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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 * 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 "i40evf.h"
28#include "i40e_prototype.h"
29
30/* busy wait delay in msec */
31#define I40EVF_BUSY_WAIT_DELAY 10
32#define I40EVF_BUSY_WAIT_COUNT 50
33
34/**
35 * i40evf_send_pf_msg
36 * @adapter: adapter structure
37 * @op: virtual channel opcode
38 * @msg: pointer to message buffer
39 * @len: message length
40 *
41 * Send message to PF and print status if failure.
42 **/
43static int i40evf_send_pf_msg(struct i40evf_adapter *adapter,
44 enum i40e_virtchnl_ops op, u8 *msg, u16 len)
45{
46 struct i40e_hw *hw = &adapter->hw;
47 i40e_status err;
48
49 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
50 return 0; /* nothing to see here, move along */
51
52 err = i40e_aq_send_msg_to_pf(hw, op, 0, msg, len, NULL);
53 if (err)
54 dev_err(&adapter->pdev->dev, "Unable to send opcode %d to PF, err %s, aq_err %s\n",
55 op, i40evf_stat_str(hw, err),
56 i40evf_aq_str(hw, hw->aq.asq_last_status));
57 return err;
58}
59
60/**
61 * i40evf_send_api_ver
62 * @adapter: adapter structure
63 *
64 * Send API version admin queue message to the PF. The reply is not checked
65 * in this function. Returns 0 if the message was successfully
66 * sent, or one of the I40E_ADMIN_QUEUE_ERROR_ statuses if not.
67 **/
68int i40evf_send_api_ver(struct i40evf_adapter *adapter)
69{
70 struct i40e_virtchnl_version_info vvi;
71
72 vvi.major = I40E_VIRTCHNL_VERSION_MAJOR;
73 vvi.minor = I40E_VIRTCHNL_VERSION_MINOR;
74
75 return i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_VERSION, (u8 *)&vvi,
76 sizeof(vvi));
77}
78
79/**
80 * i40evf_verify_api_ver
81 * @adapter: adapter structure
82 *
83 * Compare API versions with the PF. Must be called after admin queue is
84 * initialized. Returns 0 if API versions match, -EIO if they do not,
85 * I40E_ERR_ADMIN_QUEUE_NO_WORK if the admin queue is empty, and any errors
86 * from the firmware are propagated.
87 **/
88int i40evf_verify_api_ver(struct i40evf_adapter *adapter)
89{
90 struct i40e_virtchnl_version_info *pf_vvi;
91 struct i40e_hw *hw = &adapter->hw;
92 struct i40e_arq_event_info event;
93 enum i40e_virtchnl_ops op;
94 i40e_status err;
95
96 event.buf_len = I40EVF_MAX_AQ_BUF_SIZE;
97 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
98 if (!event.msg_buf) {
99 err = -ENOMEM;
100 goto out;
101 }
102
103 while (1) {
104 err = i40evf_clean_arq_element(hw, &event, NULL);
105 /* When the AQ is empty, i40evf_clean_arq_element will return
106 * nonzero and this loop will terminate.
107 */
108 if (err)
109 goto out_alloc;
110 op =
111 (enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
112 if (op == I40E_VIRTCHNL_OP_VERSION)
113 break;
114 }
115
116
117 err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
118 if (err)
119 goto out_alloc;
120
121 if (op != I40E_VIRTCHNL_OP_VERSION) {
122 dev_info(&adapter->pdev->dev, "Invalid reply type %d from PF\n",
123 op);
124 err = -EIO;
125 goto out_alloc;
126 }
127
128 pf_vvi = (struct i40e_virtchnl_version_info *)event.msg_buf;
129 adapter->pf_version = *pf_vvi;
130
131 if ((pf_vvi->major > I40E_VIRTCHNL_VERSION_MAJOR) ||
132 ((pf_vvi->major == I40E_VIRTCHNL_VERSION_MAJOR) &&
133 (pf_vvi->minor > I40E_VIRTCHNL_VERSION_MINOR)))
134 err = -EIO;
135
136out_alloc:
137 kfree(event.msg_buf);
138out:
139 return err;
140}
141
142/**
143 * i40evf_send_vf_config_msg
144 * @adapter: adapter structure
145 *
146 * Send VF configuration request admin queue message to the PF. The reply
147 * is not checked in this function. Returns 0 if the message was
148 * successfully sent, or one of the I40E_ADMIN_QUEUE_ERROR_ statuses if not.
