dev_err(&pf->pdev->dev,
2560 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2561 return -EPERM;
2562 }
2563
2564 for (i = 0; i < al->num_elements; i++) {
2565 u8 *addr = al->list[i].addr;
2566
2567 if (is_broadcast_ether_addr(addr) ||
2568 is_zero_ether_addr(addr)) {
2569 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2570 addr);
2571 return I40E_ERR_INVALID_MAC_ADDR;
2572 }
2573
2574 /* If the host VMM administrator has set the VF MAC address
2575 * administratively via the ndo_set_vf_mac command then deny
2576 * permission to the VF to add or delete unicast MAC addresses.
2577 * Unless the VF is privileged and then it can do whatever.
2578 * The VF may request to set the MAC address filter already
2579 * assigned to it so do not return an error in that case.
2580 */
2581 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2582 !is_multicast_ether_addr(addr) && vf->pf_set_mac &&
2583 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2584 dev_err(&pf->pdev->dev,
2585 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2586 return -EPERM;
2587 }
2588 }
2589
2590 return 0;
2591}
2592
2593/**
2594 * i40e_vc_add_mac_addr_msg
2595 * @vf: pointer to the VF info
2596 * @msg: pointer to the msg buffer
2597 *
2598 * add guest mac address filter
2599 **/
2600static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2601{
2602 struct virtchnl_ether_addr_list *al =
2603 (struct virtchnl_ether_addr_list *)msg;
2604 struct i40e_pf *pf = vf->pf;
2605 struct i40e_vsi *vsi = NULL;
2606 i40e_status ret = 0;
2607 int i;
2608
2609 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2610 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2611 ret = I40E_ERR_PARAM;
2612 goto error_param;
2613 }
2614
2615 vsi = pf->vsi[vf->lan_vsi_idx];
2616
2617 /* Lock once, because all function inside for loop accesses VSI's
2618 * MAC filter list which needs to be protected using same lock.
2619 */
2620 spin_lock_bh(&vsi->mac_filter_hash_lock);
2621
2622 ret = i40e_check_vf_permission(vf, al);
2623 if (ret) {
2624 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2625 goto error_param;
2626 }
2627
2628 /* add new addresses to the list */
2629 for (i = 0; i < al->num_elements; i++) {
2630 struct i40e_mac_filter *f;
2631
2632 f = i40e_find_mac(vsi, al->list[i].addr);
2633 if (!f) {
2634 f = i40e_add_mac_filter(vsi, al->list[i].addr);
2635
2636 if (!f) {
2637 dev_err(&pf->pdev->dev,
2638 "Unable to add MAC filter %pM for VF %d\n",
2639 al->list[i].addr, vf->vf_id);
2640 ret = I40E_ERR_PARAM;
2641 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2642 goto error_param;
2643 } else {
2644 vf->num_mac++;
2645 }
2646 }
2647 }
2648 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2649
2650 /* program the updated filter list */
2651 ret = i40e_sync_vsi_filters(vsi);
2652 if (ret)
2653 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2654 vf->vf_id, ret);
2655
2656error_param:
2657 /* send the response to the VF */
2658 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
2659 ret);
2660}
2661
2662/**
2663 * i40e_vc_del_mac_addr_msg
2664 * @vf: pointer to the VF info
2665 * @msg: pointer to the msg buffer
2666 *
2667 * remove guest mac address filter
2668 **/
2669static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2670{
2671 struct virtchnl_ether_addr_list *al =
2672 (struct virtchnl_ether_addr_list *)msg;
2673 struct i40e_pf *pf = vf->pf;
2674 struct i40e_vsi *vsi = NULL;
2675 i40e_status ret = 0;
2676 int i;
2677
2678 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2679 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2680 ret = I40E_ERR_PARAM;
2681 goto error_param;
2682 }
2683
2684 for (i = 0; i < al->num_elements; i++) {
2685 if (is_broadcast_ether_addr(al->list[i].addr) ||
2686 is_zero_ether_addr(al->list[i].addr)) {
2687 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
2688 al->list[i].addr, vf->vf_id);
2689 ret = I40E_ERR_INVALID_MAC_ADDR;
2690 goto error_param;
2691 }
2692
2693 if (vf->pf_set_mac &&
2694 ether_addr_equal(al->list[i].addr,
2695 vf->default_lan_addr.addr)) {
2696 dev_err(&pf->pdev->dev,
2697 "MAC addr %pM has been set by PF, cannot delete it for VF %d, reset VF to change MAC addr\n",
2698 vf->default_lan_addr.addr, vf->vf_id);
2699 ret = I40E_ERR_PARAM;
2700 goto error_param;
2701 }
2702 }
2703 vsi = pf->vsi[vf->lan_vsi_idx];
2704
2705 spin_lock_bh(&vsi->mac_filter_hash_lock);
2706 /* delete addresses from the list */
2707 for (i = 0; i < al->num_elements; i++)
2708 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
2709 ret = I40E_ERR_INVALID_MAC_ADDR;
2710 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2711 goto error_param;
2712 } else {
2713 vf->num_mac--;
2714 }
2715
2716 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2717
2718 /* program the updated filter list */
2719 ret = i40e_sync_vsi_filters(vsi);
2720 if (ret)
2721 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2722 vf->vf_id, ret);
2723
2724error_param:
2725 /* send the response to the VF */
2726 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR,
2727 ret);
2728}
2729
2730/**
2731 * i40e_vc_add_vlan_msg
2732 * @vf: pointer to the VF info
2733 * @msg: pointer to the msg buffer
2734 *
2735 * program guest vlan id
2736 **/
2737static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
2738{
2739 struct virtchnl_vlan_filter_list *vfl =
2740 (struct virtchnl_vlan_filter_list *)msg;
2741 struct i40e_pf *pf = vf->pf;
2742 struct i40e_vsi *vsi = NULL;
2743 i40e_status aq_ret = 0;
2744 int i;
2745
2746 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
2747 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2748 dev_err(&pf->pdev->dev,
2749 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
2750 goto error_param;
2751 }
2752 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2753 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
2754 aq_ret = I40E_ERR_PARAM;
2755 goto error_param;
2756 }
2757
2758 for (i = 0; i < vfl->num_elements; i++) {
2759 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
2760 aq_ret = I40E_ERR_PARAM;
2761 dev_err(&pf->pdev->dev,
2762 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
2763 goto error_param;
2764 }
2765 }
2766 vsi = pf->vsi[vf->lan_vsi_idx];
2767 if (vsi->info.pvid) {
2768 aq_ret = I40E_ERR_PARAM;
2769 goto error_param;
2770 }
2771
2772 i40e_vlan_stripping_enable(vsi);
2773 for (i = 0; i < vfl->num_elements; i++) {
2774 /* add new VLAN filter */
2775 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
2776 if (!ret)
2777 vf->num_vlan++;
2778
2779 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
2780 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
2781 true,
2782 vfl->vlan_id[i],
2783 NULL);
2784 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
2785 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
2786 true,
2787 vfl->vlan_id[i],
2788 NULL);
2789
2790 if (ret)
2791 dev_err(&pf->pdev->dev,
2792 "Unable to add VLAN filter %d for VF %d, error %d\n",
2793 vfl->vlan_id[i], vf->vf_id, ret);
2794 }
2795
2796error_param:
2797 /* send the response to the VF */
2798 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
2799}
2800
2801/**
2802 * i40e_vc_remove_vlan_msg
2803 * @vf: pointer to the VF info
2804 * @msg: pointer to the msg buffer
2805 *
2806 * remove programmed guest vlan id
2807 **/
2808static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
2809{
2810 struct virtchnl_vlan_filter_list *vfl =
2811 (struct virtchnl_vlan_filter_list *)msg;
2812 struct i40e_pf *pf = vf->pf;
2813 struct i40e_vsi *vsi = NULL;
2814 i40e_status aq_ret = 0;
2815 int i;
2816
2817 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2818 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
2819 aq_ret = I40E_ERR_PARAM;
2820 goto error_param;
2821 }
2822
2823 for (i = 0; i < vfl->num_elements; i++) {
2824 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
2825 aq_ret = I40E_ERR_PARAM;
2826 goto error_param;
2827 }
2828 }
2829
2830 vsi = pf->vsi[vf->lan_vsi_idx];
2831 if (vsi->info.pvid) {
2832 if (vfl->num_elements > 1 || vfl->vlan_id[0])
2833 aq_ret = I40E_ERR_PARAM;
2834 goto error_param;
2835 }
2836
2837 for (i = 0; i < vfl->num_elements; i++) {
2838 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
2839 vf->num_vlan--;
2840
