1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4 #include "i40e.h"
5 #include "i40e_lan_hmc.h"
6 #include "i40e_virtchnl_pf.h"
7
8 /*********************notification routines***********************/
9
10 /**
11 * i40e_vc_vf_broadcast
12 * @pf: pointer to the PF structure
13 * @v_opcode: operation code
14 * @v_retval: return value
15 * @msg: pointer to the msg buffer
16 * @msglen: msg length
17 *
18 * send a message to all VFs on a given PF
19 **/
i40e_vc_vf_broadcast(struct i40e_pf * pf,enum virtchnl_ops v_opcode,int v_retval,u8 * msg,u16 msglen)20 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
21 enum virtchnl_ops v_opcode,
22 int v_retval, u8 *msg,
23 u16 msglen)
24 {
25 struct i40e_hw *hw = &pf->hw;
26 struct i40e_vf *vf = pf->vf;
27 int i;
28
29 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
30 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
31 /* Not all vfs are enabled so skip the ones that are not */
32 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
33 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
34 continue;
35
36 /* Ignore return value on purpose - a given VF may fail, but
37 * we need to keep going and send to all of them
38 */
39 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
40 msg, msglen, NULL);
41 }
42 }
43
44 /**
45 * i40e_vc_link_speed2mbps
46 * converts i40e_aq_link_speed to integer value of Mbps
47 * @link_speed: the speed to convert
48 *
49 * return the speed as direct value of Mbps.
50 **/
51 static u32
i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)52 i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)
53 {
54 switch (link_speed) {
55 case I40E_LINK_SPEED_100MB:
56 return SPEED_100;
57 case I40E_LINK_SPEED_1GB:
58 return SPEED_1000;
59 case I40E_LINK_SPEED_2_5GB:
60 return SPEED_2500;
61 case I40E_LINK_SPEED_5GB:
62 return SPEED_5000;
63 case I40E_LINK_SPEED_10GB:
64 return SPEED_10000;
65 case I40E_LINK_SPEED_20GB:
66 return SPEED_20000;
67 case I40E_LINK_SPEED_25GB:
68 return SPEED_25000;
69 case I40E_LINK_SPEED_40GB:
70 return SPEED_40000;
71 case I40E_LINK_SPEED_UNKNOWN:
72 return SPEED_UNKNOWN;
73 }
74 return SPEED_UNKNOWN;
75 }
76
77 /**
78 * i40e_set_vf_link_state
79 * @vf: pointer to the VF structure
80 * @pfe: pointer to PF event structure
81 * @ls: pointer to link status structure
82 *
83 * set a link state on a single vf
84 **/
i40e_set_vf_link_state(struct i40e_vf * vf,struct virtchnl_pf_event * pfe,struct i40e_link_status * ls)85 static void i40e_set_vf_link_state(struct i40e_vf *vf,
86 struct virtchnl_pf_event *pfe, struct i40e_link_status *ls)
87 {
88 u8 link_status = ls->link_info & I40E_AQ_LINK_UP;
89
90 if (vf->link_forced)
91 link_status = vf->link_up;
92
93 if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
94 pfe->event_data.link_event_adv.link_speed = link_status ?
95 i40e_vc_link_speed2mbps(ls->link_speed) : 0;
96 pfe->event_data.link_event_adv.link_status = link_status;
97 } else {
98 pfe->event_data.link_event.link_speed = link_status ?
99 i40e_virtchnl_link_speed(ls->link_speed) : 0;
100 pfe->event_data.link_event.link_status = link_status;
101 }
102 }
103
104 /**
105 * i40e_vc_notify_vf_link_state
106 * @vf: pointer to the VF structure
107 *
108 * send a link status message to a single VF
109 **/
i40e_vc_notify_vf_link_state(struct i40e_vf * vf)110 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
111 {
112 struct virtchnl_pf_event pfe;
113 struct i40e_pf *pf = vf->pf;
114 struct i40e_hw *hw = &pf->hw;
115 struct i40e_link_status *ls = &pf->hw.phy.link_info;
116 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
117
118 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
119 pfe.severity = PF_EVENT_SEVERITY_INFO;
120
121 i40e_set_vf_link_state(vf, &pfe, ls);
122
123 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
124 0, (u8 *)&pfe, sizeof(pfe), NULL);
125 }
126
127 /**
128 * i40e_vc_notify_link_state
129 * @pf: pointer to the PF structure
130 *
131 * send a link status message to all VFs on a given PF
132 **/
i40e_vc_notify_link_state(struct i40e_pf * pf)133 void i40e_vc_notify_link_state(struct i40e_pf *pf)
134 {
135 int i;
136
137 for (i = 0; i < pf->num_alloc_vfs; i++)
138 i40e_vc_notify_vf_link_state(&pf->vf[i]);
139 }
140
141 /**
142 * i40e_vc_notify_reset
143 * @pf: pointer to the PF structure
144 *
145 * indicate a pending reset to all VFs on a given PF
146 **/
i40e_vc_notify_reset(struct i40e_pf * pf)147 void i40e_vc_notify_reset(struct i40e_pf *pf)
148 {
149 struct virtchnl_pf_event pfe;
150
151 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
152 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
153 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
154 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
155 }
156
157 #ifdef CONFIG_PCI_IOV
i40e_restore_all_vfs_msi_state(struct pci_dev * pdev)158 void i40e_restore_all_vfs_msi_state(struct pci_dev *pdev)
159 {
160 u16 vf_id;
161 u16 pos;
162
163 /* Continue only if this is a PF */
164 if (!pdev->is_physfn)
165 return;
166
167 if (!pci_num_vf(pdev))
168 return;
169
170 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
171 if (pos) {
172 struct pci_dev *vf_dev = NULL;
173
174 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
175 while ((vf_dev = pci_get_device(pdev->vendor, vf_id, vf_dev))) {
176 if (vf_dev->is_virtfn && vf_dev->physfn == pdev)
177 pci_restore_msi_state(vf_dev);
178 }
179 }
180 }
181 #endif /* CONFIG_PCI_IOV */
182
183 /**
184 * i40e_vc_notify_vf_reset
185 * @vf: pointer to the VF structure
186 *
187 * indicate a pending reset to the given VF
188 **/
i40e_vc_notify_vf_reset(struct i40e_vf * vf)189 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
190 {
191 struct virtchnl_pf_event pfe;
192 int abs_vf_id;
193
194 /* validate the request */
195 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
196 return;
197
198 /* verify if the VF is in either init or active before proceeding */
199 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
200 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
201 return;
202
203 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
204
205 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
206 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
207 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
208 0, (u8 *)&pfe,
209 sizeof(struct virtchnl_pf_event), NULL);
210 }
211 /***********************misc routines*****************************/
212
213 /**
214 * i40e_vc_reset_vf
215 * @vf: pointer to the VF info
216 * @notify_vf: notify vf about reset or not
217 * Reset VF handler.
218 **/
i40e_vc_reset_vf(struct i40e_vf * vf,bool notify_vf)219 void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
220 {
221 struct i40e_pf *pf = vf->pf;
222 int i;
223
224 if (notify_vf)
225 i40e_vc_notify_vf_reset(vf);
226
227 /* We want to ensure that an actual reset occurs initiated after this
228 * function was called. However, we do not want to wait forever, so
229 * we'll give a reasonable time and print a message if we failed to
230 * ensure a reset.
231 */
232 for (i = 0; i < 20; i++) {
233 /* If PF is in VFs releasing state reset VF is impossible,
234 * so leave it.
235 */
236 if (test_bit(__I40E_VFS_RELEASING, pf->state))
237 return;
238 if (i40e_reset_vf(vf, false))
239 return;
240 usleep_range(10000, 20000);
241 }
242
243 if (notify_vf)
244 dev_warn(&vf->pf->pdev->dev,
245 "Failed to initiate reset for VF %d after 200 milliseconds\n",
246 vf->vf_id);
247 else
248 dev_dbg(&vf->pf->pdev->dev,
249 "Failed to initiate reset for VF %d after 200 milliseconds\n",
250 vf->vf_id);
251 }
252
253 /**
254 * i40e_vc_isvalid_vsi_id
255 * @vf: pointer to the VF info
256 * @vsi_id: VF relative VSI id
257 *
258 * check for the valid VSI id
259 **/
i40e_vc_isvalid_vsi_id(struct i40e_vf * vf,u16 vsi_id)260 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
261 {
262 struct i40e_pf *pf = vf->pf;
263 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
264
265 return (vsi && (vsi->vf_id == vf->vf_id));
266 }
267
268 /**
269 * i40e_vc_isvalid_queue_id
270 * @vf: pointer to the VF info
271 * @vsi_id: vsi id
272 * @qid: vsi relative queue id
273 *
274 * check for the valid queue id
275 **/
i40e_vc_isvalid_queue_id(struct i40e_vf * vf,u16 vsi_id,u16 qid)276 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
277 u16 qid)
278 {
279 struct i40e_pf *pf = vf->pf;
280 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
281
282 return (vsi && (qid < vsi->alloc_queue_pairs));
283 }
284
285 /**
286 * i40e_vc_isvalid_vector_id
287 * @vf: pointer to the VF info
288 * @vector_id: VF relative vector id
289 *
290 * check for the valid vector id
291 **/
i40e_vc_isvalid_vector_id(struct i40e_vf * vf,u32 vector_id)292 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
293 {
294 struct i40e_pf *pf = vf->pf;
295
296 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
297 }
298
299 /***********************vf resource mgmt routines*****************/
300
301 /**
302 * i40e_vc_get_pf_queue_id
303 * @vf: pointer to the VF info
304 * @vsi_id: id of VSI as provided by the FW
305 * @vsi_queue_id: vsi relative queue id
306 *
307 * return PF relative queue id
308 **/
i40e_vc_get_pf_queue_id(struct i40e_vf * vf,u16 vsi_id,u8 vsi_queue_id)309 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
310 u8 vsi_queue_id)
311 {
312 struct i40e_pf *pf = vf->pf;
313 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
314 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
315
316 if (!vsi)
317 return pf_queue_id;
318
319 if (le16_to_cpu(vsi->info.mapping_flags) &
320 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
321 pf_queue_id =
322 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
323 else
324 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
325 vsi_queue_id;
326
327 return pf_queue_id;
328 }
329
330 /**
331 * i40e_get_real_pf_qid
332 * @vf: pointer to the VF info
333 * @vsi_id: vsi id
334 * @queue_id: queue number
335 *
336 * wrapper function to get pf_queue_id handling ADq code as well
337 **/
i40e_get_real_pf_qid(struct i40e_vf * vf,u16 vsi_id,u16 queue_id)338 static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
339 {
340 int i;
341
342 if (vf->adq_enabled) {
343 /* Although VF considers all the queues(can be 1 to 16) as its
344 * own but they may actually belong to different VSIs(up to 4).
345 * We need to find which queues belongs to which VSI.
346 */
347 for (i = 0; i < vf->num_tc; i++) {
348 if (queue_id < vf->ch[i].num_qps) {
349 vsi_id = vf->ch[i].vsi_id;
350 break;
351 }
352 /* find right queue id which is relative to a
353 * given VSI.
354 */
355 queue_id -= vf->ch[i].num_qps;
356 }
357 }
358
359 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
360 }
361
362 /**
363 * i40e_config_irq_link_list
364 * @vf: pointer to the VF info
365 * @vsi_id: id of VSI as given by the FW
366 * @vecmap: irq map info
367 *
368 * configure irq link list from the map
369 **/
i40e_config_irq_link_list(struct i40e_vf * vf,u16 vsi_id,struct virtchnl_vector_map * vecmap)370 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
371 struct virtchnl_vector_map *vecmap)
372 {
373 unsigned long linklistmap = 0, tempmap;
374 struct i40e_pf *pf = vf->pf;
375 struct i40e_hw *hw = &pf->hw;
376 u16 vsi_queue_id, pf_queue_id;
377 enum i40e_queue_type qtype;
378 u16 next_q, vector_id, size;
379 u32 reg, reg_idx;
380 u16 itr_idx = 0;
381
382 vector_id = vecmap->vector_id;
383 /* setup the head */
384 if (0 == vector_id)
385 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
386 else
387 reg_idx = I40E_VPINT_LNKLSTN(
388 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
389 (vector_id - 1));
390
391 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
392 /* Special case - No queues mapped on this vector */
393 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
394 goto irq_list_done;
395 }
396 tempmap = vecmap->rxq_map;
397 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
398 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
399 vsi_queue_id));
400 }
401
402 tempmap = vecmap->txq_map;
403 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
404 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
405 vsi_queue_id + 1));
406 }
407
408 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
409 next_q = find_first_bit(&linklistmap, size);
410 if (unlikely(next_q == size))
411 goto irq_list_done;
412
413 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
414 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
415 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
416 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
417
418 wr32(hw, reg_idx, reg);
419
420 while (next_q < size) {
421 switch (qtype) {
422 case I40E_QUEUE_TYPE_RX:
423 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
424 itr_idx = vecmap->rxitr_idx;
425 break;
426 case I40E_QUEUE_TYPE_TX:
427 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
428 itr_idx = vecmap->txitr_idx;
429 break;
430 default:
431 break;
432 }
433
434 next_q = find_next_bit(&linklistmap, size, next_q + 1);
435 if (next_q < size) {
436 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
437 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
438 pf_queue_id = i40e_get_real_pf_qid(vf,
439 vsi_id,
440 vsi_queue_id);
441 } else {
442 pf_queue_id = I40E_QUEUE_END_OF_LIST;
443 qtype = 0;
444 }
445
446 /* format for the RQCTL & TQCTL regs is same */
447 reg = (vector_id) |
448 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
449 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
450 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
451 FIELD_PREP(I40E_QINT_RQCTL_ITR_INDX_MASK, itr_idx);
452 wr32(hw, reg_idx, reg);
453 }
454
455 /* if the vf is running in polling mode and using interrupt zero,
456 * need to disable auto-mask on enabling zero interrupt for VFs.
457 */
458 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
459 (vector_id == 0)) {
460 reg = rd32(hw, I40E_GLINT_CTL);
461 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
462 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
463 wr32(hw, I40E_GLINT_CTL, reg);
464 }
465 }
466
467 irq_list_done:
468 i40e_flush(hw);
469 }
470
471 /**
472 * i40e_release_rdma_qvlist
473 * @vf: pointer to the VF.
474 *
475 **/
i40e_release_rdma_qvlist(struct i40e_vf * vf)476 static void i40e_release_rdma_qvlist(struct i40e_vf *vf)
477 {
478 struct i40e_pf *pf = vf->pf;
479 struct virtchnl_rdma_qvlist_info *qvlist_info = vf->qvlist_info;
480 u32 msix_vf;
481 u32 i;
482
483 if (!vf->qvlist_info)
484 return;
485
486 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
487 for (i = 0; i < qvlist_info->num_vectors; i++) {
488 struct virtchnl_rdma_qv_info *qv_info;
489 u32 next_q_index, next_q_type;
490 struct i40e_hw *hw = &pf->hw;
491 u32 v_idx, reg_idx, reg;
492
493 qv_info = &qvlist_info->qv_info[i];
494 v_idx = qv_info->v_idx;
495 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
496 /* Figure out the queue after CEQ and make that the
497 * first queue.
498 */
499 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
500 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
501 next_q_index = FIELD_GET(I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK,
502 reg);
503 next_q_type = FIELD_GET(I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK,
504 reg);
505
506 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
507 reg = (next_q_index &
508 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
509 (next_q_type <<
510 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
511
512 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
513 }
514 }
515 kfree(vf->qvlist_info);
516 vf->qvlist_info = NULL;
517 }
518
519 /**
520 * i40e_config_rdma_qvlist
521 * @vf: pointer to the VF info
522 * @qvlist_info: queue and vector list
523 *
524 * Return 0 on success or < 0 on error
525 **/
526 static int
i40e_config_rdma_qvlist(struct i40e_vf * vf,struct virtchnl_rdma_qvlist_info * qvlist_info)527 i40e_config_rdma_qvlist(struct i40e_vf *vf,
528 struct virtchnl_rdma_qvlist_info *qvlist_info)
529 {
530 struct i40e_pf *pf = vf->pf;
531 struct i40e_hw *hw = &pf->hw;
532 struct virtchnl_rdma_qv_info *qv_info;
533 u32 v_idx, i, reg_idx, reg;
534 u32 next_q_idx, next_q_type;
535 size_t size;
536 u32 msix_vf;
537 int ret = 0;
538
539 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
540
541 if (qvlist_info->num_vectors > msix_vf) {
542 dev_warn(&pf->pdev->dev,
543 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
544 qvlist_info->num_vectors,
545 msix_vf);
546 ret = -EINVAL;
547 goto err_out;
548 }
549
550 kfree(vf->qvlist_info);
551 size = virtchnl_struct_size(vf->qvlist_info, qv_info,
552 qvlist_info->num_vectors);
553 vf->qvlist_info = kzalloc(size, GFP_KERNEL);
554 if (!vf->qvlist_info) {
555 ret = -ENOMEM;
556 goto err_out;
557 }
558 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
559
560 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
561 for (i = 0; i < qvlist_info->num_vectors; i++) {
562 qv_info = &qvlist_info->qv_info[i];
563
564 /* Validate vector id belongs to this vf */
565 if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) {
566 ret = -EINVAL;
567 goto err_free;
568 }
569
570 v_idx = qv_info->v_idx;
571
572 vf->qvlist_info->qv_info[i] = *qv_info;
573
574 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
575 /* We might be sharing the interrupt, so get the first queue
576 * index and type, push it down the list by adding the new
577 * queue on top. Also link it with the new queue in CEQCTL.
