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[deliverable/linux.git] / drivers / net / ethernet / intel / i40e / i40e_virtchnl_pf.c
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 **/
41 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
42 enum i40e_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_STAT_INIT, &vf->vf_states) &&
54 !test_bit(I40E_VF_STAT_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 **/
71 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
72 {
73 struct i40e_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 = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
80 pfe.severity = I40E_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 = ls->link_speed;
89 }
90 i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
91 0, (u8 *)&pfe, sizeof(pfe), NULL);
92 }
93
94 /**
95 * i40e_vc_notify_link_state
96 * @pf: pointer to the PF structure
97 *
98 * send a link status message to all VFs on a given PF
99 **/
100 void i40e_vc_notify_link_state(struct i40e_pf *pf)
101 {
102 int i;
103
104 for (i = 0; i < pf->num_alloc_vfs; i++)
105 i40e_vc_notify_vf_link_state(&pf->vf[i]);
106 }
107
108 /**
109 * i40e_vc_notify_reset
110 * @pf: pointer to the PF structure
111 *
112 * indicate a pending reset to all VFs on a given PF
113 **/
114 void i40e_vc_notify_reset(struct i40e_pf *pf)
115 {
116 struct i40e_virtchnl_pf_event pfe;
117
118 pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
119 pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
120 i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, 0,
121 (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event));
122 }
123
124 /**
125 * i40e_vc_notify_vf_reset
126 * @vf: pointer to the VF structure
127 *
128 * indicate a pending reset to the given VF
129 **/
130 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
131 {
132 struct i40e_virtchnl_pf_event pfe;
133 int abs_vf_id;
134
135 /* validate the request */
136 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
137 return;
138
139 /* verify if the VF is in either init or active before proceeding */
140 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states) &&
141 !test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
142 return;
143
144 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
145
146 pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
147 pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
148 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
149 0, (u8 *)&pfe,
150 sizeof(struct i40e_virtchnl_pf_event), NULL);
151 }
152 /***********************misc routines*****************************/
153
154 /**
155 * i40e_vc_disable_vf
156 * @pf: pointer to the PF info
157 * @vf: pointer to the VF info
158 *
159 * Disable the VF through a SW reset
160 **/
161 static inline void i40e_vc_disable_vf(struct i40e_pf *pf, struct i40e_vf *vf)
162 {
163 i40e_vc_notify_vf_reset(vf);
164 i40e_reset_vf(vf, false);
165 }
166
167 /**
168 * i40e_vc_isvalid_vsi_id
169 * @vf: pointer to the VF info
170 * @vsi_id: VF relative VSI id
171 *
172 * check for the valid VSI id
173 **/
174 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
175 {
176 struct i40e_pf *pf = vf->pf;
177 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
178
179 return (vsi && (vsi->vf_id == vf->vf_id));
180 }
181
182 /**
183 * i40e_vc_isvalid_queue_id
184 * @vf: pointer to the VF info
185 * @vsi_id: vsi id
186 * @qid: vsi relative queue id
187 *
188 * check for the valid queue id
189 **/
190 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
191 u8 qid)
192 {
193 struct i40e_pf *pf = vf->pf;
194 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
195
196 return (vsi && (qid < vsi->alloc_queue_pairs));
197 }
198
199 /**
200 * i40e_vc_isvalid_vector_id
201 * @vf: pointer to the VF info
202 * @vector_id: VF relative vector id
203 *
204 * check for the valid vector id
205 **/
206 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
207 {
208 struct i40e_pf *pf = vf->pf;
209
210 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
211 }
212
213 /***********************vf resource mgmt routines*****************/
214
215 /**
216 * i40e_vc_get_pf_queue_id
217 * @vf: pointer to the VF info
218 * @vsi_id: id of VSI as provided by the FW
219 * @vsi_queue_id: vsi relative queue id
220 *
221 * return PF relative queue id
222 **/
223 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
224 u8 vsi_queue_id)
225 {
226 struct i40e_pf *pf = vf->pf;
227 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
228 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
229
230 if (!vsi)
231 return pf_queue_id;
232
233 if (le16_to_cpu(vsi->info.mapping_flags) &
234 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
235 pf_queue_id =
236 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
237 else
238 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
239 vsi_queue_id;
240
241 return pf_queue_id;
242 }
243
244 /**
245 * i40e_config_irq_link_list
246 * @vf: pointer to the VF info
247 * @vsi_id: id of VSI as given by the FW
248 * @vecmap: irq map info
249 *
250 * configure irq link list from the map
251 **/
252 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
253 struct i40e_virtchnl_vector_map *vecmap)
254 {
255 unsigned long linklistmap = 0, tempmap;
256 struct i40e_pf *pf = vf->pf;
257 struct i40e_hw *hw = &pf->hw;
258 u16 vsi_queue_id, pf_queue_id;
259 enum i40e_queue_type qtype;
260 u16 next_q, vector_id;
261 u32 reg, reg_idx;
262 u16 itr_idx = 0;
263
264 vector_id = vecmap->vector_id;
265 /* setup the head */
266 if (0 == vector_id)
267 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
268 else
269 reg_idx = I40E_VPINT_LNKLSTN(
270 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
271 (vector_id - 1));
272
273 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
274 /* Special case - No queues mapped on this vector */
275 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
276 goto irq_list_done;
277 }
278 tempmap = vecmap->rxq_map;
279 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
280 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
281 vsi_queue_id));
282 }
283
284 tempmap = vecmap->txq_map;
285 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
286 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
287 vsi_queue_id + 1));
288 }
289
290 next_q = find_first_bit(&linklistmap,
291 (I40E_MAX_VSI_QP *
292 I40E_VIRTCHNL_SUPPORTED_QTYPES));
293 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
294 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
295 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
296 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
297
298 wr32(hw, reg_idx, reg);
299
300 while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
301 switch (qtype) {
302 case I40E_QUEUE_TYPE_RX:
303 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
304 itr_idx = vecmap->rxitr_idx;
305 break;
306 case I40E_QUEUE_TYPE_TX:
307 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
308 itr_idx = vecmap->txitr_idx;
309 break;
310 default:
311 break;
312 }
313
314 next_q = find_next_bit(&linklistmap,
315 (I40E_MAX_VSI_QP *
316 I40E_VIRTCHNL_SUPPORTED_QTYPES),
317 next_q + 1);
318 if (next_q <
319 (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
320 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
321 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
322 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id,
323 vsi_queue_id);
324 } else {
325 pf_queue_id = I40E_QUEUE_END_OF_LIST;
326 qtype = 0;
327 }
328
329 /* format for the RQCTL & TQCTL regs is same */
330 reg = (vector_id) |
331 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
332 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
333 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
334 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
335 wr32(hw, reg_idx, reg);
336 }
337
338 /* if the vf is running in polling mode and using interrupt zero,
339 * need to disable auto-mask on enabling zero interrupt for VFs.
340 */
341 if ((vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
342 (vector_id == 0)) {
343 reg = rd32(hw, I40E_GLINT_CTL);
344 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
345 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
346 wr32(hw, I40E_GLINT_CTL, reg);
347 }
348 }
349
350 irq_list_done:
351 i40e_flush(hw);
352 }
353
354 /**
355 * i40e_release_iwarp_qvlist
356 * @vf: pointer to the VF.
357 *
358 **/
359 static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
360 {
361 struct i40e_pf *pf = vf->pf;
362 struct i40e_virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
363 u32 msix_vf;
364 u32 i;
365
366 if (!vf->qvlist_info)
367 return;
368
369 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
370 for (i = 0; i < qvlist_info->num_vectors; i++) {
371 struct i40e_virtchnl_iwarp_qv_info *qv_info;
372 u32 next_q_index, next_q_type;
373 struct i40e_hw *hw = &pf->hw;
374 u32 v_idx, reg_idx, reg;
375
376 qv_info = &qvlist_info->qv_info[i];
377 if (!qv_info)
378 continue;
379 v_idx = qv_info->v_idx;
380 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
381 /* Figure out the queue after CEQ and make that the
382 * first queue.
383 */
384 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
385 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
386 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
387 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
388 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
389 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
390
391 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
392 reg = (next_q_index &
393 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
394 (next_q_type <<
395 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
396
397 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
398 }
399 }
400 kfree(vf->qvlist_info);
401 vf->qvlist_info = NULL;
402 }
403
404 /**
405 * i40e_config_iwarp_qvlist
406 * @vf: pointer to the VF info
407 * @qvlist_info: queue and vector list
408 *
409 * Return 0 on success or < 0 on error
410 **/
411 static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
412 struct i40e_virtchnl_iwarp_qvlist_info *qvlist_info)
413 {
414 struct i40e_pf *pf = vf->pf;
415 struct i40e_hw *hw = &pf->hw;
416 struct i40e_virtchnl_iwarp_qv_info *qv_info;
417 u32 v_idx, i, reg_idx, reg;
418 u32 next_q_idx, next_q_type;
419 u32 msix_vf, size;
420
421 size = sizeof(struct i40e_virtchnl_iwarp_qvlist_info) +
422 (sizeof(struct i40e_virtchnl_iwarp_qv_info) *
423 (qvlist_info->num_vectors - 1));
424 vf->qvlist_info = kzalloc(size, GFP_KERNEL);
425 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
426
427 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
428 for (i = 0; i < qvlist_info->num_vectors; i++) {
429 qv_info = &qvlist_info->qv_info[i];
430 if (!qv_info)
431 continue;
432 v_idx = qv_info->v_idx;
433
434 /* Validate vector id belongs to this vf */
435 if (!i40e_vc_isvalid_vector_id(vf, v_idx))
436 goto err;
437
438 vf->qvlist_info->qv_info[i] = *qv_info;
439
440 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
441 /* We might be sharing the interrupt, so get the first queue
442 * index and type, push it down the list by adding the new
443 * queue on top. Also link it with the new queue in CEQCTL.
