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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / net / ethernet / intel / i40e / i40e_virtchnl_pf.c
blobdfa785e39458dbeea4e028b070d5f16246cd8b1a
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4 #include "i40e.h"
5 #include "i40e_lan_hmc.h"
6 #include "i40e_virtchnl_pf.h"
7
8 /*********************notification routines***********************/
9
10 /**
11 * i40e_vc_vf_broadcast
12 * @pf: pointer to the PF structure
13 * @v_opcode: operation code
14 * @v_retval: return value
15 * @msg: pointer to the msg buffer
16 * @msglen: msg length
17 *
18 * send a message to all VFs on a given PF
19 **/
20 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
21 enum virtchnl_ops v_opcode,
22 int v_retval, u8 *msg,
23 u16 msglen)
24 {
25 struct i40e_hw *hw = &pf->hw;
26 struct i40e_vf *vf = pf->vf;
27 int i;
28
29 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
30 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
31 /* Not all vfs are enabled so skip the ones that are not */
32 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
33 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
34 continue;
35
36 /* Ignore return value on purpose - a given VF may fail, but
37 * we need to keep going and send to all of them
38 */
39 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
40 msg, msglen, NULL);
41 }
42 }
43
44 /**
45 * i40e_vc_link_speed2mbps
46 * converts i40e_aq_link_speed to integer value of Mbps
47 * @link_speed: the speed to convert
48 *
49 * return the speed as direct value of Mbps.
50 **/
51 static u32
52 i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)
53 {
54 switch (link_speed) {
55 case I40E_LINK_SPEED_100MB:
56 return SPEED_100;
57 case I40E_LINK_SPEED_1GB:
58 return SPEED_1000;
59 case I40E_LINK_SPEED_2_5GB:
60 return SPEED_2500;
61 case I40E_LINK_SPEED_5GB:
62 return SPEED_5000;
63 case I40E_LINK_SPEED_10GB:
64 return SPEED_10000;
65 case I40E_LINK_SPEED_20GB:
66 return SPEED_20000;
67 case I40E_LINK_SPEED_25GB:
68 return SPEED_25000;
69 case I40E_LINK_SPEED_40GB:
70 return SPEED_40000;
71 case I40E_LINK_SPEED_UNKNOWN:
72 return SPEED_UNKNOWN;
73 }
74 return SPEED_UNKNOWN;
75 }
76
77 /**
78 * i40e_set_vf_link_state
79 * @vf: pointer to the VF structure
80 * @pfe: pointer to PF event structure
81 * @ls: pointer to link status structure
82 *
83 * set a link state on a single vf
84 **/
85 static void i40e_set_vf_link_state(struct i40e_vf *vf,
86 struct virtchnl_pf_event *pfe, struct i40e_link_status *ls)
87 {
88 u8 link_status = ls->link_info & I40E_AQ_LINK_UP;
89
90 if (vf->link_forced)
91 link_status = vf->link_up;
92
93 if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
94 pfe->event_data.link_event_adv.link_speed = link_status ?
95 i40e_vc_link_speed2mbps(ls->link_speed) : 0;
96 pfe->event_data.link_event_adv.link_status = link_status;
97 } else {
98 pfe->event_data.link_event.link_speed = link_status ?
99 i40e_virtchnl_link_speed(ls->link_speed) : 0;
100 pfe->event_data.link_event.link_status = link_status;
101 }
102 }
103
104 /**
105 * i40e_vc_notify_vf_link_state
106 * @vf: pointer to the VF structure
107 *
108 * send a link status message to a single VF
109 **/
110 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
111 {
112 struct virtchnl_pf_event pfe;
113 struct i40e_pf *pf = vf->pf;
114 struct i40e_hw *hw = &pf->hw;
115 struct i40e_link_status *ls = &pf->hw.phy.link_info;
116 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
117
118 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
119 pfe.severity = PF_EVENT_SEVERITY_INFO;
120
121 i40e_set_vf_link_state(vf, &pfe, ls);
122
123 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
124 0, (u8 *)&pfe, sizeof(pfe), NULL);
125 }
126
127 /**
128 * i40e_vc_notify_link_state
129 * @pf: pointer to the PF structure
130 *
131 * send a link status message to all VFs on a given PF
132 **/
133 void i40e_vc_notify_link_state(struct i40e_pf *pf)
134 {
135 int i;
136
137 for (i = 0; i < pf->num_alloc_vfs; i++)
138 i40e_vc_notify_vf_link_state(&pf->vf[i]);
139 }
140
141 /**
142 * i40e_vc_notify_reset
143 * @pf: pointer to the PF structure
144 *
145 * indicate a pending reset to all VFs on a given PF
146 **/
147 void i40e_vc_notify_reset(struct i40e_pf *pf)
148 {
149 struct virtchnl_pf_event pfe;
150
151 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
152 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
153 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
154 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
155 }
156
157 #ifdef CONFIG_PCI_IOV
158 void i40e_restore_all_vfs_msi_state(struct pci_dev *pdev)
159 {
160 u16 vf_id;
161 u16 pos;
162
163 /* Continue only if this is a PF */
164 if (!pdev->is_physfn)
165 return;
166
167 if (!pci_num_vf(pdev))
168 return;
169
170 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
171 if (pos) {
172 struct pci_dev *vf_dev = NULL;
173
174 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
175 while ((vf_dev = pci_get_device(pdev->vendor, vf_id, vf_dev))) {
176 if (vf_dev->is_virtfn && vf_dev->physfn == pdev)
177 pci_restore_msi_state(vf_dev);
178 }
179 }
180 }
181 #endif /* CONFIG_PCI_IOV */
182
183 /**
184 * i40e_vc_notify_vf_reset
185 * @vf: pointer to the VF structure
186 *
187 * indicate a pending reset to the given VF
188 **/
189 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
190 {
191 struct virtchnl_pf_event pfe;
192 int abs_vf_id;
193
194 /* validate the request */
195 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
196 return;
197
198 /* verify if the VF is in either init or active before proceeding */
199 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
200 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
201 return;
202
203 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
204
205 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
206 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
207 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
208 0, (u8 *)&pfe,
209 sizeof(struct virtchnl_pf_event), NULL);
210 }
211 /***********************misc routines*****************************/
212
213 /**
214 * i40e_vc_reset_vf
215 * @vf: pointer to the VF info
216 * @notify_vf: notify vf about reset or not
217 * Reset VF handler.
218 **/
219 static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
220 {
221 struct i40e_pf *pf = vf->pf;
222 int i;
223
224 if (notify_vf)
225 i40e_vc_notify_vf_reset(vf);
226
227 /* We want to ensure that an actual reset occurs initiated after this
228 * function was called. However, we do not want to wait forever, so
229 * we'll give a reasonable time and print a message if we failed to
230 * ensure a reset.
231 */
232 for (i = 0; i < 20; i++) {
233 /* If PF is in VFs releasing state reset VF is impossible,
234 * so leave it.
235 */
236 if (test_bit(__I40E_VFS_RELEASING, pf->state))
237 return;
238 if (i40e_reset_vf(vf, false))
239 return;
240 usleep_range(10000, 20000);
241 }
242
243 if (notify_vf)
244 dev_warn(&vf->pf->pdev->dev,
245 "Failed to initiate reset for VF %d after 200 milliseconds\n",
246 vf->vf_id);
247 else
248 dev_dbg(&vf->pf->pdev->dev,
249 "Failed to initiate reset for VF %d after 200 milliseconds\n",
250 vf->vf_id);
251 }
252
253 /**
254 * i40e_vc_isvalid_vsi_id
255 * @vf: pointer to the VF info
256 * @vsi_id: VF relative VSI id
257 *
258 * check for the valid VSI id
259 **/
260 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
261 {
262 struct i40e_pf *pf = vf->pf;
263 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
264
265 return (vsi && (vsi->vf_id == vf->vf_id));
266 }
267
268 /**
269 * i40e_vc_isvalid_queue_id
270 * @vf: pointer to the VF info
271 * @vsi_id: vsi id
272 * @qid: vsi relative queue id
273 *
274 * check for the valid queue id
275 **/
276 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
277 u16 qid)
278 {
279 struct i40e_pf *pf = vf->pf;
280 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
281
282 return (vsi && (qid < vsi->alloc_queue_pairs));
283 }
284
285 /**
286 * i40e_vc_isvalid_vector_id
287 * @vf: pointer to the VF info
288 * @vector_id: VF relative vector id
289 *
290 * check for the valid vector id
291 **/
292 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
293 {
294 struct i40e_pf *pf = vf->pf;
295
296 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
297 }
298
299 /***********************vf resource mgmt routines*****************/
300
301 /**
302 * i40e_vc_get_pf_queue_id
303 * @vf: pointer to the VF info
304 * @vsi_id: id of VSI as provided by the FW
305 * @vsi_queue_id: vsi relative queue id
306 *
307 * return PF relative queue id
308 **/
309 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
310 u8 vsi_queue_id)
311 {
312 struct i40e_pf *pf = vf->pf;
313 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
314 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
315
316 if (!vsi)
317 return pf_queue_id;
318
319 if (le16_to_cpu(vsi->info.mapping_flags) &
320 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
321 pf_queue_id =
322 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
323 else
324 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
325 vsi_queue_id;
326
327 return pf_queue_id;
328 }
329
330 /**
331 * i40e_get_real_pf_qid
332 * @vf: pointer to the VF info
333 * @vsi_id: vsi id
334 * @queue_id: queue number
335 *
336 * wrapper function to get pf_queue_id handling ADq code as well
337 **/
338 static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
339 {
340 int i;
341
342 if (vf->adq_enabled) {
343 /* Although VF considers all the queues(can be 1 to 16) as its
344 * own but they may actually belong to different VSIs(up to 4).
345 * We need to find which queues belongs to which VSI.
346 */
347 for (i = 0; i < vf->num_tc; i++) {
348 if (queue_id < vf->ch[i].num_qps) {
349 vsi_id = vf->ch[i].vsi_id;
350 break;
351 }
352 /* find right queue id which is relative to a
353 * given VSI.
354 */
355 queue_id -= vf->ch[i].num_qps;
356 }
357 }
358
359 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
360 }
361
362 /**
363 * i40e_config_irq_link_list
364 * @vf: pointer to the VF info
365 * @vsi_id: id of VSI as given by the FW
366 * @vecmap: irq map info
367 *
368 * configure irq link list from the map
369 **/
370 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
371 struct virtchnl_vector_map *vecmap)
372 {
373 unsigned long linklistmap = 0, tempmap;
374 struct i40e_pf *pf = vf->pf;
375 struct i40e_hw *hw = &pf->hw;
376 u16 vsi_queue_id, pf_queue_id;
377 enum i40e_queue_type qtype;
378 u16 next_q, vector_id, size;
379 u32 reg, reg_idx;
380 u16 itr_idx = 0;
381
382 vector_id = vecmap->vector_id;
383 /* setup the head */
384 if (0 == vector_id)
385 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
386 else
387 reg_idx = I40E_VPINT_LNKLSTN(
388 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
389 (vector_id - 1));
390
391 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
392 /* Special case - No queues mapped on this vector */
393 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
394 goto irq_list_done;
395 }
396 tempmap = vecmap->rxq_map;
397 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
398 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
399 vsi_queue_id));
400 }
401
402 tempmap = vecmap->txq_map;
403 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
404 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
405 vsi_queue_id + 1));
406 }
407
408 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
409 next_q = find_first_bit(&linklistmap, size);
410 if (unlikely(next_q == size))
411 goto irq_list_done;
412
413 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
414 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
415 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
416 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
417
418 wr32(hw, reg_idx, reg);
419
420 while (next_q < size) {
421 switch (qtype) {
422 case I40E_QUEUE_TYPE_RX:
423 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
424 itr_idx = vecmap->rxitr_idx;
425 break;
426 case I40E_QUEUE_TYPE_TX:
427 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
428 itr_idx = vecmap->txitr_idx;
429 break;
430 default:
431 break;
432 }
433
434 next_q = find_next_bit(&linklistmap, size, next_q + 1);
435 if (next_q < size) {
436 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
437 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
438 pf_queue_id = i40e_get_real_pf_qid(vf,
439 vsi_id,
440 vsi_queue_id);
441 } else {
442 pf_queue_id = I40E_QUEUE_END_OF_LIST;
443 qtype = 0;
444 }
445
446 /* format for the RQCTL & TQCTL regs is same */
447 reg = (vector_id) |
448 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
449 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
450 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
451 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
452 wr32(hw, reg_idx, reg);
453 }
454
455 /* if the vf is running in polling mode and using interrupt zero,
456 * need to disable auto-mask on enabling zero interrupt for VFs.
457 */
458 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
459 (vector_id == 0)) {
460 reg = rd32(hw, I40E_GLINT_CTL);
461 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
462 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
463 wr32(hw, I40E_GLINT_CTL, reg);
464 }
465 }
466
467 irq_list_done:
468 i40e_flush(hw);
469 }
470
471 /**
472 * i40e_release_rdma_qvlist
473 * @vf: pointer to the VF.
474 *
475 **/
476 static void i40e_release_rdma_qvlist(struct i40e_vf *vf)
477 {
478 struct i40e_pf *pf = vf->pf;
479 struct virtchnl_rdma_qvlist_info *qvlist_info = vf->qvlist_info;
480 u32 msix_vf;
481 u32 i;
482
483 if (!vf->qvlist_info)
484 return;
485
486 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
487 for (i = 0; i < qvlist_info->num_vectors; i++) {
488 struct virtchnl_rdma_qv_info *qv_info;
489 u32 next_q_index, next_q_type;
490 struct i40e_hw *hw = &pf->hw;
491 u32 v_idx, reg_idx, reg;
492
493 qv_info = &qvlist_info->qv_info[i];
494 v_idx = qv_info->v_idx;
495 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
496 /* Figure out the queue after CEQ and make that the
497 * first queue.
498 */
499 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
500 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
501 next_q_index = FIELD_GET(I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK,
502 reg);
503 next_q_type = FIELD_GET(I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK,
504 reg);
505
506 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
507 reg = (next_q_index &
508 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
509 (next_q_type <<
510 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
511
512 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
513 }
514 }
515 kfree(vf->qvlist_info);
516 vf->qvlist_info = NULL;
517 }
518
519 /**
520 * i40e_config_rdma_qvlist
521 * @vf: pointer to the VF info
522 * @qvlist_info: queue and vector list
523 *
524 * Return 0 on success or < 0 on error
525 **/
526 static int
527 i40e_config_rdma_qvlist(struct i40e_vf *vf,
528 struct virtchnl_rdma_qvlist_info *qvlist_info)
529 {
530 struct i40e_pf *pf = vf->pf;
531 struct i40e_hw *hw = &pf->hw;
532 struct virtchnl_rdma_qv_info *qv_info;
533 u32 v_idx, i, reg_idx, reg;
534 u32 next_q_idx, next_q_type;
535 size_t size;
536 u32 msix_vf;
537 int ret = 0;
538
539 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
540
541 if (qvlist_info->num_vectors > msix_vf) {
542 dev_warn(&pf->pdev->dev,
543 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
544 qvlist_info->num_vectors,
545 msix_vf);
546 ret = -EINVAL;
547 goto err_out;
548 }
549
550 kfree(vf->qvlist_info);
551 size = virtchnl_struct_size(vf->qvlist_info, qv_info,
552 qvlist_info->num_vectors);
553 vf->qvlist_info = kzalloc(size, GFP_KERNEL);
554 if (!vf->qvlist_info) {
555 ret = -ENOMEM;
556 goto err_out;
557 }
558 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
559
560 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
561 for (i = 0; i < qvlist_info->num_vectors; i++) {
562 qv_info = &qvlist_info->qv_info[i];
563
564 /* Validate vector id belongs to this vf */
565 if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) {
566 ret = -EINVAL;
567 goto err_free;
568 }
569
570 v_idx = qv_info->v_idx;
571
572 vf->qvlist_info->qv_info[i] = *qv_info;
573
574 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
575 /* We might be sharing the interrupt, so get the first queue
576 * index and type, push it down the list by adding the new
577 * queue on top. Also link it with the new queue in CEQCTL.
