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 (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2549 aq_ret = I40E_ERR_PARAM;
2550 goto error_param;
2551 }
2552
2553 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2554 aq_ret = I40E_ERR_PARAM;
2555 goto error_param;
2556 }
2557
2558 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2559 aq_ret = I40E_ERR_PARAM;
2560 goto error_param;
2561 }
2562
2563 /* Use the queue bit map sent by the VF */
2564 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2565 true)) {
2566 aq_ret = I40E_ERR_TIMEOUT;
2567 goto error_param;
2568 }
2569 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2570 true)) {
2571 aq_ret = I40E_ERR_TIMEOUT;
2572 goto error_param;
2573 }
2574
2575 /* need to start the rings for additional ADq VSI's as well */
2576 if (vf->adq_enabled) {
2577 /* zero belongs to LAN VSI */
2578 for (i = 1; i < vf->num_tc; i++) {
2579 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2580 aq_ret = I40E_ERR_TIMEOUT;
2581 }
2582 }
2583
2584 error_param:
2585 /* send the response to the VF */
2586 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2587 aq_ret);
2588 }
2589
2590 /**
2591 * i40e_vc_disable_queues_msg
2592 * @vf: pointer to the VF info
2593 * @msg: pointer to the msg buffer
2594 *
2595 * called from the VF to disable all or specific
2596 * queue(s)
2597 **/
i40e_vc_disable_queues_msg(struct i40e_vf * vf,u8 * msg)2598 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2599 {
2600 struct virtchnl_queue_select *vqs =
2601 (struct virtchnl_queue_select *)msg;
2602 struct i40e_pf *pf = vf->pf;
2603 i40e_status aq_ret = 0;
2604
2605 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2606 aq_ret = I40E_ERR_PARAM;
2607 goto error_param;
2608 }
2609
2610 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2611 aq_ret = I40E_ERR_PARAM;
2612 goto error_param;
2613 }
2614
2615 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2616 aq_ret = I40E_ERR_PARAM;
2617 goto error_param;
2618 }
2619
2620 /* Use the queue bit map sent by the VF */
2621 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2622 false)) {
2623 aq_ret = I40E_ERR_TIMEOUT;
2624 goto error_param;
2625 }
2626 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2627 false)) {
2628 aq_ret = I40E_ERR_TIMEOUT;
2629 goto error_param;
2630 }
2631 error_param:
2632 /* send the response to the VF */
2633 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2634 aq_ret);
2635 }
2636
2637 /**
2638 * i40e_check_enough_queue - find big enough queue number
2639 * @vf: pointer to the VF info
2640 * @needed: the number of items needed
2641 *
2642 * Returns the base item index of the queue, or negative for error
2643 **/
i40e_check_enough_queue(struct i40e_vf * vf,u16 needed)2644 static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2645 {
2646 unsigned int i, cur_queues, more, pool_size;
2647 struct i40e_lump_tracking *pile;
2648 struct i40e_pf *pf = vf->pf;
2649 struct i40e_vsi *vsi;
2650
2651 vsi = pf->vsi[vf->lan_vsi_idx];
2652 cur_queues = vsi->alloc_queue_pairs;
2653
2654 /* if current allocated queues are enough for need */
2655 if (cur_queues >= needed)
2656 return vsi->base_queue;
2657
2658 pile = pf->qp_pile;
2659 if (cur_queues > 0) {
2660 /* if the allocated queues are not zero
2661 * just check if there are enough queues for more
2662 * behind the allocated queues.
2663 */
2664 more = needed - cur_queues;
2665 for (i = vsi->base_queue + cur_queues;
2666 i < pile->num_entries; i++) {
2667 if (pile->list[i] & I40E_PILE_VALID_BIT)
2668 break;
2669
2670 if (more-- == 1)
2671 /* there is enough */
2672 return vsi->base_queue;
2673 }
2674 }
2675
2676 pool_size = 0;
2677 for (i = 0; i < pile->num_entries; i++) {
2678 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2679 pool_size = 0;
2680 continue;
2681 }
2682 if (needed <= ++pool_size)
2683 /* there is enough */
2684 return i;
2685 }
2686
2687 return -ENOMEM;
2688 }
2689
2690 /**
2691 * i40e_vc_request_queues_msg
2692 * @vf: pointer to the VF info
2693 * @msg: pointer to the msg buffer
2694 *
2695 * VFs get a default number of queues but can use this message to request a
2696 * different number. If the request is successful, PF will reset the VF and
2697 * return 0. If unsuccessful, PF will send message informing VF of number of
2698 * available queues and return result of sending VF a message.
2699 **/
i40e_vc_request_queues_msg(struct i40e_vf * vf,u8 * msg)2700 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2701 {
2702 struct virtchnl_vf_res_request *vfres =
2703 (struct virtchnl_vf_res_request *)msg;
2704 u16 req_pairs = vfres->num_queue_pairs;
2705 u8 cur_pairs = vf->num_queue_pairs;
2706 struct i40e_pf *pf = vf->pf;
2707
2708 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2709 return -EINVAL;
2710
2711 if (req_pairs > I40E_MAX_VF_QUEUES) {
2712 dev_err(&pf->pdev->dev,
2713 "VF %d tried to request more than %d queues.\n",
2714 vf->vf_id,
2715 I40E_MAX_VF_QUEUES);
2716 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2717 } else if (req_pairs - cur_pairs > pf->queues_left) {
2718 dev_warn(&pf->pdev->dev,
2719 "VF %d requested %d more queues, but only %d left.\n",
2720 vf->vf_id,
2721 req_pairs - cur_pairs,
2722 pf->queues_left);
2723 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2724 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2725 dev_warn(&pf->pdev->dev,
2726 "VF %d requested %d more queues, but there is not enough for it.\n",
2727 vf->vf_id,
2728 req_pairs - cur_pairs);
2729 vfres->num_queue_pairs = cur_pairs;
2730 } else {
2731 /* successful request */
2732 vf->num_req_queues = req_pairs;
2733 i40e_vc_reset_vf(vf, true);
2734 return 0;
2735 }
2736
2737 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2738 (u8 *)vfres, sizeof(*vfres));
2739 }
2740
2741 /**
2742 * i40e_vc_get_stats_msg
2743 * @vf: pointer to the VF info
2744 * @msg: pointer to the msg buffer
2745 *
2746 * called from the VF to get vsi stats
2747 **/
i40e_vc_get_stats_msg(struct i40e_vf * vf,u8 * msg)2748 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2749 {
2750 struct virtchnl_queue_select *vqs =
2751 (struct virtchnl_queue_select *)msg;
2752 struct i40e_pf *pf = vf->pf;
2753 struct i40e_eth_stats stats;
2754 i40e_status aq_ret = 0;
2755 struct i40e_vsi *vsi;
2756
2757 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2758
2759 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2760 aq_ret = I40E_ERR_PARAM;
2761 goto error_param;
2762 }
2763
2764 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2765 aq_ret = I40E_ERR_PARAM;
2766 goto error_param;
2767 }
2768
2769 vsi = pf->vsi[vf->lan_vsi_idx];
2770 if (!vsi) {
2771 aq_ret = I40E_ERR_PARAM;
2772 goto error_param;
2773 }
2774 i40e_update_eth_stats(vsi);
2775 stats = vsi->eth_stats;
2776
2777 error_param:
2778 /* send the response back to the VF */
2779 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2780 (u8 *)&stats, sizeof(stats));
2781 }
2782
2783 /* If the VF is not trusted restrict the number of MAC/VLAN it can program
2784 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2785 */
2786 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2787 #define I40E_VC_MAX_VLAN_PER_VF 16
2788
2789 /**
2790 * i40e_check_vf_permission
2791 * @vf: pointer to the VF info
2792 * @al: MAC address list from virtchnl
2793 *
2794 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2795 * if any address in the list is not valid. Checks the following conditions:
2796 *
2797 * 1) broadcast and zero addresses are never valid
2798 * 2) unicast addresses are not allowed if the VMM has administratively set
2799 * the VF MAC address, unless the VF is marked as privileged.
2800 * 3) There is enough space to add all the addresses.
2801 *
2802 * Note that to guarantee consistency, it is expected this function be called
2803 * while holding the mac_filter_hash_lock, as otherwise the current number of
2804 * addresses might not be accurate.
2805 **/
i40e_check_vf_permission(struct i40e_vf * vf,struct virtchnl_ether_addr_list * al)2806 static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2807 struct virtchnl_ether_addr_list *al)
2808 {
2809 struct i40e_pf *pf = vf->pf;
2810 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2811 int mac2add_cnt = 0;
2812 int i;
2813
2814 for (i = 0; i < al->num_elements; i++) {
2815 struct i40e_mac_filter *f;
2816 u8 *addr = al->list[i].addr;
2817
2818 if (is_broadcast_ether_addr(addr) ||
2819 is_zero_ether_addr(addr)) {
2820 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2821 addr);
2822 return I40E_ERR_INVALID_MAC_ADDR;
2823 }
2824
2825 /* If the host VMM administrator has set the VF MAC address
2826 * administratively via the ndo_set_vf_mac command then deny
2827 * permission to the VF to add or delete unicast MAC addresses.