578 */
579 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
580 next_q_idx = FIELD_GET(I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK,
581 reg);
582 next_q_type = FIELD_GET(I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK,
583 reg);
584
585 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
586 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
587 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
588 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
589 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
590 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
591 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
592 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
593
594 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
595 reg = (qv_info->ceq_idx &
596 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
597 (I40E_QUEUE_TYPE_PE_CEQ <<
598 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
599 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
600 }
601
602 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
603 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
604 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
605 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
606
607 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
608 }
609 }
610
611 return 0;
612 err_free:
613 kfree(vf->qvlist_info);
614 vf->qvlist_info = NULL;
615 err_out:
616 return ret;
617 }
618
619 /**
620 * i40e_config_vsi_tx_queue
621 * @vf: pointer to the VF info
622 * @vsi_id: id of VSI as provided by the FW
623 * @vsi_queue_id: vsi relative queue index
624 * @info: config. info
625 *
626 * configure tx queue
627 **/
i40e_config_vsi_tx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_txq_info * info)628 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
629 u16 vsi_queue_id,
630 struct virtchnl_txq_info *info)
631 {
632 struct i40e_pf *pf = vf->pf;
633 struct i40e_hw *hw = &pf->hw;
634 struct i40e_hmc_obj_txq tx_ctx;
635 struct i40e_vsi *vsi;
636 u16 pf_queue_id;
637 u32 qtx_ctl;
638 int ret = 0;
639
640 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
641 ret = -ENOENT;
642 goto error_context;
643 }
644 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
645 vsi = i40e_find_vsi_from_id(pf, vsi_id);
646 if (!vsi) {
647 ret = -ENOENT;
648 goto error_context;
649 }
650
651 /* clear the context structure first */
652 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
653
654 /* only set the required fields */
655 tx_ctx.base = info->dma_ring_addr / 128;
656
657 /* ring_len has to be multiple of 8 */
658 if (!IS_ALIGNED(info->ring_len, 8) ||
659 info->ring_len > I40E_MAX_NUM_DESCRIPTORS_XL710) {
660 ret = -EINVAL;
661 goto error_context;
662 }
663 tx_ctx.qlen = info->ring_len;
664 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
665 tx_ctx.rdylist_act = 0;
666 tx_ctx.head_wb_ena = info->headwb_enabled;
667 tx_ctx.head_wb_addr = info->dma_headwb_addr;
668
669 /* clear the context in the HMC */
670 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
671 if (ret) {
672 dev_err(&pf->pdev->dev,
673 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
674 pf_queue_id, ret);
675 ret = -ENOENT;
676 goto error_context;
677 }
678
679 /* set the context in the HMC */
680 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
681 if (ret) {
682 dev_err(&pf->pdev->dev,
683 "Failed to set VF LAN Tx queue context %d error: %d\n",
684 pf_queue_id, ret);
685 ret = -ENOENT;
686 goto error_context;
687 }
688
689 /* associate this queue with the PCI VF function */
690 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
691 qtx_ctl |= FIELD_PREP(I40E_QTX_CTL_PF_INDX_MASK, hw->pf_id);
692 qtx_ctl |= FIELD_PREP(I40E_QTX_CTL_VFVM_INDX_MASK,
693 vf->vf_id + hw->func_caps.vf_base_id);
694 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
695 i40e_flush(hw);
696
697 error_context:
698 return ret;
699 }
700
701 /**
702 * i40e_config_vsi_rx_queue
703 * @vf: pointer to the VF info
704 * @vsi_id: id of VSI as provided by the FW
705 * @vsi_queue_id: vsi relative queue index
706 * @info: config. info
707 *
708 * configure rx queue
709 **/
i40e_config_vsi_rx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_rxq_info * info)710 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
711 u16 vsi_queue_id,
712 struct virtchnl_rxq_info *info)
713 {
714 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
715 struct i40e_pf *pf = vf->pf;
716 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
717 struct i40e_hw *hw = &pf->hw;
718 struct i40e_hmc_obj_rxq rx_ctx;
719 int ret = 0;
720
721 /* clear the context structure first */
722 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
723
724 /* only set the required fields */
725 rx_ctx.base = info->dma_ring_addr / 128;
726
727 /* ring_len has to be multiple of 32 */
728 if (!IS_ALIGNED(info->ring_len, 32) ||
729 info->ring_len > I40E_MAX_NUM_DESCRIPTORS_XL710) {
730 ret = -EINVAL;
731 goto error_param;
732 }
733 rx_ctx.qlen = info->ring_len;
734
735 if (info->splithdr_enabled) {
736 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
737 I40E_RX_SPLIT_IP |
738 I40E_RX_SPLIT_TCP_UDP |
739 I40E_RX_SPLIT_SCTP;
740 /* header length validation */
741 if (info->hdr_size > ((2 * 1024) - 64)) {
742 ret = -EINVAL;
743 goto error_param;
744 }
745 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
746
747 /* set split mode 10b */
748 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
749 }
750
751 /* databuffer length validation */
752 if (info->databuffer_size > ((16 * 1024) - 128)) {
753 ret = -EINVAL;
754 goto error_param;
755 }
756 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
757
758 /* max pkt. length validation */
759 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
760 ret = -EINVAL;
761 goto error_param;
762 }
763 rx_ctx.rxmax = info->max_pkt_size;
764
765 /* if port VLAN is configured increase the max packet size */
766 if (vsi->info.pvid)
767 rx_ctx.rxmax += VLAN_HLEN;
768
769 /* enable 32bytes desc always */
770 rx_ctx.dsize = 1;
771
772 /* default values */
773 rx_ctx.lrxqthresh = 1;
774 rx_ctx.crcstrip = 1;
775 rx_ctx.prefena = 1;
776 rx_ctx.l2tsel = 1;
777
778 /* clear the context in the HMC */
779 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
780 if (ret) {
781 dev_err(&pf->pdev->dev,
782 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
783 pf_queue_id, ret);
784 ret = -ENOENT;
785 goto error_param;
786 }
787
788 /* set the context in the HMC */
789 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
790 if (ret) {
791 dev_err(&pf->pdev->dev,
792 "Failed to set VF LAN Rx queue context %d error: %d\n",
793 pf_queue_id, ret);
794 ret = -ENOENT;
795 goto error_param;
796 }
797
798 error_param:
799 return ret;
800 }
801
802 /**
803 * i40e_alloc_vsi_res
804 * @vf: pointer to the VF info
805 * @idx: VSI index, applies only for ADq mode, zero otherwise
806 *
807 * alloc VF vsi context & resources
808 **/
i40e_alloc_vsi_res(struct i40e_vf * vf,u8 idx)809 static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
810 {
811 struct i40e_mac_filter *f = NULL;
812 struct i40e_vsi *main_vsi, *vsi;
813 struct i40e_pf *pf = vf->pf;
814 u64 max_tx_rate = 0;
815 int ret = 0;
816
817 main_vsi = i40e_pf_get_main_vsi(pf);
818 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, main_vsi->seid, vf->vf_id);
819
820 if (!vsi) {
821 dev_err(&pf->pdev->dev,
822 "add vsi failed for VF %d, aq_err %d\n",
823 vf->vf_id, pf->hw.aq.asq_last_status);
824 ret = -ENOENT;
825 goto error_alloc_vsi_res;
826 }
827
828 if (!idx) {
829 u64 hashcfg = i40e_pf_get_default_rss_hashcfg(pf);
830 u8 broadcast[ETH_ALEN];
831
832 vf->lan_vsi_idx = vsi->idx;
833 vf->lan_vsi_id = vsi->id;
834 /* If the port VLAN has been configured and then the
835 * VF driver was removed then the VSI port VLAN
836 * configuration was destroyed. Check if there is
837 * a port VLAN and restore the VSI configuration if
838 * needed.
839 */
840 if (vf->port_vlan_id)
841 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
842
843 spin_lock_bh(&vsi->mac_filter_hash_lock);
844 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
845 f = i40e_add_mac_filter(vsi,
846 vf->default_lan_addr.addr);
847 if (!f)
848 dev_info(&pf->pdev->dev,
849 "Could not add MAC filter %pM for VF %d\n",
850 vf->default_lan_addr.addr, vf->vf_id);
851 }
852 eth_broadcast_addr(broadcast);
853 f = i40e_add_mac_filter(vsi, broadcast);
854 if (!f)
855 dev_info(&pf->pdev->dev,
856 "Could not allocate VF broadcast filter\n");
857 spin_unlock_bh(&vsi->mac_filter_hash_lock);
858 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hashcfg);
859 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id),
860 (u32)(hashcfg >> 32));
861 /* program mac filter only for VF VSI */
862 ret = i40e_sync_vsi_filters(vsi);
863 if (ret)
864 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
865 }
866
867 /* storing VSI index and id for ADq and don't apply the mac filter */
868 if (vf->adq_enabled) {
869 vf->ch[idx].vsi_idx = vsi->idx;
870 vf->ch[idx].vsi_id = vsi->id;
871 }
872
873 /* Set VF bandwidth if specified */
874 if (vf->tx_rate) {
875 max_tx_rate = vf->tx_rate;
876 } else if (vf->ch[idx].max_tx_rate) {
877 max_tx_rate = vf->ch[idx].max_tx_rate;
878 }
879
880 if (max_tx_rate) {
881 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
882 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
883 max_tx_rate, 0, NULL);
884 if (ret)
885 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
886 vf->vf_id, ret);
887 }
888
889 error_alloc_vsi_res:
890 return ret;
891 }
892
893 /**
894 * i40e_map_pf_queues_to_vsi
895 * @vf: pointer to the VF info
896 *
897 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
898 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
899 **/
i40e_map_pf_queues_to_vsi(struct i40e_vf * vf)900 static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
901 {
902 struct i40e_pf *pf = vf->pf;
903 struct i40e_hw *hw = &pf->hw;
904 u32 reg, num_tc = 1; /* VF has at least one traffic class */
905 u16 vsi_id, qps;
906 int i, j;
907
908 if (vf->adq_enabled)
909 num_tc = vf->num_tc;
910
911 for (i = 0; i < num_tc; i++) {
912 if (vf->adq_enabled) {
913 qps = vf->ch[i].num_qps;
914 vsi_id = vf->ch[i].vsi_id;
915 } else {
916 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
917 vsi_id = vf->lan_vsi_id;
918 }
919
920 for (j = 0; j < 7; j++) {
921 if (j * 2 >= qps) {
922 /* end of list */
923 reg = 0x07FF07FF;
924 } else {
925 u16 qid = i40e_vc_get_pf_queue_id(vf,
926 vsi_id,
927 j * 2);
928 reg = qid;
929 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
930 (j * 2) + 1);
931 reg |= qid << 16;
932 }
933 i40e_write_rx_ctl(hw,
934 I40E_VSILAN_QTABLE(j, vsi_id),
935 reg);
936 }
937 }
938 }
939
940 /**
941 * i40e_map_pf_to_vf_queues
942 * @vf: pointer to the VF info
943 *
944 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
945 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
946 **/
i40e_map_pf_to_vf_queues(struct i40e_vf * vf)947 static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
948 {
949 struct i40e_pf *pf = vf->pf;
950 struct i40e_hw *hw = &pf->hw;
951 u32 reg, total_qps = 0;
952 u32 qps, num_tc = 1; /* VF has at least one traffic class */
953 u16 vsi_id, qid;
954 int i, j;
955
956 if (vf->adq_enabled)
957 num_tc = vf->num_tc;
958
959 for (i = 0; i < num_tc; i++) {
960 if (vf->adq_enabled) {
961 qps = vf->ch[i].num_qps;
962 vsi_id = vf->ch[i].vsi_id;
963 } else {
964 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
965 vsi_id = vf->lan_vsi_id;
966 }
967
968 for (j = 0; j < qps; j++) {
969 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
970
971 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
972 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
973 reg);
974 total_qps++;
975 }
976 }
977 }
978
979 /**
980 * i40e_enable_vf_mappings
981 * @vf: pointer to the VF info
982 *
983 * enable VF mappings
984 **/
i40e_enable_vf_mappings(struct i40e_vf * vf)985 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
986 {
987 struct i40e_pf *pf = vf->pf;
988 struct i40e_hw *hw = &pf->hw;
989 u32 reg;
990
991 /* Tell the hardware we're using noncontiguous mapping. HW requires
992 * that VF queues be mapped using this method, even when they are
993 * contiguous in real life
994 */
995 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
996 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
997
998 /* enable VF vplan_qtable mappings */
999 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
1000 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
1001
1002 i40e_map_pf_to_vf_queues(vf);
1003 i40e_map_pf_queues_to_vsi(vf);
1004
1005 i40e_flush(hw);
1006 }
1007
1008 /**
1009 * i40e_disable_vf_mappings
1010 * @vf: pointer to the VF info
1011 *
1012 * disable VF mappings
1013 **/
i40e_disable_vf_mappings(struct i40e_vf * vf)1014 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
1015 {
1016 struct i40e_pf *pf = vf->pf;
1017 struct i40e_hw *hw = &pf->hw;
1018 int i;
1019
1020 /* disable qp mappings */
1021 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
1022 for (i = 0; i < I40E_MAX_VSI_QP; i++)
1023 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
1024 I40E_QUEUE_END_OF_LIST);
1025 i40e_flush(hw);
1026 }
1027
1028 /**
1029 * i40e_free_vf_res
1030 * @vf: pointer to the VF info
1031 *
1032 * free VF resources
1033 **/
i40e_free_vf_res(struct i40e_vf * vf)1034 static void i40e_free_vf_res(struct i40e_vf *vf)
1035 {
1036 struct i40e_pf *pf = vf->pf;
1037 struct i40e_hw *hw = &pf->hw;
1038 u32 reg_idx, reg;
1039 int i, j, msix_vf;
1040
1041 /* Start by disabling VF's configuration API to prevent the OS from
1042 * accessing the VF's VSI after it's freed / invalidated.
1043 */
1044 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1045
1046 /* It's possible the VF had requeuested more queues than the default so
1047 * do the accounting here when we're about to free them.
1048 */
1049 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
1050 pf->queues_left += vf->num_queue_pairs -
1051 I40E_DEFAULT_QUEUES_PER_VF;
1052 }
1053
1054 /* free vsi & disconnect it from the parent uplink */
1055 if (vf->lan_vsi_idx) {
1056 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
1057 vf->lan_vsi_idx = 0;
1058 vf->lan_vsi_id = 0;
1059 }
1060
1061 /* do the accounting and remove additional ADq VSI's */
1062 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
1063 for (j = 0; j < vf->num_tc; j++) {
1064 /* At this point VSI0 is already released so don't
1065 * release it again and only clear their values in
1066 * structure variables
1067 */
1068 if (j)
1069 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
1070 vf->ch[j].vsi_idx = 0;
1071 vf->ch[j].vsi_id = 0;
1072 }
1073 }
1074 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
1075
1076 /* disable interrupts so the VF starts in a known state */
1077 for (i = 0; i < msix_vf; i++) {
1078 /* format is same for both registers */
1079 if (0 == i)
1080 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
1081 else
1082 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
1083 (vf->vf_id))
1084 + (i - 1));
1085 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
1086 i40e_flush(hw);
1087 }
1088
1089 /* clear the irq settings */
1090 for (i = 0; i < msix_vf; i++) {
1091 /* format is same for both registers */
1092 if (0 == i)
1093 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
1094 else
1095 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
1096 (vf->vf_id))
1097 + (i - 1));
1098 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1099 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1100 wr32(hw, reg_idx, reg);
1101 i40e_flush(hw);
1102 }
1103 /* reset some of the state variables keeping track of the resources */
1104 vf->num_queue_pairs = 0;
1105 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1106 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1107 }
1108
1109 /**
1110 * i40e_alloc_vf_res
1111 * @vf: pointer to the VF info
1112 *
1113 * allocate VF resources
1114 **/
i40e_alloc_vf_res(struct i40e_vf * vf)1115 static int i40e_alloc_vf_res(struct i40e_vf *vf)
1116 {
1117 struct i40e_pf *pf = vf->pf;
1118 int total_queue_pairs = 0;
1119 int ret, idx;
1120
1121 if (vf->num_req_queues &&
1122 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1123 pf->num_vf_qps = vf->num_req_queues;
1124 else
1125 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1126
1127 /* allocate hw vsi context & associated resources */
1128 ret = i40e_alloc_vsi_res(vf, 0);
1129 if (ret)
1130 goto error_alloc;
1131 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1132
1133 /* allocate additional VSIs based on tc information for ADq */
1134 if (vf->adq_enabled) {
1135 if (pf->queues_left >=
1136 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1137 /* TC 0 always belongs to VF VSI */
1138 for (idx = 1; idx < vf->num_tc; idx++) {
1139 ret = i40e_alloc_vsi_res(vf, idx);
1140 if (ret)
1141 goto error_alloc;
1142 }
1143 /* send correct number of queues */
1144 total_queue_pairs = I40E_MAX_VF_QUEUES;
1145 } else {
1146 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1147 vf->vf_id);
1148 vf->adq_enabled = false;
1149 }
1150 }
1151
1152 /* We account for each VF to get a default number of queue pairs. If
1153 * the VF has now requested more, we need to account for that to make
1154 * certain we never request more queues than we actually have left in
1155 * HW.
1156 */
1157 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1158 pf->queues_left -=
1159 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1160
1161 if (vf->trusted)
1162 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1163 else
1164 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1165
1166 /* store the total qps number for the runtime
1167 * VF req validation
1168 */
1169 vf->num_queue_pairs = total_queue_pairs;
1170
1171 /* VF is now completely initialized */
1172 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1173
1174 error_alloc:
1175 if (ret)
1176 i40e_free_vf_res(vf);
1177
1178 return ret;
1179 }
1180
1181 #define VF_DEVICE_STATUS 0xAA
1182 #define VF_TRANS_PENDING_MASK 0x20
1183 /**
1184 * i40e_quiesce_vf_pci
1185 * @vf: pointer to the VF structure
1186 *
1187 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1188 * if the transactions never clear.
1189 **/
i40e_quiesce_vf_pci(struct i40e_vf * vf)1190 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1191 {
1192 struct i40e_pf *pf = vf->pf;
1193 struct i40e_hw *hw = &pf->hw;
1194 int vf_abs_id, i;
1195 u32 reg;
1196
1197 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1198
1199 wr32(hw, I40E_PF_PCI_CIAA,
1200 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1201 for (i = 0; i < 100; i++) {
1202 reg = rd32(hw, I40E_PF_PCI_CIAD);
1203 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1204 return 0;
1205 udelay(1);
1206 }
1207 return -EIO;
1208 }
1209
1210 /**
1211 * __i40e_getnum_vf_vsi_vlan_filters
1212 * @vsi: pointer to the vsi
1213 *
1214 * called to get the number of VLANs offloaded on this VF
1215 **/
__i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1216 static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1217 {
1218 struct i40e_mac_filter *f;
1219 u16 num_vlans = 0, bkt;
1220
1221 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1222 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1223 num_vlans++;
1224 }
1225
1226 return num_vlans;
1227 }
1228
1229 /**
1230 * i40e_getnum_vf_vsi_vlan_filters
1231 * @vsi: pointer to the vsi
1232 *
1233 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
1234 **/
i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1235 static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1236 {
1237 int num_vlans;
1238
1239 spin_lock_bh(&vsi->mac_filter_hash_lock);
1240 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1241 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1242
1243 return num_vlans;
1244 }
1245
1246 /**
1247 * i40e_get_vlan_list_sync
1248 * @vsi: pointer to the VSI
1249 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller
1250 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
1251 * This array is allocated here, but has to be freed in caller.
1252 *
1253 * Called to get number of VLANs and VLAN list present in mac_filter_hash.
