1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4 #include "i40e.h"
5 #include "i40e_lan_hmc.h"
6 #include "i40e_virtchnl_pf.h"
7
8 /*********************notification routines***********************/
9
10 /**
11 * i40e_vc_vf_broadcast
12 * @pf: pointer to the PF structure
13 * @v_opcode: operation code
14 * @v_retval: return value
15 * @msg: pointer to the msg buffer
16 * @msglen: msg length
17 *
18 * send a message to all VFs on a given PF
19 **/
i40e_vc_vf_broadcast(struct i40e_pf * pf,enum virtchnl_ops v_opcode,int v_retval,u8 * msg,u16 msglen)20 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
21 enum virtchnl_ops v_opcode,
22 int v_retval, u8 *msg,
23 u16 msglen)
24 {
25 struct i40e_hw *hw = &pf->hw;
26 struct i40e_vf *vf = pf->vf;
27 int i;
28
29 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
30 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
31 /* Not all vfs are enabled so skip the ones that are not */
32 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
33 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
34 continue;
35
36 /* Ignore return value on purpose - a given VF may fail, but
37 * we need to keep going and send to all of them
38 */
39 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
40 msg, msglen, NULL);
41 }
42 }
43
44 /**
45 * i40e_vc_link_speed2mbps
46 * converts i40e_aq_link_speed to integer value of Mbps
47 * @link_speed: the speed to convert
48 *
49 * return the speed as direct value of Mbps.
50 **/
51 static u32
i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)52 i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)
53 {
54 switch (link_speed) {
55 case I40E_LINK_SPEED_100MB:
56 return SPEED_100;
57 case I40E_LINK_SPEED_1GB:
58 return SPEED_1000;
59 case I40E_LINK_SPEED_2_5GB:
60 return SPEED_2500;
61 case I40E_LINK_SPEED_5GB:
62 return SPEED_5000;
63 case I40E_LINK_SPEED_10GB:
64 return SPEED_10000;
65 case I40E_LINK_SPEED_20GB:
66 return SPEED_20000;
67 case I40E_LINK_SPEED_25GB:
68 return SPEED_25000;
69 case I40E_LINK_SPEED_40GB:
70 return SPEED_40000;
71 case I40E_LINK_SPEED_UNKNOWN:
72 return SPEED_UNKNOWN;
73 }
74 return SPEED_UNKNOWN;
75 }
76
77 /**
78 * i40e_set_vf_link_state
79 * @vf: pointer to the VF structure
80 * @pfe: pointer to PF event structure
81 * @ls: pointer to link status structure
82 *
83 * set a link state on a single vf
84 **/
i40e_set_vf_link_state(struct i40e_vf * vf,struct virtchnl_pf_event * pfe,struct i40e_link_status * ls)85 static void i40e_set_vf_link_state(struct i40e_vf *vf,
86 struct virtchnl_pf_event *pfe, struct i40e_link_status *ls)
87 {
88 u8 link_status = ls->link_info & I40E_AQ_LINK_UP;
89
90 if (vf->link_forced)
91 link_status = vf->link_up;
92
93 if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
94 pfe->event_data.link_event_adv.link_speed = link_status ?
95 i40e_vc_link_speed2mbps(ls->link_speed) : 0;
96 pfe->event_data.link_event_adv.link_status = link_status;
97 } else {
98 pfe->event_data.link_event.link_speed = link_status ?
99 i40e_virtchnl_link_speed(ls->link_speed) : 0;
100 pfe->event_data.link_event.link_status = link_status;
101 }
102 }
103
104 /**
105 * i40e_vc_notify_vf_link_state
106 * @vf: pointer to the VF structure
107 *
108 * send a link status message to a single VF
109 **/
i40e_vc_notify_vf_link_state(struct i40e_vf * vf)110 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
111 {
112 struct virtchnl_pf_event pfe;
113 struct i40e_pf *pf = vf->pf;
114 struct i40e_hw *hw = &pf->hw;
115 struct i40e_link_status *ls = &pf->hw.phy.link_info;
116 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
117
118 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
119 pfe.severity = PF_EVENT_SEVERITY_INFO;
120
121 i40e_set_vf_link_state(vf, &pfe, ls);
122
123 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
124 0, (u8 *)&pfe, sizeof(pfe), NULL);
125 }
126
127 /**
128 * i40e_vc_notify_link_state
129 * @pf: pointer to the PF structure
130 *
131 * send a link status message to all VFs on a given PF
132 **/
i40e_vc_notify_link_state(struct i40e_pf * pf)133 void i40e_vc_notify_link_state(struct i40e_pf *pf)
134 {
135 int i;
136
137 for (i = 0; i < pf->num_alloc_vfs; i++)
138 i40e_vc_notify_vf_link_state(&pf->vf[i]);
139 }
140
141 /**
142 * i40e_vc_notify_reset
143 * @pf: pointer to the PF structure
144 *
145 * indicate a pending reset to all VFs on a given PF
146 **/
i40e_vc_notify_reset(struct i40e_pf * pf)147 void i40e_vc_notify_reset(struct i40e_pf *pf)
148 {
149 struct virtchnl_pf_event pfe;
150
151 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
152 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
153 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
154 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
155 }
156
157 #ifdef CONFIG_PCI_IOV
i40e_restore_all_vfs_msi_state(struct pci_dev * pdev)158 void i40e_restore_all_vfs_msi_state(struct pci_dev *pdev)
159 {
160 u16 vf_id;
161 u16 pos;
162
163 /* Continue only if this is a PF */
164 if (!pdev->is_physfn)
165 return;
166
167 if (!pci_num_vf(pdev))
168 return;
169
170 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
171 if (pos) {
172 struct pci_dev *vf_dev = NULL;
173
174 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
175 while ((vf_dev = pci_get_device(pdev->vendor, vf_id, vf_dev))) {
176 if (vf_dev->is_virtfn && vf_dev->physfn == pdev)
177 pci_restore_msi_state(vf_dev);
178 }
179 }
180 }
181 #endif /* CONFIG_PCI_IOV */
182
183 /**
184 * i40e_vc_notify_vf_reset
185 * @vf: pointer to the VF structure
186 *
187 * indicate a pending reset to the given VF
188 **/
i40e_vc_notify_vf_reset(struct i40e_vf * vf)189 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
190 {
191 struct virtchnl_pf_event pfe;
192 int abs_vf_id;
193
194 /* validate the request */
195 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
196 return;
197
198 /* verify if the VF is in either init or active before proceeding */
199 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
200 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
201 return;
202
203 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
204
205 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
206 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
207 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
208 0, (u8 *)&pfe,
209 sizeof(struct virtchnl_pf_event), NULL);
210 }
211 /***********************misc routines*****************************/
212
213 /**
214 * i40e_vc_reset_vf
215 * @vf: pointer to the VF info
216 * @notify_vf: notify vf about reset or not
217 * Reset VF handler.
218 **/
i40e_vc_reset_vf(struct i40e_vf * vf,bool notify_vf)219 static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
220 {
221 struct i40e_pf *pf = vf->pf;
222 int i;
223
224 if (notify_vf)
225 i40e_vc_notify_vf_reset(vf);
226
227 /* We want to ensure that an actual reset occurs initiated after this
228 * function was called. However, we do not want to wait forever, so
229 * we'll give a reasonable time and print a message if we failed to
230 * ensure a reset.
231 */
232 for (i = 0; i < 20; i++) {
233 /* If PF is in VFs releasing state reset VF is impossible,
234 * so leave it.
235 */
236 if (test_bit(__I40E_VFS_RELEASING, pf->state))
237 return;
238 if (i40e_reset_vf(vf, false))
239 return;
240 usleep_range(10000, 20000);
241 }
242
243 if (notify_vf)
244 dev_warn(&vf->pf->pdev->dev,
245 "Failed to initiate reset for VF %d after 200 milliseconds\n",
246 vf->vf_id);
247 else
248 dev_dbg(&vf->pf->pdev->dev,
249 "Failed to initiate reset for VF %d after 200 milliseconds\n",
250 vf->vf_id);
251 }
252
253 /**
254 * i40e_vc_isvalid_vsi_id
255 * @vf: pointer to the VF info
256 * @vsi_id: VF relative VSI id
257 *
258 * check for the valid VSI id
259 **/
i40e_vc_isvalid_vsi_id(struct i40e_vf * vf,u16 vsi_id)260 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
261 {
262 struct i40e_pf *pf = vf->pf;
263 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
264
265 return (vsi && (vsi->vf_id == vf->vf_id));
266 }
267
268 /**
269 * i40e_vc_isvalid_queue_id
270 * @vf: pointer to the VF info
271 * @vsi_id: vsi id
272 * @qid: vsi relative queue id
273 *
274 * check for the valid queue id
275 **/
i40e_vc_isvalid_queue_id(struct i40e_vf * vf,u16 vsi_id,u16 qid)276 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
277 u16 qid)
278 {
279 struct i40e_pf *pf = vf->pf;
280 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
281
282 return (vsi && (qid < vsi->alloc_queue_pairs));
283 }
284
285 /**
286 * i40e_vc_isvalid_vector_id
287 * @vf: pointer to the VF info
288 * @vector_id: VF relative vector id
289 *
290 * check for the valid vector id
291 **/
i40e_vc_isvalid_vector_id(struct i40e_vf * vf,u32 vector_id)292 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
293 {
294 struct i40e_pf *pf = vf->pf;
295
296 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
297 }
298
299 /***********************vf resource mgmt routines*****************/
300
301 /**
302 * i40e_vc_get_pf_queue_id
303 * @vf: pointer to the VF info
304 * @vsi_id: id of VSI as provided by the FW
305 * @vsi_queue_id: vsi relative queue id
306 *
307 * return PF relative queue id
308 **/
i40e_vc_get_pf_queue_id(struct i40e_vf * vf,u16 vsi_id,u8 vsi_queue_id)309 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
310 u8 vsi_queue_id)
311 {
312 struct i40e_pf *pf = vf->pf;
313 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
314 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
315
316 if (!vsi)
317 return pf_queue_id;
318
319 if (le16_to_cpu(vsi->info.mapping_flags) &
320 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
321 pf_queue_id =
322 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
323 else
324 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
325 vsi_queue_id;
326
327 return pf_queue_id;
328 }
329
330 /**
331 * i40e_get_real_pf_qid
332 * @vf: pointer to the VF info
333 * @vsi_id: vsi id
334 * @queue_id: queue number
335 *
336 * wrapper function to get pf_queue_id handling ADq code as well
337 **/
i40e_get_real_pf_qid(struct i40e_vf * vf,u16 vsi_id,u16 queue_id)338 static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
339 {
340 int i;
341
342 if (vf->adq_enabled) {
343 /* Although VF considers all the queues(can be 1 to 16) as its
344 * own but they may actually belong to different VSIs(up to 4).
345 * We need to find which queues belongs to which VSI.
346 */
347 for (i = 0; i < vf->num_tc; i++) {
348 if (queue_id < vf->ch[i].num_qps) {
349 vsi_id = vf->ch[i].vsi_id;
350 break;
351 }
352 /* find right queue id which is relative to a
353 * given VSI.
354 */
355 queue_id -= vf->ch[i].num_qps;
356 }
357 }
358
359 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
360 }
361
362 /**
363 * i40e_config_irq_link_list
364 * @vf: pointer to the VF info
365 * @vsi_id: id of VSI as given by the FW
366 * @vecmap: irq map info
367 *
368 * configure irq link list from the map
369 **/
i40e_config_irq_link_list(struct i40e_vf * vf,u16 vsi_id,struct virtchnl_vector_map * vecmap)370 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
371 struct virtchnl_vector_map *vecmap)
372 {
373 unsigned long linklistmap = 0, tempmap;
374 struct i40e_pf *pf = vf->pf;
375 struct i40e_hw *hw = &pf->hw;
376 u16 vsi_queue_id, pf_queue_id;
377 enum i40e_queue_type qtype;
378 u16 next_q, vector_id, size;
379 u32 reg, reg_idx;
380 u16 itr_idx = 0;
381
382 vector_id = vecmap->vector_id;
383 /* setup the head */
384 if (0 == vector_id)
385 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
386 else
387 reg_idx = I40E_VPINT_LNKLSTN(
388 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
389 (vector_id - 1));
390
391 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
392 /* Special case - No queues mapped on this vector */
393 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
394 goto irq_list_done;
395 }
396 tempmap = vecmap->rxq_map;
397 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
398 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
399 vsi_queue_id));
400 }
401
402 tempmap = vecmap->txq_map;
403 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
404 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
405 vsi_queue_id + 1));
406 }
407
408 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
409 next_q = find_first_bit(&linklistmap, size);
410 if (unlikely(next_q == size))
411 goto irq_list_done;
412
413 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
414 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
415 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
416 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
417
418 wr32(hw, reg_idx, reg);
419
420 while (next_q < size) {
421 switch (qtype) {
422 case I40E_QUEUE_TYPE_RX:
423 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
424 itr_idx = vecmap->rxitr_idx;
425 break;
426 case I40E_QUEUE_TYPE_TX:
427 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
428 itr_idx = vecmap->txitr_idx;
429 break;
430 default:
431 break;
432 }
433
434 next_q = find_next_bit(&linklistmap, size, next_q + 1);
435 if (next_q < size) {
436 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
437 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
438 pf_queue_id = i40e_get_real_pf_qid(vf,
439 vsi_id,
440 vsi_queue_id);
441 } else {
442 pf_queue_id = I40E_QUEUE_END_OF_LIST;
443 qtype = 0;
444 }
445
446 /* format for the RQCTL & TQCTL regs is same */
447 reg = (vector_id) |
448 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
449 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
450 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
451 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
452 wr32(hw, reg_idx, reg);
453 }
454
455 /* if the vf is running in polling mode and using interrupt zero,
456 * need to disable auto-mask on enabling zero interrupt for VFs.
457 */
458 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
459 (vector_id == 0)) {
460 reg = rd32(hw, I40E_GLINT_CTL);
461 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
462 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
463 wr32(hw, I40E_GLINT_CTL, reg);
464 }
465 }
466
467 irq_list_done:
468 i40e_flush(hw);
469 }
470
471 /**
472 * i40e_release_rdma_qvlist
473 * @vf: pointer to the VF.
474 *
475 **/
i40e_release_rdma_qvlist(struct i40e_vf * vf)476 static void i40e_release_rdma_qvlist(struct i40e_vf *vf)
477 {
478 struct i40e_pf *pf = vf->pf;
479 struct virtchnl_rdma_qvlist_info *qvlist_info = vf->qvlist_info;
480 u32 msix_vf;
481 u32 i;
482
483 if (!vf->qvlist_info)
484 return;
485
486 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
487 for (i = 0; i < qvlist_info->num_vectors; i++) {
488 struct virtchnl_rdma_qv_info *qv_info;
489 u32 next_q_index, next_q_type;
490 struct i40e_hw *hw = &pf->hw;
491 u32 v_idx, reg_idx, reg;
492
493 qv_info = &qvlist_info->qv_info[i];
494 if (!qv_info)
495 continue;
496 v_idx = qv_info->v_idx;
497 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
498 /* Figure out the queue after CEQ and make that the
499 * first queue.
500 */
501 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
502 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
503 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
504 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
505 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
506 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
507
508 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
509 reg = (next_q_index &
510 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
511 (next_q_type <<
512 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
513
514 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
515 }
516 }
517 kfree(vf->qvlist_info);
518 vf->qvlist_info = NULL;
519 }
520
521 /**
522 * i40e_config_rdma_qvlist
523 * @vf: pointer to the VF info
524 * @qvlist_info: queue and vector list
525 *
526 * Return 0 on success or < 0 on error
527 **/
528 static int
i40e_config_rdma_qvlist(struct i40e_vf * vf,struct virtchnl_rdma_qvlist_info * qvlist_info)529 i40e_config_rdma_qvlist(struct i40e_vf *vf,
530 struct virtchnl_rdma_qvlist_info *qvlist_info)
531 {
532 struct i40e_pf *pf = vf->pf;
533 struct i40e_hw *hw = &pf->hw;
534 struct virtchnl_rdma_qv_info *qv_info;
535 u32 v_idx, i, reg_idx, reg;
536 u32 next_q_idx, next_q_type;
537 size_t size;
538 u32 msix_vf;
539 int ret = 0;
540
541 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
542
543 if (qvlist_info->num_vectors > msix_vf) {
544 dev_warn(&pf->pdev->dev,
545 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
546 qvlist_info->num_vectors,
547 msix_vf);
548 ret = -EINVAL;
549 goto err_out;
550 }
551
552 kfree(vf->qvlist_info);
553 size = virtchnl_struct_size(vf->qvlist_info, qv_info,
554 qvlist_info->num_vectors);
555 vf->qvlist_info = kzalloc(size, GFP_KERNEL);
556 if (!vf->qvlist_info) {
557 ret = -ENOMEM;
558 goto err_out;
559 }
560 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
561
562 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
563 for (i = 0; i < qvlist_info->num_vectors; i++) {
564 qv_info = &qvlist_info->qv_info[i];
565 if (!qv_info)
566 continue;
567
568 /* Validate vector id belongs to this vf */
569 if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) {
570 ret = -EINVAL;
571 goto err_free;
572 }
573
574 v_idx = qv_info->v_idx;
575
576 vf->qvlist_info->qv_info[i] = *qv_info;
577
578 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
579 /* We might be sharing the interrupt, so get the first queue
580 * index and type, push it down the list by adding the new
581 * queue on top. Also link it with the new queue in CEQCTL.
