1 /**********************************************************************
2 * Author: Cavium, Inc.
3 *
4 * Contact: support@cavium.com
5 * Please include "LiquidIO" in the subject.
6 *
7 * Copyright (c) 2003-2017 Cavium, Inc.
8 *
9 * This file is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License, Version 2, as
11 * published by the Free Software Foundation.
12 *
13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT. See the GNU General Public License for more details.
17 ***********************************************************************/
18 #include <linux/pci.h>
19 #include <linux/if_vlan.h>
20 #include "liquidio_common.h"
21 #include "octeon_droq.h"
22 #include "octeon_iq.h"
23 #include "response_manager.h"
24 #include "octeon_device.h"
25 #include "octeon_nic.h"
26 #include "octeon_main.h"
27 #include "octeon_network.h"
28 #include "lio_vf_rep.h"
29
30 static int lio_vf_rep_open(struct net_device *ndev);
31 static int lio_vf_rep_stop(struct net_device *ndev);
32 static netdev_tx_t lio_vf_rep_pkt_xmit(struct sk_buff *skb,
33 struct net_device *ndev);
34 static void lio_vf_rep_tx_timeout(struct net_device *netdev, unsigned int txqueue);
35 static int lio_vf_rep_phys_port_name(struct net_device *dev,
36 char *buf, size_t len);
37 static void lio_vf_rep_get_stats64(struct net_device *dev,
38 struct rtnl_link_stats64 *stats64);
39 static int lio_vf_rep_change_mtu(struct net_device *ndev, int new_mtu);
40 static int lio_vf_get_port_parent_id(struct net_device *dev,
41 struct netdev_phys_item_id *ppid);
42
43 static const struct net_device_ops lio_vf_rep_ndev_ops = {
44 .ndo_open = lio_vf_rep_open,
45 .ndo_stop = lio_vf_rep_stop,
46 .ndo_start_xmit = lio_vf_rep_pkt_xmit,
47 .ndo_tx_timeout = lio_vf_rep_tx_timeout,
48 .ndo_get_phys_port_name = lio_vf_rep_phys_port_name,
49 .ndo_get_stats64 = lio_vf_rep_get_stats64,
50 .ndo_change_mtu = lio_vf_rep_change_mtu,
51 .ndo_get_port_parent_id = lio_vf_get_port_parent_id,
52 };
53
54 static int
lio_vf_rep_send_soft_command(struct octeon_device * oct,void * req,int req_size,void * resp,int resp_size)55 lio_vf_rep_send_soft_command(struct octeon_device *oct,
56 void *req, int req_size,
57 void *resp, int resp_size)
58 {
59 int tot_resp_size = sizeof(struct lio_vf_rep_resp) + resp_size;
60 struct octeon_soft_command *sc = NULL;
61 struct lio_vf_rep_resp *rep_resp;
62 void *sc_req;
63 int err;
64
65 sc = (struct octeon_soft_command *)
66 octeon_alloc_soft_command(oct, req_size,
67 tot_resp_size, 0);
68 if (!sc)
69 return -ENOMEM;
70
71 init_completion(&sc->complete);
72 sc->sc_status = OCTEON_REQUEST_PENDING;
73
74 sc_req = (struct lio_vf_rep_req *)sc->virtdptr;
75 memcpy(sc_req, req, req_size);
76
77 rep_resp = (struct lio_vf_rep_resp *)sc->virtrptr;
