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1/*******************************************************************************
2 *
3 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
4 * Copyright(c) 2013 - 2014 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 * The full GNU General Public License is included in this distribution in
16 * the file called "COPYING".
17 *
18 * Contact Information:
19 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
20 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
21 *
22 ******************************************************************************/
23
24#include "i40evf.h"
25#include "i40e_prototype.h"
26
27/* busy wait delay in msec */
28#define I40EVF_BUSY_WAIT_DELAY 10
29#define I40EVF_BUSY_WAIT_COUNT 50
30
31/**
32 * i40evf_send_pf_msg
33 * @adapter: adapter structure
34 * @op: virtual channel opcode
35 * @msg: pointer to message buffer
36 * @len: message length
37 *
38 * Send message to PF and print status if failure.
39 **/
40static int i40evf_send_pf_msg(struct i40evf_adapter *adapter,
41 enum i40e_virtchnl_ops op, u8 *msg, u16 len)
42{
43 struct i40e_hw *hw = &adapter->hw;
44 i40e_status err;
45
46 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
47 return 0; /* nothing to see here, move along */
48
49 err = i40e_aq_send_msg_to_pf(hw, op, 0, msg, len, NULL);
50 if (err)
51 dev_err(&adapter->pdev->dev, "Unable to send opcode %d to PF, error %d, aq status %d\n",
52 op, err, hw->aq.asq_last_status);
53 return err;
54}
55
56/**
57 * i40evf_send_api_ver
58 * @adapter: adapter structure
59 *
60 * Send API version admin queue message to the PF. The reply is not checked
61 * in this function. Returns 0 if the message was successfully
62 * sent, or one of the I40E_ADMIN_QUEUE_ERROR_ statuses if not.
63 **/
64int i40evf_send_api_ver(struct i40evf_adapter *adapter)
65{
66 struct i40e_virtchnl_version_info vvi;
67
68 vvi.major = I40E_VIRTCHNL_VERSION_MAJOR;
69 vvi.minor = I40E_VIRTCHNL_VERSION_MINOR;
70
71 return i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_VERSION, (u8 *)&vvi,
72 sizeof(vvi));
73}
74
75/**
76 * i40evf_verify_api_ver
77 * @adapter: adapter structure
78 *
79 * Compare API versions with the PF. Must be called after admin queue is
80 * initialized. Returns 0 if API versions match, -EIO if
81 * they do not, or I40E_ERR_ADMIN_QUEUE_NO_WORK if the admin queue is empty.
82 **/
83int i40evf_verify_api_ver(struct i40evf_adapter *adapter)
84{
85 struct i40e_virtchnl_version_info *pf_vvi;
86 struct i40e_hw *hw = &adapter->hw;
87 struct i40e_arq_event_info event;
88 i40e_status err;
89
90 event.msg_size = I40EVF_MAX_AQ_BUF_SIZE;
91 event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
92 if (!event.msg_buf) {
93 err = -ENOMEM;
94 goto out;
95 }
96
97 err = i40evf_clean_arq_element(hw, &event, NULL);
98 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK)
99 goto out_alloc;
100
101 err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
102 if (err) {
103 err = -EIO;
104 goto out_alloc;
105 }
106
107 if ((enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high) !=
108 I40E_VIRTCHNL_OP_VERSION) {
109 err = -EIO;
110 goto out_alloc;
111 }
112
113 pf_vvi = (struct i40e_virtchnl_version_info *)event.msg_buf;
114 if ((pf_vvi->major != I40E_VIRTCHNL_VERSION_MAJOR) ||
115 (pf_vvi->minor != I40E_VIRTCHNL_VERSION_MINOR))
116 err = -EIO;
117
118out_alloc:
119 kfree(event.msg_buf);
120out:
121 return err;
122}
123
124/**
125 * i40evf_send_vf_config_msg
126 * @adapter: adapter structure
127 *
128 * Send VF configuration request admin queue message to the PF. The reply
129 * is not checked in this function. Returns 0 if the message was
130 * successfully sent, or one of the I40E_ADMIN_QUEUE_ERROR_ statuses if not.
