1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4 #include "i40e.h"
5
6 /*********************notification routines***********************/
7
8 /**
9 * i40e_vc_vf_broadcast
10 * @pf: pointer to the PF structure
11 * @v_opcode: operation code
12 * @v_retval: return value
13 * @msg: pointer to the msg buffer
14 * @msglen: msg length
15 *
16 * send a message to all VFs on a given PF
17 **/
i40e_vc_vf_broadcast(struct i40e_pf * pf,enum virtchnl_ops v_opcode,int v_retval,u8 * msg,u16 msglen)18 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
19 enum virtchnl_ops v_opcode,
20 int v_retval, u8 *msg,
21 u16 msglen)
22 {
23 struct i40e_hw *hw = &pf->hw;
24 struct i40e_vf *vf = pf->vf;
25 int i;
26
27 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
28 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
29 /* Not all vfs are enabled so skip the ones that are not */
30 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
31 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
32 continue;
33
34 /* Ignore return value on purpose - a given VF may fail, but
35 * we need to keep going and send to all of them
36 */
37 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
38 msg, msglen, NULL);
39 }
40 }
41
42 /**
43 * i40e_vc_link_speed2mbps
44 * converts i40e_aq_link_speed to integer value of Mbps
45 * @link_speed: the speed to convert
46 *
47 * return the speed as direct value of Mbps.
48 **/
49 static u32
i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)50 i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)
51 {
52 switch (link_speed) {
53 case I40E_LINK_SPEED_100MB:
54 return SPEED_100;
55 case I40E_LINK_SPEED_1GB:
56 return SPEED_1000;
57 case I40E_LINK_SPEED_2_5GB:
58 return SPEED_2500;
59 case I40E_LINK_SPEED_5GB:
60 return SPEED_5000;
61 case I40E_LINK_SPEED_10GB:
62 return SPEED_10000;
63 case I40E_LINK_SPEED_20GB:
64 return SPEED_20000;
65 case I40E_LINK_SPEED_25GB:
66 return SPEED_25000;
67 case I40E_LINK_SPEED_40GB:
68 return SPEED_40000;
69 case I40E_LINK_SPEED_UNKNOWN:
70 return SPEED_UNKNOWN;
71 }
72 return SPEED_UNKNOWN;
73 }
74
75 /**
76 * i40e_set_vf_link_state
77 * @vf: pointer to the VF structure
78 * @pfe: pointer to PF event structure
79 * @ls: pointer to link status structure
80 *
81 * set a link state on a single vf
82 **/
i40e_set_vf_link_state(struct i40e_vf * vf,struct virtchnl_pf_event * pfe,struct i40e_link_status * ls)83 static void i40e_set_vf_link_state(struct i40e_vf *vf,
84 struct virtchnl_pf_event *pfe, struct i40e_link_status *ls)
85 {
86 u8 link_status = ls->link_info & I40E_AQ_LINK_UP;
87
88 if (vf->link_forced)
89 link_status = vf->link_up;
90
91 if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
92 pfe->event_data.link_event_adv.link_speed = link_status ?
93 i40e_vc_link_speed2mbps(ls->link_speed) : 0;
94 pfe->event_data.link_event_adv.link_status = link_status;
95 } else {
96 pfe->event_data.link_event.link_speed = link_status ?
97 i40e_virtchnl_link_speed(ls->link_speed) : 0;
98 pfe->event_data.link_event.link_status = link_status;
99 }
100 }
101
102 /**
103 * i40e_vc_notify_vf_link_state
104 * @vf: pointer to the VF structure
105 *
106 * send a link status message to a single VF
107 **/
i40e_vc_notify_vf_link_state(struct i40e_vf * vf)108 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
109 {
110 struct virtchnl_pf_event pfe;
111 struct i40e_pf *pf = vf->pf;
112 struct i40e_hw *hw = &pf->hw;
113 struct i40e_link_status *ls = &pf->hw.phy.link_info;
114 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
115
116 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
117 pfe.severity = PF_EVENT_SEVERITY_INFO;
118
119 i40e_set_vf_link_state(vf, &pfe, ls);
120
121 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
122 0, (u8 *)&pfe, sizeof(pfe), NULL);
123 }
124
125 /**
126 * i40e_vc_notify_link_state
127 * @pf: pointer to the PF structure
128 *
129 * send a link status message to all VFs on a given PF
130 **/
i40e_vc_notify_link_state(struct i40e_pf * pf)131 void i40e_vc_notify_link_state(struct i40e_pf *pf)
132 {
133 int i;
134
135 for (i = 0; i < pf->num_alloc_vfs; i++)
136 i40e_vc_notify_vf_link_state(&pf->vf[i]);
137 }
138
139 /**
140 * i40e_vc_notify_reset
141 * @pf: pointer to the PF structure
142 *
143 * indicate a pending reset to all VFs on a given PF
144 **/
i40e_vc_notify_reset(struct i40e_pf * pf)145 void i40e_vc_notify_reset(struct i40e_pf *pf)
146 {
147 struct virtchnl_pf_event pfe;
148
149 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
150 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
151 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
152 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
153 }
154
155 #ifdef CONFIG_PCI_IOV
i40e_restore_all_vfs_msi_state(struct pci_dev * pdev)156 void i40e_restore_all_vfs_msi_state(struct pci_dev *pdev)
157 {
158 u16 vf_id;
159 u16 pos;
160
161 /* Continue only if this is a PF */
162 if (!pdev->is_physfn)
163 return;
164
165 if (!pci_num_vf(pdev))
166 return;
167
168 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
169 if (pos) {
170 struct pci_dev *vf_dev = NULL;
171
172 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
173 while ((vf_dev = pci_get_device(pdev->vendor, vf_id, vf_dev))) {
174 if (vf_dev->is_virtfn && vf_dev->physfn == pdev)
175 pci_restore_msi_state(vf_dev);
176 }
177 }
178 }
179 #endif /* CONFIG_PCI_IOV */
180
181 /**
182 * i40e_vc_notify_vf_reset
183 * @vf: pointer to the VF structure
184 *
185 * indicate a pending reset to the given VF
186 **/
i40e_vc_notify_vf_reset(struct i40e_vf * vf)187 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
188 {
189 struct virtchnl_pf_event pfe;
190 int abs_vf_id;
191
192 /* validate the request */
193 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
194 return;
195
196 /* verify if the VF is in either init or active before proceeding */
197 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
198 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
199 return;
200
201 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
202
203 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
204 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
205 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
206 0, (u8 *)&pfe,
207 sizeof(struct virtchnl_pf_event), NULL);
208 }
209 /***********************misc routines*****************************/
210
211 /**
212 * i40e_vc_reset_vf
213 * @vf: pointer to the VF info
214 * @notify_vf: notify vf about reset or not
215 * Reset VF handler.
216 **/
i40e_vc_reset_vf(struct i40e_vf * vf,bool notify_vf)217 static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
218 {
219 struct i40e_pf *pf = vf->pf;
220 int i;
221
222 if (notify_vf)
223 i40e_vc_notify_vf_reset(vf);
224
225 /* We want to ensure that an actual reset occurs initiated after this
226 * function was called. However, we do not want to wait forever, so
227 * we'll give a reasonable time and print a message if we failed to
228 * ensure a reset.
229 */
230 for (i = 0; i < 20; i++) {
231 /* If PF is in VFs releasing state reset VF is impossible,
232 * so leave it.
233 */
234 if (test_bit(__I40E_VFS_RELEASING, pf->state))
235 return;
236 if (i40e_reset_vf(vf, false))
237 return;
238 usleep_range(10000, 20000);
239 }
240
241 if (notify_vf)
242 dev_warn(&vf->pf->pdev->dev,
243 "Failed to initiate reset for VF %d after 200 milliseconds\n",
244 vf->vf_id);
245 else
246 dev_dbg(&vf->pf->pdev->dev,
247 "Failed to initiate reset for VF %d after 200 milliseconds\n",
248 vf->vf_id);
249 }
250
251 /**
252 * i40e_vc_isvalid_vsi_id
253 * @vf: pointer to the VF info
254 * @vsi_id: VF relative VSI id
255 *
256 * check for the valid VSI id
257 **/
i40e_vc_isvalid_vsi_id(struct i40e_vf * vf,u16 vsi_id)258 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
259 {
260 struct i40e_pf *pf = vf->pf;
261 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
262
263 return (vsi && (vsi->vf_id == vf->vf_id));
264 }
265
266 /**
267 * i40e_vc_isvalid_queue_id
268 * @vf: pointer to the VF info
269 * @vsi_id: vsi id
270 * @qid: vsi relative queue id
271 *
272 * check for the valid queue id
273 **/
i40e_vc_isvalid_queue_id(struct i40e_vf * vf,u16 vsi_id,u16 qid)274 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
275 u16 qid)
276 {
277 struct i40e_pf *pf = vf->pf;
278 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
279
280 return (vsi && (qid < vsi->alloc_queue_pairs));
281 }
282
283 /**
284 * i40e_vc_isvalid_vector_id
285 * @vf: pointer to the VF info
286 * @vector_id: VF relative vector id
287 *
288 * check for the valid vector id
289 **/
i40e_vc_isvalid_vector_id(struct i40e_vf * vf,u32 vector_id)290 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
291 {
292 struct i40e_pf *pf = vf->pf;
293
294 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
295 }
296
297 /***********************vf resource mgmt routines*****************/
298
299 /**
300 * i40e_vc_get_pf_queue_id
301 * @vf: pointer to the VF info
302 * @vsi_id: id of VSI as provided by the FW
303 * @vsi_queue_id: vsi relative queue id
304 *
305 * return PF relative queue id
306 **/
i40e_vc_get_pf_queue_id(struct i40e_vf * vf,u16 vsi_id,u8 vsi_queue_id)307 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
308 u8 vsi_queue_id)
309 {
310 struct i40e_pf *pf = vf->pf;
311 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
312 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
313
314 if (!vsi)
315 return pf_queue_id;
316
317 if (le16_to_cpu(vsi->info.mapping_flags) &
318 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
319 pf_queue_id =
320 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
321 else
322 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
323 vsi_queue_id;
324
325 return pf_queue_id;
326 }
327
328 /**
329 * i40e_get_real_pf_qid
330 * @vf: pointer to the VF info
331 * @vsi_id: vsi id
332 * @queue_id: queue number
333 *
334 * wrapper function to get pf_queue_id handling ADq code as well
335 **/
i40e_get_real_pf_qid(struct i40e_vf * vf,u16 vsi_id,u16 queue_id)336 static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
337 {
338 int i;
339
340 if (vf->adq_enabled) {
341 /* Although VF considers all the queues(can be 1 to 16) as its
342 * own but they may actually belong to different VSIs(up to 4).
343 * We need to find which queues belongs to which VSI.
344 */
345 for (i = 0; i < vf->num_tc; i++) {
346 if (queue_id < vf->ch[i].num_qps) {
347 vsi_id = vf->ch[i].vsi_id;
348 break;
349 }
350 /* find right queue id which is relative to a
351 * given VSI.
352 */
353 queue_id -= vf->ch[i].num_qps;
354 }
355 }
356
357 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
358 }
359
360 /**
361 * i40e_config_irq_link_list
362 * @vf: pointer to the VF info
363 * @vsi_id: id of VSI as given by the FW
364 * @vecmap: irq map info
365 *
366 * configure irq link list from the map
367 **/
i40e_config_irq_link_list(struct i40e_vf * vf,u16 vsi_id,struct virtchnl_vector_map * vecmap)368 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
369 struct virtchnl_vector_map *vecmap)
370 {
371 unsigned long linklistmap = 0, tempmap;
372 struct i40e_pf *pf = vf->pf;
373 struct i40e_hw *hw = &pf->hw;
374 u16 vsi_queue_id, pf_queue_id;
375 enum i40e_queue_type qtype;
376 u16 next_q, vector_id, size;
377 u32 reg, reg_idx;
378 u16 itr_idx = 0;
379
380 vector_id = vecmap->vector_id;
381 /* setup the head */
382 if (0 == vector_id)
383 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
384 else
385 reg_idx = I40E_VPINT_LNKLSTN(
386 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
387 (vector_id - 1));
388
389 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
390 /* Special case - No queues mapped on this vector */
391 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
392 goto irq_list_done;
393 }
394 tempmap = vecmap->rxq_map;
395 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
396 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
397 vsi_queue_id));
398 }
399
400 tempmap = vecmap->txq_map;
401 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
402 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
403 vsi_queue_id + 1));
404 }
405
406 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
407 next_q = find_first_bit(&linklistmap, size);
408 if (unlikely(next_q == size))
409 goto irq_list_done;
410
411 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
412 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
413 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
414 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
415
416 wr32(hw, reg_idx, reg);
417
418 while (next_q < size) {
419 switch (qtype) {
420 case I40E_QUEUE_TYPE_RX:
421 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
422 itr_idx = vecmap->rxitr_idx;
423 break;
424 case I40E_QUEUE_TYPE_TX:
425 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
426 itr_idx = vecmap->txitr_idx;
427 break;
428 default:
429 break;
430 }
431
432 next_q = find_next_bit(&linklistmap, size, next_q + 1);
433 if (next_q < size) {
434 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
435 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
436 pf_queue_id = i40e_get_real_pf_qid(vf,
437 vsi_id,
438 vsi_queue_id);
439 } else {
440 pf_queue_id = I40E_QUEUE_END_OF_LIST;
441 qtype = 0;
442 }
443
444 /* format for the RQCTL & TQCTL regs is same */
445 reg = (vector_id) |
446 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
447 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
448 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
449 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
450 wr32(hw, reg_idx, reg);
451 }
452
453 /* if the vf is running in polling mode and using interrupt zero,
454 * need to disable auto-mask on enabling zero interrupt for VFs.
455 */
456 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
457 (vector_id == 0)) {
458 reg = rd32(hw, I40E_GLINT_CTL);
459 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
460 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
461 wr32(hw, I40E_GLINT_CTL, reg);
462 }
463 }
464
465 irq_list_done:
466 i40e_flush(hw);
467 }
468
469 /**
470 * i40e_release_iwarp_qvlist
471 * @vf: pointer to the VF.
472 *
473 **/
i40e_release_iwarp_qvlist(struct i40e_vf * vf)474 static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
475 {
476 struct i40e_pf *pf = vf->pf;
477 struct virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
478 u32 msix_vf;
479 u32 i;
480
481 if (!vf->qvlist_info)
482 return;
483
484 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
485 for (i = 0; i < qvlist_info->num_vectors; i++) {
486 struct virtchnl_iwarp_qv_info *qv_info;
487 u32 next_q_index, next_q_type;
488 struct i40e_hw *hw = &pf->hw;
489 u32 v_idx, reg_idx, reg;
490
491 qv_info = &qvlist_info->qv_info[i];
492 if (!qv_info)
493 continue;
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 = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
502 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
503 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
504 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
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_iwarp_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 **/
i40e_config_iwarp_qvlist(struct i40e_vf * vf,struct virtchnl_iwarp_qvlist_info * qvlist_info)526 static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
527 struct virtchnl_iwarp_qvlist_info *qvlist_info)
528 {
529 struct i40e_pf *pf = vf->pf;
530 struct i40e_hw *hw = &pf->hw;
531 struct virtchnl_iwarp_qv_info *qv_info;
532 u32 v_idx, i, reg_idx, reg;
533 u32 next_q_idx, next_q_type;
534 u32 msix_vf;
535 int ret = 0;
536
537 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
538
539 if (qvlist_info->num_vectors > msix_vf) {
540 dev_warn(&pf->pdev->dev,
541 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
542 qvlist_info->num_vectors,
543 msix_vf);
544 ret = -EINVAL;
545 goto err_out;
546 }
547
548 kfree(vf->qvlist_info);
549 vf->qvlist_info = kzalloc(struct_size(vf->qvlist_info, qv_info,
550 qvlist_info->num_vectors - 1),
551 GFP_KERNEL);
552 if (!vf->qvlist_info) {
553 ret = -ENOMEM;
554 goto err_out;
555 }
556 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
557
558 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
559 for (i = 0; i < qvlist_info->num_vectors; i++) {
560 qv_info = &qvlist_info->qv_info[i];
561 if (!qv_info)
562 continue;
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 = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
581 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
582 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
583 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
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 |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
685 & I40E_QTX_CTL_PF_INDX_MASK);
686 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
687 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
688 & I40E_QTX_CTL_VFVM_INDX_MASK);
689 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
690 i40e_flush(hw);
691
692 error_context:
693 return ret;
694 }
695
696 /**
697 * i40e_config_vsi_rx_queue
698 * @vf: pointer to the VF info
699 * @vsi_id: id of VSI as provided by the FW
700 * @vsi_queue_id: vsi relative queue index
701 * @info: config. info
702 *
703 * configure rx queue
704 **/
i40e_config_vsi_rx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_rxq_info * info)705 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
706 u16 vsi_queue_id,
707 struct virtchnl_rxq_info *info)
708 {
709 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
710 struct i40e_pf *pf = vf->pf;
711 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
712 struct i40e_hw *hw = &pf->hw;
713 struct i40e_hmc_obj_rxq rx_ctx;
714 int ret = 0;
715
716 /* clear the context structure first */
717 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
718
719 /* only set the required fields */
720 rx_ctx.base = info->dma_ring_addr / 128;
721 rx_ctx.qlen = info->ring_len;
722
723 if (info->splithdr_enabled) {
724 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
725 I40E_RX_SPLIT_IP |
726 I40E_RX_SPLIT_TCP_UDP |
727 I40E_RX_SPLIT_SCTP;
728 /* header length validation */
729 if (info->hdr_size > ((2 * 1024) - 64)) {
730 ret = -EINVAL;
731 goto error_param;
732 }
733 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
734
735 /* set split mode 10b */
736 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
737 }
738
739 /* databuffer length validation */
740 if (info->databuffer_size > ((16 * 1024) - 128)) {
741 ret = -EINVAL;
742 goto error_param;
743 }
744 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
745
746 /* max pkt. length validation */
747 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
748 ret = -EINVAL;
749 goto error_param;
750 }
751 rx_ctx.rxmax = info->max_pkt_size;
752
753 /* if port VLAN is configured increase the max packet size */
754 if (vsi->info.pvid)
755 rx_ctx.rxmax += VLAN_HLEN;
756
757 /* enable 32bytes desc always */
758 rx_ctx.dsize = 1;
759
760 /* default values */
761 rx_ctx.lrxqthresh = 1;
762 rx_ctx.crcstrip = 1;
763 rx_ctx.prefena = 1;
764 rx_ctx.l2tsel = 1;
765
766 /* clear the context in the HMC */
767 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
768 if (ret) {
769 dev_err(&pf->pdev->dev,
770 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
771 pf_queue_id, ret);
772 ret = -ENOENT;
773 goto error_param;
774 }
775
776 /* set the context in the HMC */
777 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
778 if (ret) {
779 dev_err(&pf->pdev->dev,
780 "Failed to set VF LAN Rx queue context %d error: %d\n",
781 pf_queue_id, ret);
782 ret = -ENOENT;
783 goto error_param;
784 }
785
786 error_param:
787 return ret;
788 }
789
790 /**
791 * i40e_alloc_vsi_res
792 * @vf: pointer to the VF info
793 * @idx: VSI index, applies only for ADq mode, zero otherwise
794 *
795 * alloc VF vsi context & resources
796 **/
i40e_alloc_vsi_res(struct i40e_vf * vf,u8 idx)797 static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
798 {
799 struct i40e_mac_filter *f = NULL;
800 struct i40e_pf *pf = vf->pf;
801 struct i40e_vsi *vsi;
802 u64 max_tx_rate = 0;
803 int ret = 0;
804
805 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid,
806 vf->vf_id);
807
808 if (!vsi) {
809 dev_err(&pf->pdev->dev,
810 "add vsi failed for VF %d, aq_err %d\n",
811 vf->vf_id, pf->hw.aq.asq_last_status);
812 ret = -ENOENT;
813 goto error_alloc_vsi_res;
814 }
815
816 if (!idx) {
817 u64 hena = i40e_pf_get_default_rss_hena(pf);
818 u8 broadcast[ETH_ALEN];
819
820 vf->lan_vsi_idx = vsi->idx;
821 vf->lan_vsi_id = vsi->id;
822 /* If the port VLAN has been configured and then the
823 * VF driver was removed then the VSI port VLAN
824 * configuration was destroyed. Check if there is
825 * a port VLAN and restore the VSI configuration if
826 * needed.
