1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4#include "i40e.h"
5#include "i40e_lan_hmc.h"
6#include "i40e_virtchnl_pf.h"
7
8/*********************notification routines***********************/
9
10/**
11 * i40e_vc_vf_broadcast
12 * @pf: pointer to the PF structure
13 * @v_opcode: operation code
14 * @v_retval: return value
15 * @msg: pointer to the msg buffer
16 * @msglen: msg length
17 *
18 * send a message to all VFs on a given PF
19 **/
20static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
21 enum virtchnl_ops v_opcode,
22 int v_retval, u8 *msg,
23 u16 msglen)
24{
25 struct i40e_hw *hw = &pf->hw;
26 struct i40e_vf *vf = pf->vf;
27 int i;
28
29 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
30 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
31 /* Not all vfs are enabled so skip the ones that are not */
32 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
33 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
34 continue;
35
36 /* Ignore return value on purpose - a given VF may fail, but
37 * we need to keep going and send to all of them
38 */
39 i40e_aq_send_msg_to_vf(hw, vfid: abs_vf_id, v_opcode, v_retval,
40 msg, msglen, NULL);
41 }
42}
43
44/**
45 * i40e_vc_link_speed2mbps
46 * converts i40e_aq_link_speed to integer value of Mbps
47 * @link_speed: the speed to convert
48 *
49 * return the speed as direct value of Mbps.
50 **/
51static u32
52i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)
53{
54 switch (link_speed) {
55 case I40E_LINK_SPEED_100MB:
56 return SPEED_100;
57 case I40E_LINK_SPEED_1GB:
58 return SPEED_1000;
59 case I40E_LINK_SPEED_2_5GB:
60 return SPEED_2500;
61 case I40E_LINK_SPEED_5GB:
62 return SPEED_5000;
63 case I40E_LINK_SPEED_10GB:
64 return SPEED_10000;
65 case I40E_LINK_SPEED_20GB:
66 return SPEED_20000;
67 case I40E_LINK_SPEED_25GB:
68 return SPEED_25000;
69 case I40E_LINK_SPEED_40GB:
70 return SPEED_40000;
71 case I40E_LINK_SPEED_UNKNOWN:
72 return SPEED_UNKNOWN;
73 }
74 return SPEED_UNKNOWN;
75}
76
77/**
78 * i40e_set_vf_link_state
79 * @vf: pointer to the VF structure
80 * @pfe: pointer to PF event structure
81 * @ls: pointer to link status structure
82 *
83 * set a link state on a single vf
84 **/
85static void i40e_set_vf_link_state(struct i40e_vf *vf,
86 struct virtchnl_pf_event *pfe, struct i40e_link_status *ls)
87{
88 u8 link_status = ls->link_info & I40E_AQ_LINK_UP;
89
90 if (vf->link_forced)
91 link_status = vf->link_up;
92
93 if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
94 pfe->event_data.link_event_adv.link_speed = link_status ?
95 i40e_vc_link_speed2mbps(link_speed: 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(link_speed: ls->link_speed) : 0;
100 pfe->event_data.link_event.link_status = link_status;
101 }
102}
103
104/**
105 * i40e_vc_notify_vf_link_state
106 * @vf: pointer to the VF structure
107 *
108 * send a link status message to a single VF
109 **/
110static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
111{
112 struct virtchnl_pf_event pfe;
113 struct i40e_pf *pf = vf->pf;
114 struct i40e_hw *hw = &pf->hw;
115 struct i40e_link_status *ls = &pf->hw.phy.link_info;
116 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
117
118 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
119 pfe.severity = PF_EVENT_SEVERITY_INFO;
120
121 i40e_set_vf_link_state(vf, pfe: &pfe, ls);
122
123 i40e_aq_send_msg_to_vf(hw, vfid: abs_vf_id, v_opcode: VIRTCHNL_OP_EVENT,
124 v_retval: 0, msg: (u8 *)&pfe, msglen: sizeof(pfe), NULL);
125}
126
127/**
128 * i40e_vc_notify_link_state
129 * @pf: pointer to the PF structure
130 *
131 * send a link status message to all VFs on a given PF
132 **/
133void i40e_vc_notify_link_state(struct i40e_pf *pf)
134{
135 int i;
136
137 for (i = 0; i < pf->num_alloc_vfs; i++)
138 i40e_vc_notify_vf_link_state(vf: &pf->vf[i]);
139}
140
141/**
142 * i40e_vc_notify_reset
143 * @pf: pointer to the PF structure
144 *
145 * indicate a pending reset to all VFs on a given PF
146 **/
147void i40e_vc_notify_reset(struct i40e_pf *pf)
148{
149 struct virtchnl_pf_event pfe;
150
151 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
152 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
153 i40e_vc_vf_broadcast(pf, v_opcode: VIRTCHNL_OP_EVENT, v_retval: 0,
154 msg: (u8 *)&pfe, msglen: sizeof(struct virtchnl_pf_event));
155}
156
157/**
158 * i40e_vc_notify_vf_reset
159 * @vf: pointer to the VF structure
160 *
161 * indicate a pending reset to the given VF
162 **/
163void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
164{
165 struct virtchnl_pf_event pfe;
166 int abs_vf_id;
167
168 /* validate the request */
169 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
170 return;
171
172 /* verify if the VF is in either init or active before proceeding */
173 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
174 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
175 return;
176
177 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
178
179 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
180 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
181 i40e_aq_send_msg_to_vf(hw: &vf->pf->hw, vfid: abs_vf_id, v_opcode: VIRTCHNL_OP_EVENT,
182 v_retval: 0, msg: (u8 *)&pfe,
183 msglen: sizeof(struct virtchnl_pf_event), NULL);
184}
185/***********************misc routines*****************************/
186
187/**
188 * i40e_vc_reset_vf
189 * @vf: pointer to the VF info
190 * @notify_vf: notify vf about reset or not
191 * Reset VF handler.
192 **/
193static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
194{
195 struct i40e_pf *pf = vf->pf;
196 int i;
197
198 if (notify_vf)
199 i40e_vc_notify_vf_reset(vf);
200
201 /* We want to ensure that an actual reset occurs initiated after this
202 * function was called. However, we do not want to wait forever, so
203 * we'll give a reasonable time and print a message if we failed to
204 * ensure a reset.
205 */
206 for (i = 0; i < 20; i++) {
207 /* If PF is in VFs releasing state reset VF is impossible,
208 * so leave it.
209 */
210 if (test_bit(__I40E_VFS_RELEASING, pf->state))
211 return;
212 if (i40e_reset_vf(vf, flr: false))
213 return;
214 usleep_range(min: 10000, max: 20000);
215 }
216
217 if (notify_vf)
218 dev_warn(&vf->pf->pdev->dev,
219 "Failed to initiate reset for VF %d after 200 milliseconds\n",
220 vf->vf_id);
221 else
222 dev_dbg(&vf->pf->pdev->dev,
223 "Failed to initiate reset for VF %d after 200 milliseconds\n",
224 vf->vf_id);
225}
226
227/**
228 * i40e_vc_isvalid_vsi_id
229 * @vf: pointer to the VF info
230 * @vsi_id: VF relative VSI id
231 *
232 * check for the valid VSI id
233 **/
234static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
235{
236 struct i40e_pf *pf = vf->pf;
237 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, id: vsi_id);
238
239 return (vsi && (vsi->vf_id == vf->vf_id));
240}
241
242/**
243 * i40e_vc_isvalid_queue_id
244 * @vf: pointer to the VF info
245 * @vsi_id: vsi id
246 * @qid: vsi relative queue id
247 *
248 * check for the valid queue id
249 **/
250static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
251 u16 qid)
252{
253 struct i40e_pf *pf = vf->pf;
254 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, id: vsi_id);
255
256 return (vsi && (qid < vsi->alloc_queue_pairs));
257}
258
259/**
260 * i40e_vc_isvalid_vector_id
261 * @vf: pointer to the VF info
262 * @vector_id: VF relative vector id
263 *
264 * check for the valid vector id
265 **/
266static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
267{
268 struct i40e_pf *pf = vf->pf;
269
270 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
271}
272
273/***********************vf resource mgmt routines*****************/
274
275/**
276 * i40e_vc_get_pf_queue_id
277 * @vf: pointer to the VF info
278 * @vsi_id: id of VSI as provided by the FW
279 * @vsi_queue_id: vsi relative queue id
280 *
281 * return PF relative queue id
282 **/
283static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
284 u8 vsi_queue_id)
285{
286 struct i40e_pf *pf = vf->pf;
287 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, id: vsi_id);
288 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
289
290 if (!vsi)
291 return pf_queue_id;
292
293 if (le16_to_cpu(vsi->info.mapping_flags) &
294 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
295 pf_queue_id =
296 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
297 else
298 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
299 vsi_queue_id;
300
301 return pf_queue_id;
302}
303
304/**
305 * i40e_get_real_pf_qid
306 * @vf: pointer to the VF info
307 * @vsi_id: vsi id
308 * @queue_id: queue number
309 *
310 * wrapper function to get pf_queue_id handling ADq code as well
311 **/
312static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
313{
314 int i;
315
316 if (vf->adq_enabled) {
317 /* Although VF considers all the queues(can be 1 to 16) as its
318 * own but they may actually belong to different VSIs(up to 4).
319 * We need to find which queues belongs to which VSI.
320 */
321 for (i = 0; i < vf->num_tc; i++) {
322 if (queue_id < vf->ch[i].num_qps) {
323 vsi_id = vf->ch[i].vsi_id;
324 break;
325 }
326 /* find right queue id which is relative to a
327 * given VSI.
328 */
329 queue_id -= vf->ch[i].num_qps;
330 }
331 }
332
333 return i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id: queue_id);
334}
335
336/**
337 * i40e_config_irq_link_list
338 * @vf: pointer to the VF info
339 * @vsi_id: id of VSI as given by the FW
340 * @vecmap: irq map info
341 *
342 * configure irq link list from the map
343 **/
344static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
345 struct virtchnl_vector_map *vecmap)
346{
347 unsigned long linklistmap = 0, tempmap;
348 struct i40e_pf *pf = vf->pf;
349 struct i40e_hw *hw = &pf->hw;
350 u16 vsi_queue_id, pf_queue_id;
351 enum i40e_queue_type qtype;
352 u16 next_q, vector_id, size;
353 u32 reg, reg_idx;
354 u16 itr_idx = 0;
355
356 vector_id = vecmap->vector_id;
357 /* setup the head */
358 if (0 == vector_id)
359 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
360 else
361 reg_idx = I40E_VPINT_LNKLSTN(
362 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
363 (vector_id - 1));
364
365 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
366 /* Special case - No queues mapped on this vector */
367 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
368 goto irq_list_done;
369 }
370 tempmap = vecmap->rxq_map;
371 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
372 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
373 vsi_queue_id));
374 }
375
376 tempmap = vecmap->txq_map;
377 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
378 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
379 vsi_queue_id + 1));
380 }
381
382 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
383 next_q = find_first_bit(addr: &linklistmap, size);
384 if (unlikely(next_q == size))
385 goto irq_list_done;
386
387 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
388 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
389 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, queue_id: vsi_queue_id);
390 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
391
392 wr32(hw, reg_idx, reg);
393
394 while (next_q < size) {
395 switch (qtype) {
396 case I40E_QUEUE_TYPE_RX:
397 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
398 itr_idx = vecmap->rxitr_idx;
399 break;
400 case I40E_QUEUE_TYPE_TX:
401 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
402 itr_idx = vecmap->txitr_idx;
403 break;
404 default:
405 break;
406 }
407
408 next_q = find_next_bit(addr: &linklistmap, size, offset: next_q + 1);
409 if (next_q < size) {
410 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
411 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
412 pf_queue_id = i40e_get_real_pf_qid(vf,
413 vsi_id,
414 queue_id: vsi_queue_id);
415 } else {
416 pf_queue_id = I40E_QUEUE_END_OF_LIST;
417 qtype = 0;
418 }
419
420 /* format for the RQCTL & TQCTL regs is same */
421 reg = (vector_id) |
422 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
423 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
424 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
425 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
426 wr32(hw, reg_idx, reg);
427 }
428
429 /* if the vf is running in polling mode and using interrupt zero,
430 * need to disable auto-mask on enabling zero interrupt for VFs.
431 */
432 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
433 (vector_id == 0)) {
434 reg = rd32(hw, I40E_GLINT_CTL);
435 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
436 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
437 wr32(hw, I40E_GLINT_CTL, reg);
438 }
439 }
440
441irq_list_done:
442 i40e_flush(hw);
443}
444
445/**
446 * i40e_release_rdma_qvlist
447 * @vf: pointer to the VF.
448 *
449 **/
450static void i40e_release_rdma_qvlist(struct i40e_vf *vf)
451{
452 struct i40e_pf *pf = vf->pf;
453 struct virtchnl_rdma_qvlist_info *qvlist_info = vf->qvlist_info;
454 u32 msix_vf;
455 u32 i;
456
457 if (!vf->qvlist_info)
458 return;
459
460 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
461 for (i = 0; i < qvlist_info->num_vectors; i++) {
462 struct virtchnl_rdma_qv_info *qv_info;
463 u32 next_q_index, next_q_type;
464 struct i40e_hw *hw = &pf->hw;
465 u32 v_idx, reg_idx, reg;
466
467 qv_info = &qvlist_info->qv_info[i];
468 if (!qv_info)
469 continue;
470 v_idx = qv_info->v_idx;
471 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
472 /* Figure out the queue after CEQ and make that the
473 * first queue.
474 */
475 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
476 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
477 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
478 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
479 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
480 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
481
482 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
483 reg = (next_q_index &
484 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
485 (next_q_type <<
486 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
487
488 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
489 }
490 }
491 kfree(objp: vf->qvlist_info);
492 vf->qvlist_info = NULL;
493}
494
495/**
496 * i40e_config_rdma_qvlist
497 * @vf: pointer to the VF info
498 * @qvlist_info: queue and vector list
499 *
500 * Return 0 on success or < 0 on error
501 **/
502static int
503i40e_config_rdma_qvlist(struct i40e_vf *vf,
504 struct virtchnl_rdma_qvlist_info *qvlist_info)
505{
506 struct i40e_pf *pf = vf->pf;
507 struct i40e_hw *hw = &pf->hw;
508 struct virtchnl_rdma_qv_info *qv_info;
509 u32 v_idx, i, reg_idx, reg;
510 u32 next_q_idx, next_q_type;
511 size_t size;
512 u32 msix_vf;
513 int ret = 0;
514
515 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
516
517 if (qvlist_info->num_vectors > msix_vf) {
518 dev_warn(&pf->pdev->dev,
519 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
520 qvlist_info->num_vectors,
521 msix_vf);
522 ret = -EINVAL;
523 goto err_out;
524 }
525
526 kfree(objp: vf->qvlist_info);
527 size = virtchnl_struct_size(vf->qvlist_info, qv_info,
528 qvlist_info->num_vectors);
529 vf->qvlist_info = kzalloc(size, GFP_KERNEL);
530 if (!vf->qvlist_info) {
531 ret = -ENOMEM;
532 goto err_out;
533 }
534 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
535
536 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
537 for (i = 0; i < qvlist_info->num_vectors; i++) {
538 qv_info = &qvlist_info->qv_info[i];
539 if (!qv_info)
540 continue;
541
542 /* Validate vector id belongs to this vf */
543 if (!i40e_vc_isvalid_vector_id(vf, vector_id: qv_info->v_idx)) {
544 ret = -EINVAL;
545 goto err_free;
546 }
547
548 v_idx = qv_info->v_idx;
549
550 vf->qvlist_info->qv_info[i] = *qv_info;
551
552 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
553 /* We might be sharing the interrupt, so get the first queue
554 * index and type, push it down the list by adding the new
555 * queue on top. Also link it with the new queue in CEQCTL.