1254 **/
i40e_get_vlan_list_sync(struct i40e_vsi * vsi,u16 * num_vlans,s16 ** vlan_list)1255 static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
1256 s16 **vlan_list)
1257 {
1258 struct i40e_mac_filter *f;
1259 int i = 0;
1260 int bkt;
1261
1262 spin_lock_bh(&vsi->mac_filter_hash_lock);
1263 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1264 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC);
1265 if (!(*vlan_list))
1266 goto err;
1267
1268 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1269 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1270 continue;
1271 (*vlan_list)[i++] = f->vlan;
1272 }
1273 err:
1274 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1275 }
1276
1277 /**
1278 * i40e_set_vsi_promisc
1279 * @vf: pointer to the VF struct
1280 * @seid: VSI number
1281 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
1282 * for a given VLAN
1283 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
1284 * for a given VLAN
1285 * @vl: List of VLANs - apply filter for given VLANs
1286 * @num_vlans: Number of elements in @vl
1287 **/
1288 static int
i40e_set_vsi_promisc(struct i40e_vf * vf,u16 seid,bool multi_enable,bool unicast_enable,s16 * vl,u16 num_vlans)1289 i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
1290 bool unicast_enable, s16 *vl, u16 num_vlans)
1291 {
1292 struct i40e_pf *pf = vf->pf;
1293 struct i40e_hw *hw = &pf->hw;
1294 int aq_ret, aq_tmp = 0;
1295 int i;
1296
1297 /* No VLAN to set promisc on, set on VSI */
1298 if (!num_vlans || !vl) {
1299 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid,
1300 multi_enable,
1301 NULL);
1302 if (aq_ret) {
1303 int aq_err = pf->hw.aq.asq_last_status;
1304
1305 dev_err(&pf->pdev->dev,
1306 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1307 vf->vf_id, ERR_PTR(aq_ret),
1308 libie_aq_str(aq_err));
1309
1310 return aq_ret;
1311 }
1312
1313 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid,
1314 unicast_enable,
1315 NULL, true);
1316
1317 if (aq_ret) {
1318 int aq_err = pf->hw.aq.asq_last_status;
1319
1320 dev_err(&pf->pdev->dev,
1321 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1322 vf->vf_id, ERR_PTR(aq_ret),
1323 libie_aq_str(aq_err));
1324 }
1325
1326 return aq_ret;
1327 }
1328
1329 for (i = 0; i < num_vlans; i++) {
1330 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
1331 multi_enable,
1332 vl[i], NULL);
1333 if (aq_ret) {
1334 int aq_err = pf->hw.aq.asq_last_status;
1335
1336 dev_err(&pf->pdev->dev,
1337 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1338 vf->vf_id, ERR_PTR(aq_ret),
1339 libie_aq_str(aq_err));
1340
1341 if (!aq_tmp)
1342 aq_tmp = aq_ret;
1343 }
1344
1345 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
1346 unicast_enable,
1347 vl[i], NULL);
1348 if (aq_ret) {
1349 int aq_err = pf->hw.aq.asq_last_status;
1350
1351 dev_err(&pf->pdev->dev,
1352 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1353 vf->vf_id, ERR_PTR(aq_ret),
1354 libie_aq_str(aq_err));
1355
1356 if (!aq_tmp)
1357 aq_tmp = aq_ret;
1358 }
1359 }
1360
1361 if (aq_tmp)
1362 aq_ret = aq_tmp;
1363
1364 return aq_ret;
1365 }
1366
1367 /**
1368 * i40e_config_vf_promiscuous_mode
1369 * @vf: pointer to the VF info
1370 * @vsi_id: VSI id
1371 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1372 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1373 *
1374 * Called from the VF to configure the promiscuous mode of
1375 * VF vsis and from the VF reset path to reset promiscuous mode.
1376 **/
i40e_config_vf_promiscuous_mode(struct i40e_vf * vf,u16 vsi_id,bool allmulti,bool alluni)1377 static int i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1378 u16 vsi_id,
1379 bool allmulti,
1380 bool alluni)
1381 {
1382 struct i40e_pf *pf = vf->pf;
1383 struct i40e_vsi *vsi;
1384 int aq_ret = 0;
1385 u16 num_vlans;
1386 s16 *vl;
1387
1388 vsi = i40e_find_vsi_from_id(pf, vsi_id);
1389 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1390 return -EINVAL;
1391
1392 if (vf->port_vlan_id) {
1393 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti,
1394 alluni, &vf->port_vlan_id, 1);
1395 return aq_ret;
1396 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1397 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl);
1398
1399 if (!vl)
1400 return -ENOMEM;
1401
1402 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1403 vl, num_vlans);
1404 kfree(vl);
1405 return aq_ret;
1406 }
1407
1408 /* no VLANs to set on, set on VSI */
1409 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1410 NULL, 0);
1411 return aq_ret;
1412 }
1413
1414 /**
1415 * i40e_sync_vfr_reset
1416 * @hw: pointer to hw struct
1417 * @vf_id: VF identifier
1418 *
1419 * Before trigger hardware reset, we need to know if no other process has
1420 * reserved the hardware for any reset operations. This check is done by
1421 * examining the status of the RSTAT1 register used to signal the reset.
1422 **/
i40e_sync_vfr_reset(struct i40e_hw * hw,int vf_id)1423 static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1424 {
1425 u32 reg;
1426 int i;
1427
1428 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1429 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1430 I40E_VFINT_ICR0_ADMINQ_MASK;
1431 if (reg)
1432 return 0;
1433
1434 usleep_range(100, 200);
1435 }
1436
1437 return -EAGAIN;
1438 }
1439
1440 /**
1441 * i40e_trigger_vf_reset
1442 * @vf: pointer to the VF structure
1443 * @flr: VFLR was issued or not
1444 *
1445 * Trigger hardware to start a reset for a particular VF. Expects the caller
1446 * to wait the proper amount of time to allow hardware to reset the VF before
1447 * it cleans up and restores VF functionality.
1448 **/
i40e_trigger_vf_reset(struct i40e_vf * vf,bool flr)1449 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1450 {
1451 struct i40e_pf *pf = vf->pf;
1452 struct i40e_hw *hw = &pf->hw;
1453 u32 reg, reg_idx, bit_idx;
1454 bool vf_active;
1455 u32 radq;
1456
1457 /* warn the VF */
1458 vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1459
1460 /* Disable VF's configuration API during reset. The flag is re-enabled
1461 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1462 * It's normally disabled in i40e_free_vf_res(), but it's safer
1463 * to do it earlier to give some time to finish to any VF config
1464 * functions that may still be running at this point.
1465 */
1466 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1467 clear_bit(I40E_VF_STATE_RESOURCES_LOADED, &vf->vf_states);
1468
1469 /* In the case of a VFLR, the HW has already reset the VF and we
1470 * just need to clean up, so don't hit the VFRTRIG register.
1471 */
1472 if (!flr) {
1473 /* Sync VFR reset before trigger next one */
1474 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1475 I40E_VFINT_ICR0_ADMINQ_MASK;
1476 if (vf_active && !radq)
1477 /* waiting for finish reset by virtual driver */
1478 if (i40e_sync_vfr_reset(hw, vf->vf_id))
1479 dev_info(&pf->pdev->dev,
1480 "Reset VF %d never finished\n",
1481 vf->vf_id);
1482
1483 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1484 * in progress state in rstat1 register.
1485 */
1486 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1487 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1488 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1489 i40e_flush(hw);
1490 }
1491 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1492 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1493 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1494 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1495 i40e_flush(hw);
1496
1497 if (i40e_quiesce_vf_pci(vf))
1498 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1499 vf->vf_id);
1500 }
1501
1502 /**
1503 * i40e_cleanup_reset_vf
1504 * @vf: pointer to the VF structure
1505 *
1506 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1507 * have verified whether the reset is finished properly, and ensure the
1508 * minimum amount of wait time has passed.
1509 **/
i40e_cleanup_reset_vf(struct i40e_vf * vf)1510 static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1511 {
1512 struct i40e_pf *pf = vf->pf;
1513 struct i40e_hw *hw = &pf->hw;
1514 u32 reg;
1515
1516 /* disable promisc modes in case they were enabled */
1517 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1518
1519 /* free VF resources to begin resetting the VSI state */
1520 i40e_free_vf_res(vf);
1521
1522 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1523 * By doing this we allow HW to access VF memory at any point. If we
1524 * did it any sooner, HW could access memory while it was being freed
1525 * in i40e_free_vf_res(), causing an IOMMU fault.
1526 *
1527 * On the other hand, this needs to be done ASAP, because the VF driver
1528 * is waiting for this to happen and may report a timeout. It's
1529 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1530 * it.
1531 */
1532 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1533 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1534 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1535
1536 /* reallocate VF resources to finish resetting the VSI state */
1537 if (!i40e_alloc_vf_res(vf)) {
1538 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1539 i40e_enable_vf_mappings(vf);
1540 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1541 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1542 /* Do not notify the client during VF init */
1543 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1544 &vf->vf_states))
1545 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1546 vf->num_vlan = 0;
1547 }
1548
1549 /* Tell the VF driver the reset is done. This needs to be done only
1550 * after VF has been fully initialized, because the VF driver may
1551 * request resources immediately after setting this flag.
1552 */
1553 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1554 }
1555
1556 /**
1557 * i40e_reset_vf
1558 * @vf: pointer to the VF structure
1559 * @flr: VFLR was issued or not
1560 *
1561 * Return: True if reset was performed successfully or if resets are disabled.
1562 * False if reset is already in progress.
1563 **/
i40e_reset_vf(struct i40e_vf * vf,bool flr)1564 bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1565 {
1566 struct i40e_pf *pf = vf->pf;
1567 struct i40e_hw *hw = &pf->hw;
1568 bool rsd = false;
1569 u32 reg;
1570 int i;
1571
1572 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1573 return true;
1574
1575 /* Bail out if VFs are disabled. */
1576 if (test_bit(__I40E_VF_DISABLE, pf->state))
1577 return true;
1578
1579 /* If VF is being reset already we don't need to continue. */
1580 if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1581 return false;
1582
1583 i40e_trigger_vf_reset(vf, flr);
1584
1585 /* poll VPGEN_VFRSTAT reg to make sure
1586 * that reset is complete
1587 */
1588 for (i = 0; i < 10; i++) {
1589 /* VF reset requires driver to first reset the VF and then
1590 * poll the status register to make sure that the reset
1591 * completed successfully. Due to internal HW FIFO flushes,
1592 * we must wait 10ms before the register will be valid.
1593 */
1594 usleep_range(10000, 20000);
1595 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1596 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1597 rsd = true;
1598 break;
1599 }
1600 }
1601
1602 if (flr)
1603 usleep_range(10000, 20000);
1604
1605 if (!rsd)
1606 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1607 vf->vf_id);
1608 usleep_range(10000, 20000);
1609
1610 /* On initial reset, we don't have any queues to disable */
1611 if (vf->lan_vsi_idx != 0)
1612 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1613
1614 i40e_cleanup_reset_vf(vf);
1615
1616 i40e_flush(hw);
1617 usleep_range(20000, 40000);
1618 clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states);
1619
1620 return true;
1621 }
1622
1623 /**
1624 * i40e_reset_all_vfs
1625 * @pf: pointer to the PF structure
1626 * @flr: VFLR was issued or not
1627 *
1628 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1629 * VF, then do all the waiting in one chunk, and finally finish restoring each
1630 * VF after the wait. This is useful during PF routines which need to reset
1631 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1632 *
1633 * Returns true if any VFs were reset, and false otherwise.
1634 **/
i40e_reset_all_vfs(struct i40e_pf * pf,bool flr)1635 bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1636 {
1637 struct i40e_hw *hw = &pf->hw;
1638 struct i40e_vf *vf;
1639 u32 reg;
1640 int i;
1641
1642 /* If we don't have any VFs, then there is nothing to reset */
1643 if (!pf->num_alloc_vfs)
1644 return false;
1645
1646 /* If VFs have been disabled, there is no need to reset */
1647 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1648 return false;
1649
1650 /* Begin reset on all VFs at once */
1651 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1652 /* If VF is being reset no need to trigger reset again */
1653 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1654 i40e_trigger_vf_reset(vf, flr);
1655 }
1656
1657 /* HW requires some time to make sure it can flush the FIFO for a VF
1658 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1659 * sequence to make sure that it has completed. We'll keep track of
1660 * the VFs using a simple iterator that increments once that VF has
1661 * finished resetting.
1662 */
1663 for (i = 0, vf = &pf->vf[0]; i < 10 && vf < &pf->vf[pf->num_alloc_vfs]; ++i) {
1664 usleep_range(10000, 20000);
1665
1666 /* Check each VF in sequence, beginning with the VF to fail
1667 * the previous check.
1668 */
1669 while (vf < &pf->vf[pf->num_alloc_vfs]) {
1670 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
1671 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1672 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1673 break;
1674 }
1675
1676 /* If the current VF has finished resetting, move on
1677 * to the next VF in sequence.
1678 */
1679 ++vf;
1680 }
1681 }
1682
1683 if (flr)
1684 usleep_range(10000, 20000);
1685
1686 /* Display a warning if at least one VF didn't manage to reset in
1687 * time, but continue on with the operation.
1688 */
1689 if (vf < &pf->vf[pf->num_alloc_vfs])
1690 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1691 vf->vf_id);
1692 usleep_range(10000, 20000);
1693
1694 /* Begin disabling all the rings associated with VFs, but do not wait
1695 * between each VF.
1696 */
1697 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1698 /* On initial reset, we don't have any queues to disable */
1699 if (vf->lan_vsi_idx == 0)
1700 continue;
1701
1702 /* If VF is reset in another thread just continue */
1703 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1704 continue;
1705
1706 i40e_vsi_stop_rings_no_wait(pf->vsi[vf->lan_vsi_idx]);
1707 }
1708
1709 /* Now that we've notified HW to disable all of the VF rings, wait
1710 * until they finish.
1711 */
1712 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1713 /* On initial reset, we don't have any queues to disable */
1714 if (vf->lan_vsi_idx == 0)
1715 continue;
1716
1717 /* If VF is reset in another thread just continue */
1718 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1719 continue;
1720
1721 i40e_vsi_wait_queues_disabled(pf->vsi[vf->lan_vsi_idx]);
1722 }
1723
1724 /* Hw may need up to 50ms to finish disabling the RX queues. We
1725 * minimize the wait by delaying only once for all VFs.
1726 */
1727 mdelay(50);
1728
1729 /* Finish the reset on each VF */
1730 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1731 /* If VF is reset in another thread just continue */
1732 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1733 continue;
1734
1735 i40e_cleanup_reset_vf(vf);
1736 }
1737
1738 i40e_flush(hw);
1739 usleep_range(20000, 40000);
1740 clear_bit(__I40E_VF_DISABLE, pf->state);
1741
1742 return true;
1743 }
1744
1745 /**
1746 * i40e_free_vfs
1747 * @pf: pointer to the PF structure
1748 *
1749 * free VF resources
1750 **/
i40e_free_vfs(struct i40e_pf * pf)1751 void i40e_free_vfs(struct i40e_pf *pf)
1752 {
1753 struct i40e_hw *hw = &pf->hw;
1754 u32 reg_idx, bit_idx;
1755 int i, tmp, vf_id;
1756
1757 if (!pf->vf)
1758 return;
1759
1760 set_bit(__I40E_VFS_RELEASING, pf->state);
1761 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1762 usleep_range(1000, 2000);
1763
1764 i40e_notify_client_of_vf_enable(pf, 0);
1765
1766 /* Disable IOV before freeing resources. This lets any VF drivers
1767 * running in the host get themselves cleaned up before we yank
1768 * the carpet out from underneath their feet.
1769 */
1770 if (!pci_vfs_assigned(pf->pdev))
1771 pci_disable_sriov(pf->pdev);
1772 else
1773 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1774
1775 /* Amortize wait time by stopping all VFs at the same time */
1776 for (i = 0; i < pf->num_alloc_vfs; i++) {
1777 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1778 continue;
1779
1780 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1781 }
1782
1783 for (i = 0; i < pf->num_alloc_vfs; i++) {
1784 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1785 continue;
1786
1787 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1788 }
1789
1790 /* free up VF resources */
1791 tmp = pf->num_alloc_vfs;
1792 pf->num_alloc_vfs = 0;
1793 for (i = 0; i < tmp; i++) {
1794 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1795 i40e_free_vf_res(&pf->vf[i]);
1796 /* disable qp mappings */
1797 i40e_disable_vf_mappings(&pf->vf[i]);
1798 }
1799
1800 kfree(pf->vf);
1801 pf->vf = NULL;
1802
1803 /* This check is for when the driver is unloaded while VFs are
1804 * assigned. Setting the number of VFs to 0 through sysfs is caught
1805 * before this function ever gets called.
1806 */
1807 if (!pci_vfs_assigned(pf->pdev)) {
1808 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1809 * work correctly when SR-IOV gets re-enabled.
1810 */
1811 for (vf_id = 0; vf_id < tmp; vf_id++) {
1812 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1813 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1814 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1815 }
1816 }
1817 clear_bit(__I40E_VF_DISABLE, pf->state);
1818 clear_bit(__I40E_VFS_RELEASING, pf->state);
1819 }
1820
1821 #ifdef CONFIG_PCI_IOV
1822 /**
1823 * i40e_alloc_vfs
1824 * @pf: pointer to the PF structure
1825 * @num_alloc_vfs: number of VFs to allocate
1826 *
1827 * allocate VF resources
1828 **/
i40e_alloc_vfs(struct i40e_pf * pf,u16 num_alloc_vfs)1829 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1830 {
1831 struct i40e_vf *vfs;
1832 int i, ret = 0;
1833
1834 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1835 i40e_irq_dynamic_disable_icr0(pf);
1836
1837 /* Check to see if we're just allocating resources for extant VFs */
1838 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1839 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1840 if (ret) {
1841 clear_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1842 pf->num_alloc_vfs = 0;
1843 goto err_iov;
1844 }
1845 }
1846 /* allocate memory */
1847 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1848 if (!vfs) {
1849 ret = -ENOMEM;
1850 goto err_alloc;
1851 }
1852 pf->vf = vfs;
1853
1854 /* apply default profile */
1855 for (i = 0; i < num_alloc_vfs; i++) {
1856 vfs[i].pf = pf;
1857 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1858 vfs[i].vf_id = i;
1859
1860 /* assign default capabilities */
1861 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1862 vfs[i].spoofchk = true;
1863
1864 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1865
1866 }
1867 pf->num_alloc_vfs = num_alloc_vfs;
1868
1869 /* VF resources get allocated during reset */
1870 i40e_reset_all_vfs(pf, false);
1871
1872 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1873
1874 err_alloc:
1875 if (ret)
1876 i40e_free_vfs(pf);
1877 err_iov:
1878 /* Re-enable interrupt 0. */
1879 i40e_irq_dynamic_enable_icr0(pf);
1880 return ret;
1881 }
1882
1883 #endif
1884 /**
1885 * i40e_pci_sriov_enable
1886 * @pdev: pointer to a pci_dev structure
1887 * @num_vfs: number of VFs to allocate
1888 *
1889 * Enable or change the number of VFs
1890 **/
i40e_pci_sriov_enable(struct pci_dev * pdev,int num_vfs)1891 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1892 {
1893 #ifdef CONFIG_PCI_IOV
1894 struct i40e_pf *pf = pci_get_drvdata(pdev);
1895 int pre_existing_vfs = pci_num_vf(pdev);
1896 int err = 0;
1897
1898 if (test_bit(__I40E_TESTING, pf->state)) {
1899 dev_warn(&pdev->dev,
1900 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1901 err = -EPERM;
1902 goto err_out;
1903 }
1904
1905 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1906 i40e_free_vfs(pf);
1907 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1908 goto out;
1909
1910 if (num_vfs > pf->num_req_vfs) {
1911 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1912 num_vfs, pf->num_req_vfs);
1913 err = -EPERM;
1914 goto err_out;
1915 }
1916
1917 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1918 err = i40e_alloc_vfs(pf, num_vfs);
1919 if (err) {
1920 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1921 goto err_out;
1922 }
1923
1924 out:
1925 return num_vfs;
1926
1927 err_out:
1928 return err;
1929 #endif
1930 return 0;
1931 }
1932
1933 /**
1934 * i40e_pci_sriov_configure
1935 * @pdev: pointer to a pci_dev structure
1936 * @num_vfs: number of VFs to allocate
1937 *
1938 * Enable or change the number of VFs. Called when the user updates the number
1939 * of VFs in sysfs.