2841 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
2842 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
2843 false,
2844 vfl->vlan_id[i],
2845 NULL);
2846 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
2847 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
2848 false,
2849 vfl->vlan_id[i],
2850 NULL);
2851 }
2852
2853error_param:
2854 /* send the response to the VF */
2855 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
2856}
2857
2858/**
2859 * i40e_vc_iwarp_msg
2860 * @vf: pointer to the VF info
2861 * @msg: pointer to the msg buffer
2862 * @msglen: msg length
2863 *
2864 * called from the VF for the iwarp msgs
2865 **/
2866static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2867{
2868 struct i40e_pf *pf = vf->pf;
2869 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
2870 i40e_status aq_ret = 0;
2871
2872 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2873 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
2874 aq_ret = I40E_ERR_PARAM;
2875 goto error_param;
2876 }
2877
2878 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
2879 msg, msglen);
2880
2881error_param:
2882 /* send the response to the VF */
2883 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP,
2884 aq_ret);
2885}
2886
2887/**
2888 * i40e_vc_iwarp_qvmap_msg
2889 * @vf: pointer to the VF info
2890 * @msg: pointer to the msg buffer
2891 * @config: config qvmap or release it
2892 *
2893 * called from the VF for the iwarp msgs
2894 **/
2895static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
2896{
2897 struct virtchnl_iwarp_qvlist_info *qvlist_info =
2898 (struct virtchnl_iwarp_qvlist_info *)msg;
2899 i40e_status aq_ret = 0;
2900
2901 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2902 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
2903 aq_ret = I40E_ERR_PARAM;
2904 goto error_param;
2905 }
2906
2907 if (config) {
2908 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
2909 aq_ret = I40E_ERR_PARAM;
2910 } else {
2911 i40e_release_iwarp_qvlist(vf);
2912 }
2913
2914error_param:
2915 /* send the response to the VF */
2916 return i40e_vc_send_resp_to_vf(vf,
2917 config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP :
2918 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP,
2919 aq_ret);
2920}
2921
2922/**
2923 * i40e_vc_config_rss_key
2924 * @vf: pointer to the VF info
2925 * @msg: pointer to the msg buffer
2926 *
2927 * Configure the VF's RSS key
2928 **/
2929static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
2930{
2931 struct virtchnl_rss_key *vrk =
2932 (struct virtchnl_rss_key *)msg;
2933 struct i40e_pf *pf = vf->pf;
2934 struct i40e_vsi *vsi = NULL;
2935 i40e_status aq_ret = 0;
2936
2937 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2938 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
2939 (vrk->key_len != I40E_HKEY_ARRAY_SIZE)) {
2940 aq_ret = I40E_ERR_PARAM;
2941 goto err;
2942 }
2943
2944 vsi = pf->vsi[vf->lan_vsi_idx];
2945 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
2946err:
2947 /* send the response to the VF */
2948 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
2949 aq_ret);
2950}
2951
2952/**
2953 * i40e_vc_config_rss_lut
2954 * @vf: pointer to the VF info
2955 * @msg: pointer to the msg buffer
2956 *
2957 * Configure the VF's RSS LUT
2958 **/
2959static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
2960{
2961 struct virtchnl_rss_lut *vrl =
2962 (struct virtchnl_rss_lut *)msg;
2963 struct i40e_pf *pf = vf->pf;
2964 struct i40e_vsi *vsi = NULL;
2965 i40e_status aq_ret = 0;
2966 u16 i;
2967
2968 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2969 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
2970 (vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE)) {
2971 aq_ret = I40E_ERR_PARAM;
2972 goto err;
2973 }
2974
2975 for (i = 0; i < vrl->lut_entries; i++)
2976 if (vrl->lut[i] >= vf->num_queue_pairs) {
2977 aq_ret = I40E_ERR_PARAM;
2978 goto err;
2979 }
2980
2981 vsi = pf->vsi[vf->lan_vsi_idx];
2982 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
2983 /* send the response to the VF */
2984err:
2985 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
2986 aq_ret);
2987}
2988
2989/**
2990 * i40e_vc_get_rss_hena
2991 * @vf: pointer to the VF info
2992 * @msg: pointer to the msg buffer
2993 *
2994 * Return the RSS HENA bits allowed by the hardware
2995 **/
2996static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
2997{
2998 struct virtchnl_rss_hena *vrh = NULL;
2999 struct i40e_pf *pf = vf->pf;
3000 i40e_status aq_ret = 0;
3001 int len = 0;
3002
3003 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3004 aq_ret = I40E_ERR_PARAM;
3005 goto err;
3006 }
3007 len = sizeof(struct virtchnl_rss_hena);
3008
3009 vrh = kzalloc(len, GFP_KERNEL);
3010 if (!vrh) {
3011 aq_ret = I40E_ERR_NO_MEMORY;
3012 len = 0;
3013 goto err;
3014 }
3015 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3016err:
3017 /* send the response back to the VF */
3018 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3019 aq_ret, (u8 *)vrh, len);
3020 kfree(vrh);
3021 return aq_ret;
3022}
3023
3024/**
3025 * i40e_vc_set_rss_hena
3026 * @vf: pointer to the VF info
3027 * @msg: pointer to the msg buffer
3028 *
3029 * Set the RSS HENA bits for the VF
3030 **/
3031static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3032{
3033 struct virtchnl_rss_hena *vrh =
3034 (struct virtchnl_rss_hena *)msg;
3035 struct i40e_pf *pf = vf->pf;
3036 struct i40e_hw *hw = &pf->hw;
3037 i40e_status aq_ret = 0;
3038
3039 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3040 aq_ret = I40E_ERR_PARAM;
3041 goto err;
3042 }
3043 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3044 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3045 (u32)(vrh->hena >> 32));
3046
3047 /* send the response to the VF */
3048err:
3049 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3050}
3051
3052/**
3053 * i40e_vc_enable_vlan_stripping
3054 * @vf: pointer to the VF info
3055 * @msg: pointer to the msg buffer
3056 *
3057 * Enable vlan header stripping for the VF
3058 **/
3059static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3060{
3061 i40e_status aq_ret = 0;
3062 struct i40e_vsi *vsi;
3063
3064 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3065 aq_ret = I40E_ERR_PARAM;
3066 goto err;
3067 }
3068
3069 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3070 i40e_vlan_stripping_enable(vsi);
3071
3072 /* send the response to the VF */
3073err:
3074 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3075 aq_ret);
3076}
3077
3078/**
3079 * i40e_vc_disable_vlan_stripping
3080 * @vf: pointer to the VF info
3081 * @msg: pointer to the msg buffer
3082 *
3083 * Disable vlan header stripping for the VF
3084 **/
3085static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3086{
3087 i40e_status aq_ret = 0;
3088 struct i40e_vsi *vsi;
3089
3090 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3091 aq_ret = I40E_ERR_PARAM;
3092 goto err;
3093 }
3094
3095 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3096 i40e_vlan_stripping_disable(vsi);
3097
3098 /* send the response to the VF */
3099err:
3100 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3101 aq_ret);
3102}
3103
3104/**
3105 * i40e_validate_cloud_filter
3106 * @mask: mask for TC filter
3107 * @data: data for TC filter
3108 *
3109 * This function validates cloud filter programmed as TC filter for ADq
3110 **/
3111static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3112 struct virtchnl_filter *tc_filter)
3113{
3114 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3115 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3116 struct i40e_pf *pf = vf->pf;
3117 struct i40e_vsi *vsi = NULL;
3118 struct i40e_mac_filter *f;
3119 struct hlist_node *h;
3120 bool found = false;
3121 int bkt;
3122
3123 if (!tc_filter->action) {
3124 dev_info(&pf->pdev->dev,
3125 "VF %d: Currently ADq doesn't support Drop Action\n",
3126 vf->vf_id);
3127 goto err;
3128 }
3129
3130 /* action_meta is TC number here to which the filter is applied */
3131 if (!tc_filter->action_meta ||
3132 tc_filter->action_meta > I40E_MAX_VF_VSI) {
3133 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3134 vf->vf_id, tc_filter->action_meta);
3135 goto err;
3136 }
3137
3138 /* Check filter if it's programmed for advanced mode or basic mode.