556 */
557 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
558 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
559 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
560 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
561 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
562
563 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
564 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
565 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
566 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
567 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
568 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
569 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
570 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
571
572 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
573 reg = (qv_info->ceq_idx &
574 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
575 (I40E_QUEUE_TYPE_PE_CEQ <<
576 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
577 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
578 }
579
580 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
581 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
582 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
583 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
584
585 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
586 }
587 }
588
589 return 0;
590err_free:
591 kfree(objp: vf->qvlist_info);
592 vf->qvlist_info = NULL;
593err_out:
594 return ret;
595}
596
597/**
598 * i40e_config_vsi_tx_queue
599 * @vf: pointer to the VF info
600 * @vsi_id: id of VSI as provided by the FW
601 * @vsi_queue_id: vsi relative queue index
602 * @info: config. info
603 *
604 * configure tx queue
605 **/
606static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
607 u16 vsi_queue_id,
608 struct virtchnl_txq_info *info)
609{
610 struct i40e_pf *pf = vf->pf;
611 struct i40e_hw *hw = &pf->hw;
612 struct i40e_hmc_obj_txq tx_ctx;
613 struct i40e_vsi *vsi;
614 u16 pf_queue_id;
615 u32 qtx_ctl;
616 int ret = 0;
617
618 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id: info->vsi_id)) {
619 ret = -ENOENT;
620 goto error_context;
621 }
622 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
623 vsi = i40e_find_vsi_from_id(pf, id: vsi_id);
624 if (!vsi) {
625 ret = -ENOENT;
626 goto error_context;
627 }
628
629 /* clear the context structure first */
630 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
631
632 /* only set the required fields */
633 tx_ctx.base = info->dma_ring_addr / 128;
634 tx_ctx.qlen = info->ring_len;
635 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
636 tx_ctx.rdylist_act = 0;
637 tx_ctx.head_wb_ena = info->headwb_enabled;
638 tx_ctx.head_wb_addr = info->dma_headwb_addr;
639
640 /* clear the context in the HMC */
641 ret = i40e_clear_lan_tx_queue_context(hw, queue: pf_queue_id);
642 if (ret) {
643 dev_err(&pf->pdev->dev,
644 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
645 pf_queue_id, ret);
646 ret = -ENOENT;
647 goto error_context;
648 }
649
650 /* set the context in the HMC */
651 ret = i40e_set_lan_tx_queue_context(hw, queue: pf_queue_id, s: &tx_ctx);
652 if (ret) {
653 dev_err(&pf->pdev->dev,
654 "Failed to set VF LAN Tx queue context %d error: %d\n",
655 pf_queue_id, ret);
656 ret = -ENOENT;
657 goto error_context;
658 }
659
660 /* associate this queue with the PCI VF function */
661 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
662 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
663 & I40E_QTX_CTL_PF_INDX_MASK);
664 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
665 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
666 & I40E_QTX_CTL_VFVM_INDX_MASK);
667 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
668 i40e_flush(hw);
669
670error_context:
671 return ret;
672}
673
674/**
675 * i40e_config_vsi_rx_queue
676 * @vf: pointer to the VF info
677 * @vsi_id: id of VSI as provided by the FW
678 * @vsi_queue_id: vsi relative queue index
679 * @info: config. info
680 *
681 * configure rx queue
682 **/
683static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
684 u16 vsi_queue_id,
685 struct virtchnl_rxq_info *info)
686{
687 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
688 struct i40e_pf *pf = vf->pf;
689 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
690 struct i40e_hw *hw = &pf->hw;
691 struct i40e_hmc_obj_rxq rx_ctx;
692 int ret = 0;
693
694 /* clear the context structure first */
695 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
696
697 /* only set the required fields */
698 rx_ctx.base = info->dma_ring_addr / 128;
699 rx_ctx.qlen = info->ring_len;
700
701 if (info->splithdr_enabled) {
702 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
703 I40E_RX_SPLIT_IP |
704 I40E_RX_SPLIT_TCP_UDP |
705 I40E_RX_SPLIT_SCTP;
706 /* header length validation */
707 if (info->hdr_size > ((2 * 1024) - 64)) {
708 ret = -EINVAL;
709 goto error_param;
710 }
711 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
712
713 /* set split mode 10b */
714 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
715 }
716
717 /* databuffer length validation */
718 if (info->databuffer_size > ((16 * 1024) - 128)) {
719 ret = -EINVAL;
720 goto error_param;
721 }
722 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
723
724 /* max pkt. length validation */
725 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
726 ret = -EINVAL;
727 goto error_param;
728 }
729 rx_ctx.rxmax = info->max_pkt_size;
730
731 /* if port VLAN is configured increase the max packet size */
732 if (vsi->info.pvid)
733 rx_ctx.rxmax += VLAN_HLEN;
734
735 /* enable 32bytes desc always */
736 rx_ctx.dsize = 1;
737
738 /* default values */
739 rx_ctx.lrxqthresh = 1;
740 rx_ctx.crcstrip = 1;
741 rx_ctx.prefena = 1;
742 rx_ctx.l2tsel = 1;
743
744 /* clear the context in the HMC */
745 ret = i40e_clear_lan_rx_queue_context(hw, queue: pf_queue_id);
746 if (ret) {
747 dev_err(&pf->pdev->dev,
748 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
749 pf_queue_id, ret);
750 ret = -ENOENT;
751 goto error_param;
752 }
753
754 /* set the context in the HMC */
755 ret = i40e_set_lan_rx_queue_context(hw, queue: pf_queue_id, s: &rx_ctx);
756 if (ret) {
757 dev_err(&pf->pdev->dev,
758 "Failed to set VF LAN Rx queue context %d error: %d\n",
759 pf_queue_id, ret);
760 ret = -ENOENT;
761 goto error_param;
762 }
763
764error_param:
765 return ret;
766}
767
768/**
769 * i40e_alloc_vsi_res
770 * @vf: pointer to the VF info
771 * @idx: VSI index, applies only for ADq mode, zero otherwise
772 *
773 * alloc VF vsi context & resources
774 **/
775static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
776{
777 struct i40e_mac_filter *f = NULL;
778 struct i40e_pf *pf = vf->pf;
779 struct i40e_vsi *vsi;
780 u64 max_tx_rate = 0;
781 int ret = 0;
782
783 vsi = i40e_vsi_setup(pf, type: I40E_VSI_SRIOV, uplink: pf->vsi[pf->lan_vsi]->seid,
784 param1: vf->vf_id);
785
786 if (!vsi) {
787 dev_err(&pf->pdev->dev,
788 "add vsi failed for VF %d, aq_err %d\n",
789 vf->vf_id, pf->hw.aq.asq_last_status);
790 ret = -ENOENT;
791 goto error_alloc_vsi_res;
792 }
793
794 if (!idx) {
795 u64 hena = i40e_pf_get_default_rss_hena(pf);
796 u8 broadcast[ETH_ALEN];
797
798 vf->lan_vsi_idx = vsi->idx;
799 vf->lan_vsi_id = vsi->id;
800 /* If the port VLAN has been configured and then the
801 * VF driver was removed then the VSI port VLAN
802 * configuration was destroyed. Check if there is
803 * a port VLAN and restore the VSI configuration if
804 * needed.
805 */
806 if (vf->port_vlan_id)
807 i40e_vsi_add_pvid(vsi, vid: vf->port_vlan_id);
808
809 spin_lock_bh(lock: &vsi->mac_filter_hash_lock);
810 if (is_valid_ether_addr(addr: vf->default_lan_addr.addr)) {
811 f = i40e_add_mac_filter(vsi,
812 macaddr: vf->default_lan_addr.addr);
813 if (!f)
814 dev_info(&pf->pdev->dev,
815 "Could not add MAC filter %pM for VF %d\n",
816 vf->default_lan_addr.addr, vf->vf_id);
817 }
818 eth_broadcast_addr(addr: broadcast);
819 f = i40e_add_mac_filter(vsi, macaddr: broadcast);
820 if (!f)
821 dev_info(&pf->pdev->dev,
822 "Could not allocate VF broadcast filter\n");
823 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
824 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
825 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
826 /* program mac filter only for VF VSI */
827 ret = i40e_sync_vsi_filters(vsi);
828 if (ret)
829 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
830 }
831
832 /* storing VSI index and id for ADq and don't apply the mac filter */
833 if (vf->adq_enabled) {
834 vf->ch[idx].vsi_idx = vsi->idx;
835 vf->ch[idx].vsi_id = vsi->id;
836 }
837
838 /* Set VF bandwidth if specified */
839 if (vf->tx_rate) {
840 max_tx_rate = vf->tx_rate;
841 } else if (vf->ch[idx].max_tx_rate) {
842 max_tx_rate = vf->ch[idx].max_tx_rate;
843 }
844
845 if (max_tx_rate) {
846 max_tx_rate = div_u64(dividend: max_tx_rate, I40E_BW_CREDIT_DIVISOR);
847 ret = i40e_aq_config_vsi_bw_limit(hw: &pf->hw, seid: vsi->seid,
848 credit: max_tx_rate, max_credit: 0, NULL);
849 if (ret)
850 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
851 vf->vf_id, ret);
852 }
853
854error_alloc_vsi_res:
855 return ret;
856}
857
858/**
859 * i40e_map_pf_queues_to_vsi
860 * @vf: pointer to the VF info
861 *
862 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
863 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
864 **/
865static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
866{
867 struct i40e_pf *pf = vf->pf;
868 struct i40e_hw *hw = &pf->hw;
869 u32 reg, num_tc = 1; /* VF has at least one traffic class */
870 u16 vsi_id, qps;
871 int i, j;
872
873 if (vf->adq_enabled)
874 num_tc = vf->num_tc;
875
876 for (i = 0; i < num_tc; i++) {
877 if (vf->adq_enabled) {
878 qps = vf->ch[i].num_qps;
879 vsi_id = vf->ch[i].vsi_id;
880 } else {
881 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
882 vsi_id = vf->lan_vsi_id;
883 }
884
885 for (j = 0; j < 7; j++) {
886 if (j * 2 >= qps) {
887 /* end of list */
888 reg = 0x07FF07FF;
889 } else {
890 u16 qid = i40e_vc_get_pf_queue_id(vf,
891 vsi_id,
892 vsi_queue_id: j * 2);
893 reg = qid;
894 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
895 vsi_queue_id: (j * 2) + 1);
896 reg |= qid << 16;
897 }
898 i40e_write_rx_ctl(hw,
899 I40E_VSILAN_QTABLE(j, vsi_id),
900 reg_val: reg);
901 }
902 }
903}
904
905/**
906 * i40e_map_pf_to_vf_queues
907 * @vf: pointer to the VF info
908 *
909 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
910 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
911 **/
912static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
913{
914 struct i40e_pf *pf = vf->pf;
915 struct i40e_hw *hw = &pf->hw;
916 u32 reg, total_qps = 0;
917 u32 qps, num_tc = 1; /* VF has at least one traffic class */
918 u16 vsi_id, qid;
919 int i, j;
920
921 if (vf->adq_enabled)
922 num_tc = vf->num_tc;
923
924 for (i = 0; i < num_tc; i++) {
925 if (vf->adq_enabled) {
926 qps = vf->ch[i].num_qps;
927 vsi_id = vf->ch[i].vsi_id;
928 } else {
929 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
930 vsi_id = vf->lan_vsi_id;
931 }
932
933 for (j = 0; j < qps; j++) {
934 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id: j);
935
936 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
937 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
938 reg);
939 total_qps++;
940 }
941 }
942}
943
944/**
945 * i40e_enable_vf_mappings
946 * @vf: pointer to the VF info
947 *
948 * enable VF mappings
949 **/
950static void i40e_enable_vf_mappings(struct i40e_vf *vf)
951{
952 struct i40e_pf *pf = vf->pf;
953 struct i40e_hw *hw = &pf->hw;
954 u32 reg;
955
956 /* Tell the hardware we're using noncontiguous mapping. HW requires
957 * that VF queues be mapped using this method, even when they are
958 * contiguous in real life
959 */
960 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
961 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
962
963 /* enable VF vplan_qtable mappings */
964 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
965 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
966
967 i40e_map_pf_to_vf_queues(vf);
968 i40e_map_pf_queues_to_vsi(vf);
969
970 i40e_flush(hw);
971}
972
973/**
974 * i40e_disable_vf_mappings
975 * @vf: pointer to the VF info
976 *
977 * disable VF mappings
978 **/
979static void i40e_disable_vf_mappings(struct i40e_vf *vf)
980{
981 struct i40e_pf *pf = vf->pf;
982 struct i40e_hw *hw = &pf->hw;
983 int i;
984
985 /* disable qp mappings */
986 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
987 for (i = 0; i < I40E_MAX_VSI_QP; i++)
988 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
989 I40E_QUEUE_END_OF_LIST);
990 i40e_flush(hw);
991}
992
993/**
994 * i40e_free_vf_res
995 * @vf: pointer to the VF info
996 *
997 * free VF resources
998 **/
999static void i40e_free_vf_res(struct i40e_vf *vf)
1000{
1001 struct i40e_pf *pf = vf->pf;
1002 struct i40e_hw *hw = &pf->hw;
1003 u32 reg_idx, reg;
1004 int i, j, msix_vf;
1005
1006 /* Start by disabling VF's configuration API to prevent the OS from
1007 * accessing the VF's VSI after it's freed / invalidated.
1008 */
1009 clear_bit(nr: I40E_VF_STATE_INIT, addr: &vf->vf_states);
1010
1011 /* It's possible the VF had requeuested more queues than the default so
1012 * do the accounting here when we're about to free them.
1013 */
1014 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
1015 pf->queues_left += vf->num_queue_pairs -
1016 I40E_DEFAULT_QUEUES_PER_VF;
1017 }
1018
1019 /* free vsi & disconnect it from the parent uplink */
1020 if (vf->lan_vsi_idx) {
1021 i40e_vsi_release(vsi: pf->vsi[vf->lan_vsi_idx]);
1022 vf->lan_vsi_idx = 0;
1023 vf->lan_vsi_id = 0;
1024 }
1025
1026 /* do the accounting and remove additional ADq VSI's */
1027 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
1028 for (j = 0; j < vf->num_tc; j++) {
1029 /* At this point VSI0 is already released so don't
1030 * release it again and only clear their values in
1031 * structure variables
1032 */
1033 if (j)
1034 i40e_vsi_release(vsi: pf->vsi[vf->ch[j].vsi_idx]);
1035 vf->ch[j].vsi_idx = 0;
1036 vf->ch[j].vsi_id = 0;
1037 }
1038 }
1039 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
1040
1041 /* disable interrupts so the VF starts in a known state */
1042 for (i = 0; i < msix_vf; i++) {
1043 /* format is same for both registers */
1044 if (0 == i)
1045 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
1046 else
1047 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
1048 (vf->vf_id))
1049 + (i - 1));
1050 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
1051 i40e_flush(hw);
1052 }
1053
1054 /* clear the irq settings */
1055 for (i = 0; i < msix_vf; i++) {
1056 /* format is same for both registers */
1057 if (0 == i)
1058 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
1059 else
1060 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
1061 (vf->vf_id))
1062 + (i - 1));
1063 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1064 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1065 wr32(hw, reg_idx, reg);
1066 i40e_flush(hw);
1067 }
1068 /* reset some of the state variables keeping track of the resources */
1069 vf->num_queue_pairs = 0;
1070 clear_bit(nr: I40E_VF_STATE_MC_PROMISC, addr: &vf->vf_states);
1071 clear_bit(nr: I40E_VF_STATE_UC_PROMISC, addr: &vf->vf_states);
1072}
1073
1074/**
1075 * i40e_alloc_vf_res
1076 * @vf: pointer to the VF info
1077 *
1078 * allocate VF resources
1079 **/
1080static int i40e_alloc_vf_res(struct i40e_vf *vf)
1081{
1082 struct i40e_pf *pf = vf->pf;
1083 int total_queue_pairs = 0;
1084 int ret, idx;
1085
1086 if (vf->num_req_queues &&
1087 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1088 pf->num_vf_qps = vf->num_req_queues;
1089 else
1090 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1091
1092 /* allocate hw vsi context & associated resources */
1093 ret = i40e_alloc_vsi_res(vf, idx: 0);
1094 if (ret)
1095 goto error_alloc;
1096 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1097
1098 /* allocate additional VSIs based on tc information for ADq */
1099 if (vf->adq_enabled) {
1100 if (pf->queues_left >=
1101 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1102 /* TC 0 always belongs to VF VSI */
1103 for (idx = 1; idx < vf->num_tc; idx++) {
1104 ret = i40e_alloc_vsi_res(vf, idx);
1105 if (ret)
1106 goto error_alloc;
1107 }
1108 /* send correct number of queues */
1109 total_queue_pairs = I40E_MAX_VF_QUEUES;
1110 } else {
1111 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1112 vf->vf_id);
1113 vf->adq_enabled = false;
1114 }
1115 }
1116
1117 /* We account for each VF to get a default number of queue pairs. If
1118 * the VF has now requested more, we need to account for that to make
1119 * certain we never request more queues than we actually have left in
1120 * HW.
1121 */
1122 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1123 pf->queues_left -=
1124 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1125
1126 if (vf->trusted)
1127 set_bit(nr: I40E_VIRTCHNL_VF_CAP_PRIVILEGE, addr: &vf->vf_caps);
1128 else
1129 clear_bit(nr: I40E_VIRTCHNL_VF_CAP_PRIVILEGE, addr: &vf->vf_caps);
1130
1131 /* store the total qps number for the runtime
1132 * VF req validation
1133 */
1134 vf->num_queue_pairs = total_queue_pairs;
1135
1136 /* VF is now completely initialized */
1137 set_bit(nr: I40E_VF_STATE_INIT, addr: &vf->vf_states);
1138
1139error_alloc:
1140 if (ret)
1141 i40e_free_vf_res(vf);
1142
1143 return ret;
1144}
1145
1146#define VF_DEVICE_STATUS 0xAA
1147#define VF_TRANS_PENDING_MASK 0x20
1148/**
1149 * i40e_quiesce_vf_pci
1150 * @vf: pointer to the VF structure
1151 *
1152 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1153 * if the transactions never clear.
1154 **/
1155static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1156{
1157 struct i40e_pf *pf = vf->pf;
1158 struct i40e_hw *hw = &pf->hw;
1159 int vf_abs_id, i;
1160 u32 reg;
1161
1162 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1163
1164 wr32(hw, I40E_PF_PCI_CIAA,
1165 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1166 for (i = 0; i < 100; i++) {
1167 reg = rd32(hw, I40E_PF_PCI_CIAD);
1168 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1169 return 0;
1170 udelay(1);
1171 }
1172 return -EIO;
1173}
1174
1175/**
1176 * __i40e_getnum_vf_vsi_vlan_filters
1177 * @vsi: pointer to the vsi
1178 *
1179 * called to get the number of VLANs offloaded on this VF
1180 **/
1181static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1182{
1183 struct i40e_mac_filter *f;
1184 u16 num_vlans = 0, bkt;
1185
1186 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1187 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1188 num_vlans++;
1189 }
1190
1191 return num_vlans;
1192}
1193
1194/**
1195 * i40e_getnum_vf_vsi_vlan_filters
1196 * @vsi: pointer to the vsi
1197 *
1198 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
1199 **/
1200static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1201{
1202 int num_vlans;
1203
1204 spin_lock_bh(lock: &vsi->mac_filter_hash_lock);
1205 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1206 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
1207
1208 return num_vlans;
1209}
1210
1211/**
1212 * i40e_get_vlan_list_sync
1213 * @vsi: pointer to the VSI
1214 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller
1215 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
1216 * This array is allocated here, but has to be freed in caller.
1217 *
1218 * Called to get number of VLANs and VLAN list present in mac_filter_hash.
1219 **/
1220static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
1221 s16 **vlan_list)
1222{
1223 struct i40e_mac_filter *f;
1224 int i = 0;
1225 int bkt;
1226
1227 spin_lock_bh(lock: &vsi->mac_filter_hash_lock);
1228 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1229 *vlan_list = kcalloc(n: *num_vlans, size: sizeof(**vlan_list), GFP_ATOMIC);
1230 if (!(*vlan_list))
1231 goto err;
1232
1233 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1234 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1235 continue;
1236 (*vlan_list)[i++] = f->vlan;
1237 }
1238err:
1239 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
1240}
1241
1242/**
1243 * i40e_set_vsi_promisc
1244 * @vf: pointer to the VF struct
1245 * @seid: VSI number
1246 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
1247 * for a given VLAN
1248 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
1249 * for a given VLAN
1250 * @vl: List of VLANs - apply filter for given VLANs
1251 * @num_vlans: Number of elements in @vl
1252 **/
1253static int
1254i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
1255 bool unicast_enable, s16 *vl, u16 num_vlans)
1256{
1257 struct i40e_pf *pf = vf->pf;
1258 struct i40e_hw *hw = &pf->hw;
1259 int aq_ret, aq_tmp = 0;
1260 int i;
1261
1262 /* No VLAN to set promisc on, set on VSI */
1263 if (!num_vlans || !vl) {
1264 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi_id: seid,
1265 set: multi_enable,
1266 NULL);
1267 if (aq_ret) {
1268 int aq_err = pf->hw.aq.asq_last_status;
1269
1270 dev_err(&pf->pdev->dev,
1271 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1272 vf->vf_id,
1273 ERR_PTR(aq_ret),
1274 i40e_aq_str(&pf->hw, aq_err));
1275
1276 return aq_ret;
1277 }
1278
1279 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, vsi_id: seid,
1280 set: unicast_enable,
1281 NULL, rx_only_promisc: true);
1282
1283 if (aq_ret) {
1284 int aq_err = pf->hw.aq.asq_last_status;
1285
1286 dev_err(&pf->pdev->dev,
1287 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1288 vf->vf_id,
1289 ERR_PTR(aq_ret),
1290 i40e_aq_str(&pf->hw, aq_err));
1291 }
1292
1293 return aq_ret;
1294 }
1295
1296 for (i = 0; i < num_vlans; i++) {
1297 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
1298 enable: multi_enable,
1299 vid: vl[i], NULL);
1300 if (aq_ret) {
1301 int aq_err = pf->hw.aq.asq_last_status;
1302
1303 dev_err(&pf->pdev->dev,
1304 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1305 vf->vf_id,
1306 ERR_PTR(aq_ret),
1307 i40e_aq_str(&pf->hw, aq_err));
1308
1309 if (!aq_tmp)
1310 aq_tmp = aq_ret;
1311 }
1312
1313 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
1314 enable: unicast_enable,
1315 vid: vl[i], NULL);
1316 if (aq_ret) {
1317 int aq_err = pf->hw.aq.asq_last_status;
1318
1319 dev_err(&pf->pdev->dev,
1320 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1321 vf->vf_id,
1322 ERR_PTR(aq_ret),
1323 i40e_aq_str(&pf->hw, aq_err));
1324
1325 if (!aq_tmp)
1326 aq_tmp = aq_ret;
1327 }
1328 }
1329
1330 if (aq_tmp)
1331 aq_ret = aq_tmp;
1332
1333 return aq_ret;
1334}
1335
1336/**
1337 * i40e_config_vf_promiscuous_mode
1338 * @vf: pointer to the VF info
1339 * @vsi_id: VSI id
1340 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1341 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1342 *
1343 * Called from the VF to configure the promiscuous mode of
1344 * VF vsis and from the VF reset path to reset promiscuous mode.
