1 /*******************************************************************************
2 *
3 * Intel Ethernet Controller XL710 Family Linux Driver
4 * Copyright(c) 2013 - 2016 Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
17 *
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
20 *
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 ******************************************************************************/
26
27 #include "i40e.h"
28
29 /*********************notification routines***********************/
30
31 /**
32 * i40e_vc_vf_broadcast
33 * @pf: pointer to the PF structure
34 * @opcode: operation code
35 * @retval: return value
36 * @msg: pointer to the msg buffer
37 * @msglen: msg length
38 *
39 * send a message to all VFs on a given PF
40 **/
i40e_vc_vf_broadcast(struct i40e_pf * pf,enum virtchnl_ops v_opcode,i40e_status v_retval,u8 * msg,u16 msglen)41 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
42 enum virtchnl_ops v_opcode,
43 i40e_status v_retval, u8 *msg,
44 u16 msglen)
45 {
46 struct i40e_hw *hw = &pf->hw;
47 struct i40e_vf *vf = pf->vf;
48 int i;
49
50 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
51 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
52 /* Not all vfs are enabled so skip the ones that are not */
53 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
54 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
55 continue;
56
57 /* Ignore return value on purpose - a given VF may fail, but
58 * we need to keep going and send to all of them
59 */
60 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
61 msg, msglen, NULL);
62 }
63 }
64
65 /**
66 * i40e_vc_notify_vf_link_state
67 * @vf: pointer to the VF structure
68 *
69 * send a link status message to a single VF
70 **/
i40e_vc_notify_vf_link_state(struct i40e_vf * vf)71 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
72 {
73 struct virtchnl_pf_event pfe;
74 struct i40e_pf *pf = vf->pf;
75 struct i40e_hw *hw = &pf->hw;
76 struct i40e_link_status *ls = &pf->hw.phy.link_info;
77 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
78
79 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
80 pfe.severity = PF_EVENT_SEVERITY_INFO;
81 if (vf->link_forced) {
82 pfe.event_data.link_event.link_status = vf->link_up;
83 pfe.event_data.link_event.link_speed =
84 (vf->link_up ? I40E_LINK_SPEED_40GB : 0);
85 } else {
86 pfe.event_data.link_event.link_status =
87 ls->link_info & I40E_AQ_LINK_UP;
88 pfe.event_data.link_event.link_speed =
89 (enum virtchnl_link_speed)ls->link_speed;
90 }
91 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
92 0, (u8 *)&pfe, sizeof(pfe), NULL);
93 }
94
95 /**
96 * i40e_vc_notify_link_state
97 * @pf: pointer to the PF structure
98 *
99 * send a link status message to all VFs on a given PF
100 **/
i40e_vc_notify_link_state(struct i40e_pf * pf)101 void i40e_vc_notify_link_state(struct i40e_pf *pf)
102 {
103 int i;
104
105 for (i = 0; i < pf->num_alloc_vfs; i++)
106 i40e_vc_notify_vf_link_state(&pf->vf[i]);
107 }
108
109 /**
110 * i40e_vc_notify_reset
111 * @pf: pointer to the PF structure
112 *
113 * indicate a pending reset to all VFs on a given PF
114 **/
i40e_vc_notify_reset(struct i40e_pf * pf)115 void i40e_vc_notify_reset(struct i40e_pf *pf)
116 {
117 struct virtchnl_pf_event pfe;
118
119 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
120 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
121 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
122 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
123 }
124
125 /**
126 * i40e_vc_notify_vf_reset
127 * @vf: pointer to the VF structure
128 *
129 * indicate a pending reset to the given VF
130 **/
i40e_vc_notify_vf_reset(struct i40e_vf * vf)131 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
132 {
133 struct virtchnl_pf_event pfe;
134 int abs_vf_id;
135
136 /* validate the request */
137 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
138 return;
139
140 /* verify if the VF is in either init or active before proceeding */
141 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
142 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
143 return;
144
145 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
146
147 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
148 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
149 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
150 0, (u8 *)&pfe,
151 sizeof(struct virtchnl_pf_event), NULL);
152 }
153 /***********************misc routines*****************************/
154
155 /**
156 * i40e_vc_disable_vf
157 * @pf: pointer to the PF info
158 * @vf: pointer to the VF info
159 *
160 * Disable the VF through a SW reset
161 **/
i40e_vc_disable_vf(struct i40e_pf * pf,struct i40e_vf * vf)162 static inline void i40e_vc_disable_vf(struct i40e_pf *pf, struct i40e_vf *vf)
163 {
164 i40e_vc_notify_vf_reset(vf);
165 i40e_reset_vf(vf, false);
166 }
167
168 /**
169 * i40e_vc_isvalid_vsi_id
170 * @vf: pointer to the VF info
171 * @vsi_id: VF relative VSI id
172 *
173 * check for the valid VSI id
174 **/
i40e_vc_isvalid_vsi_id(struct i40e_vf * vf,u16 vsi_id)175 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
176 {
177 struct i40e_pf *pf = vf->pf;
178 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
179
180 return (vsi && (vsi->vf_id == vf->vf_id));
181 }
182
183 /**
184 * i40e_vc_isvalid_queue_id
185 * @vf: pointer to the VF info
186 * @vsi_id: vsi id
187 * @qid: vsi relative queue id
188 *
189 * check for the valid queue id
190 **/
i40e_vc_isvalid_queue_id(struct i40e_vf * vf,u16 vsi_id,u8 qid)191 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
192 u8 qid)
193 {
194 struct i40e_pf *pf = vf->pf;
195 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
196
197 return (vsi && (qid < vsi->alloc_queue_pairs));
198 }
199
200 /**
201 * i40e_vc_isvalid_vector_id
202 * @vf: pointer to the VF info
203 * @vector_id: VF relative vector id
204 *
205 * check for the valid vector id
206 **/
i40e_vc_isvalid_vector_id(struct i40e_vf * vf,u8 vector_id)207 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
208 {
209 struct i40e_pf *pf = vf->pf;
210
211 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
212 }
213
214 /***********************vf resource mgmt routines*****************/
215
216 /**
217 * i40e_vc_get_pf_queue_id
218 * @vf: pointer to the VF info
219 * @vsi_id: id of VSI as provided by the FW
220 * @vsi_queue_id: vsi relative queue id
221 *
222 * return PF relative queue id
223 **/
i40e_vc_get_pf_queue_id(struct i40e_vf * vf,u16 vsi_id,u8 vsi_queue_id)224 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
225 u8 vsi_queue_id)
226 {
227 struct i40e_pf *pf = vf->pf;
228 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
229 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
230
231 if (!vsi)
232 return pf_queue_id;
233
234 if (le16_to_cpu(vsi->info.mapping_flags) &
235 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
236 pf_queue_id =
237 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
238 else
239 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
240 vsi_queue_id;
241
242 return pf_queue_id;
243 }
244
245 /**
246 * i40e_config_irq_link_list
247 * @vf: pointer to the VF info
248 * @vsi_id: id of VSI as given by the FW
249 * @vecmap: irq map info
250 *
251 * configure irq link list from the map
252 **/
i40e_config_irq_link_list(struct i40e_vf * vf,u16 vsi_id,struct virtchnl_vector_map * vecmap)253 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
254 struct virtchnl_vector_map *vecmap)
255 {
256 unsigned long linklistmap = 0, tempmap;
257 struct i40e_pf *pf = vf->pf;
258 struct i40e_hw *hw = &pf->hw;
259 u16 vsi_queue_id, pf_queue_id;
260 enum i40e_queue_type qtype;
261 u16 next_q, vector_id;
262 u32 reg, reg_idx;
263 u16 itr_idx = 0;
264
265 vector_id = vecmap->vector_id;
266 /* setup the head */
267 if (0 == vector_id)
268 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
269 else
270 reg_idx = I40E_VPINT_LNKLSTN(
271 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
272 (vector_id - 1));
273
274 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
275 /* Special case - No queues mapped on this vector */
276 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
277 goto irq_list_done;
278 }
279 tempmap = vecmap->rxq_map;
280 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
281 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
282 vsi_queue_id));
283 }
284
285 tempmap = vecmap->txq_map;
286 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
287 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
288 vsi_queue_id + 1));
289 }
290
291 next_q = find_first_bit(&linklistmap,
292 (I40E_MAX_VSI_QP *
293 I40E_VIRTCHNL_SUPPORTED_QTYPES));
294 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
295 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
296 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
297 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
298
299 wr32(hw, reg_idx, reg);
300
301 while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
302 switch (qtype) {
303 case I40E_QUEUE_TYPE_RX:
304 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
305 itr_idx = vecmap->rxitr_idx;
306 break;
307 case I40E_QUEUE_TYPE_TX:
308 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
309 itr_idx = vecmap->txitr_idx;
310 break;
311 default:
312 break;
313 }
314
315 next_q = find_next_bit(&linklistmap,
316 (I40E_MAX_VSI_QP *
317 I40E_VIRTCHNL_SUPPORTED_QTYPES),
318 next_q + 1);
319 if (next_q <
320 (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
321 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
322 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
323 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id,
324 vsi_queue_id);
325 } else {
326 pf_queue_id = I40E_QUEUE_END_OF_LIST;
327 qtype = 0;
328 }
329
330 /* format for the RQCTL & TQCTL regs is same */
331 reg = (vector_id) |
332 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
333 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
334 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
335 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
336 wr32(hw, reg_idx, reg);
337 }
338
339 /* if the vf is running in polling mode and using interrupt zero,
340 * need to disable auto-mask on enabling zero interrupt for VFs.
341 */
342 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
343 (vector_id == 0)) {
344 reg = rd32(hw, I40E_GLINT_CTL);
345 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
346 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
347 wr32(hw, I40E_GLINT_CTL, reg);
348 }
349 }
350
351 irq_list_done:
352 i40e_flush(hw);
353 }
354
355 /**
356 * i40e_release_iwarp_qvlist
357 * @vf: pointer to the VF.
358 *
359 **/
i40e_release_iwarp_qvlist(struct i40e_vf * vf)360 static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
361 {
362 struct i40e_pf *pf = vf->pf;
363 struct virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
364 u32 msix_vf;
365 u32 i;
366
367 if (!vf->qvlist_info)
368 return;
369
370 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
371 for (i = 0; i < qvlist_info->num_vectors; i++) {
372 struct virtchnl_iwarp_qv_info *qv_info;
373 u32 next_q_index, next_q_type;
374 struct i40e_hw *hw = &pf->hw;
375 u32 v_idx, reg_idx, reg;
376
377 qv_info = &qvlist_info->qv_info[i];
378 if (!qv_info)
379 continue;
380 v_idx = qv_info->v_idx;
381 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
382 /* Figure out the queue after CEQ and make that the
383 * first queue.
384 */
385 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
386 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
387 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
388 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
389 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
390 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
391
392 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
393 reg = (next_q_index &
394 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
395 (next_q_type <<
396 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
397
398 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
399 }
400 }
401 kfree(vf->qvlist_info);
402 vf->qvlist_info = NULL;
403 }
404
405 /**
406 * i40e_config_iwarp_qvlist
407 * @vf: pointer to the VF info
408 * @qvlist_info: queue and vector list
409 *
410 * Return 0 on success or < 0 on error
411 **/
i40e_config_iwarp_qvlist(struct i40e_vf * vf,struct virtchnl_iwarp_qvlist_info * qvlist_info)412 static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
413 struct virtchnl_iwarp_qvlist_info *qvlist_info)
414 {
415 struct i40e_pf *pf = vf->pf;
416 struct i40e_hw *hw = &pf->hw;
417 struct virtchnl_iwarp_qv_info *qv_info;
418 u32 v_idx, i, reg_idx, reg;
419 u32 next_q_idx, next_q_type;
420 u32 msix_vf, size;
421
422 size = sizeof(struct virtchnl_iwarp_qvlist_info) +
423 (sizeof(struct virtchnl_iwarp_qv_info) *
424 (qvlist_info->num_vectors - 1));
425 vf->qvlist_info = kzalloc(size, GFP_KERNEL);
426 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
427
428 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
429 for (i = 0; i < qvlist_info->num_vectors; i++) {
430 qv_info = &qvlist_info->qv_info[i];
431 if (!qv_info)
432 continue;
433 v_idx = qv_info->v_idx;
434
435 /* Validate vector id belongs to this vf */
436 if (!i40e_vc_isvalid_vector_id(vf, v_idx))
437 goto err;
438
439 vf->qvlist_info->qv_info[i] = *qv_info;
440
441 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
442 /* We might be sharing the interrupt, so get the first queue
443 * index and type, push it down the list by adding the new
444 * queue on top. Also link it with the new queue in CEQCTL.