2828 * Unless the VF is privileged and then it can do whatever.
2829 * The VF may request to set the MAC address filter already
2830 * assigned to it so do not return an error in that case.
2831 */
2832 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2833 !is_multicast_ether_addr(addr) && vf->pf_set_mac &&
2834 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2835 dev_err(&pf->pdev->dev,
2836 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2837 return -EPERM;
2838 }
2839
2840 /*count filters that really will be added*/
2841 f = i40e_find_mac(vsi, addr);
2842 if (!f)
2843 ++mac2add_cnt;
2844 }
2845
2846 /* If this VF is not privileged, then we can't add more than a limited
2847 * number of addresses. Check to make sure that the additions do not
2848 * push us over the limit.
2849 */
2850 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2851 (i40e_count_filters(vsi) + mac2add_cnt) >
2852 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2853 dev_err(&pf->pdev->dev,
2854 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2855 return -EPERM;
2856 }
2857 return 0;
2858 }
2859
2860 /**
2861 * i40e_vc_add_mac_addr_msg
2862 * @vf: pointer to the VF info
2863 * @msg: pointer to the msg buffer
2864 *
2865 * add guest mac address filter
2866 **/
i40e_vc_add_mac_addr_msg(struct i40e_vf * vf,u8 * msg)2867 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2868 {
2869 struct virtchnl_ether_addr_list *al =
2870 (struct virtchnl_ether_addr_list *)msg;
2871 struct i40e_pf *pf = vf->pf;
2872 struct i40e_vsi *vsi = NULL;
2873 i40e_status ret = 0;
2874 int i;
2875
2876 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
2877 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2878 ret = I40E_ERR_PARAM;
2879 goto error_param;
2880 }
2881
2882 vsi = pf->vsi[vf->lan_vsi_idx];
2883
2884 /* Lock once, because all function inside for loop accesses VSI's
2885 * MAC filter list which needs to be protected using same lock.
2886 */
2887 spin_lock_bh(&vsi->mac_filter_hash_lock);
2888
2889 ret = i40e_check_vf_permission(vf, al);
2890 if (ret) {
2891 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2892 goto error_param;
2893 }
2894
2895 /* add new addresses to the list */
2896 for (i = 0; i < al->num_elements; i++) {
2897 struct i40e_mac_filter *f;
2898
2899 f = i40e_find_mac(vsi, al->list[i].addr);
2900 if (!f) {
2901 f = i40e_add_mac_filter(vsi, al->list[i].addr);
2902
2903 if (!f) {
2904 dev_err(&pf->pdev->dev,
2905 "Unable to add MAC filter %pM for VF %d\n",
2906 al->list[i].addr, vf->vf_id);
2907 ret = I40E_ERR_PARAM;
2908 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2909 goto error_param;
2910 }
2911 if (is_valid_ether_addr(al->list[i].addr) &&
2912 is_zero_ether_addr(vf->default_lan_addr.addr))
2913 ether_addr_copy(vf->default_lan_addr.addr,
2914 al->list[i].addr);
2915 }
2916 }
2917 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2918
2919 /* program the updated filter list */
2920 ret = i40e_sync_vsi_filters(vsi);
2921 if (ret)
2922 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2923 vf->vf_id, ret);
2924
2925 error_param:
2926 /* send the response to the VF */
2927 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
2928 ret, NULL, 0);
2929 }
2930
2931 /**
2932 * i40e_vc_del_mac_addr_msg
2933 * @vf: pointer to the VF info
2934 * @msg: pointer to the msg buffer
2935 *
2936 * remove guest mac address filter
2937 **/
i40e_vc_del_mac_addr_msg(struct i40e_vf * vf,u8 * msg)2938 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2939 {
2940 struct virtchnl_ether_addr_list *al =
2941 (struct virtchnl_ether_addr_list *)msg;
2942 bool was_unimac_deleted = false;
2943 struct i40e_pf *pf = vf->pf;
2944 struct i40e_vsi *vsi = NULL;
2945 i40e_status ret = 0;
2946 int i;
2947
2948 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
2949 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2950 ret = I40E_ERR_PARAM;
2951 goto error_param;
2952 }
2953
2954 for (i = 0; i < al->num_elements; i++) {
2955 if (is_broadcast_ether_addr(al->list[i].addr) ||
2956 is_zero_ether_addr(al->list[i].addr)) {
2957 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
2958 al->list[i].addr, vf->vf_id);
2959 ret = I40E_ERR_INVALID_MAC_ADDR;
2960 goto error_param;
2961 }
2962 if (ether_addr_equal(al->list[i].addr, vf->default_lan_addr.addr))
2963 was_unimac_deleted = true;
2964 }
2965 vsi = pf->vsi[vf->lan_vsi_idx];
2966
2967 spin_lock_bh(&vsi->mac_filter_hash_lock);
2968 /* delete addresses from the list */
2969 for (i = 0; i < al->num_elements; i++)
2970 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
2971 ret = I40E_ERR_INVALID_MAC_ADDR;
2972 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2973 goto error_param;
2974 }
2975
2976 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2977
2978 /* program the updated filter list */
2979 ret = i40e_sync_vsi_filters(vsi);
2980 if (ret)
2981 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2982 vf->vf_id, ret);
2983
2984 if (vf->trusted && was_unimac_deleted) {
2985 struct i40e_mac_filter *f;
2986 struct hlist_node *h;
2987 u8 *macaddr = NULL;
2988 int bkt;
2989
2990 /* set last unicast mac address as default */
2991 spin_lock_bh(&vsi->mac_filter_hash_lock);
2992 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2993 if (is_valid_ether_addr(f->macaddr))
2994 macaddr = f->macaddr;
2995 }
2996 if (macaddr)
2997 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
2998 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2999 }
3000 error_param:
3001 /* send the response to the VF */
3002 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3003 }
3004
3005 /**
3006 * i40e_vc_add_vlan_msg
3007 * @vf: pointer to the VF info
3008 * @msg: pointer to the msg buffer
3009 *
3010 * program guest vlan id
3011 **/
i40e_vc_add_vlan_msg(struct i40e_vf * vf,u8 * msg)3012 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3013 {
3014 struct virtchnl_vlan_filter_list *vfl =
3015 (struct virtchnl_vlan_filter_list *)msg;
3016 struct i40e_pf *pf = vf->pf;
3017 struct i40e_vsi *vsi = NULL;
3018 i40e_status aq_ret = 0;
3019 int i;
3020
3021 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3022 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3023 dev_err(&pf->pdev->dev,
3024 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3025 goto error_param;
3026 }
3027 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3028 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3029 aq_ret = I40E_ERR_PARAM;
3030 goto error_param;
3031 }
3032
3033 for (i = 0; i < vfl->num_elements; i++) {
3034 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3035 aq_ret = I40E_ERR_PARAM;
3036 dev_err(&pf->pdev->dev,
3037 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3038 goto error_param;
3039 }
3040 }
3041 vsi = pf->vsi[vf->lan_vsi_idx];
3042 if (vsi->info.pvid) {
3043 aq_ret = I40E_ERR_PARAM;
3044 goto error_param;
3045 }
3046
3047 i40e_vlan_stripping_enable(vsi);
3048 for (i = 0; i < vfl->num_elements; i++) {
3049 /* add new VLAN filter */
3050 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3051 if (!ret)
3052 vf->num_vlan++;
3053
3054 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3055 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3056 true,
3057 vfl->vlan_id[i],
3058 NULL);
3059 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3060 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3061 true,
3062 vfl->vlan_id[i],
3063 NULL);
3064
3065 if (ret)
3066 dev_err(&pf->pdev->dev,
3067 "Unable to add VLAN filter %d for VF %d, error %d\n",
3068 vfl->vlan_id[i], vf->vf_id, ret);
3069 }
3070
3071 error_param:
3072 /* send the response to the VF */
3073 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3074 }
3075
3076 /**
3077 * i40e_vc_remove_vlan_msg
3078 * @vf: pointer to the VF info
3079 * @msg: pointer to the msg buffer
3080 *
3081 * remove programmed guest vlan id
3082 **/
i40e_vc_remove_vlan_msg(struct i40e_vf * vf,u8 * msg)3083 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3084 {
3085 struct virtchnl_vlan_filter_list *vfl =
3086 (struct virtchnl_vlan_filter_list *)msg;
3087 struct i40e_pf *pf = vf->pf;
3088 struct i40e_vsi *vsi = NULL;
3089 i40e_status aq_ret = 0;
3090 int i;
3091
3092 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3093 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3094 aq_ret = I40E_ERR_PARAM;
3095 goto error_param;
3096 }
3097
3098 for (i = 0; i < vfl->num_elements; i++) {
3099 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3100 aq_ret = I40E_ERR_PARAM;
3101 goto error_param;
3102 }
3103 }
3104
3105 vsi = pf->vsi[vf->lan_vsi_idx];
3106 if (vsi->info.pvid) {
3107 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3108 aq_ret = I40E_ERR_PARAM;
3109 goto error_param;
3110 }
3111
3112 for (i = 0; i < vfl->num_elements; i++) {
3113 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3114 vf->num_vlan--;
3115
