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