1940 **/
i40e_pci_sriov_configure(struct pci_dev * pdev,int num_vfs)1941 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1942 {
1943 struct i40e_pf *pf = pci_get_drvdata(pdev);
1944 int ret = 0;
1945
1946 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1947 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1948 return -EAGAIN;
1949 }
1950
1951 if (num_vfs) {
1952 if (!test_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags)) {
1953 set_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1954 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1955 }
1956 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1957 goto sriov_configure_out;
1958 }
1959
1960 if (!pci_vfs_assigned(pf->pdev)) {
1961 i40e_free_vfs(pf);
1962 clear_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1963 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1964 } else {
1965 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1966 ret = -EINVAL;
1967 goto sriov_configure_out;
1968 }
1969 sriov_configure_out:
1970 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1971 return ret;
1972 }
1973
1974 /***********************virtual channel routines******************/
1975
1976 /**
1977 * i40e_vc_send_msg_to_vf
1978 * @vf: pointer to the VF info
1979 * @v_opcode: virtual channel opcode
1980 * @v_retval: virtual channel return value
1981 * @msg: pointer to the msg buffer
1982 * @msglen: msg length
1983 *
1984 * send msg to VF
1985 **/
i40e_vc_send_msg_to_vf(struct i40e_vf * vf,u32 v_opcode,u32 v_retval,u8 * msg,u16 msglen)1986 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1987 u32 v_retval, u8 *msg, u16 msglen)
1988 {
1989 struct i40e_pf *pf;
1990 struct i40e_hw *hw;
1991 int abs_vf_id;
1992 int aq_ret;
1993
1994 /* validate the request */
1995 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1996 return -EINVAL;
1997
1998 pf = vf->pf;
1999 hw = &pf->hw;
2000 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
2001
2002 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
2003 msg, msglen, NULL);
2004 if (aq_ret) {
2005 dev_info(&pf->pdev->dev,
2006 "Unable to send the message to VF %d aq_err %d\n",
2007 vf->vf_id, pf->hw.aq.asq_last_status);
2008 return -EIO;
2009 }
2010
2011 return 0;
2012 }
2013
2014 /**
2015 * i40e_vc_send_resp_to_vf
2016 * @vf: pointer to the VF info
2017 * @opcode: operation code
2018 * @retval: return value
2019 *
2020 * send resp msg to VF
2021 **/
i40e_vc_send_resp_to_vf(struct i40e_vf * vf,enum virtchnl_ops opcode,int retval)2022 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
2023 enum virtchnl_ops opcode,
2024 int retval)
2025 {
2026 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
2027 }
2028
2029 /**
2030 * i40e_sync_vf_state
2031 * @vf: pointer to the VF info
2032 * @state: VF state
2033 *
2034 * Called from a VF message to synchronize the service with a potential
2035 * VF reset state
2036 **/
i40e_sync_vf_state(struct i40e_vf * vf,enum i40e_vf_states state)2037 static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
2038 {
2039 int i;
2040
2041 /* When handling some messages, it needs VF state to be set.
2042 * It is possible that this flag is cleared during VF reset,
2043 * so there is a need to wait until the end of the reset to
2044 * handle the request message correctly.
2045 */
2046 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
2047 if (test_bit(state, &vf->vf_states))
2048 return true;
2049 usleep_range(10000, 20000);
2050 }
2051
2052 return test_bit(state, &vf->vf_states);
2053 }
2054
2055 /**
2056 * i40e_vc_get_version_msg
2057 * @vf: pointer to the VF info
2058 * @msg: pointer to the msg buffer
2059 *
2060 * called from the VF to request the API version used by the PF
2061 **/
i40e_vc_get_version_msg(struct i40e_vf * vf,u8 * msg)2062 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
2063 {
2064 struct virtchnl_version_info info = {
2065 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
2066 };
2067
2068 vf->vf_ver = *(struct virtchnl_version_info *)msg;
2069 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
2070 if (VF_IS_V10(&vf->vf_ver))
2071 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
2072 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
2073 0, (u8 *)&info,
2074 sizeof(struct virtchnl_version_info));
2075 }
2076
2077 /**
2078 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
2079 * @vf: pointer to VF structure
2080 **/
i40e_del_qch(struct i40e_vf * vf)2081 static void i40e_del_qch(struct i40e_vf *vf)
2082 {
2083 struct i40e_pf *pf = vf->pf;
2084 int i;
2085
2086 /* first element in the array belongs to primary VF VSI and we shouldn't
2087 * delete it. We should however delete the rest of the VSIs created
2088 */
2089 for (i = 1; i < vf->num_tc; i++) {
2090 if (vf->ch[i].vsi_idx) {
2091 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
2092 vf->ch[i].vsi_idx = 0;
2093 vf->ch[i].vsi_id = 0;
2094 }
2095 }
2096 }
2097
2098 /**
2099 * i40e_vc_get_max_frame_size
2100 * @vf: pointer to the VF
2101 *
2102 * Max frame size is determined based on the current port's max frame size and
2103 * whether a port VLAN is configured on this VF. The VF is not aware whether
2104 * it's in a port VLAN so the PF needs to account for this in max frame size
2105 * checks and sending the max frame size to the VF.
2106 **/
i40e_vc_get_max_frame_size(struct i40e_vf * vf)2107 static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2108 {
2109 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2110
2111 if (vf->port_vlan_id)
2112 max_frame_size -= VLAN_HLEN;
2113
2114 return max_frame_size;
2115 }
2116
2117 /**
2118 * i40e_vc_get_vf_resources_msg
2119 * @vf: pointer to the VF info
2120 * @msg: pointer to the msg buffer
2121 *
2122 * called from the VF to request its resources
2123 **/
i40e_vc_get_vf_resources_msg(struct i40e_vf * vf,u8 * msg)2124 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2125 {
2126 struct virtchnl_vf_resource *vfres = NULL;
2127 struct i40e_pf *pf = vf->pf;
2128 struct i40e_vsi *vsi;
2129 int num_vsis = 1;
2130 int aq_ret = 0;
2131 size_t len = 0;
2132 int ret;
2133
2134 i40e_sync_vf_state(vf, I40E_VF_STATE_INIT);
2135
2136 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) ||
2137 test_bit(I40E_VF_STATE_RESOURCES_LOADED, &vf->vf_states)) {
2138 aq_ret = -EINVAL;
2139 goto err;
2140 }
2141
2142 len = virtchnl_struct_size(vfres, vsi_res, num_vsis);
2143 vfres = kzalloc(len, GFP_KERNEL);
2144 if (!vfres) {
2145 aq_ret = -ENOMEM;
2146 len = 0;
2147 goto err;
2148 }
2149 if (VF_IS_V11(&vf->vf_ver))
2150 vf->driver_caps = *(u32 *)msg;
2151 else
2152 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2153 VIRTCHNL_VF_OFFLOAD_RSS_REG |
2154 VIRTCHNL_VF_OFFLOAD_VLAN;
2155
2156 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2157 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
2158 vsi = pf->vsi[vf->lan_vsi_idx];
2159 if (!vsi->info.pvid)
2160 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2161
2162 if (i40e_vf_client_capable(pf, vf->vf_id) &&
2163 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RDMA)) {
2164 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RDMA;
2165 set_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states);
2166 } else {
2167 clear_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states);
2168 }
2169
2170 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2171 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2172 } else {
2173 if (test_bit(I40E_HW_CAP_RSS_AQ, pf->hw.caps) &&
2174 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2175 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2176 else
2177 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2178 }
2179
2180 if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE, pf->hw.caps)) {
2181 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2182 vfres->vf_cap_flags |=
2183 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2184 }
2185
2186 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2187 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2188
2189 if (test_bit(I40E_HW_CAP_OUTER_UDP_CSUM, pf->hw.caps) &&
2190 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2191 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2192
2193 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2194 if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
2195 dev_err(&pf->pdev->dev,
2196 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2197 vf->vf_id);
2198 aq_ret = -EINVAL;
2199 goto err;
2200 }
2201 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2202 }
2203
2204 if (test_bit(I40E_HW_CAP_WB_ON_ITR, pf->hw.caps)) {
2205 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2206 vfres->vf_cap_flags |=
2207 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2208 }
2209
2210 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2211 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2212
2213 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2214 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2215
2216 vfres->num_vsis = num_vsis;
2217 vfres->num_queue_pairs = vf->num_queue_pairs;
2218 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2219 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2220 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2221 vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2222
2223 if (vf->lan_vsi_idx) {
2224 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2225 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2226 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2227 /* VFs only use TC 0 */
2228 vfres->vsi_res[0].qset_handle
2229 = le16_to_cpu(vsi->info.qs_handle[0]);
2230 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) {
2231 spin_lock_bh(&vsi->mac_filter_hash_lock);
2232 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
2233 eth_zero_addr(vf->default_lan_addr.addr);
2234 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2235 }
2236 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2237 vf->default_lan_addr.addr);
2238 }
2239 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2240 set_bit(I40E_VF_STATE_RESOURCES_LOADED, &vf->vf_states);
2241
2242 err:
2243 /* send the response back to the VF */
2244 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2245 aq_ret, (u8 *)vfres, len);
2246
2247 kfree(vfres);
2248 return ret;
2249 }
2250
2251 /**
2252 * i40e_vc_config_promiscuous_mode_msg
2253 * @vf: pointer to the VF info
2254 * @msg: pointer to the msg buffer
2255 *
2256 * called from the VF to configure the promiscuous mode of
2257 * VF vsis
2258 **/
i40e_vc_config_promiscuous_mode_msg(struct i40e_vf * vf,u8 * msg)2259 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2260 {
2261 struct virtchnl_promisc_info *info =
2262 (struct virtchnl_promisc_info *)msg;
2263 struct i40e_pf *pf = vf->pf;
2264 bool allmulti = false;
2265 bool alluni = false;
2266 int aq_ret = 0;
2267
2268 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2269 aq_ret = -EINVAL;
2270 goto err_out;
2271 }
2272 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2273 dev_err(&pf->pdev->dev,
2274 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2275 vf->vf_id);
2276
2277 /* Lie to the VF on purpose, because this is an error we can
2278 * ignore. Unprivileged VF is not a virtual channel error.
2279 */
2280 aq_ret = 0;
2281 goto err_out;
2282 }
2283
2284 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2285 aq_ret = -EINVAL;
2286 goto err_out;
2287 }
2288
2289 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2290 aq_ret = -EINVAL;
2291 goto err_out;
2292 }
2293
2294 /* Multicast promiscuous handling*/
2295 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2296 allmulti = true;
2297
2298 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2299 alluni = true;
2300 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2301 alluni);
2302 if (aq_ret)
2303 goto err_out;
2304
2305 if (allmulti) {
2306 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2307 &vf->vf_states))
2308 dev_info(&pf->pdev->dev,
2309 "VF %d successfully set multicast promiscuous mode\n",
2310 vf->vf_id);
2311 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2312 &vf->vf_states))
2313 dev_info(&pf->pdev->dev,
2314 "VF %d successfully unset multicast promiscuous mode\n",
2315 vf->vf_id);
2316
2317 if (alluni) {
2318 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2319 &vf->vf_states))
2320 dev_info(&pf->pdev->dev,
2321 "VF %d successfully set unicast promiscuous mode\n",
2322 vf->vf_id);
2323 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2324 &vf->vf_states))
2325 dev_info(&pf->pdev->dev,
2326 "VF %d successfully unset unicast promiscuous mode\n",
2327 vf->vf_id);
2328
2329 err_out:
2330 /* send the response to the VF */
2331 return i40e_vc_send_resp_to_vf(vf,
2332 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2333 aq_ret);
2334 }
2335
2336 /**
2337 * i40e_vc_config_queues_msg
2338 * @vf: pointer to the VF info
2339 * @msg: pointer to the msg buffer
2340 *
2341 * called from the VF to configure the rx/tx
2342 * queues
2343 **/
i40e_vc_config_queues_msg(struct i40e_vf * vf,u8 * msg)2344 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2345 {
2346 struct virtchnl_vsi_queue_config_info *qci =
2347 (struct virtchnl_vsi_queue_config_info *)msg;
2348 struct virtchnl_queue_pair_info *qpi;
2349 u16 vsi_id, vsi_queue_id = 0;
2350 struct i40e_pf *pf = vf->pf;
2351 int i, j = 0, idx = 0;
2352 struct i40e_vsi *vsi;
2353 u16 num_qps_all = 0;
2354 int aq_ret = 0;
2355
2356 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2357 aq_ret = -EINVAL;
2358 goto error_param;
2359 }
2360
2361 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2362 aq_ret = -EINVAL;
2363 goto error_param;
2364 }
2365
2366 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2367 aq_ret = -EINVAL;
2368 goto error_param;
2369 }
2370
2371 if (vf->adq_enabled) {
2372 for (i = 0; i < vf->num_tc; i++)
2373 num_qps_all += vf->ch[i].num_qps;
2374 if (num_qps_all != qci->num_queue_pairs) {
2375 aq_ret = -EINVAL;
2376 goto error_param;
2377 }
2378 }
2379
2380 vsi_id = qci->vsi_id;
2381
2382 for (i = 0; i < qci->num_queue_pairs; i++) {
2383 qpi = &qci->qpair[i];
2384
2385 if (!vf->adq_enabled) {
2386 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2387 qpi->txq.queue_id)) {
2388 aq_ret = -EINVAL;
2389 goto error_param;
2390 }
2391
2392 vsi_queue_id = qpi->txq.queue_id;
2393
2394 if (qpi->txq.vsi_id != qci->vsi_id ||
2395 qpi->rxq.vsi_id != qci->vsi_id ||
2396 qpi->rxq.queue_id != vsi_queue_id) {
2397 aq_ret = -EINVAL;
2398 goto error_param;
2399 }
2400 }
2401
2402 if (vf->adq_enabled) {
2403 if (idx >= vf->num_tc) {
2404 aq_ret = -ENODEV;
2405 goto error_param;
2406 }
2407 vsi_id = vf->ch[idx].vsi_id;
2408 }
2409
2410 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2411 &qpi->rxq) ||
2412 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2413 &qpi->txq)) {
2414 aq_ret = -EINVAL;
2415 goto error_param;
2416 }
2417
2418 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2419 * VF does not know about these additional VSIs and all
2420 * it cares is about its own queues. PF configures these queues
2421 * to its appropriate VSIs based on TC mapping
2422 */
2423 if (vf->adq_enabled) {
2424 if (idx >= vf->num_tc) {
2425 aq_ret = -ENODEV;
2426 goto error_param;
2427 }
2428 if (j == (vf->ch[idx].num_qps - 1)) {
2429 idx++;
2430 j = 0; /* resetting the queue count */
2431 vsi_queue_id = 0;
2432 } else {
2433 j++;
2434 vsi_queue_id++;
2435 }
2436 }
2437 }
2438 /* set vsi num_queue_pairs in use to num configured by VF */
2439 if (!vf->adq_enabled) {
2440 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2441 qci->num_queue_pairs;
2442 } else {
2443 for (i = 0; i < vf->num_tc; i++) {
2444 vsi = pf->vsi[vf->ch[i].vsi_idx];
2445 vsi->num_queue_pairs = vf->ch[i].num_qps;
2446
2447 if (i40e_update_adq_vsi_queues(vsi, i)) {
2448 aq_ret = -EIO;
2449 goto error_param;
2450 }
2451 }
2452 }
2453
2454 error_param:
2455 /* send the response to the VF */
2456 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2457 aq_ret);
2458 }
2459
2460 /**
2461 * i40e_validate_queue_map - check queue map is valid
2462 * @vf: the VF structure pointer
2463 * @vsi_id: vsi id
2464 * @queuemap: Tx or Rx queue map
2465 *
2466 * check if Tx or Rx queue map is valid
2467 **/
i40e_validate_queue_map(struct i40e_vf * vf,u16 vsi_id,unsigned long queuemap)2468 static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2469 unsigned long queuemap)
2470 {
2471 u16 vsi_queue_id, queue_id;
2472
2473 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2474 u16 idx = vsi_queue_id / I40E_MAX_VF_VSI;
2475
2476 if (vf->adq_enabled && idx < vf->num_tc) {
2477 vsi_id = vf->ch[idx].vsi_id;
2478 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2479 } else {
2480 queue_id = vsi_queue_id;
2481 }
2482
2483 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2484 return -EINVAL;
2485 }
2486
2487 return 0;
2488 }
2489
2490 /**
2491 * i40e_vc_config_irq_map_msg
2492 * @vf: pointer to the VF info
2493 * @msg: pointer to the msg buffer
2494 *
2495 * called from the VF to configure the irq to
2496 * queue map
2497 **/
i40e_vc_config_irq_map_msg(struct i40e_vf * vf,u8 * msg)2498 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2499 {
2500 struct virtchnl_irq_map_info *irqmap_info =
2501 (struct virtchnl_irq_map_info *)msg;
2502 struct virtchnl_vector_map *map;
2503 int aq_ret = 0;
2504 u16 vsi_id;
2505 int i;
2506
2507 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2508 aq_ret = -EINVAL;
2509 goto error_param;
2510 }
2511
2512 if (irqmap_info->num_vectors >
2513 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2514 aq_ret = -EINVAL;
2515 goto error_param;
2516 }
2517
2518 for (i = 0; i < irqmap_info->num_vectors; i++) {
2519 map = &irqmap_info->vecmap[i];
2520 /* validate msg params */
2521 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2522 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2523 aq_ret = -EINVAL;
2524 goto error_param;
2525 }
2526 vsi_id = map->vsi_id;
2527
2528 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2529 aq_ret = -EINVAL;
2530 goto error_param;
2531 }
2532
2533 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2534 aq_ret = -EINVAL;
2535 goto error_param;
2536 }
2537
2538 i40e_config_irq_link_list(vf, vsi_id, map);
2539 }
2540 error_param:
2541 /* send the response to the VF */
2542 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2543 aq_ret);
2544 }
2545
2546 /**
2547 * i40e_ctrl_vf_tx_rings
2548 * @vsi: the SRIOV VSI being configured
2549 * @q_map: bit map of the queues to be enabled
2550 * @enable: start or stop the queue
2551 **/
i40e_ctrl_vf_tx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2552 static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2553 bool enable)
2554 {
2555 struct i40e_pf *pf = vsi->back;
2556 int ret = 0;
2557 u16 q_id;
2558
2559 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2560 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2561 vsi->base_queue + q_id,
2562 false /*is xdp*/, enable);
2563 if (ret)
2564 break;
2565 }
2566 return ret;
2567 }
2568
2569 /**
2570 * i40e_ctrl_vf_rx_rings
2571 * @vsi: the SRIOV VSI being configured
2572 * @q_map: bit map of the queues to be enabled
2573 * @enable: start or stop the queue
2574 **/
i40e_ctrl_vf_rx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2575 static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2576 bool enable)
2577 {
2578 struct i40e_pf *pf = vsi->back;
2579 int ret = 0;
2580 u16 q_id;
2581
2582 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2583 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2584 enable);
2585 if (ret)
2586 break;
2587 }
2588 return ret;
2589 }
2590
2591 /**
2592 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2593 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2594 *
2595 * Returns true if validation was successful, else false.
