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Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
[mirror_ubuntu-hirsute-kernel.git] / drivers / net / ethernet / mellanox / mlx4 / en_netdev.c
1 /*
2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 */
33
34 #include <linux/etherdevice.h>
35 #include <linux/tcp.h>
36 #include <linux/if_vlan.h>
37 #include <linux/delay.h>
38 #include <linux/slab.h>
39 #include <linux/hash.h>
40 #include <net/ip.h>
41 #include <net/busy_poll.h>
42
43 #include <linux/mlx4/driver.h>
44 #include <linux/mlx4/device.h>
45 #include <linux/mlx4/cmd.h>
46 #include <linux/mlx4/cq.h>
47
48 #include "mlx4_en.h"
49 #include "en_port.h"
50
51 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
52 {
53 struct mlx4_en_priv *priv = netdev_priv(dev);
54 int i;
55 unsigned int offset = 0;
56
57 if (up && up != MLX4_EN_NUM_UP)
58 return -EINVAL;
59
60 netdev_set_num_tc(dev, up);
61
62 /* Partition Tx queues evenly amongst UP's */
63 for (i = 0; i < up; i++) {
64 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
65 offset += priv->num_tx_rings_p_up;
66 }
67
68 return 0;
69 }
70
71 #ifdef CONFIG_NET_RX_BUSY_POLL
72 /* must be called with local_bh_disable()d */
73 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
74 {
75 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
76 struct net_device *dev = cq->dev;
77 struct mlx4_en_priv *priv = netdev_priv(dev);
78 struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
79 int done;
80
81 if (!priv->port_up)
82 return LL_FLUSH_FAILED;
83
84 if (!mlx4_en_cq_lock_poll(cq))
85 return LL_FLUSH_BUSY;
86
87 done = mlx4_en_process_rx_cq(dev, cq, 4);
88 if (likely(done))
89 rx_ring->cleaned += done;
90 else
91 rx_ring->misses++;
92
93 mlx4_en_cq_unlock_poll(cq);
94
95 return done;
96 }
97 #endif /* CONFIG_NET_RX_BUSY_POLL */
98
99 #ifdef CONFIG_RFS_ACCEL
100
101 struct mlx4_en_filter {
102 struct list_head next;
103 struct work_struct work;
104
105 u8 ip_proto;
106 __be32 src_ip;
107 __be32 dst_ip;
108 __be16 src_port;
109 __be16 dst_port;
110
111 int rxq_index;
112 struct mlx4_en_priv *priv;
113 u32 flow_id; /* RFS infrastructure id */
114 int id; /* mlx4_en driver id */
115 u64 reg_id; /* Flow steering API id */
116 u8 activated; /* Used to prevent expiry before filter
117 * is attached
118 */
119 struct hlist_node filter_chain;
120 };
121
122 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
123
124 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
125 {
126 switch (ip_proto) {
127 case IPPROTO_UDP:
128 return MLX4_NET_TRANS_RULE_ID_UDP;
129 case IPPROTO_TCP:
130 return MLX4_NET_TRANS_RULE_ID_TCP;
131 default:
132 return -EPROTONOSUPPORT;
133 }
134 };
135
136 static void mlx4_en_filter_work(struct work_struct *work)
137 {
138 struct mlx4_en_filter *filter = container_of(work,
139 struct mlx4_en_filter,
140 work);
141 struct mlx4_en_priv *priv = filter->priv;
142 struct mlx4_spec_list spec_tcp_udp = {
143 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
144 {
145 .tcp_udp = {
146 .dst_port = filter->dst_port,
147 .dst_port_msk = (__force __be16)-1,
148 .src_port = filter->src_port,
149 .src_port_msk = (__force __be16)-1,
150 },
151 },
152 };
153 struct mlx4_spec_list spec_ip = {
154 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
155 {
156 .ipv4 = {
157 .dst_ip = filter->dst_ip,
158 .dst_ip_msk = (__force __be32)-1,
159 .src_ip = filter->src_ip,
160 .src_ip_msk = (__force __be32)-1,
161 },
162 },
163 };
164 struct mlx4_spec_list spec_eth = {
165 .id = MLX4_NET_TRANS_RULE_ID_ETH,
166 };