131 **/
132int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter)
133{
134 return i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
135 NULL, 0);
136}
137
138/**
139 * i40evf_get_vf_config
140 * @hw: pointer to the hardware structure
141 * @len: length of buffer
142 *
143 * Get VF configuration from PF and populate hw structure. Must be called after
144 * admin queue is initialized. Busy waits until response is received from PF,
145 * with maximum timeout. Response from PF is returned in the buffer for further
146 * processing by the caller.
147 **/
148int i40evf_get_vf_config(struct i40evf_adapter *adapter)
149{
150 struct i40e_hw *hw = &adapter->hw;
151 struct i40e_arq_event_info event;
152 u16 len;
153 i40e_status err;
154
155 len = sizeof(struct i40e_virtchnl_vf_resource) +
156 I40E_MAX_VF_VSI * sizeof(struct i40e_virtchnl_vsi_resource);
157 event.msg_size = len;
158 event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
159 if (!event.msg_buf) {
160 err = -ENOMEM;
161 goto out;
162 }
163
164 err = i40evf_clean_arq_element(hw, &event, NULL);
165 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK)
166 goto out_alloc;
167
168 err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
169 if (err) {
170 dev_err(&adapter->pdev->dev,
171 "%s: Error returned from PF, %d, %d\n", __func__,
172 le32_to_cpu(event.desc.cookie_high),
173 le32_to_cpu(event.desc.cookie_low));
174 err = -EIO;
175 goto out_alloc;
176 }
177
178 if ((enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high) !=
179 I40E_VIRTCHNL_OP_GET_VF_RESOURCES) {
180 dev_err(&adapter->pdev->dev,
181 "%s: Invalid response from PF, %d, %d\n", __func__,
182 le32_to_cpu(event.desc.cookie_high),
183 le32_to_cpu(event.desc.cookie_low));
184 err = -EIO;
185 goto out_alloc;
186 }
187 memcpy(adapter->vf_res, event.msg_buf, min(event.msg_size, len));
188
189 i40e_vf_parse_hw_config(hw, adapter->vf_res);
190out_alloc:
191 kfree(event.msg_buf);
192out:
193 return err;
194}
195
196/**
197 * i40evf_configure_queues
198 * @adapter: adapter structure
199 *
200 * Request that the PF set up our (previously allocated) queues.
201 **/
202void i40evf_configure_queues(struct i40evf_adapter *adapter)
203{
204 struct i40e_virtchnl_vsi_queue_config_info *vqci;
205 struct i40e_virtchnl_queue_pair_info *vqpi;
206 int pairs = adapter->vsi_res->num_queue_pairs;
207 int i, len;
208
209 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
210 /* bail because we already have a command pending */
211 dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
212 __func__, adapter->current_op);
213 return;
214 }
215 adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES;
216 len = sizeof(struct i40e_virtchnl_vsi_queue_config_info) +
217 (sizeof(struct i40e_virtchnl_queue_pair_info) * pairs);
218 vqci = kzalloc(len, GFP_ATOMIC);
219 if (!vqci) {
220 dev_err(&adapter->pdev->dev, "%s: unable to allocate memory\n",
221 __func__);
222 return;
223 }
224 vqci->vsi_id = adapter->vsi_res->vsi_id;
225 vqci->num_queue_pairs = pairs;
226 vqpi = vqci->qpair;
227 /* Size check is not needed here - HW max is 16 queue pairs, and we
228 * can fit info for 31 of them into the AQ buffer before it overflows.