578 */
579 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
580 next_q_idx = FIELD_GET(I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK,
581 reg);
582 next_q_type = FIELD_GET(I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK,
583 reg);
584
585 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
586 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
587 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
588 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
589 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
590 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
591 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
592 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
593
594 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
595 reg = (qv_info->ceq_idx &
596 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
597 (I40E_QUEUE_TYPE_PE_CEQ <<
598 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
599 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
600 }
601
602 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
603 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
604 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
605 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
606
607 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
608 }
609 }
610
611 return 0;
612 err_free:
613 kfree(vf->qvlist_info);
614 vf->qvlist_info = NULL;
615 err_out:
616 return ret;
617 }
618
619 /**
620 * i40e_config_vsi_tx_queue
621 * @vf: pointer to the VF info
622 * @vsi_id: id of VSI as provided by the FW
623 * @vsi_queue_id: vsi relative queue index
624 * @info: config. info
625 *
626 * configure tx queue
627 **/
628 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
629 u16 vsi_queue_id,
630 struct virtchnl_txq_info *info)
631 {
632 struct i40e_pf *pf = vf->pf;
633 struct i40e_hw *hw = &pf->hw;
634 struct i40e_hmc_obj_txq tx_ctx;
635 struct i40e_vsi *vsi;
636 u16 pf_queue_id;
637 u32 qtx_ctl;
638 int ret = 0;
639
640 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
641 ret = -ENOENT;
642 goto error_context;
643 }
644 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
645 vsi = i40e_find_vsi_from_id(pf, vsi_id);
646 if (!vsi) {
647 ret = -ENOENT;
648 goto error_context;
649 }
650
651 /* clear the context structure first */
652 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
653
654 /* only set the required fields */
655 tx_ctx.base = info->dma_ring_addr / 128;
656 tx_ctx.qlen = info->ring_len;
657 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
658 tx_ctx.rdylist_act = 0;
659 tx_ctx.head_wb_ena = info->headwb_enabled;
660 tx_ctx.head_wb_addr = info->dma_headwb_addr;
661
662 /* clear the context in the HMC */
663 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
664 if (ret) {
665 dev_err(&pf->pdev->dev,
666 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
667 pf_queue_id, ret);
668 ret = -ENOENT;
669 goto error_context;
670 }
671
672 /* set the context in the HMC */
673 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
674 if (ret) {
675 dev_err(&pf->pdev->dev,
676 "Failed to set VF LAN Tx queue context %d error: %d\n",
677 pf_queue_id, ret);
678 ret = -ENOENT;
679 goto error_context;
680 }
681
682 /* associate this queue with the PCI VF function */
683 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
684 qtx_ctl |= FIELD_PREP(I40E_QTX_CTL_PF_INDX_MASK, hw->pf_id);
685 qtx_ctl |= FIELD_PREP(I40E_QTX_CTL_VFVM_INDX_MASK,
686 vf->vf_id + hw->func_caps.vf_base_id);
687 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
688 i40e_flush(hw);
689
690 error_context:
691 return ret;
692 }
693
694 /**
695 * i40e_config_vsi_rx_queue
696 * @vf: pointer to the VF info
697 * @vsi_id: id of VSI as provided by the FW
698 * @vsi_queue_id: vsi relative queue index
699 * @info: config. info
700 *
701 * configure rx queue
702 **/
703 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
704 u16 vsi_queue_id,
705 struct virtchnl_rxq_info *info)
706 {
707 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
708 struct i40e_pf *pf = vf->pf;
709 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
710 struct i40e_hw *hw = &pf->hw;
711 struct i40e_hmc_obj_rxq rx_ctx;
712 int ret = 0;
713
714 /* clear the context structure first */
715 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
716
717 /* only set the required fields */
718 rx_ctx.base = info->dma_ring_addr / 128;
719 rx_ctx.qlen = info->ring_len;
720
721 if (info->splithdr_enabled) {
722 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
723 I40E_RX_SPLIT_IP |
724 I40E_RX_SPLIT_TCP_UDP |
725 I40E_RX_SPLIT_SCTP;
726 /* header length validation */
727 if (info->hdr_size > ((2 * 1024) - 64)) {
728 ret = -EINVAL;
729 goto error_param;
730 }
731 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
732
733 /* set split mode 10b */
734 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
735 }
736
737 /* databuffer length validation */
738 if (info->databuffer_size > ((16 * 1024) - 128)) {
739 ret = -EINVAL;
740 goto error_param;
741 }
742 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
743
744 /* max pkt. length validation */
745 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
746 ret = -EINVAL;
747 goto error_param;
748 }
749 rx_ctx.rxmax = info->max_pkt_size;
750
751 /* if port VLAN is configured increase the max packet size */
752 if (vsi->info.pvid)
753 rx_ctx.rxmax += VLAN_HLEN;
754
755 /* enable 32bytes desc always */
756 rx_ctx.dsize = 1;
757
758 /* default values */
759 rx_ctx.lrxqthresh = 1;
760 rx_ctx.crcstrip = 1;
761 rx_ctx.prefena = 1;
762 rx_ctx.l2tsel = 1;
763
764 /* clear the context in the HMC */
765 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
766 if (ret) {
767 dev_err(&pf->pdev->dev,
768 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
769 pf_queue_id, ret);
770 ret = -ENOENT;
771 goto error_param;
772 }
773
774 /* set the context in the HMC */
775 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
776 if (ret) {
777 dev_err(&pf->pdev->dev,
778 "Failed to set VF LAN Rx queue context %d error: %d\n",
779 pf_queue_id, ret);
780 ret = -ENOENT;
781 goto error_param;
782 }
783
784 error_param:
785 return ret;
786 }
787
788 /**
789 * i40e_alloc_vsi_res
790 * @vf: pointer to the VF info
791 * @idx: VSI index, applies only for ADq mode, zero otherwise
792 *
793 * alloc VF vsi context & resources
794 **/
795 static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
796 {
797 struct i40e_mac_filter *f = NULL;
798 struct i40e_vsi *main_vsi, *vsi;
799 struct i40e_pf *pf = vf->pf;
800 u64 max_tx_rate = 0;
801 int ret = 0;
802
803 main_vsi = i40e_pf_get_main_vsi(pf);
804 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, main_vsi->seid, vf->vf_id);
805
806 if (!vsi) {
807 dev_err(&pf->pdev->dev,
808 "add vsi failed for VF %d, aq_err %d\n",
809 vf->vf_id, pf->hw.aq.asq_last_status);
810 ret = -ENOENT;
811 goto error_alloc_vsi_res;
812 }
813
814 if (!idx) {
815 u64 hena = i40e_pf_get_default_rss_hena(pf);
816 u8 broadcast[ETH_ALEN];
817
818 vf->lan_vsi_idx = vsi->idx;
819 vf->lan_vsi_id = vsi->id;
820 /* If the port VLAN has been configured and then the
821 * VF driver was removed then the VSI port VLAN
822 * configuration was destroyed. Check if there is
823 * a port VLAN and restore the VSI configuration if
824 * needed.
825 */
826 if (vf->port_vlan_id)
827 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
828
829 spin_lock_bh(&vsi->mac_filter_hash_lock);
830 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
831 f = i40e_add_mac_filter(vsi,
832 vf->default_lan_addr.addr);
833 if (!f)
834 dev_info(&pf->pdev->dev,
835 "Could not add MAC filter %pM for VF %d\n",
836 vf->default_lan_addr.addr, vf->vf_id);
837 }
838 eth_broadcast_addr(broadcast);
839 f = i40e_add_mac_filter(vsi, broadcast);
840 if (!f)
841 dev_info(&pf->pdev->dev,
842 "Could not allocate VF broadcast filter\n");
843 spin_unlock_bh(&vsi->mac_filter_hash_lock);
844 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
845 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
846 /* program mac filter only for VF VSI */
847 ret = i40e_sync_vsi_filters(vsi);
848 if (ret)
849 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
850 }
851
852 /* storing VSI index and id for ADq and don't apply the mac filter */
853 if (vf->adq_enabled) {
854 vf->ch[idx].vsi_idx = vsi->idx;
855 vf->ch[idx].vsi_id = vsi->id;
856 }
857
858 /* Set VF bandwidth if specified */
859 if (vf->tx_rate) {
860 max_tx_rate = vf->tx_rate;
861 } else if (vf->ch[idx].max_tx_rate) {
862 max_tx_rate = vf->ch[idx].max_tx_rate;
863 }
864
865 if (max_tx_rate) {
866 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
867 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
868 max_tx_rate, 0, NULL);
869 if (ret)
870 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
871 vf->vf_id, ret);
872 }
873
874 error_alloc_vsi_res:
875 return ret;
876 }
877
878 /**
879 * i40e_map_pf_queues_to_vsi
880 * @vf: pointer to the VF info
881 *
882 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
883 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
884 **/
885 static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
886 {
887 struct i40e_pf *pf = vf->pf;
888 struct i40e_hw *hw = &pf->hw;
889 u32 reg, num_tc = 1; /* VF has at least one traffic class */
890 u16 vsi_id, qps;
891 int i, j;
892
893 if (vf->adq_enabled)
894 num_tc = vf->num_tc;
895
896 for (i = 0; i < num_tc; i++) {
897 if (vf->adq_enabled) {
898 qps = vf->ch[i].num_qps;
899 vsi_id = vf->ch[i].vsi_id;
900 } else {
901 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
902 vsi_id = vf->lan_vsi_id;
903 }
904
905 for (j = 0; j < 7; j++) {
906 if (j * 2 >= qps) {
907 /* end of list */
908 reg = 0x07FF07FF;
909 } else {
910 u16 qid = i40e_vc_get_pf_queue_id(vf,
911 vsi_id,
912 j * 2);
913 reg = qid;
914 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
915 (j * 2) + 1);
916 reg |= qid << 16;
917 }
918 i40e_write_rx_ctl(hw,
919 I40E_VSILAN_QTABLE(j, vsi_id),
920 reg);
921 }
922 }
923 }
924
925 /**
926 * i40e_map_pf_to_vf_queues
927 * @vf: pointer to the VF info
928 *
929 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
930 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
931 **/
932 static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
933 {
934 struct i40e_pf *pf = vf->pf;
935 struct i40e_hw *hw = &pf->hw;
936 u32 reg, total_qps = 0;
937 u32 qps, num_tc = 1; /* VF has at least one traffic class */
938 u16 vsi_id, qid;
939 int i, j;
940
941 if (vf->adq_enabled)
942 num_tc = vf->num_tc;
943
944 for (i = 0; i < num_tc; i++) {
945 if (vf->adq_enabled) {
946 qps = vf->ch[i].num_qps;
947 vsi_id = vf->ch[i].vsi_id;
948 } else {
949 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
950 vsi_id = vf->lan_vsi_id;
951 }
952
953 for (j = 0; j < qps; j++) {
954 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
955
956 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
957 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
958 reg);
959 total_qps++;
960 }
961 }
962 }
963
964 /**
965 * i40e_enable_vf_mappings
966 * @vf: pointer to the VF info
967 *
968 * enable VF mappings
969 **/
970 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
971 {
972 struct i40e_pf *pf = vf->pf;
973 struct i40e_hw *hw = &pf->hw;
974 u32 reg;
975
976 /* Tell the hardware we're using noncontiguous mapping. HW requires
977 * that VF queues be mapped using this method, even when they are
978 * contiguous in real life
979 */
980 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
981 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
982
983 /* enable VF vplan_qtable mappings */
984 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
985 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
986
987 i40e_map_pf_to_vf_queues(vf);
988 i40e_map_pf_queues_to_vsi(vf);
989
990 i40e_flush(hw);
991 }
992
993 /**
994 * i40e_disable_vf_mappings
995 * @vf: pointer to the VF info
996 *
997 * disable VF mappings
998 **/
999 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
1000 {
1001 struct i40e_pf *pf = vf->pf;
1002 struct i40e_hw *hw = &pf->hw;
1003 int i;
1004
1005 /* disable qp mappings */
1006 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
1007 for (i = 0; i < I40E_MAX_VSI_QP; i++)
1008 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
1009 I40E_QUEUE_END_OF_LIST);
1010 i40e_flush(hw);
1011 }
1012
1013 /**
1014 * i40e_free_vf_res
1015 * @vf: pointer to the VF info
1016 *
1017 * free VF resources
1018 **/
1019 static void i40e_free_vf_res(struct i40e_vf *vf)
1020 {
1021 struct i40e_pf *pf = vf->pf;
1022 struct i40e_hw *hw = &pf->hw;
1023 u32 reg_idx, reg;
1024 int i, j, msix_vf;
1025
1026 /* Start by disabling VF's configuration API to prevent the OS from
1027 * accessing the VF's VSI after it's freed / invalidated.
1028 */
1029 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1030
1031 /* It's possible the VF had requeuested more queues than the default so
1032 * do the accounting here when we're about to free them.
1033 */
1034 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
1035 pf->queues_left += vf->num_queue_pairs -
1036 I40E_DEFAULT_QUEUES_PER_VF;
1037 }
1038
1039 /* free vsi & disconnect it from the parent uplink */
1040 if (vf->lan_vsi_idx) {
1041 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
1042 vf->lan_vsi_idx = 0;
1043 vf->lan_vsi_id = 0;
1044 }
1045
1046 /* do the accounting and remove additional ADq VSI's */
1047 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
1048 for (j = 0; j < vf->num_tc; j++) {
1049 /* At this point VSI0 is already released so don't
1050 * release it again and only clear their values in
1051 * structure variables
1052 */
1053 if (j)
1054 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
1055 vf->ch[j].vsi_idx = 0;
1056 vf->ch[j].vsi_id = 0;
1057 }
1058 }
1059 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
1060
1061 /* disable interrupts so the VF starts in a known state */
1062 for (i = 0; i < msix_vf; i++) {
1063 /* format is same for both registers */
1064 if (0 == i)
1065 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
1066 else
1067 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
1068 (vf->vf_id))
1069 + (i - 1));
1070 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
1071 i40e_flush(hw);
1072 }
1073
1074 /* clear the irq settings */
1075 for (i = 0; i < msix_vf; i++) {
1076 /* format is same for both registers */
1077 if (0 == i)
1078 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
1079 else
1080 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
1081 (vf->vf_id))
1082 + (i - 1));
1083 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1084 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1085 wr32(hw, reg_idx, reg);
1086 i40e_flush(hw);
1087 }
1088 /* reset some of the state variables keeping track of the resources */
1089 vf->num_queue_pairs = 0;
1090 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1091 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1092 }
1093
1094 /**
1095 * i40e_alloc_vf_res
1096 * @vf: pointer to the VF info
1097 *
1098 * allocate VF resources
1099 **/
1100 static int i40e_alloc_vf_res(struct i40e_vf *vf)
1101 {
1102 struct i40e_pf *pf = vf->pf;
1103 int total_queue_pairs = 0;
1104 int ret, idx;
1105
1106 if (vf->num_req_queues &&
1107 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1108 pf->num_vf_qps = vf->num_req_queues;
1109 else
1110 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1111
1112 /* allocate hw vsi context & associated resources */
1113 ret = i40e_alloc_vsi_res(vf, 0);
1114 if (ret)
1115 goto error_alloc;
1116 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1117
1118 /* allocate additional VSIs based on tc information for ADq */
1119 if (vf->adq_enabled) {
1120 if (pf->queues_left >=
1121 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1122 /* TC 0 always belongs to VF VSI */
1123 for (idx = 1; idx < vf->num_tc; idx++) {
1124 ret = i40e_alloc_vsi_res(vf, idx);
1125 if (ret)
1126 goto error_alloc;
1127 }
1128 /* send correct number of queues */
1129 total_queue_pairs = I40E_MAX_VF_QUEUES;
1130 } else {
1131 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1132 vf->vf_id);
1133 vf->adq_enabled = false;
1134 }
1135 }
1136
1137 /* We account for each VF to get a default number of queue pairs. If
1138 * the VF has now requested more, we need to account for that to make
1139 * certain we never request more queues than we actually have left in
1140 * HW.
1141 */
1142 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1143 pf->queues_left -=
1144 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1145
1146 if (vf->trusted)
1147 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1148 else
1149 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1150
1151 /* store the total qps number for the runtime
1152 * VF req validation
1153 */
1154 vf->num_queue_pairs = total_queue_pairs;
1155
1156 /* VF is now completely initialized */
1157 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1158
1159 error_alloc:
1160 if (ret)
1161 i40e_free_vf_res(vf);
1162
1163 return ret;
1164 }
1165
1166 #define VF_DEVICE_STATUS 0xAA
1167 #define VF_TRANS_PENDING_MASK 0x20
1168 /**
1169 * i40e_quiesce_vf_pci
1170 * @vf: pointer to the VF structure
1171 *
1172 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1173 * if the transactions never clear.
1174 **/
1175 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1176 {
1177 struct i40e_pf *pf = vf->pf;
1178 struct i40e_hw *hw = &pf->hw;
1179 int vf_abs_id, i;
1180 u32 reg;
1181
1182 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1183
1184 wr32(hw, I40E_PF_PCI_CIAA,
1185 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1186 for (i = 0; i < 100; i++) {
1187 reg = rd32(hw, I40E_PF_PCI_CIAD);
1188 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1189 return 0;
1190 udelay(1);
1191 }
1192 return -EIO;
1193 }
1194
1195 /**
1196 * __i40e_getnum_vf_vsi_vlan_filters
1197 * @vsi: pointer to the vsi
1198 *
1199 * called to get the number of VLANs offloaded on this VF
1200 **/
1201 static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1202 {
1203 struct i40e_mac_filter *f;
1204 u16 num_vlans = 0, bkt;
1205
1206 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1207 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1208 num_vlans++;
1209 }
1210
1211 return num_vlans;
1212 }
1213
1214 /**
1215 * i40e_getnum_vf_vsi_vlan_filters
1216 * @vsi: pointer to the vsi
1217 *
1218 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
1219 **/
1220 static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1221 {
1222 int num_vlans;
1223
1224 spin_lock_bh(&vsi->mac_filter_hash_lock);
1225 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1226 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1227
1228 return num_vlans;
1229 }
1230
1231 /**
1232 * i40e_get_vlan_list_sync
1233 * @vsi: pointer to the VSI
1234 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller
1235 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
1236 * This array is allocated here, but has to be freed in caller.
1237 *
1238 * Called to get number of VLANs and VLAN list present in mac_filter_hash.
