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 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
452 wr32(hw, reg_idx, reg);
453 }
454
455 /* if the vf is running in polling mode and using interrupt zero,
456 * need to disable auto-mask on enabling zero interrupt for VFs.
457 */
458 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
459 (vector_id == 0)) {
460 reg = rd32(hw, I40E_GLINT_CTL);
461 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
462 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
463 wr32(hw, I40E_GLINT_CTL, reg);
464 }
465 }
466
467 irq_list_done:
468 i40e_flush(hw);
469 }
470
471 /**
472 * i40e_release_rdma_qvlist
473 * @vf: pointer to the VF.
474 *
475 **/
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 tx_ctx.qlen = info->ring_len;
657 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
658 tx_ctx.rdylist_act = 0;
659 tx_ctx.head_wb_ena = info->headwb_enabled;
660 tx_ctx.head_wb_addr = info->dma_headwb_addr;
661
662 /* clear the context in the HMC */
663 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
664 if (ret) {
665 dev_err(&pf->pdev->dev,
666 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
667 pf_queue_id, ret);
668 ret = -ENOENT;
669 goto error_context;
670 }
671
672 /* set the context in the HMC */
673 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
674 if (ret) {
675 dev_err(&pf->pdev->dev,
676 "Failed to set VF LAN Tx queue context %d error: %d\n",
677 pf_queue_id, ret);
678 ret = -ENOENT;
679 goto error_context;
680 }
681
682 /* associate this queue with the PCI VF function */
683 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
684 qtx_ctl |= FIELD_PREP(I40E_QTX_CTL_PF_INDX_MASK, hw->pf_id);
685 qtx_ctl |= FIELD_PREP(I40E_QTX_CTL_VFVM_INDX_MASK,
686 vf->vf_id + hw->func_caps.vf_base_id);
687 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
688 i40e_flush(hw);
689
690 error_context:
691 return ret;
692 }
693
694 /**
695 * i40e_config_vsi_rx_queue
696 * @vf: pointer to the VF info
697 * @vsi_id: id of VSI as provided by the FW
698 * @vsi_queue_id: vsi relative queue index
699 * @info: config. info
700 *
701 * configure rx queue
702 **/
i40e_config_vsi_rx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_rxq_info * info)703 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
704 u16 vsi_queue_id,
705 struct virtchnl_rxq_info *info)
706 {
707 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
708 struct i40e_pf *pf = vf->pf;
709 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
710 struct i40e_hw *hw = &pf->hw;
711 struct i40e_hmc_obj_rxq rx_ctx;
712 int ret = 0;
713
714 /* clear the context structure first */
715 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
716
717 /* only set the required fields */
718 rx_ctx.base = info->dma_ring_addr / 128;
719 rx_ctx.qlen = info->ring_len;
720
721 if (info->splithdr_enabled) {
722 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
723 I40E_RX_SPLIT_IP |
724 I40E_RX_SPLIT_TCP_UDP |
725 I40E_RX_SPLIT_SCTP;
726 /* header length validation */
727 if (info->hdr_size > ((2 * 1024) - 64)) {
728 ret = -EINVAL;
729 goto error_param;
730 }
731 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
732
733 /* set split mode 10b */
734 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
735 }
736
737 /* databuffer length validation */
738 if (info->databuffer_size > ((16 * 1024) - 128)) {
739 ret = -EINVAL;
740 goto error_param;
741 }
742 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
743
744 /* max pkt. length validation */
745 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
746 ret = -EINVAL;
747 goto error_param;
748 }
749 rx_ctx.rxmax = info->max_pkt_size;
750
751 /* if port VLAN is configured increase the max packet size */
752 if (vsi->info.pvid)
753 rx_ctx.rxmax += VLAN_HLEN;
754
755 /* enable 32bytes desc always */
756 rx_ctx.dsize = 1;
757
758 /* default values */
759 rx_ctx.lrxqthresh = 1;
760 rx_ctx.crcstrip = 1;
761 rx_ctx.prefena = 1;
762 rx_ctx.l2tsel = 1;
763
764 /* clear the context in the HMC */
765 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
766 if (ret) {
767 dev_err(&pf->pdev->dev,
768 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
769 pf_queue_id, ret);
770 ret = -ENOENT;
771 goto error_param;
772 }
773
774 /* set the context in the HMC */
775 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
776 if (ret) {
777 dev_err(&pf->pdev->dev,
778 "Failed to set VF LAN Rx queue context %d error: %d\n",
779 pf_queue_id, ret);
780 ret = -ENOENT;
781 goto error_param;
782 }
783
784 error_param:
785 return ret;
786 }
787
788 /**
789 * i40e_alloc_vsi_res
790 * @vf: pointer to the VF info
791 * @idx: VSI index, applies only for ADq mode, zero otherwise
792 *
793 * alloc VF vsi context & resources
794 **/
i40e_alloc_vsi_res(struct i40e_vf * vf,u8 idx)795 static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
796 {
797 struct i40e_mac_filter *f = NULL;
798 struct i40e_vsi *main_vsi, *vsi;
799 struct i40e_pf *pf = vf->pf;
800 u64 max_tx_rate = 0;
801 int ret = 0;
802
803 main_vsi = i40e_pf_get_main_vsi(pf);
804 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, main_vsi->seid, vf->vf_id);
805
806 if (!vsi) {
807 dev_err(&pf->pdev->dev,
808 "add vsi failed for VF %d, aq_err %d\n",
809 vf->vf_id, pf->hw.aq.asq_last_status);
810 ret = -ENOENT;
811 goto error_alloc_vsi_res;
812 }
813
814 if (!idx) {
815 u64 hashcfg = i40e_pf_get_default_rss_hashcfg(pf);
816 u8 broadcast[ETH_ALEN];
817
818 vf->lan_vsi_idx = vsi->idx;
819 vf->lan_vsi_id = vsi->id;
820 /* If the port VLAN has been configured and then the
821 * VF driver was removed then the VSI port VLAN
822 * configuration was destroyed. Check if there is
823 * a port VLAN and restore the VSI configuration if
824 * needed.
825 */
826 if (vf->port_vlan_id)
827 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
828
829 spin_lock_bh(&vsi->mac_filter_hash_lock);
830 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
831 f = i40e_add_mac_filter(vsi,
832 vf->default_lan_addr.addr);
833 if (!f)
834 dev_info(&pf->pdev->dev,
835 "Could not add MAC filter %pM for VF %d\n",
836 vf->default_lan_addr.addr, vf->vf_id);
837 }
838 eth_broadcast_addr(broadcast);
839 f = i40e_add_mac_filter(vsi, broadcast);
840 if (!f)
841 dev_info(&pf->pdev->dev,
842 "Could not allocate VF broadcast filter\n");
843 spin_unlock_bh(&vsi->mac_filter_hash_lock);
844 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hashcfg);
845 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id),
846 (u32)(hashcfg >> 32));
847 /* program mac filter only for VF VSI */
848 ret = i40e_sync_vsi_filters(vsi);
849 if (ret)
850 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
851 }
852
853 /* storing VSI index and id for ADq and don't apply the mac filter */
854 if (vf->adq_enabled) {
855 vf->ch[idx].vsi_idx = vsi->idx;
856 vf->ch[idx].vsi_id = vsi->id;
857 }
858
859 /* Set VF bandwidth if specified */
860 if (vf->tx_rate) {
861 max_tx_rate = vf->tx_rate;
862 } else if (vf->ch[idx].max_tx_rate) {
863 max_tx_rate = vf->ch[idx].max_tx_rate;
864 }
865
866 if (max_tx_rate) {
867 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
868 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
869 max_tx_rate, 0, NULL);
870 if (ret)
871 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
872 vf->vf_id, ret);
873 }
874
875 error_alloc_vsi_res:
876 return ret;
877 }
878
879 /**
880 * i40e_map_pf_queues_to_vsi
881 * @vf: pointer to the VF info
882 *
883 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
884 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
885 **/
i40e_map_pf_queues_to_vsi(struct i40e_vf * vf)886 static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
887 {
888 struct i40e_pf *pf = vf->pf;
889 struct i40e_hw *hw = &pf->hw;
890 u32 reg, num_tc = 1; /* VF has at least one traffic class */
891 u16 vsi_id, qps;
892 int i, j;
893
894 if (vf->adq_enabled)
895 num_tc = vf->num_tc;
896
897 for (i = 0; i < num_tc; i++) {
898 if (vf->adq_enabled) {
899 qps = vf->ch[i].num_qps;
900 vsi_id = vf->ch[i].vsi_id;
901 } else {
902 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
903 vsi_id = vf->lan_vsi_id;
904 }
905
906 for (j = 0; j < 7; j++) {
907 if (j * 2 >= qps) {
908 /* end of list */
909 reg = 0x07FF07FF;
910 } else {
911 u16 qid = i40e_vc_get_pf_queue_id(vf,
912 vsi_id,
913 j * 2);
914 reg = qid;
915 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
916 (j * 2) + 1);
917 reg |= qid << 16;
918 }
919 i40e_write_rx_ctl(hw,
920 I40E_VSILAN_QTABLE(j, vsi_id),
921 reg);
922 }
923 }
924 }
925
926 /**
927 * i40e_map_pf_to_vf_queues
928 * @vf: pointer to the VF info
929 *
930 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
931 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
932 **/
i40e_map_pf_to_vf_queues(struct i40e_vf * vf)933 static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
934 {
935 struct i40e_pf *pf = vf->pf;
936 struct i40e_hw *hw = &pf->hw;
937 u32 reg, total_qps = 0;
938 u32 qps, num_tc = 1; /* VF has at least one traffic class */
939 u16 vsi_id, qid;
940 int i, j;
941
942 if (vf->adq_enabled)
943 num_tc = vf->num_tc;
944
945 for (i = 0; i < num_tc; i++) {
946 if (vf->adq_enabled) {
947 qps = vf->ch[i].num_qps;
948 vsi_id = vf->ch[i].vsi_id;
949 } else {
950 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
951 vsi_id = vf->lan_vsi_id;
952 }
953
954 for (j = 0; j < qps; j++) {
955 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
956
957 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
958 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
959 reg);
960 total_qps++;
961 }
962 }
963 }
964
965 /**
966 * i40e_enable_vf_mappings
967 * @vf: pointer to the VF info
968 *
969 * enable VF mappings
970 **/
i40e_enable_vf_mappings(struct i40e_vf * vf)971 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
972 {
973 struct i40e_pf *pf = vf->pf;
974 struct i40e_hw *hw = &pf->hw;
975 u32 reg;
976
977 /* Tell the hardware we're using noncontiguous mapping. HW requires
978 * that VF queues be mapped using this method, even when they are
979 * contiguous in real life
980 */
981 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
982 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
983
984 /* enable VF vplan_qtable mappings */
985 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
986 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
987
988 i40e_map_pf_to_vf_queues(vf);
989 i40e_map_pf_queues_to_vsi(vf);
990
991 i40e_flush(hw);
992 }
993
994 /**
995 * i40e_disable_vf_mappings
996 * @vf: pointer to the VF info
997 *
998 * disable VF mappings
999 **/
i40e_disable_vf_mappings(struct i40e_vf * vf)1000 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
1001 {
1002 struct i40e_pf *pf = vf->pf;
1003 struct i40e_hw *hw = &pf->hw;
1004 int i;
1005
1006 /* disable qp mappings */
1007 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
1008 for (i = 0; i < I40E_MAX_VSI_QP; i++)
1009 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
1010 I40E_QUEUE_END_OF_LIST);
1011 i40e_flush(hw);
1012 }
1013
1014 /**
1015 * i40e_free_vf_res
1016 * @vf: pointer to the VF info
1017 *
1018 * free VF resources
1019 **/
i40e_free_vf_res(struct i40e_vf * vf)1020 static void i40e_free_vf_res(struct i40e_vf *vf)
1021 {
1022 struct i40e_pf *pf = vf->pf;
1023 struct i40e_hw *hw = &pf->hw;
1024 u32 reg_idx, reg;
1025 int i, j, msix_vf;
1026
1027 /* Start by disabling VF's configuration API to prevent the OS from
1028 * accessing the VF's VSI after it's freed / invalidated.
1029 */
1030 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1031
1032 /* It's possible the VF had requeuested more queues than the default so
1033 * do the accounting here when we're about to free them.
1034 */
1035 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
1036 pf->queues_left += vf->num_queue_pairs -
1037 I40E_DEFAULT_QUEUES_PER_VF;
1038 }
1039
1040 /* free vsi & disconnect it from the parent uplink */
1041 if (vf->lan_vsi_idx) {
1042 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
1043 vf->lan_vsi_idx = 0;
1044 vf->lan_vsi_id = 0;
1045 }
1046
1047 /* do the accounting and remove additional ADq VSI's */
1048 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
1049 for (j = 0; j < vf->num_tc; j++) {
1050 /* At this point VSI0 is already released so don't
1051 * release it again and only clear their values in
1052 * structure variables
1053 */
1054 if (j)
1055 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
1056 vf->ch[j].vsi_idx = 0;
1057 vf->ch[j].vsi_id = 0;
1058 }
1059 }
1060 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
1061
1062 /* disable interrupts so the VF starts in a known state */
1063 for (i = 0; i < msix_vf; i++) {
1064 /* format is same for both registers */
1065 if (0 == i)
1066 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
1067 else
1068 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
1069 (vf->vf_id))
1070 + (i - 1));
1071 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
1072 i40e_flush(hw);
1073 }
1074
1075 /* clear the irq settings */
1076 for (i = 0; i < msix_vf; i++) {
1077 /* format is same for both registers */
1078 if (0 == i)
1079 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
1080 else
1081 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
1082 (vf->vf_id))
1083 + (i - 1));
1084 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1085 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1086 wr32(hw, reg_idx, reg);
1087 i40e_flush(hw);
1088 }
1089 /* reset some of the state variables keeping track of the resources */
1090 vf->num_queue_pairs = 0;
1091 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1092 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1093 }
1094
1095 /**
1096 * i40e_alloc_vf_res
1097 * @vf: pointer to the VF info
1098 *
1099 * allocate VF resources
1100 **/
i40e_alloc_vf_res(struct i40e_vf * vf)1101 static int i40e_alloc_vf_res(struct i40e_vf *vf)
1102 {
1103 struct i40e_pf *pf = vf->pf;
1104 int total_queue_pairs = 0;
1105 int ret, idx;
1106
1107 if (vf->num_req_queues &&
1108 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1109 pf->num_vf_qps = vf->num_req_queues;
1110 else
1111 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1112
1113 /* allocate hw vsi context & associated resources */
1114 ret = i40e_alloc_vsi_res(vf, 0);
1115 if (ret)
1116 goto error_alloc;
1117 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1118
1119 /* allocate additional VSIs based on tc information for ADq */
1120 if (vf->adq_enabled) {
1121 if (pf->queues_left >=
1122 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1123 /* TC 0 always belongs to VF VSI */
1124 for (idx = 1; idx < vf->num_tc; idx++) {
1125 ret = i40e_alloc_vsi_res(vf, idx);
1126 if (ret)
1127 goto error_alloc;
1128 }
1129 /* send correct number of queues */
1130 total_queue_pairs = I40E_MAX_VF_QUEUES;
1131 } else {
1132 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1133 vf->vf_id);
1134 vf->adq_enabled = false;
1135 }
1136 }
1137
1138 /* We account for each VF to get a default number of queue pairs. If
1139 * the VF has now requested more, we need to account for that to make
1140 * certain we never request more queues than we actually have left in
1141 * HW.
1142 */
1143 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1144 pf->queues_left -=
1145 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1146
1147 if (vf->trusted)
1148 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1149 else
1150 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1151
1152 /* store the total qps number for the runtime
1153 * VF req validation
1154 */
1155 vf->num_queue_pairs = total_queue_pairs;
1156
1157 /* VF is now completely initialized */
1158 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1159
1160 error_alloc:
1161 if (ret)
1162 i40e_free_vf_res(vf);
1163
1164 return ret;
1165 }
1166
1167 #define VF_DEVICE_STATUS 0xAA
1168 #define VF_TRANS_PENDING_MASK 0x20
1169 /**
1170 * i40e_quiesce_vf_pci
1171 * @vf: pointer to the VF structure
1172 *
1173 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1174 * if the transactions never clear.
