1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4 #include "i40e.h"
5
6 /*********************notification routines***********************/
7
8 /**
9 * i40e_vc_vf_broadcast
10 * @pf: pointer to the PF structure
11 * @v_opcode: operation code
12 * @v_retval: return value
13 * @msg: pointer to the msg buffer
14 * @msglen: msg length
15 *
16 * send a message to all VFs on a given PF
17 **/
i40e_vc_vf_broadcast(struct i40e_pf * pf,enum virtchnl_ops v_opcode,i40e_status v_retval,u8 * msg,u16 msglen)18 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
19 enum virtchnl_ops v_opcode,
20 i40e_status v_retval, u8 *msg,
21 u16 msglen)
22 {
23 struct i40e_hw *hw = &pf->hw;
24 struct i40e_vf *vf = pf->vf;
25 int i;
26
27 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
28 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
29 /* Not all vfs are enabled so skip the ones that are not */
30 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
31 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
32 continue;
33
34 /* Ignore return value on purpose - a given VF may fail, but
35 * we need to keep going and send to all of them
36 */
37 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
38 msg, msglen, NULL);
39 }
40 }
41
42 /**
43 * i40e_vc_notify_vf_link_state
44 * @vf: pointer to the VF structure
45 *
46 * send a link status message to a single VF
47 **/
i40e_vc_notify_vf_link_state(struct i40e_vf * vf)48 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
49 {
50 struct virtchnl_pf_event pfe;
51 struct i40e_pf *pf = vf->pf;
52 struct i40e_hw *hw = &pf->hw;
53 struct i40e_link_status *ls = &pf->hw.phy.link_info;
54 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
55
56 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
57 pfe.severity = PF_EVENT_SEVERITY_INFO;
58 if (vf->link_forced) {
59 pfe.event_data.link_event.link_status = vf->link_up;
60 pfe.event_data.link_event.link_speed =
61 (vf->link_up ? VIRTCHNL_LINK_SPEED_40GB : 0);
62 } else {
63 pfe.event_data.link_event.link_status =
64 ls->link_info & I40E_AQ_LINK_UP;
65 pfe.event_data.link_event.link_speed =
66 i40e_virtchnl_link_speed(ls->link_speed);
67 }
68 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
69 0, (u8 *)&pfe, sizeof(pfe), NULL);
70 }
71
72 /**
73 * i40e_vc_notify_link_state
74 * @pf: pointer to the PF structure
75 *
76 * send a link status message to all VFs on a given PF
77 **/
i40e_vc_notify_link_state(struct i40e_pf * pf)78 void i40e_vc_notify_link_state(struct i40e_pf *pf)
79 {
80 int i;
81
82 for (i = 0; i < pf->num_alloc_vfs; i++)
83 i40e_vc_notify_vf_link_state(&pf->vf[i]);
84 }
85
86 /**
87 * i40e_vc_notify_reset
88 * @pf: pointer to the PF structure
89 *
90 * indicate a pending reset to all VFs on a given PF
91 **/
i40e_vc_notify_reset(struct i40e_pf * pf)92 void i40e_vc_notify_reset(struct i40e_pf *pf)
93 {
94 struct virtchnl_pf_event pfe;
95
96 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
97 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
98 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
99 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
100 }
101
102 #ifdef CONFIG_PCI_IOV
i40e_restore_all_vfs_msi_state(struct pci_dev * pdev)103 void i40e_restore_all_vfs_msi_state(struct pci_dev *pdev)
104 {
105 u16 vf_id;
106 u16 pos;
107
108 /* Continue only if this is a PF */
109 if (!pdev->is_physfn)
110 return;
111
112 if (!pci_num_vf(pdev))
113 return;
114
115 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
116 if (pos) {
117 struct pci_dev *vf_dev = NULL;
118
119 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
120 while ((vf_dev = pci_get_device(pdev->vendor, vf_id, vf_dev))) {
121 if (vf_dev->is_virtfn && vf_dev->physfn == pdev)
122 pci_restore_msi_state(vf_dev);
123 }
124 }
125 }
126 #endif /* CONFIG_PCI_IOV */
127
128 /**
129 * i40e_vc_notify_vf_reset
130 * @vf: pointer to the VF structure
131 *
132 * indicate a pending reset to the given VF
133 **/
i40e_vc_notify_vf_reset(struct i40e_vf * vf)134 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
135 {
136 struct virtchnl_pf_event pfe;
137 int abs_vf_id;
138
139 /* validate the request */
140 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
141 return;
142
143 /* verify if the VF is in either init or active before proceeding */
144 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
145 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
146 return;
147
148 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
149
150 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
151 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
152 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
153 0, (u8 *)&pfe,
154 sizeof(struct virtchnl_pf_event), NULL);
155 }
156 /***********************misc routines*****************************/
157
158 /**
159 * i40e_vc_reset_vf
160 * @vf: pointer to the VF info
161 * @notify_vf: notify vf about reset or not
162 * Reset VF handler.
163 **/
i40e_vc_reset_vf(struct i40e_vf * vf,bool notify_vf)164 static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
165 {
166 struct i40e_pf *pf = vf->pf;
167 int i;
168
169 if (notify_vf)
170 i40e_vc_notify_vf_reset(vf);
171
172 /* We want to ensure that an actual reset occurs initiated after this
173 * function was called. However, we do not want to wait forever, so
174 * we'll give a reasonable time and print a message if we failed to
175 * ensure a reset.
176 */
177 for (i = 0; i < 20; i++) {
178 /* If PF is in VFs releasing state reset VF is impossible,
179 * so leave it.
180 */
181 if (test_bit(__I40E_VFS_RELEASING, pf->state))
182 return;
183 if (i40e_reset_vf(vf, false))
184 return;
185 usleep_range(10000, 20000);
186 }
187
188 if (notify_vf)
189 dev_warn(&vf->pf->pdev->dev,
190 "Failed to initiate reset for VF %d after 200 milliseconds\n",
191 vf->vf_id);
192 else
193 dev_dbg(&vf->pf->pdev->dev,
194 "Failed to initiate reset for VF %d after 200 milliseconds\n",
195 vf->vf_id);
196 }
197
198 /**
199 * i40e_vc_isvalid_vsi_id
200 * @vf: pointer to the VF info
201 * @vsi_id: VF relative VSI id
202 *
203 * check for the valid VSI id
204 **/
i40e_vc_isvalid_vsi_id(struct i40e_vf * vf,u16 vsi_id)205 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
206 {
207 struct i40e_pf *pf = vf->pf;
208 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
209
210 return (vsi && (vsi->vf_id == vf->vf_id));
211 }
212
213 /**
214 * i40e_vc_isvalid_queue_id
215 * @vf: pointer to the VF info
216 * @vsi_id: vsi id
217 * @qid: vsi relative queue id
218 *
219 * check for the valid queue id
220 **/
i40e_vc_isvalid_queue_id(struct i40e_vf * vf,u16 vsi_id,u16 qid)221 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
222 u16 qid)
223 {
224 struct i40e_pf *pf = vf->pf;
225 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
226
227 return (vsi && (qid < vsi->alloc_queue_pairs));
228 }
229
230 /**
231 * i40e_vc_isvalid_vector_id
232 * @vf: pointer to the VF info
233 * @vector_id: VF relative vector id
234 *
235 * check for the valid vector id
236 **/
i40e_vc_isvalid_vector_id(struct i40e_vf * vf,u32 vector_id)237 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
238 {
239 struct i40e_pf *pf = vf->pf;
240
241 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
242 }
243
244 /***********************vf resource mgmt routines*****************/
245
246 /**
247 * i40e_vc_get_pf_queue_id
248 * @vf: pointer to the VF info
249 * @vsi_id: id of VSI as provided by the FW
250 * @vsi_queue_id: vsi relative queue id
251 *
252 * return PF relative queue id
253 **/
i40e_vc_get_pf_queue_id(struct i40e_vf * vf,u16 vsi_id,u8 vsi_queue_id)254 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
255 u8 vsi_queue_id)
256 {
257 struct i40e_pf *pf = vf->pf;
258 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
259 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
260
261 if (!vsi)
262 return pf_queue_id;
263
264 if (le16_to_cpu(vsi->info.mapping_flags) &
265 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
266 pf_queue_id =
267 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
268 else
269 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
270 vsi_queue_id;
271
272 return pf_queue_id;
273 }
274
275 /**
276 * i40e_get_real_pf_qid
277 * @vf: pointer to the VF info
278 * @vsi_id: vsi id
279 * @queue_id: queue number
280 *
281 * wrapper function to get pf_queue_id handling ADq code as well
282 **/
i40e_get_real_pf_qid(struct i40e_vf * vf,u16 vsi_id,u16 queue_id)283 static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
284 {
285 int i;
286
287 if (vf->adq_enabled) {
288 /* Although VF considers all the queues(can be 1 to 16) as its
289 * own but they may actually belong to different VSIs(up to 4).
290 * We need to find which queues belongs to which VSI.
291 */
292 for (i = 0; i < vf->num_tc; i++) {
293 if (queue_id < vf->ch[i].num_qps) {
294 vsi_id = vf->ch[i].vsi_id;
295 break;
296 }
297 /* find right queue id which is relative to a
298 * given VSI.
299 */
300 queue_id -= vf->ch[i].num_qps;
301 }
302 }
303
304 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
305 }
306
307 /**
308 * i40e_config_irq_link_list
309 * @vf: pointer to the VF info
310 * @vsi_id: id of VSI as given by the FW
311 * @vecmap: irq map info
312 *
313 * configure irq link list from the map
314 **/
i40e_config_irq_link_list(struct i40e_vf * vf,u16 vsi_id,struct virtchnl_vector_map * vecmap)315 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
316 struct virtchnl_vector_map *vecmap)
317 {
318 unsigned long linklistmap = 0, tempmap;
319 struct i40e_pf *pf = vf->pf;
320 struct i40e_hw *hw = &pf->hw;
321 u16 vsi_queue_id, pf_queue_id;
322 enum i40e_queue_type qtype;
323 u16 next_q, vector_id, size;
324 u32 reg, reg_idx;
325 u16 itr_idx = 0;
326
327 vector_id = vecmap->vector_id;
328 /* setup the head */
329 if (0 == vector_id)
330 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
331 else
332 reg_idx = I40E_VPINT_LNKLSTN(
333 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
334 (vector_id - 1));
335
336 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
337 /* Special case - No queues mapped on this vector */
338 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
339 goto irq_list_done;
340 }
341 tempmap = vecmap->rxq_map;
342 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
343 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
344 vsi_queue_id));
345 }
346
347 tempmap = vecmap->txq_map;
348 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
349 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
350 vsi_queue_id + 1));
351 }
352
353 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
354 next_q = find_first_bit(&linklistmap, size);
355 if (unlikely(next_q == size))
356 goto irq_list_done;
357
358 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
359 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
360 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
361 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
362
363 wr32(hw, reg_idx, reg);
364
365 while (next_q < size) {
366 switch (qtype) {
367 case I40E_QUEUE_TYPE_RX:
368 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
369 itr_idx = vecmap->rxitr_idx;
370 break;
371 case I40E_QUEUE_TYPE_TX:
372 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
373 itr_idx = vecmap->txitr_idx;
374 break;
375 default:
376 break;
377 }
378
379 next_q = find_next_bit(&linklistmap, size, next_q + 1);
380 if (next_q < size) {
381 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
382 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
383 pf_queue_id = i40e_get_real_pf_qid(vf,
384 vsi_id,
385 vsi_queue_id);
386 } else {
387 pf_queue_id = I40E_QUEUE_END_OF_LIST;
388 qtype = 0;
389 }
390
391 /* format for the RQCTL & TQCTL regs is same */
392 reg = (vector_id) |
393 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
394 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
395 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
396 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
397 wr32(hw, reg_idx, reg);
398 }
399
400 /* if the vf is running in polling mode and using interrupt zero,
401 * need to disable auto-mask on enabling zero interrupt for VFs.
402 */
403 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
404 (vector_id == 0)) {
405 reg = rd32(hw, I40E_GLINT_CTL);
406 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
407 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
408 wr32(hw, I40E_GLINT_CTL, reg);
409 }
410 }
411
412 irq_list_done:
413 i40e_flush(hw);
414 }
415
416 /**
417 * i40e_release_iwarp_qvlist
418 * @vf: pointer to the VF.
419 *
420 **/
i40e_release_iwarp_qvlist(struct i40e_vf * vf)421 static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
422 {
423 struct i40e_pf *pf = vf->pf;
424 struct virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
425 u32 msix_vf;
426 u32 i;
427
428 if (!vf->qvlist_info)
429 return;
430
431 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
432 for (i = 0; i < qvlist_info->num_vectors; i++) {
433 struct virtchnl_iwarp_qv_info *qv_info;
434 u32 next_q_index, next_q_type;
435 struct i40e_hw *hw = &pf->hw;
436 u32 v_idx, reg_idx, reg;
437
438 qv_info = &qvlist_info->qv_info[i];
439 if (!qv_info)
440 continue;
441 v_idx = qv_info->v_idx;
442 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
443 /* Figure out the queue after CEQ and make that the
444 * first queue.
445 */
446 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
447 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
448 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
449 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
450 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
451 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
452
453 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
454 reg = (next_q_index &
455 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
456 (next_q_type <<
457 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
458
459 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
460 }
461 }
462 kfree(vf->qvlist_info);
463 vf->qvlist_info = NULL;
464 }
465
466 /**
467 * i40e_config_iwarp_qvlist
468 * @vf: pointer to the VF info
469 * @qvlist_info: queue and vector list
470 *
471 * Return 0 on success or < 0 on error
472 **/
i40e_config_iwarp_qvlist(struct i40e_vf * vf,struct virtchnl_iwarp_qvlist_info * qvlist_info)473 static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
474 struct virtchnl_iwarp_qvlist_info *qvlist_info)
475 {
476 struct i40e_pf *pf = vf->pf;
477 struct i40e_hw *hw = &pf->hw;
478 struct virtchnl_iwarp_qv_info *qv_info;
479 u32 v_idx, i, reg_idx, reg;
480 u32 next_q_idx, next_q_type;
481 u32 msix_vf;
482 int ret = 0;
483
484 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
485
486 if (qvlist_info->num_vectors > msix_vf) {
487 dev_warn(&pf->pdev->dev,
488 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
489 qvlist_info->num_vectors,
490 msix_vf);
491 ret = -EINVAL;
492 goto err_out;
493 }
494
495 kfree(vf->qvlist_info);
496 vf->qvlist_info = kzalloc(struct_size(vf->qvlist_info, qv_info,
497 qvlist_info->num_vectors - 1),
498 GFP_KERNEL);
499 if (!vf->qvlist_info) {
500 ret = -ENOMEM;
501 goto err_out;
502 }
503 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
504
505 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
506 for (i = 0; i < qvlist_info->num_vectors; i++) {
507 qv_info = &qvlist_info->qv_info[i];
508 if (!qv_info)
509 continue;
510
511 /* Validate vector id belongs to this vf */
512 if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) {
513 ret = -EINVAL;
514 goto err_free;
515 }
516
517 v_idx = qv_info->v_idx;
518
519 vf->qvlist_info->qv_info[i] = *qv_info;
520
521 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
522 /* We might be sharing the interrupt, so get the first queue
523 * index and type, push it down the list by adding the new
524 * queue on top. Also link it with the new queue in CEQCTL.