445 */
446 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
447 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
448 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
449 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
450 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
451
452 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
453 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
454 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
455 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
456 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
457 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
458 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
459 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
460
461 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
462 reg = (qv_info->ceq_idx &
463 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
464 (I40E_QUEUE_TYPE_PE_CEQ <<
465 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
466 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
467 }
468
469 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
470 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
471 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
472 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
473
474 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
475 }
476 }
477
478 return 0;
479 err:
480 kfree(vf->qvlist_info);
481 vf->qvlist_info = NULL;
482 return -EINVAL;
483 }
484
485 /**
486 * i40e_config_vsi_tx_queue
487 * @vf: pointer to the VF info
488 * @vsi_id: id of VSI as provided by the FW
489 * @vsi_queue_id: vsi relative queue index
490 * @info: config. info
491 *
492 * configure tx queue
493 **/
i40e_config_vsi_tx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_txq_info * info)494 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
495 u16 vsi_queue_id,
496 struct virtchnl_txq_info *info)
497 {
498 struct i40e_pf *pf = vf->pf;
499 struct i40e_hw *hw = &pf->hw;
500 struct i40e_hmc_obj_txq tx_ctx;
501 struct i40e_vsi *vsi;
502 u16 pf_queue_id;
503 u32 qtx_ctl;
504 int ret = 0;
505
506 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
507 ret = -ENOENT;
508 goto error_context;
509 }
510 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
511 vsi = i40e_find_vsi_from_id(pf, vsi_id);
512 if (!vsi) {
513 ret = -ENOENT;
514 goto error_context;
515 }
516
517 /* clear the context structure first */
518 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
519
520 /* only set the required fields */
521 tx_ctx.base = info->dma_ring_addr / 128;
522 tx_ctx.qlen = info->ring_len;
523 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
524 tx_ctx.rdylist_act = 0;
525 tx_ctx.head_wb_ena = info->headwb_enabled;
526 tx_ctx.head_wb_addr = info->dma_headwb_addr;
527
528 /* clear the context in the HMC */
529 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
530 if (ret) {
531 dev_err(&pf->pdev->dev,
532 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
533 pf_queue_id, ret);
534 ret = -ENOENT;
535 goto error_context;
536 }
537
538 /* set the context in the HMC */
539 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
540 if (ret) {
541 dev_err(&pf->pdev->dev,
542 "Failed to set VF LAN Tx queue context %d error: %d\n",
543 pf_queue_id, ret);
544 ret = -ENOENT;
545 goto error_context;
546 }
547
548 /* associate this queue with the PCI VF function */
549 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
550 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
551 & I40E_QTX_CTL_PF_INDX_MASK);
552 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
553 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
554 & I40E_QTX_CTL_VFVM_INDX_MASK);
555 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
556 i40e_flush(hw);
557
558 error_context:
559 return ret;
560 }
561
562 /**
563 * i40e_config_vsi_rx_queue
564 * @vf: pointer to the VF info
565 * @vsi_id: id of VSI as provided by the FW
566 * @vsi_queue_id: vsi relative queue index
567 * @info: config. info
568 *
569 * configure rx queue
570 **/
i40e_config_vsi_rx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_rxq_info * info)571 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
572 u16 vsi_queue_id,
573 struct virtchnl_rxq_info *info)
574 {
575 struct i40e_pf *pf = vf->pf;
576 struct i40e_hw *hw = &pf->hw;
577 struct i40e_hmc_obj_rxq rx_ctx;
578 u16 pf_queue_id;
579 int ret = 0;
580
581 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
582
583 /* clear the context structure first */
584 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
585
586 /* only set the required fields */
587 rx_ctx.base = info->dma_ring_addr / 128;
588 rx_ctx.qlen = info->ring_len;
589
590 if (info->splithdr_enabled) {
591 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
592 I40E_RX_SPLIT_IP |
593 I40E_RX_SPLIT_TCP_UDP |
594 I40E_RX_SPLIT_SCTP;
595 /* header length validation */
596 if (info->hdr_size > ((2 * 1024) - 64)) {
597 ret = -EINVAL;
598 goto error_param;
599 }
600 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
601
602 /* set split mode 10b */
603 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
604 }
605
606 /* databuffer length validation */
607 if (info->databuffer_size > ((16 * 1024) - 128)) {
608 ret = -EINVAL;
609 goto error_param;
610 }
611 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
612
613 /* max pkt. length validation */
614 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
615 ret = -EINVAL;
616 goto error_param;
617 }
618 rx_ctx.rxmax = info->max_pkt_size;
619
620 /* enable 32bytes desc always */
621 rx_ctx.dsize = 1;
622
623 /* default values */
624 rx_ctx.lrxqthresh = 2;
625 rx_ctx.crcstrip = 1;
626 rx_ctx.prefena = 1;
627 rx_ctx.l2tsel = 1;
628
629 /* clear the context in the HMC */
630 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
631 if (ret) {
632 dev_err(&pf->pdev->dev,
633 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
634 pf_queue_id, ret);
635 ret = -ENOENT;
636 goto error_param;
637 }
638
639 /* set the context in the HMC */
640 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
641 if (ret) {
642 dev_err(&pf->pdev->dev,
643 "Failed to set VF LAN Rx queue context %d error: %d\n",
644 pf_queue_id, ret);
645 ret = -ENOENT;
646 goto error_param;
647 }
648
649 error_param:
650 return ret;
651 }
652
653 /**
654 * i40e_alloc_vsi_res
655 * @vf: pointer to the VF info
656 * @type: type of VSI to allocate
657 *
658 * alloc VF vsi context & resources
659 **/
i40e_alloc_vsi_res(struct i40e_vf * vf,enum i40e_vsi_type type)660 static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
661 {
662 struct i40e_mac_filter *f = NULL;
663 struct i40e_pf *pf = vf->pf;
664 struct i40e_vsi *vsi;
665 int ret = 0;
666
667 vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id);
668
669 if (!vsi) {
670 dev_err(&pf->pdev->dev,
671 "add vsi failed for VF %d, aq_err %d\n",
672 vf->vf_id, pf->hw.aq.asq_last_status);
673 ret = -ENOENT;
674 goto error_alloc_vsi_res;
675 }
676 if (type == I40E_VSI_SRIOV) {
677 u64 hena = i40e_pf_get_default_rss_hena(pf);
678 u8 broadcast[ETH_ALEN];
679
680 vf->lan_vsi_idx = vsi->idx;
681 vf->lan_vsi_id = vsi->id;
682 /* If the port VLAN has been configured and then the
683 * VF driver was removed then the VSI port VLAN
684 * configuration was destroyed. Check if there is
685 * a port VLAN and restore the VSI configuration if
686 * needed.
687 */
688 if (vf->port_vlan_id)
689 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
690
691 spin_lock_bh(&vsi->mac_filter_hash_lock);
692 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
693 f = i40e_add_mac_filter(vsi,
694 vf->default_lan_addr.addr);
695 if (!f)
696 dev_info(&pf->pdev->dev,
697 "Could not add MAC filter %pM for VF %d\n",
698 vf->default_lan_addr.addr, vf->vf_id);
699 }
700 eth_broadcast_addr(broadcast);
701 f = i40e_add_mac_filter(vsi, broadcast);
702 if (!f)
703 dev_info(&pf->pdev->dev,
704 "Could not allocate VF broadcast filter\n");
705 spin_unlock_bh(&vsi->mac_filter_hash_lock);
706 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
707 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
708 }
709
710 /* program mac filter */
711 ret = i40e_sync_vsi_filters(vsi);
712 if (ret)
713 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
714
715 /* Set VF bandwidth if specified */
716 if (vf->tx_rate) {
717 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
718 vf->tx_rate / 50, 0, NULL);
719 if (ret)
720 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
721 vf->vf_id, ret);
722 }
723
724 error_alloc_vsi_res:
725 return ret;
726 }
727
728 /**
729 * i40e_enable_vf_mappings
730 * @vf: pointer to the VF info
731 *
732 * enable VF mappings
733 **/
i40e_enable_vf_mappings(struct i40e_vf * vf)734 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
735 {
736 struct i40e_pf *pf = vf->pf;
737 struct i40e_hw *hw = &pf->hw;
738 u32 reg, total_queue_pairs = 0;
739 int j;
740
741 /* Tell the hardware we're using noncontiguous mapping. HW requires
742 * that VF queues be mapped using this method, even when they are
743 * contiguous in real life
744 */
745 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
746 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
747
748 /* enable VF vplan_qtable mappings */
749 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
750 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
751
752 /* map PF queues to VF queues */
753 for (j = 0; j < pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; j++) {
754 u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id, j);
755
756 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
757 wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg);
758 total_queue_pairs++;
759 }
760
761 /* map PF queues to VSI */
762 for (j = 0; j < 7; j++) {
763 if (j * 2 >= pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs) {
764 reg = 0x07FF07FF; /* unused */
765 } else {
766 u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
767 j * 2);
768 reg = qid;
769 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
770 (j * 2) + 1);
771 reg |= qid << 16;
772 }
773 i40e_write_rx_ctl(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id),
774 reg);
775 }
776
777 i40e_flush(hw);
778 }
779
780 /**
781 * i40e_disable_vf_mappings
782 * @vf: pointer to the VF info
783 *
784 * disable VF mappings
785 **/
i40e_disable_vf_mappings(struct i40e_vf * vf)786 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
787 {
788 struct i40e_pf *pf = vf->pf;
789 struct i40e_hw *hw = &pf->hw;
790 int i;
791
792 /* disable qp mappings */
793 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
794 for (i = 0; i < I40E_MAX_VSI_QP; i++)
795 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
796 I40E_QUEUE_END_OF_LIST);
797 i40e_flush(hw);
798 }
799
800 /**
801 * i40e_free_vf_res
802 * @vf: pointer to the VF info
803 *
804 * free VF resources
805 **/
i40e_free_vf_res(struct i40e_vf * vf)806 static void i40e_free_vf_res(struct i40e_vf *vf)
807 {
808 struct i40e_pf *pf = vf->pf;
809 struct i40e_hw *hw = &pf->hw;
810 u32 reg_idx, reg;
811 int i, msix_vf;
812
813 /* Start by disabling VF's configuration API to prevent the OS from
814 * accessing the VF's VSI after it's freed / invalidated.
815 */
816 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
817
818 /* free vsi & disconnect it from the parent uplink */
819 if (vf->lan_vsi_idx) {
820 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
821 vf->lan_vsi_idx = 0;
822 vf->lan_vsi_id = 0;
823 vf->num_mac = 0;
824 }
825 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
826
827 /* disable interrupts so the VF starts in a known state */
828 for (i = 0; i < msix_vf; i++) {
829 /* format is same for both registers */
830 if (0 == i)
831 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
832 else
833 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
834 (vf->vf_id))
835 + (i - 1));
836 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
837 i40e_flush(hw);
838 }
839
840 /* clear the irq settings */
841 for (i = 0; i < msix_vf; i++) {
842 /* format is same for both registers */
843 if (0 == i)
844 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
845 else
846 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
847 (vf->vf_id))
848 + (i - 1));
849 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
850 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
851 wr32(hw, reg_idx, reg);
852 i40e_flush(hw);
853 }
854 /* reset some of the state variables keeping track of the resources */
855 vf->num_queue_pairs = 0;
856 vf->vf_states = 0;
857 }
858
859 /**
860 * i40e_alloc_vf_res
861 * @vf: pointer to the VF info
862 *
863 * allocate VF resources
864 **/
i40e_alloc_vf_res(struct i40e_vf * vf)865 static int i40e_alloc_vf_res(struct i40e_vf *vf)
866 {
867 struct i40e_pf *pf = vf->pf;
868 int total_queue_pairs = 0;
869 int ret;
870
871 /* allocate hw vsi context & associated resources */
872 ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV);
873 if (ret)
874 goto error_alloc;
875 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
876
877 if (vf->trusted)
878 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
879 else
880 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
881
882 /* store the total qps number for the runtime
883 * VF req validation
884 */
885 vf->num_queue_pairs = total_queue_pairs;
886
887 /* VF is now completely initialized */
888 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
889
890 error_alloc:
891 if (ret)
892 i40e_free_vf_res(vf);
893
894 return ret;
895 }
896
897 #define VF_DEVICE_STATUS 0xAA
898 #define VF_TRANS_PENDING_MASK 0x20
899 /**
900 * i40e_quiesce_vf_pci
901 * @vf: pointer to the VF structure
902 *
903 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
904 * if the transactions never clear.