78 memset(rep_resp, 0, tot_resp_size);
79 WRITE_ONCE(rep_resp->status, 1);
80
81 sc->iq_no = 0;
82 octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
83 OPCODE_NIC_VF_REP_CMD, 0, 0, 0);
84
85 err = octeon_send_soft_command(oct, sc);
86 if (err == IQ_SEND_FAILED)
87 goto free_buff;
88
89 err = wait_for_sc_completion_timeout(oct, sc, 0);
90 if (err)
91 return err;
92
93 err = READ_ONCE(rep_resp->status) ? -EBUSY : 0;
94 if (err)
95 dev_err(&oct->pci_dev->dev, "VF rep send config failed\n");
96 else if (resp)
97 memcpy(resp, (rep_resp + 1), resp_size);
98
99 WRITE_ONCE(sc->caller_is_done, true);
100 return err;
101
102 free_buff:
103 octeon_free_soft_command(oct, sc);
104
105 return err;
106 }
107
108 static int
lio_vf_rep_open(struct net_device * ndev)109 lio_vf_rep_open(struct net_device *ndev)
110 {
111 struct lio_vf_rep_desc *vf_rep = netdev_priv(ndev);
112 struct lio_vf_rep_req rep_cfg;
113 struct octeon_device *oct;
114 int ret;
115
116 oct = vf_rep->oct;
117
118 memset(&rep_cfg, 0, sizeof(rep_cfg));
119 rep_cfg.req_type = LIO_VF_REP_REQ_STATE;
120 rep_cfg.ifidx = vf_rep->ifidx;
121 rep_cfg.rep_state.state = LIO_VF_REP_STATE_UP;
122
123 ret = lio_vf_rep_send_soft_command(oct, &rep_cfg,
124 sizeof(rep_cfg), NULL, 0);
125
126 if (ret) {
127 dev_err(&oct->pci_dev->dev,
128 "VF_REP open failed with err %d\n", ret);
129 return -EIO;
130 }
131
132 atomic_set(&vf_rep->ifstate, (atomic_read(&vf_rep->ifstate) |
133 LIO_IFSTATE_RUNNING));
134
135 netif_carrier_on(ndev);
136 netif_start_queue(ndev);
137
138 return 0;
139 }
140
141 static int
lio_vf_rep_stop(struct net_device * ndev)142 lio_vf_rep_stop(struct net_device *ndev)
143 {
144 struct lio_vf_rep_desc *vf_rep = netdev_priv(ndev);
145 struct lio_vf_rep_req rep_cfg;
146 struct octeon_device *oct;
147 int ret;
148
149 oct = vf_rep->oct;
150
151 memset(&rep_cfg, 0, sizeof(rep_cfg));
152 rep_cfg.req_type = LIO_VF_REP_REQ_STATE;
153 rep_cfg.ifidx = vf_rep->ifidx;
154 rep_cfg.rep_state.state = LIO_VF_REP_STATE_DOWN;
155
156 ret = lio_vf_rep_send_soft_command(oct, &rep_cfg,
157 sizeof(rep_cfg), NULL, 0);
158
159 if (ret) {
160 dev_err(&oct->pci_dev->dev,
161 "VF_REP dev stop failed with err %d\n", ret);
162 return -EIO;
163 }
164
165 atomic_set(&vf_rep->ifstate, (atomic_read(&vf_rep->ifstate) &
166 ~LIO_IFSTATE_RUNNING));
167
168 netif_tx_disable(ndev);
169 netif_carrier_off(ndev);
170
171 return 0;
172 }
173
174 static void
lio_vf_rep_tx_timeout(struct net_device * ndev,unsigned int txqueue)175 lio_vf_rep_tx_timeout(struct net_device *ndev, unsigned int txqueue)
176 {
177 netif_trans_update(ndev);
178
179 netif_wake_queue(ndev);
180 }
181
182 static void
lio_vf_rep_get_stats64(struct net_device * dev,struct rtnl_link_stats64 * stats64)183 lio_vf_rep_get_stats64(struct net_device *dev,