3139 * There are two ADq modes (for VF only),
3140 * 1. Basic mode: intended to allow as many filter options as possible
3141 * to be added to a VF in Non-trusted mode. Main goal is
3142 * to add filters to its own MAC and VLAN id.
3143 * 2. Advanced mode: is for allowing filters to be applied other than
3144 * its own MAC or VLAN. This mode requires the VF to be
3145 * Trusted.
3146 */
3147 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3148 vsi = pf->vsi[vf->lan_vsi_idx];
3149 f = i40e_find_mac(vsi, data.dst_mac);
3150
3151 if (!f) {
3152 dev_info(&pf->pdev->dev,
3153 "Destination MAC %pM doesn't belong to VF %d\n",
3154 data.dst_mac, vf->vf_id);
3155 goto err;
3156 }
3157
3158 if (mask.vlan_id) {
3159 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3160 hlist) {
3161 if (f->vlan == ntohs(data.vlan_id)) {
3162 found = true;
3163 break;
3164 }
3165 }
3166 if (!found) {
3167 dev_info(&pf->pdev->dev,
3168 "VF %d doesn't have any VLAN id %u\n",
3169 vf->vf_id, ntohs(data.vlan_id));
3170 goto err;
3171 }
3172 }
3173 } else {
3174 /* Check if VF is trusted */
3175 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3176 dev_err(&pf->pdev->dev,
3177 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3178 vf->vf_id);
3179 return I40E_ERR_CONFIG;
3180 }
3181 }
3182
3183 if (mask.dst_mac[0] & data.dst_mac[0]) {
3184 if (is_broadcast_ether_addr(data.dst_mac) ||
3185 is_zero_ether_addr(data.dst_mac)) {
3186 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3187 vf->vf_id, data.dst_mac);
3188 goto err;
3189 }
3190 }
3191
3192 if (mask.src_mac[0] & data.src_mac[0]) {
3193 if (is_broadcast_ether_addr(data.src_mac) ||
3194 is_zero_ether_addr(data.src_mac)) {
3195 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3196 vf->vf_id, data.src_mac);
3197 goto err;
3198 }
3199 }
3200
3201 if (mask.dst_port & data.dst_port) {
3202 if (!data.dst_port) {
3203 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3204 vf->vf_id);
3205 goto err;
3206 }
3207 }
3208
3209 if (mask.src_port & data.src_port) {
3210 if (!data.src_port) {
3211 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3212 vf->vf_id);
3213 goto err;
3214 }
3215 }
3216
3217 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3218 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3219 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3220 vf->vf_id);
3221 goto err;
3222 }
3223
3224 if (mask.vlan_id & data.vlan_id) {
3225 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3226 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3227 vf->vf_id);
3228 goto err;
3229 }
3230 }
3231
3232 return I40E_SUCCESS;
3233err:
3234 return I40E_ERR_CONFIG;
3235}
3236
3237/**
3238 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3239 * @vf: pointer to the VF info
3240 * @seid - seid of the vsi it is searching for
3241 **/
3242static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3243{
3244 struct i40e_pf *pf = vf->pf;
3245 struct i40e_vsi *vsi = NULL;
3246 int i;
3247
3248 for (i = 0; i < vf->num_tc ; i++) {
3249 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3250 if (vsi && vsi->seid == seid)
3251 return vsi;
3252 }
3253 return NULL;
3254}
3255
3256/**
3257 * i40e_del_all_cloud_filters
3258 * @vf: pointer to the VF info
3259 *
3260 * This function deletes all cloud filters
3261 **/
3262static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3263{
3264 struct i40e_cloud_filter *cfilter = NULL;
3265 struct i40e_pf *pf = vf->pf;
3266 struct i40e_vsi *vsi = NULL;
3267 struct hlist_node *node;
3268 int ret;
3269
3270 hlist_for_each_entry_safe(cfilter, node,
3271 &vf->cloud_filter_list, cloud_node) {
3272 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3273
3274 if (!vsi) {
3275 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3276 vf->vf_id, cfilter->seid);
3277 continue;
3278 }
3279
3280 if (cfilter->dst_port)
3281 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3282 false);
3283 else
3284 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3285 if (ret)
3286 dev_err(&pf->pdev->dev,
3287 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3288 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3289 i40e_aq_str(&pf->hw,
3290 pf->hw.aq.asq_last_status));
3291
3292 hlist_del(&cfilter->cloud_node);
3293 kfree(cfilter);
3294 vf->num_cloud_filters--;
3295 }
3296}
3297
3298/**
3299 * i40e_vc_del_cloud_filter
3300 * @vf: pointer to the VF info
3301 * @msg: pointer to the msg buffer
3302 *
3303 * This function deletes a cloud filter programmed as TC filter for ADq
3304 **/
3305static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3306{
3307 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3308 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3309 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3310 struct i40e_cloud_filter cfilter, *cf = NULL;
3311 struct i40e_pf *pf = vf->pf;
3312 struct i40e_vsi *vsi = NULL;
3313 struct hlist_node *node;
3314 i40e_status aq_ret = 0;
3315 int i, ret;
3316
3317 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3318 aq_ret = I40E_ERR_PARAM;
3319 goto err;
3320 }
3321
3322 if (!vf->adq_enabled) {
3323 dev_info(&pf->pdev->dev,
3324 "VF %d: ADq not enabled, can't apply cloud filter\n",
3325 vf->vf_id);
3326 aq_ret = I40E_ERR_PARAM;
3327 goto err;
3328 }
3329
3330 if (i40e_validate_cloud_filter(vf, vcf)) {
3331 dev_info(&pf->pdev->dev,
3332 "VF %d: Invalid input, can't apply cloud filter\n",
3333 vf->vf_id);
3334 aq_ret = I40E_ERR_PARAM;
3335 goto err;
3336 }
3337
3338 memset(&cfilter, 0, sizeof(cfilter));
3339 /* parse destination mac address */
3340 for (i = 0; i < ETH_ALEN; i++)
3341 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3342
3343 /* parse source mac address */
3344 for (i = 0; i < ETH_ALEN; i++)
3345 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3346
3347 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3348 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3349 cfilter.src_port = mask.src_port & tcf.src_port;
3350
3351 switch (vcf->flow_type) {
3352 case VIRTCHNL_TCP_V4_FLOW:
3353 cfilter.n_proto = ETH_P_IP;
3354 if (mask.dst_ip[0] & tcf.dst_ip[0])
3355 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3356 ARRAY_SIZE(tcf.dst_ip));
3357 else if (mask.src_ip[0] & tcf.dst_ip[0])
3358 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3359 ARRAY_SIZE(tcf.dst_ip));
3360 break;
3361 case VIRTCHNL_TCP_V6_FLOW:
3362 cfilter.n_proto = ETH_P_IPV6;
3363 if (mask.dst_ip[3] & tcf.dst_ip[3])
3364 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3365 sizeof(cfilter.ip.v6.dst_ip6));
3366 if (mask.src_ip[3] & tcf.src_ip[3])
3367 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3368 sizeof(cfilter.ip.v6.src_ip6));
3369 break;
3370 default:
3371 /* TC filter can be configured based on different combinations
3372 * and in this case IP is not a part of filter config
3373 */
3374 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3375 vf->vf_id);
3376 }
3377
3378 /* get the vsi to which the tc belongs to */
3379 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3380 cfilter.seid = vsi->seid;
3381 cfilter.flags = vcf->field_flags;
3382
3383 /* Deleting TC filter */
3384 if (tcf.dst_port)
3385 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3386 else