905 **/
i40e_quiesce_vf_pci(struct i40e_vf * vf)906 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
907 {
908 struct i40e_pf *pf = vf->pf;
909 struct i40e_hw *hw = &pf->hw;
910 int vf_abs_id, i;
911 u32 reg;
912
913 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
914
915 wr32(hw, I40E_PF_PCI_CIAA,
916 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
917 for (i = 0; i < 100; i++) {
918 reg = rd32(hw, I40E_PF_PCI_CIAD);
919 if ((reg & VF_TRANS_PENDING_MASK) == 0)
920 return 0;
921 udelay(1);
922 }
923 return -EIO;
924 }
925
926 /**
927 * i40e_trigger_vf_reset
928 * @vf: pointer to the VF structure
929 * @flr: VFLR was issued or not
930 *
931 * Trigger hardware to start a reset for a particular VF. Expects the caller
932 * to wait the proper amount of time to allow hardware to reset the VF before
933 * it cleans up and restores VF functionality.
934 **/
i40e_trigger_vf_reset(struct i40e_vf * vf,bool flr)935 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
936 {
937 struct i40e_pf *pf = vf->pf;
938 struct i40e_hw *hw = &pf->hw;
939 u32 reg, reg_idx, bit_idx;
940
941 /* warn the VF */
942 clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
943
944 /* Disable VF's configuration API during reset. The flag is re-enabled
945 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
946 * It's normally disabled in i40e_free_vf_res(), but it's safer
947 * to do it earlier to give some time to finish to any VF config
948 * functions that may still be running at this point.
949 */
950 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
951
952 /* In the case of a VFLR, the HW has already reset the VF and we
953 * just need to clean up, so don't hit the VFRTRIG register.
954 */
955 if (!flr) {
956 /* reset VF using VPGEN_VFRTRIG reg */
957 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
958 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
959 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
960 i40e_flush(hw);
961 }
962 /* clear the VFLR bit in GLGEN_VFLRSTAT */
963 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
964 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
965 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
966 i40e_flush(hw);
967
968 if (i40e_quiesce_vf_pci(vf))
969 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
970 vf->vf_id);
971 }
972
973 /**
974 * i40e_cleanup_reset_vf
975 * @vf: pointer to the VF structure
976 *
977 * Cleanup a VF after the hardware reset is finished. Expects the caller to
978 * have verified whether the reset is finished properly, and ensure the
979 * minimum amount of wait time has passed.
980 **/
i40e_cleanup_reset_vf(struct i40e_vf * vf)981 static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
982 {
983 struct i40e_pf *pf = vf->pf;
984 struct i40e_hw *hw = &pf->hw;
985 u32 reg;
986
987 /* free VF resources to begin resetting the VSI state */
988 i40e_free_vf_res(vf);
989
990 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
991 * By doing this we allow HW to access VF memory at any point. If we
992 * did it any sooner, HW could access memory while it was being freed
993 * in i40e_free_vf_res(), causing an IOMMU fault.
994 *
995 * On the other hand, this needs to be done ASAP, because the VF driver
996 * is waiting for this to happen and may report a timeout. It's
997 * harmless, but it gets logged into Guest OS kernel log, so best avoid
998 * it.
999 */
1000 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1001 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1002 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1003
1004 /* reallocate VF resources to finish resetting the VSI state */
1005 if (!i40e_alloc_vf_res(vf)) {
1006 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1007 i40e_enable_vf_mappings(vf);
1008 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1009 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1010 /* Do not notify the client during VF init */
1011 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1012 &vf->vf_states))
1013 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1014 vf->num_vlan = 0;
1015 }
1016
1017 /* Tell the VF driver the reset is done. This needs to be done only
1018 * after VF has been fully initialized, because the VF driver may
1019 * request resources immediately after setting this flag.
1020 */
1021 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1022 }
1023
1024 /**
1025 * i40e_reset_vf
1026 * @vf: pointer to the VF structure
1027 * @flr: VFLR was issued or not
1028 *
1029 * reset the VF
1030 **/
i40e_reset_vf(struct i40e_vf * vf,bool flr)1031 void i40e_reset_vf(struct i40e_vf *vf, bool flr)
1032 {
1033 struct i40e_pf *pf = vf->pf;
1034 struct i40e_hw *hw = &pf->hw;
1035 bool rsd = false;
1036 u32 reg;
1037 int i;
1038
1039 /* If VFs have been disabled, there is no need to reset */
1040 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1041 return;
1042
1043 i40e_trigger_vf_reset(vf, flr);
1044
1045 /* poll VPGEN_VFRSTAT reg to make sure
1046 * that reset is complete
1047 */
1048 for (i = 0; i < 10; i++) {
1049 /* VF reset requires driver to first reset the VF and then
1050 * poll the status register to make sure that the reset
1051 * completed successfully. Due to internal HW FIFO flushes,
1052 * we must wait 10ms before the register will be valid.
1053 */
1054 usleep_range(10000, 20000);
1055 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1056 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1057 rsd = true;
1058 break;
1059 }
1060 }
1061
1062 if (flr)
1063 usleep_range(10000, 20000);
1064
1065 if (!rsd)
1066 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1067 vf->vf_id);
1068 usleep_range(10000, 20000);
1069
1070 /* On initial reset, we don't have any queues to disable */
1071 if (vf->lan_vsi_idx != 0)
1072 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1073
1074 i40e_cleanup_reset_vf(vf);
1075
1076 i40e_flush(hw);
1077 clear_bit(__I40E_VF_DISABLE, pf->state);
1078 }
1079
1080 /**
1081 * i40e_reset_all_vfs
1082 * @pf: pointer to the PF structure
1083 * @flr: VFLR was issued or not
1084 *
1085 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1086 * VF, then do all the waiting in one chunk, and finally finish restoring each
1087 * VF after the wait. This is useful during PF routines which need to reset
1088 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1089 **/
i40e_reset_all_vfs(struct i40e_pf * pf,bool flr)1090 void i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1091 {
1092 struct i40e_hw *hw = &pf->hw;
1093 struct i40e_vf *vf;
1094 int i, v;
1095 u32 reg;
1096
1097 /* If we don't have any VFs, then there is nothing to reset */
1098 if (!pf->num_alloc_vfs)
1099 return;
1100
1101 /* If VFs have been disabled, there is no need to reset */
1102 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1103 return;
1104
1105 /* Begin reset on all VFs at once */
1106 for (v = 0; v < pf->num_alloc_vfs; v++)
1107 i40e_trigger_vf_reset(&pf->vf[v], flr);
1108
1109 /* HW requires some time to make sure it can flush the FIFO for a VF
1110 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1111 * sequence to make sure that it has completed. We'll keep track of
1112 * the VFs using a simple iterator that increments once that VF has
1113 * finished resetting.
1114 */
1115 for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
1116 usleep_range(10000, 20000);
1117
1118 /* Check each VF in sequence, beginning with the VF to fail
1119 * the previous check.
1120 */
1121 while (v < pf->num_alloc_vfs) {
1122 vf = &pf->vf[v];
1123 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1124 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1125 break;
1126
1127 /* If the current VF has finished resetting, move on
1128 * to the next VF in sequence.
1129 */
1130 v++;
1131 }
1132 }
1133
1134 if (flr)
1135 usleep_range(10000, 20000);
1136
1137 /* Display a warning if at least one VF didn't manage to reset in
1138 * time, but continue on with the operation.
1139 */
1140 if (v < pf->num_alloc_vfs)
1141 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1142 pf->vf[v].vf_id);
1143 usleep_range(10000, 20000);
1144
1145 /* Begin disabling all the rings associated with VFs, but do not wait
1146 * between each VF.
1147 */
1148 for (v = 0; v < pf->num_alloc_vfs; v++) {
1149 /* On initial reset, we don't have any queues to disable */
1150 if (pf->vf[v].lan_vsi_idx == 0)
1151 continue;
1152
1153 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[v].lan_vsi_idx]);
1154 }
1155
1156 /* Now that we've notified HW to disable all of the VF rings, wait
1157 * until they finish.
1158 */
1159 for (v = 0; v < pf->num_alloc_vfs; v++) {
1160 /* On initial reset, we don't have any queues to disable */
1161 if (pf->vf[v].lan_vsi_idx == 0)
1162 continue;
1163
1164 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[v].lan_vsi_idx]);
1165 }
1166
1167 /* Hw may need up to 50ms to finish disabling the RX queues. We
1168 * minimize the wait by delaying only once for all VFs.
1169 */
1170 mdelay(50);
1171
1172 /* Finish the reset on each VF */
1173 for (v = 0; v < pf->num_alloc_vfs; v++)
1174 i40e_cleanup_reset_vf(&pf->vf[v]);
1175
1176 i40e_flush(hw);
1177 clear_bit(__I40E_VF_DISABLE, pf->state);
1178 }
1179
1180 /**
1181 * i40e_free_vfs
1182 * @pf: pointer to the PF structure
1183 *
1184 * free VF resources
1185 **/
i40e_free_vfs(struct i40e_pf * pf)1186 void i40e_free_vfs(struct i40e_pf *pf)
1187 {
1188 struct i40e_hw *hw = &pf->hw;
1189 u32 reg_idx, bit_idx;
1190 int i, tmp, vf_id;
1191
1192 if (!pf->vf)
1193 return;
1194 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1195 usleep_range(1000, 2000);
1196
1197 i40e_notify_client_of_vf_enable(pf, 0);
1198
1199 /* Amortize wait time by stopping all VFs at the same time */
1200 for (i = 0; i < pf->num_alloc_vfs; i++) {
1201 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1202 continue;
1203
1204 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1205 }
1206
1207 for (i = 0; i < pf->num_alloc_vfs; i++) {
1208 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1209 continue;
1210
1211 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1212 }
1213
1214 /* Disable IOV before freeing resources. This lets any VF drivers
1215 * running in the host get themselves cleaned up before we yank
1216 * the carpet out from underneath their feet.
1217 */
1218 if (!pci_vfs_assigned(pf->pdev))
1219 pci_disable_sriov(pf->pdev);
1220 else
1221 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1222
1223 /* free up VF resources */
1224 tmp = pf->num_alloc_vfs;
1225 pf->num_alloc_vfs = 0;
1226 for (i = 0; i < tmp; i++) {
1227 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1228 i40e_free_vf_res(&pf->vf[i]);
1229 /* disable qp mappings */
1230 i40e_disable_vf_mappings(&pf->vf[i]);
1231 }
1232
1233 kfree(pf->vf);
1234 pf->vf = NULL;
1235
1236 /* This check is for when the driver is unloaded while VFs are
1237 * assigned. Setting the number of VFs to 0 through sysfs is caught
1238 * before this function ever gets called.
1239 */
1240 if (!pci_vfs_assigned(pf->pdev)) {
1241 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1242 * work correctly when SR-IOV gets re-enabled.
1243 */
1244 for (vf_id = 0; vf_id < tmp; vf_id++) {
1245 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1246 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1247 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1248 }
1249 }
1250 clear_bit(__I40E_VF_DISABLE, pf->state);
1251 }
1252
1253 #ifdef CONFIG_PCI_IOV
1254 /**
1255 * i40e_alloc_vfs
1256 * @pf: pointer to the PF structure
1257 * @num_alloc_vfs: number of VFs to allocate
1258 *
1259 * allocate VF resources
1260 **/
i40e_alloc_vfs(struct i40e_pf * pf,u16 num_alloc_vfs)1261 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1262 {
1263 struct i40e_vf *vfs;
1264 int i, ret = 0;
1265
1266 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1267 i40e_irq_dynamic_disable_icr0(pf);
1268
1269 /* Check to see if we're just allocating resources for extant VFs */
1270 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1271 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1272 if (ret) {
1273 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1274 pf->num_alloc_vfs = 0;
1275 goto err_iov;
1276 }
1277 }
1278 /* allocate memory */
1279 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1280 if (!vfs) {
1281 ret = -ENOMEM;
1282 goto err_alloc;
1283 }
1284 pf->vf = vfs;
1285
1286 /* apply default profile */
1287 for (i = 0; i < num_alloc_vfs; i++) {
1288 vfs[i].pf = pf;
1289 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1290 vfs[i].vf_id = i;
1291
1292 /* assign default capabilities */
1293 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1294 vfs[i].spoofchk = true;
1295
1296 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1297
1298 }
1299 pf->num_alloc_vfs = num_alloc_vfs;
1300
1301 /* VF resources get allocated during reset */
1302 i40e_reset_all_vfs(pf, false);
1303
1304 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1305
1306 err_alloc:
1307 if (ret)
1308 i40e_free_vfs(pf);
1309 err_iov:
1310 /* Re-enable interrupt 0. */
1311 i40e_irq_dynamic_enable_icr0(pf, false);
1312 return ret;
1313 }
1314
1315 #endif
1316 /**
1317 * i40e_pci_sriov_enable
1318 * @pdev: pointer to a pci_dev structure
1319 * @num_vfs: number of VFs to allocate
1320 *
1321 * Enable or change the number of VFs
1322 **/
i40e_pci_sriov_enable(struct pci_dev * pdev,int num_vfs)1323 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1324 {
1325 #ifdef CONFIG_PCI_IOV
1326 struct i40e_pf *pf = pci_get_drvdata(pdev);
1327 int pre_existing_vfs = pci_num_vf(pdev);
1328 int err = 0;
1329
1330 if (test_bit(__I40E_TESTING, pf->state)) {
1331 dev_warn(&pdev->dev,
1332 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1333 err = -EPERM;
1334 goto err_out;
1335 }
1336
1337 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1338 i40e_free_vfs(pf);
1339 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1340 goto out;
1341
1342 if (num_vfs > pf->num_req_vfs) {
1343 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1344 num_vfs, pf->num_req_vfs);
1345 err = -EPERM;
1346 goto err_out;
1347 }
1348
1349 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1350 err = i40e_alloc_vfs(pf, num_vfs);
1351 if (err) {
1352 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1353 goto err_out;
1354 }
1355
1356 out:
1357 return num_vfs;
1358
1359 err_out:
1360 return err;
1361 #endif
1362 return 0;
1363 }
1364
1365 /**
1366 * i40e_pci_sriov_configure
1367 * @pdev: pointer to a pci_dev structure
1368 * @num_vfs: number of VFs to allocate
1369 *
1370 * Enable or change the number of VFs. Called when the user updates the number
1371 * of VFs in sysfs.