582 */
583 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
584 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
585 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
586 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
587 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
588
589 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
590 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
591 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
592 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
593 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
594 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
595 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
596 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
597
598 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
599 reg = (qv_info->ceq_idx &
600 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
601 (I40E_QUEUE_TYPE_PE_CEQ <<
602 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
603 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
604 }
605
606 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
607 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
608 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
609 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
610
611 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
612 }
613 }
614
615 return 0;
616 err_free:
617 kfree(vf->qvlist_info);
618 vf->qvlist_info = NULL;
619 err_out:
620 return ret;
621 }
622
623 /**
624 * i40e_config_vsi_tx_queue
625 * @vf: pointer to the VF info
626 * @vsi_id: id of VSI as provided by the FW
627 * @vsi_queue_id: vsi relative queue index
628 * @info: config. info
629 *
630 * configure tx queue
631 **/
i40e_config_vsi_tx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_txq_info * info)632 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
633 u16 vsi_queue_id,
634 struct virtchnl_txq_info *info)
635 {
636 struct i40e_pf *pf = vf->pf;
637 struct i40e_hw *hw = &pf->hw;
638 struct i40e_hmc_obj_txq tx_ctx;
639 struct i40e_vsi *vsi;
640 u16 pf_queue_id;
641 u32 qtx_ctl;
642 int ret = 0;
643
644 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
645 ret = -ENOENT;
646 goto error_context;
647 }
648 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
649 vsi = i40e_find_vsi_from_id(pf, vsi_id);
650 if (!vsi) {
651 ret = -ENOENT;
652 goto error_context;
653 }
654
655 /* clear the context structure first */
656 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
657
658 /* only set the required fields */
659 tx_ctx.base = info->dma_ring_addr / 128;
660 tx_ctx.qlen = info->ring_len;
661 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
662 tx_ctx.rdylist_act = 0;
663 tx_ctx.head_wb_ena = info->headwb_enabled;
664 tx_ctx.head_wb_addr = info->dma_headwb_addr;
665
666 /* clear the context in the HMC */
667 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
668 if (ret) {
669 dev_err(&pf->pdev->dev,
670 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
671 pf_queue_id, ret);
672 ret = -ENOENT;
673 goto error_context;
674 }
675
676 /* set the context in the HMC */
677 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
678 if (ret) {
679 dev_err(&pf->pdev->dev,
680 "Failed to set VF LAN Tx queue context %d error: %d\n",
681 pf_queue_id, ret);
682 ret = -ENOENT;
683 goto error_context;
684 }
685
686 /* associate this queue with the PCI VF function */
687 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
688 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
689 & I40E_QTX_CTL_PF_INDX_MASK);
690 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
691 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
692 & I40E_QTX_CTL_VFVM_INDX_MASK);
693 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
694 i40e_flush(hw);
695
696 error_context:
697 return ret;
698 }
699
700 /**
701 * i40e_config_vsi_rx_queue
702 * @vf: pointer to the VF info
703 * @vsi_id: id of VSI as provided by the FW
704 * @vsi_queue_id: vsi relative queue index
705 * @info: config. info
706 *
707 * configure rx queue
708 **/
i40e_config_vsi_rx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_rxq_info * info)709 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
710 u16 vsi_queue_id,
711 struct virtchnl_rxq_info *info)
712 {
713 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
714 struct i40e_pf *pf = vf->pf;
715 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
716 struct i40e_hw *hw = &pf->hw;
717 struct i40e_hmc_obj_rxq rx_ctx;
718 int ret = 0;
719
720 /* clear the context structure first */
721 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
722
723 /* only set the required fields */
724 rx_ctx.base = info->dma_ring_addr / 128;
725 rx_ctx.qlen = info->ring_len;
726
727 if (info->splithdr_enabled) {
728 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
729 I40E_RX_SPLIT_IP |
730 I40E_RX_SPLIT_TCP_UDP |
731 I40E_RX_SPLIT_SCTP;
732 /* header length validation */
733 if (info->hdr_size > ((2 * 1024) - 64)) {
734 ret = -EINVAL;
735 goto error_param;
736 }
737 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
738
739 /* set split mode 10b */
740 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
741 }
742
743 /* databuffer length validation */
744 if (info->databuffer_size > ((16 * 1024) - 128)) {
745 ret = -EINVAL;
746 goto error_param;
747 }
748 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
749
750 /* max pkt. length validation */
751 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
752 ret = -EINVAL;
753 goto error_param;
754 }
755 rx_ctx.rxmax = info->max_pkt_size;
756
757 /* if port VLAN is configured increase the max packet size */
758 if (vsi->info.pvid)
759 rx_ctx.rxmax += VLAN_HLEN;
760
761 /* enable 32bytes desc always */
762 rx_ctx.dsize = 1;
763
764 /* default values */
765 rx_ctx.lrxqthresh = 1;
766 rx_ctx.crcstrip = 1;
767 rx_ctx.prefena = 1;
768 rx_ctx.l2tsel = 1;
769
770 /* clear the context in the HMC */
771 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
772 if (ret) {
773 dev_err(&pf->pdev->dev,
774 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
775 pf_queue_id, ret);
776 ret = -ENOENT;
777 goto error_param;
778 }
779
780 /* set the context in the HMC */
781 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
782 if (ret) {
783 dev_err(&pf->pdev->dev,
784 "Failed to set VF LAN Rx queue context %d error: %d\n",
785 pf_queue_id, ret);
786 ret = -ENOENT;
787 goto error_param;
788 }
789
790 error_param:
791 return ret;
792 }
793
794 /**
795 * i40e_alloc_vsi_res
796 * @vf: pointer to the VF info
797 * @idx: VSI index, applies only for ADq mode, zero otherwise
798 *
799 * alloc VF vsi context & resources
800 **/
i40e_alloc_vsi_res(struct i40e_vf * vf,u8 idx)801 static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
802 {
803 struct i40e_mac_filter *f = NULL;
804 struct i40e_pf *pf = vf->pf;
805 struct i40e_vsi *vsi;
806 u64 max_tx_rate = 0;
807 int ret = 0;
808
809 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid,
810 vf->vf_id);
811
812 if (!vsi) {
813 dev_err(&pf->pdev->dev,
814 "add vsi failed for VF %d, aq_err %d\n",
815 vf->vf_id, pf->hw.aq.asq_last_status);
816 ret = -ENOENT;
817 goto error_alloc_vsi_res;
818 }
819
820 if (!idx) {
821 u64 hena = i40e_pf_get_default_rss_hena(pf);
822 u8 broadcast[ETH_ALEN];
823
824 vf->lan_vsi_idx = vsi->idx;
825 vf->lan_vsi_id = vsi->id;
826 /* If the port VLAN has been configured and then the
827 * VF driver was removed then the VSI port VLAN
828 * configuration was destroyed. Check if there is
829 * a port VLAN and restore the VSI configuration if
830 * needed.
831 */
832 if (vf->port_vlan_id)
833 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
834
835 spin_lock_bh(&vsi->mac_filter_hash_lock);
836 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
837 f = i40e_add_mac_filter(vsi,
838 vf->default_lan_addr.addr);
839 if (!f)
840 dev_info(&pf->pdev->dev,
841 "Could not add MAC filter %pM for VF %d\n",
842 vf->default_lan_addr.addr, vf->vf_id);
843 }
844 eth_broadcast_addr(broadcast);
845 f = i40e_add_mac_filter(vsi, broadcast);
846 if (!f)
847 dev_info(&pf->pdev->dev,
848 "Could not allocate VF broadcast filter\n");
849 spin_unlock_bh(&vsi->mac_filter_hash_lock);
850 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
851 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
852 /* program mac filter only for VF VSI */
853 ret = i40e_sync_vsi_filters(vsi);
854 if (ret)
855 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
856 }
857
858 /* storing VSI index and id for ADq and don't apply the mac filter */
859 if (vf->adq_enabled) {
860 vf->ch[idx].vsi_idx = vsi->idx;
861 vf->ch[idx].vsi_id = vsi->id;
862 }
863
864 /* Set VF bandwidth if specified */
865 if (vf->tx_rate) {
866 max_tx_rate = vf->tx_rate;
867 } else if (vf->ch[idx].max_tx_rate) {
868 max_tx_rate = vf->ch[idx].max_tx_rate;
869 }
870
871 if (max_tx_rate) {
872 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
873 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
874 max_tx_rate, 0, NULL);
875 if (ret)
876 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
877 vf->vf_id, ret);
878 }
879
880 error_alloc_vsi_res:
881 return ret;
882 }
883
884 /**
885 * i40e_map_pf_queues_to_vsi
886 * @vf: pointer to the VF info
887 *
888 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
889 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
890 **/
i40e_map_pf_queues_to_vsi(struct i40e_vf * vf)891 static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
892 {
893 struct i40e_pf *pf = vf->pf;
894 struct i40e_hw *hw = &pf->hw;
895 u32 reg, num_tc = 1; /* VF has at least one traffic class */
896 u16 vsi_id, qps;
897 int i, j;
898
899 if (vf->adq_enabled)
900 num_tc = vf->num_tc;
901
902 for (i = 0; i < num_tc; i++) {
903 if (vf->adq_enabled) {
904 qps = vf->ch[i].num_qps;
905 vsi_id = vf->ch[i].vsi_id;
906 } else {
907 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
908 vsi_id = vf->lan_vsi_id;
909 }
910
911 for (j = 0; j < 7; j++) {
912 if (j * 2 >= qps) {
913 /* end of list */
914 reg = 0x07FF07FF;
915 } else {
916 u16 qid = i40e_vc_get_pf_queue_id(vf,
917 vsi_id,
918 j * 2);
919 reg = qid;
920 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
921 (j * 2) + 1);
922 reg |= qid << 16;
923 }
924 i40e_write_rx_ctl(hw,
925 I40E_VSILAN_QTABLE(j, vsi_id),
926 reg);
927 }
928 }
929 }
930
931 /**
932 * i40e_map_pf_to_vf_queues
933 * @vf: pointer to the VF info
934 *
935 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
936 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
937 **/
i40e_map_pf_to_vf_queues(struct i40e_vf * vf)938 static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
939 {
940 struct i40e_pf *pf = vf->pf;
941 struct i40e_hw *hw = &pf->hw;
942 u32 reg, total_qps = 0;
943 u32 qps, num_tc = 1; /* VF has at least one traffic class */
944 u16 vsi_id, qid;
945 int i, j;
946
947 if (vf->adq_enabled)
948 num_tc = vf->num_tc;
949
950 for (i = 0; i < num_tc; i++) {
951 if (vf->adq_enabled) {
952 qps = vf->ch[i].num_qps;
953 vsi_id = vf->ch[i].vsi_id;
954 } else {
955 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
956 vsi_id = vf->lan_vsi_id;
957 }
958
959 for (j = 0; j < qps; j++) {
960 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
961
962 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
963 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
964 reg);
965 total_qps++;
966 }
967 }
968 }
969
970 /**
971 * i40e_enable_vf_mappings
972 * @vf: pointer to the VF info
973 *
974 * enable VF mappings
975 **/
i40e_enable_vf_mappings(struct i40e_vf * vf)976 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
977 {
978 struct i40e_pf *pf = vf->pf;
979 struct i40e_hw *hw = &pf->hw;
980 u32 reg;
981
982 /* Tell the hardware we're using noncontiguous mapping. HW requires
983 * that VF queues be mapped using this method, even when they are
984 * contiguous in real life
985 */
986 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
987 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
988
989 /* enable VF vplan_qtable mappings */
990 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
991 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
992
993 i40e_map_pf_to_vf_queues(vf);
994 i40e_map_pf_queues_to_vsi(vf);
995
996 i40e_flush(hw);
997 }
998
999 /**
1000 * i40e_disable_vf_mappings
1001 * @vf: pointer to the VF info
1002 *
1003 * disable VF mappings
1004 **/
i40e_disable_vf_mappings(struct i40e_vf * vf)1005 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
1006 {
1007 struct i40e_pf *pf = vf->pf;
1008 struct i40e_hw *hw = &pf->hw;
1009 int i;
1010
1011 /* disable qp mappings */
1012 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
1013 for (i = 0; i < I40E_MAX_VSI_QP; i++)
1014 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
1015 I40E_QUEUE_END_OF_LIST);
1016 i40e_flush(hw);
1017 }
1018
1019 /**
1020 * i40e_free_vf_res
1021 * @vf: pointer to the VF info
1022 *
1023 * free VF resources
1024 **/
i40e_free_vf_res(struct i40e_vf * vf)1025 static void i40e_free_vf_res(struct i40e_vf *vf)
1026 {
1027 struct i40e_pf *pf = vf->pf;
1028 struct i40e_hw *hw = &pf->hw;
1029 u32 reg_idx, reg;
1030 int i, j, msix_vf;
1031
1032 /* Start by disabling VF's configuration API to prevent the OS from
1033 * accessing the VF's VSI after it's freed / invalidated.
1034 */
1035 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1036
1037 /* It's possible the VF had requeuested more queues than the default so
1038 * do the accounting here when we're about to free them.
1039 */
1040 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
1041 pf->queues_left += vf->num_queue_pairs -
1042 I40E_DEFAULT_QUEUES_PER_VF;
1043 }
1044
1045 /* free vsi & disconnect it from the parent uplink */
1046 if (vf->lan_vsi_idx) {
1047 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
1048 vf->lan_vsi_idx = 0;
1049 vf->lan_vsi_id = 0;
1050 }
1051
1052 /* do the accounting and remove additional ADq VSI's */
1053 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
1054 for (j = 0; j < vf->num_tc; j++) {
1055 /* At this point VSI0 is already released so don't
1056 * release it again and only clear their values in
1057 * structure variables
1058 */
1059 if (j)
1060 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
1061 vf->ch[j].vsi_idx = 0;
1062 vf->ch[j].vsi_id = 0;
1063 }
1064 }
1065 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
1066
1067 /* disable interrupts so the VF starts in a known state */
1068 for (i = 0; i < msix_vf; i++) {
1069 /* format is same for both registers */
1070 if (0 == i)
1071 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
1072 else
1073 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
1074 (vf->vf_id))
1075 + (i - 1));
1076 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
1077 i40e_flush(hw);
1078 }
1079
1080 /* clear the irq settings */
1081 for (i = 0; i < msix_vf; i++) {
1082 /* format is same for both registers */
1083 if (0 == i)
1084 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
1085 else
1086 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
1087 (vf->vf_id))
1088 + (i - 1));
1089 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1090 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1091 wr32(hw, reg_idx, reg);
1092 i40e_flush(hw);
1093 }
1094 /* reset some of the state variables keeping track of the resources */
1095 vf->num_queue_pairs = 0;
1096 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1097 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1098 }
1099
1100 /**
1101 * i40e_alloc_vf_res
1102 * @vf: pointer to the VF info
1103 *
1104 * allocate VF resources
1105 **/
i40e_alloc_vf_res(struct i40e_vf * vf)1106 static int i40e_alloc_vf_res(struct i40e_vf *vf)
1107 {
1108 struct i40e_pf *pf = vf->pf;
1109 int total_queue_pairs = 0;
1110 int ret, idx;
1111
1112 if (vf->num_req_queues &&
1113 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1114 pf->num_vf_qps = vf->num_req_queues;
1115 else
1116 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1117
1118 /* allocate hw vsi context & associated resources */
1119 ret = i40e_alloc_vsi_res(vf, 0);
1120 if (ret)
1121 goto error_alloc;
1122 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1123
1124 /* allocate additional VSIs based on tc information for ADq */
1125 if (vf->adq_enabled) {
1126 if (pf->queues_left >=
1127 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1128 /* TC 0 always belongs to VF VSI */
1129 for (idx = 1; idx < vf->num_tc; idx++) {
1130 ret = i40e_alloc_vsi_res(vf, idx);
1131 if (ret)
1132 goto error_alloc;
1133 }
1134 /* send correct number of queues */
1135 total_queue_pairs = I40E_MAX_VF_QUEUES;
1136 } else {
1137 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1138 vf->vf_id);
1139 vf->adq_enabled = false;
1140 }
1141 }
1142
1143 /* We account for each VF to get a default number of queue pairs. If
1144 * the VF has now requested more, we need to account for that to make
1145 * certain we never request more queues than we actually have left in
1146 * HW.
1147 */
1148 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1149 pf->queues_left -=
1150 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1151
1152 if (vf->trusted)
1153 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1154 else
1155 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1156
1157 /* store the total qps number for the runtime
1158 * VF req validation
1159 */
1160 vf->num_queue_pairs = total_queue_pairs;
1161
1162 /* VF is now completely initialized */
1163 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1164
1165 error_alloc:
1166 if (ret)
1167 i40e_free_vf_res(vf);
1168
1169 return ret;
1170 }
1171
1172 #define VF_DEVICE_STATUS 0xAA
1173 #define VF_TRANS_PENDING_MASK 0x20
1174 /**
1175 * i40e_quiesce_vf_pci
1176 * @vf: pointer to the VF structure
1177 *
1178 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1179 * if the transactions never clear.
1180 **/
i40e_quiesce_vf_pci(struct i40e_vf * vf)1181 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1182 {
1183 struct i40e_pf *pf = vf->pf;
1184 struct i40e_hw *hw = &pf->hw;
1185 int vf_abs_id, i;
1186 u32 reg;
1187
1188 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1189
1190 wr32(hw, I40E_PF_PCI_CIAA,
1191 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1192 for (i = 0; i < 100; i++) {
1193 reg = rd32(hw, I40E_PF_PCI_CIAD);
1194 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1195 return 0;
1196 udelay(1);
1197 }
1198 return -EIO;
1199 }
1200
1201 /**
1202 * __i40e_getnum_vf_vsi_vlan_filters
1203 * @vsi: pointer to the vsi
1204 *
1205 * called to get the number of VLANs offloaded on this VF
1206 **/
__i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1207 static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1208 {
1209 struct i40e_mac_filter *f;
1210 u16 num_vlans = 0, bkt;
1211
1212 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1213 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1214 num_vlans++;
1215 }
1216
1217 return num_vlans;
1218 }
1219
1220 /**
1221 * i40e_getnum_vf_vsi_vlan_filters
1222 * @vsi: pointer to the vsi
1223 *
1224 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
1225 **/
i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1226 static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1227 {
1228 int num_vlans;
1229
1230 spin_lock_bh(&vsi->mac_filter_hash_lock);
1231 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1232 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1233
1234 return num_vlans;
1235 }
1236
1237 /**
1238 * i40e_get_vlan_list_sync
1239 * @vsi: pointer to the VSI
1240 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller
1241 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
1242 * This array is allocated here, but has to be freed in caller.
1243 *
1244 * Called to get number of VLANs and VLAN list present in mac_filter_hash.