1345 **/
1346static int i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1347 u16 vsi_id,
1348 bool allmulti,
1349 bool alluni)
1350{
1351 struct i40e_pf *pf = vf->pf;
1352 struct i40e_vsi *vsi;
1353 int aq_ret = 0;
1354 u16 num_vlans;
1355 s16 *vl;
1356
1357 vsi = i40e_find_vsi_from_id(pf, id: vsi_id);
1358 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1359 return -EINVAL;
1360
1361 if (vf->port_vlan_id) {
1362 aq_ret = i40e_set_vsi_promisc(vf, seid: vsi->seid, multi_enable: allmulti,
1363 unicast_enable: alluni, vl: &vf->port_vlan_id, num_vlans: 1);
1364 return aq_ret;
1365 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1366 i40e_get_vlan_list_sync(vsi, num_vlans: &num_vlans, vlan_list: &vl);
1367
1368 if (!vl)
1369 return -ENOMEM;
1370
1371 aq_ret = i40e_set_vsi_promisc(vf, seid: vsi->seid, multi_enable: allmulti, unicast_enable: alluni,
1372 vl, num_vlans);
1373 kfree(objp: vl);
1374 return aq_ret;
1375 }
1376
1377 /* no VLANs to set on, set on VSI */
1378 aq_ret = i40e_set_vsi_promisc(vf, seid: vsi->seid, multi_enable: allmulti, unicast_enable: alluni,
1379 NULL, num_vlans: 0);
1380 return aq_ret;
1381}
1382
1383/**
1384 * i40e_sync_vfr_reset
1385 * @hw: pointer to hw struct
1386 * @vf_id: VF identifier
1387 *
1388 * Before trigger hardware reset, we need to know if no other process has
1389 * reserved the hardware for any reset operations. This check is done by
1390 * examining the status of the RSTAT1 register used to signal the reset.
1391 **/
1392static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1393{
1394 u32 reg;
1395 int i;
1396
1397 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1398 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1399 I40E_VFINT_ICR0_ADMINQ_MASK;
1400 if (reg)
1401 return 0;
1402
1403 usleep_range(min: 100, max: 200);
1404 }
1405
1406 return -EAGAIN;
1407}
1408
1409/**
1410 * i40e_trigger_vf_reset
1411 * @vf: pointer to the VF structure
1412 * @flr: VFLR was issued or not
1413 *
1414 * Trigger hardware to start a reset for a particular VF. Expects the caller
1415 * to wait the proper amount of time to allow hardware to reset the VF before
1416 * it cleans up and restores VF functionality.
1417 **/
1418static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1419{
1420 struct i40e_pf *pf = vf->pf;
1421 struct i40e_hw *hw = &pf->hw;
1422 u32 reg, reg_idx, bit_idx;
1423 bool vf_active;
1424 u32 radq;
1425
1426 /* warn the VF */
1427 vf_active = test_and_clear_bit(nr: I40E_VF_STATE_ACTIVE, addr: &vf->vf_states);
1428
1429 /* Disable VF's configuration API during reset. The flag is re-enabled
1430 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1431 * It's normally disabled in i40e_free_vf_res(), but it's safer
1432 * to do it earlier to give some time to finish to any VF config
1433 * functions that may still be running at this point.
1434 */
1435 clear_bit(nr: I40E_VF_STATE_INIT, addr: &vf->vf_states);
1436
1437 /* In the case of a VFLR, the HW has already reset the VF and we
1438 * just need to clean up, so don't hit the VFRTRIG register.
1439 */
1440 if (!flr) {
1441 /* Sync VFR reset before trigger next one */
1442 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1443 I40E_VFINT_ICR0_ADMINQ_MASK;
1444 if (vf_active && !radq)
1445 /* waiting for finish reset by virtual driver */
1446 if (i40e_sync_vfr_reset(hw, vf_id: vf->vf_id))
1447 dev_info(&pf->pdev->dev,
1448 "Reset VF %d never finished\n",
1449 vf->vf_id);
1450
1451 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1452 * in progress state in rstat1 register.
1453 */
1454 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1455 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1456 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1457 i40e_flush(hw);
1458 }
1459 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1460 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1461 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1462 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1463 i40e_flush(hw);
1464
1465 if (i40e_quiesce_vf_pci(vf))
1466 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1467 vf->vf_id);
1468}
1469
1470/**
1471 * i40e_cleanup_reset_vf
1472 * @vf: pointer to the VF structure
1473 *
1474 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1475 * have verified whether the reset is finished properly, and ensure the
1476 * minimum amount of wait time has passed.
1477 **/
1478static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1479{
1480 struct i40e_pf *pf = vf->pf;
1481 struct i40e_hw *hw = &pf->hw;
1482 u32 reg;
1483
1484 /* disable promisc modes in case they were enabled */
1485 i40e_config_vf_promiscuous_mode(vf, vsi_id: vf->lan_vsi_id, allmulti: false, alluni: false);
1486
1487 /* free VF resources to begin resetting the VSI state */
1488 i40e_free_vf_res(vf);
1489
1490 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1491 * By doing this we allow HW to access VF memory at any point. If we
1492 * did it any sooner, HW could access memory while it was being freed
1493 * in i40e_free_vf_res(), causing an IOMMU fault.
1494 *
1495 * On the other hand, this needs to be done ASAP, because the VF driver
1496 * is waiting for this to happen and may report a timeout. It's
1497 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1498 * it.
1499 */
1500 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1501 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1502 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1503
1504 /* reallocate VF resources to finish resetting the VSI state */
1505 if (!i40e_alloc_vf_res(vf)) {
1506 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1507 i40e_enable_vf_mappings(vf);
1508 set_bit(nr: I40E_VF_STATE_ACTIVE, addr: &vf->vf_states);
1509 clear_bit(nr: I40E_VF_STATE_DISABLED, addr: &vf->vf_states);
1510 /* Do not notify the client during VF init */
1511 if (!test_and_clear_bit(nr: I40E_VF_STATE_PRE_ENABLE,
1512 addr: &vf->vf_states))
1513 i40e_notify_client_of_vf_reset(pf, vf_id: abs_vf_id);
1514 vf->num_vlan = 0;
1515 }
1516
1517 /* Tell the VF driver the reset is done. This needs to be done only
1518 * after VF has been fully initialized, because the VF driver may
1519 * request resources immediately after setting this flag.
1520 */
1521 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1522}
1523
1524/**
1525 * i40e_reset_vf
1526 * @vf: pointer to the VF structure
1527 * @flr: VFLR was issued or not
1528 *
1529 * Returns true if the VF is in reset, resets successfully, or resets
1530 * are disabled and false otherwise.
1531 **/
1532bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1533{
1534 struct i40e_pf *pf = vf->pf;
1535 struct i40e_hw *hw = &pf->hw;
1536 bool rsd = false;
1537 u32 reg;
1538 int i;
1539
1540 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1541 return true;
1542
1543 /* Bail out if VFs are disabled. */
1544 if (test_bit(__I40E_VF_DISABLE, pf->state))
1545 return true;
1546
1547 /* If VF is being reset already we don't need to continue. */
1548 if (test_and_set_bit(nr: I40E_VF_STATE_RESETTING, addr: &vf->vf_states))
1549 return true;
1550
1551 i40e_trigger_vf_reset(vf, flr);
1552
1553 /* poll VPGEN_VFRSTAT reg to make sure
1554 * that reset is complete
1555 */
1556 for (i = 0; i < 10; i++) {
1557 /* VF reset requires driver to first reset the VF and then
1558 * poll the status register to make sure that the reset
1559 * completed successfully. Due to internal HW FIFO flushes,
1560 * we must wait 10ms before the register will be valid.
1561 */
1562 usleep_range(min: 10000, max: 20000);
1563 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1564 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1565 rsd = true;
1566 break;
1567 }
1568 }
1569
1570 if (flr)
1571 usleep_range(min: 10000, max: 20000);
1572
1573 if (!rsd)
1574 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1575 vf->vf_id);
1576 usleep_range(min: 10000, max: 20000);
1577
1578 /* On initial reset, we don't have any queues to disable */
1579 if (vf->lan_vsi_idx != 0)
1580 i40e_vsi_stop_rings(vsi: pf->vsi[vf->lan_vsi_idx]);
1581
1582 i40e_cleanup_reset_vf(vf);
1583
1584 i40e_flush(hw);
1585 usleep_range(min: 20000, max: 40000);
1586 clear_bit(nr: I40E_VF_STATE_RESETTING, addr: &vf->vf_states);
1587
1588 return true;
1589}
1590
1591/**
1592 * i40e_reset_all_vfs
1593 * @pf: pointer to the PF structure
1594 * @flr: VFLR was issued or not
1595 *
1596 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1597 * VF, then do all the waiting in one chunk, and finally finish restoring each
1598 * VF after the wait. This is useful during PF routines which need to reset
1599 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1600 *
1601 * Returns true if any VFs were reset, and false otherwise.
1602 **/
1603bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1604{
1605 struct i40e_hw *hw = &pf->hw;
1606 struct i40e_vf *vf;
1607 int i, v;
1608 u32 reg;
1609
1610 /* If we don't have any VFs, then there is nothing to reset */
1611 if (!pf->num_alloc_vfs)
1612 return false;
1613
1614 /* If VFs have been disabled, there is no need to reset */
1615 if (test_and_set_bit(nr: __I40E_VF_DISABLE, addr: pf->state))
1616 return false;
1617
1618 /* Begin reset on all VFs at once */
1619 for (v = 0; v < pf->num_alloc_vfs; v++) {
1620 vf = &pf->vf[v];
1621 /* If VF is being reset no need to trigger reset again */
1622 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1623 i40e_trigger_vf_reset(vf: &pf->vf[v], flr);
1624 }
1625
1626 /* HW requires some time to make sure it can flush the FIFO for a VF
1627 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1628 * sequence to make sure that it has completed. We'll keep track of
1629 * the VFs using a simple iterator that increments once that VF has
1630 * finished resetting.
1631 */
1632 for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
1633 usleep_range(min: 10000, max: 20000);
1634
1635 /* Check each VF in sequence, beginning with the VF to fail
1636 * the previous check.
1637 */
1638 while (v < pf->num_alloc_vfs) {
1639 vf = &pf->vf[v];
1640 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
1641 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1642 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1643 break;
1644 }
1645
1646 /* If the current VF has finished resetting, move on
1647 * to the next VF in sequence.
1648 */
1649 v++;
1650 }
1651 }
1652
1653 if (flr)
1654 usleep_range(min: 10000, max: 20000);
1655
1656 /* Display a warning if at least one VF didn't manage to reset in
1657 * time, but continue on with the operation.
1658 */
1659 if (v < pf->num_alloc_vfs)
1660 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1661 pf->vf[v].vf_id);
1662 usleep_range(min: 10000, max: 20000);
1663
1664 /* Begin disabling all the rings associated with VFs, but do not wait
1665 * between each VF.
1666 */
1667 for (v = 0; v < pf->num_alloc_vfs; v++) {
1668 /* On initial reset, we don't have any queues to disable */
1669 if (pf->vf[v].lan_vsi_idx == 0)
1670 continue;
1671
1672 /* If VF is reset in another thread just continue */
1673 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1674 continue;
1675
1676 i40e_vsi_stop_rings_no_wait(vsi: pf->vsi[pf->vf[v].lan_vsi_idx]);
1677 }
1678
1679 /* Now that we've notified HW to disable all of the VF rings, wait
1680 * until they finish.
1681 */
1682 for (v = 0; v < pf->num_alloc_vfs; v++) {
1683 /* On initial reset, we don't have any queues to disable */
1684 if (pf->vf[v].lan_vsi_idx == 0)
1685 continue;
1686
1687 /* If VF is reset in another thread just continue */
1688 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1689 continue;
1690
1691 i40e_vsi_wait_queues_disabled(vsi: pf->vsi[pf->vf[v].lan_vsi_idx]);
1692 }
1693
1694 /* Hw may need up to 50ms to finish disabling the RX queues. We
1695 * minimize the wait by delaying only once for all VFs.
1696 */
1697 mdelay(50);
1698
1699 /* Finish the reset on each VF */
1700 for (v = 0; v < pf->num_alloc_vfs; v++) {
1701 /* If VF is reset in another thread just continue */
1702 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1703 continue;
1704
1705 i40e_cleanup_reset_vf(vf: &pf->vf[v]);
1706 }
1707
1708 i40e_flush(hw);
1709 usleep_range(min: 20000, max: 40000);
1710 clear_bit(nr: __I40E_VF_DISABLE, addr: pf->state);
1711
1712 return true;
1713}
1714
1715/**
1716 * i40e_free_vfs
1717 * @pf: pointer to the PF structure
1718 *
1719 * free VF resources
1720 **/
1721void i40e_free_vfs(struct i40e_pf *pf)
1722{
1723 struct i40e_hw *hw = &pf->hw;
1724 u32 reg_idx, bit_idx;
1725 int i, tmp, vf_id;
1726
1727 if (!pf->vf)
1728 return;
1729
1730 set_bit(nr: __I40E_VFS_RELEASING, addr: pf->state);
1731 while (test_and_set_bit(nr: __I40E_VF_DISABLE, addr: pf->state))
1732 usleep_range(min: 1000, max: 2000);
1733
1734 i40e_notify_client_of_vf_enable(pf, num_vfs: 0);
1735
1736 /* Disable IOV before freeing resources. This lets any VF drivers
1737 * running in the host get themselves cleaned up before we yank
1738 * the carpet out from underneath their feet.
1739 */
1740 if (!pci_vfs_assigned(dev: pf->pdev))
1741 pci_disable_sriov(dev: pf->pdev);
1742 else
1743 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1744
1745 /* Amortize wait time by stopping all VFs at the same time */
1746 for (i = 0; i < pf->num_alloc_vfs; i++) {
1747 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1748 continue;
1749
1750 i40e_vsi_stop_rings_no_wait(vsi: pf->vsi[pf->vf[i].lan_vsi_idx]);
1751 }
1752
1753 for (i = 0; i < pf->num_alloc_vfs; i++) {
1754 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1755 continue;
1756
1757 i40e_vsi_wait_queues_disabled(vsi: pf->vsi[pf->vf[i].lan_vsi_idx]);
1758 }
1759
1760 /* free up VF resources */
1761 tmp = pf->num_alloc_vfs;
1762 pf->num_alloc_vfs = 0;
1763 for (i = 0; i < tmp; i++) {
1764 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1765 i40e_free_vf_res(vf: &pf->vf[i]);
1766 /* disable qp mappings */
1767 i40e_disable_vf_mappings(vf: &pf->vf[i]);
1768 }
1769
1770 kfree(objp: pf->vf);
1771 pf->vf = NULL;
1772
1773 /* This check is for when the driver is unloaded while VFs are
1774 * assigned. Setting the number of VFs to 0 through sysfs is caught
1775 * before this function ever gets called.
1776 */
1777 if (!pci_vfs_assigned(dev: pf->pdev)) {
1778 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1779 * work correctly when SR-IOV gets re-enabled.
1780 */
1781 for (vf_id = 0; vf_id < tmp; vf_id++) {
1782 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1783 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1784 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1785 }
1786 }
1787 clear_bit(nr: __I40E_VF_DISABLE, addr: pf->state);
1788 clear_bit(nr: __I40E_VFS_RELEASING, addr: pf->state);
1789}
1790
1791#ifdef CONFIG_PCI_IOV
1792/**
1793 * i40e_alloc_vfs
1794 * @pf: pointer to the PF structure
1795 * @num_alloc_vfs: number of VFs to allocate
1796 *
1797 * allocate VF resources
1798 **/
1799int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1800{
1801 struct i40e_vf *vfs;
1802 int i, ret = 0;
1803
1804 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1805 i40e_irq_dynamic_disable_icr0(pf);
1806
1807 /* Check to see if we're just allocating resources for extant VFs */
1808 if (pci_num_vf(dev: pf->pdev) != num_alloc_vfs) {
1809 ret = pci_enable_sriov(dev: pf->pdev, nr_virtfn: num_alloc_vfs);
1810 if (ret) {
1811 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1812 pf->num_alloc_vfs = 0;
1813 goto err_iov;
1814 }
1815 }
1816 /* allocate memory */
1817 vfs = kcalloc(n: num_alloc_vfs, size: sizeof(struct i40e_vf), GFP_KERNEL);
1818 if (!vfs) {
1819 ret = -ENOMEM;
1820 goto err_alloc;
1821 }
1822 pf->vf = vfs;
1823
1824 /* apply default profile */
1825 for (i = 0; i < num_alloc_vfs; i++) {
1826 vfs[i].pf = pf;
1827 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1828 vfs[i].vf_id = i;
1829
1830 /* assign default capabilities */
1831 set_bit(nr: I40E_VIRTCHNL_VF_CAP_L2, addr: &vfs[i].vf_caps);
1832 vfs[i].spoofchk = true;
1833
1834 set_bit(nr: I40E_VF_STATE_PRE_ENABLE, addr: &vfs[i].vf_states);
1835
1836 }
1837 pf->num_alloc_vfs = num_alloc_vfs;
1838
1839 /* VF resources get allocated during reset */
1840 i40e_reset_all_vfs(pf, flr: false);
1841
1842 i40e_notify_client_of_vf_enable(pf, num_vfs: num_alloc_vfs);
1843
1844err_alloc:
1845 if (ret)
1846 i40e_free_vfs(pf);
1847err_iov:
1848 /* Re-enable interrupt 0. */
1849 i40e_irq_dynamic_enable_icr0(pf);
1850 return ret;
1851}
1852
1853#endif
1854/**
1855 * i40e_pci_sriov_enable
1856 * @pdev: pointer to a pci_dev structure
1857 * @num_vfs: number of VFs to allocate
1858 *
1859 * Enable or change the number of VFs
1860 **/
1861static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1862{
1863#ifdef CONFIG_PCI_IOV
1864 struct i40e_pf *pf = pci_get_drvdata(pdev);
1865 int pre_existing_vfs = pci_num_vf(dev: pdev);
1866 int err = 0;
1867
1868 if (test_bit(__I40E_TESTING, pf->state)) {
1869 dev_warn(&pdev->dev,
1870 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1871 err = -EPERM;
1872 goto err_out;
1873 }
1874
1875 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1876 i40e_free_vfs(pf);
1877 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1878 goto out;
1879
1880 if (num_vfs > pf->num_req_vfs) {
1881 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1882 num_vfs, pf->num_req_vfs);
1883 err = -EPERM;
1884 goto err_out;
1885 }
1886
1887 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1888 err = i40e_alloc_vfs(pf, num_alloc_vfs: num_vfs);
1889 if (err) {
1890 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1891 goto err_out;
1892 }
1893
1894out:
1895 return num_vfs;
1896
1897err_out:
1898 return err;
1899#endif
1900 return 0;
1901}
1902
1903/**
1904 * i40e_pci_sriov_configure
1905 * @pdev: pointer to a pci_dev structure
1906 * @num_vfs: number of VFs to allocate
1907 *
1908 * Enable or change the number of VFs. Called when the user updates the number
1909 * of VFs in sysfs.