3116 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3117 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3118 false,
3119 vfl->vlan_id[i],
3120 NULL);
3121 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3122 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3123 false,
3124 vfl->vlan_id[i],
3125 NULL);
3126 }
3127
3128 error_param:
3129 /* send the response to the VF */
3130 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3131 }
3132
3133 /**
3134 * i40e_vc_iwarp_msg
3135 * @vf: pointer to the VF info
3136 * @msg: pointer to the msg buffer
3137 * @msglen: msg length
3138 *
3139 * called from the VF for the iwarp msgs
3140 **/
i40e_vc_iwarp_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)3141 static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3142 {
3143 struct i40e_pf *pf = vf->pf;
3144 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3145 i40e_status aq_ret = 0;
3146
3147 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3148 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3149 aq_ret = I40E_ERR_PARAM;
3150 goto error_param;
3151 }
3152
3153 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
3154 msg, msglen);
3155
3156 error_param:
3157 /* send the response to the VF */
3158 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP,
3159 aq_ret);
3160 }
3161
3162 /**
3163 * i40e_vc_iwarp_qvmap_msg
3164 * @vf: pointer to the VF info
3165 * @msg: pointer to the msg buffer
3166 * @config: config qvmap or release it
3167 *
3168 * called from the VF for the iwarp msgs
3169 **/
i40e_vc_iwarp_qvmap_msg(struct i40e_vf * vf,u8 * msg,bool config)3170 static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3171 {
3172 struct virtchnl_iwarp_qvlist_info *qvlist_info =
3173 (struct virtchnl_iwarp_qvlist_info *)msg;
3174 i40e_status aq_ret = 0;
3175
3176 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3177 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3178 aq_ret = I40E_ERR_PARAM;
3179 goto error_param;
3180 }
3181
3182 if (config) {
3183 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
3184 aq_ret = I40E_ERR_PARAM;
3185 } else {
3186 i40e_release_iwarp_qvlist(vf);
3187 }
3188
3189 error_param:
3190 /* send the response to the VF */
3191 return i40e_vc_send_resp_to_vf(vf,
3192 config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP :
3193 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP,
3194 aq_ret);
3195 }
3196
3197 /**
3198 * i40e_vc_config_rss_key
3199 * @vf: pointer to the VF info
3200 * @msg: pointer to the msg buffer
3201 *
3202 * Configure the VF's RSS key
3203 **/
i40e_vc_config_rss_key(struct i40e_vf * vf,u8 * msg)3204 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3205 {
3206 struct virtchnl_rss_key *vrk =
3207 (struct virtchnl_rss_key *)msg;
3208 struct i40e_pf *pf = vf->pf;
3209 struct i40e_vsi *vsi = NULL;
3210 i40e_status aq_ret = 0;
3211
3212 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3213 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3214 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3215 aq_ret = I40E_ERR_PARAM;
3216 goto err;
3217 }
3218
3219 vsi = pf->vsi[vf->lan_vsi_idx];
3220 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3221 err:
3222 /* send the response to the VF */
3223 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3224 aq_ret);
3225 }
3226
3227 /**
3228 * i40e_vc_config_rss_lut
3229 * @vf: pointer to the VF info
3230 * @msg: pointer to the msg buffer
3231 *
3232 * Configure the VF's RSS LUT
3233 **/
i40e_vc_config_rss_lut(struct i40e_vf * vf,u8 * msg)3234 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3235 {
3236 struct virtchnl_rss_lut *vrl =
3237 (struct virtchnl_rss_lut *)msg;
3238 struct i40e_pf *pf = vf->pf;
3239 struct i40e_vsi *vsi = NULL;
3240 i40e_status aq_ret = 0;
3241 u16 i;
3242
3243 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3244 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3245 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3246 aq_ret = I40E_ERR_PARAM;
3247 goto err;
3248 }
3249
3250 for (i = 0; i < vrl->lut_entries; i++)
3251 if (vrl->lut[i] >= vf->num_queue_pairs) {
3252 aq_ret = I40E_ERR_PARAM;
3253 goto err;
3254 }
3255
3256 vsi = pf->vsi[vf->lan_vsi_idx];
3257 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3258 /* send the response to the VF */
3259 err:
3260 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3261 aq_ret);
3262 }
3263
3264 /**
3265 * i40e_vc_get_rss_hena
3266 * @vf: pointer to the VF info
3267 * @msg: pointer to the msg buffer
3268 *
3269 * Return the RSS HENA bits allowed by the hardware
3270 **/
i40e_vc_get_rss_hena(struct i40e_vf * vf,u8 * msg)3271 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3272 {
3273 struct virtchnl_rss_hena *vrh = NULL;
3274 struct i40e_pf *pf = vf->pf;
3275 i40e_status aq_ret = 0;
3276 int len = 0;
3277
3278 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3279 aq_ret = I40E_ERR_PARAM;
3280 goto err;
3281 }
3282 len = sizeof(struct virtchnl_rss_hena);
3283
3284 vrh = kzalloc(len, GFP_KERNEL);
3285 if (!vrh) {
3286 aq_ret = I40E_ERR_NO_MEMORY;
3287 len = 0;
3288 goto err;
3289 }
3290 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3291 err:
3292 /* send the response back to the VF */
3293 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3294 aq_ret, (u8 *)vrh, len);
3295 kfree(vrh);
3296 return aq_ret;
3297 }
3298
3299 /**
3300 * i40e_vc_set_rss_hena
3301 * @vf: pointer to the VF info
3302 * @msg: pointer to the msg buffer
3303 *
3304 * Set the RSS HENA bits for the VF
3305 **/
i40e_vc_set_rss_hena(struct i40e_vf * vf,u8 * msg)3306 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3307 {
3308 struct virtchnl_rss_hena *vrh =
3309 (struct virtchnl_rss_hena *)msg;
3310 struct i40e_pf *pf = vf->pf;
3311 struct i40e_hw *hw = &pf->hw;
3312 i40e_status aq_ret = 0;
3313
3314 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3315 aq_ret = I40E_ERR_PARAM;
3316 goto err;
3317 }
3318 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3319 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3320 (u32)(vrh->hena >> 32));
3321
3322 /* send the response to the VF */
3323 err:
3324 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3325 }
3326
3327 /**
3328 * i40e_vc_enable_vlan_stripping
3329 * @vf: pointer to the VF info
3330 * @msg: pointer to the msg buffer
3331 *
3332 * Enable vlan header stripping for the VF
3333 **/
i40e_vc_enable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3334 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3335 {
3336 i40e_status aq_ret = 0;
3337 struct i40e_vsi *vsi;
3338
3339 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3340 aq_ret = I40E_ERR_PARAM;
3341 goto err;
3342 }
3343
3344 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3345 i40e_vlan_stripping_enable(vsi);
3346
3347 /* send the response to the VF */
3348 err:
3349 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3350 aq_ret);
3351 }
3352
3353 /**
3354 * i40e_vc_disable_vlan_stripping
3355 * @vf: pointer to the VF info
3356 * @msg: pointer to the msg buffer
3357 *
3358 * Disable vlan header stripping for the VF
3359 **/
i40e_vc_disable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3360 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3361 {
3362 i40e_status aq_ret = 0;
3363 struct i40e_vsi *vsi;
3364
3365 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3366 aq_ret = I40E_ERR_PARAM;
3367 goto err;
3368 }
3369
3370 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3371 i40e_vlan_stripping_disable(vsi);
3372
3373 /* send the response to the VF */
3374 err:
3375 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3376 aq_ret);
3377 }
3378
3379 /**
3380 * i40e_validate_cloud_filter
3381 * @vf: pointer to VF structure
3382 * @tc_filter: pointer to filter requested
3383 *
3384 * This function validates cloud filter programmed as TC filter for ADq
3385 **/
i40e_validate_cloud_filter(struct i40e_vf * vf,struct virtchnl_filter * tc_filter)3386 static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3387 struct virtchnl_filter *tc_filter)
3388 {
3389 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3390 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3391 struct i40e_pf *pf = vf->pf;
3392 struct i40e_vsi *vsi = NULL;
3393 struct i40e_mac_filter *f;
3394 struct hlist_node *h;
3395 bool found = false;
3396 int bkt;
3397
3398 if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) {
3399 dev_info(&pf->pdev->dev,
3400 "VF %d: ADQ doesn't support this action (%d)\n",
3401 vf->vf_id, tc_filter->action);
3402 goto err;
3403 }
3404
3405 /* action_meta is TC number here to which the filter is applied */
3406 if (!tc_filter->action_meta ||
3407 tc_filter->action_meta > vf->num_tc) {
3408 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3409 vf->vf_id, tc_filter->action_meta);
3410 goto err;
3411 }
3412
3413 /* Check filter if it's programmed for advanced mode or basic mode.