1175 **/
i40e_quiesce_vf_pci(struct i40e_vf * vf)1176 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1177 {
1178 struct i40e_pf *pf = vf->pf;
1179 struct i40e_hw *hw = &pf->hw;
1180 int vf_abs_id, i;
1181 u32 reg;
1182
1183 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1184
1185 wr32(hw, I40E_PF_PCI_CIAA,
1186 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1187 for (i = 0; i < 100; i++) {
1188 reg = rd32(hw, I40E_PF_PCI_CIAD);
1189 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1190 return 0;
1191 udelay(1);
1192 }
1193 return -EIO;
1194 }
1195
1196 /**
1197 * __i40e_getnum_vf_vsi_vlan_filters
1198 * @vsi: pointer to the vsi
1199 *
1200 * called to get the number of VLANs offloaded on this VF
1201 **/
__i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1202 static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1203 {
1204 struct i40e_mac_filter *f;
1205 u16 num_vlans = 0, bkt;
1206
1207 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1208 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1209 num_vlans++;
1210 }
1211
1212 return num_vlans;
1213 }
1214
1215 /**
1216 * i40e_getnum_vf_vsi_vlan_filters
1217 * @vsi: pointer to the vsi
1218 *
1219 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
1220 **/
i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1221 static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1222 {
1223 int num_vlans;
1224
1225 spin_lock_bh(&vsi->mac_filter_hash_lock);
1226 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1227 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1228
1229 return num_vlans;
1230 }
1231
1232 /**
1233 * i40e_get_vlan_list_sync
1234 * @vsi: pointer to the VSI
1235 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller
1236 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
1237 * This array is allocated here, but has to be freed in caller.
1238 *
1239 * Called to get number of VLANs and VLAN list present in mac_filter_hash.
1240 **/
i40e_get_vlan_list_sync(struct i40e_vsi * vsi,u16 * num_vlans,s16 ** vlan_list)1241 static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
1242 s16 **vlan_list)
1243 {
1244 struct i40e_mac_filter *f;
1245 int i = 0;
1246 int bkt;
1247
1248 spin_lock_bh(&vsi->mac_filter_hash_lock);
1249 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1250 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC);
1251 if (!(*vlan_list))
1252 goto err;
1253
1254 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1255 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1256 continue;
1257 (*vlan_list)[i++] = f->vlan;
1258 }
1259 err:
1260 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1261 }
1262
1263 /**
1264 * i40e_set_vsi_promisc
1265 * @vf: pointer to the VF struct
1266 * @seid: VSI number
1267 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
1268 * for a given VLAN
1269 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
1270 * for a given VLAN
1271 * @vl: List of VLANs - apply filter for given VLANs
1272 * @num_vlans: Number of elements in @vl
1273 **/
1274 static int
i40e_set_vsi_promisc(struct i40e_vf * vf,u16 seid,bool multi_enable,bool unicast_enable,s16 * vl,u16 num_vlans)1275 i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
1276 bool unicast_enable, s16 *vl, u16 num_vlans)
1277 {
1278 struct i40e_pf *pf = vf->pf;
1279 struct i40e_hw *hw = &pf->hw;
1280 int aq_ret, aq_tmp = 0;
1281 int i;
1282
1283 /* No VLAN to set promisc on, set on VSI */
1284 if (!num_vlans || !vl) {
1285 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid,
1286 multi_enable,
1287 NULL);
1288 if (aq_ret) {
1289 int aq_err = pf->hw.aq.asq_last_status;
1290
1291 dev_err(&pf->pdev->dev,
1292 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1293 vf->vf_id, ERR_PTR(aq_ret),
1294 libie_aq_str(aq_err));
1295
1296 return aq_ret;
1297 }
1298
1299 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid,
1300 unicast_enable,
1301 NULL, true);
1302
1303 if (aq_ret) {
1304 int aq_err = pf->hw.aq.asq_last_status;
1305
1306 dev_err(&pf->pdev->dev,
1307 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1308 vf->vf_id, ERR_PTR(aq_ret),
1309 libie_aq_str(aq_err));
1310 }
1311
1312 return aq_ret;
1313 }
1314
1315 for (i = 0; i < num_vlans; i++) {
1316 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
1317 multi_enable,
1318 vl[i], NULL);
1319 if (aq_ret) {
1320 int aq_err = pf->hw.aq.asq_last_status;
1321
1322 dev_err(&pf->pdev->dev,
1323 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1324 vf->vf_id, ERR_PTR(aq_ret),
1325 libie_aq_str(aq_err));
1326
1327 if (!aq_tmp)
1328 aq_tmp = aq_ret;
1329 }
1330
1331 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
1332 unicast_enable,
1333 vl[i], NULL);
1334 if (aq_ret) {
1335 int aq_err = pf->hw.aq.asq_last_status;
1336
1337 dev_err(&pf->pdev->dev,
1338 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1339 vf->vf_id, ERR_PTR(aq_ret),
1340 libie_aq_str(aq_err));
1341
1342 if (!aq_tmp)
1343 aq_tmp = aq_ret;
1344 }
1345 }
1346
1347 if (aq_tmp)
1348 aq_ret = aq_tmp;
1349
1350 return aq_ret;
1351 }
1352
1353 /**
1354 * i40e_config_vf_promiscuous_mode
1355 * @vf: pointer to the VF info
1356 * @vsi_id: VSI id
1357 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1358 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1359 *
1360 * Called from the VF to configure the promiscuous mode of
1361 * VF vsis and from the VF reset path to reset promiscuous mode.
1362 **/
i40e_config_vf_promiscuous_mode(struct i40e_vf * vf,u16 vsi_id,bool allmulti,bool alluni)1363 static int i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1364 u16 vsi_id,
1365 bool allmulti,
1366 bool alluni)
1367 {
1368 struct i40e_pf *pf = vf->pf;
1369 struct i40e_vsi *vsi;
1370 int aq_ret = 0;
1371 u16 num_vlans;
1372 s16 *vl;
1373
1374 vsi = i40e_find_vsi_from_id(pf, vsi_id);
1375 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1376 return -EINVAL;
1377
1378 if (vf->port_vlan_id) {
1379 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti,
1380 alluni, &vf->port_vlan_id, 1);
1381 return aq_ret;
1382 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1383 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl);
1384
1385 if (!vl)
1386 return -ENOMEM;
1387
1388 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1389 vl, num_vlans);
1390 kfree(vl);
1391 return aq_ret;
1392 }
1393
1394 /* no VLANs to set on, set on VSI */
1395 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1396 NULL, 0);
1397 return aq_ret;
1398 }
1399
1400 /**
1401 * i40e_sync_vfr_reset
1402 * @hw: pointer to hw struct
1403 * @vf_id: VF identifier
1404 *
1405 * Before trigger hardware reset, we need to know if no other process has
1406 * reserved the hardware for any reset operations. This check is done by
1407 * examining the status of the RSTAT1 register used to signal the reset.
1408 **/
i40e_sync_vfr_reset(struct i40e_hw * hw,int vf_id)1409 static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1410 {
1411 u32 reg;
1412 int i;
1413
1414 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1415 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1416 I40E_VFINT_ICR0_ADMINQ_MASK;
1417 if (reg)
1418 return 0;
1419
1420 usleep_range(100, 200);
1421 }
1422
1423 return -EAGAIN;
1424 }
1425
1426 /**
1427 * i40e_trigger_vf_reset
1428 * @vf: pointer to the VF structure
1429 * @flr: VFLR was issued or not
1430 *
1431 * Trigger hardware to start a reset for a particular VF. Expects the caller
1432 * to wait the proper amount of time to allow hardware to reset the VF before
1433 * it cleans up and restores VF functionality.
1434 **/
i40e_trigger_vf_reset(struct i40e_vf * vf,bool flr)1435 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1436 {
1437 struct i40e_pf *pf = vf->pf;
1438 struct i40e_hw *hw = &pf->hw;
1439 u32 reg, reg_idx, bit_idx;
1440 bool vf_active;
1441 u32 radq;
1442
1443 /* warn the VF */
1444 vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1445
1446 /* Disable VF's configuration API during reset. The flag is re-enabled
1447 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1448 * It's normally disabled in i40e_free_vf_res(), but it's safer
1449 * to do it earlier to give some time to finish to any VF config
1450 * functions that may still be running at this point.
1451 */
1452 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1453
1454 /* In the case of a VFLR, the HW has already reset the VF and we
1455 * just need to clean up, so don't hit the VFRTRIG register.
1456 */
1457 if (!flr) {
1458 /* Sync VFR reset before trigger next one */
1459 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1460 I40E_VFINT_ICR0_ADMINQ_MASK;
1461 if (vf_active && !radq)
1462 /* waiting for finish reset by virtual driver */
1463 if (i40e_sync_vfr_reset(hw, vf->vf_id))
1464 dev_info(&pf->pdev->dev,
1465 "Reset VF %d never finished\n",
1466 vf->vf_id);
1467
1468 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1469 * in progress state in rstat1 register.
1470 */
1471 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1472 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1473 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1474 i40e_flush(hw);
1475 }
1476 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1477 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1478 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1479 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1480 i40e_flush(hw);
1481
1482 if (i40e_quiesce_vf_pci(vf))
1483 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1484 vf->vf_id);
1485 }
1486
1487 /**
1488 * i40e_cleanup_reset_vf
1489 * @vf: pointer to the VF structure
1490 *
1491 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1492 * have verified whether the reset is finished properly, and ensure the
1493 * minimum amount of wait time has passed.
1494 **/
i40e_cleanup_reset_vf(struct i40e_vf * vf)1495 static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1496 {
1497 struct i40e_pf *pf = vf->pf;
1498 struct i40e_hw *hw = &pf->hw;
1499 u32 reg;
1500
1501 /* disable promisc modes in case they were enabled */
1502 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1503
1504 /* free VF resources to begin resetting the VSI state */
1505 i40e_free_vf_res(vf);
1506
1507 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1508 * By doing this we allow HW to access VF memory at any point. If we
1509 * did it any sooner, HW could access memory while it was being freed
1510 * in i40e_free_vf_res(), causing an IOMMU fault.
1511 *
1512 * On the other hand, this needs to be done ASAP, because the VF driver
1513 * is waiting for this to happen and may report a timeout. It's
1514 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1515 * it.
1516 */
1517 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1518 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1519 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1520
1521 /* reallocate VF resources to finish resetting the VSI state */
1522 if (!i40e_alloc_vf_res(vf)) {
1523 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1524 i40e_enable_vf_mappings(vf);
1525 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1526 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1527 /* Do not notify the client during VF init */
1528 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1529 &vf->vf_states))
1530 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1531 vf->num_vlan = 0;
1532 }
1533
1534 /* Tell the VF driver the reset is done. This needs to be done only
1535 * after VF has been fully initialized, because the VF driver may
1536 * request resources immediately after setting this flag.
1537 */
1538 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1539 }
1540
1541 /**
1542 * i40e_reset_vf
1543 * @vf: pointer to the VF structure
1544 * @flr: VFLR was issued or not
1545 *
1546 * Return: True if reset was performed successfully or if resets are disabled.
1547 * False if reset is already in progress.
1548 **/
i40e_reset_vf(struct i40e_vf * vf,bool flr)1549 bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1550 {
1551 struct i40e_pf *pf = vf->pf;
1552 struct i40e_hw *hw = &pf->hw;
1553 bool rsd = false;
1554 u32 reg;
1555 int i;
1556
1557 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1558 return true;
1559
1560 /* Bail out if VFs are disabled. */
1561 if (test_bit(__I40E_VF_DISABLE, pf->state))
1562 return true;
1563
1564 /* If VF is being reset already we don't need to continue. */
1565 if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1566 return false;
1567
1568 i40e_trigger_vf_reset(vf, flr);
1569
1570 /* poll VPGEN_VFRSTAT reg to make sure
1571 * that reset is complete
1572 */
1573 for (i = 0; i < 10; i++) {
1574 /* VF reset requires driver to first reset the VF and then
1575 * poll the status register to make sure that the reset
1576 * completed successfully. Due to internal HW FIFO flushes,
1577 * we must wait 10ms before the register will be valid.
1578 */
1579 usleep_range(10000, 20000);
1580 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1581 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1582 rsd = true;
1583 break;
1584 }
1585 }
1586
1587 if (flr)
1588 usleep_range(10000, 20000);
1589
1590 if (!rsd)
1591 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1592 vf->vf_id);
1593 usleep_range(10000, 20000);
1594
1595 /* On initial reset, we don't have any queues to disable */
1596 if (vf->lan_vsi_idx != 0)
1597 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1598
1599 i40e_cleanup_reset_vf(vf);
1600
1601 i40e_flush(hw);
1602 usleep_range(20000, 40000);
1603 clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states);
1604
1605 return true;
1606 }
1607
1608 /**
1609 * i40e_reset_all_vfs
1610 * @pf: pointer to the PF structure
1611 * @flr: VFLR was issued or not
1612 *
1613 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1614 * VF, then do all the waiting in one chunk, and finally finish restoring each
1615 * VF after the wait. This is useful during PF routines which need to reset
1616 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1617 *
1618 * Returns true if any VFs were reset, and false otherwise.
1619 **/
i40e_reset_all_vfs(struct i40e_pf * pf,bool flr)1620 bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1621 {
1622 struct i40e_hw *hw = &pf->hw;
1623 struct i40e_vf *vf;
1624 u32 reg;
1625 int i;
1626
1627 /* If we don't have any VFs, then there is nothing to reset */
1628 if (!pf->num_alloc_vfs)
1629 return false;
1630
1631 /* If VFs have been disabled, there is no need to reset */
1632 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1633 return false;
1634
1635 /* Begin reset on all VFs at once */
1636 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1637 /* If VF is being reset no need to trigger reset again */
1638 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1639 i40e_trigger_vf_reset(vf, flr);
1640 }
1641
1642 /* HW requires some time to make sure it can flush the FIFO for a VF
1643 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1644 * sequence to make sure that it has completed. We'll keep track of
1645 * the VFs using a simple iterator that increments once that VF has
1646 * finished resetting.
1647 */
1648 for (i = 0, vf = &pf->vf[0]; i < 10 && vf < &pf->vf[pf->num_alloc_vfs]; ++i) {
1649 usleep_range(10000, 20000);
1650
1651 /* Check each VF in sequence, beginning with the VF to fail
1652 * the previous check.
1653 */
1654 while (vf < &pf->vf[pf->num_alloc_vfs]) {
1655 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
1656 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1657 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1658 break;
1659 }
1660
1661 /* If the current VF has finished resetting, move on
1662 * to the next VF in sequence.
1663 */
1664 ++vf;
1665 }
1666 }
1667
1668 if (flr)
1669 usleep_range(10000, 20000);
1670
1671 /* Display a warning if at least one VF didn't manage to reset in
1672 * time, but continue on with the operation.
1673 */
1674 if (vf < &pf->vf[pf->num_alloc_vfs])
1675 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1676 vf->vf_id);
1677 usleep_range(10000, 20000);
1678
1679 /* Begin disabling all the rings associated with VFs, but do not wait
1680 * between each VF.
1681 */
1682 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1683 /* On initial reset, we don't have any queues to disable */
1684 if (vf->lan_vsi_idx == 0)
1685 continue;
1686
1687 /* If VF is reset in another thread just continue */
1688 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1689 continue;
1690
1691 i40e_vsi_stop_rings_no_wait(pf->vsi[vf->lan_vsi_idx]);
1692 }
1693
1694 /* Now that we've notified HW to disable all of the VF rings, wait
1695 * until they finish.
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_wait_queues_disabled(pf->vsi[vf->lan_vsi_idx]);
1707 }
1708
1709 /* Hw may need up to 50ms to finish disabling the RX queues. We
1710 * minimize the wait by delaying only once for all VFs.
1711 */
1712 mdelay(50);
1713
1714 /* Finish the reset on each VF */
1715 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1716 /* If VF is reset in another thread just continue */
1717 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1718 continue;
1719
1720 i40e_cleanup_reset_vf(vf);
1721 }
1722
1723 i40e_flush(hw);
1724 usleep_range(20000, 40000);
1725 clear_bit(__I40E_VF_DISABLE, pf->state);
1726
1727 return true;
1728 }
1729
1730 /**
1731 * i40e_free_vfs
1732 * @pf: pointer to the PF structure
1733 *
1734 * free VF resources
1735 **/
i40e_free_vfs(struct i40e_pf * pf)1736 void i40e_free_vfs(struct i40e_pf *pf)
1737 {
1738 struct i40e_hw *hw = &pf->hw;
1739 u32 reg_idx, bit_idx;
1740 int i, tmp, vf_id;
1741
1742 if (!pf->vf)
1743 return;
1744
1745 set_bit(__I40E_VFS_RELEASING, pf->state);
1746 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1747 usleep_range(1000, 2000);
1748
1749 i40e_notify_client_of_vf_enable(pf, 0);
1750
1751 /* Disable IOV before freeing resources. This lets any VF drivers
1752 * running in the host get themselves cleaned up before we yank
1753 * the carpet out from underneath their feet.