827 */
828 if (vf->port_vlan_id)
829 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
830
831 spin_lock_bh(&vsi->mac_filter_hash_lock);
832 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
833 f = i40e_add_mac_filter(vsi,
834 vf->default_lan_addr.addr);
835 if (!f)
836 dev_info(&pf->pdev->dev,
837 "Could not add MAC filter %pM for VF %d\n",
838 vf->default_lan_addr.addr, vf->vf_id);
839 }
840 eth_broadcast_addr(broadcast);
841 f = i40e_add_mac_filter(vsi, broadcast);
842 if (!f)
843 dev_info(&pf->pdev->dev,
844 "Could not allocate VF broadcast filter\n");
845 spin_unlock_bh(&vsi->mac_filter_hash_lock);
846 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
847 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
848 /* program mac filter only for VF VSI */
849 ret = i40e_sync_vsi_filters(vsi);
850 if (ret)
851 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
852 }
853
854 /* storing VSI index and id for ADq and don't apply the mac filter */
855 if (vf->adq_enabled) {
856 vf->ch[idx].vsi_idx = vsi->idx;
857 vf->ch[idx].vsi_id = vsi->id;
858 }
859
860 /* Set VF bandwidth if specified */
861 if (vf->tx_rate) {
862 max_tx_rate = vf->tx_rate;
863 } else if (vf->ch[idx].max_tx_rate) {
864 max_tx_rate = vf->ch[idx].max_tx_rate;
865 }
866
867 if (max_tx_rate) {
868 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
869 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
870 max_tx_rate, 0, NULL);
871 if (ret)
872 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
873 vf->vf_id, ret);
874 }
875
876 error_alloc_vsi_res:
877 return ret;
878 }
879
880 /**
881 * i40e_map_pf_queues_to_vsi
882 * @vf: pointer to the VF info
883 *
884 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
885 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
886 **/
i40e_map_pf_queues_to_vsi(struct i40e_vf * vf)887 static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
888 {
889 struct i40e_pf *pf = vf->pf;
890 struct i40e_hw *hw = &pf->hw;
891 u32 reg, num_tc = 1; /* VF has at least one traffic class */
892 u16 vsi_id, qps;
893 int i, j;
894
895 if (vf->adq_enabled)
896 num_tc = vf->num_tc;
897
898 for (i = 0; i < num_tc; i++) {
899 if (vf->adq_enabled) {
900 qps = vf->ch[i].num_qps;
901 vsi_id = vf->ch[i].vsi_id;
902 } else {
903 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
904 vsi_id = vf->lan_vsi_id;
905 }
906
907 for (j = 0; j < 7; j++) {
908 if (j * 2 >= qps) {
909 /* end of list */
910 reg = 0x07FF07FF;
911 } else {
912 u16 qid = i40e_vc_get_pf_queue_id(vf,
913 vsi_id,
914 j * 2);
915 reg = qid;
916 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
917 (j * 2) + 1);
918 reg |= qid << 16;
919 }
920 i40e_write_rx_ctl(hw,
921 I40E_VSILAN_QTABLE(j, vsi_id),
922 reg);
923 }
924 }
925 }
926
927 /**
928 * i40e_map_pf_to_vf_queues
929 * @vf: pointer to the VF info
930 *
931 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
932 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
933 **/
i40e_map_pf_to_vf_queues(struct i40e_vf * vf)934 static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
935 {
936 struct i40e_pf *pf = vf->pf;
937 struct i40e_hw *hw = &pf->hw;
938 u32 reg, total_qps = 0;
939 u32 qps, num_tc = 1; /* VF has at least one traffic class */
940 u16 vsi_id, qid;
941 int i, j;
942
943 if (vf->adq_enabled)
944 num_tc = vf->num_tc;
945
946 for (i = 0; i < num_tc; i++) {
947 if (vf->adq_enabled) {
948 qps = vf->ch[i].num_qps;
949 vsi_id = vf->ch[i].vsi_id;
950 } else {
951 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
952 vsi_id = vf->lan_vsi_id;
953 }
954
955 for (j = 0; j < qps; j++) {
956 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
957
958 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
959 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
960 reg);
961 total_qps++;
962 }
963 }
964 }
965
966 /**
967 * i40e_enable_vf_mappings
968 * @vf: pointer to the VF info
969 *
970 * enable VF mappings
971 **/
i40e_enable_vf_mappings(struct i40e_vf * vf)972 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
973 {
974 struct i40e_pf *pf = vf->pf;
975 struct i40e_hw *hw = &pf->hw;
976 u32 reg;
977
978 /* Tell the hardware we're using noncontiguous mapping. HW requires
979 * that VF queues be mapped using this method, even when they are
980 * contiguous in real life
981 */
982 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
983 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
984
985 /* enable VF vplan_qtable mappings */
986 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
987 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
988
989 i40e_map_pf_to_vf_queues(vf);
990 i40e_map_pf_queues_to_vsi(vf);
991
992 i40e_flush(hw);
993 }
994
995 /**
996 * i40e_disable_vf_mappings
997 * @vf: pointer to the VF info
998 *
999 * disable VF mappings
1000 **/
i40e_disable_vf_mappings(struct i40e_vf * vf)1001 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
1002 {
1003 struct i40e_pf *pf = vf->pf;
1004 struct i40e_hw *hw = &pf->hw;
1005 int i;
1006
1007 /* disable qp mappings */
1008 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
1009 for (i = 0; i < I40E_MAX_VSI_QP; i++)
1010 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
1011 I40E_QUEUE_END_OF_LIST);
1012 i40e_flush(hw);
1013 }
1014
1015 /**
1016 * i40e_free_vf_res
1017 * @vf: pointer to the VF info
1018 *
1019 * free VF resources
1020 **/
i40e_free_vf_res(struct i40e_vf * vf)1021 static void i40e_free_vf_res(struct i40e_vf *vf)
1022 {
1023 struct i40e_pf *pf = vf->pf;
1024 struct i40e_hw *hw = &pf->hw;
1025 u32 reg_idx, reg;
1026 int i, j, msix_vf;
1027
1028 /* Start by disabling VF's configuration API to prevent the OS from
1029 * accessing the VF's VSI after it's freed / invalidated.
1030 */
1031 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1032
1033 /* It's possible the VF had requeuested more queues than the default so
1034 * do the accounting here when we're about to free them.
1035 */
1036 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
1037 pf->queues_left += vf->num_queue_pairs -
1038 I40E_DEFAULT_QUEUES_PER_VF;
1039 }
1040
1041 /* free vsi & disconnect it from the parent uplink */
1042 if (vf->lan_vsi_idx) {
1043 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
1044 vf->lan_vsi_idx = 0;
1045 vf->lan_vsi_id = 0;
1046 }
1047
1048 /* do the accounting and remove additional ADq VSI's */
1049 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
1050 for (j = 0; j < vf->num_tc; j++) {
1051 /* At this point VSI0 is already released so don't
1052 * release it again and only clear their values in
1053 * structure variables
1054 */
1055 if (j)
1056 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
1057 vf->ch[j].vsi_idx = 0;
1058 vf->ch[j].vsi_id = 0;
1059 }
1060 }
1061 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
1062
1063 /* disable interrupts so the VF starts in a known state */
1064 for (i = 0; i < msix_vf; i++) {
1065 /* format is same for both registers */
1066 if (0 == i)
1067 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
1068 else
1069 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
1070 (vf->vf_id))
1071 + (i - 1));
1072 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
1073 i40e_flush(hw);
1074 }
1075
1076 /* clear the irq settings */
1077 for (i = 0; i < msix_vf; i++) {
1078 /* format is same for both registers */
1079 if (0 == i)
1080 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
1081 else
1082 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
1083 (vf->vf_id))
1084 + (i - 1));
1085 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1086 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1087 wr32(hw, reg_idx, reg);
1088 i40e_flush(hw);
1089 }
1090 /* reset some of the state variables keeping track of the resources */
1091 vf->num_queue_pairs = 0;
1092 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1093 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1094 }
1095
1096 /**
1097 * i40e_alloc_vf_res
1098 * @vf: pointer to the VF info
1099 *
1100 * allocate VF resources
1101 **/
i40e_alloc_vf_res(struct i40e_vf * vf)1102 static int i40e_alloc_vf_res(struct i40e_vf *vf)
1103 {
1104 struct i40e_pf *pf = vf->pf;
1105 int total_queue_pairs = 0;
1106 int ret, idx;
1107
1108 if (vf->num_req_queues &&
1109 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1110 pf->num_vf_qps = vf->num_req_queues;
1111 else
1112 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1113
1114 /* allocate hw vsi context & associated resources */
1115 ret = i40e_alloc_vsi_res(vf, 0);
1116 if (ret)
1117 goto error_alloc;
1118 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1119
1120 /* allocate additional VSIs based on tc information for ADq */
1121 if (vf->adq_enabled) {
1122 if (pf->queues_left >=
1123 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1124 /* TC 0 always belongs to VF VSI */
1125 for (idx = 1; idx < vf->num_tc; idx++) {
1126 ret = i40e_alloc_vsi_res(vf, idx);
1127 if (ret)
1128 goto error_alloc;
1129 }
1130 /* send correct number of queues */
1131 total_queue_pairs = I40E_MAX_VF_QUEUES;
1132 } else {
1133 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1134 vf->vf_id);
1135 vf->adq_enabled = false;
1136 }
1137 }
1138
1139 /* We account for each VF to get a default number of queue pairs. If
1140 * the VF has now requested more, we need to account for that to make
1141 * certain we never request more queues than we actually have left in
1142 * HW.
1143 */
1144 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1145 pf->queues_left -=
1146 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1147
1148 if (vf->trusted)
1149 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1150 else
1151 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1152
1153 /* store the total qps number for the runtime
1154 * VF req validation
1155 */
1156 vf->num_queue_pairs = total_queue_pairs;
1157
1158 /* VF is now completely initialized */
1159 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1160
1161 error_alloc:
1162 if (ret)
1163 i40e_free_vf_res(vf);
1164
1165 return ret;
1166 }
1167
1168 #define VF_DEVICE_STATUS 0xAA
1169 #define VF_TRANS_PENDING_MASK 0x20
1170 /**
1171 * i40e_quiesce_vf_pci
1172 * @vf: pointer to the VF structure
1173 *
1174 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1175 * if the transactions never clear.
1176 **/
i40e_quiesce_vf_pci(struct i40e_vf * vf)1177 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1178 {
1179 struct i40e_pf *pf = vf->pf;
1180 struct i40e_hw *hw = &pf->hw;
1181 int vf_abs_id, i;
1182 u32 reg;
1183
1184 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1185
1186 wr32(hw, I40E_PF_PCI_CIAA,
1187 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1188 for (i = 0; i < 100; i++) {
1189 reg = rd32(hw, I40E_PF_PCI_CIAD);
1190 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1191 return 0;
1192 udelay(1);
1193 }
1194 return -EIO;
1195 }
1196
1197 /**
1198 * __i40e_getnum_vf_vsi_vlan_filters
1199 * @vsi: pointer to the vsi
1200 *
1201 * called to get the number of VLANs offloaded on this VF
1202 **/
__i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1203 static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1204 {
1205 struct i40e_mac_filter *f;
1206 u16 num_vlans = 0, bkt;
1207
1208 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1209 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1210 num_vlans++;
1211 }
1212
1213 return num_vlans;
1214 }
1215
1216 /**
1217 * i40e_getnum_vf_vsi_vlan_filters
1218 * @vsi: pointer to the vsi
1219 *
1220 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
1221 **/
i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1222 static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1223 {
1224 int num_vlans;
1225
1226 spin_lock_bh(&vsi->mac_filter_hash_lock);
1227 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1228 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1229
1230 return num_vlans;
1231 }
1232
1233 /**
1234 * i40e_get_vlan_list_sync
1235 * @vsi: pointer to the VSI
1236 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller
1237 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
1238 * This array is allocated here, but has to be freed in caller.
1239 *
1240 * Called to get number of VLANs and VLAN list present in mac_filter_hash.
1241 **/
i40e_get_vlan_list_sync(struct i40e_vsi * vsi,u16 * num_vlans,s16 ** vlan_list)1242 static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
1243 s16 **vlan_list)
1244 {
1245 struct i40e_mac_filter *f;
1246 int i = 0;
1247 int bkt;
1248
1249 spin_lock_bh(&vsi->mac_filter_hash_lock);
1250 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1251 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC);
1252 if (!(*vlan_list))
1253 goto err;
1254
1255 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1256 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1257 continue;
1258 (*vlan_list)[i++] = f->vlan;
1259 }
1260 err:
1261 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1262 }
1263
1264 /**
1265 * i40e_set_vsi_promisc
1266 * @vf: pointer to the VF struct
1267 * @seid: VSI number
1268 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
1269 * for a given VLAN
1270 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
1271 * for a given VLAN
1272 * @vl: List of VLANs - apply filter for given VLANs
1273 * @num_vlans: Number of elements in @vl
1274 **/
1275 static int
i40e_set_vsi_promisc(struct i40e_vf * vf,u16 seid,bool multi_enable,bool unicast_enable,s16 * vl,u16 num_vlans)1276 i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
1277 bool unicast_enable, s16 *vl, u16 num_vlans)
1278 {
1279 struct i40e_pf *pf = vf->pf;
1280 struct i40e_hw *hw = &pf->hw;
1281 int aq_ret, aq_tmp = 0;
1282 int i;
1283
1284 /* No VLAN to set promisc on, set on VSI */
1285 if (!num_vlans || !vl) {
1286 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid,
1287 multi_enable,
1288 NULL);
1289 if (aq_ret) {
1290 int aq_err = pf->hw.aq.asq_last_status;
1291
1292 dev_err(&pf->pdev->dev,
1293 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1294 vf->vf_id,
1295 ERR_PTR(aq_ret),
1296 i40e_aq_str(&pf->hw, aq_err));
1297
1298 return aq_ret;
1299 }
1300
1301 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid,
1302 unicast_enable,
1303 NULL, true);
1304
1305 if (aq_ret) {
1306 int aq_err = pf->hw.aq.asq_last_status;
1307
1308 dev_err(&pf->pdev->dev,
1309 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1310 vf->vf_id,
1311 ERR_PTR(aq_ret),
1312 i40e_aq_str(&pf->hw, aq_err));
1313 }
1314
1315 return aq_ret;
1316 }
1317
1318 for (i = 0; i < num_vlans; i++) {
1319 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
1320 multi_enable,
1321 vl[i], NULL);
1322 if (aq_ret) {
1323 int aq_err = pf->hw.aq.asq_last_status;
1324
1325 dev_err(&pf->pdev->dev,
1326 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1327 vf->vf_id,
1328 ERR_PTR(aq_ret),
1329 i40e_aq_str(&pf->hw, aq_err));
1330
1331 if (!aq_tmp)
1332 aq_tmp = aq_ret;
1333 }
1334
1335 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
1336 unicast_enable,
1337 vl[i], NULL);
1338 if (aq_ret) {
1339 int aq_err = pf->hw.aq.asq_last_status;
1340
1341 dev_err(&pf->pdev->dev,
1342 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1343 vf->vf_id,
1344 ERR_PTR(aq_ret),
1345 i40e_aq_str(&pf->hw, aq_err));
1346
1347 if (!aq_tmp)
1348 aq_tmp = aq_ret;
1349 }
1350 }
1351
1352 if (aq_tmp)
1353 aq_ret = aq_tmp;
1354
1355 return aq_ret;
1356 }
1357
1358 /**
1359 * i40e_config_vf_promiscuous_mode
1360 * @vf: pointer to the VF info
1361 * @vsi_id: VSI id
1362 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1363 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1364 *
1365 * Called from the VF to configure the promiscuous mode of
1366 * VF vsis and from the VF reset path to reset promiscuous mode.