3414 * There are two ADq modes (for VF only),
3415 * 1. Basic mode: intended to allow as many filter options as possible
3416 * to be added to a VF in Non-trusted mode. Main goal is
3417 * to add filters to its own MAC and VLAN id.
3418 * 2. Advanced mode: is for allowing filters to be applied other than
3419 * its own MAC or VLAN. This mode requires the VF to be
3420 * Trusted.
3421 */
3422 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3423 vsi = pf->vsi[vf->lan_vsi_idx];
3424 f = i40e_find_mac(vsi, data.dst_mac);
3425
3426 if (!f) {
3427 dev_info(&pf->pdev->dev,
3428 "Destination MAC %pM doesn't belong to VF %d\n",
3429 data.dst_mac, vf->vf_id);
3430 goto err;
3431 }
3432
3433 if (mask.vlan_id) {
3434 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3435 hlist) {
3436 if (f->vlan == ntohs(data.vlan_id)) {
3437 found = true;
3438 break;
3439 }
3440 }
3441 if (!found) {
3442 dev_info(&pf->pdev->dev,
3443 "VF %d doesn't have any VLAN id %u\n",
3444 vf->vf_id, ntohs(data.vlan_id));
3445 goto err;
3446 }
3447 }
3448 } else {
3449 /* Check if VF is trusted */
3450 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3451 dev_err(&pf->pdev->dev,
3452 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3453 vf->vf_id);
3454 return I40E_ERR_CONFIG;
3455 }
3456 }
3457
3458 if (mask.dst_mac[0] & data.dst_mac[0]) {
3459 if (is_broadcast_ether_addr(data.dst_mac) ||
3460 is_zero_ether_addr(data.dst_mac)) {
3461 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3462 vf->vf_id, data.dst_mac);
3463 goto err;
3464 }
3465 }
3466
3467 if (mask.src_mac[0] & data.src_mac[0]) {
3468 if (is_broadcast_ether_addr(data.src_mac) ||
3469 is_zero_ether_addr(data.src_mac)) {
3470 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3471 vf->vf_id, data.src_mac);
3472 goto err;
3473 }
3474 }
3475
3476 if (mask.dst_port & data.dst_port) {
3477 if (!data.dst_port) {
3478 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3479 vf->vf_id);
3480 goto err;
3481 }
3482 }
3483
3484 if (mask.src_port & data.src_port) {
3485 if (!data.src_port) {
3486 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3487 vf->vf_id);
3488 goto err;
3489 }
3490 }
3491
3492 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3493 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3494 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3495 vf->vf_id);
3496 goto err;
3497 }
3498
3499 if (mask.vlan_id & data.vlan_id) {
3500 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3501 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3502 vf->vf_id);
3503 goto err;
3504 }
3505 }
3506
3507 return I40E_SUCCESS;
3508 err:
3509 return I40E_ERR_CONFIG;
3510 }
3511
3512 /**
3513 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3514 * @vf: pointer to the VF info
3515 * @seid: seid of the vsi it is searching for
3516 **/
i40e_find_vsi_from_seid(struct i40e_vf * vf,u16 seid)3517 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3518 {
3519 struct i40e_pf *pf = vf->pf;
3520 struct i40e_vsi *vsi = NULL;
3521 int i;
3522
3523 for (i = 0; i < vf->num_tc ; i++) {
3524 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3525 if (vsi && vsi->seid == seid)
3526 return vsi;
3527 }
3528 return NULL;
3529 }
3530
3531 /**
3532 * i40e_del_all_cloud_filters
3533 * @vf: pointer to the VF info
3534 *
3535 * This function deletes all cloud filters
3536 **/
i40e_del_all_cloud_filters(struct i40e_vf * vf)3537 static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3538 {
3539 struct i40e_cloud_filter *cfilter = NULL;
3540 struct i40e_pf *pf = vf->pf;
3541 struct i40e_vsi *vsi = NULL;
3542 struct hlist_node *node;
3543 int ret;
3544
3545 hlist_for_each_entry_safe(cfilter, node,
3546 &vf->cloud_filter_list, cloud_node) {
3547 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3548
3549 if (!vsi) {
3550 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3551 vf->vf_id, cfilter->seid);
3552 continue;
3553 }
3554
3555 if (cfilter->dst_port)
3556 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3557 false);
3558 else
3559 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3560 if (ret)
3561 dev_err(&pf->pdev->dev,
3562 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3563 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3564 i40e_aq_str(&pf->hw,
3565 pf->hw.aq.asq_last_status));
3566
3567 hlist_del(&cfilter->cloud_node);
3568 kfree(cfilter);
3569 vf->num_cloud_filters--;
3570 }
3571 }
3572
3573 /**
3574 * i40e_vc_del_cloud_filter
3575 * @vf: pointer to the VF info
3576 * @msg: pointer to the msg buffer
3577 *
3578 * This function deletes a cloud filter programmed as TC filter for ADq
3579 **/
i40e_vc_del_cloud_filter(struct i40e_vf * vf,u8 * msg)3580 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3581 {
3582 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3583 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3584 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3585 struct i40e_cloud_filter cfilter, *cf = NULL;
3586 struct i40e_pf *pf = vf->pf;
3587 struct i40e_vsi *vsi = NULL;
3588 struct hlist_node *node;
3589 i40e_status aq_ret = 0;
3590 int i, ret;
3591
3592 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3593 aq_ret = I40E_ERR_PARAM;
3594 goto err;
3595 }
3596
3597 if (!vf->adq_enabled) {
3598 dev_info(&pf->pdev->dev,
3599 "VF %d: ADq not enabled, can't apply cloud filter\n",
3600 vf->vf_id);
3601 aq_ret = I40E_ERR_PARAM;
3602 goto err;
3603 }
3604
3605 if (i40e_validate_cloud_filter(vf, vcf)) {
3606 dev_info(&pf->pdev->dev,
3607 "VF %d: Invalid input, can't apply cloud filter\n",
3608 vf->vf_id);
3609 aq_ret = I40E_ERR_PARAM;
3610 goto err;
3611 }
3612
3613 memset(&cfilter, 0, sizeof(cfilter));
3614 /* parse destination mac address */
3615 for (i = 0; i < ETH_ALEN; i++)
3616 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3617
3618 /* parse source mac address */
3619 for (i = 0; i < ETH_ALEN; i++)
3620 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3621
3622 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3623 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3624 cfilter.src_port = mask.src_port & tcf.src_port;
3625
3626 switch (vcf->flow_type) {
3627 case VIRTCHNL_TCP_V4_FLOW:
3628 cfilter.n_proto = ETH_P_IP;
3629 if (mask.dst_ip[0] & tcf.dst_ip[0])
3630 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3631 ARRAY_SIZE(tcf.dst_ip));
3632 else if (mask.src_ip[0] & tcf.dst_ip[0])
3633 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3634 ARRAY_SIZE(tcf.dst_ip));
3635 break;
3636 case VIRTCHNL_TCP_V6_FLOW:
3637 cfilter.n_proto = ETH_P_IPV6;
3638 if (mask.dst_ip[3] & tcf.dst_ip[3])
3639 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3640 sizeof(cfilter.ip.v6.dst_ip6));
3641 if (mask.src_ip[3] & tcf.src_ip[3])
3642 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3643 sizeof(cfilter.ip.v6.src_ip6));
3644 break;
3645 default:
3646 /* TC filter can be configured based on different combinations
3647 * and in this case IP is not a part of filter config
3648 */
3649 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3650 vf->vf_id);
3651 }
3652
3653 /* get the vsi to which the tc belongs to */
3654 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3655 cfilter.seid = vsi->seid;
3656 cfilter.flags = vcf->field_flags;
3657
3658 /* Deleting TC filter */
3659 if (tcf.dst_port)
