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