1367 **/
i40e_config_vf_promiscuous_mode(struct i40e_vf * vf,u16 vsi_id,bool allmulti,bool alluni)1368 static int i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1369 u16 vsi_id,
1370 bool allmulti,
1371 bool alluni)
1372 {
1373 struct i40e_pf *pf = vf->pf;
1374 int aq_ret = I40E_SUCCESS;
1375 struct i40e_vsi *vsi;
1376 u16 num_vlans;
1377 s16 *vl;
1378
1379 vsi = i40e_find_vsi_from_id(pf, vsi_id);
1380 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1381 return I40E_ERR_PARAM;
1382
1383 if (vf->port_vlan_id) {
1384 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti,
1385 alluni, &vf->port_vlan_id, 1);
1386 return aq_ret;
1387 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1388 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl);
1389
1390 if (!vl)
1391 return I40E_ERR_NO_MEMORY;
1392
1393 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1394 vl, num_vlans);
1395 kfree(vl);
1396 return aq_ret;
1397 }
1398
1399 /* no VLANs to set on, set on VSI */
1400 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1401 NULL, 0);
1402 return aq_ret;
1403 }
1404
1405 /**
1406 * i40e_sync_vfr_reset
1407 * @hw: pointer to hw struct
1408 * @vf_id: VF identifier
1409 *
1410 * Before trigger hardware reset, we need to know if no other process has
1411 * reserved the hardware for any reset operations. This check is done by
1412 * examining the status of the RSTAT1 register used to signal the reset.
1413 **/
i40e_sync_vfr_reset(struct i40e_hw * hw,int vf_id)1414 static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1415 {
1416 u32 reg;
1417 int i;
1418
1419 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1420 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1421 I40E_VFINT_ICR0_ADMINQ_MASK;
1422 if (reg)
1423 return 0;
1424
1425 usleep_range(100, 200);
1426 }
1427
1428 return -EAGAIN;
1429 }
1430
1431 /**
1432 * i40e_trigger_vf_reset
1433 * @vf: pointer to the VF structure
1434 * @flr: VFLR was issued or not
1435 *
1436 * Trigger hardware to start a reset for a particular VF. Expects the caller
1437 * to wait the proper amount of time to allow hardware to reset the VF before
1438 * it cleans up and restores VF functionality.
1439 **/
i40e_trigger_vf_reset(struct i40e_vf * vf,bool flr)1440 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1441 {
1442 struct i40e_pf *pf = vf->pf;
1443 struct i40e_hw *hw = &pf->hw;
1444 u32 reg, reg_idx, bit_idx;
1445 bool vf_active;
1446 u32 radq;
1447
1448 /* warn the VF */
1449 vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1450
1451 /* Disable VF's configuration API during reset. The flag is re-enabled
1452 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1453 * It's normally disabled in i40e_free_vf_res(), but it's safer
1454 * to do it earlier to give some time to finish to any VF config
1455 * functions that may still be running at this point.
1456 */
1457 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1458
1459 /* In the case of a VFLR, the HW has already reset the VF and we
1460 * just need to clean up, so don't hit the VFRTRIG register.
1461 */
1462 if (!flr) {
1463 /* Sync VFR reset before trigger next one */
1464 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1465 I40E_VFINT_ICR0_ADMINQ_MASK;
1466 if (vf_active && !radq)
1467 /* waiting for finish reset by virtual driver */
1468 if (i40e_sync_vfr_reset(hw, vf->vf_id))
1469 dev_info(&pf->pdev->dev,
1470 "Reset VF %d never finished\n",
1471 vf->vf_id);
1472
1473 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1474 * in progress state in rstat1 register.
1475 */
1476 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1477 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1478 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1479 i40e_flush(hw);
1480 }
1481 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1482 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1483 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1484 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1485 i40e_flush(hw);
1486
1487 if (i40e_quiesce_vf_pci(vf))
1488 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1489 vf->vf_id);
1490 }
1491
1492 /**
1493 * i40e_cleanup_reset_vf
1494 * @vf: pointer to the VF structure
1495 *
1496 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1497 * have verified whether the reset is finished properly, and ensure the
1498 * minimum amount of wait time has passed.
1499 **/
i40e_cleanup_reset_vf(struct i40e_vf * vf)1500 static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1501 {
1502 struct i40e_pf *pf = vf->pf;
1503 struct i40e_hw *hw = &pf->hw;
1504 u32 reg;
1505
1506 /* disable promisc modes in case they were enabled */
1507 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1508
1509 /* free VF resources to begin resetting the VSI state */
1510 i40e_free_vf_res(vf);
1511
1512 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1513 * By doing this we allow HW to access VF memory at any point. If we
1514 * did it any sooner, HW could access memory while it was being freed
1515 * in i40e_free_vf_res(), causing an IOMMU fault.
1516 *
1517 * On the other hand, this needs to be done ASAP, because the VF driver
1518 * is waiting for this to happen and may report a timeout. It's
1519 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1520 * it.
1521 */
1522 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1523 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1524 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1525
1526 /* reallocate VF resources to finish resetting the VSI state */
1527 if (!i40e_alloc_vf_res(vf)) {
1528 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1529 i40e_enable_vf_mappings(vf);
1530 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1531 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1532 /* Do not notify the client during VF init */
1533 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1534 &vf->vf_states))
1535 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1536 vf->num_vlan = 0;
1537 }
1538
1539 /* Tell the VF driver the reset is done. This needs to be done only
1540 * after VF has been fully initialized, because the VF driver may
1541 * request resources immediately after setting this flag.
1542 */
1543 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1544 }
1545
1546 /**
1547 * i40e_reset_vf
1548 * @vf: pointer to the VF structure
1549 * @flr: VFLR was issued or not
1550 *
1551 * Returns true if the VF is in reset, resets successfully, or resets
1552 * are disabled and false otherwise.
1553 **/
i40e_reset_vf(struct i40e_vf * vf,bool flr)1554 bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1555 {
1556 struct i40e_pf *pf = vf->pf;
1557 struct i40e_hw *hw = &pf->hw;
1558 bool rsd = false;
1559 u32 reg;
1560 int i;
1561
1562 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1563 return true;
1564
1565 /* Bail out if VFs are disabled. */
1566 if (test_bit(__I40E_VF_DISABLE, pf->state))
1567 return true;
1568
1569 /* If VF is being reset already we don't need to continue. */
1570 if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1571 return true;
1572
1573 i40e_trigger_vf_reset(vf, flr);
1574
1575 /* poll VPGEN_VFRSTAT reg to make sure
1576 * that reset is complete
1577 */
1578 for (i = 0; i < 10; i++) {
1579 /* VF reset requires driver to first reset the VF and then
1580 * poll the status register to make sure that the reset
1581 * completed successfully. Due to internal HW FIFO flushes,
1582 * we must wait 10ms before the register will be valid.
1583 */
1584 usleep_range(10000, 20000);
1585 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1586 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1587 rsd = true;
1588 break;
1589 }
1590 }
1591
1592 if (flr)
1593 usleep_range(10000, 20000);
1594
1595 if (!rsd)
1596 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1597 vf->vf_id);
1598 usleep_range(10000, 20000);
1599
1600 /* On initial reset, we don't have any queues to disable */
1601 if (vf->lan_vsi_idx != 0)
1602 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1603
1604 i40e_cleanup_reset_vf(vf);
1605
1606 i40e_flush(hw);
1607 usleep_range(20000, 40000);
1608 clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states);
1609
1610 return true;
1611 }
1612
1613 /**
1614 * i40e_reset_all_vfs
1615 * @pf: pointer to the PF structure
1616 * @flr: VFLR was issued or not
1617 *
1618 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1619 * VF, then do all the waiting in one chunk, and finally finish restoring each
1620 * VF after the wait. This is useful during PF routines which need to reset
1621 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1622 *
1623 * Returns true if any VFs were reset, and false otherwise.
1624 **/
i40e_reset_all_vfs(struct i40e_pf * pf,bool flr)1625 bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1626 {
1627 struct i40e_hw *hw = &pf->hw;
1628 struct i40e_vf *vf;
1629 int i, v;
1630 u32 reg;
1631
1632 /* If we don't have any VFs, then there is nothing to reset */
1633 if (!pf->num_alloc_vfs)
1634 return false;
1635
1636 /* If VFs have been disabled, there is no need to reset */
1637 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1638 return false;
1639
1640 /* Begin reset on all VFs at once */
1641 for (v = 0; v < pf->num_alloc_vfs; v++) {
1642 vf = &pf->vf[v];
1643 /* If VF is being reset no need to trigger reset again */
1644 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1645 i40e_trigger_vf_reset(&pf->vf[v], flr);
1646 }
1647
1648 /* HW requires some time to make sure it can flush the FIFO for a VF
1649 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1650 * sequence to make sure that it has completed. We'll keep track of
1651 * the VFs using a simple iterator that increments once that VF has
1652 * finished resetting.
1653 */
1654 for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
1655 usleep_range(10000, 20000);
1656
1657 /* Check each VF in sequence, beginning with the VF to fail
1658 * the previous check.
1659 */
1660 while (v < pf->num_alloc_vfs) {
1661 vf = &pf->vf[v];
1662 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
1663 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1664 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1665 break;
1666 }
1667
1668 /* If the current VF has finished resetting, move on
1669 * to the next VF in sequence.
1670 */
1671 v++;
1672 }
1673 }
1674
1675 if (flr)
1676 usleep_range(10000, 20000);
1677
1678 /* Display a warning if at least one VF didn't manage to reset in
1679 * time, but continue on with the operation.
1680 */
1681 if (v < pf->num_alloc_vfs)
1682 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1683 pf->vf[v].vf_id);
1684 usleep_range(10000, 20000);
1685
1686 /* Begin disabling all the rings associated with VFs, but do not wait
1687 * between each VF.
1688 */
1689 for (v = 0; v < pf->num_alloc_vfs; v++) {
1690 /* On initial reset, we don't have any queues to disable */
1691 if (pf->vf[v].lan_vsi_idx == 0)
1692 continue;
1693
1694 /* If VF is reset in another thread just continue */
1695 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1696 continue;
1697
1698 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[v].lan_vsi_idx]);
1699 }
1700
1701 /* Now that we've notified HW to disable all of the VF rings, wait
1702 * until they finish.
1703 */
1704 for (v = 0; v < pf->num_alloc_vfs; v++) {
1705 /* On initial reset, we don't have any queues to disable */
1706 if (pf->vf[v].lan_vsi_idx == 0)
1707 continue;
1708
1709 /* If VF is reset in another thread just continue */
1710 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1711 continue;
1712
1713 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[v].lan_vsi_idx]);
1714 }
1715
1716 /* Hw may need up to 50ms to finish disabling the RX queues. We
1717 * minimize the wait by delaying only once for all VFs.
1718 */
1719 mdelay(50);
1720
1721 /* Finish the reset on each VF */
1722 for (v = 0; v < pf->num_alloc_vfs; v++) {
1723 /* If VF is reset in another thread just continue */
1724 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1725 continue;
1726
1727 i40e_cleanup_reset_vf(&pf->vf[v]);
1728 }
1729
1730 i40e_flush(hw);
1731 usleep_range(20000, 40000);
1732 clear_bit(__I40E_VF_DISABLE, pf->state);
1733
1734 return true;
1735 }
1736
1737 /**
1738 * i40e_free_vfs
1739 * @pf: pointer to the PF structure
1740 *
1741 * free VF resources
1742 **/
i40e_free_vfs(struct i40e_pf * pf)1743 void i40e_free_vfs(struct i40e_pf *pf)
1744 {
1745 struct i40e_hw *hw = &pf->hw;
1746 u32 reg_idx, bit_idx;
1747 int i, tmp, vf_id;
1748
1749 if (!pf->vf)
1750 return;
1751
1752 set_bit(__I40E_VFS_RELEASING, pf->state);
1753 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1754 usleep_range(1000, 2000);
1755
1756 i40e_notify_client_of_vf_enable(pf, 0);
1757
1758 /* Disable IOV before freeing resources. This lets any VF drivers
1759 * running in the host get themselves cleaned up before we yank
1760 * the carpet out from underneath their feet.
1761 */
1762 if (!pci_vfs_assigned(pf->pdev))
1763 pci_disable_sriov(pf->pdev);
1764 else
1765 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1766
1767 /* Amortize wait time by stopping all VFs at the same time */
1768 for (i = 0; i < pf->num_alloc_vfs; i++) {
1769 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1770 continue;
1771
1772 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1773 }
1774
1775 for (i = 0; i < pf->num_alloc_vfs; i++) {
1776 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1777 continue;
1778
1779 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1780 }
1781
1782 /* free up VF resources */
1783 tmp = pf->num_alloc_vfs;
1784 pf->num_alloc_vfs = 0;
1785 for (i = 0; i < tmp; i++) {
1786 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1787 i40e_free_vf_res(&pf->vf[i]);
1788 /* disable qp mappings */
1789 i40e_disable_vf_mappings(&pf->vf[i]);
1790 }
1791
1792 kfree(pf->vf);
1793 pf->vf = NULL;
1794
1795 /* This check is for when the driver is unloaded while VFs are
1796 * assigned. Setting the number of VFs to 0 through sysfs is caught
1797 * before this function ever gets called.
1798 */
1799 if (!pci_vfs_assigned(pf->pdev)) {
1800 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1801 * work correctly when SR-IOV gets re-enabled.
1802 */
1803 for (vf_id = 0; vf_id < tmp; vf_id++) {
1804 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1805 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1806 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1807 }
1808 }
1809 clear_bit(__I40E_VF_DISABLE, pf->state);
1810 clear_bit(__I40E_VFS_RELEASING, pf->state);
1811 }
1812
1813 #ifdef CONFIG_PCI_IOV
1814 /**
1815 * i40e_alloc_vfs
1816 * @pf: pointer to the PF structure
1817 * @num_alloc_vfs: number of VFs to allocate
1818 *
1819 * allocate VF resources
1820 **/
i40e_alloc_vfs(struct i40e_pf * pf,u16 num_alloc_vfs)1821 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1822 {
1823 struct i40e_vf *vfs;
1824 int i, ret = 0;
1825
1826 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1827 i40e_irq_dynamic_disable_icr0(pf);
1828
1829 /* Check to see if we're just allocating resources for extant VFs */
1830 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1831 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1832 if (ret) {
1833 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1834 pf->num_alloc_vfs = 0;
1835 goto err_iov;
1836 }
1837 }
1838 /* allocate memory */
1839 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1840 if (!vfs) {
1841 ret = -ENOMEM;
1842 goto err_alloc;
1843 }
1844 pf->vf = vfs;
1845
1846 /* apply default profile */
1847 for (i = 0; i < num_alloc_vfs; i++) {
1848 vfs[i].pf = pf;
1849 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1850 vfs[i].vf_id = i;
1851
1852 /* assign default capabilities */
1853 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1854 vfs[i].spoofchk = true;
1855
1856 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1857
1858 }
1859 pf->num_alloc_vfs = num_alloc_vfs;
1860
1861 /* VF resources get allocated during reset */
1862 i40e_reset_all_vfs(pf, false);
1863
1864 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1865
1866 err_alloc:
1867 if (ret)
1868 i40e_free_vfs(pf);
1869 err_iov:
1870 /* Re-enable interrupt 0. */
1871 i40e_irq_dynamic_enable_icr0(pf);
1872 return ret;
1873 }
1874
1875 #endif
1876 /**
1877 * i40e_pci_sriov_enable
1878 * @pdev: pointer to a pci_dev structure
1879 * @num_vfs: number of VFs to allocate
1880 *
1881 * Enable or change the number of VFs
1882 **/
i40e_pci_sriov_enable(struct pci_dev * pdev,int num_vfs)1883 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1884 {
1885 #ifdef CONFIG_PCI_IOV
1886 struct i40e_pf *pf = pci_get_drvdata(pdev);
1887 int pre_existing_vfs = pci_num_vf(pdev);
1888 int err = 0;
1889
1890 if (test_bit(__I40E_TESTING, pf->state)) {
1891 dev_warn(&pdev->dev,
1892 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1893 err = -EPERM;
1894 goto err_out;
1895 }
1896
1897 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1898 i40e_free_vfs(pf);
1899 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1900 goto out;
1901
1902 if (num_vfs > pf->num_req_vfs) {
1903 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1904 num_vfs, pf->num_req_vfs);
1905 err = -EPERM;
1906 goto err_out;
1907 }
1908
1909 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1910 err = i40e_alloc_vfs(pf, num_vfs);
1911 if (err) {
1912 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1913 goto err_out;
1914 }
1915
1916 out:
1917 return num_vfs;
1918
1919 err_out:
1920 return err;
1921 #endif
1922 return 0;
1923 }
1924
1925 /**
1926 * i40e_pci_sriov_configure
1927 * @pdev: pointer to a pci_dev structure
1928 * @num_vfs: number of VFs to allocate
1929 *
1930 * Enable or change the number of VFs. Called when the user updates the number
1931 * of VFs in sysfs.