1910 **/
1911int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1912{
1913 struct i40e_pf *pf = pci_get_drvdata(pdev);
1914 int ret = 0;
1915
1916 if (test_and_set_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state)) {
1917 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1918 return -EAGAIN;
1919 }
1920
1921 if (num_vfs) {
1922 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1923 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1924 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1925 }
1926 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1927 goto sriov_configure_out;
1928 }
1929
1930 if (!pci_vfs_assigned(dev: pf->pdev)) {
1931 i40e_free_vfs(pf);
1932 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1933 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1934 } else {
1935 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1936 ret = -EINVAL;
1937 goto sriov_configure_out;
1938 }
1939sriov_configure_out:
1940 clear_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state);
1941 return ret;
1942}
1943
1944/***********************virtual channel routines******************/
1945
1946/**
1947 * i40e_vc_send_msg_to_vf
1948 * @vf: pointer to the VF info
1949 * @v_opcode: virtual channel opcode
1950 * @v_retval: virtual channel return value
1951 * @msg: pointer to the msg buffer
1952 * @msglen: msg length
1953 *
1954 * send msg to VF
1955 **/
1956static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1957 u32 v_retval, u8 *msg, u16 msglen)
1958{
1959 struct i40e_pf *pf;
1960 struct i40e_hw *hw;
1961 int abs_vf_id;
1962 int aq_ret;
1963
1964 /* validate the request */
1965 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1966 return -EINVAL;
1967
1968 pf = vf->pf;
1969 hw = &pf->hw;
1970 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1971
1972 aq_ret = i40e_aq_send_msg_to_vf(hw, vfid: abs_vf_id, v_opcode, v_retval,
1973 msg, msglen, NULL);
1974 if (aq_ret) {
1975 dev_info(&pf->pdev->dev,
1976 "Unable to send the message to VF %d aq_err %d\n",
1977 vf->vf_id, pf->hw.aq.asq_last_status);
1978 return -EIO;
1979 }
1980
1981 return 0;
1982}
1983
1984/**
1985 * i40e_vc_send_resp_to_vf
1986 * @vf: pointer to the VF info
1987 * @opcode: operation code
1988 * @retval: return value
1989 *
1990 * send resp msg to VF
1991 **/
1992static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1993 enum virtchnl_ops opcode,
1994 int retval)
1995{
1996 return i40e_vc_send_msg_to_vf(vf, v_opcode: opcode, v_retval: retval, NULL, msglen: 0);
1997}
1998
1999/**
2000 * i40e_sync_vf_state
2001 * @vf: pointer to the VF info
2002 * @state: VF state
2003 *
2004 * Called from a VF message to synchronize the service with a potential
2005 * VF reset state
2006 **/
2007static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
2008{
2009 int i;
2010
2011 /* When handling some messages, it needs VF state to be set.
2012 * It is possible that this flag is cleared during VF reset,
2013 * so there is a need to wait until the end of the reset to
2014 * handle the request message correctly.
2015 */
2016 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
2017 if (test_bit(state, &vf->vf_states))
2018 return true;
2019 usleep_range(min: 10000, max: 20000);
2020 }
2021
2022 return test_bit(state, &vf->vf_states);
2023}
2024
2025/**
2026 * i40e_vc_get_version_msg
2027 * @vf: pointer to the VF info
2028 * @msg: pointer to the msg buffer
2029 *
2030 * called from the VF to request the API version used by the PF
2031 **/
2032static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
2033{
2034 struct virtchnl_version_info info = {
2035 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
2036 };
2037
2038 vf->vf_ver = *(struct virtchnl_version_info *)msg;
2039 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
2040 if (VF_IS_V10(&vf->vf_ver))
2041 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
2042 return i40e_vc_send_msg_to_vf(vf, v_opcode: VIRTCHNL_OP_VERSION,
2043 v_retval: 0, msg: (u8 *)&info,
2044 msglen: sizeof(struct virtchnl_version_info));
2045}
2046
2047/**
2048 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
2049 * @vf: pointer to VF structure
2050 **/
2051static void i40e_del_qch(struct i40e_vf *vf)
2052{
2053 struct i40e_pf *pf = vf->pf;
2054 int i;
2055
2056 /* first element in the array belongs to primary VF VSI and we shouldn't
2057 * delete it. We should however delete the rest of the VSIs created
2058 */
2059 for (i = 1; i < vf->num_tc; i++) {
2060 if (vf->ch[i].vsi_idx) {
2061 i40e_vsi_release(vsi: pf->vsi[vf->ch[i].vsi_idx]);
2062 vf->ch[i].vsi_idx = 0;
2063 vf->ch[i].vsi_id = 0;
2064 }
2065 }
2066}
2067
2068/**
2069 * i40e_vc_get_max_frame_size
2070 * @vf: pointer to the VF
2071 *
2072 * Max frame size is determined based on the current port's max frame size and
2073 * whether a port VLAN is configured on this VF. The VF is not aware whether
2074 * it's in a port VLAN so the PF needs to account for this in max frame size
2075 * checks and sending the max frame size to the VF.
2076 **/
2077static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2078{
2079 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2080
2081 if (vf->port_vlan_id)
2082 max_frame_size -= VLAN_HLEN;
2083
2084 return max_frame_size;
2085}
2086
2087/**
2088 * i40e_vc_get_vf_resources_msg
2089 * @vf: pointer to the VF info
2090 * @msg: pointer to the msg buffer
2091 *
2092 * called from the VF to request its resources
2093 **/
2094static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2095{
2096 struct virtchnl_vf_resource *vfres = NULL;
2097 struct i40e_pf *pf = vf->pf;
2098 struct i40e_vsi *vsi;
2099 int num_vsis = 1;
2100 int aq_ret = 0;
2101 size_t len = 0;
2102 int ret;
2103
2104 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_INIT)) {
2105 aq_ret = -EINVAL;
2106 goto err;
2107 }
2108
2109 len = virtchnl_struct_size(vfres, vsi_res, num_vsis);
2110 vfres = kzalloc(size: len, GFP_KERNEL);
2111 if (!vfres) {
2112 aq_ret = -ENOMEM;
2113 len = 0;
2114 goto err;
2115 }
2116 if (VF_IS_V11(&vf->vf_ver))
2117 vf->driver_caps = *(u32 *)msg;
2118 else
2119 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2120 VIRTCHNL_VF_OFFLOAD_RSS_REG |
2121 VIRTCHNL_VF_OFFLOAD_VLAN;
2122
2123 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2124 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
2125 vsi = pf->vsi[vf->lan_vsi_idx];
2126 if (!vsi->info.pvid)
2127 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2128
2129 if (i40e_vf_client_capable(pf, vf_id: vf->vf_id) &&
2130 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RDMA)) {
2131 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RDMA;
2132 set_bit(nr: I40E_VF_STATE_RDMAENA, addr: &vf->vf_states);
2133 } else {
2134 clear_bit(nr: I40E_VF_STATE_RDMAENA, addr: &vf->vf_states);
2135 }
2136
2137 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2138 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2139 } else {
2140 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
2141 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2142 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2143 else
2144 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2145 }
2146
2147 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
2148 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2149 vfres->vf_cap_flags |=
2150 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2151 }
2152
2153 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2154 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2155
2156 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
2157 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2158 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2159
2160 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2161 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
2162 dev_err(&pf->pdev->dev,
2163 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2164 vf->vf_id);
2165 aq_ret = -EINVAL;
2166 goto err;
2167 }
2168 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2169 }
2170
2171 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
2172 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2173 vfres->vf_cap_flags |=
2174 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2175 }
2176
2177 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2178 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2179
2180 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2181 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2182
2183 vfres->num_vsis = num_vsis;
2184 vfres->num_queue_pairs = vf->num_queue_pairs;
2185 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2186 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2187 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2188 vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2189
2190 if (vf->lan_vsi_idx) {
2191 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2192 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2193 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2194 /* VFs only use TC 0 */
2195 vfres->vsi_res[0].qset_handle
2196 = le16_to_cpu(vsi->info.qs_handle[0]);
2197 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) {
2198 i40e_del_mac_filter(vsi, macaddr: vf->default_lan_addr.addr);
2199 eth_zero_addr(addr: vf->default_lan_addr.addr);
2200 }
2201 ether_addr_copy(dst: vfres->vsi_res[0].default_mac_addr,
2202 src: vf->default_lan_addr.addr);
2203 }
2204 set_bit(nr: I40E_VF_STATE_ACTIVE, addr: &vf->vf_states);
2205
2206err:
2207 /* send the response back to the VF */
2208 ret = i40e_vc_send_msg_to_vf(vf, v_opcode: VIRTCHNL_OP_GET_VF_RESOURCES,
2209 v_retval: aq_ret, msg: (u8 *)vfres, msglen: len);
2210
2211 kfree(objp: vfres);
2212 return ret;
2213}
2214
2215/**
2216 * i40e_vc_config_promiscuous_mode_msg
2217 * @vf: pointer to the VF info
2218 * @msg: pointer to the msg buffer
2219 *
2220 * called from the VF to configure the promiscuous mode of
2221 * VF vsis
2222 **/
2223static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2224{
2225 struct virtchnl_promisc_info *info =
2226 (struct virtchnl_promisc_info *)msg;
2227 struct i40e_pf *pf = vf->pf;
2228 bool allmulti = false;
2229 bool alluni = false;
2230 int aq_ret = 0;
2231
2232 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
2233 aq_ret = -EINVAL;
2234 goto err_out;
2235 }
2236 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2237 dev_err(&pf->pdev->dev,
2238 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2239 vf->vf_id);
2240
2241 /* Lie to the VF on purpose, because this is an error we can
2242 * ignore. Unprivileged VF is not a virtual channel error.
2243 */
2244 aq_ret = 0;
2245 goto err_out;
2246 }
2247
2248 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2249 aq_ret = -EINVAL;
2250 goto err_out;
2251 }
2252
2253 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id: info->vsi_id)) {
2254 aq_ret = -EINVAL;
2255 goto err_out;
2256 }
2257
2258 /* Multicast promiscuous handling*/
2259 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2260 allmulti = true;
2261
2262 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2263 alluni = true;
2264 aq_ret = i40e_config_vf_promiscuous_mode(vf, vsi_id: info->vsi_id, allmulti,
2265 alluni);
2266 if (aq_ret)
2267 goto err_out;
2268
2269 if (allmulti) {
2270 if (!test_and_set_bit(nr: I40E_VF_STATE_MC_PROMISC,
2271 addr: &vf->vf_states))
2272 dev_info(&pf->pdev->dev,
2273 "VF %d successfully set multicast promiscuous mode\n",
2274 vf->vf_id);
2275 } else if (test_and_clear_bit(nr: I40E_VF_STATE_MC_PROMISC,
2276 addr: &vf->vf_states))
2277 dev_info(&pf->pdev->dev,
2278 "VF %d successfully unset multicast promiscuous mode\n",
2279 vf->vf_id);
2280
2281 if (alluni) {
2282 if (!test_and_set_bit(nr: I40E_VF_STATE_UC_PROMISC,
2283 addr: &vf->vf_states))
2284 dev_info(&pf->pdev->dev,
2285 "VF %d successfully set unicast promiscuous mode\n",
2286 vf->vf_id);
2287 } else if (test_and_clear_bit(nr: I40E_VF_STATE_UC_PROMISC,
2288 addr: &vf->vf_states))
2289 dev_info(&pf->pdev->dev,
2290 "VF %d successfully unset unicast promiscuous mode\n",
2291 vf->vf_id);
2292
2293err_out:
2294 /* send the response to the VF */
2295 return i40e_vc_send_resp_to_vf(vf,
2296 opcode: VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2297 retval: aq_ret);
2298}
2299
2300/**
2301 * i40e_vc_config_queues_msg
2302 * @vf: pointer to the VF info
2303 * @msg: pointer to the msg buffer
2304 *
2305 * called from the VF to configure the rx/tx
2306 * queues
2307 **/
2308static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2309{
2310 struct virtchnl_vsi_queue_config_info *qci =
2311 (struct virtchnl_vsi_queue_config_info *)msg;
2312 struct virtchnl_queue_pair_info *qpi;
2313 u16 vsi_id, vsi_queue_id = 0;
2314 struct i40e_pf *pf = vf->pf;
2315 int i, j = 0, idx = 0;
2316 struct i40e_vsi *vsi;
2317 u16 num_qps_all = 0;
2318 int aq_ret = 0;
2319
2320 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
2321 aq_ret = -EINVAL;
2322 goto error_param;
2323 }
2324
2325 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id: qci->vsi_id)) {
2326 aq_ret = -EINVAL;
2327 goto error_param;
2328 }
2329
2330 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2331 aq_ret = -EINVAL;
2332 goto error_param;
2333 }
2334
2335 if (vf->adq_enabled) {
2336 for (i = 0; i < vf->num_tc; i++)
2337 num_qps_all += vf->ch[i].num_qps;
2338 if (num_qps_all != qci->num_queue_pairs) {
2339 aq_ret = -EINVAL;
2340 goto error_param;
2341 }
2342 }
2343
2344 vsi_id = qci->vsi_id;
2345
2346 for (i = 0; i < qci->num_queue_pairs; i++) {
2347 qpi = &qci->qpair[i];
2348
2349 if (!vf->adq_enabled) {
2350 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2351 qid: qpi->txq.queue_id)) {
2352 aq_ret = -EINVAL;
2353 goto error_param;
2354 }
2355
2356 vsi_queue_id = qpi->txq.queue_id;
2357
2358 if (qpi->txq.vsi_id != qci->vsi_id ||
2359 qpi->rxq.vsi_id != qci->vsi_id ||
2360 qpi->rxq.queue_id != vsi_queue_id) {
2361 aq_ret = -EINVAL;
2362 goto error_param;
2363 }
2364 }
2365
2366 if (vf->adq_enabled) {
2367 if (idx >= ARRAY_SIZE(vf->ch)) {
2368 aq_ret = -ENODEV;
2369 goto error_param;
2370 }
2371 vsi_id = vf->ch[idx].vsi_id;
2372 }
2373
2374 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2375 info: &qpi->rxq) ||
2376 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2377 info: &qpi->txq)) {
2378 aq_ret = -EINVAL;
2379 goto error_param;
2380 }
2381
2382 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2383 * VF does not know about these additional VSIs and all
2384 * it cares is about its own queues. PF configures these queues
2385 * to its appropriate VSIs based on TC mapping
2386 */
2387 if (vf->adq_enabled) {
2388 if (idx >= ARRAY_SIZE(vf->ch)) {
2389 aq_ret = -ENODEV;
2390 goto error_param;
2391 }
2392 if (j == (vf->ch[idx].num_qps - 1)) {
2393 idx++;
2394 j = 0; /* resetting the queue count */
2395 vsi_queue_id = 0;
2396 } else {
2397 j++;
2398 vsi_queue_id++;
2399 }
2400 }
2401 }
2402 /* set vsi num_queue_pairs in use to num configured by VF */
2403 if (!vf->adq_enabled) {
2404 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2405 qci->num_queue_pairs;
2406 } else {
2407 for (i = 0; i < vf->num_tc; i++) {
2408 vsi = pf->vsi[vf->ch[i].vsi_idx];
2409 vsi->num_queue_pairs = vf->ch[i].num_qps;
2410
2411 if (i40e_update_adq_vsi_queues(vsi, vsi_offset: i)) {
2412 aq_ret = -EIO;
2413 goto error_param;
2414 }
2415 }
2416 }
2417
2418error_param:
2419 /* send the response to the VF */
2420 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2421 retval: aq_ret);
2422}
2423
2424/**
2425 * i40e_validate_queue_map - check queue map is valid
2426 * @vf: the VF structure pointer
2427 * @vsi_id: vsi id
2428 * @queuemap: Tx or Rx queue map
2429 *
2430 * check if Tx or Rx queue map is valid
2431 **/
2432static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2433 unsigned long queuemap)
2434{
2435 u16 vsi_queue_id, queue_id;
2436
2437 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2438 if (vf->adq_enabled) {
2439 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2440 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2441 } else {
2442 queue_id = vsi_queue_id;
2443 }
2444
2445 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, qid: queue_id))
2446 return -EINVAL;
2447 }
2448
2449 return 0;
2450}
2451
2452/**
2453 * i40e_vc_config_irq_map_msg
2454 * @vf: pointer to the VF info
2455 * @msg: pointer to the msg buffer
2456 *
2457 * called from the VF to configure the irq to
2458 * queue map
2459 **/
2460static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2461{
2462 struct virtchnl_irq_map_info *irqmap_info =
2463 (struct virtchnl_irq_map_info *)msg;
2464 struct virtchnl_vector_map *map;
2465 int aq_ret = 0;
2466 u16 vsi_id;
2467 int i;
2468
2469 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
2470 aq_ret = -EINVAL;
2471 goto error_param;
2472 }
2473
2474 if (irqmap_info->num_vectors >
2475 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2476 aq_ret = -EINVAL;
2477 goto error_param;
2478 }
2479
2480 for (i = 0; i < irqmap_info->num_vectors; i++) {
2481 map = &irqmap_info->vecmap[i];
2482 /* validate msg params */
2483 if (!i40e_vc_isvalid_vector_id(vf, vector_id: map->vector_id) ||
2484 !i40e_vc_isvalid_vsi_id(vf, vsi_id: map->vsi_id)) {
2485 aq_ret = -EINVAL;
2486 goto error_param;
2487 }
2488 vsi_id = map->vsi_id;
2489
2490 if (i40e_validate_queue_map(vf, vsi_id, queuemap: map->rxq_map)) {
2491 aq_ret = -EINVAL;
2492 goto error_param;
2493 }
2494
2495 if (i40e_validate_queue_map(vf, vsi_id, queuemap: map->txq_map)) {
2496 aq_ret = -EINVAL;
2497 goto error_param;
2498 }
2499
2500 i40e_config_irq_link_list(vf, vsi_id, vecmap: map);
2501 }
2502error_param:
2503 /* send the response to the VF */
2504 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_CONFIG_IRQ_MAP,
2505 retval: aq_ret);
2506}
2507
2508/**
2509 * i40e_ctrl_vf_tx_rings
2510 * @vsi: the SRIOV VSI being configured
2511 * @q_map: bit map of the queues to be enabled
2512 * @enable: start or stop the queue
2513 **/
2514static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2515 bool enable)
2516{
2517 struct i40e_pf *pf = vsi->back;
2518 int ret = 0;
2519 u16 q_id;
2520
2521 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2522 ret = i40e_control_wait_tx_q(seid: vsi->seid, pf,
2523 pf_q: vsi->base_queue + q_id,
2524 is_xdp: false /*is xdp*/, enable);
2525 if (ret)
2526 break;
2527 }
2528 return ret;
2529}
2530
2531/**
2532 * i40e_ctrl_vf_rx_rings
2533 * @vsi: the SRIOV VSI being configured
2534 * @q_map: bit map of the queues to be enabled
2535 * @enable: start or stop the queue
2536 **/
2537static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2538 bool enable)
2539{
2540 struct i40e_pf *pf = vsi->back;
2541 int ret = 0;
2542 u16 q_id;
2543
2544 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2545 ret = i40e_control_wait_rx_q(pf, pf_q: vsi->base_queue + q_id,
2546 enable);
2547 if (ret)
2548 break;
2549 }
2550 return ret;
2551}
2552
2553/**
2554 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2555 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2556 *
2557 * Returns true if validation was successful, else false.