184 struct rtnl_link_stats64 *stats64)
185 {
186 struct lio_vf_rep_desc *vf_rep = netdev_priv(dev);
187
188 /* Swap tx and rx stats as VF rep is a switch port */
189 stats64->tx_packets = vf_rep->stats.rx_packets;
190 stats64->tx_bytes = vf_rep->stats.rx_bytes;
191 stats64->tx_dropped = vf_rep->stats.rx_dropped;
192
193 stats64->rx_packets = vf_rep->stats.tx_packets;
194 stats64->rx_bytes = vf_rep->stats.tx_bytes;
195 stats64->rx_dropped = vf_rep->stats.tx_dropped;
196 }
197
198 static int
lio_vf_rep_change_mtu(struct net_device * ndev,int new_mtu)199 lio_vf_rep_change_mtu(struct net_device *ndev, int new_mtu)
200 {
201 struct lio_vf_rep_desc *vf_rep = netdev_priv(ndev);
202 struct lio_vf_rep_req rep_cfg;
203 struct octeon_device *oct;
204 int ret;
205
206 oct = vf_rep->oct;
207
208 memset(&rep_cfg, 0, sizeof(rep_cfg));
209 rep_cfg.req_type = LIO_VF_REP_REQ_MTU;
210 rep_cfg.ifidx = vf_rep->ifidx;
211 rep_cfg.rep_mtu.mtu = cpu_to_be32(new_mtu);
212
213 ret = lio_vf_rep_send_soft_command(oct, &rep_cfg,
214 sizeof(rep_cfg), NULL, 0);
215 if (ret) {
216 dev_err(&oct->pci_dev->dev,
217 "Change MTU failed with err %d\n", ret);
218 return -EIO;
219 }
220
221 WRITE_ONCE(ndev->mtu, new_mtu);
222
223 return 0;
224 }
225
226 static int
lio_vf_rep_phys_port_name(struct net_device * dev,char * buf,size_t len)227 lio_vf_rep_phys_port_name(struct net_device *dev,
228 char *buf, size_t len)
229 {
230 struct lio_vf_rep_desc *vf_rep = netdev_priv(dev);
231 struct octeon_device *oct = vf_rep->oct;
232 int ret;
233
234 ret = snprintf(buf, len, "pf%dvf%d", oct->pf_num,
235 vf_rep->ifidx - oct->pf_num * 64 - 1);
236 if (ret >= len)
237 return -EOPNOTSUPP;
238
239 return 0;
240 }
241
242 static struct net_device *
lio_vf_rep_get_ndev(struct octeon_device * oct,int ifidx)243 lio_vf_rep_get_ndev(struct octeon_device *oct, int ifidx)
244 {
245 int vf_id, max_vfs = CN23XX_MAX_VFS_PER_PF + 1;
246 int vfid_mask = max_vfs - 1;
247
248 if (ifidx <= oct->pf_num * max_vfs ||
249 ifidx >= oct->pf_num * max_vfs + max_vfs)
250 return NULL;
251
252 /* ifidx 1-63 for PF0 VFs
253 * ifidx 65-127 for PF1 VFs
254 */
255 vf_id = (ifidx & vfid_mask) - 1;
256
257 return oct->vf_rep_list.ndev[vf_id];
258 }
259
260 static void
lio_vf_rep_copy_packet(struct octeon_device * oct,struct sk_buff * skb,int len)261 lio_vf_rep_copy_packet(struct octeon_device *oct,
262 struct sk_buff *skb,
263 int len)
264 {
265 if (likely(len > MIN_SKB_SIZE)) {
266 struct octeon_skb_page_info *pg_info;
267 unsigned char *va;
268
269 pg_info = ((struct octeon_skb_page_info *)(skb->cb));
270 if (pg_info->page) {
271 va = page_address(pg_info->page) +
272 pg_info->page_offset;
273 memcpy(skb->data, va, MIN_SKB_SIZE);
274 skb_put(skb, MIN_SKB_SIZE);