3660 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3661 else
3662 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3663 if (ret) {
3664 dev_err(&pf->pdev->dev,
3665 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3666 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3667 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3668 goto err;
3669 }
3670
3671 hlist_for_each_entry_safe(cf, node,
3672 &vf->cloud_filter_list, cloud_node) {
3673 if (cf->seid != cfilter.seid)
3674 continue;
3675 if (mask.dst_port)
3676 if (cfilter.dst_port != cf->dst_port)
3677 continue;
3678 if (mask.dst_mac[0])
3679 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3680 continue;
3681 /* for ipv4 data to be valid, only first byte of mask is set */
3682 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3683 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3684 ARRAY_SIZE(tcf.dst_ip)))
3685 continue;
3686 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3687 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3688 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3689 sizeof(cfilter.ip.v6.src_ip6)))
3690 continue;
3691 if (mask.vlan_id)
3692 if (cfilter.vlan_id != cf->vlan_id)
3693 continue;
3694
3695 hlist_del(&cf->cloud_node);
3696 kfree(cf);
3697 vf->num_cloud_filters--;
3698 }
3699
3700 err:
3701 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3702 aq_ret);
3703 }
3704
3705 /**
3706 * i40e_vc_add_cloud_filter
3707 * @vf: pointer to the VF info
3708 * @msg: pointer to the msg buffer
3709 *
3710 * This function adds a cloud filter programmed as TC filter for ADq
3711 **/
i40e_vc_add_cloud_filter(struct i40e_vf * vf,u8 * msg)3712 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3713 {
3714 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3715 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3716 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3717 struct i40e_cloud_filter *cfilter = NULL;
3718 struct i40e_pf *pf = vf->pf;
3719 struct i40e_vsi *vsi = NULL;
3720 i40e_status aq_ret = 0;
3721 int i, ret;
3722
3723 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3724 aq_ret = I40E_ERR_PARAM;
3725 goto err_out;
3726 }
3727
3728 if (!vf->adq_enabled) {
3729 dev_info(&pf->pdev->dev,
3730 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3731 vf->vf_id);
3732 aq_ret = I40E_ERR_PARAM;
3733 goto err_out;
3734 }
3735
3736 if (i40e_validate_cloud_filter(vf, vcf)) {
3737 dev_info(&pf->pdev->dev,
3738 "VF %d: Invalid input/s, can't apply cloud filter\n",
3739 vf->vf_id);
3740 aq_ret = I40E_ERR_PARAM;
3741 goto err_out;
3742 }
3743
3744 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3745 if (!cfilter)
3746 return -ENOMEM;
3747
3748 /* parse destination mac address */
3749 for (i = 0; i < ETH_ALEN; i++)
3750 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3751
3752 /* parse source mac address */
3753 for (i = 0; i < ETH_ALEN; i++)
3754 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3755
3756 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3757 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3758 cfilter->src_port = mask.src_port & tcf.src_port;
3759
3760 switch (vcf->flow_type) {
3761 case VIRTCHNL_TCP_V4_FLOW:
3762 cfilter->n_proto = ETH_P_IP;
3763 if (mask.dst_ip[0] & tcf.dst_ip[0])
3764 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3765 ARRAY_SIZE(tcf.dst_ip));
3766 else if (mask.src_ip[0] & tcf.dst_ip[0])
3767 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3768 ARRAY_SIZE(tcf.dst_ip));
3769 break;
3770 case VIRTCHNL_TCP_V6_FLOW:
3771 cfilter->n_proto = ETH_P_IPV6;
3772 if (mask.dst_ip[3] & tcf.dst_ip[3])
3773 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3774 sizeof(cfilter->ip.v6.dst_ip6));
3775 if (mask.src_ip[3] & tcf.src_ip[3])
3776 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3777 sizeof(cfilter->ip.v6.src_ip6));
3778 break;
3779 default:
3780 /* TC filter can be configured based on different combinations
3781 * and in this case IP is not a part of filter config
3782 */
3783 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3784 vf->vf_id);
3785 }
3786
3787 /* get the VSI to which the TC belongs to */
3788 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3789 cfilter->seid = vsi->seid;
3790 cfilter->flags = vcf->field_flags;
3791
3792 /* Adding cloud filter programmed as TC filter */
3793 if (tcf.dst_port)
3794 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3795 else
3796 ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3797 if (ret) {
3798 dev_err(&pf->pdev->dev,
3799 "VF %d: Failed to add cloud filter, err %s aq_err %s\n",
3800 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3801 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3802 goto err_free;
3803 }
3804
3805 INIT_HLIST_NODE(&cfilter->cloud_node);
3806 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3807 /* release the pointer passing it to the collection */
3808 cfilter = NULL;
3809 vf->num_cloud_filters++;
3810 err_free:
3811 kfree(cfilter);
3812 err_out:
3813 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
3814 aq_ret);
3815 }
3816
3817 /**
3818 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
3819 * @vf: pointer to the VF info
3820 * @msg: pointer to the msg buffer
3821 **/
i40e_vc_add_qch_msg(struct i40e_vf * vf,u8 * msg)3822 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
3823 {
3824 struct virtchnl_tc_info *tci =
3825 (struct virtchnl_tc_info *)msg;
3826 struct i40e_pf *pf = vf->pf;
3827 struct i40e_link_status *ls = &pf->hw.phy.link_info;
3828 int i, adq_request_qps = 0;
3829 i40e_status aq_ret = 0;
3830 u64 speed = 0;
3831
3832 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3833 aq_ret = I40E_ERR_PARAM;
3834 goto err;
3835 }
3836
3837 /* ADq cannot be applied if spoof check is ON */
3838 if (vf->spoofchk) {
3839 dev_err(&pf->pdev->dev,
3840 "Spoof check is ON, turn it OFF to enable ADq\n");
3841 aq_ret = I40E_ERR_PARAM;
3842 goto err;
3843 }
3844
3845 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
3846 dev_err(&pf->pdev->dev,
3847 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
3848 vf->vf_id);
3849 aq_ret = I40E_ERR_PARAM;
3850 goto err;
3851 }
3852
3853 /* max number of traffic classes for VF currently capped at 4 */
3854 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
3855 dev_err(&pf->pdev->dev,
3856 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
3857 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
3858 aq_ret = I40E_ERR_PARAM;
3859 goto err;
3860 }
3861
3862 /* validate queues for each TC */
3863 for (i = 0; i < tci->num_tc; i++)
3864 if (!tci->list[i].count ||
3865 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
3866 dev_err(&pf->pdev->dev,
3867 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
3868 vf->vf_id, i, tci->list[i].count,
3869 I40E_DEFAULT_QUEUES_PER_VF);
3870 aq_ret = I40E_ERR_PARAM;
3871 goto err;
3872 }
3873
3874 /* need Max VF queues but already have default number of queues */
3875 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
3876
3877 if (pf->queues_left < adq_request_qps) {
3878 dev_err(&pf->pdev->dev,
3879 "No queues left to allocate to VF %d\n",
3880 vf->vf_id);
3881 aq_ret = I40E_ERR_PARAM;
3882 goto err;
3883 } else {
3884 /* we need to allocate max VF queues to enable ADq so as to
3885 * make sure ADq enabled VF always gets back queues when it
3886 * goes through a reset.