1239 **/
1240 static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
1241 s16 **vlan_list)
1242 {
1243 struct i40e_mac_filter *f;
1244 int i = 0;
1245 int bkt;
1246
1247 spin_lock_bh(&vsi->mac_filter_hash_lock);
1248 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1249 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC);
1250 if (!(*vlan_list))
1251 goto err;
1252
1253 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1254 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1255 continue;
1256 (*vlan_list)[i++] = f->vlan;
1257 }
1258 err:
1259 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1260 }
1261
1262 /**
1263 * i40e_set_vsi_promisc
1264 * @vf: pointer to the VF struct
1265 * @seid: VSI number
1266 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
1267 * for a given VLAN
1268 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
1269 * for a given VLAN
1270 * @vl: List of VLANs - apply filter for given VLANs
1271 * @num_vlans: Number of elements in @vl
1272 **/
1273 static int
1274 i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
1275 bool unicast_enable, s16 *vl, u16 num_vlans)
1276 {
1277 struct i40e_pf *pf = vf->pf;
1278 struct i40e_hw *hw = &pf->hw;
1279 int aq_ret, aq_tmp = 0;
1280 int i;
1281
1282 /* No VLAN to set promisc on, set on VSI */
1283 if (!num_vlans || !vl) {
1284 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid,
1285 multi_enable,
1286 NULL);
1287 if (aq_ret) {
1288 int aq_err = pf->hw.aq.asq_last_status;
1289
1290 dev_err(&pf->pdev->dev,
1291 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1292 vf->vf_id,
1293 ERR_PTR(aq_ret),
1294 i40e_aq_str(&pf->hw, aq_err));
1295
1296 return aq_ret;
1297 }
1298
1299 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid,
1300 unicast_enable,
1301 NULL, true);
1302
1303 if (aq_ret) {
1304 int aq_err = pf->hw.aq.asq_last_status;
1305
1306 dev_err(&pf->pdev->dev,
1307 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1308 vf->vf_id,
1309 ERR_PTR(aq_ret),
1310 i40e_aq_str(&pf->hw, aq_err));
1311 }
1312
1313 return aq_ret;
1314 }
1315
1316 for (i = 0; i < num_vlans; i++) {
1317 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
1318 multi_enable,
1319 vl[i], NULL);
1320 if (aq_ret) {
1321 int aq_err = pf->hw.aq.asq_last_status;
1322
1323 dev_err(&pf->pdev->dev,
1324 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1325 vf->vf_id,
1326 ERR_PTR(aq_ret),
1327 i40e_aq_str(&pf->hw, aq_err));
1328
1329 if (!aq_tmp)
1330 aq_tmp = aq_ret;
1331 }
1332
1333 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
1334 unicast_enable,
1335 vl[i], NULL);
1336 if (aq_ret) {
1337 int aq_err = pf->hw.aq.asq_last_status;
1338
1339 dev_err(&pf->pdev->dev,
1340 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1341 vf->vf_id,
1342 ERR_PTR(aq_ret),
1343 i40e_aq_str(&pf->hw, aq_err));
1344
1345 if (!aq_tmp)
1346 aq_tmp = aq_ret;
1347 }
1348 }
1349
1350 if (aq_tmp)
1351 aq_ret = aq_tmp;
1352
1353 return aq_ret;
1354 }
1355
1356 /**
1357 * i40e_config_vf_promiscuous_mode
1358 * @vf: pointer to the VF info
1359 * @vsi_id: VSI id
1360 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1361 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1362 *
1363 * Called from the VF to configure the promiscuous mode of
1364 * VF vsis and from the VF reset path to reset promiscuous mode.
1365 **/
1366 static int i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1367 u16 vsi_id,
1368 bool allmulti,
1369 bool alluni)
1370 {
1371 struct i40e_pf *pf = vf->pf;
1372 struct i40e_vsi *vsi;
1373 int aq_ret = 0;
1374 u16 num_vlans;
1375 s16 *vl;
1376
1377 vsi = i40e_find_vsi_from_id(pf, vsi_id);
1378 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1379 return -EINVAL;
1380
1381 if (vf->port_vlan_id) {
1382 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti,
1383 alluni, &vf->port_vlan_id, 1);
1384 return aq_ret;
1385 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1386 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl);
1387
1388 if (!vl)
1389 return -ENOMEM;
1390
1391 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1392 vl, num_vlans);
1393 kfree(vl);
1394 return aq_ret;
1395 }
1396
1397 /* no VLANs to set on, set on VSI */
1398 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1399 NULL, 0);
1400 return aq_ret;
1401 }
1402
1403 /**
1404 * i40e_sync_vfr_reset
1405 * @hw: pointer to hw struct
1406 * @vf_id: VF identifier
1407 *
1408 * Before trigger hardware reset, we need to know if no other process has
1409 * reserved the hardware for any reset operations. This check is done by
1410 * examining the status of the RSTAT1 register used to signal the reset.
1411 **/
1412 static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1413 {
1414 u32 reg;
1415 int i;
1416
1417 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1418 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1419 I40E_VFINT_ICR0_ADMINQ_MASK;
1420 if (reg)
1421 return 0;
1422
1423 usleep_range(100, 200);
1424 }
1425
1426 return -EAGAIN;
1427 }
1428
1429 /**
1430 * i40e_trigger_vf_reset
1431 * @vf: pointer to the VF structure
1432 * @flr: VFLR was issued or not
1433 *
1434 * Trigger hardware to start a reset for a particular VF. Expects the caller
1435 * to wait the proper amount of time to allow hardware to reset the VF before
1436 * it cleans up and restores VF functionality.
1437 **/
1438 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1439 {
1440 struct i40e_pf *pf = vf->pf;
1441 struct i40e_hw *hw = &pf->hw;
1442 u32 reg, reg_idx, bit_idx;
1443 bool vf_active;
1444 u32 radq;
1445
1446 /* warn the VF */
1447 vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1448
1449 /* Disable VF's configuration API during reset. The flag is re-enabled
1450 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1451 * It's normally disabled in i40e_free_vf_res(), but it's safer
1452 * to do it earlier to give some time to finish to any VF config
1453 * functions that may still be running at this point.
1454 */
1455 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1456
1457 /* In the case of a VFLR, the HW has already reset the VF and we
1458 * just need to clean up, so don't hit the VFRTRIG register.
1459 */
1460 if (!flr) {
1461 /* Sync VFR reset before trigger next one */
1462 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1463 I40E_VFINT_ICR0_ADMINQ_MASK;
1464 if (vf_active && !radq)
1465 /* waiting for finish reset by virtual driver */
1466 if (i40e_sync_vfr_reset(hw, vf->vf_id))
1467 dev_info(&pf->pdev->dev,
1468 "Reset VF %d never finished\n",
1469 vf->vf_id);
1470
1471 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1472 * in progress state in rstat1 register.
1473 */
1474 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1475 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1476 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1477 i40e_flush(hw);
1478 }
1479 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1480 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1481 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1482 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1483 i40e_flush(hw);
1484
1485 if (i40e_quiesce_vf_pci(vf))
1486 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1487 vf->vf_id);
1488 }
1489
1490 /**
1491 * i40e_cleanup_reset_vf
1492 * @vf: pointer to the VF structure
1493 *
1494 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1495 * have verified whether the reset is finished properly, and ensure the
1496 * minimum amount of wait time has passed.
1497 **/
1498 static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1499 {
1500 struct i40e_pf *pf = vf->pf;
1501 struct i40e_hw *hw = &pf->hw;
1502 u32 reg;
1503
1504 /* disable promisc modes in case they were enabled */
1505 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1506
1507 /* free VF resources to begin resetting the VSI state */
1508 i40e_free_vf_res(vf);
1509
1510 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1511 * By doing this we allow HW to access VF memory at any point. If we
1512 * did it any sooner, HW could access memory while it was being freed
1513 * in i40e_free_vf_res(), causing an IOMMU fault.
1514 *
1515 * On the other hand, this needs to be done ASAP, because the VF driver
1516 * is waiting for this to happen and may report a timeout. It's
1517 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1518 * it.
1519 */
1520 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1521 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1522 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1523
1524 /* reallocate VF resources to finish resetting the VSI state */
1525 if (!i40e_alloc_vf_res(vf)) {
1526 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1527 i40e_enable_vf_mappings(vf);
1528 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1529 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1530 /* Do not notify the client during VF init */
1531 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1532 &vf->vf_states))
1533 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1534 vf->num_vlan = 0;
1535 }
1536
1537 /* Tell the VF driver the reset is done. This needs to be done only
1538 * after VF has been fully initialized, because the VF driver may
1539 * request resources immediately after setting this flag.
1540 */
1541 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1542 }
1543
1544 /**
1545 * i40e_reset_vf
1546 * @vf: pointer to the VF structure
1547 * @flr: VFLR was issued or not
1548 *
1549 * Returns true if the VF is in reset, resets successfully, or resets
1550 * are disabled and false otherwise.
1551 **/
1552 bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1553 {
1554 struct i40e_pf *pf = vf->pf;
1555 struct i40e_hw *hw = &pf->hw;
1556 bool rsd = false;
1557 u32 reg;
1558 int i;
1559
1560 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1561 return true;
1562
1563 /* Bail out if VFs are disabled. */
1564 if (test_bit(__I40E_VF_DISABLE, pf->state))
1565 return true;
1566
1567 /* If VF is being reset already we don't need to continue. */
1568 if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1569 return true;
1570
1571 i40e_trigger_vf_reset(vf, flr);
1572
1573 /* poll VPGEN_VFRSTAT reg to make sure
1574 * that reset is complete
1575 */
1576 for (i = 0; i < 10; i++) {
1577 /* VF reset requires driver to first reset the VF and then
1578 * poll the status register to make sure that the reset
1579 * completed successfully. Due to internal HW FIFO flushes,
1580 * we must wait 10ms before the register will be valid.
1581 */
1582 usleep_range(10000, 20000);
1583 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1584 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1585 rsd = true;
1586 break;
1587 }
1588 }
1589
1590 if (flr)
1591 usleep_range(10000, 20000);
1592
1593 if (!rsd)
1594 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1595 vf->vf_id);
1596 usleep_range(10000, 20000);
1597
1598 /* On initial reset, we don't have any queues to disable */
1599 if (vf->lan_vsi_idx != 0)
1600 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1601
1602 i40e_cleanup_reset_vf(vf);
1603
1604 i40e_flush(hw);
1605 usleep_range(20000, 40000);
1606 clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states);
1607
1608 return true;
1609 }
1610
1611 /**
1612 * i40e_reset_all_vfs
1613 * @pf: pointer to the PF structure
1614 * @flr: VFLR was issued or not
1615 *
1616 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1617 * VF, then do all the waiting in one chunk, and finally finish restoring each
1618 * VF after the wait. This is useful during PF routines which need to reset
1619 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1620 *
1621 * Returns true if any VFs were reset, and false otherwise.
1622 **/
1623 bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1624 {
1625 struct i40e_hw *hw = &pf->hw;
1626 struct i40e_vf *vf;
1627 u32 reg;
1628 int i;
1629
1630 /* If we don't have any VFs, then there is nothing to reset */
1631 if (!pf->num_alloc_vfs)
1632 return false;
1633
1634 /* If VFs have been disabled, there is no need to reset */
1635 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1636 return false;
1637
1638 /* Begin reset on all VFs at once */
1639 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1640 /* If VF is being reset no need to trigger reset again */
1641 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1642 i40e_trigger_vf_reset(vf, flr);
1643 }
1644
1645 /* HW requires some time to make sure it can flush the FIFO for a VF
1646 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1647 * sequence to make sure that it has completed. We'll keep track of
1648 * the VFs using a simple iterator that increments once that VF has
1649 * finished resetting.
1650 */
1651 for (i = 0, vf = &pf->vf[0]; i < 10 && vf < &pf->vf[pf->num_alloc_vfs]; ++i) {
1652 usleep_range(10000, 20000);
1653
1654 /* Check each VF in sequence, beginning with the VF to fail
1655 * the previous check.
1656 */
1657 while (vf < &pf->vf[pf->num_alloc_vfs]) {
1658 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
1659 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1660 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1661 break;
1662 }
1663
1664 /* If the current VF has finished resetting, move on
1665 * to the next VF in sequence.
1666 */
1667 ++vf;
1668 }
1669 }
1670
1671 if (flr)
1672 usleep_range(10000, 20000);
1673
1674 /* Display a warning if at least one VF didn't manage to reset in
1675 * time, but continue on with the operation.
1676 */
1677 if (vf < &pf->vf[pf->num_alloc_vfs])
1678 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1679 vf->vf_id);
1680 usleep_range(10000, 20000);
1681
1682 /* Begin disabling all the rings associated with VFs, but do not wait
1683 * between each VF.
1684 */
1685 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1686 /* On initial reset, we don't have any queues to disable */
1687 if (vf->lan_vsi_idx == 0)
1688 continue;
1689
1690 /* If VF is reset in another thread just continue */
1691 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1692 continue;
1693
1694 i40e_vsi_stop_rings_no_wait(pf->vsi[vf->lan_vsi_idx]);
1695 }
1696
1697 /* Now that we've notified HW to disable all of the VF rings, wait
1698 * until they finish.
1699 */
1700 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1701 /* On initial reset, we don't have any queues to disable */
1702 if (vf->lan_vsi_idx == 0)
1703 continue;
1704
1705 /* If VF is reset in another thread just continue */
1706 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1707 continue;
1708
1709 i40e_vsi_wait_queues_disabled(pf->vsi[vf->lan_vsi_idx]);
1710 }
1711
1712 /* Hw may need up to 50ms to finish disabling the RX queues. We
1713 * minimize the wait by delaying only once for all VFs.
1714 */
1715 mdelay(50);
1716
1717 /* Finish the reset on each VF */
1718 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1719 /* If VF is reset in another thread just continue */
1720 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1721 continue;
1722
1723 i40e_cleanup_reset_vf(vf);
1724 }
1725
1726 i40e_flush(hw);
1727 usleep_range(20000, 40000);
1728 clear_bit(__I40E_VF_DISABLE, pf->state);
1729
1730 return true;
1731 }
1732
1733 /**
1734 * i40e_free_vfs
1735 * @pf: pointer to the PF structure
1736 *
1737 * free VF resources
1738 **/
1739 void i40e_free_vfs(struct i40e_pf *pf)
1740 {
1741 struct i40e_hw *hw = &pf->hw;
1742 u32 reg_idx, bit_idx;
1743 int i, tmp, vf_id;
1744
1745 if (!pf->vf)
1746 return;
1747
1748 set_bit(__I40E_VFS_RELEASING, pf->state);
1749 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1750 usleep_range(1000, 2000);
1751
1752 i40e_notify_client_of_vf_enable(pf, 0);
1753
1754 /* Disable IOV before freeing resources. This lets any VF drivers
1755 * running in the host get themselves cleaned up before we yank
1756 * the carpet out from underneath their feet.
1757 */
1758 if (!pci_vfs_assigned(pf->pdev))
1759 pci_disable_sriov(pf->pdev);
1760 else
1761 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1762
1763 /* Amortize wait time by stopping all VFs at the same time */
1764 for (i = 0; i < pf->num_alloc_vfs; i++) {
1765 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1766 continue;
1767
1768 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1769 }
1770
1771 for (i = 0; i < pf->num_alloc_vfs; i++) {
1772 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1773 continue;
1774
1775 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1776 }
1777
1778 /* free up VF resources */
1779 tmp = pf->num_alloc_vfs;
1780 pf->num_alloc_vfs = 0;
1781 for (i = 0; i < tmp; i++) {
1782 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1783 i40e_free_vf_res(&pf->vf[i]);
1784 /* disable qp mappings */
1785 i40e_disable_vf_mappings(&pf->vf[i]);
1786 }
1787
1788 kfree(pf->vf);
1789 pf->vf = NULL;
1790
1791 /* This check is for when the driver is unloaded while VFs are
1792 * assigned. Setting the number of VFs to 0 through sysfs is caught
1793 * before this function ever gets called.
1794 */
1795 if (!pci_vfs_assigned(pf->pdev)) {
1796 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1797 * work correctly when SR-IOV gets re-enabled.
1798 */
1799 for (vf_id = 0; vf_id < tmp; vf_id++) {
1800 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1801 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1802 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1803 }
1804 }
1805 clear_bit(__I40E_VF_DISABLE, pf->state);
1806 clear_bit(__I40E_VFS_RELEASING, pf->state);
1807 }
1808
1809 #ifdef CONFIG_PCI_IOV
1810 /**
1811 * i40e_alloc_vfs
1812 * @pf: pointer to the PF structure
1813 * @num_alloc_vfs: number of VFs to allocate
1814 *
1815 * allocate VF resources
1816 **/
1817 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1818 {
1819 struct i40e_vf *vfs;
1820 int i, ret = 0;
1821
1822 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1823 i40e_irq_dynamic_disable_icr0(pf);
1824
1825 /* Check to see if we're just allocating resources for extant VFs */
1826 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1827 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1828 if (ret) {
1829 clear_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1830 pf->num_alloc_vfs = 0;
1831 goto err_iov;
1832 }
1833 }
1834 /* allocate memory */
1835 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1836 if (!vfs) {
1837 ret = -ENOMEM;
1838 goto err_alloc;
1839 }
1840 pf->vf = vfs;
1841
1842 /* apply default profile */
1843 for (i = 0; i < num_alloc_vfs; i++) {
1844 vfs[i].pf = pf;
1845 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1846 vfs[i].vf_id = i;
1847
1848 /* assign default capabilities */
1849 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1850 vfs[i].spoofchk = true;
1851
1852 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1853
1854 }
1855 pf->num_alloc_vfs = num_alloc_vfs;
1856
1857 /* VF resources get allocated during reset */
1858 i40e_reset_all_vfs(pf, false);
1859
1860 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1861
1862 err_alloc:
1863 if (ret)
1864 i40e_free_vfs(pf);
1865 err_iov:
1866 /* Re-enable interrupt 0. */
1867 i40e_irq_dynamic_enable_icr0(pf);
1868 return ret;
1869 }
1870
1871 #endif
1872 /**
1873 * i40e_pci_sriov_enable
1874 * @pdev: pointer to a pci_dev structure
1875 * @num_vfs: number of VFs to allocate
1876 *
1877 * Enable or change the number of VFs
1878 **/
1879 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1880 {
1881 #ifdef CONFIG_PCI_IOV
1882 struct i40e_pf *pf = pci_get_drvdata(pdev);
1883 int pre_existing_vfs = pci_num_vf(pdev);
1884 int err = 0;
1885
1886 if (test_bit(__I40E_TESTING, pf->state)) {
1887 dev_warn(&pdev->dev,
1888 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1889 err = -EPERM;
1890 goto err_out;
1891 }
1892
1893 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1894 i40e_free_vfs(pf);
1895 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1896 goto out;
1897
1898 if (num_vfs > pf->num_req_vfs) {
1899 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1900 num_vfs, pf->num_req_vfs);
1901 err = -EPERM;
1902 goto err_out;
1903 }
1904
1905 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1906 err = i40e_alloc_vfs(pf, num_vfs);
1907 if (err) {
1908 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1909 goto err_out;
1910 }
1911
1912 out:
1913 return num_vfs;
1914
1915 err_out:
1916 return err;
1917 #endif
1918 return 0;
1919 }
1920
1921 /**
1922 * i40e_pci_sriov_configure
1923 * @pdev: pointer to a pci_dev structure
1924 * @num_vfs: number of VFs to allocate
1925 *
1926 * Enable or change the number of VFs. Called when the user updates the number
1927 * of VFs in sysfs.