275 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
276 pg_info->page,
277 pg_info->page_offset + MIN_SKB_SIZE,
278 len - MIN_SKB_SIZE,
279 LIO_RXBUFFER_SZ);
280 }
281 } else {
282 struct octeon_skb_page_info *pg_info =
283 ((struct octeon_skb_page_info *)(skb->cb));
284
285 skb_copy_to_linear_data(skb, page_address(pg_info->page) +
286 pg_info->page_offset, len);
287 skb_put(skb, len);
288 put_page(pg_info->page);
289 }
290 }
291
292 static int
lio_vf_rep_pkt_recv(struct octeon_recv_info * recv_info,void * buf)293 lio_vf_rep_pkt_recv(struct octeon_recv_info *recv_info, void *buf)
294 {
295 struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt;
296 struct lio_vf_rep_desc *vf_rep;
297 struct net_device *vf_ndev;
298 struct octeon_device *oct;
299 union octeon_rh *rh;
300 struct sk_buff *skb;
301 int i, ifidx;
302
303 oct = lio_get_device(recv_pkt->octeon_id);
304 if (!oct)
305 goto free_buffers;
306
307 skb = recv_pkt->buffer_ptr[0];
308 rh = &recv_pkt->rh;
309 ifidx = rh->r.ossp;
310
311 vf_ndev = lio_vf_rep_get_ndev(oct, ifidx);
312 if (!vf_ndev)
313 goto free_buffers;
314
315 vf_rep = netdev_priv(vf_ndev);
316 if (!(atomic_read(&vf_rep->ifstate) & LIO_IFSTATE_RUNNING) ||
317 recv_pkt->buffer_count > 1)
318 goto free_buffers;
319
320 skb->dev = vf_ndev;
321
322 /* Multiple buffers are not used for vf_rep packets.
323 * So just buffer_size[0] is valid.
324 */
325 lio_vf_rep_copy_packet(oct, skb, recv_pkt->buffer_size[0]);
326
327 skb_pull(skb, rh->r_dh.len * BYTES_PER_DHLEN_UNIT);
328 skb->protocol = eth_type_trans(skb, skb->dev);
329 skb->ip_summed = CHECKSUM_NONE;
330
331 netif_rx(skb);
332
333 octeon_free_recv_info(recv_info);
334
335 return 0;
336
337 free_buffers:
338 for (i = 0; i < recv_pkt->buffer_count; i++)
339 recv_buffer_free(recv_pkt->buffer_ptr[i]);
340
341 octeon_free_recv_info(recv_info);
342
343 return 0;
344 }
345
346 static void
lio_vf_rep_packet_sent_callback(struct octeon_device * oct,u32 status,void * buf)347 lio_vf_rep_packet_sent_callback(struct octeon_device *oct,
348 u32 status, void *buf)
349 {
350 struct octeon_soft_command *sc = (struct octeon_soft_command *)buf;
351 struct sk_buff *skb = sc->ctxptr;
352 struct net_device *ndev = skb->dev;
353 u32 iq_no;
354
355 dma_unmap_single(&oct->pci_dev->dev, sc->dmadptr,
356 sc->datasize, DMA_TO_DEVICE);
357 dev_kfree_skb_any(skb);
358 iq_no = sc->iq_no;
359 octeon_free_soft_command(oct, sc);
360
361 if (octnet_iq_is_full(oct, iq_no))
362 return;
363
364 if (netif_queue_stopped(ndev))
365 netif_wake_queue(ndev);
366 }
367
368 static netdev_tx_t
lio_vf_rep_pkt_xmit(struct sk_buff * skb,struct net_device * ndev)369 lio_vf_rep_pkt_xmit(struct sk_buff *skb, struct net_device *ndev)
370 {
371 struct lio_vf_rep_desc *vf_rep = netdev_priv(ndev);