229 */
230 for (i = 0; i < pairs; i++) {
231 vqpi->txq.vsi_id = vqci->vsi_id;
232 vqpi->txq.queue_id = i;
233 vqpi->txq.ring_len = adapter->tx_rings[i]->count;
234 vqpi->txq.dma_ring_addr = adapter->tx_rings[i]->dma;
235
236 vqpi->rxq.vsi_id = vqci->vsi_id;
237 vqpi->rxq.queue_id = i;
238 vqpi->rxq.ring_len = adapter->rx_rings[i]->count;
239 vqpi->rxq.dma_ring_addr = adapter->rx_rings[i]->dma;
240 vqpi->rxq.max_pkt_size = adapter->netdev->mtu
241 + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
242 vqpi->rxq.databuffer_size = adapter->rx_rings[i]->rx_buf_len;
243 vqpi++;
244 }
245
246 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
247 (u8 *)vqci, len);
248 kfree(vqci);
249 adapter->aq_pending |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
250 adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
251}
252
253/**
254 * i40evf_enable_queues
255 * @adapter: adapter structure
256 *
257 * Request that the PF enable all of our queues.
258 **/
259void i40evf_enable_queues(struct i40evf_adapter *adapter)
260{
261 struct i40e_virtchnl_queue_select vqs;
262
263 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
264 /* bail because we already have a command pending */
265 dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
266 __func__, adapter->current_op);
267 return;
268 }
269 adapter->current_op = I40E_VIRTCHNL_OP_ENABLE_QUEUES;
270 vqs.vsi_id = adapter->vsi_res->vsi_id;
271 vqs.tx_queues = (1 << adapter->vsi_res->num_queue_pairs) - 1;
272 vqs.rx_queues = vqs.tx_queues;
273 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
274 (u8 *)&vqs, sizeof(vqs));
275 adapter->aq_pending |= I40EVF_FLAG_AQ_ENABLE_QUEUES;
276 adapter->aq_required &= ~I40EVF_FLAG_AQ_ENABLE_QUEUES;
277}
278
279/**
280 * i40evf_disable_queues
281 * @adapter: adapter structure
282 *
283 * Request that the PF disable all of our queues.
284 **/
285void i40evf_disable_queues(struct i40evf_adapter *adapter)
286{
287 struct i40e_virtchnl_queue_select vqs;
288
289 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
290 /* bail because we already have a command pending */
291 dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
292 __func__, adapter->current_op);
293 return;
294 }
295 adapter->current_op = I40E_VIRTCHNL_OP_DISABLE_QUEUES;
296 vqs.vsi_id = adapter->vsi_res->vsi_id;
297 vqs.tx_queues = (1 << adapter->vsi_res->num_queue_pairs) - 1;
298 vqs.rx_queues = vqs.tx_queues;
299 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
300 (u8 *)&vqs, sizeof(vqs));
301 adapter->aq_pending |= I40EVF_FLAG_AQ_DISABLE_QUEUES;
302 adapter->aq_required &= ~I40EVF_FLAG_AQ_DISABLE_QUEUES;
303}
304
305/**
306 * i40evf_map_queues
307 * @adapter: adapter structure
308 *
309 * Request that the PF map queues to interrupt vectors. Misc causes, including
310 * admin queue, are always mapped to vector 0.
311 **/
312void i40evf_map_queues(struct i40evf_adapter *adapter)
313{
314 struct i40e_virtchnl_irq_map_info *vimi;
315 int v_idx, q_vectors, len;
316 struct i40e_q_vector *q_vector;
317
318 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
319 /* bail because we already have a command pending */
320 dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
321 __func__, adapter->current_op);
322 return;
323 }
324 adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP;
325
326 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
327
328 len = sizeof(struct i40e_virtchnl_irq_map_info) +
329 (adapter->num_msix_vectors *
330 sizeof(struct i40e_virtchnl_vector_map));
331 vimi = kzalloc(len, GFP_ATOMIC);
332 if (!vimi) {
333 dev_err(&adapter->pdev->dev, "%s: unable to allocate memory\n",
334 __func__);
335 return;
336 }
337
338 vimi->num_vectors = adapter->num_msix_vectors;
339 /* Queue vectors first */
340 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
341 q_vector = adapter->q_vector[v_idx];
342 vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
343 vimi->vecmap[v_idx].vector_id = v_idx + NONQ_VECS;
344 vimi->vecmap[v_idx].txq_map = q_vector->ring_mask;
345 vimi->vecmap[v_idx].rxq_map = q_vector->ring_mask;
346 }
347 /* Misc vector last - this is only for AdminQ messages */
348 vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
349 vimi->vecmap[v_idx].vector_id = 0;
350 vimi->vecmap[v_idx].txq_map = 0;
351 vimi->vecmap[v_idx].rxq_map = 0;
352
353 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
354 (u8 *)vimi, len);
355 kfree(vimi);
356 adapter->aq_pending |= I40EVF_FLAG_AQ_MAP_VECTORS;
357 adapter->aq_required &= ~I40EVF_FLAG_AQ_MAP_VECTORS;
358}
359
360/**
361 * i40evf_add_ether_addrs
362 * @adapter: adapter structure
363 * @addrs: the MAC address filters to add (contiguous)
364 * @count: number of filters
365 *
366 * Request that the PF add one or more addresses to our filters.