1928 **/
1929 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1930 {
1931 struct i40e_pf *pf = pci_get_drvdata(pdev);
1932 int ret = 0;
1933
1934 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1935 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1936 return -EAGAIN;
1937 }
1938
1939 if (num_vfs) {
1940 if (!test_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags)) {
1941 set_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1942 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1943 }
1944 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1945 goto sriov_configure_out;
1946 }
1947
1948 if (!pci_vfs_assigned(pf->pdev)) {
1949 i40e_free_vfs(pf);
1950 clear_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1951 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1952 } else {
1953 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1954 ret = -EINVAL;
1955 goto sriov_configure_out;
1956 }
1957 sriov_configure_out:
1958 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1959 return ret;
1960 }
1961
1962 /***********************virtual channel routines******************/
1963
1964 /**
1965 * i40e_vc_send_msg_to_vf
1966 * @vf: pointer to the VF info
1967 * @v_opcode: virtual channel opcode
1968 * @v_retval: virtual channel return value
1969 * @msg: pointer to the msg buffer
1970 * @msglen: msg length
1971 *
1972 * send msg to VF
1973 **/
1974 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1975 u32 v_retval, u8 *msg, u16 msglen)
1976 {
1977 struct i40e_pf *pf;
1978 struct i40e_hw *hw;
1979 int abs_vf_id;
1980 int aq_ret;
1981
1982 /* validate the request */
1983 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1984 return -EINVAL;
1985
1986 pf = vf->pf;
1987 hw = &pf->hw;
1988 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1989
1990 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1991 msg, msglen, NULL);
1992 if (aq_ret) {
1993 dev_info(&pf->pdev->dev,
1994 "Unable to send the message to VF %d aq_err %d\n",
1995 vf->vf_id, pf->hw.aq.asq_last_status);
1996 return -EIO;
1997 }
1998
1999 return 0;
2000 }
2001
2002 /**
2003 * i40e_vc_send_resp_to_vf
2004 * @vf: pointer to the VF info
2005 * @opcode: operation code
2006 * @retval: return value
2007 *
2008 * send resp msg to VF
2009 **/
2010 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
2011 enum virtchnl_ops opcode,
2012 int retval)
2013 {
2014 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
2015 }
2016
2017 /**
2018 * i40e_sync_vf_state
2019 * @vf: pointer to the VF info
2020 * @state: VF state
2021 *
2022 * Called from a VF message to synchronize the service with a potential
2023 * VF reset state
2024 **/
2025 static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
2026 {
2027 int i;
2028
2029 /* When handling some messages, it needs VF state to be set.
2030 * It is possible that this flag is cleared during VF reset,
2031 * so there is a need to wait until the end of the reset to
2032 * handle the request message correctly.
2033 */
2034 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
2035 if (test_bit(state, &vf->vf_states))
2036 return true;
2037 usleep_range(10000, 20000);
2038 }
2039
2040 return test_bit(state, &vf->vf_states);
2041 }
2042
2043 /**
2044 * i40e_vc_get_version_msg
2045 * @vf: pointer to the VF info
2046 * @msg: pointer to the msg buffer
2047 *
2048 * called from the VF to request the API version used by the PF
2049 **/
2050 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
2051 {
2052 struct virtchnl_version_info info = {
2053 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
2054 };
2055
2056 vf->vf_ver = *(struct virtchnl_version_info *)msg;
2057 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
2058 if (VF_IS_V10(&vf->vf_ver))
2059 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
2060 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
2061 0, (u8 *)&info,
2062 sizeof(struct virtchnl_version_info));
2063 }
2064
2065 /**
2066 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
2067 * @vf: pointer to VF structure
2068 **/
2069 static void i40e_del_qch(struct i40e_vf *vf)
2070 {
2071 struct i40e_pf *pf = vf->pf;
2072 int i;
2073
2074 /* first element in the array belongs to primary VF VSI and we shouldn't
2075 * delete it. We should however delete the rest of the VSIs created
2076 */
2077 for (i = 1; i < vf->num_tc; i++) {
2078 if (vf->ch[i].vsi_idx) {
2079 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
2080 vf->ch[i].vsi_idx = 0;
2081 vf->ch[i].vsi_id = 0;
2082 }
2083 }
2084 }
2085
2086 /**
2087 * i40e_vc_get_max_frame_size
2088 * @vf: pointer to the VF
2089 *
2090 * Max frame size is determined based on the current port's max frame size and
2091 * whether a port VLAN is configured on this VF. The VF is not aware whether
2092 * it's in a port VLAN so the PF needs to account for this in max frame size
2093 * checks and sending the max frame size to the VF.
2094 **/
2095 static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2096 {
2097 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2098
2099 if (vf->port_vlan_id)
2100 max_frame_size -= VLAN_HLEN;
2101
2102 return max_frame_size;
2103 }
2104
2105 /**
2106 * i40e_vc_get_vf_resources_msg
2107 * @vf: pointer to the VF info
2108 * @msg: pointer to the msg buffer
2109 *
2110 * called from the VF to request its resources
2111 **/
2112 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2113 {
2114 struct virtchnl_vf_resource *vfres = NULL;
2115 struct i40e_pf *pf = vf->pf;
2116 struct i40e_vsi *vsi;
2117 int num_vsis = 1;
2118 int aq_ret = 0;
2119 size_t len = 0;
2120 int ret;
2121
2122 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
2123 aq_ret = -EINVAL;
2124 goto err;
2125 }
2126
2127 len = virtchnl_struct_size(vfres, vsi_res, num_vsis);
2128 vfres = kzalloc(len, GFP_KERNEL);
2129 if (!vfres) {
2130 aq_ret = -ENOMEM;
2131 len = 0;
2132 goto err;
2133 }
2134 if (VF_IS_V11(&vf->vf_ver))
2135 vf->driver_caps = *(u32 *)msg;
2136 else
2137 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2138 VIRTCHNL_VF_OFFLOAD_RSS_REG |
2139 VIRTCHNL_VF_OFFLOAD_VLAN;
2140
2141 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2142 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
2143 vsi = pf->vsi[vf->lan_vsi_idx];
2144 if (!vsi->info.pvid)
2145 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2146
2147 if (i40e_vf_client_capable(pf, vf->vf_id) &&
2148 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RDMA)) {
2149 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RDMA;
2150 set_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states);
2151 } else {
2152 clear_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states);
2153 }
2154
2155 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2156 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2157 } else {
2158 if (test_bit(I40E_HW_CAP_RSS_AQ, pf->hw.caps) &&
2159 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2160 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2161 else
2162 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2163 }
2164
2165 if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE, pf->hw.caps)) {
2166 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2167 vfres->vf_cap_flags |=
2168 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2169 }
2170
2171 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2172 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2173
2174 if (test_bit(I40E_HW_CAP_OUTER_UDP_CSUM, pf->hw.caps) &&
2175 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2176 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2177
2178 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2179 if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
2180 dev_err(&pf->pdev->dev,
2181 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2182 vf->vf_id);
2183 aq_ret = -EINVAL;
2184 goto err;
2185 }
2186 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2187 }
2188
2189 if (test_bit(I40E_HW_CAP_WB_ON_ITR, pf->hw.caps)) {
2190 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2191 vfres->vf_cap_flags |=
2192 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2193 }
2194
2195 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2196 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2197
2198 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2199 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2200
2201 vfres->num_vsis = num_vsis;
2202 vfres->num_queue_pairs = vf->num_queue_pairs;
2203 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2204 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2205 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2206 vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2207
2208 if (vf->lan_vsi_idx) {
2209 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2210 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2211 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2212 /* VFs only use TC 0 */
2213 vfres->vsi_res[0].qset_handle
2214 = le16_to_cpu(vsi->info.qs_handle[0]);
2215 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) {
2216 spin_lock_bh(&vsi->mac_filter_hash_lock);
2217 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
2218 eth_zero_addr(vf->default_lan_addr.addr);
2219 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2220 }
2221 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2222 vf->default_lan_addr.addr);
2223 }
2224 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2225
2226 err:
2227 /* send the response back to the VF */
2228 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2229 aq_ret, (u8 *)vfres, len);
2230
2231 kfree(vfres);
2232 return ret;
2233 }
2234
2235 /**
2236 * i40e_vc_config_promiscuous_mode_msg
2237 * @vf: pointer to the VF info
2238 * @msg: pointer to the msg buffer
2239 *
2240 * called from the VF to configure the promiscuous mode of
2241 * VF vsis
2242 **/
2243 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2244 {
2245 struct virtchnl_promisc_info *info =
2246 (struct virtchnl_promisc_info *)msg;
2247 struct i40e_pf *pf = vf->pf;
2248 bool allmulti = false;
2249 bool alluni = false;
2250 int aq_ret = 0;
2251
2252 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2253 aq_ret = -EINVAL;
2254 goto err_out;
2255 }
2256 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2257 dev_err(&pf->pdev->dev,
2258 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2259 vf->vf_id);
2260
2261 /* Lie to the VF on purpose, because this is an error we can
2262 * ignore. Unprivileged VF is not a virtual channel error.
2263 */
2264 aq_ret = 0;
2265 goto err_out;
2266 }
2267
2268 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2269 aq_ret = -EINVAL;
2270 goto err_out;
2271 }
2272
2273 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2274 aq_ret = -EINVAL;
2275 goto err_out;
2276 }
2277
2278 /* Multicast promiscuous handling*/
2279 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2280 allmulti = true;
2281
2282 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2283 alluni = true;
2284 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2285 alluni);
2286 if (aq_ret)
2287 goto err_out;
2288
2289 if (allmulti) {
2290 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2291 &vf->vf_states))
2292 dev_info(&pf->pdev->dev,
2293 "VF %d successfully set multicast promiscuous mode\n",
2294 vf->vf_id);
2295 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2296 &vf->vf_states))
2297 dev_info(&pf->pdev->dev,
2298 "VF %d successfully unset multicast promiscuous mode\n",
2299 vf->vf_id);
2300
2301 if (alluni) {
2302 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2303 &vf->vf_states))
2304 dev_info(&pf->pdev->dev,
2305 "VF %d successfully set unicast promiscuous mode\n",
2306 vf->vf_id);
2307 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2308 &vf->vf_states))
2309 dev_info(&pf->pdev->dev,
2310 "VF %d successfully unset unicast promiscuous mode\n",
2311 vf->vf_id);
2312
2313 err_out:
2314 /* send the response to the VF */
2315 return i40e_vc_send_resp_to_vf(vf,
2316 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2317 aq_ret);
2318 }
2319
2320 /**
2321 * i40e_vc_config_queues_msg
2322 * @vf: pointer to the VF info
2323 * @msg: pointer to the msg buffer
2324 *
2325 * called from the VF to configure the rx/tx
2326 * queues
2327 **/
2328 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2329 {
2330 struct virtchnl_vsi_queue_config_info *qci =
2331 (struct virtchnl_vsi_queue_config_info *)msg;
2332 struct virtchnl_queue_pair_info *qpi;
2333 u16 vsi_id, vsi_queue_id = 0;
2334 struct i40e_pf *pf = vf->pf;
2335 int i, j = 0, idx = 0;
2336 struct i40e_vsi *vsi;
2337 u16 num_qps_all = 0;
2338 int aq_ret = 0;
2339
2340 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2341 aq_ret = -EINVAL;
2342 goto error_param;
2343 }
2344
2345 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2346 aq_ret = -EINVAL;
2347 goto error_param;
2348 }
2349
2350 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2351 aq_ret = -EINVAL;
2352 goto error_param;
2353 }
2354
2355 if (vf->adq_enabled) {
2356 for (i = 0; i < vf->num_tc; i++)
2357 num_qps_all += vf->ch[i].num_qps;
2358 if (num_qps_all != qci->num_queue_pairs) {
2359 aq_ret = -EINVAL;
2360 goto error_param;
2361 }
2362 }
2363
2364 vsi_id = qci->vsi_id;
2365
2366 for (i = 0; i < qci->num_queue_pairs; i++) {
2367 qpi = &qci->qpair[i];
2368
2369 if (!vf->adq_enabled) {
2370 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2371 qpi->txq.queue_id)) {
2372 aq_ret = -EINVAL;
2373 goto error_param;
2374 }
2375
2376 vsi_queue_id = qpi->txq.queue_id;
2377
2378 if (qpi->txq.vsi_id != qci->vsi_id ||
2379 qpi->rxq.vsi_id != qci->vsi_id ||
2380 qpi->rxq.queue_id != vsi_queue_id) {
2381 aq_ret = -EINVAL;
2382 goto error_param;
2383 }
2384 }
2385
2386 if (vf->adq_enabled) {
2387 if (idx >= ARRAY_SIZE(vf->ch)) {
2388 aq_ret = -ENODEV;
2389 goto error_param;
2390 }
2391 vsi_id = vf->ch[idx].vsi_id;
2392 }
2393
2394 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2395 &qpi->rxq) ||
2396 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2397 &qpi->txq)) {
2398 aq_ret = -EINVAL;
2399 goto error_param;
2400 }
2401
2402 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2403 * VF does not know about these additional VSIs and all
2404 * it cares is about its own queues. PF configures these queues
2405 * to its appropriate VSIs based on TC mapping
2406 */
2407 if (vf->adq_enabled) {
2408 if (idx >= ARRAY_SIZE(vf->ch)) {
2409 aq_ret = -ENODEV;
2410 goto error_param;
2411 }
2412 if (j == (vf->ch[idx].num_qps - 1)) {
2413 idx++;
2414 j = 0; /* resetting the queue count */
2415 vsi_queue_id = 0;
2416 } else {
2417 j++;
2418 vsi_queue_id++;
2419 }
2420 }
2421 }
2422 /* set vsi num_queue_pairs in use to num configured by VF */
2423 if (!vf->adq_enabled) {
2424 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2425 qci->num_queue_pairs;
2426 } else {
2427 for (i = 0; i < vf->num_tc; i++) {
2428 vsi = pf->vsi[vf->ch[i].vsi_idx];
2429 vsi->num_queue_pairs = vf->ch[i].num_qps;
2430
2431 if (i40e_update_adq_vsi_queues(vsi, i)) {
2432 aq_ret = -EIO;
2433 goto error_param;
2434 }
2435 }
2436 }
2437
2438 error_param:
2439 /* send the response to the VF */
2440 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2441 aq_ret);
2442 }
2443
2444 /**
2445 * i40e_validate_queue_map - check queue map is valid
2446 * @vf: the VF structure pointer
2447 * @vsi_id: vsi id
2448 * @queuemap: Tx or Rx queue map
2449 *
2450 * check if Tx or Rx queue map is valid
2451 **/
2452 static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2453 unsigned long queuemap)
2454 {
2455 u16 vsi_queue_id, queue_id;
2456
2457 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2458 if (vf->adq_enabled) {
2459 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2460 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2461 } else {
2462 queue_id = vsi_queue_id;
2463 }
2464
2465 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2466 return -EINVAL;
2467 }
2468
2469 return 0;
2470 }
2471
2472 /**
2473 * i40e_vc_config_irq_map_msg
2474 * @vf: pointer to the VF info
2475 * @msg: pointer to the msg buffer
2476 *
2477 * called from the VF to configure the irq to
2478 * queue map
2479 **/
2480 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2481 {
2482 struct virtchnl_irq_map_info *irqmap_info =
2483 (struct virtchnl_irq_map_info *)msg;
2484 struct virtchnl_vector_map *map;
2485 int aq_ret = 0;
2486 u16 vsi_id;
2487 int i;
2488
2489 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2490 aq_ret = -EINVAL;
2491 goto error_param;
2492 }
2493
2494 if (irqmap_info->num_vectors >
2495 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2496 aq_ret = -EINVAL;
2497 goto error_param;
2498 }
2499
2500 for (i = 0; i < irqmap_info->num_vectors; i++) {
2501 map = &irqmap_info->vecmap[i];
2502 /* validate msg params */
2503 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2504 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2505 aq_ret = -EINVAL;
2506 goto error_param;
2507 }
2508 vsi_id = map->vsi_id;
2509
2510 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2511 aq_ret = -EINVAL;
2512 goto error_param;
2513 }
2514
2515 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2516 aq_ret = -EINVAL;
2517 goto error_param;
2518 }
2519
2520 i40e_config_irq_link_list(vf, vsi_id, map);
2521 }
2522 error_param:
2523 /* send the response to the VF */
2524 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2525 aq_ret);
2526 }
2527
2528 /**
2529 * i40e_ctrl_vf_tx_rings
2530 * @vsi: the SRIOV VSI being configured
2531 * @q_map: bit map of the queues to be enabled
2532 * @enable: start or stop the queue
2533 **/
2534 static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2535 bool enable)
2536 {
2537 struct i40e_pf *pf = vsi->back;
2538 int ret = 0;
2539 u16 q_id;
2540
2541 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2542 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2543 vsi->base_queue + q_id,
2544 false /*is xdp*/, enable);
2545 if (ret)
2546 break;
2547 }
2548 return ret;
2549 }
2550
2551 /**
2552 * i40e_ctrl_vf_rx_rings
2553 * @vsi: the SRIOV VSI being configured
2554 * @q_map: bit map of the queues to be enabled
2555 * @enable: start or stop the queue
2556 **/
2557 static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2558 bool enable)
2559 {
2560 struct i40e_pf *pf = vsi->back;
2561 int ret = 0;
2562 u16 q_id;
2563
2564 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2565 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2566 enable);
2567 if (ret)
2568 break;
2569 }
2570 return ret;
2571 }
2572
2573 /**
2574 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2575 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2576 *
2577 * Returns true if validation was successful, else false.