149 **/
150int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter)
151{
152 u32 caps;
153
154 adapter->current_op = I40E_VIRTCHNL_OP_GET_VF_RESOURCES;
155 adapter->aq_required &= ~I40EVF_FLAG_AQ_GET_CONFIG;
156 caps = I40E_VIRTCHNL_VF_OFFLOAD_L2 |
157 I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ |
158 I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG |
159 I40E_VIRTCHNL_VF_OFFLOAD_VLAN |
160 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR |
161 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
162
163 adapter->current_op = I40E_VIRTCHNL_OP_GET_VF_RESOURCES;
164 adapter->aq_required &= ~I40EVF_FLAG_AQ_GET_CONFIG;
165 if (PF_IS_V11(adapter))
166 return i40evf_send_pf_msg(adapter,
167 I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
168 (u8 *)&caps, sizeof(caps));
169 else
170 return i40evf_send_pf_msg(adapter,
171 I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
172 NULL, 0);
173}
174
175/**
176 * i40evf_get_vf_config
177 * @hw: pointer to the hardware structure
178 * @len: length of buffer
179 *
180 * Get VF configuration from PF and populate hw structure. Must be called after
181 * admin queue is initialized. Busy waits until response is received from PF,
182 * with maximum timeout. Response from PF is returned in the buffer for further
183 * processing by the caller.
184 **/
185int i40evf_get_vf_config(struct i40evf_adapter *adapter)
186{
187 struct i40e_hw *hw = &adapter->hw;
188 struct i40e_arq_event_info event;
189 enum i40e_virtchnl_ops op;
190 i40e_status err;
191 u16 len;
192
193 len = sizeof(struct i40e_virtchnl_vf_resource) +
194 I40E_MAX_VF_VSI * sizeof(struct i40e_virtchnl_vsi_resource);
195 event.buf_len = len;
196 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
197 if (!event.msg_buf) {
198 err = -ENOMEM;
199 goto out;
200 }
201
202 while (1) {
203 /* When the AQ is empty, i40evf_clean_arq_element will return
204 * nonzero and this loop will terminate.
205 */
206 err = i40evf_clean_arq_element(hw, &event, NULL);
207 if (err)
208 goto out_alloc;
209 op =
210 (enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
211 if (op == I40E_VIRTCHNL_OP_GET_VF_RESOURCES)
212 break;
213 }
214
215 err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
216 memcpy(adapter->vf_res, event.msg_buf, min(event.msg_len, len));
217
218 i40e_vf_parse_hw_config(hw, adapter->vf_res);
219out_alloc:
220 kfree(event.msg_buf);
221out:
222 return err;
223}
224
225/**
226 * i40evf_configure_queues
227 * @adapter: adapter structure
228 *
229 * Request that the PF set up our (previously allocated) queues.
230 **/
231void i40evf_configure_queues(struct i40evf_adapter *adapter)
232{
233 struct i40e_virtchnl_vsi_queue_config_info *vqci;
234 struct i40e_virtchnl_queue_pair_info *vqpi;
235 int pairs = adapter->num_active_queues;
236 int i, len;
237
238 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
239 /* bail because we already have a command pending */
240 dev_err(&adapter->pdev->dev, "Cannot configure queues, command %d pending\n",
241 adapter->current_op);
242 return;
243 }
244 adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES;
245 len = sizeof(struct i40e_virtchnl_vsi_queue_config_info) +
246 (sizeof(struct i40e_virtchnl_queue_pair_info) * pairs);
247 vqci = kzalloc(len, GFP_KERNEL);
248 if (!vqci)
249 return;
250
251 vqci->vsi_id = adapter->vsi_res->vsi_id;
252 vqci->num_queue_pairs = pairs;
253 vqpi = vqci->qpair;
254 /* Size check is not needed here - HW max is 16 queue pairs, and we
255 * can fit info for 31 of them into the AQ buffer before it overflows.
256 */
257 for (i = 0; i < pairs; i++) {
258 vqpi->txq.vsi_id = vqci->vsi_id;
259 vqpi->txq.queue_id = i;
260 vqpi->txq.ring_len = adapter->tx_rings[i].count;
261 vqpi->txq.dma_ring_addr = adapter->tx_rings[i].dma;
262 vqpi->txq.headwb_enabled = 1;
263 vqpi->txq.dma_headwb_addr = vqpi->txq.dma_ring_addr +
264 (vqpi->txq.ring_len * sizeof(struct i40e_tx_desc));
265
266 vqpi->rxq.vsi_id = vqci->vsi_id;
267 vqpi->rxq.queue_id = i;
268 vqpi->rxq.ring_len = adapter->rx_rings[i].count;
269 vqpi->rxq.dma_ring_addr = adapter->rx_rings[i].dma;
270 vqpi->rxq.max_pkt_size = adapter->netdev->mtu
271 + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
272 vqpi->rxq.databuffer_size = adapter->rx_rings[i].rx_buf_len;
273 vqpi++;
274 }
275
276 adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
277 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
278 (u8 *)vqci, len);
279 kfree(vqci);
280}
281
282/**
283 * i40evf_enable_queues
284 * @adapter: adapter structure
285 *
286 * Request that the PF enable all of our queues.