1245 **/
i40e_get_vlan_list_sync(struct i40e_vsi * vsi,u16 * num_vlans,s16 ** vlan_list)1246 static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
1247 s16 **vlan_list)
1248 {
1249 struct i40e_mac_filter *f;
1250 int i = 0;
1251 int bkt;
1252
1253 spin_lock_bh(&vsi->mac_filter_hash_lock);
1254 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1255 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC);
1256 if (!(*vlan_list))
1257 goto err;
1258
1259 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1260 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1261 continue;
1262 (*vlan_list)[i++] = f->vlan;
1263 }
1264 err:
1265 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1266 }
1267
1268 /**
1269 * i40e_set_vsi_promisc
1270 * @vf: pointer to the VF struct
1271 * @seid: VSI number
1272 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
1273 * for a given VLAN
1274 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
1275 * for a given VLAN
1276 * @vl: List of VLANs - apply filter for given VLANs
1277 * @num_vlans: Number of elements in @vl
1278 **/
1279 static int
i40e_set_vsi_promisc(struct i40e_vf * vf,u16 seid,bool multi_enable,bool unicast_enable,s16 * vl,u16 num_vlans)1280 i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
1281 bool unicast_enable, s16 *vl, u16 num_vlans)
1282 {
1283 struct i40e_pf *pf = vf->pf;
1284 struct i40e_hw *hw = &pf->hw;
1285 int aq_ret, aq_tmp = 0;
1286 int i;
1287
1288 /* No VLAN to set promisc on, set on VSI */
1289 if (!num_vlans || !vl) {
1290 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid,
1291 multi_enable,
1292 NULL);
1293 if (aq_ret) {
1294 int aq_err = pf->hw.aq.asq_last_status;
1295
1296 dev_err(&pf->pdev->dev,
1297 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1298 vf->vf_id,
1299 ERR_PTR(aq_ret),
1300 i40e_aq_str(&pf->hw, aq_err));
1301
1302 return aq_ret;
1303 }
1304
1305 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid,
1306 unicast_enable,
1307 NULL, true);
1308
1309 if (aq_ret) {
1310 int aq_err = pf->hw.aq.asq_last_status;
1311
1312 dev_err(&pf->pdev->dev,
1313 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1314 vf->vf_id,
1315 ERR_PTR(aq_ret),
1316 i40e_aq_str(&pf->hw, aq_err));
1317 }
1318
1319 return aq_ret;
1320 }
1321
1322 for (i = 0; i < num_vlans; i++) {
1323 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
1324 multi_enable,
1325 vl[i], NULL);
1326 if (aq_ret) {
1327 int aq_err = pf->hw.aq.asq_last_status;
1328
1329 dev_err(&pf->pdev->dev,
1330 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n",
1331 vf->vf_id,
1332 ERR_PTR(aq_ret),
1333 i40e_aq_str(&pf->hw, aq_err));
1334
1335 if (!aq_tmp)
1336 aq_tmp = aq_ret;
1337 }
1338
1339 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
1340 unicast_enable,
1341 vl[i], NULL);
1342 if (aq_ret) {
1343 int aq_err = pf->hw.aq.asq_last_status;
1344
1345 dev_err(&pf->pdev->dev,
1346 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n",
1347 vf->vf_id,
1348 ERR_PTR(aq_ret),
1349 i40e_aq_str(&pf->hw, aq_err));
1350
1351 if (!aq_tmp)
1352 aq_tmp = aq_ret;
1353 }
1354 }
1355
1356 if (aq_tmp)
1357 aq_ret = aq_tmp;
1358
1359 return aq_ret;
1360 }
1361
1362 /**
1363 * i40e_config_vf_promiscuous_mode
1364 * @vf: pointer to the VF info
1365 * @vsi_id: VSI id
1366 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1367 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1368 *
1369 * Called from the VF to configure the promiscuous mode of
1370 * VF vsis and from the VF reset path to reset promiscuous mode.
1371 **/
i40e_config_vf_promiscuous_mode(struct i40e_vf * vf,u16 vsi_id,bool allmulti,bool alluni)1372 static int i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1373 u16 vsi_id,
1374 bool allmulti,
1375 bool alluni)
1376 {
1377 struct i40e_pf *pf = vf->pf;
1378 struct i40e_vsi *vsi;
1379 int aq_ret = 0;
1380 u16 num_vlans;
1381 s16 *vl;
1382
1383 vsi = i40e_find_vsi_from_id(pf, vsi_id);
1384 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1385 return -EINVAL;
1386
1387 if (vf->port_vlan_id) {
1388 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti,
1389 alluni, &vf->port_vlan_id, 1);
1390 return aq_ret;
1391 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1392 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl);
1393
1394 if (!vl)
1395 return -ENOMEM;
1396
1397 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1398 vl, num_vlans);
1399 kfree(vl);
1400 return aq_ret;
1401 }
1402
1403 /* no VLANs to set on, set on VSI */
1404 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1405 NULL, 0);
1406 return aq_ret;
1407 }
1408
1409 /**
1410 * i40e_sync_vfr_reset
1411 * @hw: pointer to hw struct
1412 * @vf_id: VF identifier
1413 *
1414 * Before trigger hardware reset, we need to know if no other process has
1415 * reserved the hardware for any reset operations. This check is done by
1416 * examining the status of the RSTAT1 register used to signal the reset.
1417 **/
i40e_sync_vfr_reset(struct i40e_hw * hw,int vf_id)1418 static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1419 {
1420 u32 reg;
1421 int i;
1422
1423 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1424 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1425 I40E_VFINT_ICR0_ADMINQ_MASK;
1426 if (reg)
1427 return 0;
1428
1429 usleep_range(100, 200);
1430 }
1431
1432 return -EAGAIN;
1433 }
1434
1435 /**
1436 * i40e_trigger_vf_reset
1437 * @vf: pointer to the VF structure
1438 * @flr: VFLR was issued or not
1439 *
1440 * Trigger hardware to start a reset for a particular VF. Expects the caller
1441 * to wait the proper amount of time to allow hardware to reset the VF before
1442 * it cleans up and restores VF functionality.
1443 **/
i40e_trigger_vf_reset(struct i40e_vf * vf,bool flr)1444 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1445 {
1446 struct i40e_pf *pf = vf->pf;
1447 struct i40e_hw *hw = &pf->hw;
1448 u32 reg, reg_idx, bit_idx;
1449 bool vf_active;
1450 u32 radq;
1451
1452 /* warn the VF */
1453 vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1454
1455 /* Disable VF's configuration API during reset. The flag is re-enabled
1456 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1457 * It's normally disabled in i40e_free_vf_res(), but it's safer
1458 * to do it earlier to give some time to finish to any VF config
1459 * functions that may still be running at this point.
1460 */
1461 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1462
1463 /* In the case of a VFLR, the HW has already reset the VF and we
1464 * just need to clean up, so don't hit the VFRTRIG register.
1465 */
1466 if (!flr) {
1467 /* Sync VFR reset before trigger next one */
1468 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1469 I40E_VFINT_ICR0_ADMINQ_MASK;
1470 if (vf_active && !radq)
1471 /* waiting for finish reset by virtual driver */
1472 if (i40e_sync_vfr_reset(hw, vf->vf_id))
1473 dev_info(&pf->pdev->dev,
1474 "Reset VF %d never finished\n",
1475 vf->vf_id);
1476
1477 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1478 * in progress state in rstat1 register.
1479 */
1480 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1481 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1482 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1483 i40e_flush(hw);
1484 }
1485 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1486 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1487 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1488 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1489 i40e_flush(hw);
1490
1491 if (i40e_quiesce_vf_pci(vf))
1492 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1493 vf->vf_id);
1494 }
1495
1496 /**
1497 * i40e_cleanup_reset_vf
1498 * @vf: pointer to the VF structure
1499 *
1500 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1501 * have verified whether the reset is finished properly, and ensure the
1502 * minimum amount of wait time has passed.
1503 **/
i40e_cleanup_reset_vf(struct i40e_vf * vf)1504 static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1505 {
1506 struct i40e_pf *pf = vf->pf;
1507 struct i40e_hw *hw = &pf->hw;
1508 u32 reg;
1509
1510 /* disable promisc modes in case they were enabled */
1511 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1512
1513 /* free VF resources to begin resetting the VSI state */
1514 i40e_free_vf_res(vf);
1515
1516 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1517 * By doing this we allow HW to access VF memory at any point. If we
1518 * did it any sooner, HW could access memory while it was being freed
1519 * in i40e_free_vf_res(), causing an IOMMU fault.
1520 *
1521 * On the other hand, this needs to be done ASAP, because the VF driver
1522 * is waiting for this to happen and may report a timeout. It's
1523 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1524 * it.
1525 */
1526 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1527 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1528 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1529
1530 /* reallocate VF resources to finish resetting the VSI state */
1531 if (!i40e_alloc_vf_res(vf)) {
1532 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1533 i40e_enable_vf_mappings(vf);
1534 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1535 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1536 /* Do not notify the client during VF init */
1537 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1538 &vf->vf_states))
1539 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1540 vf->num_vlan = 0;
1541 }
1542
1543 /* Tell the VF driver the reset is done. This needs to be done only
1544 * after VF has been fully initialized, because the VF driver may
1545 * request resources immediately after setting this flag.
1546 */
1547 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1548 }
1549
1550 /**
1551 * i40e_reset_vf
1552 * @vf: pointer to the VF structure
1553 * @flr: VFLR was issued or not
1554 *
1555 * Returns true if the VF is in reset, resets successfully, or resets
1556 * are disabled and false otherwise.
1557 **/
i40e_reset_vf(struct i40e_vf * vf,bool flr)1558 bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1559 {
1560 struct i40e_pf *pf = vf->pf;
1561 struct i40e_hw *hw = &pf->hw;
1562 bool rsd = false;
1563 u32 reg;
1564 int i;
1565
1566 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1567 return true;
1568
1569 /* Bail out if VFs are disabled. */
1570 if (test_bit(__I40E_VF_DISABLE, pf->state))
1571 return true;
1572
1573 /* If VF is being reset already we don't need to continue. */
1574 if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1575 return true;
1576
1577 i40e_trigger_vf_reset(vf, flr);
1578
1579 /* poll VPGEN_VFRSTAT reg to make sure
1580 * that reset is complete
1581 */
1582 for (i = 0; i < 10; i++) {
1583 /* VF reset requires driver to first reset the VF and then
1584 * poll the status register to make sure that the reset
1585 * completed successfully. Due to internal HW FIFO flushes,
1586 * we must wait 10ms before the register will be valid.
1587 */
1588 usleep_range(10000, 20000);
1589 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1590 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1591 rsd = true;
1592 break;
1593 }
1594 }
1595
1596 if (flr)
1597 usleep_range(10000, 20000);
1598
1599 if (!rsd)
1600 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1601 vf->vf_id);
1602 usleep_range(10000, 20000);
1603
1604 /* On initial reset, we don't have any queues to disable */
1605 if (vf->lan_vsi_idx != 0)
1606 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1607
1608 i40e_cleanup_reset_vf(vf);
1609
1610 i40e_flush(hw);
1611 usleep_range(20000, 40000);
1612 clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states);
1613
1614 return true;
1615 }
1616
1617 /**
1618 * i40e_reset_all_vfs
1619 * @pf: pointer to the PF structure
1620 * @flr: VFLR was issued or not
1621 *
1622 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1623 * VF, then do all the waiting in one chunk, and finally finish restoring each
1624 * VF after the wait. This is useful during PF routines which need to reset
1625 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1626 *
1627 * Returns true if any VFs were reset, and false otherwise.
1628 **/
i40e_reset_all_vfs(struct i40e_pf * pf,bool flr)1629 bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1630 {
1631 struct i40e_hw *hw = &pf->hw;
1632 struct i40e_vf *vf;
1633 u32 reg;
1634 int i;
1635
1636 /* If we don't have any VFs, then there is nothing to reset */
1637 if (!pf->num_alloc_vfs)
1638 return false;
1639
1640 /* If VFs have been disabled, there is no need to reset */
1641 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1642 return false;
1643
1644 /* Begin reset on all VFs at once */
1645 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1646 /* If VF is being reset no need to trigger reset again */
1647 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1648 i40e_trigger_vf_reset(vf, flr);
1649 }
1650
1651 /* HW requires some time to make sure it can flush the FIFO for a VF
1652 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1653 * sequence to make sure that it has completed. We'll keep track of
1654 * the VFs using a simple iterator that increments once that VF has
1655 * finished resetting.
1656 */
1657 for (i = 0, vf = &pf->vf[0]; i < 10 && vf < &pf->vf[pf->num_alloc_vfs]; ++i) {
1658 usleep_range(10000, 20000);
1659
1660 /* Check each VF in sequence, beginning with the VF to fail
1661 * the previous check.
1662 */
1663 while (vf < &pf->vf[pf->num_alloc_vfs]) {
1664 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
1665 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1666 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1667 break;
1668 }
1669
1670 /* If the current VF has finished resetting, move on
1671 * to the next VF in sequence.
1672 */
1673 ++vf;
1674 }
1675 }
1676
1677 if (flr)
1678 usleep_range(10000, 20000);
1679
1680 /* Display a warning if at least one VF didn't manage to reset in
1681 * time, but continue on with the operation.
1682 */
1683 if (vf < &pf->vf[pf->num_alloc_vfs])
1684 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1685 vf->vf_id);
1686 usleep_range(10000, 20000);
1687
1688 /* Begin disabling all the rings associated with VFs, but do not wait
1689 * between each VF.
1690 */
1691 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1692 /* On initial reset, we don't have any queues to disable */
1693 if (vf->lan_vsi_idx == 0)
1694 continue;
1695
1696 /* If VF is reset in another thread just continue */
1697 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1698 continue;
1699
1700 i40e_vsi_stop_rings_no_wait(pf->vsi[vf->lan_vsi_idx]);
1701 }
1702
1703 /* Now that we've notified HW to disable all of the VF rings, wait
1704 * until they finish.
1705 */
1706 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1707 /* On initial reset, we don't have any queues to disable */
1708 if (vf->lan_vsi_idx == 0)
1709 continue;
1710
1711 /* If VF is reset in another thread just continue */
1712 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1713 continue;
1714
1715 i40e_vsi_wait_queues_disabled(pf->vsi[vf->lan_vsi_idx]);
1716 }
1717
1718 /* Hw may need up to 50ms to finish disabling the RX queues. We
1719 * minimize the wait by delaying only once for all VFs.
1720 */
1721 mdelay(50);
1722
1723 /* Finish the reset on each VF */
1724 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) {
1725 /* If VF is reset in another thread just continue */
1726 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1727 continue;
1728
1729 i40e_cleanup_reset_vf(vf);
1730 }
1731
1732 i40e_flush(hw);
1733 usleep_range(20000, 40000);
1734 clear_bit(__I40E_VF_DISABLE, pf->state);
1735
1736 return true;
1737 }
1738
1739 /**
1740 * i40e_free_vfs
1741 * @pf: pointer to the PF structure
1742 *
1743 * free VF resources
1744 **/
i40e_free_vfs(struct i40e_pf * pf)1745 void i40e_free_vfs(struct i40e_pf *pf)
1746 {
1747 struct i40e_hw *hw = &pf->hw;
1748 u32 reg_idx, bit_idx;
1749 int i, tmp, vf_id;
1750
1751 if (!pf->vf)
1752 return;
1753
1754 set_bit(__I40E_VFS_RELEASING, pf->state);
1755 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1756 usleep_range(1000, 2000);
1757
1758 i40e_notify_client_of_vf_enable(pf, 0);
1759
1760 /* Disable IOV before freeing resources. This lets any VF drivers
1761 * running in the host get themselves cleaned up before we yank
1762 * the carpet out from underneath their feet.
1763 */
1764 if (!pci_vfs_assigned(pf->pdev))
1765 pci_disable_sriov(pf->pdev);
1766 else
1767 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1768
1769 /* Amortize wait time by stopping all VFs at the same time */
1770 for (i = 0; i < pf->num_alloc_vfs; i++) {
1771 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1772 continue;
1773
1774 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1775 }
1776
1777 for (i = 0; i < pf->num_alloc_vfs; i++) {
1778 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1779 continue;
1780
1781 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1782 }
1783
1784 /* free up VF resources */
1785 tmp = pf->num_alloc_vfs;
1786 pf->num_alloc_vfs = 0;
1787 for (i = 0; i < tmp; i++) {
1788 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1789 i40e_free_vf_res(&pf->vf[i]);
1790 /* disable qp mappings */
1791 i40e_disable_vf_mappings(&pf->vf[i]);
1792 }
1793
1794 kfree(pf->vf);
1795 pf->vf = NULL;
1796
1797 /* This check is for when the driver is unloaded while VFs are
1798 * assigned. Setting the number of VFs to 0 through sysfs is caught
1799 * before this function ever gets called.
1800 */
1801 if (!pci_vfs_assigned(pf->pdev)) {
1802 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1803 * work correctly when SR-IOV gets re-enabled.
1804 */
1805 for (vf_id = 0; vf_id < tmp; vf_id++) {
1806 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1807 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1808 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1809 }
1810 }
1811 clear_bit(__I40E_VF_DISABLE, pf->state);
1812 clear_bit(__I40E_VFS_RELEASING, pf->state);
1813 }
1814
1815 #ifdef CONFIG_PCI_IOV
1816 /**
1817 * i40e_alloc_vfs
1818 * @pf: pointer to the PF structure
1819 * @num_alloc_vfs: number of VFs to allocate
1820 *
1821 * allocate VF resources
1822 **/
i40e_alloc_vfs(struct i40e_pf * pf,u16 num_alloc_vfs)1823 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1824 {
1825 struct i40e_vf *vfs;
1826 int i, ret = 0;
1827
1828 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1829 i40e_irq_dynamic_disable_icr0(pf);
1830
1831 /* Check to see if we're just allocating resources for extant VFs */
1832 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1833 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1834 if (ret) {
1835 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1836 pf->num_alloc_vfs = 0;
1837 goto err_iov;
1838 }
1839 }
1840 /* allocate memory */
1841 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1842 if (!vfs) {
1843 ret = -ENOMEM;
1844 goto err_alloc;
1845 }
1846 pf->vf = vfs;
1847
1848 /* apply default profile */
1849 for (i = 0; i < num_alloc_vfs; i++) {
1850 vfs[i].pf = pf;
1851 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1852 vfs[i].vf_id = i;
1853
1854 /* assign default capabilities */
1855 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1856 vfs[i].spoofchk = true;
1857
1858 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1859
1860 }
1861 pf->num_alloc_vfs = num_alloc_vfs;
1862
1863 /* VF resources get allocated during reset */
1864 i40e_reset_all_vfs(pf, false);
1865
1866 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1867
1868 err_alloc:
1869 if (ret)
1870 i40e_free_vfs(pf);
1871 err_iov:
1872 /* Re-enable interrupt 0. */
1873 i40e_irq_dynamic_enable_icr0(pf);
1874 return ret;
1875 }
1876
1877 #endif
1878 /**
1879 * i40e_pci_sriov_enable
1880 * @pdev: pointer to a pci_dev structure
1881 * @num_vfs: number of VFs to allocate
1882 *
1883 * Enable or change the number of VFs
1884 **/
i40e_pci_sriov_enable(struct pci_dev * pdev,int num_vfs)1885 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1886 {
1887 #ifdef CONFIG_PCI_IOV
1888 struct i40e_pf *pf = pci_get_drvdata(pdev);
1889 int pre_existing_vfs = pci_num_vf(pdev);
1890 int err = 0;
1891
1892 if (test_bit(__I40E_TESTING, pf->state)) {
1893 dev_warn(&pdev->dev,
1894 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1895 err = -EPERM;
1896 goto err_out;
1897 }
1898
1899 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1900 i40e_free_vfs(pf);
1901 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1902 goto out;
1903
1904 if (num_vfs > pf->num_req_vfs) {
1905 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1906 num_vfs, pf->num_req_vfs);
1907 err = -EPERM;
1908 goto err_out;
1909 }
1910
1911 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1912 err = i40e_alloc_vfs(pf, num_vfs);
1913 if (err) {
1914 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1915 goto err_out;
1916 }
1917
1918 out:
1919 return num_vfs;
1920
1921 err_out:
1922 return err;
1923 #endif
1924 return 0;
1925 }
1926
1927 /**
1928 * i40e_pci_sriov_configure
1929 * @pdev: pointer to a pci_dev structure
1930 * @num_vfs: number of VFs to allocate
1931 *
1932 * Enable or change the number of VFs. Called when the user updates the number
1933 * of VFs in sysfs.