2578 */
2579 static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2580 {
2581 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2582 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2583 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2584 return false;
2585
2586 return true;
2587 }
2588
2589 /**
2590 * i40e_vc_enable_queues_msg
2591 * @vf: pointer to the VF info
2592 * @msg: pointer to the msg buffer
2593 *
2594 * called from the VF to enable all or specific queue(s)
2595 **/
2596 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2597 {
2598 struct virtchnl_queue_select *vqs =
2599 (struct virtchnl_queue_select *)msg;
2600 struct i40e_pf *pf = vf->pf;
2601 int aq_ret = 0;
2602 int i;
2603
2604 if (vf->is_disabled_from_host) {
2605 aq_ret = -EPERM;
2606 dev_info(&pf->pdev->dev,
2607 "Admin has disabled VF %d, will not enable queues\n",
2608 vf->vf_id);
2609 goto error_param;
2610 }
2611
2612 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2613 aq_ret = -EINVAL;
2614 goto error_param;
2615 }
2616
2617 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2618 aq_ret = -EINVAL;
2619 goto error_param;
2620 }
2621
2622 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2623 aq_ret = -EINVAL;
2624 goto error_param;
2625 }
2626
2627 /* Use the queue bit map sent by the VF */
2628 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2629 true)) {
2630 aq_ret = -EIO;
2631 goto error_param;
2632 }
2633 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2634 true)) {
2635 aq_ret = -EIO;
2636 goto error_param;
2637 }
2638
2639 /* need to start the rings for additional ADq VSI's as well */
2640 if (vf->adq_enabled) {
2641 /* zero belongs to LAN VSI */
2642 for (i = 1; i < vf->num_tc; i++) {
2643 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2644 aq_ret = -EIO;
2645 }
2646 }
2647
2648 error_param:
2649 /* send the response to the VF */
2650 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2651 aq_ret);
2652 }
2653
2654 /**
2655 * i40e_vc_disable_queues_msg
2656 * @vf: pointer to the VF info
2657 * @msg: pointer to the msg buffer
2658 *
2659 * called from the VF to disable all or specific
2660 * queue(s)
2661 **/
2662 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2663 {
2664 struct virtchnl_queue_select *vqs =
2665 (struct virtchnl_queue_select *)msg;
2666 struct i40e_pf *pf = vf->pf;
2667 int aq_ret = 0;
2668
2669 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2670 aq_ret = -EINVAL;
2671 goto error_param;
2672 }
2673
2674 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2675 aq_ret = -EINVAL;
2676 goto error_param;
2677 }
2678
2679 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2680 aq_ret = -EINVAL;
2681 goto error_param;
2682 }
2683
2684 /* Use the queue bit map sent by the VF */
2685 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2686 false)) {
2687 aq_ret = -EIO;
2688 goto error_param;
2689 }
2690 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2691 false)) {
2692 aq_ret = -EIO;
2693 goto error_param;
2694 }
2695 error_param:
2696 /* send the response to the VF */
2697 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2698 aq_ret);
2699 }
2700
2701 /**
2702 * i40e_check_enough_queue - find big enough queue number
2703 * @vf: pointer to the VF info
2704 * @needed: the number of items needed
2705 *
2706 * Returns the base item index of the queue, or negative for error
2707 **/
2708 static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2709 {
2710 unsigned int i, cur_queues, more, pool_size;
2711 struct i40e_lump_tracking *pile;
2712 struct i40e_pf *pf = vf->pf;
2713 struct i40e_vsi *vsi;
2714
2715 vsi = pf->vsi[vf->lan_vsi_idx];
2716 cur_queues = vsi->alloc_queue_pairs;
2717
2718 /* if current allocated queues are enough for need */
2719 if (cur_queues >= needed)
2720 return vsi->base_queue;
2721
2722 pile = pf->qp_pile;
2723 if (cur_queues > 0) {
2724 /* if the allocated queues are not zero
2725 * just check if there are enough queues for more
2726 * behind the allocated queues.
2727 */
2728 more = needed - cur_queues;
2729 for (i = vsi->base_queue + cur_queues;
2730 i < pile->num_entries; i++) {
2731 if (pile->list[i] & I40E_PILE_VALID_BIT)
2732 break;
2733
2734 if (more-- == 1)
2735 /* there is enough */
2736 return vsi->base_queue;
2737 }
2738 }
2739
2740 pool_size = 0;
2741 for (i = 0; i < pile->num_entries; i++) {
2742 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2743 pool_size = 0;
2744 continue;
2745 }
2746 if (needed <= ++pool_size)
2747 /* there is enough */
2748 return i;
2749 }
2750
2751 return -ENOMEM;
2752 }
2753
2754 /**
2755 * i40e_vc_request_queues_msg
2756 * @vf: pointer to the VF info
2757 * @msg: pointer to the msg buffer
2758 *
2759 * VFs get a default number of queues but can use this message to request a
2760 * different number. If the request is successful, PF will reset the VF and
2761 * return 0. If unsuccessful, PF will send message informing VF of number of
2762 * available queues and return result of sending VF a message.
2763 **/
2764 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2765 {
2766 struct virtchnl_vf_res_request *vfres =
2767 (struct virtchnl_vf_res_request *)msg;
2768 u16 req_pairs = vfres->num_queue_pairs;
2769 u8 cur_pairs = vf->num_queue_pairs;
2770 struct i40e_pf *pf = vf->pf;
2771
2772 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2773 return -EINVAL;
2774
2775 if (req_pairs > I40E_MAX_VF_QUEUES) {
2776 dev_err(&pf->pdev->dev,
2777 "VF %d tried to request more than %d queues.\n",
2778 vf->vf_id,
2779 I40E_MAX_VF_QUEUES);
2780 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2781 } else if (req_pairs - cur_pairs > pf->queues_left) {
2782 dev_warn(&pf->pdev->dev,
2783 "VF %d requested %d more queues, but only %d left.\n",
2784 vf->vf_id,
2785 req_pairs - cur_pairs,
2786 pf->queues_left);
2787 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2788 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2789 dev_warn(&pf->pdev->dev,
2790 "VF %d requested %d more queues, but there is not enough for it.\n",
2791 vf->vf_id,
2792 req_pairs - cur_pairs);
2793 vfres->num_queue_pairs = cur_pairs;
2794 } else {
2795 /* successful request */
2796 vf->num_req_queues = req_pairs;
2797 i40e_vc_reset_vf(vf, true);
2798 return 0;
2799 }
2800
2801 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2802 (u8 *)vfres, sizeof(*vfres));
2803 }
2804
2805 /**
2806 * i40e_vc_get_stats_msg
2807 * @vf: pointer to the VF info
2808 * @msg: pointer to the msg buffer
2809 *
2810 * called from the VF to get vsi stats
2811 **/
2812 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2813 {
2814 struct virtchnl_queue_select *vqs =
2815 (struct virtchnl_queue_select *)msg;
2816 struct i40e_pf *pf = vf->pf;
2817 struct i40e_eth_stats stats;
2818 int aq_ret = 0;
2819 struct i40e_vsi *vsi;
2820
2821 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2822
2823 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2824 aq_ret = -EINVAL;
2825 goto error_param;
2826 }
2827
2828 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2829 aq_ret = -EINVAL;
2830 goto error_param;
2831 }
2832
2833 vsi = pf->vsi[vf->lan_vsi_idx];
2834 if (!vsi) {
2835 aq_ret = -EINVAL;
2836 goto error_param;
2837 }
2838 i40e_update_eth_stats(vsi);
2839 stats = vsi->eth_stats;
2840
2841 error_param:
2842 /* send the response back to the VF */
2843 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2844 (u8 *)&stats, sizeof(stats));
2845 }
2846
2847 /**
2848 * i40e_can_vf_change_mac
2849 * @vf: pointer to the VF info
2850 *
2851 * Return true if the VF is allowed to change its MAC filters, false otherwise
2852 */
2853 static bool i40e_can_vf_change_mac(struct i40e_vf *vf)
2854 {
2855 /* If the VF MAC address has been set administratively (via the
2856 * ndo_set_vf_mac command), then deny permission to the VF to
2857 * add/delete unicast MAC addresses, unless the VF is trusted
2858 */
2859 if (vf->pf_set_mac && !vf->trusted)
2860 return false;
2861
2862 return true;
2863 }
2864
2865 #define I40E_MAX_MACVLAN_PER_HW 3072
2866 #define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \
2867 (num_ports))
2868 /* If the VF is not trusted restrict the number of MAC/VLAN it can program
2869 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2870 */
2871 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2872 #define I40E_VC_MAX_VLAN_PER_VF 16
2873
2874 #define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \
2875 ({ typeof(vf_num) vf_num_ = (vf_num); \
2876 typeof(num_ports) num_ports_ = (num_ports); \
2877 ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \
2878 I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \
2879 I40E_VC_MAX_MAC_ADDR_PER_VF; })
2880 /**
2881 * i40e_check_vf_permission
2882 * @vf: pointer to the VF info
2883 * @al: MAC address list from virtchnl
2884 *
2885 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2886 * if any address in the list is not valid. Checks the following conditions:
2887 *
2888 * 1) broadcast and zero addresses are never valid
2889 * 2) unicast addresses are not allowed if the VMM has administratively set
2890 * the VF MAC address, unless the VF is marked as privileged.
2891 * 3) There is enough space to add all the addresses.
2892 *
2893 * Note that to guarantee consistency, it is expected this function be called
2894 * while holding the mac_filter_hash_lock, as otherwise the current number of
2895 * addresses might not be accurate.
2896 **/
2897 static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2898 struct virtchnl_ether_addr_list *al)
2899 {
2900 struct i40e_pf *pf = vf->pf;
2901 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2902 struct i40e_hw *hw = &pf->hw;
2903 int mac2add_cnt = 0;
2904 int i;
2905
2906 for (i = 0; i < al->num_elements; i++) {
2907 struct i40e_mac_filter *f;
2908 u8 *addr = al->list[i].addr;
2909
2910 if (is_broadcast_ether_addr(addr) ||
2911 is_zero_ether_addr(addr)) {
2912 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2913 addr);
2914 return -EINVAL;
2915 }
2916
2917 /* If the host VMM administrator has set the VF MAC address
2918 * administratively via the ndo_set_vf_mac command then deny
2919 * permission to the VF to add or delete unicast MAC addresses.
2920 * Unless the VF is privileged and then it can do whatever.
2921 * The VF may request to set the MAC address filter already
2922 * assigned to it so do not return an error in that case.
2923 */
2924 if (!i40e_can_vf_change_mac(vf) &&
2925 !is_multicast_ether_addr(addr) &&
2926 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2927 dev_err(&pf->pdev->dev,
2928 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2929 return -EPERM;
2930 }
2931
2932 /*count filters that really will be added*/
2933 f = i40e_find_mac(vsi, addr);
2934 if (!f)
2935 ++mac2add_cnt;
2936 }
2937
2938 /* If this VF is not privileged, then we can't add more than a limited
2939 * number of addresses. Check to make sure that the additions do not
2940 * push us over the limit.
2941 */
2942 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2943 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2944 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2945 dev_err(&pf->pdev->dev,
2946 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2947 return -EPERM;
2948 }
2949 /* If this VF is trusted, it can use more resources than untrusted.
2950 * However to ensure that every trusted VF has appropriate number of
2951 * resources, divide whole pool of resources per port and then across
2952 * all VFs.
2953 */
2954 } else {
2955 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2956 I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
2957 hw->num_ports)) {
2958 dev_err(&pf->pdev->dev,
2959 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
2960 return -EPERM;
2961 }
2962 }
2963 return 0;
2964 }
2965
2966 /**
2967 * i40e_vc_ether_addr_type - get type of virtchnl_ether_addr
2968 * @vc_ether_addr: used to extract the type
2969 **/
2970 static u8
2971 i40e_vc_ether_addr_type(struct virtchnl_ether_addr *vc_ether_addr)
2972 {
2973 return vc_ether_addr->type & VIRTCHNL_ETHER_ADDR_TYPE_MASK;
2974 }
2975
2976 /**
2977 * i40e_is_vc_addr_legacy
2978 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2979 *
2980 * check if the MAC address is from an older VF
2981 **/
2982 static bool
2983 i40e_is_vc_addr_legacy(struct virtchnl_ether_addr *vc_ether_addr)
2984 {
2985 return i40e_vc_ether_addr_type(vc_ether_addr) ==
2986 VIRTCHNL_ETHER_ADDR_LEGACY;
2987 }
2988
2989 /**
2990 * i40e_is_vc_addr_primary
2991 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2992 *
2993 * check if the MAC address is the VF's primary MAC
2994 * This function should only be called when the MAC address in
2995 * virtchnl_ether_addr is a valid unicast MAC
2996 **/
2997 static bool
2998 i40e_is_vc_addr_primary(struct virtchnl_ether_addr *vc_ether_addr)
2999 {
3000 return i40e_vc_ether_addr_type(vc_ether_addr) ==
3001 VIRTCHNL_ETHER_ADDR_PRIMARY;
3002 }
3003
3004 /**
3005 * i40e_update_vf_mac_addr
3006 * @vf: VF to update
3007 * @vc_ether_addr: structure from VIRTCHNL with MAC to add
3008 *
3009 * update the VF's cached hardware MAC if allowed
3010 **/
3011 static void
3012 i40e_update_vf_mac_addr(struct i40e_vf *vf,
3013 struct virtchnl_ether_addr *vc_ether_addr)
3014 {
3015 u8 *mac_addr = vc_ether_addr->addr;
3016
3017 if (!is_valid_ether_addr(mac_addr))
3018 return;
3019
3020 /* If request to add MAC filter is a primary request update its default
3021 * MAC address with the requested one. If it is a legacy request then
3022 * check if current default is empty if so update the default MAC
3023 */
3024 if (i40e_is_vc_addr_primary(vc_ether_addr)) {
3025 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3026 } else if (i40e_is_vc_addr_legacy(vc_ether_addr)) {
3027 if (is_zero_ether_addr(vf->default_lan_addr.addr))
3028 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3029 }
3030 }
3031
3032 /**
3033 * i40e_vc_add_mac_addr_msg
3034 * @vf: pointer to the VF info
3035 * @msg: pointer to the msg buffer
3036 *
3037 * add guest mac address filter
3038 **/
3039 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3040 {
3041 struct virtchnl_ether_addr_list *al =
3042 (struct virtchnl_ether_addr_list *)msg;
3043 struct i40e_pf *pf = vf->pf;
3044 struct i40e_vsi *vsi = NULL;
3045 int ret = 0;
3046 int i;
3047
3048 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3049 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3050 ret = -EINVAL;
3051 goto error_param;
3052 }
3053
3054 vsi = pf->vsi[vf->lan_vsi_idx];
3055
3056 /* Lock once, because all function inside for loop accesses VSI's
3057 * MAC filter list which needs to be protected using same lock.
3058 */
3059 spin_lock_bh(&vsi->mac_filter_hash_lock);
3060
3061 ret = i40e_check_vf_permission(vf, al);
3062 if (ret) {
3063 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3064 goto error_param;
3065 }
3066
3067 /* add new addresses to the list */
3068 for (i = 0; i < al->num_elements; i++) {
3069 struct i40e_mac_filter *f;
3070
3071 f = i40e_find_mac(vsi, al->list[i].addr);
3072 if (!f) {
3073 f = i40e_add_mac_filter(vsi, al->list[i].addr);
3074
3075 if (!f) {
3076 dev_err(&pf->pdev->dev,
3077 "Unable to add MAC filter %pM for VF %d\n",
3078 al->list[i].addr, vf->vf_id);
3079 ret = -EINVAL;
3080 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3081 goto error_param;
3082 }
3083 }
3084 i40e_update_vf_mac_addr(vf, &al->list[i]);
3085 }
3086 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3087
3088 /* program the updated filter list */
3089 ret = i40e_sync_vsi_filters(vsi);
3090 if (ret)
3091 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3092 vf->vf_id, ret);
3093
3094 error_param:
3095 /* send the response to the VF */
3096 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
3097 ret, NULL, 0);
3098 }
3099
3100 /**
3101 * i40e_vc_del_mac_addr_msg
3102 * @vf: pointer to the VF info
3103 * @msg: pointer to the msg buffer
3104 *
3105 * remove guest mac address filter
3106 **/
3107 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3108 {
3109 struct virtchnl_ether_addr_list *al =
3110 (struct virtchnl_ether_addr_list *)msg;
3111 bool was_unimac_deleted = false;
3112 struct i40e_pf *pf = vf->pf;
3113 struct i40e_vsi *vsi = NULL;
3114 int ret = 0;
3115 int i;
3116
3117 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3118 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3119 ret = -EINVAL;
3120 goto error_param;
3121 }
3122
3123 for (i = 0; i < al->num_elements; i++) {
3124 if (is_broadcast_ether_addr(al->list[i].addr) ||
3125 is_zero_ether_addr(al->list[i].addr)) {
3126 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
3127 al->list[i].addr, vf->vf_id);
3128 ret = -EINVAL;
3129 goto error_param;
3130 }
3131 }
3132 vsi = pf->vsi[vf->lan_vsi_idx];
3133
3134 spin_lock_bh(&vsi->mac_filter_hash_lock);
3135 /* delete addresses from the list */
3136 for (i = 0; i < al->num_elements; i++) {
3137 const u8 *addr = al->list[i].addr;
3138
3139 /* Allow to delete VF primary MAC only if it was not set
3140 * administratively by PF or if VF is trusted.