1754 */
1755 if (!pci_vfs_assigned(pf->pdev))
1756 pci_disable_sriov(pf->pdev);
1757 else
1758 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1759
1760 /* Amortize wait time by stopping all VFs at the same time */
1761 for (i = 0; i < pf->num_alloc_vfs; i++) {
1762 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1763 continue;
1764
1765 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1766 }
1767
1768 for (i = 0; i < pf->num_alloc_vfs; i++) {
1769 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1770 continue;
1771
1772 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1773 }
1774
1775 /* free up VF resources */
1776 tmp = pf->num_alloc_vfs;
1777 pf->num_alloc_vfs = 0;
1778 for (i = 0; i < tmp; i++) {
1779 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1780 i40e_free_vf_res(&pf->vf[i]);
1781 /* disable qp mappings */
1782 i40e_disable_vf_mappings(&pf->vf[i]);
1783 }
1784
1785 kfree(pf->vf);
1786 pf->vf = NULL;
1787
1788 /* This check is for when the driver is unloaded while VFs are
1789 * assigned. Setting the number of VFs to 0 through sysfs is caught
1790 * before this function ever gets called.
1791 */
1792 if (!pci_vfs_assigned(pf->pdev)) {
1793 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1794 * work correctly when SR-IOV gets re-enabled.
1795 */
1796 for (vf_id = 0; vf_id < tmp; vf_id++) {
1797 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1798 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1799 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1800 }
1801 }
1802 clear_bit(__I40E_VF_DISABLE, pf->state);
1803 clear_bit(__I40E_VFS_RELEASING, pf->state);
1804 }
1805
1806 #ifdef CONFIG_PCI_IOV
1807 /**
1808 * i40e_alloc_vfs
1809 * @pf: pointer to the PF structure
1810 * @num_alloc_vfs: number of VFs to allocate
1811 *
1812 * allocate VF resources
1813 **/
i40e_alloc_vfs(struct i40e_pf * pf,u16 num_alloc_vfs)1814 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1815 {
1816 struct i40e_vf *vfs;
1817 int i, ret = 0;
1818
1819 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1820 i40e_irq_dynamic_disable_icr0(pf);
1821
1822 /* Check to see if we're just allocating resources for extant VFs */
1823 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1824 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1825 if (ret) {
1826 clear_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1827 pf->num_alloc_vfs = 0;
1828 goto err_iov;
1829 }
1830 }
1831 /* allocate memory */
1832 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1833 if (!vfs) {
1834 ret = -ENOMEM;
1835 goto err_alloc;
1836 }
1837 pf->vf = vfs;
1838
1839 /* apply default profile */
1840 for (i = 0; i < num_alloc_vfs; i++) {
1841 vfs[i].pf = pf;
1842 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1843 vfs[i].vf_id = i;
1844
1845 /* assign default capabilities */
1846 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1847 vfs[i].spoofchk = true;
1848
1849 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1850
1851 }
1852 pf->num_alloc_vfs = num_alloc_vfs;
1853
1854 /* VF resources get allocated during reset */
1855 i40e_reset_all_vfs(pf, false);
1856
1857 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1858
1859 err_alloc:
1860 if (ret)
1861 i40e_free_vfs(pf);
1862 err_iov:
1863 /* Re-enable interrupt 0. */
1864 i40e_irq_dynamic_enable_icr0(pf);
1865 return ret;
1866 }
1867
1868 #endif
1869 /**
1870 * i40e_pci_sriov_enable
1871 * @pdev: pointer to a pci_dev structure
1872 * @num_vfs: number of VFs to allocate
1873 *
1874 * Enable or change the number of VFs
1875 **/
i40e_pci_sriov_enable(struct pci_dev * pdev,int num_vfs)1876 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1877 {
1878 #ifdef CONFIG_PCI_IOV
1879 struct i40e_pf *pf = pci_get_drvdata(pdev);
1880 int pre_existing_vfs = pci_num_vf(pdev);
1881 int err = 0;
1882
1883 if (test_bit(__I40E_TESTING, pf->state)) {
1884 dev_warn(&pdev->dev,
1885 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1886 err = -EPERM;
1887 goto err_out;
1888 }
1889
1890 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1891 i40e_free_vfs(pf);
1892 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1893 goto out;
1894
1895 if (num_vfs > pf->num_req_vfs) {
1896 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1897 num_vfs, pf->num_req_vfs);
1898 err = -EPERM;
1899 goto err_out;
1900 }
1901
1902 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1903 err = i40e_alloc_vfs(pf, num_vfs);
1904 if (err) {
1905 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1906 goto err_out;
1907 }
1908
1909 out:
1910 return num_vfs;
1911
1912 err_out:
1913 return err;
1914 #endif
1915 return 0;
1916 }
1917
1918 /**
1919 * i40e_pci_sriov_configure
1920 * @pdev: pointer to a pci_dev structure
1921 * @num_vfs: number of VFs to allocate
1922 *
1923 * Enable or change the number of VFs. Called when the user updates the number
1924 * of VFs in sysfs.
1925 **/
i40e_pci_sriov_configure(struct pci_dev * pdev,int num_vfs)1926 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1927 {
1928 struct i40e_pf *pf = pci_get_drvdata(pdev);
1929 int ret = 0;
1930
1931 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1932 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1933 return -EAGAIN;
1934 }
1935
1936 if (num_vfs) {
1937 if (!test_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags)) {
1938 set_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1939 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1940 }
1941 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1942 goto sriov_configure_out;
1943 }
1944
1945 if (!pci_vfs_assigned(pf->pdev)) {
1946 i40e_free_vfs(pf);
1947 clear_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags);
1948 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1949 } else {
1950 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1951 ret = -EINVAL;
1952 goto sriov_configure_out;
1953 }
1954 sriov_configure_out:
1955 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1956 return ret;
1957 }
1958
1959 /***********************virtual channel routines******************/
1960
1961 /**
1962 * i40e_vc_send_msg_to_vf
1963 * @vf: pointer to the VF info
1964 * @v_opcode: virtual channel opcode
1965 * @v_retval: virtual channel return value
1966 * @msg: pointer to the msg buffer
1967 * @msglen: msg length
1968 *
1969 * send msg to VF
1970 **/
i40e_vc_send_msg_to_vf(struct i40e_vf * vf,u32 v_opcode,u32 v_retval,u8 * msg,u16 msglen)1971 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1972 u32 v_retval, u8 *msg, u16 msglen)
1973 {
1974 struct i40e_pf *pf;
1975 struct i40e_hw *hw;
1976 int abs_vf_id;
1977 int aq_ret;
1978
1979 /* validate the request */
1980 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1981 return -EINVAL;
1982
1983 pf = vf->pf;
1984 hw = &pf->hw;
1985 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1986
1987 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1988 msg, msglen, NULL);
1989 if (aq_ret) {
1990 dev_info(&pf->pdev->dev,
1991 "Unable to send the message to VF %d aq_err %d\n",
1992 vf->vf_id, pf->hw.aq.asq_last_status);
1993 return -EIO;
1994 }
1995
1996 return 0;
1997 }
1998
1999 /**
2000 * i40e_vc_send_resp_to_vf
2001 * @vf: pointer to the VF info
2002 * @opcode: operation code
2003 * @retval: return value
2004 *
2005 * send resp msg to VF
2006 **/
i40e_vc_send_resp_to_vf(struct i40e_vf * vf,enum virtchnl_ops opcode,int retval)2007 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
2008 enum virtchnl_ops opcode,
2009 int retval)
2010 {
2011 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
2012 }
2013
2014 /**
2015 * i40e_sync_vf_state
2016 * @vf: pointer to the VF info
2017 * @state: VF state
2018 *
2019 * Called from a VF message to synchronize the service with a potential
2020 * VF reset state
2021 **/
i40e_sync_vf_state(struct i40e_vf * vf,enum i40e_vf_states state)2022 static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
2023 {
2024 int i;
2025
2026 /* When handling some messages, it needs VF state to be set.
2027 * It is possible that this flag is cleared during VF reset,
2028 * so there is a need to wait until the end of the reset to
2029 * handle the request message correctly.
2030 */
2031 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
2032 if (test_bit(state, &vf->vf_states))
2033 return true;
2034 usleep_range(10000, 20000);
2035 }
2036
2037 return test_bit(state, &vf->vf_states);
2038 }
2039
2040 /**
2041 * i40e_vc_get_version_msg
2042 * @vf: pointer to the VF info
2043 * @msg: pointer to the msg buffer
2044 *
2045 * called from the VF to request the API version used by the PF
2046 **/
i40e_vc_get_version_msg(struct i40e_vf * vf,u8 * msg)2047 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
2048 {
2049 struct virtchnl_version_info info = {
2050 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
2051 };
2052
2053 vf->vf_ver = *(struct virtchnl_version_info *)msg;
2054 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
2055 if (VF_IS_V10(&vf->vf_ver))
2056 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
2057 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
2058 0, (u8 *)&info,
2059 sizeof(struct virtchnl_version_info));
2060 }
2061
2062 /**
2063 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
2064 * @vf: pointer to VF structure
2065 **/
i40e_del_qch(struct i40e_vf * vf)2066 static void i40e_del_qch(struct i40e_vf *vf)
2067 {
2068 struct i40e_pf *pf = vf->pf;
2069 int i;
2070
2071 /* first element in the array belongs to primary VF VSI and we shouldn't
2072 * delete it. We should however delete the rest of the VSIs created
2073 */
2074 for (i = 1; i < vf->num_tc; i++) {
2075 if (vf->ch[i].vsi_idx) {
2076 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
2077 vf->ch[i].vsi_idx = 0;
2078 vf->ch[i].vsi_id = 0;
2079 }
2080 }
2081 }
2082
2083 /**
2084 * i40e_vc_get_max_frame_size
2085 * @vf: pointer to the VF
2086 *
2087 * Max frame size is determined based on the current port's max frame size and
2088 * whether a port VLAN is configured on this VF. The VF is not aware whether
2089 * it's in a port VLAN so the PF needs to account for this in max frame size
2090 * checks and sending the max frame size to the VF.
2091 **/
i40e_vc_get_max_frame_size(struct i40e_vf * vf)2092 static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2093 {
2094 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2095
2096 if (vf->port_vlan_id)
2097 max_frame_size -= VLAN_HLEN;
2098
2099 return max_frame_size;
2100 }
2101
2102 /**
2103 * i40e_vc_get_vf_resources_msg
2104 * @vf: pointer to the VF info
2105 * @msg: pointer to the msg buffer
2106 *
2107 * called from the VF to request its resources
2108 **/
i40e_vc_get_vf_resources_msg(struct i40e_vf * vf,u8 * msg)2109 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2110 {
2111 struct virtchnl_vf_resource *vfres = NULL;
2112 struct i40e_pf *pf = vf->pf;
2113 struct i40e_vsi *vsi;
2114 int num_vsis = 1;
2115 int aq_ret = 0;
2116 size_t len = 0;
2117 int ret;
2118
2119 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
2120 aq_ret = -EINVAL;
2121 goto err;
2122 }
2123
2124 len = virtchnl_struct_size(vfres, vsi_res, num_vsis);
2125 vfres = kzalloc(len, GFP_KERNEL);
2126 if (!vfres) {
2127 aq_ret = -ENOMEM;
2128 len = 0;
2129 goto err;
2130 }
2131 if (VF_IS_V11(&vf->vf_ver))
2132 vf->driver_caps = *(u32 *)msg;
2133 else
2134 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2135 VIRTCHNL_VF_OFFLOAD_RSS_REG |
2136 VIRTCHNL_VF_OFFLOAD_VLAN;
2137
2138 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2139 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
2140 vsi = pf->vsi[vf->lan_vsi_idx];
2141 if (!vsi->info.pvid)
2142 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2143
2144 if (i40e_vf_client_capable(pf, vf->vf_id) &&
2145 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RDMA)) {
2146 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RDMA;
2147 set_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states);
2148 } else {
2149 clear_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states);
2150 }
2151
2152 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2153 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2154 } else {
2155 if (test_bit(I40E_HW_CAP_RSS_AQ, pf->hw.caps) &&
2156 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2157 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2158 else
2159 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2160 }
2161
2162 if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE, pf->hw.caps)) {
2163 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2164 vfres->vf_cap_flags |=
2165 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2166 }
2167
2168 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2169 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2170
2171 if (test_bit(I40E_HW_CAP_OUTER_UDP_CSUM, pf->hw.caps) &&
2172 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2173 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2174
2175 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2176 if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
2177 dev_err(&pf->pdev->dev,
2178 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2179 vf->vf_id);
2180 aq_ret = -EINVAL;
2181 goto err;
2182 }
2183 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2184 }
2185
2186 if (test_bit(I40E_HW_CAP_WB_ON_ITR, pf->hw.caps)) {
2187 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2188 vfres->vf_cap_flags |=
2189 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2190 }
2191
2192 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2193 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2194
2195 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2196 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2197
2198 vfres->num_vsis = num_vsis;
2199 vfres->num_queue_pairs = vf->num_queue_pairs;
2200 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2201 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2202 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2203 vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2204
2205 if (vf->lan_vsi_idx) {
2206 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2207 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2208 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2209 /* VFs only use TC 0 */
2210 vfres->vsi_res[0].qset_handle
2211 = le16_to_cpu(vsi->info.qs_handle[0]);
2212 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) {
2213 spin_lock_bh(&vsi->mac_filter_hash_lock);
2214 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
2215 eth_zero_addr(vf->default_lan_addr.addr);
2216 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2217 }
2218 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2219 vf->default_lan_addr.addr);
2220 }
2221 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2222
2223 err:
2224 /* send the response back to the VF */
2225 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2226 aq_ret, (u8 *)vfres, len);
2227
2228 kfree(vfres);
2229 return ret;
2230 }
2231
2232 /**
2233 * i40e_vc_config_promiscuous_mode_msg
2234 * @vf: pointer to the VF info
2235 * @msg: pointer to the msg buffer
2236 *
2237 * called from the VF to configure the promiscuous mode of
2238 * VF vsis
2239 **/
i40e_vc_config_promiscuous_mode_msg(struct i40e_vf * vf,u8 * msg)2240 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2241 {
2242 struct virtchnl_promisc_info *info =
2243 (struct virtchnl_promisc_info *)msg;
2244 struct i40e_pf *pf = vf->pf;
2245 bool allmulti = false;
2246 bool alluni = false;
2247 int aq_ret = 0;
2248
2249 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2250 aq_ret = -EINVAL;
2251 goto err_out;
2252 }
2253 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2254 dev_err(&pf->pdev->dev,
2255 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2256 vf->vf_id);
2257
2258 /* Lie to the VF on purpose, because this is an error we can
2259 * ignore. Unprivileged VF is not a virtual channel error.