1934 **/
i40e_pci_sriov_configure(struct pci_dev * pdev,int num_vfs)1935 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1936 {
1937 struct i40e_pf *pf = pci_get_drvdata(pdev);
1938 int ret = 0;
1939
1940 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1941 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1942 return -EAGAIN;
1943 }
1944
1945 if (num_vfs) {
1946 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1947 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1948 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1949 }
1950 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1951 goto sriov_configure_out;
1952 }
1953
1954 if (!pci_vfs_assigned(pf->pdev)) {
1955 i40e_free_vfs(pf);
1956 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1957 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1958 } else {
1959 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1960 ret = -EINVAL;
1961 goto sriov_configure_out;
1962 }
1963 sriov_configure_out:
1964 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1965 return ret;
1966 }
1967
1968 /***********************virtual channel routines******************/
1969
1970 /**
1971 * i40e_vc_send_msg_to_vf
1972 * @vf: pointer to the VF info
1973 * @v_opcode: virtual channel opcode
1974 * @v_retval: virtual channel return value
1975 * @msg: pointer to the msg buffer
1976 * @msglen: msg length
1977 *
1978 * send msg to VF
1979 **/
i40e_vc_send_msg_to_vf(struct i40e_vf * vf,u32 v_opcode,u32 v_retval,u8 * msg,u16 msglen)1980 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1981 u32 v_retval, u8 *msg, u16 msglen)
1982 {
1983 struct i40e_pf *pf;
1984 struct i40e_hw *hw;
1985 int abs_vf_id;
1986 int aq_ret;
1987
1988 /* validate the request */
1989 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1990 return -EINVAL;
1991
1992 pf = vf->pf;
1993 hw = &pf->hw;
1994 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1995
1996 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1997 msg, msglen, NULL);
1998 if (aq_ret) {
1999 dev_info(&pf->pdev->dev,
2000 "Unable to send the message to VF %d aq_err %d\n",
2001 vf->vf_id, pf->hw.aq.asq_last_status);
2002 return -EIO;
2003 }
2004
2005 return 0;
2006 }
2007
2008 /**
2009 * i40e_vc_send_resp_to_vf
2010 * @vf: pointer to the VF info
2011 * @opcode: operation code
2012 * @retval: return value
2013 *
2014 * send resp msg to VF
2015 **/
i40e_vc_send_resp_to_vf(struct i40e_vf * vf,enum virtchnl_ops opcode,int retval)2016 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
2017 enum virtchnl_ops opcode,
2018 int retval)
2019 {
2020 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
2021 }
2022
2023 /**
2024 * i40e_sync_vf_state
2025 * @vf: pointer to the VF info
2026 * @state: VF state
2027 *
2028 * Called from a VF message to synchronize the service with a potential
2029 * VF reset state
2030 **/
i40e_sync_vf_state(struct i40e_vf * vf,enum i40e_vf_states state)2031 static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
2032 {
2033 int i;
2034
2035 /* When handling some messages, it needs VF state to be set.
2036 * It is possible that this flag is cleared during VF reset,
2037 * so there is a need to wait until the end of the reset to
2038 * handle the request message correctly.
2039 */
2040 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
2041 if (test_bit(state, &vf->vf_states))
2042 return true;
2043 usleep_range(10000, 20000);
2044 }
2045
2046 return test_bit(state, &vf->vf_states);
2047 }
2048
2049 /**
2050 * i40e_vc_get_version_msg
2051 * @vf: pointer to the VF info
2052 * @msg: pointer to the msg buffer
2053 *
2054 * called from the VF to request the API version used by the PF
2055 **/
i40e_vc_get_version_msg(struct i40e_vf * vf,u8 * msg)2056 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
2057 {
2058 struct virtchnl_version_info info = {
2059 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
2060 };
2061
2062 vf->vf_ver = *(struct virtchnl_version_info *)msg;
2063 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
2064 if (VF_IS_V10(&vf->vf_ver))
2065 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
2066 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
2067 0, (u8 *)&info,
2068 sizeof(struct virtchnl_version_info));
2069 }
2070
2071 /**
2072 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
2073 * @vf: pointer to VF structure
2074 **/
i40e_del_qch(struct i40e_vf * vf)2075 static void i40e_del_qch(struct i40e_vf *vf)
2076 {
2077 struct i40e_pf *pf = vf->pf;
2078 int i;
2079
2080 /* first element in the array belongs to primary VF VSI and we shouldn't
2081 * delete it. We should however delete the rest of the VSIs created
2082 */
2083 for (i = 1; i < vf->num_tc; i++) {
2084 if (vf->ch[i].vsi_idx) {
2085 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
2086 vf->ch[i].vsi_idx = 0;
2087 vf->ch[i].vsi_id = 0;
2088 }
2089 }
2090 }
2091
2092 /**
2093 * i40e_vc_get_max_frame_size
2094 * @vf: pointer to the VF
2095 *
2096 * Max frame size is determined based on the current port's max frame size and
2097 * whether a port VLAN is configured on this VF. The VF is not aware whether
2098 * it's in a port VLAN so the PF needs to account for this in max frame size
2099 * checks and sending the max frame size to the VF.
2100 **/
i40e_vc_get_max_frame_size(struct i40e_vf * vf)2101 static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2102 {
2103 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2104
2105 if (vf->port_vlan_id)
2106 max_frame_size -= VLAN_HLEN;
2107
2108 return max_frame_size;
2109 }
2110
2111 /**
2112 * i40e_vc_get_vf_resources_msg
2113 * @vf: pointer to the VF info
2114 * @msg: pointer to the msg buffer
2115 *
2116 * called from the VF to request its resources
2117 **/
i40e_vc_get_vf_resources_msg(struct i40e_vf * vf,u8 * msg)2118 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2119 {
2120 struct virtchnl_vf_resource *vfres = NULL;
2121 struct i40e_pf *pf = vf->pf;
2122 struct i40e_vsi *vsi;
2123 int num_vsis = 1;
2124 int aq_ret = 0;
2125 size_t len = 0;
2126 int ret;
2127
2128 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
2129 aq_ret = -EINVAL;
2130 goto err;
2131 }
2132
2133 len = virtchnl_struct_size(vfres, vsi_res, num_vsis);
2134 vfres = kzalloc(len, GFP_KERNEL);
2135 if (!vfres) {
2136 aq_ret = -ENOMEM;
2137 len = 0;
2138 goto err;
2139 }
2140 if (VF_IS_V11(&vf->vf_ver))
2141 vf->driver_caps = *(u32 *)msg;
2142 else
2143 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2144 VIRTCHNL_VF_OFFLOAD_RSS_REG |
2145 VIRTCHNL_VF_OFFLOAD_VLAN;
2146
2147 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2148 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
2149 vsi = pf->vsi[vf->lan_vsi_idx];
2150 if (!vsi->info.pvid)
2151 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2152
2153 if (i40e_vf_client_capable(pf, vf->vf_id) &&
2154 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RDMA)) {
2155 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RDMA;
2156 set_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states);
2157 } else {
2158 clear_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states);
2159 }
2160
2161 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2162 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2163 } else {
2164 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
2165 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2166 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2167 else
2168 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2169 }
2170
2171 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
2172 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2173 vfres->vf_cap_flags |=
2174 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2175 }
2176
2177 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2178 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2179
2180 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
2181 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2182 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2183
2184 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2185 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
2186 dev_err(&pf->pdev->dev,
2187 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2188 vf->vf_id);
2189 aq_ret = -EINVAL;
2190 goto err;
2191 }
2192 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2193 }
2194
2195 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
2196 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2197 vfres->vf_cap_flags |=
2198 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2199 }
2200
2201 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2202 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2203
2204 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2205 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2206
2207 vfres->num_vsis = num_vsis;
2208 vfres->num_queue_pairs = vf->num_queue_pairs;
2209 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2210 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2211 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2212 vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2213
2214 if (vf->lan_vsi_idx) {
2215 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2216 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2217 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2218 /* VFs only use TC 0 */
2219 vfres->vsi_res[0].qset_handle
2220 = le16_to_cpu(vsi->info.qs_handle[0]);
2221 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) {
2222 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
2223 eth_zero_addr(vf->default_lan_addr.addr);
2224 }
2225 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2226 vf->default_lan_addr.addr);
2227 }
2228 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2229
2230 err:
2231 /* send the response back to the VF */
2232 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2233 aq_ret, (u8 *)vfres, len);
2234
2235 kfree(vfres);
2236 return ret;
2237 }
2238
2239 /**
2240 * i40e_vc_config_promiscuous_mode_msg
2241 * @vf: pointer to the VF info
2242 * @msg: pointer to the msg buffer
2243 *
2244 * called from the VF to configure the promiscuous mode of
2245 * VF vsis
2246 **/
i40e_vc_config_promiscuous_mode_msg(struct i40e_vf * vf,u8 * msg)2247 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2248 {
2249 struct virtchnl_promisc_info *info =
2250 (struct virtchnl_promisc_info *)msg;
2251 struct i40e_pf *pf = vf->pf;
2252 bool allmulti = false;
2253 bool alluni = false;
2254 int aq_ret = 0;
2255
2256 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2257 aq_ret = -EINVAL;
2258 goto err_out;
2259 }
2260 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2261 dev_err(&pf->pdev->dev,
2262 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2263 vf->vf_id);
2264
2265 /* Lie to the VF on purpose, because this is an error we can
2266 * ignore. Unprivileged VF is not a virtual channel error.
2267 */
2268 aq_ret = 0;
2269 goto err_out;
2270 }
2271
2272 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2273 aq_ret = -EINVAL;
2274 goto err_out;
2275 }
2276
2277 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2278 aq_ret = -EINVAL;
2279 goto err_out;
2280 }
2281
2282 /* Multicast promiscuous handling*/
2283 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2284 allmulti = true;
2285
2286 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2287 alluni = true;
2288 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2289 alluni);
2290 if (aq_ret)
2291 goto err_out;
2292
2293 if (allmulti) {
2294 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2295 &vf->vf_states))
2296 dev_info(&pf->pdev->dev,
2297 "VF %d successfully set multicast promiscuous mode\n",
2298 vf->vf_id);
2299 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2300 &vf->vf_states))
2301 dev_info(&pf->pdev->dev,
2302 "VF %d successfully unset multicast promiscuous mode\n",
2303 vf->vf_id);
2304
2305 if (alluni) {
2306 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2307 &vf->vf_states))
2308 dev_info(&pf->pdev->dev,
2309 "VF %d successfully set unicast promiscuous mode\n",
2310 vf->vf_id);
2311 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2312 &vf->vf_states))
2313 dev_info(&pf->pdev->dev,
2314 "VF %d successfully unset unicast promiscuous mode\n",
2315 vf->vf_id);
2316
2317 err_out:
2318 /* send the response to the VF */
2319 return i40e_vc_send_resp_to_vf(vf,
2320 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2321 aq_ret);
2322 }
2323
2324 /**
2325 * i40e_vc_config_queues_msg
2326 * @vf: pointer to the VF info
2327 * @msg: pointer to the msg buffer
2328 *
2329 * called from the VF to configure the rx/tx
2330 * queues
2331 **/
i40e_vc_config_queues_msg(struct i40e_vf * vf,u8 * msg)2332 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2333 {
2334 struct virtchnl_vsi_queue_config_info *qci =
2335 (struct virtchnl_vsi_queue_config_info *)msg;
2336 struct virtchnl_queue_pair_info *qpi;
2337 u16 vsi_id, vsi_queue_id = 0;
2338 struct i40e_pf *pf = vf->pf;
2339 int i, j = 0, idx = 0;
2340 struct i40e_vsi *vsi;
2341 u16 num_qps_all = 0;
2342 int aq_ret = 0;
2343
2344 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2345 aq_ret = -EINVAL;
2346 goto error_param;
2347 }
2348
2349 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2350 aq_ret = -EINVAL;
2351 goto error_param;
2352 }
2353
2354 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2355 aq_ret = -EINVAL;
2356 goto error_param;
2357 }
2358
2359 if (vf->adq_enabled) {
2360 for (i = 0; i < vf->num_tc; i++)
2361 num_qps_all += vf->ch[i].num_qps;
2362 if (num_qps_all != qci->num_queue_pairs) {
2363 aq_ret = -EINVAL;
2364 goto error_param;
2365 }
2366 }
2367
2368 vsi_id = qci->vsi_id;
2369
2370 for (i = 0; i < qci->num_queue_pairs; i++) {
2371 qpi = &qci->qpair[i];
2372
2373 if (!vf->adq_enabled) {
2374 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2375 qpi->txq.queue_id)) {
2376 aq_ret = -EINVAL;
2377 goto error_param;
2378 }
2379
2380 vsi_queue_id = qpi->txq.queue_id;
2381
2382 if (qpi->txq.vsi_id != qci->vsi_id ||
2383 qpi->rxq.vsi_id != qci->vsi_id ||
2384 qpi->rxq.queue_id != vsi_queue_id) {
2385 aq_ret = -EINVAL;
2386 goto error_param;
2387 }
2388 }
2389
2390 if (vf->adq_enabled) {
2391 if (idx >= ARRAY_SIZE(vf->ch)) {
2392 aq_ret = -ENODEV;
2393 goto error_param;
2394 }
2395 vsi_id = vf->ch[idx].vsi_id;
2396 }
2397
2398 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2399 &qpi->rxq) ||
2400 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2401 &qpi->txq)) {
2402 aq_ret = -EINVAL;
2403 goto error_param;
2404 }
2405
2406 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2407 * VF does not know about these additional VSIs and all
2408 * it cares is about its own queues. PF configures these queues
2409 * to its appropriate VSIs based on TC mapping
2410 */
2411 if (vf->adq_enabled) {
2412 if (idx >= ARRAY_SIZE(vf->ch)) {
2413 aq_ret = -ENODEV;
2414 goto error_param;
2415 }
2416 if (j == (vf->ch[idx].num_qps - 1)) {
2417 idx++;
2418 j = 0; /* resetting the queue count */
2419 vsi_queue_id = 0;
2420 } else {
2421 j++;
2422 vsi_queue_id++;
2423 }
2424 }
2425 }
2426 /* set vsi num_queue_pairs in use to num configured by VF */
2427 if (!vf->adq_enabled) {
2428 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2429 qci->num_queue_pairs;
2430 } else {
2431 for (i = 0; i < vf->num_tc; i++) {
2432 vsi = pf->vsi[vf->ch[i].vsi_idx];
2433 vsi->num_queue_pairs = vf->ch[i].num_qps;
2434
2435 if (i40e_update_adq_vsi_queues(vsi, i)) {
2436 aq_ret = -EIO;
2437 goto error_param;
2438 }
2439 }
2440 }
2441
2442 error_param:
2443 /* send the response to the VF */
2444 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2445 aq_ret);
2446 }
2447
2448 /**
2449 * i40e_validate_queue_map - check queue map is valid
2450 * @vf: the VF structure pointer
2451 * @vsi_id: vsi id
2452 * @queuemap: Tx or Rx queue map
2453 *
2454 * check if Tx or Rx queue map is valid
2455 **/
i40e_validate_queue_map(struct i40e_vf * vf,u16 vsi_id,unsigned long queuemap)2456 static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2457 unsigned long queuemap)
2458 {
2459 u16 vsi_queue_id, queue_id;
2460
2461 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2462 if (vf->adq_enabled) {
2463 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2464 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2465 } else {
2466 queue_id = vsi_queue_id;
2467 }
2468
2469 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2470 return -EINVAL;
2471 }
2472
2473 return 0;
2474 }
2475
2476 /**
2477 * i40e_vc_config_irq_map_msg
2478 * @vf: pointer to the VF info
2479 * @msg: pointer to the msg buffer
2480 *
2481 * called from the VF to configure the irq to
2482 * queue map
2483 **/
i40e_vc_config_irq_map_msg(struct i40e_vf * vf,u8 * msg)2484 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2485 {
2486 struct virtchnl_irq_map_info *irqmap_info =
2487 (struct virtchnl_irq_map_info *)msg;
2488 struct virtchnl_vector_map *map;
2489 int aq_ret = 0;
2490 u16 vsi_id;
2491 int i;
2492
2493 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2494 aq_ret = -EINVAL;
2495 goto error_param;
2496 }
2497
2498 if (irqmap_info->num_vectors >
2499 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2500 aq_ret = -EINVAL;
2501 goto error_param;
2502 }
2503
2504 for (i = 0; i < irqmap_info->num_vectors; i++) {
2505 map = &irqmap_info->vecmap[i];
2506 /* validate msg params */
2507 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2508 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2509 aq_ret = -EINVAL;
2510 goto error_param;
2511 }
2512 vsi_id = map->vsi_id;
2513
2514 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2515 aq_ret = -EINVAL;
2516 goto error_param;
2517 }
2518
2519 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2520 aq_ret = -EINVAL;
2521 goto error_param;
2522 }
2523
2524 i40e_config_irq_link_list(vf, vsi_id, map);
2525 }
2526 error_param:
2527 /* send the response to the VF */
2528 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2529 aq_ret);
2530 }
2531
2532 /**
2533 * i40e_ctrl_vf_tx_rings
2534 * @vsi: the SRIOV VSI being configured
2535 * @q_map: bit map of the queues to be enabled
2536 * @enable: start or stop the queue
2537 **/
i40e_ctrl_vf_tx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2538 static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2539 bool enable)
2540 {
2541 struct i40e_pf *pf = vsi->back;
2542 int ret = 0;
2543 u16 q_id;
2544
2545 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2546 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2547 vsi->base_queue + q_id,
2548 false /*is xdp*/, enable);
2549 if (ret)
2550 break;
2551 }
2552 return ret;
2553 }
2554
2555 /**
2556 * i40e_ctrl_vf_rx_rings
2557 * @vsi: the SRIOV VSI being configured
2558 * @q_map: bit map of the queues to be enabled
2559 * @enable: start or stop the queue
2560 **/
i40e_ctrl_vf_rx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2561 static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2562 bool enable)
2563 {
2564 struct i40e_pf *pf = vsi->back;
2565 int ret = 0;
2566 u16 q_id;
2567
2568 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2569 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2570 enable);
2571 if (ret)
2572 break;
2573 }
2574 return ret;
2575 }
2576
2577 /**
2578 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2579 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2580 *
2581 * Returns true if validation was successful, else false.