3141 */
3142 if (ether_addr_equal(addr, vf->default_lan_addr.addr)) {
3143 if (i40e_can_vf_change_mac(vf))
3144 was_unimac_deleted = true;
3145 else
3146 continue;
3147 }
3148
3149 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
3150 ret = -EINVAL;
3151 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3152 goto error_param;
3153 }
3154 }
3155
3156 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3157
3158 if (was_unimac_deleted)
3159 eth_zero_addr(vf->default_lan_addr.addr);
3160
3161 /* program the updated filter list */
3162 ret = i40e_sync_vsi_filters(vsi);
3163 if (ret)
3164 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3165 vf->vf_id, ret);
3166
3167 if (vf->trusted && was_unimac_deleted) {
3168 struct i40e_mac_filter *f;
3169 struct hlist_node *h;
3170 u8 *macaddr = NULL;
3171 int bkt;
3172
3173 /* set last unicast mac address as default */
3174 spin_lock_bh(&vsi->mac_filter_hash_lock);
3175 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3176 if (is_valid_ether_addr(f->macaddr))
3177 macaddr = f->macaddr;
3178 }
3179 if (macaddr)
3180 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
3181 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3182 }
3183 error_param:
3184 /* send the response to the VF */
3185 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3186 }
3187
3188 /**
3189 * i40e_vc_add_vlan_msg
3190 * @vf: pointer to the VF info
3191 * @msg: pointer to the msg buffer
3192 *
3193 * program guest vlan id
3194 **/
3195 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3196 {
3197 struct virtchnl_vlan_filter_list *vfl =
3198 (struct virtchnl_vlan_filter_list *)msg;
3199 struct i40e_pf *pf = vf->pf;
3200 struct i40e_vsi *vsi = NULL;
3201 int aq_ret = 0;
3202 int i;
3203
3204 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3205 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3206 dev_err(&pf->pdev->dev,
3207 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3208 goto error_param;
3209 }
3210 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3211 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3212 aq_ret = -EINVAL;
3213 goto error_param;
3214 }
3215
3216 for (i = 0; i < vfl->num_elements; i++) {
3217 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3218 aq_ret = -EINVAL;
3219 dev_err(&pf->pdev->dev,
3220 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3221 goto error_param;
3222 }
3223 }
3224 vsi = pf->vsi[vf->lan_vsi_idx];
3225 if (vsi->info.pvid) {
3226 aq_ret = -EINVAL;
3227 goto error_param;
3228 }
3229
3230 i40e_vlan_stripping_enable(vsi);
3231 for (i = 0; i < vfl->num_elements; i++) {
3232 /* add new VLAN filter */
3233 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3234 if (!ret)
3235 vf->num_vlan++;
3236
3237 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3238 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3239 true,
3240 vfl->vlan_id[i],
3241 NULL);
3242 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3243 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3244 true,
3245 vfl->vlan_id[i],
3246 NULL);
3247
3248 if (ret)
3249 dev_err(&pf->pdev->dev,
3250 "Unable to add VLAN filter %d for VF %d, error %d\n",
3251 vfl->vlan_id[i], vf->vf_id, ret);
3252 }
3253
3254 error_param:
3255 /* send the response to the VF */
3256 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3257 }
3258
3259 /**
3260 * i40e_vc_remove_vlan_msg
3261 * @vf: pointer to the VF info
3262 * @msg: pointer to the msg buffer
3263 *
3264 * remove programmed guest vlan id
3265 **/
3266 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3267 {
3268 struct virtchnl_vlan_filter_list *vfl =
3269 (struct virtchnl_vlan_filter_list *)msg;
3270 struct i40e_pf *pf = vf->pf;
3271 struct i40e_vsi *vsi = NULL;
3272 int aq_ret = 0;
3273 int i;
3274
3275 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3276 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3277 aq_ret = -EINVAL;
3278 goto error_param;
3279 }
3280
3281 for (i = 0; i < vfl->num_elements; i++) {
3282 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3283 aq_ret = -EINVAL;
3284 goto error_param;
3285 }
3286 }
3287
3288 vsi = pf->vsi[vf->lan_vsi_idx];
3289 if (vsi->info.pvid) {
3290 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3291 aq_ret = -EINVAL;
3292 goto error_param;
3293 }
3294
3295 for (i = 0; i < vfl->num_elements; i++) {
3296 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3297 vf->num_vlan--;
3298
3299 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3300 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3301 false,
3302 vfl->vlan_id[i],
3303 NULL);
3304 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3305 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3306 false,
3307 vfl->vlan_id[i],
3308 NULL);
3309 }
3310
3311 error_param:
3312 /* send the response to the VF */
3313 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3314 }
3315
3316 /**
3317 * i40e_vc_rdma_msg
3318 * @vf: pointer to the VF info
3319 * @msg: pointer to the msg buffer
3320 * @msglen: msg length
3321 *
3322 * called from the VF for the iwarp msgs
3323 **/
3324 static int i40e_vc_rdma_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3325 {
3326 struct i40e_pf *pf = vf->pf;
3327 struct i40e_vsi *main_vsi;
3328 int aq_ret = 0;
3329 int abs_vf_id;
3330
3331 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3332 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3333 aq_ret = -EINVAL;
3334 goto error_param;
3335 }
3336
3337 main_vsi = i40e_pf_get_main_vsi(pf);
3338 abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3339 i40e_notify_client_of_vf_msg(main_vsi, abs_vf_id, msg, msglen);
3340
3341 error_param:
3342 /* send the response to the VF */
3343 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_RDMA,
3344 aq_ret);
3345 }
3346
3347 /**
3348 * i40e_vc_rdma_qvmap_msg
3349 * @vf: pointer to the VF info
3350 * @msg: pointer to the msg buffer
3351 * @config: config qvmap or release it
3352 *
3353 * called from the VF for the iwarp msgs
3354 **/
3355 static int i40e_vc_rdma_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3356 {
3357 struct virtchnl_rdma_qvlist_info *qvlist_info =
3358 (struct virtchnl_rdma_qvlist_info *)msg;
3359 int aq_ret = 0;
3360
3361 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3362 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3363 aq_ret = -EINVAL;
3364 goto error_param;
3365 }
3366
3367 if (config) {
3368 if (i40e_config_rdma_qvlist(vf, qvlist_info))
3369 aq_ret = -EINVAL;
3370 } else {
3371 i40e_release_rdma_qvlist(vf);
3372 }
3373
3374 error_param:
3375 /* send the response to the VF */
3376 return i40e_vc_send_resp_to_vf(vf,
3377 config ? VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP :
3378 VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP,
3379 aq_ret);
3380 }
3381
3382 /**
3383 * i40e_vc_config_rss_key
3384 * @vf: pointer to the VF info
3385 * @msg: pointer to the msg buffer
3386 *
3387 * Configure the VF's RSS key
3388 **/
3389 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3390 {
3391 struct virtchnl_rss_key *vrk =
3392 (struct virtchnl_rss_key *)msg;
3393 struct i40e_pf *pf = vf->pf;
3394 struct i40e_vsi *vsi = NULL;
3395 int aq_ret = 0;
3396
3397 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3398 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3399 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3400 aq_ret = -EINVAL;
3401 goto err;
3402 }
3403
3404 vsi = pf->vsi[vf->lan_vsi_idx];
3405 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3406 err:
3407 /* send the response to the VF */
3408 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3409 aq_ret);
3410 }
3411
3412 /**
3413 * i40e_vc_config_rss_lut
3414 * @vf: pointer to the VF info
3415 * @msg: pointer to the msg buffer
3416 *
3417 * Configure the VF's RSS LUT
3418 **/
3419 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3420 {
3421 struct virtchnl_rss_lut *vrl =
3422 (struct virtchnl_rss_lut *)msg;
3423 struct i40e_pf *pf = vf->pf;
3424 struct i40e_vsi *vsi = NULL;
3425 int aq_ret = 0;
3426 u16 i;
3427
3428 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3429 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3430 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3431 aq_ret = -EINVAL;
3432 goto err;
3433 }
3434
3435 for (i = 0; i < vrl->lut_entries; i++)
3436 if (vrl->lut[i] >= vf->num_queue_pairs) {
3437 aq_ret = -EINVAL;
3438 goto err;
3439 }
3440
3441 vsi = pf->vsi[vf->lan_vsi_idx];
3442 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3443 /* send the response to the VF */
3444 err:
3445 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3446 aq_ret);
3447 }
3448
3449 /**
3450 * i40e_vc_get_rss_hena
3451 * @vf: pointer to the VF info
3452 * @msg: pointer to the msg buffer
3453 *
3454 * Return the RSS HENA bits allowed by the hardware
3455 **/
3456 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3457 {
3458 struct virtchnl_rss_hena *vrh = NULL;
3459 struct i40e_pf *pf = vf->pf;
3460 int aq_ret = 0;
3461 int len = 0;
3462
3463 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3464 aq_ret = -EINVAL;
3465 goto err;
3466 }
3467 len = sizeof(struct virtchnl_rss_hena);
3468
3469 vrh = kzalloc(len, GFP_KERNEL);
3470 if (!vrh) {
3471 aq_ret = -ENOMEM;
3472 len = 0;
3473 goto err;
3474 }
3475 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3476 err:
3477 /* send the response back to the VF */
3478 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3479 aq_ret, (u8 *)vrh, len);
3480 kfree(vrh);
3481 return aq_ret;
3482 }
3483
3484 /**
3485 * i40e_vc_set_rss_hena
3486 * @vf: pointer to the VF info
3487 * @msg: pointer to the msg buffer
3488 *
3489 * Set the RSS HENA bits for the VF
3490 **/
3491 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3492 {
3493 struct virtchnl_rss_hena *vrh =
3494 (struct virtchnl_rss_hena *)msg;
3495 struct i40e_pf *pf = vf->pf;
3496 struct i40e_hw *hw = &pf->hw;
3497 int aq_ret = 0;
3498
3499 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3500 aq_ret = -EINVAL;
3501 goto err;
3502 }
3503 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3504 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3505 (u32)(vrh->hena >> 32));
3506
3507 /* send the response to the VF */
3508 err:
3509 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3510 }
3511
3512 /**
3513 * i40e_vc_enable_vlan_stripping
3514 * @vf: pointer to the VF info
3515 * @msg: pointer to the msg buffer
3516 *
3517 * Enable vlan header stripping for the VF
3518 **/
3519 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3520 {
3521 struct i40e_vsi *vsi;
3522 int aq_ret = 0;
3523
3524 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3525 aq_ret = -EINVAL;
3526 goto err;
3527 }
3528
3529 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3530 i40e_vlan_stripping_enable(vsi);
3531
3532 /* send the response to the VF */
3533 err:
3534 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3535 aq_ret);
3536 }
3537
3538 /**
3539 * i40e_vc_disable_vlan_stripping
3540 * @vf: pointer to the VF info
3541 * @msg: pointer to the msg buffer
3542 *
3543 * Disable vlan header stripping for the VF
3544 **/
3545 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3546 {
3547 struct i40e_vsi *vsi;
3548 int aq_ret = 0;
3549
3550 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3551 aq_ret = -EINVAL;
3552 goto err;
3553 }
3554
3555 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3556 i40e_vlan_stripping_disable(vsi);
3557
3558 /* send the response to the VF */
3559 err:
3560 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3561 aq_ret);
3562 }
3563
3564 /**
3565 * i40e_validate_cloud_filter
3566 * @vf: pointer to VF structure
3567 * @tc_filter: pointer to filter requested
3568 *
3569 * This function validates cloud filter programmed as TC filter for ADq
3570 **/
3571 static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3572 struct virtchnl_filter *tc_filter)
3573 {
3574 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3575 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3576 struct i40e_pf *pf = vf->pf;
3577 struct i40e_vsi *vsi = NULL;
3578 struct i40e_mac_filter *f;
3579 struct hlist_node *h;
3580 bool found = false;
3581 int bkt;
3582
3583 if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) {
3584 dev_info(&pf->pdev->dev,
3585 "VF %d: ADQ doesn't support this action (%d)\n",
3586 vf->vf_id, tc_filter->action);
3587 goto err;
3588 }
3589
3590 /* action_meta is TC number here to which the filter is applied */
3591 if (!tc_filter->action_meta ||
3592 tc_filter->action_meta > vf->num_tc) {
3593 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3594 vf->vf_id, tc_filter->action_meta);
3595 goto err;
3596 }
3597
3598 /* Check filter if it's programmed for advanced mode or basic mode.
3599 * There are two ADq modes (for VF only),
3600 * 1. Basic mode: intended to allow as many filter options as possible
3601 * to be added to a VF in Non-trusted mode. Main goal is
3602 * to add filters to its own MAC and VLAN id.
3603 * 2. Advanced mode: is for allowing filters to be applied other than
3604 * its own MAC or VLAN. This mode requires the VF to be
3605 * Trusted.
3606 */
3607 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3608 vsi = pf->vsi[vf->lan_vsi_idx];
3609 f = i40e_find_mac(vsi, data.dst_mac);
3610
3611 if (!f) {
3612 dev_info(&pf->pdev->dev,
3613 "Destination MAC %pM doesn't belong to VF %d\n",
3614 data.dst_mac, vf->vf_id);
3615 goto err;
3616 }
3617
3618 if (mask.vlan_id) {
3619 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3620 hlist) {
3621 if (f->vlan == ntohs(data.vlan_id)) {
3622 found = true;
3623 break;
3624 }
3625 }
3626 if (!found) {
3627 dev_info(&pf->pdev->dev,
3628 "VF %d doesn't have any VLAN id %u\n",
3629 vf->vf_id, ntohs(data.vlan_id));
3630 goto err;
3631 }
3632 }
3633 } else {
3634 /* Check if VF is trusted */
3635 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3636 dev_err(&pf->pdev->dev,
3637 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3638 vf->vf_id);
3639 return -EIO;
3640 }
3641 }
3642
3643 if (mask.dst_mac[0] & data.dst_mac[0]) {
3644 if (is_broadcast_ether_addr(data.dst_mac) ||
3645 is_zero_ether_addr(data.dst_mac)) {
3646 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3647 vf->vf_id, data.dst_mac);
3648 goto err;
3649 }
3650 }
3651
3652 if (mask.src_mac[0] & data.src_mac[0]) {
3653 if (is_broadcast_ether_addr(data.src_mac) ||
3654 is_zero_ether_addr(data.src_mac)) {
3655 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3656 vf->vf_id, data.src_mac);
3657 goto err;
3658 }
3659 }
3660
3661 if (mask.dst_port & data.dst_port) {
3662 if (!data.dst_port) {
3663 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3664 vf->vf_id);
3665 goto err;
3666 }
3667 }
3668
3669 if (mask.src_port & data.src_port) {
3670 if (!data.src_port) {
3671 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3672 vf->vf_id);
3673 goto err;
3674 }
3675 }
3676
3677 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3678 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3679 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3680 vf->vf_id);
3681 goto err;
3682 }
3683
3684 if (mask.vlan_id & data.vlan_id) {
3685 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3686 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3687 vf->vf_id);
3688 goto err;
3689 }
3690 }
3691
3692 return 0;
3693 err:
3694 return -EIO;
3695 }
3696
3697 /**
3698 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3699 * @vf: pointer to the VF info
3700 * @seid: seid of the vsi it is searching for
3701 **/
3702 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3703 {
3704 struct i40e_pf *pf = vf->pf;
3705 struct i40e_vsi *vsi = NULL;
3706 int i;
3707
3708 for (i = 0; i < vf->num_tc ; i++) {
3709 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3710 if (vsi && vsi->seid == seid)
3711 return vsi;
3712 }
3713 return NULL;
3714 }
3715
3716 /**
3717 * i40e_del_all_cloud_filters
3718 * @vf: pointer to the VF info
3719 *
3720 * This function deletes all cloud filters
3721 **/
3722 static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3723 {
3724 struct i40e_cloud_filter *cfilter = NULL;
3725 struct i40e_pf *pf = vf->pf;
3726 struct i40e_vsi *vsi = NULL;
3727 struct hlist_node *node;
3728 int ret;
3729
3730 hlist_for_each_entry_safe(cfilter, node,
3731 &vf->cloud_filter_list, cloud_node) {
3732 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3733
3734 if (!vsi) {
3735 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3736 vf->vf_id, cfilter->seid);
3737 continue;
3738 }
3739
3740 if (cfilter->dst_port)
3741 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3742 false);
3743 else
3744 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3745 if (ret)
3746 dev_err(&pf->pdev->dev,
3747 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3748 vf->vf_id, ERR_PTR(ret),
3749 i40e_aq_str(&pf->hw,
3750 pf->hw.aq.asq_last_status));
3751
3752 hlist_del(&cfilter->cloud_node);
3753 kfree(cfilter);
3754 vf->num_cloud_filters--;
3755 }
3756 }
3757
3758 /**
3759 * i40e_vc_del_cloud_filter
3760 * @vf: pointer to the VF info
3761 * @msg: pointer to the msg buffer
3762 *
3763 * This function deletes a cloud filter programmed as TC filter for ADq
3764 **/
3765 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3766 {
3767 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3768 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3769 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3770 struct i40e_cloud_filter cfilter, *cf = NULL;
3771 struct i40e_pf *pf = vf->pf;
3772 struct i40e_vsi *vsi = NULL;
3773 struct hlist_node *node;
3774 int aq_ret = 0;
3775 int i, ret;
3776
3777 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3778 aq_ret = -EINVAL;
3779 goto err;
3780 }
3781
3782 if (!vf->adq_enabled) {
3783 dev_info(&pf->pdev->dev,
3784 "VF %d: ADq not enabled, can't apply cloud filter\n",
3785 vf->vf_id);
3786 aq_ret = -EINVAL;
3787 goto err;
3788 }
3789
3790 if (i40e_validate_cloud_filter(vf, vcf)) {
3791 dev_info(&pf->pdev->dev,
3792 "VF %d: Invalid input, can't apply cloud filter\n",