1372 **/
i40e_pci_sriov_configure(struct pci_dev * pdev,int num_vfs)1373 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1374 {
1375 struct i40e_pf *pf = pci_get_drvdata(pdev);
1376
1377 if (num_vfs) {
1378 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1379 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1380 i40e_do_reset_safe(pf,
1381 BIT_ULL(__I40E_PF_RESET_REQUESTED));
1382 }
1383 return i40e_pci_sriov_enable(pdev, num_vfs);
1384 }
1385
1386 if (!pci_vfs_assigned(pf->pdev)) {
1387 i40e_free_vfs(pf);
1388 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1389 i40e_do_reset_safe(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
1390 } else {
1391 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1392 return -EINVAL;
1393 }
1394 return 0;
1395 }
1396
1397 /***********************virtual channel routines******************/
1398
1399 /**
1400 * i40e_vc_send_msg_to_vf
1401 * @vf: pointer to the VF info
1402 * @v_opcode: virtual channel opcode
1403 * @v_retval: virtual channel return value
1404 * @msg: pointer to the msg buffer
1405 * @msglen: msg length
1406 *
1407 * send msg to VF
1408 **/
i40e_vc_send_msg_to_vf(struct i40e_vf * vf,u32 v_opcode,u32 v_retval,u8 * msg,u16 msglen)1409 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1410 u32 v_retval, u8 *msg, u16 msglen)
1411 {
1412 struct i40e_pf *pf;
1413 struct i40e_hw *hw;
1414 int abs_vf_id;
1415 i40e_status aq_ret;
1416
1417 /* validate the request */
1418 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1419 return -EINVAL;
1420
1421 pf = vf->pf;
1422 hw = &pf->hw;
1423 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1424
1425 /* single place to detect unsuccessful return values */
1426 if (v_retval) {
1427 vf->num_invalid_msgs++;
1428 dev_info(&pf->pdev->dev, "VF %d failed opcode %d, retval: %d\n",
1429 vf->vf_id, v_opcode, v_retval);
1430 if (vf->num_invalid_msgs >
1431 I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
1432 dev_err(&pf->pdev->dev,
1433 "Number of invalid messages exceeded for VF %d\n",
1434 vf->vf_id);
1435 dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
1436 set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1437 }
1438 } else {
1439 vf->num_valid_msgs++;
1440 /* reset the invalid counter, if a valid message is received. */
1441 vf->num_invalid_msgs = 0;
1442 }
1443
1444 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1445 msg, msglen, NULL);
1446 if (aq_ret) {
1447 dev_info(&pf->pdev->dev,
1448 "Unable to send the message to VF %d aq_err %d\n",
1449 vf->vf_id, pf->hw.aq.asq_last_status);
1450 return -EIO;
1451 }
1452
1453 return 0;
1454 }
1455
1456 /**
1457 * i40e_vc_send_resp_to_vf
1458 * @vf: pointer to the VF info
1459 * @opcode: operation code
1460 * @retval: return value
1461 *
1462 * send resp msg to VF
1463 **/
i40e_vc_send_resp_to_vf(struct i40e_vf * vf,enum virtchnl_ops opcode,i40e_status retval)1464 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1465 enum virtchnl_ops opcode,
1466 i40e_status retval)
1467 {
1468 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1469 }
1470
1471 /**
1472 * i40e_vc_get_version_msg
1473 * @vf: pointer to the VF info
1474 *
1475 * called from the VF to request the API version used by the PF
1476 **/
i40e_vc_get_version_msg(struct i40e_vf * vf,u8 * msg)1477 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
1478 {
1479 struct virtchnl_version_info info = {
1480 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
1481 };
1482
1483 vf->vf_ver = *(struct virtchnl_version_info *)msg;
1484 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
1485 if (VF_IS_V10(&vf->vf_ver))
1486 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
1487 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
1488 I40E_SUCCESS, (u8 *)&info,
1489 sizeof(struct virtchnl_version_info));
1490 }
1491
1492 /**
1493 * i40e_vc_get_vf_resources_msg
1494 * @vf: pointer to the VF info
1495 * @msg: pointer to the msg buffer
1496 * @msglen: msg length
1497 *
1498 * called from the VF to request its resources
1499 **/
i40e_vc_get_vf_resources_msg(struct i40e_vf * vf,u8 * msg)1500 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
1501 {
1502 struct virtchnl_vf_resource *vfres = NULL;
1503 struct i40e_pf *pf = vf->pf;
1504 i40e_status aq_ret = 0;
1505 struct i40e_vsi *vsi;
1506 int num_vsis = 1;
1507 int len = 0;
1508 int ret;
1509
1510 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
1511 aq_ret = I40E_ERR_PARAM;
1512 goto err;
1513 }
1514
1515 len = (sizeof(struct virtchnl_vf_resource) +
1516 sizeof(struct virtchnl_vsi_resource) * num_vsis);
1517
1518 vfres = kzalloc(len, GFP_KERNEL);
1519 if (!vfres) {
1520 aq_ret = I40E_ERR_NO_MEMORY;
1521 len = 0;
1522 goto err;
1523 }
1524 if (VF_IS_V11(&vf->vf_ver))
1525 vf->driver_caps = *(u32 *)msg;
1526 else
1527 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
1528 VIRTCHNL_VF_OFFLOAD_RSS_REG |
1529 VIRTCHNL_VF_OFFLOAD_VLAN;
1530
1531 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
1532 vsi = pf->vsi[vf->lan_vsi_idx];
1533 if (!vsi->info.pvid)
1534 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
1535
1536 if (i40e_vf_client_capable(pf, vf->vf_id) &&
1537 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_IWARP)) {
1538 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_IWARP;
1539 set_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
1540 }
1541
1542 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
1543 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
1544 } else {
1545 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
1546 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
1547 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
1548 else
1549 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
1550 }
1551
1552 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
1553 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1554 vfres->vf_cap_flags |=
1555 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
1556 }
1557
1558 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
1559 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
1560
1561 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
1562 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
1563 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
1564
1565 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
1566 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
1567 dev_err(&pf->pdev->dev,
1568 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
1569 vf->vf_id);
1570 aq_ret = I40E_ERR_PARAM;
1571 goto err;
1572 }
1573 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
1574 }
1575
1576 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
1577 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
1578 vfres->vf_cap_flags |=
1579 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
1580 }
1581
1582 vfres->num_vsis = num_vsis;
1583 vfres->num_queue_pairs = vf->num_queue_pairs;
1584 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
1585 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
1586 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
1587
1588 if (vf->lan_vsi_idx) {
1589 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
1590 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
1591 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
1592 /* VFs only use TC 0 */
1593 vfres->vsi_res[0].qset_handle
1594 = le16_to_cpu(vsi->info.qs_handle[0]);
1595 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
1596 vf->default_lan_addr.addr);
1597 }
1598 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1599
1600 err:
1601 /* send the response back to the VF */
1602 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
1603 aq_ret, (u8 *)vfres, len);
1604
1605 kfree(vfres);
1606 return ret;
1607 }
1608
1609 /**
1610 * i40e_vc_reset_vf_msg
1611 * @vf: pointer to the VF info
1612 * @msg: pointer to the msg buffer
1613 * @msglen: msg length
1614 *
1615 * called from the VF to reset itself,
1616 * unlike other virtchnl messages, PF driver
1617 * doesn't send the response back to the VF
1618 **/
i40e_vc_reset_vf_msg(struct i40e_vf * vf)1619 static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
1620 {
1621 if (test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
1622 i40e_reset_vf(vf, false);
1623 }
1624
1625 /**
1626 * i40e_getnum_vf_vsi_vlan_filters
1627 * @vsi: pointer to the vsi
1628 *
1629 * called to get the number of VLANs offloaded on this VF
1630 **/
i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1631 static inline int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1632 {
1633 struct i40e_mac_filter *f;
1634 int num_vlans = 0, bkt;
1635
1636 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1637 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1638 num_vlans++;
1639 }
1640
1641 return num_vlans;
1642 }
1643
1644 /**
1645 * i40e_vc_config_promiscuous_mode_msg
1646 * @vf: pointer to the VF info
1647 * @msg: pointer to the msg buffer
1648 * @msglen: msg length
1649 *
1650 * called from the VF to configure the promiscuous mode of
1651 * VF vsis
1652 **/
i40e_vc_config_promiscuous_mode_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)1653 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf,
1654 u8 *msg, u16 msglen)
1655 {
1656 struct virtchnl_promisc_info *info =
1657 (struct virtchnl_promisc_info *)msg;
1658 struct i40e_pf *pf = vf->pf;
1659 struct i40e_hw *hw = &pf->hw;
1660 struct i40e_mac_filter *f;
1661 i40e_status aq_ret = 0;
1662 bool allmulti = false;
1663 struct i40e_vsi *vsi;
1664 bool alluni = false;
1665 int aq_err = 0;
1666 int bkt;
1667
1668 vsi = i40e_find_vsi_from_id(pf, info->vsi_id);
1669 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
1670 !i40e_vc_isvalid_vsi_id(vf, info->vsi_id) ||
1671 !vsi) {
1672 aq_ret = I40E_ERR_PARAM;
1673 goto error_param;
1674 }
1675 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
1676 dev_err(&pf->pdev->dev,
1677 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
1678 vf->vf_id);
1679 /* Lie to the VF on purpose. */
1680 aq_ret = 0;
1681 goto error_param;
1682 }
1683 /* Multicast promiscuous handling*/
1684 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
1685 allmulti = true;
1686
1687 if (vf->port_vlan_id) {
1688 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, vsi->seid,
1689 allmulti,
1690 vf->port_vlan_id,
1691 NULL);
1692 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1693 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1694 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1695 continue;
1696 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw,
1697 vsi->seid,
1698 allmulti,
1699 f->vlan,
1700 NULL);
1701 aq_err = pf->hw.aq.asq_last_status;
1702 if (aq_ret) {
1703 dev_err(&pf->pdev->dev,
1704 "Could not add VLAN %d to multicast promiscuous domain err %s aq_err %s\n",
1705 f->vlan,
1706 i40e_stat_str(&pf->hw, aq_ret),
1707 i40e_aq_str(&pf->hw, aq_err));
1708 break;
1709 }
1710 }
1711 } else {
1712 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid,
1713 allmulti, NULL);
1714 aq_err = pf->hw.aq.asq_last_status;
1715 if (aq_ret) {
1716 dev_err(&pf->pdev->dev,
1717 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1718 vf->vf_id,
1719 i40e_stat_str(&pf->hw, aq_ret),
1720 i40e_aq_str(&pf->hw, aq_err));
1721 goto error_param;
1722 }
1723 }
1724
1725 if (!aq_ret) {
1726 dev_info(&pf->pdev->dev,
1727 "VF %d successfully set multicast promiscuous mode\n",
1728 vf->vf_id);
1729 if (allmulti)
1730 set_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1731 else
1732 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1733 }
1734
1735 if (info->flags & FLAG_VF_UNICAST_PROMISC)
1736 alluni = true;
1737 if (vf->port_vlan_id) {