3387 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3388 if (ret) {
3389 dev_err(&pf->pdev->dev,
3390 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3391 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3392 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3393 goto err;
3394 }
3395
3396 hlist_for_each_entry_safe(cf, node,
3397 &vf->cloud_filter_list, cloud_node) {
3398 if (cf->seid != cfilter.seid)
3399 continue;
3400 if (mask.dst_port)
3401 if (cfilter.dst_port != cf->dst_port)
3402 continue;
3403 if (mask.dst_mac[0])
3404 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3405 continue;
3406 /* for ipv4 data to be valid, only first byte of mask is set */
3407 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3408 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3409 ARRAY_SIZE(tcf.dst_ip)))
3410 continue;
3411 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3412 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3413 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3414 sizeof(cfilter.ip.v6.src_ip6)))
3415 continue;
3416 if (mask.vlan_id)
3417 if (cfilter.vlan_id != cf->vlan_id)
3418 continue;
3419
3420 hlist_del(&cf->cloud_node);
3421 kfree(cf);
3422 vf->num_cloud_filters--;
3423 }
3424
3425err:
3426 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3427 aq_ret);
3428}
3429
3430/**
3431 * i40e_vc_add_cloud_filter
3432 * @vf: pointer to the VF info
3433 * @msg: pointer to the msg buffer
3434 *
3435 * This function adds a cloud filter programmed as TC filter for ADq
3436 **/
3437static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3438{
3439 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3440 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3441 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3442 struct i40e_cloud_filter *cfilter = NULL;
3443 struct i40e_pf *pf = vf->pf;
3444 struct i40e_vsi *vsi = NULL;
3445 i40e_status aq_ret = 0;
3446 int i, ret;
3447
3448 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3449 aq_ret = I40E_ERR_PARAM;
3450 goto err_out;
3451 }
3452
3453 if (!vf->adq_enabled) {
3454 dev_info(&pf->pdev->dev,
3455 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3456 vf->vf_id);
3457 aq_ret = I40E_ERR_PARAM;
3458 goto err_out;
3459 }
3460
3461 if (i40e_validate_cloud_filter(vf, vcf)) {
3462 dev_info(&pf->pdev->dev,
3463 "VF %d: Invalid input/s, can't apply cloud filter\n",
3464 vf->vf_id);
3465 aq_ret = I40E_ERR_PARAM;
3466 goto err_out;
3467 }
3468
3469 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3470 if (!cfilter)
3471 return -ENOMEM;
3472
3473 /* parse destination mac address */
3474 for (i = 0; i < ETH_ALEN; i++)
3475 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3476
3477 /* parse source mac address */
3478 for (i = 0; i < ETH_ALEN; i++)
3479 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3480
3481 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3482 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3483 cfilter->src_port = mask.src_port & tcf.src_port;
3484
3485 switch (vcf->flow_type) {
3486 case VIRTCHNL_TCP_V4_FLOW:
3487 cfilter->n_proto = ETH_P_IP;
3488 if (mask.dst_ip[0] & tcf.dst_ip[0])
3489 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3490 ARRAY_SIZE(tcf.dst_ip));
3491 else if (mask.src_ip[0] & tcf.dst_ip[0])
3492 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3493 ARRAY_SIZE(tcf.dst_ip));
3494 break;
3495 case VIRTCHNL_TCP_V6_FLOW:
3496 cfilter->n_proto = ETH_P_IPV6;
3497 if (mask.dst_ip[3] & tcf.dst_ip[3])
3498 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3499 sizeof(cfilter->ip.v6.dst_ip6));
3500 if (mask.src_ip[3] & tcf.src_ip[3])
3501 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3502 sizeof(cfilter->ip.v6.src_ip6));
3503 break;
3504 default:
3505 /* TC filter can be configured based on different combinations
3506 * and in this case IP is not a part of filter config
3507 */
3508 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3509 vf->vf_id);
3510 }
3511
3512 /* get the VSI to which the TC belongs to */
3513 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3514 cfilter->seid = vsi->seid;
3515 cfilter->flags = vcf->field_flags;
3516
3517 /* Adding cloud filter programmed as TC filter */
3518 if (tcf.dst_port)
3519 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3520 else
3521 ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3522 if (ret) {
3523 dev_err(&pf->pdev->dev,
3524 "VF %d: Failed to add cloud filter, err %s aq_err %s\n",
3525 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3526 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3527 goto err_free;
3528 }
3529
3530 INIT_HLIST_NODE(&cfilter->cloud_node);
3531 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3532 /* release the pointer passing it to the collection */
3533 cfilter = NULL;
3534 vf->num_cloud_filters++;
3535err_free:
3536 kfree(cfilter);
3537err_out:
3538 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
3539 aq_ret);
3540}
3541
3542/**
3543 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
3544 * @vf: pointer to the VF info
3545 * @msg: pointer to the msg buffer
3546 **/
3547static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
3548{
3549 struct virtchnl_tc_info *tci =
3550 (struct virtchnl_tc_info *)msg;
3551 struct i40e_pf *pf = vf->pf;
3552 struct i40e_link_status *ls = &pf->hw.phy.link_info;
3553 int i, adq_request_qps = 0;
3554 i40e_status aq_ret = 0;
3555 u64 speed = 0;
3556
3557 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3558 aq_ret = I40E_ERR_PARAM;
3559 goto err;
3560 }
3561
3562 /* ADq cannot be applied if spoof check is ON */
3563 if (vf->spoofchk) {
3564 dev_err(&pf->pdev->dev,
3565 "Spoof check is ON, turn it OFF to enable ADq\n");
3566 aq_ret = I40E_ERR_PARAM;
3567 goto err;
3568 }
3569
3570 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
3571 dev_err(&pf->pdev->dev,
3572 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
3573 vf->vf_id);
3574 aq_ret = I40E_ERR_PARAM;
3575 goto err;
3576 }
3577
3578 /* max number of traffic classes for VF currently capped at 4 */
3579 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
3580 dev_err(&pf->pdev->dev,
3581 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
3582 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
3583 aq_ret = I40E_ERR_PARAM;
3584 goto err;
3585 }
3586
3587 /* validate queues for each TC */
3588 for (i = 0; i < tci->num_tc; i++)
3589 if (!tci->list[i].count ||
3590 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
3591 dev_err(&pf->pdev->dev,
3592 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
3593 vf->vf_id, i, tci->list[i].count,
3594 I40E_DEFAULT_QUEUES_PER_VF);
3595 aq_ret = I40E_ERR_PARAM;
3596 goto err;
3597 }
3598
3599 /* need Max VF queues but already have default number of queues */
3600 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
3601
3602 if (pf->queues_left < adq_request_qps) {
3603 dev_err(&pf->pdev->dev,
3604 "No queues left to allocate to VF %d\n",
3605 vf->vf_id);
3606 aq_ret = I40E_ERR_PARAM;
3607 goto err;
3608 } else {
3609 /* we need to allocate max VF queues to enable ADq so as to
3610 * make sure ADq enabled VF always gets back queues when it
3611 * goes through a reset.