3793 vf->vf_id);
3794 aq_ret = -EINVAL;
3795 goto err;
3796 }
3797
3798 memset(&cfilter, 0, sizeof(cfilter));
3799 /* parse destination mac address */
3800 for (i = 0; i < ETH_ALEN; i++)
3801 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3802
3803 /* parse source mac address */
3804 for (i = 0; i < ETH_ALEN; i++)
3805 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3806
3807 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3808 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3809 cfilter.src_port = mask.src_port & tcf.src_port;
3810
3811 switch (vcf->flow_type) {
3812 case VIRTCHNL_TCP_V4_FLOW:
3813 cfilter.n_proto = ETH_P_IP;
3814 if (mask.dst_ip[0] & tcf.dst_ip[0])
3815 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3816 ARRAY_SIZE(tcf.dst_ip));
3817 else if (mask.src_ip[0] & tcf.dst_ip[0])
3818 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3819 ARRAY_SIZE(tcf.dst_ip));
3820 break;
3821 case VIRTCHNL_TCP_V6_FLOW:
3822 cfilter.n_proto = ETH_P_IPV6;
3823 if (mask.dst_ip[3] & tcf.dst_ip[3])
3824 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3825 sizeof(cfilter.ip.v6.dst_ip6));
3826 if (mask.src_ip[3] & tcf.src_ip[3])
3827 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3828 sizeof(cfilter.ip.v6.src_ip6));
3829 break;
3830 default:
3831 /* TC filter can be configured based on different combinations
3832 * and in this case IP is not a part of filter config
3833 */
3834 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3835 vf->vf_id);
3836 }
3837
3838 /* get the vsi to which the tc belongs to */
3839 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3840 cfilter.seid = vsi->seid;
3841 cfilter.flags = vcf->field_flags;
3842
3843 /* Deleting TC filter */
3844 if (tcf.dst_port)
3845 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3846 else
3847 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3848 if (ret) {
3849 dev_err(&pf->pdev->dev,
3850 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3851 vf->vf_id, ERR_PTR(ret),
3852 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3853 goto err;
3854 }
3855
3856 hlist_for_each_entry_safe(cf, node,
3857 &vf->cloud_filter_list, cloud_node) {
3858 if (cf->seid != cfilter.seid)
3859 continue;
3860 if (mask.dst_port)
3861 if (cfilter.dst_port != cf->dst_port)
3862 continue;
3863 if (mask.dst_mac[0])
3864 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3865 continue;
3866 /* for ipv4 data to be valid, only first byte of mask is set */
3867 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3868 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3869 ARRAY_SIZE(tcf.dst_ip)))
3870 continue;
3871 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3872 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3873 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3874 sizeof(cfilter.ip.v6.src_ip6)))
3875 continue;
3876 if (mask.vlan_id)
3877 if (cfilter.vlan_id != cf->vlan_id)
3878 continue;
3879
3880 hlist_del(&cf->cloud_node);
3881 kfree(cf);
3882 vf->num_cloud_filters--;
3883 }
3884
3885 err:
3886 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3887 aq_ret);
3888 }
3889
3890 /**
3891 * i40e_vc_add_cloud_filter
3892 * @vf: pointer to the VF info
3893 * @msg: pointer to the msg buffer
3894 *
3895 * This function adds a cloud filter programmed as TC filter for ADq
3896 **/
3897 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3898 {
3899 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3900 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3901 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3902 struct i40e_cloud_filter *cfilter = NULL;
3903 struct i40e_pf *pf = vf->pf;
3904 struct i40e_vsi *vsi = NULL;
3905 int aq_ret = 0;
3906 int i;
3907
3908 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3909 aq_ret = -EINVAL;
3910 goto err_out;
3911 }
3912
3913 if (!vf->adq_enabled) {
3914 dev_info(&pf->pdev->dev,
3915 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3916 vf->vf_id);
3917 aq_ret = -EINVAL;
3918 goto err_out;
3919 }
3920
3921 if (i40e_validate_cloud_filter(vf, vcf)) {
3922 dev_info(&pf->pdev->dev,
3923 "VF %d: Invalid input/s, can't apply cloud filter\n",
3924 vf->vf_id);
3925 aq_ret = -EINVAL;
3926 goto err_out;
3927 }
3928
3929 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3930 if (!cfilter) {
3931 aq_ret = -ENOMEM;
3932 goto err_out;
3933 }
3934
3935 /* parse destination mac address */
3936 for (i = 0; i < ETH_ALEN; i++)
3937 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3938
3939 /* parse source mac address */
3940 for (i = 0; i < ETH_ALEN; i++)
3941 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3942
3943 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3944 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3945 cfilter->src_port = mask.src_port & tcf.src_port;
3946
3947 switch (vcf->flow_type) {
3948 case VIRTCHNL_TCP_V4_FLOW:
3949 cfilter->n_proto = ETH_P_IP;
3950 if (mask.dst_ip[0] & tcf.dst_ip[0])
3951 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3952 ARRAY_SIZE(tcf.dst_ip));
3953 else if (mask.src_ip[0] & tcf.dst_ip[0])
3954 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3955 ARRAY_SIZE(tcf.dst_ip));
3956 break;
3957 case VIRTCHNL_TCP_V6_FLOW:
3958 cfilter->n_proto = ETH_P_IPV6;
3959 if (mask.dst_ip[3] & tcf.dst_ip[3])
3960 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3961 sizeof(cfilter->ip.v6.dst_ip6));
3962 if (mask.src_ip[3] & tcf.src_ip[3])
3963 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3964 sizeof(cfilter->ip.v6.src_ip6));
3965 break;
3966 default:
3967 /* TC filter can be configured based on different combinations
3968 * and in this case IP is not a part of filter config
3969 */
3970 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3971 vf->vf_id);
3972 }
3973
3974 /* get the VSI to which the TC belongs to */
3975 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3976 cfilter->seid = vsi->seid;
3977 cfilter->flags = vcf->field_flags;
3978
3979 /* Adding cloud filter programmed as TC filter */
3980 if (tcf.dst_port)
3981 aq_ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3982 else
3983 aq_ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3984 if (aq_ret) {
3985 dev_err(&pf->pdev->dev,
3986 "VF %d: Failed to add cloud filter, err %pe aq_err %s\n",
3987 vf->vf_id, ERR_PTR(aq_ret),
3988 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3989 goto err_free;
3990 }
3991
3992 INIT_HLIST_NODE(&cfilter->cloud_node);
3993 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3994 /* release the pointer passing it to the collection */
3995 cfilter = NULL;
3996 vf->num_cloud_filters++;
3997 err_free:
3998 kfree(cfilter);
3999 err_out:
4000 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
4001 aq_ret);
4002 }
4003
4004 /**
4005 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
4006 * @vf: pointer to the VF info
4007 * @msg: pointer to the msg buffer
4008 **/
4009 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
4010 {
4011 struct virtchnl_tc_info *tci =
4012 (struct virtchnl_tc_info *)msg;
4013 struct i40e_pf *pf = vf->pf;
4014 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4015 int i, adq_request_qps = 0;
4016 int aq_ret = 0;
4017 u64 speed = 0;
4018
4019 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4020 aq_ret = -EINVAL;
4021 goto err;
4022 }
4023
4024 /* ADq cannot be applied if spoof check is ON */
4025 if (vf->spoofchk) {
4026 dev_err(&pf->pdev->dev,
4027 "Spoof check is ON, turn it OFF to enable ADq\n");
4028 aq_ret = -EINVAL;
4029 goto err;
4030 }
4031
4032 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
4033 dev_err(&pf->pdev->dev,
4034 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
4035 vf->vf_id);
4036 aq_ret = -EINVAL;
4037 goto err;
4038 }
4039
4040 /* max number of traffic classes for VF currently capped at 4 */
4041 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
4042 dev_err(&pf->pdev->dev,
4043 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
4044 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
4045 aq_ret = -EINVAL;
4046 goto err;
4047 }
4048
4049 /* validate queues for each TC */
4050 for (i = 0; i < tci->num_tc; i++)
4051 if (!tci->list[i].count ||
4052 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
4053 dev_err(&pf->pdev->dev,
4054 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
4055 vf->vf_id, i, tci->list[i].count,
4056 I40E_DEFAULT_QUEUES_PER_VF);
4057 aq_ret = -EINVAL;
4058 goto err;
4059 }
4060
4061 /* need Max VF queues but already have default number of queues */
4062 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
4063
4064 if (pf->queues_left < adq_request_qps) {
4065 dev_err(&pf->pdev->dev,
4066 "No queues left to allocate to VF %d\n",
4067 vf->vf_id);
4068 aq_ret = -EINVAL;
4069 goto err;
4070 } else {
4071 /* we need to allocate max VF queues to enable ADq so as to
4072 * make sure ADq enabled VF always gets back queues when it
4073 * goes through a reset.
4074 */
4075 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
4076 }
4077
4078 /* get link speed in MB to validate rate limit */
4079 speed = i40e_vc_link_speed2mbps(ls->link_speed);
4080 if (speed == SPEED_UNKNOWN) {
4081 dev_err(&pf->pdev->dev,
4082 "Cannot detect link speed\n");
4083 aq_ret = -EINVAL;
4084 goto err;
4085 }
4086
4087 /* parse data from the queue channel info */
4088 vf->num_tc = tci->num_tc;
4089 for (i = 0; i < vf->num_tc; i++) {
4090 if (tci->list[i].max_tx_rate) {
4091 if (tci->list[i].max_tx_rate > speed) {
4092 dev_err(&pf->pdev->dev,
4093 "Invalid max tx rate %llu specified for VF %d.",
4094 tci->list[i].max_tx_rate,
4095 vf->vf_id);
4096 aq_ret = -EINVAL;
4097 goto err;
4098 } else {
4099 vf->ch[i].max_tx_rate =
4100 tci->list[i].max_tx_rate;
4101 }
4102 }
4103 vf->ch[i].num_qps = tci->list[i].count;
4104 }
4105
4106 /* set this flag only after making sure all inputs are sane */
4107 vf->adq_enabled = true;
4108
4109 /* reset the VF in order to allocate resources */
4110 i40e_vc_reset_vf(vf, true);
4111
4112 return 0;
4113
4114 /* send the response to the VF */
4115 err:
4116 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
4117 aq_ret);
4118 }
4119
4120 /**
4121 * i40e_vc_del_qch_msg
4122 * @vf: pointer to the VF info
4123 * @msg: pointer to the msg buffer
4124 **/
4125 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
4126 {
4127 struct i40e_pf *pf = vf->pf;
4128 int aq_ret = 0;
4129
4130 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4131 aq_ret = -EINVAL;
4132 goto err;
4133 }
4134
4135 if (vf->adq_enabled) {
4136 i40e_del_all_cloud_filters(vf);
4137 i40e_del_qch(vf);
4138 vf->adq_enabled = false;
4139 vf->num_tc = 0;
4140 dev_info(&pf->pdev->dev,
4141 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
4142 vf->vf_id);
4143 } else {
4144 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
4145 vf->vf_id);
4146 aq_ret = -EINVAL;
4147 }
4148
4149 /* reset the VF in order to allocate resources */
4150 i40e_vc_reset_vf(vf, true);
4151
4152 return 0;
4153
4154 err:
4155 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
4156 aq_ret);
4157 }
4158
4159 /**
4160 * i40e_vc_process_vf_msg
4161 * @pf: pointer to the PF structure
4162 * @vf_id: source VF id
4163 * @v_opcode: operation code
4164 * @v_retval: unused return value code
4165 * @msg: pointer to the msg buffer
4166 * @msglen: msg length
4167 *
4168 * called from the common aeq/arq handler to
4169 * process request from VF
4170 **/
4171 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4172 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4173 {
4174 struct i40e_hw *hw = &pf->hw;
4175 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4176 struct i40e_vf *vf;
4177 int ret;
4178
4179 pf->vf_aq_requests++;
4180 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4181 return -EINVAL;
4182 vf = &(pf->vf[local_vf_id]);
4183
4184 /* Check if VF is disabled. */
4185 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4186 return -EINVAL;
4187
4188 /* perform basic checks on the msg */
4189 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4190
4191 if (ret) {
4192 i40e_vc_send_resp_to_vf(vf, v_opcode, -EINVAL);
4193 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4194 local_vf_id, v_opcode, msglen);
4195 return ret;
4196 }
4197
4198 switch (v_opcode) {
4199 case VIRTCHNL_OP_VERSION:
4200 ret = i40e_vc_get_version_msg(vf, msg);
4201 break;
4202 case VIRTCHNL_OP_GET_VF_RESOURCES:
4203 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4204 i40e_vc_notify_vf_link_state(vf);
4205 break;
4206 case VIRTCHNL_OP_RESET_VF:
4207 i40e_vc_reset_vf(vf, false);
4208 ret = 0;
4209 break;
4210 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4211 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4212 break;
4213 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4214 ret = i40e_vc_config_queues_msg(vf, msg);
4215 break;
4216 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4217 ret = i40e_vc_config_irq_map_msg(vf, msg);
4218 break;
4219 case VIRTCHNL_OP_ENABLE_QUEUES:
4220 ret = i40e_vc_enable_queues_msg(vf, msg);
4221 i40e_vc_notify_vf_link_state(vf);
4222 break;
4223 case VIRTCHNL_OP_DISABLE_QUEUES:
4224 ret = i40e_vc_disable_queues_msg(vf, msg);
4225 break;
4226 case VIRTCHNL_OP_ADD_ETH_ADDR:
4227 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4228 break;
4229 case VIRTCHNL_OP_DEL_ETH_ADDR:
4230 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4231 break;
4232 case VIRTCHNL_OP_ADD_VLAN:
4233 ret = i40e_vc_add_vlan_msg(vf, msg);
4234 break;
4235 case VIRTCHNL_OP_DEL_VLAN:
4236 ret = i40e_vc_remove_vlan_msg(vf, msg);
4237 break;
4238 case VIRTCHNL_OP_GET_STATS:
4239 ret = i40e_vc_get_stats_msg(vf, msg);
4240 break;
4241 case VIRTCHNL_OP_RDMA:
4242 ret = i40e_vc_rdma_msg(vf, msg, msglen);
4243 break;
4244 case VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP:
4245 ret = i40e_vc_rdma_qvmap_msg(vf, msg, true);
4246 break;
4247 case VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP:
4248 ret = i40e_vc_rdma_qvmap_msg(vf, msg, false);
4249 break;
4250 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4251 ret = i40e_vc_config_rss_key(vf, msg);
4252 break;
4253 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4254 ret = i40e_vc_config_rss_lut(vf, msg);
4255 break;
4256 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4257 ret = i40e_vc_get_rss_hena(vf, msg);
4258 break;
4259 case VIRTCHNL_OP_SET_RSS_HENA:
4260 ret = i40e_vc_set_rss_hena(vf, msg);
4261 break;
4262 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4263 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4264 break;
4265 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4266 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4267 break;
4268 case VIRTCHNL_OP_REQUEST_QUEUES:
4269 ret = i40e_vc_request_queues_msg(vf, msg);
4270 break;
4271 case VIRTCHNL_OP_ENABLE_CHANNELS:
4272 ret = i40e_vc_add_qch_msg(vf, msg);
4273 break;
4274 case VIRTCHNL_OP_DISABLE_CHANNELS:
4275 ret = i40e_vc_del_qch_msg(vf, msg);
4276 break;
4277 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4278 ret = i40e_vc_add_cloud_filter(vf, msg);
4279 break;
4280 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4281 ret = i40e_vc_del_cloud_filter(vf, msg);
4282 break;
4283 case VIRTCHNL_OP_UNKNOWN:
4284 default:
4285 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4286 v_opcode, local_vf_id);
4287 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4288 -EOPNOTSUPP);
4289 break;
4290 }
4291
4292 return ret;
4293 }
4294
4295 /**
4296 * i40e_vc_process_vflr_event
4297 * @pf: pointer to the PF structure
4298 *
4299 * called from the vlfr irq handler to
4300 * free up VF resources and state variables
4301 **/
4302 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4303 {
4304 struct i40e_hw *hw = &pf->hw;
4305 u32 reg, reg_idx, bit_idx;
4306 struct i40e_vf *vf;
4307 int vf_id;
4308
4309 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4310 return 0;
4311
4312 /* Re-enable the VFLR interrupt cause here, before looking for which
4313 * VF got reset. Otherwise, if another VF gets a reset while the
4314 * first one is being processed, that interrupt will be lost, and
4315 * that VF will be stuck in reset forever.
4316 */
4317 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4318 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4319 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4320 i40e_flush(hw);
4321
4322 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4323 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4324 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4325 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4326 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4327 vf = &pf->vf[vf_id];
4328 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4329 if (reg & BIT(bit_idx))
4330 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4331 i40e_reset_vf(vf, true);
4332 }
4333
4334 return 0;
4335 }
4336
4337 /**
4338 * i40e_validate_vf
4339 * @pf: the physical function
4340 * @vf_id: VF identifier
4341 *
4342 * Check that the VF is enabled and the VSI exists.
4343 *
4344 * Returns 0 on success, negative on failure
4345 **/
4346 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4347 {
4348 struct i40e_vsi *vsi;
4349 struct i40e_vf *vf;
4350 int ret = 0;
4351
4352 if (vf_id >= pf->num_alloc_vfs) {
4353 dev_err(&pf->pdev->dev,
4354 "Invalid VF Identifier %d\n", vf_id);
4355 ret = -EINVAL;
4356 goto err_out;
4357 }
4358 vf = &pf->vf[vf_id];
4359 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4360 if (!vsi)
4361 ret = -EINVAL;
4362 err_out:
4363 return ret;
4364 }
4365
4366 /**
4367 * i40e_check_vf_init_timeout
4368 * @vf: the virtual function
4369 *
4370 * Check that the VF's initialization was successfully done and if not
4371 * wait up to 300ms for its finish.
4372 *
4373 * Returns true when VF is initialized, false on timeout
4374 **/
4375 static bool i40e_check_vf_init_timeout(struct i40e_vf *vf)
4376 {
4377 int i;
4378
4379 /* When the VF is resetting wait until it is done.
4380 * It can take up to 200 milliseconds, but wait for
4381 * up to 300 milliseconds to be safe.