525 */
526 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
527 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
528 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
529 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
530 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
531
532 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
533 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
534 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
535 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
536 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
537 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
538 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
539 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
540
541 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
542 reg = (qv_info->ceq_idx &
543 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
544 (I40E_QUEUE_TYPE_PE_CEQ <<
545 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
546 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
547 }
548
549 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
550 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
551 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
552 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
553
554 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
555 }
556 }
557
558 return 0;
559 err_free:
560 kfree(vf->qvlist_info);
561 vf->qvlist_info = NULL;
562 err_out:
563 return ret;
564 }
565
566 /**
567 * i40e_config_vsi_tx_queue
568 * @vf: pointer to the VF info
569 * @vsi_id: id of VSI as provided by the FW
570 * @vsi_queue_id: vsi relative queue index
571 * @info: config. info
572 *
573 * configure tx queue
574 **/
i40e_config_vsi_tx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_txq_info * info)575 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
576 u16 vsi_queue_id,
577 struct virtchnl_txq_info *info)
578 {
579 struct i40e_pf *pf = vf->pf;
580 struct i40e_hw *hw = &pf->hw;
581 struct i40e_hmc_obj_txq tx_ctx;
582 struct i40e_vsi *vsi;
583 u16 pf_queue_id;
584 u32 qtx_ctl;
585 int ret = 0;
586
587 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
588 ret = -ENOENT;
589 goto error_context;
590 }
591 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
592 vsi = i40e_find_vsi_from_id(pf, vsi_id);
593 if (!vsi) {
594 ret = -ENOENT;
595 goto error_context;
596 }
597
598 /* clear the context structure first */
599 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
600
601 /* only set the required fields */
602 tx_ctx.base = info->dma_ring_addr / 128;
603 tx_ctx.qlen = info->ring_len;
604 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
605 tx_ctx.rdylist_act = 0;
606 tx_ctx.head_wb_ena = info->headwb_enabled;
607 tx_ctx.head_wb_addr = info->dma_headwb_addr;
608
609 /* clear the context in the HMC */
610 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
611 if (ret) {
612 dev_err(&pf->pdev->dev,
613 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
614 pf_queue_id, ret);
615 ret = -ENOENT;
616 goto error_context;
617 }
618
619 /* set the context in the HMC */
620 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
621 if (ret) {
622 dev_err(&pf->pdev->dev,
623 "Failed to set VF LAN Tx queue context %d error: %d\n",
624 pf_queue_id, ret);
625 ret = -ENOENT;
626 goto error_context;
627 }
628
629 /* associate this queue with the PCI VF function */
630 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
631 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
632 & I40E_QTX_CTL_PF_INDX_MASK);
633 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
634 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
635 & I40E_QTX_CTL_VFVM_INDX_MASK);
636 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
637 i40e_flush(hw);
638
639 error_context:
640 return ret;
641 }
642
643 /**
644 * i40e_config_vsi_rx_queue
645 * @vf: pointer to the VF info
646 * @vsi_id: id of VSI as provided by the FW
647 * @vsi_queue_id: vsi relative queue index
648 * @info: config. info
649 *
650 * configure rx queue
651 **/
i40e_config_vsi_rx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_rxq_info * info)652 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
653 u16 vsi_queue_id,
654 struct virtchnl_rxq_info *info)
655 {
656 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
657 struct i40e_pf *pf = vf->pf;
658 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
659 struct i40e_hw *hw = &pf->hw;
660 struct i40e_hmc_obj_rxq rx_ctx;
661 int ret = 0;
662
663 /* clear the context structure first */
664 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
665
666 /* only set the required fields */
667 rx_ctx.base = info->dma_ring_addr / 128;
668 rx_ctx.qlen = info->ring_len;
669
670 if (info->splithdr_enabled) {
671 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
672 I40E_RX_SPLIT_IP |
673 I40E_RX_SPLIT_TCP_UDP |
674 I40E_RX_SPLIT_SCTP;
675 /* header length validation */
676 if (info->hdr_size > ((2 * 1024) - 64)) {
677 ret = -EINVAL;
678 goto error_param;
679 }
680 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
681
682 /* set split mode 10b */
683 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
684 }
685
686 /* databuffer length validation */
687 if (info->databuffer_size > ((16 * 1024) - 128)) {
688 ret = -EINVAL;
689 goto error_param;
690 }
691 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
692
693 /* max pkt. length validation */
694 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
695 ret = -EINVAL;
696 goto error_param;
697 }
698 rx_ctx.rxmax = info->max_pkt_size;
699
700 /* if port VLAN is configured increase the max packet size */
701 if (vsi->info.pvid)
702 rx_ctx.rxmax += VLAN_HLEN;
703
704 /* enable 32bytes desc always */
705 rx_ctx.dsize = 1;
706
707 /* default values */
708 rx_ctx.lrxqthresh = 1;
709 rx_ctx.crcstrip = 1;
710 rx_ctx.prefena = 1;
711 rx_ctx.l2tsel = 1;
712
713 /* clear the context in the HMC */
714 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
715 if (ret) {
716 dev_err(&pf->pdev->dev,
717 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
718 pf_queue_id, ret);
719 ret = -ENOENT;
720 goto error_param;
721 }
722
723 /* set the context in the HMC */
724 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
725 if (ret) {
726 dev_err(&pf->pdev->dev,
727 "Failed to set VF LAN Rx queue context %d error: %d\n",
728 pf_queue_id, ret);
729 ret = -ENOENT;
730 goto error_param;
731 }
732
733 error_param:
734 return ret;
735 }
736
737 /**
738 * i40e_alloc_vsi_res
739 * @vf: pointer to the VF info
740 * @idx: VSI index, applies only for ADq mode, zero otherwise
741 *
742 * alloc VF vsi context & resources
743 **/
i40e_alloc_vsi_res(struct i40e_vf * vf,u8 idx)744 static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
745 {
746 struct i40e_mac_filter *f = NULL;
747 struct i40e_pf *pf = vf->pf;
748 struct i40e_vsi *vsi;
749 u64 max_tx_rate = 0;
750 int ret = 0;
751
752 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid,
753 vf->vf_id);
754
755 if (!vsi) {
756 dev_err(&pf->pdev->dev,
757 "add vsi failed for VF %d, aq_err %d\n",
758 vf->vf_id, pf->hw.aq.asq_last_status);
759 ret = -ENOENT;
760 goto error_alloc_vsi_res;
761 }
762
763 if (!idx) {
764 u64 hena = i40e_pf_get_default_rss_hena(pf);
765 u8 broadcast[ETH_ALEN];
766
767 vf->lan_vsi_idx = vsi->idx;
768 vf->lan_vsi_id = vsi->id;
769 /* If the port VLAN has been configured and then the
770 * VF driver was removed then the VSI port VLAN
771 * configuration was destroyed. Check if there is
772 * a port VLAN and restore the VSI configuration if
773 * needed.
774 */
775 if (vf->port_vlan_id)
776 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
777
778 spin_lock_bh(&vsi->mac_filter_hash_lock);
779 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
780 f = i40e_add_mac_filter(vsi,
781 vf->default_lan_addr.addr);
782 if (!f)
783 dev_info(&pf->pdev->dev,
784 "Could not add MAC filter %pM for VF %d\n",
785 vf->default_lan_addr.addr, vf->vf_id);
786 }
787 eth_broadcast_addr(broadcast);
788 f = i40e_add_mac_filter(vsi, broadcast);
789 if (!f)
790 dev_info(&pf->pdev->dev,
791 "Could not allocate VF broadcast filter\n");
792 spin_unlock_bh(&vsi->mac_filter_hash_lock);
793 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
794 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
795 /* program mac filter only for VF VSI */
796 ret = i40e_sync_vsi_filters(vsi);
797 if (ret)
798 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
799 }
800
801 /* storing VSI index and id for ADq and don't apply the mac filter */
802 if (vf->adq_enabled) {
803 vf->ch[idx].vsi_idx = vsi->idx;
804 vf->ch[idx].vsi_id = vsi->id;
805 }
806
807 /* Set VF bandwidth if specified */
808 if (vf->tx_rate) {
809 max_tx_rate = vf->tx_rate;
810 } else if (vf->ch[idx].max_tx_rate) {
811 max_tx_rate = vf->ch[idx].max_tx_rate;
812 }
813
814 if (max_tx_rate) {
815 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
816 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
817 max_tx_rate, 0, NULL);
818 if (ret)
819 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
820 vf->vf_id, ret);
821 }
822
823 error_alloc_vsi_res:
824 return ret;
825 }
826
827 /**
828 * i40e_map_pf_queues_to_vsi
829 * @vf: pointer to the VF info
830 *
831 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
832 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
833 **/
i40e_map_pf_queues_to_vsi(struct i40e_vf * vf)834 static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
835 {
836 struct i40e_pf *pf = vf->pf;
837 struct i40e_hw *hw = &pf->hw;
838 u32 reg, num_tc = 1; /* VF has at least one traffic class */
839 u16 vsi_id, qps;
840 int i, j;
841
842 if (vf->adq_enabled)
843 num_tc = vf->num_tc;
844
845 for (i = 0; i < num_tc; i++) {
846 if (vf->adq_enabled) {
847 qps = vf->ch[i].num_qps;
848 vsi_id = vf->ch[i].vsi_id;
849 } else {
850 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
851 vsi_id = vf->lan_vsi_id;
852 }
853
854 for (j = 0; j < 7; j++) {
855 if (j * 2 >= qps) {
856 /* end of list */
857 reg = 0x07FF07FF;
858 } else {
859 u16 qid = i40e_vc_get_pf_queue_id(vf,
860 vsi_id,
861 j * 2);
862 reg = qid;
863 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
864 (j * 2) + 1);
865 reg |= qid << 16;
866 }
867 i40e_write_rx_ctl(hw,
868 I40E_VSILAN_QTABLE(j, vsi_id),
869 reg);
870 }
871 }
872 }
873
874 /**
875 * i40e_map_pf_to_vf_queues
876 * @vf: pointer to the VF info
877 *
878 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
879 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
880 **/
i40e_map_pf_to_vf_queues(struct i40e_vf * vf)881 static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
882 {
883 struct i40e_pf *pf = vf->pf;
884 struct i40e_hw *hw = &pf->hw;
885 u32 reg, total_qps = 0;
886 u32 qps, num_tc = 1; /* VF has at least one traffic class */
887 u16 vsi_id, qid;
888 int i, j;
889
890 if (vf->adq_enabled)
891 num_tc = vf->num_tc;
892
893 for (i = 0; i < num_tc; i++) {
894 if (vf->adq_enabled) {
895 qps = vf->ch[i].num_qps;
896 vsi_id = vf->ch[i].vsi_id;
897 } else {
898 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
899 vsi_id = vf->lan_vsi_id;
900 }
901
902 for (j = 0; j < qps; j++) {
903 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
904
905 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
906 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
907 reg);
908 total_qps++;
909 }
910 }
911 }
912
913 /**
914 * i40e_enable_vf_mappings
915 * @vf: pointer to the VF info
916 *
917 * enable VF mappings
918 **/
i40e_enable_vf_mappings(struct i40e_vf * vf)919 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
920 {
921 struct i40e_pf *pf = vf->pf;
922 struct i40e_hw *hw = &pf->hw;
923 u32 reg;
924
925 /* Tell the hardware we're using noncontiguous mapping. HW requires
926 * that VF queues be mapped using this method, even when they are
927 * contiguous in real life
928 */
929 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
930 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
931
932 /* enable VF vplan_qtable mappings */
933 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
934 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
935
936 i40e_map_pf_to_vf_queues(vf);
937 i40e_map_pf_queues_to_vsi(vf);
938
939 i40e_flush(hw);
940 }
941
942 /**
943 * i40e_disable_vf_mappings
944 * @vf: pointer to the VF info
945 *
946 * disable VF mappings
947 **/
i40e_disable_vf_mappings(struct i40e_vf * vf)948 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
949 {
950 struct i40e_pf *pf = vf->pf;
951 struct i40e_hw *hw = &pf->hw;
952 int i;
953
954 /* disable qp mappings */
955 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
956 for (i = 0; i < I40E_MAX_VSI_QP; i++)
957 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
958 I40E_QUEUE_END_OF_LIST);
959 i40e_flush(hw);
960 }
961
962 /**
963 * i40e_free_vf_res
964 * @vf: pointer to the VF info
965 *
966 * free VF resources
967 **/
i40e_free_vf_res(struct i40e_vf * vf)968 static void i40e_free_vf_res(struct i40e_vf *vf)
969 {
970 struct i40e_pf *pf = vf->pf;
971 struct i40e_hw *hw = &pf->hw;
972 u32 reg_idx, reg;
973 int i, j, msix_vf;
974
975 /* Start by disabling VF's configuration API to prevent the OS from
976 * accessing the VF's VSI after it's freed / invalidated.
977 */
978 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
979
980 /* It's possible the VF had requeuested more queues than the default so
981 * do the accounting here when we're about to free them.
982 */
983 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
984 pf->queues_left += vf->num_queue_pairs -
985 I40E_DEFAULT_QUEUES_PER_VF;
986 }
987
988 /* free vsi & disconnect it from the parent uplink */
989 if (vf->lan_vsi_idx) {
990 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
991 vf->lan_vsi_idx = 0;
992 vf->lan_vsi_id = 0;
993 }
994
995 /* do the accounting and remove additional ADq VSI's */
996 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
997 for (j = 0; j < vf->num_tc; j++) {
998 /* At this point VSI0 is already released so don't
999 * release it again and only clear their values in
1000 * structure variables
1001 */
1002 if (j)
1003 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
1004 vf->ch[j].vsi_idx = 0;
1005 vf->ch[j].vsi_id = 0;
1006 }
1007 }
1008 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
1009
1010 /* disable interrupts so the VF starts in a known state */
1011 for (i = 0; i < msix_vf; i++) {
1012 /* format is same for both registers */
1013 if (0 == i)
1014 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
1015 else
1016 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
1017 (vf->vf_id))
1018 + (i - 1));
1019 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
1020 i40e_flush(hw);
1021 }
1022
1023 /* clear the irq settings */
1024 for (i = 0; i < msix_vf; i++) {
1025 /* format is same for both registers */
1026 if (0 == i)
1027 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
1028 else
1029 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
1030 (vf->vf_id))
1031 + (i - 1));
1032 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1033 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1034 wr32(hw, reg_idx, reg);
1035 i40e_flush(hw);
1036 }
1037 /* reset some of the state variables keeping track of the resources */
1038 vf->num_queue_pairs = 0;
1039 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1040 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1041 }
1042
1043 /**
1044 * i40e_alloc_vf_res
1045 * @vf: pointer to the VF info
1046 *
1047 * allocate VF resources
1048 **/
i40e_alloc_vf_res(struct i40e_vf * vf)1049 static int i40e_alloc_vf_res(struct i40e_vf *vf)
1050 {
1051 struct i40e_pf *pf = vf->pf;
1052 int total_queue_pairs = 0;
1053 int ret, idx;
1054
1055 if (vf->num_req_queues &&
1056 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1057 pf->num_vf_qps = vf->num_req_queues;
1058 else
1059 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1060
1061 /* allocate hw vsi context & associated resources */
1062 ret = i40e_alloc_vsi_res(vf, 0);
1063 if (ret)
1064 goto error_alloc;
1065 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1066
1067 /* allocate additional VSIs based on tc information for ADq */
1068 if (vf->adq_enabled) {
1069 if (pf->queues_left >=
1070 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1071 /* TC 0 always belongs to VF VSI */
1072 for (idx = 1; idx < vf->num_tc; idx++) {
1073 ret = i40e_alloc_vsi_res(vf, idx);
1074 if (ret)
1075 goto error_alloc;
1076 }
1077 /* send correct number of queues */
1078 total_queue_pairs = I40E_MAX_VF_QUEUES;
1079 } else {
1080 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1081 vf->vf_id);
1082 vf->adq_enabled = false;
1083 }
1084 }
1085
1086 /* We account for each VF to get a default number of queue pairs. If
1087 * the VF has now requested more, we need to account for that to make
1088 * certain we never request more queues than we actually have left in
1089 * HW.
1090 */
1091 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1092 pf->queues_left -=
1093 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1094
1095 if (vf->trusted)
1096 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1097 else
1098 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1099
1100 /* store the total qps number for the runtime
1101 * VF req validation
1102 */
1103 vf->num_queue_pairs = total_queue_pairs;
1104
1105 /* VF is now completely initialized */
1106 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1107
1108 error_alloc:
1109 if (ret)
1110 i40e_free_vf_res(vf);
1111
1112 return ret;
1113 }
1114
1115 #define VF_DEVICE_STATUS 0xAA
1116 #define VF_TRANS_PENDING_MASK 0x20
1117 /**
1118 * i40e_quiesce_vf_pci
1119 * @vf: pointer to the VF structure
1120 *
1121 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1122 * if the transactions never clear.
1123 **/
i40e_quiesce_vf_pci(struct i40e_vf * vf)1124 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1125 {
1126 struct i40e_pf *pf = vf->pf;
1127 struct i40e_hw *hw = &pf->hw;
1128 int vf_abs_id, i;
1129 u32 reg;
1130
1131 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1132
1133 wr32(hw, I40E_PF_PCI_CIAA,
1134 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1135 for (i = 0; i < 100; i++) {
1136 reg = rd32(hw, I40E_PF_PCI_CIAD);
1137 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1138 return 0;
1139 udelay(1);
1140 }
1141 return -EIO;
1142 }
1143
1144 /**
1145 * __i40e_getnum_vf_vsi_vlan_filters
1146 * @vsi: pointer to the vsi
1147 *
1148 * called to get the number of VLANs offloaded on this VF
1149 **/
__i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1150 static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1151 {
1152 struct i40e_mac_filter *f;
1153 u16 num_vlans = 0, bkt;
1154
1155 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1156 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1157 num_vlans++;
1158 }
1159
1160 return num_vlans;
1161 }
1162
1163 /**
1164 * i40e_getnum_vf_vsi_vlan_filters
1165 * @vsi: pointer to the vsi
1166 *
1167 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
1168 **/
i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1169 static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1170 {
1171 int num_vlans;
1172
1173 spin_lock_bh(&vsi->mac_filter_hash_lock);
1174 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1175 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1176
1177 return num_vlans;
1178 }
1179
1180 /**
1181 * i40e_get_vlan_list_sync
1182 * @vsi: pointer to the VSI
1183 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller
1184 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
1185 * This array is allocated here, but has to be freed in caller.
1186 *
1187 * Called to get number of VLANs and VLAN list present in mac_filter_hash.
1188 **/
i40e_get_vlan_list_sync(struct i40e_vsi * vsi,u16 * num_vlans,s16 ** vlan_list)1189 static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
1190 s16 **vlan_list)
1191 {
1192 struct i40e_mac_filter *f;
1193 int i = 0;
1194 int bkt;
1195
1196 spin_lock_bh(&vsi->mac_filter_hash_lock);
1197 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1198 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC);
1199 if (!(*vlan_list))
1200 goto err;
1201
1202 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1203 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1204 continue;
1205 (*vlan_list)[i++] = f->vlan;
1206 }
1207 err:
1208 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1209 }
1210
1211 /**
1212 * i40e_set_vsi_promisc
1213 * @vf: pointer to the VF struct
1214 * @seid: VSI number
1215 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
1216 * for a given VLAN
1217 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
1218 * for a given VLAN
1219 * @vl: List of VLANs - apply filter for given VLANs
1220 * @num_vlans: Number of elements in @vl
1221 **/
1222 static i40e_status
i40e_set_vsi_promisc(struct i40e_vf * vf,u16 seid,bool multi_enable,bool unicast_enable,s16 * vl,u16 num_vlans)1223 i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
1224 bool unicast_enable, s16 *vl, u16 num_vlans)
1225 {
1226 i40e_status aq_ret, aq_tmp = 0;
1227 struct i40e_pf *pf = vf->pf;
1228 struct i40e_hw *hw = &pf->hw;
1229 int i;
1230
1231 /* No VLAN to set promisc on, set on VSI */
1232 if (!num_vlans || !vl) {
1233 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid,
1234 multi_enable,
1235 NULL);
1236 if (aq_ret) {
1237 int aq_err = pf->hw.aq.asq_last_status;
1238
1239 dev_err(&pf->pdev->dev,
1240 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1241 vf->vf_id,
1242 i40e_stat_str(&pf->hw, aq_ret),
1243 i40e_aq_str(&pf->hw, aq_err));
1244
1245 return aq_ret;
1246 }
1247
1248 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid,
1249 unicast_enable,
1250 NULL, true);
1251
1252 if (aq_ret) {
1253 int aq_err = pf->hw.aq.asq_last_status;
1254
1255 dev_err(&pf->pdev->dev,
1256 "VF %d failed to set unicast promiscuous mode err %s aq_err %s\n",
1257 vf->vf_id,
1258 i40e_stat_str(&pf->hw, aq_ret),
1259 i40e_aq_str(&pf->hw, aq_err));
1260 }
1261
1262 return aq_ret;
1263 }
1264
1265 for (i = 0; i < num_vlans; i++) {
1266 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
1267 multi_enable,
1268 vl[i], NULL);
1269 if (aq_ret) {
1270 int aq_err = pf->hw.aq.asq_last_status;
1271
1272 dev_err(&pf->pdev->dev,
1273 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1274 vf->vf_id,
1275 i40e_stat_str(&pf->hw, aq_ret),
1276 i40e_aq_str(&pf->hw, aq_err));
1277
1278 if (!aq_tmp)
1279 aq_tmp = aq_ret;
1280 }
1281
1282 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
1283 unicast_enable,
1284 vl[i], NULL);
1285 if (aq_ret) {
1286 int aq_err = pf->hw.aq.asq_last_status;
1287
1288 dev_err(&pf->pdev->dev,
1289 "VF %d failed to set unicast promiscuous mode err %s aq_err %s\n",
1290 vf->vf_id,
1291 i40e_stat_str(&pf->hw, aq_ret),
1292 i40e_aq_str(&pf->hw, aq_err));
1293
1294 if (!aq_tmp)
1295 aq_tmp = aq_ret;
1296 }
1297 }
1298
1299 if (aq_tmp)
1300 aq_ret = aq_tmp;
1301
1302 return aq_ret;
1303 }
1304
1305 /**
1306 * i40e_config_vf_promiscuous_mode
1307 * @vf: pointer to the VF info
1308 * @vsi_id: VSI id
1309 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1310 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1311 *
1312 * Called from the VF to configure the promiscuous mode of
1313 * VF vsis and from the VF reset path to reset promiscuous mode.