2260 */
2261 aq_ret = 0;
2262 goto err_out;
2263 }
2264
2265 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2266 aq_ret = -EINVAL;
2267 goto err_out;
2268 }
2269
2270 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2271 aq_ret = -EINVAL;
2272 goto err_out;
2273 }
2274
2275 /* Multicast promiscuous handling*/
2276 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2277 allmulti = true;
2278
2279 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2280 alluni = true;
2281 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2282 alluni);
2283 if (aq_ret)
2284 goto err_out;
2285
2286 if (allmulti) {
2287 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2288 &vf->vf_states))
2289 dev_info(&pf->pdev->dev,
2290 "VF %d successfully set multicast promiscuous mode\n",
2291 vf->vf_id);
2292 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2293 &vf->vf_states))
2294 dev_info(&pf->pdev->dev,
2295 "VF %d successfully unset multicast promiscuous mode\n",
2296 vf->vf_id);
2297
2298 if (alluni) {
2299 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2300 &vf->vf_states))
2301 dev_info(&pf->pdev->dev,
2302 "VF %d successfully set unicast promiscuous mode\n",
2303 vf->vf_id);
2304 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2305 &vf->vf_states))
2306 dev_info(&pf->pdev->dev,
2307 "VF %d successfully unset unicast promiscuous mode\n",
2308 vf->vf_id);
2309
2310 err_out:
2311 /* send the response to the VF */
2312 return i40e_vc_send_resp_to_vf(vf,
2313 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2314 aq_ret);
2315 }
2316
2317 /**
2318 * i40e_vc_config_queues_msg
2319 * @vf: pointer to the VF info
2320 * @msg: pointer to the msg buffer
2321 *
2322 * called from the VF to configure the rx/tx
2323 * queues
2324 **/
i40e_vc_config_queues_msg(struct i40e_vf * vf,u8 * msg)2325 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2326 {
2327 struct virtchnl_vsi_queue_config_info *qci =
2328 (struct virtchnl_vsi_queue_config_info *)msg;
2329 struct virtchnl_queue_pair_info *qpi;
2330 u16 vsi_id, vsi_queue_id = 0;
2331 struct i40e_pf *pf = vf->pf;
2332 int i, j = 0, idx = 0;
2333 struct i40e_vsi *vsi;
2334 u16 num_qps_all = 0;
2335 int aq_ret = 0;
2336
2337 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2338 aq_ret = -EINVAL;
2339 goto error_param;
2340 }
2341
2342 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2343 aq_ret = -EINVAL;
2344 goto error_param;
2345 }
2346
2347 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2348 aq_ret = -EINVAL;
2349 goto error_param;
2350 }
2351
2352 if (vf->adq_enabled) {
2353 for (i = 0; i < vf->num_tc; i++)
2354 num_qps_all += vf->ch[i].num_qps;
2355 if (num_qps_all != qci->num_queue_pairs) {
2356 aq_ret = -EINVAL;
2357 goto error_param;
2358 }
2359 }
2360
2361 vsi_id = qci->vsi_id;
2362
2363 for (i = 0; i < qci->num_queue_pairs; i++) {
2364 qpi = &qci->qpair[i];
2365
2366 if (!vf->adq_enabled) {
2367 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2368 qpi->txq.queue_id)) {
2369 aq_ret = -EINVAL;
2370 goto error_param;
2371 }
2372
2373 vsi_queue_id = qpi->txq.queue_id;
2374
2375 if (qpi->txq.vsi_id != qci->vsi_id ||
2376 qpi->rxq.vsi_id != qci->vsi_id ||
2377 qpi->rxq.queue_id != vsi_queue_id) {
2378 aq_ret = -EINVAL;
2379 goto error_param;
2380 }
2381 }
2382
2383 if (vf->adq_enabled) {
2384 if (idx >= ARRAY_SIZE(vf->ch)) {
2385 aq_ret = -ENODEV;
2386 goto error_param;
2387 }
2388 vsi_id = vf->ch[idx].vsi_id;
2389 }
2390
2391 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2392 &qpi->rxq) ||
2393 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2394 &qpi->txq)) {
2395 aq_ret = -EINVAL;
2396 goto error_param;
2397 }
2398
2399 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2400 * VF does not know about these additional VSIs and all
2401 * it cares is about its own queues. PF configures these queues
2402 * to its appropriate VSIs based on TC mapping
2403 */
2404 if (vf->adq_enabled) {
2405 if (idx >= ARRAY_SIZE(vf->ch)) {
2406 aq_ret = -ENODEV;
2407 goto error_param;
2408 }
2409 if (j == (vf->ch[idx].num_qps - 1)) {
2410 idx++;
2411 j = 0; /* resetting the queue count */
2412 vsi_queue_id = 0;
2413 } else {
2414 j++;
2415 vsi_queue_id++;
2416 }
2417 }
2418 }
2419 /* set vsi num_queue_pairs in use to num configured by VF */
2420 if (!vf->adq_enabled) {
2421 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2422 qci->num_queue_pairs;
2423 } else {
2424 for (i = 0; i < vf->num_tc; i++) {
2425 vsi = pf->vsi[vf->ch[i].vsi_idx];
2426 vsi->num_queue_pairs = vf->ch[i].num_qps;
2427
2428 if (i40e_update_adq_vsi_queues(vsi, i)) {
2429 aq_ret = -EIO;
2430 goto error_param;
2431 }
2432 }
2433 }
2434
2435 error_param:
2436 /* send the response to the VF */
2437 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2438 aq_ret);
2439 }
2440
2441 /**
2442 * i40e_validate_queue_map - check queue map is valid
2443 * @vf: the VF structure pointer
2444 * @vsi_id: vsi id
2445 * @queuemap: Tx or Rx queue map
2446 *
2447 * check if Tx or Rx queue map is valid
2448 **/
i40e_validate_queue_map(struct i40e_vf * vf,u16 vsi_id,unsigned long queuemap)2449 static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2450 unsigned long queuemap)
2451 {
2452 u16 vsi_queue_id, queue_id;
2453
2454 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2455 if (vf->adq_enabled) {
2456 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2457 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2458 } else {
2459 queue_id = vsi_queue_id;
2460 }
2461
2462 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2463 return -EINVAL;
2464 }
2465
2466 return 0;
2467 }
2468
2469 /**
2470 * i40e_vc_config_irq_map_msg
2471 * @vf: pointer to the VF info
2472 * @msg: pointer to the msg buffer
2473 *
2474 * called from the VF to configure the irq to
2475 * queue map
2476 **/
i40e_vc_config_irq_map_msg(struct i40e_vf * vf,u8 * msg)2477 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2478 {
2479 struct virtchnl_irq_map_info *irqmap_info =
2480 (struct virtchnl_irq_map_info *)msg;
2481 struct virtchnl_vector_map *map;
2482 int aq_ret = 0;
2483 u16 vsi_id;
2484 int i;
2485
2486 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2487 aq_ret = -EINVAL;
2488 goto error_param;
2489 }
2490
2491 if (irqmap_info->num_vectors >
2492 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2493 aq_ret = -EINVAL;
2494 goto error_param;
2495 }
2496
2497 for (i = 0; i < irqmap_info->num_vectors; i++) {
2498 map = &irqmap_info->vecmap[i];
2499 /* validate msg params */
2500 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2501 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2502 aq_ret = -EINVAL;
2503 goto error_param;
2504 }
2505 vsi_id = map->vsi_id;
2506
2507 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2508 aq_ret = -EINVAL;
2509 goto error_param;
2510 }
2511
2512 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2513 aq_ret = -EINVAL;
2514 goto error_param;
2515 }
2516
2517 i40e_config_irq_link_list(vf, vsi_id, map);
2518 }
2519 error_param:
2520 /* send the response to the VF */
2521 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2522 aq_ret);
2523 }
2524
2525 /**
2526 * i40e_ctrl_vf_tx_rings
2527 * @vsi: the SRIOV VSI being configured
2528 * @q_map: bit map of the queues to be enabled
2529 * @enable: start or stop the queue
2530 **/
i40e_ctrl_vf_tx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2531 static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2532 bool enable)
2533 {
2534 struct i40e_pf *pf = vsi->back;
2535 int ret = 0;
2536 u16 q_id;
2537
2538 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2539 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2540 vsi->base_queue + q_id,
2541 false /*is xdp*/, enable);
2542 if (ret)
2543 break;
2544 }
2545 return ret;
2546 }
2547
2548 /**
2549 * i40e_ctrl_vf_rx_rings
2550 * @vsi: the SRIOV VSI being configured
2551 * @q_map: bit map of the queues to be enabled
2552 * @enable: start or stop the queue
2553 **/
i40e_ctrl_vf_rx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2554 static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2555 bool enable)
2556 {
2557 struct i40e_pf *pf = vsi->back;
2558 int ret = 0;
2559 u16 q_id;
2560
2561 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2562 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2563 enable);
2564 if (ret)
2565 break;
2566 }
2567 return ret;
2568 }
2569
2570 /**
2571 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2572 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2573 *
2574 * Returns true if validation was successful, else false.
2575 */
i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select * vqs)2576 static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2577 {
2578 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2579 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2580 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2581 return false;
2582
2583 return true;
2584 }
2585
2586 /**
2587 * i40e_vc_enable_queues_msg
2588 * @vf: pointer to the VF info
2589 * @msg: pointer to the msg buffer
2590 *
2591 * called from the VF to enable all or specific queue(s)
2592 **/
i40e_vc_enable_queues_msg(struct i40e_vf * vf,u8 * msg)2593 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2594 {
2595 struct virtchnl_queue_select *vqs =
2596 (struct virtchnl_queue_select *)msg;
2597 struct i40e_pf *pf = vf->pf;
2598 int aq_ret = 0;
2599 int i;
2600
2601 if (vf->is_disabled_from_host) {
2602 aq_ret = -EPERM;
2603 dev_info(&pf->pdev->dev,
2604 "Admin has disabled VF %d, will not enable queues\n",
2605 vf->vf_id);
2606 goto error_param;
2607 }
2608
2609 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2610 aq_ret = -EINVAL;
2611 goto error_param;
2612 }
2613
2614 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2615 aq_ret = -EINVAL;
2616 goto error_param;
2617 }
2618
2619 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2620 aq_ret = -EINVAL;
2621 goto error_param;
2622 }
2623
2624 /* Use the queue bit map sent by the VF */
2625 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2626 true)) {
2627 aq_ret = -EIO;
2628 goto error_param;
2629 }
2630 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2631 true)) {
2632 aq_ret = -EIO;
2633 goto error_param;
2634 }
2635
2636 /* need to start the rings for additional ADq VSI's as well */
2637 if (vf->adq_enabled) {
2638 /* zero belongs to LAN VSI */
2639 for (i = 1; i < vf->num_tc; i++) {
2640 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2641 aq_ret = -EIO;
2642 }
2643 }
2644
2645 error_param:
2646 /* send the response to the VF */
2647 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2648 aq_ret);
2649 }
2650
2651 /**
2652 * i40e_vc_disable_queues_msg
2653 * @vf: pointer to the VF info
2654 * @msg: pointer to the msg buffer
2655 *
2656 * called from the VF to disable all or specific
2657 * queue(s)
2658 **/
i40e_vc_disable_queues_msg(struct i40e_vf * vf,u8 * msg)2659 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2660 {
2661 struct virtchnl_queue_select *vqs =
2662 (struct virtchnl_queue_select *)msg;
2663 struct i40e_pf *pf = vf->pf;
2664 int aq_ret = 0;
2665
2666 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2667 aq_ret = -EINVAL;
2668 goto error_param;
2669 }
2670
2671 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2672 aq_ret = -EINVAL;
2673 goto error_param;
2674 }
2675
2676 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2677 aq_ret = -EINVAL;
2678 goto error_param;
2679 }
2680
2681 /* Use the queue bit map sent by the VF */
2682 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2683 false)) {
2684 aq_ret = -EIO;
2685 goto error_param;
2686 }
2687 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2688 false)) {
2689 aq_ret = -EIO;
2690 goto error_param;
2691 }
2692 error_param:
2693 /* send the response to the VF */
2694 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2695 aq_ret);
2696 }
2697
2698 /**
2699 * i40e_check_enough_queue - find big enough queue number
2700 * @vf: pointer to the VF info
2701 * @needed: the number of items needed
2702 *
2703 * Returns the base item index of the queue, or negative for error
2704 **/
i40e_check_enough_queue(struct i40e_vf * vf,u16 needed)2705 static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2706 {
2707 unsigned int i, cur_queues, more, pool_size;
2708 struct i40e_lump_tracking *pile;
2709 struct i40e_pf *pf = vf->pf;
2710 struct i40e_vsi *vsi;
2711
2712 vsi = pf->vsi[vf->lan_vsi_idx];
2713 cur_queues = vsi->alloc_queue_pairs;
2714
2715 /* if current allocated queues are enough for need */
2716 if (cur_queues >= needed)
2717 return vsi->base_queue;
2718
2719 pile = pf->qp_pile;
2720 if (cur_queues > 0) {
2721 /* if the allocated queues are not zero
2722 * just check if there are enough queues for more
2723 * behind the allocated queues.
2724 */
2725 more = needed - cur_queues;
2726 for (i = vsi->base_queue + cur_queues;
2727 i < pile->num_entries; i++) {
2728 if (pile->list[i] & I40E_PILE_VALID_BIT)
2729 break;
2730
2731 if (more-- == 1)
2732 /* there is enough */
2733 return vsi->base_queue;
2734 }
2735 }
2736
2737 pool_size = 0;
2738 for (i = 0; i < pile->num_entries; i++) {
2739 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2740 pool_size = 0;
2741 continue;
2742 }
2743 if (needed <= ++pool_size)
2744 /* there is enough */
2745 return i;
2746 }
2747
2748 return -ENOMEM;
2749 }
2750
2751 /**
2752 * i40e_vc_request_queues_msg
2753 * @vf: pointer to the VF info
2754 * @msg: pointer to the msg buffer
2755 *
2756 * VFs get a default number of queues but can use this message to request a
2757 * different number. If the request is successful, PF will reset the VF and
2758 * return 0. If unsuccessful, PF will send message informing VF of number of
2759 * available queues and return result of sending VF a message.
2760 **/
i40e_vc_request_queues_msg(struct i40e_vf * vf,u8 * msg)2761 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2762 {
2763 struct virtchnl_vf_res_request *vfres =
2764 (struct virtchnl_vf_res_request *)msg;
2765 u16 req_pairs = vfres->num_queue_pairs;
2766 u8 cur_pairs = vf->num_queue_pairs;
2767 struct i40e_pf *pf = vf->pf;
2768
2769 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2770 return -EINVAL;
2771
2772 if (req_pairs > I40E_MAX_VF_QUEUES) {
2773 dev_err(&pf->pdev->dev,
2774 "VF %d tried to request more than %d queues.\n",
2775 vf->vf_id,
2776 I40E_MAX_VF_QUEUES);
2777 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2778 } else if (req_pairs - cur_pairs > pf->queues_left) {
2779 dev_warn(&pf->pdev->dev,
2780 "VF %d requested %d more queues, but only %d left.\n",
2781 vf->vf_id,
2782 req_pairs - cur_pairs,
2783 pf->queues_left);
2784 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2785 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2786 dev_warn(&pf->pdev->dev,
2787 "VF %d requested %d more queues, but there is not enough for it.\n",
2788 vf->vf_id,
2789 req_pairs - cur_pairs);
2790 vfres->num_queue_pairs = cur_pairs;
2791 } else {
2792 /* successful request */
2793 vf->num_req_queues = req_pairs;
2794 i40e_vc_reset_vf(vf, true);
2795 return 0;
2796 }
2797
2798 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2799 (u8 *)vfres, sizeof(*vfres));
2800 }
2801
2802 /**
2803 * i40e_vc_get_stats_msg
2804 * @vf: pointer to the VF info
2805 * @msg: pointer to the msg buffer
2806 *
2807 * called from the VF to get vsi stats
2808 **/
i40e_vc_get_stats_msg(struct i40e_vf * vf,u8 * msg)2809 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2810 {
2811 struct virtchnl_queue_select *vqs =
2812 (struct virtchnl_queue_select *)msg;
2813 struct i40e_pf *pf = vf->pf;
2814 struct i40e_eth_stats stats;
2815 int aq_ret = 0;
2816 struct i40e_vsi *vsi;
2817
2818 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2819
2820 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2821 aq_ret = -EINVAL;
2822 goto error_param;
2823 }
2824
2825 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2826 aq_ret = -EINVAL;
2827 goto error_param;
2828 }
2829
2830 vsi = pf->vsi[vf->lan_vsi_idx];
2831 if (!vsi) {
2832 aq_ret = -EINVAL;
2833 goto error_param;
2834 }
2835 i40e_update_eth_stats(vsi);
2836 stats = vsi->eth_stats;
2837
2838 error_param:
2839 /* send the response back to the VF */
2840 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2841 (u8 *)&stats, sizeof(stats));
2842 }
2843
2844 /**
2845 * i40e_can_vf_change_mac
2846 * @vf: pointer to the VF info
2847 *
2848 * Return true if the VF is allowed to change its MAC filters, false otherwise
2849 */
i40e_can_vf_change_mac(struct i40e_vf * vf)2850 static bool i40e_can_vf_change_mac(struct i40e_vf *vf)
2851 {
2852 /* If the VF MAC address has been set administratively (via the
2853 * ndo_set_vf_mac command), then deny permission to the VF to
2854 * add/delete unicast MAC addresses, unless the VF is trusted
2855 */
2856 if (vf->pf_set_mac && !vf->trusted)
2857 return false;
2858
2859 return true;
2860 }
2861
2862 #define I40E_MAX_MACVLAN_PER_HW 3072
2863 #define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \
2864 (num_ports))
2865 /* If the VF is not trusted restrict the number of MAC/VLAN it can program
2866 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2867 */
2868 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2869 #define I40E_VC_MAX_VLAN_PER_VF 16
2870
2871 #define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \
2872 ({ typeof(vf_num) vf_num_ = (vf_num); \
2873 typeof(num_ports) num_ports_ = (num_ports); \
2874 ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \
2875 I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \
2876 I40E_VC_MAX_MAC_ADDR_PER_VF; })
2877 /**
2878 * i40e_check_vf_permission
2879 * @vf: pointer to the VF info
2880 * @al: MAC address list from virtchnl
2881 *
2882 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2883 * if any address in the list is not valid. Checks the following conditions:
2884 *
2885 * 1) broadcast and zero addresses are never valid
2886 * 2) unicast addresses are not allowed if the VMM has administratively set
2887 * the VF MAC address, unless the VF is marked as privileged.