2582 */
i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select * vqs)2583 static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2584 {
2585 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2586 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2587 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2588 return false;
2589
2590 return true;
2591 }
2592
2593 /**
2594 * i40e_vc_enable_queues_msg
2595 * @vf: pointer to the VF info
2596 * @msg: pointer to the msg buffer
2597 *
2598 * called from the VF to enable all or specific queue(s)
2599 **/
i40e_vc_enable_queues_msg(struct i40e_vf * vf,u8 * msg)2600 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2601 {
2602 struct virtchnl_queue_select *vqs =
2603 (struct virtchnl_queue_select *)msg;
2604 struct i40e_pf *pf = vf->pf;
2605 int aq_ret = 0;
2606 int i;
2607
2608 if (vf->is_disabled_from_host) {
2609 aq_ret = -EPERM;
2610 dev_info(&pf->pdev->dev,
2611 "Admin has disabled VF %d, will not enable queues\n",
2612 vf->vf_id);
2613 goto error_param;
2614 }
2615
2616 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2617 aq_ret = -EINVAL;
2618 goto error_param;
2619 }
2620
2621 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2622 aq_ret = -EINVAL;
2623 goto error_param;
2624 }
2625
2626 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2627 aq_ret = -EINVAL;
2628 goto error_param;
2629 }
2630
2631 /* Use the queue bit map sent by the VF */
2632 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2633 true)) {
2634 aq_ret = -EIO;
2635 goto error_param;
2636 }
2637 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2638 true)) {
2639 aq_ret = -EIO;
2640 goto error_param;
2641 }
2642
2643 /* need to start the rings for additional ADq VSI's as well */
2644 if (vf->adq_enabled) {
2645 /* zero belongs to LAN VSI */
2646 for (i = 1; i < vf->num_tc; i++) {
2647 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2648 aq_ret = -EIO;
2649 }
2650 }
2651
2652 error_param:
2653 /* send the response to the VF */
2654 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2655 aq_ret);
2656 }
2657
2658 /**
2659 * i40e_vc_disable_queues_msg
2660 * @vf: pointer to the VF info
2661 * @msg: pointer to the msg buffer
2662 *
2663 * called from the VF to disable all or specific
2664 * queue(s)
2665 **/
i40e_vc_disable_queues_msg(struct i40e_vf * vf,u8 * msg)2666 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2667 {
2668 struct virtchnl_queue_select *vqs =
2669 (struct virtchnl_queue_select *)msg;
2670 struct i40e_pf *pf = vf->pf;
2671 int aq_ret = 0;
2672
2673 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2674 aq_ret = -EINVAL;
2675 goto error_param;
2676 }
2677
2678 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2679 aq_ret = -EINVAL;
2680 goto error_param;
2681 }
2682
2683 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2684 aq_ret = -EINVAL;
2685 goto error_param;
2686 }
2687
2688 /* Use the queue bit map sent by the VF */
2689 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2690 false)) {
2691 aq_ret = -EIO;
2692 goto error_param;
2693 }
2694 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2695 false)) {
2696 aq_ret = -EIO;
2697 goto error_param;
2698 }
2699 error_param:
2700 /* send the response to the VF */
2701 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2702 aq_ret);
2703 }
2704
2705 /**
2706 * i40e_check_enough_queue - find big enough queue number
2707 * @vf: pointer to the VF info
2708 * @needed: the number of items needed
2709 *
2710 * Returns the base item index of the queue, or negative for error
2711 **/
i40e_check_enough_queue(struct i40e_vf * vf,u16 needed)2712 static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2713 {
2714 unsigned int i, cur_queues, more, pool_size;
2715 struct i40e_lump_tracking *pile;
2716 struct i40e_pf *pf = vf->pf;
2717 struct i40e_vsi *vsi;
2718
2719 vsi = pf->vsi[vf->lan_vsi_idx];
2720 cur_queues = vsi->alloc_queue_pairs;
2721
2722 /* if current allocated queues are enough for need */
2723 if (cur_queues >= needed)
2724 return vsi->base_queue;
2725
2726 pile = pf->qp_pile;
2727 if (cur_queues > 0) {
2728 /* if the allocated queues are not zero
2729 * just check if there are enough queues for more
2730 * behind the allocated queues.
2731 */
2732 more = needed - cur_queues;
2733 for (i = vsi->base_queue + cur_queues;
2734 i < pile->num_entries; i++) {
2735 if (pile->list[i] & I40E_PILE_VALID_BIT)
2736 break;
2737
2738 if (more-- == 1)
2739 /* there is enough */
2740 return vsi->base_queue;
2741 }
2742 }
2743
2744 pool_size = 0;
2745 for (i = 0; i < pile->num_entries; i++) {
2746 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2747 pool_size = 0;
2748 continue;
2749 }
2750 if (needed <= ++pool_size)
2751 /* there is enough */
2752 return i;
2753 }
2754
2755 return -ENOMEM;
2756 }
2757
2758 /**
2759 * i40e_vc_request_queues_msg
2760 * @vf: pointer to the VF info
2761 * @msg: pointer to the msg buffer
2762 *
2763 * VFs get a default number of queues but can use this message to request a
2764 * different number. If the request is successful, PF will reset the VF and
2765 * return 0. If unsuccessful, PF will send message informing VF of number of
2766 * available queues and return result of sending VF a message.
2767 **/
i40e_vc_request_queues_msg(struct i40e_vf * vf,u8 * msg)2768 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2769 {
2770 struct virtchnl_vf_res_request *vfres =
2771 (struct virtchnl_vf_res_request *)msg;
2772 u16 req_pairs = vfres->num_queue_pairs;
2773 u8 cur_pairs = vf->num_queue_pairs;
2774 struct i40e_pf *pf = vf->pf;
2775
2776 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2777 return -EINVAL;
2778
2779 if (req_pairs > I40E_MAX_VF_QUEUES) {
2780 dev_err(&pf->pdev->dev,
2781 "VF %d tried to request more than %d queues.\n",
2782 vf->vf_id,
2783 I40E_MAX_VF_QUEUES);
2784 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2785 } else if (req_pairs - cur_pairs > pf->queues_left) {
2786 dev_warn(&pf->pdev->dev,
2787 "VF %d requested %d more queues, but only %d left.\n",
2788 vf->vf_id,
2789 req_pairs - cur_pairs,
2790 pf->queues_left);
2791 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2792 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2793 dev_warn(&pf->pdev->dev,
2794 "VF %d requested %d more queues, but there is not enough for it.\n",
2795 vf->vf_id,
2796 req_pairs - cur_pairs);
2797 vfres->num_queue_pairs = cur_pairs;
2798 } else {
2799 /* successful request */
2800 vf->num_req_queues = req_pairs;
2801 i40e_vc_reset_vf(vf, true);
2802 return 0;
2803 }
2804
2805 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2806 (u8 *)vfres, sizeof(*vfres));
2807 }
2808
2809 /**
2810 * i40e_vc_get_stats_msg
2811 * @vf: pointer to the VF info
2812 * @msg: pointer to the msg buffer
2813 *
2814 * called from the VF to get vsi stats
2815 **/
i40e_vc_get_stats_msg(struct i40e_vf * vf,u8 * msg)2816 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2817 {
2818 struct virtchnl_queue_select *vqs =
2819 (struct virtchnl_queue_select *)msg;
2820 struct i40e_pf *pf = vf->pf;
2821 struct i40e_eth_stats stats;
2822 int aq_ret = 0;
2823 struct i40e_vsi *vsi;
2824
2825 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2826
2827 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2828 aq_ret = -EINVAL;
2829 goto error_param;
2830 }
2831
2832 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2833 aq_ret = -EINVAL;
2834 goto error_param;
2835 }
2836
2837 vsi = pf->vsi[vf->lan_vsi_idx];
2838 if (!vsi) {
2839 aq_ret = -EINVAL;
2840 goto error_param;
2841 }
2842 i40e_update_eth_stats(vsi);
2843 stats = vsi->eth_stats;
2844
2845 error_param:
2846 /* send the response back to the VF */
2847 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2848 (u8 *)&stats, sizeof(stats));
2849 }
2850
2851 /**
2852 * i40e_can_vf_change_mac
2853 * @vf: pointer to the VF info
2854 *
2855 * Return true if the VF is allowed to change its MAC filters, false otherwise
2856 */
i40e_can_vf_change_mac(struct i40e_vf * vf)2857 static bool i40e_can_vf_change_mac(struct i40e_vf *vf)
2858 {
2859 /* If the VF MAC address has been set administratively (via the
2860 * ndo_set_vf_mac command), then deny permission to the VF to
2861 * add/delete unicast MAC addresses, unless the VF is trusted
2862 */
2863 if (vf->pf_set_mac && !vf->trusted)
2864 return false;
2865
2866 return true;
2867 }
2868
2869 #define I40E_MAX_MACVLAN_PER_HW 3072
2870 #define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \
2871 (num_ports))
2872 /* If the VF is not trusted restrict the number of MAC/VLAN it can program
2873 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2874 */
2875 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2876 #define I40E_VC_MAX_VLAN_PER_VF 16
2877
2878 #define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \
2879 ({ typeof(vf_num) vf_num_ = (vf_num); \
2880 typeof(num_ports) num_ports_ = (num_ports); \
2881 ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \
2882 I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \
2883 I40E_VC_MAX_MAC_ADDR_PER_VF; })
2884 /**
2885 * i40e_check_vf_permission
2886 * @vf: pointer to the VF info
2887 * @al: MAC address list from virtchnl
2888 *
2889 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2890 * if any address in the list is not valid. Checks the following conditions:
2891 *
2892 * 1) broadcast and zero addresses are never valid
2893 * 2) unicast addresses are not allowed if the VMM has administratively set
2894 * the VF MAC address, unless the VF is marked as privileged.
2895 * 3) There is enough space to add all the addresses.
2896 *
2897 * Note that to guarantee consistency, it is expected this function be called
2898 * while holding the mac_filter_hash_lock, as otherwise the current number of
2899 * addresses might not be accurate.
2900 **/
i40e_check_vf_permission(struct i40e_vf * vf,struct virtchnl_ether_addr_list * al)2901 static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2902 struct virtchnl_ether_addr_list *al)
2903 {
2904 struct i40e_pf *pf = vf->pf;
2905 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2906 struct i40e_hw *hw = &pf->hw;
2907 int mac2add_cnt = 0;
2908 int i;
2909
2910 for (i = 0; i < al->num_elements; i++) {
2911 struct i40e_mac_filter *f;
2912 u8 *addr = al->list[i].addr;
2913
2914 if (is_broadcast_ether_addr(addr) ||
2915 is_zero_ether_addr(addr)) {
2916 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2917 addr);
2918 return -EINVAL;
2919 }
2920
2921 /* If the host VMM administrator has set the VF MAC address
2922 * administratively via the ndo_set_vf_mac command then deny
2923 * permission to the VF to add or delete unicast MAC addresses.
2924 * Unless the VF is privileged and then it can do whatever.
2925 * The VF may request to set the MAC address filter already
2926 * assigned to it so do not return an error in that case.
2927 */
2928 if (!i40e_can_vf_change_mac(vf) &&
2929 !is_multicast_ether_addr(addr) &&
2930 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2931 dev_err(&pf->pdev->dev,
2932 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2933 return -EPERM;
2934 }
2935
2936 /*count filters that really will be added*/
2937 f = i40e_find_mac(vsi, addr);
2938 if (!f)
2939 ++mac2add_cnt;
2940 }
2941
2942 /* If this VF is not privileged, then we can't add more than a limited
2943 * number of addresses. Check to make sure that the additions do not
2944 * push us over the limit.
2945 */
2946 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2947 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2948 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2949 dev_err(&pf->pdev->dev,
2950 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2951 return -EPERM;
2952 }
2953 /* If this VF is trusted, it can use more resources than untrusted.
2954 * However to ensure that every trusted VF has appropriate number of
2955 * resources, divide whole pool of resources per port and then across
2956 * all VFs.
2957 */
2958 } else {
2959 if ((i40e_count_filters(vsi) + mac2add_cnt) >
2960 I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
2961 hw->num_ports)) {
2962 dev_err(&pf->pdev->dev,
2963 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
2964 return -EPERM;
2965 }
2966 }
2967 return 0;
2968 }
2969
2970 /**
2971 * i40e_vc_ether_addr_type - get type of virtchnl_ether_addr
2972 * @vc_ether_addr: used to extract the type
2973 **/
2974 static u8
i40e_vc_ether_addr_type(struct virtchnl_ether_addr * vc_ether_addr)2975 i40e_vc_ether_addr_type(struct virtchnl_ether_addr *vc_ether_addr)
2976 {
2977 return vc_ether_addr->type & VIRTCHNL_ETHER_ADDR_TYPE_MASK;
2978 }
2979
2980 /**
2981 * i40e_is_vc_addr_legacy
2982 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2983 *
2984 * check if the MAC address is from an older VF
2985 **/
2986 static bool
i40e_is_vc_addr_legacy(struct virtchnl_ether_addr * vc_ether_addr)2987 i40e_is_vc_addr_legacy(struct virtchnl_ether_addr *vc_ether_addr)
2988 {
2989 return i40e_vc_ether_addr_type(vc_ether_addr) ==
2990 VIRTCHNL_ETHER_ADDR_LEGACY;
2991 }
2992
2993 /**
2994 * i40e_is_vc_addr_primary
2995 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type
2996 *
2997 * check if the MAC address is the VF's primary MAC
2998 * This function should only be called when the MAC address in
2999 * virtchnl_ether_addr is a valid unicast MAC
3000 **/
3001 static bool
i40e_is_vc_addr_primary(struct virtchnl_ether_addr * vc_ether_addr)3002 i40e_is_vc_addr_primary(struct virtchnl_ether_addr *vc_ether_addr)
3003 {
3004 return i40e_vc_ether_addr_type(vc_ether_addr) ==
3005 VIRTCHNL_ETHER_ADDR_PRIMARY;
3006 }
3007
3008 /**
3009 * i40e_update_vf_mac_addr
3010 * @vf: VF to update
3011 * @vc_ether_addr: structure from VIRTCHNL with MAC to add
3012 *
3013 * update the VF's cached hardware MAC if allowed
3014 **/
3015 static void
i40e_update_vf_mac_addr(struct i40e_vf * vf,struct virtchnl_ether_addr * vc_ether_addr)3016 i40e_update_vf_mac_addr(struct i40e_vf *vf,
3017 struct virtchnl_ether_addr *vc_ether_addr)
3018 {
3019 u8 *mac_addr = vc_ether_addr->addr;
3020
3021 if (!is_valid_ether_addr(mac_addr))
3022 return;
3023
3024 /* If request to add MAC filter is a primary request update its default
3025 * MAC address with the requested one. If it is a legacy request then
3026 * check if current default is empty if so update the default MAC
3027 */
3028 if (i40e_is_vc_addr_primary(vc_ether_addr)) {
3029 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3030 } else if (i40e_is_vc_addr_legacy(vc_ether_addr)) {
3031 if (is_zero_ether_addr(vf->default_lan_addr.addr))
3032 ether_addr_copy(vf->default_lan_addr.addr, mac_addr);
3033 }
3034 }
3035
3036 /**
3037 * i40e_vc_add_mac_addr_msg
3038 * @vf: pointer to the VF info
3039 * @msg: pointer to the msg buffer
3040 *
3041 * add guest mac address filter
3042 **/
i40e_vc_add_mac_addr_msg(struct i40e_vf * vf,u8 * msg)3043 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3044 {
3045 struct virtchnl_ether_addr_list *al =
3046 (struct virtchnl_ether_addr_list *)msg;
3047 struct i40e_pf *pf = vf->pf;
3048 struct i40e_vsi *vsi = NULL;
3049 int ret = 0;
3050 int i;
3051
3052 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3053 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3054 ret = -EINVAL;
3055 goto error_param;
3056 }
3057
3058 vsi = pf->vsi[vf->lan_vsi_idx];
3059
3060 /* Lock once, because all function inside for loop accesses VSI's
3061 * MAC filter list which needs to be protected using same lock.
3062 */
3063 spin_lock_bh(&vsi->mac_filter_hash_lock);
3064
3065 ret = i40e_check_vf_permission(vf, al);
3066 if (ret) {
3067 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3068 goto error_param;
3069 }
3070
3071 /* add new addresses to the list */
3072 for (i = 0; i < al->num_elements; i++) {
3073 struct i40e_mac_filter *f;
3074
3075 f = i40e_find_mac(vsi, al->list[i].addr);
3076 if (!f) {
3077 f = i40e_add_mac_filter(vsi, al->list[i].addr);
3078
3079 if (!f) {
3080 dev_err(&pf->pdev->dev,
3081 "Unable to add MAC filter %pM for VF %d\n",
3082 al->list[i].addr, vf->vf_id);
3083 ret = -EINVAL;
3084 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3085 goto error_param;
3086 }
3087 }
3088 i40e_update_vf_mac_addr(vf, &al->list[i]);
3089 }
3090 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3091
3092 /* program the updated filter list */
3093 ret = i40e_sync_vsi_filters(vsi);
3094 if (ret)
3095 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3096 vf->vf_id, ret);
3097
3098 error_param:
3099 /* send the response to the VF */
3100 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
3101 ret, NULL, 0);
3102 }
3103
3104 /**
3105 * i40e_vc_del_mac_addr_msg
3106 * @vf: pointer to the VF info
3107 * @msg: pointer to the msg buffer
3108 *
3109 * remove guest mac address filter
3110 **/
i40e_vc_del_mac_addr_msg(struct i40e_vf * vf,u8 * msg)3111 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
3112 {
3113 struct virtchnl_ether_addr_list *al =
3114 (struct virtchnl_ether_addr_list *)msg;
3115 bool was_unimac_deleted = false;
3116 struct i40e_pf *pf = vf->pf;
3117 struct i40e_vsi *vsi = NULL;
3118 int ret = 0;
3119 int i;
3120
3121 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3122 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
3123 ret = -EINVAL;
3124 goto error_param;
3125 }
3126
3127 for (i = 0; i < al->num_elements; i++) {
3128 if (is_broadcast_ether_addr(al->list[i].addr) ||
3129 is_zero_ether_addr(al->list[i].addr)) {
3130 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
3131 al->list[i].addr, vf->vf_id);
3132 ret = -EINVAL;
3133 goto error_param;
3134 }
3135 }
3136 vsi = pf->vsi[vf->lan_vsi_idx];
3137
3138 spin_lock_bh(&vsi->mac_filter_hash_lock);
3139 /* delete addresses from the list */
3140 for (i = 0; i < al->num_elements; i++) {
3141 const u8 *addr = al->list[i].addr;
3142
3143 /* Allow to delete VF primary MAC only if it was not set
3144 * administratively by PF or if VF is trusted.