1314 **/
i40e_config_vf_promiscuous_mode(struct i40e_vf * vf,u16 vsi_id,bool allmulti,bool alluni)1315 static i40e_status i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1316 u16 vsi_id,
1317 bool allmulti,
1318 bool alluni)
1319 {
1320 i40e_status aq_ret = I40E_SUCCESS;
1321 struct i40e_pf *pf = vf->pf;
1322 struct i40e_vsi *vsi;
1323 u16 num_vlans;
1324 s16 *vl;
1325
1326 vsi = i40e_find_vsi_from_id(pf, vsi_id);
1327 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1328 return I40E_ERR_PARAM;
1329
1330 if (vf->port_vlan_id) {
1331 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti,
1332 alluni, &vf->port_vlan_id, 1);
1333 return aq_ret;
1334 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1335 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl);
1336
1337 if (!vl)
1338 return I40E_ERR_NO_MEMORY;
1339
1340 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1341 vl, num_vlans);
1342 kfree(vl);
1343 return aq_ret;
1344 }
1345
1346 /* no VLANs to set on, set on VSI */
1347 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1348 NULL, 0);
1349 return aq_ret;
1350 }
1351
1352 /**
1353 * i40e_sync_vfr_reset
1354 * @hw: pointer to hw struct
1355 * @vf_id: VF identifier
1356 *
1357 * Before trigger hardware reset, we need to know if no other process has
1358 * reserved the hardware for any reset operations. This check is done by
1359 * examining the status of the RSTAT1 register used to signal the reset.
1360 **/
i40e_sync_vfr_reset(struct i40e_hw * hw,int vf_id)1361 static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1362 {
1363 u32 reg;
1364 int i;
1365
1366 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1367 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1368 I40E_VFINT_ICR0_ADMINQ_MASK;
1369 if (reg)
1370 return 0;
1371
1372 usleep_range(100, 200);
1373 }
1374
1375 return -EAGAIN;
1376 }
1377
1378 /**
1379 * i40e_trigger_vf_reset
1380 * @vf: pointer to the VF structure
1381 * @flr: VFLR was issued or not
1382 *
1383 * Trigger hardware to start a reset for a particular VF. Expects the caller
1384 * to wait the proper amount of time to allow hardware to reset the VF before
1385 * it cleans up and restores VF functionality.
1386 **/
i40e_trigger_vf_reset(struct i40e_vf * vf,bool flr)1387 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1388 {
1389 struct i40e_pf *pf = vf->pf;
1390 struct i40e_hw *hw = &pf->hw;
1391 u32 reg, reg_idx, bit_idx;
1392 bool vf_active;
1393 u32 radq;
1394
1395 /* warn the VF */
1396 vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1397
1398 /* Disable VF's configuration API during reset. The flag is re-enabled
1399 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1400 * It's normally disabled in i40e_free_vf_res(), but it's safer
1401 * to do it earlier to give some time to finish to any VF config
1402 * functions that may still be running at this point.
1403 */
1404 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1405
1406 /* In the case of a VFLR, the HW has already reset the VF and we
1407 * just need to clean up, so don't hit the VFRTRIG register.
1408 */
1409 if (!flr) {
1410 /* Sync VFR reset before trigger next one */
1411 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1412 I40E_VFINT_ICR0_ADMINQ_MASK;
1413 if (vf_active && !radq)
1414 /* waiting for finish reset by virtual driver */
1415 if (i40e_sync_vfr_reset(hw, vf->vf_id))
1416 dev_info(&pf->pdev->dev,
1417 "Reset VF %d never finished\n",
1418 vf->vf_id);
1419
1420 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1421 * in progress state in rstat1 register.
1422 */
1423 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1424 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1425 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1426 i40e_flush(hw);
1427 }
1428 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1429 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1430 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1431 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1432 i40e_flush(hw);
1433
1434 if (i40e_quiesce_vf_pci(vf))
1435 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1436 vf->vf_id);
1437 }
1438
1439 /**
1440 * i40e_cleanup_reset_vf
1441 * @vf: pointer to the VF structure
1442 *
1443 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1444 * have verified whether the reset is finished properly, and ensure the
1445 * minimum amount of wait time has passed.
1446 **/
i40e_cleanup_reset_vf(struct i40e_vf * vf)1447 static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1448 {
1449 struct i40e_pf *pf = vf->pf;
1450 struct i40e_hw *hw = &pf->hw;
1451 u32 reg;
1452
1453 /* disable promisc modes in case they were enabled */
1454 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1455
1456 /* free VF resources to begin resetting the VSI state */
1457 i40e_free_vf_res(vf);
1458
1459 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1460 * By doing this we allow HW to access VF memory at any point. If we
1461 * did it any sooner, HW could access memory while it was being freed
1462 * in i40e_free_vf_res(), causing an IOMMU fault.
1463 *
1464 * On the other hand, this needs to be done ASAP, because the VF driver
1465 * is waiting for this to happen and may report a timeout. It's
1466 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1467 * it.
1468 */
1469 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1470 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1471 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1472
1473 /* reallocate VF resources to finish resetting the VSI state */
1474 if (!i40e_alloc_vf_res(vf)) {
1475 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1476 i40e_enable_vf_mappings(vf);
1477 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1478 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1479 /* Do not notify the client during VF init */
1480 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1481 &vf->vf_states))
1482 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1483 vf->num_vlan = 0;
1484 }
1485
1486 /* Tell the VF driver the reset is done. This needs to be done only
1487 * after VF has been fully initialized, because the VF driver may
1488 * request resources immediately after setting this flag.
1489 */
1490 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1491 }
1492
1493 /**
1494 * i40e_reset_vf
1495 * @vf: pointer to the VF structure
1496 * @flr: VFLR was issued or not
1497 *
1498 * Returns true if the VF is in reset, resets successfully, or resets
1499 * are disabled and false otherwise.
1500 **/
i40e_reset_vf(struct i40e_vf * vf,bool flr)1501 bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1502 {
1503 struct i40e_pf *pf = vf->pf;
1504 struct i40e_hw *hw = &pf->hw;
1505 bool rsd = false;
1506 u32 reg;
1507 int i;
1508
1509 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1510 return true;
1511
1512 /* Bail out if VFs are disabled. */
1513 if (test_bit(__I40E_VF_DISABLE, pf->state))
1514 return true;
1515
1516 /* If VF is being reset already we don't need to continue. */
1517 if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1518 return true;
1519
1520 i40e_trigger_vf_reset(vf, flr);
1521
1522 /* poll VPGEN_VFRSTAT reg to make sure
1523 * that reset is complete
1524 */
1525 for (i = 0; i < 10; i++) {
1526 /* VF reset requires driver to first reset the VF and then
1527 * poll the status register to make sure that the reset
1528 * completed successfully. Due to internal HW FIFO flushes,
1529 * we must wait 10ms before the register will be valid.
1530 */
1531 usleep_range(10000, 20000);
1532 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1533 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1534 rsd = true;
1535 break;
1536 }
1537 }
1538
1539 if (flr)
1540 usleep_range(10000, 20000);
1541
1542 if (!rsd)
1543 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1544 vf->vf_id);
1545 usleep_range(10000, 20000);
1546
1547 /* On initial reset, we don't have any queues to disable */
1548 if (vf->lan_vsi_idx != 0)
1549 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1550
1551 i40e_cleanup_reset_vf(vf);
1552
1553 i40e_flush(hw);
1554 usleep_range(20000, 40000);
1555 clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states);
1556
1557 return true;
1558 }
1559
1560 /**
1561 * i40e_reset_all_vfs
1562 * @pf: pointer to the PF structure
1563 * @flr: VFLR was issued or not
1564 *
1565 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1566 * VF, then do all the waiting in one chunk, and finally finish restoring each
1567 * VF after the wait. This is useful during PF routines which need to reset
1568 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1569 *
1570 * Returns true if any VFs were reset, and false otherwise.
1571 **/
i40e_reset_all_vfs(struct i40e_pf * pf,bool flr)1572 bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1573 {
1574 struct i40e_hw *hw = &pf->hw;
1575 struct i40e_vf *vf;
1576 int i, v;
1577 u32 reg;
1578
1579 /* If we don't have any VFs, then there is nothing to reset */
1580 if (!pf->num_alloc_vfs)
1581 return false;
1582
1583 /* If VFs have been disabled, there is no need to reset */
1584 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1585 return false;
1586
1587 /* Begin reset on all VFs at once */
1588 for (v = 0; v < pf->num_alloc_vfs; v++) {
1589 vf = &pf->vf[v];
1590 /* If VF is being reset no need to trigger reset again */
1591 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1592 i40e_trigger_vf_reset(&pf->vf[v], flr);
1593 }
1594
1595 /* HW requires some time to make sure it can flush the FIFO for a VF
1596 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1597 * sequence to make sure that it has completed. We'll keep track of
1598 * the VFs using a simple iterator that increments once that VF has
1599 * finished resetting.
1600 */
1601 for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
1602 usleep_range(10000, 20000);
1603
1604 /* Check each VF in sequence, beginning with the VF to fail
1605 * the previous check.
1606 */
1607 while (v < pf->num_alloc_vfs) {
1608 vf = &pf->vf[v];
1609 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
1610 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1611 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1612 break;
1613 }
1614
1615 /* If the current VF has finished resetting, move on
1616 * to the next VF in sequence.
1617 */
1618 v++;
1619 }
1620 }
1621
1622 if (flr)
1623 usleep_range(10000, 20000);
1624
1625 /* Display a warning if at least one VF didn't manage to reset in
1626 * time, but continue on with the operation.
1627 */
1628 if (v < pf->num_alloc_vfs)
1629 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1630 pf->vf[v].vf_id);
1631 usleep_range(10000, 20000);
1632
1633 /* Begin disabling all the rings associated with VFs, but do not wait
1634 * between each VF.
1635 */
1636 for (v = 0; v < pf->num_alloc_vfs; v++) {
1637 /* On initial reset, we don't have any queues to disable */
1638 if (pf->vf[v].lan_vsi_idx == 0)
1639 continue;
1640
1641 /* If VF is reset in another thread just continue */
1642 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1643 continue;
1644
1645 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[v].lan_vsi_idx]);
1646 }
1647
1648 /* Now that we've notified HW to disable all of the VF rings, wait
1649 * until they finish.
1650 */
1651 for (v = 0; v < pf->num_alloc_vfs; v++) {
1652 /* On initial reset, we don't have any queues to disable */
1653 if (pf->vf[v].lan_vsi_idx == 0)
1654 continue;
1655
1656 /* If VF is reset in another thread just continue */
1657 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1658 continue;
1659
1660 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[v].lan_vsi_idx]);
1661 }
1662
1663 /* Hw may need up to 50ms to finish disabling the RX queues. We
1664 * minimize the wait by delaying only once for all VFs.
1665 */
1666 mdelay(50);
1667
1668 /* Finish the reset on each VF */
1669 for (v = 0; v < pf->num_alloc_vfs; v++) {
1670 /* If VF is reset in another thread just continue */
1671 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1672 continue;
1673
1674 i40e_cleanup_reset_vf(&pf->vf[v]);
1675 }
1676
1677 i40e_flush(hw);
1678 usleep_range(20000, 40000);
1679 clear_bit(__I40E_VF_DISABLE, pf->state);
1680
1681 return true;
1682 }
1683
1684 /**
1685 * i40e_free_vfs
1686 * @pf: pointer to the PF structure
1687 *
1688 * free VF resources
1689 **/
i40e_free_vfs(struct i40e_pf * pf)1690 void i40e_free_vfs(struct i40e_pf *pf)
1691 {
1692 struct i40e_hw *hw = &pf->hw;
1693 u32 reg_idx, bit_idx;
1694 int i, tmp, vf_id;
1695
1696 if (!pf->vf)
1697 return;
1698
1699 set_bit(__I40E_VFS_RELEASING, pf->state);
1700 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1701 usleep_range(1000, 2000);
1702
1703 i40e_notify_client_of_vf_enable(pf, 0);
1704
1705 /* Disable IOV before freeing resources. This lets any VF drivers
1706 * running in the host get themselves cleaned up before we yank
1707 * the carpet out from underneath their feet.
1708 */
1709 if (!pci_vfs_assigned(pf->pdev))
1710 pci_disable_sriov(pf->pdev);
1711 else
1712 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1713
1714 /* Amortize wait time by stopping all VFs at the same time */
1715 for (i = 0; i < pf->num_alloc_vfs; i++) {
1716 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1717 continue;
1718
1719 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1720 }
1721
1722 for (i = 0; i < pf->num_alloc_vfs; i++) {
1723 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1724 continue;
1725
1726 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1727 }
1728
1729 /* free up VF resources */
1730 tmp = pf->num_alloc_vfs;
1731 pf->num_alloc_vfs = 0;
1732 for (i = 0; i < tmp; i++) {
1733 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1734 i40e_free_vf_res(&pf->vf[i]);
1735 /* disable qp mappings */
1736 i40e_disable_vf_mappings(&pf->vf[i]);
1737 }
1738
1739 kfree(pf->vf);
1740 pf->vf = NULL;
1741
1742 /* This check is for when the driver is unloaded while VFs are
1743 * assigned. Setting the number of VFs to 0 through sysfs is caught
1744 * before this function ever gets called.
1745 */
1746 if (!pci_vfs_assigned(pf->pdev)) {
1747 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1748 * work correctly when SR-IOV gets re-enabled.
1749 */
1750 for (vf_id = 0; vf_id < tmp; vf_id++) {
1751 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1752 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1753 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1754 }
1755 }
1756 clear_bit(__I40E_VF_DISABLE, pf->state);
1757 clear_bit(__I40E_VFS_RELEASING, pf->state);
1758 }
1759
1760 #ifdef CONFIG_PCI_IOV
1761 /**
1762 * i40e_alloc_vfs
1763 * @pf: pointer to the PF structure
1764 * @num_alloc_vfs: number of VFs to allocate
1765 *
1766 * allocate VF resources
1767 **/
i40e_alloc_vfs(struct i40e_pf * pf,u16 num_alloc_vfs)1768 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1769 {
1770 struct i40e_vf *vfs;
1771 int i, ret = 0;
1772
1773 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1774 i40e_irq_dynamic_disable_icr0(pf);
1775
1776 /* Check to see if we're just allocating resources for extant VFs */
1777 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1778 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1779 if (ret) {
1780 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1781 pf->num_alloc_vfs = 0;
1782 goto err_iov;
1783 }
1784 }
1785 /* allocate memory */
1786 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1787 if (!vfs) {
1788 ret = -ENOMEM;
1789 goto err_alloc;
1790 }
1791 pf->vf = vfs;
1792
1793 /* apply default profile */
1794 for (i = 0; i < num_alloc_vfs; i++) {
1795 vfs[i].pf = pf;
1796 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1797 vfs[i].vf_id = i;
1798
1799 /* assign default capabilities */
1800 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1801 vfs[i].spoofchk = true;
1802
1803 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1804
1805 }
1806 pf->num_alloc_vfs = num_alloc_vfs;
1807
1808 /* VF resources get allocated during reset */
1809 i40e_reset_all_vfs(pf, false);
1810
1811 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1812
1813 err_alloc:
1814 if (ret)
1815 i40e_free_vfs(pf);
1816 err_iov:
1817 /* Re-enable interrupt 0. */
1818 i40e_irq_dynamic_enable_icr0(pf);
1819 return ret;
1820 }
1821
1822 #endif
1823 /**
1824 * i40e_pci_sriov_enable
1825 * @pdev: pointer to a pci_dev structure
1826 * @num_vfs: number of VFs to allocate
1827 *
1828 * Enable or change the number of VFs
1829 **/
i40e_pci_sriov_enable(struct pci_dev * pdev,int num_vfs)1830 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1831 {
1832 #ifdef CONFIG_PCI_IOV
1833 struct i40e_pf *pf = pci_get_drvdata(pdev);
1834 int pre_existing_vfs = pci_num_vf(pdev);
1835 int err = 0;
1836
1837 if (test_bit(__I40E_TESTING, pf->state)) {
1838 dev_warn(&pdev->dev,
1839 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1840 err = -EPERM;
1841 goto err_out;
1842 }
1843
1844 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1845 i40e_free_vfs(pf);
1846 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1847 goto out;
1848
1849 if (num_vfs > pf->num_req_vfs) {
1850 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1851 num_vfs, pf->num_req_vfs);
1852 err = -EPERM;
1853 goto err_out;
1854 }
1855
1856 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1857 err = i40e_alloc_vfs(pf, num_vfs);
1858 if (err) {
1859 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1860 goto err_out;
1861 }
1862
1863 out:
1864 return num_vfs;
1865
1866 err_out:
1867 return err;
1868 #endif
1869 return 0;
1870 }
1871
1872 /**
1873 * i40e_pci_sriov_configure
1874 * @pdev: pointer to a pci_dev structure
1875 * @num_vfs: number of VFs to allocate
1876 *
1877 * Enable or change the number of VFs. Called when the user updates the number
1878 * of VFs in sysfs.