1738 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, vsi->seid,
1739 alluni,
1740 vf->port_vlan_id,
1741 NULL);
1742 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1743 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1744 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1745 continue;
1746 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw,
1747 vsi->seid,
1748 alluni,
1749 f->vlan,
1750 NULL);
1751 aq_err = pf->hw.aq.asq_last_status;
1752 if (aq_ret)
1753 dev_err(&pf->pdev->dev,
1754 "Could not add VLAN %d to Unicast promiscuous domain err %s aq_err %s\n",
1755 f->vlan,
1756 i40e_stat_str(&pf->hw, aq_ret),
1757 i40e_aq_str(&pf->hw, aq_err));
1758 }
1759 } else {
1760 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, vsi->seid,
1761 alluni, NULL,
1762 true);
1763 aq_err = pf->hw.aq.asq_last_status;
1764 if (aq_ret) {
1765 dev_err(&pf->pdev->dev,
1766 "VF %d failed to set unicast promiscuous mode %8.8x err %s aq_err %s\n",
1767 vf->vf_id, info->flags,
1768 i40e_stat_str(&pf->hw, aq_ret),
1769 i40e_aq_str(&pf->hw, aq_err));
1770 goto error_param;
1771 }
1772 }
1773
1774 if (!aq_ret) {
1775 dev_info(&pf->pdev->dev,
1776 "VF %d successfully set unicast promiscuous mode\n",
1777 vf->vf_id);
1778 if (alluni)
1779 set_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1780 else
1781 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1782 }
1783
1784 error_param:
1785 /* send the response to the VF */
1786 return i40e_vc_send_resp_to_vf(vf,
1787 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
1788 aq_ret);
1789 }
1790
1791 /**
1792 * i40e_vc_config_queues_msg
1793 * @vf: pointer to the VF info
1794 * @msg: pointer to the msg buffer
1795 * @msglen: msg length
1796 *
1797 * called from the VF to configure the rx/tx
1798 * queues
1799 **/
i40e_vc_config_queues_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)1800 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1801 {
1802 struct virtchnl_vsi_queue_config_info *qci =
1803 (struct virtchnl_vsi_queue_config_info *)msg;
1804 struct virtchnl_queue_pair_info *qpi;
1805 struct i40e_pf *pf = vf->pf;
1806 u16 vsi_id, vsi_queue_id;
1807 i40e_status aq_ret = 0;
1808 int i;
1809
1810 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
1811 aq_ret = I40E_ERR_PARAM;
1812 goto error_param;
1813 }
1814
1815 vsi_id = qci->vsi_id;
1816 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1817 aq_ret = I40E_ERR_PARAM;
1818 goto error_param;
1819 }
1820 for (i = 0; i < qci->num_queue_pairs; i++) {
1821 qpi = &qci->qpair[i];
1822 vsi_queue_id = qpi->txq.queue_id;
1823 if ((qpi->txq.vsi_id != vsi_id) ||
1824 (qpi->rxq.vsi_id != vsi_id) ||
1825 (qpi->rxq.queue_id != vsi_queue_id) ||
1826 !i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) {
1827 aq_ret = I40E_ERR_PARAM;
1828 goto error_param;
1829 }
1830
1831 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
1832 &qpi->rxq) ||
1833 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
1834 &qpi->txq)) {
1835 aq_ret = I40E_ERR_PARAM;
1836 goto error_param;
1837 }
1838 }
1839 /* set vsi num_queue_pairs in use to num configured by VF */
1840 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs = qci->num_queue_pairs;
1841
1842 error_param:
1843 /* send the response to the VF */
1844 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
1845 aq_ret);
1846 }
1847
1848 /**
1849 * i40e_vc_config_irq_map_msg
1850 * @vf: pointer to the VF info
1851 * @msg: pointer to the msg buffer
1852 * @msglen: msg length
1853 *
1854 * called from the VF to configure the irq to
1855 * queue map
1856 **/
i40e_vc_config_irq_map_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)1857 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1858 {
1859 struct virtchnl_irq_map_info *irqmap_info =
1860 (struct virtchnl_irq_map_info *)msg;
1861 struct virtchnl_vector_map *map;
1862 u16 vsi_id, vsi_queue_id, vector_id;
1863 i40e_status aq_ret = 0;
1864 unsigned long tempmap;
1865 int i;
1866
1867 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
1868 aq_ret = I40E_ERR_PARAM;
1869 goto error_param;
1870 }
1871
1872 for (i = 0; i < irqmap_info->num_vectors; i++) {
1873 map = &irqmap_info->vecmap[i];
1874
1875 vector_id = map->vector_id;
1876 vsi_id = map->vsi_id;
1877 /* validate msg params */
1878 if (!i40e_vc_isvalid_vector_id(vf, vector_id) ||
1879 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1880 aq_ret = I40E_ERR_PARAM;
1881 goto error_param;
1882 }
1883
1884 /* lookout for the invalid queue index */
1885 tempmap = map->rxq_map;
1886 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1887 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
1888 vsi_queue_id)) {
1889 aq_ret = I40E_ERR_PARAM;
1890 goto error_param;
1891 }
1892 }
1893
1894 tempmap = map->txq_map;
1895 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1896 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
1897 vsi_queue_id)) {
1898 aq_ret = I40E_ERR_PARAM;
1899 goto error_param;
1900 }
1901 }
1902
1903 i40e_config_irq_link_list(vf, vsi_id, map);
1904 }
1905 error_param:
1906 /* send the response to the VF */
1907 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
1908 aq_ret);
1909 }
1910
1911 /**
1912 * i40e_vc_enable_queues_msg
1913 * @vf: pointer to the VF info
1914 * @msg: pointer to the msg buffer
1915 * @msglen: msg length
1916 *
1917 * called from the VF to enable all or specific queue(s)
1918 **/
i40e_vc_enable_queues_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)1919 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1920 {
1921 struct virtchnl_queue_select *vqs =
1922 (struct virtchnl_queue_select *)msg;
1923 struct i40e_pf *pf = vf->pf;
1924 u16 vsi_id = vqs->vsi_id;
1925 i40e_status aq_ret = 0;
1926
1927 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
1928 aq_ret = I40E_ERR_PARAM;
1929 goto error_param;
1930 }
1931
1932 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1933 aq_ret = I40E_ERR_PARAM;
1934 goto error_param;
1935 }
1936
1937 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
1938 aq_ret = I40E_ERR_PARAM;
1939 goto error_param;
1940 }
1941
1942 if (i40e_vsi_start_rings(pf->vsi[vf->lan_vsi_idx]))
1943 aq_ret = I40E_ERR_TIMEOUT;
1944 error_param:
1945 /* send the response to the VF */
1946 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
1947 aq_ret);
1948 }
1949
1950 /**
1951 * i40e_vc_disable_queues_msg
1952 * @vf: pointer to the VF info
1953 * @msg: pointer to the msg buffer
1954 * @msglen: msg length
1955 *
1956 * called from the VF to disable all or specific
1957 * queue(s)
1958 **/
i40e_vc_disable_queues_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)1959 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1960 {
1961 struct virtchnl_queue_select *vqs =
1962 (struct virtchnl_queue_select *)msg;
1963 struct i40e_pf *pf = vf->pf;
1964 i40e_status aq_ret = 0;
1965
1966 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
1967 aq_ret = I40E_ERR_PARAM;
1968 goto error_param;
1969 }
1970
1971 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1972 aq_ret = I40E_ERR_PARAM;
1973 goto error_param;
1974 }
1975
1976 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
1977 aq_ret = I40E_ERR_PARAM;
1978 goto error_param;
1979 }
1980
1981 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1982
1983 error_param:
1984 /* send the response to the VF */
1985 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
1986 aq_ret);
1987 }
1988
1989 /**
1990 * i40e_vc_get_stats_msg
1991 * @vf: pointer to the VF info
1992 * @msg: pointer to the msg buffer
1993 * @msglen: msg length
1994 *
1995 * called from the VF to get vsi stats
1996 **/
i40e_vc_get_stats_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)1997 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1998 {
1999 struct virtchnl_queue_select *vqs =
2000 (struct virtchnl_queue_select *)msg;
2001 struct i40e_pf *pf = vf->pf;
2002 struct i40e_eth_stats stats;
2003 i40e_status aq_ret = 0;
2004 struct i40e_vsi *vsi;
2005
2006 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2007
2008 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2009 aq_ret = I40E_ERR_PARAM;
2010 goto error_param;
2011 }
2012
2013 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2014 aq_ret = I40E_ERR_PARAM;
2015 goto error_param;
2016 }
2017
2018 vsi = pf->vsi[vf->lan_vsi_idx];
2019 if (!vsi) {
2020 aq_ret = I40E_ERR_PARAM;
2021 goto error_param;
2022 }
2023 i40e_update_eth_stats(vsi);
2024 stats = vsi->eth_stats;
2025
2026 error_param:
2027 /* send the response back to the VF */
2028 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2029 (u8 *)&stats, sizeof(stats));
2030 }
2031
2032 /* If the VF is not trusted restrict the number of MAC/VLAN it can program
2033 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2034 */
2035 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2036 #define I40E_VC_MAX_VLAN_PER_VF 8
2037
2038 /**
2039 * i40e_check_vf_permission
2040 * @vf: pointer to the VF info
2041 * @macaddr: pointer to the MAC Address being checked
2042 *
2043 * Check if the VF has permission to add or delete unicast MAC address
2044 * filters and return error code -EPERM if not. Then check if the
2045 * address filter requested is broadcast or zero and if so return
2046 * an invalid MAC address error code.
2047 **/
i40e_check_vf_permission(struct i40e_vf * vf,u8 * macaddr)2048 static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr)
2049 {
2050 struct i40e_pf *pf = vf->pf;
2051 int ret = 0;
2052
2053 if (is_broadcast_ether_addr(macaddr) ||
2054 is_zero_ether_addr(macaddr)) {
2055 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr);
2056 ret = I40E_ERR_INVALID_MAC_ADDR;
2057 } else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr) &&
2058 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2059 !ether_addr_equal(macaddr, vf->default_lan_addr.addr)) {
2060 /* If the host VMM administrator has set the VF MAC address
2061 * administratively via the ndo_set_vf_mac command then deny
2062 * permission to the VF to add or delete unicast MAC addresses.
2063 * Unless the VF is privileged and then it can do whatever.
2064 * The VF may request to set the MAC address filter already
2065 * assigned to it so do not return an error in that case.
2066 */
2067 dev_err(&pf->pdev->dev,
2068 "VF attempting to override administratively set MAC address, reload the VF driver to resume normal operation\n");
2069 ret = -EPERM;
2070 } else if ((vf->num_mac >= I40E_VC_MAX_MAC_ADDR_PER_VF) &&
2071 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2072 dev_err(&pf->pdev->dev,
2073 "VF is not trusted, switch the VF to trusted to add more functionality\n");
2074 ret = -EPERM;
2075 }
2076 return ret;
2077 }
2078
2079 /**
2080 * i40e_vc_add_mac_addr_msg
2081 * @vf: pointer to the VF info
2082 * @msg: pointer to the msg buffer
2083 * @msglen: msg length
2084 *
2085 * add guest mac address filter
2086 **/
i40e_vc_add_mac_addr_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)2087 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2088 {
2089 struct virtchnl_ether_addr_list *al =
2090 (struct virtchnl_ether_addr_list *)msg;
2091 struct i40e_pf *pf = vf->pf;
2092 struct i40e_vsi *vsi = NULL;
2093 u16 vsi_id = al->vsi_id;
2094 i40e_status ret = 0;
2095 int i;
2096
2097 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2098 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2099 ret = I40E_ERR_PARAM;
2100 goto error_param;
2101 }
2102
2103 for (i = 0; i < al->num_elements; i++) {
2104 ret = i40e_check_vf_permission(vf, al->list[i].addr);
2105 if (ret)
2106 goto error_param;
2107 }
2108 vsi = pf->vsi[vf->lan_vsi_idx];
2109
2110 /* Lock once, because all function inside for loop accesses VSI's
2111 * MAC filter list which needs to be protected using same lock.