1932 **/
i40e_pci_sriov_configure(struct pci_dev * pdev,int num_vfs)1933 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1934 {
1935 struct i40e_pf *pf = pci_get_drvdata(pdev);
1936 int ret = 0;
1937
1938 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1939 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1940 return -EAGAIN;
1941 }
1942
1943 if (num_vfs) {
1944 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1945 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1946 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1947 }
1948 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1949 goto sriov_configure_out;
1950 }
1951
1952 if (!pci_vfs_assigned(pf->pdev)) {
1953 i40e_free_vfs(pf);
1954 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1955 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1956 } else {
1957 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1958 ret = -EINVAL;
1959 goto sriov_configure_out;
1960 }
1961 sriov_configure_out:
1962 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1963 return ret;
1964 }
1965
1966 /***********************virtual channel routines******************/
1967
1968 /**
1969 * i40e_vc_send_msg_to_vf
1970 * @vf: pointer to the VF info
1971 * @v_opcode: virtual channel opcode
1972 * @v_retval: virtual channel return value
1973 * @msg: pointer to the msg buffer
1974 * @msglen: msg length
1975 *
1976 * send msg to VF
1977 **/
i40e_vc_send_msg_to_vf(struct i40e_vf * vf,u32 v_opcode,u32 v_retval,u8 * msg,u16 msglen)1978 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1979 u32 v_retval, u8 *msg, u16 msglen)
1980 {
1981 struct i40e_pf *pf;
1982 struct i40e_hw *hw;
1983 int abs_vf_id;
1984 int aq_ret;
1985
1986 /* validate the request */
1987 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1988 return -EINVAL;
1989
1990 pf = vf->pf;
1991 hw = &pf->hw;
1992 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1993
1994 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1995 msg, msglen, NULL);
1996 if (aq_ret) {
1997 dev_info(&pf->pdev->dev,
1998 "Unable to send the message to VF %d aq_err %d\n",
1999 vf->vf_id, pf->hw.aq.asq_last_status);
2000 return -EIO;
2001 }
2002
2003 return 0;
2004 }
2005
2006 /**
2007 * i40e_vc_send_resp_to_vf
2008 * @vf: pointer to the VF info
2009 * @opcode: operation code
2010 * @retval: return value
2011 *
2012 * send resp msg to VF
2013 **/
i40e_vc_send_resp_to_vf(struct i40e_vf * vf,enum virtchnl_ops opcode,int retval)2014 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
2015 enum virtchnl_ops opcode,
2016 int retval)
2017 {
2018 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
2019 }
2020
2021 /**
2022 * i40e_sync_vf_state
2023 * @vf: pointer to the VF info
2024 * @state: VF state
2025 *
2026 * Called from a VF message to synchronize the service with a potential
2027 * VF reset state
2028 **/
i40e_sync_vf_state(struct i40e_vf * vf,enum i40e_vf_states state)2029 static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
2030 {
2031 int i;
2032
2033 /* When handling some messages, it needs VF state to be set.
2034 * It is possible that this flag is cleared during VF reset,
2035 * so there is a need to wait until the end of the reset to
2036 * handle the request message correctly.
2037 */
2038 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
2039 if (test_bit(state, &vf->vf_states))
2040 return true;
2041 usleep_range(10000, 20000);
2042 }
2043
2044 return test_bit(state, &vf->vf_states);
2045 }
2046
2047 /**
2048 * i40e_vc_get_version_msg
2049 * @vf: pointer to the VF info
2050 * @msg: pointer to the msg buffer
2051 *
2052 * called from the VF to request the API version used by the PF
2053 **/
i40e_vc_get_version_msg(struct i40e_vf * vf,u8 * msg)2054 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
2055 {
2056 struct virtchnl_version_info info = {
2057 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
2058 };
2059
2060 vf->vf_ver = *(struct virtchnl_version_info *)msg;
2061 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
2062 if (VF_IS_V10(&vf->vf_ver))
2063 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
2064 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
2065 I40E_SUCCESS, (u8 *)&info,
2066 sizeof(struct virtchnl_version_info));
2067 }
2068
2069 /**
2070 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
2071 * @vf: pointer to VF structure
2072 **/
i40e_del_qch(struct i40e_vf * vf)2073 static void i40e_del_qch(struct i40e_vf *vf)
2074 {
2075 struct i40e_pf *pf = vf->pf;
2076 int i;
2077
2078 /* first element in the array belongs to primary VF VSI and we shouldn't
2079 * delete it. We should however delete the rest of the VSIs created
2080 */
2081 for (i = 1; i < vf->num_tc; i++) {
2082 if (vf->ch[i].vsi_idx) {
2083 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
2084 vf->ch[i].vsi_idx = 0;
2085 vf->ch[i].vsi_id = 0;
2086 }
2087 }
2088 }
2089
2090 /**
2091 * i40e_vc_get_max_frame_size
2092 * @vf: pointer to the VF
2093 *
2094 * Max frame size is determined based on the current port's max frame size and
2095 * whether a port VLAN is configured on this VF. The VF is not aware whether
2096 * it's in a port VLAN so the PF needs to account for this in max frame size
2097 * checks and sending the max frame size to the VF.
2098 **/
i40e_vc_get_max_frame_size(struct i40e_vf * vf)2099 static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2100 {
2101 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2102
2103 if (vf->port_vlan_id)
2104 max_frame_size -= VLAN_HLEN;
2105
2106 return max_frame_size;
2107 }
2108
2109 /**
2110 * i40e_vc_get_vf_resources_msg
2111 * @vf: pointer to the VF info
2112 * @msg: pointer to the msg buffer
2113 *
2114 * called from the VF to request its resources
2115 **/
i40e_vc_get_vf_resources_msg(struct i40e_vf * vf,u8 * msg)2116 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2117 {
2118 struct virtchnl_vf_resource *vfres = NULL;
2119 struct i40e_pf *pf = vf->pf;
2120 struct i40e_vsi *vsi;
2121 int num_vsis = 1;
2122 int aq_ret = 0;
2123 size_t len = 0;
2124 int ret;
2125
2126 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
2127 aq_ret = I40E_ERR_PARAM;
2128 goto err;
2129 }
2130
2131 len = struct_size(vfres, vsi_res, num_vsis);
2132 vfres = kzalloc(len, GFP_KERNEL);
2133 if (!vfres) {
2134 aq_ret = I40E_ERR_NO_MEMORY;
2135 len = 0;
2136 goto err;
2137 }
2138 if (VF_IS_V11(&vf->vf_ver))
2139 vf->driver_caps = *(u32 *)msg;
2140 else
2141 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2142 VIRTCHNL_VF_OFFLOAD_RSS_REG |
2143 VIRTCHNL_VF_OFFLOAD_VLAN;
2144
2145 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2146 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
2147 vsi = pf->vsi[vf->lan_vsi_idx];
2148 if (!vsi->info.pvid)
2149 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2150
2151 if (i40e_vf_client_capable(pf, vf->vf_id) &&
2152 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_IWARP)) {
2153 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_IWARP;
2154 set_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
2155 } else {
2156 clear_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
2157 }
2158
2159 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2160 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2161 } else {
2162 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
2163 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2164 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2165 else
2166 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2167 }
2168
2169 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
2170 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2171 vfres->vf_cap_flags |=
2172 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2173 }
2174
2175 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2176 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2177
2178 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
2179 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2180 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2181
2182 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2183 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
2184 dev_err(&pf->pdev->dev,
2185 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2186 vf->vf_id);
2187 aq_ret = I40E_ERR_PARAM;
2188 goto err;
2189 }
2190 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2191 }
2192
2193 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
2194 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2195 vfres->vf_cap_flags |=
2196 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2197 }
2198
2199 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2200 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2201
2202 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2203 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2204
2205 vfres->num_vsis = num_vsis;
2206 vfres->num_queue_pairs = vf->num_queue_pairs;
2207 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2208 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2209 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2210 vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2211
2212 if (vf->lan_vsi_idx) {
2213 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2214 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2215 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2216 /* VFs only use TC 0 */
2217 vfres->vsi_res[0].qset_handle
2218 = le16_to_cpu(vsi->info.qs_handle[0]);
2219 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) {
2220 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
2221 eth_zero_addr(vf->default_lan_addr.addr);
2222 }
2223 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2224 vf->default_lan_addr.addr);
2225 }
2226 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2227
2228 err:
2229 /* send the response back to the VF */
2230 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2231 aq_ret, (u8 *)vfres, len);
2232
2233 kfree(vfres);
2234 return ret;
2235 }
2236
2237 /**
2238 * i40e_vc_config_promiscuous_mode_msg
2239 * @vf: pointer to the VF info
2240 * @msg: pointer to the msg buffer
2241 *
2242 * called from the VF to configure the promiscuous mode of
2243 * VF vsis
2244 **/
i40e_vc_config_promiscuous_mode_msg(struct i40e_vf * vf,u8 * msg)2245 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2246 {
2247 struct virtchnl_promisc_info *info =
2248 (struct virtchnl_promisc_info *)msg;
2249 struct i40e_pf *pf = vf->pf;
2250 bool allmulti = false;
2251 bool alluni = false;
2252 int aq_ret = 0;
2253
2254 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2255 aq_ret = I40E_ERR_PARAM;
2256 goto err_out;
2257 }
2258 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2259 dev_err(&pf->pdev->dev,
2260 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2261 vf->vf_id);
2262
2263 /* Lie to the VF on purpose, because this is an error we can
2264 * ignore. Unprivileged VF is not a virtual channel error.
2265 */
2266 aq_ret = 0;
2267 goto err_out;
2268 }
2269
2270 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2271 aq_ret = I40E_ERR_PARAM;
2272 goto err_out;
2273 }
2274
2275 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2276 aq_ret = I40E_ERR_PARAM;
2277 goto err_out;
2278 }
2279
2280 /* Multicast promiscuous handling*/
2281 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2282 allmulti = true;
2283
2284 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2285 alluni = true;
2286 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2287 alluni);
2288 if (aq_ret)
2289 goto err_out;
2290
2291 if (allmulti) {
2292 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2293 &vf->vf_states))
2294 dev_info(&pf->pdev->dev,
2295 "VF %d successfully set multicast promiscuous mode\n",
2296 vf->vf_id);
2297 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2298 &vf->vf_states))
2299 dev_info(&pf->pdev->dev,
2300 "VF %d successfully unset multicast promiscuous mode\n",
2301 vf->vf_id);
2302
2303 if (alluni) {
2304 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2305 &vf->vf_states))
2306 dev_info(&pf->pdev->dev,
2307 "VF %d successfully set unicast promiscuous mode\n",
2308 vf->vf_id);
2309 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2310 &vf->vf_states))
2311 dev_info(&pf->pdev->dev,
2312 "VF %d successfully unset unicast promiscuous mode\n",
2313 vf->vf_id);
2314
2315 err_out:
2316 /* send the response to the VF */
2317 return i40e_vc_send_resp_to_vf(vf,
2318 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2319 aq_ret);
2320 }
2321
2322 /**
2323 * i40e_vc_config_queues_msg
2324 * @vf: pointer to the VF info
2325 * @msg: pointer to the msg buffer
2326 *
2327 * called from the VF to configure the rx/tx
2328 * queues
2329 **/
i40e_vc_config_queues_msg(struct i40e_vf * vf,u8 * msg)2330 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2331 {
2332 struct virtchnl_vsi_queue_config_info *qci =
2333 (struct virtchnl_vsi_queue_config_info *)msg;
2334 struct virtchnl_queue_pair_info *qpi;
2335 u16 vsi_id, vsi_queue_id = 0;
2336 struct i40e_pf *pf = vf->pf;
2337 int i, j = 0, idx = 0;
2338 struct i40e_vsi *vsi;
2339 u16 num_qps_all = 0;
2340 int aq_ret = 0;
2341
2342 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2343 aq_ret = I40E_ERR_PARAM;
2344 goto error_param;
2345 }
2346
2347 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2348 aq_ret = I40E_ERR_PARAM;
2349 goto error_param;
2350 }
2351
2352 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2353 aq_ret = I40E_ERR_PARAM;
2354 goto error_param;
2355 }
2356
2357 if (vf->adq_enabled) {
2358 for (i = 0; i < vf->num_tc; i++)
2359 num_qps_all += vf->ch[i].num_qps;
2360 if (num_qps_all != qci->num_queue_pairs) {
2361 aq_ret = I40E_ERR_PARAM;
2362 goto error_param;
2363 }
2364 }
2365
2366 vsi_id = qci->vsi_id;
2367
2368 for (i = 0; i < qci->num_queue_pairs; i++) {
2369 qpi = &qci->qpair[i];
2370
2371 if (!vf->adq_enabled) {
2372 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2373 qpi->txq.queue_id)) {
2374 aq_ret = I40E_ERR_PARAM;
2375 goto error_param;
2376 }
2377
2378 vsi_queue_id = qpi->txq.queue_id;
2379
2380 if (qpi->txq.vsi_id != qci->vsi_id ||
2381 qpi->rxq.vsi_id != qci->vsi_id ||
2382 qpi->rxq.queue_id != vsi_queue_id) {
2383 aq_ret = I40E_ERR_PARAM;
2384 goto error_param;
2385 }
2386 }
2387
2388 if (vf->adq_enabled) {
2389 if (idx >= ARRAY_SIZE(vf->ch)) {
2390 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2391 goto error_param;
2392 }
2393 vsi_id = vf->ch[idx].vsi_id;
2394 }
2395
2396 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2397 &qpi->rxq) ||
2398 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2399 &qpi->txq)) {
2400 aq_ret = I40E_ERR_PARAM;
2401 goto error_param;
2402 }
2403
2404 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2405 * VF does not know about these additional VSIs and all
2406 * it cares is about its own queues. PF configures these queues
2407 * to its appropriate VSIs based on TC mapping
2408 */
2409 if (vf->adq_enabled) {
2410 if (idx >= ARRAY_SIZE(vf->ch)) {
2411 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2412 goto error_param;
2413 }
2414 if (j == (vf->ch[idx].num_qps - 1)) {
2415 idx++;
2416 j = 0; /* resetting the queue count */
2417 vsi_queue_id = 0;
2418 } else {
2419 j++;
2420 vsi_queue_id++;
2421 }
2422 }
2423 }
2424 /* set vsi num_queue_pairs in use to num configured by VF */
2425 if (!vf->adq_enabled) {
2426 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2427 qci->num_queue_pairs;
2428 } else {
2429 for (i = 0; i < vf->num_tc; i++) {
2430 vsi = pf->vsi[vf->ch[i].vsi_idx];
2431 vsi->num_queue_pairs = vf->ch[i].num_qps;
2432
2433 if (i40e_update_adq_vsi_queues(vsi, i)) {
2434 aq_ret = I40E_ERR_CONFIG;
2435 goto error_param;
2436 }
2437 }
2438 }
2439
2440 error_param:
2441 /* send the response to the VF */
2442 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2443 aq_ret);
2444 }
2445
2446 /**
2447 * i40e_validate_queue_map - check queue map is valid
2448 * @vf: the VF structure pointer
2449 * @vsi_id: vsi id
2450 * @queuemap: Tx or Rx queue map
2451 *
2452 * check if Tx or Rx queue map is valid
2453 **/
i40e_validate_queue_map(struct i40e_vf * vf,u16 vsi_id,unsigned long queuemap)2454 static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2455 unsigned long queuemap)
2456 {
2457 u16 vsi_queue_id, queue_id;
2458
2459 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2460 if (vf->adq_enabled) {
2461 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2462 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2463 } else {
2464 queue_id = vsi_queue_id;
2465 }
2466
2467 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2468 return -EINVAL;
2469 }
2470
2471 return 0;
2472 }
2473
2474 /**
2475 * i40e_vc_config_irq_map_msg
2476 * @vf: pointer to the VF info
2477 * @msg: pointer to the msg buffer
2478 *
2479 * called from the VF to configure the irq to
2480 * queue map
2481 **/
i40e_vc_config_irq_map_msg(struct i40e_vf * vf,u8 * msg)2482 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2483 {
2484 struct virtchnl_irq_map_info *irqmap_info =
2485 (struct virtchnl_irq_map_info *)msg;
2486 struct virtchnl_vector_map *map;
2487 int aq_ret = 0;
2488 u16 vsi_id;
2489 int i;
2490
2491 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2492 aq_ret = I40E_ERR_PARAM;
2493 goto error_param;
2494 }
2495
2496 if (irqmap_info->num_vectors >
2497 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2498 aq_ret = I40E_ERR_PARAM;
2499 goto error_param;
2500 }
2501
2502 for (i = 0; i < irqmap_info->num_vectors; i++) {
2503 map = &irqmap_info->vecmap[i];
2504 /* validate msg params */
2505 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2506 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2507 aq_ret = I40E_ERR_PARAM;
2508 goto error_param;
2509 }
2510 vsi_id = map->vsi_id;
2511
2512 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2513 aq_ret = I40E_ERR_PARAM;
2514 goto error_param;
2515 }
2516
2517 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2518 aq_ret = I40E_ERR_PARAM;
2519 goto error_param;
2520 }
2521
2522 i40e_config_irq_link_list(vf, vsi_id, map);
2523 }
2524 error_param:
2525 /* send the response to the VF */
2526 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2527 aq_ret);
2528 }
2529
2530 /**
2531 * i40e_ctrl_vf_tx_rings
2532 * @vsi: the SRIOV VSI being configured
2533 * @q_map: bit map of the queues to be enabled
2534 * @enable: start or stop the queue
2535 **/
i40e_ctrl_vf_tx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2536 static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2537 bool enable)
2538 {
2539 struct i40e_pf *pf = vsi->back;
2540 int ret = 0;
2541 u16 q_id;
2542
2543 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2544 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2545 vsi->base_queue + q_id,
2546 false /*is xdp*/, enable);
2547 if (ret)
2548 break;
2549 }
2550 return ret;
2551 }
2552
2553 /**
2554 * i40e_ctrl_vf_rx_rings
2555 * @vsi: the SRIOV VSI being configured
2556 * @q_map: bit map of the queues to be enabled
2557 * @enable: start or stop the queue
2558 **/
i40e_ctrl_vf_rx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2559 static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2560 bool enable)
2561 {
2562 struct i40e_pf *pf = vsi->back;
2563 int ret = 0;
2564 u16 q_id;
2565
2566 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2567 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2568 enable);
2569 if (ret)
2570 break;
2571 }
2572 return ret;
2573 }
2574
2575 /**
2576 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2577 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2578 *
2579 * Returns true if validation was successful, else false.