444 */
445 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
446 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
447 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
448 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
449 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
450
451 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
452 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
453 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
454 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
455 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
456 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
457 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
458 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
459
460 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
461 reg = (qv_info->ceq_idx &
462 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
463 (I40E_QUEUE_TYPE_PE_CEQ <<
464 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
465 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
466 }
467
468 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
469 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
470 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
471 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
472
473 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
474 }
475 }
476
477 return 0;
478 err:
479 kfree(vf->qvlist_info);
480 vf->qvlist_info = NULL;
481 return -EINVAL;
482 }
483
484 /**
485 * i40e_config_vsi_tx_queue
486 * @vf: pointer to the VF info
487 * @vsi_id: id of VSI as provided by the FW
488 * @vsi_queue_id: vsi relative queue index
489 * @info: config. info
490 *
491 * configure tx queue
492 **/
493 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
494 u16 vsi_queue_id,
495 struct i40e_virtchnl_txq_info *info)
496 {
497 struct i40e_pf *pf = vf->pf;
498 struct i40e_hw *hw = &pf->hw;
499 struct i40e_hmc_obj_txq tx_ctx;
500 struct i40e_vsi *vsi;
501 u16 pf_queue_id;
502 u32 qtx_ctl;
503 int ret = 0;
504
505 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
506 vsi = i40e_find_vsi_from_id(pf, vsi_id);
507
508 /* clear the context structure first */
509 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
510
511 /* only set the required fields */
512 tx_ctx.base = info->dma_ring_addr / 128;
513 tx_ctx.qlen = info->ring_len;
514 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
515 tx_ctx.rdylist_act = 0;
516 tx_ctx.head_wb_ena = info->headwb_enabled;
517 tx_ctx.head_wb_addr = info->dma_headwb_addr;
518
519 /* clear the context in the HMC */
520 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
521 if (ret) {
522 dev_err(&pf->pdev->dev,
523 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
524 pf_queue_id, ret);
525 ret = -ENOENT;
526 goto error_context;
527 }
528
529 /* set the context in the HMC */
530 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
531 if (ret) {
532 dev_err(&pf->pdev->dev,
533 "Failed to set VF LAN Tx queue context %d error: %d\n",
534 pf_queue_id, ret);
535 ret = -ENOENT;
536 goto error_context;
537 }
538
539 /* associate this queue with the PCI VF function */
540 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
541 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
542 & I40E_QTX_CTL_PF_INDX_MASK);
543 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
544 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
545 & I40E_QTX_CTL_VFVM_INDX_MASK);
546 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
547 i40e_flush(hw);
548
549 error_context:
550 return ret;
551 }
552
553 /**
554 * i40e_config_vsi_rx_queue
555 * @vf: pointer to the VF info
556 * @vsi_id: id of VSI as provided by the FW
557 * @vsi_queue_id: vsi relative queue index
558 * @info: config. info
559 *
560 * configure rx queue
561 **/
562 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
563 u16 vsi_queue_id,
564 struct i40e_virtchnl_rxq_info *info)
565 {
566 struct i40e_pf *pf = vf->pf;
567 struct i40e_hw *hw = &pf->hw;
568 struct i40e_hmc_obj_rxq rx_ctx;
569 u16 pf_queue_id;
570 int ret = 0;
571
572 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
573
574 /* clear the context structure first */
575 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
576
577 /* only set the required fields */
578 rx_ctx.base = info->dma_ring_addr / 128;
579 rx_ctx.qlen = info->ring_len;
580
581 if (info->splithdr_enabled) {
582 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
583 I40E_RX_SPLIT_IP |
584 I40E_RX_SPLIT_TCP_UDP |
585 I40E_RX_SPLIT_SCTP;
586 /* header length validation */
587 if (info->hdr_size > ((2 * 1024) - 64)) {
588 ret = -EINVAL;
589 goto error_param;
590 }
591 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
592
593 /* set split mode 10b */
594 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
595 }
596
597 /* databuffer length validation */
598 if (info->databuffer_size > ((16 * 1024) - 128)) {
599 ret = -EINVAL;
600 goto error_param;
601 }
602 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
603
604 /* max pkt. length validation */
605 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
606 ret = -EINVAL;
607 goto error_param;
608 }
609 rx_ctx.rxmax = info->max_pkt_size;
610
611 /* enable 32bytes desc always */
612 rx_ctx.dsize = 1;
613
614 /* default values */
615 rx_ctx.lrxqthresh = 2;
616 rx_ctx.crcstrip = 1;
617 rx_ctx.prefena = 1;
618 rx_ctx.l2tsel = 1;
619
620 /* clear the context in the HMC */
621 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
622 if (ret) {
623 dev_err(&pf->pdev->dev,
624 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
625 pf_queue_id, ret);
626 ret = -ENOENT;
627 goto error_param;
628 }
629
630 /* set the context in the HMC */
631 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
632 if (ret) {
633 dev_err(&pf->pdev->dev,
634 "Failed to set VF LAN Rx queue context %d error: %d\n",
635 pf_queue_id, ret);
636 ret = -ENOENT;
637 goto error_param;
638 }
639
640 error_param:
641 return ret;
642 }
643
644 /**
645 * i40e_alloc_vsi_res
646 * @vf: pointer to the VF info
647 * @type: type of VSI to allocate
648 *
649 * alloc VF vsi context & resources
650 **/
651 static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
652 {
653 struct i40e_mac_filter *f = NULL;
654 struct i40e_pf *pf = vf->pf;
655 struct i40e_vsi *vsi;
656 int ret = 0;
657
658 vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id);
659
660 if (!vsi) {
661 dev_err(&pf->pdev->dev,
662 "add vsi failed for VF %d, aq_err %d\n",
663 vf->vf_id, pf->hw.aq.asq_last_status);
664 ret = -ENOENT;
665 goto error_alloc_vsi_res;
666 }
667 if (type == I40E_VSI_SRIOV) {
668 u64 hena = i40e_pf_get_default_rss_hena(pf);
669
670 vf->lan_vsi_idx = vsi->idx;
671 vf->lan_vsi_id = vsi->id;
672 /* If the port VLAN has been configured and then the
673 * VF driver was removed then the VSI port VLAN
674 * configuration was destroyed. Check if there is
675 * a port VLAN and restore the VSI configuration if
676 * needed.
677 */
678 if (vf->port_vlan_id)
679 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
680
681 spin_lock_bh(&vsi->mac_filter_list_lock);
682 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
683 f = i40e_add_filter(vsi, vf->default_lan_addr.addr,
684 vf->port_vlan_id ? vf->port_vlan_id : -1,
685 true, false);
686 if (!f)
687 dev_info(&pf->pdev->dev,
688 "Could not add MAC filter %pM for VF %d\n",
689 vf->default_lan_addr.addr, vf->vf_id);
690 }
691 spin_unlock_bh(&vsi->mac_filter_list_lock);
692 i40e_write_rx_ctl(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id),
693 (u32)hena);
694 i40e_write_rx_ctl(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id),
695 (u32)(hena >> 32));
696 }
697
698 /* program mac filter */
699 ret = i40e_sync_vsi_filters(vsi);
700 if (ret)
701 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
702
703 /* Set VF bandwidth if specified */
704 if (vf->tx_rate) {
705 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
706 vf->tx_rate / 50, 0, NULL);
707 if (ret)
708 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
709 vf->vf_id, ret);
710 }
711
712 error_alloc_vsi_res:
713 return ret;
714 }
715
716 /**
717 * i40e_enable_vf_mappings
718 * @vf: pointer to the VF info
719 *
720 * enable VF mappings
721 **/
722 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
723 {
724 struct i40e_pf *pf = vf->pf;
725 struct i40e_hw *hw = &pf->hw;
726 u32 reg, total_queue_pairs = 0;
727 int j;
728
729 /* Tell the hardware we're using noncontiguous mapping. HW requires
730 * that VF queues be mapped using this method, even when they are
731 * contiguous in real life
732 */
733 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
734 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
735
736 /* enable VF vplan_qtable mappings */
737 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
738 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
739
740 /* map PF queues to VF queues */
741 for (j = 0; j < pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; j++) {
742 u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id, j);
743
744 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
745 wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg);
746 total_queue_pairs++;
747 }
748
749 /* map PF queues to VSI */
750 for (j = 0; j < 7; j++) {
751 if (j * 2 >= pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs) {
752 reg = 0x07FF07FF; /* unused */
753 } else {
754 u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
755 j * 2);
756 reg = qid;
757 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
758 (j * 2) + 1);
759 reg |= qid << 16;
760 }
761 i40e_write_rx_ctl(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id),
762 reg);
763 }
764
765 i40e_flush(hw);
766 }
767
768 /**
769 * i40e_disable_vf_mappings
770 * @vf: pointer to the VF info
771 *
772 * disable VF mappings
773 **/
774 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
775 {
776 struct i40e_pf *pf = vf->pf;
777 struct i40e_hw *hw = &pf->hw;
778 int i;
779
780 /* disable qp mappings */
781 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
782 for (i = 0; i < I40E_MAX_VSI_QP; i++)
783 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
784 I40E_QUEUE_END_OF_LIST);
785 i40e_flush(hw);
786 }
787
788 /**
789 * i40e_free_vf_res
790 * @vf: pointer to the VF info
791 *
792 * free VF resources
793 **/
794 static void i40e_free_vf_res(struct i40e_vf *vf)
795 {
796 struct i40e_pf *pf = vf->pf;
797 struct i40e_hw *hw = &pf->hw;
798 u32 reg_idx, reg;
799 int i, msix_vf;
800
801 /* free vsi & disconnect it from the parent uplink */
802 if (vf->lan_vsi_idx) {
803 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
804 vf->lan_vsi_idx = 0;
805 vf->lan_vsi_id = 0;
806 }
807 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
808
809 /* disable interrupts so the VF starts in a known state */
810 for (i = 0; i < msix_vf; i++) {
811 /* format is same for both registers */
812 if (0 == i)
813 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
814 else
815 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
816 (vf->vf_id))
817 + (i - 1));
818 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
819 i40e_flush(hw);
820 }
821
822 /* clear the irq settings */
823 for (i = 0; i < msix_vf; i++) {
824 /* format is same for both registers */
825 if (0 == i)
826 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
827 else
828 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
829 (vf->vf_id))
830 + (i - 1));
831 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
832 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
833 wr32(hw, reg_idx, reg);
834 i40e_flush(hw);
835 }
836 /* reset some of the state varibles keeping
837 * track of the resources
838 */
839 vf->num_queue_pairs = 0;
840 vf->vf_states = 0;
841 clear_bit(I40E_VF_STAT_INIT, &vf->vf_states);
842 }
843
844 /**
845 * i40e_alloc_vf_res
846 * @vf: pointer to the VF info
847 *
848 * allocate VF resources
849 **/
850 static int i40e_alloc_vf_res(struct i40e_vf *vf)
851 {
852 struct i40e_pf *pf = vf->pf;
853 int total_queue_pairs = 0;
854 int ret;
855
856 /* allocate hw vsi context & associated resources */
857 ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV);
858 if (ret)
859 goto error_alloc;
860 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
861
862 if (vf->trusted)
863 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
864 else
865 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
866
867 /* store the total qps number for the runtime
868 * VF req validation
869 */
870 vf->num_queue_pairs = total_queue_pairs;
871
872 /* VF is now completely initialized */
873 set_bit(I40E_VF_STAT_INIT, &vf->vf_states);
874
875 error_alloc:
876 if (ret)
877 i40e_free_vf_res(vf);
878
879 return ret;
880 }
881
882 #define VF_DEVICE_STATUS 0xAA
883 #define VF_TRANS_PENDING_MASK 0x20
884 /**
885 * i40e_quiesce_vf_pci
886 * @vf: pointer to the VF structure
887 *
888 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
889 * if the transactions never clear.
890 **/
891 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
892 {
893 struct i40e_pf *pf = vf->pf;
894 struct i40e_hw *hw = &pf->hw;
895 int vf_abs_id, i;
896 u32 reg;
897
898 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
899
900 wr32(hw, I40E_PF_PCI_CIAA,
901 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
902 for (i = 0; i < 100; i++) {
903 reg = rd32(hw, I40E_PF_PCI_CIAD);
904 if ((reg & VF_TRANS_PENDING_MASK) == 0)
905 return 0;
906 udelay(1);
907 }
908 return -EIO;
909 }
910
911 /**
912 * i40e_reset_vf
913 * @vf: pointer to the VF structure
914 * @flr: VFLR was issued or not
915 *
916 * reset the VF
917 **/
918 void i40e_reset_vf(struct i40e_vf *vf, bool flr)
919 {
920 struct i40e_pf *pf = vf->pf;
921 struct i40e_hw *hw = &pf->hw;
922 u32 reg, reg_idx, bit_idx;
923 bool rsd = false;
924 int i;
925
926 if (test_and_set_bit(__I40E_VF_DISABLE, &pf->state))
927 return;
928
929 /* warn the VF */
930 clear_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
931
932 /* In the case of a VFLR, the HW has already reset the VF and we
933 * just need to clean up, so don't hit the VFRTRIG register.
934 */
935 if (!flr) {
936 /* reset VF using VPGEN_VFRTRIG reg */
937 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
938 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
939 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
940 i40e_flush(hw);
941 }
942 /* clear the VFLR bit in GLGEN_VFLRSTAT */
943 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
944 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
945 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
946 i40e_flush(hw);
947
948 if (i40e_quiesce_vf_pci(vf))
949 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
950 vf->vf_id);
951
952 /* poll VPGEN_VFRSTAT reg to make sure
953 * that reset is complete
954 */
955 for (i = 0; i < 10; i++) {
956 /* VF reset requires driver to first reset the VF and then
957 * poll the status register to make sure that the reset
958 * completed successfully. Due to internal HW FIFO flushes,
959 * we must wait 10ms before the register will be valid.