2112 */
2113 spin_lock_bh(&vsi->mac_filter_hash_lock);
2114
2115 /* add new addresses to the list */
2116 for (i = 0; i < al->num_elements; i++) {
2117 struct i40e_mac_filter *f;
2118
2119 f = i40e_find_mac(vsi, al->list[i].addr);
2120 if (!f)
2121 f = i40e_add_mac_filter(vsi, al->list[i].addr);
2122
2123 if (!f) {
2124 dev_err(&pf->pdev->dev,
2125 "Unable to add MAC filter %pM for VF %d\n",
2126 al->list[i].addr, vf->vf_id);
2127 ret = I40E_ERR_PARAM;
2128 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2129 goto error_param;
2130 } else {
2131 vf->num_mac++;
2132 }
2133 }
2134 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2135
2136 /* program the updated filter list */
2137 ret = i40e_sync_vsi_filters(vsi);
2138 if (ret)
2139 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2140 vf->vf_id, ret);
2141
2142 error_param:
2143 /* send the response to the VF */
2144 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
2145 ret);
2146 }
2147
2148 /**
2149 * i40e_vc_del_mac_addr_msg
2150 * @vf: pointer to the VF info
2151 * @msg: pointer to the msg buffer
2152 * @msglen: msg length
2153 *
2154 * remove guest mac address filter
2155 **/
i40e_vc_del_mac_addr_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)2156 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2157 {
2158 struct virtchnl_ether_addr_list *al =
2159 (struct virtchnl_ether_addr_list *)msg;
2160 struct i40e_pf *pf = vf->pf;
2161 struct i40e_vsi *vsi = NULL;
2162 u16 vsi_id = al->vsi_id;
2163 i40e_status ret = 0;
2164 int i;
2165
2166 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2167 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2168 ret = I40E_ERR_PARAM;
2169 goto error_param;
2170 }
2171
2172 for (i = 0; i < al->num_elements; i++) {
2173 if (is_broadcast_ether_addr(al->list[i].addr) ||
2174 is_zero_ether_addr(al->list[i].addr)) {
2175 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
2176 al->list[i].addr, vf->vf_id);
2177 ret = I40E_ERR_INVALID_MAC_ADDR;
2178 goto error_param;
2179 }
2180
2181 if (vf->pf_set_mac &&
2182 ether_addr_equal(al->list[i].addr,
2183 vf->default_lan_addr.addr)) {
2184 dev_err(&pf->pdev->dev,
2185 "MAC addr %pM has been set by PF, cannot delete it for VF %d, reset VF to change MAC addr\n",
2186 vf->default_lan_addr.addr, vf->vf_id);
2187 ret = I40E_ERR_PARAM;
2188 goto error_param;
2189 }
2190 }
2191 vsi = pf->vsi[vf->lan_vsi_idx];
2192
2193 spin_lock_bh(&vsi->mac_filter_hash_lock);
2194 /* delete addresses from the list */
2195 for (i = 0; i < al->num_elements; i++)
2196 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
2197 ret = I40E_ERR_INVALID_MAC_ADDR;
2198 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2199 goto error_param;
2200 } else {
2201 vf->num_mac--;
2202 }
2203
2204 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2205
2206 /* program the updated filter list */
2207 ret = i40e_sync_vsi_filters(vsi);
2208 if (ret)
2209 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2210 vf->vf_id, ret);
2211
2212 error_param:
2213 /* send the response to the VF */
2214 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR,
2215 ret);
2216 }
2217
2218 /**
2219 * i40e_vc_add_vlan_msg
2220 * @vf: pointer to the VF info
2221 * @msg: pointer to the msg buffer
2222 * @msglen: msg length
2223 *
2224 * program guest vlan id
2225 **/
i40e_vc_add_vlan_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)2226 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2227 {
2228 struct virtchnl_vlan_filter_list *vfl =
2229 (struct virtchnl_vlan_filter_list *)msg;
2230 struct i40e_pf *pf = vf->pf;
2231 struct i40e_vsi *vsi = NULL;
2232 u16 vsi_id = vfl->vsi_id;
2233 i40e_status aq_ret = 0;
2234 int i;
2235
2236 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
2237 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2238 dev_err(&pf->pdev->dev,
2239 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
2240 goto error_param;
2241 }
2242 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2243 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2244 aq_ret = I40E_ERR_PARAM;
2245 goto error_param;
2246 }
2247
2248 for (i = 0; i < vfl->num_elements; i++) {
2249 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
2250 aq_ret = I40E_ERR_PARAM;
2251 dev_err(&pf->pdev->dev,
2252 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
2253 goto error_param;
2254 }
2255 }
2256 vsi = pf->vsi[vf->lan_vsi_idx];
2257 if (vsi->info.pvid) {
2258 aq_ret = I40E_ERR_PARAM;
2259 goto error_param;
2260 }
2261
2262 i40e_vlan_stripping_enable(vsi);
2263 for (i = 0; i < vfl->num_elements; i++) {
2264 /* add new VLAN filter */
2265 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
2266 if (!ret)
2267 vf->num_vlan++;
2268
2269 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
2270 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
2271 true,
2272 vfl->vlan_id[i],
2273 NULL);
2274 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
2275 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
2276 true,
2277 vfl->vlan_id[i],
2278 NULL);
2279
2280 if (ret)
2281 dev_err(&pf->pdev->dev,
2282 "Unable to add VLAN filter %d for VF %d, error %d\n",
2283 vfl->vlan_id[i], vf->vf_id, ret);
2284 }
2285
2286 error_param:
2287 /* send the response to the VF */
2288 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
2289 }
2290
2291 /**
2292 * i40e_vc_remove_vlan_msg
2293 * @vf: pointer to the VF info
2294 * @msg: pointer to the msg buffer
2295 * @msglen: msg length
2296 *
2297 * remove programmed guest vlan id
2298 **/
i40e_vc_remove_vlan_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)2299 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2300 {
2301 struct virtchnl_vlan_filter_list *vfl =
2302 (struct virtchnl_vlan_filter_list *)msg;
2303 struct i40e_pf *pf = vf->pf;
2304 struct i40e_vsi *vsi = NULL;
2305 u16 vsi_id = vfl->vsi_id;
2306 i40e_status aq_ret = 0;
2307 int i;
2308
2309 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2310 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2311 aq_ret = I40E_ERR_PARAM;
2312 goto error_param;
2313 }
2314
2315 for (i = 0; i < vfl->num_elements; i++) {
2316 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
2317 aq_ret = I40E_ERR_PARAM;
2318 goto error_param;
2319 }
2320 }
2321
2322 vsi = pf->vsi[vf->lan_vsi_idx];
2323 if (vsi->info.pvid) {
2324 aq_ret = I40E_ERR_PARAM;
2325 goto error_param;
2326 }
2327
2328 for (i = 0; i < vfl->num_elements; i++) {
2329 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
2330 vf->num_vlan--;
2331
2332 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
2333 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
2334 false,
2335 vfl->vlan_id[i],
2336 NULL);
2337 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
2338 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
2339 false,
2340 vfl->vlan_id[i],
2341 NULL);
2342 }
2343
2344 error_param:
2345 /* send the response to the VF */
2346 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
2347 }
2348
2349 /**
2350 * i40e_vc_iwarp_msg
2351 * @vf: pointer to the VF info
2352 * @msg: pointer to the msg buffer
2353 * @msglen: msg length
2354 *
2355 * called from the VF for the iwarp msgs
2356 **/
i40e_vc_iwarp_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)2357 static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2358 {
2359 struct i40e_pf *pf = vf->pf;
2360 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
2361 i40e_status aq_ret = 0;
2362
2363 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2364 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
2365 aq_ret = I40E_ERR_PARAM;
2366 goto error_param;
2367 }
2368
2369 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
2370 msg, msglen);
2371
2372 error_param:
2373 /* send the response to the VF */
2374 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP,
2375 aq_ret);
2376 }
2377
2378 /**
2379 * i40e_vc_iwarp_qvmap_msg
2380 * @vf: pointer to the VF info
2381 * @msg: pointer to the msg buffer
2382 * @msglen: msg length
2383 * @config: config qvmap or release it
2384 *
2385 * called from the VF for the iwarp msgs
2386 **/
i40e_vc_iwarp_qvmap_msg(struct i40e_vf * vf,u8 * msg,u16 msglen,bool config)2387 static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, u16 msglen,
2388 bool config)
2389 {
2390 struct virtchnl_iwarp_qvlist_info *qvlist_info =
2391 (struct virtchnl_iwarp_qvlist_info *)msg;
2392 i40e_status aq_ret = 0;
2393
2394 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2395 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
2396 aq_ret = I40E_ERR_PARAM;
2397 goto error_param;
2398 }
2399
2400 if (config) {
2401 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
2402 aq_ret = I40E_ERR_PARAM;
2403 } else {
2404 i40e_release_iwarp_qvlist(vf);
2405 }
2406
2407 error_param:
2408 /* send the response to the VF */
2409 return i40e_vc_send_resp_to_vf(vf,
2410 config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP :
2411 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP,
2412 aq_ret);
2413 }
2414
2415 /**
2416 * i40e_vc_config_rss_key
2417 * @vf: pointer to the VF info
2418 * @msg: pointer to the msg buffer
2419 * @msglen: msg length
2420 *
2421 * Configure the VF's RSS key
2422 **/
i40e_vc_config_rss_key(struct i40e_vf * vf,u8 * msg,u16 msglen)2423 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg, u16 msglen)
2424 {
2425 struct virtchnl_rss_key *vrk =
2426 (struct virtchnl_rss_key *)msg;
2427 struct i40e_pf *pf = vf->pf;
2428 struct i40e_vsi *vsi = NULL;
2429 u16 vsi_id = vrk->vsi_id;
2430 i40e_status aq_ret = 0;
2431
2432 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2433 !i40e_vc_isvalid_vsi_id(vf, vsi_id) ||
2434 (vrk->key_len != I40E_HKEY_ARRAY_SIZE)) {
2435 aq_ret = I40E_ERR_PARAM;
2436 goto err;
2437 }
2438
2439 vsi = pf->vsi[vf->lan_vsi_idx];
2440 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
2441 err:
2442 /* send the response to the VF */
2443 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
2444 aq_ret);
2445 }
2446
2447 /**
2448 * i40e_vc_config_rss_lut
2449 * @vf: pointer to the VF info
2450 * @msg: pointer to the msg buffer
2451 * @msglen: msg length
2452 *
2453 * Configure the VF's RSS LUT
2454 **/
i40e_vc_config_rss_lut(struct i40e_vf * vf,u8 * msg,u16 msglen)2455 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg, u16 msglen)
2456 {
2457 struct virtchnl_rss_lut *vrl =
2458 (struct virtchnl_rss_lut *)msg;
2459 struct i40e_pf *pf = vf->pf;
2460 struct i40e_vsi *vsi = NULL;
2461 u16 vsi_id = vrl->vsi_id;
2462 i40e_status aq_ret = 0;
2463
2464 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
2465 !i40e_vc_isvalid_vsi_id(vf, vsi_id) ||
2466 (vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE)) {
2467 aq_ret = I40E_ERR_PARAM;
2468 goto err;
2469 }
2470
2471 vsi = pf->vsi[vf->lan_vsi_idx];
2472 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
2473 /* send the response to the VF */
2474 err:
2475 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
2476 aq_ret);
2477 }
2478
2479 /**
2480 * i40e_vc_get_rss_hena
2481 * @vf: pointer to the VF info
2482 * @msg: pointer to the msg buffer
2483 * @msglen: msg length
2484 *
2485 * Return the RSS HENA bits allowed by the hardware
2486 **/
i40e_vc_get_rss_hena(struct i40e_vf * vf,u8 * msg,u16 msglen)2487 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg, u16 msglen)
2488 {
2489 struct virtchnl_rss_hena *vrh = NULL;
2490 struct i40e_pf *pf = vf->pf;
2491 i40e_status aq_ret = 0;
2492 int len = 0;
2493
2494 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2495 aq_ret = I40E_ERR_PARAM;
2496 goto err;
2497 }
2498 len = sizeof(struct virtchnl_rss_hena);
2499
2500 vrh = kzalloc(len, GFP_KERNEL);
2501 if (!vrh) {
2502 aq_ret = I40E_ERR_NO_MEMORY;
2503 len = 0;
2504 goto err;
2505 }
2506 vrh->hena = i40e_pf_get_default_rss_hena(pf);
2507 err:
2508 /* send the response back to the VF */
2509 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
2510 aq_ret, (u8 *)vrh, len);
2511 kfree(vrh);
2512 return aq_ret;
2513 }
2514
2515 /**
2516 * i40e_vc_set_rss_hena
2517 * @vf: pointer to the VF info
2518 * @msg: pointer to the msg buffer
2519 * @msglen: msg length
2520 *
2521 * Set the RSS HENA bits for the VF
2522 **/
i40e_vc_set_rss_hena(struct i40e_vf * vf,u8 * msg,u16 msglen)2523 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg, u16 msglen)
2524 {
2525 struct virtchnl_rss_hena *vrh =
2526 (struct virtchnl_rss_hena *)msg;
2527 struct i40e_pf *pf = vf->pf;
2528 struct i40e_hw *hw = &pf->hw;
2529 i40e_status aq_ret = 0;
2530
2531 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2532 aq_ret = I40E_ERR_PARAM;
2533 goto err;
2534 }
2535 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
2536 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
2537 (u32)(vrh->hena >> 32));