2580 */
i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select * vqs)2581 static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2582 {
2583 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2584 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2585 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2586 return false;
2587
2588 return true;
2589 }
2590
2591 /**
2592 * i40e_vc_enable_queues_msg
2593 * @vf: pointer to the VF info
2594 * @msg: pointer to the msg buffer
2595 *
2596 * called from the VF to enable all or specific queue(s)
2597 **/
i40e_vc_enable_queues_msg(struct i40e_vf * vf,u8 * msg)2598 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2599 {
2600 struct virtchnl_queue_select *vqs =
2601 (struct virtchnl_queue_select *)msg;
2602 struct i40e_pf *pf = vf->pf;
2603 int aq_ret = 0;
2604 int i;
2605
2606 if (vf->is_disabled_from_host) {
2607 aq_ret = -EPERM;
2608 dev_info(&pf->pdev->dev,
2609 "Admin has disabled VF %d, will not enable queues\n",
2610 vf->vf_id);
2611 goto error_param;
2612 }
2613
2614 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2615 aq_ret = I40E_ERR_PARAM;
2616 goto error_param;
2617 }
2618
2619 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2620 aq_ret = I40E_ERR_PARAM;
2621 goto error_param;
2622 }
2623
2624 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2625 aq_ret = I40E_ERR_PARAM;
2626 goto error_param;
2627 }
2628
2629 /* Use the queue bit map sent by the VF */
2630 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2631 true)) {
2632 aq_ret = I40E_ERR_TIMEOUT;
2633 goto error_param;
2634 }
2635 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2636 true)) {
2637 aq_ret = I40E_ERR_TIMEOUT;
2638 goto error_param;
2639 }
2640
2641 /* need to start the rings for additional ADq VSI's as well */
2642 if (vf->adq_enabled) {
2643 /* zero belongs to LAN VSI */
2644 for (i = 1; i < vf->num_tc; i++) {
2645 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2646 aq_ret = I40E_ERR_TIMEOUT;
2647 }
2648 }
2649
2650 error_param:
2651 /* send the response to the VF */
2652 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2653 aq_ret);
2654 }
2655
2656 /**
2657 * i40e_vc_disable_queues_msg
2658 * @vf: pointer to the VF info
2659 * @msg: pointer to the msg buffer
2660 *
2661 * called from the VF to disable all or specific
2662 * queue(s)
2663 **/
i40e_vc_disable_queues_msg(struct i40e_vf * vf,u8 * msg)2664 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2665 {
2666 struct virtchnl_queue_select *vqs =
2667 (struct virtchnl_queue_select *)msg;
2668 struct i40e_pf *pf = vf->pf;
2669 int aq_ret = 0;
2670
2671 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2672 aq_ret = I40E_ERR_PARAM;
2673 goto error_param;
2674 }
2675
2676 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2677 aq_ret = I40E_ERR_PARAM;
2678 goto error_param;
2679 }
2680
2681 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2682 aq_ret = I40E_ERR_PARAM;
2683 goto error_param;
2684 }
2685
2686 /* Use the queue bit map sent by the VF */
2687 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2688 false)) {
2689 aq_ret = I40E_ERR_TIMEOUT;
2690 goto error_param;
2691 }
2692 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2693 false)) {
2694 aq_ret = I40E_ERR_TIMEOUT;
2695 goto error_param;
2696 }
2697 error_param:
2698 /* send the response to the VF */
2699 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2700 aq_ret);
2701 }
2702
2703 /**
2704 * i40e_check_enough_queue - find big enough queue number
2705 * @vf: pointer to the VF info
2706 * @needed: the number of items needed
2707 *
2708 * Returns the base item index of the queue, or negative for error
2709 **/
i40e_check_enough_queue(struct i40e_vf * vf,u16 needed)2710 static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2711 {
2712 unsigned int i, cur_queues, more, pool_size;
2713 struct i40e_lump_tracking *pile;
2714 struct i40e_pf *pf = vf->pf;
2715 struct i40e_vsi *vsi;
2716
2717 vsi = pf->vsi[vf->lan_vsi_idx];
2718 cur_queues = vsi->alloc_queue_pairs;
2719
2720 /* if current allocated queues are enough for need */
2721 if (cur_queues >= needed)
2722 return vsi->base_queue;
2723
2724 pile = pf->qp_pile;
2725 if (cur_queues > 0) {
2726 /* if the allocated queues are not zero
2727 * just check if there are enough queues for more
2728 * behind the allocated queues.
2729 */
2730 more = needed - cur_queues;
2731 for (i = vsi->base_queue + cur_queues;
2732 i < pile->num_entries; i++) {
2733 if (pile->list[i] & I40E_PILE_VALID_BIT)
2734 break;
2735
2736 if (more-- == 1)
2737 /* there is enough */
2738 return vsi->base_queue;
2739 }
2740 }
2741
2742 pool_size = 0;
2743 for (i = 0; i < pile->num_entries; i++) {
2744 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2745 pool_size = 0;
2746 continue;
2747 }
2748 if (needed <= ++pool_size)
2749 /* there is enough */
2750 return i;
2751 }
2752
2753 return -ENOMEM;
2754 }
2755
2756 /**
2757 * i40e_vc_request_queues_msg
2758 * @vf: pointer to the VF info
2759 * @msg: pointer to the msg buffer
2760 *
2761 * VFs get a default number of queues but can use this message to request a
2762 * different number. If the request is successful, PF will reset the VF and
2763 * return 0. If unsuccessful, PF will send message informing VF of number of
2764 * available queues and return result of sending VF a message.
2765 **/
i40e_vc_request_queues_msg(struct i40e_vf * vf,u8 * msg)2766 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2767 {
2768 struct virtchnl_vf_res_request *vfres =
2769 (struct virtchnl_vf_res_request *)msg;
2770 u16 req_pairs = vfres->num_queue_pairs;
2771 u8 cur_pairs = vf->num_queue_pairs;
2772 struct i40e_pf *pf = vf->pf;
2773
2774 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2775 return -EINVAL;
2776
2777 if (req_pairs > I40E_MAX_VF_QUEUES) {
2778 dev_err(&pf->pdev->dev,
2779 "VF %d tried to request more than %d queues.\n",
2780 vf->vf_id,
2781 I40E_MAX_VF_QUEUES);
2782 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2783 } else if (req_pairs - cur_pairs > pf->queues_left) {
2784 dev_warn(&pf->pdev->dev,
2785 "VF %d requested %d more queues, but only %d left.\n",
2786 vf->vf_id,
2787 req_pairs - cur_pairs,
2788 pf->queues_left);
2789 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2790 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2791 dev_warn(&pf->pdev->dev,
2792 "VF %d requested %d more queues, but there is not enough for it.\n",
2793 vf->vf_id,
2794 req_pairs - cur_pairs);
2795 vfres->num_queue_pairs = cur_pairs;
2796 } else {
2797 /* successful request */
2798 vf->num_req_queues = req_pairs;
2799 i40e_vc_reset_vf(vf, true);
2800 return 0;
2801 }
2802
2803 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2804 (u8 *)vfres, sizeof(*vfres));
2805 }
2806
2807 /**
2808 * i40e_vc_get_stats_msg
2809 * @vf: pointer to the VF info
2810 * @msg: pointer to the msg buffer
2811 *
2812 * called from the VF to get vsi stats
2813 **/
i40e_vc_get_stats_msg(struct i40e_vf * vf,u8 * msg)2814 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2815 {
2816 struct virtchnl_queue_select *vqs =
2817 (struct virtchnl_queue_select *)msg;
2818 struct i40e_pf *pf = vf->pf;
2819 struct i40e_eth_stats stats;
2820 int aq_ret = 0;
2821 struct i40e_vsi *vsi;
2822
2823 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2824
2825 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2826 aq_ret = I40E_ERR_PARAM;
2827 goto error_param;
2828 }
2829
2830 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2831 aq_ret = I40E_ERR_PARAM;
2832 goto error_param;
2833 }
2834
2835 vsi = pf->vsi[vf->lan_vsi_idx];
2836 if (!vsi) {
2837 aq_ret = I40E_ERR_PARAM;
2838 goto error_param;
2839 }
2840 i40e_update_eth_stats(vsi);
2841 stats = vsi->eth_stats;
2842
2843 error_param:
2844 /* send the response back to the VF */
2845 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2846 (u8 *)&stats, sizeof(stats));
2847 }
2848
2849 /**
2850 * i40e_can_vf_change_mac
2851 * @vf: pointer to the VF info
2852 *
2853 * Return true if the VF is allowed to change its MAC filters, false otherwise
2854 */
i40e_can_vf_change_mac(struct i40e_vf * vf)2855 static bool i40e_can_vf_change_mac(struct i40e_vf *vf)
2856 {
2857 /* If the VF MAC address has been set administratively (via the
2858 * ndo_set_vf_mac command), then deny permission to the VF to
2859 * add/delete unicast MAC addresses, unless the VF is trusted
2860 */
2861 if (vf->pf_set_mac && !vf->trusted)
2862 return false;
2863
2864 return true;
2865 }
2866
2867 #define I40E_MAX_MACVLAN_PER_HW 3072
2868 #define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \
2869 (num_ports))
2870 /* If the VF is not trusted restrict the number of MAC/VLAN it can program
2871 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2872 */
2873 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2874 #define I40E_VC_MAX_VLAN_PER_VF 16
2875
2876 #define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \
2877 ({ typeof(vf_num) vf_num_ = (vf_num); \
2878 typeof(num_ports) num_ports_ = (num_ports); \
2879 ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \
2880 I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \
2881 I40E_VC_MAX_MAC_ADDR_PER_VF; })
2882 /**
2883 * i40e_check_vf_permission
2884 * @vf: pointer to the VF info
2885 * @al: MAC address list from virtchnl
2886 *
2887 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2888 * if any address in the list is not valid. Checks the following conditions:
2889 *
2890 * 1) broadcast and zero addresses are never valid
2891 * 2) unicast addresses are not allowed if the VMM has administratively set
2892 * the VF MAC address, unless the VF is marked as privileged.
2893 * 3) There is enough space to add all the addresses.
2894 *
2895 * Note that to guarantee consistency, it is expected this function be called
2896 * while holding the mac_filter_hash_lock, as otherwise the current number of
2897 * addresses might not be accurate.
2898 **/
i40e_check_vf_permission(struct i40e_vf * vf,struct virtchnl_ether_addr_list * al)2899 static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2900 struct virtchnl_ether_addr_list *al)
2901 {
2902 struct i40e_pf *pf = vf->pf;
2903 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2904 struct i40e_hw *hw = &pf->hw;
2905 int mac2add_cnt = 0;
2906 int i;
2907
2908 for (i = 0; i < al->num_elements; i++) {
2909 struct i40e_mac_filter *f;
2910 u8 *addr = al->list[i].addr;
2911
2912 if (is_broadcast_ether_addr(addr) ||
2913 is_zero_ether_addr(addr)) {
2914 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2915 addr);
2916 return I40E_ERR_INVALID_MAC_ADDR;
2917 }
2918
2919 /* If the host VMM administrator has set the VF MAC address
2920 * administratively via the ndo_set_vf_mac command then deny
2921 * permission to the VF to add or delete unicast MAC addresses.
2922 * Unless the VF is privileged and then it can do whatever.
2923 * The VF may request to set the MAC address filter already
2924 * assigned to it so do not return an error in that case.
2925 */
2926 if (!i40e_can_vf_change_mac(vf) &&
2927 !is_multicast_ether_addr(addr) &&
2928 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2929 dev_err(&pf->pdev->dev,
2930 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2931 return -EPERM;
2932 }
2933
2934 /*count filters that really will be added*/
2935 f = i40e_find_mac(vsi, addr);
2936 if (!f)
2937 ++mac2add_cnt;
2938 }
2939
2940 /* If this VF is not privileged, then we can't add more than a limited
2941 * number of addresses. Check to make sure that the additions do not
2942 * push us over the limit.
2943 */
2944 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2945 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2946 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2947 dev_err(&pf->pdev->dev,
2948 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2949 return -EPERM;
2950 }
2951 /* If this VF is trusted, it can use more resources than untrusted.
2952 * However to ensure that every trusted VF has appropriate number of
2953 * resources, divide whole pool of resources per port and then across
2954 * all VFs.
2955 */
2956 } else {
2957 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2958 I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
2959 hw->num_ports)) {
2960 dev_err(&pf->pdev->dev,
2961 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
2962 return -EPERM;
2963 }
2964 }
2965 return 0;
2966 }
2967
2968 /**
2969 * i40e_vc_add_mac_addr_msg
2970 * @vf: pointer to the VF info
2971 * @msg: pointer to the msg buffer
2972 *
2973 * add guest mac address filter
2974 **/
i40e_vc_add_mac_addr_msg(struct i40e_vf * vf,u8 * msg)2975 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2976 {
2977 struct virtchnl_ether_addr_list *al =
2978 (struct virtchnl_ether_addr_list *)msg;
2979 struct i40e_pf *pf = vf->pf;
2980 struct i40e_vsi *vsi = NULL;
2981 int ret = 0;
2982 int i;
2983
2984 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
2985 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2986 ret = I40E_ERR_PARAM;
2987 goto error_param;
2988 }
2989
2990 vsi = pf->vsi[vf->lan_vsi_idx];
2991
2992 /* Lock once, because all function inside for loop accesses VSI's
2993 * MAC filter list which needs to be protected using same lock.
2994 */
2995 spin_lock_bh(&vsi->mac_filter_hash_lock);
2996
2997 ret = i40e_check_vf_permission(vf, al);
2998 if (ret) {
2999 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3000 goto error_param;
3001 }
3002
3003 /* add new addresses to the list */
3004 for (i = 0; i < al->num_elements; i++) {
3005 struct i40e_mac_filter *f;
3006
3007 f = i40e_find_mac(vsi, al->list[i].addr);
3008 if (!f) {
3009 f = i40e_add_mac_filter(vsi, al->list[i].addr);
3010
3011 if (!f) {
3012 dev_err(&pf->pdev->dev,
3013 "Unable to add MAC filter %pM for VF %d\n",
3014 al->list[i].addr, vf->vf_id);
3015 ret = I40E_ERR_PARAM;
3016 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3017 goto error_param;
3018 }
3019 if (is_valid_ether_addr(al->list[i].addr) &&
3020 is_zero_ether_addr(vf->default_lan_addr.addr))
3021 ether_addr_copy(vf->default_lan_addr.addr,
3022 al->list[i].addr);
3023 }
3024 }
3025 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3026
3027 /* program the updated filter list */
3028 ret = i40e_sync_vsi_filters(vsi);
3029 if (ret)
3030 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3031 vf->vf_id, ret);
3032
3033 error_param:
3034 /* send the response to the VF */
3035 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
3036 ret, NULL, 0);
3037 }
3038
3039 /**
3040 * i40e_vc_del_mac_addr_msg
3041 * @vf: pointer to the VF info
3042 * @msg: pointer to the msg buffer
3043 *
3044 * remove guest mac address filter
3045 **/
i40e_vc_del_mac_addr_msg(struct i40e_vf * vf,u8 * msg)3046 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3047 {
3048 struct virtchnl_ether_addr_list *al =
3049 (struct virtchnl_ether_addr_list *)msg;
3050 bool was_unimac_deleted = false;
3051 struct i40e_pf *pf = vf->pf;
3052 struct i40e_vsi *vsi = NULL;
3053 int ret = 0;
3054 int i;
3055
3056 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3057 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3058 ret = I40E_ERR_PARAM;
3059 goto error_param;
3060 }
3061
3062 for (i = 0; i < al->num_elements; i++) {
3063 if (is_broadcast_ether_addr(al->list[i].addr) ||
3064 is_zero_ether_addr(al->list[i].addr)) {
3065 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
3066 al->list[i].addr, vf->vf_id);
3067 ret = I40E_ERR_INVALID_MAC_ADDR;
3068 goto error_param;
3069 }
3070 }
3071 vsi = pf->vsi[vf->lan_vsi_idx];
3072
3073 spin_lock_bh(&vsi->mac_filter_hash_lock);
3074 /* delete addresses from the list */
3075 for (i = 0; i < al->num_elements; i++) {
3076 const u8 *addr = al->list[i].addr;
3077
3078 /* Allow to delete VF primary MAC only if it was not set
3079 * administratively by PF or if VF is trusted.