2596 */
i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select * vqs)2597 static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2598 {
2599 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2600 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2601 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2602 return false;
2603
2604 return true;
2605 }
2606
2607 /**
2608 * i40e_vc_enable_queues_msg
2609 * @vf: pointer to the VF info
2610 * @msg: pointer to the msg buffer
2611 *
2612 * called from the VF to enable all or specific queue(s)
2613 **/
i40e_vc_enable_queues_msg(struct i40e_vf * vf,u8 * msg)2614 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2615 {
2616 struct virtchnl_queue_select *vqs =
2617 (struct virtchnl_queue_select *)msg;
2618 struct i40e_pf *pf = vf->pf;
2619 int aq_ret = 0;
2620 int i;
2621
2622 if (vf->is_disabled_from_host) {
2623 aq_ret = -EPERM;
2624 dev_info(&pf->pdev->dev,
2625 "Admin has disabled VF %d, will not enable queues\n",
2626 vf->vf_id);
2627 goto error_param;
2628 }
2629
2630 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2631 aq_ret = -EINVAL;
2632 goto error_param;
2633 }
2634
2635 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2636 aq_ret = -EINVAL;
2637 goto error_param;
2638 }
2639
2640 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2641 aq_ret = -EINVAL;
2642 goto error_param;
2643 }
2644
2645 /* Use the queue bit map sent by the VF */
2646 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2647 true)) {
2648 aq_ret = -EIO;
2649 goto error_param;
2650 }
2651 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2652 true)) {
2653 aq_ret = -EIO;
2654 goto error_param;
2655 }
2656
2657 /* need to start the rings for additional ADq VSI's as well */
2658 if (vf->adq_enabled) {
2659 /* zero belongs to LAN VSI */
2660 for (i = 1; i < vf->num_tc; i++) {
2661 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2662 aq_ret = -EIO;
2663 }
2664 }
2665
2666 error_param:
2667 /* send the response to the VF */
2668 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2669 aq_ret);
2670 }
2671
2672 /**
2673 * i40e_vc_disable_queues_msg
2674 * @vf: pointer to the VF info
2675 * @msg: pointer to the msg buffer
2676 *
2677 * called from the VF to disable all or specific
2678 * queue(s)
2679 **/
i40e_vc_disable_queues_msg(struct i40e_vf * vf,u8 * msg)2680 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2681 {
2682 struct virtchnl_queue_select *vqs =
2683 (struct virtchnl_queue_select *)msg;
2684 struct i40e_pf *pf = vf->pf;
2685 int aq_ret = 0;
2686
2687 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2688 aq_ret = -EINVAL;
2689 goto error_param;
2690 }
2691
2692 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2693 aq_ret = -EINVAL;
2694 goto error_param;
2695 }
2696
2697 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2698 aq_ret = -EINVAL;
2699 goto error_param;
2700 }
2701
2702 /* Use the queue bit map sent by the VF */
2703 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2704 false)) {
2705 aq_ret = -EIO;
2706 goto error_param;
2707 }
2708 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2709 false)) {
2710 aq_ret = -EIO;
2711 goto error_param;
2712 }
2713 error_param:
2714 /* send the response to the VF */
2715 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2716 aq_ret);
2717 }
2718
2719 /**
2720 * i40e_check_enough_queue - find big enough queue number
2721 * @vf: pointer to the VF info
2722 * @needed: the number of items needed
2723 *
2724 * Returns the base item index of the queue, or negative for error
2725 **/
i40e_check_enough_queue(struct i40e_vf * vf,u16 needed)2726 static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2727 {
2728 unsigned int i, cur_queues, more, pool_size;
2729 struct i40e_lump_tracking *pile;
2730 struct i40e_pf *pf = vf->pf;
2731 struct i40e_vsi *vsi;
2732
2733 vsi = pf->vsi[vf->lan_vsi_idx];
2734 cur_queues = vsi->alloc_queue_pairs;
2735
2736 /* if current allocated queues are enough for need */
2737 if (cur_queues >= needed)
2738 return vsi->base_queue;
2739
2740 pile = pf->qp_pile;
2741 if (cur_queues > 0) {
2742 /* if the allocated queues are not zero
2743 * just check if there are enough queues for more
2744 * behind the allocated queues.
2745 */
2746 more = needed - cur_queues;
2747 for (i = vsi->base_queue + cur_queues;
2748 i < pile->num_entries; i++) {
2749 if (pile->list[i] & I40E_PILE_VALID_BIT)
2750 break;
2751
2752 if (more-- == 1)
2753 /* there is enough */
2754 return vsi->base_queue;
2755 }
2756 }
2757
2758 pool_size = 0;
2759 for (i = 0; i < pile->num_entries; i++) {
2760 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2761 pool_size = 0;
2762 continue;
2763 }
2764 if (needed <= ++pool_size)
2765 /* there is enough */
2766 return i;
2767 }
2768
2769 return -ENOMEM;
2770 }
2771
2772 /**
2773 * i40e_vc_request_queues_msg
2774 * @vf: pointer to the VF info
2775 * @msg: pointer to the msg buffer
2776 *
2777 * VFs get a default number of queues but can use this message to request a
2778 * different number. If the request is successful, PF will reset the VF and
2779 * return 0. If unsuccessful, PF will send message informing VF of number of
2780 * available queues and return result of sending VF a message.
2781 **/
i40e_vc_request_queues_msg(struct i40e_vf * vf,u8 * msg)2782 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2783 {
2784 struct virtchnl_vf_res_request *vfres =
2785 (struct virtchnl_vf_res_request *)msg;
2786 u16 req_pairs = vfres->num_queue_pairs;
2787 u8 cur_pairs = vf->num_queue_pairs;
2788 struct i40e_pf *pf = vf->pf;
2789
2790 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2791 return -EINVAL;
2792
2793 if (req_pairs > I40E_MAX_VF_QUEUES) {
2794 dev_err(&pf->pdev->dev,
2795 "VF %d tried to request more than %d queues.\n",
2796 vf->vf_id,
2797 I40E_MAX_VF_QUEUES);
2798 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2799 } else if (req_pairs - cur_pairs > pf->queues_left) {
2800 dev_warn(&pf->pdev->dev,
2801 "VF %d requested %d more queues, but only %d left.\n",
2802 vf->vf_id,
2803 req_pairs - cur_pairs,
2804 pf->queues_left);
2805 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2806 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2807 dev_warn(&pf->pdev->dev,
2808 "VF %d requested %d more queues, but there is not enough for it.\n",
2809 vf->vf_id,
2810 req_pairs - cur_pairs);
2811 vfres->num_queue_pairs = cur_pairs;
2812 } else {
2813 /* successful request */
2814 vf->num_req_queues = req_pairs;
2815 i40e_vc_reset_vf(vf, true);
2816 return 0;
2817 }
2818
2819 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2820 (u8 *)vfres, sizeof(*vfres));
2821 }
2822
2823 /**
2824 * i40e_vc_get_stats_msg
2825 * @vf: pointer to the VF info
2826 * @msg: pointer to the msg buffer
2827 *
2828 * called from the VF to get vsi stats
2829 **/
i40e_vc_get_stats_msg(struct i40e_vf * vf,u8 * msg)2830 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2831 {
2832 struct virtchnl_queue_select *vqs =
2833 (struct virtchnl_queue_select *)msg;
2834 struct i40e_pf *pf = vf->pf;
2835 struct i40e_eth_stats stats;
2836 int aq_ret = 0;
2837 struct i40e_vsi *vsi;
2838
2839 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2840
2841 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2842 aq_ret = -EINVAL;
2843 goto error_param;
2844 }
2845
2846 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2847 aq_ret = -EINVAL;
2848 goto error_param;
2849 }
2850
2851 vsi = pf->vsi[vf->lan_vsi_idx];
2852 if (!vsi) {
2853 aq_ret = -EINVAL;
2854 goto error_param;
2855 }
2856 i40e_update_eth_stats(vsi);
2857 stats = vsi->eth_stats;
2858
2859 error_param:
2860 /* send the response back to the VF */
2861 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2862 (u8 *)&stats, sizeof(stats));
2863 }
2864
2865 #define I40E_MAX_MACVLAN_PER_HW 3072
2866 #define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \
2867 (num_ports))
2868 /* If the VF is not trusted restrict the number of MAC/VLAN it can program
2869 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2870 */
2871 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2872 #define I40E_VC_MAX_VLAN_PER_VF 16
2873
2874 #define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \
2875 ({ typeof(vf_num) vf_num_ = (vf_num); \
2876 typeof(num_ports) num_ports_ = (num_ports); \
2877 ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \
2878 I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \
2879 I40E_VC_MAX_MAC_ADDR_PER_VF; })
2880 /**
2881 * i40e_check_vf_permission
2882 * @vf: pointer to the VF info
2883 * @al: MAC address list from virtchnl
2884 *
2885 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2886 * if any address in the list is not valid. Checks the following conditions:
2887 *
2888 * 1) broadcast and zero addresses are never valid
2889 * 2) unicast addresses are not allowed if the VMM has administratively set
2890 * the VF MAC address, unless the VF is marked as privileged.
2891 * 3) There is enough space to add all the addresses.
2892 *
2893 * Note that to guarantee consistency, it is expected this function be called
2894 * while holding the mac_filter_hash_lock, as otherwise the current number of
2895 * addresses might not be accurate.
2896 **/
i40e_check_vf_permission(struct i40e_vf * vf,struct virtchnl_ether_addr_list * al)2897 static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2898 struct virtchnl_ether_addr_list *al)
2899 {
2900 struct i40e_pf *pf = vf->pf;
2901 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2902 struct i40e_hw *hw = &pf->hw;
2903 int i, mac_add_max, mac_add_cnt = 0;
2904 bool vf_trusted;
2905
2906 vf_trusted = test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
2907
2908 for (i = 0; i < al->num_elements; i++) {
2909 struct i40e_mac_filter *f;
2910 u8 *addr = al->list[i].addr;
2911
2912 if (is_broadcast_ether_addr(addr) ||
2913 is_zero_ether_addr(addr)) {
2914 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2915 addr);
2916 return -EINVAL;
2917 }
2918
2919 /* If the host VMM administrator has set the VF MAC address
2920 * administratively via the ndo_set_vf_mac command then deny
2921 * permission to the VF to add or delete unicast MAC addresses.
2922 * Unless the VF is privileged and then it can do whatever.
2923 * The VF may request to set the MAC address filter already
2924 * assigned to it so do not return an error in that case.
2925 */
2926 if (!vf_trusted && !is_multicast_ether_addr(addr) &&
2927 vf->pf_set_mac && !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2928 dev_err(&pf->pdev->dev,
2929 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2930 return -EPERM;
2931 }
2932
2933 /*count filters that really will be added*/
2934 f = i40e_find_mac(vsi, addr);
2935 if (!f)
2936 ++mac_add_cnt;
2937 }
2938
2939 /* If this VF is not privileged, then we can't add more than a limited
2940 * number of addresses.
2941 *
2942 * If this VF is trusted, it can use more resources than untrusted.
2943 * However to ensure that every trusted VF has appropriate number of
2944 * resources, divide whole pool of resources per port and then across
2945 * all VFs.
2946 */
2947 if (!vf_trusted)
2948 mac_add_max = I40E_VC_MAX_MAC_ADDR_PER_VF;
2949 else
2950 mac_add_max = I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs, hw->num_ports);
2951
2952 /* VF can replace all its filters in one step, in this case mac_add_max
2953 * will be added as active and another mac_add_max will be in
2954 * a to-be-removed state. Account for that.
2955 */
2956 if ((i40e_count_active_filters(vsi) + mac_add_cnt) > mac_add_max ||
2957 (i40e_count_all_filters(vsi) + mac_add_cnt) > 2 * mac_add_max) {
2958 if (!vf_trusted) {
2959 dev_err(&pf->pdev->dev,
2960 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2961 return -EPERM;
2962 } else {
2963 dev_err(&pf->pdev->dev,
2964 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
2965 return -EPERM;
2966 }
2967 }
2968 return 0;
2969 }
2970
2971 /**
2972 * i40e_vc_ether_addr_type - get type of virtchnl_ether_addr
2973 * @vc_ether_addr: used to extract the type
2974 **/
2975 static u8
i40e_vc_ether_addr_type(struct virtchnl_ether_addr * vc_ether_addr)2976 i40e_vc_ether_addr_type(struct virtchnl_ether_addr *vc_ether_addr)
2977 {
2978 return vc_ether_addr->type & VIRTCHNL_ETHER_ADDR_TYPE_MASK;
2979 }
2980
2981 /**
2982 * i40e_is_vc_addr_legacy
2983 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2984 *
2985 * check if the MAC address is from an older VF
2986 **/
2987 static bool
i40e_is_vc_addr_legacy(struct virtchnl_ether_addr * vc_ether_addr)2988 i40e_is_vc_addr_legacy(struct virtchnl_ether_addr *vc_ether_addr)
2989 {
2990 return i40e_vc_ether_addr_type(vc_ether_addr) ==
2991 VIRTCHNL_ETHER_ADDR_LEGACY;
2992 }
2993
2994 /**
2995 * i40e_is_vc_addr_primary
2996 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2997 *
2998 * check if the MAC address is the VF's primary MAC
2999 * This function should only be called when the MAC address in
3000 * virtchnl_ether_addr is a valid unicast MAC
3001 **/
3002 static bool
i40e_is_vc_addr_primary(struct virtchnl_ether_addr * vc_ether_addr)3003 i40e_is_vc_addr_primary(struct virtchnl_ether_addr *vc_ether_addr)
3004 {
3005 return i40e_vc_ether_addr_type(vc_ether_addr) ==
3006 VIRTCHNL_ETHER_ADDR_PRIMARY;
3007 }
3008
3009 /**
3010 * i40e_update_vf_mac_addr
3011 * @vf: VF to update
3012 * @vc_ether_addr: structure from VIRTCHNL with MAC to add
3013 *
3014 * update the VF's cached hardware MAC if allowed
3015 **/
3016 static void
i40e_update_vf_mac_addr(struct i40e_vf * vf,struct virtchnl_ether_addr * vc_ether_addr)3017 i40e_update_vf_mac_addr(struct i40e_vf *vf,
3018 struct virtchnl_ether_addr *vc_ether_addr)
3019 {
3020 u8 *mac_addr = vc_ether_addr->addr;
3021
3022 if (!is_valid_ether_addr(mac_addr))
3023 return;
3024
3025 /* If request to add MAC filter is a primary request update its default
3026 * MAC address with the requested one. If it is a legacy request then
3027 * check if current default is empty if so update the default MAC
3028 */
3029 if (i40e_is_vc_addr_primary(vc_ether_addr)) {
3030 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3031 } else if (i40e_is_vc_addr_legacy(vc_ether_addr)) {
3032 if (is_zero_ether_addr(vf->default_lan_addr.addr))
3033 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3034 }
3035 }
3036
3037 /**
3038 * i40e_vc_add_mac_addr_msg
3039 * @vf: pointer to the VF info
3040 * @msg: pointer to the msg buffer
3041 *
3042 * add guest mac address filter
3043 **/
i40e_vc_add_mac_addr_msg(struct i40e_vf * vf,u8 * msg)3044 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3045 {
3046 struct virtchnl_ether_addr_list *al =
3047 (struct virtchnl_ether_addr_list *)msg;
3048 struct i40e_pf *pf = vf->pf;
3049 struct i40e_vsi *vsi = NULL;
3050 int ret = 0;
3051 int i;
3052
3053 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3054 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3055 ret = -EINVAL;
3056 goto error_param;
3057 }
3058
3059 vsi = pf->vsi[vf->lan_vsi_idx];
3060
3061 /* Lock once, because all function inside for loop accesses VSI's
3062 * MAC filter list which needs to be protected using same lock.
3063 */
3064 spin_lock_bh(&vsi->mac_filter_hash_lock);
3065
3066 ret = i40e_check_vf_permission(vf, al);
3067 if (ret) {
3068 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3069 goto error_param;
3070 }
3071
3072 /* add new addresses to the list */
3073 for (i = 0; i < al->num_elements; i++) {
3074 struct i40e_mac_filter *f;
3075
3076 f = i40e_find_mac(vsi, al->list[i].addr);
3077 if (!f) {
3078 f = i40e_add_mac_filter(vsi, al->list[i].addr);
3079
3080 if (!f) {
3081 dev_err(&pf->pdev->dev,
3082 "Unable to add MAC filter %pM for VF %d\n",
3083 al->list[i].addr, vf->vf_id);
3084 ret = -EINVAL;
3085 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3086 goto error_param;
3087 }
3088 }
3089 i40e_update_vf_mac_addr(vf, &al->list[i]);
3090 }
3091 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3092
3093 /* program the updated filter list */
3094 ret = i40e_sync_vsi_filters(vsi);
3095 if (ret)
3096 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3097 vf->vf_id, ret);
3098
3099 error_param:
3100 /* send the response to the VF */
3101 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
3102 ret, NULL, 0);
3103 }
3104
3105 /**
3106 * i40e_vc_del_mac_addr_msg
3107 * @vf: pointer to the VF info
3108 * @msg: pointer to the msg buffer
3109 *
3110 * remove guest mac address filter
3111 **/
i40e_vc_del_mac_addr_msg(struct i40e_vf * vf,u8 * msg)3112 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3113 {
3114 struct virtchnl_ether_addr_list *al =
3115 (struct virtchnl_ether_addr_list *)msg;
3116 bool was_unimac_deleted = false;
3117 struct i40e_pf *pf = vf->pf;
3118 struct i40e_vsi *vsi = NULL;
3119 int ret = 0;
3120 int i;
3121
3122 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3123 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3124 ret = -EINVAL;
3125 goto error_param;
3126 }
3127
3128 for (i = 0; i < al->num_elements; i++) {
3129 if (is_broadcast_ether_addr(al->list[i].addr) ||
3130 is_zero_ether_addr(al->list[i].addr)) {
3131 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
3132 al->list[i].addr, vf->vf_id);
3133 ret = -EINVAL;
3134 goto error_param;
3135 }
3136 }
3137 vsi = pf->vsi[vf->lan_vsi_idx];
3138
3139 spin_lock_bh(&vsi->mac_filter_hash_lock);
3140 /* delete addresses from the list */
3141 for (i = 0; i < al->num_elements; i++) {
3142 const u8 *addr = al->list[i].addr;
3143
3144 /* Allow to delete VF primary MAC only if it was not set
3145 * administratively by PF.