960 */
961 usleep_range(10000, 20000);
962 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
963 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
964 rsd = true;
965 break;
966 }
967 }
968
969 if (flr)
970 usleep_range(10000, 20000);
971
972 if (!rsd)
973 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
974 vf->vf_id);
975 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_COMPLETED);
976 /* clear the reset bit in the VPGEN_VFRTRIG reg */
977 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
978 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
979 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
980
981 /* On initial reset, we won't have any queues */
982 if (vf->lan_vsi_idx == 0)
983 goto complete_reset;
984
985 i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false);
986 complete_reset:
987 /* reallocate VF resources to reset the VSI state */
988 i40e_free_vf_res(vf);
989 if (!i40e_alloc_vf_res(vf)) {
990 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
991 i40e_enable_vf_mappings(vf);
992 set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
993 clear_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
994 /* Do not notify the client during VF init */
995 if (vf->pf->num_alloc_vfs)
996 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
997 vf->num_vlan = 0;
998 }
999 /* tell the VF the reset is done */
1000 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE);
1001
1002 i40e_flush(hw);
1003 clear_bit(__I40E_VF_DISABLE, &pf->state);
1004 }
1005
1006 /**
1007 * i40e_free_vfs
1008 * @pf: pointer to the PF structure
1009 *
1010 * free VF resources
1011 **/
1012 void i40e_free_vfs(struct i40e_pf *pf)
1013 {
1014 struct i40e_hw *hw = &pf->hw;
1015 u32 reg_idx, bit_idx;
1016 int i, tmp, vf_id;
1017
1018 if (!pf->vf)
1019 return;
1020 while (test_and_set_bit(__I40E_VF_DISABLE, &pf->state))
1021 usleep_range(1000, 2000);
1022
1023 i40e_notify_client_of_vf_enable(pf, 0);
1024 for (i = 0; i < pf->num_alloc_vfs; i++)
1025 if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
1026 i40e_vsi_control_rings(pf->vsi[pf->vf[i].lan_vsi_idx],
1027 false);
1028
1029 /* Disable IOV before freeing resources. This lets any VF drivers
1030 * running in the host get themselves cleaned up before we yank
1031 * the carpet out from underneath their feet.
1032 */
1033 if (!pci_vfs_assigned(pf->pdev))
1034 pci_disable_sriov(pf->pdev);
1035 else
1036 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1037
1038 msleep(20); /* let any messages in transit get finished up */
1039
1040 /* free up VF resources */
1041 tmp = pf->num_alloc_vfs;
1042 pf->num_alloc_vfs = 0;
1043 for (i = 0; i < tmp; i++) {
1044 if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
1045 i40e_free_vf_res(&pf->vf[i]);
1046 /* disable qp mappings */
1047 i40e_disable_vf_mappings(&pf->vf[i]);
1048 }
1049
1050 kfree(pf->vf);
1051 pf->vf = NULL;
1052
1053 /* This check is for when the driver is unloaded while VFs are
1054 * assigned. Setting the number of VFs to 0 through sysfs is caught
1055 * before this function ever gets called.
1056 */
1057 if (!pci_vfs_assigned(pf->pdev)) {
1058 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1059 * work correctly when SR-IOV gets re-enabled.
1060 */
1061 for (vf_id = 0; vf_id < tmp; vf_id++) {
1062 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1063 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1064 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1065 }
1066 }
1067 clear_bit(__I40E_VF_DISABLE, &pf->state);
1068 }
1069
1070 #ifdef CONFIG_PCI_IOV
1071 /**
1072 * i40e_alloc_vfs
1073 * @pf: pointer to the PF structure
1074 * @num_alloc_vfs: number of VFs to allocate
1075 *
1076 * allocate VF resources
1077 **/
1078 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1079 {
1080 struct i40e_vf *vfs;
1081 int i, ret = 0;
1082
1083 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1084 i40e_irq_dynamic_disable_icr0(pf);
1085
1086 /* Check to see if we're just allocating resources for extant VFs */
1087 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1088 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1089 if (ret) {
1090 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1091 pf->num_alloc_vfs = 0;
1092 goto err_iov;
1093 }
1094 }
1095 /* allocate memory */
1096 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1097 if (!vfs) {
1098 ret = -ENOMEM;
1099 goto err_alloc;
1100 }
1101 pf->vf = vfs;
1102
1103 /* apply default profile */
1104 for (i = 0; i < num_alloc_vfs; i++) {
1105 vfs[i].pf = pf;
1106 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1107 vfs[i].vf_id = i;
1108
1109 /* assign default capabilities */
1110 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1111 vfs[i].spoofchk = true;
1112 /* VF resources get allocated during reset */
1113 i40e_reset_vf(&vfs[i], false);
1114
1115 }
1116 pf->num_alloc_vfs = num_alloc_vfs;
1117
1118 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1119
1120 err_alloc:
1121 if (ret)
1122 i40e_free_vfs(pf);
1123 err_iov:
1124 /* Re-enable interrupt 0. */
1125 i40e_irq_dynamic_enable_icr0(pf, false);
1126 return ret;
1127 }
1128
1129 #endif
1130 /**
1131 * i40e_pci_sriov_enable
1132 * @pdev: pointer to a pci_dev structure
1133 * @num_vfs: number of VFs to allocate
1134 *
1135 * Enable or change the number of VFs
1136 **/
1137 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1138 {
1139 #ifdef CONFIG_PCI_IOV
1140 struct i40e_pf *pf = pci_get_drvdata(pdev);
1141 int pre_existing_vfs = pci_num_vf(pdev);
1142 int err = 0;
1143
1144 if (test_bit(__I40E_TESTING, &pf->state)) {
1145 dev_warn(&pdev->dev,
1146 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1147 err = -EPERM;
1148 goto err_out;
1149 }
1150
1151 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1152 i40e_free_vfs(pf);
1153 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1154 goto out;
1155
1156 if (num_vfs > pf->num_req_vfs) {
1157 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1158 num_vfs, pf->num_req_vfs);
1159 err = -EPERM;
1160 goto err_out;
1161 }
1162
1163 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1164 err = i40e_alloc_vfs(pf, num_vfs);
1165 if (err) {
1166 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1167 goto err_out;
1168 }
1169
1170 out:
1171 return num_vfs;
1172
1173 err_out:
1174 return err;
1175 #endif
1176 return 0;
1177 }
1178
1179 /**
1180 * i40e_pci_sriov_configure
1181 * @pdev: pointer to a pci_dev structure
1182 * @num_vfs: number of VFs to allocate
1183 *
1184 * Enable or change the number of VFs. Called when the user updates the number
1185 * of VFs in sysfs.
1186 **/
1187 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1188 {
1189 struct i40e_pf *pf = pci_get_drvdata(pdev);
1190
1191 if (num_vfs) {
1192 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1193 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1194 i40e_do_reset_safe(pf,
1195 BIT_ULL(__I40E_PF_RESET_REQUESTED));
1196 }
1197 return i40e_pci_sriov_enable(pdev, num_vfs);
1198 }
1199
1200 if (!pci_vfs_assigned(pf->pdev)) {
1201 i40e_free_vfs(pf);
1202 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1203 i40e_do_reset_safe(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
1204 } else {
1205 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1206 return -EINVAL;
1207 }
1208 return 0;
1209 }
1210
1211 /***********************virtual channel routines******************/
1212
1213 /**
1214 * i40e_vc_send_msg_to_vf
1215 * @vf: pointer to the VF info
1216 * @v_opcode: virtual channel opcode
1217 * @v_retval: virtual channel return value
1218 * @msg: pointer to the msg buffer
1219 * @msglen: msg length
1220 *
1221 * send msg to VF
1222 **/
1223 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1224 u32 v_retval, u8 *msg, u16 msglen)
1225 {
1226 struct i40e_pf *pf;
1227 struct i40e_hw *hw;
1228 int abs_vf_id;
1229 i40e_status aq_ret;
1230
1231 /* validate the request */
1232 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1233 return -EINVAL;
1234
1235 pf = vf->pf;
1236 hw = &pf->hw;
1237 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1238
1239 /* single place to detect unsuccessful return values */
1240 if (v_retval) {
1241 vf->num_invalid_msgs++;
1242 dev_info(&pf->pdev->dev, "VF %d failed opcode %d, retval: %d\n",
1243 vf->vf_id, v_opcode, v_retval);
1244 if (vf->num_invalid_msgs >
1245 I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
1246 dev_err(&pf->pdev->dev,
1247 "Number of invalid messages exceeded for VF %d\n",
1248 vf->vf_id);
1249 dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
1250 set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
1251 }
1252 } else {
1253 vf->num_valid_msgs++;
1254 /* reset the invalid counter, if a valid message is received. */
1255 vf->num_invalid_msgs = 0;
1256 }
1257
1258 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1259 msg, msglen, NULL);
1260 if (aq_ret) {
1261 dev_info(&pf->pdev->dev,
1262 "Unable to send the message to VF %d aq_err %d\n",
1263 vf->vf_id, pf->hw.aq.asq_last_status);
1264 return -EIO;
1265 }
1266
1267 return 0;
1268 }
1269
1270 /**
1271 * i40e_vc_send_resp_to_vf
1272 * @vf: pointer to the VF info
1273 * @opcode: operation code
1274 * @retval: return value
1275 *
1276 * send resp msg to VF
1277 **/
1278 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1279 enum i40e_virtchnl_ops opcode,
1280 i40e_status retval)
1281 {
1282 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1283 }
1284
1285 /**
1286 * i40e_vc_get_version_msg
1287 * @vf: pointer to the VF info
1288 *
1289 * called from the VF to request the API version used by the PF
1290 **/
1291 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
1292 {
1293 struct i40e_virtchnl_version_info info = {
1294 I40E_VIRTCHNL_VERSION_MAJOR, I40E_VIRTCHNL_VERSION_MINOR
1295 };
1296
1297 vf->vf_ver = *(struct i40e_virtchnl_version_info *)msg;
1298 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
1299 if (VF_IS_V10(vf))
1300 info.minor = I40E_VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
1301 return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_VERSION,
1302 I40E_SUCCESS, (u8 *)&info,
1303 sizeof(struct
1304 i40e_virtchnl_version_info));
1305 }
1306
1307 /**
1308 * i40e_vc_get_vf_resources_msg
1309 * @vf: pointer to the VF info
1310 * @msg: pointer to the msg buffer
1311 * @msglen: msg length
1312 *
1313 * called from the VF to request its resources
1314 **/
1315 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
1316 {
1317 struct i40e_virtchnl_vf_resource *vfres = NULL;
1318 struct i40e_pf *pf = vf->pf;
1319 i40e_status aq_ret = 0;
1320 struct i40e_vsi *vsi;
1321 int num_vsis = 1;
1322 int len = 0;
1323 int ret;
1324
1325 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
1326 aq_ret = I40E_ERR_PARAM;
1327 goto err;
1328 }
1329
1330 len = (sizeof(struct i40e_virtchnl_vf_resource) +
1331 sizeof(struct i40e_virtchnl_vsi_resource) * num_vsis);
1332
1333 vfres = kzalloc(len, GFP_KERNEL);
1334 if (!vfres) {
1335 aq_ret = I40E_ERR_NO_MEMORY;
1336 len = 0;
1337 goto err;
1338 }
1339 if (VF_IS_V11(vf))
1340 vf->driver_caps = *(u32 *)msg;
1341 else
1342 vf->driver_caps = I40E_VIRTCHNL_VF_OFFLOAD_L2 |
1343 I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG |
1344 I40E_VIRTCHNL_VF_OFFLOAD_VLAN;
1345
1346 vfres->vf_offload_flags = I40E_VIRTCHNL_VF_OFFLOAD_L2;
1347 vsi = pf->vsi[vf->lan_vsi_idx];
1348 if (!vsi->info.pvid)
1349 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_VLAN;
1350
1351 if (i40e_vf_client_capable(pf, vf->vf_id, I40E_CLIENT_IWARP) &&
1352 (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_IWARP)) {
1353 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_IWARP;
1354 set_bit(I40E_VF_STAT_IWARPENA, &vf->vf_states);
1355 }
1356
1357 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF) {
1358 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF;
1359 } else {
1360 if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
1361 (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ))
1362 vfres->vf_offload_flags |=
1363 I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ;
1364 else
1365 vfres->vf_offload_flags |=
1366 I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG;
1367 }
1368
1369 if (pf->flags & I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
1370 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1371 vfres->vf_offload_flags |=
1372 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
1373 }
1374
1375 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
1376 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
1377 dev_err(&pf->pdev->dev,
1378 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
1379 vf->vf_id);
1380 ret = I40E_ERR_PARAM;
1381 goto err;
1382 }
1383 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING;
1384 }
1385
1386 if (pf->flags & I40E_FLAG_WB_ON_ITR_CAPABLE) {
1387 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
1388 vfres->vf_offload_flags |=
1389 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
1390 }
1391
1392 vfres->num_vsis = num_vsis;
1393 vfres->num_queue_pairs = vf->num_queue_pairs;
1394 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
1395 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
1396 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
1397
1398 if (vf->lan_vsi_idx) {