3080 */
3081 if (ether_addr_equal(addr, vf->default_lan_addr.addr) &&
3082 i40e_can_vf_change_mac(vf))
3083 was_unimac_deleted = true;
3084 else
3085 continue;
3086
3087 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
3088 ret = I40E_ERR_INVALID_MAC_ADDR;
3089 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3090 goto error_param;
3091 }
3092 }
3093
3094 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3095
3096 /* program the updated filter list */
3097 ret = i40e_sync_vsi_filters(vsi);
3098 if (ret)
3099 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3100 vf->vf_id, ret);
3101
3102 if (vf->trusted && was_unimac_deleted) {
3103 struct i40e_mac_filter *f;
3104 struct hlist_node *h;
3105 u8 *macaddr = NULL;
3106 int bkt;
3107
3108 /* set last unicast mac address as default */
3109 spin_lock_bh(&vsi->mac_filter_hash_lock);
3110 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3111 if (is_valid_ether_addr(f->macaddr))
3112 macaddr = f->macaddr;
3113 }
3114 if (macaddr)
3115 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
3116 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3117 }
3118 error_param:
3119 /* send the response to the VF */
3120 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3121 }
3122
3123 /**
3124 * i40e_vc_add_vlan_msg
3125 * @vf: pointer to the VF info
3126 * @msg: pointer to the msg buffer
3127 *
3128 * program guest vlan id
3129 **/
i40e_vc_add_vlan_msg(struct i40e_vf * vf,u8 * msg)3130 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3131 {
3132 struct virtchnl_vlan_filter_list *vfl =
3133 (struct virtchnl_vlan_filter_list *)msg;
3134 struct i40e_pf *pf = vf->pf;
3135 struct i40e_vsi *vsi = NULL;
3136 int aq_ret = 0;
3137 int i;
3138
3139 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3140 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3141 dev_err(&pf->pdev->dev,
3142 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3143 goto error_param;
3144 }
3145 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3146 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3147 aq_ret = I40E_ERR_PARAM;
3148 goto error_param;
3149 }
3150
3151 for (i = 0; i < vfl->num_elements; i++) {
3152 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3153 aq_ret = I40E_ERR_PARAM;
3154 dev_err(&pf->pdev->dev,
3155 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3156 goto error_param;
3157 }
3158 }
3159 vsi = pf->vsi[vf->lan_vsi_idx];
3160 if (vsi->info.pvid) {
3161 aq_ret = I40E_ERR_PARAM;
3162 goto error_param;
3163 }
3164
3165 i40e_vlan_stripping_enable(vsi);
3166 for (i = 0; i < vfl->num_elements; i++) {
3167 /* add new VLAN filter */
3168 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3169 if (!ret)
3170 vf->num_vlan++;
3171
3172 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3173 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3174 true,
3175 vfl->vlan_id[i],
3176 NULL);
3177 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3178 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3179 true,
3180 vfl->vlan_id[i],
3181 NULL);
3182
3183 if (ret)
3184 dev_err(&pf->pdev->dev,
3185 "Unable to add VLAN filter %d for VF %d, error %d\n",
3186 vfl->vlan_id[i], vf->vf_id, ret);
3187 }
3188
3189 error_param:
3190 /* send the response to the VF */
3191 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3192 }
3193
3194 /**
3195 * i40e_vc_remove_vlan_msg
3196 * @vf: pointer to the VF info
3197 * @msg: pointer to the msg buffer
3198 *
3199 * remove programmed guest vlan id
3200 **/
i40e_vc_remove_vlan_msg(struct i40e_vf * vf,u8 * msg)3201 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3202 {
3203 struct virtchnl_vlan_filter_list *vfl =
3204 (struct virtchnl_vlan_filter_list *)msg;
3205 struct i40e_pf *pf = vf->pf;
3206 struct i40e_vsi *vsi = NULL;
3207 int aq_ret = 0;
3208 int i;
3209
3210 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3211 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3212 aq_ret = I40E_ERR_PARAM;
3213 goto error_param;
3214 }
3215
3216 for (i = 0; i < vfl->num_elements; i++) {
3217 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3218 aq_ret = I40E_ERR_PARAM;
3219 goto error_param;
3220 }
3221 }
3222
3223 vsi = pf->vsi[vf->lan_vsi_idx];
3224 if (vsi->info.pvid) {
3225 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3226 aq_ret = I40E_ERR_PARAM;
3227 goto error_param;
3228 }
3229
3230 for (i = 0; i < vfl->num_elements; i++) {
3231 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3232 vf->num_vlan--;
3233
3234 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3235 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3236 false,
3237 vfl->vlan_id[i],
3238 NULL);
3239 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3240 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3241 false,
3242 vfl->vlan_id[i],
3243 NULL);
3244 }
3245
3246 error_param:
3247 /* send the response to the VF */
3248 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3249 }
3250
3251 /**
3252 * i40e_vc_iwarp_msg
3253 * @vf: pointer to the VF info
3254 * @msg: pointer to the msg buffer
3255 * @msglen: msg length
3256 *
3257 * called from the VF for the iwarp msgs
3258 **/
i40e_vc_iwarp_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)3259 static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3260 {
3261 struct i40e_pf *pf = vf->pf;
3262 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3263 int aq_ret = 0;
3264
3265 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3266 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3267 aq_ret = I40E_ERR_PARAM;
3268 goto error_param;
3269 }
3270
3271 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
3272 msg, msglen);
3273
3274 error_param:
3275 /* send the response to the VF */
3276 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP,
3277 aq_ret);
3278 }
3279
3280 /**
3281 * i40e_vc_iwarp_qvmap_msg
3282 * @vf: pointer to the VF info
3283 * @msg: pointer to the msg buffer
3284 * @config: config qvmap or release it
3285 *
3286 * called from the VF for the iwarp msgs
3287 **/
i40e_vc_iwarp_qvmap_msg(struct i40e_vf * vf,u8 * msg,bool config)3288 static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3289 {
3290 struct virtchnl_iwarp_qvlist_info *qvlist_info =
3291 (struct virtchnl_iwarp_qvlist_info *)msg;
3292 int aq_ret = 0;
3293
3294 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3295 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3296 aq_ret = I40E_ERR_PARAM;
3297 goto error_param;
3298 }
3299
3300 if (config) {
3301 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
3302 aq_ret = I40E_ERR_PARAM;
3303 } else {
3304 i40e_release_iwarp_qvlist(vf);
3305 }
3306
3307 error_param:
3308 /* send the response to the VF */
3309 return i40e_vc_send_resp_to_vf(vf,
3310 config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP :
3311 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP,
3312 aq_ret);
3313 }
3314
3315 /**
3316 * i40e_vc_config_rss_key
3317 * @vf: pointer to the VF info
3318 * @msg: pointer to the msg buffer
3319 *
3320 * Configure the VF's RSS key
3321 **/
i40e_vc_config_rss_key(struct i40e_vf * vf,u8 * msg)3322 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3323 {
3324 struct virtchnl_rss_key *vrk =
3325 (struct virtchnl_rss_key *)msg;
3326 struct i40e_pf *pf = vf->pf;
3327 struct i40e_vsi *vsi = NULL;
3328 int aq_ret = 0;
3329
3330 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3331 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3332 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3333 aq_ret = I40E_ERR_PARAM;
3334 goto err;
3335 }
3336
3337 vsi = pf->vsi[vf->lan_vsi_idx];
3338 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3339 err:
3340 /* send the response to the VF */
3341 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3342 aq_ret);
3343 }
3344
3345 /**
3346 * i40e_vc_config_rss_lut
3347 * @vf: pointer to the VF info
3348 * @msg: pointer to the msg buffer
3349 *
3350 * Configure the VF's RSS LUT
3351 **/
i40e_vc_config_rss_lut(struct i40e_vf * vf,u8 * msg)3352 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3353 {
3354 struct virtchnl_rss_lut *vrl =
3355 (struct virtchnl_rss_lut *)msg;
3356 struct i40e_pf *pf = vf->pf;
3357 struct i40e_vsi *vsi = NULL;
3358 int aq_ret = 0;
3359 u16 i;
3360
3361 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3362 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3363 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3364 aq_ret = I40E_ERR_PARAM;
3365 goto err;
3366 }
3367
3368 for (i = 0; i < vrl->lut_entries; i++)
3369 if (vrl->lut[i] >= vf->num_queue_pairs) {
3370 aq_ret = I40E_ERR_PARAM;
3371 goto err;
3372 }
3373
3374 vsi = pf->vsi[vf->lan_vsi_idx];
3375 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3376 /* send the response to the VF */
3377 err:
3378 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3379 aq_ret);
3380 }
3381
3382 /**
3383 * i40e_vc_get_rss_hena
3384 * @vf: pointer to the VF info
3385 * @msg: pointer to the msg buffer
3386 *
3387 * Return the RSS HENA bits allowed by the hardware
3388 **/
i40e_vc_get_rss_hena(struct i40e_vf * vf,u8 * msg)3389 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3390 {
3391 struct virtchnl_rss_hena *vrh = NULL;
3392 struct i40e_pf *pf = vf->pf;
3393 int aq_ret = 0;
3394 int len = 0;
3395
3396 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3397 aq_ret = I40E_ERR_PARAM;
3398 goto err;
3399 }
3400 len = sizeof(struct virtchnl_rss_hena);
3401
3402 vrh = kzalloc(len, GFP_KERNEL);
3403 if (!vrh) {
3404 aq_ret = I40E_ERR_NO_MEMORY;
3405 len = 0;
3406 goto err;
3407 }
3408 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3409 err:
3410 /* send the response back to the VF */
3411 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3412 aq_ret, (u8 *)vrh, len);
3413 kfree(vrh);
3414 return aq_ret;
3415 }
3416
3417 /**
3418 * i40e_vc_set_rss_hena
3419 * @vf: pointer to the VF info
3420 * @msg: pointer to the msg buffer
3421 *
3422 * Set the RSS HENA bits for the VF
3423 **/
i40e_vc_set_rss_hena(struct i40e_vf * vf,u8 * msg)3424 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3425 {
3426 struct virtchnl_rss_hena *vrh =
3427 (struct virtchnl_rss_hena *)msg;
3428 struct i40e_pf *pf = vf->pf;
3429 struct i40e_hw *hw = &pf->hw;
3430 int aq_ret = 0;
3431
3432 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3433 aq_ret = I40E_ERR_PARAM;
3434 goto err;
3435 }
3436 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3437 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3438 (u32)(vrh->hena >> 32));
3439
3440 /* send the response to the VF */
3441 err:
3442 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3443 }
3444
3445 /**
3446 * i40e_vc_enable_vlan_stripping
3447 * @vf: pointer to the VF info
3448 * @msg: pointer to the msg buffer
3449 *
3450 * Enable vlan header stripping for the VF
3451 **/
i40e_vc_enable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3452 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3453 {
3454 struct i40e_vsi *vsi;
3455 int aq_ret = 0;
3456
3457 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3458 aq_ret = I40E_ERR_PARAM;
3459 goto err;
3460 }
3461
3462 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3463 i40e_vlan_stripping_enable(vsi);
3464
3465 /* send the response to the VF */
3466 err:
3467 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3468 aq_ret);
3469 }
3470
3471 /**
3472 * i40e_vc_disable_vlan_stripping
3473 * @vf: pointer to the VF info
3474 * @msg: pointer to the msg buffer
3475 *
3476 * Disable vlan header stripping for the VF
3477 **/
i40e_vc_disable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3478 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3479 {
3480 struct i40e_vsi *vsi;
3481 int aq_ret = 0;
3482
3483 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3484 aq_ret = I40E_ERR_PARAM;
3485 goto err;
3486 }
3487
3488 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3489 i40e_vlan_stripping_disable(vsi);
3490
3491 /* send the response to the VF */
3492 err:
3493 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3494 aq_ret);
3495 }
3496
3497 /**
3498 * i40e_validate_cloud_filter
3499 * @vf: pointer to VF structure
3500 * @tc_filter: pointer to filter requested
3501 *
3502 * This function validates cloud filter programmed as TC filter for ADq
3503 **/
i40e_validate_cloud_filter(struct i40e_vf * vf,struct virtchnl_filter * tc_filter)3504 static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3505 struct virtchnl_filter *tc_filter)
3506 {
3507 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3508 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3509 struct i40e_pf *pf = vf->pf;
3510 struct i40e_vsi *vsi = NULL;
3511 struct i40e_mac_filter *f;
3512 struct hlist_node *h;
3513 bool found = false;
3514 int bkt;
3515
3516 if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) {
3517 dev_info(&pf->pdev->dev,
3518 "VF %d: ADQ doesn't support this action (%d)\n",
3519 vf->vf_id, tc_filter->action);
3520 goto err;
3521 }
3522
3523 /* action_meta is TC number here to which the filter is applied */
3524 if (!tc_filter->action_meta ||
3525 tc_filter->action_meta > vf->num_tc) {
3526 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3527 vf->vf_id, tc_filter->action_meta);
3528 goto err;
3529 }
3530
3531 /* Check filter if it's programmed for advanced mode or basic mode.
3532 * There are two ADq modes (for VF only),
3533 * 1. Basic mode: intended to allow as many filter options as possible
3534 * to be added to a VF in Non-trusted mode. Main goal is
3535 * to add filters to its own MAC and VLAN id.
3536 * 2. Advanced mode: is for allowing filters to be applied other than
3537 * its own MAC or VLAN. This mode requires the VF to be
3538 * Trusted.
3539 */
3540 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3541 vsi = pf->vsi[vf->lan_vsi_idx];
3542 f = i40e_find_mac(vsi, data.dst_mac);
3543
3544 if (!f) {
3545 dev_info(&pf->pdev->dev,
3546 "Destination MAC %pM doesn't belong to VF %d\n",
3547 data.dst_mac, vf->vf_id);
3548 goto err;
3549 }
3550
3551 if (mask.vlan_id) {
3552 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3553 hlist) {
3554 if (f->vlan == ntohs(data.vlan_id)) {
3555 found = true;
3556 break;
3557 }
3558 }
3559 if (!found) {
3560 dev_info(&pf->pdev->dev,
3561 "VF %d doesn't have any VLAN id %u\n",
3562 vf->vf_id, ntohs(data.vlan_id));
3563 goto err;
3564 }
3565 }
3566 } else {
3567 /* Check if VF is trusted */
3568 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3569 dev_err(&pf->pdev->dev,
3570 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3571 vf->vf_id);
3572 return I40E_ERR_CONFIG;
3573 }
3574 }
3575
3576 if (mask.dst_mac[0] & data.dst_mac[0]) {
3577 if (is_broadcast_ether_addr(data.dst_mac) ||
3578 is_zero_ether_addr(data.dst_mac)) {
3579 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3580 vf->vf_id, data.dst_mac);
3581 goto err;
3582 }
3583 }
3584
3585 if (mask.src_mac[0] & data.src_mac[0]) {
3586 if (is_broadcast_ether_addr(data.src_mac) ||
3587 is_zero_ether_addr(data.src_mac)) {
3588 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3589 vf->vf_id, data.src_mac);
3590 goto err;
3591 }
3592 }
3593
3594 if (mask.dst_port & data.dst_port) {
3595 if (!data.dst_port) {
3596 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3597 vf->vf_id);
3598 goto err;
3599 }
3600 }
3601
3602 if (mask.src_port & data.src_port) {
3603 if (!data.src_port) {
3604 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3605 vf->vf_id);
3606 goto err;
3607 }
3608 }
3609
3610 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3611 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3612 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3613 vf->vf_id);
3614 goto err;
3615 }
3616
3617 if (mask.vlan_id & data.vlan_id) {
3618 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3619 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3620 vf->vf_id);
3621 goto err;
3622 }
3623 }
3624
3625 return I40E_SUCCESS;
3626 err:
3627 return I40E_ERR_CONFIG;
3628 }
3629
3630 /**
3631 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3632 * @vf: pointer to the VF info
3633 * @seid: seid of the vsi it is searching for
3634 **/
i40e_find_vsi_from_seid(struct i40e_vf * vf,u16 seid)3635 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3636 {
3637 struct i40e_pf *pf = vf->pf;
3638 struct i40e_vsi *vsi = NULL;
3639 int i;
3640
3641 for (i = 0; i < vf->num_tc ; i++) {
3642 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3643 if (vsi && vsi->seid == seid)
3644 return vsi;
3645 }
3646 return NULL;
3647 }
3648
3649 /**
3650 * i40e_del_all_cloud_filters
3651 * @vf: pointer to the VF info
3652 *
3653 * This function deletes all cloud filters
3654 **/
i40e_del_all_cloud_filters(struct i40e_vf * vf)3655 static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3656 {
3657 struct i40e_cloud_filter *cfilter = NULL;
3658 struct i40e_pf *pf = vf->pf;
3659 struct i40e_vsi *vsi = NULL;
3660 struct hlist_node *node;
3661 int ret;
3662
3663 hlist_for_each_entry_safe(cfilter, node,
3664 &vf->cloud_filter_list, cloud_node) {
3665 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3666
3667 if (!vsi) {
3668 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3669 vf->vf_id, cfilter->seid);
3670 continue;
3671 }
3672
3673 if (cfilter->dst_port)
3674 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3675 false);
3676 else
3677 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3678 if (ret)
3679 dev_err(&pf->pdev->dev,
3680 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3681 vf->vf_id, ERR_PTR(ret),
3682 i40e_aq_str(&pf->hw,
3683 pf->hw.aq.asq_last_status));
3684
3685 hlist_del(&cfilter->cloud_node);
3686 kfree(cfilter);
3687 vf->num_cloud_filters--;
3688 }
3689 }
3690
3691 /**
3692 * i40e_vc_del_cloud_filter
3693 * @vf: pointer to the VF info
3694 * @msg: pointer to the msg buffer
3695 *
3696 * This function deletes a cloud filter programmed as TC filter for ADq
3697 **/
i40e_vc_del_cloud_filter(struct i40e_vf * vf,u8 * msg)3698 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3699 {
3700 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3701 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3702 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3703 struct i40e_cloud_filter cfilter, *cf = NULL;
3704 struct i40e_pf *pf = vf->pf;
3705 struct i40e_vsi *vsi = NULL;
3706 struct hlist_node *node;
3707 int aq_ret = 0;
3708 int i, ret;
3709
3710 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3711 aq_ret = I40E_ERR_PARAM;
3712 goto err;
3713 }
3714
3715 if (!vf->adq_enabled) {
3716 dev_info(&pf->pdev->dev,
3717 "VF %d: ADq not enabled, can't apply cloud filter\n",
3718 vf->vf_id);
3719 aq_ret = I40E_ERR_PARAM;
3720 goto err;
3721 }
3722
3723 if (i40e_validate_cloud_filter(vf, vcf)) {
3724 dev_info(&pf->pdev->dev,
3725 "VF %d: Invalid input, can't apply cloud filter\n",
3726 vf->vf_id);
3727 aq_ret = I40E_ERR_PARAM;
3728 goto err;
3729 }
3730
3731 memset(&cfilter, 0, sizeof(cfilter));
3732 /* parse destination mac address */