3145 */
3146 if (ether_addr_equal(addr, vf->default_lan_addr.addr)) {
3147 if (i40e_can_vf_change_mac(vf))
3148 was_unimac_deleted = true;
3149 else
3150 continue;
3151 }
3152
3153 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
3154 ret = -EINVAL;
3155 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3156 goto error_param;
3157 }
3158 }
3159
3160 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3161
3162 if (was_unimac_deleted)
3163 eth_zero_addr(vf->default_lan_addr.addr);
3164
3165 /* program the updated filter list */
3166 ret = i40e_sync_vsi_filters(vsi);
3167 if (ret)
3168 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3169 vf->vf_id, ret);
3170
3171 if (vf->trusted && was_unimac_deleted) {
3172 struct i40e_mac_filter *f;
3173 struct hlist_node *h;
3174 u8 *macaddr = NULL;
3175 int bkt;
3176
3177 /* set last unicast mac address as default */
3178 spin_lock_bh(&vsi->mac_filter_hash_lock);
3179 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3180 if (is_valid_ether_addr(f->macaddr))
3181 macaddr = f->macaddr;
3182 }
3183 if (macaddr)
3184 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
3185 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3186 }
3187 error_param:
3188 /* send the response to the VF */
3189 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3190 }
3191
3192 /**
3193 * i40e_vc_add_vlan_msg
3194 * @vf: pointer to the VF info
3195 * @msg: pointer to the msg buffer
3196 *
3197 * program guest vlan id
3198 **/
i40e_vc_add_vlan_msg(struct i40e_vf * vf,u8 * msg)3199 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3200 {
3201 struct virtchnl_vlan_filter_list *vfl =
3202 (struct virtchnl_vlan_filter_list *)msg;
3203 struct i40e_pf *pf = vf->pf;
3204 struct i40e_vsi *vsi = NULL;
3205 int aq_ret = 0;
3206 int i;
3207
3208 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3209 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3210 dev_err(&pf->pdev->dev,
3211 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3212 goto error_param;
3213 }
3214 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3215 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3216 aq_ret = -EINVAL;
3217 goto error_param;
3218 }
3219
3220 for (i = 0; i < vfl->num_elements; i++) {
3221 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3222 aq_ret = -EINVAL;
3223 dev_err(&pf->pdev->dev,
3224 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3225 goto error_param;
3226 }
3227 }
3228 vsi = pf->vsi[vf->lan_vsi_idx];
3229 if (vsi->info.pvid) {
3230 aq_ret = -EINVAL;
3231 goto error_param;
3232 }
3233
3234 i40e_vlan_stripping_enable(vsi);
3235 for (i = 0; i < vfl->num_elements; i++) {
3236 /* add new VLAN filter */
3237 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3238 if (!ret)
3239 vf->num_vlan++;
3240
3241 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3242 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3243 true,
3244 vfl->vlan_id[i],
3245 NULL);
3246 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3247 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3248 true,
3249 vfl->vlan_id[i],
3250 NULL);
3251
3252 if (ret)
3253 dev_err(&pf->pdev->dev,
3254 "Unable to add VLAN filter %d for VF %d, error %d\n",
3255 vfl->vlan_id[i], vf->vf_id, ret);
3256 }
3257
3258 error_param:
3259 /* send the response to the VF */
3260 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3261 }
3262
3263 /**
3264 * i40e_vc_remove_vlan_msg
3265 * @vf: pointer to the VF info
3266 * @msg: pointer to the msg buffer
3267 *
3268 * remove programmed guest vlan id
3269 **/
i40e_vc_remove_vlan_msg(struct i40e_vf * vf,u8 * msg)3270 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3271 {
3272 struct virtchnl_vlan_filter_list *vfl =
3273 (struct virtchnl_vlan_filter_list *)msg;
3274 struct i40e_pf *pf = vf->pf;
3275 struct i40e_vsi *vsi = NULL;
3276 int aq_ret = 0;
3277 int i;
3278
3279 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3280 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3281 aq_ret = -EINVAL;
3282 goto error_param;
3283 }
3284
3285 for (i = 0; i < vfl->num_elements; i++) {
3286 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3287 aq_ret = -EINVAL;
3288 goto error_param;
3289 }
3290 }
3291
3292 vsi = pf->vsi[vf->lan_vsi_idx];
3293 if (vsi->info.pvid) {
3294 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3295 aq_ret = -EINVAL;
3296 goto error_param;
3297 }
3298
3299 for (i = 0; i < vfl->num_elements; i++) {
3300 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3301 vf->num_vlan--;
3302
3303 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3304 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3305 false,
3306 vfl->vlan_id[i],
3307 NULL);
3308 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3309 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3310 false,
3311 vfl->vlan_id[i],
3312 NULL);
3313 }
3314
3315 error_param:
3316 /* send the response to the VF */
3317 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3318 }
3319
3320 /**
3321 * i40e_vc_rdma_msg
3322 * @vf: pointer to the VF info
3323 * @msg: pointer to the msg buffer
3324 * @msglen: msg length
3325 *
3326 * called from the VF for the iwarp msgs
3327 **/
i40e_vc_rdma_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)3328 static int i40e_vc_rdma_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3329 {
3330 struct i40e_pf *pf = vf->pf;
3331 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3332 int aq_ret = 0;
3333
3334 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3335 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3336 aq_ret = -EINVAL;
3337 goto error_param;
3338 }
3339
3340 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
3341 msg, msglen);
3342
3343 error_param:
3344 /* send the response to the VF */
3345 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_RDMA,
3346 aq_ret);
3347 }
3348
3349 /**
3350 * i40e_vc_rdma_qvmap_msg
3351 * @vf: pointer to the VF info
3352 * @msg: pointer to the msg buffer
3353 * @config: config qvmap or release it
3354 *
3355 * called from the VF for the iwarp msgs
3356 **/
i40e_vc_rdma_qvmap_msg(struct i40e_vf * vf,u8 * msg,bool config)3357 static int i40e_vc_rdma_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3358 {
3359 struct virtchnl_rdma_qvlist_info *qvlist_info =
3360 (struct virtchnl_rdma_qvlist_info *)msg;
3361 int aq_ret = 0;
3362
3363 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3364 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) {
3365 aq_ret = -EINVAL;
3366 goto error_param;
3367 }
3368
3369 if (config) {
3370 if (i40e_config_rdma_qvlist(vf, qvlist_info))
3371 aq_ret = -EINVAL;
3372 } else {
3373 i40e_release_rdma_qvlist(vf);
3374 }
3375
3376 error_param:
3377 /* send the response to the VF */
3378 return i40e_vc_send_resp_to_vf(vf,
3379 config ? VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP :
3380 VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP,
3381 aq_ret);
3382 }
3383
3384 /**
3385 * i40e_vc_config_rss_key
3386 * @vf: pointer to the VF info
3387 * @msg: pointer to the msg buffer
3388 *
3389 * Configure the VF's RSS key
3390 **/
i40e_vc_config_rss_key(struct i40e_vf * vf,u8 * msg)3391 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3392 {
3393 struct virtchnl_rss_key *vrk =
3394 (struct virtchnl_rss_key *)msg;
3395 struct i40e_pf *pf = vf->pf;
3396 struct i40e_vsi *vsi = NULL;
3397 int aq_ret = 0;
3398
3399 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3400 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3401 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3402 aq_ret = -EINVAL;
3403 goto err;
3404 }
3405
3406 vsi = pf->vsi[vf->lan_vsi_idx];
3407 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3408 err:
3409 /* send the response to the VF */
3410 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3411 aq_ret);
3412 }
3413
3414 /**
3415 * i40e_vc_config_rss_lut
3416 * @vf: pointer to the VF info
3417 * @msg: pointer to the msg buffer
3418 *
3419 * Configure the VF's RSS LUT
3420 **/
i40e_vc_config_rss_lut(struct i40e_vf * vf,u8 * msg)3421 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3422 {
3423 struct virtchnl_rss_lut *vrl =
3424 (struct virtchnl_rss_lut *)msg;
3425 struct i40e_pf *pf = vf->pf;
3426 struct i40e_vsi *vsi = NULL;
3427 int aq_ret = 0;
3428 u16 i;
3429
3430 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3431 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3432 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3433 aq_ret = -EINVAL;
3434 goto err;
3435 }
3436
3437 for (i = 0; i < vrl->lut_entries; i++)
3438 if (vrl->lut[i] >= vf->num_queue_pairs) {
3439 aq_ret = -EINVAL;
3440 goto err;
3441 }
3442
3443 vsi = pf->vsi[vf->lan_vsi_idx];
3444 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3445 /* send the response to the VF */
3446 err:
3447 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3448 aq_ret);
3449 }
3450
3451 /**
3452 * i40e_vc_get_rss_hena
3453 * @vf: pointer to the VF info
3454 * @msg: pointer to the msg buffer
3455 *
3456 * Return the RSS HENA bits allowed by the hardware
3457 **/
i40e_vc_get_rss_hena(struct i40e_vf * vf,u8 * msg)3458 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3459 {
3460 struct virtchnl_rss_hena *vrh = NULL;
3461 struct i40e_pf *pf = vf->pf;
3462 int aq_ret = 0;
3463 int len = 0;
3464
3465 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3466 aq_ret = -EINVAL;
3467 goto err;
3468 }
3469 len = sizeof(struct virtchnl_rss_hena);
3470
3471 vrh = kzalloc(len, GFP_KERNEL);
3472 if (!vrh) {
3473 aq_ret = -ENOMEM;
3474 len = 0;
3475 goto err;
3476 }
3477 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3478 err:
3479 /* send the response back to the VF */
3480 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3481 aq_ret, (u8 *)vrh, len);
3482 kfree(vrh);
3483 return aq_ret;
3484 }
3485
3486 /**
3487 * i40e_vc_set_rss_hena
3488 * @vf: pointer to the VF info
3489 * @msg: pointer to the msg buffer
3490 *
3491 * Set the RSS HENA bits for the VF
3492 **/
i40e_vc_set_rss_hena(struct i40e_vf * vf,u8 * msg)3493 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3494 {
3495 struct virtchnl_rss_hena *vrh =
3496 (struct virtchnl_rss_hena *)msg;
3497 struct i40e_pf *pf = vf->pf;
3498 struct i40e_hw *hw = &pf->hw;
3499 int aq_ret = 0;
3500
3501 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3502 aq_ret = -EINVAL;
3503 goto err;
3504 }
3505 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3506 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3507 (u32)(vrh->hena >> 32));
3508
3509 /* send the response to the VF */
3510 err:
3511 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3512 }
3513
3514 /**
3515 * i40e_vc_enable_vlan_stripping
3516 * @vf: pointer to the VF info
3517 * @msg: pointer to the msg buffer
3518 *
3519 * Enable vlan header stripping for the VF
3520 **/
i40e_vc_enable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3521 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3522 {
3523 struct i40e_vsi *vsi;
3524 int aq_ret = 0;
3525
3526 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3527 aq_ret = -EINVAL;
3528 goto err;
3529 }
3530
3531 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3532 i40e_vlan_stripping_enable(vsi);
3533
3534 /* send the response to the VF */
3535 err:
3536 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3537 aq_ret);
3538 }
3539
3540 /**
3541 * i40e_vc_disable_vlan_stripping
3542 * @vf: pointer to the VF info
3543 * @msg: pointer to the msg buffer
3544 *
3545 * Disable vlan header stripping for the VF
3546 **/
i40e_vc_disable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3547 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3548 {
3549 struct i40e_vsi *vsi;
3550 int aq_ret = 0;
3551
3552 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3553 aq_ret = -EINVAL;
3554 goto err;
3555 }
3556
3557 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3558 i40e_vlan_stripping_disable(vsi);
3559
3560 /* send the response to the VF */
3561 err:
3562 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3563 aq_ret);
3564 }
3565
3566 /**
3567 * i40e_validate_cloud_filter
3568 * @vf: pointer to VF structure
3569 * @tc_filter: pointer to filter requested
3570 *
3571 * This function validates cloud filter programmed as TC filter for ADq
3572 **/
i40e_validate_cloud_filter(struct i40e_vf * vf,struct virtchnl_filter * tc_filter)3573 static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3574 struct virtchnl_filter *tc_filter)
3575 {
3576 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3577 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3578 struct i40e_pf *pf = vf->pf;
3579 struct i40e_vsi *vsi = NULL;
3580 struct i40e_mac_filter *f;
3581 struct hlist_node *h;
3582 bool found = false;
3583 int bkt;
3584
3585 if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) {
3586 dev_info(&pf->pdev->dev,
3587 "VF %d: ADQ doesn't support this action (%d)\n",
3588 vf->vf_id, tc_filter->action);
3589 goto err;
3590 }
3591
3592 /* action_meta is TC number here to which the filter is applied */
3593 if (!tc_filter->action_meta ||
3594 tc_filter->action_meta > vf->num_tc) {
3595 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3596 vf->vf_id, tc_filter->action_meta);
3597 goto err;
3598 }
3599
3600 /* Check filter if it's programmed for advanced mode or basic mode.
3601 * There are two ADq modes (for VF only),
3602 * 1. Basic mode: intended to allow as many filter options as possible
3603 * to be added to a VF in Non-trusted mode. Main goal is
3604 * to add filters to its own MAC and VLAN id.
3605 * 2. Advanced mode: is for allowing filters to be applied other than
3606 * its own MAC or VLAN. This mode requires the VF to be
3607 * Trusted.