367 **/
368void i40evf_add_ether_addrs(struct i40evf_adapter *adapter)
369{
370 struct i40e_virtchnl_ether_addr_list *veal;
371 int len, i = 0, count = 0;
372 struct i40evf_mac_filter *f;
373
374 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
375 /* bail because we already have a command pending */
376 dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
377 __func__, adapter->current_op);
378 return;
379 }
380 list_for_each_entry(f, &adapter->mac_filter_list, list) {
381 if (f->add)
382 count++;
383 }
384 if (!count) {
385 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER;
386 return;
387 }
388 adapter->current_op = I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS;
389
390 len = sizeof(struct i40e_virtchnl_ether_addr_list) +
391 (count * sizeof(struct i40e_virtchnl_ether_addr));
392 if (len > I40EVF_MAX_AQ_BUF_SIZE) {
393 dev_warn(&adapter->pdev->dev, "%s: Too many MAC address changes in one request.\n",
394 __func__);
395 count = (I40EVF_MAX_AQ_BUF_SIZE -
396 sizeof(struct i40e_virtchnl_ether_addr_list)) /
397 sizeof(struct i40e_virtchnl_ether_addr);
398 len = I40EVF_MAX_AQ_BUF_SIZE;
399 }
400
401 veal = kzalloc(len, GFP_ATOMIC);
402 if (!veal) {
403 dev_err(&adapter->pdev->dev, "%s: unable to allocate memory\n",
404 __func__);
405 return;
406 }
407 veal->vsi_id = adapter->vsi_res->vsi_id;
408 veal->num_elements = count;
409 list_for_each_entry(f, &adapter->mac_filter_list, list) {
410 if (f->add) {
411 memcpy(veal->list[i].addr, f->macaddr, ETH_ALEN);
412 i++;
413 f->add = false;
414 }
415 }
416 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
417 (u8 *)veal, len);
418 kfree(veal);
419 adapter->aq_pending |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
420 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER;
421
422}
423
424/**
425 * i40evf_del_ether_addrs
426 * @adapter: adapter structure
427 * @addrs: the MAC address filters to remove (contiguous)
428 * @count: number of filtes
429 *
430 * Request that the PF remove one or more addresses from our filters.