1879 **/
i40e_pci_sriov_configure(struct pci_dev * pdev,int num_vfs)1880 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1881 {
1882 struct i40e_pf *pf = pci_get_drvdata(pdev);
1883 int ret = 0;
1884
1885 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1886 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1887 return -EAGAIN;
1888 }
1889
1890 if (num_vfs) {
1891 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1892 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1893 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1894 }
1895 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1896 goto sriov_configure_out;
1897 }
1898
1899 if (!pci_vfs_assigned(pf->pdev)) {
1900 i40e_free_vfs(pf);
1901 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1902 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1903 } else {
1904 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1905 ret = -EINVAL;
1906 goto sriov_configure_out;
1907 }
1908 sriov_configure_out:
1909 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1910 return ret;
1911 }
1912
1913 /***********************virtual channel routines******************/
1914
1915 /**
1916 * i40e_vc_send_msg_to_vf
1917 * @vf: pointer to the VF info
1918 * @v_opcode: virtual channel opcode
1919 * @v_retval: virtual channel return value
1920 * @msg: pointer to the msg buffer
1921 * @msglen: msg length
1922 *
1923 * send msg to VF
1924 **/
i40e_vc_send_msg_to_vf(struct i40e_vf * vf,u32 v_opcode,u32 v_retval,u8 * msg,u16 msglen)1925 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1926 u32 v_retval, u8 *msg, u16 msglen)
1927 {
1928 struct i40e_pf *pf;
1929 struct i40e_hw *hw;
1930 int abs_vf_id;
1931 i40e_status aq_ret;
1932
1933 /* validate the request */
1934 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1935 return -EINVAL;
1936
1937 pf = vf->pf;
1938 hw = &pf->hw;
1939 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1940
1941 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1942 msg, msglen, NULL);
1943 if (aq_ret) {
1944 dev_info(&pf->pdev->dev,
1945 "Unable to send the message to VF %d aq_err %d\n",
1946 vf->vf_id, pf->hw.aq.asq_last_status);
1947 return -EIO;
1948 }
1949
1950 return 0;
1951 }
1952
1953 /**
1954 * i40e_vc_send_resp_to_vf
1955 * @vf: pointer to the VF info
1956 * @opcode: operation code
1957 * @retval: return value
1958 *
1959 * send resp msg to VF
1960 **/
i40e_vc_send_resp_to_vf(struct i40e_vf * vf,enum virtchnl_ops opcode,i40e_status retval)1961 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1962 enum virtchnl_ops opcode,
1963 i40e_status retval)
1964 {
1965 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1966 }
1967
1968 /**
1969 * i40e_sync_vf_state
1970 * @vf: pointer to the VF info
1971 * @state: VF state
1972 *
1973 * Called from a VF message to synchronize the service with a potential
1974 * VF reset state
1975 **/
i40e_sync_vf_state(struct i40e_vf * vf,enum i40e_vf_states state)1976 static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
1977 {
1978 int i;
1979
1980 /* When handling some messages, it needs VF state to be set.
1981 * It is possible that this flag is cleared during VF reset,
1982 * so there is a need to wait until the end of the reset to
1983 * handle the request message correctly.
1984 */
1985 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
1986 if (test_bit(state, &vf->vf_states))
1987 return true;
1988 usleep_range(10000, 20000);
1989 }
1990
1991 return test_bit(state, &vf->vf_states);
1992 }
1993
1994 /**
1995 * i40e_vc_get_version_msg
1996 * @vf: pointer to the VF info
1997 * @msg: pointer to the msg buffer
1998 *
1999 * called from the VF to request the API version used by the PF
2000 **/
i40e_vc_get_version_msg(struct i40e_vf * vf,u8 * msg)2001 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
2002 {
2003 struct virtchnl_version_info info = {
2004 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
2005 };
2006
2007 vf->vf_ver = *(struct virtchnl_version_info *)msg;
2008 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
2009 if (VF_IS_V10(&vf->vf_ver))
2010 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
2011 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
2012 I40E_SUCCESS, (u8 *)&info,
2013 sizeof(struct virtchnl_version_info));
2014 }
2015
2016 /**
2017 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
2018 * @vf: pointer to VF structure
2019 **/
i40e_del_qch(struct i40e_vf * vf)2020 static void i40e_del_qch(struct i40e_vf *vf)
2021 {
2022 struct i40e_pf *pf = vf->pf;
2023 int i;
2024
2025 /* first element in the array belongs to primary VF VSI and we shouldn't
2026 * delete it. We should however delete the rest of the VSIs created
2027 */
2028 for (i = 1; i < vf->num_tc; i++) {
2029 if (vf->ch[i].vsi_idx) {
2030 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
2031 vf->ch[i].vsi_idx = 0;
2032 vf->ch[i].vsi_id = 0;
2033 }
2034 }
2035 }
2036
2037 /**
2038 * i40e_vc_get_max_frame_size
2039 * @vf: pointer to the VF
2040 *
2041 * Max frame size is determined based on the current port's max frame size and
2042 * whether a port VLAN is configured on this VF. The VF is not aware whether
2043 * it's in a port VLAN so the PF needs to account for this in max frame size
2044 * checks and sending the max frame size to the VF.
2045 **/
i40e_vc_get_max_frame_size(struct i40e_vf * vf)2046 static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2047 {
2048 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2049
2050 if (vf->port_vlan_id)
2051 max_frame_size -= VLAN_HLEN;
2052
2053 return max_frame_size;
2054 }
2055
2056 /**
2057 * i40e_vc_get_vf_resources_msg
2058 * @vf: pointer to the VF info
2059 * @msg: pointer to the msg buffer
2060 *
2061 * called from the VF to request its resources
2062 **/
i40e_vc_get_vf_resources_msg(struct i40e_vf * vf,u8 * msg)2063 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2064 {
2065 struct virtchnl_vf_resource *vfres = NULL;
2066 struct i40e_pf *pf = vf->pf;
2067 i40e_status aq_ret = 0;
2068 struct i40e_vsi *vsi;
2069 int num_vsis = 1;
2070 size_t len = 0;
2071 int ret;
2072
2073 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
2074 aq_ret = I40E_ERR_PARAM;
2075 goto err;
2076 }
2077
2078 len = struct_size(vfres, vsi_res, num_vsis);
2079 vfres = kzalloc(len, GFP_KERNEL);
2080 if (!vfres) {
2081 aq_ret = I40E_ERR_NO_MEMORY;
2082 len = 0;
2083 goto err;
2084 }
2085 if (VF_IS_V11(&vf->vf_ver))
2086 vf->driver_caps = *(u32 *)msg;
2087 else
2088 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2089 VIRTCHNL_VF_OFFLOAD_RSS_REG |
2090 VIRTCHNL_VF_OFFLOAD_VLAN;
2091
2092 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2093 vsi = pf->vsi[vf->lan_vsi_idx];
2094 if (!vsi->info.pvid)
2095 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2096
2097 if (i40e_vf_client_capable(pf, vf->vf_id) &&
2098 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_IWARP)) {
2099 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_IWARP;
2100 set_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
2101 } else {
2102 clear_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
2103 }
2104
2105 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2106 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2107 } else {
2108 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
2109 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2110 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2111 else
2112 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2113 }
2114
2115 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
2116 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2117 vfres->vf_cap_flags |=
2118 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2119 }
2120
2121 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2122 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2123
2124 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
2125 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2126 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2127
2128 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2129 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
2130 dev_err(&pf->pdev->dev,
2131 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2132 vf->vf_id);
2133 aq_ret = I40E_ERR_PARAM;
2134 goto err;
2135 }
2136 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2137 }
2138
2139 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
2140 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2141 vfres->vf_cap_flags |=
2142 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2143 }
2144
2145 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2146 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2147
2148 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2149 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2150
2151 vfres->num_vsis = num_vsis;
2152 vfres->num_queue_pairs = vf->num_queue_pairs;
2153 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2154 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2155 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2156 vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2157
2158 if (vf->lan_vsi_idx) {
2159 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2160 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2161 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2162 /* VFs only use TC 0 */
2163 vfres->vsi_res[0].qset_handle
2164 = le16_to_cpu(vsi->info.qs_handle[0]);
2165 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2166 vf->default_lan_addr.addr);
2167 }
2168 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2169
2170 err:
2171 /* send the response back to the VF */
2172 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2173 aq_ret, (u8 *)vfres, len);
2174
2175 kfree(vfres);
2176 return ret;
2177 }
2178
2179 /**
2180 * i40e_vc_config_promiscuous_mode_msg
2181 * @vf: pointer to the VF info
2182 * @msg: pointer to the msg buffer
2183 *
2184 * called from the VF to configure the promiscuous mode of
2185 * VF vsis
2186 **/
i40e_vc_config_promiscuous_mode_msg(struct i40e_vf * vf,u8 * msg)2187 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2188 {
2189 struct virtchnl_promisc_info *info =
2190 (struct virtchnl_promisc_info *)msg;
2191 struct i40e_pf *pf = vf->pf;
2192 i40e_status aq_ret = 0;
2193 bool allmulti = false;
2194 bool alluni = false;
2195
2196 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2197 aq_ret = I40E_ERR_PARAM;
2198 goto err_out;
2199 }
2200 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2201 dev_err(&pf->pdev->dev,
2202 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2203 vf->vf_id);
2204
2205 /* Lie to the VF on purpose, because this is an error we can
2206 * ignore. Unprivileged VF is not a virtual channel error.
2207 */
2208 aq_ret = 0;
2209 goto err_out;
2210 }
2211
2212 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2213 aq_ret = I40E_ERR_PARAM;
2214 goto err_out;
2215 }
2216
2217 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2218 aq_ret = I40E_ERR_PARAM;
2219 goto err_out;
2220 }
2221
2222 /* Multicast promiscuous handling*/
2223 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2224 allmulti = true;
2225
2226 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2227 alluni = true;
2228 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2229 alluni);
2230 if (aq_ret)
2231 goto err_out;
2232
2233 if (allmulti) {
2234 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2235 &vf->vf_states))
2236 dev_info(&pf->pdev->dev,
2237 "VF %d successfully set multicast promiscuous mode\n",
2238 vf->vf_id);
2239 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2240 &vf->vf_states))
2241 dev_info(&pf->pdev->dev,
2242 "VF %d successfully unset multicast promiscuous mode\n",
2243 vf->vf_id);
2244
2245 if (alluni) {
2246 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2247 &vf->vf_states))
2248 dev_info(&pf->pdev->dev,
2249 "VF %d successfully set unicast promiscuous mode\n",
2250 vf->vf_id);
2251 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2252 &vf->vf_states))
2253 dev_info(&pf->pdev->dev,
2254 "VF %d successfully unset unicast promiscuous mode\n",
2255 vf->vf_id);
2256
2257 err_out:
2258 /* send the response to the VF */
2259 return i40e_vc_send_resp_to_vf(vf,
2260 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2261 aq_ret);
2262 }
2263
2264 /**
2265 * i40e_vc_config_queues_msg
2266 * @vf: pointer to the VF info
2267 * @msg: pointer to the msg buffer
2268 *
2269 * called from the VF to configure the rx/tx
2270 * queues
2271 **/
i40e_vc_config_queues_msg(struct i40e_vf * vf,u8 * msg)2272 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2273 {
2274 struct virtchnl_vsi_queue_config_info *qci =
2275 (struct virtchnl_vsi_queue_config_info *)msg;
2276 struct virtchnl_queue_pair_info *qpi;
2277 u16 vsi_id, vsi_queue_id = 0;
2278 struct i40e_pf *pf = vf->pf;
2279 i40e_status aq_ret = 0;
2280 int i, j = 0, idx = 0;
2281 struct i40e_vsi *vsi;
2282 u16 num_qps_all = 0;
2283
2284 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2285 aq_ret = I40E_ERR_PARAM;
2286 goto error_param;
2287 }
2288
2289 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2290 aq_ret = I40E_ERR_PARAM;
2291 goto error_param;
2292 }
2293
2294 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2295 aq_ret = I40E_ERR_PARAM;
2296 goto error_param;
2297 }
2298
2299 if (vf->adq_enabled) {
2300 for (i = 0; i < vf->num_tc; i++)
2301 num_qps_all += vf->ch[i].num_qps;
2302 if (num_qps_all != qci->num_queue_pairs) {
2303 aq_ret = I40E_ERR_PARAM;
2304 goto error_param;
2305 }
2306 }
2307
2308 vsi_id = qci->vsi_id;
2309
2310 for (i = 0; i < qci->num_queue_pairs; i++) {
2311 qpi = &qci->qpair[i];
2312
2313 if (!vf->adq_enabled) {
2314 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2315 qpi->txq.queue_id)) {
2316 aq_ret = I40E_ERR_PARAM;
2317 goto error_param;
2318 }
2319
2320 vsi_queue_id = qpi->txq.queue_id;
2321
2322 if (qpi->txq.vsi_id != qci->vsi_id ||
2323 qpi->rxq.vsi_id != qci->vsi_id ||
2324 qpi->rxq.queue_id != vsi_queue_id) {
2325 aq_ret = I40E_ERR_PARAM;
2326 goto error_param;
2327 }
2328 }
2329
2330 if (vf->adq_enabled) {
2331 if (idx >= ARRAY_SIZE(vf->ch)) {
2332 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2333 goto error_param;
2334 }
2335 vsi_id = vf->ch[idx].vsi_id;
2336 }
2337
2338 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2339 &qpi->rxq) ||
2340 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2341 &qpi->txq)) {
2342 aq_ret = I40E_ERR_PARAM;
2343 goto error_param;
2344 }
2345
2346 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2347 * VF does not know about these additional VSIs and all
2348 * it cares is about its own queues. PF configures these queues
2349 * to its appropriate VSIs based on TC mapping
2350 */
2351 if (vf->adq_enabled) {
2352 if (idx >= ARRAY_SIZE(vf->ch)) {
2353 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2354 goto error_param;
2355 }
2356 if (j == (vf->ch[idx].num_qps - 1)) {
2357 idx++;
2358 j = 0; /* resetting the queue count */
2359 vsi_queue_id = 0;
2360 } else {
2361 j++;
2362 vsi_queue_id++;
2363 }
2364 }
2365 }
2366 /* set vsi num_queue_pairs in use to num configured by VF */
2367 if (!vf->adq_enabled) {
2368 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2369 qci->num_queue_pairs;
2370 } else {
2371 for (i = 0; i < vf->num_tc; i++) {
2372 vsi = pf->vsi[vf->ch[i].vsi_idx];
2373 vsi->num_queue_pairs = vf->ch[i].num_qps;
2374
2375 if (i40e_update_adq_vsi_queues(vsi, i)) {
2376 aq_ret = I40E_ERR_CONFIG;
2377 goto error_param;
2378 }
2379 }
2380 }
2381
2382 error_param:
2383 /* send the response to the VF */
2384 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2385 aq_ret);
2386 }
2387
2388 /**
2389 * i40e_validate_queue_map - check queue map is valid
2390 * @vf: the VF structure pointer
2391 * @vsi_id: vsi id
2392 * @queuemap: Tx or Rx queue map
2393 *
2394 * check if Tx or Rx queue map is valid
2395 **/
i40e_validate_queue_map(struct i40e_vf * vf,u16 vsi_id,unsigned long queuemap)2396 static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2397 unsigned long queuemap)
2398 {
2399 u16 vsi_queue_id, queue_id;
2400
2401 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2402 if (vf->adq_enabled) {
2403 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2404 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2405 } else {
2406 queue_id = vsi_queue_id;
2407 }
2408
2409 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2410 return -EINVAL;
2411 }
2412
2413 return 0;
2414 }
2415
2416 /**
2417 * i40e_vc_config_irq_map_msg
2418 * @vf: pointer to the VF info
2419 * @msg: pointer to the msg buffer
2420 *
2421 * called from the VF to configure the irq to
2422 * queue map
2423 **/
i40e_vc_config_irq_map_msg(struct i40e_vf * vf,u8 * msg)2424 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2425 {
2426 struct virtchnl_irq_map_info *irqmap_info =
2427 (struct virtchnl_irq_map_info *)msg;
2428 struct virtchnl_vector_map *map;
2429 u16 vsi_id;
2430 i40e_status aq_ret = 0;
2431 int i;
2432
2433 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2434 aq_ret = I40E_ERR_PARAM;
2435 goto error_param;
2436 }
2437
2438 if (irqmap_info->num_vectors >
2439 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2440 aq_ret = I40E_ERR_PARAM;
2441 goto error_param;
2442 }
2443
2444 for (i = 0; i < irqmap_info->num_vectors; i++) {
2445 map = &irqmap_info->vecmap[i];
2446 /* validate msg params */
2447 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2448 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2449 aq_ret = I40E_ERR_PARAM;
2450 goto error_param;
2451 }
2452 vsi_id = map->vsi_id;
2453
2454 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2455 aq_ret = I40E_ERR_PARAM;
2456 goto error_param;
2457 }
2458
2459 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2460 aq_ret = I40E_ERR_PARAM;
2461 goto error_param;
2462 }
2463
2464 i40e_config_irq_link_list(vf, vsi_id, map);
2465 }
2466 error_param:
2467 /* send the response to the VF */
2468 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2469 aq_ret);
2470 }
2471
2472 /**
2473 * i40e_ctrl_vf_tx_rings
2474 * @vsi: the SRIOV VSI being configured
2475 * @q_map: bit map of the queues to be enabled
2476 * @enable: start or stop the queue
2477 **/
i40e_ctrl_vf_tx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2478 static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2479 bool enable)
2480 {
2481 struct i40e_pf *pf = vsi->back;
2482 int ret = 0;
2483 u16 q_id;
2484
2485 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2486 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2487 vsi->base_queue + q_id,
2488 false /*is xdp*/, enable);
2489 if (ret)
2490 break;
2491 }
2492 return ret;
2493 }
2494
2495 /**
2496 * i40e_ctrl_vf_rx_rings
2497 * @vsi: the SRIOV VSI being configured
2498 * @q_map: bit map of the queues to be enabled
2499 * @enable: start or stop the queue
2500 **/
i40e_ctrl_vf_rx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2501 static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2502 bool enable)
2503 {
2504 struct i40e_pf *pf = vsi->back;
2505 int ret = 0;
2506 u16 q_id;
2507
2508 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2509 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2510 enable);
2511 if (ret)
2512 break;
2513 }
2514 return ret;
2515 }
2516
2517 /**
2518 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2519 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2520 *
2521 * Returns true if validation was successful, else false.