372 struct net_device *parent_ndev = vf_rep->parent_ndev;
373 struct octeon_device *oct = vf_rep->oct;
374 struct octeon_instr_pki_ih3 *pki_ih3;
375 struct octeon_soft_command *sc;
376 struct lio *parent_lio;
377 int status;
378
379 parent_lio = GET_LIO(parent_ndev);
380
381 if (!(atomic_read(&vf_rep->ifstate) & LIO_IFSTATE_RUNNING) ||
382 skb->len <= 0)
383 goto xmit_failed;
384
385 if (octnet_iq_is_full(vf_rep->oct, parent_lio->txq)) {
386 dev_err(&oct->pci_dev->dev, "VF rep: Device IQ full\n");
387 netif_stop_queue(ndev);
388 return NETDEV_TX_BUSY;
389 }
390
391 sc = (struct octeon_soft_command *)
392 octeon_alloc_soft_command(oct, 0, 16, 0);
393 if (!sc) {
394 dev_err(&oct->pci_dev->dev, "VF rep: Soft command alloc failed\n");
395 goto xmit_failed;
396 }
397
398 /* Multiple buffers are not used for vf_rep packets. */
399 if (skb_shinfo(skb)->nr_frags != 0) {
400 dev_err(&oct->pci_dev->dev, "VF rep: nr_frags != 0. Dropping packet\n");
401 octeon_free_soft_command(oct, sc);
402 goto xmit_failed;
403 }
404
405 sc->dmadptr = dma_map_single(&oct->pci_dev->dev,
406 skb->data, skb->len, DMA_TO_DEVICE);
407 if (dma_mapping_error(&oct->pci_dev->dev, sc->dmadptr)) {
408 dev_err(&oct->pci_dev->dev, "VF rep: DMA mapping failed\n");
409 octeon_free_soft_command(oct, sc);
410 goto xmit_failed;
411 }
412
413 sc->virtdptr = skb->data;
414 sc->datasize = skb->len;
415 sc->ctxptr = skb;
416 sc->iq_no = parent_lio->txq;
417
418 octeon_prepare_soft_command(oct, sc, OPCODE_NIC, OPCODE_NIC_VF_REP_PKT,
419 vf_rep->ifidx, 0, 0);
420 pki_ih3 = (struct octeon_instr_pki_ih3 *)&sc->cmd.cmd3.pki_ih3;
421 pki_ih3->tagtype = ORDERED_TAG;
422
423 sc->callback = lio_vf_rep_packet_sent_callback;
424 sc->callback_arg = sc;
425
426 status = octeon_send_soft_command(oct, sc);
427 if (status == IQ_SEND_FAILED) {
428 dma_unmap_single(&oct->pci_dev->dev, sc->dmadptr,
429 sc->datasize, DMA_TO_DEVICE);
430 octeon_free_soft_command(oct, sc);
431 goto xmit_failed;
432 }
433
434 if (status == IQ_SEND_STOP)
435 netif_stop_queue(ndev);
436
437 netif_trans_update(ndev);
438
439 return NETDEV_TX_OK;
440
441 xmit_failed:
442 dev_kfree_skb_any(skb);
443
444 return NETDEV_TX_OK;
445 }
446
lio_vf_get_port_parent_id(struct net_device * dev,struct netdev_phys_item_id * ppid)447 static int lio_vf_get_port_parent_id(struct net_device *dev,
448 struct netdev_phys_item_id *ppid)
449 {
450 struct lio_vf_rep_desc *vf_rep = netdev_priv(dev);
451 struct net_device *parent_ndev = vf_rep->parent_ndev;
452 struct lio *lio = GET_LIO(parent_ndev);
453
454 ppid->id_len = ETH_ALEN;
455 ether_addr_copy(ppid->id, (void *)&lio->linfo.hw_addr + 2);
456
457 return 0;
458 }
459
460 static void
lio_vf_rep_fetch_stats(struct work_struct * work)461 lio_vf_rep_fetch_stats(struct work_struct *work)