3608 */
3609 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3610 vsi = pf->vsi[vf->lan_vsi_idx];
3611 f = i40e_find_mac(vsi, data.dst_mac);
3612
3613 if (!f) {
3614 dev_info(&pf->pdev->dev,
3615 "Destination MAC %pM doesn't belong to VF %d\n",
3616 data.dst_mac, vf->vf_id);
3617 goto err;
3618 }
3619
3620 if (mask.vlan_id) {
3621 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3622 hlist) {
3623 if (f->vlan == ntohs(data.vlan_id)) {
3624 found = true;
3625 break;
3626 }
3627 }
3628 if (!found) {
3629 dev_info(&pf->pdev->dev,
3630 "VF %d doesn't have any VLAN id %u\n",
3631 vf->vf_id, ntohs(data.vlan_id));
3632 goto err;
3633 }
3634 }
3635 } else {
3636 /* Check if VF is trusted */
3637 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3638 dev_err(&pf->pdev->dev,
3639 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3640 vf->vf_id);
3641 return -EIO;
3642 }
3643 }
3644
3645 if (mask.dst_mac[0] & data.dst_mac[0]) {
3646 if (is_broadcast_ether_addr(data.dst_mac) ||
3647 is_zero_ether_addr(data.dst_mac)) {
3648 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3649 vf->vf_id, data.dst_mac);
3650 goto err;
3651 }
3652 }
3653
3654 if (mask.src_mac[0] & data.src_mac[0]) {
3655 if (is_broadcast_ether_addr(data.src_mac) ||
3656 is_zero_ether_addr(data.src_mac)) {
3657 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3658 vf->vf_id, data.src_mac);
3659 goto err;
3660 }
3661 }
3662
3663 if (mask.dst_port & data.dst_port) {
3664 if (!data.dst_port) {
3665 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3666 vf->vf_id);
3667 goto err;
3668 }
3669 }
3670
3671 if (mask.src_port & data.src_port) {
3672 if (!data.src_port) {
3673 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3674 vf->vf_id);
3675 goto err;
3676 }
3677 }
3678
3679 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3680 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3681 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3682 vf->vf_id);
3683 goto err;
3684 }
3685
3686 if (mask.vlan_id & data.vlan_id) {
3687 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3688 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3689 vf->vf_id);
3690 goto err;
3691 }
3692 }
3693
3694 return 0;
3695 err:
3696 return -EIO;
3697 }
3698
3699 /**
3700 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3701 * @vf: pointer to the VF info
3702 * @seid: seid of the vsi it is searching for
3703 **/
i40e_find_vsi_from_seid(struct i40e_vf * vf,u16 seid)3704 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3705 {
3706 struct i40e_pf *pf = vf->pf;
3707 struct i40e_vsi *vsi = NULL;
3708 int i;
3709
3710 for (i = 0; i < vf->num_tc ; i++) {
3711 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3712 if (vsi && vsi->seid == seid)
3713 return vsi;
3714 }
3715 return NULL;
3716 }
3717
3718 /**
3719 * i40e_del_all_cloud_filters
3720 * @vf: pointer to the VF info
3721 *
3722 * This function deletes all cloud filters
3723 **/
i40e_del_all_cloud_filters(struct i40e_vf * vf)3724 static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3725 {
3726 struct i40e_cloud_filter *cfilter = NULL;
3727 struct i40e_pf *pf = vf->pf;
3728 struct i40e_vsi *vsi = NULL;
3729 struct hlist_node *node;
3730 int ret;
3731
3732 hlist_for_each_entry_safe(cfilter, node,
3733 &vf->cloud_filter_list, cloud_node) {
3734 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3735
3736 if (!vsi) {
3737 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3738 vf->vf_id, cfilter->seid);
3739 continue;
3740 }
3741
3742 if (cfilter->dst_port)
3743 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3744 false);
3745 else
3746 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3747 if (ret)
3748 dev_err(&pf->pdev->dev,
3749 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3750 vf->vf_id, ERR_PTR(ret),
3751 i40e_aq_str(&pf->hw,
3752 pf->hw.aq.asq_last_status));
3753
3754 hlist_del(&cfilter->cloud_node);
3755 kfree(cfilter);
3756 vf->num_cloud_filters--;
3757 }
3758 }
3759
3760 /**
3761 * i40e_vc_del_cloud_filter
3762 * @vf: pointer to the VF info
3763 * @msg: pointer to the msg buffer
3764 *
3765 * This function deletes a cloud filter programmed as TC filter for ADq
3766 **/
i40e_vc_del_cloud_filter(struct i40e_vf * vf,u8 * msg)3767 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3768 {
3769 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3770 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3771 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3772 struct i40e_cloud_filter cfilter, *cf = NULL;
3773 struct i40e_pf *pf = vf->pf;
3774 struct i40e_vsi *vsi = NULL;
3775 struct hlist_node *node;
3776 int aq_ret = 0;
3777 int i, ret;
3778
3779 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3780 aq_ret = -EINVAL;
3781 goto err;
3782 }
3783
3784 if (!vf->adq_enabled) {
3785 dev_info(&pf->pdev->dev,
3786 "VF %d: ADq not enabled, can't apply cloud filter\n",
3787 vf->vf_id);
3788 aq_ret = -EINVAL;
3789 goto err;
3790 }
3791
3792 if (i40e_validate_cloud_filter(vf, vcf)) {
3793 dev_info(&pf->pdev->dev,
3794 "VF %d: Invalid input, can't apply cloud filter\n",
3795 vf->vf_id);
3796 aq_ret = -EINVAL;
3797 goto err;
3798 }
3799
3800 memset(&cfilter, 0, sizeof(cfilter));
3801 /* parse destination mac address */
3802 for (i = 0; i < ETH_ALEN; i++)
3803 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3804
3805 /* parse source mac address */
3806 for (i = 0; i < ETH_ALEN; i++)
3807 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3808
3809 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3810 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3811 cfilter.src_port = mask.src_port & tcf.src_port;
3812
3813 switch (vcf->flow_type) {
3814 case VIRTCHNL_TCP_V4_FLOW:
3815 cfilter.n_proto = ETH_P_IP;
3816 if (mask.dst_ip[0] & tcf.dst_ip[0])
3817 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3818 ARRAY_SIZE(tcf.dst_ip));
3819 else if (mask.src_ip[0] & tcf.dst_ip[0])
3820 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3821 ARRAY_SIZE(tcf.dst_ip));
3822 break;
3823 case VIRTCHNL_TCP_V6_FLOW:
3824 cfilter.n_proto = ETH_P_IPV6;
3825 if (mask.dst_ip[3] & tcf.dst_ip[3])
3826 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3827 sizeof(cfilter.ip.v6.dst_ip6));
3828 if (mask.src_ip[3] & tcf.src_ip[3])
3829 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3830 sizeof(cfilter.ip.v6.src_ip6));
3831 break;
3832 default:
3833 /* TC filter can be configured based on different combinations
3834 * and in this case IP is not a part of filter config
3835 */
3836 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3837 vf->vf_id);
3838 }
3839
3840 /* get the vsi to which the tc belongs to */
3841 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3842 cfilter.seid = vsi->seid;
3843 cfilter.flags = vcf->field_flags;
3844
3845 /* Deleting TC filter */
3846 if (tcf.dst_port)
3847 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3848 else
3849 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3850 if (ret) {
3851 dev_err(&pf->pdev->dev,
3852 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n",
3853 vf->vf_id, ERR_PTR(ret),
3854 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3855 goto err;
3856 }
3857
3858 hlist_for_each_entry_safe(cf, node,
3859 &vf->cloud_filter_list, cloud_node) {
3860 if (cf->seid != cfilter.seid)
3861 continue;
3862 if (mask.dst_port)
3863 if (cfilter.dst_port != cf->dst_port)
3864 continue;
3865 if (mask.dst_mac[0])
3866 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3867 continue;
3868 /* for ipv4 data to be valid, only first byte of mask is set */
3869 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3870 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3871 ARRAY_SIZE(tcf.dst_ip)))
3872 continue;
3873 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3874 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3875 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3876 sizeof(cfilter.ip.v6.src_ip6)))
3877 continue;
3878 if (mask.vlan_id)
3879 if (cfilter.vlan_id != cf->vlan_id)
3880 continue;
3881
3882 hlist_del(&cf->cloud_node);
3883 kfree(cf);
3884 vf->num_cloud_filters--;
3885 }
3886
3887 err:
3888 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3889 aq_ret);
3890 }
3891
3892 /**
3893 * i40e_vc_add_cloud_filter
3894 * @vf: pointer to the VF info
3895 * @msg: pointer to the msg buffer
3896 *
3897 * This function adds a cloud filter programmed as TC filter for ADq
3898 **/
i40e_vc_add_cloud_filter(struct i40e_vf * vf,u8 * msg)3899 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3900 {
3901 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3902 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3903 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3904 struct i40e_cloud_filter *cfilter = NULL;
3905 struct i40e_pf *pf = vf->pf;
3906 struct i40e_vsi *vsi = NULL;
3907 int aq_ret = 0;
3908 int i;
3909
3910 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3911 aq_ret = -EINVAL;
3912 goto err_out;
3913 }
3914
3915 if (!vf->adq_enabled) {
3916 dev_info(&pf->pdev->dev,
3917 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3918 vf->vf_id);
3919 aq_ret = -EINVAL;
3920 goto err_out;
3921 }
3922
3923 if (i40e_validate_cloud_filter(vf, vcf)) {
3924 dev_info(&pf->pdev->dev,
3925 "VF %d: Invalid input/s, can't apply cloud filter\n",
3926 vf->vf_id);
3927 aq_ret = -EINVAL;
3928 goto err_out;
3929 }
3930
3931 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3932 if (!cfilter) {
3933 aq_ret = -ENOMEM;
3934 goto err_out;
3935 }
3936
3937 /* parse destination mac address */
3938 for (i = 0; i < ETH_ALEN; i++)
3939 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3940
3941 /* parse source mac address */
3942 for (i = 0; i < ETH_ALEN; i++)
3943 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3944
3945 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3946 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3947 cfilter->src_port = mask.src_port & tcf.src_port;
3948
3949 switch (vcf->flow_type) {
3950 case VIRTCHNL_TCP_V4_FLOW:
3951 cfilter->n_proto = ETH_P_IP;
3952 if (mask.dst_ip[0] & tcf.dst_ip[0])
3953 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3954 ARRAY_SIZE(tcf.dst_ip));
3955 else if (mask.src_ip[0] & tcf.dst_ip[0])
3956 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3957 ARRAY_SIZE(tcf.dst_ip));
3958 break;
3959 case VIRTCHNL_TCP_V6_FLOW:
3960 cfilter->n_proto = ETH_P_IPV6;
3961 if (mask.dst_ip[3] & tcf.dst_ip[3])
3962 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3963 sizeof(cfilter->ip.v6.dst_ip6));
3964 if (mask.src_ip[3] & tcf.src_ip[3])
3965 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3966 sizeof(cfilter->ip.v6.src_ip6));
3967 break;
3968 default:
3969 /* TC filter can be configured based on different combinations
3970 * and in this case IP is not a part of filter config
3971 */
3972 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3973 vf->vf_id);
3974 }
3975
3976 /* get the VSI to which the TC belongs to */
3977 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3978 cfilter->seid = vsi->seid;
3979 cfilter->flags = vcf->field_flags;
3980
3981 /* Adding cloud filter programmed as TC filter */
3982 if (tcf.dst_port)
3983 aq_ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3984 else
3985 aq_ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3986 if (aq_ret) {
3987 dev_err(&pf->pdev->dev,
3988 "VF %d: Failed to add cloud filter, err %pe aq_err %s\n",
3989 vf->vf_id, ERR_PTR(aq_ret),
3990 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3991 goto err_free;
3992 }
3993
3994 INIT_HLIST_NODE(&cfilter->cloud_node);
3995 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3996 /* release the pointer passing it to the collection */
3997 cfilter = NULL;
3998 vf->num_cloud_filters++;
3999 err_free:
4000 kfree(cfilter);
4001 err_out:
4002 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
4003 aq_ret);
4004 }
4005
4006 /**
4007 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
4008 * @vf: pointer to the VF info
4009 * @msg: pointer to the msg buffer
4010 **/
i40e_vc_add_qch_msg(struct i40e_vf * vf,u8 * msg)4011 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
4012 {
4013 struct virtchnl_tc_info *tci =
4014 (struct virtchnl_tc_info *)msg;
4015 struct i40e_pf *pf = vf->pf;
4016 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4017 int i, adq_request_qps = 0;
4018 int aq_ret = 0;
4019 u64 speed = 0;
4020
4021 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4022 aq_ret = -EINVAL;
4023 goto err;
4024 }
4025
4026 /* ADq cannot be applied if spoof check is ON */
4027 if (vf->spoofchk) {
4028 dev_err(&pf->pdev->dev,
4029 "Spoof check is ON, turn it OFF to enable ADq\n");
4030 aq_ret = -EINVAL;
4031 goto err;
4032 }
4033
4034 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
4035 dev_err(&pf->pdev->dev,
4036 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
4037 vf->vf_id);
4038 aq_ret = -EINVAL;
4039 goto err;
4040 }
4041
4042 /* max number of traffic classes for VF currently capped at 4 */
4043 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
4044 dev_err(&pf->pdev->dev,
4045 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
4046 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
4047 aq_ret = -EINVAL;
4048 goto err;
4049 }
4050
4051 /* validate queues for each TC */
4052 for (i = 0; i < tci->num_tc; i++)
4053 if (!tci->list[i].count ||
4054 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
4055 dev_err(&pf->pdev->dev,
4056 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
4057 vf->vf_id, i, tci->list[i].count,
4058 I40E_DEFAULT_QUEUES_PER_VF);
4059 aq_ret = -EINVAL;
4060 goto err;
4061 }
4062
4063 /* need Max VF queues but already have default number of queues */
4064 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
4065
4066 if (pf->queues_left < adq_request_qps) {
4067 dev_err(&pf->pdev->dev,
4068 "No queues left to allocate to VF %d\n",
4069 vf->vf_id);
4070 aq_ret = -EINVAL;
4071 goto err;
4072 } else {
4073 /* we need to allocate max VF queues to enable ADq so as to
4074 * make sure ADq enabled VF always gets back queues when it
4075 * goes through a reset.
4076 */
4077 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
4078 }
4079
4080 /* get link speed in MB to validate rate limit */
4081 speed = i40e_vc_link_speed2mbps(ls->link_speed);
4082 if (speed == SPEED_UNKNOWN) {
4083 dev_err(&pf->pdev->dev,
4084 "Cannot detect link speed\n");
4085 aq_ret = -EINVAL;
4086 goto err;
4087 }
4088
4089 /* parse data from the queue channel info */
4090 vf->num_tc = tci->num_tc;
4091 for (i = 0; i < vf->num_tc; i++) {
4092 if (tci->list[i].max_tx_rate) {
4093 if (tci->list[i].max_tx_rate > speed) {
4094 dev_err(&pf->pdev->dev,
4095 "Invalid max tx rate %llu specified for VF %d.",
4096 tci->list[i].max_tx_rate,
4097 vf->vf_id);
4098 aq_ret = -EINVAL;
4099 goto err;
4100 } else {
4101 vf->ch[i].max_tx_rate =
4102 tci->list[i].max_tx_rate;
4103 }
4104 }
4105 vf->ch[i].num_qps = tci->list[i].count;
4106 }
4107
4108 /* set this flag only after making sure all inputs are sane */
4109 vf->adq_enabled = true;
4110
4111 /* reset the VF in order to allocate resources */
4112 i40e_vc_reset_vf(vf, true);
4113
4114 return 0;
4115
4116 /* send the response to the VF */
4117 err:
4118 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
4119 aq_ret);
4120 }
4121
4122 /**
4123 * i40e_vc_del_qch_msg
4124 * @vf: pointer to the VF info
4125 * @msg: pointer to the msg buffer
4126 **/
i40e_vc_del_qch_msg(struct i40e_vf * vf,u8 * msg)4127 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
4128 {
4129 struct i40e_pf *pf = vf->pf;
4130 int aq_ret = 0;
4131
4132 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
4133 aq_ret = -EINVAL;
4134 goto err;
4135 }
4136
4137 if (vf->adq_enabled) {
4138 i40e_del_all_cloud_filters(vf);
4139 i40e_del_qch(vf);
4140 vf->adq_enabled = false;
4141 vf->num_tc = 0;
4142 dev_info(&pf->pdev->dev,
4143 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
4144 vf->vf_id);
4145 } else {
4146 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
4147 vf->vf_id);
4148 aq_ret = -EINVAL;
4149 }
4150
4151 /* reset the VF in order to allocate resources */
4152 i40e_vc_reset_vf(vf, true);
4153
4154 return 0;
4155
4156 err:
4157 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
4158 aq_ret);
4159 }
4160
4161 /**
4162 * i40e_vc_process_vf_msg
4163 * @pf: pointer to the PF structure
4164 * @vf_id: source VF id
4165 * @v_opcode: operation code
4166 * @v_retval: unused return value code
4167 * @msg: pointer to the msg buffer
4168 * @msglen: msg length
4169 *
4170 * called from the common aeq/arq handler to
4171 * process request from VF
4172 **/
i40e_vc_process_vf_msg(struct i40e_pf * pf,s16 vf_id,u32 v_opcode,u32 __always_unused v_retval,u8 * msg,u16 msglen)4173 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4174 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4175 {
4176 struct i40e_hw *hw = &pf->hw;
4177 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4178 struct i40e_vf *vf;
4179 int ret;
4180
4181 pf->vf_aq_requests++;
4182 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4183 return -EINVAL;
4184 vf = &(pf->vf[local_vf_id]);
4185
4186 /* Check if VF is disabled. */
4187 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4188 return -EINVAL;
4189
4190 /* perform basic checks on the msg */
4191 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4192
4193 if (ret) {
4194 i40e_vc_send_resp_to_vf(vf, v_opcode, -EINVAL);
4195 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4196 local_vf_id, v_opcode, msglen);
4197 return ret;
4198 }
4199
4200 switch (v_opcode) {
4201 case VIRTCHNL_OP_VERSION:
4202 ret = i40e_vc_get_version_msg(vf, msg);
4203 break;
4204 case VIRTCHNL_OP_GET_VF_RESOURCES:
4205 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4206 i40e_vc_notify_vf_link_state(vf);
4207 break;
4208 case VIRTCHNL_OP_RESET_VF:
4209 i40e_vc_reset_vf(vf, false);
4210 ret = 0;
4211 break;
4212 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4213 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4214 break;
4215 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4216 ret = i40e_vc_config_queues_msg(vf, msg);
4217 break;
4218 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4219 ret = i40e_vc_config_irq_map_msg(vf, msg);
4220 break;
4221 case VIRTCHNL_OP_ENABLE_QUEUES:
4222 ret = i40e_vc_enable_queues_msg(vf, msg);
4223 i40e_vc_notify_vf_link_state(vf);
4224 break;
4225 case VIRTCHNL_OP_DISABLE_QUEUES:
4226 ret = i40e_vc_disable_queues_msg(vf, msg);
4227 break;
4228 case VIRTCHNL_OP_ADD_ETH_ADDR:
4229 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4230 break;
4231 case VIRTCHNL_OP_DEL_ETH_ADDR:
4232 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4233 break;
4234 case VIRTCHNL_OP_ADD_VLAN:
4235 ret = i40e_vc_add_vlan_msg(vf, msg);
4236 break;
4237 case VIRTCHNL_OP_DEL_VLAN:
4238 ret = i40e_vc_remove_vlan_msg(vf, msg);
4239 break;
4240 case VIRTCHNL_OP_GET_STATS:
4241 ret = i40e_vc_get_stats_msg(vf, msg);
4242 break;
4243 case VIRTCHNL_OP_RDMA:
4244 ret = i40e_vc_rdma_msg(vf, msg, msglen);
4245 break;
4246 case VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP:
4247 ret = i40e_vc_rdma_qvmap_msg(vf, msg, true);
4248 break;
4249 case VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP:
4250 ret = i40e_vc_rdma_qvmap_msg(vf, msg, false);
4251 break;
4252 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4253 ret = i40e_vc_config_rss_key(vf, msg);
4254 break;
4255 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4256 ret = i40e_vc_config_rss_lut(vf, msg);
4257 break;
4258 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4259 ret = i40e_vc_get_rss_hena(vf, msg);
4260 break;
4261 case VIRTCHNL_OP_SET_RSS_HENA:
4262 ret = i40e_vc_set_rss_hena(vf, msg);
4263 break;
4264 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4265 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4266 break;
4267 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4268 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4269 break;
4270 case VIRTCHNL_OP_REQUEST_QUEUES:
4271 ret = i40e_vc_request_queues_msg(vf, msg);
4272 break;
4273 case VIRTCHNL_OP_ENABLE_CHANNELS:
4274 ret = i40e_vc_add_qch_msg(vf, msg);
4275 break;
4276 case VIRTCHNL_OP_DISABLE_CHANNELS:
4277 ret = i40e_vc_del_qch_msg(vf, msg);
4278 break;
4279 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4280 ret = i40e_vc_add_cloud_filter(vf, msg);
4281 break;
4282 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4283 ret = i40e_vc_del_cloud_filter(vf, msg);
4284 break;
4285 case VIRTCHNL_OP_UNKNOWN:
4286 default:
4287 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4288 v_opcode, local_vf_id);
4289 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4290 -EOPNOTSUPP);
4291 break;
4292 }
4293
4294 return ret;
4295 }
4296
4297 /**
4298 * i40e_vc_process_vflr_event
4299 * @pf: pointer to the PF structure
4300 *
4301 * called from the vlfr irq handler to
4302 * free up VF resources and state variables
4303 **/
i40e_vc_process_vflr_event(struct i40e_pf * pf)4304 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4305 {
4306 struct i40e_hw *hw = &pf->hw;
4307 u32 reg, reg_idx, bit_idx;
4308 struct i40e_vf *vf;
4309 int vf_id;
4310
4311 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4312 return 0;
4313
4314 /* Re-enable the VFLR interrupt cause here, before looking for which
4315 * VF got reset. Otherwise, if another VF gets a reset while the
4316 * first one is being processed, that interrupt will be lost, and
4317 * that VF will be stuck in reset forever.
4318 */
4319 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4320 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4321 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4322 i40e_flush(hw);
4323
4324 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4325 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4326 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4327 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4328 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4329 vf = &pf->vf[vf_id];
4330 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4331 if (reg & BIT(bit_idx))
4332 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4333 i40e_reset_vf(vf, true);
4334 }
4335
4336 return 0;
4337 }
4338
4339 /**
4340 * i40e_validate_vf
4341 * @pf: the physical function
4342 * @vf_id: VF identifier
4343 *
4344 * Check that the VF is enabled and the VSI exists.
4345 *
4346 * Returns 0 on success, negative on failure
4347 **/
i40e_validate_vf(struct i40e_pf * pf,int vf_id)4348 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4349 {
4350 struct i40e_vsi *vsi;
4351 struct i40e_vf *vf;
4352 int ret = 0;
4353
4354 if (vf_id >= pf->num_alloc_vfs) {
4355 dev_err(&pf->pdev->dev,
4356 "Invalid VF Identifier %d\n", vf_id);
4357 ret = -EINVAL;
4358 goto err_out;
4359 }
4360 vf = &pf->vf[vf_id];
4361 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4362 if (!vsi)
4363 ret = -EINVAL;
4364 err_out:
4365 return ret;
4366 }
4367
4368 /**
4369 * i40e_check_vf_init_timeout
4370 * @vf: the virtual function
4371 *
4372 * Check that the VF's initialization was successfully done and if not
4373 * wait up to 300ms for its finish.
4374 *
4375 * Returns true when VF is initialized, false on timeout
4376 **/
i40e_check_vf_init_timeout(struct i40e_vf * vf)4377 static bool i40e_check_vf_init_timeout(struct i40e_vf *vf)
4378 {
4379 int i;
4380
4381 /* When the VF is resetting wait until it is done.