3733 for (i = 0; i < ETH_ALEN; i++)
3734 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3735
3736 /* parse source mac address */
3737 for (i = 0; i < ETH_ALEN; i++)
3738 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3739
3740 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3741 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3742 cfilter.src_port = mask.src_port & tcf.src_port;
3743
3744 switch (vcf->flow_type) {
3745 case VIRTCHNL_TCP_V4_FLOW:
3746 cfilter.n_proto = ETH_P_IP;
3747 if (mask.dst_ip[0] & tcf.dst_ip[0])
3748 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3749 ARRAY_SIZE(tcf.dst_ip));
3750 else if (mask.src_ip[0] & tcf.dst_ip[0])
3751 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3752 ARRAY_SIZE(tcf.dst_ip));
3753 break;
3754 case VIRTCHNL_TCP_V6_FLOW:
3755 cfilter.n_proto = ETH_P_IPV6;
3756 if (mask.dst_ip[3] & tcf.dst_ip[3])
3757 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3758 sizeof(cfilter.ip.v6.dst_ip6));
3759 if (mask.src_ip[3] & tcf.src_ip[3])
3760 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3761 sizeof(cfilter.ip.v6.src_ip6));
3762 break;
3763 default:
3764 /* TC filter can be configured based on different combinations
3765 * and in this case IP is not a part of filter config
3766 */
3767 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3768 vf->vf_id);
3769 }
3770
3771 /* get the vsi to which the tc belongs to */
3772 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3773 cfilter.seid = vsi->seid;
3774 cfilter.flags = vcf->field_flags;
3775
3776 /* Deleting TC filter */
3777 if (tcf.dst_port)
3778 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3779 else
3780 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3781 if (ret) {
3782 dev_err(&pf->pdev->dev,
3783 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3784 vf->vf_id, ERR_PTR(ret),
3785 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3786 goto err;
3787 }
3788
3789 hlist_for_each_entry_safe(cf, node,
3790 &vf->cloud_filter_list, cloud_node) {
3791 if (cf->seid != cfilter.seid)
3792 continue;
3793 if (mask.dst_port)
3794 if (cfilter.dst_port != cf->dst_port)
3795 continue;
3796 if (mask.dst_mac[0])
3797 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3798 continue;
3799 /* for ipv4 data to be valid, only first byte of mask is set */
3800 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3801 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3802 ARRAY_SIZE(tcf.dst_ip)))
3803 continue;
3804 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3805 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3806 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3807 sizeof(cfilter.ip.v6.src_ip6)))
3808 continue;
3809 if (mask.vlan_id)
3810 if (cfilter.vlan_id != cf->vlan_id)
3811 continue;
3812
3813 hlist_del(&cf->cloud_node);
3814 kfree(cf);
3815 vf->num_cloud_filters--;
3816 }
3817
3818 err:
3819 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3820 aq_ret);
3821 }
3822
3823 /**
3824 * i40e_vc_add_cloud_filter
3825 * @vf: pointer to the VF info
3826 * @msg: pointer to the msg buffer
3827 *
3828 * This function adds a cloud filter programmed as TC filter for ADq
3829 **/
i40e_vc_add_cloud_filter(struct i40e_vf * vf,u8 * msg)3830 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3831 {
3832 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3833 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3834 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3835 struct i40e_cloud_filter *cfilter = NULL;
3836 struct i40e_pf *pf = vf->pf;
3837 struct i40e_vsi *vsi = NULL;
3838 int aq_ret = 0;
3839 int i;
3840
3841 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3842 aq_ret = I40E_ERR_PARAM;
3843 goto err_out;
3844 }
3845
3846 if (!vf->adq_enabled) {
3847 dev_info(&pf->pdev->dev,
3848 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3849 vf->vf_id);
3850 aq_ret = I40E_ERR_PARAM;
3851 goto err_out;
3852 }
3853
3854 if (i40e_validate_cloud_filter(vf, vcf)) {
3855 dev_info(&pf->pdev->dev,
3856 "VF %d: Invalid input/s, can't apply cloud filter\n",
3857 vf->vf_id);
3858 aq_ret = I40E_ERR_PARAM;
3859 goto err_out;
3860 }
3861
3862 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3863 if (!cfilter) {
3864 aq_ret = -ENOMEM;
3865 goto err_out;
3866 }
3867
3868 /* parse destination mac address */
3869 for (i = 0; i < ETH_ALEN; i++)
3870 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3871
3872 /* parse source mac address */
3873 for (i = 0; i < ETH_ALEN; i++)
3874 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3875
3876 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3877 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3878 cfilter->src_port = mask.src_port & tcf.src_port;
3879
3880 switch (vcf->flow_type) {
3881 case VIRTCHNL_TCP_V4_FLOW:
3882 cfilter->n_proto = ETH_P_IP;
3883 if (mask.dst_ip[0] & tcf.dst_ip[0])
3884 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3885 ARRAY_SIZE(tcf.dst_ip));
3886 else if (mask.src_ip[0] & tcf.dst_ip[0])
3887 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3888 ARRAY_SIZE(tcf.dst_ip));
3889 break;
3890 case VIRTCHNL_TCP_V6_FLOW:
3891 cfilter->n_proto = ETH_P_IPV6;
3892 if (mask.dst_ip[3] & tcf.dst_ip[3])
3893 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3894 sizeof(cfilter->ip.v6.dst_ip6));
3895 if (mask.src_ip[3] & tcf.src_ip[3])
3896 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3897 sizeof(cfilter->ip.v6.src_ip6));
3898 break;
3899 default:
3900 /* TC filter can be configured based on different combinations
3901 * and in this case IP is not a part of filter config
3902 */
3903 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3904 vf->vf_id);
3905 }
3906
3907 /* get the VSI to which the TC belongs to */
3908 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3909 cfilter->seid = vsi->seid;
3910 cfilter->flags = vcf->field_flags;
3911
3912 /* Adding cloud filter programmed as TC filter */
3913 if (tcf.dst_port)
3914 aq_ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3915 else
3916 aq_ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3917 if (aq_ret) {
3918 dev_err(&pf->pdev->dev,
3919 "VF %d: Failed to add cloud filter, err %pe aq_err %s\n",
3920 vf->vf_id, ERR_PTR(aq_ret),
3921 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3922 goto err_free;
3923 }
3924
3925 INIT_HLIST_NODE(&cfilter->cloud_node);
3926 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3927 /* release the pointer passing it to the collection */
3928 cfilter = NULL;
3929 vf->num_cloud_filters++;
3930 err_free:
3931 kfree(cfilter);
3932 err_out:
3933 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
3934 aq_ret);
3935 }
3936
3937 /**
3938 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
3939 * @vf: pointer to the VF info
3940 * @msg: pointer to the msg buffer
3941 **/
i40e_vc_add_qch_msg(struct i40e_vf * vf,u8 * msg)3942 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
3943 {
3944 struct virtchnl_tc_info *tci =
3945 (struct virtchnl_tc_info *)msg;
3946 struct i40e_pf *pf = vf->pf;
3947 struct i40e_link_status *ls = &pf->hw.phy.link_info;
3948 int i, adq_request_qps = 0;
3949 int aq_ret = 0;
3950 u64 speed = 0;
3951
3952 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3953 aq_ret = I40E_ERR_PARAM;
3954 goto err;
3955 }
3956
3957 /* ADq cannot be applied if spoof check is ON */
3958 if (vf->spoofchk) {
3959 dev_err(&pf->pdev->dev,
3960 "Spoof check is ON, turn it OFF to enable ADq\n");
3961 aq_ret = I40E_ERR_PARAM;
3962 goto err;
3963 }
3964
3965 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
3966 dev_err(&pf->pdev->dev,
3967 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
3968 vf->vf_id);
3969 aq_ret = I40E_ERR_PARAM;
3970 goto err;
3971 }
3972
3973 /* max number of traffic classes for VF currently capped at 4 */
3974 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
3975 dev_err(&pf->pdev->dev,
3976 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
3977 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
3978 aq_ret = I40E_ERR_PARAM;
3979 goto err;
3980 }
3981
3982 /* validate queues for each TC */
3983 for (i = 0; i < tci->num_tc; i++)
3984 if (!tci->list[i].count ||
3985 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
3986 dev_err(&pf->pdev->dev,
3987 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
3988 vf->vf_id, i, tci->list[i].count,
3989 I40E_DEFAULT_QUEUES_PER_VF);
3990 aq_ret = I40E_ERR_PARAM;
3991 goto err;
3992 }
3993
3994 /* need Max VF queues but already have default number of queues */
3995 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
3996
3997 if (pf->queues_left < adq_request_qps) {
3998 dev_err(&pf->pdev->dev,
3999 "No queues left to allocate to VF %d\n",
4000 vf->vf_id);
4001 aq_ret = I40E_ERR_PARAM;
4002 goto err;
4003 } else {
4004 /* we need to allocate max VF queues to enable ADq so as to
4005 * make sure ADq enabled VF always gets back queues when it
4006 * goes through a reset.
4007 */
4008 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
4009 }
4010
4011 /* get link speed in MB to validate rate limit */
4012 speed = i40e_vc_link_speed2mbps(ls->link_speed);
4013 if (speed == SPEED_UNKNOWN) {
4014 dev_err(&pf->pdev->dev,
4015 "Cannot detect link speed\n");
4016 aq_ret = I40E_ERR_PARAM;
4017 goto err;
4018 }
4019
4020 /* parse data from the queue channel info */
4021 vf->num_tc = tci->num_tc;
4022 for (i = 0; i < vf->num_tc; i++) {
4023 if (tci->list[i].max_tx_rate) {
4024 if (tci->list[i].max_tx_rate > speed) {
4025 dev_err(&pf->pdev->dev,
4026 "Invalid max tx rate %llu specified for VF %d.",
4027 tci->list[i].max_tx_rate,
4028 vf->vf_id);
4029 aq_ret = I40E_ERR_PARAM;
4030 goto err;
4031 } else {
4032 vf->ch[i].max_tx_rate =
4033 tci->list[i].max_tx_rate;
4034 }
4035 }
4036 vf->ch[i].num_qps = tci->list[i].count;
4037 }
4038
4039 /* set this flag only after making sure all inputs are sane */
4040 vf->adq_enabled = true;
4041
4042 /* reset the VF in order to allocate resources */
4043 i40e_vc_reset_vf(vf, true);
4044
4045 return I40E_SUCCESS;
4046
4047 /* send the response to the VF */
4048 err:
4049 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
4050 aq_ret);
4051 }
4052
4053 /**
4054 * i40e_vc_del_qch_msg
4055 * @vf: pointer to the VF info
4056 * @msg: pointer to the msg buffer
4057 **/
i40e_vc_del_qch_msg(struct i40e_vf * vf,u8 * msg)4058 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
4059 {
4060 struct i40e_pf *pf = vf->pf;
4061 int aq_ret = 0;
4062
4063 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4064 aq_ret = I40E_ERR_PARAM;
4065 goto err;
4066 }
4067
4068 if (vf->adq_enabled) {
4069 i40e_del_all_cloud_filters(vf);
4070 i40e_del_qch(vf);
4071 vf->adq_enabled = false;
4072 vf->num_tc = 0;
4073 dev_info(&pf->pdev->dev,
4074 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
4075 vf->vf_id);
4076 } else {
4077 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
4078 vf->vf_id);
4079 aq_ret = I40E_ERR_PARAM;
4080 }
4081
4082 /* reset the VF in order to allocate resources */
4083 i40e_vc_reset_vf(vf, true);
4084
4085 return I40E_SUCCESS;
4086
4087 err:
4088 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
4089 aq_ret);
4090 }
4091
4092 /**
4093 * i40e_vc_process_vf_msg
4094 * @pf: pointer to the PF structure
4095 * @vf_id: source VF id
4096 * @v_opcode: operation code
4097 * @v_retval: unused return value code
4098 * @msg: pointer to the msg buffer
4099 * @msglen: msg length
4100 *
4101 * called from the common aeq/arq handler to
4102 * process request from VF
4103 **/
i40e_vc_process_vf_msg(struct i40e_pf * pf,s16 vf_id,u32 v_opcode,u32 __always_unused v_retval,u8 * msg,u16 msglen)4104 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4105 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4106 {
4107 struct i40e_hw *hw = &pf->hw;
4108 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4109 struct i40e_vf *vf;
4110 int ret;
4111
4112 pf->vf_aq_requests++;
4113 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4114 return -EINVAL;
4115 vf = &(pf->vf[local_vf_id]);
4116
4117 /* Check if VF is disabled. */
4118 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4119 return I40E_ERR_PARAM;
4120
4121 /* perform basic checks on the msg */
4122 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4123
4124 if (ret) {
4125 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
4126 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4127 local_vf_id, v_opcode, msglen);
4128 switch (ret) {
4129 case VIRTCHNL_STATUS_ERR_PARAM:
4130 return -EPERM;
4131 default:
4132 return -EINVAL;
4133 }
4134 }
4135
4136 switch (v_opcode) {
4137 case VIRTCHNL_OP_VERSION:
4138 ret = i40e_vc_get_version_msg(vf, msg);
4139 break;
4140 case VIRTCHNL_OP_GET_VF_RESOURCES:
4141 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4142 i40e_vc_notify_vf_link_state(vf);
4143 break;
4144 case VIRTCHNL_OP_RESET_VF:
4145 i40e_vc_reset_vf(vf, false);
4146 ret = 0;
4147 break;
4148 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4149 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4150 break;
4151 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4152 ret = i40e_vc_config_queues_msg(vf, msg);
4153 break;
4154 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4155 ret = i40e_vc_config_irq_map_msg(vf, msg);
4156 break;
4157 case VIRTCHNL_OP_ENABLE_QUEUES:
4158 ret = i40e_vc_enable_queues_msg(vf, msg);
4159 i40e_vc_notify_vf_link_state(vf);
4160 break;
4161 case VIRTCHNL_OP_DISABLE_QUEUES:
4162 ret = i40e_vc_disable_queues_msg(vf, msg);
4163 break;
4164 case VIRTCHNL_OP_ADD_ETH_ADDR:
4165 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4166 break;
4167 case VIRTCHNL_OP_DEL_ETH_ADDR:
4168 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4169 break;
4170 case VIRTCHNL_OP_ADD_VLAN:
4171 ret = i40e_vc_add_vlan_msg(vf, msg);
4172 break;
4173 case VIRTCHNL_OP_DEL_VLAN:
4174 ret = i40e_vc_remove_vlan_msg(vf, msg);
4175 break;
4176 case VIRTCHNL_OP_GET_STATS:
4177 ret = i40e_vc_get_stats_msg(vf, msg);
4178 break;
4179 case VIRTCHNL_OP_IWARP:
4180 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
4181 break;
4182 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
4183 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, true);
4184 break;
4185 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
4186 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, false);
4187 break;
4188 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4189 ret = i40e_vc_config_rss_key(vf, msg);
4190 break;
4191 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4192 ret = i40e_vc_config_rss_lut(vf, msg);
4193 break;
4194 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4195 ret = i40e_vc_get_rss_hena(vf, msg);
4196 break;
4197 case VIRTCHNL_OP_SET_RSS_HENA:
4198 ret = i40e_vc_set_rss_hena(vf, msg);
4199 break;
4200 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4201 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4202 break;
4203 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4204 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4205 break;
4206 case VIRTCHNL_OP_REQUEST_QUEUES:
4207 ret = i40e_vc_request_queues_msg(vf, msg);
4208 break;
4209 case VIRTCHNL_OP_ENABLE_CHANNELS:
4210 ret = i40e_vc_add_qch_msg(vf, msg);
4211 break;
4212 case VIRTCHNL_OP_DISABLE_CHANNELS:
4213 ret = i40e_vc_del_qch_msg(vf, msg);
4214 break;
4215 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4216 ret = i40e_vc_add_cloud_filter(vf, msg);
4217 break;
4218 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4219 ret = i40e_vc_del_cloud_filter(vf, msg);
4220 break;
4221 case VIRTCHNL_OP_UNKNOWN:
4222 default:
4223 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4224 v_opcode, local_vf_id);
4225 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4226 I40E_ERR_NOT_IMPLEMENTED);
4227 break;
4228 }
4229
4230 return ret;
4231 }
4232
4233 /**
4234 * i40e_vc_process_vflr_event
4235 * @pf: pointer to the PF structure
4236 *
4237 * called from the vlfr irq handler to
4238 * free up VF resources and state variables
4239 **/
i40e_vc_process_vflr_event(struct i40e_pf * pf)4240 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4241 {
4242 struct i40e_hw *hw = &pf->hw;
4243 u32 reg, reg_idx, bit_idx;
4244 struct i40e_vf *vf;
4245 int vf_id;
4246
4247 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4248 return 0;
4249
4250 /* Re-enable the VFLR interrupt cause here, before looking for which
4251 * VF got reset. Otherwise, if another VF gets a reset while the
4252 * first one is being processed, that interrupt will be lost, and
4253 * that VF will be stuck in reset forever.
4254 */
4255 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4256 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4257 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4258 i40e_flush(hw);
4259
4260 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4261 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4262 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4263 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4264 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4265 vf = &pf->vf[vf_id];
4266 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4267 if (reg & BIT(bit_idx))
4268 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4269 i40e_reset_vf(vf, true);
4270 }
4271
4272 return 0;
4273 }
4274
4275 /**
4276 * i40e_validate_vf
4277 * @pf: the physical function
4278 * @vf_id: VF identifier
4279 *
4280 * Check that the VF is enabled and the VSI exists.
4281 *
4282 * Returns 0 on success, negative on failure
4283 **/
i40e_validate_vf(struct i40e_pf * pf,int vf_id)4284 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4285 {
4286 struct i40e_vsi *vsi;
4287 struct i40e_vf *vf;
4288 int ret = 0;
4289
4290 if (vf_id >= pf->num_alloc_vfs) {
4291 dev_err(&pf->pdev->dev,
4292 "Invalid VF Identifier %d\n", vf_id);
4293 ret = -EINVAL;
4294 goto err_out;
4295 }
4296 vf = &pf->vf[vf_id];
4297 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4298 if (!vsi)
4299 ret = -EINVAL;
4300 err_out:
4301 return ret;
4302 }
4303
4304 /**
4305 * i40e_ndo_set_vf_mac
4306 * @netdev: network interface device structure
4307 * @vf_id: VF identifier
4308 * @mac: mac address
4309 *
4310 * program VF mac address
4311 **/
i40e_ndo_set_vf_mac(struct net_device * netdev,int vf_id,u8 * mac)4312 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4313 {
4314 struct i40e_netdev_priv *np = netdev_priv(netdev);
4315 struct i40e_vsi *vsi = np->vsi;
4316 struct i40e_pf *pf = vsi->back;
4317 struct i40e_mac_filter *f;
4318 struct i40e_vf *vf;
4319 int ret = 0;
4320 struct hlist_node *h;
4321 int bkt;
4322 u8 i;
4323
4324 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4325 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4326 return -EAGAIN;
4327 }
4328
4329 /* validate the request */
4330 ret = i40e_validate_vf(pf, vf_id);
4331 if (ret)
4332 goto error_param;
4333
4334 vf = &pf->vf[vf_id];
4335
4336 /* When the VF is resetting wait until it is done.