4382 */
4383 for (i = 0; i < 15; i++) {
4384 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4385 return true;
4386 msleep(20);
4387 }
4388
4389 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4390 dev_err(&vf->pf->pdev->dev,
4391 "VF %d still in reset. Try again.\n", vf->vf_id);
4392 return false;
4393 }
4394
4395 return true;
4396 }
4397
4398 /**
4399 * i40e_ndo_set_vf_mac
4400 * @netdev: network interface device structure
4401 * @vf_id: VF identifier
4402 * @mac: mac address
4403 *
4404 * program VF mac address
4405 **/
4406 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4407 {
4408 struct i40e_netdev_priv *np = netdev_priv(netdev);
4409 struct i40e_vsi *vsi = np->vsi;
4410 struct i40e_pf *pf = vsi->back;
4411 struct i40e_mac_filter *f;
4412 struct i40e_vf *vf;
4413 int ret = 0;
4414 struct hlist_node *h;
4415 int bkt;
4416
4417 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4418 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4419 return -EAGAIN;
4420 }
4421
4422 /* validate the request */
4423 ret = i40e_validate_vf(pf, vf_id);
4424 if (ret)
4425 goto error_param;
4426
4427 vf = &pf->vf[vf_id];
4428 if (!i40e_check_vf_init_timeout(vf)) {
4429 ret = -EAGAIN;
4430 goto error_param;
4431 }
4432 vsi = pf->vsi[vf->lan_vsi_idx];
4433
4434 if (is_multicast_ether_addr(mac)) {
4435 dev_err(&pf->pdev->dev,
4436 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4437 ret = -EINVAL;
4438 goto error_param;
4439 }
4440
4441 /* Lock once because below invoked function add/del_filter requires
4442 * mac_filter_hash_lock to be held
4443 */
4444 spin_lock_bh(&vsi->mac_filter_hash_lock);
4445
4446 /* delete the temporary mac address */
4447 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4448 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4449
4450 /* Delete all the filters for this VSI - we're going to kill it
4451 * anyway.
4452 */
4453 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4454 __i40e_del_filter(vsi, f);
4455
4456 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4457
4458 /* program mac filter */
4459 if (i40e_sync_vsi_filters(vsi)) {
4460 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4461 ret = -EIO;
4462 goto error_param;
4463 }
4464 ether_addr_copy(vf->default_lan_addr.addr, mac);
4465
4466 if (is_zero_ether_addr(mac)) {
4467 vf->pf_set_mac = false;
4468 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4469 } else {
4470 vf->pf_set_mac = true;
4471 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4472 mac, vf_id);
4473 }
4474
4475 /* Force the VF interface down so it has to bring up with new MAC
4476 * address
4477 */
4478 i40e_vc_reset_vf(vf, true);
4479 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4480
4481 error_param:
4482 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4483 return ret;
4484 }
4485
4486 /**
4487 * i40e_ndo_set_vf_port_vlan
4488 * @netdev: network interface device structure
4489 * @vf_id: VF identifier
4490 * @vlan_id: mac address
4491 * @qos: priority setting
4492 * @vlan_proto: vlan protocol
4493 *
4494 * program VF vlan id and/or qos
4495 **/
4496 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4497 u16 vlan_id, u8 qos, __be16 vlan_proto)
4498 {
4499 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4500 struct i40e_netdev_priv *np = netdev_priv(netdev);
4501 bool allmulti = false, alluni = false;
4502 struct i40e_pf *pf = np->vsi->back;
4503 struct i40e_vsi *vsi;
4504 struct i40e_vf *vf;
4505 int ret = 0;
4506
4507 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4508 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4509 return -EAGAIN;
4510 }
4511
4512 /* validate the request */
4513 ret = i40e_validate_vf(pf, vf_id);
4514 if (ret)
4515 goto error_pvid;
4516
4517 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4518 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4519 ret = -EINVAL;
4520 goto error_pvid;
4521 }
4522
4523 if (vlan_proto != htons(ETH_P_8021Q)) {
4524 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4525 ret = -EPROTONOSUPPORT;
4526 goto error_pvid;
4527 }
4528
4529 vf = &pf->vf[vf_id];
4530 if (!i40e_check_vf_init_timeout(vf)) {
4531 ret = -EAGAIN;
4532 goto error_pvid;
4533 }
4534 vsi = pf->vsi[vf->lan_vsi_idx];
4535
4536 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4537 /* duplicate request, so just return success */
4538 goto error_pvid;
4539
4540 i40e_vlan_stripping_enable(vsi);
4541
4542 /* Locked once because multiple functions below iterate list */
4543 spin_lock_bh(&vsi->mac_filter_hash_lock);
4544
4545 /* Check for condition where there was already a port VLAN ID
4546 * filter set and now it is being deleted by setting it to zero.
4547 * Additionally check for the condition where there was a port
4548 * VLAN but now there is a new and different port VLAN being set.
4549 * Before deleting all the old VLAN filters we must add new ones
4550 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4551 * MAC addresses deleted.
4552 */
4553 if ((!(vlan_id || qos) ||
4554 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4555 vsi->info.pvid) {
4556 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4557 if (ret) {
4558 dev_info(&vsi->back->pdev->dev,
4559 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4560 vsi->back->hw.aq.asq_last_status);
4561 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4562 goto error_pvid;
4563 }
4564 }
4565
4566 if (vsi->info.pvid) {
4567 /* remove all filters on the old VLAN */
4568 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4569 VLAN_VID_MASK));
4570 }
4571
4572 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4573
4574 /* disable promisc modes in case they were enabled */
4575 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4576 allmulti, alluni);
4577 if (ret) {
4578 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4579 goto error_pvid;
4580 }
4581
4582 if (vlan_id || qos)
4583 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4584 else
4585 i40e_vsi_remove_pvid(vsi);
4586 spin_lock_bh(&vsi->mac_filter_hash_lock);
4587
4588 if (vlan_id) {
4589 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4590 vlan_id, qos, vf_id);
4591
4592 /* add new VLAN filter for each MAC */
4593 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4594 if (ret) {
4595 dev_info(&vsi->back->pdev->dev,
4596 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4597 vsi->back->hw.aq.asq_last_status);
4598 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4599 goto error_pvid;
4600 }
4601
4602 /* remove the previously added non-VLAN MAC filters */
4603 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4604 }
4605
4606 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4607
4608 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4609 alluni = true;
4610
4611 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4612 allmulti = true;
4613
4614 /* Schedule the worker thread to take care of applying changes */
4615 i40e_service_event_schedule(vsi->back);
4616
4617 if (ret) {
4618 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4619 goto error_pvid;
4620 }
4621
4622 /* The Port VLAN needs to be saved across resets the same as the
4623 * default LAN MAC address.
4624 */
4625 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4626
4627 i40e_vc_reset_vf(vf, true);
4628 /* During reset the VF got a new VSI, so refresh a pointer. */
4629 vsi = pf->vsi[vf->lan_vsi_idx];
4630
4631 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4632 if (ret) {
4633 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4634 goto error_pvid;
4635 }
4636
4637 ret = 0;
4638
4639 error_pvid:
4640 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4641 return ret;
4642 }
4643
4644 /**
4645 * i40e_ndo_set_vf_bw
4646 * @netdev: network interface device structure
4647 * @vf_id: VF identifier
4648 * @min_tx_rate: Minimum Tx rate
4649 * @max_tx_rate: Maximum Tx rate
4650 *
4651 * configure VF Tx rate
4652 **/
4653 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4654 int max_tx_rate)
4655 {
4656 struct i40e_netdev_priv *np = netdev_priv(netdev);
4657 struct i40e_pf *pf = np->vsi->back;
4658 struct i40e_vsi *vsi;
4659 struct i40e_vf *vf;
4660 int ret = 0;
4661
4662 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4663 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4664 return -EAGAIN;
4665 }
4666
4667 /* validate the request */
4668 ret = i40e_validate_vf(pf, vf_id);
4669 if (ret)
4670 goto error;
4671
4672 if (min_tx_rate) {
4673 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4674 min_tx_rate, vf_id);
4675 ret = -EINVAL;
4676 goto error;
4677 }
4678
4679 vf = &pf->vf[vf_id];
4680 if (!i40e_check_vf_init_timeout(vf)) {
4681 ret = -EAGAIN;
4682 goto error;
4683 }
4684 vsi = pf->vsi[vf->lan_vsi_idx];
4685
4686 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4687 if (ret)
4688 goto error;
4689
4690 vf->tx_rate = max_tx_rate;
4691 error:
4692 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4693 return ret;
4694 }
4695
4696 /**
4697 * i40e_ndo_get_vf_config
4698 * @netdev: network interface device structure
4699 * @vf_id: VF identifier
4700 * @ivi: VF configuration structure
4701 *
4702 * return VF configuration
4703 **/
4704 int i40e_ndo_get_vf_config(struct net_device *netdev,
4705 int vf_id, struct ifla_vf_info *ivi)
4706 {
4707 struct i40e_netdev_priv *np = netdev_priv(netdev);
4708 struct i40e_vsi *vsi = np->vsi;
4709 struct i40e_pf *pf = vsi->back;
4710 struct i40e_vf *vf;
4711 int ret = 0;
4712
4713 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4714 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4715 return -EAGAIN;
4716 }
4717
4718 /* validate the request */
4719 ret = i40e_validate_vf(pf, vf_id);
4720 if (ret)
4721 goto error_param;
4722
4723 vf = &pf->vf[vf_id];
4724 /* first vsi is always the LAN vsi */
4725 vsi = pf->vsi[vf->lan_vsi_idx];
4726 if (!vsi) {
4727 ret = -ENOENT;
4728 goto error_param;
4729 }
4730
4731 ivi->vf = vf_id;
4732
4733 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4734
4735 ivi->max_tx_rate = vf->tx_rate;
4736 ivi->min_tx_rate = 0;
4737 ivi->vlan = le16_get_bits(vsi->info.pvid, I40E_VLAN_MASK);
4738 ivi->qos = le16_get_bits(vsi->info.pvid, I40E_PRIORITY_MASK);
4739 if (vf->link_forced == false)
4740 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4741 else if (vf->link_up == true)
4742 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4743 else
4744 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4745 ivi->spoofchk = vf->spoofchk;
4746 ivi->trusted = vf->trusted;
4747 ret = 0;
4748
4749 error_param:
4750 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4751 return ret;
4752 }
4753
4754 /**
4755 * i40e_ndo_set_vf_link_state
4756 * @netdev: network interface device structure
4757 * @vf_id: VF identifier
4758 * @link: required link state
4759 *
4760 * Set the link state of a specified VF, regardless of physical link state
4761 **/
4762 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4763 {
4764 struct i40e_netdev_priv *np = netdev_priv(netdev);
4765 struct i40e_pf *pf = np->vsi->back;
4766 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4767 struct virtchnl_pf_event pfe;
4768 struct i40e_hw *hw = &pf->hw;
4769 struct i40e_vsi *vsi;
4770 unsigned long q_map;
4771 struct i40e_vf *vf;
4772 int abs_vf_id;
4773 int ret = 0;
4774 int tmp;
4775
4776 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4777 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4778 return -EAGAIN;
4779 }
4780
4781 /* validate the request */
4782 if (vf_id >= pf->num_alloc_vfs) {
4783 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4784 ret = -EINVAL;
4785 goto error_out;
4786 }
4787
4788 vf = &pf->vf[vf_id];
4789 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4790
4791 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4792 pfe.severity = PF_EVENT_SEVERITY_INFO;
4793
4794 switch (link) {
4795 case IFLA_VF_LINK_STATE_AUTO:
4796 vf->link_forced = false;
4797 vf->is_disabled_from_host = false;
4798 /* reset needed to reinit VF resources */
4799 i40e_vc_reset_vf(vf, true);
4800 i40e_set_vf_link_state(vf, &pfe, ls);
4801 break;
4802 case IFLA_VF_LINK_STATE_ENABLE:
4803 vf->link_forced = true;
4804 vf->link_up = true;
4805 vf->is_disabled_from_host = false;
4806 /* reset needed to reinit VF resources */
4807 i40e_vc_reset_vf(vf, true);
4808 i40e_set_vf_link_state(vf, &pfe, ls);
4809 break;
4810 case IFLA_VF_LINK_STATE_DISABLE:
4811 vf->link_forced = true;
4812 vf->link_up = false;
4813 i40e_set_vf_link_state(vf, &pfe, ls);
4814
4815 vsi = pf->vsi[vf->lan_vsi_idx];
4816 q_map = BIT(vsi->num_queue_pairs) - 1;
4817
4818 vf->is_disabled_from_host = true;
4819
4820 /* Try to stop both Tx&Rx rings even if one of the calls fails
4821 * to ensure we stop the rings even in case of errors.
4822 * If any of them returns with an error then the first
4823 * error that occurred will be returned.
4824 */
4825 tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false);
4826 ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false);
4827
4828 ret = tmp ? tmp : ret;
4829 break;
4830 default:
4831 ret = -EINVAL;
4832 goto error_out;
4833 }
4834 /* Notify the VF of its new link state */
4835 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4836 0, (u8 *)&pfe, sizeof(pfe), NULL);
4837
4838 error_out:
4839 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4840 return ret;
4841 }
4842
4843 /**
4844 * i40e_ndo_set_vf_spoofchk
4845 * @netdev: network interface device structure
4846 * @vf_id: VF identifier
4847 * @enable: flag to enable or disable feature
4848 *
4849 * Enable or disable VF spoof checking
4850 **/
4851 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4852 {
4853 struct i40e_netdev_priv *np = netdev_priv(netdev);
4854 struct i40e_vsi *vsi = np->vsi;
4855 struct i40e_pf *pf = vsi->back;
4856 struct i40e_vsi_context ctxt;
4857 struct i40e_hw *hw = &pf->hw;
4858 struct i40e_vf *vf;
4859 int ret = 0;
4860
4861 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4862 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4863 return -EAGAIN;
4864 }
4865
4866 /* validate the request */
4867 if (vf_id >= pf->num_alloc_vfs) {
4868 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4869 ret = -EINVAL;
4870 goto out;
4871 }
4872
4873 vf = &(pf->vf[vf_id]);
4874 if (!i40e_check_vf_init_timeout(vf)) {
4875 ret = -EAGAIN;
4876 goto out;
4877 }
4878
4879 if (enable == vf->spoofchk)
4880 goto out;
4881
4882 vf->spoofchk = enable;
4883 memset(&ctxt, 0, sizeof(ctxt));
4884 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4885 ctxt.pf_num = pf->hw.pf_id;
4886 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4887 if (enable)
4888 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4889 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4890 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4891 if (ret) {
4892 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4893 ret);
4894 ret = -EIO;
4895 }
4896 out:
4897 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4898 return ret;
4899 }
4900
4901 /**
4902 * i40e_ndo_set_vf_trust
4903 * @netdev: network interface device structure of the pf
4904 * @vf_id: VF identifier
4905 * @setting: trust setting
4906 *
4907 * Enable or disable VF trust setting
4908 **/
4909 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4910 {
4911 struct i40e_netdev_priv *np = netdev_priv(netdev);
4912 struct i40e_pf *pf = np->vsi->back;
4913 struct i40e_vf *vf;
4914 int ret = 0;
4915
4916 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4917 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4918 return -EAGAIN;
4919 }
4920
4921 /* validate the request */
4922 if (vf_id >= pf->num_alloc_vfs) {
4923 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4924 ret = -EINVAL;
4925 goto out;
4926 }
4927
4928 if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
4929 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4930 ret = -EINVAL;
4931 goto out;
4932 }
4933
4934 vf = &pf->vf[vf_id];
4935
4936 if (setting == vf->trusted)
4937 goto out;
4938
4939 vf->trusted = setting;
4940
4941 /* request PF to sync mac/vlan filters for the VF */
4942 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
4943 pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
4944
4945 i40e_vc_reset_vf(vf, true);
4946 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4947 vf_id, setting ? "" : "un");
4948
4949 if (vf->adq_enabled) {
4950 if (!vf->trusted) {
4951 dev_info(&pf->pdev->dev,
4952 "VF %u no longer Trusted, deleting all cloud filters\n",
4953 vf_id);
4954 i40e_del_all_cloud_filters(vf);
4955 }
4956 }
4957
4958 out:
4959 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4960 return ret;
4961 }
4962
4963 /**
4964 * i40e_get_vf_stats - populate some stats for the VF
4965 * @netdev: the netdev of the PF
4966 * @vf_id: the host OS identifier (0-127)
4967 * @vf_stats: pointer to the OS memory to be initialized
4968 */
4969 int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4970 struct ifla_vf_stats *vf_stats)
4971 {
4972 struct i40e_netdev_priv *np = netdev_priv(netdev);
4973 struct i40e_pf *pf = np->vsi->back;
4974 struct i40e_eth_stats *stats;
4975 struct i40e_vsi *vsi;
4976 struct i40e_vf *vf;
4977
4978 /* validate the request */
4979 if (i40e_validate_vf(pf, vf_id))
4980 return -EINVAL;
4981
4982 vf = &pf->vf[vf_id];
4983 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4984 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4985 return -EBUSY;
4986 }
4987
4988 vsi = pf->vsi[vf->lan_vsi_idx];
4989 if (!vsi)
4990 return -EINVAL;
4991
4992 i40e_update_eth_stats(vsi);
4993 stats = &vsi->eth_stats;
4994
4995 memset(vf_stats, 0, sizeof(*vf_stats));
4996
4997 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4998 stats->rx_multicast;
4999 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
5000 stats->tx_multicast;
5001 vf_stats->rx_bytes = stats->rx_bytes;
5002 vf_stats->tx_bytes = stats->tx_bytes;
5003 vf_stats->broadcast = stats->rx_broadcast;
5004 vf_stats->multicast = stats->rx_multicast;
5005 vf_stats->rx_dropped = stats->rx_discards + stats->rx_discards_other;
5006 vf_stats->tx_dropped = stats->tx_discards;
5007
5008 return 0;
5009 }
Kernel DRM miscellaneous fixes and cross-tree changes