2522 */
i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select * vqs)2523 static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2524 {
2525 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2526 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2527 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2528 return false;
2529
2530 return true;
2531 }
2532
2533 /**
2534 * i40e_vc_enable_queues_msg
2535 * @vf: pointer to the VF info
2536 * @msg: pointer to the msg buffer
2537 *
2538 * called from the VF to enable all or specific queue(s)
2539 **/
i40e_vc_enable_queues_msg(struct i40e_vf * vf,u8 * msg)2540 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2541 {
2542 struct virtchnl_queue_select *vqs =
2543 (struct virtchnl_queue_select *)msg;
2544 struct i40e_pf *pf = vf->pf;
2545 i40e_status aq_ret = 0;
2546 int i;
2547
2548 if (vf->is_disabled_from_host) {
2549 aq_ret = -EPERM;
2550 dev_info(&pf->pdev->dev,
2551 "Admin has disabled VF %d, will not enable queues\n",
2552 vf->vf_id);
2553 goto error_param;
2554 }
2555
2556 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2557 aq_ret = I40E_ERR_PARAM;
2558 goto error_param;
2559 }
2560
2561 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2562 aq_ret = I40E_ERR_PARAM;
2563 goto error_param;
2564 }
2565
2566 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2567 aq_ret = I40E_ERR_PARAM;
2568 goto error_param;
2569 }
2570
2571 /* Use the queue bit map sent by the VF */
2572 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2573 true)) {
2574 aq_ret = I40E_ERR_TIMEOUT;
2575 goto error_param;
2576 }
2577 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2578 true)) {
2579 aq_ret = I40E_ERR_TIMEOUT;
2580 goto error_param;
2581 }
2582
2583 /* need to start the rings for additional ADq VSI's as well */
2584 if (vf->adq_enabled) {
2585 /* zero belongs to LAN VSI */
2586 for (i = 1; i < vf->num_tc; i++) {
2587 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2588 aq_ret = I40E_ERR_TIMEOUT;
2589 }
2590 }
2591
2592 error_param:
2593 /* send the response to the VF */
2594 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2595 aq_ret);
2596 }
2597
2598 /**
2599 * i40e_vc_disable_queues_msg
2600 * @vf: pointer to the VF info
2601 * @msg: pointer to the msg buffer
2602 *
2603 * called from the VF to disable all or specific
2604 * queue(s)
2605 **/
i40e_vc_disable_queues_msg(struct i40e_vf * vf,u8 * msg)2606 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2607 {
2608 struct virtchnl_queue_select *vqs =
2609 (struct virtchnl_queue_select *)msg;
2610 struct i40e_pf *pf = vf->pf;
2611 i40e_status aq_ret = 0;
2612
2613 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2614 aq_ret = I40E_ERR_PARAM;
2615 goto error_param;
2616 }
2617
2618 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2619 aq_ret = I40E_ERR_PARAM;
2620 goto error_param;
2621 }
2622
2623 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2624 aq_ret = I40E_ERR_PARAM;
2625 goto error_param;
2626 }
2627
2628 /* Use the queue bit map sent by the VF */
2629 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2630 false)) {
2631 aq_ret = I40E_ERR_TIMEOUT;
2632 goto error_param;
2633 }
2634 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2635 false)) {
2636 aq_ret = I40E_ERR_TIMEOUT;
2637 goto error_param;
2638 }
2639 error_param:
2640 /* send the response to the VF */
2641 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2642 aq_ret);
2643 }
2644
2645 /**
2646 * i40e_check_enough_queue - find big enough queue number
2647 * @vf: pointer to the VF info
2648 * @needed: the number of items needed
2649 *
2650 * Returns the base item index of the queue, or negative for error
2651 **/
i40e_check_enough_queue(struct i40e_vf * vf,u16 needed)2652 static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2653 {
2654 unsigned int i, cur_queues, more, pool_size;
2655 struct i40e_lump_tracking *pile;
2656 struct i40e_pf *pf = vf->pf;
2657 struct i40e_vsi *vsi;
2658
2659 vsi = pf->vsi[vf->lan_vsi_idx];
2660 cur_queues = vsi->alloc_queue_pairs;
2661
2662 /* if current allocated queues are enough for need */
2663 if (cur_queues >= needed)
2664 return vsi->base_queue;
2665
2666 pile = pf->qp_pile;
2667 if (cur_queues > 0) {
2668 /* if the allocated queues are not zero
2669 * just check if there are enough queues for more
2670 * behind the allocated queues.
2671 */
2672 more = needed - cur_queues;
2673 for (i = vsi->base_queue + cur_queues;
2674 i < pile->num_entries; i++) {
2675 if (pile->list[i] & I40E_PILE_VALID_BIT)
2676 break;
2677
2678 if (more-- == 1)
2679 /* there is enough */
2680 return vsi->base_queue;
2681 }
2682 }
2683
2684 pool_size = 0;
2685 for (i = 0; i < pile->num_entries; i++) {
2686 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2687 pool_size = 0;
2688 continue;
2689 }
2690 if (needed <= ++pool_size)
2691 /* there is enough */
2692 return i;
2693 }
2694
2695 return -ENOMEM;
2696 }
2697
2698 /**
2699 * i40e_vc_request_queues_msg
2700 * @vf: pointer to the VF info
2701 * @msg: pointer to the msg buffer
2702 *
2703 * VFs get a default number of queues but can use this message to request a
2704 * different number. If the request is successful, PF will reset the VF and
2705 * return 0. If unsuccessful, PF will send message informing VF of number of
2706 * available queues and return result of sending VF a message.
2707 **/
i40e_vc_request_queues_msg(struct i40e_vf * vf,u8 * msg)2708 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2709 {
2710 struct virtchnl_vf_res_request *vfres =
2711 (struct virtchnl_vf_res_request *)msg;
2712 u16 req_pairs = vfres->num_queue_pairs;
2713 u8 cur_pairs = vf->num_queue_pairs;
2714 struct i40e_pf *pf = vf->pf;
2715
2716 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2717 return -EINVAL;
2718
2719 if (req_pairs > I40E_MAX_VF_QUEUES) {
2720 dev_err(&pf->pdev->dev,
2721 "VF %d tried to request more than %d queues.\n",
2722 vf->vf_id,
2723 I40E_MAX_VF_QUEUES);
2724 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2725 } else if (req_pairs - cur_pairs > pf->queues_left) {
2726 dev_warn(&pf->pdev->dev,
2727 "VF %d requested %d more queues, but only %d left.\n",
2728 vf->vf_id,
2729 req_pairs - cur_pairs,
2730 pf->queues_left);
2731 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2732 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2733 dev_warn(&pf->pdev->dev,
2734 "VF %d requested %d more queues, but there is not enough for it.\n",
2735 vf->vf_id,
2736 req_pairs - cur_pairs);
2737 vfres->num_queue_pairs = cur_pairs;
2738 } else {
2739 /* successful request */
2740 vf->num_req_queues = req_pairs;
2741 i40e_vc_reset_vf(vf, true);
2742 return 0;
2743 }
2744
2745 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2746 (u8 *)vfres, sizeof(*vfres));
2747 }
2748
2749 /**
2750 * i40e_vc_get_stats_msg
2751 * @vf: pointer to the VF info
2752 * @msg: pointer to the msg buffer
2753 *
2754 * called from the VF to get vsi stats
2755 **/
i40e_vc_get_stats_msg(struct i40e_vf * vf,u8 * msg)2756 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2757 {
2758 struct virtchnl_queue_select *vqs =
2759 (struct virtchnl_queue_select *)msg;
2760 struct i40e_pf *pf = vf->pf;
2761 struct i40e_eth_stats stats;
2762 i40e_status aq_ret = 0;
2763 struct i40e_vsi *vsi;
2764
2765 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2766
2767 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2768 aq_ret = I40E_ERR_PARAM;
2769 goto error_param;
2770 }
2771
2772 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2773 aq_ret = I40E_ERR_PARAM;
2774 goto error_param;
2775 }
2776
2777 vsi = pf->vsi[vf->lan_vsi_idx];
2778 if (!vsi) {
2779 aq_ret = I40E_ERR_PARAM;
2780 goto error_param;
2781 }
2782 i40e_update_eth_stats(vsi);
2783 stats = vsi->eth_stats;
2784
2785 error_param:
2786 /* send the response back to the VF */
2787 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2788 (u8 *)&stats, sizeof(stats));
2789 }
2790
2791 /* If the VF is not trusted restrict the number of MAC/VLAN it can program
2792 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2793 */
2794 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2795 #define I40E_VC_MAX_VLAN_PER_VF 16
2796
2797 /**
2798 * i40e_check_vf_permission
2799 * @vf: pointer to the VF info
2800 * @al: MAC address list from virtchnl
2801 *
2802 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2803 * if any address in the list is not valid. Checks the following conditions:
2804 *
2805 * 1) broadcast and zero addresses are never valid
2806 * 2) unicast addresses are not allowed if the VMM has administratively set
2807 * the VF MAC address, unless the VF is marked as privileged.
2808 * 3) There is enough space to add all the addresses.
2809 *
2810 * Note that to guarantee consistency, it is expected this function be called
2811 * while holding the mac_filter_hash_lock, as otherwise the current number of
2812 * addresses might not be accurate.
2813 **/
i40e_check_vf_permission(struct i40e_vf * vf,struct virtchnl_ether_addr_list * al)2814 static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2815 struct virtchnl_ether_addr_list *al)
2816 {
2817 struct i40e_pf *pf = vf->pf;
2818 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2819 int mac2add_cnt = 0;
2820 int i;
2821
2822 for (i = 0; i < al->num_elements; i++) {
2823 struct i40e_mac_filter *f;
2824 u8 *addr = al->list[i].addr;
2825
2826 if (is_broadcast_ether_addr(addr) ||
2827 is_zero_ether_addr(addr)) {
2828 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2829 addr);
2830 return I40E_ERR_INVALID_MAC_ADDR;
2831 }
2832
2833 /* If the host VMM administrator has set the VF MAC address
2834 * administratively via the ndo_set_vf_mac command then deny
2835 * permission to the VF to add or delete unicast MAC addresses.
2836 * Unless the VF is privileged and then it can do whatever.
2837 * The VF may request to set the MAC address filter already
2838 * assigned to it so do not return an error in that case.
2839 */
2840 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2841 !is_multicast_ether_addr(addr) && vf->pf_set_mac &&
2842 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2843 dev_err(&pf->pdev->dev,
2844 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2845 return -EPERM;
2846 }
2847
2848 /*count filters that really will be added*/
2849 f = i40e_find_mac(vsi, addr);
2850 if (!f)
2851 ++mac2add_cnt;
2852 }
2853
2854 /* If this VF is not privileged, then we can't add more than a limited
2855 * number of addresses. Check to make sure that the additions do not
2856 * push us over the limit.
2857 */
2858 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2859 (i40e_count_filters(vsi) + mac2add_cnt) >
2860 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2861 dev_err(&pf->pdev->dev,
2862 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2863 return -EPERM;
2864 }
2865 return 0;
2866 }
2867
2868 /**
2869 * i40e_vc_add_mac_addr_msg
2870 * @vf: pointer to the VF info
2871 * @msg: pointer to the msg buffer
2872 *
2873 * add guest mac address filter
2874 **/
i40e_vc_add_mac_addr_msg(struct i40e_vf * vf,u8 * msg)2875 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2876 {
2877 struct virtchnl_ether_addr_list *al =
2878 (struct virtchnl_ether_addr_list *)msg;
2879 struct i40e_pf *pf = vf->pf;
2880 struct i40e_vsi *vsi = NULL;
2881 i40e_status ret = 0;
2882 int i;
2883
2884 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
2885 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2886 ret = I40E_ERR_PARAM;
2887 goto error_param;
2888 }
2889
2890 vsi = pf->vsi[vf->lan_vsi_idx];
2891
2892 /* Lock once, because all function inside for loop accesses VSI's
2893 * MAC filter list which needs to be protected using same lock.