1399 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
1400 vfres->vsi_res[0].vsi_type = I40E_VSI_SRIOV;
1401 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
1402 /* VFs only use TC 0 */
1403 vfres->vsi_res[0].qset_handle
1404 = le16_to_cpu(vsi->info.qs_handle[0]);
1405 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
1406 vf->default_lan_addr.addr);
1407 }
1408 set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
1409
1410 err:
1411 /* send the response back to the VF */
1412 ret = i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
1413 aq_ret, (u8 *)vfres, len);
1414
1415 kfree(vfres);
1416 return ret;
1417 }
1418
1419 /**
1420 * i40e_vc_reset_vf_msg
1421 * @vf: pointer to the VF info
1422 * @msg: pointer to the msg buffer
1423 * @msglen: msg length
1424 *
1425 * called from the VF to reset itself,
1426 * unlike other virtchnl messages, PF driver
1427 * doesn't send the response back to the VF
1428 **/
1429 static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
1430 {
1431 if (test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
1432 i40e_reset_vf(vf, false);
1433 }
1434
1435 /**
1436 * i40e_getnum_vf_vsi_vlan_filters
1437 * @vsi: pointer to the vsi
1438 *
1439 * called to get the number of VLANs offloaded on this VF
1440 **/
1441 static inline int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1442 {
1443 struct i40e_mac_filter *f;
1444 int num_vlans = 0;
1445
1446 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1447 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1448 num_vlans++;
1449 }
1450
1451 return num_vlans;
1452 }
1453
1454 /**
1455 * i40e_vc_config_promiscuous_mode_msg
1456 * @vf: pointer to the VF info
1457 * @msg: pointer to the msg buffer
1458 * @msglen: msg length
1459 *
1460 * called from the VF to configure the promiscuous mode of
1461 * VF vsis
1462 **/
1463 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf,
1464 u8 *msg, u16 msglen)
1465 {
1466 struct i40e_virtchnl_promisc_info *info =
1467 (struct i40e_virtchnl_promisc_info *)msg;
1468 struct i40e_pf *pf = vf->pf;
1469 struct i40e_hw *hw = &pf->hw;
1470 struct i40e_mac_filter *f;
1471 i40e_status aq_ret = 0;
1472 bool allmulti = false;
1473 struct i40e_vsi *vsi;
1474 bool alluni = false;
1475 int aq_err = 0;
1476
1477 vsi = i40e_find_vsi_from_id(pf, info->vsi_id);
1478 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1479 !i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
1480 aq_ret = I40E_ERR_PARAM;
1481 goto error_param;
1482 }
1483 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
1484 dev_err(&pf->pdev->dev,
1485 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
1486 vf->vf_id);
1487 /* Lie to the VF on purpose. */
1488 aq_ret = 0;
1489 goto error_param;
1490 }
1491 /* Multicast promiscuous handling*/
1492 if (info->flags & I40E_FLAG_VF_MULTICAST_PROMISC)
1493 allmulti = true;
1494
1495 if (vf->port_vlan_id) {
1496 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, vsi->seid,
1497 allmulti,
1498 vf->port_vlan_id,
1499 NULL);
1500 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1501 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1502 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1503 continue;
1504 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw,
1505 vsi->seid,
1506 allmulti,
1507 f->vlan,
1508 NULL);
1509 aq_err = pf->hw.aq.asq_last_status;
1510 if (aq_ret) {
1511 dev_err(&pf->pdev->dev,
1512 "Could not add VLAN %d to multicast promiscuous domain err %s aq_err %s\n",
1513 f->vlan,
1514 i40e_stat_str(&pf->hw, aq_ret),
1515 i40e_aq_str(&pf->hw, aq_err));
1516 break;
1517 }
1518 }
1519 } else {
1520 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid,
1521 allmulti, NULL);
1522 aq_err = pf->hw.aq.asq_last_status;
1523 if (aq_ret) {
1524 dev_err(&pf->pdev->dev,
1525 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1526 vf->vf_id,
1527 i40e_stat_str(&pf->hw, aq_ret),
1528 i40e_aq_str(&pf->hw, aq_err));
1529 goto error_param_int;
1530 }
1531 }
1532
1533 if (!aq_ret) {
1534 dev_info(&pf->pdev->dev,
1535 "VF %d successfully set multicast promiscuous mode\n",
1536 vf->vf_id);
1537 if (allmulti)
1538 set_bit(I40E_VF_STAT_MC_PROMISC, &vf->vf_states);
1539 else
1540 clear_bit(I40E_VF_STAT_MC_PROMISC, &vf->vf_states);
1541 }
1542
1543 if (info->flags & I40E_FLAG_VF_UNICAST_PROMISC)
1544 alluni = true;
1545 if (vf->port_vlan_id) {
1546 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, vsi->seid,
1547 alluni,
1548 vf->port_vlan_id,
1549 NULL);
1550 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1551 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1552 aq_ret = 0;
1553 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID) {
1554 aq_ret =
1555 i40e_aq_set_vsi_uc_promisc_on_vlan(hw,
1556 vsi->seid,
1557 alluni,
1558 f->vlan,
1559 NULL);
1560 aq_err = pf->hw.aq.asq_last_status;
1561 }
1562 if (aq_ret)
1563 dev_err(&pf->pdev->dev,
1564 "Could not add VLAN %d to Unicast promiscuous domain err %s aq_err %s\n",
1565 f->vlan,
1566 i40e_stat_str(&pf->hw, aq_ret),
1567 i40e_aq_str(&pf->hw, aq_err));
1568 }
1569 } else {
1570 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, vsi->seid,
1571 allmulti, NULL,
1572 true);
1573 aq_err = pf->hw.aq.asq_last_status;
1574 if (aq_ret)
1575 dev_err(&pf->pdev->dev,
1576 "VF %d failed to set unicast promiscuous mode %8.8x err %s aq_err %s\n",
1577 vf->vf_id, info->flags,
1578 i40e_stat_str(&pf->hw, aq_ret),
1579 i40e_aq_str(&pf->hw, aq_err));
1580 }
1581
1582 error_param_int:
1583 if (!aq_ret) {
1584 dev_info(&pf->pdev->dev,
1585 "VF %d successfully set unicast promiscuous mode\n",
1586 vf->vf_id);
1587 if (alluni)
1588 set_bit(I40E_VF_STAT_UC_PROMISC, &vf->vf_states);
1589 else
1590 clear_bit(I40E_VF_STAT_UC_PROMISC, &vf->vf_states);
1591 }
1592
1593 error_param:
1594 /* send the response to the VF */
1595 return i40e_vc_send_resp_to_vf(vf,
1596 I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
1597 aq_ret);
1598 }
1599
1600 /**
1601 * i40e_vc_config_queues_msg
1602 * @vf: pointer to the VF info
1603 * @msg: pointer to the msg buffer
1604 * @msglen: msg length
1605 *
1606 * called from the VF to configure the rx/tx
1607 * queues
1608 **/
1609 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1610 {
1611 struct i40e_virtchnl_vsi_queue_config_info *qci =
1612 (struct i40e_virtchnl_vsi_queue_config_info *)msg;
1613 struct i40e_virtchnl_queue_pair_info *qpi;
1614 struct i40e_pf *pf = vf->pf;
1615 u16 vsi_id, vsi_queue_id;
1616 i40e_status aq_ret = 0;
1617 int i;
1618
1619 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1620 aq_ret = I40E_ERR_PARAM;
1621 goto error_param;
1622 }
1623
1624 vsi_id = qci->vsi_id;
1625 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1626 aq_ret = I40E_ERR_PARAM;
1627 goto error_param;
1628 }
1629 for (i = 0; i < qci->num_queue_pairs; i++) {
1630 qpi = &qci->qpair[i];
1631 vsi_queue_id = qpi->txq.queue_id;
1632 if ((qpi->txq.vsi_id != vsi_id) ||
1633 (qpi->rxq.vsi_id != vsi_id) ||
1634 (qpi->rxq.queue_id != vsi_queue_id) ||
1635 !i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) {
1636 aq_ret = I40E_ERR_PARAM;
1637 goto error_param;
1638 }
1639
1640 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
1641 &qpi->rxq) ||
1642 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
1643 &qpi->txq)) {
1644 aq_ret = I40E_ERR_PARAM;
1645 goto error_param;
1646 }
1647 }
1648 /* set vsi num_queue_pairs in use to num configured by VF */
1649 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs = qci->num_queue_pairs;
1650
1651 error_param:
1652 /* send the response to the VF */
1653 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
1654 aq_ret);
1655 }
1656
1657 /**
1658 * i40e_vc_config_irq_map_msg
1659 * @vf: pointer to the VF info
1660 * @msg: pointer to the msg buffer
1661 * @msglen: msg length
1662 *
1663 * called from the VF to configure the irq to
1664 * queue map
1665 **/
1666 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1667 {
1668 struct i40e_virtchnl_irq_map_info *irqmap_info =
1669 (struct i40e_virtchnl_irq_map_info *)msg;
1670 struct i40e_virtchnl_vector_map *map;
1671 u16 vsi_id, vsi_queue_id, vector_id;
1672 i40e_status aq_ret = 0;
1673 unsigned long tempmap;
1674 int i;
1675
1676 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1677 aq_ret = I40E_ERR_PARAM;
1678 goto error_param;
1679 }
1680
1681 for (i = 0; i < irqmap_info->num_vectors; i++) {
1682 map = &irqmap_info->vecmap[i];
1683
1684 vector_id = map->vector_id;
1685 vsi_id = map->vsi_id;
1686 /* validate msg params */
1687 if (!i40e_vc_isvalid_vector_id(vf, vector_id) ||
1688 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1689 aq_ret = I40E_ERR_PARAM;
1690 goto error_param;
1691 }
1692
1693 /* lookout for the invalid queue index */
1694 tempmap = map->rxq_map;
1695 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1696 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
1697 vsi_queue_id)) {
1698 aq_ret = I40E_ERR_PARAM;
1699 goto error_param;
1700 }
1701 }
1702
1703 tempmap = map->txq_map;
1704 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1705 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
1706 vsi_queue_id)) {
1707 aq_ret = I40E_ERR_PARAM;
1708 goto error_param;
1709 }
1710 }
1711
1712 i40e_config_irq_link_list(vf, vsi_id, map);
1713 }
1714 error_param:
1715 /* send the response to the VF */
1716 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
1717 aq_ret);
1718 }
1719
1720 /**
1721 * i40e_vc_enable_queues_msg
1722 * @vf: pointer to the VF info
1723 * @msg: pointer to the msg buffer
1724 * @msglen: msg length
1725 *
1726 * called from the VF to enable all or specific queue(s)
1727 **/
1728 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1729 {
1730 struct i40e_virtchnl_queue_select *vqs =
1731 (struct i40e_virtchnl_queue_select *)msg;
1732 struct i40e_pf *pf = vf->pf;
1733 u16 vsi_id = vqs->vsi_id;
1734 i40e_status aq_ret = 0;
1735
1736 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1737 aq_ret = I40E_ERR_PARAM;
1738 goto error_param;
1739 }
1740
1741 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1742 aq_ret = I40E_ERR_PARAM;
1743 goto error_param;
1744 }
1745
1746 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
1747 aq_ret = I40E_ERR_PARAM;
1748 goto error_param;
1749 }
1750
1751 if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], true))
1752 aq_ret = I40E_ERR_TIMEOUT;
1753 error_param:
1754 /* send the response to the VF */
1755 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
1756 aq_ret);
1757 }
1758
1759 /**
1760 * i40e_vc_disable_queues_msg
1761 * @vf: pointer to the VF info
1762 * @msg: pointer to the msg buffer
1763 * @msglen: msg length
1764 *
1765 * called from the VF to disable all or specific
1766 * queue(s)
1767 **/
1768 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1769 {
1770 struct i40e_virtchnl_queue_select *vqs =
1771 (struct i40e_virtchnl_queue_select *)msg;
1772 struct i40e_pf *pf = vf->pf;
1773 i40e_status aq_ret = 0;
1774
1775 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1776 aq_ret = I40E_ERR_PARAM;
1777 goto error_param;
1778 }
1779
1780 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1781 aq_ret = I40E_ERR_PARAM;
1782 goto error_param;
1783 }
1784
1785 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
1786 aq_ret = I40E_ERR_PARAM;
1787 goto error_param;
1788 }
1789
1790 if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false))
1791 aq_ret = I40E_ERR_TIMEOUT;
1792
1793 error_param:
1794 /* send the response to the VF */
1795 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
1796 aq_ret);
1797 }
1798
1799 /**
1800 * i40e_vc_get_stats_msg
1801 * @vf: pointer to the VF info
1802 * @msg: pointer to the msg buffer
1803 * @msglen: msg length
1804 *
1805 * called from the VF to get vsi stats
1806 **/
1807 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1808 {
1809 struct i40e_virtchnl_queue_select *vqs =
1810 (struct i40e_virtchnl_queue_select *)msg;
1811 struct i40e_pf *pf = vf->pf;
1812 struct i40e_eth_stats stats;
1813 i40e_status aq_ret = 0;
1814 struct i40e_vsi *vsi;
1815
1816 memset(&stats, 0, sizeof(struct i40e_eth_stats));
1817
1818 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1819 aq_ret = I40E_ERR_PARAM;
1820 goto error_param;
1821 }
1822
1823 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1824 aq_ret = I40E_ERR_PARAM;
1825 goto error_param;
1826 }
1827
1828 vsi = pf->vsi[vf->lan_vsi_idx];
1829 if (!vsi) {
1830 aq_ret = I40E_ERR_PARAM;
1831 goto error_param;
1832 }
1833 i40e_update_eth_stats(vsi);
1834 stats = vsi->eth_stats;
1835
1836 error_param:
1837 /* send the response back to the VF */
1838 return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_STATS, aq_ret,
1839 (u8 *)&stats, sizeof(stats));
1840 }
1841
1842 /* If the VF is not trusted restrict the number of MAC/VLAN it can program */
1843 #define I40E_VC_MAX_MAC_ADDR_PER_VF 8
1844 #define I40E_VC_MAX_VLAN_PER_VF 8
1845
1846 /**
1847 * i40e_check_vf_permission
1848 * @vf: pointer to the VF info
1849 * @macaddr: pointer to the MAC Address being checked
1850 *
1851 * Check if the VF has permission to add or delete unicast MAC address
1852 * filters and return error code -EPERM if not. Then check if the
1853 * address filter requested is broadcast or zero and if so return
1854 * an invalid MAC address error code.