3146 */
3147 if (ether_addr_equal(addr, vf->default_lan_addr.addr)) {
3148 if (!vf->pf_set_mac)
3149 was_unimac_deleted = true;
3150 else
3151 continue;
3152 }
3153
3154 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
3155 ret = -EINVAL;
3156 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3157 goto error_param;
3158 }
3159 }
3160
3161 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3162
3163 if (was_unimac_deleted)
3164 eth_zero_addr(vf->default_lan_addr.addr);
3165
3166 /* program the updated filter list */
3167 ret = i40e_sync_vsi_filters(vsi);
3168 if (ret)
3169 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3170 vf->vf_id, ret);
3171
3172 if (vf->trusted && was_unimac_deleted) {
3173 struct i40e_mac_filter *f;
3174 struct hlist_node *h;
3175 u8 *macaddr = NULL;
3176 int bkt;
3177
3178 /* set last unicast mac address as default */
3179 spin_lock_bh(&vsi->mac_filter_hash_lock);
3180 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3181 if (is_valid_ether_addr(f->macaddr))
3182 macaddr = f->macaddr;
3183 }
3184 if (macaddr)
3185 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
3186 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3187 }
3188 error_param:
3189 /* send the response to the VF */
3190 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3191 }
3192
3193 /**
3194 * i40e_vc_add_vlan_msg
3195 * @vf: pointer to the VF info
3196 * @msg: pointer to the msg buffer
3197 *
3198 * program guest vlan id
3199 **/
i40e_vc_add_vlan_msg(struct i40e_vf * vf,u8 * msg)3200 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3201 {
3202 struct virtchnl_vlan_filter_list *vfl =
3203 (struct virtchnl_vlan_filter_list *)msg;
3204 struct i40e_pf *pf = vf->pf;
3205 struct i40e_vsi *vsi = NULL;
3206 int aq_ret = 0;
3207 int i;
3208
3209 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3210 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3211 dev_err(&pf->pdev->dev,
3212 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3213 goto error_param;
3214 }
3215 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3216 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3217 aq_ret = -EINVAL;
3218 goto error_param;
3219 }
3220
3221 for (i = 0; i < vfl->num_elements; i++) {
3222 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3223 aq_ret = -EINVAL;
3224 dev_err(&pf->pdev->dev,
3225 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3226 goto error_param;
3227 }
3228 }
3229 vsi = pf->vsi[vf->lan_vsi_idx];
3230 if (vsi->info.pvid) {
3231 aq_ret = -EINVAL;
3232 goto error_param;
3233 }
3234
3235 i40e_vlan_stripping_enable(vsi);
3236 for (i = 0; i < vfl->num_elements; i++) {
3237 /* add new VLAN filter */
3238 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3239 if (!ret)
3240 vf->num_vlan++;
3241
3242 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3243 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3244 true,
3245 vfl->vlan_id[i],
3246 NULL);
3247 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3248 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3249 true,
3250 vfl->vlan_id[i],
3251 NULL);
3252
3253 if (ret)
3254 dev_err(&pf->pdev->dev,
3255 "Unable to add VLAN filter %d for VF %d, error %d\n",
3256 vfl->vlan_id[i], vf->vf_id, ret);
3257 }
3258
3259 error_param:
3260 /* send the response to the VF */
3261 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3262 }
3263
3264 /**
3265 * i40e_vc_remove_vlan_msg
3266 * @vf: pointer to the VF info
3267 * @msg: pointer to the msg buffer
3268 *
3269 * remove programmed guest vlan id
3270 **/
i40e_vc_remove_vlan_msg(struct i40e_vf * vf,u8 * msg)3271 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3272 {
3273 struct virtchnl_vlan_filter_list *vfl =
3274 (struct virtchnl_vlan_filter_list *)msg;
3275 struct i40e_pf *pf = vf->pf;
3276 struct i40e_vsi *vsi = NULL;
3277 int aq_ret = 0;
3278 int i;
3279
3280 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3281 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3282 aq_ret = -EINVAL;
3283 goto error_param;
3284 }
3285
3286 for (i = 0; i < vfl->num_elements; i++) {
3287 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3288 aq_ret = -EINVAL;
3289 goto error_param;
3290 }
3291 }
3292
3293 vsi = pf->vsi[vf->lan_vsi_idx];
3294 if (vsi->info.pvid) {
3295 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3296 aq_ret = -EINVAL;
3297 goto error_param;
3298 }
3299
3300 for (i = 0; i < vfl->num_elements; i++) {
3301 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3302 vf->num_vlan--;
3303
3304 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3305 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3306 false,
3307 vfl->vlan_id[i],
3308 NULL);
3309 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3310 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3311 false,
3312 vfl->vlan_id[i],
3313 NULL);
3314 }
3315
3316 error_param:
3317 /* send the response to the VF */
3318 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3319 }
3320
3321 /**
3322 * i40e_vc_rdma_msg
3323 * @vf: pointer to the VF info
3324 * @msg: pointer to the msg buffer
3325 * @msglen: msg length
3326 *
3327 * called from the VF for the iwarp msgs
3328 **/
i40e_vc_rdma_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)3329 static int i40e_vc_rdma_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3330 {
3331 struct i40e_pf *pf = vf->pf;
3332 struct i40e_vsi *main_vsi;
3333 int aq_ret = 0;
3334 int abs_vf_id;
3335
3336 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3337 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3338 aq_ret = -EINVAL;
3339 goto error_param;
3340 }
3341
3342 main_vsi = i40e_pf_get_main_vsi(pf);
3343 abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3344 i40e_notify_client_of_vf_msg(main_vsi, abs_vf_id, msg, msglen);
3345
3346 error_param:
3347 /* send the response to the VF */
3348 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_RDMA,
3349 aq_ret);
3350 }
3351
3352 /**
3353 * i40e_vc_rdma_qvmap_msg
3354 * @vf: pointer to the VF info
3355 * @msg: pointer to the msg buffer
3356 * @config: config qvmap or release it
3357 *
3358 * called from the VF for the iwarp msgs
3359 **/
i40e_vc_rdma_qvmap_msg(struct i40e_vf * vf,u8 * msg,bool config)3360 static int i40e_vc_rdma_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3361 {
3362 struct virtchnl_rdma_qvlist_info *qvlist_info =
3363 (struct virtchnl_rdma_qvlist_info *)msg;
3364 int aq_ret = 0;
3365
3366 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3367 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3368 aq_ret = -EINVAL;
3369 goto error_param;
3370 }
3371
3372 if (config) {
3373 if (i40e_config_rdma_qvlist(vf, qvlist_info))
3374 aq_ret = -EINVAL;
3375 } else {
3376 i40e_release_rdma_qvlist(vf);
3377 }
3378
3379 error_param:
3380 /* send the response to the VF */
3381 return i40e_vc_send_resp_to_vf(vf,
3382 config ? VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP :
3383 VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP,
3384 aq_ret);
3385 }
3386
3387 /**
3388 * i40e_vc_config_rss_key
3389 * @vf: pointer to the VF info
3390 * @msg: pointer to the msg buffer
3391 *
3392 * Configure the VF's RSS key
3393 **/
i40e_vc_config_rss_key(struct i40e_vf * vf,u8 * msg)3394 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3395 {
3396 struct virtchnl_rss_key *vrk =
3397 (struct virtchnl_rss_key *)msg;
3398 struct i40e_pf *pf = vf->pf;
3399 struct i40e_vsi *vsi = NULL;
3400 int aq_ret = 0;
3401
3402 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3403 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3404 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3405 aq_ret = -EINVAL;
3406 goto err;
3407 }
3408
3409 vsi = pf->vsi[vf->lan_vsi_idx];
3410 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3411 err:
3412 /* send the response to the VF */
3413 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3414 aq_ret);
3415 }
3416
3417 /**
3418 * i40e_vc_config_rss_lut
3419 * @vf: pointer to the VF info
3420 * @msg: pointer to the msg buffer
3421 *
3422 * Configure the VF's RSS LUT
3423 **/
i40e_vc_config_rss_lut(struct i40e_vf * vf,u8 * msg)3424 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3425 {
3426 struct virtchnl_rss_lut *vrl =
3427 (struct virtchnl_rss_lut *)msg;
3428 struct i40e_pf *pf = vf->pf;
3429 struct i40e_vsi *vsi = NULL;
3430 int aq_ret = 0;
3431 u16 i;
3432
3433 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3434 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3435 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3436 aq_ret = -EINVAL;
3437 goto err;
3438 }
3439
3440 for (i = 0; i < vrl->lut_entries; i++)
3441 if (vrl->lut[i] >= vf->num_queue_pairs) {
3442 aq_ret = -EINVAL;
3443 goto err;
3444 }
3445
3446 vsi = pf->vsi[vf->lan_vsi_idx];
3447 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3448 /* send the response to the VF */
3449 err:
3450 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3451 aq_ret);
3452 }
3453
3454 /**
3455 * i40e_vc_get_rss_hashcfg
3456 * @vf: pointer to the VF info
3457 * @msg: pointer to the msg buffer
3458 *
3459 * Return the RSS Hash configuration bits allowed by the hardware
3460 **/
i40e_vc_get_rss_hashcfg(struct i40e_vf * vf,u8 * msg)3461 static int i40e_vc_get_rss_hashcfg(struct i40e_vf *vf, u8 *msg)
3462 {
3463 struct virtchnl_rss_hashcfg *vrh = NULL;
3464 struct i40e_pf *pf = vf->pf;
3465 int aq_ret = 0;
3466 int len = 0;
3467
3468 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3469 aq_ret = -EINVAL;
3470 goto err;
3471 }
3472 len = sizeof(struct virtchnl_rss_hashcfg);
3473
3474 vrh = kzalloc(len, GFP_KERNEL);
3475 if (!vrh) {
3476 aq_ret = -ENOMEM;
3477 len = 0;
3478 goto err;
3479 }
3480 vrh->hashcfg = i40e_pf_get_default_rss_hashcfg(pf);
3481 err:
3482 /* send the response back to the VF */
3483 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HASHCFG_CAPS,
3484 aq_ret, (u8 *)vrh, len);
3485 kfree(vrh);
3486 return aq_ret;
3487 }
3488
3489 /**
3490 * i40e_vc_set_rss_hashcfg
3491 * @vf: pointer to the VF info
3492 * @msg: pointer to the msg buffer
3493 *
3494 * Set the RSS Hash configuration bits for the VF
3495 **/
i40e_vc_set_rss_hashcfg(struct i40e_vf * vf,u8 * msg)3496 static int i40e_vc_set_rss_hashcfg(struct i40e_vf *vf, u8 *msg)
3497 {
3498 struct virtchnl_rss_hashcfg *vrh =
3499 (struct virtchnl_rss_hashcfg *)msg;
3500 struct i40e_pf *pf = vf->pf;
3501 struct i40e_hw *hw = &pf->hw;
3502 int aq_ret = 0;
3503
3504 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3505 aq_ret = -EINVAL;
3506 goto err;
3507 }
3508 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id),
3509 (u32)vrh->hashcfg);
3510 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3511 (u32)(vrh->hashcfg >> 32));
3512
3513 /* send the response to the VF */
3514 err:
3515 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HASHCFG, aq_ret);
3516 }
3517
3518 /**
3519 * i40e_vc_enable_vlan_stripping
3520 * @vf: pointer to the VF info
3521 * @msg: pointer to the msg buffer
3522 *
3523 * Enable vlan header stripping for the VF
3524 **/
i40e_vc_enable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3525 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3526 {
3527 struct i40e_vsi *vsi;
3528 int aq_ret = 0;
3529
3530 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3531 aq_ret = -EINVAL;
3532 goto err;
3533 }
3534
3535 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3536 i40e_vlan_stripping_enable(vsi);
3537
3538 /* send the response to the VF */
3539 err:
3540 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3541 aq_ret);
3542 }
3543
3544 /**
3545 * i40e_vc_disable_vlan_stripping
3546 * @vf: pointer to the VF info
3547 * @msg: pointer to the msg buffer
3548 *
3549 * Disable vlan header stripping for the VF
3550 **/
i40e_vc_disable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3551 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3552 {
3553 struct i40e_vsi *vsi;
3554 int aq_ret = 0;
3555
3556 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3557 aq_ret = -EINVAL;
3558 goto err;
3559 }
3560
3561 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3562 i40e_vlan_stripping_disable(vsi);
3563
3564 /* send the response to the VF */
3565 err:
3566 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3567 aq_ret);
3568 }
3569
3570 /**
3571 * i40e_validate_cloud_filter
3572 * @vf: pointer to VF structure
3573 * @tc_filter: pointer to filter requested
3574 *
3575 * This function validates cloud filter programmed as TC filter for ADq
3576 **/
i40e_validate_cloud_filter(struct i40e_vf * vf,struct virtchnl_filter * tc_filter)3577 static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3578 struct virtchnl_filter *tc_filter)
3579 {
3580 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3581 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3582 struct i40e_pf *pf = vf->pf;
3583 struct i40e_vsi *vsi = NULL;
3584 struct i40e_mac_filter *f;
3585 struct hlist_node *h;
3586 bool found = false;
3587 int bkt;
3588
3589 if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) {
3590 dev_info(&pf->pdev->dev,
3591 "VF %d: ADQ doesn't support this action (%d)\n",
3592 vf->vf_id, tc_filter->action);
3593 goto err;
3594 }
3595
3596 /* action_meta is TC number here to which the filter is applied */
3597 if (!tc_filter->action_meta ||
3598 tc_filter->action_meta >= vf->num_tc) {
3599 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3600 vf->vf_id, tc_filter->action_meta);
3601 goto err;
3602 }
3603
3604 /* Check filter if it's programmed for advanced mode or basic mode.
3605 * There are two ADq modes (for VF only),
3606 * 1. Basic mode: intended to allow as many filter options as possible
3607 * to be added to a VF in Non-trusted mode. Main goal is
3608 * to add filters to its own MAC and VLAN id.
3609 * 2. Advanced mode: is for allowing filters to be applied other than
3610 * its own MAC or VLAN. This mode requires the VF to be
3611 * Trusted.