2558 */
2559static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2560{
2561 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2562 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2563 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2564 return false;
2565
2566 return true;
2567}
2568
2569/**
2570 * i40e_vc_enable_queues_msg
2571 * @vf: pointer to the VF info
2572 * @msg: pointer to the msg buffer
2573 *
2574 * called from the VF to enable all or specific queue(s)
2575 **/
2576static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2577{
2578 struct virtchnl_queue_select *vqs =
2579 (struct virtchnl_queue_select *)msg;
2580 struct i40e_pf *pf = vf->pf;
2581 int aq_ret = 0;
2582 int i;
2583
2584 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2585 aq_ret = -EINVAL;
2586 goto error_param;
2587 }
2588
2589 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id: vqs->vsi_id)) {
2590 aq_ret = -EINVAL;
2591 goto error_param;
2592 }
2593
2594 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2595 aq_ret = -EINVAL;
2596 goto error_param;
2597 }
2598
2599 /* Use the queue bit map sent by the VF */
2600 if (i40e_ctrl_vf_rx_rings(vsi: pf->vsi[vf->lan_vsi_idx], q_map: vqs->rx_queues,
2601 enable: true)) {
2602 aq_ret = -EIO;
2603 goto error_param;
2604 }
2605 if (i40e_ctrl_vf_tx_rings(vsi: pf->vsi[vf->lan_vsi_idx], q_map: vqs->tx_queues,
2606 enable: true)) {
2607 aq_ret = -EIO;
2608 goto error_param;
2609 }
2610
2611 /* need to start the rings for additional ADq VSI's as well */
2612 if (vf->adq_enabled) {
2613 /* zero belongs to LAN VSI */
2614 for (i = 1; i < vf->num_tc; i++) {
2615 if (i40e_vsi_start_rings(vsi: pf->vsi[vf->ch[i].vsi_idx]))
2616 aq_ret = -EIO;
2617 }
2618 }
2619
2620error_param:
2621 /* send the response to the VF */
2622 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_ENABLE_QUEUES,
2623 retval: aq_ret);
2624}
2625
2626/**
2627 * i40e_vc_disable_queues_msg
2628 * @vf: pointer to the VF info
2629 * @msg: pointer to the msg buffer
2630 *
2631 * called from the VF to disable all or specific
2632 * queue(s)
2633 **/
2634static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2635{
2636 struct virtchnl_queue_select *vqs =
2637 (struct virtchnl_queue_select *)msg;
2638 struct i40e_pf *pf = vf->pf;
2639 int aq_ret = 0;
2640
2641 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
2642 aq_ret = -EINVAL;
2643 goto error_param;
2644 }
2645
2646 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id: vqs->vsi_id)) {
2647 aq_ret = -EINVAL;
2648 goto error_param;
2649 }
2650
2651 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2652 aq_ret = -EINVAL;
2653 goto error_param;
2654 }
2655
2656 /* Use the queue bit map sent by the VF */
2657 if (i40e_ctrl_vf_tx_rings(vsi: pf->vsi[vf->lan_vsi_idx], q_map: vqs->tx_queues,
2658 enable: false)) {
2659 aq_ret = -EIO;
2660 goto error_param;
2661 }
2662 if (i40e_ctrl_vf_rx_rings(vsi: pf->vsi[vf->lan_vsi_idx], q_map: vqs->rx_queues,
2663 enable: false)) {
2664 aq_ret = -EIO;
2665 goto error_param;
2666 }
2667error_param:
2668 /* send the response to the VF */
2669 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_DISABLE_QUEUES,
2670 retval: aq_ret);
2671}
2672
2673/**
2674 * i40e_check_enough_queue - find big enough queue number
2675 * @vf: pointer to the VF info
2676 * @needed: the number of items needed
2677 *
2678 * Returns the base item index of the queue, or negative for error
2679 **/
2680static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2681{
2682 unsigned int i, cur_queues, more, pool_size;
2683 struct i40e_lump_tracking *pile;
2684 struct i40e_pf *pf = vf->pf;
2685 struct i40e_vsi *vsi;
2686
2687 vsi = pf->vsi[vf->lan_vsi_idx];
2688 cur_queues = vsi->alloc_queue_pairs;
2689
2690 /* if current allocated queues are enough for need */
2691 if (cur_queues >= needed)
2692 return vsi->base_queue;
2693
2694 pile = pf->qp_pile;
2695 if (cur_queues > 0) {
2696 /* if the allocated queues are not zero
2697 * just check if there are enough queues for more
2698 * behind the allocated queues.
2699 */
2700 more = needed - cur_queues;
2701 for (i = vsi->base_queue + cur_queues;
2702 i < pile->num_entries; i++) {
2703 if (pile->list[i] & I40E_PILE_VALID_BIT)
2704 break;
2705
2706 if (more-- == 1)
2707 /* there is enough */
2708 return vsi->base_queue;
2709 }
2710 }
2711
2712 pool_size = 0;
2713 for (i = 0; i < pile->num_entries; i++) {
2714 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2715 pool_size = 0;
2716 continue;
2717 }
2718 if (needed <= ++pool_size)
2719 /* there is enough */
2720 return i;
2721 }
2722
2723 return -ENOMEM;
2724}
2725
2726/**
2727 * i40e_vc_request_queues_msg
2728 * @vf: pointer to the VF info
2729 * @msg: pointer to the msg buffer
2730 *
2731 * VFs get a default number of queues but can use this message to request a
2732 * different number. If the request is successful, PF will reset the VF and
2733 * return 0. If unsuccessful, PF will send message informing VF of number of
2734 * available queues and return result of sending VF a message.
2735 **/
2736static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2737{
2738 struct virtchnl_vf_res_request *vfres =
2739 (struct virtchnl_vf_res_request *)msg;
2740 u16 req_pairs = vfres->num_queue_pairs;
2741 u8 cur_pairs = vf->num_queue_pairs;
2742 struct i40e_pf *pf = vf->pf;
2743
2744 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE))
2745 return -EINVAL;
2746
2747 if (req_pairs > I40E_MAX_VF_QUEUES) {
2748 dev_err(&pf->pdev->dev,
2749 "VF %d tried to request more than %d queues.\n",
2750 vf->vf_id,
2751 I40E_MAX_VF_QUEUES);
2752 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2753 } else if (req_pairs - cur_pairs > pf->queues_left) {
2754 dev_warn(&pf->pdev->dev,
2755 "VF %d requested %d more queues, but only %d left.\n",
2756 vf->vf_id,
2757 req_pairs - cur_pairs,
2758 pf->queues_left);
2759 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2760 } else if (i40e_check_enough_queue(vf, needed: req_pairs) < 0) {
2761 dev_warn(&pf->pdev->dev,
2762 "VF %d requested %d more queues, but there is not enough for it.\n",
2763 vf->vf_id,
2764 req_pairs - cur_pairs);
2765 vfres->num_queue_pairs = cur_pairs;
2766 } else {
2767 /* successful request */
2768 vf->num_req_queues = req_pairs;
2769 i40e_vc_reset_vf(vf, notify_vf: true);
2770 return 0;
2771 }
2772
2773 return i40e_vc_send_msg_to_vf(vf, v_opcode: VIRTCHNL_OP_REQUEST_QUEUES, v_retval: 0,
2774 msg: (u8 *)vfres, msglen: sizeof(*vfres));
2775}
2776
2777/**
2778 * i40e_vc_get_stats_msg
2779 * @vf: pointer to the VF info
2780 * @msg: pointer to the msg buffer
2781 *
2782 * called from the VF to get vsi stats
2783 **/
2784static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2785{
2786 struct virtchnl_queue_select *vqs =
2787 (struct virtchnl_queue_select *)msg;
2788 struct i40e_pf *pf = vf->pf;
2789 struct i40e_eth_stats stats;
2790 int aq_ret = 0;
2791 struct i40e_vsi *vsi;
2792
2793 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2794
2795 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
2796 aq_ret = -EINVAL;
2797 goto error_param;
2798 }
2799
2800 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id: vqs->vsi_id)) {
2801 aq_ret = -EINVAL;
2802 goto error_param;
2803 }
2804
2805 vsi = pf->vsi[vf->lan_vsi_idx];
2806 if (!vsi) {
2807 aq_ret = -EINVAL;
2808 goto error_param;
2809 }
2810 i40e_update_eth_stats(vsi);
2811 stats = vsi->eth_stats;
2812
2813error_param:
2814 /* send the response back to the VF */
2815 return i40e_vc_send_msg_to_vf(vf, v_opcode: VIRTCHNL_OP_GET_STATS, v_retval: aq_ret,
2816 msg: (u8 *)&stats, msglen: sizeof(stats));
2817}
2818
2819#define I40E_MAX_MACVLAN_PER_HW 3072
2820#define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \
2821 (num_ports))
2822/* If the VF is not trusted restrict the number of MAC/VLAN it can program
2823 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2824 */
2825#define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2826#define I40E_VC_MAX_VLAN_PER_VF 16
2827
2828#define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \
2829({ typeof(vf_num) vf_num_ = (vf_num); \
2830 typeof(num_ports) num_ports_ = (num_ports); \
2831 ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \
2832 I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \
2833 I40E_VC_MAX_MAC_ADDR_PER_VF; })
2834/**
2835 * i40e_check_vf_permission
2836 * @vf: pointer to the VF info
2837 * @al: MAC address list from virtchnl
2838 *
2839 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2840 * if any address in the list is not valid. Checks the following conditions:
2841 *
2842 * 1) broadcast and zero addresses are never valid
2843 * 2) unicast addresses are not allowed if the VMM has administratively set
2844 * the VF MAC address, unless the VF is marked as privileged.
2845 * 3) There is enough space to add all the addresses.
2846 *
2847 * Note that to guarantee consistency, it is expected this function be called
2848 * while holding the mac_filter_hash_lock, as otherwise the current number of
2849 * addresses might not be accurate.
2850 **/
2851static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2852 struct virtchnl_ether_addr_list *al)
2853{
2854 struct i40e_pf *pf = vf->pf;
2855 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2856 struct i40e_hw *hw = &pf->hw;
2857 int mac2add_cnt = 0;
2858 int i;
2859
2860 for (i = 0; i < al->num_elements; i++) {
2861 struct i40e_mac_filter *f;
2862 u8 *addr = al->list[i].addr;
2863
2864 if (is_broadcast_ether_addr(addr) ||
2865 is_zero_ether_addr(addr)) {
2866 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2867 addr);
2868 return -EINVAL;
2869 }
2870
2871 /* If the host VMM administrator has set the VF MAC address
2872 * administratively via the ndo_set_vf_mac command then deny
2873 * permission to the VF to add or delete unicast MAC addresses.
2874 * Unless the VF is privileged and then it can do whatever.
2875 * The VF may request to set the MAC address filter already
2876 * assigned to it so do not return an error in that case.
2877 */
2878 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2879 !is_multicast_ether_addr(addr) && vf->pf_set_mac &&
2880 !ether_addr_equal(addr1: addr, addr2: vf->default_lan_addr.addr)) {
2881 dev_err(&pf->pdev->dev,
2882 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2883 return -EPERM;
2884 }
2885
2886 /*count filters that really will be added*/
2887 f = i40e_find_mac(vsi, macaddr: addr);
2888 if (!f)
2889 ++mac2add_cnt;
2890 }
2891
2892 /* If this VF is not privileged, then we can't add more than a limited
2893 * number of addresses. Check to make sure that the additions do not
2894 * push us over the limit.
2895 */
2896 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2897 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2898 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2899 dev_err(&pf->pdev->dev,
2900 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2901 return -EPERM;
2902 }
2903 /* If this VF is trusted, it can use more resources than untrusted.
2904 * However to ensure that every trusted VF has appropriate number of
2905 * resources, divide whole pool of resources per port and then across
2906 * all VFs.
2907 */
2908 } else {
2909 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2910 I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
2911 hw->num_ports)) {
2912 dev_err(&pf->pdev->dev,
2913 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
2914 return -EPERM;
2915 }
2916 }
2917 return 0;
2918}
2919
2920/**
2921 * i40e_vc_ether_addr_type - get type of virtchnl_ether_addr
2922 * @vc_ether_addr: used to extract the type
2923 **/
2924static u8
2925i40e_vc_ether_addr_type(struct virtchnl_ether_addr *vc_ether_addr)
2926{
2927 return vc_ether_addr->type & VIRTCHNL_ETHER_ADDR_TYPE_MASK;
2928}
2929
2930/**
2931 * i40e_is_vc_addr_legacy
2932 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2933 *
2934 * check if the MAC address is from an older VF
2935 **/
2936static bool
2937i40e_is_vc_addr_legacy(struct virtchnl_ether_addr *vc_ether_addr)
2938{
2939 return i40e_vc_ether_addr_type(vc_ether_addr) ==
2940 VIRTCHNL_ETHER_ADDR_LEGACY;
2941}
2942
2943/**
2944 * i40e_is_vc_addr_primary
2945 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2946 *
2947 * check if the MAC address is the VF's primary MAC
2948 * This function should only be called when the MAC address in
2949 * virtchnl_ether_addr is a valid unicast MAC
2950 **/
2951static bool
2952i40e_is_vc_addr_primary(struct virtchnl_ether_addr *vc_ether_addr)
2953{
2954 return i40e_vc_ether_addr_type(vc_ether_addr) ==
2955 VIRTCHNL_ETHER_ADDR_PRIMARY;
2956}
2957
2958/**
2959 * i40e_update_vf_mac_addr
2960 * @vf: VF to update
2961 * @vc_ether_addr: structure from VIRTCHNL with MAC to add
2962 *
2963 * update the VF's cached hardware MAC if allowed
2964 **/
2965static void
2966i40e_update_vf_mac_addr(struct i40e_vf *vf,
2967 struct virtchnl_ether_addr *vc_ether_addr)
2968{
2969 u8 *mac_addr = vc_ether_addr->addr;
2970
2971 if (!is_valid_ether_addr(addr: mac_addr))
2972 return;
2973
2974 /* If request to add MAC filter is a primary request update its default
2975 * MAC address with the requested one. If it is a legacy request then
2976 * check if current default is empty if so update the default MAC
2977 */
2978 if (i40e_is_vc_addr_primary(vc_ether_addr)) {
2979 ether_addr_copy(dst: vf->default_lan_addr.addr, src: mac_addr);
2980 } else if (i40e_is_vc_addr_legacy(vc_ether_addr)) {
2981 if (is_zero_ether_addr(addr: vf->default_lan_addr.addr))
2982 ether_addr_copy(dst: vf->default_lan_addr.addr, src: mac_addr);
2983 }
2984}
2985
2986/**
2987 * i40e_vc_add_mac_addr_msg
2988 * @vf: pointer to the VF info
2989 * @msg: pointer to the msg buffer
2990 *
2991 * add guest mac address filter
2992 **/
2993static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2994{
2995 struct virtchnl_ether_addr_list *al =
2996 (struct virtchnl_ether_addr_list *)msg;
2997 struct i40e_pf *pf = vf->pf;
2998 struct i40e_vsi *vsi = NULL;
2999 int ret = 0;
3000 int i;
3001
3002 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE) ||
3003 !i40e_vc_isvalid_vsi_id(vf, vsi_id: al->vsi_id)) {
3004 ret = -EINVAL;
3005 goto error_param;
3006 }
3007
3008 vsi = pf->vsi[vf->lan_vsi_idx];
3009
3010 /* Lock once, because all function inside for loop accesses VSI's
3011 * MAC filter list which needs to be protected using same lock.