4337 * It can take up to 200 milliseconds,
4338 * but wait for up to 300 milliseconds to be safe.
4339 * Acquire the VSI pointer only after the VF has been
4340 * properly initialized.
4341 */
4342 for (i = 0; i < 15; i++) {
4343 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4344 break;
4345 msleep(20);
4346 }
4347 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4348 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4349 vf_id);
4350 ret = -EAGAIN;
4351 goto error_param;
4352 }
4353 vsi = pf->vsi[vf->lan_vsi_idx];
4354
4355 if (is_multicast_ether_addr(mac)) {
4356 dev_err(&pf->pdev->dev,
4357 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4358 ret = -EINVAL;
4359 goto error_param;
4360 }
4361
4362 /* Lock once because below invoked function add/del_filter requires
4363 * mac_filter_hash_lock to be held
4364 */
4365 spin_lock_bh(&vsi->mac_filter_hash_lock);
4366
4367 /* delete the temporary mac address */
4368 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4369 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4370
4371 /* Delete all the filters for this VSI - we're going to kill it
4372 * anyway.
4373 */
4374 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4375 __i40e_del_filter(vsi, f);
4376
4377 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4378
4379 /* program mac filter */
4380 if (i40e_sync_vsi_filters(vsi)) {
4381 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4382 ret = -EIO;
4383 goto error_param;
4384 }
4385 ether_addr_copy(vf->default_lan_addr.addr, mac);
4386
4387 if (is_zero_ether_addr(mac)) {
4388 vf->pf_set_mac = false;
4389 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4390 } else {
4391 vf->pf_set_mac = true;
4392 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4393 mac, vf_id);
4394 }
4395
4396 /* Force the VF interface down so it has to bring up with new MAC
4397 * address
4398 */
4399 i40e_vc_reset_vf(vf, true);
4400 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4401
4402 error_param:
4403 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4404 return ret;
4405 }
4406
4407 /**
4408 * i40e_ndo_set_vf_port_vlan
4409 * @netdev: network interface device structure
4410 * @vf_id: VF identifier
4411 * @vlan_id: mac address
4412 * @qos: priority setting
4413 * @vlan_proto: vlan protocol
4414 *
4415 * program VF vlan id and/or qos
4416 **/
i40e_ndo_set_vf_port_vlan(struct net_device * netdev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)4417 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4418 u16 vlan_id, u8 qos, __be16 vlan_proto)
4419 {
4420 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4421 struct i40e_netdev_priv *np = netdev_priv(netdev);
4422 bool allmulti = false, alluni = false;
4423 struct i40e_pf *pf = np->vsi->back;
4424 struct i40e_vsi *vsi;
4425 struct i40e_vf *vf;
4426 int ret = 0;
4427
4428 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4429 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4430 return -EAGAIN;
4431 }
4432
4433 /* validate the request */
4434 ret = i40e_validate_vf(pf, vf_id);
4435 if (ret)
4436 goto error_pvid;
4437
4438 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4439 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4440 ret = -EINVAL;
4441 goto error_pvid;
4442 }
4443
4444 if (vlan_proto != htons(ETH_P_8021Q)) {
4445 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4446 ret = -EPROTONOSUPPORT;
4447 goto error_pvid;
4448 }
4449
4450 vf = &pf->vf[vf_id];
4451 vsi = pf->vsi[vf->lan_vsi_idx];
4452 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4453 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4454 vf_id);
4455 ret = -EAGAIN;
4456 goto error_pvid;
4457 }
4458
4459 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4460 /* duplicate request, so just return success */
4461 goto error_pvid;
4462
4463 i40e_vlan_stripping_enable(vsi);
4464
4465 /* Locked once because multiple functions below iterate list */
4466 spin_lock_bh(&vsi->mac_filter_hash_lock);
4467
4468 /* Check for condition where there was already a port VLAN ID
4469 * filter set and now it is being deleted by setting it to zero.
4470 * Additionally check for the condition where there was a port
4471 * VLAN but now there is a new and different port VLAN being set.
4472 * Before deleting all the old VLAN filters we must add new ones
4473 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4474 * MAC addresses deleted.
4475 */
4476 if ((!(vlan_id || qos) ||
4477 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4478 vsi->info.pvid) {
4479 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4480 if (ret) {
4481 dev_info(&vsi->back->pdev->dev,
4482 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4483 vsi->back->hw.aq.asq_last_status);
4484 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4485 goto error_pvid;
4486 }
4487 }
4488
4489 if (vsi->info.pvid) {
4490 /* remove all filters on the old VLAN */
4491 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4492 VLAN_VID_MASK));
4493 }
4494
4495 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4496
4497 /* disable promisc modes in case they were enabled */
4498 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4499 allmulti, alluni);
4500 if (ret) {
4501 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4502 goto error_pvid;
4503 }
4504
4505 if (vlan_id || qos)
4506 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4507 else
4508 i40e_vsi_remove_pvid(vsi);
4509 spin_lock_bh(&vsi->mac_filter_hash_lock);
4510
4511 if (vlan_id) {
4512 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4513 vlan_id, qos, vf_id);
4514
4515 /* add new VLAN filter for each MAC */
4516 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4517 if (ret) {
4518 dev_info(&vsi->back->pdev->dev,
4519 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4520 vsi->back->hw.aq.asq_last_status);
4521 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4522 goto error_pvid;
4523 }
4524
4525 /* remove the previously added non-VLAN MAC filters */
4526 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4527 }
4528
4529 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4530
4531 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4532 alluni = true;
4533
4534 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4535 allmulti = true;
4536
4537 /* Schedule the worker thread to take care of applying changes */
4538 i40e_service_event_schedule(vsi->back);
4539
4540 if (ret) {
4541 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4542 goto error_pvid;
4543 }
4544
4545 /* The Port VLAN needs to be saved across resets the same as the
4546 * default LAN MAC address.
4547 */
4548 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4549
4550 i40e_vc_reset_vf(vf, true);
4551 /* During reset the VF got a new VSI, so refresh a pointer. */
4552 vsi = pf->vsi[vf->lan_vsi_idx];
4553
4554 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4555 if (ret) {
4556 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4557 goto error_pvid;
4558 }
4559
4560 ret = 0;
4561
4562 error_pvid:
4563 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4564 return ret;
4565 }
4566
4567 /**
4568 * i40e_ndo_set_vf_bw
4569 * @netdev: network interface device structure
4570 * @vf_id: VF identifier
4571 * @min_tx_rate: Minimum Tx rate
4572 * @max_tx_rate: Maximum Tx rate
4573 *
4574 * configure VF Tx rate
4575 **/
i40e_ndo_set_vf_bw(struct net_device * netdev,int vf_id,int min_tx_rate,int max_tx_rate)4576 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4577 int max_tx_rate)
4578 {
4579 struct i40e_netdev_priv *np = netdev_priv(netdev);
4580 struct i40e_pf *pf = np->vsi->back;
4581 struct i40e_vsi *vsi;
4582 struct i40e_vf *vf;
4583 int ret = 0;
4584
4585 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4586 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4587 return -EAGAIN;
4588 }
4589
4590 /* validate the request */
4591 ret = i40e_validate_vf(pf, vf_id);
4592 if (ret)
4593 goto error;
4594
4595 if (min_tx_rate) {
4596 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4597 min_tx_rate, vf_id);
4598 ret = -EINVAL;
4599 goto error;
4600 }
4601
4602 vf = &pf->vf[vf_id];
4603 vsi = pf->vsi[vf->lan_vsi_idx];
4604 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4605 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4606 vf_id);
4607 ret = -EAGAIN;
4608 goto error;
4609 }
4610
4611 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4612 if (ret)
4613 goto error;
4614
4615 vf->tx_rate = max_tx_rate;
4616 error:
4617 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4618 return ret;
4619 }
4620
4621 /**
4622 * i40e_ndo_get_vf_config
4623 * @netdev: network interface device structure
4624 * @vf_id: VF identifier
4625 * @ivi: VF configuration structure
4626 *
4627 * return VF configuration
4628 **/
i40e_ndo_get_vf_config(struct net_device * netdev,int vf_id,struct ifla_vf_info * ivi)4629 int i40e_ndo_get_vf_config(struct net_device *netdev,
4630 int vf_id, struct ifla_vf_info *ivi)
4631 {
4632 struct i40e_netdev_priv *np = netdev_priv(netdev);
4633 struct i40e_vsi *vsi = np->vsi;
4634 struct i40e_pf *pf = vsi->back;
4635 struct i40e_vf *vf;
4636 int ret = 0;
4637
4638 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4639 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4640 return -EAGAIN;
4641 }
4642
4643 /* validate the request */
4644 ret = i40e_validate_vf(pf, vf_id);
4645 if (ret)
4646 goto error_param;
4647
4648 vf = &pf->vf[vf_id];
4649 /* first vsi is always the LAN vsi */
4650 vsi = pf->vsi[vf->lan_vsi_idx];
4651 if (!vsi) {
4652 ret = -ENOENT;
4653 goto error_param;
4654 }
4655
4656 ivi->vf = vf_id;
4657
4658 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4659
4660 ivi->max_tx_rate = vf->tx_rate;
4661 ivi->min_tx_rate = 0;
4662 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
4663 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
4664 I40E_VLAN_PRIORITY_SHIFT;
4665 if (vf->link_forced == false)
4666 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4667 else if (vf->link_up == true)
4668 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4669 else
4670 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4671 ivi->spoofchk = vf->spoofchk;
4672 ivi->trusted = vf->trusted;
4673 ret = 0;
4674
4675 error_param:
4676 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4677 return ret;
4678 }
4679
4680 /**
4681 * i40e_ndo_set_vf_link_state
4682 * @netdev: network interface device structure
4683 * @vf_id: VF identifier
4684 * @link: required link state
4685 *
4686 * Set the link state of a specified VF, regardless of physical link state
4687 **/
i40e_ndo_set_vf_link_state(struct net_device * netdev,int vf_id,int link)4688 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4689 {
4690 struct i40e_netdev_priv *np = netdev_priv(netdev);
4691 struct i40e_pf *pf = np->vsi->back;
4692 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4693 struct virtchnl_pf_event pfe;
4694 struct i40e_hw *hw = &pf->hw;
4695 struct i40e_vsi *vsi;
4696 unsigned long q_map;
4697 struct i40e_vf *vf;
4698 int abs_vf_id;
4699 int ret = 0;
4700 int tmp;
4701
4702 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4703 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4704 return -EAGAIN;
4705 }
4706
4707 /* validate the request */
4708 if (vf_id >= pf->num_alloc_vfs) {
4709 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4710 ret = -EINVAL;
4711 goto error_out;
4712 }
4713
4714 vf = &pf->vf[vf_id];
4715 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4716
4717 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4718 pfe.severity = PF_EVENT_SEVERITY_INFO;
4719
4720 switch (link) {
4721 case IFLA_VF_LINK_STATE_AUTO:
4722 vf->link_forced = false;
4723 vf->is_disabled_from_host = false;
4724 /* reset needed to reinit VF resources */
4725 i40e_vc_reset_vf(vf, true);
4726 i40e_set_vf_link_state(vf, &pfe, ls);
4727 break;
4728 case IFLA_VF_LINK_STATE_ENABLE:
4729 vf->link_forced = true;
4730 vf->link_up = true;
4731 vf->is_disabled_from_host = false;
4732 /* reset needed to reinit VF resources */
4733 i40e_vc_reset_vf(vf, true);
4734 i40e_set_vf_link_state(vf, &pfe, ls);
4735 break;
4736 case IFLA_VF_LINK_STATE_DISABLE:
4737 vf->link_forced = true;
4738 vf->link_up = false;
4739 i40e_set_vf_link_state(vf, &pfe, ls);
4740
4741 vsi = pf->vsi[vf->lan_vsi_idx];
4742 q_map = BIT(vsi->num_queue_pairs) - 1;
4743
4744 vf->is_disabled_from_host = true;
4745
4746 /* Try to stop both Tx&Rx rings even if one of the calls fails
4747 * to ensure we stop the rings even in case of errors.
4748 * If any of them returns with an error then the first
4749 * error that occurred will be returned.
4750 */
4751 tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false);
4752 ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false);
4753
4754 ret = tmp ? tmp : ret;
4755 break;
4756 default:
4757 ret = -EINVAL;
4758 goto error_out;
4759 }
4760 /* Notify the VF of its new link state */
4761 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4762 0, (u8 *)&pfe, sizeof(pfe), NULL);
4763
4764 error_out:
4765 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4766 return ret;
4767 }
4768
4769 /**
4770 * i40e_ndo_set_vf_spoofchk
4771 * @netdev: network interface device structure
4772 * @vf_id: VF identifier
4773 * @enable: flag to enable or disable feature
4774 *
4775 * Enable or disable VF spoof checking
4776 **/
i40e_ndo_set_vf_spoofchk(struct net_device * netdev,int vf_id,bool enable)4777 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4778 {
4779 struct i40e_netdev_priv *np = netdev_priv(netdev);
4780 struct i40e_vsi *vsi = np->vsi;
4781 struct i40e_pf *pf = vsi->back;
4782 struct i40e_vsi_context ctxt;
4783 struct i40e_hw *hw = &pf->hw;
4784 struct i40e_vf *vf;
4785 int ret = 0;
4786
4787 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4788 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4789 return -EAGAIN;
4790 }
4791
4792 /* validate the request */
4793 if (vf_id >= pf->num_alloc_vfs) {
4794 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4795 ret = -EINVAL;
4796 goto out;
4797 }
4798
4799 vf = &(pf->vf[vf_id]);
4800 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4801 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4802 vf_id);
4803 ret = -EAGAIN;
4804 goto out;
4805 }
4806
4807 if (enable == vf->spoofchk)
4808 goto out;
4809
4810 vf->spoofchk = enable;
4811 memset(&ctxt, 0, sizeof(ctxt));
4812 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4813 ctxt.pf_num = pf->hw.pf_id;
4814 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4815 if (enable)
4816 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4817 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4818 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4819 if (ret) {
4820 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4821 ret);
4822 ret = -EIO;
4823 }
4824 out:
4825 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4826 return ret;
4827 }
4828
4829 /**
4830 * i40e_ndo_set_vf_trust
4831 * @netdev: network interface device structure of the pf
4832 * @vf_id: VF identifier
4833 * @setting: trust setting
4834 *
4835 * Enable or disable VF trust setting
4836 **/
i40e_ndo_set_vf_trust(struct net_device * netdev,int vf_id,bool setting)4837 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4838 {
4839 struct i40e_netdev_priv *np = netdev_priv(netdev);
4840 struct i40e_pf *pf = np->vsi->back;
4841 struct i40e_vf *vf;
4842 int ret = 0;
4843
4844 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4845 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4846 return -EAGAIN;
4847 }
4848
4849 /* validate the request */
4850 if (vf_id >= pf->num_alloc_vfs) {
4851 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4852 ret = -EINVAL;
4853 goto out;
4854 }
4855
4856 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4857 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4858 ret = -EINVAL;
4859 goto out;
4860 }
4861
4862 vf = &pf->vf[vf_id];
4863
4864 if (setting == vf->trusted)
4865 goto out;
4866
4867 vf->trusted = setting;
4868
4869 /* request PF to sync mac/vlan filters for the VF */
4870 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
4871 pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
4872
4873 i40e_vc_reset_vf(vf, true);
4874 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4875 vf_id, setting ? "" : "un");
4876
4877 if (vf->adq_enabled) {
4878 if (!vf->trusted) {
4879 dev_info(&pf->pdev->dev,
4880 "VF %u no longer Trusted, deleting all cloud filters\n",
4881 vf_id);
4882 i40e_del_all_cloud_filters(vf);
4883 }
4884 }
4885
4886 out:
4887 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4888 return ret;
4889 }
4890
4891 /**
4892 * i40e_get_vf_stats - populate some stats for the VF
4893 * @netdev: the netdev of the PF
4894 * @vf_id: the host OS identifier (0-127)
4895 * @vf_stats: pointer to the OS memory to be initialized
4896 */
i40e_get_vf_stats(struct net_device * netdev,int vf_id,struct ifla_vf_stats * vf_stats)4897 int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4898 struct ifla_vf_stats *vf_stats)
4899 {
4900 struct i40e_netdev_priv *np = netdev_priv(netdev);
4901 struct i40e_pf *pf = np->vsi->back;
4902 struct i40e_eth_stats *stats;
4903 struct i40e_vsi *vsi;
4904 struct i40e_vf *vf;
4905
4906 /* validate the request */
4907 if (i40e_validate_vf(pf, vf_id))
4908 return -EINVAL;
4909
4910 vf = &pf->vf[vf_id];
4911 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4912 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4913 return -EBUSY;
4914 }
4915
4916 vsi = pf->vsi[vf->lan_vsi_idx];
4917 if (!vsi)
4918 return -EINVAL;
4919
4920 i40e_update_eth_stats(vsi);
4921 stats = &vsi->eth_stats;
4922
4923 memset(vf_stats, 0, sizeof(*vf_stats));
4924
4925 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4926 stats->rx_multicast;
4927 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
4928 stats->tx_multicast;
4929 vf_stats->rx_bytes = stats->rx_bytes;
4930 vf_stats->tx_bytes = stats->tx_bytes;
4931 vf_stats->broadcast = stats->rx_broadcast;
4932 vf_stats->multicast = stats->rx_multicast;
4933 vf_stats->rx_dropped = stats->rx_discards;
4934 vf_stats->tx_dropped = stats->tx_discards;
4935
4936 return 0;
4937 }
4938