2538
2539 /* send the response to the VF */
2540 err:
2541 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
2542 }
2543
2544 /**
2545 * i40e_vc_enable_vlan_stripping
2546 * @vf: pointer to the VF info
2547 * @msg: pointer to the msg buffer
2548 * @msglen: msg length
2549 *
2550 * Enable vlan header stripping for the VF
2551 **/
i40e_vc_enable_vlan_stripping(struct i40e_vf * vf,u8 * msg,u16 msglen)2552 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg,
2553 u16 msglen)
2554 {
2555 struct i40e_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
2556 i40e_status aq_ret = 0;
2557
2558 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2559 aq_ret = I40E_ERR_PARAM;
2560 goto err;
2561 }
2562
2563 i40e_vlan_stripping_enable(vsi);
2564
2565 /* send the response to the VF */
2566 err:
2567 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
2568 aq_ret);
2569 }
2570
2571 /**
2572 * i40e_vc_disable_vlan_stripping
2573 * @vf: pointer to the VF info
2574 * @msg: pointer to the msg buffer
2575 * @msglen: msg length
2576 *
2577 * Disable vlan header stripping for the VF
2578 **/
i40e_vc_disable_vlan_stripping(struct i40e_vf * vf,u8 * msg,u16 msglen)2579 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg,
2580 u16 msglen)
2581 {
2582 struct i40e_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
2583 i40e_status aq_ret = 0;
2584
2585 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2586 aq_ret = I40E_ERR_PARAM;
2587 goto err;
2588 }
2589
2590 i40e_vlan_stripping_disable(vsi);
2591
2592 /* send the response to the VF */
2593 err:
2594 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
2595 aq_ret);
2596 }
2597
2598 /**
2599 * i40e_vc_process_vf_msg
2600 * @pf: pointer to the PF structure
2601 * @vf_id: source VF id
2602 * @msg: pointer to the msg buffer
2603 * @msglen: msg length
2604 * @msghndl: msg handle
2605 *
2606 * called from the common aeq/arq handler to
2607 * process request from VF
2608 **/
i40e_vc_process_vf_msg(struct i40e_pf * pf,s16 vf_id,u32 v_opcode,u32 v_retval,u8 * msg,u16 msglen)2609 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
2610 u32 v_retval, u8 *msg, u16 msglen)
2611 {
2612 struct i40e_hw *hw = &pf->hw;
2613 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
2614 struct i40e_vf *vf;
2615 int ret;
2616
2617 pf->vf_aq_requests++;
2618 if (local_vf_id >= pf->num_alloc_vfs)
2619 return -EINVAL;
2620 vf = &(pf->vf[local_vf_id]);
2621
2622 /* Check if VF is disabled. */
2623 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
2624 return I40E_ERR_PARAM;
2625
2626 /* perform basic checks on the msg */
2627 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
2628
2629 /* perform additional checks specific to this driver */
2630 if (v_opcode == VIRTCHNL_OP_CONFIG_RSS_KEY) {
2631 struct virtchnl_rss_key *vrk = (struct virtchnl_rss_key *)msg;
2632
2633 if (vrk->key_len != I40E_HKEY_ARRAY_SIZE)
2634 ret = -EINVAL;
2635 } else if (v_opcode == VIRTCHNL_OP_CONFIG_RSS_LUT) {
2636 struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg;
2637
2638 if (vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE)
2639 ret = -EINVAL;
2640 }
2641
2642 if (ret) {
2643 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
2644 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
2645 local_vf_id, v_opcode, msglen);
2646 switch (ret) {
2647 case VIRTCHNL_ERR_PARAM:
2648 return -EPERM;
2649 default:
2650 return -EINVAL;
2651 }
2652 }
2653
2654 switch (v_opcode) {
2655 case VIRTCHNL_OP_VERSION:
2656 ret = i40e_vc_get_version_msg(vf, msg);
2657 break;
2658 case VIRTCHNL_OP_GET_VF_RESOURCES:
2659 ret = i40e_vc_get_vf_resources_msg(vf, msg);
2660 break;
2661 case VIRTCHNL_OP_RESET_VF:
2662 i40e_vc_reset_vf_msg(vf);
2663 ret = 0;
2664 break;
2665 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
2666 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen);
2667 break;
2668 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
2669 ret = i40e_vc_config_queues_msg(vf, msg, msglen);
2670 break;
2671 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
2672 ret = i40e_vc_config_irq_map_msg(vf, msg, msglen);
2673 break;
2674 case VIRTCHNL_OP_ENABLE_QUEUES:
2675 ret = i40e_vc_enable_queues_msg(vf, msg, msglen);
2676 i40e_vc_notify_vf_link_state(vf);
2677 break;
2678 case VIRTCHNL_OP_DISABLE_QUEUES:
2679 ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
2680 break;
2681 case VIRTCHNL_OP_ADD_ETH_ADDR:
2682 ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen);
2683 break;
2684 case VIRTCHNL_OP_DEL_ETH_ADDR:
2685 ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen);
2686 break;
2687 case VIRTCHNL_OP_ADD_VLAN:
2688 ret = i40e_vc_add_vlan_msg(vf, msg, msglen);
2689 break;
2690 case VIRTCHNL_OP_DEL_VLAN:
2691 ret = i40e_vc_remove_vlan_msg(vf, msg, msglen);
2692 break;
2693 case VIRTCHNL_OP_GET_STATS:
2694 ret = i40e_vc_get_stats_msg(vf, msg, msglen);
2695 break;
2696 case VIRTCHNL_OP_IWARP:
2697 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
2698 break;
2699 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
2700 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, true);
2701 break;
2702 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
2703 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, false);
2704 break;
2705 case VIRTCHNL_OP_CONFIG_RSS_KEY:
2706 ret = i40e_vc_config_rss_key(vf, msg, msglen);
2707 break;
2708 case VIRTCHNL_OP_CONFIG_RSS_LUT:
2709 ret = i40e_vc_config_rss_lut(vf, msg, msglen);
2710 break;
2711 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
2712 ret = i40e_vc_get_rss_hena(vf, msg, msglen);
2713 break;
2714 case VIRTCHNL_OP_SET_RSS_HENA:
2715 ret = i40e_vc_set_rss_hena(vf, msg, msglen);
2716 break;
2717 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
2718 ret = i40e_vc_enable_vlan_stripping(vf, msg, msglen);
2719 break;
2720 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
2721 ret = i40e_vc_disable_vlan_stripping(vf, msg, msglen);
2722 break;
2723
2724 case VIRTCHNL_OP_UNKNOWN:
2725 default:
2726 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
2727 v_opcode, local_vf_id);
2728 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
2729 I40E_ERR_NOT_IMPLEMENTED);
2730 break;
2731 }
2732
2733 return ret;
2734 }
2735
2736 /**
2737 * i40e_vc_process_vflr_event
2738 * @pf: pointer to the PF structure
2739 *
2740 * called from the vlfr irq handler to
2741 * free up VF resources and state variables
2742 **/
i40e_vc_process_vflr_event(struct i40e_pf * pf)2743 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
2744 {
2745 struct i40e_hw *hw = &pf->hw;
2746 u32 reg, reg_idx, bit_idx;
2747 struct i40e_vf *vf;
2748 int vf_id;
2749
2750 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
2751 return 0;
2752
2753 /* Re-enable the VFLR interrupt cause here, before looking for which
2754 * VF got reset. Otherwise, if another VF gets a reset while the
2755 * first one is being processed, that interrupt will be lost, and
2756 * that VF will be stuck in reset forever.
2757 */
2758 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
2759 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
2760 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
2761 i40e_flush(hw);
2762
2763 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
2764 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
2765 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
2766 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
2767 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
2768 vf = &pf->vf[vf_id];
2769 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
2770 if (reg & BIT(bit_idx))
2771 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
2772 i40e_reset_vf(vf, true);
2773 }
2774
2775 return 0;
2776 }
2777
2778 /**
2779 * i40e_ndo_set_vf_mac
2780 * @netdev: network interface device structure
2781 * @vf_id: VF identifier
2782 * @mac: mac address
2783 *
2784 * program VF mac address
2785 **/
i40e_ndo_set_vf_mac(struct net_device * netdev,int vf_id,u8 * mac)2786 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
2787 {
2788 struct i40e_netdev_priv *np = netdev_priv(netdev);
2789 struct i40e_vsi *vsi = np->vsi;
2790 struct i40e_pf *pf = vsi->back;
2791 struct i40e_mac_filter *f;
2792 struct i40e_vf *vf;
2793 int ret = 0;
2794 struct hlist_node *h;
2795 int bkt;
2796 u8 i;
2797
2798 /* validate the request */
2799 if (vf_id >= pf->num_alloc_vfs) {
2800 dev_err(&pf->pdev->dev,
2801 "Invalid VF Identifier %d\n", vf_id);
2802 ret = -EINVAL;
2803 goto error_param;
2804 }
2805
2806 vf = &(pf->vf[vf_id]);
2807 vsi = pf->vsi[vf->lan_vsi_idx];
2808
2809 /* When the VF is resetting wait until it is done.
2810 * It can take up to 200 milliseconds,
2811 * but wait for up to 300 milliseconds to be safe.
2812 */
2813 for (i = 0; i < 15; i++) {
2814 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
2815 break;
2816 msleep(20);
2817 }
2818 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
2819 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2820 vf_id);
2821 ret = -EAGAIN;
2822 goto error_param;
2823 }
2824
2825 if (is_multicast_ether_addr(mac)) {
2826 dev_err(&pf->pdev->dev,
2827 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
2828 ret = -EINVAL;
2829 goto error_param;
2830 }
2831
2832 /* Lock once because below invoked function add/del_filter requires
2833 * mac_filter_hash_lock to be held
2834 */
2835 spin_lock_bh(&vsi->mac_filter_hash_lock);
2836
2837 /* delete the temporary mac address */
2838 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
2839 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
2840
2841 /* Delete all the filters for this VSI - we're going to kill it
2842 * anyway.
2843 */
2844 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
2845 __i40e_del_filter(vsi, f);
2846
2847 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2848
2849 /* program mac filter */
2850 if (i40e_sync_vsi_filters(vsi)) {
2851 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
2852 ret = -EIO;
2853 goto error_param;
2854 }
2855 ether_addr_copy(vf->default_lan_addr.addr, mac);
2856
2857 if (is_zero_ether_addr(mac)) {
2858 vf->pf_set_mac = false;
2859 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
2860 } else {
2861 vf->pf_set_mac = true;
2862 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
2863 mac, vf_id);
2864 }
2865
2866 /* Force the VF driver stop so it has to reload with new MAC address */
2867 i40e_vc_disable_vf(pf, vf);
2868 dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");
2869
2870 error_param:
2871 return ret;
2872 }
2873
2874 /**
2875 * i40e_ndo_set_vf_port_vlan
2876 * @netdev: network interface device structure
2877 * @vf_id: VF identifier
2878 * @vlan_id: mac address
2879 * @qos: priority setting
2880 * @vlan_proto: vlan protocol
2881 *
2882 * program VF vlan id and/or qos
2883 **/
i40e_ndo_set_vf_port_vlan(struct net_device * netdev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)2884 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
2885 u16 vlan_id, u8 qos, __be16 vlan_proto)
2886 {
2887 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
2888 struct i40e_netdev_priv *np = netdev_priv(netdev);
2889 struct i40e_pf *pf = np->vsi->back;
2890 struct i40e_vsi *vsi;
2891 struct i40e_vf *vf;
2892 int ret = 0;
2893
2894 /* validate the request */
2895 if (vf_id >= pf->num_alloc_vfs) {
2896 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2897 ret = -EINVAL;
2898 goto error_pvid;
2899 }
2900
2901 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
2902 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
2903 ret = -EINVAL;
2904 goto error_pvid;
2905 }
2906
2907 if (vlan_proto != htons(ETH_P_8021Q)) {
2908 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
2909 ret = -EPROTONOSUPPORT;
2910 goto error_pvid;
2911 }
2912
2913 vf = &(pf->vf[vf_id]);
2914 vsi = pf->vsi[vf->lan_vsi_idx];
2915 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
2916 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2917 vf_id);
2918 ret = -EAGAIN;
2919 goto error_pvid;
2920 }
2921
2922 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
2923 /* duplicate request, so just return success */
2924 goto error_pvid;
2925
2926 /* Locked once because multiple functions below iterate list */
2927 spin_lock_bh(&vsi->mac_filter_hash_lock);
2928
2929 if (le16_to_cpu(vsi->info.pvid) == 0 && i40e_is_vsi_in_vlan(vsi)) {
2930 dev_err(&pf->pdev->dev,
2931 "VF %d has already configured VLAN filters and the administrator is requesting a port VLAN override.\nPlease unload and reload the VF driver for this change to take effect.\n",
2932 vf_id);
2933 /* Administrator Error - knock the VF offline until he does
2934 * the right thing by reconfiguring his network correctly
2935 * and then reloading the VF driver.