3012 */
3013 spin_lock_bh(lock: &vsi->mac_filter_hash_lock);
3014
3015 ret = i40e_check_vf_permission(vf, al);
3016 if (ret) {
3017 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
3018 goto error_param;
3019 }
3020
3021 /* add new addresses to the list */
3022 for (i = 0; i < al->num_elements; i++) {
3023 struct i40e_mac_filter *f;
3024
3025 f = i40e_find_mac(vsi, macaddr: al->list[i].addr);
3026 if (!f) {
3027 f = i40e_add_mac_filter(vsi, macaddr: al->list[i].addr);
3028
3029 if (!f) {
3030 dev_err(&pf->pdev->dev,
3031 "Unable to add MAC filter %pM for VF %d\n",
3032 al->list[i].addr, vf->vf_id);
3033 ret = -EINVAL;
3034 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
3035 goto error_param;
3036 }
3037 }
3038 i40e_update_vf_mac_addr(vf, vc_ether_addr: &al->list[i]);
3039 }
3040 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
3041
3042 /* program the updated filter list */
3043 ret = i40e_sync_vsi_filters(vsi);
3044 if (ret)
3045 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3046 vf->vf_id, ret);
3047
3048error_param:
3049 /* send the response to the VF */
3050 return i40e_vc_send_msg_to_vf(vf, v_opcode: VIRTCHNL_OP_ADD_ETH_ADDR,
3051 v_retval: ret, NULL, msglen: 0);
3052}
3053
3054/**
3055 * i40e_vc_del_mac_addr_msg
3056 * @vf: pointer to the VF info
3057 * @msg: pointer to the msg buffer
3058 *
3059 * remove guest mac address filter
3060 **/
3061static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3062{
3063 struct virtchnl_ether_addr_list *al =
3064 (struct virtchnl_ether_addr_list *)msg;
3065 bool was_unimac_deleted = false;
3066 struct i40e_pf *pf = vf->pf;
3067 struct i40e_vsi *vsi = NULL;
3068 int ret = 0;
3069 int i;
3070
3071 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE) ||
3072 !i40e_vc_isvalid_vsi_id(vf, vsi_id: al->vsi_id)) {
3073 ret = -EINVAL;
3074 goto error_param;
3075 }
3076
3077 for (i = 0; i < al->num_elements; i++) {
3078 if (is_broadcast_ether_addr(addr: al->list[i].addr) ||
3079 is_zero_ether_addr(addr: al->list[i].addr)) {
3080 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
3081 al->list[i].addr, vf->vf_id);
3082 ret = -EINVAL;
3083 goto error_param;
3084 }
3085 if (ether_addr_equal(addr1: al->list[i].addr, addr2: vf->default_lan_addr.addr))
3086 was_unimac_deleted = true;
3087 }
3088 vsi = pf->vsi[vf->lan_vsi_idx];
3089
3090 spin_lock_bh(lock: &vsi->mac_filter_hash_lock);
3091 /* delete addresses from the list */
3092 for (i = 0; i < al->num_elements; i++)
3093 if (i40e_del_mac_filter(vsi, macaddr: al->list[i].addr)) {
3094 ret = -EINVAL;
3095 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
3096 goto error_param;
3097 }
3098
3099 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
3100
3101 if (was_unimac_deleted)
3102 eth_zero_addr(addr: vf->default_lan_addr.addr);
3103
3104 /* program the updated filter list */
3105 ret = i40e_sync_vsi_filters(vsi);
3106 if (ret)
3107 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3108 vf->vf_id, ret);
3109
3110 if (vf->trusted && was_unimac_deleted) {
3111 struct i40e_mac_filter *f;
3112 struct hlist_node *h;
3113 u8 *macaddr = NULL;
3114 int bkt;
3115
3116 /* set last unicast mac address as default */
3117 spin_lock_bh(lock: &vsi->mac_filter_hash_lock);
3118 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3119 if (is_valid_ether_addr(addr: f->macaddr))
3120 macaddr = f->macaddr;
3121 }
3122 if (macaddr)
3123 ether_addr_copy(dst: vf->default_lan_addr.addr, src: macaddr);
3124 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
3125 }
3126error_param:
3127 /* send the response to the VF */
3128 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_DEL_ETH_ADDR, retval: ret);
3129}
3130
3131/**
3132 * i40e_vc_add_vlan_msg
3133 * @vf: pointer to the VF info
3134 * @msg: pointer to the msg buffer
3135 *
3136 * program guest vlan id
3137 **/
3138static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3139{
3140 struct virtchnl_vlan_filter_list *vfl =
3141 (struct virtchnl_vlan_filter_list *)msg;
3142 struct i40e_pf *pf = vf->pf;
3143 struct i40e_vsi *vsi = NULL;
3144 int aq_ret = 0;
3145 int i;
3146
3147 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3148 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3149 dev_err(&pf->pdev->dev,
3150 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3151 goto error_param;
3152 }
3153 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3154 !i40e_vc_isvalid_vsi_id(vf, vsi_id: vfl->vsi_id)) {
3155 aq_ret = -EINVAL;
3156 goto error_param;
3157 }
3158
3159 for (i = 0; i < vfl->num_elements; i++) {
3160 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3161 aq_ret = -EINVAL;
3162 dev_err(&pf->pdev->dev,
3163 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3164 goto error_param;
3165 }
3166 }
3167 vsi = pf->vsi[vf->lan_vsi_idx];
3168 if (vsi->info.pvid) {
3169 aq_ret = -EINVAL;
3170 goto error_param;
3171 }
3172
3173 i40e_vlan_stripping_enable(vsi);
3174 for (i = 0; i < vfl->num_elements; i++) {
3175 /* add new VLAN filter */
3176 int ret = i40e_vsi_add_vlan(vsi, vid: vfl->vlan_id[i]);
3177 if (!ret)
3178 vf->num_vlan++;
3179
3180 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3181 i40e_aq_set_vsi_uc_promisc_on_vlan(hw: &pf->hw, seid: vsi->seid,
3182 enable: true,
3183 vid: vfl->vlan_id[i],
3184 NULL);
3185 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3186 i40e_aq_set_vsi_mc_promisc_on_vlan(hw: &pf->hw, seid: vsi->seid,
3187 enable: true,
3188 vid: vfl->vlan_id[i],
3189 NULL);
3190
3191 if (ret)
3192 dev_err(&pf->pdev->dev,
3193 "Unable to add VLAN filter %d for VF %d, error %d\n",
3194 vfl->vlan_id[i], vf->vf_id, ret);
3195 }
3196
3197error_param:
3198 /* send the response to the VF */
3199 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_ADD_VLAN, retval: aq_ret);
3200}
3201
3202/**
3203 * i40e_vc_remove_vlan_msg
3204 * @vf: pointer to the VF info
3205 * @msg: pointer to the msg buffer
3206 *
3207 * remove programmed guest vlan id
3208 **/
3209static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3210{
3211 struct virtchnl_vlan_filter_list *vfl =
3212 (struct virtchnl_vlan_filter_list *)msg;
3213 struct i40e_pf *pf = vf->pf;
3214 struct i40e_vsi *vsi = NULL;
3215 int aq_ret = 0;
3216 int i;
3217
3218 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE) ||
3219 !i40e_vc_isvalid_vsi_id(vf, vsi_id: vfl->vsi_id)) {
3220 aq_ret = -EINVAL;
3221 goto error_param;
3222 }
3223
3224 for (i = 0; i < vfl->num_elements; i++) {
3225 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3226 aq_ret = -EINVAL;
3227 goto error_param;
3228 }
3229 }
3230
3231 vsi = pf->vsi[vf->lan_vsi_idx];
3232 if (vsi->info.pvid) {
3233 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3234 aq_ret = -EINVAL;
3235 goto error_param;
3236 }
3237
3238 for (i = 0; i < vfl->num_elements; i++) {
3239 i40e_vsi_kill_vlan(vsi, vid: vfl->vlan_id[i]);
3240 vf->num_vlan--;
3241
3242 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3243 i40e_aq_set_vsi_uc_promisc_on_vlan(hw: &pf->hw, seid: vsi->seid,
3244 enable: false,
3245 vid: vfl->vlan_id[i],
3246 NULL);
3247 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3248 i40e_aq_set_vsi_mc_promisc_on_vlan(hw: &pf->hw, seid: vsi->seid,
3249 enable: false,
3250 vid: vfl->vlan_id[i],
3251 NULL);
3252 }
3253
3254error_param:
3255 /* send the response to the VF */
3256 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_DEL_VLAN, retval: aq_ret);
3257}
3258
3259/**
3260 * i40e_vc_rdma_msg
3261 * @vf: pointer to the VF info
3262 * @msg: pointer to the msg buffer
3263 * @msglen: msg length
3264 *
3265 * called from the VF for the iwarp msgs
3266 **/
3267static int i40e_vc_rdma_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3268{
3269 struct i40e_pf *pf = vf->pf;
3270 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3271 int aq_ret = 0;
3272
3273 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3274 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3275 aq_ret = -EINVAL;
3276 goto error_param;
3277 }
3278
3279 i40e_notify_client_of_vf_msg(vsi: pf->vsi[pf->lan_vsi], vf_id: abs_vf_id,
3280 msg, len: msglen);
3281
3282error_param:
3283 /* send the response to the VF */
3284 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_RDMA,
3285 retval: aq_ret);
3286}
3287
3288/**
3289 * i40e_vc_rdma_qvmap_msg
3290 * @vf: pointer to the VF info
3291 * @msg: pointer to the msg buffer
3292 * @config: config qvmap or release it
3293 *
3294 * called from the VF for the iwarp msgs
3295 **/
3296static int i40e_vc_rdma_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3297{
3298 struct virtchnl_rdma_qvlist_info *qvlist_info =
3299 (struct virtchnl_rdma_qvlist_info *)msg;
3300 int aq_ret = 0;
3301
3302 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3303 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3304 aq_ret = -EINVAL;
3305 goto error_param;
3306 }
3307
3308 if (config) {
3309 if (i40e_config_rdma_qvlist(vf, qvlist_info))
3310 aq_ret = -EINVAL;
3311 } else {
3312 i40e_release_rdma_qvlist(vf);
3313 }
3314
3315error_param:
3316 /* send the response to the VF */
3317 return i40e_vc_send_resp_to_vf(vf,
3318 opcode: config ? VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP :
3319 VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP,
3320 retval: aq_ret);
3321}
3322
3323/**
3324 * i40e_vc_config_rss_key
3325 * @vf: pointer to the VF info
3326 * @msg: pointer to the msg buffer
3327 *
3328 * Configure the VF's RSS key
3329 **/
3330static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3331{
3332 struct virtchnl_rss_key *vrk =
3333 (struct virtchnl_rss_key *)msg;
3334 struct i40e_pf *pf = vf->pf;
3335 struct i40e_vsi *vsi = NULL;
3336 int aq_ret = 0;
3337
3338 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE) ||
3339 !i40e_vc_isvalid_vsi_id(vf, vsi_id: vrk->vsi_id) ||
3340 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3341 aq_ret = -EINVAL;
3342 goto err;
3343 }
3344
3345 vsi = pf->vsi[vf->lan_vsi_idx];
3346 aq_ret = i40e_config_rss(vsi, seed: vrk->key, NULL, lut_size: 0);
3347err:
3348 /* send the response to the VF */
3349 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_CONFIG_RSS_KEY,
3350 retval: aq_ret);
3351}
3352
3353/**
3354 * i40e_vc_config_rss_lut
3355 * @vf: pointer to the VF info
3356 * @msg: pointer to the msg buffer
3357 *
3358 * Configure the VF's RSS LUT
3359 **/
3360static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3361{
3362 struct virtchnl_rss_lut *vrl =
3363 (struct virtchnl_rss_lut *)msg;
3364 struct i40e_pf *pf = vf->pf;
3365 struct i40e_vsi *vsi = NULL;
3366 int aq_ret = 0;
3367 u16 i;
3368
3369 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE) ||
3370 !i40e_vc_isvalid_vsi_id(vf, vsi_id: vrl->vsi_id) ||
3371 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3372 aq_ret = -EINVAL;
3373 goto err;
3374 }
3375
3376 for (i = 0; i < vrl->lut_entries; i++)
3377 if (vrl->lut[i] >= vf->num_queue_pairs) {
3378 aq_ret = -EINVAL;
3379 goto err;
3380 }
3381
3382 vsi = pf->vsi[vf->lan_vsi_idx];
3383 aq_ret = i40e_config_rss(vsi, NULL, lut: vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3384 /* send the response to the VF */
3385err:
3386 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_CONFIG_RSS_LUT,
3387 retval: aq_ret);
3388}
3389
3390/**
3391 * i40e_vc_get_rss_hena
3392 * @vf: pointer to the VF info
3393 * @msg: pointer to the msg buffer
3394 *
3395 * Return the RSS HENA bits allowed by the hardware
3396 **/
3397static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3398{
3399 struct virtchnl_rss_hena *vrh = NULL;
3400 struct i40e_pf *pf = vf->pf;
3401 int aq_ret = 0;
3402 int len = 0;
3403
3404 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
3405 aq_ret = -EINVAL;
3406 goto err;
3407 }
3408 len = sizeof(struct virtchnl_rss_hena);
3409
3410 vrh = kzalloc(size: len, GFP_KERNEL);
3411 if (!vrh) {
3412 aq_ret = -ENOMEM;
3413 len = 0;
3414 goto err;
3415 }
3416 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3417err:
3418 /* send the response back to the VF */
3419 aq_ret = i40e_vc_send_msg_to_vf(vf, v_opcode: VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3420 v_retval: aq_ret, msg: (u8 *)vrh, msglen: len);
3421 kfree(objp: vrh);
3422 return aq_ret;
3423}
3424
3425/**
3426 * i40e_vc_set_rss_hena
3427 * @vf: pointer to the VF info
3428 * @msg: pointer to the msg buffer
3429 *
3430 * Set the RSS HENA bits for the VF
3431 **/
3432static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3433{
3434 struct virtchnl_rss_hena *vrh =
3435 (struct virtchnl_rss_hena *)msg;
3436 struct i40e_pf *pf = vf->pf;
3437 struct i40e_hw *hw = &pf->hw;
3438 int aq_ret = 0;
3439
3440 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
3441 aq_ret = -EINVAL;
3442 goto err;
3443 }
3444 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), reg_val: (u32)vrh->hena);
3445 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3446 reg_val: (u32)(vrh->hena >> 32));
3447
3448 /* send the response to the VF */
3449err:
3450 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_SET_RSS_HENA, retval: aq_ret);
3451}
3452
3453/**
3454 * i40e_vc_enable_vlan_stripping
3455 * @vf: pointer to the VF info
3456 * @msg: pointer to the msg buffer
3457 *
3458 * Enable vlan header stripping for the VF
3459 **/
3460static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3461{
3462 struct i40e_vsi *vsi;
3463 int aq_ret = 0;
3464
3465 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
3466 aq_ret = -EINVAL;
3467 goto err;
3468 }
3469
3470 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3471 i40e_vlan_stripping_enable(vsi);
3472
3473 /* send the response to the VF */
3474err:
3475 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3476 retval: aq_ret);
3477}
3478
3479/**
3480 * i40e_vc_disable_vlan_stripping
3481 * @vf: pointer to the VF info
3482 * @msg: pointer to the msg buffer
3483 *
3484 * Disable vlan header stripping for the VF
3485 **/
3486static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3487{
3488 struct i40e_vsi *vsi;
3489 int aq_ret = 0;
3490
3491 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
3492 aq_ret = -EINVAL;
3493 goto err;
3494 }
3495
3496 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3497 i40e_vlan_stripping_disable(vsi);
3498
3499 /* send the response to the VF */
3500err:
3501 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3502 retval: aq_ret);
3503}
3504
3505/**
3506 * i40e_validate_cloud_filter
3507 * @vf: pointer to VF structure
3508 * @tc_filter: pointer to filter requested
3509 *
3510 * This function validates cloud filter programmed as TC filter for ADq
3511 **/
3512static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3513 struct virtchnl_filter *tc_filter)
3514{
3515 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3516 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3517 struct i40e_pf *pf = vf->pf;
3518 struct i40e_vsi *vsi = NULL;
3519 struct i40e_mac_filter *f;
3520 struct hlist_node *h;
3521 bool found = false;
3522 int bkt;
3523
3524 if (!tc_filter->action) {
3525 dev_info(&pf->pdev->dev,
3526 "VF %d: Currently ADq doesn't support Drop Action\n",
3527 vf->vf_id);
3528 goto err;
3529 }
3530
3531 /* action_meta is TC number here to which the filter is applied */
3532 if (!tc_filter->action_meta ||
3533 tc_filter->action_meta > I40E_MAX_VF_VSI) {
3534 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3535 vf->vf_id, tc_filter->action_meta);
3536 goto err;
3537 }
3538
3539 /* Check filter if it's programmed for advanced mode or basic mode.
3540 * There are two ADq modes (for VF only),
3541 * 1. Basic mode: intended to allow as many filter options as possible
3542 * to be added to a VF in Non-trusted mode. Main goal is
3543 * to add filters to its own MAC and VLAN id.
3544 * 2. Advanced mode: is for allowing filters to be applied other than
3545 * its own MAC or VLAN. This mode requires the VF to be
3546 * Trusted.