3887 */
3888 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
3889 }
3890
3891 /* get link speed in MB to validate rate limit */
3892 switch (ls->link_speed) {
3893 case VIRTCHNL_LINK_SPEED_100MB:
3894 speed = SPEED_100;
3895 break;
3896 case VIRTCHNL_LINK_SPEED_1GB:
3897 speed = SPEED_1000;
3898 break;
3899 case VIRTCHNL_LINK_SPEED_10GB:
3900 speed = SPEED_10000;
3901 break;
3902 case VIRTCHNL_LINK_SPEED_20GB:
3903 speed = SPEED_20000;
3904 break;
3905 case VIRTCHNL_LINK_SPEED_25GB:
3906 speed = SPEED_25000;
3907 break;
3908 case VIRTCHNL_LINK_SPEED_40GB:
3909 speed = SPEED_40000;
3910 break;
3911 default:
3912 dev_err(&pf->pdev->dev,
3913 "Cannot detect link speed\n");
3914 aq_ret = I40E_ERR_PARAM;
3915 goto err;
3916 }
3917
3918 /* parse data from the queue channel info */
3919 vf->num_tc = tci->num_tc;
3920 for (i = 0; i < vf->num_tc; i++) {
3921 if (tci->list[i].max_tx_rate) {
3922 if (tci->list[i].max_tx_rate > speed) {
3923 dev_err(&pf->pdev->dev,
3924 "Invalid max tx rate %llu specified for VF %d.",
3925 tci->list[i].max_tx_rate,
3926 vf->vf_id);
3927 aq_ret = I40E_ERR_PARAM;
3928 goto err;
3929 } else {
3930 vf->ch[i].max_tx_rate =
3931 tci->list[i].max_tx_rate;
3932 }
3933 }
3934 vf->ch[i].num_qps = tci->list[i].count;
3935 }
3936
3937 /* set this flag only after making sure all inputs are sane */
3938 vf->adq_enabled = true;
3939
3940 /* reset the VF in order to allocate resources */
3941 i40e_vc_reset_vf(vf, true);
3942
3943 return I40E_SUCCESS;
3944
3945 /* send the response to the VF */
3946 err:
3947 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
3948 aq_ret);
3949 }
3950
3951 /**
3952 * i40e_vc_del_qch_msg
3953 * @vf: pointer to the VF info
3954 * @msg: pointer to the msg buffer
3955 **/
i40e_vc_del_qch_msg(struct i40e_vf * vf,u8 * msg)3956 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
3957 {
3958 struct i40e_pf *pf = vf->pf;
3959 i40e_status aq_ret = 0;
3960
3961 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3962 aq_ret = I40E_ERR_PARAM;
3963 goto err;
3964 }
3965
3966 if (vf->adq_enabled) {
3967 i40e_del_all_cloud_filters(vf);
3968 i40e_del_qch(vf);
3969 vf->adq_enabled = false;
3970 vf->num_tc = 0;
3971 dev_info(&pf->pdev->dev,
3972 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
3973 vf->vf_id);
3974 } else {
3975 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
3976 vf->vf_id);
3977 aq_ret = I40E_ERR_PARAM;
3978 }
3979
3980 /* reset the VF in order to allocate resources */
3981 i40e_vc_reset_vf(vf, true);
3982
3983 return I40E_SUCCESS;
3984
3985 err:
3986 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
3987 aq_ret);
3988 }
3989
3990 /**
3991 * i40e_vc_process_vf_msg
3992 * @pf: pointer to the PF structure
3993 * @vf_id: source VF id
3994 * @v_opcode: operation code
3995 * @v_retval: unused return value code
3996 * @msg: pointer to the msg buffer
3997 * @msglen: msg length
3998 *
3999 * called from the common aeq/arq handler to
4000 * process request from VF
4001 **/
i40e_vc_process_vf_msg(struct i40e_pf * pf,s16 vf_id,u32 v_opcode,u32 __always_unused v_retval,u8 * msg,u16 msglen)4002 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4003 u32 __always_unused v_retval, u8 *msg, u16 msglen)
4004 {
4005 struct i40e_hw *hw = &pf->hw;
4006 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4007 struct i40e_vf *vf;
4008 int ret;
4009
4010 pf->vf_aq_requests++;
4011 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4012 return -EINVAL;
4013 vf = &(pf->vf[local_vf_id]);
4014
4015 /* Check if VF is disabled. */
4016 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4017 return I40E_ERR_PARAM;
4018
4019 /* perform basic checks on the msg */
4020 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4021
4022 if (ret) {
4023 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
4024 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4025 local_vf_id, v_opcode, msglen);
4026 switch (ret) {
4027 case VIRTCHNL_STATUS_ERR_PARAM:
4028 return -EPERM;
4029 default:
4030 return -EINVAL;
4031 }
4032 }
4033
4034 switch (v_opcode) {
4035 case VIRTCHNL_OP_VERSION:
4036 ret = i40e_vc_get_version_msg(vf, msg);
4037 break;
4038 case VIRTCHNL_OP_GET_VF_RESOURCES:
4039 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4040 i40e_vc_notify_vf_link_state(vf);
4041 break;
4042 case VIRTCHNL_OP_RESET_VF:
4043 i40e_vc_reset_vf(vf, false);
4044 ret = 0;
4045 break;
4046 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4047 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4048 break;
4049 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4050 ret = i40e_vc_config_queues_msg(vf, msg);
4051 break;
4052 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4053 ret = i40e_vc_config_irq_map_msg(vf, msg);
4054 break;
4055 case VIRTCHNL_OP_ENABLE_QUEUES:
4056 ret = i40e_vc_enable_queues_msg(vf, msg);
4057 i40e_vc_notify_vf_link_state(vf);
4058 break;
4059 case VIRTCHNL_OP_DISABLE_QUEUES:
4060 ret = i40e_vc_disable_queues_msg(vf, msg);
4061 break;
4062 case VIRTCHNL_OP_ADD_ETH_ADDR:
4063 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4064 break;
4065 case VIRTCHNL_OP_DEL_ETH_ADDR:
4066 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4067 break;
4068 case VIRTCHNL_OP_ADD_VLAN:
4069 ret = i40e_vc_add_vlan_msg(vf, msg);
4070 break;
4071 case VIRTCHNL_OP_DEL_VLAN:
4072 ret = i40e_vc_remove_vlan_msg(vf, msg);
4073 break;
4074 case VIRTCHNL_OP_GET_STATS:
4075 ret = i40e_vc_get_stats_msg(vf, msg);
4076 break;
4077 case VIRTCHNL_OP_IWARP:
4078 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
4079 break;
4080 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
4081 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, true);
4082 break;
4083 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
4084 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, false);
4085 break;
4086 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4087 ret = i40e_vc_config_rss_key(vf, msg);
4088 break;
4089 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4090 ret = i40e_vc_config_rss_lut(vf, msg);
4091 break;
4092 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4093 ret = i40e_vc_get_rss_hena(vf, msg);
4094 break;
4095 case VIRTCHNL_OP_SET_RSS_HENA:
4096 ret = i40e_vc_set_rss_hena(vf, msg);
4097 break;
4098 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4099 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4100 break;
4101 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4102 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4103 break;
4104 case VIRTCHNL_OP_REQUEST_QUEUES:
4105 ret = i40e_vc_request_queues_msg(vf, msg);
4106 break;
4107 case VIRTCHNL_OP_ENABLE_CHANNELS:
4108 ret = i40e_vc_add_qch_msg(vf, msg);
4109 break;
4110 case VIRTCHNL_OP_DISABLE_CHANNELS:
4111 ret = i40e_vc_del_qch_msg(vf, msg);
4112 break;
4113 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4114 ret = i40e_vc_add_cloud_filter(vf, msg);
4115 break;
4116 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4117 ret = i40e_vc_del_cloud_filter(vf, msg);
4118 break;
4119 case VIRTCHNL_OP_UNKNOWN:
4120 default:
4121 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4122 v_opcode, local_vf_id);
4123 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4124 I40E_ERR_NOT_IMPLEMENTED);
4125 break;
4126 }
4127
4128 return ret;
4129 }
4130
4131 /**
4132 * i40e_vc_process_vflr_event
4133 * @pf: pointer to the PF structure
4134 *
4135 * called from the vlfr irq handler to
4136 * free up VF resources and state variables
4137 **/
i40e_vc_process_vflr_event(struct i40e_pf * pf)4138 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4139 {
4140 struct i40e_hw *hw = &pf->hw;
4141 u32 reg, reg_idx, bit_idx;
4142 struct i40e_vf *vf;
4143 int vf_id;
4144
4145 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4146 return 0;
4147
4148 /* Re-enable the VFLR interrupt cause here, before looking for which
4149 * VF got reset. Otherwise, if another VF gets a reset while the
4150 * first one is being processed, that interrupt will be lost, and
4151 * that VF will be stuck in reset forever.
4152 */
4153 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4154 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4155 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4156 i40e_flush(hw);
4157
4158 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4159 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4160 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4161 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4162 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4163 vf = &pf->vf[vf_id];
4164 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4165 if (reg & BIT(bit_idx))
4166 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4167 i40e_reset_vf(vf, true);
4168 }
4169
4170 return 0;
4171 }
4172
4173 /**
4174 * i40e_validate_vf
4175 * @pf: the physical function
4176 * @vf_id: VF identifier
4177 *
4178 * Check that the VF is enabled and the VSI exists.
4179 *
4180 * Returns 0 on success, negative on failure
4181 **/
i40e_validate_vf(struct i40e_pf * pf,int vf_id)4182 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4183 {
4184 struct i40e_vsi *vsi;
4185 struct i40e_vf *vf;
4186 int ret = 0;
4187
4188 if (vf_id >= pf->num_alloc_vfs) {
4189 dev_err(&pf->pdev->dev,
4190 "Invalid VF Identifier %d\n", vf_id);
4191 ret = -EINVAL;
4192 goto err_out;
4193 }
4194 vf = &pf->vf[vf_id];
4195 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4196 if (!vsi)
4197 ret = -EINVAL;
4198 err_out:
4199 return ret;
4200 }
4201
4202 /**
4203 * i40e_ndo_set_vf_mac
4204 * @netdev: network interface device structure
4205 * @vf_id: VF identifier
4206 * @mac: mac address
4207 *
4208 * program VF mac address
4209 **/
i40e_ndo_set_vf_mac(struct net_device * netdev,int vf_id,u8 * mac)4210 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4211 {
4212 struct i40e_netdev_priv *np = netdev_priv(netdev);
4213 struct i40e_vsi *vsi = np->vsi;
4214 struct i40e_pf *pf = vsi->back;
4215 struct i40e_mac_filter *f;
4216 struct i40e_vf *vf;
4217 int ret = 0;
4218 struct hlist_node *h;
4219 int bkt;
4220 u8 i;
4221
4222 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4223 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4224 return -EAGAIN;
4225 }
4226
4227 /* validate the request */
4228 ret = i40e_validate_vf(pf, vf_id);
4229 if (ret)
4230 goto error_param;
4231
4232 vf = &pf->vf[vf_id];
4233
4234 /* When the VF is resetting wait until it is done.