2888 * 3) There is enough space to add all the addresses.
2889 *
2890 * Note that to guarantee consistency, it is expected this function be called
2891 * while holding the mac_filter_hash_lock, as otherwise the current number of
2892 * addresses might not be accurate.
2893 **/
i40e_check_vf_permission(struct i40e_vf * vf,struct virtchnl_ether_addr_list * al)2894 static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2895 struct virtchnl_ether_addr_list *al)
2896 {
2897 struct i40e_pf *pf = vf->pf;
2898 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2899 struct i40e_hw *hw = &pf->hw;
2900 int mac2add_cnt = 0;
2901 int i;
2902
2903 for (i = 0; i < al->num_elements; i++) {
2904 struct i40e_mac_filter *f;
2905 u8 *addr = al->list[i].addr;
2906
2907 if (is_broadcast_ether_addr(addr) ||
2908 is_zero_ether_addr(addr)) {
2909 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2910 addr);
2911 return -EINVAL;
2912 }
2913
2914 /* If the host VMM administrator has set the VF MAC address
2915 * administratively via the ndo_set_vf_mac command then deny
2916 * permission to the VF to add or delete unicast MAC addresses.
2917 * Unless the VF is privileged and then it can do whatever.
2918 * The VF may request to set the MAC address filter already
2919 * assigned to it so do not return an error in that case.
2920 */
2921 if (!i40e_can_vf_change_mac(vf) &&
2922 !is_multicast_ether_addr(addr) &&
2923 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2924 dev_err(&pf->pdev->dev,
2925 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2926 return -EPERM;
2927 }
2928
2929 /*count filters that really will be added*/
2930 f = i40e_find_mac(vsi, addr);
2931 if (!f)
2932 ++mac2add_cnt;
2933 }
2934
2935 /* If this VF is not privileged, then we can't add more than a limited
2936 * number of addresses. Check to make sure that the additions do not
2937 * push us over the limit.
2938 */
2939 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2940 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2941 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2942 dev_err(&pf->pdev->dev,
2943 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2944 return -EPERM;
2945 }
2946 /* If this VF is trusted, it can use more resources than untrusted.
2947 * However to ensure that every trusted VF has appropriate number of
2948 * resources, divide whole pool of resources per port and then across
2949 * all VFs.
2950 */
2951 } else {
2952 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2953 I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
2954 hw->num_ports)) {
2955 dev_err(&pf->pdev->dev,
2956 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
2957 return -EPERM;
2958 }
2959 }
2960 return 0;
2961 }
2962
2963 /**
2964 * i40e_vc_ether_addr_type - get type of virtchnl_ether_addr
2965 * @vc_ether_addr: used to extract the type
2966 **/
2967 static u8
i40e_vc_ether_addr_type(struct virtchnl_ether_addr * vc_ether_addr)2968 i40e_vc_ether_addr_type(struct virtchnl_ether_addr *vc_ether_addr)
2969 {
2970 return vc_ether_addr->type & VIRTCHNL_ETHER_ADDR_TYPE_MASK;
2971 }
2972
2973 /**
2974 * i40e_is_vc_addr_legacy
2975 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2976 *
2977 * check if the MAC address is from an older VF
2978 **/
2979 static bool
i40e_is_vc_addr_legacy(struct virtchnl_ether_addr * vc_ether_addr)2980 i40e_is_vc_addr_legacy(struct virtchnl_ether_addr *vc_ether_addr)
2981 {
2982 return i40e_vc_ether_addr_type(vc_ether_addr) ==
2983 VIRTCHNL_ETHER_ADDR_LEGACY;
2984 }
2985
2986 /**
2987 * i40e_is_vc_addr_primary
2988 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2989 *
2990 * check if the MAC address is the VF's primary MAC
2991 * This function should only be called when the MAC address in
2992 * virtchnl_ether_addr is a valid unicast MAC
2993 **/
2994 static bool
i40e_is_vc_addr_primary(struct virtchnl_ether_addr * vc_ether_addr)2995 i40e_is_vc_addr_primary(struct virtchnl_ether_addr *vc_ether_addr)
2996 {
2997 return i40e_vc_ether_addr_type(vc_ether_addr) ==
2998 VIRTCHNL_ETHER_ADDR_PRIMARY;
2999 }
3000
3001 /**
3002 * i40e_update_vf_mac_addr
3003 * @vf: VF to update
3004 * @vc_ether_addr: structure from VIRTCHNL with MAC to add
3005 *
3006 * update the VF's cached hardware MAC if allowed
3007 **/
3008 static void
i40e_update_vf_mac_addr(struct i40e_vf * vf,struct virtchnl_ether_addr * vc_ether_addr)3009 i40e_update_vf_mac_addr(struct i40e_vf *vf,
3010 struct virtchnl_ether_addr *vc_ether_addr)
3011 {
3012 u8 *mac_addr = vc_ether_addr->addr;
3013
3014 if (!is_valid_ether_addr(mac_addr))
3015 return;
3016
3017 /* If request to add MAC filter is a primary request update its default
3018 * MAC address with the requested one. If it is a legacy request then
3019 * check if current default is empty if so update the default MAC
3020 */
3021 if (i40e_is_vc_addr_primary(vc_ether_addr)) {
3022 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3023 } else if (i40e_is_vc_addr_legacy(vc_ether_addr)) {
3024 if (is_zero_ether_addr(vf->default_lan_addr.addr))
3025 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3026 }
3027 }
3028
3029 /**
3030 * i40e_vc_add_mac_addr_msg
3031 * @vf: pointer to the VF info
3032 * @msg: pointer to the msg buffer
3033 *
3034 * add guest mac address filter
3035 **/
i40e_vc_add_mac_addr_msg(struct i40e_vf * vf,u8 * msg)3036 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3037 {
3038 struct virtchnl_ether_addr_list *al =
3039 (struct virtchnl_ether_addr_list *)msg;
3040 struct i40e_pf *pf = vf->pf;
3041 struct i40e_vsi *vsi = NULL;
3042 int ret = 0;
3043 int i;
3044
3045 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3046 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3047 ret = -EINVAL;
3048 goto error_param;
3049 }
3050
3051 vsi = pf->vsi[vf->lan_vsi_idx];
3052
3053 /* Lock once, because all function inside for loop accesses VSI's
3054 * MAC filter list which needs to be protected using same lock.
3055 */
3056 spin_lock_bh(&vsi->mac_filter_hash_lock);
3057
3058 ret = i40e_check_vf_permission(vf, al);
3059 if (ret) {
3060 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3061 goto error_param;
3062 }
3063
3064 /* add new addresses to the list */
3065 for (i = 0; i < al->num_elements; i++) {
3066 struct i40e_mac_filter *f;
3067
3068 f = i40e_find_mac(vsi, al->list[i].addr);
3069 if (!f) {
3070 f = i40e_add_mac_filter(vsi, al->list[i].addr);
3071
3072 if (!f) {
3073 dev_err(&pf->pdev->dev,
3074 "Unable to add MAC filter %pM for VF %d\n",
3075 al->list[i].addr, vf->vf_id);
3076 ret = -EINVAL;
3077 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3078 goto error_param;
3079 }
3080 }
3081 i40e_update_vf_mac_addr(vf, &al->list[i]);
3082 }
3083 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3084
3085 /* program the updated filter list */
3086 ret = i40e_sync_vsi_filters(vsi);
3087 if (ret)
3088 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3089 vf->vf_id, ret);
3090
3091 error_param:
3092 /* send the response to the VF */
3093 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
3094 ret, NULL, 0);
3095 }
3096
3097 /**
3098 * i40e_vc_del_mac_addr_msg
3099 * @vf: pointer to the VF info
3100 * @msg: pointer to the msg buffer
3101 *
3102 * remove guest mac address filter
3103 **/
i40e_vc_del_mac_addr_msg(struct i40e_vf * vf,u8 * msg)3104 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3105 {
3106 struct virtchnl_ether_addr_list *al =
3107 (struct virtchnl_ether_addr_list *)msg;
3108 bool was_unimac_deleted = false;
3109 struct i40e_pf *pf = vf->pf;
3110 struct i40e_vsi *vsi = NULL;
3111 int ret = 0;
3112 int i;
3113
3114 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3115 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3116 ret = -EINVAL;
3117 goto error_param;
3118 }
3119
3120 for (i = 0; i < al->num_elements; i++) {
3121 if (is_broadcast_ether_addr(al->list[i].addr) ||
3122 is_zero_ether_addr(al->list[i].addr)) {
3123 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
3124 al->list[i].addr, vf->vf_id);
3125 ret = -EINVAL;
3126 goto error_param;
3127 }
3128 }
3129 vsi = pf->vsi[vf->lan_vsi_idx];
3130
3131 spin_lock_bh(&vsi->mac_filter_hash_lock);
3132 /* delete addresses from the list */
3133 for (i = 0; i < al->num_elements; i++) {
3134 const u8 *addr = al->list[i].addr;
3135
3136 /* Allow to delete VF primary MAC only if it was not set
3137 * administratively by PF.
3138 */
3139 if (ether_addr_equal(addr, vf->default_lan_addr.addr)) {
3140 if (!vf->pf_set_mac)
3141 was_unimac_deleted = true;
3142 else
3143 continue;
3144 }
3145
3146 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
3147 ret = -EINVAL;
3148 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3149 goto error_param;
3150 }
3151 }
3152
3153 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3154
3155 if (was_unimac_deleted)
3156 eth_zero_addr(vf->default_lan_addr.addr);
3157
3158 /* program the updated filter list */
3159 ret = i40e_sync_vsi_filters(vsi);
3160 if (ret)
3161 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3162 vf->vf_id, ret);
3163
3164 if (vf->trusted && was_unimac_deleted) {
3165 struct i40e_mac_filter *f;
3166 struct hlist_node *h;
3167 u8 *macaddr = NULL;
3168 int bkt;
3169
3170 /* set last unicast mac address as default */
3171 spin_lock_bh(&vsi->mac_filter_hash_lock);
3172 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3173 if (is_valid_ether_addr(f->macaddr))
3174 macaddr = f->macaddr;
3175 }
3176 if (macaddr)
3177 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
3178 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3179 }
3180 error_param:
3181 /* send the response to the VF */
3182 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3183 }
3184
3185 /**
3186 * i40e_vc_add_vlan_msg
3187 * @vf: pointer to the VF info
3188 * @msg: pointer to the msg buffer
3189 *
3190 * program guest vlan id
3191 **/
i40e_vc_add_vlan_msg(struct i40e_vf * vf,u8 * msg)3192 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3193 {
3194 struct virtchnl_vlan_filter_list *vfl =
3195 (struct virtchnl_vlan_filter_list *)msg;
3196 struct i40e_pf *pf = vf->pf;
3197 struct i40e_vsi *vsi = NULL;
3198 int aq_ret = 0;
3199 int i;
3200
3201 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3202 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3203 dev_err(&pf->pdev->dev,
3204 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3205 goto error_param;
3206 }
3207 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3208 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3209 aq_ret = -EINVAL;
3210 goto error_param;
3211 }
3212
3213 for (i = 0; i < vfl->num_elements; i++) {
3214 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3215 aq_ret = -EINVAL;
3216 dev_err(&pf->pdev->dev,
3217 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3218 goto error_param;
3219 }
3220 }
3221 vsi = pf->vsi[vf->lan_vsi_idx];
3222 if (vsi->info.pvid) {
3223 aq_ret = -EINVAL;
3224 goto error_param;
3225 }
3226
3227 i40e_vlan_stripping_enable(vsi);
3228 for (i = 0; i < vfl->num_elements; i++) {
3229 /* add new VLAN filter */
3230 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3231 if (!ret)
3232 vf->num_vlan++;
3233
3234 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3235 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3236 true,
3237 vfl->vlan_id[i],
3238 NULL);
3239 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3240 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3241 true,
3242 vfl->vlan_id[i],
3243 NULL);
3244
3245 if (ret)
3246 dev_err(&pf->pdev->dev,
3247 "Unable to add VLAN filter %d for VF %d, error %d\n",
3248 vfl->vlan_id[i], vf->vf_id, ret);
3249 }
3250
3251 error_param:
3252 /* send the response to the VF */
3253 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3254 }
3255
3256 /**
3257 * i40e_vc_remove_vlan_msg
3258 * @vf: pointer to the VF info
3259 * @msg: pointer to the msg buffer
3260 *
3261 * remove programmed guest vlan id
3262 **/
i40e_vc_remove_vlan_msg(struct i40e_vf * vf,u8 * msg)3263 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3264 {
3265 struct virtchnl_vlan_filter_list *vfl =
3266 (struct virtchnl_vlan_filter_list *)msg;
3267 struct i40e_pf *pf = vf->pf;
3268 struct i40e_vsi *vsi = NULL;
3269 int aq_ret = 0;
3270 int i;
3271
3272 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3273 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3274 aq_ret = -EINVAL;
3275 goto error_param;
3276 }
3277
3278 for (i = 0; i < vfl->num_elements; i++) {
3279 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3280 aq_ret = -EINVAL;
3281 goto error_param;
3282 }
3283 }
3284
3285 vsi = pf->vsi[vf->lan_vsi_idx];
3286 if (vsi->info.pvid) {
3287 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3288 aq_ret = -EINVAL;
3289 goto error_param;
3290 }
3291
3292 for (i = 0; i < vfl->num_elements; i++) {
3293 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3294 vf->num_vlan--;
3295
3296 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3297 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3298 false,
3299 vfl->vlan_id[i],
3300 NULL);
3301 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3302 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3303 false,
3304 vfl->vlan_id[i],
3305 NULL);
3306 }
3307
3308 error_param:
3309 /* send the response to the VF */
3310 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3311 }
3312
3313 /**
3314 * i40e_vc_rdma_msg
3315 * @vf: pointer to the VF info
3316 * @msg: pointer to the msg buffer
3317 * @msglen: msg length
3318 *
3319 * called from the VF for the iwarp msgs
3320 **/
i40e_vc_rdma_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)3321 static int i40e_vc_rdma_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3322 {
3323 struct i40e_pf *pf = vf->pf;
3324 struct i40e_vsi *main_vsi;
3325 int aq_ret = 0;
3326 int abs_vf_id;
3327
3328 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3329 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3330 aq_ret = -EINVAL;
3331 goto error_param;
3332 }
3333
3334 main_vsi = i40e_pf_get_main_vsi(pf);
3335 abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3336 i40e_notify_client_of_vf_msg(main_vsi, abs_vf_id, msg, msglen);
3337
3338 error_param:
3339 /* send the response to the VF */
3340 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_RDMA,
3341 aq_ret);
3342 }
3343
3344 /**
3345 * i40e_vc_rdma_qvmap_msg
3346 * @vf: pointer to the VF info
3347 * @msg: pointer to the msg buffer
3348 * @config: config qvmap or release it
3349 *
3350 * called from the VF for the iwarp msgs
3351 **/
i40e_vc_rdma_qvmap_msg(struct i40e_vf * vf,u8 * msg,bool config)3352 static int i40e_vc_rdma_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3353 {
3354 struct virtchnl_rdma_qvlist_info *qvlist_info =
3355 (struct virtchnl_rdma_qvlist_info *)msg;
3356 int aq_ret = 0;
3357
3358 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3359 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3360 aq_ret = -EINVAL;
3361 goto error_param;
3362 }
3363
3364 if (config) {
3365 if (i40e_config_rdma_qvlist(vf, qvlist_info))
3366 aq_ret = -EINVAL;
3367 } else {
3368 i40e_release_rdma_qvlist(vf);
3369 }
3370
3371 error_param:
3372 /* send the response to the VF */
3373 return i40e_vc_send_resp_to_vf(vf,
3374 config ? VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP :
3375 VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP,
3376 aq_ret);
3377 }
3378
3379 /**
3380 * i40e_vc_config_rss_key
3381 * @vf: pointer to the VF info
3382 * @msg: pointer to the msg buffer
3383 *
3384 * Configure the VF's RSS key
3385 **/
i40e_vc_config_rss_key(struct i40e_vf * vf,u8 * msg)3386 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3387 {
3388 struct virtchnl_rss_key *vrk =
3389 (struct virtchnl_rss_key *)msg;
3390 struct i40e_pf *pf = vf->pf;
3391 struct i40e_vsi *vsi = NULL;
3392 int aq_ret = 0;
3393
3394 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3395 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3396 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3397 aq_ret = -EINVAL;
3398 goto err;
3399 }
3400
3401 vsi = pf->vsi[vf->lan_vsi_idx];
3402 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3403 err:
3404 /* send the response to the VF */
3405 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3406 aq_ret);
3407 }
3408
3409 /**
3410 * i40e_vc_config_rss_lut
3411 * @vf: pointer to the VF info
3412 * @msg: pointer to the msg buffer
3413 *
3414 * Configure the VF's RSS LUT
3415 **/
i40e_vc_config_rss_lut(struct i40e_vf * vf,u8 * msg)3416 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3417 {
3418 struct virtchnl_rss_lut *vrl =
3419 (struct virtchnl_rss_lut *)msg;
3420 struct i40e_pf *pf = vf->pf;
3421 struct i40e_vsi *vsi = NULL;
3422 int aq_ret = 0;
3423 u16 i;
3424
3425 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3426 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3427 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3428 aq_ret = -EINVAL;
3429 goto err;
3430 }
3431
3432 for (i = 0; i < vrl->lut_entries; i++)
3433 if (vrl->lut[i] >= vf->num_queue_pairs) {
3434 aq_ret = -EINVAL;
3435 goto err;
3436 }
3437
3438 vsi = pf->vsi[vf->lan_vsi_idx];
3439 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3440 /* send the response to the VF */
3441 err:
3442 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3443 aq_ret);
3444 }
3445
3446 /**
3447 * i40e_vc_get_rss_hashcfg
3448 * @vf: pointer to the VF info
3449 * @msg: pointer to the msg buffer
3450 *
3451 * Return the RSS Hash configuration bits allowed by the hardware
3452 **/
i40e_vc_get_rss_hashcfg(struct i40e_vf * vf,u8 * msg)3453 static int i40e_vc_get_rss_hashcfg(struct i40e_vf *vf, u8 *msg)
3454 {
3455 struct virtchnl_rss_hashcfg *vrh = NULL;
3456 struct i40e_pf *pf = vf->pf;
3457 int aq_ret = 0;
3458 int len = 0;
3459
3460 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3461 aq_ret = -EINVAL;
3462 goto err;
3463 }
3464 len = sizeof(struct virtchnl_rss_hashcfg);
3465
3466 vrh = kzalloc(len, GFP_KERNEL);
3467 if (!vrh) {
3468 aq_ret = -ENOMEM;
3469 len = 0;
3470 goto err;
3471 }
3472 vrh->hashcfg = i40e_pf_get_default_rss_hashcfg(pf);
3473 err:
3474 /* send the response back to the VF */