287 **/
288void i40evf_enable_queues(struct i40evf_adapter *adapter)
289{
290 struct i40e_virtchnl_queue_select vqs;
291
292 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
293 /* bail because we already have a command pending */
294 dev_err(&adapter->pdev->dev, "Cannot enable queues, command %d pending\n",
295 adapter->current_op);
296 return;
297 }
298 adapter->current_op = I40E_VIRTCHNL_OP_ENABLE_QUEUES;
299 vqs.vsi_id = adapter->vsi_res->vsi_id;
300 vqs.tx_queues = BIT(adapter->num_active_queues) - 1;
301 vqs.rx_queues = vqs.tx_queues;
302 adapter->aq_required &= ~I40EVF_FLAG_AQ_ENABLE_QUEUES;
303 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
304 (u8 *)&vqs, sizeof(vqs));
305}
306
307/**
308 * i40evf_disable_queues
309 * @adapter: adapter structure
310 *
311 * Request that the PF disable all of our queues.
312 **/
313void i40evf_disable_queues(struct i40evf_adapter *adapter)
314{
315 struct i40e_virtchnl_queue_select vqs;
316
317 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
318 /* bail because we already have a command pending */
319 dev_err(&adapter->pdev->dev, "Cannot disable queues, command %d pending\n",
320 adapter->current_op);
321 return;
322 }
323 adapter->current_op = I40E_VIRTCHNL_OP_DISABLE_QUEUES;
324 vqs.vsi_id = adapter->vsi_res->vsi_id;
325 vqs.tx_queues = BIT(adapter->num_active_queues) - 1;
326 vqs.rx_queues = vqs.tx_queues;
327 adapter->aq_required &= ~I40EVF_FLAG_AQ_DISABLE_QUEUES;
328 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
329 (u8 *)&vqs, sizeof(vqs));
330}
331
332/**
333 * i40evf_map_queues
334 * @adapter: adapter structure
335 *
336 * Request that the PF map queues to interrupt vectors. Misc causes, including
337 * admin queue, are always mapped to vector 0.
338 **/
339void i40evf_map_queues(struct i40evf_adapter *adapter)
340{
341 struct i40e_virtchnl_irq_map_info *vimi;
342 int v_idx, q_vectors, len;
343 struct i40e_q_vector *q_vector;
344
345 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
346 /* bail because we already have a command pending */
347 dev_err(&adapter->pdev->dev, "Cannot map queues to vectors, command %d pending\n",
348 adapter->current_op);
349 return;
350 }
351 adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP;
352
353 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
354
355 len = sizeof(struct i40e_virtchnl_irq_map_info) +
356 (adapter->num_msix_vectors *
357 sizeof(struct i40e_virtchnl_vector_map));
358 vimi = kzalloc(len, GFP_KERNEL);
359 if (!vimi)
360 return;
361
362 vimi->num_vectors = adapter->num_msix_vectors;
363 /* Queue vectors first */
364 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
365 q_vector = adapter->q_vectors + v_idx;
366 vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
367 vimi->vecmap[v_idx].vector_id = v_idx + NONQ_VECS;
368 vimi->vecmap[v_idx].txq_map = q_vector->ring_mask;
369 vimi->vecmap[v_idx].rxq_map = q_vector->ring_mask;
370 }
371 /* Misc vector last - this is only for AdminQ messages */
372 vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
373 vimi->vecmap[v_idx].vector_id = 0;
374 vimi->vecmap[v_idx].txq_map = 0;
375 vimi->vecmap[v_idx].rxq_map = 0;
376
377 adapter->aq_required &= ~I40EVF_FLAG_AQ_MAP_VECTORS;
378 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
379 (u8 *)vimi, len);
380 kfree(vimi);
381}
382
383/**
384 * i40evf_add_ether_addrs
385 * @adapter: adapter structure
386 * @addrs: the MAC address filters to add (contiguous)
387 * @count: number of filters
388 *
389 * Request that the PF add one or more addresses to our filters.