3612 */
3613 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
3614 }
3615
3616 /* get link speed in MB to validate rate limit */
3617 switch (ls->link_speed) {
3618 case VIRTCHNL_LINK_SPEED_100MB:
3619 speed = SPEED_100;
3620 break;
3621 case VIRTCHNL_LINK_SPEED_1GB:
3622 speed = SPEED_1000;
3623 break;
3624 case VIRTCHNL_LINK_SPEED_10GB:
3625 speed = SPEED_10000;
3626 break;
3627 case VIRTCHNL_LINK_SPEED_20GB:
3628 speed = SPEED_20000;
3629 break;
3630 case VIRTCHNL_LINK_SPEED_25GB:
3631 speed = SPEED_25000;
3632 break;
3633 case VIRTCHNL_LINK_SPEED_40GB:
3634 speed = SPEED_40000;
3635 break;
3636 default:
3637 dev_err(&pf->pdev->dev,
3638 "Cannot detect link speed\n");
3639 aq_ret = I40E_ERR_PARAM;
3640 goto err;
3641 }
3642
3643 /* parse data from the queue channel info */
3644 vf->num_tc = tci->num_tc;
3645 for (i = 0; i < vf->num_tc; i++) {
3646 if (tci->list[i].max_tx_rate) {
3647 if (tci->list[i].max_tx_rate > speed) {
3648 dev_err(&pf->pdev->dev,
3649 "Invalid max tx rate %llu specified for VF %d.",
3650 tci->list[i].max_tx_rate,
3651 vf->vf_id);
3652 aq_ret = I40E_ERR_PARAM;
3653 goto err;
3654 } else {
3655 vf->ch[i].max_tx_rate =
3656 tci->list[i].max_tx_rate;
3657 }
3658 }
3659 vf->ch[i].num_qps = tci->list[i].count;
3660 }
3661
3662 /* set this flag only after making sure all inputs are sane */
3663 vf->adq_enabled = true;
3664 /* num_req_queues is set when user changes number of queues via ethtool
3665 * and this causes issue for default VSI(which depends on this variable)
3666 * when ADq is enabled, hence reset it.
3667 */
3668 vf->num_req_queues = 0;
3669
3670 /* reset the VF in order to allocate resources */
3671 i40e_vc_notify_vf_reset(vf);
3672 i40e_reset_vf(vf, false);
3673
3674 return I40E_SUCCESS;
3675
3676 /* send the response to the VF */
3677err:
3678 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
3679 aq_ret);
3680}
3681
3682/**
3683 * i40e_vc_del_qch_msg
3684 * @vf: pointer to the VF info
3685 * @msg: pointer to the msg buffer
3686 **/
3687static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
3688{
3689 struct i40e_pf *pf = vf->pf;
3690 i40e_status aq_ret = 0;
3691
3692 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
3693 aq_ret = I40E_ERR_PARAM;
3694 goto err;
3695 }
3696
3697 if (vf->adq_enabled) {
3698 i40e_del_all_cloud_filters(vf);
3699 i40e_del_qch(vf);
3700 vf->adq_enabled = false;
3701 vf->num_tc = 0;
3702 dev_info(&pf->pdev->dev,
3703 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
3704 vf->vf_id);
3705 } else {
3706 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
3707 vf->vf_id);
3708 aq_ret = I40E_ERR_PARAM;
3709 }
3710
3711 /* reset the VF in order to allocate resources */
3712 i40e_vc_notify_vf_reset(vf);
3713 i40e_reset_vf(vf, false);
3714
3715 return I40E_SUCCESS;
3716
3717err:
3718 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
3719 aq_ret);
3720}
3721
3722/**
3723 * i40e_vc_process_vf_msg
3724 * @pf: pointer to the PF structure
3725 * @vf_id: source VF id
3726 * @v_opcode: operation code
3727 * @v_retval: unused return value code
3728 * @msg: pointer to the msg buffer
3729 * @msglen: msg length
3730 *
3731 * called from the common aeq/arq handler to
3732 * process request from VF
3733 **/
3734int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
3735 u32 __always_unused v_retval, u8 *msg, u16 msglen)
3736{
3737 struct i40e_hw *hw = &pf->hw;
3738 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
3739 struct i40e_vf *vf;
3740 int ret;
3741
3742 pf->vf_aq_requests++;
3743 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
3744 return -EINVAL;
3745 vf = &(pf->vf[local_vf_id]);
3746
3747 /* Check if VF is disabled. */
3748 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
3749 return I40E_ERR_PARAM;
3750
3751 /* perform basic checks on the msg */
3752 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
3753
3754 if (ret) {
3755 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
3756 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
3757 local_vf_id, v_opcode, msglen);
3758 switch (ret) {
3759 case VIRTCHNL_STATUS_ERR_PARAM:
3760 return -EPERM;
3761 default:
3762 return -EINVAL;
3763 }
3764 }
3765
3766 switch (v_opcode) {
3767 case VIRTCHNL_OP_VERSION:
3768 ret = i40e_vc_get_version_msg(vf, msg);
3769 break;
3770 case VIRTCHNL_OP_GET_VF_RESOURCES:
3771 ret = i40e_vc_get_vf_resources_msg(vf, msg);
3772 i40e_vc_notify_vf_link_state(vf);
3773 break;
3774 case VIRTCHNL_OP_RESET_VF:
3775 i40e_vc_reset_vf_msg(vf);
3776 ret = 0;
3777 break;
3778 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
3779 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
3780 break;
3781 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
3782 ret = i40e_vc_config_queues_msg(vf, msg);
3783 break;
3784 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
3785 ret = i40e_vc_config_irq_map_msg(vf, msg);
3786 break;
3787 case VIRTCHNL_OP_ENABLE_QUEUES:
3788 ret = i40e_vc_enable_queues_msg(vf, msg);
3789 i40e_vc_notify_vf_link_state(vf);
3790 break;
3791 case VIRTCHNL_OP_DISABLE_QUEUES:
3792 ret = i40e_vc_disable_queues_msg(vf, msg);
3793 break;
3794 case VIRTCHNL_OP_ADD_ETH_ADDR:
3795 ret = i40e_vc_add_mac_addr_msg(vf, msg);
3796 break;
3797 case VIRTCHNL_OP_DEL_ETH_ADDR:
3798 ret = i40e_vc_del_mac_addr_msg(vf, msg);
3799 break;
3800 case VIRTCHNL_OP_ADD_VLAN:
3801 ret = i40e_vc_add_vlan_msg(vf, msg);
3802 break;
3803 case VIRTCHNL_OP_DEL_VLAN:
3804 ret = i40e_vc_remove_vlan_msg(vf, msg);
3805 break;
3806 case VIRTCHNL_OP_GET_STATS:
3807 ret = i40e_vc_get_stats_msg(vf, msg);
3808 break;
3809 case VIRTCHNL_OP_IWARP:
3810 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
3811 break;
3812 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
3813 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, true);
3814 break;