431 **/
432void i40evf_del_ether_addrs(struct i40evf_adapter *adapter)
433{
434 struct i40e_virtchnl_ether_addr_list *veal;
435 struct i40evf_mac_filter *f, *ftmp;
436 int len, i = 0, count = 0;
437
438 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
439 /* bail because we already have a command pending */
440 dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
441 __func__, adapter->current_op);
442 return;
443 }
444 list_for_each_entry(f, &adapter->mac_filter_list, list) {
445 if (f->remove)
446 count++;
447 }
448 if (!count) {
449 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER;
450 return;
451 }
452 adapter->current_op = I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS;
453
454 len = sizeof(struct i40e_virtchnl_ether_addr_list) +
455 (count * sizeof(struct i40e_virtchnl_ether_addr));
456 if (len > I40EVF_MAX_AQ_BUF_SIZE) {
457 dev_warn(&adapter->pdev->dev, "%s: Too many MAC address changes in one request.\n",
458 __func__);
459 count = (I40EVF_MAX_AQ_BUF_SIZE -
460 sizeof(struct i40e_virtchnl_ether_addr_list)) /
461 sizeof(struct i40e_virtchnl_ether_addr);
462 len = I40EVF_MAX_AQ_BUF_SIZE;
463 }
464 veal = kzalloc(len, GFP_ATOMIC);
465 if (!veal) {
466 dev_err(&adapter->pdev->dev, "%s: unable to allocate memory\n",
467 __func__);
468 return;
469 }
470 veal->vsi_id = adapter->vsi_res->vsi_id;
471 veal->num_elements = count;
472 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
473 if (f->remove) {
474 memcpy(veal->list[i].addr, f->macaddr, ETH_ALEN);
475 i++;
476 list_del(&f->list);
477 kfree(f);
478 }
479 }
480 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
481 (u8 *)veal, len);
482 kfree(veal);
483 adapter->aq_pending |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
484 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER;
485}
486
487/**
488 * i40evf_add_vlans
489 * @adapter: adapter structure
490 * @vlans: the VLANs to add
491 * @count: number of VLANs
492 *
493 * Request that the PF add one or more VLAN filters to our VSI.
494 **/
495void i40evf_add_vlans(struct i40evf_adapter *adapter)
496{
497 struct i40e_virtchnl_vlan_filter_list *vvfl;
498 int len, i = 0, count = 0;
499 struct i40evf_vlan_filter *f;
500
501 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
502 /* bail because we already have a command pending */
503 dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
504 __func__, adapter->current_op);
505 return;
506 }
507
508 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
509 if (f->add)
510 count++;
511 }
512 if (!count) {
513 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
514 return;
515 }
516 adapter->current_op = I40E_VIRTCHNL_OP_ADD_VLAN;
517
518 len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
519 (count * sizeof(u16));
520 if (len > I40EVF_MAX_AQ_BUF_SIZE) {
521 dev_warn(&adapter->pdev->dev, "%s: Too many VLAN changes in one request.\n",
522 __func__);
523 count = (I40EVF_MAX_AQ_BUF_SIZE -
524 sizeof(struct i40e_virtchnl_vlan_filter_list)) /
525 sizeof(u16);
526 len = I40EVF_MAX_AQ_BUF_SIZE;
527 }
528 vvfl = kzalloc(len, GFP_ATOMIC);
529 if (!vvfl) {
530 dev_err(&adapter->pdev->dev, "%s: unable to allocate memory\n",
531 __func__);
532 return;
533 }
534 vvfl->vsi_id = adapter->vsi_res->vsi_id;
535 vvfl->num_elements = count;
536 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
537 if (f->add) {
538 vvfl->vlan_id[i] = f->vlan;
539 i++;
540 f->add = false;
541 }
542 }
543 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_VLAN, (u8 *)vvfl, len);
544 kfree(vvfl);
545 adapter->aq_pending |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
546 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
547}
548
549/**
550 * i40evf_del_vlans
551 * @adapter: adapter structure
552 * @vlans: the VLANs to remove
553 * @count: number of VLANs
554 *
555 * Request that the PF remove one or more VLAN filters from our VSI.