390 **/
391void i40evf_add_ether_addrs(struct i40evf_adapter *adapter)
392{
393 struct i40e_virtchnl_ether_addr_list *veal;
394 int len, i = 0, count = 0;
395 struct i40evf_mac_filter *f;
396 bool more = false;
397
398 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
399 /* bail because we already have a command pending */
400 dev_err(&adapter->pdev->dev, "Cannot add filters, command %d pending\n",
401 adapter->current_op);
402 return;
403 }
404 list_for_each_entry(f, &adapter->mac_filter_list, list) {
405 if (f->add)
406 count++;
407 }
408 if (!count) {
409 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER;
410 return;
411 }
412 adapter->current_op = I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS;
413
414 len = sizeof(struct i40e_virtchnl_ether_addr_list) +
415 (count * sizeof(struct i40e_virtchnl_ether_addr));
416 if (len > I40EVF_MAX_AQ_BUF_SIZE) {
417 dev_warn(&adapter->pdev->dev, "Too many add MAC changes in one request\n");
418 count = (I40EVF_MAX_AQ_BUF_SIZE -
419 sizeof(struct i40e_virtchnl_ether_addr_list)) /
420 sizeof(struct i40e_virtchnl_ether_addr);
421 len = sizeof(struct i40e_virtchnl_ether_addr_list) +
422 (count * sizeof(struct i40e_virtchnl_ether_addr));
423 more = true;
424 }
425
426 veal = kzalloc(len, GFP_KERNEL);
427 if (!veal)
428 return;
429
430 veal->vsi_id = adapter->vsi_res->vsi_id;
431 veal->num_elements = count;
432 list_for_each_entry(f, &adapter->mac_filter_list, list) {
433 if (f->add) {
434 ether_addr_copy(veal->list[i].addr, f->macaddr);
435 i++;
436 f->add = false;
437 if (i == count)
438 break;
439 }
440 }
441 if (!more)
442 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER;
443 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
444 (u8 *)veal, len);
445 kfree(veal);
446}
447
448/**
449 * i40evf_del_ether_addrs
450 * @adapter: adapter structure
451 * @addrs: the MAC address filters to remove (contiguous)
452 * @count: number of filtes
453 *
454 * Request that the PF remove one or more addresses from our filters.
455 **/
456void i40evf_del_ether_addrs(struct i40evf_adapter *adapter)
457{
458 struct i40e_virtchnl_ether_addr_list *veal;
459 struct i40evf_mac_filter *f, *ftmp;
460 int len, i = 0, count = 0;
461 bool more = false;
462
463 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
464 /* bail because we already have a command pending */
465 dev_err(&adapter->pdev->dev, "Cannot remove filters, command %d pending\n",
466 adapter->current_op);
467 return;
468 }
469 list_for_each_entry(f, &adapter->mac_filter_list, list) {
470 if (f->remove)
471 count++;
472 }
473 if (!count) {
474 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER;
475 return;
476 }
477 adapter->current_op = I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS;
478
479 len = sizeof(struct i40e_virtchnl_ether_addr_list) +
480 (count * sizeof(struct i40e_virtchnl_ether_addr));
481 if (len > I40EVF_MAX_AQ_BUF_SIZE) {
482 dev_warn(&adapter->pdev->dev, "Too many delete MAC changes in one request\n");
483 count = (I40EVF_MAX_AQ_BUF_SIZE -
484 sizeof(struct i40e_virtchnl_ether_addr_list)) /
485 sizeof(struct i40e_virtchnl_ether_addr);
486 len = sizeof(struct i40e_virtchnl_ether_addr_list) +
487 (count * sizeof(struct i40e_virtchnl_ether_addr));
488 more = true;
489 }
490 veal = kzalloc(len, GFP_KERNEL);
491 if (!veal)
492 return;
493
494 veal->vsi_id = adapter->vsi_res->vsi_id;
495 veal->num_elements = count;
496 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
497 if (f->remove) {
498 ether_addr_copy(veal->list[i].addr, f->macaddr);
499 i++;
500 list_del(&f->list);
501 kfree(f);
502 if (i == count)
503 break;
504 }
505 }
506 if (!more)
507 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER;
508 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
509 (u8 *)veal, len);
510 kfree(veal);
511}
512
513/**
514 * i40evf_add_vlans
515 * @adapter: adapter structure
516 * @vlans: the VLANs to add
517 * @count: number of VLANs
518 *
519 * Request that the PF add one or more VLAN filters to our VSI.