1855 **/
1856 static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr)
1857 {
1858 struct i40e_pf *pf = vf->pf;
1859 int ret = 0;
1860
1861 if (is_broadcast_ether_addr(macaddr) ||
1862 is_zero_ether_addr(macaddr)) {
1863 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr);
1864 ret = I40E_ERR_INVALID_MAC_ADDR;
1865 } else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr) &&
1866 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
1867 !ether_addr_equal(macaddr, vf->default_lan_addr.addr)) {
1868 /* If the host VMM administrator has set the VF MAC address
1869 * administratively via the ndo_set_vf_mac command then deny
1870 * permission to the VF to add or delete unicast MAC addresses.
1871 * Unless the VF is privileged and then it can do whatever.
1872 * The VF may request to set the MAC address filter already
1873 * assigned to it so do not return an error in that case.
1874 */
1875 dev_err(&pf->pdev->dev,
1876 "VF attempting to override administratively set MAC address, reload the VF driver to resume normal operation\n");
1877 ret = -EPERM;
1878 } else if ((vf->num_mac >= I40E_VC_MAX_MAC_ADDR_PER_VF) &&
1879 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
1880 dev_err(&pf->pdev->dev,
1881 "VF is not trusted, switch the VF to trusted to add more functionality\n");
1882 ret = -EPERM;
1883 }
1884 return ret;
1885 }
1886
1887 /**
1888 * i40e_vc_add_mac_addr_msg
1889 * @vf: pointer to the VF info
1890 * @msg: pointer to the msg buffer
1891 * @msglen: msg length
1892 *
1893 * add guest mac address filter
1894 **/
1895 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1896 {
1897 struct i40e_virtchnl_ether_addr_list *al =
1898 (struct i40e_virtchnl_ether_addr_list *)msg;
1899 struct i40e_pf *pf = vf->pf;
1900 struct i40e_vsi *vsi = NULL;
1901 u16 vsi_id = al->vsi_id;
1902 i40e_status ret = 0;
1903 int i;
1904
1905 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1906 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1907 ret = I40E_ERR_PARAM;
1908 goto error_param;
1909 }
1910
1911 for (i = 0; i < al->num_elements; i++) {
1912 ret = i40e_check_vf_permission(vf, al->list[i].addr);
1913 if (ret)
1914 goto error_param;
1915 }
1916 vsi = pf->vsi[vf->lan_vsi_idx];
1917
1918 /* Lock once, because all function inside for loop accesses VSI's
1919 * MAC filter list which needs to be protected using same lock.
1920 */
1921 spin_lock_bh(&vsi->mac_filter_list_lock);
1922
1923 /* add new addresses to the list */
1924 for (i = 0; i < al->num_elements; i++) {
1925 struct i40e_mac_filter *f;
1926
1927 f = i40e_find_mac(vsi, al->list[i].addr, true, false);
1928 if (!f) {
1929 if (i40e_is_vsi_in_vlan(vsi))
1930 f = i40e_put_mac_in_vlan(vsi, al->list[i].addr,
1931 true, false);
1932 else
1933 f = i40e_add_filter(vsi, al->list[i].addr, -1,
1934 true, false);
1935 }
1936
1937 if (!f) {
1938 dev_err(&pf->pdev->dev,
1939 "Unable to add MAC filter %pM for VF %d\n",
1940 al->list[i].addr, vf->vf_id);
1941 ret = I40E_ERR_PARAM;
1942 spin_unlock_bh(&vsi->mac_filter_list_lock);
1943 goto error_param;
1944 } else {
1945 vf->num_mac++;
1946 }
1947 }
1948 spin_unlock_bh(&vsi->mac_filter_list_lock);
1949
1950 /* program the updated filter list */
1951 ret = i40e_sync_vsi_filters(vsi);
1952 if (ret)
1953 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
1954 vf->vf_id, ret);
1955
1956 error_param:
1957 /* send the response to the VF */
1958 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
1959 ret);
1960 }
1961
1962 /**
1963 * i40e_vc_del_mac_addr_msg
1964 * @vf: pointer to the VF info
1965 * @msg: pointer to the msg buffer
1966 * @msglen: msg length
1967 *
1968 * remove guest mac address filter
1969 **/
1970 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1971 {
1972 struct i40e_virtchnl_ether_addr_list *al =
1973 (struct i40e_virtchnl_ether_addr_list *)msg;
1974 struct i40e_pf *pf = vf->pf;
1975 struct i40e_vsi *vsi = NULL;
1976 u16 vsi_id = al->vsi_id;
1977 i40e_status ret = 0;
1978 int i;
1979
1980 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1981 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1982 ret = I40E_ERR_PARAM;
1983 goto error_param;
1984 }
1985
1986 for (i = 0; i < al->num_elements; i++) {
1987 if (is_broadcast_ether_addr(al->list[i].addr) ||
1988 is_zero_ether_addr(al->list[i].addr)) {
1989 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
1990 al->list[i].addr, vf->vf_id);
1991 ret = I40E_ERR_INVALID_MAC_ADDR;
1992 goto error_param;
1993 }
1994 }
1995 vsi = pf->vsi[vf->lan_vsi_idx];
1996
1997 spin_lock_bh(&vsi->mac_filter_list_lock);
1998 /* delete addresses from the list */
1999 for (i = 0; i < al->num_elements; i++)
2000 if (i40e_del_mac_all_vlan(vsi, al->list[i].addr, true, false)) {
2001 ret = I40E_ERR_INVALID_MAC_ADDR;
2002 spin_unlock_bh(&vsi->mac_filter_list_lock);
2003 goto error_param;
2004 } else {
2005 vf->num_mac--;
2006 }
2007
2008 spin_unlock_bh(&vsi->mac_filter_list_lock);
2009
2010 /* program the updated filter list */
2011 ret = i40e_sync_vsi_filters(vsi);
2012 if (ret)
2013 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2014 vf->vf_id, ret);
2015
2016 error_param:
2017 /* send the response to the VF */
2018 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
2019 ret);
2020 }
2021
2022 /**
2023 * i40e_vc_add_vlan_msg
2024 * @vf: pointer to the VF info
2025 * @msg: pointer to the msg buffer
2026 * @msglen: msg length
2027 *
2028 * program guest vlan id
2029 **/
2030 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2031 {
2032 struct i40e_virtchnl_vlan_filter_list *vfl =
2033 (struct i40e_virtchnl_vlan_filter_list *)msg;
2034 struct i40e_pf *pf = vf->pf;
2035 struct i40e_vsi *vsi = NULL;
2036 u16 vsi_id = vfl->vsi_id;
2037 i40e_status aq_ret = 0;
2038 int i;
2039
2040 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
2041 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2042 dev_err(&pf->pdev->dev,
2043 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
2044 goto error_param;
2045 }
2046 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
2047 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2048 aq_ret = I40E_ERR_PARAM;
2049 goto error_param;
2050 }
2051
2052 for (i = 0; i < vfl->num_elements; i++) {
2053 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
2054 aq_ret = I40E_ERR_PARAM;
2055 dev_err(&pf->pdev->dev,
2056 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
2057 goto error_param;
2058 }
2059 }
2060 vsi = pf->vsi[vf->lan_vsi_idx];
2061 if (vsi->info.pvid) {
2062 aq_ret = I40E_ERR_PARAM;
2063 goto error_param;
2064 }
2065
2066 i40e_vlan_stripping_enable(vsi);
2067 for (i = 0; i < vfl->num_elements; i++) {
2068 /* add new VLAN filter */
2069 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
2070 if (!ret)
2071 vf->num_vlan++;
2072
2073 if (test_bit(I40E_VF_STAT_UC_PROMISC, &vf->vf_states))
2074 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
2075 true,
2076 vfl->vlan_id[i],
2077 NULL);
2078 if (test_bit(I40E_VF_STAT_MC_PROMISC, &vf->vf_states))
2079 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
2080 true,
2081 vfl->vlan_id[i],
2082 NULL);
2083
2084 if (ret)
2085 dev_err(&pf->pdev->dev,
2086 "Unable to add VLAN filter %d for VF %d, error %d\n",
2087 vfl->vlan_id[i], vf->vf_id, ret);
2088 }
2089
2090 error_param:
2091 /* send the response to the VF */
2092 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_VLAN, aq_ret);
2093 }
2094
2095 /**
2096 * i40e_vc_remove_vlan_msg
2097 * @vf: pointer to the VF info
2098 * @msg: pointer to the msg buffer
2099 * @msglen: msg length
2100 *
2101 * remove programmed guest vlan id
2102 **/
2103 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2104 {
2105 struct i40e_virtchnl_vlan_filter_list *vfl =
2106 (struct i40e_virtchnl_vlan_filter_list *)msg;
2107 struct i40e_pf *pf = vf->pf;
2108 struct i40e_vsi *vsi = NULL;
2109 u16 vsi_id = vfl->vsi_id;
2110 i40e_status aq_ret = 0;
2111 int i;
2112
2113 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
2114 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
2115 aq_ret = I40E_ERR_PARAM;
2116 goto error_param;
2117 }
2118
2119 for (i = 0; i < vfl->num_elements; i++) {
2120 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
2121 aq_ret = I40E_ERR_PARAM;
2122 goto error_param;
2123 }
2124 }
2125
2126 vsi = pf->vsi[vf->lan_vsi_idx];
2127 if (vsi->info.pvid) {
2128 aq_ret = I40E_ERR_PARAM;
2129 goto error_param;
2130 }
2131
2132 for (i = 0; i < vfl->num_elements; i++) {
2133 int ret = i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
2134 if (!ret)
2135 vf->num_vlan--;
2136
2137 if (test_bit(I40E_VF_STAT_UC_PROMISC, &vf->vf_states))
2138 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
2139 false,
2140 vfl->vlan_id[i],
2141 NULL);
2142 if (test_bit(I40E_VF_STAT_MC_PROMISC, &vf->vf_states))
2143 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
2144 false,
2145 vfl->vlan_id[i],
2146 NULL);
2147
2148 if (ret)
2149 dev_err(&pf->pdev->dev,
2150 "Unable to delete VLAN filter %d for VF %d, error %d\n",
2151 vfl->vlan_id[i], vf->vf_id, ret);
2152 }
2153
2154 error_param:
2155 /* send the response to the VF */
2156 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_VLAN, aq_ret);
2157 }
2158
2159 /**