556 **/
557void i40evf_del_vlans(struct i40evf_adapter *adapter)
558{
559 struct i40e_virtchnl_vlan_filter_list *vvfl;
560 struct i40evf_vlan_filter *f, *ftmp;
561 int len, i = 0, count = 0;
562
563 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
564 /* bail because we already have a command pending */
565 dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
566 __func__, adapter->current_op);
567 return;
568 }
569
570 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
571 if (f->remove)
572 count++;
573 }
574 if (!count) {
575 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
576 return;
577 }
578 adapter->current_op = I40E_VIRTCHNL_OP_DEL_VLAN;
579
580 len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
581 (count * sizeof(u16));
582 if (len > I40EVF_MAX_AQ_BUF_SIZE) {
583 dev_warn(&adapter->pdev->dev, "%s: Too many VLAN changes in one request.\n",
584 __func__);
585 count = (I40EVF_MAX_AQ_BUF_SIZE -
586 sizeof(struct i40e_virtchnl_vlan_filter_list)) /
587 sizeof(u16);
588 len = I40EVF_MAX_AQ_BUF_SIZE;
589 }
590 vvfl = kzalloc(len, GFP_ATOMIC);
591 if (!vvfl) {
592 dev_err(&adapter->pdev->dev, "%s: unable to allocate memory\n",
593 __func__);
594 return;
595 }
596 vvfl->vsi_id = adapter->vsi_res->vsi_id;
597 vvfl->num_elements = count;
598 list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
599 if (f->remove) {
600 vvfl->vlan_id[i] = f->vlan;
601 i++;
602 list_del(&f->list);
603 kfree(f);
604 }
605 }
606 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_VLAN, (u8 *)vvfl, len);
607 kfree(vvfl);
608 adapter->aq_pending |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
609 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
610}
611
612/**
613 * i40evf_set_promiscuous
614 * @adapter: adapter structure
615 * @flags: bitmask to control unicast/multicast promiscuous.
616 *
617 * Request that the PF enable promiscuous mode for our VSI.
618 **/
619void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags)
620{
621 struct i40e_virtchnl_promisc_info vpi;
622
623 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
624 /* bail because we already have a command pending */
625 dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
626 __func__, adapter->current_op);
627 return;
628 }
629 adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE;
630 vpi.vsi_id = adapter->vsi_res->vsi_id;
631 vpi.flags = flags;
632 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
633 (u8 *)&vpi, sizeof(vpi));
634}
635
636/**
637 * i40evf_request_stats
638 * @adapter: adapter structure
639 *
640 * Request VSI statistics from PF.
641 **/
642void i40evf_request_stats(struct i40evf_adapter *adapter)
643{
644 struct i40e_virtchnl_queue_select vqs;
645 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
646 /* no error message, this isn't crucial */
647 return;
648 }
649 adapter->current_op = I40E_VIRTCHNL_OP_GET_STATS;
650 vqs.vsi_id = adapter->vsi_res->vsi_id;
651 /* queue maps are ignored for this message - only the vsi is used */
652 if (i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_GET_STATS,
653 (u8 *)&vqs, sizeof(vqs)))
654 /* if the request failed, don't lock out others */
655 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
656}
657/**
658 * i40evf_request_reset
659 * @adapter: adapter structure
660 *
661 * Request that the PF reset this VF. No response is expected.
662 **/
663void i40evf_request_reset(struct i40evf_adapter *adapter)
664{
665 /* Don't check CURRENT_OP - this is always higher priority */
666 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_RESET_VF, NULL, 0);
667 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
668}
669
670/**
671 * i40evf_virtchnl_completion
672 * @adapter: adapter structure
673 * @v_opcode: opcode sent by PF
674 * @v_retval: retval sent by PF
675 * @msg: message sent by PF
676 * @msglen: message length
677 *
678 * Asynchronous completion function for admin queue messages. Rather than busy
679 * wait, we fire off our requests and assume that no errors will be returned.
680 * This function handles the reply messages.