3547 */
3548 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3549 vsi = pf->vsi[vf->lan_vsi_idx];
3550 f = i40e_find_mac(vsi, macaddr: data.dst_mac);
3551
3552 if (!f) {
3553 dev_info(&pf->pdev->dev,
3554 "Destination MAC %pM doesn't belong to VF %d\n",
3555 data.dst_mac, vf->vf_id);
3556 goto err;
3557 }
3558
3559 if (mask.vlan_id) {
3560 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3561 hlist) {
3562 if (f->vlan == ntohs(data.vlan_id)) {
3563 found = true;
3564 break;
3565 }
3566 }
3567 if (!found) {
3568 dev_info(&pf->pdev->dev,
3569 "VF %d doesn't have any VLAN id %u\n",
3570 vf->vf_id, ntohs(data.vlan_id));
3571 goto err;
3572 }
3573 }
3574 } else {
3575 /* Check if VF is trusted */
3576 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3577 dev_err(&pf->pdev->dev,
3578 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3579 vf->vf_id);
3580 return -EIO;
3581 }
3582 }
3583
3584 if (mask.dst_mac[0] & data.dst_mac[0]) {
3585 if (is_broadcast_ether_addr(addr: data.dst_mac) ||
3586 is_zero_ether_addr(addr: data.dst_mac)) {
3587 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3588 vf->vf_id, data.dst_mac);
3589 goto err;
3590 }
3591 }
3592
3593 if (mask.src_mac[0] & data.src_mac[0]) {
3594 if (is_broadcast_ether_addr(addr: data.src_mac) ||
3595 is_zero_ether_addr(addr: data.src_mac)) {
3596 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3597 vf->vf_id, data.src_mac);
3598 goto err;
3599 }
3600 }
3601
3602 if (mask.dst_port & data.dst_port) {
3603 if (!data.dst_port) {
3604 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3605 vf->vf_id);
3606 goto err;
3607 }
3608 }
3609
3610 if (mask.src_port & data.src_port) {
3611 if (!data.src_port) {
3612 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3613 vf->vf_id);
3614 goto err;
3615 }
3616 }
3617
3618 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3619 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3620 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3621 vf->vf_id);
3622 goto err;
3623 }
3624
3625 if (mask.vlan_id & data.vlan_id) {
3626 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3627 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3628 vf->vf_id);
3629 goto err;
3630 }
3631 }
3632
3633 return 0;
3634err:
3635 return -EIO;
3636}
3637
3638/**
3639 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3640 * @vf: pointer to the VF info
3641 * @seid: seid of the vsi it is searching for
3642 **/
3643static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3644{
3645 struct i40e_pf *pf = vf->pf;
3646 struct i40e_vsi *vsi = NULL;
3647 int i;
3648
3649 for (i = 0; i < vf->num_tc ; i++) {
3650 vsi = i40e_find_vsi_from_id(pf, id: vf->ch[i].vsi_id);
3651 if (vsi && vsi->seid == seid)
3652 return vsi;
3653 }
3654 return NULL;
3655}
3656
3657/**
3658 * i40e_del_all_cloud_filters
3659 * @vf: pointer to the VF info
3660 *
3661 * This function deletes all cloud filters
3662 **/
3663static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3664{
3665 struct i40e_cloud_filter *cfilter = NULL;
3666 struct i40e_pf *pf = vf->pf;
3667 struct i40e_vsi *vsi = NULL;
3668 struct hlist_node *node;
3669 int ret;
3670
3671 hlist_for_each_entry_safe(cfilter, node,
3672 &vf->cloud_filter_list, cloud_node) {
3673 vsi = i40e_find_vsi_from_seid(vf, seid: cfilter->seid);
3674
3675 if (!vsi) {
3676 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3677 vf->vf_id, cfilter->seid);
3678 continue;
3679 }
3680
3681 if (cfilter->dst_port)
3682 ret = i40e_add_del_cloud_filter_big_buf(vsi, filter: cfilter,
3683 add: false);
3684 else
3685 ret = i40e_add_del_cloud_filter(vsi, filter: cfilter, add: false);
3686 if (ret)
3687 dev_err(&pf->pdev->dev,
3688 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3689 vf->vf_id, ERR_PTR(ret),
3690 i40e_aq_str(&pf->hw,
3691 pf->hw.aq.asq_last_status));
3692
3693 hlist_del(n: &cfilter->cloud_node);
3694 kfree(objp: cfilter);
3695 vf->num_cloud_filters--;
3696 }
3697}
3698
3699/**
3700 * i40e_vc_del_cloud_filter
3701 * @vf: pointer to the VF info
3702 * @msg: pointer to the msg buffer
3703 *
3704 * This function deletes a cloud filter programmed as TC filter for ADq
3705 **/
3706static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3707{
3708 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3709 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3710 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3711 struct i40e_cloud_filter cfilter, *cf = NULL;
3712 struct i40e_pf *pf = vf->pf;
3713 struct i40e_vsi *vsi = NULL;
3714 struct hlist_node *node;
3715 int aq_ret = 0;
3716 int i, ret;
3717
3718 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
3719 aq_ret = -EINVAL;
3720 goto err;
3721 }
3722
3723 if (!vf->adq_enabled) {
3724 dev_info(&pf->pdev->dev,
3725 "VF %d: ADq not enabled, can't apply cloud filter\n",
3726 vf->vf_id);
3727 aq_ret = -EINVAL;
3728 goto err;
3729 }
3730
3731 if (i40e_validate_cloud_filter(vf, tc_filter: vcf)) {
3732 dev_info(&pf->pdev->dev,
3733 "VF %d: Invalid input, can't apply cloud filter\n",
3734 vf->vf_id);
3735 aq_ret = -EINVAL;
3736 goto err;
3737 }
3738
3739 memset(&cfilter, 0, sizeof(cfilter));
3740 /* parse destination mac address */
3741 for (i = 0; i < ETH_ALEN; i++)
3742 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3743
3744 /* parse source mac address */
3745 for (i = 0; i < ETH_ALEN; i++)
3746 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3747
3748 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3749 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3750 cfilter.src_port = mask.src_port & tcf.src_port;
3751
3752 switch (vcf->flow_type) {
3753 case VIRTCHNL_TCP_V4_FLOW:
3754 cfilter.n_proto = ETH_P_IP;
3755 if (mask.dst_ip[0] & tcf.dst_ip[0])
3756 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3757 ARRAY_SIZE(tcf.dst_ip));
3758 else if (mask.src_ip[0] & tcf.dst_ip[0])
3759 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3760 ARRAY_SIZE(tcf.dst_ip));
3761 break;
3762 case VIRTCHNL_TCP_V6_FLOW:
3763 cfilter.n_proto = ETH_P_IPV6;
3764 if (mask.dst_ip[3] & tcf.dst_ip[3])
3765 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3766 sizeof(cfilter.ip.v6.dst_ip6));
3767 if (mask.src_ip[3] & tcf.src_ip[3])
3768 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3769 sizeof(cfilter.ip.v6.src_ip6));
3770 break;
3771 default:
3772 /* TC filter can be configured based on different combinations
3773 * and in this case IP is not a part of filter config
3774 */
3775 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3776 vf->vf_id);
3777 }
3778
3779 /* get the vsi to which the tc belongs to */
3780 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3781 cfilter.seid = vsi->seid;
3782 cfilter.flags = vcf->field_flags;
3783
3784 /* Deleting TC filter */
3785 if (tcf.dst_port)
3786 ret = i40e_add_del_cloud_filter_big_buf(vsi, filter: &cfilter, add: false);
3787 else
3788 ret = i40e_add_del_cloud_filter(vsi, filter: &cfilter, add: false);
3789 if (ret) {
3790 dev_err(&pf->pdev->dev,
3791 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3792 vf->vf_id, ERR_PTR(ret),
3793 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3794 goto err;
3795 }
3796
3797 hlist_for_each_entry_safe(cf, node,
3798 &vf->cloud_filter_list, cloud_node) {
3799 if (cf->seid != cfilter.seid)
3800 continue;
3801 if (mask.dst_port)
3802 if (cfilter.dst_port != cf->dst_port)
3803 continue;
3804 if (mask.dst_mac[0])
3805 if (!ether_addr_equal(addr1: cf->src_mac, addr2: cfilter.src_mac))
3806 continue;
3807 /* for ipv4 data to be valid, only first byte of mask is set */
3808 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3809 if (memcmp(p: &cfilter.ip.v4.dst_ip, q: &cf->ip.v4.dst_ip,
3810 ARRAY_SIZE(tcf.dst_ip)))
3811 continue;
3812 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3813 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3814 if (memcmp(p: &cfilter.ip.v6.dst_ip6, q: &cf->ip.v6.dst_ip6,
3815 size: sizeof(cfilter.ip.v6.src_ip6)))
3816 continue;
3817 if (mask.vlan_id)
3818 if (cfilter.vlan_id != cf->vlan_id)
3819 continue;
3820
3821 hlist_del(n: &cf->cloud_node);
3822 kfree(objp: cf);
3823 vf->num_cloud_filters--;
3824 }
3825
3826err:
3827 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_DEL_CLOUD_FILTER,
3828 retval: aq_ret);
3829}
3830
3831/**
3832 * i40e_vc_add_cloud_filter
3833 * @vf: pointer to the VF info
3834 * @msg: pointer to the msg buffer
3835 *
3836 * This function adds a cloud filter programmed as TC filter for ADq
3837 **/
3838static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3839{
3840 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3841 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3842 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3843 struct i40e_cloud_filter *cfilter = NULL;
3844 struct i40e_pf *pf = vf->pf;
3845 struct i40e_vsi *vsi = NULL;
3846 int aq_ret = 0;
3847 int i, ret;
3848
3849 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
3850 aq_ret = -EINVAL;
3851 goto err_out;
3852 }
3853
3854 if (!vf->adq_enabled) {
3855 dev_info(&pf->pdev->dev,
3856 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3857 vf->vf_id);
3858 aq_ret = -EINVAL;
3859 goto err_out;
3860 }
3861
3862 if (i40e_validate_cloud_filter(vf, tc_filter: vcf)) {
3863 dev_info(&pf->pdev->dev,
3864 "VF %d: Invalid input/s, can't apply cloud filter\n",
3865 vf->vf_id);
3866 aq_ret = -EINVAL;
3867 goto err_out;
3868 }
3869
3870 cfilter = kzalloc(size: sizeof(*cfilter), GFP_KERNEL);
3871 if (!cfilter)
3872 return -ENOMEM;
3873
3874 /* parse destination mac address */
3875 for (i = 0; i < ETH_ALEN; i++)
3876 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3877
3878 /* parse source mac address */
3879 for (i = 0; i < ETH_ALEN; i++)
3880 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3881
3882 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3883 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3884 cfilter->src_port = mask.src_port & tcf.src_port;
3885
3886 switch (vcf->flow_type) {
3887 case VIRTCHNL_TCP_V4_FLOW:
3888 cfilter->n_proto = ETH_P_IP;
3889 if (mask.dst_ip[0] & tcf.dst_ip[0])
3890 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3891 ARRAY_SIZE(tcf.dst_ip));
3892 else if (mask.src_ip[0] & tcf.dst_ip[0])
3893 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3894 ARRAY_SIZE(tcf.dst_ip));
3895 break;
3896 case VIRTCHNL_TCP_V6_FLOW:
3897 cfilter->n_proto = ETH_P_IPV6;
3898 if (mask.dst_ip[3] & tcf.dst_ip[3])
3899 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3900 sizeof(cfilter->ip.v6.dst_ip6));
3901 if (mask.src_ip[3] & tcf.src_ip[3])
3902 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3903 sizeof(cfilter->ip.v6.src_ip6));
3904 break;
3905 default:
3906 /* TC filter can be configured based on different combinations
3907 * and in this case IP is not a part of filter config
3908 */
3909 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3910 vf->vf_id);
3911 }
3912
3913 /* get the VSI to which the TC belongs to */
3914 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3915 cfilter->seid = vsi->seid;
3916 cfilter->flags = vcf->field_flags;
3917
3918 /* Adding cloud filter programmed as TC filter */
3919 if (tcf.dst_port)
3920 ret = i40e_add_del_cloud_filter_big_buf(vsi, filter: cfilter, add: true);
3921 else
3922 ret = i40e_add_del_cloud_filter(vsi, filter: cfilter, add: true);
3923 if (ret) {
3924 dev_err(&pf->pdev->dev,
3925 "VF %d: Failed to add cloud filter, err %pe aq_err %s\n",
3926 vf->vf_id, ERR_PTR(ret),
3927 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3928 goto err_free;
3929 }
3930
3931 INIT_HLIST_NODE(h: &cfilter->cloud_node);
3932 hlist_add_head(n: &cfilter->cloud_node, h: &vf->cloud_filter_list);
3933 /* release the pointer passing it to the collection */
3934 cfilter = NULL;
3935 vf->num_cloud_filters++;
3936err_free:
3937 kfree(objp: cfilter);
3938err_out:
3939 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_ADD_CLOUD_FILTER,
3940 retval: aq_ret);
3941}
3942
3943/**
3944 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
3945 * @vf: pointer to the VF info
3946 * @msg: pointer to the msg buffer
3947 **/
3948static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
3949{
3950 struct virtchnl_tc_info *tci =
3951 (struct virtchnl_tc_info *)msg;
3952 struct i40e_pf *pf = vf->pf;
3953 struct i40e_link_status *ls = &pf->hw.phy.link_info;
3954 int i, adq_request_qps = 0;
3955 int aq_ret = 0;
3956 u64 speed = 0;
3957
3958 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
3959 aq_ret = -EINVAL;
3960 goto err;
3961 }
3962
3963 /* ADq cannot be applied if spoof check is ON */
3964 if (vf->spoofchk) {
3965 dev_err(&pf->pdev->dev,
3966 "Spoof check is ON, turn it OFF to enable ADq\n");
3967 aq_ret = -EINVAL;
3968 goto err;
3969 }
3970
3971 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
3972 dev_err(&pf->pdev->dev,
3973 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
3974 vf->vf_id);
3975 aq_ret = -EINVAL;
3976 goto err;
3977 }
3978
3979 /* max number of traffic classes for VF currently capped at 4 */
3980 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
3981 dev_err(&pf->pdev->dev,
3982 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
3983 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
3984 aq_ret = -EINVAL;
3985 goto err;
3986 }
3987
3988 /* validate queues for each TC */
3989 for (i = 0; i < tci->num_tc; i++)
3990 if (!tci->list[i].count ||
3991 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
3992 dev_err(&pf->pdev->dev,
3993 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
3994 vf->vf_id, i, tci->list[i].count,
3995 I40E_DEFAULT_QUEUES_PER_VF);
3996 aq_ret = -EINVAL;
3997 goto err;
3998 }
3999
4000 /* need Max VF queues but already have default number of queues */
4001 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
4002
4003 if (pf->queues_left < adq_request_qps) {
4004 dev_err(&pf->pdev->dev,
4005 "No queues left to allocate to VF %d\n",
4006 vf->vf_id);
4007 aq_ret = -EINVAL;
4008 goto err;
4009 } else {
4010 /* we need to allocate max VF queues to enable ADq so as to
4011 * make sure ADq enabled VF always gets back queues when it
4012 * goes through a reset.
4013 */
4014 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
4015 }
4016
4017 /* get link speed in MB to validate rate limit */
4018 speed = i40e_vc_link_speed2mbps(link_speed: ls->link_speed);
4019 if (speed == SPEED_UNKNOWN) {
4020 dev_err(&pf->pdev->dev,
4021 "Cannot detect link speed\n");
4022 aq_ret = -EINVAL;
4023 goto err;
4024 }
4025
4026 /* parse data from the queue channel info */
4027 vf->num_tc = tci->num_tc;
4028 for (i = 0; i < vf->num_tc; i++) {
4029 if (tci->list[i].max_tx_rate) {
4030 if (tci->list[i].max_tx_rate > speed) {
4031 dev_err(&pf->pdev->dev,
4032 "Invalid max tx rate %llu specified for VF %d.",
4033 tci->list[i].max_tx_rate,
4034 vf->vf_id);
4035 aq_ret = -EINVAL;
4036 goto err;
4037 } else {
4038 vf->ch[i].max_tx_rate =
4039 tci->list[i].max_tx_rate;
4040 }
4041 }
4042 vf->ch[i].num_qps = tci->list[i].count;
4043 }
4044
4045 /* set this flag only after making sure all inputs are sane */
4046 vf->adq_enabled = true;
4047
4048 /* reset the VF in order to allocate resources */
4049 i40e_vc_reset_vf(vf, notify_vf: true);
4050
4051 return 0;
4052
4053 /* send the response to the VF */
4054err:
4055 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_ENABLE_CHANNELS,
4056 retval: aq_ret);
4057}
4058
4059/**
4060 * i40e_vc_del_qch_msg
4061 * @vf: pointer to the VF info
4062 * @msg: pointer to the msg buffer
4063 **/
4064static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
4065{
4066 struct i40e_pf *pf = vf->pf;
4067 int aq_ret = 0;
4068
4069 if (!i40e_sync_vf_state(vf, state: I40E_VF_STATE_ACTIVE)) {
4070 aq_ret = -EINVAL;
4071 goto err;
4072 }
4073
4074 if (vf->adq_enabled) {
4075 i40e_del_all_cloud_filters(vf);
4076 i40e_del_qch(vf);
4077 vf->adq_enabled = false;
4078 vf->num_tc = 0;
4079 dev_info(&pf->pdev->dev,
4080 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
4081 vf->vf_id);
4082 } else {
4083 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
4084 vf->vf_id);
4085 aq_ret = -EINVAL;
4086 }
4087
4088 /* reset the VF in order to allocate resources */
4089 i40e_vc_reset_vf(vf, notify_vf: true);
4090
4091 return 0;
4092
4093err:
4094 return i40e_vc_send_resp_to_vf(vf, opcode: VIRTCHNL_OP_DISABLE_CHANNELS,
4095 retval: aq_ret);
4096}
4097
4098/**
4099 * i40e_vc_process_vf_msg
4100 * @pf: pointer to the PF structure
4101 * @vf_id: source VF id
4102 * @v_opcode: operation code
4103 * @v_retval: unused return value code
4104 * @msg: pointer to the msg buffer
4105 * @msglen: msg length
4106 *
4107 * called from the common aeq/arq handler to
4108 * process request from VF
4109 **/
4110int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4111 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4112{
4113 struct i40e_hw *hw = &pf->hw;
4114 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4115 struct i40e_vf *vf;
4116 int ret;
4117
4118 pf->vf_aq_requests++;
4119 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4120 return -EINVAL;
4121 vf = &(pf->vf[local_vf_id]);
4122
4123 /* Check if VF is disabled. */
4124 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4125 return -EINVAL;
4126
4127 /* perform basic checks on the msg */
4128 ret = virtchnl_vc_validate_vf_msg(ver: &vf->vf_ver, v_opcode, msg, msglen);
4129
4130 if (ret) {
4131 i40e_vc_send_resp_to_vf(vf, opcode: v_opcode, retval: -EINVAL);
4132 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4133 local_vf_id, v_opcode, msglen);
4134 return ret;
4135 }
4136
4137 switch (v_opcode) {
4138 case VIRTCHNL_OP_VERSION:
4139 ret = i40e_vc_get_version_msg(vf, msg);
4140 break;
4141 case VIRTCHNL_OP_GET_VF_RESOURCES:
4142 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4143 i40e_vc_notify_vf_link_state(vf);
4144 break;
4145 case VIRTCHNL_OP_RESET_VF:
4146 i40e_vc_reset_vf(vf, notify_vf: false);
4147 ret = 0;
4148 break;
4149 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4150 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4151 break;
4152 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4153 ret = i40e_vc_config_queues_msg(vf, msg);
4154 break;
4155 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4156 ret = i40e_vc_config_irq_map_msg(vf, msg);
4157 break;
4158 case VIRTCHNL_OP_ENABLE_QUEUES:
4159 ret = i40e_vc_enable_queues_msg(vf, msg);
4160 i40e_vc_notify_vf_link_state(vf);
4161 break;
4162 case VIRTCHNL_OP_DISABLE_QUEUES:
4163 ret = i40e_vc_disable_queues_msg(vf, msg);
4164 break;
4165 case VIRTCHNL_OP_ADD_ETH_ADDR:
4166 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4167 break;
4168 case VIRTCHNL_OP_DEL_ETH_ADDR:
4169 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4170 break;
4171 case VIRTCHNL_OP_ADD_VLAN:
4172 ret = i40e_vc_add_vlan_msg(vf, msg);
4173 break;
4174 case VIRTCHNL_OP_DEL_VLAN:
4175 ret = i40e_vc_remove_vlan_msg(vf, msg);
4176 break;
4177 case VIRTCHNL_OP_GET_STATS:
4178 ret = i40e_vc_get_stats_msg(vf, msg);
4179 break;
4180 case VIRTCHNL_OP_RDMA:
4181 ret = i40e_vc_rdma_msg(vf, msg, msglen);
4182 break;
4183 case VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP:
4184 ret = i40e_vc_rdma_qvmap_msg(vf, msg, config: true);
4185 break;
4186 case VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP:
4187 ret = i40e_vc_rdma_qvmap_msg(vf, msg, config: false);
4188 break;
4189 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4190 ret = i40e_vc_config_rss_key(vf, msg);
4191 break;
4192 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4193 ret = i40e_vc_config_rss_lut(vf, msg);
4194 break;
4195 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4196 ret = i40e_vc_get_rss_hena(vf, msg);
4197 break;
4198 case VIRTCHNL_OP_SET_RSS_HENA:
4199 ret = i40e_vc_set_rss_hena(vf, msg);
4200 break;
4201 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4202 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4203 break;
4204 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4205 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4206 break;
4207 case VIRTCHNL_OP_REQUEST_QUEUES:
4208 ret = i40e_vc_request_queues_msg(vf, msg);
4209 break;
4210 case VIRTCHNL_OP_ENABLE_CHANNELS:
4211 ret = i40e_vc_add_qch_msg(vf, msg);
4212 break;
4213 case VIRTCHNL_OP_DISABLE_CHANNELS:
4214 ret = i40e_vc_del_qch_msg(vf, msg);
4215 break;
4216 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4217 ret = i40e_vc_add_cloud_filter(vf, msg);
4218 break;
4219 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4220 ret = i40e_vc_del_cloud_filter(vf, msg);
4221 break;
4222 case VIRTCHNL_OP_UNKNOWN:
4223 default:
4224 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4225 v_opcode, local_vf_id);
4226 ret = i40e_vc_send_resp_to_vf(vf, opcode: v_opcode,
4227 retval: -EOPNOTSUPP);
4228 break;
4229 }
4230
4231 return ret;
4232}
4233
4234/**
4235 * i40e_vc_process_vflr_event
4236 * @pf: pointer to the PF structure
4237 *
4238 * called from the vlfr irq handler to
4239 * free up VF resources and state variables
4240 **/
4241int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4242{
4243 struct i40e_hw *hw = &pf->hw;
4244 u32 reg, reg_idx, bit_idx;
4245 struct i40e_vf *vf;
4246 int vf_id;
4247
4248 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4249 return 0;
4250
4251 /* Re-enable the VFLR interrupt cause here, before looking for which
4252 * VF got reset. Otherwise, if another VF gets a reset while the
4253 * first one is being processed, that interrupt will be lost, and
4254 * that VF will be stuck in reset forever.
4255 */
4256 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4257 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4258 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4259 i40e_flush(hw);
4260
4261 clear_bit(nr: __I40E_VFLR_EVENT_PENDING, addr: pf->state);
4262 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4263 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4264 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4265 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4266 vf = &pf->vf[vf_id];
4267 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4268 if (reg & BIT(bit_idx))
4269 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4270 i40e_reset_vf(vf, flr: true);
4271 }
4272
4273 return 0;
4274}
4275
4276/**
4277 * i40e_validate_vf
4278 * @pf: the physical function
4279 * @vf_id: VF identifier
4280 *
4281 * Check that the VF is enabled and the VSI exists.