3475 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HASHCFG_CAPS,
3476 aq_ret, (u8 *)vrh, len);
3477 kfree(vrh);
3478 return aq_ret;
3479 }
3480
3481 /**
3482 * i40e_vc_set_rss_hashcfg
3483 * @vf: pointer to the VF info
3484 * @msg: pointer to the msg buffer
3485 *
3486 * Set the RSS Hash configuration bits for the VF
3487 **/
i40e_vc_set_rss_hashcfg(struct i40e_vf * vf,u8 * msg)3488 static int i40e_vc_set_rss_hashcfg(struct i40e_vf *vf, u8 *msg)
3489 {
3490 struct virtchnl_rss_hashcfg *vrh =
3491 (struct virtchnl_rss_hashcfg *)msg;
3492 struct i40e_pf *pf = vf->pf;
3493 struct i40e_hw *hw = &pf->hw;
3494 int aq_ret = 0;
3495
3496 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3497 aq_ret = -EINVAL;
3498 goto err;
3499 }
3500 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id),
3501 (u32)vrh->hashcfg);
3502 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3503 (u32)(vrh->hashcfg >> 32));
3504
3505 /* send the response to the VF */
3506 err:
3507 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HASHCFG, aq_ret);
3508 }
3509
3510 /**
3511 * i40e_vc_enable_vlan_stripping
3512 * @vf: pointer to the VF info
3513 * @msg: pointer to the msg buffer
3514 *
3515 * Enable vlan header stripping for the VF
3516 **/
i40e_vc_enable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3517 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3518 {
3519 struct i40e_vsi *vsi;
3520 int aq_ret = 0;
3521
3522 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3523 aq_ret = -EINVAL;
3524 goto err;
3525 }
3526
3527 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3528 i40e_vlan_stripping_enable(vsi);
3529
3530 /* send the response to the VF */
3531 err:
3532 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3533 aq_ret);
3534 }
3535
3536 /**
3537 * i40e_vc_disable_vlan_stripping
3538 * @vf: pointer to the VF info
3539 * @msg: pointer to the msg buffer
3540 *
3541 * Disable vlan header stripping for the VF
3542 **/
i40e_vc_disable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3543 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3544 {
3545 struct i40e_vsi *vsi;
3546 int aq_ret = 0;
3547
3548 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3549 aq_ret = -EINVAL;
3550 goto err;
3551 }
3552
3553 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3554 i40e_vlan_stripping_disable(vsi);
3555
3556 /* send the response to the VF */
3557 err:
3558 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3559 aq_ret);
3560 }
3561
3562 /**
3563 * i40e_validate_cloud_filter
3564 * @vf: pointer to VF structure
3565 * @tc_filter: pointer to filter requested
3566 *
3567 * This function validates cloud filter programmed as TC filter for ADq
3568 **/
i40e_validate_cloud_filter(struct i40e_vf * vf,struct virtchnl_filter * tc_filter)3569 static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3570 struct virtchnl_filter *tc_filter)
3571 {
3572 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3573 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3574 struct i40e_pf *pf = vf->pf;
3575 struct i40e_vsi *vsi = NULL;
3576 struct i40e_mac_filter *f;
3577 struct hlist_node *h;
3578 bool found = false;
3579 int bkt;
3580
3581 if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) {
3582 dev_info(&pf->pdev->dev,
3583 "VF %d: ADQ doesn't support this action (%d)\n",
3584 vf->vf_id, tc_filter->action);
3585 goto err;
3586 }
3587
3588 /* action_meta is TC number here to which the filter is applied */
3589 if (!tc_filter->action_meta ||
3590 tc_filter->action_meta > vf->num_tc) {
3591 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3592 vf->vf_id, tc_filter->action_meta);
3593 goto err;
3594 }
3595
3596 /* Check filter if it's programmed for advanced mode or basic mode.
3597 * There are two ADq modes (for VF only),
3598 * 1. Basic mode: intended to allow as many filter options as possible
3599 * to be added to a VF in Non-trusted mode. Main goal is
3600 * to add filters to its own MAC and VLAN id.
3601 * 2. Advanced mode: is for allowing filters to be applied other than
3602 * its own MAC or VLAN. This mode requires the VF to be
3603 * Trusted.
3604 */
3605 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3606 vsi = pf->vsi[vf->lan_vsi_idx];
3607 f = i40e_find_mac(vsi, data.dst_mac);
3608
3609 if (!f) {
3610 dev_info(&pf->pdev->dev,
3611 "Destination MAC %pM doesn't belong to VF %d\n",
3612 data.dst_mac, vf->vf_id);
3613 goto err;
3614 }
3615
3616 if (mask.vlan_id) {
3617 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3618 hlist) {
3619 if (f->vlan == ntohs(data.vlan_id)) {
3620 found = true;
3621 break;
3622 }
3623 }
3624 if (!found) {
3625 dev_info(&pf->pdev->dev,
3626 "VF %d doesn't have any VLAN id %u\n",
3627 vf->vf_id, ntohs(data.vlan_id));
3628 goto err;
3629 }
3630 }
3631 } else {
3632 /* Check if VF is trusted */
3633 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3634 dev_err(&pf->pdev->dev,
3635 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3636 vf->vf_id);
3637 return -EIO;
3638 }
3639 }
3640
3641 if (mask.dst_mac[0] & data.dst_mac[0]) {
3642 if (is_broadcast_ether_addr(data.dst_mac) ||
3643 is_zero_ether_addr(data.dst_mac)) {
3644 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3645 vf->vf_id, data.dst_mac);
3646 goto err;
3647 }
3648 }
3649
3650 if (mask.src_mac[0] & data.src_mac[0]) {
3651 if (is_broadcast_ether_addr(data.src_mac) ||
3652 is_zero_ether_addr(data.src_mac)) {
3653 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3654 vf->vf_id, data.src_mac);
3655 goto err;
3656 }
3657 }
3658
3659 if (mask.dst_port & data.dst_port) {
3660 if (!data.dst_port) {
3661 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3662 vf->vf_id);
3663 goto err;
3664 }
3665 }
3666
3667 if (mask.src_port & data.src_port) {
3668 if (!data.src_port) {
3669 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3670 vf->vf_id);
3671 goto err;
3672 }
3673 }
3674
3675 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3676 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3677 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3678 vf->vf_id);
3679 goto err;
3680 }
3681
3682 if (mask.vlan_id & data.vlan_id) {
3683 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3684 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3685 vf->vf_id);
3686 goto err;
3687 }
3688 }
3689
3690 return 0;
3691 err:
3692 return -EIO;
3693 }
3694
3695 /**
3696 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3697 * @vf: pointer to the VF info
3698 * @seid: seid of the vsi it is searching for
3699 **/
i40e_find_vsi_from_seid(struct i40e_vf * vf,u16 seid)3700 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3701 {
3702 struct i40e_pf *pf = vf->pf;
3703 struct i40e_vsi *vsi = NULL;
3704 int i;
3705
3706 for (i = 0; i < vf->num_tc ; i++) {
3707 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3708 if (vsi && vsi->seid == seid)
3709 return vsi;
3710 }
3711 return NULL;
3712 }
3713
3714 /**
3715 * i40e_del_all_cloud_filters
3716 * @vf: pointer to the VF info
3717 *
3718 * This function deletes all cloud filters
3719 **/
i40e_del_all_cloud_filters(struct i40e_vf * vf)3720 static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3721 {
3722 struct i40e_cloud_filter *cfilter = NULL;
3723 struct i40e_pf *pf = vf->pf;
3724 struct i40e_vsi *vsi = NULL;
3725 struct hlist_node *node;
3726 int ret;
3727
3728 hlist_for_each_entry_safe(cfilter, node,
3729 &vf->cloud_filter_list, cloud_node) {
3730 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3731
3732 if (!vsi) {
3733 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3734 vf->vf_id, cfilter->seid);
3735 continue;
3736 }
3737
3738 if (cfilter->dst_port)
3739 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3740 false);
3741 else
3742 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3743 if (ret)
3744 dev_err(&pf->pdev->dev,
3745 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3746 vf->vf_id, ERR_PTR(ret),
3747 libie_aq_str(pf->hw.aq.asq_last_status));
3748
3749 hlist_del(&cfilter->cloud_node);
3750 kfree(cfilter);
3751 vf->num_cloud_filters--;
3752 }
3753 }
3754
3755 /**
3756 * i40e_vc_del_cloud_filter
3757 * @vf: pointer to the VF info
3758 * @msg: pointer to the msg buffer
3759 *
3760 * This function deletes a cloud filter programmed as TC filter for ADq
3761 **/
i40e_vc_del_cloud_filter(struct i40e_vf * vf,u8 * msg)3762 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3763 {
3764 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3765 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3766 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3767 struct i40e_cloud_filter cfilter, *cf = NULL;
3768 struct i40e_pf *pf = vf->pf;
3769 struct i40e_vsi *vsi = NULL;
3770 struct hlist_node *node;
3771 int aq_ret = 0;
3772 int i, ret;
3773
3774 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3775 aq_ret = -EINVAL;
3776 goto err;
3777 }
3778
3779 if (!vf->adq_enabled) {
3780 dev_info(&pf->pdev->dev,
3781 "VF %d: ADq not enabled, can't apply cloud filter\n",
3782 vf->vf_id);
3783 aq_ret = -EINVAL;
3784 goto err;
3785 }
3786
3787 if (i40e_validate_cloud_filter(vf, vcf)) {
3788 dev_info(&pf->pdev->dev,
3789 "VF %d: Invalid input, can't apply cloud filter\n",
3790 vf->vf_id);
3791 aq_ret = -EINVAL;
3792 goto err;
3793 }
3794
3795 memset(&cfilter, 0, sizeof(cfilter));
3796 /* parse destination mac address */
3797 for (i = 0; i < ETH_ALEN; i++)
3798 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3799
3800 /* parse source mac address */
3801 for (i = 0; i < ETH_ALEN; i++)
3802 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3803
3804 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3805 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3806 cfilter.src_port = mask.src_port & tcf.src_port;
3807
3808 switch (vcf->flow_type) {
3809 case VIRTCHNL_TCP_V4_FLOW:
3810 cfilter.n_proto = ETH_P_IP;
3811 if (mask.dst_ip[0] & tcf.dst_ip[0])
3812 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3813 ARRAY_SIZE(tcf.dst_ip));
3814 else if (mask.src_ip[0] & tcf.dst_ip[0])
3815 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3816 ARRAY_SIZE(tcf.dst_ip));
3817 break;
3818 case VIRTCHNL_TCP_V6_FLOW:
3819 cfilter.n_proto = ETH_P_IPV6;
3820 if (mask.dst_ip[3] & tcf.dst_ip[3])
3821 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3822 sizeof(cfilter.ip.v6.dst_ip6));
3823 if (mask.src_ip[3] & tcf.src_ip[3])
3824 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3825 sizeof(cfilter.ip.v6.src_ip6));
3826 break;
3827 default:
3828 /* TC filter can be configured based on different combinations
3829 * and in this case IP is not a part of filter config
3830 */
3831 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3832 vf->vf_id);
3833 }
3834
3835 /* get the vsi to which the tc belongs to */
3836 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3837 cfilter.seid = vsi->seid;
3838 cfilter.flags = vcf->field_flags;
3839
3840 /* Deleting TC filter */
3841 if (tcf.dst_port)
3842 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3843 else
3844 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3845 if (ret) {
3846 dev_err(&pf->pdev->dev,
3847 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3848 vf->vf_id, ERR_PTR(ret),
3849 libie_aq_str(pf->hw.aq.asq_last_status));
3850 goto err;
3851 }
3852
3853 hlist_for_each_entry_safe(cf, node,
3854 &vf->cloud_filter_list, cloud_node) {
3855 if (cf->seid != cfilter.seid)
3856 continue;
3857 if (mask.dst_port)
3858 if (cfilter.dst_port != cf->dst_port)
3859 continue;
3860 if (mask.dst_mac[0])
3861 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3862 continue;
3863 /* for ipv4 data to be valid, only first byte of mask is set */
3864 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3865 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3866 ARRAY_SIZE(tcf.dst_ip)))
3867 continue;
3868 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3869 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3870 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3871 sizeof(cfilter.ip.v6.src_ip6)))
3872 continue;
3873 if (mask.vlan_id)
3874 if (cfilter.vlan_id != cf->vlan_id)
3875 continue;
3876
3877 hlist_del(&cf->cloud_node);
3878 kfree(cf);
3879 vf->num_cloud_filters--;
3880 }
3881
3882 err:
3883 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3884 aq_ret);
3885 }
3886
3887 /**
3888 * i40e_vc_add_cloud_filter
3889 * @vf: pointer to the VF info
3890 * @msg: pointer to the msg buffer
3891 *
3892 * This function adds a cloud filter programmed as TC filter for ADq
3893 **/
i40e_vc_add_cloud_filter(struct i40e_vf * vf,u8 * msg)3894 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3895 {
3896 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3897 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3898 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3899 struct i40e_cloud_filter *cfilter = NULL;
3900 struct i40e_pf *pf = vf->pf;
3901 struct i40e_vsi *vsi = NULL;
3902 int aq_ret = 0;
3903 int i;
3904
3905 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3906 aq_ret = -EINVAL;
3907 goto err_out;
3908 }
3909
3910 if (!vf->adq_enabled) {
3911 dev_info(&pf->pdev->dev,
3912 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3913 vf->vf_id);
3914 aq_ret = -EINVAL;
3915 goto err_out;
3916 }
3917
3918 if (i40e_validate_cloud_filter(vf, vcf)) {
3919 dev_info(&pf->pdev->dev,
3920 "VF %d: Invalid input/s, can't apply cloud filter\n",
3921 vf->vf_id);
3922 aq_ret = -EINVAL;
3923 goto err_out;
3924 }
3925
3926 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3927 if (!cfilter) {
3928 aq_ret = -ENOMEM;
3929 goto err_out;
3930 }
3931
3932 /* parse destination mac address */
3933 for (i = 0; i < ETH_ALEN; i++)
3934 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3935
3936 /* parse source mac address */
3937 for (i = 0; i < ETH_ALEN; i++)
3938 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3939
3940 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3941 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3942 cfilter->src_port = mask.src_port & tcf.src_port;
3943
3944 switch (vcf->flow_type) {
3945 case VIRTCHNL_TCP_V4_FLOW:
3946 cfilter->n_proto = ETH_P_IP;
3947 if (mask.dst_ip[0] & tcf.dst_ip[0])
3948 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3949 ARRAY_SIZE(tcf.dst_ip));
3950 else if (mask.src_ip[0] & tcf.dst_ip[0])
3951 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3952 ARRAY_SIZE(tcf.dst_ip));
3953 break;
3954 case VIRTCHNL_TCP_V6_FLOW:
3955 cfilter->n_proto = ETH_P_IPV6;
3956 if (mask.dst_ip[3] & tcf.dst_ip[3])
3957 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3958 sizeof(cfilter->ip.v6.dst_ip6));
3959 if (mask.src_ip[3] & tcf.src_ip[3])
3960 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3961 sizeof(cfilter->ip.v6.src_ip6));
3962 break;
3963 default:
3964 /* TC filter can be configured based on different combinations
3965 * and in this case IP is not a part of filter config
3966 */
3967 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3968 vf->vf_id);
3969 }
3970
3971 /* get the VSI to which the TC belongs to */
3972 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3973 cfilter->seid = vsi->seid;
3974 cfilter->flags = vcf->field_flags;
3975
3976 /* Adding cloud filter programmed as TC filter */
3977 if (tcf.dst_port)
3978 aq_ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3979 else
3980 aq_ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3981 if (aq_ret) {
3982 dev_err(&pf->pdev->dev,
3983 "VF %d: Failed to add cloud filter, err %pe aq_err %s\n",
3984 vf->vf_id, ERR_PTR(aq_ret),
3985 libie_aq_str(pf->hw.aq.asq_last_status));
3986 goto err_free;
3987 }
3988
3989 INIT_HLIST_NODE(&cfilter->cloud_node);
3990 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3991 /* release the pointer passing it to the collection */
3992 cfilter = NULL;
3993 vf->num_cloud_filters++;
3994 err_free:
3995 kfree(cfilter);
3996 err_out:
3997 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
3998 aq_ret);
3999 }
4000
4001 /**
4002 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
4003 * @vf: pointer to the VF info
4004 * @msg: pointer to the msg buffer
4005 **/
i40e_vc_add_qch_msg(struct i40e_vf * vf,u8 * msg)4006 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
4007 {
4008 struct virtchnl_tc_info *tci =
4009 (struct virtchnl_tc_info *)msg;
4010 struct i40e_pf *pf = vf->pf;
4011 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4012 int i, adq_request_qps = 0;
4013 int aq_ret = 0;
4014 u64 speed = 0;
4015
4016 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4017 aq_ret = -EINVAL;
4018 goto err;
4019 }
4020
4021 /* ADq cannot be applied if spoof check is ON */
4022 if (vf->spoofchk) {
4023 dev_err(&pf->pdev->dev,
4024 "Spoof check is ON, turn it OFF to enable ADq\n");
4025 aq_ret = -EINVAL;
4026 goto err;
4027 }
4028
4029 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
4030 dev_err(&pf->pdev->dev,
4031 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
4032 vf->vf_id);
4033 aq_ret = -EINVAL;
4034 goto err;
4035 }
4036
4037 /* max number of traffic classes for VF currently capped at 4 */
4038 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
4039 dev_err(&pf->pdev->dev,
4040 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
4041 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
4042 aq_ret = -EINVAL;
4043 goto err;
4044 }
4045
4046 /* validate queues for each TC */
4047 for (i = 0; i < tci->num_tc; i++)
4048 if (!tci->list[i].count ||
4049 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
4050 dev_err(&pf->pdev->dev,
4051 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
4052 vf->vf_id, i, tci->list[i].count,
4053 I40E_DEFAULT_QUEUES_PER_VF);
4054 aq_ret = -EINVAL;
4055 goto err;
4056 }
4057
4058 /* need Max VF queues but already have default number of queues */
4059 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
4060
4061 if (pf->queues_left < adq_request_qps) {
4062 dev_err(&pf->pdev->dev,
4063 "No queues left to allocate to VF %d\n",
4064 vf->vf_id);
4065 aq_ret = -EINVAL;
4066 goto err;
4067 } else {
4068 /* we need to allocate max VF queues to enable ADq so as to
4069 * make sure ADq enabled VF always gets back queues when it
4070 * goes through a reset.