462 {
463 struct cavium_wk *wk = (struct cavium_wk *)work;
464 struct lio_vf_rep_desc *vf_rep = wk->ctxptr;
465 struct lio_vf_rep_stats stats;
466 struct lio_vf_rep_req rep_cfg;
467 struct octeon_device *oct;
468 int ret;
469
470 oct = vf_rep->oct;
471
472 memset(&rep_cfg, 0, sizeof(rep_cfg));
473 rep_cfg.req_type = LIO_VF_REP_REQ_STATS;
474 rep_cfg.ifidx = vf_rep->ifidx;
475
476 ret = lio_vf_rep_send_soft_command(oct, &rep_cfg, sizeof(rep_cfg),
477 &stats, sizeof(stats));
478
479 if (!ret) {
480 octeon_swap_8B_data((u64 *)&stats, (sizeof(stats) >> 3));
481 memcpy(&vf_rep->stats, &stats, sizeof(stats));
482 }
483
484 schedule_delayed_work(&vf_rep->stats_wk.work,
485 msecs_to_jiffies(LIO_VF_REP_STATS_POLL_TIME_MS));
486 }
487
488 int
lio_vf_rep_create(struct octeon_device * oct)489 lio_vf_rep_create(struct octeon_device *oct)
490 {
491 struct lio_vf_rep_desc *vf_rep;
492 struct net_device *ndev;
493 int i, num_vfs;
494
495 if (oct->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV)
496 return 0;
497
498 if (!oct->sriov_info.sriov_enabled)
499 return 0;
500
501 num_vfs = oct->sriov_info.num_vfs_alloced;
502
503 oct->vf_rep_list.num_vfs = 0;
504 for (i = 0; i < num_vfs; i++) {
505 ndev = alloc_etherdev(sizeof(struct lio_vf_rep_desc));
506
507 if (!ndev) {
508 dev_err(&oct->pci_dev->dev,
509 "VF rep device %d creation failed\n", i);
510 goto cleanup;
511 }
512
513 ndev->min_mtu = LIO_MIN_MTU_SIZE;
514 ndev->max_mtu = LIO_MAX_MTU_SIZE;
515 ndev->netdev_ops = &lio_vf_rep_ndev_ops;
516
517 vf_rep = netdev_priv(ndev);
518 memset(vf_rep, 0, sizeof(*vf_rep));
519
520 vf_rep->ndev = ndev;
521 vf_rep->oct = oct;
522 vf_rep->parent_ndev = oct->props[0].netdev;
523 vf_rep->ifidx = (oct->pf_num * 64) + i + 1;
524
525 eth_hw_addr_random(ndev);
526
527 if (register_netdev(ndev)) {
528 dev_err(&oct->pci_dev->dev, "VF rep nerdev registration failed\n");
529
530 free_netdev(ndev);
531 goto cleanup;
532 }
533
534 netif_carrier_off(ndev);
535
536 INIT_DELAYED_WORK(&vf_rep->stats_wk.work,
537 lio_vf_rep_fetch_stats);
538 vf_rep->stats_wk.ctxptr = (void *)vf_rep;
539 schedule_delayed_work(&vf_rep->stats_wk.work,
540 msecs_to_jiffies
541 (LIO_VF_REP_STATS_POLL_TIME_MS));
542 oct->vf_rep_list.num_vfs++;
543 oct->vf_rep_list.ndev[i] = ndev;
544 }
545
546 if (octeon_register_dispatch_fn(oct, OPCODE_NIC,
547 OPCODE_NIC_VF_REP_PKT,
548 lio_vf_rep_pkt_recv, oct)) {
549 dev_err(&oct->pci_dev->dev, "VF rep Dispatch func registration failed\n");
550
551 goto cleanup;
552 }
553
554 return 0;
555
556 cleanup:
557 for (i = 0; i < oct->vf_rep_list.num_vfs; i++) {
558 ndev = oct->vf_rep_list.ndev[i];
559 oct->vf_rep_list.ndev[i] = NULL;
560 if (ndev) {
561 vf_rep = netdev_priv(ndev);
562 cancel_delayed_work_sync