3612 */
3613 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3614 vsi = pf->vsi[vf->lan_vsi_idx];
3615 f = i40e_find_mac(vsi, data.dst_mac);
3616
3617 if (!f) {
3618 dev_info(&pf->pdev->dev,
3619 "Destination MAC %pM doesn't belong to VF %d\n",
3620 data.dst_mac, vf->vf_id);
3621 goto err;
3622 }
3623
3624 if (mask.vlan_id) {
3625 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3626 hlist) {
3627 if (f->vlan == ntohs(data.vlan_id)) {
3628 found = true;
3629 break;
3630 }
3631 }
3632 if (!found) {
3633 dev_info(&pf->pdev->dev,
3634 "VF %d doesn't have any VLAN id %u\n",
3635 vf->vf_id, ntohs(data.vlan_id));
3636 goto err;
3637 }
3638 }
3639 } else {
3640 /* Check if VF is trusted */
3641 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3642 dev_err(&pf->pdev->dev,
3643 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3644 vf->vf_id);
3645 return -EIO;
3646 }
3647 }
3648
3649 if (mask.dst_mac[0] & data.dst_mac[0]) {
3650 if (is_broadcast_ether_addr(data.dst_mac) ||
3651 is_zero_ether_addr(data.dst_mac)) {
3652 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3653 vf->vf_id, data.dst_mac);
3654 goto err;
3655 }
3656 }
3657
3658 if (mask.src_mac[0] & data.src_mac[0]) {
3659 if (is_broadcast_ether_addr(data.src_mac) ||
3660 is_zero_ether_addr(data.src_mac)) {
3661 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3662 vf->vf_id, data.src_mac);
3663 goto err;
3664 }
3665 }
3666
3667 if (mask.dst_port & data.dst_port) {
3668 if (!data.dst_port) {
3669 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3670 vf->vf_id);
3671 goto err;
3672 }
3673 }
3674
3675 if (mask.src_port & data.src_port) {
3676 if (!data.src_port) {
3677 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3678 vf->vf_id);
3679 goto err;
3680 }
3681 }
3682
3683 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3684 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3685 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3686 vf->vf_id);
3687 goto err;
3688 }
3689
3690 if (mask.vlan_id & data.vlan_id) {
3691 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3692 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3693 vf->vf_id);
3694 goto err;
3695 }
3696 }
3697
3698 return 0;
3699 err:
3700 return -EIO;
3701 }
3702
3703 /**
3704 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3705 * @vf: pointer to the VF info
3706 * @seid: seid of the vsi it is searching for
3707 **/
i40e_find_vsi_from_seid(struct i40e_vf * vf,u16 seid)3708 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3709 {
3710 struct i40e_pf *pf = vf->pf;
3711 struct i40e_vsi *vsi = NULL;
3712 int i;
3713
3714 for (i = 0; i < vf->num_tc ; i++) {
3715 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3716 if (vsi && vsi->seid == seid)
3717 return vsi;
3718 }
3719 return NULL;
3720 }
3721
3722 /**
3723 * i40e_del_all_cloud_filters
3724 * @vf: pointer to the VF info
3725 *
3726 * This function deletes all cloud filters
3727 **/
i40e_del_all_cloud_filters(struct i40e_vf * vf)3728 static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3729 {
3730 struct i40e_cloud_filter *cfilter = NULL;
3731 struct i40e_pf *pf = vf->pf;
3732 struct i40e_vsi *vsi = NULL;
3733 struct hlist_node *node;
3734 int ret;
3735
3736 hlist_for_each_entry_safe(cfilter, node,
3737 &vf->cloud_filter_list, cloud_node) {
3738 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3739
3740 if (!vsi) {
3741 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3742 vf->vf_id, cfilter->seid);
3743 continue;
3744 }
3745
3746 if (cfilter->dst_port)
3747 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3748 false);
3749 else
3750 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3751 if (ret)
3752 dev_err(&pf->pdev->dev,
3753 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3754 vf->vf_id, ERR_PTR(ret),
3755 libie_aq_str(pf->hw.aq.asq_last_status));
3756
3757 hlist_del(&cfilter->cloud_node);
3758 kfree(cfilter);
3759 vf->num_cloud_filters--;
3760 }
3761 }
3762
3763 /**
3764 * i40e_vc_del_cloud_filter
3765 * @vf: pointer to the VF info
3766 * @msg: pointer to the msg buffer
3767 *
3768 * This function deletes a cloud filter programmed as TC filter for ADq
3769 **/
i40e_vc_del_cloud_filter(struct i40e_vf * vf,u8 * msg)3770 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3771 {
3772 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3773 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3774 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3775 struct i40e_cloud_filter cfilter, *cf = NULL;
3776 struct i40e_pf *pf = vf->pf;
3777 struct i40e_vsi *vsi = NULL;
3778 struct hlist_node *node;
3779 int aq_ret = 0;
3780 int i, ret;
3781
3782 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3783 aq_ret = -EINVAL;
3784 goto err;
3785 }
3786
3787 if (!vf->adq_enabled) {
3788 dev_info(&pf->pdev->dev,
3789 "VF %d: ADq not enabled, can't apply cloud filter\n",
3790 vf->vf_id);
3791 aq_ret = -EINVAL;
3792 goto err;
3793 }
3794
3795 if (i40e_validate_cloud_filter(vf, vcf)) {
3796 dev_info(&pf->pdev->dev,
3797 "VF %d: Invalid input, can't apply cloud filter\n",
3798 vf->vf_id);
3799 aq_ret = -EINVAL;
3800 goto err;
3801 }
3802
3803 memset(&cfilter, 0, sizeof(cfilter));
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 /* Deleting TC filter */
3849 if (tcf.dst_port)
3850 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3851 else
3852 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3853 if (ret) {
3854 dev_err(&pf->pdev->dev,
3855 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3856 vf->vf_id, ERR_PTR(ret),
3857 libie_aq_str(pf->hw.aq.asq_last_status));
3858 goto err;
3859 }
3860
3861 hlist_for_each_entry_safe(cf, node,
3862 &vf->cloud_filter_list, cloud_node) {
3863 if (cf->seid != cfilter.seid)
3864 continue;
3865 if (mask.dst_port)
3866 if (cfilter.dst_port != cf->dst_port)
3867 continue;
3868 if (mask.dst_mac[0])
3869 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3870 continue;
3871 /* for ipv4 data to be valid, only first byte of mask is set */
3872 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3873 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3874 ARRAY_SIZE(tcf.dst_ip)))
3875 continue;
3876 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3877 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3878 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3879 sizeof(cfilter.ip.v6.src_ip6)))
3880 continue;
3881 if (mask.vlan_id)
3882 if (cfilter.vlan_id != cf->vlan_id)
3883 continue;
3884
3885 hlist_del(&cf->cloud_node);
3886 kfree(cf);
3887 vf->num_cloud_filters--;
3888 }
3889
3890 err:
3891 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3892 aq_ret);
3893 }
3894
3895 #define I40E_MAX_VF_CLOUD_FILTER 0xFF00
3896
3897 /**
3898 * i40e_vc_add_cloud_filter
3899 * @vf: pointer to the VF info
3900 * @msg: pointer to the msg buffer
3901 *
3902 * This function adds a cloud filter programmed as TC filter for ADq
3903 **/
i40e_vc_add_cloud_filter(struct i40e_vf * vf,u8 * msg)3904 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3905 {
3906 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3907 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3908 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3909 struct i40e_cloud_filter *cfilter = NULL;
3910 struct i40e_pf *pf = vf->pf;
3911 struct i40e_vsi *vsi = NULL;
3912 int aq_ret = 0;
3913 int i;
3914
3915 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3916 aq_ret = -EINVAL;
3917 goto err_out;
3918 }
3919
3920 if (!vf->adq_enabled) {
3921 dev_info(&pf->pdev->dev,
3922 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3923 vf->vf_id);
3924 aq_ret = -EINVAL;
3925 goto err_out;
3926 }
3927
3928 if (i40e_validate_cloud_filter(vf, vcf)) {
3929 dev_info(&pf->pdev->dev,
3930 "VF %d: Invalid input/s, can't apply cloud filter\n",
3931 vf->vf_id);
3932 aq_ret = -EINVAL;
3933 goto err_out;
3934 }
3935
3936 if (vf->num_cloud_filters >= I40E_MAX_VF_CLOUD_FILTER) {
3937 dev_warn(&pf->pdev->dev,
3938 "VF %d: Max number of filters reached, can't apply cloud filter\n",
3939 vf->vf_id);
3940 aq_ret = -ENOSPC;
3941 goto err_out;
3942 }
3943
3944 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3945 if (!cfilter) {
3946 aq_ret = -ENOMEM;
3947 goto err_out;
3948 }
3949
3950 /* parse destination mac address */
3951 for (i = 0; i < ETH_ALEN; i++)
3952 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3953
3954 /* parse source mac address */
3955 for (i = 0; i < ETH_ALEN; i++)
3956 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3957
3958 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3959 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3960 cfilter->src_port = mask.src_port & tcf.src_port;
3961
3962 switch (vcf->flow_type) {
3963 case VIRTCHNL_TCP_V4_FLOW:
3964 cfilter->n_proto = ETH_P_IP;
3965 if (mask.dst_ip[0] & tcf.dst_ip[0])
3966 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3967 ARRAY_SIZE(tcf.dst_ip));
3968 else if (mask.src_ip[0] & tcf.dst_ip[0])
3969 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3970 ARRAY_SIZE(tcf.dst_ip));
3971 break;
3972 case VIRTCHNL_TCP_V6_FLOW:
3973 cfilter->n_proto = ETH_P_IPV6;
3974 if (mask.dst_ip[3] & tcf.dst_ip[3])
3975 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3976 sizeof(cfilter->ip.v6.dst_ip6));
3977 if (mask.src_ip[3] & tcf.src_ip[3])
3978 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3979 sizeof(cfilter->ip.v6.src_ip6));
3980 break;
3981 default:
3982 /* TC filter can be configured based on different combinations
3983 * and in this case IP is not a part of filter config
3984 */
3985 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3986 vf->vf_id);
3987 }
3988
3989 /* get the VSI to which the TC belongs to */
3990 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3991 cfilter->seid = vsi->seid;
3992 cfilter->flags = vcf->field_flags;
3993
3994 /* Adding cloud filter programmed as TC filter */
3995 if (tcf.dst_port)
3996 aq_ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3997 else
3998 aq_ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3999 if (aq_ret) {
4000 dev_err(&pf->pdev->dev,
4001 "VF %d: Failed to add cloud filter, err %pe aq_err %s\n",
4002 vf->vf_id, ERR_PTR(aq_ret),
4003 libie_aq_str(pf->hw.aq.asq_last_status));
4004 goto err_free;
4005 }
4006
4007 INIT_HLIST_NODE(&cfilter->cloud_node);
4008 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
4009 /* release the pointer passing it to the collection */
4010 cfilter = NULL;
4011 vf->num_cloud_filters++;
4012 err_free:
4013 kfree(cfilter);
4014 err_out:
4015 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
4016 aq_ret);
4017 }
4018
4019 /**
4020 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
4021 * @vf: pointer to the VF info
4022 * @msg: pointer to the msg buffer
4023 **/
i40e_vc_add_qch_msg(struct i40e_vf * vf,u8 * msg)4024 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
4025 {
4026 struct virtchnl_tc_info *tci =
4027 (struct virtchnl_tc_info *)msg;
4028 struct i40e_pf *pf = vf->pf;
4029 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4030 int i, adq_request_qps = 0;
4031 int aq_ret = 0;
4032 u64 speed = 0;
4033
4034 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4035 aq_ret = -EINVAL;
4036 goto err;
4037 }
4038
4039 /* ADq cannot be applied if spoof check is ON */
4040 if (vf->spoofchk) {
4041 dev_err(&pf->pdev->dev,
4042 "Spoof check is ON, turn it OFF to enable ADq\n");
4043 aq_ret = -EINVAL;
4044 goto err;
4045 }
4046
4047 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
4048 dev_err(&pf->pdev->dev,
4049 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
4050 vf->vf_id);
4051 aq_ret = -EINVAL;
4052 goto err;
4053 }
4054
4055 /* max number of traffic classes for VF currently capped at 4 */
4056 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
4057 dev_err(&pf->pdev->dev,
4058 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
4059 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
4060 aq_ret = -EINVAL;
4061 goto err;
4062 }
4063
4064 /* validate queues for each TC */
4065 for (i = 0; i < tci->num_tc; i++)
4066 if (!tci->list[i].count ||
4067 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
4068 dev_err(&pf->pdev->dev,
4069 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
4070 vf->vf_id, i, tci->list[i].count,
4071 I40E_DEFAULT_QUEUES_PER_VF);
4072 aq_ret = -EINVAL;
4073 goto err;
4074 }
4075
4076 /* need Max VF queues but already have default number of queues */
4077 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
4078
4079 if (pf->queues_left < adq_request_qps) {
4080 dev_err(&pf->pdev->dev,
4081 "No queues left to allocate to VF %d\n",
4082 vf->vf_id);
4083 aq_ret = -EINVAL;
4084 goto err;
4085 } else {
4086 /* we need to allocate max VF queues to enable ADq so as to
4087 * make sure ADq enabled VF always gets back queues when it
4088 * goes through a reset.
4089 */
4090 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
4091 }
4092
4093 /* get link speed in MB to validate rate limit */
4094 speed = i40e_vc_link_speed2mbps(ls->link_speed);
4095 if (speed == SPEED_UNKNOWN) {
4096 dev_err(&pf->pdev->dev,
4097 "Cannot detect link speed\n");
4098 aq_ret = -EINVAL;
4099 goto err;
4100 }
4101
4102 /* parse data from the queue channel info */
4103 vf->num_tc = tci->num_tc;
4104 for (i = 0; i < vf->num_tc; i++) {
4105 if (tci->list[i].max_tx_rate) {
4106 if (tci->list[i].max_tx_rate > speed) {
4107 dev_err(&pf->pdev->dev,
4108 "Invalid max tx rate %llu specified for VF %d.",
4109 tci->list[i].max_tx_rate,
4110 vf->vf_id);
4111 aq_ret = -EINVAL;
4112 goto err;
4113 } else {
4114 vf->ch[i].max_tx_rate =
4115 tci->list[i].max_tx_rate;
4116 }
4117 }
4118 vf->ch[i].num_qps = tci->list[i].count;
4119 }
4120
4121 /* set this flag only after making sure all inputs are sane */
4122 vf->adq_enabled = true;
4123
4124 /* reset the VF in order to allocate resources */
4125 i40e_vc_reset_vf(vf, true);
4126
4127 return 0;
4128
4129 /* send the response to the VF */
4130 err:
4131 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
4132 aq_ret);
4133 }
4134
4135 /**
4136 * i40e_vc_del_qch_msg
4137 * @vf: pointer to the VF info
4138 * @msg: pointer to the msg buffer
4139 **/
i40e_vc_del_qch_msg(struct i40e_vf * vf,u8 * msg)4140 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
4141 {
4142 struct i40e_pf *pf = vf->pf;
4143 int aq_ret = 0;
4144
4145 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4146 aq_ret = -EINVAL;
4147 goto err;
4148 }
4149
4150 if (vf->adq_enabled) {
4151 i40e_del_all_cloud_filters(vf);
4152 i40e_del_qch(vf);
4153 vf->adq_enabled = false;
4154 vf->num_tc = 0;
4155 dev_info(&pf->pdev->dev,
4156 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
4157 vf->vf_id);
4158 } else {
4159 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
4160 vf->vf_id);
4161 aq_ret = -EINVAL;
4162 }
4163
4164 /* reset the VF in order to allocate resources */
4165 i40e_vc_reset_vf(vf, true);
4166
4167 return 0;
4168
4169 err:
4170 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
4171 aq_ret);
4172 }
4173
4174 /**
4175 * i40e_vc_process_vf_msg
4176 * @pf: pointer to the PF structure
4177 * @vf_id: source VF id
4178 * @v_opcode: operation code
4179 * @v_retval: unused return value code
4180 * @msg: pointer to the msg buffer
4181 * @msglen: msg length
4182 *
4183 * called from the common aeq/arq handler to
4184 * process request from VF
4185 **/
i40e_vc_process_vf_msg(struct i40e_pf * pf,s16 vf_id,u32 v_opcode,u32 __always_unused v_retval,u8 * msg,u16 msglen)4186 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4187 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4188 {
4189 struct i40e_hw *hw = &pf->hw;
4190 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4191 struct i40e_vf *vf;
4192 int ret;
4193
4194 pf->vf_aq_requests++;
4195 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4196 return -EINVAL;
4197 vf = &(pf->vf[local_vf_id]);
4198
4199 /* Check if VF is disabled. */
4200 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4201 return -EINVAL;
4202
4203 /* perform basic checks on the msg */
4204 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4205
4206 if (ret) {
4207 i40e_vc_send_resp_to_vf(vf, v_opcode, -EINVAL);
4208 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4209 local_vf_id, v_opcode, msglen);
4210 return ret;
4211 }
4212
4213 switch (v_opcode) {
4214 case VIRTCHNL_OP_VERSION:
4215 ret = i40e_vc_get_version_msg(vf, msg);
4216 break;
4217 case VIRTCHNL_OP_GET_VF_RESOURCES:
4218 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4219 i40e_vc_notify_vf_link_state(vf);
4220 break;
4221 case VIRTCHNL_OP_RESET_VF:
4222 i40e_vc_reset_vf(vf, false);
4223 ret = 0;
4224 break;
4225 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4226 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4227 break;
4228 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4229 ret = i40e_vc_config_queues_msg(vf, msg);
4230 break;
4231 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4232 ret = i40e_vc_config_irq_map_msg(vf, msg);
4233 break;
4234 case VIRTCHNL_OP_ENABLE_QUEUES:
4235 ret = i40e_vc_enable_queues_msg(vf, msg);
4236 i40e_vc_notify_vf_link_state(vf);
4237 break;
4238 case VIRTCHNL_OP_DISABLE_QUEUES:
4239 ret = i40e_vc_disable_queues_msg(vf, msg);
4240 break;
4241 case VIRTCHNL_OP_ADD_ETH_ADDR:
4242 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4243 break;
4244 case VIRTCHNL_OP_DEL_ETH_ADDR:
4245 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4246 break;
4247 case VIRTCHNL_OP_ADD_VLAN:
4248 ret = i40e_vc_add_vlan_msg(vf, msg);
4249 break;
4250 case VIRTCHNL_OP_DEL_VLAN:
4251 ret = i40e_vc_remove_vlan_msg(vf, msg);
4252 break;
4253 case VIRTCHNL_OP_GET_STATS:
4254 ret = i40e_vc_get_stats_msg(vf, msg);
4255 break;
4256 case VIRTCHNL_OP_RDMA:
4257 ret = i40e_vc_rdma_msg(vf, msg, msglen);
4258 break;
4259 case VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP:
4260 ret = i40e_vc_rdma_qvmap_msg(vf, msg, true);
4261 break;
4262 case VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP:
4263 ret = i40e_vc_rdma_qvmap_msg(vf, msg, false);
4264 break;
4265 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4266 ret = i40e_vc_config_rss_key(vf, msg);
4267 break;
4268 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4269 ret = i40e_vc_config_rss_lut(vf, msg);
4270 break;
4271 case VIRTCHNL_OP_GET_RSS_HASHCFG_CAPS:
4272 ret = i40e_vc_get_rss_hashcfg(vf, msg);
4273 break;
4274 case VIRTCHNL_OP_SET_RSS_HASHCFG:
4275 ret = i40e_vc_set_rss_hashcfg(vf, msg);
4276 break;
4277 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4278 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4279 break;
4280 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4281 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4282 break;
4283 case VIRTCHNL_OP_REQUEST_QUEUES:
4284 ret = i40e_vc_request_queues_msg(vf, msg);
4285 break;
4286 case VIRTCHNL_OP_ENABLE_CHANNELS:
4287 ret = i40e_vc_add_qch_msg(vf, msg);
4288 break;
4289 case VIRTCHNL_OP_DISABLE_CHANNELS:
4290 ret = i40e_vc_del_qch_msg(vf, msg);
4291 break;
4292 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4293 ret = i40e_vc_add_cloud_filter(vf, msg);
4294 break;
4295 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4296 ret = i40e_vc_del_cloud_filter(vf, msg);
4297 break;
4298 case VIRTCHNL_OP_UNKNOWN:
4299 default:
4300 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4301 v_opcode, local_vf_id);
4302 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4303 -EOPNOTSUPP);
4304 break;
4305 }
4306
4307 return ret;
4308 }
4309
4310 /**
4311 * i40e_vc_process_vflr_event
4312 * @pf: pointer to the PF structure
4313 *
4314 * called from the vlfr irq handler to
4315 * free up VF resources and state variables
4316 **/
i40e_vc_process_vflr_event(struct i40e_pf * pf)4317 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4318 {
4319 struct i40e_hw *hw = &pf->hw;
4320 u32 reg, reg_idx, bit_idx;
4321 struct i40e_vf *vf;
4322 int vf_id;
4323
4324 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4325 return 0;
4326
4327 /* Re-enable the VFLR interrupt cause here, before looking for which
4328 * VF got reset. Otherwise, if another VF gets a reset while the
4329 * first one is being processed, that interrupt will be lost, and
4330 * that VF will be stuck in reset forever.
4331 */
4332 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4333 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4334 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4335 i40e_flush(hw);
4336
4337 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4338 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4339 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4340 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4341 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4342 vf = &pf->vf[vf_id];
4343 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4344 if (reg & BIT(bit_idx))
4345 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4346 if (!i40e_reset_vf(vf, true)) {
4347 /* At least one VF did not finish resetting, retry next time */
4348 set_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4349 }
4350 }
4351
4352 return 0;
4353 }
4354
4355 /**
4356 * i40e_validate_vf
4357 * @pf: the physical function
4358 * @vf_id: VF identifier
4359 *
4360 * Check that the VF is enabled and the VSI exists.
4361 *
4362 * Returns 0 on success, negative on failure
4363 **/
i40e_validate_vf(struct i40e_pf * pf,int vf_id)4364 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4365 {
4366 struct i40e_vsi *vsi;
4367 struct i40e_vf *vf;
4368 int ret = 0;
4369
4370 if (vf_id >= pf->num_alloc_vfs) {
4371 dev_err(&pf->pdev->dev,
4372 "Invalid VF Identifier %d\n", vf_id);
4373 ret = -EINVAL;
4374 goto err_out;
4375 }
4376 vf = &pf->vf[vf_id];
4377 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4378 if (!vsi)
4379 ret = -EINVAL;
4380 err_out:
4381 return ret;
4382 }
4383
4384 /**
4385 * i40e_check_vf_init_timeout
4386 * @vf: the virtual function
4387 *
4388 * Check that the VF's initialization was successfully done and if not
4389 * wait up to 300ms for its finish.
4390 *
4391 * Returns true when VF is initialized, false on timeout
4392 **/
i40e_check_vf_init_timeout(struct i40e_vf * vf)4393 static bool i40e_check_vf_init_timeout(struct i40e_vf *vf)
4394 {
4395 int i;
4396
4397 /* When the VF is resetting wait until it is done.