2160 * i40e_vc_iwarp_msg
2161 * @vf: pointer to the VF info
2162 * @msg: pointer to the msg buffer
2163 * @msglen: msg length
2164 *
2165 * called from the VF for the iwarp msgs
2166 **/
2167 static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
2168 {
2169 struct i40e_pf *pf = vf->pf;
2170 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
2171 i40e_status aq_ret = 0;
2172
2173 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
2174 !test_bit(I40E_VF_STAT_IWARPENA, &vf->vf_states)) {
2175 aq_ret = I40E_ERR_PARAM;
2176 goto error_param;
2177 }
2178
2179 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
2180 msg, msglen);
2181
2182 error_param:
2183 /* send the response to the VF */
2184 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_IWARP,
2185 aq_ret);
2186 }
2187
2188 /**
2189 * i40e_vc_iwarp_qvmap_msg
2190 * @vf: pointer to the VF info
2191 * @msg: pointer to the msg buffer
2192 * @msglen: msg length
2193 * @config: config qvmap or release it
2194 *
2195 * called from the VF for the iwarp msgs
2196 **/
2197 static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, u16 msglen,
2198 bool config)
2199 {
2200 struct i40e_virtchnl_iwarp_qvlist_info *qvlist_info =
2201 (struct i40e_virtchnl_iwarp_qvlist_info *)msg;
2202 i40e_status aq_ret = 0;
2203
2204 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
2205 !test_bit(I40E_VF_STAT_IWARPENA, &vf->vf_states)) {
2206 aq_ret = I40E_ERR_PARAM;
2207 goto error_param;
2208 }
2209
2210 if (config) {
2211 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
2212 aq_ret = I40E_ERR_PARAM;
2213 } else {
2214 i40e_release_iwarp_qvlist(vf);
2215 }
2216
2217 error_param:
2218 /* send the response to the VF */
2219 return i40e_vc_send_resp_to_vf(vf,
2220 config ? I40E_VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP :
2221 I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP,
2222 aq_ret);
2223 }
2224
2225 /**
2226 * i40e_vc_config_rss_key
2227 * @vf: pointer to the VF info
2228 * @msg: pointer to the msg buffer
2229 * @msglen: msg length
2230 *
2231 * Configure the VF's RSS key
2232 **/
2233 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg, u16 msglen)
2234 {
2235 struct i40e_virtchnl_rss_key *vrk =
2236 (struct i40e_virtchnl_rss_key *)msg;
2237 struct i40e_pf *pf = vf->pf;
2238 struct i40e_vsi *vsi = NULL;
2239 u16 vsi_id = vrk->vsi_id;
2240 i40e_status aq_ret = 0;
2241
2242 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
2243 !i40e_vc_isvalid_vsi_id(vf, vsi_id) ||
2244 (vrk->key_len != I40E_HKEY_ARRAY_SIZE)) {
2245 aq_ret = I40E_ERR_PARAM;
2246 goto err;
2247 }
2248
2249 vsi = pf->vsi[vf->lan_vsi_idx];
2250 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
2251 err:
2252 /* send the response to the VF */
2253 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_RSS_KEY,
2254 aq_ret);
2255 }
2256
2257 /**
2258 * i40e_vc_config_rss_lut
2259 * @vf: pointer to the VF info
2260 * @msg: pointer to the msg buffer
2261 * @msglen: msg length
2262 *
2263 * Configure the VF's RSS LUT
2264 **/
2265 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg, u16 msglen)
2266 {
2267 struct i40e_virtchnl_rss_lut *vrl =
2268 (struct i40e_virtchnl_rss_lut *)msg;
2269 struct i40e_pf *pf = vf->pf;
2270 struct i40e_vsi *vsi = NULL;
2271 u16 vsi_id = vrl->vsi_id;
2272 i40e_status aq_ret = 0;
2273
2274 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
2275 !i40e_vc_isvalid_vsi_id(vf, vsi_id) ||
2276 (vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE)) {
2277 aq_ret = I40E_ERR_PARAM;
2278 goto err;
2279 }
2280
2281 vsi = pf->vsi[vf->lan_vsi_idx];
2282 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
2283 /* send the response to the VF */
2284 err:
2285 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_RSS_LUT,
2286 aq_ret);
2287 }
2288
2289 /**
2290 * i40e_vc_get_rss_hena
2291 * @vf: pointer to the VF info
2292 * @msg: pointer to the msg buffer
2293 * @msglen: msg length
2294 *
2295 * Return the RSS HENA bits allowed by the hardware
2296 **/
2297 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg, u16 msglen)
2298 {
2299 struct i40e_virtchnl_rss_hena *vrh = NULL;
2300 struct i40e_pf *pf = vf->pf;
2301 i40e_status aq_ret = 0;
2302 int len = 0;
2303
2304 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
2305 aq_ret = I40E_ERR_PARAM;
2306 goto err;
2307 }
2308 len = sizeof(struct i40e_virtchnl_rss_hena);
2309
2310 vrh = kzalloc(len, GFP_KERNEL);
2311 if (!vrh) {
2312 aq_ret = I40E_ERR_NO_MEMORY;
2313 len = 0;
2314 goto err;
2315 }
2316 vrh->hena = i40e_pf_get_default_rss_hena(pf);
2317 err:
2318 /* send the response back to the VF */
2319 aq_ret = i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_RSS_HENA_CAPS,
2320 aq_ret, (u8 *)vrh, len);
2321 kfree(vrh);
2322 return aq_ret;
2323 }
2324
2325 /**
2326 * i40e_vc_set_rss_hena
2327 * @vf: pointer to the VF info
2328 * @msg: pointer to the msg buffer
2329 * @msglen: msg length
2330 *
2331 * Set the RSS HENA bits for the VF
2332 **/
2333 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg, u16 msglen)
2334 {
2335 struct i40e_virtchnl_rss_hena *vrh =
2336 (struct i40e_virtchnl_rss_hena *)msg;
2337 struct i40e_pf *pf = vf->pf;
2338 struct i40e_hw *hw = &pf->hw;
2339 i40e_status aq_ret = 0;
2340
2341 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
2342 aq_ret = I40E_ERR_PARAM;
2343 goto err;
2344 }
2345 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
2346 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
2347 (u32)(vrh->hena >> 32));
2348
2349 /* send the response to the VF */
2350 err:
2351 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_SET_RSS_HENA,
2352 aq_ret);
2353 }
2354
2355 /**
2356 * i40e_vc_validate_vf_msg
2357 * @vf: pointer to the VF info
2358 * @msg: pointer to the msg buffer
2359 * @msglen: msg length
2360 * @msghndl: msg handle
2361 *
2362 * validate msg
2363 **/
2364 static int i40e_vc_validate_vf_msg(struct i40e_vf *vf, u32 v_opcode,
2365 u32 v_retval, u8 *msg, u16 msglen)
2366 {
2367 bool err_msg_format = false;
2368 int valid_len = 0;
2369
2370 /* Check if VF is disabled. */
2371 if (test_bit(I40E_VF_STAT_DISABLED, &vf->vf_states))
2372 return I40E_ERR_PARAM;
2373
2374 /* Validate message length. */
2375 switch (v_opcode) {
2376 case I40E_VIRTCHNL_OP_VERSION:
2377 valid_len = sizeof(struct i40e_virtchnl_version_info);
2378 break;
2379 case I40E_VIRTCHNL_OP_RESET_VF:
2380 break;
2381 case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
2382 if (VF_IS_V11(vf))
2383 valid_len = sizeof(u32);
2384 break;
2385 case I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE:
2386 valid_len = sizeof(struct i40e_virtchnl_txq_info);
2387 break;
2388 case I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE:
2389 valid_len = sizeof(struct i40e_virtchnl_rxq_info);
2390 break;
2391 case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
2392 valid_len = sizeof(struct i40e_virtchnl_vsi_queue_config_info);
2393 if (msglen >= valid_len) {
2394 struct i40e_virtchnl_vsi_queue_config_info *vqc =
2395 (struct i40e_virtchnl_vsi_queue_config_info *)msg;
2396 valid_len += (vqc->num_queue_pairs *
2397 sizeof(struct
2398 i40e_virtchnl_queue_pair_info));
2399 if (vqc->num_queue_pairs == 0)
2400 err_msg_format = true;
2401 }
2402 break;
2403 case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
2404 valid_len = sizeof(struct i40e_virtchnl_irq_map_info);
2405 if (msglen >= valid_len) {
2406 struct i40e_virtchnl_irq_map_info *vimi =
2407 (struct i40e_virtchnl_irq_map_info *)msg;
2408 valid_len += (vimi->num_vectors *
2409 sizeof(struct i40e_virtchnl_vector_map));
2410 if (vimi->num_vectors == 0)
2411 err_msg_format = true;
2412 }
2413 break;
2414 case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
2415 case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
2416 valid_len = sizeof(struct i40e_virtchnl_queue_select);
2417 break;
2418 case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
2419 case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
2420 valid_len = sizeof(struct i40e_virtchnl_ether_addr_list);
2421 if (msglen >= valid_len) {
2422 struct i40e_virtchnl_ether_addr_list *veal =
2423 (struct i40e_virtchnl_ether_addr_list *)msg;
2424 valid_len += veal->num_elements *
2425 sizeof(struct i40e_virtchnl_ether_addr);
2426 if (veal->num_elements == 0)
2427 err_msg_format = true;
2428 }
2429 break;
2430 case I40E_VIRTCHNL_OP_ADD_VLAN:
2431 case I40E_VIRTCHNL_OP_DEL_VLAN:
2432 valid_len = sizeof(struct i40e_virtchnl_vlan_filter_list);
2433 if (msglen >= valid_len) {
2434 struct i40e_virtchnl_vlan_filter_list *vfl =
2435 (struct i40e_virtchnl_vlan_filter_list *)msg;
2436 valid_len += vfl->num_elements * sizeof(u16);
2437 if (vfl->num_elements == 0)
2438 err_msg_format = true;
2439 }
2440 break;
2441 case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
2442 valid_len = sizeof(struct i40e_virtchnl_promisc_info);
2443 break;
2444 case I40E_VIRTCHNL_OP_GET_STATS:
2445 valid_len = sizeof(struct i40e_virtchnl_queue_select);
2446 break;
2447 case I40E_VIRTCHNL_OP_IWARP:
2448 /* These messages are opaque to us and will be validated in
2449 * the RDMA client code. We just need to check for nonzero
2450 * length. The firmware will enforce max length restrictions.