520 **/
521void i40evf_add_vlans(struct i40evf_adapter *adapter)
522{
523 struct i40e_virtchnl_vlan_filter_list *vvfl;
524 int len, i = 0, count = 0;
525 struct i40evf_vlan_filter *f;
526 bool more = false;
527
528 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
529 /* bail because we already have a command pending */
530 dev_err(&adapter->pdev->dev, "Cannot add VLANs, command %d pending\n",
531 adapter->current_op);
532 return;
533 }
534
535 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
536 if (f->add)
537 count++;
538 }
539 if (!count) {
540 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
541 return;
542 }
543 adapter->current_op = I40E_VIRTCHNL_OP_ADD_VLAN;
544
545 len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
546 (count * sizeof(u16));
547 if (len > I40EVF_MAX_AQ_BUF_SIZE) {
548 dev_warn(&adapter->pdev->dev, "Too many add VLAN changes in one request\n");
549 count = (I40EVF_MAX_AQ_BUF_SIZE -
550 sizeof(struct i40e_virtchnl_vlan_filter_list)) /
551 sizeof(u16);
552 len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
553 (count * sizeof(u16));
554 more = true;
555 }
556 vvfl = kzalloc(len, GFP_KERNEL);
557 if (!vvfl)
558 return;
559
560 vvfl->vsi_id = adapter->vsi_res->vsi_id;
561 vvfl->num_elements = count;
562 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
563 if (f->add) {
564 vvfl->vlan_id[i] = f->vlan;
565 i++;
566 f->add = false;
567 if (i == count)
568 break;
569 }
570 }
571 if (!more)
572 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
573 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_VLAN, (u8 *)vvfl, len);
574 kfree(vvfl);
575}
576
577/**
578 * i40evf_del_vlans
579 * @adapter: adapter structure
580 * @vlans: the VLANs to remove
581 * @count: number of VLANs
582 *
583 * Request that the PF remove one or more VLAN filters from our VSI.
584 **/
585void i40evf_del_vlans(struct i40evf_adapter *adapter)
586{
587 struct i40e_virtchnl_vlan_filter_list *vvfl;
588 struct i40evf_vlan_filter *f, *ftmp;
589 int len, i = 0, count = 0;
590 bool more = false;
591
592 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
593 /* bail because we already have a command pending */
594 dev_err(&adapter->pdev->dev, "Cannot remove VLANs, command %d pending\n",
595 adapter->current_op);
596 return;
597 }
598
599 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
600 if (f->remove)
601 count++;
602 }
603 if (!count) {
604 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
605 return;
606 }
607 adapter->current_op = I40E_VIRTCHNL_OP_DEL_VLAN;
608
609 len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
610 (count * sizeof(u16));
611 if (len > I40EVF_MAX_AQ_BUF_SIZE) {
612 dev_warn(&adapter->pdev->dev, "Too many delete VLAN changes in one request\n");
613 count = (I40EVF_MAX_AQ_BUF_SIZE -
614 sizeof(struct i40e_virtchnl_vlan_filter_list)) /
615 sizeof(u16);
616 len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
617 (count * sizeof(u16));
618 more = true;
619 }
620 vvfl = kzalloc(len, GFP_KERNEL);
621 if (!vvfl)
622 return;
623
624 vvfl->vsi_id = adapter->vsi_res->vsi_id;
625 vvfl->num_elements = count;
626 list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
627 if (f->remove) {
628 vvfl->vlan_id[i] = f->vlan;
629 i++;
630 list_del(&f->list);
631 kfree(f);
632 if (i == count)
633 break;
634 }
635 }
636 if (!more)
637 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
638 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_VLAN, (u8 *)vvfl, len);
639 kfree(vvfl);
640}
641
642/**
643 * i40evf_set_promiscuous
644 * @adapter: adapter structure
645 * @flags: bitmask to control unicast/multicast promiscuous.
646 *
647 * Request that the PF enable promiscuous mode for our VSI.