4235 * It can take up to 200 milliseconds,
4236 * but wait for up to 300 milliseconds to be safe.
4237 * Acquire the VSI pointer only after the VF has been
4238 * properly initialized.
4239 */
4240 for (i = 0; i < 15; i++) {
4241 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4242 break;
4243 msleep(20);
4244 }
4245 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4246 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4247 vf_id);
4248 ret = -EAGAIN;
4249 goto error_param;
4250 }
4251 vsi = pf->vsi[vf->lan_vsi_idx];
4252
4253 if (is_multicast_ether_addr(mac)) {
4254 dev_err(&pf->pdev->dev,
4255 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4256 ret = -EINVAL;
4257 goto error_param;
4258 }
4259
4260 /* Lock once because below invoked function add/del_filter requires
4261 * mac_filter_hash_lock to be held
4262 */
4263 spin_lock_bh(&vsi->mac_filter_hash_lock);
4264
4265 /* delete the temporary mac address */
4266 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4267 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4268
4269 /* Delete all the filters for this VSI - we're going to kill it
4270 * anyway.
4271 */
4272 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4273 __i40e_del_filter(vsi, f);
4274
4275 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4276
4277 /* program mac filter */
4278 if (i40e_sync_vsi_filters(vsi)) {
4279 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4280 ret = -EIO;
4281 goto error_param;
4282 }
4283 ether_addr_copy(vf->default_lan_addr.addr, mac);
4284
4285 if (is_zero_ether_addr(mac)) {
4286 vf->pf_set_mac = false;
4287 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4288 } else {
4289 vf->pf_set_mac = true;
4290 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4291 mac, vf_id);
4292 }
4293
4294 /* Force the VF interface down so it has to bring up with new MAC
4295 * address
4296 */
4297 i40e_vc_reset_vf(vf, true);
4298 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4299
4300 error_param:
4301 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4302 return ret;
4303 }
4304
4305 /**
4306 * i40e_ndo_set_vf_port_vlan
4307 * @netdev: network interface device structure
4308 * @vf_id: VF identifier
4309 * @vlan_id: mac address
4310 * @qos: priority setting
4311 * @vlan_proto: vlan protocol
4312 *
4313 * program VF vlan id and/or qos
4314 **/
i40e_ndo_set_vf_port_vlan(struct net_device * netdev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)4315 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4316 u16 vlan_id, u8 qos, __be16 vlan_proto)
4317 {
4318 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4319 struct i40e_netdev_priv *np = netdev_priv(netdev);
4320 bool allmulti = false, alluni = false;
4321 struct i40e_pf *pf = np->vsi->back;
4322 struct i40e_vsi *vsi;
4323 struct i40e_vf *vf;
4324 int ret = 0;
4325
4326 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4327 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4328 return -EAGAIN;
4329 }
4330
4331 /* validate the request */
4332 ret = i40e_validate_vf(pf, vf_id);
4333 if (ret)
4334 goto error_pvid;
4335
4336 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4337 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4338 ret = -EINVAL;
4339 goto error_pvid;
4340 }
4341
4342 if (vlan_proto != htons(ETH_P_8021Q)) {
4343 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4344 ret = -EPROTONOSUPPORT;
4345 goto error_pvid;
4346 }
4347
4348 vf = &pf->vf[vf_id];
4349 vsi = pf->vsi[vf->lan_vsi_idx];
4350 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4351 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4352 vf_id);
4353 ret = -EAGAIN;
4354 goto error_pvid;
4355 }
4356
4357 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4358 /* duplicate request, so just return success */
4359 goto error_pvid;
4360
4361 /* Locked once because multiple functions below iterate list */
4362 spin_lock_bh(&vsi->mac_filter_hash_lock);
4363
4364 /* Check for condition where there was already a port VLAN ID
4365 * filter set and now it is being deleted by setting it to zero.
4366 * Additionally check for the condition where there was a port
4367 * VLAN but now there is a new and different port VLAN being set.
4368 * Before deleting all the old VLAN filters we must add new ones
4369 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4370 * MAC addresses deleted.
4371 */
4372 if ((!(vlan_id || qos) ||
4373 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4374 vsi->info.pvid) {
4375 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4376 if (ret) {
4377 dev_info(&vsi->back->pdev->dev,
4378 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4379 vsi->back->hw.aq.asq_last_status);
4380 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4381 goto error_pvid;
4382 }
4383 }
4384
4385 if (vsi->info.pvid) {
4386 /* remove all filters on the old VLAN */
4387 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4388 VLAN_VID_MASK));
4389 }
4390
4391 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4392
4393 /* disable promisc modes in case they were enabled */
4394 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4395 allmulti, alluni);
4396 if (ret) {
4397 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4398 goto error_pvid;
4399 }
4400
4401 if (vlan_id || qos)
4402 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4403 else
4404 i40e_vsi_remove_pvid(vsi);
4405 spin_lock_bh(&vsi->mac_filter_hash_lock);
4406
4407 if (vlan_id) {
4408 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4409 vlan_id, qos, vf_id);
4410
4411 /* add new VLAN filter for each MAC */
4412 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4413 if (ret) {
4414 dev_info(&vsi->back->pdev->dev,
4415 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4416 vsi->back->hw.aq.asq_last_status);
4417 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4418 goto error_pvid;
4419 }
4420
4421 /* remove the previously added non-VLAN MAC filters */
4422 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4423 }
4424
4425 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4426
4427 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4428 alluni = true;
4429
4430 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4431 allmulti = true;
4432
4433 /* Schedule the worker thread to take care of applying changes */
4434 i40e_service_event_schedule(vsi->back);
4435
4436 if (ret) {
4437 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4438 goto error_pvid;
4439 }
4440
4441 /* The Port VLAN needs to be saved across resets the same as the
4442 * default LAN MAC address.