2894 */
2895 spin_lock_bh(&vsi->mac_filter_hash_lock);
2896
2897 ret = i40e_check_vf_permission(vf, al);
2898 if (ret) {
2899 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2900 goto error_param;
2901 }
2902
2903 /* add new addresses to the list */
2904 for (i = 0; i < al->num_elements; i++) {
2905 struct i40e_mac_filter *f;
2906
2907 f = i40e_find_mac(vsi, al->list[i].addr);
2908 if (!f) {
2909 f = i40e_add_mac_filter(vsi, al->list[i].addr);
2910
2911 if (!f) {
2912 dev_err(&pf->pdev->dev,
2913 "Unable to add MAC filter %pM for VF %d\n",
2914 al->list[i].addr, vf->vf_id);
2915 ret = I40E_ERR_PARAM;
2916 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2917 goto error_param;
2918 }
2919 if (is_valid_ether_addr(al->list[i].addr) &&
2920 is_zero_ether_addr(vf->default_lan_addr.addr))
2921 ether_addr_copy(vf->default_lan_addr.addr,
2922 al->list[i].addr);
2923 }
2924 }
2925 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2926
2927 /* program the updated filter list */
2928 ret = i40e_sync_vsi_filters(vsi);
2929 if (ret)
2930 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2931 vf->vf_id, ret);
2932
2933 error_param:
2934 /* send the response to the VF */
2935 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
2936 ret, NULL, 0);
2937 }
2938
2939 /**
2940 * i40e_vc_del_mac_addr_msg
2941 * @vf: pointer to the VF info
2942 * @msg: pointer to the msg buffer
2943 *
2944 * remove guest mac address filter
2945 **/
i40e_vc_del_mac_addr_msg(struct i40e_vf * vf,u8 * msg)2946 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2947 {
2948 struct virtchnl_ether_addr_list *al =
2949 (struct virtchnl_ether_addr_list *)msg;
2950 bool was_unimac_deleted = false;
2951 struct i40e_pf *pf = vf->pf;
2952 struct i40e_vsi *vsi = NULL;
2953 i40e_status ret = 0;
2954 int i;
2955
2956 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
2957 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2958 ret = I40E_ERR_PARAM;
2959 goto error_param;
2960 }
2961
2962 for (i = 0; i < al->num_elements; i++) {
2963 if (is_broadcast_ether_addr(al->list[i].addr) ||
2964 is_zero_ether_addr(al->list[i].addr)) {
2965 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
2966 al->list[i].addr, vf->vf_id);
2967 ret = I40E_ERR_INVALID_MAC_ADDR;
2968 goto error_param;
2969 }
2970 if (ether_addr_equal(al->list[i].addr, vf->default_lan_addr.addr))
2971 was_unimac_deleted = true;
2972 }
2973 vsi = pf->vsi[vf->lan_vsi_idx];
2974
2975 spin_lock_bh(&vsi->mac_filter_hash_lock);
2976 /* delete addresses from the list */
2977 for (i = 0; i < al->num_elements; i++)
2978 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
2979 ret = I40E_ERR_INVALID_MAC_ADDR;
2980 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2981 goto error_param;
2982 }
2983
2984 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2985
2986 /* program the updated filter list */
2987 ret = i40e_sync_vsi_filters(vsi);
2988 if (ret)
2989 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2990 vf->vf_id, ret);
2991
2992 if (vf->trusted && was_unimac_deleted) {
2993 struct i40e_mac_filter *f;
2994 struct hlist_node *h;
2995 u8 *macaddr = NULL;
2996 int bkt;
2997
2998 /* set last unicast mac address as default */
2999 spin_lock_bh(&vsi->mac_filter_hash_lock);
3000 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3001 if (is_valid_ether_addr(f->macaddr))
3002 macaddr = f->macaddr;
3003 }
3004 if (macaddr)
3005 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
3006 spin_unlock_bh(&vsi->mac_filter_hash_lock);
3007 }
3008 error_param:
3009 /* send the response to the VF */
3010 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3011 }
3012
3013 /**
3014 * i40e_vc_add_vlan_msg
3015 * @vf: pointer to the VF info
3016 * @msg: pointer to the msg buffer
3017 *
3018 * program guest vlan id
3019 **/
i40e_vc_add_vlan_msg(struct i40e_vf * vf,u8 * msg)3020 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3021 {
3022 struct virtchnl_vlan_filter_list *vfl =
3023 (struct virtchnl_vlan_filter_list *)msg;
3024 struct i40e_pf *pf = vf->pf;
3025 struct i40e_vsi *vsi = NULL;
3026 i40e_status aq_ret = 0;
3027 int i;
3028
3029 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3030 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3031 dev_err(&pf->pdev->dev,
3032 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3033 goto error_param;
3034 }
3035 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3036 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3037 aq_ret = I40E_ERR_PARAM;
3038 goto error_param;
3039 }
3040
3041 for (i = 0; i < vfl->num_elements; i++) {
3042 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3043 aq_ret = I40E_ERR_PARAM;
3044 dev_err(&pf->pdev->dev,
3045 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3046 goto error_param;
3047 }
3048 }
3049 vsi = pf->vsi[vf->lan_vsi_idx];
3050 if (vsi->info.pvid) {
3051 aq_ret = I40E_ERR_PARAM;
3052 goto error_param;
3053 }
3054
3055 i40e_vlan_stripping_enable(vsi);
3056 for (i = 0; i < vfl->num_elements; i++) {
3057 /* add new VLAN filter */
3058 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3059 if (!ret)
3060 vf->num_vlan++;
3061
3062 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3063 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3064 true,
3065 vfl->vlan_id[i],
3066 NULL);
3067 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3068 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3069 true,
3070 vfl->vlan_id[i],
3071 NULL);
3072
3073 if (ret)
3074 dev_err(&pf->pdev->dev,
3075 "Unable to add VLAN filter %d for VF %d, error %d\n",
3076 vfl->vlan_id[i], vf->vf_id, ret);
3077 }
3078
3079 error_param:
3080 /* send the response to the VF */
3081 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3082 }
3083
3084 /**
3085 * i40e_vc_remove_vlan_msg
3086 * @vf: pointer to the VF info
3087 * @msg: pointer to the msg buffer
3088 *
3089 * remove programmed guest vlan id
3090 **/
i40e_vc_remove_vlan_msg(struct i40e_vf * vf,u8 * msg)3091 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3092 {
3093 struct virtchnl_vlan_filter_list *vfl =
3094 (struct virtchnl_vlan_filter_list *)msg;
3095 struct i40e_pf *pf = vf->pf;
3096 struct i40e_vsi *vsi = NULL;
3097 i40e_status aq_ret = 0;
3098 int i;
3099
3100 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3101 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3102 aq_ret = I40E_ERR_PARAM;
3103 goto error_param;
3104 }
3105
3106 for (i = 0; i < vfl->num_elements; i++) {
3107 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3108 aq_ret = I40E_ERR_PARAM;
3109 goto error_param;
3110 }
3111 }
3112
3113 vsi = pf->vsi[vf->lan_vsi_idx];
3114 if (vsi->info.pvid) {
3115 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3116 aq_ret = I40E_ERR_PARAM;
3117 goto error_param;
3118 }
3119
3120 for (i = 0; i < vfl->num_elements; i++) {
3121 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3122 vf->num_vlan--;
3123
3124 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3125 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3126 false,
3127 vfl->vlan_id[i],
3128 NULL);
3129 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3130 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3131 false,
3132 vfl->vlan_id[i],
3133 NULL);
3134 }
3135
3136 error_param:
3137 /* send the response to the VF */
3138 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3139 }
3140
3141 /**
3142 * i40e_vc_iwarp_msg
3143 * @vf: pointer to the VF info
3144 * @msg: pointer to the msg buffer
3145 * @msglen: msg length
3146 *
3147 * called from the VF for the iwarp msgs
3148 **/
i40e_vc_iwarp_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)3149 static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3150 {
3151 struct i40e_pf *pf = vf->pf;
3152 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3153 i40e_status aq_ret = 0;
3154
3155 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3156 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3157 aq_ret = I40E_ERR_PARAM;
3158 goto error_param;
3159 }
3160
3161 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
3162 msg, msglen);
3163
3164 error_param:
3165 /* send the response to the VF */
3166 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP,
3167 aq_ret);
3168 }
3169
3170 /**
3171 * i40e_vc_iwarp_qvmap_msg
3172 * @vf: pointer to the VF info
3173 * @msg: pointer to the msg buffer
3174 * @config: config qvmap or release it
3175 *
3176 * called from the VF for the iwarp msgs
3177 **/
i40e_vc_iwarp_qvmap_msg(struct i40e_vf * vf,u8 * msg,bool config)3178 static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3179 {
3180 struct virtchnl_iwarp_qvlist_info *qvlist_info =
3181 (struct virtchnl_iwarp_qvlist_info *)msg;
3182 i40e_status aq_ret = 0;
3183
3184 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3185 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3186 aq_ret = I40E_ERR_PARAM;
3187 goto error_param;
3188 }
3189
3190 if (config) {
3191 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
3192 aq_ret = I40E_ERR_PARAM;
3193 } else {
3194 i40e_release_iwarp_qvlist(vf);
3195 }
3196
3197 error_param:
3198 /* send the response to the VF */
3199 return i40e_vc_send_resp_to_vf(vf,
3200 config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP :
3201 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP,
3202 aq_ret);
3203 }
3204
3205 /**
3206 * i40e_vc_config_rss_key
3207 * @vf: pointer to the VF info
3208 * @msg: pointer to the msg buffer
3209 *
3210 * Configure the VF's RSS key
3211 **/
i40e_vc_config_rss_key(struct i40e_vf * vf,u8 * msg)3212 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3213 {
3214 struct virtchnl_rss_key *vrk =
3215 (struct virtchnl_rss_key *)msg;
3216 struct i40e_pf *pf = vf->pf;
3217 struct i40e_vsi *vsi = NULL;
3218 i40e_status aq_ret = 0;
3219
3220 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3221 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3222 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3223 aq_ret = I40E_ERR_PARAM;
3224 goto err;
3225 }
3226
3227 vsi = pf->vsi[vf->lan_vsi_idx];
3228 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3229 err:
3230 /* send the response to the VF */
3231 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3232 aq_ret);
3233 }
3234
3235 /**
3236 * i40e_vc_config_rss_lut
3237 * @vf: pointer to the VF info
3238 * @msg: pointer to the msg buffer
3239 *
3240 * Configure the VF's RSS LUT
3241 **/
i40e_vc_config_rss_lut(struct i40e_vf * vf,u8 * msg)3242 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3243 {
3244 struct virtchnl_rss_lut *vrl =
3245 (struct virtchnl_rss_lut *)msg;
3246 struct i40e_pf *pf = vf->pf;
3247 struct i40e_vsi *vsi = NULL;
3248 i40e_status aq_ret = 0;
3249 u16 i;
3250
3251 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3252 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3253 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3254 aq_ret = I40E_ERR_PARAM;
3255 goto err;
3256 }
3257
3258 for (i = 0; i < vrl->lut_entries; i++)
3259 if (vrl->lut[i] >= vf->num_queue_pairs) {
3260 aq_ret = I40E_ERR_PARAM;
3261 goto err;
3262 }
3263
3264 vsi = pf->vsi[vf->lan_vsi_idx];
3265 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3266 /* send the response to the VF */
3267 err:
3268 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3269 aq_ret);
3270 }
3271
3272 /**
3273 * i40e_vc_get_rss_hena
3274 * @vf: pointer to the VF info
3275 * @msg: pointer to the msg buffer
3276 *
3277 * Return the RSS HENA bits allowed by the hardware
3278 **/
i40e_vc_get_rss_hena(struct i40e_vf * vf,u8 * msg)3279 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3280 {
3281 struct virtchnl_rss_hena *vrh = NULL;
3282 struct i40e_pf *pf = vf->pf;
3283 i40e_status aq_ret = 0;
3284 int len = 0;
3285
3286 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3287 aq_ret = I40E_ERR_PARAM;
3288 goto err;
3289 }
3290 len = sizeof(struct virtchnl_rss_hena);
3291
3292 vrh = kzalloc(len, GFP_KERNEL);
3293 if (!vrh) {
3294 aq_ret = I40E_ERR_NO_MEMORY;
3295 len = 0;
3296 goto err;
3297 }
3298 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3299 err:
3300 /* send the response back to the VF */
3301 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3302 aq_ret, (u8 *)vrh, len);
3303 kfree(vrh);
3304 return aq_ret;
3305 }
3306
3307 /**
3308 * i40e_vc_set_rss_hena
3309 * @vf: pointer to the VF info
3310 * @msg: pointer to the msg buffer
3311 *
3312 * Set the RSS HENA bits for the VF
3313 **/
i40e_vc_set_rss_hena(struct i40e_vf * vf,u8 * msg)3314 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3315 {
3316 struct virtchnl_rss_hena *vrh =
3317 (struct virtchnl_rss_hena *)msg;
3318 struct i40e_pf *pf = vf->pf;
3319 struct i40e_hw *hw = &pf->hw;
3320 i40e_status aq_ret = 0;
3321
3322 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3323 aq_ret = I40E_ERR_PARAM;
3324 goto err;
3325 }
3326 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3327 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3328 (u32)(vrh->hena >> 32));
3329
3330 /* send the response to the VF */
3331 err:
3332 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3333 }
3334
3335 /**
3336 * i40e_vc_enable_vlan_stripping
3337 * @vf: pointer to the VF info
3338 * @msg: pointer to the msg buffer
3339 *
3340 * Enable vlan header stripping for the VF
3341 **/
i40e_vc_enable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3342 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3343 {
3344 i40e_status aq_ret = 0;
3345 struct i40e_vsi *vsi;
3346
3347 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3348 aq_ret = I40E_ERR_PARAM;
3349 goto err;
3350 }
3351
3352 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3353 i40e_vlan_stripping_enable(vsi);
3354
3355 /* send the response to the VF */
3356 err:
3357 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3358 aq_ret);
3359 }
3360
3361 /**
3362 * i40e_vc_disable_vlan_stripping
3363 * @vf: pointer to the VF info
3364 * @msg: pointer to the msg buffer
3365 *
3366 * Disable vlan header stripping for the VF
3367 **/
i40e_vc_disable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3368 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3369 {
3370 i40e_status aq_ret = 0;
3371 struct i40e_vsi *vsi;
3372
3373 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3374 aq_ret = I40E_ERR_PARAM;
3375 goto err;
3376 }
3377
3378 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3379 i40e_vlan_stripping_disable(vsi);
3380
3381 /* send the response to the VF */
3382 err:
3383 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3384 aq_ret);
3385 }
3386
3387 /**
3388 * i40e_validate_cloud_filter
3389 * @vf: pointer to VF structure
3390 * @tc_filter: pointer to filter requested
3391 *
3392 * This function validates cloud filter programmed as TC filter for ADq
3393 **/
i40e_validate_cloud_filter(struct i40e_vf * vf,struct virtchnl_filter * tc_filter)3394 static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3395 struct virtchnl_filter *tc_filter)
3396 {
3397 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3398 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3399 struct i40e_pf *pf = vf->pf;
3400 struct i40e_vsi *vsi = NULL;
3401 struct i40e_mac_filter *f;
3402 struct hlist_node *h;
3403 bool found = false;
3404 int bkt;
3405
3406 if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) {
3407 dev_info(&pf->pdev->dev,
3408 "VF %d: ADQ doesn't support this action (%d)\n",
3409 vf->vf_id, tc_filter->action);
3410 goto err;
3411 }
3412
3413 /* action_meta is TC number here to which the filter is applied */
3414 if (!tc_filter->action_meta ||
3415 tc_filter->action_meta > vf->num_tc) {
3416 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3417 vf->vf_id, tc_filter->action_meta);
3418 goto err;
3419 }
3420
3421 /* Check filter if it's programmed for advanced mode or basic mode.
3422 * There are two ADq modes (for VF only),
3423 * 1. Basic mode: intended to allow as many filter options as possible
3424 * to be added to a VF in Non-trusted mode. Main goal is
3425 * to add filters to its own MAC and VLAN id.
3426 * 2. Advanced mode: is for allowing filters to be applied other than
3427 * its own MAC or VLAN. This mode requires the VF to be
3428 * Trusted.
3429 */
3430 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3431 vsi = pf->vsi[vf->lan_vsi_idx];
3432 f = i40e_find_mac(vsi, data.dst_mac);
3433
3434 if (!f) {
3435 dev_info(&pf->pdev->dev,
3436 "Destination MAC %pM doesn't belong to VF %d\n",
3437 data.dst_mac, vf->vf_id);
3438 goto err;
3439 }
3440
3441 if (mask.vlan_id) {
3442 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3443 hlist) {
3444 if (f->vlan == ntohs(data.vlan_id)) {
3445 found = true;
3446 break;
3447 }
3448 }
3449 if (!found) {
3450 dev_info(&pf->pdev->dev,
3451 "VF %d doesn't have any VLAN id %u\n",
3452 vf->vf_id, ntohs(data.vlan_id));
3453 goto err;
3454 }
3455 }
3456 } else {
3457 /* Check if VF is trusted */
3458 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3459 dev_err(&pf->pdev->dev,
3460 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3461 vf->vf_id);
3462 return I40E_ERR_CONFIG;
3463 }
3464 }
3465
3466 if (mask.dst_mac[0] & data.dst_mac[0]) {
3467 if (is_broadcast_ether_addr(data.dst_mac) ||
3468 is_zero_ether_addr(data.dst_mac)) {
3469 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3470 vf->vf_id, data.dst_mac);
3471 goto err;
3472 }
3473 }
3474
3475 if (mask.src_mac[0] & data.src_mac[0]) {
3476 if (is_broadcast_ether_addr(data.src_mac) ||
3477 is_zero_ether_addr(data.src_mac)) {
3478 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3479 vf->vf_id, data.src_mac);
3480 goto err;
3481 }
3482 }
3483
3484 if (mask.dst_port & data.dst_port) {
3485 if (!data.dst_port) {
3486 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3487 vf->vf_id);
3488 goto err;
3489 }
3490 }
3491
3492 if (mask.src_port & data.src_port) {
3493 if (!data.src_port) {
3494 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3495 vf->vf_id);
3496 goto err;
3497 }
3498 }
3499
3500 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3501 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3502 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3503 vf->vf_id);
3504 goto err;
3505 }
3506
3507 if (mask.vlan_id & data.vlan_id) {
3508 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3509 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3510 vf->vf_id);
3511 goto err;
3512 }
3513 }
3514
3515 return I40E_SUCCESS;
3516 err:
3517 return I40E_ERR_CONFIG;
3518 }
3519
3520 /**
3521 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3522 * @vf: pointer to the VF info
3523 * @seid: seid of the vsi it is searching for
3524 **/
i40e_find_vsi_from_seid(struct i40e_vf * vf,u16 seid)3525 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3526 {
3527 struct i40e_pf *pf = vf->pf;
3528 struct i40e_vsi *vsi = NULL;
3529 int i;
3530
3531 for (i = 0; i < vf->num_tc ; i++) {
3532 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3533 if (vsi && vsi->seid == seid)
3534 return vsi;
3535 }
3536 return NULL;
3537 }
3538
3539 /**
3540 * i40e_del_all_cloud_filters
3541 * @vf: pointer to the VF info
3542 *
3543 * This function deletes all cloud filters
3544 **/
i40e_del_all_cloud_filters(struct i40e_vf * vf)3545 static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3546 {
3547 struct i40e_cloud_filter *cfilter = NULL;
3548 struct i40e_pf *pf = vf->pf;
3549 struct i40e_vsi *vsi = NULL;
3550 struct hlist_node *node;
3551 int ret;
3552
3553 hlist_for_each_entry_safe(cfilter, node,
3554 &vf->cloud_filter_list, cloud_node) {
3555 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3556
3557 if (!vsi) {
3558 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3559 vf->vf_id, cfilter->seid);
3560 continue;
3561 }
3562
3563 if (cfilter->dst_port)
3564 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3565 false);
3566 else
3567 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3568 if (ret)
3569 dev_err(&pf->pdev->dev,
3570 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3571 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3572 i40e_aq_str(&pf->hw,
3573 pf->hw.aq.asq_last_status));
3574
3575 hlist_del(&cfilter->cloud_node);
3576 kfree(cfilter);
3577 vf->num_cloud_filters--;
3578 }
3579 }
3580
3581 /**
3582 * i40e_vc_del_cloud_filter
3583 * @vf: pointer to the VF info
3584 * @msg: pointer to the msg buffer
3585 *
3586 * This function deletes a cloud filter programmed as TC filter for ADq
3587 **/