3815 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
3816 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, false);
3817 break;
3818 case VIRTCHNL_OP_CONFIG_RSS_KEY:
3819 ret = i40e_vc_config_rss_key(vf, msg);
3820 break;
3821 case VIRTCHNL_OP_CONFIG_RSS_LUT:
3822 ret = i40e_vc_config_rss_lut(vf, msg);
3823 break;
3824 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
3825 ret = i40e_vc_get_rss_hena(vf, msg);
3826 break;
3827 case VIRTCHNL_OP_SET_RSS_HENA:
3828 ret = i40e_vc_set_rss_hena(vf, msg);
3829 break;
3830 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
3831 ret = i40e_vc_enable_vlan_stripping(vf, msg);
3832 break;
3833 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
3834 ret = i40e_vc_disable_vlan_stripping(vf, msg);
3835 break;
3836 case VIRTCHNL_OP_REQUEST_QUEUES:
3837 ret = i40e_vc_request_queues_msg(vf, msg);
3838 break;
3839 case VIRTCHNL_OP_ENABLE_CHANNELS:
3840 ret = i40e_vc_add_qch_msg(vf, msg);
3841 break;
3842 case VIRTCHNL_OP_DISABLE_CHANNELS:
3843 ret = i40e_vc_del_qch_msg(vf, msg);
3844 break;
3845 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
3846 ret = i40e_vc_add_cloud_filter(vf, msg);
3847 break;
3848 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
3849 ret = i40e_vc_del_cloud_filter(vf, msg);
3850 break;
3851 case VIRTCHNL_OP_UNKNOWN:
3852 default:
3853 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
3854 v_opcode, local_vf_id);
3855 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
3856 I40E_ERR_NOT_IMPLEMENTED);
3857 break;
3858 }
3859
3860 return ret;
3861}
3862
3863/**
3864 * i40e_vc_process_vflr_event
3865 * @pf: pointer to the PF structure
3866 *
3867 * called from the vlfr irq handler to
3868 * free up VF resources and state variables
3869 **/
3870int i40e_vc_process_vflr_event(struct i40e_pf *pf)
3871{
3872 struct i40e_hw *hw = &pf->hw;
3873 u32 reg, reg_idx, bit_idx;
3874 struct i40e_vf *vf;
3875 int vf_id;
3876
3877 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
3878 return 0;
3879
3880 /* Re-enable the VFLR interrupt cause here, before looking for which
3881 * VF got reset. Otherwise, if another VF gets a reset while the
3882 * first one is being processed, that interrupt will be lost, and
3883 * that VF will be stuck in reset forever.
3884 */
3885 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
3886 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
3887 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
3888 i40e_flush(hw);
3889
3890 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
3891 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
3892 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
3893 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
3894 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
3895 vf = &pf->vf[vf_id];
3896 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
3897 if (reg & BIT(bit_idx))
3898 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
3899 i40e_reset_vf(vf, true);
3900 }
3901
3902 return 0;
3903}
3904
3905/**
3906 * i40e_validate_vf
3907 * @pf: the physical function
3908 * @vf_id: VF identifier
3909 *
3910 * Check that the VF is enabled and the VSI exists.
3911 *
3912 * Returns 0 on success, negative on failure
3913 **/
3914static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
3915{
3916 struct i40e_vsi *vsi;
3917 struct i40e_vf *vf;
3918 int ret = 0;
3919
3920 if (vf_id >= pf->num_alloc_vfs) {
3921 dev_err(&pf->pdev->dev,
3922 "Invalid VF Identifier %d\n", vf_id);
3923 ret = -EINVAL;
3924 goto err_out;
3925 }
3926 vf = &pf->vf[vf_id];
3927 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
3928 if (!vsi)
3929 ret = -EINVAL;
3930err_out:
3931 return ret;
3932}
3933
3934/**
3935 * i40e_ndo_set_vf_mac
3936 * @netdev: network interface device structure
3937 * @vf_id: VF identifier
3938 * @mac: mac address
3939 *
3940 * program VF mac address
3941 **/
3942int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
3943{
3944 struct i40e_netdev_priv *np = netdev_priv(netdev);
3945 struct i40e_vsi *vsi = np->vsi;
3946 struct i40e_pf *pf = vsi->back;
3947 struct i40e_mac_filter *f;
3948 struct i40e_vf *vf;
3949 int ret = 0;
3950 struct hlist_node *h;
3951 int bkt;
3952 u8 i;
3953
3954 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
3955 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
3956 return -EAGAIN;
3957 }
3958
3959 /* validate the request */
3960 ret = i40e_validate_vf(pf, vf_id);
3961 if (ret)
3962 goto error_param;
3963
3964 vf = &pf->vf[vf_id];
3965 vsi = pf->vsi[vf->lan_vsi_idx];
3966
3967 /* When the VF is resetting wait until it is done.
3968 * It can take up to 200 milliseconds,
3969 * but wait for up to 300 milliseconds to be safe.
3970 * If the VF is indeed in reset, the vsi pointer has
3971 * to show on the newly loaded vsi under pf->vsi[id].
3972 */
3973 for (i = 0; i < 15; i++) {
3974 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
3975 if (i > 0)
3976 vsi = pf->vsi[vf->lan_vsi_idx];
3977 break;
3978 }
3979 msleep(20);
3980 }
3981 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
3982 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
3983 vf_id);
3984 ret = -EAGAIN;
3985 goto error_param;
3986 }
3987
3988 if (is_multicast_ether_addr(mac)) {
3989 dev_err(&pf->pdev->dev,
3990 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
3991 ret = -EINVAL;
3992 goto error_param;
3993 }
3994
3995 /* Lock once because below invoked function add/del_filter requires
3996 * mac_filter_hash_lock to be held
3997 */
3998 spin_lock_bh(&vsi->mac_filter_hash_lock);
3999
4000 /* delete the temporary mac address */
4001 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4002 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4003
4004 /* Delete all the filters for this VSI - we're going to kill it
4005 * anyway.