4071 */
4072 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
4073 }
4074
4075 /* get link speed in MB to validate rate limit */
4076 speed = i40e_vc_link_speed2mbps(ls->link_speed);
4077 if (speed == SPEED_UNKNOWN) {
4078 dev_err(&pf->pdev->dev,
4079 "Cannot detect link speed\n");
4080 aq_ret = -EINVAL;
4081 goto err;
4082 }
4083
4084 /* parse data from the queue channel info */
4085 vf->num_tc = tci->num_tc;
4086 for (i = 0; i < vf->num_tc; i++) {
4087 if (tci->list[i].max_tx_rate) {
4088 if (tci->list[i].max_tx_rate > speed) {
4089 dev_err(&pf->pdev->dev,
4090 "Invalid max tx rate %llu specified for VF %d.",
4091 tci->list[i].max_tx_rate,
4092 vf->vf_id);
4093 aq_ret = -EINVAL;
4094 goto err;
4095 } else {
4096 vf->ch[i].max_tx_rate =
4097 tci->list[i].max_tx_rate;
4098 }
4099 }
4100 vf->ch[i].num_qps = tci->list[i].count;
4101 }
4102
4103 /* set this flag only after making sure all inputs are sane */
4104 vf->adq_enabled = true;
4105
4106 /* reset the VF in order to allocate resources */
4107 i40e_vc_reset_vf(vf, true);
4108
4109 return 0;
4110
4111 /* send the response to the VF */
4112 err:
4113 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
4114 aq_ret);
4115 }
4116
4117 /**
4118 * i40e_vc_del_qch_msg
4119 * @vf: pointer to the VF info
4120 * @msg: pointer to the msg buffer
4121 **/
i40e_vc_del_qch_msg(struct i40e_vf * vf,u8 * msg)4122 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
4123 {
4124 struct i40e_pf *pf = vf->pf;
4125 int aq_ret = 0;
4126
4127 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4128 aq_ret = -EINVAL;
4129 goto err;
4130 }
4131
4132 if (vf->adq_enabled) {
4133 i40e_del_all_cloud_filters(vf);
4134 i40e_del_qch(vf);
4135 vf->adq_enabled = false;
4136 vf->num_tc = 0;
4137 dev_info(&pf->pdev->dev,
4138 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
4139 vf->vf_id);
4140 } else {
4141 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
4142 vf->vf_id);
4143 aq_ret = -EINVAL;
4144 }
4145
4146 /* reset the VF in order to allocate resources */
4147 i40e_vc_reset_vf(vf, true);
4148
4149 return 0;
4150
4151 err:
4152 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
4153 aq_ret);
4154 }
4155
4156 /**
4157 * i40e_vc_process_vf_msg
4158 * @pf: pointer to the PF structure
4159 * @vf_id: source VF id
4160 * @v_opcode: operation code
4161 * @v_retval: unused return value code
4162 * @msg: pointer to the msg buffer
4163 * @msglen: msg length
4164 *
4165 * called from the common aeq/arq handler to
4166 * process request from VF
4167 **/
i40e_vc_process_vf_msg(struct i40e_pf * pf,s16 vf_id,u32 v_opcode,u32 __always_unused v_retval,u8 * msg,u16 msglen)4168 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4169 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4170 {
4171 struct i40e_hw *hw = &pf->hw;
4172 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4173 struct i40e_vf *vf;
4174 int ret;
4175
4176 pf->vf_aq_requests++;
4177 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4178 return -EINVAL;
4179 vf = &(pf->vf[local_vf_id]);
4180
4181 /* Check if VF is disabled. */
4182 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4183 return -EINVAL;
4184
4185 /* perform basic checks on the msg */
4186 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4187
4188 if (ret) {
4189 i40e_vc_send_resp_to_vf(vf, v_opcode, -EINVAL);
4190 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4191 local_vf_id, v_opcode, msglen);
4192 return ret;
4193 }
4194
4195 switch (v_opcode) {
4196 case VIRTCHNL_OP_VERSION:
4197 ret = i40e_vc_get_version_msg(vf, msg);
4198 break;
4199 case VIRTCHNL_OP_GET_VF_RESOURCES:
4200 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4201 i40e_vc_notify_vf_link_state(vf);
4202 break;
4203 case VIRTCHNL_OP_RESET_VF:
4204 i40e_vc_reset_vf(vf, false);
4205 ret = 0;
4206 break;
4207 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4208 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4209 break;
4210 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4211 ret = i40e_vc_config_queues_msg(vf, msg);
4212 break;
4213 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4214 ret = i40e_vc_config_irq_map_msg(vf, msg);
4215 break;
4216 case VIRTCHNL_OP_ENABLE_QUEUES:
4217 ret = i40e_vc_enable_queues_msg(vf, msg);
4218 i40e_vc_notify_vf_link_state(vf);
4219 break;
4220 case VIRTCHNL_OP_DISABLE_QUEUES:
4221 ret = i40e_vc_disable_queues_msg(vf, msg);
4222 break;
4223 case VIRTCHNL_OP_ADD_ETH_ADDR:
4224 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4225 break;
4226 case VIRTCHNL_OP_DEL_ETH_ADDR:
4227 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4228 break;
4229 case VIRTCHNL_OP_ADD_VLAN:
4230 ret = i40e_vc_add_vlan_msg(vf, msg);
4231 break;
4232 case VIRTCHNL_OP_DEL_VLAN:
4233 ret = i40e_vc_remove_vlan_msg(vf, msg);
4234 break;
4235 case VIRTCHNL_OP_GET_STATS:
4236 ret = i40e_vc_get_stats_msg(vf, msg);
4237 break;
4238 case VIRTCHNL_OP_RDMA:
4239 ret = i40e_vc_rdma_msg(vf, msg, msglen);
4240 break;
4241 case VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP:
4242 ret = i40e_vc_rdma_qvmap_msg(vf, msg, true);
4243 break;
4244 case VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP:
4245 ret = i40e_vc_rdma_qvmap_msg(vf, msg, false);
4246 break;
4247 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4248 ret = i40e_vc_config_rss_key(vf, msg);
4249 break;
4250 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4251 ret = i40e_vc_config_rss_lut(vf, msg);
4252 break;
4253 case VIRTCHNL_OP_GET_RSS_HASHCFG_CAPS:
4254 ret = i40e_vc_get_rss_hashcfg(vf, msg);
4255 break;
4256 case VIRTCHNL_OP_SET_RSS_HASHCFG:
4257 ret = i40e_vc_set_rss_hashcfg(vf, msg);
4258 break;
4259 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4260 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4261 break;
4262 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4263 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4264 break;
4265 case VIRTCHNL_OP_REQUEST_QUEUES:
4266 ret = i40e_vc_request_queues_msg(vf, msg);
4267 break;
4268 case VIRTCHNL_OP_ENABLE_CHANNELS:
4269 ret = i40e_vc_add_qch_msg(vf, msg);
4270 break;
4271 case VIRTCHNL_OP_DISABLE_CHANNELS:
4272 ret = i40e_vc_del_qch_msg(vf, msg);
4273 break;
4274 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4275 ret = i40e_vc_add_cloud_filter(vf, msg);
4276 break;
4277 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4278 ret = i40e_vc_del_cloud_filter(vf, msg);
4279 break;
4280 case VIRTCHNL_OP_UNKNOWN:
4281 default:
4282 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4283 v_opcode, local_vf_id);
4284 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4285 -EOPNOTSUPP);
4286 break;
4287 }
4288
4289 return ret;
4290 }
4291
4292 /**
4293 * i40e_vc_process_vflr_event
4294 * @pf: pointer to the PF structure
4295 *
4296 * called from the vlfr irq handler to
4297 * free up VF resources and state variables
4298 **/
i40e_vc_process_vflr_event(struct i40e_pf * pf)4299 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4300 {
4301 struct i40e_hw *hw = &pf->hw;
4302 u32 reg, reg_idx, bit_idx;
4303 struct i40e_vf *vf;
4304 int vf_id;
4305
4306 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4307 return 0;
4308
4309 /* Re-enable the VFLR interrupt cause here, before looking for which
4310 * VF got reset. Otherwise, if another VF gets a reset while the
4311 * first one is being processed, that interrupt will be lost, and
4312 * that VF will be stuck in reset forever.
4313 */
4314 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4315 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4316 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4317 i40e_flush(hw);
4318
4319 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4320 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4321 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4322 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4323 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4324 vf = &pf->vf[vf_id];
4325 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4326 if (reg & BIT(bit_idx))
4327 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4328 if (!i40e_reset_vf(vf, true)) {
4329 /* At least one VF did not finish resetting, retry next time */
4330 set_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4331 }
4332 }
4333
4334 return 0;
4335 }
4336
4337 /**
4338 * i40e_validate_vf
4339 * @pf: the physical function
4340 * @vf_id: VF identifier
4341 *
4342 * Check that the VF is enabled and the VSI exists.
4343 *
4344 * Returns 0 on success, negative on failure
4345 **/
i40e_validate_vf(struct i40e_pf * pf,int vf_id)4346 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4347 {
4348 struct i40e_vsi *vsi;
4349 struct i40e_vf *vf;
4350 int ret = 0;
4351
4352 if (vf_id >= pf->num_alloc_vfs) {
4353 dev_err(&pf->pdev->dev,
4354 "Invalid VF Identifier %d\n", vf_id);
4355 ret = -EINVAL;
4356 goto err_out;
4357 }
4358 vf = &pf->vf[vf_id];
4359 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4360 if (!vsi)
4361 ret = -EINVAL;
4362 err_out:
4363 return ret;
4364 }
4365
4366 /**
4367 * i40e_check_vf_init_timeout
4368 * @vf: the virtual function
4369 *
4370 * Check that the VF's initialization was successfully done and if not
4371 * wait up to 300ms for its finish.
4372 *
4373 * Returns true when VF is initialized, false on timeout
4374 **/
i40e_check_vf_init_timeout(struct i40e_vf * vf)4375 static bool i40e_check_vf_init_timeout(struct i40e_vf *vf)
4376 {
4377 int i;
4378
4379 /* When the VF is resetting wait until it is done.
4380 * It can take up to 200 milliseconds, but wait for
4381 * up to 300 milliseconds to be safe.
4382 */
4383 for (i = 0; i < 15; i++) {
4384 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4385 return true;
4386 msleep(20);
4387 }
4388
4389 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4390 dev_err(&vf->pf->pdev->dev,
4391 "VF %d still in reset. Try again.\n", vf->vf_id);
4392 return false;
4393 }
4394
4395 return true;
4396 }
4397
4398 /**
4399 * i40e_ndo_set_vf_mac
4400 * @netdev: network interface device structure
4401 * @vf_id: VF identifier
4402 * @mac: mac address
4403 *
4404 * program VF mac address
4405 **/
i40e_ndo_set_vf_mac(struct net_device * netdev,int vf_id,u8 * mac)4406 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4407 {
4408 struct i40e_netdev_priv *np = netdev_priv(netdev);
4409 struct i40e_vsi *vsi = np->vsi;
4410 struct i40e_pf *pf = vsi->back;
4411 struct i40e_mac_filter *f;
4412 struct i40e_vf *vf;
4413 int ret = 0;
4414 struct hlist_node *h;
4415 int bkt;
4416
4417 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4418 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4419 return -EAGAIN;
4420 }
4421
4422 /* validate the request */
4423 ret = i40e_validate_vf(pf, vf_id);
4424 if (ret)
4425 goto error_param;
4426
4427 vf = &pf->vf[vf_id];
4428 if (!i40e_check_vf_init_timeout(vf)) {
4429 ret = -EAGAIN;
4430 goto error_param;
4431 }
4432 vsi = pf->vsi[vf->lan_vsi_idx];
4433
4434 if (is_multicast_ether_addr(mac)) {
4435 dev_err(&pf->pdev->dev,
4436 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4437 ret = -EINVAL;
4438 goto error_param;
4439 }
4440
4441 /* Lock once because below invoked function add/del_filter requires
4442 * mac_filter_hash_lock to be held
4443 */
4444 spin_lock_bh(&vsi->mac_filter_hash_lock);
4445
4446 /* delete the temporary mac address */
4447 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4448 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4449
4450 /* Delete all the filters for this VSI - we're going to kill it
4451 * anyway.