i40e_vc_del_cloud_filter(struct i40e_vf * vf,u8 * msg)3588 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3589 {
3590 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3591 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3592 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3593 struct i40e_cloud_filter cfilter, *cf = NULL;
3594 struct i40e_pf *pf = vf->pf;
3595 struct i40e_vsi *vsi = NULL;
3596 struct hlist_node *node;
3597 i40e_status aq_ret = 0;
3598 int i, ret;
3599
3600 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3601 aq_ret = I40E_ERR_PARAM;
3602 goto err;
3603 }
3604
3605 if (!vf->adq_enabled) {
3606 dev_info(&pf->pdev->dev,
3607 "VF %d: ADq not enabled, can't apply cloud filter\n",
3608 vf->vf_id);
3609 aq_ret = I40E_ERR_PARAM;
3610 goto err;
3611 }
3612
3613 if (i40e_validate_cloud_filter(vf, vcf)) {
3614 dev_info(&pf->pdev->dev,
3615 "VF %d: Invalid input, can't apply cloud filter\n",
3616 vf->vf_id);
3617 aq_ret = I40E_ERR_PARAM;
3618 goto err;
3619 }
3620
3621 memset(&cfilter, 0, sizeof(cfilter));
3622 /* parse destination mac address */
3623 for (i = 0; i < ETH_ALEN; i++)
3624 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3625
3626 /* parse source mac address */
3627 for (i = 0; i < ETH_ALEN; i++)
3628 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3629
3630 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3631 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3632 cfilter.src_port = mask.src_port & tcf.src_port;
3633
3634 switch (vcf->flow_type) {
3635 case VIRTCHNL_TCP_V4_FLOW:
3636 cfilter.n_proto = ETH_P_IP;
3637 if (mask.dst_ip[0] & tcf.dst_ip[0])
3638 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3639 ARRAY_SIZE(tcf.dst_ip));
3640 else if (mask.src_ip[0] & tcf.dst_ip[0])
3641 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3642 ARRAY_SIZE(tcf.dst_ip));
3643 break;
3644 case VIRTCHNL_TCP_V6_FLOW:
3645 cfilter.n_proto = ETH_P_IPV6;
3646 if (mask.dst_ip[3] & tcf.dst_ip[3])
3647 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3648 sizeof(cfilter.ip.v6.dst_ip6));
3649 if (mask.src_ip[3] & tcf.src_ip[3])
3650 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3651 sizeof(cfilter.ip.v6.src_ip6));
3652 break;
3653 default:
3654 /* TC filter can be configured based on different combinations
3655 * and in this case IP is not a part of filter config
3656 */
3657 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3658 vf->vf_id);
3659 }
3660
3661 /* get the vsi to which the tc belongs to */
3662 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3663 cfilter.seid = vsi->seid;
3664 cfilter.flags = vcf->field_flags;
3665
3666 /* Deleting TC filter */
3667 if (tcf.dst_port)
3668 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3669 else
3670 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3671 if (ret) {
3672 dev_err(&pf->pdev->dev,
3673 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3674 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3675 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3676 goto err;
3677 }
3678
3679 hlist_for_each_entry_safe(cf, node,
3680 &vf->cloud_filter_list, cloud_node) {
3681 if (cf->seid != cfilter.seid)
3682 continue;
3683 if (mask.dst_port)
3684 if (cfilter.dst_port != cf->dst_port)
3685 continue;
3686 if (mask.dst_mac[0])
3687 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3688 continue;
3689 /* for ipv4 data to be valid, only first byte of mask is set */
3690 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3691 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3692 ARRAY_SIZE(tcf.dst_ip)))
3693 continue;
3694 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3695 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3696 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3697 sizeof(cfilter.ip.v6.src_ip6)))
3698 continue;
3699 if (mask.vlan_id)
3700 if (cfilter.vlan_id != cf->vlan_id)
3701 continue;
3702
3703 hlist_del(&cf->cloud_node);
3704 kfree(cf);
3705 vf->num_cloud_filters--;
3706 }
3707
3708 err:
3709 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3710 aq_ret);
3711 }
3712
3713 /**
3714 * i40e_vc_add_cloud_filter
3715 * @vf: pointer to the VF info
3716 * @msg: pointer to the msg buffer
3717 *
3718 * This function adds a cloud filter programmed as TC filter for ADq
3719 **/
i40e_vc_add_cloud_filter(struct i40e_vf * vf,u8 * msg)3720 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3721 {
3722 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3723 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3724 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3725 struct i40e_cloud_filter *cfilter = NULL;
3726 struct i40e_pf *pf = vf->pf;
3727 struct i40e_vsi *vsi = NULL;
3728 i40e_status aq_ret = 0;
3729 int i, ret;
3730
3731 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3732 aq_ret = I40E_ERR_PARAM;
3733 goto err_out;
3734 }
3735
3736 if (!vf->adq_enabled) {
3737 dev_info(&pf->pdev->dev,
3738 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3739 vf->vf_id);
3740 aq_ret = I40E_ERR_PARAM;
3741 goto err_out;
3742 }
3743
3744 if (i40e_validate_cloud_filter(vf, vcf)) {
3745 dev_info(&pf->pdev->dev,
3746 "VF %d: Invalid input/s, can't apply cloud filter\n",
3747 vf->vf_id);
3748 aq_ret = I40E_ERR_PARAM;
3749 goto err_out;
3750 }
3751
3752 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3753 if (!cfilter)
3754 return -ENOMEM;
3755
3756 /* parse destination mac address */
3757 for (i = 0; i < ETH_ALEN; i++)
3758 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3759
3760 /* parse source mac address */
3761 for (i = 0; i < ETH_ALEN; i++)
3762 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3763
3764 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3765 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3766 cfilter->src_port = mask.src_port & tcf.src_port;
3767
3768 switch (vcf->flow_type) {
3769 case VIRTCHNL_TCP_V4_FLOW:
3770 cfilter->n_proto = ETH_P_IP;
3771 if (mask.dst_ip[0] & tcf.dst_ip[0])
3772 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3773 ARRAY_SIZE(tcf.dst_ip));
3774 else if (mask.src_ip[0] & tcf.dst_ip[0])
3775 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3776 ARRAY_SIZE(tcf.dst_ip));
3777 break;
3778 case VIRTCHNL_TCP_V6_FLOW:
3779 cfilter->n_proto = ETH_P_IPV6;
3780 if (mask.dst_ip[3] & tcf.dst_ip[3])
3781 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3782 sizeof(cfilter->ip.v6.dst_ip6));
3783 if (mask.src_ip[3] & tcf.src_ip[3])
3784 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3785 sizeof(cfilter->ip.v6.src_ip6));
3786 break;
3787 default:
3788 /* TC filter can be configured based on different combinations
3789 * and in this case IP is not a part of filter config
3790 */
3791 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3792 vf->vf_id);
3793 }
3794
3795 /* get the VSI to which the TC belongs to */
3796 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3797 cfilter->seid = vsi->seid;
3798 cfilter->flags = vcf->field_flags;
3799
3800 /* Adding cloud filter programmed as TC filter */
3801 if (tcf.dst_port)
3802 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3803 else
3804 ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3805 if (ret) {
3806 dev_err(&pf->pdev->dev,
3807 "VF %d: Failed to add cloud filter, err %s aq_err %s\n",
3808 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3809 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3810 goto err_free;
3811 }
3812
3813 INIT_HLIST_NODE(&cfilter->cloud_node);
3814 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3815 /* release the pointer passing it to the collection */
3816 cfilter = NULL;
3817 vf->num_cloud_filters++;
3818 err_free:
3819 kfree(cfilter);
3820 err_out:
3821 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
3822 aq_ret);
3823 }
3824
3825 /**
3826 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
3827 * @vf: pointer to the VF info
3828 * @msg: pointer to the msg buffer
3829 **/
i40e_vc_add_qch_msg(struct i40e_vf * vf,u8 * msg)3830 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
3831 {
3832 struct virtchnl_tc_info *tci =
3833 (struct virtchnl_tc_info *)msg;
3834 struct i40e_pf *pf = vf->pf;
3835 struct i40e_link_status *ls = &pf->hw.phy.link_info;
3836 int i, adq_request_qps = 0;
3837 i40e_status aq_ret = 0;
3838 u64 speed = 0;
3839
3840 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3841 aq_ret = I40E_ERR_PARAM;
3842 goto err;
3843 }
3844
3845 /* ADq cannot be applied if spoof check is ON */
3846 if (vf->spoofchk) {
3847 dev_err(&pf->pdev->dev,
3848 "Spoof check is ON, turn it OFF to enable ADq\n");
3849 aq_ret = I40E_ERR_PARAM;
3850 goto err;
3851 }
3852
3853 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
3854 dev_err(&pf->pdev->dev,
3855 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
3856 vf->vf_id);
3857 aq_ret = I40E_ERR_PARAM;
3858 goto err;
3859 }
3860
3861 /* max number of traffic classes for VF currently capped at 4 */
3862 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
3863 dev_err(&pf->pdev->dev,
3864 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
3865 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
3866 aq_ret = I40E_ERR_PARAM;
3867 goto err;
3868 }
3869
3870 /* validate queues for each TC */
3871 for (i = 0; i < tci->num_tc; i++)
3872 if (!tci->list[i].count ||
3873 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
3874 dev_err(&pf->pdev->dev,
3875 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
3876 vf->vf_id, i, tci->list[i].count,
3877 I40E_DEFAULT_QUEUES_PER_VF);
3878 aq_ret = I40E_ERR_PARAM;
3879 goto err;
3880 }
3881
3882 /* need Max VF queues but already have default number of queues */
3883 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
3884
3885 if (pf->queues_left < adq_request_qps) {
3886 dev_err(&pf->pdev->dev,
3887 "No queues left to allocate to VF %d\n",
3888 vf->vf_id);
3889 aq_ret = I40E_ERR_PARAM;
3890 goto err;
3891 } else {
3892 /* we need to allocate max VF queues to enable ADq so as to
3893 * make sure ADq enabled VF always gets back queues when it
3894 * goes through a reset.
3895 */
3896 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
3897 }
3898
3899 /* get link speed in MB to validate rate limit */
3900 switch (ls->link_speed) {
3901 case VIRTCHNL_LINK_SPEED_100MB:
3902 speed = SPEED_100;
3903 break;
3904 case VIRTCHNL_LINK_SPEED_1GB:
3905 speed = SPEED_1000;
3906 break;
3907 case VIRTCHNL_LINK_SPEED_10GB:
3908 speed = SPEED_10000;
3909 break;
3910 case VIRTCHNL_LINK_SPEED_20GB:
3911 speed = SPEED_20000;
3912 break;
3913 case VIRTCHNL_LINK_SPEED_25GB:
3914 speed = SPEED_25000;
3915 break;
3916 case VIRTCHNL_LINK_SPEED_40GB:
3917 speed = SPEED_40000;
3918 break;
3919 default:
3920 dev_err(&pf->pdev->dev,
3921 "Cannot detect link speed\n");
3922 aq_ret = I40E_ERR_PARAM;
3923 goto err;
3924 }
3925
3926 /* parse data from the queue channel info */
3927 vf->num_tc = tci->num_tc;
3928 for (i = 0; i < vf->num_tc; i++) {
3929 if (tci->list[i].max_tx_rate) {
3930 if (tci->list[i].max_tx_rate > speed) {
3931 dev_err(&pf->pdev->dev,
3932 "Invalid max tx rate %llu specified for VF %d.",
3933 tci->list[i].max_tx_rate,
3934 vf->vf_id);
3935 aq_ret = I40E_ERR_PARAM;
3936 goto err;
3937 } else {
3938 vf->ch[i].max_tx_rate =
3939 tci->list[i].max_tx_rate;
3940 }
3941 }
3942 vf->ch[i].num_qps = tci->list[i].count;
3943 }
3944
3945 /* set this flag only after making sure all inputs are sane */
3946 vf->adq_enabled = true;
3947
3948 /* reset the VF in order to allocate resources */
3949 i40e_vc_reset_vf(vf, true);
3950
3951 return I40E_SUCCESS;
3952
3953 /* send the response to the VF */
3954 err:
3955 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
3956 aq_ret);
3957 }
3958
3959 /**
3960 * i40e_vc_del_qch_msg
3961 * @vf: pointer to the VF info
3962 * @msg: pointer to the msg buffer
3963 **/
i40e_vc_del_qch_msg(struct i40e_vf * vf,u8 * msg)3964 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
3965 {
3966 struct i40e_pf *pf = vf->pf;
3967 i40e_status aq_ret = 0;
3968
3969 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3970 aq_ret = I40E_ERR_PARAM;
3971 goto err;
3972 }
3973
3974 if (vf->adq_enabled) {
3975 i40e_del_all_cloud_filters(vf);
3976 i40e_del_qch(vf);
3977 vf->adq_enabled = false;
3978 vf->num_tc = 0;
3979 dev_info(&pf->pdev->dev,
3980 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
3981 vf->vf_id);
3982 } else {
3983 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
3984 vf->vf_id);
3985 aq_ret = I40E_ERR_PARAM;
3986 }
3987
3988 /* reset the VF in order to allocate resources */
3989 i40e_vc_reset_vf(vf, true);
3990
3991 return I40E_SUCCESS;
3992
3993 err:
3994 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
3995 aq_ret);
3996 }
3997
3998 /**
3999 * i40e_vc_process_vf_msg
4000 * @pf: pointer to the PF structure
4001 * @vf_id: source VF id
4002 * @v_opcode: operation code
4003 * @v_retval: unused return value code
4004 * @msg: pointer to the msg buffer
4005 * @msglen: msg length
4006 *
4007 * called from the common aeq/arq handler to
4008 * process request from VF
4009 **/
i40e_vc_process_vf_msg(struct i40e_pf * pf,s16 vf_id,u32 v_opcode,u32 __always_unused v_retval,u8 * msg,u16 msglen)4010 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4011 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4012 {
4013 struct i40e_hw *hw = &pf->hw;
4014 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4015 struct i40e_vf *vf;
4016 int ret;
4017
4018 pf->vf_aq_requests++;
4019 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4020 return -EINVAL;
4021 vf = &(pf->vf[local_vf_id]);
4022
4023 /* Check if VF is disabled. */
4024 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4025 return I40E_ERR_PARAM;
4026
4027 /* perform basic checks on the msg */
4028 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4029
4030 if (ret) {
4031 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
4032 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4033 local_vf_id, v_opcode, msglen);
4034 switch (ret) {
4035 case VIRTCHNL_STATUS_ERR_PARAM:
4036 return -EPERM;
4037 default:
4038 return -EINVAL;
4039 }
4040 }
4041
4042 switch (v_opcode) {
4043 case VIRTCHNL_OP_VERSION:
4044 ret = i40e_vc_get_version_msg(vf, msg);
4045 break;
4046 case VIRTCHNL_OP_GET_VF_RESOURCES:
4047 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4048 i40e_vc_notify_vf_link_state(vf);
4049 break;
4050 case VIRTCHNL_OP_RESET_VF:
4051 i40e_vc_reset_vf(vf, false);
4052 ret = 0;
4053 break;
4054 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4055 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4056 break;
4057 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4058 ret = i40e_vc_config_queues_msg(vf, msg);
4059 break;
4060 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4061 ret = i40e_vc_config_irq_map_msg(vf, msg);
4062 break;
4063 case VIRTCHNL_OP_ENABLE_QUEUES:
4064 ret = i40e_vc_enable_queues_msg(vf, msg);
4065 i40e_vc_notify_vf_link_state(vf);
4066 break;
4067 case VIRTCHNL_OP_DISABLE_QUEUES:
4068 ret = i40e_vc_disable_queues_msg(vf, msg);
4069 break;
4070 case VIRTCHNL_OP_ADD_ETH_ADDR:
4071 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4072 break;
4073 case VIRTCHNL_OP_DEL_ETH_ADDR:
4074 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4075 break;
4076 case VIRTCHNL_OP_ADD_VLAN:
4077 ret = i40e_vc_add_vlan_msg(vf, msg);
4078 break;
4079 case VIRTCHNL_OP_DEL_VLAN:
4080 ret = i40e_vc_remove_vlan_msg(vf, msg);
4081 break;
4082 case VIRTCHNL_OP_GET_STATS:
4083 ret = i40e_vc_get_stats_msg(vf, msg);
4084 break;
4085 case VIRTCHNL_OP_IWARP:
4086 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
4087 break;
4088 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
4089 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, true);
4090 break;
4091 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
4092 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, false);
4093 break;
4094 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4095 ret = i40e_vc_config_rss_key(vf, msg);
4096 break;
4097 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4098 ret = i40e_vc_config_rss_lut(vf, msg);
4099 break;
4100 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4101 ret = i40e_vc_get_rss_hena(vf, msg);
4102 break;
4103 case VIRTCHNL_OP_SET_RSS_HENA:
4104 ret = i40e_vc_set_rss_hena(vf, msg);
4105 break;
4106 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4107 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4108 break;
4109 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4110 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4111 break;
4112 case VIRTCHNL_OP_REQUEST_QUEUES:
4113 ret = i40e_vc_request_queues_msg(vf, msg);
4114 break;
4115 case VIRTCHNL_OP_ENABLE_CHANNELS:
4116 ret = i40e_vc_add_qch_msg(vf, msg);
4117 break;
4118 case VIRTCHNL_OP_DISABLE_CHANNELS:
4119 ret = i40e_vc_del_qch_msg(vf, msg);
4120 break;
4121 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4122 ret = i40e_vc_add_cloud_filter(vf, msg);
4123 break;
4124 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4125 ret = i40e_vc_del_cloud_filter(vf, msg);
4126 break;
4127 case VIRTCHNL_OP_UNKNOWN:
4128 default:
4129 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4130 v_opcode, local_vf_id);
4131 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4132 I40E_ERR_NOT_IMPLEMENTED);
4133 break;
4134 }
4135
4136 return ret;
4137 }
4138
4139 /**
4140 * i40e_vc_process_vflr_event
4141 * @pf: pointer to the PF structure
4142 *
4143 * called from the vlfr irq handler to
4144 * free up VF resources and state variables
4145 **/
i40e_vc_process_vflr_event(struct i40e_pf * pf)4146 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4147 {
4148 struct i40e_hw *hw = &pf->hw;
4149 u32 reg, reg_idx, bit_idx;
4150 struct i40e_vf *vf;
4151 int vf_id;
4152
4153 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4154 return 0;
4155
4156 /* Re-enable the VFLR interrupt cause here, before looking for which
4157 * VF got reset. Otherwise, if another VF gets a reset while the
4158 * first one is being processed, that interrupt will be lost, and
4159 * that VF will be stuck in reset forever.
4160 */
4161 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4162 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4163 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4164 i40e_flush(hw);
4165
4166 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4167 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4168 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4169 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4170 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4171 vf = &pf->vf[vf_id];
4172 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4173 if (reg & BIT(bit_idx))
4174 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4175 i40e_reset_vf(vf, true);
4176 }
4177
4178 return 0;
4179 }
4180
4181 /**
4182 * i40e_validate_vf
4183 * @pf: the physical function
4184 * @vf_id: VF identifier
4185 *
4186 * Check that the VF is enabled and the VSI exists.
4187 *
4188 * Returns 0 on success, negative on failure
4189 **/
i40e_validate_vf(struct i40e_pf * pf,int vf_id)4190 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4191 {
4192 struct i40e_vsi *vsi;
4193 struct i40e_vf *vf;
4194 int ret = 0;
4195
4196 if (vf_id >= pf->num_alloc_vfs) {
4197 dev_err(&pf->pdev->dev,
4198 "Invalid VF Identifier %d\n", vf_id);
4199 ret = -EINVAL;
4200 goto err_out;
4201 }
4202 vf = &pf->vf[vf_id];
4203 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4204 if (!vsi)
4205 ret = -EINVAL;
4206 err_out:
4207 return ret;
4208 }
4209
4210 /**
4211 * i40e_ndo_set_vf_mac
4212 * @netdev: network interface device structure
4213 * @vf_id: VF identifier
4214 * @mac: mac address
4215 *
4216 * program VF mac address
4217 **/
i40e_ndo_set_vf_mac(struct net_device * netdev,int vf_id,u8 * mac)4218 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4219 {
4220 struct i40e_netdev_priv *np = netdev_priv(netdev);
4221 struct i40e_vsi *vsi = np->vsi;
4222 struct i40e_pf *pf = vsi->back;
4223 struct i40e_mac_filter *f;
4224 struct i40e_vf *vf;
4225 int ret = 0;
4226 struct hlist_node *h;
4227 int bkt;
4228 u8 i;
4229
4230 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4231 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4232 return -EAGAIN;
4233 }
4234
4235 /* validate the request */
4236 ret = i40e_validate_vf(pf, vf_id);
4237 if (ret)
4238 goto error_param;
4239
4240 vf = &pf->vf[vf_id];
4241
4242 /* When the VF is resetting wait until it is done.