4006 */
4007 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4008 __i40e_del_filter(vsi, f);
4009
4010 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4011
4012 /* program mac filter */
4013 if (i40e_sync_vsi_filters(vsi)) {
4014 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4015 ret = -EIO;
4016 goto error_param;
4017 }
4018 ether_addr_copy(vf->default_lan_addr.addr, mac);
4019
4020 if (is_zero_ether_addr(mac)) {
4021 vf->pf_set_mac = false;
4022 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4023 } else {
4024 vf->pf_set_mac = true;
4025 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4026 mac, vf_id);
4027 }
4028
4029 /* Force the VF interface down so it has to bring up with new MAC
4030 * address
4031 */
4032 i40e_vc_disable_vf(vf);
4033 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4034
4035error_param:
4036 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4037 return ret;
4038}
4039
4040/**
4041 * i40e_vsi_has_vlans - True if VSI has configured VLANs
4042 * @vsi: pointer to the vsi
4043 *
4044 * Check if a VSI has configured any VLANs. False if we have a port VLAN or if
4045 * we have no configured VLANs. Do not call while holding the
4046 * mac_filter_hash_lock.
4047 */
4048static bool i40e_vsi_has_vlans(struct i40e_vsi *vsi)
4049{
4050 bool have_vlans;
4051
4052 /* If we have a port VLAN, then the VSI cannot have any VLANs
4053 * configured, as all MAC/VLAN filters will be assigned to the PVID.
4054 */
4055 if (vsi->info.pvid)
4056 return false;
4057
4058 /* Since we don't have a PVID, we know that if the device is in VLAN
4059 * mode it must be because of a VLAN filter configured on this VSI.
4060 */
4061 spin_lock_bh(&vsi->mac_filter_hash_lock);
4062 have_vlans = i40e_is_vsi_in_vlan(vsi);
4063 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4064
4065 return have_vlans;
4066}
4067
4068/**
4069 * i40e_ndo_set_vf_port_vlan
4070 * @netdev: network interface device structure
4071 * @vf_id: VF identifier
4072 * @vlan_id: mac address
4073 * @qos: priority setting
4074 * @vlan_proto: vlan protocol
4075 *
4076 * program VF vlan id and/or qos
4077 **/
4078int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4079 u16 vlan_id, u8 qos, __be16 vlan_proto)
4080{
4081 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4082 struct i40e_netdev_priv *np = netdev_priv(netdev);
4083 bool allmulti = false, alluni = false;
4084 struct i40e_pf *pf = np->vsi->back;
4085 struct i40e_vsi *vsi;
4086 struct i40e_vf *vf;
4087 int ret = 0;
4088
4089 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4090 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4091 return -EAGAIN;
4092 }
4093
4094 /* validate the request */
4095 ret = i40e_validate_vf(pf, vf_id);
4096 if (ret)
4097 goto error_pvid;
4098
4099 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4100 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4101 ret = -EINVAL;
4102 goto error_pvid;
4103 }
4104
4105 if (vlan_proto != htons(ETH_P_8021Q)) {
4106 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4107 ret = -EPROTONOSUPPORT;
4108 goto error_pvid;
4109 }
4110
4111 vf = &pf->vf[vf_id];
4112 vsi = pf->vsi[vf->lan_vsi_idx];
4113 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4114 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4115 vf_id);
4116 ret = -EAGAIN;
4117 goto error_pvid;
4118 }
4119
4120 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4121 /* duplicate request, so just return success */
4122 goto error_pvid;
4123
4124 if (i40e_vsi_has_vlans(vsi)) {
4125 dev_err(&pf->pdev->dev,
4126 "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",
4127 vf_id);
4128 /* Administrator Error - knock the VF offline until he does
4129 * the right thing by reconfiguring his network correctly
4130 * and then reloading the VF driver.
4131 */
4132 i40e_vc_disable_vf(vf);
4133 /* During reset the VF got a new VSI, so refresh the pointer. */
4134 vsi = pf->vsi[vf->lan_vsi_idx];
4135 }
4136
4137 /* Locked once because multiple functions below iterate list */
4138 spin_lock_bh(&vsi->mac_filter_hash_lock);
4139
4140 /* Check for condition where there was already a port VLAN ID
4141 * filter set and now it is being deleted by setting it to zero.
4142 * Additionally check for the condition where there was a port
4143 * VLAN but now there is a new and different port VLAN being set.
4144 * Before deleting all the old VLAN filters we must add new ones
4145 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4146 * MAC addresses deleted.
4147 */
4148 if ((!(vlan_id || qos) ||
4149 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4150 vsi->info.pvid) {
4151 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4152 if (ret) {
4153 dev_info(&vsi->back->pdev->dev,
4154 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4155 vsi->back->hw.aq.asq_last_status);
4156 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4157 goto error_pvid;
4158 }
4159 }
4160
4161 if (vsi->info.pvid) {
4162 /* remove all filters on the old VLAN */
4163 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4164 VLAN_VID_MASK));
4165 }
4166
4167 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4168
4169 /* disable promisc modes in case they were enabled */
4170 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4171 allmulti, alluni);
4172 if (ret) {
4173 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4174 goto error_pvid;
4175 }
4176
4177 if (vlan_id || qos)
4178 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4179 else
4180 i40e_vsi_remove_pvid(vsi);
4181 spin_lock_bh(&vsi->mac_filter_hash_lock);
4182
4183 if (vlan_id) {
4184 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4185 vlan_id, qos, vf_id);
4186
4187 /* add new VLAN filter for each MAC */
4188 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4189 if (ret) {
4190 dev_info(&vsi->back->pdev->dev,
4191 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4192 vsi->back->hw.aq.asq_last_status);
4193 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4194 goto error_pvid;
4195 }
4196
4197 /* remove the previously added non-VLAN MAC filters */
4198 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4199 }
4200
4201 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4202
4203 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4204 alluni = true;
4205
4206 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4207 allmulti = true;
4208
4209 /* Schedule the worker thread to take care of applying changes */
4210 i40e_service_event_schedule(vsi->back);
4211
4212 if (ret) {
4213 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4214 goto error_pvid;
4215 }
4216
4217 /* The Port VLAN needs to be saved across resets the same as the
4218 * default LAN MAC address.