4398 * It can take up to 200 milliseconds, but wait for
4399 * up to 300 milliseconds to be safe.
4400 */
4401 for (i = 0; i < 15; i++) {
4402 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4403 return true;
4404 msleep(20);
4405 }
4406
4407 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4408 dev_err(&vf->pf->pdev->dev,
4409 "VF %d still in reset. Try again.\n", vf->vf_id);
4410 return false;
4411 }
4412
4413 return true;
4414 }
4415
4416 /**
4417 * i40e_ndo_set_vf_mac
4418 * @netdev: network interface device structure
4419 * @vf_id: VF identifier
4420 * @mac: mac address
4421 *
4422 * program VF mac address
4423 **/
i40e_ndo_set_vf_mac(struct net_device * netdev,int vf_id,u8 * mac)4424 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4425 {
4426 struct i40e_netdev_priv *np = netdev_priv(netdev);
4427 struct i40e_vsi *vsi = np->vsi;
4428 struct i40e_pf *pf = vsi->back;
4429 struct i40e_mac_filter *f;
4430 struct i40e_vf *vf;
4431 int ret = 0;
4432 struct hlist_node *h;
4433 int bkt;
4434
4435 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4436 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4437 return -EAGAIN;
4438 }
4439
4440 /* validate the request */
4441 ret = i40e_validate_vf(pf, vf_id);
4442 if (ret)
4443 goto error_param;
4444
4445 vf = &pf->vf[vf_id];
4446 if (!i40e_check_vf_init_timeout(vf)) {
4447 ret = -EAGAIN;
4448 goto error_param;
4449 }
4450 vsi = pf->vsi[vf->lan_vsi_idx];
4451
4452 if (is_multicast_ether_addr(mac)) {
4453 dev_err(&pf->pdev->dev,
4454 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4455 ret = -EINVAL;
4456 goto error_param;
4457 }
4458
4459 /* Lock once because below invoked function add/del_filter requires
4460 * mac_filter_hash_lock to be held
4461 */
4462 spin_lock_bh(&vsi->mac_filter_hash_lock);
4463
4464 /* delete the temporary mac address */
4465 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4466 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4467
4468 /* Delete all the filters for this VSI - we're going to kill it
4469 * anyway.
4470 */
4471 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4472 __i40e_del_filter(vsi, f);
4473
4474 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4475
4476 /* program mac filter */
4477 if (i40e_sync_vsi_filters(vsi)) {
4478 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4479 ret = -EIO;
4480 goto error_param;
4481 }
4482 ether_addr_copy(vf->default_lan_addr.addr, mac);
4483
4484 if (is_zero_ether_addr(mac)) {
4485 vf->pf_set_mac = false;
4486 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4487 } else {
4488 vf->pf_set_mac = true;
4489 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4490 mac, vf_id);
4491 }
4492
4493 /* Force the VF interface down so it has to bring up with new MAC
4494 * address
4495 */
4496 i40e_vc_reset_vf(vf, true);
4497 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4498
4499 error_param:
4500 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4501 return ret;
4502 }
4503
4504 /**
4505 * i40e_ndo_set_vf_port_vlan
4506 * @netdev: network interface device structure
4507 * @vf_id: VF identifier
4508 * @vlan_id: mac address
4509 * @qos: priority setting
4510 * @vlan_proto: vlan protocol
4511 *
4512 * program VF vlan id and/or qos
4513 **/
i40e_ndo_set_vf_port_vlan(struct net_device * netdev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)4514 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4515 u16 vlan_id, u8 qos, __be16 vlan_proto)
4516 {
4517 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4518 struct i40e_netdev_priv *np = netdev_priv(netdev);
4519 bool allmulti = false, alluni = false;
4520 struct i40e_pf *pf = np->vsi->back;
4521 struct i40e_vsi *vsi;
4522 struct i40e_vf *vf;
4523 int ret = 0;
4524
4525 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4526 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4527 return -EAGAIN;
4528 }
4529
4530 /* validate the request */
4531 ret = i40e_validate_vf(pf, vf_id);
4532 if (ret)
4533 goto error_pvid;
4534
4535 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4536 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4537 ret = -EINVAL;
4538 goto error_pvid;
4539 }
4540
4541 if (vlan_proto != htons(ETH_P_8021Q)) {
4542 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4543 ret = -EPROTONOSUPPORT;
4544 goto error_pvid;
4545 }
4546
4547 vf = &pf->vf[vf_id];
4548 if (!i40e_check_vf_init_timeout(vf)) {
4549 ret = -EAGAIN;
4550 goto error_pvid;
4551 }
4552 vsi = pf->vsi[vf->lan_vsi_idx];
4553
4554 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4555 /* duplicate request, so just return success */
4556 goto error_pvid;
4557
4558 i40e_vlan_stripping_enable(vsi);
4559
4560 /* Locked once because multiple functions below iterate list */
4561 spin_lock_bh(&vsi->mac_filter_hash_lock);
4562
4563 /* Check for condition where there was already a port VLAN ID
4564 * filter set and now it is being deleted by setting it to zero.
4565 * Additionally check for the condition where there was a port
4566 * VLAN but now there is a new and different port VLAN being set.
4567 * Before deleting all the old VLAN filters we must add new ones
4568 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4569 * MAC addresses deleted.
4570 */
4571 if ((!(vlan_id || qos) ||
4572 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4573 vsi->info.pvid) {
4574 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4575 if (ret) {
4576 dev_info(&vsi->back->pdev->dev,
4577 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4578 vsi->back->hw.aq.asq_last_status);
4579 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4580 goto error_pvid;
4581 }
4582 }
4583
4584 if (vsi->info.pvid) {
4585 /* remove all filters on the old VLAN */
4586 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4587 VLAN_VID_MASK));
4588 }
4589
4590 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4591
4592 /* disable promisc modes in case they were enabled */
4593 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4594 allmulti, alluni);
4595 if (ret) {
4596 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4597 goto error_pvid;
4598 }
4599
4600 if (vlan_id || qos)
4601 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4602 else
4603 i40e_vsi_remove_pvid(vsi);
4604 spin_lock_bh(&vsi->mac_filter_hash_lock);
4605
4606 if (vlan_id) {
4607 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4608 vlan_id, qos, vf_id);
4609
4610 /* add new VLAN filter for each MAC */
4611 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4612 if (ret) {
4613 dev_info(&vsi->back->pdev->dev,
4614 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4615 vsi->back->hw.aq.asq_last_status);
4616 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4617 goto error_pvid;
4618 }
4619
4620 /* remove the previously added non-VLAN MAC filters */
4621 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4622 }
4623
4624 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4625
4626 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4627 alluni = true;
4628
4629 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4630 allmulti = true;
4631
4632 /* Schedule the worker thread to take care of applying changes */
4633 i40e_service_event_schedule(vsi->back);
4634
4635 if (ret) {
4636 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4637 goto error_pvid;
4638 }
4639
4640 /* The Port VLAN needs to be saved across resets the same as the
4641 * default LAN MAC address.
4642 */
4643 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4644
4645 i40e_vc_reset_vf(vf, true);
4646 /* During reset the VF got a new VSI, so refresh a pointer. */
4647 vsi = pf->vsi[vf->lan_vsi_idx];
4648
4649 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4650 if (ret) {
4651 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4652 goto error_pvid;
4653 }
4654
4655 ret = 0;
4656
4657 error_pvid:
4658 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4659 return ret;
4660 }
4661
4662 /**
4663 * i40e_ndo_set_vf_bw
4664 * @netdev: network interface device structure
4665 * @vf_id: VF identifier
4666 * @min_tx_rate: Minimum Tx rate
4667 * @max_tx_rate: Maximum Tx rate
4668 *
4669 * configure VF Tx rate
4670 **/
i40e_ndo_set_vf_bw(struct net_device * netdev,int vf_id,int min_tx_rate,int max_tx_rate)4671 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4672 int max_tx_rate)
4673 {
4674 struct i40e_netdev_priv *np = netdev_priv(netdev);
4675 struct i40e_pf *pf = np->vsi->back;
4676 struct i40e_vsi *vsi;
4677 struct i40e_vf *vf;
4678 int ret = 0;
4679
4680 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4681 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4682 return -EAGAIN;
4683 }
4684
4685 /* validate the request */
4686 ret = i40e_validate_vf(pf, vf_id);
4687 if (ret)
4688 goto error;
4689
4690 if (min_tx_rate) {
4691 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4692 min_tx_rate, vf_id);
4693 ret = -EINVAL;
4694 goto error;
4695 }
4696
4697 vf = &pf->vf[vf_id];
4698 if (!i40e_check_vf_init_timeout(vf)) {
4699 ret = -EAGAIN;
4700 goto error;
4701 }
4702 vsi = pf->vsi[vf->lan_vsi_idx];
4703
4704 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4705 if (ret)
4706 goto error;
4707
4708 vf->tx_rate = max_tx_rate;
4709 error:
4710 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4711 return ret;
4712 }
4713
4714 /**
4715 * i40e_ndo_get_vf_config
4716 * @netdev: network interface device structure
4717 * @vf_id: VF identifier
4718 * @ivi: VF configuration structure
4719 *
4720 * return VF configuration
4721 **/
i40e_ndo_get_vf_config(struct net_device * netdev,int vf_id,struct ifla_vf_info * ivi)4722 int i40e_ndo_get_vf_config(struct net_device *netdev,
4723 int vf_id, struct ifla_vf_info *ivi)
4724 {
4725 struct i40e_netdev_priv *np = netdev_priv(netdev);
4726 struct i40e_vsi *vsi = np->vsi;
4727 struct i40e_pf *pf = vsi->back;
4728 struct i40e_vf *vf;
4729 int ret = 0;
4730
4731 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4732 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4733 return -EAGAIN;
4734 }
4735
4736 /* validate the request */
4737 ret = i40e_validate_vf(pf, vf_id);
4738 if (ret)
4739 goto error_param;
4740
4741 vf = &pf->vf[vf_id];
4742 /* first vsi is always the LAN vsi */
4743 vsi = pf->vsi[vf->lan_vsi_idx];
4744 if (!vsi) {
4745 ret = -ENOENT;
4746 goto error_param;
4747 }
4748
4749 ivi->vf = vf_id;
4750
4751 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4752
4753 ivi->max_tx_rate = vf->tx_rate;
4754 ivi->min_tx_rate = 0;
4755 ivi->vlan = le16_get_bits(vsi->info.pvid, I40E_VLAN_MASK);
4756 ivi->qos = le16_get_bits(vsi->info.pvid, I40E_PRIORITY_MASK);
4757 if (vf->link_forced == false)
4758 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4759 else if (vf->link_up == true)
4760 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4761 else
4762 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4763 ivi->spoofchk = vf->spoofchk;
4764 ivi->trusted = vf->trusted;
4765 ret = 0;
4766
4767 error_param:
4768 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4769 return ret;
4770 }
4771
4772 /**
4773 * i40e_ndo_set_vf_link_state
4774 * @netdev: network interface device structure
4775 * @vf_id: VF identifier
4776 * @link: required link state
4777 *
4778 * Set the link state of a specified VF, regardless of physical link state
4779 **/
i40e_ndo_set_vf_link_state(struct net_device * netdev,int vf_id,int link)4780 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4781 {
4782 struct i40e_netdev_priv *np = netdev_priv(netdev);
4783 struct i40e_pf *pf = np->vsi->back;
4784 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4785 struct virtchnl_pf_event pfe;
4786 struct i40e_hw *hw = &pf->hw;
4787 struct i40e_vsi *vsi;
4788 unsigned long q_map;
4789 struct i40e_vf *vf;
4790 int abs_vf_id;
4791 int ret = 0;
4792 int tmp;
4793
4794 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4795 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4796 return -EAGAIN;
4797 }
4798
4799 /* validate the request */
4800 if (vf_id >= pf->num_alloc_vfs) {
4801 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4802 ret = -EINVAL;
4803 goto error_out;
4804 }
4805
4806 vf = &pf->vf[vf_id];
4807 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4808
4809 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4810 pfe.severity = PF_EVENT_SEVERITY_INFO;
4811
4812 switch (link) {
4813 case IFLA_VF_LINK_STATE_AUTO:
4814 vf->link_forced = false;
4815 vf->is_disabled_from_host = false;
4816 /* reset needed to reinit VF resources */
4817 i40e_vc_reset_vf(vf, true);
4818 i40e_set_vf_link_state(vf, &pfe, ls);
4819 break;
4820 case IFLA_VF_LINK_STATE_ENABLE:
4821 vf->link_forced = true;
4822 vf->link_up = true;
4823 vf->is_disabled_from_host = false;
4824 /* reset needed to reinit VF resources */
4825 i40e_vc_reset_vf(vf, true);
4826 i40e_set_vf_link_state(vf, &pfe, ls);
4827 break;
4828 case IFLA_VF_LINK_STATE_DISABLE:
4829 vf->link_forced = true;
4830 vf->link_up = false;
4831 i40e_set_vf_link_state(vf, &pfe, ls);
4832
4833 vsi = pf->vsi[vf->lan_vsi_idx];
4834 q_map = BIT(vsi->num_queue_pairs) - 1;
4835
4836 vf->is_disabled_from_host = true;
4837
4838 /* Try to stop both Tx&Rx rings even if one of the calls fails
4839 * to ensure we stop the rings even in case of errors.
4840 * If any of them returns with an error then the first
4841 * error that occurred will be returned.
4842 */
4843 tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false);
4844 ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false);
4845
4846 ret = tmp ? tmp : ret;
4847 break;
4848 default:
4849 ret = -EINVAL;
4850 goto error_out;
4851 }
4852 /* Notify the VF of its new link state */
4853 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4854 0, (u8 *)&pfe, sizeof(pfe), NULL);
4855
4856 error_out:
4857 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4858 return ret;
4859 }
4860
4861 /**
4862 * i40e_ndo_set_vf_spoofchk
4863 * @netdev: network interface device structure
4864 * @vf_id: VF identifier
4865 * @enable: flag to enable or disable feature
4866 *
4867 * Enable or disable VF spoof checking
4868 **/
i40e_ndo_set_vf_spoofchk(struct net_device * netdev,int vf_id,bool enable)4869 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4870 {
4871 struct i40e_netdev_priv *np = netdev_priv(netdev);
4872 struct i40e_vsi *vsi = np->vsi;
4873 struct i40e_pf *pf = vsi->back;
4874 struct i40e_vsi_context ctxt;
4875 struct i40e_hw *hw = &pf->hw;
4876 struct i40e_vf *vf;
4877 int ret = 0;
4878
4879 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4880 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4881 return -EAGAIN;
4882 }
4883
4884 /* validate the request */
4885 if (vf_id >= pf->num_alloc_vfs) {
4886 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4887 ret = -EINVAL;
4888 goto out;
4889 }
4890
4891 vf = &(pf->vf[vf_id]);
4892 if (!i40e_check_vf_init_timeout(vf)) {
4893 ret = -EAGAIN;
4894 goto out;
4895 }
4896
4897 if (enable == vf->spoofchk)
4898 goto out;
4899
4900 vf->spoofchk = enable;
4901 memset(&ctxt, 0, sizeof(ctxt));
4902 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4903 ctxt.pf_num = pf->hw.pf_id;
4904 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4905 if (enable)
4906 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4907 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4908 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4909 if (ret) {
4910 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4911 ret);
4912 ret = -EIO;
4913 }
4914 out:
4915 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4916 return ret;
4917 }
4918
4919 /**
4920 * i40e_ndo_set_vf_trust
4921 * @netdev: network interface device structure of the pf
4922 * @vf_id: VF identifier
4923 * @setting: trust setting
4924 *
4925 * Enable or disable VF trust setting
4926 **/
i40e_ndo_set_vf_trust(struct net_device * netdev,int vf_id,bool setting)4927 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4928 {
4929 struct i40e_netdev_priv *np = netdev_priv(netdev);
4930 struct i40e_pf *pf = np->vsi->back;
4931 struct i40e_vf *vf;
4932 int ret = 0;
4933
4934 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4935 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4936 return -EAGAIN;
4937 }
4938
4939 /* validate the request */
4940 if (vf_id >= pf->num_alloc_vfs) {
4941 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4942 ret = -EINVAL;
4943 goto out;
4944 }
4945
4946 if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
4947 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4948 ret = -EINVAL;
4949 goto out;
4950 }
4951
4952 vf = &pf->vf[vf_id];
4953
4954 if (setting == vf->trusted)
4955 goto out;
4956
4957 vf->trusted = setting;
4958
4959 /* request PF to sync mac/vlan filters for the VF */
4960 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
4961 pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
4962
4963 i40e_vc_reset_vf(vf, true);
4964 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4965 vf_id, setting ? "" : "un");
4966
4967 if (vf->adq_enabled) {
4968 if (!vf->trusted) {
4969 dev_info(&pf->pdev->dev,
4970 "VF %u no longer Trusted, deleting all cloud filters\n",
4971 vf_id);
4972 i40e_del_all_cloud_filters(vf);
4973 }
4974 }
4975
4976 out:
4977 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4978 return ret;
4979 }
4980
4981 /**
4982 * i40e_get_vf_stats - populate some stats for the VF
4983 * @netdev: the netdev of the PF
4984 * @vf_id: the host OS identifier (0-127)
4985 * @vf_stats: pointer to the OS memory to be initialized
4986 */
i40e_get_vf_stats(struct net_device * netdev,int vf_id,struct ifla_vf_stats * vf_stats)4987 int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4988 struct ifla_vf_stats *vf_stats)
4989 {
4990 struct i40e_netdev_priv *np = netdev_priv(netdev);
4991 struct i40e_pf *pf = np->vsi->back;
4992 struct i40e_eth_stats *stats;
4993 struct i40e_vsi *vsi;
4994 struct i40e_vf *vf;
4995
4996 /* validate the request */
4997 if (i40e_validate_vf(pf, vf_id))
4998 return -EINVAL;
4999
5000 vf = &pf->vf[vf_id];
5001 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
5002 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
5003 return -EBUSY;
5004 }
5005
5006 vsi = pf->vsi[vf->lan_vsi_idx];
5007 if (!vsi)
5008 return -EINVAL;
5009
5010 i40e_update_eth_stats(vsi);
5011 stats = &vsi->eth_stats;
5012
5013 memset(vf_stats, 0, sizeof(*vf_stats));
5014
5015 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
5016 stats->rx_multicast;
5017 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
5018 stats->tx_multicast;
5019 vf_stats->rx_bytes = stats->rx_bytes;
5020 vf_stats->tx_bytes = stats->tx_bytes;
5021 vf_stats->broadcast = stats->rx_broadcast;
5022 vf_stats->multicast = stats->rx_multicast;
5023 vf_stats->rx_dropped = stats->rx_discards + stats->rx_discards_other;
5024 vf_stats->tx_dropped = stats->tx_errors;
5025
5026 return 0;
5027 }
5028