2451 */
2452 if (msglen)
2453 valid_len = msglen;
2454 else
2455 err_msg_format = true;
2456 break;
2457 case I40E_VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
2458 valid_len = 0;
2459 break;
2460 case I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
2461 valid_len = sizeof(struct i40e_virtchnl_iwarp_qvlist_info);
2462 if (msglen >= valid_len) {
2463 struct i40e_virtchnl_iwarp_qvlist_info *qv =
2464 (struct i40e_virtchnl_iwarp_qvlist_info *)msg;
2465 if (qv->num_vectors == 0) {
2466 err_msg_format = true;
2467 break;
2468 }
2469 valid_len += ((qv->num_vectors - 1) *
2470 sizeof(struct i40e_virtchnl_iwarp_qv_info));
2471 }
2472 break;
2473 case I40E_VIRTCHNL_OP_CONFIG_RSS_KEY:
2474 valid_len = sizeof(struct i40e_virtchnl_rss_key);
2475 if (msglen >= valid_len) {
2476 struct i40e_virtchnl_rss_key *vrk =
2477 (struct i40e_virtchnl_rss_key *)msg;
2478 if (vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
2479 err_msg_format = true;
2480 break;
2481 }
2482 valid_len += vrk->key_len - 1;
2483 }
2484 break;
2485 case I40E_VIRTCHNL_OP_CONFIG_RSS_LUT:
2486 valid_len = sizeof(struct i40e_virtchnl_rss_lut);
2487 if (msglen >= valid_len) {
2488 struct i40e_virtchnl_rss_lut *vrl =
2489 (struct i40e_virtchnl_rss_lut *)msg;
2490 if (vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
2491 err_msg_format = true;
2492 break;
2493 }
2494 valid_len += vrl->lut_entries - 1;
2495 }
2496 break;
2497 case I40E_VIRTCHNL_OP_GET_RSS_HENA_CAPS:
2498 break;
2499 case I40E_VIRTCHNL_OP_SET_RSS_HENA:
2500 valid_len = sizeof(struct i40e_virtchnl_rss_hena);
2501 break;
2502 /* These are always errors coming from the VF. */
2503 case I40E_VIRTCHNL_OP_EVENT:
2504 case I40E_VIRTCHNL_OP_UNKNOWN:
2505 default:
2506 return -EPERM;
2507 }
2508 /* few more checks */
2509 if ((valid_len != msglen) || (err_msg_format)) {
2510 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
2511 return -EINVAL;
2512 } else {
2513 return 0;
2514 }
2515 }
2516
2517 /**
2518 * i40e_vc_process_vf_msg
2519 * @pf: pointer to the PF structure
2520 * @vf_id: source VF id
2521 * @msg: pointer to the msg buffer
2522 * @msglen: msg length
2523 * @msghndl: msg handle
2524 *
2525 * called from the common aeq/arq handler to
2526 * process request from VF
2527 **/
2528 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
2529 u32 v_retval, u8 *msg, u16 msglen)
2530 {
2531 struct i40e_hw *hw = &pf->hw;
2532 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
2533 struct i40e_vf *vf;
2534 int ret;
2535
2536 pf->vf_aq_requests++;
2537 if (local_vf_id >= pf->num_alloc_vfs)
2538 return -EINVAL;
2539 vf = &(pf->vf[local_vf_id]);
2540 /* perform basic checks on the msg */
2541 ret = i40e_vc_validate_vf_msg(vf, v_opcode, v_retval, msg, msglen);
2542
2543 if (ret) {
2544 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
2545 local_vf_id, v_opcode, msglen);
2546 return ret;
2547 }
2548
2549 switch (v_opcode) {
2550 case I40E_VIRTCHNL_OP_VERSION:
2551 ret = i40e_vc_get_version_msg(vf, msg);
2552 break;
2553 case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
2554 ret = i40e_vc_get_vf_resources_msg(vf, msg);
2555 break;
2556 case I40E_VIRTCHNL_OP_RESET_VF:
2557 i40e_vc_reset_vf_msg(vf);
2558 ret = 0;
2559 break;
2560 case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
2561 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen);
2562 break;
2563 case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
2564 ret = i40e_vc_config_queues_msg(vf, msg, msglen);
2565 break;
2566 case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
2567 ret = i40e_vc_config_irq_map_msg(vf, msg, msglen);
2568 break;
2569 case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
2570 ret = i40e_vc_enable_queues_msg(vf, msg, msglen);
2571 i40e_vc_notify_vf_link_state(vf);
2572 break;
2573 case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
2574 ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
2575 break;
2576 case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
2577 ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen);
2578 break;
2579 case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
2580 ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen);
2581 break;
2582 case I40E_VIRTCHNL_OP_ADD_VLAN:
2583 ret = i40e_vc_add_vlan_msg(vf, msg, msglen);
2584 break;
2585 case I40E_VIRTCHNL_OP_DEL_VLAN:
2586 ret = i40e_vc_remove_vlan_msg(vf, msg, msglen);
2587 break;
2588 case I40E_VIRTCHNL_OP_GET_STATS:
2589 ret = i40e_vc_get_stats_msg(vf, msg, msglen);
2590 break;
2591 case I40E_VIRTCHNL_OP_IWARP:
2592 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
2593 break;
2594 case I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
2595 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, true);
2596 break;
2597 case I40E_VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
2598 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, false);
2599 break;
2600 case I40E_VIRTCHNL_OP_CONFIG_RSS_KEY:
2601 ret = i40e_vc_config_rss_key(vf, msg, msglen);
2602 break;
2603 case I40E_VIRTCHNL_OP_CONFIG_RSS_LUT:
2604 ret = i40e_vc_config_rss_lut(vf, msg, msglen);
2605 break;
2606 case I40E_VIRTCHNL_OP_GET_RSS_HENA_CAPS:
2607 ret = i40e_vc_get_rss_hena(vf, msg, msglen);
2608 break;
2609 case I40E_VIRTCHNL_OP_SET_RSS_HENA:
2610 ret = i40e_vc_set_rss_hena(vf, msg, msglen);
2611 break;
2612
2613 case I40E_VIRTCHNL_OP_UNKNOWN:
2614 default:
2615 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
2616 v_opcode, local_vf_id);
2617 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
2618 I40E_ERR_NOT_IMPLEMENTED);
2619 break;
2620 }
2621
2622 return ret;
2623 }
2624
2625 /**
2626 * i40e_vc_process_vflr_event
2627 * @pf: pointer to the PF structure
2628 *
2629 * called from the vlfr irq handler to
2630 * free up VF resources and state variables
2631 **/
2632 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
2633 {
2634 struct i40e_hw *hw = &pf->hw;
2635 u32 reg, reg_idx, bit_idx;
2636 struct i40e_vf *vf;
2637 int vf_id;
2638
2639 if (!test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
2640 return 0;
2641
2642 /* Re-enable the VFLR interrupt cause here, before looking for which
2643 * VF got reset. Otherwise, if another VF gets a reset while the
2644 * first one is being processed, that interrupt will be lost, and
2645 * that VF will be stuck in reset forever.
2646 */
2647 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
2648 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
2649 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
2650 i40e_flush(hw);
2651
2652 clear_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2653 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
2654 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
2655 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
2656 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
2657 vf = &pf->vf[vf_id];
2658 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
2659 if (reg & BIT(bit_idx))
2660 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
2661 i40e_reset_vf(vf, true);
2662 }
2663
2664 return 0;
2665 }
2666
2667 /**
2668 * i40e_ndo_set_vf_mac
2669 * @netdev: network interface device structure
2670 * @vf_id: VF identifier
2671 * @mac: mac address
2672 *
2673 * program VF mac address
2674 **/
2675 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
2676 {
2677 struct i40e_netdev_priv *np = netdev_priv(netdev);
2678 struct i40e_vsi *vsi = np->vsi;
2679 struct i40e_pf *pf = vsi->back;
2680 struct i40e_mac_filter *f;
2681 struct i40e_vf *vf;
2682 int ret = 0;
2683
2684 /* validate the request */
2685 if (vf_id >= pf->num_alloc_vfs) {
2686 dev_err(&pf->pdev->dev,
2687 "Invalid VF Identifier %d\n", vf_id);
2688 ret = -EINVAL;
2689 goto error_param;
2690 }
2691
2692 vf = &(pf->vf[vf_id]);
2693 vsi = pf->vsi[vf->lan_vsi_idx];
2694 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2695 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2696 vf_id);
2697 ret = -EAGAIN;
2698 goto error_param;
2699 }
2700
2701 if (is_multicast_ether_addr(mac)) {
2702 dev_err(&pf->pdev->dev,
2703 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
2704 ret = -EINVAL;
2705 goto error_param;
2706 }
2707
2708 /* Lock once because below invoked function add/del_filter requires
2709 * mac_filter_list_lock to be held
2710 */
2711 spin_lock_bh(&vsi->mac_filter_list_lock);
2712
2713 /* delete the temporary mac address */
2714 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
2715 i40e_del_filter(vsi, vf->default_lan_addr.addr,
2716 vf->port_vlan_id ? vf->port_vlan_id : -1,
2717 true, false);
2718
2719 /* Delete all the filters for this VSI - we're going to kill it
2720 * anyway.
2721 */
2722 list_for_each_entry(f, &vsi->mac_filter_list, list)
2723 i40e_del_filter(vsi, f->macaddr, f->vlan, true, false);
2724
2725 spin_unlock_bh(&vsi->mac_filter_list_lock);
2726
2727 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", mac, vf_id);
2728 /* program mac filter */
2729 if (i40e_sync_vsi_filters(vsi)) {
2730 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
2731 ret = -EIO;
2732 goto error_param;
2733 }
2734 ether_addr_copy(vf->default_lan_addr.addr, mac);
2735 vf->pf_set_mac = true;
2736 /* Force the VF driver stop so it has to reload with new MAC address */
2737 i40e_vc_disable_vf(pf, vf);
2738 dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");
2739
2740 error_param:
2741 return ret;
2742 }
2743
2744 /**
2745 * i40e_ndo_set_vf_port_vlan
2746 * @netdev: network interface device structure
2747 * @vf_id: VF identifier
2748 * @vlan_id: mac address
2749 * @qos: priority setting
2750 *
2751 * program VF vlan id and/or qos
2752 **/
2753 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev,
2754 int vf_id, u16 vlan_id, u8 qos)
2755 {
2756 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
2757 struct i40e_netdev_priv *np = netdev_priv(netdev);
2758 struct i40e_pf *pf = np->vsi->back;
2759 bool is_vsi_in_vlan = false;
2760 struct i40e_vsi *vsi;
2761 struct i40e_vf *vf;
2762 int ret = 0;
2763
2764 /* validate the request */
2765 if (vf_id >= pf->num_alloc_vfs) {
2766 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2767 ret = -EINVAL;
2768 goto error_pvid;
2769 }
2770
2771 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
2772 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
2773 ret = -EINVAL;
2774 goto error_pvid;
2775 }
2776
2777 vf = &(pf->vf[vf_id]);
2778 vsi = pf->vsi[vf->lan_vsi_idx];
2779 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2780 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2781 vf_id);
2782 ret = -EAGAIN;
2783 goto error_pvid;
2784 }
2785
2786 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
2787 /* duplicate request, so just return success */
2788 goto error_pvid;
2789
2790 spin_lock_bh(&vsi->mac_filter_list_lock);
2791 is_vsi_in_vlan = i40e_is_vsi_in_vlan(vsi);
2792 spin_unlock_bh(&vsi->mac_filter_list_lock);
2793
2794 if (le16_to_cpu(vsi->info.pvid) == 0 && is_vsi_in_vlan) {
2795 dev_err(&pf->pdev->dev,
2796 "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",
2797 vf_id);
2798 /* Administrator Error - knock the VF offline until he does
2799 * the right thing by reconfiguring his network correctly
2800 * and then reloading the VF driver.