648 **/
649void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags)
650{
651 struct i40e_virtchnl_promisc_info vpi;
652 int promisc_all;
653
654 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
655 /* bail because we already have a command pending */
656 dev_err(&adapter->pdev->dev, "Cannot set promiscuous mode, command %d pending\n",
657 adapter->current_op);
658 return;
659 }
660
661 promisc_all = I40E_FLAG_VF_UNICAST_PROMISC |
662 I40E_FLAG_VF_MULTICAST_PROMISC;
663 if ((flags & promisc_all) == promisc_all) {
664 adapter->flags |= I40EVF_FLAG_PROMISC_ON;
665 adapter->aq_required &= ~I40EVF_FLAG_AQ_REQUEST_PROMISC;
666 dev_info(&adapter->pdev->dev, "Entering promiscuous mode\n");
667 }
668
669 if (flags & I40E_FLAG_VF_MULTICAST_PROMISC) {
670 adapter->flags |= I40EVF_FLAG_ALLMULTI_ON;
671 adapter->aq_required &= ~I40EVF_FLAG_AQ_REQUEST_ALLMULTI;
672 dev_info(&adapter->pdev->dev, "Entering multicast promiscuous mode\n");
673 }
674
675 if (!flags) {
676 adapter->flags &= ~I40EVF_FLAG_PROMISC_ON;
677 adapter->aq_required &= ~I40EVF_FLAG_AQ_RELEASE_PROMISC;
678 dev_info(&adapter->pdev->dev, "Leaving promiscuous mode\n");
679 }
680
681 adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE;
682 vpi.vsi_id = adapter->vsi_res->vsi_id;
683 vpi.flags = flags;
684 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
685 (u8 *)&vpi, sizeof(vpi));
686}
687
688/**
689 * i40evf_request_stats
690 * @adapter: adapter structure
691 *
692 * Request VSI statistics from PF.
693 **/
694void i40evf_request_stats(struct i40evf_adapter *adapter)
695{
696 struct i40e_virtchnl_queue_select vqs;
697
698 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
699 /* no error message, this isn't crucial */
700 return;
701 }
702 adapter->current_op = I40E_VIRTCHNL_OP_GET_STATS;
703 vqs.vsi_id = adapter->vsi_res->vsi_id;
704 /* queue maps are ignored for this message - only the vsi is used */
705 if (i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_GET_STATS,
706 (u8 *)&vqs, sizeof(vqs)))
707 /* if the request failed, don't lock out others */
708 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
709}
710
711/**
712 * i40evf_get_hena
713 * @adapter: adapter structure
714 *
715 * Request hash enable capabilities from PF
716 **/
717void i40evf_get_hena(struct i40evf_adapter *adapter)
718{
719 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
720 /* bail because we already have a command pending */
721 dev_err(&adapter->pdev->dev, "Cannot get RSS hash capabilities, command %d pending\n",
722 adapter->current_op);
723 return;
724 }
725 adapter->current_op = I40E_VIRTCHNL_OP_GET_RSS_HENA_CAPS;
726 adapter->aq_required &= ~I40EVF_FLAG_AQ_GET_HENA;
727 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_GET_RSS_HENA_CAPS,
728 NULL, 0);
729}
730
731/**
732 * i40evf_set_hena
733 * @adapter: adapter structure
734 *
735 * Request the PF to set our RSS hash capabilities
736 **/
737void i40evf_set_hena(struct i40evf_adapter *adapter)
738{
739 struct i40e_virtchnl_rss_hena vrh;
740
741 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
742 /* bail because we already have a command pending */
743 dev_err(&adapter->pdev->dev, "Cannot set RSS hash enable, command %d pending\n",
744 adapter->current_op);
745 return;
746 }
747 vrh.hena = adapter->hena;
748 adapter->current_op = I40E_VIRTCHNL_OP_SET_RSS_HENA;
749 adapter->aq_required &= ~I40EVF_FLAG_AQ_SET_HENA;
750 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_SET_RSS_HENA,
751 (u8 *)&vrh, sizeof(vrh));
752}
753
754/**
755 * i40evf_set_rss_key
756 * @adapter: adapter structure
757 *
758 * Request the PF to set our RSS hash key
759 **/
760void i40evf_set_rss_key(struct i40evf_adapter *adapter)