4452 */
4453 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4454 __i40e_del_filter(vsi, f);
4455
4456 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4457
4458 /* program mac filter */
4459 if (i40e_sync_vsi_filters(vsi)) {
4460 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4461 ret = -EIO;
4462 goto error_param;
4463 }
4464 ether_addr_copy(vf->default_lan_addr.addr, mac);
4465
4466 if (is_zero_ether_addr(mac)) {
4467 vf->pf_set_mac = false;
4468 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4469 } else {
4470 vf->pf_set_mac = true;
4471 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4472 mac, vf_id);
4473 }
4474
4475 /* Force the VF interface down so it has to bring up with new MAC
4476 * address
4477 */
4478 i40e_vc_reset_vf(vf, true);
4479 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4480
4481 error_param:
4482 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4483 return ret;
4484 }
4485
4486 /**
4487 * i40e_ndo_set_vf_port_vlan
4488 * @netdev: network interface device structure
4489 * @vf_id: VF identifier
4490 * @vlan_id: mac address
4491 * @qos: priority setting
4492 * @vlan_proto: vlan protocol
4493 *
4494 * program VF vlan id and/or qos
4495 **/
i40e_ndo_set_vf_port_vlan(struct net_device * netdev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)4496 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4497 u16 vlan_id, u8 qos, __be16 vlan_proto)
4498 {
4499 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4500 struct i40e_netdev_priv *np = netdev_priv(netdev);
4501 bool allmulti = false, alluni = false;
4502 struct i40e_pf *pf = np->vsi->back;
4503 struct i40e_vsi *vsi;
4504 struct i40e_vf *vf;
4505 int ret = 0;
4506
4507 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4508 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4509 return -EAGAIN;
4510 }
4511
4512 /* validate the request */
4513 ret = i40e_validate_vf(pf, vf_id);
4514 if (ret)
4515 goto error_pvid;
4516
4517 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4518 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4519 ret = -EINVAL;
4520 goto error_pvid;
4521 }
4522
4523 if (vlan_proto != htons(ETH_P_8021Q)) {
4524 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4525 ret = -EPROTONOSUPPORT;
4526 goto error_pvid;
4527 }
4528
4529 vf = &pf->vf[vf_id];
4530 if (!i40e_check_vf_init_timeout(vf)) {
4531 ret = -EAGAIN;
4532 goto error_pvid;
4533 }
4534 vsi = pf->vsi[vf->lan_vsi_idx];
4535
4536 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4537 /* duplicate request, so just return success */
4538 goto error_pvid;
4539
4540 i40e_vlan_stripping_enable(vsi);
4541
4542 /* Locked once because multiple functions below iterate list */
4543 spin_lock_bh(&vsi->mac_filter_hash_lock);
4544
4545 /* Check for condition where there was already a port VLAN ID
4546 * filter set and now it is being deleted by setting it to zero.
4547 * Additionally check for the condition where there was a port
4548 * VLAN but now there is a new and different port VLAN being set.
4549 * Before deleting all the old VLAN filters we must add new ones
4550 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4551 * MAC addresses deleted.
4552 */
4553 if ((!(vlan_id || qos) ||
4554 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4555 vsi->info.pvid) {
4556 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4557 if (ret) {
4558 dev_info(&vsi->back->pdev->dev,
4559 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4560 vsi->back->hw.aq.asq_last_status);
4561 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4562 goto error_pvid;
4563 }
4564 }
4565
4566 if (vsi->info.pvid) {
4567 /* remove all filters on the old VLAN */
4568 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4569 VLAN_VID_MASK));
4570 }
4571
4572 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4573
4574 /* disable promisc modes in case they were enabled */
4575 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4576 allmulti, alluni);
4577 if (ret) {
4578 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4579 goto error_pvid;
4580 }
4581
4582 if (vlan_id || qos)
4583 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4584 else
4585 i40e_vsi_remove_pvid(vsi);
4586 spin_lock_bh(&vsi->mac_filter_hash_lock);
4587
4588 if (vlan_id) {
4589 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4590 vlan_id, qos, vf_id);
4591
4592 /* add new VLAN filter for each MAC */
4593 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4594 if (ret) {
4595 dev_info(&vsi->back->pdev->dev,
4596 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4597 vsi->back->hw.aq.asq_last_status);
4598 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4599 goto error_pvid;
4600 }
4601
4602 /* remove the previously added non-VLAN MAC filters */
4603 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4604 }
4605
4606 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4607
4608 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4609 alluni = true;
4610
4611 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4612 allmulti = true;
4613
4614 /* Schedule the worker thread to take care of applying changes */
4615 i40e_service_event_schedule(vsi->back);
4616
4617 if (ret) {
4618 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4619 goto error_pvid;
4620 }
4621
4622 /* The Port VLAN needs to be saved across resets the same as the
4623 * default LAN MAC address.
4624 */
4625 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4626
4627 i40e_vc_reset_vf(vf, true);
4628 /* During reset the VF got a new VSI, so refresh a pointer. */
4629 vsi = pf->vsi[vf->lan_vsi_idx];
4630
4631 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4632 if (ret) {
4633 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4634 goto error_pvid;
4635 }
4636
4637 ret = 0;
4638
4639 error_pvid:
4640 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4641 return ret;
4642 }
4643
4644 /**
4645 * i40e_ndo_set_vf_bw
4646 * @netdev: network interface device structure
4647 * @vf_id: VF identifier
4648 * @min_tx_rate: Minimum Tx rate
4649 * @max_tx_rate: Maximum Tx rate
4650 *
4651 * configure VF Tx rate
4652 **/
i40e_ndo_set_vf_bw(struct net_device * netdev,int vf_id,int min_tx_rate,int max_tx_rate)4653 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4654 int max_tx_rate)
4655 {
4656 struct i40e_netdev_priv *np = netdev_priv(netdev);
4657 struct i40e_pf *pf = np->vsi->back;
4658 struct i40e_vsi *vsi;
4659 struct i40e_vf *vf;
4660 int ret = 0;
4661
4662 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4663 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4664 return -EAGAIN;
4665 }
4666
4667 /* validate the request */
4668 ret = i40e_validate_vf(pf, vf_id);
4669 if (ret)
4670 goto error;
4671
4672 if (min_tx_rate) {
4673 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4674 min_tx_rate, vf_id);
4675 ret = -EINVAL;
4676 goto error;
4677 }
4678
4679 vf = &pf->vf[vf_id];
4680 if (!i40e_check_vf_init_timeout(vf)) {
4681 ret = -EAGAIN;
4682 goto error;
4683 }
4684 vsi = pf->vsi[vf->lan_vsi_idx];
4685
4686 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4687 if (ret)
4688 goto error;
4689
4690 vf->tx_rate = max_tx_rate;
4691 error:
4692 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4693 return ret;
4694 }
4695
4696 /**
4697 * i40e_ndo_get_vf_config
4698 * @netdev: network interface device structure
4699 * @vf_id: VF identifier
4700 * @ivi: VF configuration structure
4701 *
4702 * return VF configuration
4703 **/
i40e_ndo_get_vf_config(struct net_device * netdev,int vf_id,struct ifla_vf_info * ivi)4704 int i40e_ndo_get_vf_config(struct net_device *netdev,
4705 int vf_id, struct ifla_vf_info *ivi)
4706 {
4707 struct i40e_netdev_priv *np = netdev_priv(netdev);
4708 struct i40e_vsi *vsi = np->vsi;
4709 struct i40e_pf *pf = vsi->back;
4710 struct i40e_vf *vf;
4711 int ret = 0;
4712
4713 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4714 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4715 return -EAGAIN;
4716 }
4717
4718 /* validate the request */
4719 ret = i40e_validate_vf(pf, vf_id);
4720 if (ret)
4721 goto error_param;
4722
4723 vf = &pf->vf[vf_id];
4724 /* first vsi is always the LAN vsi */
4725 vsi = pf->vsi[vf->lan_vsi_idx];
4726 if (!vsi) {
4727 ret = -ENOENT;
4728 goto error_param;
4729 }
4730
4731 ivi->vf = vf_id;
4732
4733 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4734
4735 ivi->max_tx_rate = vf->tx_rate;
4736 ivi->min_tx_rate = 0;
4737 ivi->vlan = le16_get_bits(vsi->info.pvid, I40E_VLAN_MASK);
4738 ivi->qos = le16_get_bits(vsi->info.pvid, I40E_PRIORITY_MASK);
4739 if (vf->link_forced == false)
4740 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4741 else if (vf->link_up == true)
4742 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4743 else
4744 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4745 ivi->spoofchk = vf->spoofchk;
4746 ivi->trusted = vf->trusted;
4747 ret = 0;
4748
4749 error_param:
4750 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4751 return ret;
4752 }
4753
4754 /**
4755 * i40e_ndo_set_vf_link_state
4756 * @netdev: network interface device structure
4757 * @vf_id: VF identifier
4758 * @link: required link state
4759 *
4760 * Set the link state of a specified VF, regardless of physical link state
4761 **/
i40e_ndo_set_vf_link_state(struct net_device * netdev,int vf_id,int link)4762 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4763 {
4764 struct i40e_netdev_priv *np = netdev_priv(netdev);
4765 struct i40e_pf *pf = np->vsi->back;
4766 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4767 struct virtchnl_pf_event pfe;
4768 struct i40e_hw *hw = &pf->hw;
4769 struct i40e_vsi *vsi;
4770 unsigned long q_map;
4771 struct i40e_vf *vf;
4772 int abs_vf_id;
4773 int ret = 0;
4774 int tmp;
4775
4776 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4777 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4778 return -EAGAIN;
4779 }
4780
4781 /* validate the request */
4782 if (vf_id >= pf->num_alloc_vfs) {
4783 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4784 ret = -EINVAL;
4785 goto error_out;
4786 }
4787
4788 vf = &pf->vf[vf_id];
4789 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4790
4791 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4792 pfe.severity = PF_EVENT_SEVERITY_INFO;
4793
4794 switch (link) {
4795 case IFLA_VF_LINK_STATE_AUTO:
4796 vf->link_forced = false;
4797 vf->is_disabled_from_host = false;
4798 /* reset needed to reinit VF resources */
4799 i40e_vc_reset_vf(vf, true);
4800 i40e_set_vf_link_state(vf, &pfe, ls);
4801 break;
4802 case IFLA_VF_LINK_STATE_ENABLE:
4803 vf->link_forced = true;
4804 vf->link_up = true;
4805 vf->is_disabled_from_host = false;
4806 /* reset needed to reinit VF resources */
4807 i40e_vc_reset_vf(vf, true);
4808 i40e_set_vf_link_state(vf, &pfe, ls);
4809 break;
4810 case IFLA_VF_LINK_STATE_DISABLE:
4811 vf->link_forced = true;
4812 vf->link_up = false;
4813 i40e_set_vf_link_state(vf, &pfe, ls);
4814
4815 vsi = pf->vsi[vf->lan_vsi_idx];
4816 q_map = BIT(vsi->num_queue_pairs) - 1;
4817
4818 vf->is_disabled_from_host = true;
4819
4820 /* Try to stop both Tx&Rx rings even if one of the calls fails
4821 * to ensure we stop the rings even in case of errors.
4822 * If any of them returns with an error then the first
4823 * error that occurred will be returned.
4824 */
4825 tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false);
4826 ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false);
4827
4828 ret = tmp ? tmp : ret;
4829 break;
4830 default:
4831 ret = -EINVAL;
4832 goto error_out;
4833 }
4834 /* Notify the VF of its new link state */
4835 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4836 0, (u8 *)&pfe, sizeof(pfe), NULL);
4837
4838 error_out:
4839 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4840 return ret;
4841 }
4842
4843 /**
4844 * i40e_ndo_set_vf_spoofchk
4845 * @netdev: network interface device structure
4846 * @vf_id: VF identifier
4847 * @enable: flag to enable or disable feature
4848 *
4849 * Enable or disable VF spoof checking
4850 **/
i40e_ndo_set_vf_spoofchk(struct net_device * netdev,int vf_id,bool enable)4851 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4852 {
4853 struct i40e_netdev_priv *np = netdev_priv(netdev);
4854 struct i40e_vsi *vsi = np->vsi;
4855 struct i40e_pf *pf = vsi->back;
4856 struct i40e_vsi_context ctxt;
4857 struct i40e_hw *hw = &pf->hw;
4858 struct i40e_vf *vf;
4859 int ret = 0;
4860
4861 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4862 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4863 return -EAGAIN;
4864 }
4865
4866 /* validate the request */
4867 if (vf_id >= pf->num_alloc_vfs) {
4868 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4869 ret = -EINVAL;
4870 goto out;
4871 }
4872
4873 vf = &(pf->vf[vf_id]);
4874 if (!i40e_check_vf_init_timeout(vf)) {
4875 ret = -EAGAIN;
4876 goto out;
4877 }
4878
4879 if (enable == vf->spoofchk)
4880 goto out;
4881
4882 vf->spoofchk = enable;
4883 memset(&ctxt, 0, sizeof(ctxt));
4884 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4885 ctxt.pf_num = pf->hw.pf_id;
4886 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4887 if (enable)
4888 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4889 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4890 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4891 if (ret) {
4892 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4893 ret);
4894 ret = -EIO;
4895 }
4896 out:
4897 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4898 return ret;
4899 }
4900
4901 /**
4902 * i40e_ndo_set_vf_trust
4903 * @netdev: network interface device structure of the pf
4904 * @vf_id: VF identifier
4905 * @setting: trust setting
4906 *
4907 * Enable or disable VF trust setting
4908 **/
i40e_ndo_set_vf_trust(struct net_device * netdev,int vf_id,bool setting)4909 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4910 {
4911 struct i40e_netdev_priv *np = netdev_priv(netdev);
4912 struct i40e_pf *pf = np->vsi->back;
4913 struct i40e_vf *vf;
4914 int ret = 0;
4915
4916 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4917 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4918 return -EAGAIN;
4919 }
4920
4921 /* validate the request */
4922 if (vf_id >= pf->num_alloc_vfs) {
4923 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4924 ret = -EINVAL;
4925 goto out;
4926 }
4927
4928 if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
4929 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4930 ret = -EINVAL;
4931 goto out;
4932 }
4933
4934 vf = &pf->vf[vf_id];
4935
4936 if (setting == vf->trusted)
4937 goto out;
4938
4939 vf->trusted = setting;
4940
4941 /* request PF to sync mac/vlan filters for the VF */
4942 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
4943 pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
4944
4945 i40e_vc_reset_vf(vf, true);
4946 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4947 vf_id, setting ? "" : "un");
4948
4949 if (vf->adq_enabled) {
4950 if (!vf->trusted) {
4951 dev_info(&pf->pdev->dev,
4952 "VF %u no longer Trusted, deleting all cloud filters\n",
4953 vf_id);
4954 i40e_del_all_cloud_filters(vf);
4955 }
4956 }
4957
4958 out:
4959 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4960 return ret;
4961 }
4962
4963 /**
4964 * i40e_get_vf_stats - populate some stats for the VF
4965 * @netdev: the netdev of the PF
4966 * @vf_id: the host OS identifier (0-127)
4967 * @vf_stats: pointer to the OS memory to be initialized
4968 */
i40e_get_vf_stats(struct net_device * netdev,int vf_id,struct ifla_vf_stats * vf_stats)4969 int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4970 struct ifla_vf_stats *vf_stats)
4971 {
4972 struct i40e_netdev_priv *np = netdev_priv(netdev);
4973 struct i40e_pf *pf = np->vsi->back;
4974 struct i40e_eth_stats *stats;
4975 struct i40e_vsi *vsi;
4976 struct i40e_vf *vf;
4977
4978 /* validate the request */
4979 if (i40e_validate_vf(pf, vf_id))
4980 return -EINVAL;
4981
4982 vf = &pf->vf[vf_id];
4983 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4984 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4985 return -EBUSY;
4986 }
4987
4988 vsi = pf->vsi[vf->lan_vsi_idx];
4989 if (!vsi)
4990 return -EINVAL;
4991
4992 i40e_update_eth_stats(vsi);
4993 stats = &vsi->eth_stats;
4994
4995 memset(vf_stats, 0, sizeof(*vf_stats));
4996
4997 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4998 stats->rx_multicast;
4999 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
5000 stats->tx_multicast;
5001 vf_stats->rx_bytes = stats->rx_bytes;
5002 vf_stats->tx_bytes = stats->tx_bytes;
5003 vf_stats->broadcast = stats->rx_broadcast;
5004 vf_stats->multicast = stats->rx_multicast;
5005 vf_stats->rx_dropped = stats->rx_discards + stats->rx_discards_other;
5006 vf_stats->tx_dropped = stats->tx_errors;
5007
5008 return 0;
5009 }
5010