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