761{
762 struct i40e_virtchnl_rss_key *vrk;
763 int len;
764
765 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
766 /* bail because we already have a command pending */
767 dev_err(&adapter->pdev->dev, "Cannot set RSS key, command %d pending\n",
768 adapter->current_op);
769 return;
770 }
771 len = sizeof(struct i40e_virtchnl_rss_key) +
772 (adapter->rss_key_size * sizeof(u8)) - 1;
773 vrk = kzalloc(len, GFP_KERNEL);
774 if (!vrk)
775 return;
776 vrk->vsi_id = adapter->vsi.id;
777 vrk->key_len = adapter->rss_key_size;
778 memcpy(vrk->key, adapter->rss_key, adapter->rss_key_size);
779
780 adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_RSS_KEY;
781 adapter->aq_required &= ~I40EVF_FLAG_AQ_SET_RSS_KEY;
782 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_RSS_KEY,
783 (u8 *)vrk, len);
784 kfree(vrk);
785}
786
787/**
788 * i40evf_set_rss_lut
789 * @adapter: adapter structure
790 *
791 * Request the PF to set our RSS lookup table
792 **/
793void i40evf_set_rss_lut(struct i40evf_adapter *adapter)
794{
795 struct i40e_virtchnl_rss_lut *vrl;
796 int len;
797
798 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
799 /* bail because we already have a command pending */
800 dev_err(&adapter->pdev->dev, "Cannot set RSS LUT, command %d pending\n",
801 adapter->current_op);
802 return;
803 }
804 len = sizeof(struct i40e_virtchnl_rss_lut) +
805 (adapter->rss_lut_size * sizeof(u8)) - 1;
806 vrl = kzalloc(len, GFP_KERNEL);
807 if (!vrl)
808 return;
809 vrl->vsi_id = adapter->vsi.id;
810 vrl->lut_entries = adapter->rss_lut_size;
811 memcpy(vrl->lut, adapter->rss_lut, adapter->rss_lut_size);
812 adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_RSS_LUT;
813 adapter->aq_required &= ~I40EVF_FLAG_AQ_SET_RSS_LUT;
814 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_RSS_LUT,
815 (u8 *)vrl, len);
816 kfree(vrl);
817}
818
819/**
820 * i40evf_print_link_message - print link up or down
821 * @adapter: adapter structure
822 *
823 * Log a message telling the world of our wonderous link status
824 */
825static void i40evf_print_link_message(struct i40evf_adapter *adapter)
826{
827 struct net_device *netdev = adapter->netdev;
828 char *speed = "Unknown ";
829
830 if (!adapter->link_up) {
831 netdev_info(netdev, "NIC Link is Down\n");
832 return;
833 }
834
835 switch (adapter->link_speed) {
836 case I40E_LINK_SPEED_40GB:
837 speed = "40 G";
838 break;
839 case I40E_LINK_SPEED_25GB:
840 speed = "25 G";
841 break;
842 case I40E_LINK_SPEED_20GB:
843 speed = "20 G";
844 break;
845 case I40E_LINK_SPEED_10GB:
846 speed = "10 G";
847 break;
848 case I40E_LINK_SPEED_1GB:
849 speed = "1000 M";
850 break;
851 case I40E_LINK_SPEED_100MB:
852 speed = "100 M";
853 break;
854 default:
855 break;
856 }
857
858 netdev_info(netdev, "NIC Link is Up %sbps Full Duplex\n", speed);
859}
860
861/**
862 * i40evf_request_reset
863 * @adapter: adapter structure
864 *
865 * Request that the PF reset this VF. No response is expected.
866 **/
867void i40evf_request_reset(struct i40evf_adapter *adapter)
868{
869 /* Don't check CURRENT_OP - this is always higher priority */
870 i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_RESET_VF, NULL, 0);
871 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
872}
873
874/**
875 * i40evf_virtchnl_completion
876 * @adapter: adapter structure
877 * @v_opcode: opcode sent by PF
878 * @v_retval: retval sent by PF
879 * @msg: message sent by PF
880 * @msglen: message length
881 *
882 * Asynchronous completion function for admin queue messages. Rather than busy
883 * wait, we fire off our requests and assume that no errors will be returned.
884 * This function handles the reply messages.