4243 * It can take up to 200 milliseconds,
4244 * but wait for up to 300 milliseconds to be safe.
4245 * Acquire the VSI pointer only after the VF has been
4246 * properly initialized.
4247 */
4248 for (i = 0; i < 15; i++) {
4249 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4250 break;
4251 msleep(20);
4252 }
4253 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4254 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4255 vf_id);
4256 ret = -EAGAIN;
4257 goto error_param;
4258 }
4259 vsi = pf->vsi[vf->lan_vsi_idx];
4260
4261 if (is_multicast_ether_addr(mac)) {
4262 dev_err(&pf->pdev->dev,
4263 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4264 ret = -EINVAL;
4265 goto error_param;
4266 }
4267
4268 /* Lock once because below invoked function add/del_filter requires
4269 * mac_filter_hash_lock to be held
4270 */
4271 spin_lock_bh(&vsi->mac_filter_hash_lock);
4272
4273 /* delete the temporary mac address */
4274 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4275 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4276
4277 /* Delete all the filters for this VSI - we're going to kill it
4278 * anyway.
4279 */
4280 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4281 __i40e_del_filter(vsi, f);
4282
4283 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4284
4285 /* program mac filter */
4286 if (i40e_sync_vsi_filters(vsi)) {
4287 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4288 ret = -EIO;
4289 goto error_param;
4290 }
4291 ether_addr_copy(vf->default_lan_addr.addr, mac);
4292
4293 if (is_zero_ether_addr(mac)) {
4294 vf->pf_set_mac = false;
4295 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4296 } else {
4297 vf->pf_set_mac = true;
4298 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4299 mac, vf_id);
4300 }
4301
4302 /* Force the VF interface down so it has to bring up with new MAC
4303 * address
4304 */
4305 i40e_vc_reset_vf(vf, true);
4306 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4307
4308 error_param:
4309 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4310 return ret;
4311 }
4312
4313 /**
4314 * i40e_ndo_set_vf_port_vlan
4315 * @netdev: network interface device structure
4316 * @vf_id: VF identifier
4317 * @vlan_id: mac address
4318 * @qos: priority setting
4319 * @vlan_proto: vlan protocol
4320 *
4321 * program VF vlan id and/or qos
4322 **/
i40e_ndo_set_vf_port_vlan(struct net_device * netdev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)4323 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4324 u16 vlan_id, u8 qos, __be16 vlan_proto)
4325 {
4326 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4327 struct i40e_netdev_priv *np = netdev_priv(netdev);
4328 bool allmulti = false, alluni = false;
4329 struct i40e_pf *pf = np->vsi->back;
4330 struct i40e_vsi *vsi;
4331 struct i40e_vf *vf;
4332 int ret = 0;
4333
4334 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4335 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4336 return -EAGAIN;
4337 }
4338
4339 /* validate the request */
4340 ret = i40e_validate_vf(pf, vf_id);
4341 if (ret)
4342 goto error_pvid;
4343
4344 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4345 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4346 ret = -EINVAL;
4347 goto error_pvid;
4348 }
4349
4350 if (vlan_proto != htons(ETH_P_8021Q)) {
4351 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4352 ret = -EPROTONOSUPPORT;
4353 goto error_pvid;
4354 }
4355
4356 vf = &pf->vf[vf_id];
4357 vsi = pf->vsi[vf->lan_vsi_idx];
4358 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4359 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4360 vf_id);
4361 ret = -EAGAIN;
4362 goto error_pvid;
4363 }
4364
4365 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4366 /* duplicate request, so just return success */
4367 goto error_pvid;
4368
4369 /* Locked once because multiple functions below iterate list */
4370 spin_lock_bh(&vsi->mac_filter_hash_lock);
4371
4372 /* Check for condition where there was already a port VLAN ID
4373 * filter set and now it is being deleted by setting it to zero.
4374 * Additionally check for the condition where there was a port
4375 * VLAN but now there is a new and different port VLAN being set.
4376 * Before deleting all the old VLAN filters we must add new ones
4377 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4378 * MAC addresses deleted.
4379 */
4380 if ((!(vlan_id || qos) ||
4381 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4382 vsi->info.pvid) {
4383 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4384 if (ret) {
4385 dev_info(&vsi->back->pdev->dev,
4386 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4387 vsi->back->hw.aq.asq_last_status);
4388 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4389 goto error_pvid;
4390 }
4391 }
4392
4393 if (vsi->info.pvid) {
4394 /* remove all filters on the old VLAN */
4395 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4396 VLAN_VID_MASK));
4397 }
4398
4399 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4400
4401 /* disable promisc modes in case they were enabled */
4402 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4403 allmulti, alluni);
4404 if (ret) {
4405 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4406 goto error_pvid;
4407 }
4408
4409 if (vlan_id || qos)
4410 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4411 else
4412 i40e_vsi_remove_pvid(vsi);
4413 spin_lock_bh(&vsi->mac_filter_hash_lock);
4414
4415 if (vlan_id) {
4416 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4417 vlan_id, qos, vf_id);
4418
4419 /* add new VLAN filter for each MAC */
4420 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4421 if (ret) {
4422 dev_info(&vsi->back->pdev->dev,
4423 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4424 vsi->back->hw.aq.asq_last_status);
4425 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4426 goto error_pvid;
4427 }
4428
4429 /* remove the previously added non-VLAN MAC filters */
4430 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4431 }
4432
4433 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4434
4435 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4436 alluni = true;
4437
4438 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4439 allmulti = true;
4440
4441 /* Schedule the worker thread to take care of applying changes */
4442 i40e_service_event_schedule(vsi->back);
4443
4444 if (ret) {
4445 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4446 goto error_pvid;
4447 }
4448
4449 /* The Port VLAN needs to be saved across resets the same as the
4450 * default LAN MAC address.
4451 */
4452 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4453
4454 i40e_vc_reset_vf(vf, true);
4455 /* During reset the VF got a new VSI, so refresh a pointer. */
4456 vsi = pf->vsi[vf->lan_vsi_idx];
4457
4458 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4459 if (ret) {
4460 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4461 goto error_pvid;
4462 }
4463
4464 ret = 0;
4465
4466 error_pvid:
4467 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4468 return ret;
4469 }
4470
4471 /**
4472 * i40e_ndo_set_vf_bw
4473 * @netdev: network interface device structure
4474 * @vf_id: VF identifier
4475 * @min_tx_rate: Minimum Tx rate
4476 * @max_tx_rate: Maximum Tx rate
4477 *
4478 * configure VF Tx rate
4479 **/
i40e_ndo_set_vf_bw(struct net_device * netdev,int vf_id,int min_tx_rate,int max_tx_rate)4480 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4481 int max_tx_rate)
4482 {
4483 struct i40e_netdev_priv *np = netdev_priv(netdev);
4484 struct i40e_pf *pf = np->vsi->back;
4485 struct i40e_vsi *vsi;
4486 struct i40e_vf *vf;
4487 int ret = 0;
4488
4489 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4490 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4491 return -EAGAIN;
4492 }
4493
4494 /* validate the request */
4495 ret = i40e_validate_vf(pf, vf_id);
4496 if (ret)
4497 goto error;
4498
4499 if (min_tx_rate) {
4500 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4501 min_tx_rate, vf_id);
4502 ret = -EINVAL;
4503 goto error;
4504 }
4505
4506 vf = &pf->vf[vf_id];
4507 vsi = pf->vsi[vf->lan_vsi_idx];
4508 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4509 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4510 vf_id);
4511 ret = -EAGAIN;
4512 goto error;
4513 }
4514
4515 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4516 if (ret)
4517 goto error;
4518
4519 vf->tx_rate = max_tx_rate;
4520 error:
4521 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4522 return ret;
4523 }
4524
4525 /**
4526 * i40e_ndo_get_vf_config
4527 * @netdev: network interface device structure
4528 * @vf_id: VF identifier
4529 * @ivi: VF configuration structure
4530 *
4531 * return VF configuration
4532 **/
i40e_ndo_get_vf_config(struct net_device * netdev,int vf_id,struct ifla_vf_info * ivi)4533 int i40e_ndo_get_vf_config(struct net_device *netdev,
4534 int vf_id, struct ifla_vf_info *ivi)
4535 {
4536 struct i40e_netdev_priv *np = netdev_priv(netdev);
4537 struct i40e_vsi *vsi = np->vsi;
4538 struct i40e_pf *pf = vsi->back;
4539 struct i40e_vf *vf;
4540 int ret = 0;
4541
4542 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4543 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4544 return -EAGAIN;
4545 }
4546
4547 /* validate the request */
4548 ret = i40e_validate_vf(pf, vf_id);
4549 if (ret)
4550 goto error_param;
4551
4552 vf = &pf->vf[vf_id];
4553 /* first vsi is always the LAN vsi */
4554 vsi = pf->vsi[vf->lan_vsi_idx];
4555 if (!vsi) {
4556 ret = -ENOENT;
4557 goto error_param;
4558 }
4559
4560 ivi->vf = vf_id;
4561
4562 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4563
4564 ivi->max_tx_rate = vf->tx_rate;
4565 ivi->min_tx_rate = 0;
4566 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
4567 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
4568 I40E_VLAN_PRIORITY_SHIFT;
4569 if (vf->link_forced == false)
4570 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4571 else if (vf->link_up == true)
4572 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4573 else
4574 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4575 ivi->spoofchk = vf->spoofchk;
4576 ivi->trusted = vf->trusted;
4577 ret = 0;
4578
4579 error_param:
4580 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4581 return ret;
4582 }
4583
4584 /**
4585 * i40e_ndo_set_vf_link_state
4586 * @netdev: network interface device structure
4587 * @vf_id: VF identifier
4588 * @link: required link state
4589 *
4590 * Set the link state of a specified VF, regardless of physical link state
4591 **/
i40e_ndo_set_vf_link_state(struct net_device * netdev,int vf_id,int link)4592 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4593 {
4594 struct i40e_netdev_priv *np = netdev_priv(netdev);
4595 struct i40e_pf *pf = np->vsi->back;
4596 struct virtchnl_pf_event pfe;
4597 struct i40e_hw *hw = &pf->hw;
4598 struct i40e_vsi *vsi;
4599 unsigned long q_map;
4600 struct i40e_vf *vf;
4601 int abs_vf_id;
4602 int ret = 0;
4603 int tmp;
4604
4605 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4606 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4607 return -EAGAIN;
4608 }
4609
4610 /* validate the request */
4611 if (vf_id >= pf->num_alloc_vfs) {
4612 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4613 ret = -EINVAL;
4614 goto error_out;
4615 }
4616
4617 vf = &pf->vf[vf_id];
4618 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4619
4620 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4621 pfe.severity = PF_EVENT_SEVERITY_INFO;
4622
4623 switch (link) {
4624 case IFLA_VF_LINK_STATE_AUTO:
4625 vf->link_forced = false;
4626 vf->is_disabled_from_host = false;
4627 /* reset needed to reinit VF resources */
4628 i40e_vc_reset_vf(vf, true);
4629 pfe.event_data.link_event.link_status =
4630 pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
4631 pfe.event_data.link_event.link_speed =
4632 (enum virtchnl_link_speed)
4633 pf->hw.phy.link_info.link_speed;
4634 break;
4635 case IFLA_VF_LINK_STATE_ENABLE:
4636 vf->link_forced = true;
4637 vf->link_up = true;
4638 vf->is_disabled_from_host = false;
4639 /* reset needed to reinit VF resources */
4640 i40e_vc_reset_vf(vf, true);
4641 pfe.event_data.link_event.link_status = true;
4642 pfe.event_data.link_event.link_speed = VIRTCHNL_LINK_SPEED_40GB;
4643 break;
4644 case IFLA_VF_LINK_STATE_DISABLE:
4645 vf->link_forced = true;
4646 vf->link_up = false;
4647 pfe.event_data.link_event.link_status = false;
4648 pfe.event_data.link_event.link_speed = 0;
4649
4650 vsi = pf->vsi[vf->lan_vsi_idx];
4651 q_map = BIT(vsi->num_queue_pairs) - 1;
4652
4653 vf->is_disabled_from_host = true;
4654
4655 /* Try to stop both Tx&Rx rings even if one of the calls fails
4656 * to ensure we stop the rings even in case of errors.
4657 * If any of them returns with an error then the first
4658 * error that occurred will be returned.
4659 */
4660 tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false);
4661 ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false);
4662
4663 ret = tmp ? tmp : ret;
4664 break;
4665 default:
4666 ret = -EINVAL;
4667 goto error_out;
4668 }
4669 /* Notify the VF of its new link state */
4670 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4671 0, (u8 *)&pfe, sizeof(pfe), NULL);
4672
4673 error_out:
4674 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4675 return ret;
4676 }
4677
4678 /**
4679 * i40e_ndo_set_vf_spoofchk
4680 * @netdev: network interface device structure
4681 * @vf_id: VF identifier
4682 * @enable: flag to enable or disable feature
4683 *
4684 * Enable or disable VF spoof checking
4685 **/
i40e_ndo_set_vf_spoofchk(struct net_device * netdev,int vf_id,bool enable)4686 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4687 {
4688 struct i40e_netdev_priv *np = netdev_priv(netdev);
4689 struct i40e_vsi *vsi = np->vsi;
4690 struct i40e_pf *pf = vsi->back;
4691 struct i40e_vsi_context ctxt;
4692 struct i40e_hw *hw = &pf->hw;
4693 struct i40e_vf *vf;
4694 int ret = 0;
4695
4696 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4697 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4698 return -EAGAIN;
4699 }
4700
4701 /* validate the request */
4702 if (vf_id >= pf->num_alloc_vfs) {
4703 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4704 ret = -EINVAL;
4705 goto out;
4706 }
4707
4708 vf = &(pf->vf[vf_id]);
4709 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4710 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4711 vf_id);
4712 ret = -EAGAIN;
4713 goto out;
4714 }
4715
4716 if (enable == vf->spoofchk)
4717 goto out;
4718
4719 vf->spoofchk = enable;
4720 memset(&ctxt, 0, sizeof(ctxt));
4721 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4722 ctxt.pf_num = pf->hw.pf_id;
4723 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4724 if (enable)
4725 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4726 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4727 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4728 if (ret) {
4729 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4730 ret);
4731 ret = -EIO;
4732 }
4733 out:
4734 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4735 return ret;
4736 }
4737
4738 /**
4739 * i40e_ndo_set_vf_trust
4740 * @netdev: network interface device structure of the pf
4741 * @vf_id: VF identifier
4742 * @setting: trust setting
4743 *
4744 * Enable or disable VF trust setting
4745 **/
i40e_ndo_set_vf_trust(struct net_device * netdev,int vf_id,bool setting)4746 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4747 {
4748 struct i40e_netdev_priv *np = netdev_priv(netdev);
4749 struct i40e_pf *pf = np->vsi->back;
4750 struct i40e_vf *vf;
4751 int ret = 0;
4752
4753 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4754 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4755 return -EAGAIN;
4756 }
4757
4758 /* validate the request */
4759 if (vf_id >= pf->num_alloc_vfs) {
4760 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4761 ret = -EINVAL;
4762 goto out;
4763 }
4764
4765 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4766 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4767 ret = -EINVAL;
4768 goto out;
4769 }
4770
4771 vf = &pf->vf[vf_id];
4772
4773 if (setting == vf->trusted)
4774 goto out;
4775
4776 vf->trusted = setting;
4777 i40e_vc_reset_vf(vf, true);
4778 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4779 vf_id, setting ? "" : "un");
4780
4781 if (vf->adq_enabled) {
4782 if (!vf->trusted) {
4783 dev_info(&pf->pdev->dev,
4784 "VF %u no longer Trusted, deleting all cloud filters\n",
4785 vf_id);
4786 i40e_del_all_cloud_filters(vf);
4787 }
4788 }
4789
4790 out:
4791 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4792 return ret;
4793 }
4794
4795 /**
4796 * i40e_get_vf_stats - populate some stats for the VF
4797 * @netdev: the netdev of the PF
4798 * @vf_id: the host OS identifier (0-127)
4799 * @vf_stats: pointer to the OS memory to be initialized
4800 */
i40e_get_vf_stats(struct net_device * netdev,int vf_id,struct ifla_vf_stats * vf_stats)4801 int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4802 struct ifla_vf_stats *vf_stats)
4803 {
4804 struct i40e_netdev_priv *np = netdev_priv(netdev);
4805 struct i40e_pf *pf = np->vsi->back;
4806 struct i40e_eth_stats *stats;
4807 struct i40e_vsi *vsi;
4808 struct i40e_vf *vf;
4809
4810 /* validate the request */
4811 if (i40e_validate_vf(pf, vf_id))
4812 return -EINVAL;
4813
4814 vf = &pf->vf[vf_id];
4815 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4816 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4817 return -EBUSY;
4818 }
4819
4820 vsi = pf->vsi[vf->lan_vsi_idx];
4821 if (!vsi)
4822 return -EINVAL;
4823
4824 i40e_update_eth_stats(vsi);
4825 stats = &vsi->eth_stats;
4826
4827 memset(vf_stats, 0, sizeof(*vf_stats));
4828
4829 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4830 stats->rx_multicast;
4831 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
4832 stats->tx_multicast;
4833 vf_stats->rx_bytes = stats->rx_bytes;
4834 vf_stats->tx_bytes = stats->tx_bytes;
4835 vf_stats->broadcast = stats->rx_broadcast;
4836 vf_stats->multicast = stats->rx_multicast;
4837 vf_stats->rx_dropped = stats->rx_discards;
4838 vf_stats->tx_dropped = stats->tx_discards;
4839
4840 return 0;
4841 }
4842