4219 */
4220 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4221
4222 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4223 if (ret) {
4224 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4225 goto error_pvid;
4226 }
4227
4228 ret = 0;
4229
4230error_pvid:
4231 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4232 return ret;
4233}
4234
4235/**
4236 * i40e_ndo_set_vf_bw
4237 * @netdev: network interface device structure
4238 * @vf_id: VF identifier
4239 * @min_tx_rate: Minimum Tx rate
4240 * @max_tx_rate: Maximum Tx rate
4241 *
4242 * configure VF Tx rate
4243 **/
4244int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4245 int max_tx_rate)
4246{
4247 struct i40e_netdev_priv *np = netdev_priv(netdev);
4248 struct i40e_pf *pf = np->vsi->back;
4249 struct i40e_vsi *vsi;
4250 struct i40e_vf *vf;
4251 int ret = 0;
4252
4253 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4254 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4255 return -EAGAIN;
4256 }
4257
4258 /* validate the request */
4259 ret = i40e_validate_vf(pf, vf_id);
4260 if (ret)
4261 goto error;
4262
4263 if (min_tx_rate) {
4264 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4265 min_tx_rate, vf_id);
4266 ret = -EINVAL;
4267 goto error;
4268 }
4269
4270 vf = &pf->vf[vf_id];
4271 vsi = pf->vsi[vf->lan_vsi_idx];
4272 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4273 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4274 vf_id);
4275 ret = -EAGAIN;
4276 goto error;
4277 }
4278
4279 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4280 if (ret)
4281 goto error;
4282
4283 vf->tx_rate = max_tx_rate;
4284error:
4285 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4286 return ret;
4287}
4288
4289/**
4290 * i40e_ndo_get_vf_config
4291 * @netdev: network interface device structure
4292 * @vf_id: VF identifier
4293 * @ivi: VF configuration structure
4294 *
4295 * return VF configuration
4296 **/
4297int i40e_ndo_get_vf_config(struct net_device *netdev,
4298 int vf_id, struct ifla_vf_info *ivi)
4299{
4300 struct i40e_netdev_priv *np = netdev_priv(netdev);
4301 struct i40e_vsi *vsi = np->vsi;
4302 struct i40e_pf *pf = vsi->back;
4303 struct i40e_vf *vf;
4304 int ret = 0;
4305
4306 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4307 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4308 return -EAGAIN;
4309 }
4310
4311 /* validate the request */
4312 ret = i40e_validate_vf(pf, vf_id);
4313 if (ret)
4314 goto error_param;
4315
4316 vf = &pf->vf[vf_id];
4317 /* first vsi is always the LAN vsi */
4318 vsi = pf->vsi[vf->lan_vsi_idx];
4319 if (!vsi) {
4320 ret = -ENOENT;
4321 goto error_param;
4322 }
4323
4324 ivi->vf = vf_id;
4325
4326 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4327
4328 ivi->max_tx_rate = vf->tx_rate;
4329 ivi->min_tx_rate = 0;
4330 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
4331 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
4332 I40E_VLAN_PRIORITY_SHIFT;
4333 if (vf->link_forced == false)
4334 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4335 else if (vf->link_up == true)
4336 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4337 else
4338 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4339 ivi->spoofchk = vf->spoofchk;
4340 ivi->trusted = vf->trusted;
4341 ret = 0;
4342
4343error_param:
4344 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4345 return ret;
4346}
4347
4348/**
4349 * i40e_ndo_set_vf_link_state
4350 * @netdev: network interface device structure
4351 * @vf_id: VF identifier
4352 * @link: required link state
4353 *
4354 * Set the link state of a specified VF, regardless of physical link state
4355 **/
4356int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4357{
4358 struct i40e_netdev_priv *np = netdev_priv(netdev);
4359 struct i40e_pf *pf = np->vsi->back;
4360 struct virtchnl_pf_event pfe;
4361 struct i40e_hw *hw = &pf->hw;
4362 struct i40e_vf *vf;
4363 int abs_vf_id;
4364 int ret = 0;
4365
4366 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4367 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4368 return -EAGAIN;
4369 }
4370
4371 /* validate the request */
4372 if (vf_id >= pf->num_alloc_vfs) {
4373 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4374 ret = -EINVAL;
4375 goto error_out;
4376 }
4377
4378 vf = &pf->vf[vf_id];
4379 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4380
4381 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4382 pfe.severity = PF_EVENT_SEVERITY_INFO;
4383
4384 switch (link) {
4385 case IFLA_VF_LINK_STATE_AUTO:
4386 vf->link_forced = false;
4387 pfe.event_data.link_event.link_status =
4388 pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
4389 pfe.event_data.link_event.link_speed =
4390 (enum virtchnl_link_speed)
4391 pf->hw.phy.link_info.link_speed;
4392 break;
4393 case IFLA_VF_LINK_STATE_ENABLE:
4394 vf->link_forced = true;
4395 vf->link_up = true;
4396 pfe.event_data.link_event.link_status = true;
4397 pfe.event_data.link_event.link_speed = VIRTCHNL_LINK_SPEED_40GB;
4398 break;
4399 case IFLA_VF_LINK_STATE_DISABLE:
4400 vf->link_forced = true;
4401 vf->link_up = false;
4402 pfe.event_data.link_event.link_status = false;
4403 pfe.event_data.link_event.link_speed = 0;
4404 break;
4405 default:
4406 ret = -EINVAL;
4407 goto error_out;
4408 }
4409 /* Notify the VF of its new link state */
4410 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4411 0, (u8 *)&pfe, sizeof(pfe), NULL);
4412
4413error_out:
4414 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4415 return ret;
4416}
4417
4418/**
4419 * i40e_ndo_set_vf_spoofchk
4420 * @netdev: network interface device structure
4421 * @vf_id: VF identifier
4422 * @enable: flag to enable or disable feature
4423 *
4424 * Enable or disable VF spoof checking
4425 **/
4426int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4427{
4428 struct i40e_netdev_priv *np = netdev_priv(netdev);
4429 struct i40e_vsi *vsi = np->vsi;
4430 struct i40e_pf *pf = vsi->back;
4431 struct i40e_vsi_context ctxt;
4432 struct i40e_hw *hw = &pf->hw;
4433 struct i40e_vf *vf;
4434 int ret = 0;
4435
4436 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4437 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4438 return -EAGAIN;
4439 }
4440
4441 /* validate the request */
4442 if (vf_id >= pf->num_alloc_vfs) {
4443 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4444 ret = -EINVAL;
4445 goto out;
4446 }
4447
4448 vf = &(pf->vf[vf_id]);
4449 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4450 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4451 vf_id);
4452 ret = -EAGAIN;
4453 goto out;
4454 }
4455
4456 if (enable == vf->spoofchk)
4457 goto out;
4458
4459 vf->spoofchk = enable;
4460 memset(&ctxt, 0, sizeof(ctxt));
4461 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4462 ctxt.pf_num = pf->hw.pf_id;
4463 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4464 if (enable)
4465 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4466 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4467 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4468 if (ret) {
4469 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4470 ret);
4471 ret = -EIO;
4472 }
4473out:
4474 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4475 return ret;
4476}
4477
4478/**
4479 * i40e_ndo_set_vf_trust
4480 * @netdev: network interface device structure of the pf
4481 * @vf_id: VF identifier
4482 * @setting: trust setting
4483 *
4484 * Enable or disable VF trust setting
4485 **/
4486int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4487{
4488 struct i40e_netdev_priv *np = netdev_priv(netdev);
4489 struct i40e_pf *pf = np->vsi->back;
4490 struct i40e_vf *vf;
4491 int ret = 0;
4492
4493 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4494 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4495 return -EAGAIN;
4496 }
4497
4498 /* validate the request */
4499 if (vf_id >= pf->num_alloc_vfs) {
4500 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4501 ret = -EINVAL;
4502 goto out;
4503 }
4504
4505 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4506 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4507 ret = -EINVAL;
4508 goto out;
4509 }
4510
4511 vf = &pf->vf[vf_id];
4512
4513 if (setting == vf->trusted)
4514 goto out;
4515
4516 vf->trusted = setting;
4517 i40e_vc_disable_vf(vf);
4518 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4519 vf_id, setting ? "" : "un");
4520
4521 if (vf->adq_enabled) {
4522 if (!vf->trusted) {
4523 dev_info(&pf->pdev->dev,
4524 "VF %u no longer Trusted, deleting all cloud filters\n",
4525 vf_id);
4526 i40e_del_all_cloud_filters(vf);
4527 }
4528 }
4529
4530out:
4531 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4532 return ret;
4533}