885 **/
886void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
887 enum i40e_virtchnl_ops v_opcode,
888 i40e_status v_retval,
889 u8 *msg, u16 msglen)
890{
891 struct net_device *netdev = adapter->netdev;
892
893 if (v_opcode == I40E_VIRTCHNL_OP_EVENT) {
894 struct i40e_virtchnl_pf_event *vpe =
895 (struct i40e_virtchnl_pf_event *)msg;
896 switch (vpe->event) {
897 case I40E_VIRTCHNL_EVENT_LINK_CHANGE:
898 adapter->link_speed =
899 vpe->event_data.link_event.link_speed;
900 if (adapter->link_up !=
901 vpe->event_data.link_event.link_status) {
902 adapter->link_up =
903 vpe->event_data.link_event.link_status;
904 if (adapter->link_up) {
905 netif_tx_start_all_queues(netdev);
906 netif_carrier_on(netdev);
907 } else {
908 netif_tx_stop_all_queues(netdev);
909 netif_carrier_off(netdev);
910 }
911 i40evf_print_link_message(adapter);
912 }
913 break;
914 case I40E_VIRTCHNL_EVENT_RESET_IMPENDING:
915 dev_info(&adapter->pdev->dev, "PF reset warning received\n");
916 if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING)) {
917 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
918 dev_info(&adapter->pdev->dev, "Scheduling reset task\n");
919 schedule_work(&adapter->reset_task);
920 }
921 break;
922 default:
923 dev_err(&adapter->pdev->dev, "Unknown event %d from PF\n",
924 vpe->event);
925 break;
926 }
927 return;
928 }
929 if (v_retval) {
930 switch (v_opcode) {
931 case I40E_VIRTCHNL_OP_ADD_VLAN:
932 dev_err(&adapter->pdev->dev, "Failed to add VLAN filter, error %s\n",
933 i40evf_stat_str(&adapter->hw, v_retval));
934 break;
935 case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
936 dev_err(&adapter->pdev->dev, "Failed to add MAC filter, error %s\n",
937 i40evf_stat_str(&adapter->hw, v_retval));
938 break;
939 case I40E_VIRTCHNL_OP_DEL_VLAN:
940 dev_err(&adapter->pdev->dev, "Failed to delete VLAN filter, error %s\n",
941 i40evf_stat_str(&adapter->hw, v_retval));
942 break;
943 case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
944 dev_err(&adapter->pdev->dev, "Failed to delete MAC filter, error %s\n",
945 i40evf_stat_str(&adapter->hw, v_retval));
946 break;
947 default:
948 dev_err(&adapter->pdev->dev, "PF returned error %d (%s) to our request %d\n",
949 v_retval,
950 i40evf_stat_str(&adapter->hw, v_retval),
951 v_opcode);
952 }
953 }
954 switch (v_opcode) {
955 case I40E_VIRTCHNL_OP_GET_STATS: {
956 struct i40e_eth_stats *stats =
957 (struct i40e_eth_stats *)msg;
958 adapter->net_stats.rx_packets = stats->rx_unicast +
959 stats->rx_multicast +
960 stats->rx_broadcast;
961 adapter->net_stats.tx_packets = stats->tx_unicast +
962 stats->tx_multicast +
963 stats->tx_broadcast;
964 adapter->net_stats.rx_bytes = stats->rx_bytes;
965 adapter->net_stats.tx_bytes = stats->tx_bytes;
966 adapter->net_stats.tx_errors = stats->tx_errors;
967 adapter->net_stats.rx_dropped = stats->rx_discards;
968 adapter->net_stats.tx_dropped = stats->tx_discards;
969 adapter->current_stats = *stats;
970 }
971 break;
972 case I40E_VIRTCHNL_OP_GET_VF_RESOURCES: {
973 u16 len = sizeof(struct i40e_virtchnl_vf_resource) +
974 I40E_MAX_VF_VSI *
975 sizeof(struct i40e_virtchnl_vsi_resource);
976 memcpy(adapter->vf_res, msg, min(msglen, len));
977 i40e_vf_parse_hw_config(&adapter->hw, adapter->vf_res);
978 /* restore current mac address */
979 ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
980 i40evf_process_config(adapter);
981 }
982 break;
983 case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
984 /* enable transmits */
985 i40evf_irq_enable(adapter, true);
986 break;
987 case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
988 i40evf_free_all_tx_resources(adapter);
989 i40evf_free_all_rx_resources(adapter);
990 if (adapter->state == __I40EVF_DOWN_PENDING)
991 adapter->state = __I40EVF_DOWN;
992 break;
993 case I40E_VIRTCHNL_OP_VERSION:
994 case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
995 /* Don't display an error if we get these out of sequence.
996 * If the firmware needed to get kicked, we'll get these and
997 * it's no problem.
998 */
999 if (v_opcode != adapter->current_op)
1000 return;
1001 break;
1002 case I40E_VIRTCHNL_OP_GET_RSS_HENA_CAPS: {
1003 struct i40e_virtchnl_rss_hena *vrh =
1004 (struct i40e_virtchnl_rss_hena *)msg;
1005 if (msglen == sizeof(*vrh))
1006 adapter->hena = vrh->hena;
1007 else
1008 dev_warn(&adapter->pdev->dev,
1009 "Invalid message %d from PF\n", v_opcode);
1010 }
1011 break;
1012 default:
1013 if (v_opcode != adapter->current_op)
1014 dev_warn(&adapter->pdev->dev, "Expected response %d from PF, received %d\n",
1015 adapter->current_op, v_opcode);
1016 break;
1017 } /* switch v_opcode */
1018 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
1019}