2936 */
2937 i40e_vc_disable_vf(pf, vf);
2938 /* During reset the VF got a new VSI, so refresh the pointer. */
2939 vsi = pf->vsi[vf->lan_vsi_idx];
2940 }
2941
2942 /* Check for condition where there was already a port VLAN ID
2943 * filter set and now it is being deleted by setting it to zero.
2944 * Additionally check for the condition where there was a port
2945 * VLAN but now there is a new and different port VLAN being set.
2946 * Before deleting all the old VLAN filters we must add new ones
2947 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
2948 * MAC addresses deleted.
2949 */
2950 if ((!(vlan_id || qos) ||
2951 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
2952 vsi->info.pvid) {
2953 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
2954 if (ret) {
2955 dev_info(&vsi->back->pdev->dev,
2956 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
2957 vsi->back->hw.aq.asq_last_status);
2958 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2959 goto error_pvid;
2960 }
2961 }
2962
2963 if (vsi->info.pvid) {
2964 /* remove all filters on the old VLAN */
2965 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
2966 VLAN_VID_MASK));
2967 }
2968
2969 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2970 if (vlan_id || qos)
2971 ret = i40e_vsi_add_pvid(vsi, vlanprio);
2972 else
2973 i40e_vsi_remove_pvid(vsi);
2974 spin_lock_bh(&vsi->mac_filter_hash_lock);
2975
2976 if (vlan_id) {
2977 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
2978 vlan_id, qos, vf_id);
2979
2980 /* add new VLAN filter for each MAC */
2981 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
2982 if (ret) {
2983 dev_info(&vsi->back->pdev->dev,
2984 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
2985 vsi->back->hw.aq.asq_last_status);
2986 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2987 goto error_pvid;
2988 }
2989
2990 /* remove the previously added non-VLAN MAC filters */
2991 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
2992 }
2993
2994 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2995
2996 /* Schedule the worker thread to take care of applying changes */
2997 i40e_service_event_schedule(vsi->back);
2998
2999 if (ret) {
3000 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
3001 goto error_pvid;
3002 }
3003
3004 /* The Port VLAN needs to be saved across resets the same as the
3005 * default LAN MAC address.
3006 */
3007 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
3008 ret = 0;
3009
3010 error_pvid:
3011 return ret;
3012 }
3013
3014 #define I40E_BW_CREDIT_DIVISOR 50 /* 50Mbps per BW credit */
3015 #define I40E_MAX_BW_INACTIVE_ACCUM 4 /* device can accumulate 4 credits max */
3016 /**
3017 * i40e_ndo_set_vf_bw
3018 * @netdev: network interface device structure
3019 * @vf_id: VF identifier
3020 * @tx_rate: Tx rate
3021 *
3022 * configure VF Tx rate
3023 **/
i40e_ndo_set_vf_bw(struct net_device * netdev,int vf_id,int min_tx_rate,int max_tx_rate)3024 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
3025 int max_tx_rate)
3026 {
3027 struct i40e_netdev_priv *np = netdev_priv(netdev);
3028 struct i40e_pf *pf = np->vsi->back;
3029 struct i40e_vsi *vsi;
3030 struct i40e_vf *vf;
3031 int speed = 0;
3032 int ret = 0;
3033
3034 /* validate the request */
3035 if (vf_id >= pf->num_alloc_vfs) {
3036 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d.\n", vf_id);
3037 ret = -EINVAL;
3038 goto error;
3039 }
3040
3041 if (min_tx_rate) {
3042 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
3043 min_tx_rate, vf_id);
3044 return -EINVAL;
3045 }
3046
3047 vf = &(pf->vf[vf_id]);
3048 vsi = pf->vsi[vf->lan_vsi_idx];
3049 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
3050 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
3051 vf_id);
3052 ret = -EAGAIN;
3053 goto error;
3054 }
3055
3056 switch (pf->hw.phy.link_info.link_speed) {
3057 case I40E_LINK_SPEED_40GB:
3058 speed = 40000;
3059 break;
3060 case I40E_LINK_SPEED_25GB:
3061 speed = 25000;
3062 break;
3063 case I40E_LINK_SPEED_20GB:
3064 speed = 20000;
3065 break;
3066 case I40E_LINK_SPEED_10GB:
3067 speed = 10000;
3068 break;
3069 case I40E_LINK_SPEED_1GB:
3070 speed = 1000;
3071 break;
3072 default:
3073 break;
3074 }
3075
3076 if (max_tx_rate > speed) {
3077 dev_err(&pf->pdev->dev, "Invalid max tx rate %d specified for VF %d.\n",
3078 max_tx_rate, vf->vf_id);
3079 ret = -EINVAL;
3080 goto error;
3081 }
3082
3083 if ((max_tx_rate < 50) && (max_tx_rate > 0)) {
3084 dev_warn(&pf->pdev->dev, "Setting max Tx rate to minimum usable value of 50Mbps.\n");
3085 max_tx_rate = 50;
3086 }
3087
3088 /* Tx rate credits are in values of 50Mbps, 0 is disabled*/
3089 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
3090 max_tx_rate / I40E_BW_CREDIT_DIVISOR,
3091 I40E_MAX_BW_INACTIVE_ACCUM, NULL);
3092 if (ret) {
3093 dev_err(&pf->pdev->dev, "Unable to set max tx rate, error code %d.\n",
3094 ret);
3095 ret = -EIO;
3096 goto error;
3097 }
3098 vf->tx_rate = max_tx_rate;
3099 error:
3100 return ret;
3101 }
3102
3103 /**
3104 * i40e_ndo_get_vf_config
3105 * @netdev: network interface device structure
3106 * @vf_id: VF identifier
3107 * @ivi: VF configuration structure
3108 *
3109 * return VF configuration
3110 **/
i40e_ndo_get_vf_config(struct net_device * netdev,int vf_id,struct ifla_vf_info * ivi)3111 int i40e_ndo_get_vf_config(struct net_device *netdev,
3112 int vf_id, struct ifla_vf_info *ivi)
3113 {
3114 struct i40e_netdev_priv *np = netdev_priv(netdev);
3115 struct i40e_vsi *vsi = np->vsi;
3116 struct i40e_pf *pf = vsi->back;
3117 struct i40e_vf *vf;
3118 int ret = 0;
3119
3120 /* validate the request */
3121 if (vf_id >= pf->num_alloc_vfs) {
3122 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
3123 ret = -EINVAL;
3124 goto error_param;
3125 }
3126
3127 vf = &(pf->vf[vf_id]);
3128 /* first vsi is always the LAN vsi */
3129 vsi = pf->vsi[vf->lan_vsi_idx];
3130 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
3131 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
3132 vf_id);
3133 ret = -EAGAIN;
3134 goto error_param;
3135 }
3136
3137 ivi->vf = vf_id;
3138
3139 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
3140
3141 ivi->max_tx_rate = vf->tx_rate;
3142 ivi->min_tx_rate = 0;
3143 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
3144 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
3145 I40E_VLAN_PRIORITY_SHIFT;
3146 if (vf->link_forced == false)
3147 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
3148 else if (vf->link_up == true)
3149 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
3150 else
3151 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
3152 ivi->spoofchk = vf->spoofchk;
3153 ivi->trusted = vf->trusted;
3154 ret = 0;
3155
3156 error_param:
3157 return ret;
3158 }
3159
3160 /**
3161 * i40e_ndo_set_vf_link_state
3162 * @netdev: network interface device structure
3163 * @vf_id: VF identifier
3164 * @link: required link state
3165 *
3166 * Set the link state of a specified VF, regardless of physical link state
3167 **/
i40e_ndo_set_vf_link_state(struct net_device * netdev,int vf_id,int link)3168 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
3169 {
3170 struct i40e_netdev_priv *np = netdev_priv(netdev);
3171 struct i40e_pf *pf = np->vsi->back;
3172 struct virtchnl_pf_event pfe;
3173 struct i40e_hw *hw = &pf->hw;
3174 struct i40e_vf *vf;
3175 int abs_vf_id;
3176 int ret = 0;
3177
3178 /* validate the request */
3179 if (vf_id >= pf->num_alloc_vfs) {
3180 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
3181 ret = -EINVAL;
3182 goto error_out;
3183 }
3184
3185 vf = &pf->vf[vf_id];
3186 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
3187
3188 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
3189 pfe.severity = PF_EVENT_SEVERITY_INFO;
3190
3191 switch (link) {
3192 case IFLA_VF_LINK_STATE_AUTO:
3193 vf->link_forced = false;
3194 pfe.event_data.link_event.link_status =
3195 pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
3196 pfe.event_data.link_event.link_speed =
3197 (enum virtchnl_link_speed)
3198 pf->hw.phy.link_info.link_speed;
3199 break;
3200 case IFLA_VF_LINK_STATE_ENABLE:
3201 vf->link_forced = true;
3202 vf->link_up = true;
3203 pfe.event_data.link_event.link_status = true;
3204 pfe.event_data.link_event.link_speed = VIRTCHNL_LINK_SPEED_40GB;
3205 break;
3206 case IFLA_VF_LINK_STATE_DISABLE:
3207 vf->link_forced = true;
3208 vf->link_up = false;
3209 pfe.event_data.link_event.link_status = false;
3210 pfe.event_data.link_event.link_speed = 0;
3211 break;
3212 default:
3213 ret = -EINVAL;
3214 goto error_out;
3215 }
3216 /* Notify the VF of its new link state */
3217 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
3218 0, (u8 *)&pfe, sizeof(pfe), NULL);
3219
3220 error_out:
3221 return ret;
3222 }
3223
3224 /**
3225 * i40e_ndo_set_vf_spoofchk
3226 * @netdev: network interface device structure
3227 * @vf_id: VF identifier
3228 * @enable: flag to enable or disable feature
3229 *
3230 * Enable or disable VF spoof checking
3231 **/
i40e_ndo_set_vf_spoofchk(struct net_device * netdev,int vf_id,bool enable)3232 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
3233 {
3234 struct i40e_netdev_priv *np = netdev_priv(netdev);
3235 struct i40e_vsi *vsi = np->vsi;
3236 struct i40e_pf *pf = vsi->back;
3237 struct i40e_vsi_context ctxt;
3238 struct i40e_hw *hw = &pf->hw;
3239 struct i40e_vf *vf;
3240 int ret = 0;
3241
3242 /* validate the request */
3243 if (vf_id >= pf->num_alloc_vfs) {
3244 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
3245 ret = -EINVAL;
3246 goto out;
3247 }
3248
3249 vf = &(pf->vf[vf_id]);
3250 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
3251 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
3252 vf_id);
3253 ret = -EAGAIN;
3254 goto out;
3255 }
3256
3257 if (enable == vf->spoofchk)
3258 goto out;
3259
3260 vf->spoofchk = enable;
3261 memset(&ctxt, 0, sizeof(ctxt));
3262 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
3263 ctxt.pf_num = pf->hw.pf_id;
3264 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
3265 if (enable)
3266 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
3267 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
3268 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
3269 if (ret) {
3270 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
3271 ret);
3272 ret = -EIO;
3273 }
3274 out:
3275 return ret;
3276 }
3277
3278 /**
3279 * i40e_ndo_set_vf_trust
3280 * @netdev: network interface device structure of the pf
3281 * @vf_id: VF identifier
3282 * @setting: trust setting
3283 *
3284 * Enable or disable VF trust setting
3285 **/
i40e_ndo_set_vf_trust(struct net_device * netdev,int vf_id,bool setting)3286 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
3287 {
3288 struct i40e_netdev_priv *np = netdev_priv(netdev);
3289 struct i40e_pf *pf = np->vsi->back;
3290 struct i40e_vf *vf;
3291 int ret = 0;
3292
3293 /* validate the request */
3294 if (vf_id >= pf->num_alloc_vfs) {
3295 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
3296 return -EINVAL;
3297 }
3298
3299 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3300 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
3301 return -EINVAL;
3302 }
3303
3304 vf = &pf->vf[vf_id];
3305
3306 if (!vf)
3307 return -EINVAL;
3308 if (setting == vf->trusted)
3309 goto out;
3310
3311 vf->trusted = setting;
3312 i40e_vc_notify_vf_reset(vf);
3313 i40e_reset_vf(vf, false);
3314 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
3315 vf_id, setting ? "" : "un");
3316 out:
3317 return ret;
3318 }
3319