4382 * It can take up to 200 milliseconds, but wait for
4383 * up to 300 milliseconds to be safe.
4384 */
4385 for (i = 0; i < 15; i++) {
4386 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4387 return true;
4388 msleep(20);
4389 }
4390
4391 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4392 dev_err(&vf->pf->pdev->dev,
4393 "VF %d still in reset. Try again.\n", vf->vf_id);
4394 return false;
4395 }
4396
4397 return true;
4398 }
4399
4400 /**
4401 * i40e_ndo_set_vf_mac
4402 * @netdev: network interface device structure
4403 * @vf_id: VF identifier
4404 * @mac: mac address
4405 *
4406 * program VF mac address
4407 **/
i40e_ndo_set_vf_mac(struct net_device * netdev,int vf_id,u8 * mac)4408 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4409 {
4410 struct i40e_netdev_priv *np = netdev_priv(netdev);
4411 struct i40e_vsi *vsi = np->vsi;
4412 struct i40e_pf *pf = vsi->back;
4413 struct i40e_mac_filter *f;
4414 struct i40e_vf *vf;
4415 int ret = 0;
4416 struct hlist_node *h;
4417 int bkt;
4418
4419 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4420 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4421 return -EAGAIN;
4422 }
4423
4424 /* validate the request */
4425 ret = i40e_validate_vf(pf, vf_id);
4426 if (ret)
4427 goto error_param;
4428
4429 vf = &pf->vf[vf_id];
4430 if (!i40e_check_vf_init_timeout(vf)) {
4431 ret = -EAGAIN;
4432 goto error_param;
4433 }
4434 vsi = pf->vsi[vf->lan_vsi_idx];
4435
4436 if (is_multicast_ether_addr(mac)) {
4437 dev_err(&pf->pdev->dev,
4438 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4439 ret = -EINVAL;
4440 goto error_param;
4441 }
4442
4443 /* Lock once because below invoked function add/del_filter requires
4444 * mac_filter_hash_lock to be held
4445 */
4446 spin_lock_bh(&vsi->mac_filter_hash_lock);
4447
4448 /* delete the temporary mac address */
4449 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4450 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4451
4452 /* Delete all the filters for this VSI - we're going to kill it
4453 * anyway.
4454 */
4455 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4456 __i40e_del_filter(vsi, f);
4457
4458 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4459
4460 /* program mac filter */
4461 if (i40e_sync_vsi_filters(vsi)) {
4462 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4463 ret = -EIO;
4464 goto error_param;
4465 }
4466 ether_addr_copy(vf->default_lan_addr.addr, mac);
4467
4468 if (is_zero_ether_addr(mac)) {
4469 vf->pf_set_mac = false;
4470 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4471 } else {
4472 vf->pf_set_mac = true;
4473 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4474 mac, vf_id);
4475 }
4476
4477 /* Force the VF interface down so it has to bring up with new MAC
4478 * address
4479 */
4480 i40e_vc_reset_vf(vf, true);
4481 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4482
4483 error_param:
4484 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4485 return ret;
4486 }
4487
4488 /**
4489 * i40e_ndo_set_vf_port_vlan
4490 * @netdev: network interface device structure
4491 * @vf_id: VF identifier
4492 * @vlan_id: mac address
4493 * @qos: priority setting
4494 * @vlan_proto: vlan protocol
4495 *
4496 * program VF vlan id and/or qos
4497 **/
i40e_ndo_set_vf_port_vlan(struct net_device * netdev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)4498 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4499 u16 vlan_id, u8 qos, __be16 vlan_proto)
4500 {
4501 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4502 struct i40e_netdev_priv *np = netdev_priv(netdev);
4503 bool allmulti = false, alluni = false;
4504 struct i40e_pf *pf = np->vsi->back;
4505 struct i40e_vsi *vsi;
4506 struct i40e_vf *vf;
4507 int ret = 0;
4508
4509 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4510 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4511 return -EAGAIN;
4512 }
4513
4514 /* validate the request */
4515 ret = i40e_validate_vf(pf, vf_id);
4516 if (ret)
4517 goto error_pvid;
4518
4519 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4520 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4521 ret = -EINVAL;
4522 goto error_pvid;
4523 }
4524
4525 if (vlan_proto != htons(ETH_P_8021Q)) {
4526 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4527 ret = -EPROTONOSUPPORT;
4528 goto error_pvid;
4529 }
4530
4531 vf = &pf->vf[vf_id];
4532 if (!i40e_check_vf_init_timeout(vf)) {
4533 ret = -EAGAIN;
4534 goto error_pvid;
4535 }
4536 vsi = pf->vsi[vf->lan_vsi_idx];
4537
4538 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4539 /* duplicate request, so just return success */
4540 goto error_pvid;
4541
4542 i40e_vlan_stripping_enable(vsi);
4543
4544 /* Locked once because multiple functions below iterate list */
4545 spin_lock_bh(&vsi->mac_filter_hash_lock);
4546
4547 /* Check for condition where there was already a port VLAN ID
4548 * filter set and now it is being deleted by setting it to zero.
4549 * Additionally check for the condition where there was a port
4550 * VLAN but now there is a new and different port VLAN being set.
4551 * Before deleting all the old VLAN filters we must add new ones
4552 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4553 * MAC addresses deleted.
4554 */
4555 if ((!(vlan_id || qos) ||
4556 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4557 vsi->info.pvid) {
4558 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4559 if (ret) {
4560 dev_info(&vsi->back->pdev->dev,
4561 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4562 vsi->back->hw.aq.asq_last_status);
4563 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4564 goto error_pvid;
4565 }
4566 }
4567
4568 if (vsi->info.pvid) {
4569 /* remove all filters on the old VLAN */
4570 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4571 VLAN_VID_MASK));
4572 }
4573
4574 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4575
4576 /* disable promisc modes in case they were enabled */
4577 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4578 allmulti, alluni);
4579 if (ret) {
4580 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4581 goto error_pvid;
4582 }
4583
4584 if (vlan_id || qos)
4585 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4586 else
4587 i40e_vsi_remove_pvid(vsi);
4588 spin_lock_bh(&vsi->mac_filter_hash_lock);
4589
4590 if (vlan_id) {
4591 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4592 vlan_id, qos, vf_id);
4593
4594 /* add new VLAN filter for each MAC */
4595 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4596 if (ret) {
4597 dev_info(&vsi->back->pdev->dev,
4598 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4599 vsi->back->hw.aq.asq_last_status);
4600 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4601 goto error_pvid;
4602 }
4603
4604 /* remove the previously added non-VLAN MAC filters */
4605 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4606 }
4607
4608 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4609
4610 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4611 alluni = true;
4612
4613 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4614 allmulti = true;
4615
4616 /* Schedule the worker thread to take care of applying changes */
4617 i40e_service_event_schedule(vsi->back);
4618
4619 if (ret) {
4620 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4621 goto error_pvid;
4622 }
4623
4624 /* The Port VLAN needs to be saved across resets the same as the
4625 * default LAN MAC address.
4626 */
4627 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4628
4629 i40e_vc_reset_vf(vf, true);
4630 /* During reset the VF got a new VSI, so refresh a pointer. */
4631 vsi = pf->vsi[vf->lan_vsi_idx];
4632
4633 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4634 if (ret) {
4635 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4636 goto error_pvid;
4637 }
4638
4639 ret = 0;
4640
4641 error_pvid:
4642 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4643 return ret;
4644 }
4645
4646 /**
4647 * i40e_ndo_set_vf_bw
4648 * @netdev: network interface device structure
4649 * @vf_id: VF identifier
4650 * @min_tx_rate: Minimum Tx rate
4651 * @max_tx_rate: Maximum Tx rate
4652 *
4653 * configure VF Tx rate
4654 **/
i40e_ndo_set_vf_bw(struct net_device * netdev,int vf_id,int min_tx_rate,int max_tx_rate)4655 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4656 int max_tx_rate)
4657 {
4658 struct i40e_netdev_priv *np = netdev_priv(netdev);
4659 struct i40e_pf *pf = np->vsi->back;
4660 struct i40e_vsi *vsi;
4661 struct i40e_vf *vf;
4662 int ret = 0;
4663
4664 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4665 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4666 return -EAGAIN;
4667 }
4668
4669 /* validate the request */
4670 ret = i40e_validate_vf(pf, vf_id);
4671 if (ret)
4672 goto error;
4673
4674 if (min_tx_rate) {
4675 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4676 min_tx_rate, vf_id);
4677 ret = -EINVAL;
4678 goto error;
4679 }
4680
4681 vf = &pf->vf[vf_id];
4682 if (!i40e_check_vf_init_timeout(vf)) {
4683 ret = -EAGAIN;
4684 goto error;
4685 }
4686 vsi = pf->vsi[vf->lan_vsi_idx];
4687
4688 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4689 if (ret)
4690 goto error;
4691
4692 vf->tx_rate = max_tx_rate;
4693 error:
4694 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4695 return ret;
4696 }
4697
4698 /**
4699 * i40e_ndo_get_vf_config
4700 * @netdev: network interface device structure
4701 * @vf_id: VF identifier
4702 * @ivi: VF configuration structure
4703 *
4704 * return VF configuration
4705 **/
i40e_ndo_get_vf_config(struct net_device * netdev,int vf_id,struct ifla_vf_info * ivi)4706 int i40e_ndo_get_vf_config(struct net_device *netdev,
4707 int vf_id, struct ifla_vf_info *ivi)
4708 {
4709 struct i40e_netdev_priv *np = netdev_priv(netdev);
4710 struct i40e_vsi *vsi = np->vsi;
4711 struct i40e_pf *pf = vsi->back;
4712 struct i40e_vf *vf;
4713 int ret = 0;
4714
4715 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4716 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4717 return -EAGAIN;
4718 }
4719
4720 /* validate the request */
4721 ret = i40e_validate_vf(pf, vf_id);
4722 if (ret)
4723 goto error_param;
4724
4725 vf = &pf->vf[vf_id];
4726 /* first vsi is always the LAN vsi */
4727 vsi = pf->vsi[vf->lan_vsi_idx];
4728 if (!vsi) {
4729 ret = -ENOENT;
4730 goto error_param;
4731 }
4732
4733 ivi->vf = vf_id;
4734
4735 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4736
4737 ivi->max_tx_rate = vf->tx_rate;
4738 ivi->min_tx_rate = 0;
4739 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
4740 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
4741 I40E_VLAN_PRIORITY_SHIFT;
4742 if (vf->link_forced == false)
4743 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4744 else if (vf->link_up == true)
4745 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4746 else
4747 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4748 ivi->spoofchk = vf->spoofchk;
4749 ivi->trusted = vf->trusted;
4750 ret = 0;
4751
4752 error_param:
4753 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4754 return ret;
4755 }
4756
4757 /**
4758 * i40e_ndo_set_vf_link_state
4759 * @netdev: network interface device structure
4760 * @vf_id: VF identifier
4761 * @link: required link state
4762 *
4763 * Set the link state of a specified VF, regardless of physical link state
4764 **/
i40e_ndo_set_vf_link_state(struct net_device * netdev,int vf_id,int link)4765 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4766 {
4767 struct i40e_netdev_priv *np = netdev_priv(netdev);
4768 struct i40e_pf *pf = np->vsi->back;
4769 struct i40e_link_status *ls = &pf->hw.phy.link_info;
4770 struct virtchnl_pf_event pfe;
4771 struct i40e_hw *hw = &pf->hw;
4772 struct i40e_vsi *vsi;
4773 unsigned long q_map;
4774 struct i40e_vf *vf;
4775 int abs_vf_id;
4776 int ret = 0;
4777 int tmp;
4778
4779 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4780 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4781 return -EAGAIN;
4782 }
4783
4784 /* validate the request */
4785 if (vf_id >= pf->num_alloc_vfs) {
4786 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4787 ret = -EINVAL;
4788 goto error_out;
4789 }
4790
4791 vf = &pf->vf[vf_id];
4792 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4793
4794 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4795 pfe.severity = PF_EVENT_SEVERITY_INFO;
4796
4797 switch (link) {
4798 case IFLA_VF_LINK_STATE_AUTO:
4799 vf->link_forced = false;
4800 vf->is_disabled_from_host = false;
4801 /* reset needed to reinit VF resources */
4802 i40e_vc_reset_vf(vf, true);
4803 i40e_set_vf_link_state(vf, &pfe, ls);
4804 break;
4805 case IFLA_VF_LINK_STATE_ENABLE:
4806 vf->link_forced = true;
4807 vf->link_up = true;
4808 vf->is_disabled_from_host = false;
4809 /* reset needed to reinit VF resources */
4810 i40e_vc_reset_vf(vf, true);
4811 i40e_set_vf_link_state(vf, &pfe, ls);
4812 break;
4813 case IFLA_VF_LINK_STATE_DISABLE:
4814 vf->link_forced = true;
4815 vf->link_up = false;
4816 i40e_set_vf_link_state(vf, &pfe, ls);
4817
4818 vsi = pf->vsi[vf->lan_vsi_idx];
4819 q_map = BIT(vsi->num_queue_pairs) - 1;
4820
4821 vf->is_disabled_from_host = true;
4822
4823 /* Try to stop both Tx&Rx rings even if one of the calls fails
4824 * to ensure we stop the rings even in case of errors.
4825 * If any of them returns with an error then the first
4826 * error that occurred will be returned.
4827 */
4828 tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false);
4829 ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false);
4830
4831 ret = tmp ? tmp : ret;
4832 break;
4833 default:
4834 ret = -EINVAL;
4835 goto error_out;
4836 }
4837 /* Notify the VF of its new link state */
4838 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4839 0, (u8 *)&pfe, sizeof(pfe), NULL);
4840
4841 error_out:
4842 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4843 return ret;
4844 }
4845
4846 /**
4847 * i40e_ndo_set_vf_spoofchk
4848 * @netdev: network interface device structure
4849 * @vf_id: VF identifier
4850 * @enable: flag to enable or disable feature
4851 *
4852 * Enable or disable VF spoof checking
4853 **/
i40e_ndo_set_vf_spoofchk(struct net_device * netdev,int vf_id,bool enable)4854 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4855 {
4856 struct i40e_netdev_priv *np = netdev_priv(netdev);
4857 struct i40e_vsi *vsi = np->vsi;
4858 struct i40e_pf *pf = vsi->back;
4859 struct i40e_vsi_context ctxt;
4860 struct i40e_hw *hw = &pf->hw;
4861 struct i40e_vf *vf;
4862 int ret = 0;
4863
4864 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4865 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4866 return -EAGAIN;
4867 }
4868
4869 /* validate the request */
4870 if (vf_id >= pf->num_alloc_vfs) {
4871 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4872 ret = -EINVAL;
4873 goto out;
4874 }
4875
4876 vf = &(pf->vf[vf_id]);
4877 if (!i40e_check_vf_init_timeout(vf)) {
4878 ret = -EAGAIN;
4879 goto out;
4880 }
4881
4882 if (enable == vf->spoofchk)
4883 goto out;
4884
4885 vf->spoofchk = enable;
4886 memset(&ctxt, 0, sizeof(ctxt));
4887 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4888 ctxt.pf_num = pf->hw.pf_id;
4889 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4890 if (enable)
4891 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4892 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4893 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4894 if (ret) {
4895 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4896 ret);
4897 ret = -EIO;
4898 }
4899 out:
4900 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4901 return ret;
4902 }
4903
4904 /**
4905 * i40e_ndo_set_vf_trust
4906 * @netdev: network interface device structure of the pf
4907 * @vf_id: VF identifier
4908 * @setting: trust setting
4909 *
4910 * Enable or disable VF trust setting
4911 **/
i40e_ndo_set_vf_trust(struct net_device * netdev,int vf_id,bool setting)4912 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4913 {
4914 struct i40e_netdev_priv *np = netdev_priv(netdev);
4915 struct i40e_pf *pf = np->vsi->back;
4916 struct i40e_vf *vf;
4917 int ret = 0;
4918
4919 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4920 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4921 return -EAGAIN;
4922 }
4923
4924 /* validate the request */
4925 if (vf_id >= pf->num_alloc_vfs) {
4926 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4927 ret = -EINVAL;
4928 goto out;
4929 }
4930
4931 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4932 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4933 ret = -EINVAL;
4934 goto out;
4935 }
4936
4937 vf = &pf->vf[vf_id];
4938
4939 if (setting == vf->trusted)
4940 goto out;
4941
4942 vf->trusted = setting;
4943
4944 /* request PF to sync mac/vlan filters for the VF */
4945 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
4946 pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
4947
4948 i40e_vc_reset_vf(vf, true);
4949 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4950 vf_id, setting ? "" : "un");
4951
4952 if (vf->adq_enabled) {
4953 if (!vf->trusted) {
4954 dev_info(&pf->pdev->dev,
4955 "VF %u no longer Trusted, deleting all cloud filters\n",
4956 vf_id);
4957 i40e_del_all_cloud_filters(vf);
4958 }
4959 }
4960
4961 out:
4962 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4963 return ret;
4964 }
4965
4966 /**
4967 * i40e_get_vf_stats - populate some stats for the VF
4968 * @netdev: the netdev of the PF
4969 * @vf_id: the host OS identifier (0-127)
4970 * @vf_stats: pointer to the OS memory to be initialized
4971 */
i40e_get_vf_stats(struct net_device * netdev,int vf_id,struct ifla_vf_stats * vf_stats)4972 int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4973 struct ifla_vf_stats *vf_stats)
4974 {
4975 struct i40e_netdev_priv *np = netdev_priv(netdev);
4976 struct i40e_pf *pf = np->vsi->back;
4977 struct i40e_eth_stats *stats;
4978 struct i40e_vsi *vsi;
4979 struct i40e_vf *vf;
4980
4981 /* validate the request */
4982 if (i40e_validate_vf(pf, vf_id))
4983 return -EINVAL;
4984
4985 vf = &pf->vf[vf_id];
4986 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4987 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4988 return -EBUSY;
4989 }
4990
4991 vsi = pf->vsi[vf->lan_vsi_idx];
4992 if (!vsi)
4993 return -EINVAL;
4994
4995 i40e_update_eth_stats(vsi);
4996 stats = &vsi->eth_stats;
4997
4998 memset(vf_stats, 0, sizeof(*vf_stats));
4999
5000 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
5001 stats->rx_multicast;
5002 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
5003 stats->tx_multicast;
5004 vf_stats->rx_bytes = stats->rx_bytes;
5005 vf_stats->tx_bytes = stats->tx_bytes;
5006 vf_stats->broadcast = stats->rx_broadcast;
5007 vf_stats->multicast = stats->rx_multicast;
5008 vf_stats->rx_dropped = stats->rx_discards;
5009 vf_stats->tx_dropped = stats->tx_discards;
5010
5011 return 0;
5012 }
5013