4282 *
4283 * Returns 0 on success, negative on failure
4284 **/
4285static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4286{
4287 struct i40e_vsi *vsi;
4288 struct i40e_vf *vf;
4289 int ret = 0;
4290
4291 if (vf_id >= pf->num_alloc_vfs) {
4292 dev_err(&pf->pdev->dev,
4293 "Invalid VF Identifier %d\n", vf_id);
4294 ret = -EINVAL;
4295 goto err_out;
4296 }
4297 vf = &pf->vf[vf_id];
4298 vsi = i40e_find_vsi_from_id(pf, id: vf->lan_vsi_id);
4299 if (!vsi)
4300 ret = -EINVAL;
4301err_out:
4302 return ret;
4303}
4304
4305/**
4306 * i40e_check_vf_init_timeout
4307 * @vf: the virtual function
4308 *
4309 * Check that the VF's initialization was successfully done and if not
4310 * wait up to 300ms for its finish.
4311 *
4312 * Returns true when VF is initialized, false on timeout
4313 **/
4314static bool i40e_check_vf_init_timeout(struct i40e_vf *vf)
4315{
4316 int i;
4317
4318 /* When the VF is resetting wait until it is done.
4319 * It can take up to 200 milliseconds, but wait for
4320 * up to 300 milliseconds to be safe.
4321 */
4322 for (i = 0; i < 15; i++) {
4323 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4324 return true;
4325 msleep(msecs: 20);
4326 }
4327
4328 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4329 dev_err(&vf->pf->pdev->dev,
4330 "VF %d still in reset. Try again.\n", vf->vf_id);
4331 return false;
4332 }
4333
4334 return true;
4335}
4336
4337/**
4338 * i40e_ndo_set_vf_mac
4339 * @netdev: network interface device structure
4340 * @vf_id: VF identifier
4341 * @mac: mac address
4342 *
4343 * program VF mac address
4344 **/
4345int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4346{
4347 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
4348 struct i40e_vsi *vsi = np->vsi;
4349 struct i40e_pf *pf = vsi->back;
4350 struct i40e_mac_filter *f;
4351 struct i40e_vf *vf;
4352 int ret = 0;
4353 struct hlist_node *h;
4354 int bkt;
4355
4356 if (test_and_set_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state)) {
4357 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4358 return -EAGAIN;
4359 }
4360
4361 /* validate the request */
4362 ret = i40e_validate_vf(pf, vf_id);
4363 if (ret)
4364 goto error_param;
4365
4366 vf = &pf->vf[vf_id];
4367 if (!i40e_check_vf_init_timeout(vf)) {
4368 ret = -EAGAIN;
4369 goto error_param;
4370 }
4371 vsi = pf->vsi[vf->lan_vsi_idx];
4372
4373 if (is_multicast_ether_addr(addr: mac)) {
4374 dev_err(&pf->pdev->dev,
4375 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4376 ret = -EINVAL;
4377 goto error_param;
4378 }
4379
4380 /* Lock once because below invoked function add/del_filter requires
4381 * mac_filter_hash_lock to be held
4382 */
4383 spin_lock_bh(lock: &vsi->mac_filter_hash_lock);
4384
4385 /* delete the temporary mac address */
4386 if (!is_zero_ether_addr(addr: vf->default_lan_addr.addr))
4387 i40e_del_mac_filter(vsi, macaddr: vf->default_lan_addr.addr);
4388
4389 /* Delete all the filters for this VSI - we're going to kill it
4390 * anyway.
4391 */
4392 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4393 __i40e_del_filter(vsi, f);
4394
4395 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
4396
4397 /* program mac filter */
4398 if (i40e_sync_vsi_filters(vsi)) {
4399 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4400 ret = -EIO;
4401 goto error_param;
4402 }
4403 ether_addr_copy(dst: vf->default_lan_addr.addr, src: mac);
4404
4405 if (is_zero_ether_addr(addr: mac)) {
4406 vf->pf_set_mac = false;
4407 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4408 } else {
4409 vf->pf_set_mac = true;
4410 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4411 mac, vf_id);
4412 }
4413
4414 /* Force the VF interface down so it has to bring up with new MAC
4415 * address
4416 */
4417 i40e_vc_reset_vf(vf, notify_vf: true);
4418 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4419
4420error_param:
4421 clear_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state);
4422 return ret;
4423}
4424
4425/**
4426 * i40e_ndo_set_vf_port_vlan
4427 * @netdev: network interface device structure
4428 * @vf_id: VF identifier
4429 * @vlan_id: mac address
4430 * @qos: priority setting
4431 * @vlan_proto: vlan protocol
4432 *
4433 * program VF vlan id and/or qos
4434 **/
4435int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4436 u16 vlan_id, u8 qos, __be16 vlan_proto)
4437{
4438 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4439 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
4440 bool allmulti = false, alluni = false;
4441 struct i40e_pf *pf = np->vsi->back;
4442 struct i40e_vsi *vsi;
4443 struct i40e_vf *vf;
4444 int ret = 0;
4445
4446 if (test_and_set_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state)) {
4447 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4448 return -EAGAIN;
4449 }
4450
4451 /* validate the request */
4452 ret = i40e_validate_vf(pf, vf_id);
4453 if (ret)
4454 goto error_pvid;
4455
4456 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4457 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4458 ret = -EINVAL;
4459 goto error_pvid;
4460 }
4461
4462 if (vlan_proto != htons(ETH_P_8021Q)) {
4463 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4464 ret = -EPROTONOSUPPORT;
4465 goto error_pvid;
4466 }
4467
4468 vf = &pf->vf[vf_id];
4469 if (!i40e_check_vf_init_timeout(vf)) {
4470 ret = -EAGAIN;
4471 goto error_pvid;
4472 }
4473 vsi = pf->vsi[vf->lan_vsi_idx];
4474
4475 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4476 /* duplicate request, so just return success */
4477 goto error_pvid;
4478
4479 i40e_vlan_stripping_enable(vsi);
4480
4481 /* Locked once because multiple functions below iterate list */
4482 spin_lock_bh(lock: &vsi->mac_filter_hash_lock);
4483
4484 /* Check for condition where there was already a port VLAN ID
4485 * filter set and now it is being deleted by setting it to zero.
4486 * Additionally check for the condition where there was a port
4487 * VLAN but now there is a new and different port VLAN being set.
4488 * Before deleting all the old VLAN filters we must add new ones
4489 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4490 * MAC addresses deleted.
4491 */
4492 if ((!(vlan_id || qos) ||
4493 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4494 vsi->info.pvid) {
4495 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4496 if (ret) {
4497 dev_info(&vsi->back->pdev->dev,
4498 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4499 vsi->back->hw.aq.asq_last_status);
4500 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
4501 goto error_pvid;
4502 }
4503 }
4504
4505 if (vsi->info.pvid) {
4506 /* remove all filters on the old VLAN */
4507 i40e_rm_vlan_all_mac(vsi, vid: (le16_to_cpu(vsi->info.pvid) &
4508 VLAN_VID_MASK));
4509 }
4510
4511 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
4512
4513 /* disable promisc modes in case they were enabled */
4514 ret = i40e_config_vf_promiscuous_mode(vf, vsi_id: vf->lan_vsi_id,
4515 allmulti, alluni);
4516 if (ret) {
4517 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4518 goto error_pvid;
4519 }
4520
4521 if (vlan_id || qos)
4522 ret = i40e_vsi_add_pvid(vsi, vid: vlanprio);
4523 else
4524 i40e_vsi_remove_pvid(vsi);
4525 spin_lock_bh(lock: &vsi->mac_filter_hash_lock);
4526
4527 if (vlan_id) {
4528 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4529 vlan_id, qos, vf_id);
4530
4531 /* add new VLAN filter for each MAC */
4532 ret = i40e_add_vlan_all_mac(vsi, vid: vlan_id);
4533 if (ret) {
4534 dev_info(&vsi->back->pdev->dev,
4535 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4536 vsi->back->hw.aq.asq_last_status);
4537 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
4538 goto error_pvid;
4539 }
4540
4541 /* remove the previously added non-VLAN MAC filters */
4542 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4543 }
4544
4545 spin_unlock_bh(lock: &vsi->mac_filter_hash_lock);
4546
4547 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4548 alluni = true;
4549
4550 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4551 allmulti = true;
4552
4553 /* Schedule the worker thread to take care of applying changes */
4554 i40e_service_event_schedule(pf: vsi->back);
4555
4556 if (ret) {
4557 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4558 goto error_pvid;
4559 }
4560
4561 /* The Port VLAN needs to be saved across resets the same as the
4562 * default LAN MAC address.
4563 */
4564 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4565
4566 i40e_vc_reset_vf(vf, notify_vf: true);
4567 /* During reset the VF got a new VSI, so refresh a pointer. */
4568 vsi = pf->vsi[vf->lan_vsi_idx];
4569
4570 ret = i40e_config_vf_promiscuous_mode(vf, vsi_id: vsi->id, allmulti, alluni);
4571 if (ret) {
4572 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4573 goto error_pvid;
4574 }
4575
4576 ret = 0;
4577
4578error_pvid:
4579 clear_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state);
4580 return ret;
4581}
4582
4583/**
4584 * i40e_ndo_set_vf_bw
4585 * @netdev: network interface device structure
4586 * @vf_id: VF identifier
4587 * @min_tx_rate: Minimum Tx rate
4588 * @max_tx_rate: Maximum Tx rate
4589 *
4590 * configure VF Tx rate
4591 **/
4592int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4593 int max_tx_rate)
4594{
4595 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
4596 struct i40e_pf *pf = np->vsi->back;
4597 struct i40e_vsi *vsi;
4598 struct i40e_vf *vf;
4599 int ret = 0;
4600
4601 if (test_and_set_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state)) {
4602 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4603 return -EAGAIN;
4604 }
4605
4606 /* validate the request */
4607 ret = i40e_validate_vf(pf, vf_id);
4608 if (ret)
4609 goto error;
4610
4611 if (min_tx_rate) {
4612 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4613 min_tx_rate, vf_id);
4614 ret = -EINVAL;
4615 goto error;
4616 }
4617
4618 vf = &pf->vf[vf_id];
4619 if (!i40e_check_vf_init_timeout(vf)) {
4620 ret = -EAGAIN;
4621 goto error;
4622 }
4623 vsi = pf->vsi[vf->lan_vsi_idx];
4624
4625 ret = i40e_set_bw_limit(vsi, seid: vsi->seid, max_tx_rate);
4626 if (ret)
4627 goto error;
4628
4629 vf->tx_rate = max_tx_rate;
4630error:
4631 clear_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state);
4632 return ret;
4633}
4634
4635/**
4636 * i40e_ndo_get_vf_config
4637 * @netdev: network interface device structure
4638 * @vf_id: VF identifier
4639 * @ivi: VF configuration structure
4640 *
4641 * return VF configuration
4642 **/
4643int i40e_ndo_get_vf_config(struct net_device *netdev,
4644 int vf_id, struct ifla_vf_info *ivi)
4645{
4646 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
4647 struct i40e_vsi *vsi = np->vsi;
4648 struct i40e_pf *pf = vsi->back;
4649 struct i40e_vf *vf;
4650 int ret = 0;
4651
4652 if (test_and_set_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state)) {
4653 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4654 return -EAGAIN;
4655 }
4656
4657 /* validate the request */
4658 ret = i40e_validate_vf(pf, vf_id);
4659 if (ret)
4660 goto error_param;
4661
4662 vf = &pf->vf[vf_id];
4663 /* first vsi is always the LAN vsi */
4664 vsi = pf->vsi[vf->lan_vsi_idx];
4665 if (!vsi) {
4666 ret = -ENOENT;
4667 goto error_param;
4668 }
4669
4670 ivi->vf = vf_id;
4671
4672 ether_addr_copy(dst: ivi->mac, src: vf->default_lan_addr.addr);
4673
4674 ivi->max_tx_rate = vf->tx_rate;
4675 ivi->min_tx_rate = 0;
4676 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
4677 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
4678 I40E_VLAN_PRIORITY_SHIFT;
4679 if (vf->link_forced == false)
4680 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4681 else if (vf->link_up == true)
4682 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4683 else
4684 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4685 ivi->spoofchk = vf->spoofchk;
4686 ivi->trusted = vf->trusted;
4687 ret = 0;
4688
4689error_param:
4690 clear_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state);
4691 return ret;
4692}
4693
4694/**
4695 * i40e_ndo_set_vf_link_state
4696 * @netdev: network interface device structure
4697 * @vf_id: VF identifier
4698 * @link: required link state
4699 *
4700 * Set the link state of a specified VF, regardless of physical link state
4701 **/
4702int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4703{
4704 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
4705 struct i40e_pf *pf = np->vsi->back;
4706 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4707 struct virtchnl_pf_event pfe;
4708 struct i40e_hw *hw = &pf->hw;
4709 struct i40e_vf *vf;
4710 int abs_vf_id;
4711 int ret = 0;
4712
4713 if (test_and_set_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: 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 if (vf_id >= pf->num_alloc_vfs) {
4720 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4721 ret = -EINVAL;
4722 goto error_out;
4723 }
4724
4725 vf = &pf->vf[vf_id];
4726 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4727
4728 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4729 pfe.severity = PF_EVENT_SEVERITY_INFO;
4730
4731 switch (link) {
4732 case IFLA_VF_LINK_STATE_AUTO:
4733 vf->link_forced = false;
4734 i40e_set_vf_link_state(vf, pfe: &pfe, ls);
4735 break;
4736 case IFLA_VF_LINK_STATE_ENABLE:
4737 vf->link_forced = true;
4738 vf->link_up = true;
4739 i40e_set_vf_link_state(vf, pfe: &pfe, ls);
4740 break;
4741 case IFLA_VF_LINK_STATE_DISABLE:
4742 vf->link_forced = true;
4743 vf->link_up = false;
4744 i40e_set_vf_link_state(vf, pfe: &pfe, ls);
4745 break;
4746 default:
4747 ret = -EINVAL;
4748 goto error_out;
4749 }
4750 /* Notify the VF of its new link state */
4751 i40e_aq_send_msg_to_vf(hw, vfid: abs_vf_id, v_opcode: VIRTCHNL_OP_EVENT,
4752 v_retval: 0, msg: (u8 *)&pfe, msglen: sizeof(pfe), NULL);
4753
4754error_out:
4755 clear_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state);
4756 return ret;
4757}
4758
4759/**
4760 * i40e_ndo_set_vf_spoofchk
4761 * @netdev: network interface device structure
4762 * @vf_id: VF identifier
4763 * @enable: flag to enable or disable feature
4764 *
4765 * Enable or disable VF spoof checking
4766 **/
4767int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4768{
4769 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
4770 struct i40e_vsi *vsi = np->vsi;
4771 struct i40e_pf *pf = vsi->back;
4772 struct i40e_vsi_context ctxt;
4773 struct i40e_hw *hw = &pf->hw;
4774 struct i40e_vf *vf;
4775 int ret = 0;
4776
4777 if (test_and_set_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state)) {
4778 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4779 return -EAGAIN;
4780 }
4781
4782 /* validate the request */
4783 if (vf_id >= pf->num_alloc_vfs) {
4784 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4785 ret = -EINVAL;
4786 goto out;
4787 }
4788
4789 vf = &(pf->vf[vf_id]);
4790 if (!i40e_check_vf_init_timeout(vf)) {
4791 ret = -EAGAIN;
4792 goto out;
4793 }
4794
4795 if (enable == vf->spoofchk)
4796 goto out;
4797
4798 vf->spoofchk = enable;
4799 memset(&ctxt, 0, sizeof(ctxt));
4800 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4801 ctxt.pf_num = pf->hw.pf_id;
4802 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4803 if (enable)
4804 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4805 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4806 ret = i40e_aq_update_vsi_params(hw, vsi_ctx: &ctxt, NULL);
4807 if (ret) {
4808 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4809 ret);
4810 ret = -EIO;
4811 }
4812out:
4813 clear_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state);
4814 return ret;
4815}
4816
4817/**
4818 * i40e_ndo_set_vf_trust
4819 * @netdev: network interface device structure of the pf
4820 * @vf_id: VF identifier
4821 * @setting: trust setting
4822 *
4823 * Enable or disable VF trust setting
4824 **/
4825int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4826{
4827 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
4828 struct i40e_pf *pf = np->vsi->back;
4829 struct i40e_vf *vf;
4830 int ret = 0;
4831
4832 if (test_and_set_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state)) {
4833 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4834 return -EAGAIN;
4835 }
4836
4837 /* validate the request */
4838 if (vf_id >= pf->num_alloc_vfs) {
4839 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4840 ret = -EINVAL;
4841 goto out;
4842 }
4843
4844 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4845 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4846 ret = -EINVAL;
4847 goto out;
4848 }
4849
4850 vf = &pf->vf[vf_id];
4851
4852 if (setting == vf->trusted)
4853 goto out;
4854
4855 vf->trusted = setting;
4856
4857 /* request PF to sync mac/vlan filters for the VF */
4858 set_bit(nr: __I40E_MACVLAN_SYNC_PENDING, addr: pf->state);
4859 pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
4860
4861 i40e_vc_reset_vf(vf, notify_vf: true);
4862 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4863 vf_id, setting ? "" : "un");
4864
4865 if (vf->adq_enabled) {
4866 if (!vf->trusted) {
4867 dev_info(&pf->pdev->dev,
4868 "VF %u no longer Trusted, deleting all cloud filters\n",
4869 vf_id);
4870 i40e_del_all_cloud_filters(vf);
4871 }
4872 }
4873
4874out:
4875 clear_bit(nr: __I40E_VIRTCHNL_OP_PENDING, addr: pf->state);
4876 return ret;
4877}
4878
4879/**
4880 * i40e_get_vf_stats - populate some stats for the VF
4881 * @netdev: the netdev of the PF
4882 * @vf_id: the host OS identifier (0-127)
4883 * @vf_stats: pointer to the OS memory to be initialized
4884 */
4885int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4886 struct ifla_vf_stats *vf_stats)
4887{
4888 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
4889 struct i40e_pf *pf = np->vsi->back;
4890 struct i40e_eth_stats *stats;
4891 struct i40e_vsi *vsi;
4892 struct i40e_vf *vf;
4893
4894 /* validate the request */
4895 if (i40e_validate_vf(pf, vf_id))
4896 return -EINVAL;
4897
4898 vf = &pf->vf[vf_id];
4899 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4900 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4901 return -EBUSY;
4902 }
4903
4904 vsi = pf->vsi[vf->lan_vsi_idx];
4905 if (!vsi)
4906 return -EINVAL;
4907
4908 i40e_update_eth_stats(vsi);
4909 stats = &vsi->eth_stats;
4910
4911 memset(vf_stats, 0, sizeof(*vf_stats));
4912
4913 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4914 stats->rx_multicast;
4915 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
4916 stats->tx_multicast;
4917 vf_stats->rx_bytes = stats->rx_bytes;
4918 vf_stats->tx_bytes = stats->tx_bytes;
4919 vf_stats->broadcast = stats->rx_broadcast;
4920 vf_stats->multicast = stats->rx_multicast;
4921 vf_stats->rx_dropped = stats->rx_discards + stats->rx_discards_other;
4922 vf_stats->tx_dropped = stats->tx_discards;
4923
4924 return 0;
4925}
4926

source code of linux/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c