2801 */
2802 i40e_vc_disable_vf(pf, vf);
2803 /* During reset the VF got a new VSI, so refresh the pointer. */
2804 vsi = pf->vsi[vf->lan_vsi_idx];
2805 }
2806
2807 /* Check for condition where there was already a port VLAN ID
2808 * filter set and now it is being deleted by setting it to zero.
2809 * Additionally check for the condition where there was a port
2810 * VLAN but now there is a new and different port VLAN being set.
2811 * Before deleting all the old VLAN filters we must add new ones
2812 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
2813 * MAC addresses deleted.
2814 */
2815 if ((!(vlan_id || qos) ||
2816 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
2817 vsi->info.pvid)
2818 ret = i40e_vsi_add_vlan(vsi, I40E_VLAN_ANY);
2819
2820 if (vsi->info.pvid) {
2821 /* kill old VLAN */
2822 ret = i40e_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) &
2823 VLAN_VID_MASK));
2824 if (ret) {
2825 dev_info(&vsi->back->pdev->dev,
2826 "remove VLAN failed, ret=%d, aq_err=%d\n",
2827 ret, pf->hw.aq.asq_last_status);
2828 }
2829 }
2830 if (vlan_id || qos)
2831 ret = i40e_vsi_add_pvid(vsi, vlanprio);
2832 else
2833 i40e_vsi_remove_pvid(vsi);
2834
2835 if (vlan_id) {
2836 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
2837 vlan_id, qos, vf_id);
2838
2839 /* add new VLAN filter */
2840 ret = i40e_vsi_add_vlan(vsi, vlan_id);
2841 if (ret) {
2842 dev_info(&vsi->back->pdev->dev,
2843 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
2844 vsi->back->hw.aq.asq_last_status);
2845 goto error_pvid;
2846 }
2847 /* Kill non-vlan MAC filters - ignore error return since
2848 * there might not be any non-vlan MAC filters.
2849 */
2850 i40e_vsi_kill_vlan(vsi, I40E_VLAN_ANY);
2851 }
2852
2853 if (ret) {
2854 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
2855 goto error_pvid;
2856 }
2857 /* The Port VLAN needs to be saved across resets the same as the
2858 * default LAN MAC address.
2859 */
2860 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
2861 ret = 0;
2862
2863 error_pvid:
2864 return ret;
2865 }
2866
2867 #define I40E_BW_CREDIT_DIVISOR 50 /* 50Mbps per BW credit */
2868 #define I40E_MAX_BW_INACTIVE_ACCUM 4 /* device can accumulate 4 credits max */
2869 /**
2870 * i40e_ndo_set_vf_bw
2871 * @netdev: network interface device structure
2872 * @vf_id: VF identifier
2873 * @tx_rate: Tx rate
2874 *
2875 * configure VF Tx rate
2876 **/
2877 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
2878 int max_tx_rate)
2879 {
2880 struct i40e_netdev_priv *np = netdev_priv(netdev);
2881 struct i40e_pf *pf = np->vsi->back;
2882 struct i40e_vsi *vsi;
2883 struct i40e_vf *vf;
2884 int speed = 0;
2885 int ret = 0;
2886
2887 /* validate the request */
2888 if (vf_id >= pf->num_alloc_vfs) {
2889 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d.\n", vf_id);
2890 ret = -EINVAL;
2891 goto error;
2892 }
2893
2894 if (min_tx_rate) {
2895 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
2896 min_tx_rate, vf_id);
2897 return -EINVAL;
2898 }
2899
2900 vf = &(pf->vf[vf_id]);
2901 vsi = pf->vsi[vf->lan_vsi_idx];
2902 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2903 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2904 vf_id);
2905 ret = -EAGAIN;
2906 goto error;
2907 }
2908
2909 switch (pf->hw.phy.link_info.link_speed) {
2910 case I40E_LINK_SPEED_40GB:
2911 speed = 40000;
2912 break;
2913 case I40E_LINK_SPEED_20GB:
2914 speed = 20000;
2915 break;
2916 case I40E_LINK_SPEED_10GB:
2917 speed = 10000;
2918 break;
2919 case I40E_LINK_SPEED_1GB:
2920 speed = 1000;
2921 break;
2922 default:
2923 break;
2924 }
2925
2926 if (max_tx_rate > speed) {
2927 dev_err(&pf->pdev->dev, "Invalid max tx rate %d specified for VF %d.",
2928 max_tx_rate, vf->vf_id);
2929 ret = -EINVAL;
2930 goto error;
2931 }
2932
2933 if ((max_tx_rate < 50) && (max_tx_rate > 0)) {
2934 dev_warn(&pf->pdev->dev, "Setting max Tx rate to minimum usable value of 50Mbps.\n");
2935 max_tx_rate = 50;
2936 }
2937
2938 /* Tx rate credits are in values of 50Mbps, 0 is disabled*/
2939 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
2940 max_tx_rate / I40E_BW_CREDIT_DIVISOR,
2941 I40E_MAX_BW_INACTIVE_ACCUM, NULL);
2942 if (ret) {
2943 dev_err(&pf->pdev->dev, "Unable to set max tx rate, error code %d.\n",
2944 ret);
2945 ret = -EIO;
2946 goto error;
2947 }
2948 vf->tx_rate = max_tx_rate;
2949 error:
2950 return ret;
2951 }
2952
2953 /**
2954 * i40e_ndo_get_vf_config
2955 * @netdev: network interface device structure
2956 * @vf_id: VF identifier
2957 * @ivi: VF configuration structure
2958 *
2959 * return VF configuration
2960 **/
2961 int i40e_ndo_get_vf_config(struct net_device *netdev,
2962 int vf_id, struct ifla_vf_info *ivi)
2963 {
2964 struct i40e_netdev_priv *np = netdev_priv(netdev);
2965 struct i40e_vsi *vsi = np->vsi;
2966 struct i40e_pf *pf = vsi->back;
2967 struct i40e_vf *vf;
2968 int ret = 0;
2969
2970 /* validate the request */
2971 if (vf_id >= pf->num_alloc_vfs) {
2972 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2973 ret = -EINVAL;
2974 goto error_param;
2975 }
2976
2977 vf = &(pf->vf[vf_id]);
2978 /* first vsi is always the LAN vsi */
2979 vsi = pf->vsi[vf->lan_vsi_idx];
2980 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2981 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2982 vf_id);
2983 ret = -EAGAIN;
2984 goto error_param;
2985 }
2986
2987 ivi->vf = vf_id;
2988
2989 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
2990
2991 ivi->max_tx_rate = vf->tx_rate;
2992 ivi->min_tx_rate = 0;
2993 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
2994 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
2995 I40E_VLAN_PRIORITY_SHIFT;
2996 if (vf->link_forced == false)
2997 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
2998 else if (vf->link_up == true)
2999 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
3000 else
3001 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
3002 ivi->spoofchk = vf->spoofchk;
3003 ivi->trusted = vf->trusted;
3004 ret = 0;
3005
3006 error_param:
3007 return ret;
3008 }
3009
3010 /**
3011 * i40e_ndo_set_vf_link_state
3012 * @netdev: network interface device structure
3013 * @vf_id: VF identifier
3014 * @link: required link state
3015 *
3016 * Set the link state of a specified VF, regardless of physical link state
3017 **/
3018 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
3019 {
3020 struct i40e_netdev_priv *np = netdev_priv(netdev);
3021 struct i40e_pf *pf = np->vsi->back;
3022 struct i40e_virtchnl_pf_event pfe;
3023 struct i40e_hw *hw = &pf->hw;
3024 struct i40e_vf *vf;
3025 int abs_vf_id;
3026 int ret = 0;
3027
3028 /* validate the request */
3029 if (vf_id >= pf->num_alloc_vfs) {
3030 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
3031 ret = -EINVAL;
3032 goto error_out;
3033 }
3034
3035 vf = &pf->vf[vf_id];
3036 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
3037
3038 pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
3039 pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
3040
3041 switch (link) {
3042 case IFLA_VF_LINK_STATE_AUTO:
3043 vf->link_forced = false;
3044 pfe.event_data.link_event.link_status =
3045 pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
3046 pfe.event_data.link_event.link_speed =
3047 pf->hw.phy.link_info.link_speed;
3048 break;
3049 case IFLA_VF_LINK_STATE_ENABLE:
3050 vf->link_forced = true;
3051 vf->link_up = true;
3052 pfe.event_data.link_event.link_status = true;
3053 pfe.event_data.link_event.link_speed = I40E_LINK_SPEED_40GB;
3054 break;
3055 case IFLA_VF_LINK_STATE_DISABLE:
3056 vf->link_forced = true;
3057 vf->link_up = false;
3058 pfe.event_data.link_event.link_status = false;
3059 pfe.event_data.link_event.link_speed = 0;
3060 break;
3061 default:
3062 ret = -EINVAL;
3063 goto error_out;
3064 }
3065 /* Notify the VF of its new link state */
3066 i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
3067 0, (u8 *)&pfe, sizeof(pfe), NULL);
3068
3069 error_out:
3070 return ret;
3071 }
3072
3073 /**
3074 * i40e_ndo_set_vf_spoofchk
3075 * @netdev: network interface device structure
3076 * @vf_id: VF identifier
3077 * @enable: flag to enable or disable feature
3078 *
3079 * Enable or disable VF spoof checking
3080 **/
3081 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
3082 {
3083 struct i40e_netdev_priv *np = netdev_priv(netdev);
3084 struct i40e_vsi *vsi = np->vsi;
3085 struct i40e_pf *pf = vsi->back;
3086 struct i40e_vsi_context ctxt;
3087 struct i40e_hw *hw = &pf->hw;
3088 struct i40e_vf *vf;
3089 int ret = 0;
3090
3091 /* validate the request */
3092 if (vf_id >= pf->num_alloc_vfs) {
3093 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
3094 ret = -EINVAL;
3095 goto out;
3096 }
3097
3098 vf = &(pf->vf[vf_id]);
3099 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
3100 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
3101 vf_id);
3102 ret = -EAGAIN;
3103 goto out;
3104 }
3105
3106 if (enable == vf->spoofchk)
3107 goto out;
3108
3109 vf->spoofchk = enable;
3110 memset(&ctxt, 0, sizeof(ctxt));
3111 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
3112 ctxt.pf_num = pf->hw.pf_id;
3113 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
3114 if (enable)
3115 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
3116 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
3117 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
3118 if (ret) {
3119 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
3120 ret);
3121 ret = -EIO;
3122 }
3123 out:
3124 return ret;
3125 }
3126
3127 /**
3128 * i40e_ndo_set_vf_trust
3129 * @netdev: network interface device structure of the pf
3130 * @vf_id: VF identifier
3131 * @setting: trust setting
3132 *
3133 * Enable or disable VF trust setting
3134 **/
3135 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
3136 {
3137 struct i40e_netdev_priv *np = netdev_priv(netdev);
3138 struct i40e_pf *pf = np->vsi->back;
3139 struct i40e_vf *vf;
3140 int ret = 0;
3141
3142 /* validate the request */
3143 if (vf_id >= pf->num_alloc_vfs) {
3144 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
3145 return -EINVAL;
3146 }
3147
3148 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3149 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
3150 return -EINVAL;
3151 }
3152
3153 vf = &pf->vf[vf_id];
3154
3155 if (!vf)
3156 return -EINVAL;
3157 if (setting == vf->trusted)
3158 goto out;
3159
3160 vf->trusted = setting;
3161 i40e_vc_notify_vf_reset(vf);
3162 i40e_reset_vf(vf, false);
3163 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
3164 vf_id, setting ? "" : "un");
3165 out:
3166 return ret;
3167 }
Linux kernel - Deliverables
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