563 (&vf_rep->stats_wk.work);
564 unregister_netdev(ndev);
565 free_netdev(ndev);
566 }
567 }
568
569 oct->vf_rep_list.num_vfs = 0;
570
571 return -1;
572 }
573
574 void
lio_vf_rep_destroy(struct octeon_device * oct)575 lio_vf_rep_destroy(struct octeon_device *oct)
576 {
577 struct lio_vf_rep_desc *vf_rep;
578 struct net_device *ndev;
579 int i;
580
581 if (oct->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV)
582 return;
583
584 if (!oct->sriov_info.sriov_enabled)
585 return;
586
587 for (i = 0; i < oct->vf_rep_list.num_vfs; i++) {
588 ndev = oct->vf_rep_list.ndev[i];
589 oct->vf_rep_list.ndev[i] = NULL;
590 if (ndev) {
591 vf_rep = netdev_priv(ndev);
592 cancel_delayed_work_sync
593 (&vf_rep->stats_wk.work);
594 netif_tx_disable(ndev);
595 netif_carrier_off(ndev);
596
597 unregister_netdev(ndev);
598 free_netdev(ndev);
599 }
600 }
601
602 oct->vf_rep_list.num_vfs = 0;
603 }
604
605 static int
lio_vf_rep_netdev_event(struct notifier_block * nb,unsigned long event,void * ptr)606 lio_vf_rep_netdev_event(struct notifier_block *nb,
607 unsigned long event, void *ptr)
608 {
609 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
610 struct lio_vf_rep_desc *vf_rep;
611 struct lio_vf_rep_req rep_cfg;
612 struct octeon_device *oct;
613 int ret;
614
615 switch (event) {
616 case NETDEV_REGISTER:
617 case NETDEV_CHANGENAME:
618 break;
619
620 default:
621 return NOTIFY_DONE;
622 }
623
624 if (ndev->netdev_ops != &lio_vf_rep_ndev_ops)
625 return NOTIFY_DONE;
626
627 vf_rep = netdev_priv(ndev);
628 oct = vf_rep->oct;
629
630 if (strlen(ndev->name) > LIO_IF_NAME_SIZE) {
631 dev_err(&oct->pci_dev->dev,
632 "Device name change sync failed as the size is > %d\n",
633 LIO_IF_NAME_SIZE);
634 return NOTIFY_DONE;
635 }
636
637 memset(&rep_cfg, 0, sizeof(rep_cfg));
638 rep_cfg.req_type = LIO_VF_REP_REQ_DEVNAME;
639 rep_cfg.ifidx = vf_rep->ifidx;
640 strscpy(rep_cfg.rep_name.name, ndev->name,
641 sizeof(rep_cfg.rep_name.name));
642
643 ret = lio_vf_rep_send_soft_command(oct, &rep_cfg,
644 sizeof(rep_cfg), NULL, 0);
645 if (ret)
646 dev_err(&oct->pci_dev->dev,
647 "vf_rep netdev name change failed with err %d\n", ret);
648
649 return NOTIFY_DONE;
650 }
651
652 static struct notifier_block lio_vf_rep_netdev_notifier = {
653 .notifier_call = lio_vf_rep_netdev_event,
654 };
655
656 int
lio_vf_rep_modinit(void)657 lio_vf_rep_modinit(void)
658 {
659 if (register_netdevice_notifier(&lio_vf_rep_netdev_notifier)) {
660 pr_err("netdev notifier registration failed\n");
661 return -EFAULT;
662 }
663
664 return 0;
665 }
666
667 void
lio_vf_rep_modexit(void)668 lio_vf_rep_modexit(void)
669 {
670 if (unregister_netdevice_notifier(&lio_vf_rep_netdev_notifier))
671 pr_err("netdev notifier unregister failed\n");
672 }
673