681 **/
682void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
683 enum i40e_virtchnl_ops v_opcode,
684 i40e_status v_retval,
685 u8 *msg, u16 msglen)
686{
687 struct net_device *netdev = adapter->netdev;
688
689 if (v_opcode == I40E_VIRTCHNL_OP_EVENT) {
690 struct i40e_virtchnl_pf_event *vpe =
691 (struct i40e_virtchnl_pf_event *)msg;
692 switch (vpe->event) {
693 case I40E_VIRTCHNL_EVENT_LINK_CHANGE:
694 adapter->link_up =
695 vpe->event_data.link_event.link_status;
696 if (adapter->link_up && !netif_carrier_ok(netdev)) {
697 dev_info(&adapter->pdev->dev, "NIC Link is Up\n");
698 netif_carrier_on(netdev);
699 netif_tx_wake_all_queues(netdev);
700 } else if (!adapter->link_up) {
701 dev_info(&adapter->pdev->dev, "NIC Link is Down\n");
702 netif_carrier_off(netdev);
703 netif_tx_stop_all_queues(netdev);
704 }
705 break;
706 case I40E_VIRTCHNL_EVENT_RESET_IMPENDING:
707 dev_info(&adapter->pdev->dev, "PF reset warning received\n");
708 if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING)) {
709 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
710 dev_info(&adapter->pdev->dev, "Scheduling reset task\n");
711 schedule_work(&adapter->reset_task);
712 }
713 break;
714 default:
715 dev_err(&adapter->pdev->dev,
716 "%s: Unknown event %d from pf\n",
717 __func__, vpe->event);
718 break;
719
720 }
721 return;
722 }
723 if (v_opcode != adapter->current_op) {
724 dev_err(&adapter->pdev->dev, "%s: Pending op is %d, received %d.\n",
725 __func__, adapter->current_op, v_opcode);
726 /* We're probably completely screwed at this point, but clear
727 * the current op and try to carry on....
728 */
729 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
730 return;
731 }
732 if (v_retval) {
733 dev_err(&adapter->pdev->dev, "%s: PF returned error %d to our request %d!\n",
734 __func__, v_retval, v_opcode);
735 }
736 switch (v_opcode) {
737 case I40E_VIRTCHNL_OP_GET_STATS: {
738 struct i40e_eth_stats *stats =
739 (struct i40e_eth_stats *)msg;
740 adapter->net_stats.rx_packets = stats->rx_unicast +
741 stats->rx_multicast +
742 stats->rx_broadcast;
743 adapter->net_stats.tx_packets = stats->tx_unicast +
744 stats->tx_multicast +
745 stats->tx_broadcast;
746 adapter->net_stats.rx_bytes = stats->rx_bytes;
747 adapter->net_stats.tx_bytes = stats->tx_bytes;
748 adapter->net_stats.rx_errors = stats->rx_errors;
749 adapter->net_stats.tx_errors = stats->tx_errors;
750 adapter->net_stats.rx_dropped = stats->rx_missed;
751 adapter->net_stats.tx_dropped = stats->tx_discards;
752 adapter->current_stats = *stats;
753 }
754 break;
755 case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
756 adapter->aq_pending &= ~(I40EVF_FLAG_AQ_ADD_MAC_FILTER);
757 break;
758 case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
759 adapter->aq_pending &= ~(I40EVF_FLAG_AQ_DEL_MAC_FILTER);
760 break;
761 case I40E_VIRTCHNL_OP_ADD_VLAN:
762 adapter->aq_pending &= ~(I40EVF_FLAG_AQ_ADD_VLAN_FILTER);
763 break;
764 case I40E_VIRTCHNL_OP_DEL_VLAN:
765 adapter->aq_pending &= ~(I40EVF_FLAG_AQ_DEL_VLAN_FILTER);
766 break;
767 case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
768 adapter->aq_pending &= ~(I40EVF_FLAG_AQ_ENABLE_QUEUES);
769 /* enable transmits */
770 i40evf_irq_enable(adapter, true);
771 netif_tx_start_all_queues(adapter->netdev);
772 netif_carrier_on(adapter->netdev);
773 break;
774 case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
775 adapter->aq_pending &= ~(I40EVF_FLAG_AQ_DISABLE_QUEUES);
776 break;
777 case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
778 adapter->aq_pending &= ~(I40EVF_FLAG_AQ_CONFIGURE_QUEUES);
779 break;
780 case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
781 adapter->aq_pending &= ~(I40EVF_FLAG_AQ_MAP_VECTORS);
782 break;
783 default:
784 dev_warn(&adapter->pdev->dev, "%s: Received unexpected message %d from PF.\n",
785 __func__, v_opcode);
786 break;
787 } /* switch v_opcode */
788 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
789}