4443 */
4444 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4445
4446 i40e_vc_reset_vf(vf, true);
4447 /* During reset the VF got a new VSI, so refresh a pointer. */
4448 vsi = pf->vsi[vf->lan_vsi_idx];
4449
4450 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4451 if (ret) {
4452 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4453 goto error_pvid;
4454 }
4455
4456 ret = 0;
4457
4458 error_pvid:
4459 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4460 return ret;
4461 }
4462
4463 /**
4464 * i40e_ndo_set_vf_bw
4465 * @netdev: network interface device structure
4466 * @vf_id: VF identifier
4467 * @min_tx_rate: Minimum Tx rate
4468 * @max_tx_rate: Maximum Tx rate
4469 *
4470 * configure VF Tx rate
4471 **/
i40e_ndo_set_vf_bw(struct net_device * netdev,int vf_id,int min_tx_rate,int max_tx_rate)4472 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4473 int max_tx_rate)
4474 {
4475 struct i40e_netdev_priv *np = netdev_priv(netdev);
4476 struct i40e_pf *pf = np->vsi->back;
4477 struct i40e_vsi *vsi;
4478 struct i40e_vf *vf;
4479 int ret = 0;
4480
4481 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4482 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4483 return -EAGAIN;
4484 }
4485
4486 /* validate the request */
4487 ret = i40e_validate_vf(pf, vf_id);
4488 if (ret)
4489 goto error;
4490
4491 if (min_tx_rate) {
4492 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4493 min_tx_rate, vf_id);
4494 ret = -EINVAL;
4495 goto error;
4496 }
4497
4498 vf = &pf->vf[vf_id];
4499 vsi = pf->vsi[vf->lan_vsi_idx];
4500 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4501 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4502 vf_id);
4503 ret = -EAGAIN;
4504 goto error;
4505 }
4506
4507 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4508 if (ret)
4509 goto error;
4510
4511 vf->tx_rate = max_tx_rate;
4512 error:
4513 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4514 return ret;
4515 }
4516
4517 /**
4518 * i40e_ndo_get_vf_config
4519 * @netdev: network interface device structure
4520 * @vf_id: VF identifier
4521 * @ivi: VF configuration structure
4522 *
4523 * return VF configuration
4524 **/
i40e_ndo_get_vf_config(struct net_device * netdev,int vf_id,struct ifla_vf_info * ivi)4525 int i40e_ndo_get_vf_config(struct net_device *netdev,
4526 int vf_id, struct ifla_vf_info *ivi)
4527 {
4528 struct i40e_netdev_priv *np = netdev_priv(netdev);
4529 struct i40e_vsi *vsi = np->vsi;
4530 struct i40e_pf *pf = vsi->back;
4531 struct i40e_vf *vf;
4532 int ret = 0;
4533
4534 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4535 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4536 return -EAGAIN;
4537 }
4538
4539 /* validate the request */
4540 ret = i40e_validate_vf(pf, vf_id);
4541 if (ret)
4542 goto error_param;
4543
4544 vf = &pf->vf[vf_id];
4545 /* first vsi is always the LAN vsi */
4546 vsi = pf->vsi[vf->lan_vsi_idx];
4547 if (!vsi) {
4548 ret = -ENOENT;
4549 goto error_param;
4550 }
4551
4552 ivi->vf = vf_id;
4553
4554 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4555
4556 ivi->max_tx_rate = vf->tx_rate;
4557 ivi->min_tx_rate = 0;
4558 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
4559 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
4560 I40E_VLAN_PRIORITY_SHIFT;
4561 if (vf->link_forced == false)
4562 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4563 else if (vf->link_up == true)
4564 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4565 else
4566 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4567 ivi->spoofchk = vf->spoofchk;
4568 ivi->trusted = vf->trusted;
4569 ret = 0;
4570
4571 error_param:
4572 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4573 return ret;
4574 }
4575
4576 /**
4577 * i40e_ndo_set_vf_link_state
4578 * @netdev: network interface device structure
4579 * @vf_id: VF identifier
4580 * @link: required link state
4581 *
4582 * Set the link state of a specified VF, regardless of physical link state
4583 **/
i40e_ndo_set_vf_link_state(struct net_device * netdev,int vf_id,int link)4584 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4585 {
4586 struct i40e_netdev_priv *np = netdev_priv(netdev);
4587 struct i40e_pf *pf = np->vsi->back;
4588 struct virtchnl_pf_event pfe;
4589 struct i40e_hw *hw = &pf->hw;
4590 struct i40e_vf *vf;
4591 int abs_vf_id;
4592 int ret = 0;
4593
4594 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4595 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4596 return -EAGAIN;
4597 }
4598
4599 /* validate the request */
4600 if (vf_id >= pf->num_alloc_vfs) {
4601 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4602 ret = -EINVAL;
4603 goto error_out;
4604 }
4605
4606 vf = &pf->vf[vf_id];
4607 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4608
4609 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4610 pfe.severity = PF_EVENT_SEVERITY_INFO;
4611
4612 switch (link) {
4613 case IFLA_VF_LINK_STATE_AUTO:
4614 vf->link_forced = false;
4615 pfe.event_data.link_event.link_status =
4616 pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
4617 pfe.event_data.link_event.link_speed =
4618 (enum virtchnl_link_speed)
4619 pf->hw.phy.link_info.link_speed;
4620 break;
4621 case IFLA_VF_LINK_STATE_ENABLE:
4622 vf->link_forced = true;
4623 vf->link_up = true;
4624 pfe.event_data.link_event.link_status = true;
4625 pfe.event_data.link_event.link_speed = VIRTCHNL_LINK_SPEED_40GB;
4626 break;
4627 case IFLA_VF_LINK_STATE_DISABLE:
4628 vf->link_forced = true;
4629 vf->link_up = false;
4630 pfe.event_data.link_event.link_status = false;
4631 pfe.event_data.link_event.link_speed = 0;
4632 break;
4633 default:
4634 ret = -EINVAL;
4635 goto error_out;
4636 }
4637 /* Notify the VF of its new link state */
4638 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4639 0, (u8 *)&pfe, sizeof(pfe), NULL);
4640
4641 error_out:
4642 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4643 return ret;
4644 }
4645
4646 /**
4647 * i40e_ndo_set_vf_spoofchk
4648 * @netdev: network interface device structure
4649 * @vf_id: VF identifier
4650 * @enable: flag to enable or disable feature
4651 *
4652 * Enable or disable VF spoof checking
4653 **/
i40e_ndo_set_vf_spoofchk(struct net_device * netdev,int vf_id,bool enable)4654 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4655 {
4656 struct i40e_netdev_priv *np = netdev_priv(netdev);
4657 struct i40e_vsi *vsi = np->vsi;
4658 struct i40e_pf *pf = vsi->back;
4659 struct i40e_vsi_context ctxt;
4660 struct i40e_hw *hw = &pf->hw;
4661 struct i40e_vf *vf;
4662 int ret = 0;
4663
4664 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4665 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4666 return -EAGAIN;
4667 }
4668
4669 /* validate the request */
4670 if (vf_id >= pf->num_alloc_vfs) {
4671 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4672 ret = -EINVAL;
4673 goto out;
4674 }
4675
4676 vf = &(pf->vf[vf_id]);
4677 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4678 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4679 vf_id);
4680 ret = -EAGAIN;
4681 goto out;
4682 }
4683
4684 if (enable == vf->spoofchk)
4685 goto out;
4686
4687 vf->spoofchk = enable;
4688 memset(&ctxt, 0, sizeof(ctxt));
4689 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4690 ctxt.pf_num = pf->hw.pf_id;
4691 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4692 if (enable)
4693 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4694 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4695 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4696 if (ret) {
4697 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4698 ret);
4699 ret = -EIO;
4700 }
4701 out:
4702 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4703 return ret;
4704 }
4705
4706 /**
4707 * i40e_ndo_set_vf_trust
4708 * @netdev: network interface device structure of the pf
4709 * @vf_id: VF identifier
4710 * @setting: trust setting
4711 *
4712 * Enable or disable VF trust setting
4713 **/
i40e_ndo_set_vf_trust(struct net_device * netdev,int vf_id,bool setting)4714 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4715 {
4716 struct i40e_netdev_priv *np = netdev_priv(netdev);
4717 struct i40e_pf *pf = np->vsi->back;
4718 struct i40e_vf *vf;
4719 int ret = 0;
4720
4721 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4722 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4723 return -EAGAIN;
4724 }
4725
4726 /* validate the request */
4727 if (vf_id >= pf->num_alloc_vfs) {
4728 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4729 ret = -EINVAL;
4730 goto out;
4731 }
4732
4733 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4734 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4735 ret = -EINVAL;
4736 goto out;
4737 }
4738
4739 vf = &pf->vf[vf_id];
4740
4741 if (setting == vf->trusted)
4742 goto out;
4743
4744 vf->trusted = setting;
4745 i40e_vc_reset_vf(vf, true);
4746 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4747 vf_id, setting ? "" : "un");
4748
4749 if (vf->adq_enabled) {
4750 if (!vf->trusted) {
4751 dev_info(&pf->pdev->dev,
4752 "VF %u no longer Trusted, deleting all cloud filters\n",
4753 vf_id);
4754 i40e_del_all_cloud_filters(vf);
4755 }
4756 }
4757
4758 out:
4759 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4760 return ret;
4761 }
4762
4763 /**
4764 * i40e_get_vf_stats - populate some stats for the VF
4765 * @netdev: the netdev of the PF
4766 * @vf_id: the host OS identifier (0-127)
4767 * @vf_stats: pointer to the OS memory to be initialized
4768 */
i40e_get_vf_stats(struct net_device * netdev,int vf_id,struct ifla_vf_stats * vf_stats)4769 int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4770 struct ifla_vf_stats *vf_stats)
4771 {
4772 struct i40e_netdev_priv *np = netdev_priv(netdev);
4773 struct i40e_pf *pf = np->vsi->back;
4774 struct i40e_eth_stats *stats;
4775 struct i40e_vsi *vsi;
4776 struct i40e_vf *vf;
4777
4778 /* validate the request */
4779 if (i40e_validate_vf(pf, vf_id))
4780 return -EINVAL;
4781
4782 vf = &pf->vf[vf_id];
4783 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4784 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4785 return -EBUSY;
4786 }
4787
4788 vsi = pf->vsi[vf->lan_vsi_idx];
4789 if (!vsi)
4790 return -EINVAL;
4791
4792 i40e_update_eth_stats(vsi);
4793 stats = &vsi->eth_stats;
4794
4795 memset(vf_stats, 0, sizeof(*vf_stats));
4796
4797 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4798 stats->rx_multicast;
4799 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
4800 stats->tx_multicast;
4801 vf_stats->rx_bytes = stats->rx_bytes;
4802 vf_stats->tx_bytes = stats->tx_bytes;
4803 vf_stats->broadcast = stats->rx_broadcast;
4804 vf_stats->multicast = stats->rx_multicast;
4805 vf_stats->rx_dropped = stats->rx_discards;
4806 vf_stats->tx_dropped = stats->tx_discards;
4807
4808 return 0;
4809 }
4810