167 struct mlx4_net_trans_rule rule = {
168 .list = LIST_HEAD_INIT(rule.list),
169 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
170 .exclusive = 1,
171 .allow_loopback = 1,
172 .promisc_mode = MLX4_FS_REGULAR,
173 .port = priv->port,
174 .priority = MLX4_DOMAIN_RFS,
175 };
176 int rc;
177 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
178
179 if (spec_tcp_udp.id < 0) {
180 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
181 filter->ip_proto);
182 goto ignore;
183 }
184 list_add_tail(&spec_eth.list, &rule.list);
185 list_add_tail(&spec_ip.list, &rule.list);
186 list_add_tail(&spec_tcp_udp.list, &rule.list);
187
188 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
189 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
190 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
191
192 filter->activated = 0;
193
194 if (filter->reg_id) {
195 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
196 if (rc && rc != -ENOENT)
197 en_err(priv, "Error detaching flow. rc = %d\n", rc);
198 }
199
200 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
201 if (rc)
202 en_err(priv, "Error attaching flow. err = %d\n", rc);
203
204 ignore:
205 mlx4_en_filter_rfs_expire(priv);
206
207 filter->activated = 1;
208 }
209
210 static inline struct hlist_head *
211 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
212 __be16 src_port, __be16 dst_port)
213 {
214 unsigned long l;
215 int bucket_idx;
216
217 l = (__force unsigned long)src_port |
218 ((__force unsigned long)dst_port << 2);
219 l ^= (__force unsigned long)(src_ip ^ dst_ip);
220
221 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
222
223 return &priv->filter_hash[bucket_idx];
224 }
225
226 static struct mlx4_en_filter *
227 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
228 __be32 dst_ip, u8 ip_proto, __be16 src_port,
229 __be16 dst_port, u32 flow_id)
230 {
231 struct mlx4_en_filter *filter = NULL;
232
233 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
234 if (!filter)
235 return NULL;
236
237 filter->priv = priv;
238 filter->rxq_index = rxq_index;
239 INIT_WORK(&filter->work, mlx4_en_filter_work);
240
241 filter->src_ip = src_ip;
242 filter->dst_ip = dst_ip;
243 filter->ip_proto = ip_proto;
244 filter->src_port = src_port;
245 filter->dst_port = dst_port;
246
247 filter->flow_id = flow_id;
248
249 filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
250
251 list_add_tail(&filter->next, &priv->filters);
252 hlist_add_head(&filter->filter_chain,
253 filter_hash_bucket(priv, src_ip, dst_ip, src_port,
254 dst_port));
255
256 return filter;
257 }
258
259 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
260 {
261 struct mlx4_en_priv *priv = filter->priv;
262 int rc;
263
264 list_del(&filter->next);
265
266 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
267 if (rc && rc != -ENOENT)
268 en_err(priv, "Error detaching flow. rc = %d\n", rc);
269
270 kfree(filter);
271 }
272
273 static inline struct mlx4_en_filter *
274 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
275 u8 ip_proto, __be16 src_port, __be16 dst_port)
276 {
277 struct mlx4_en_filter *filter;
278 struct mlx4_en_filter *ret = NULL;
279
280 hlist_for_each_entry(filter,
281 filter_hash_bucket(priv, src_ip, dst_ip,
282 src_port, dst_port),
283 filter_chain) {
284 if (filter->src_ip == src_ip &&
285 filter->dst_ip == dst_ip &&
286 filter->ip_proto == ip_proto &&
287 filter->src_port == src_port &&
288 filter->dst_port == dst_port) {
289 ret = filter;
290 break;
291 }
292 }
293
294 return ret;
295 }
296
297 static int
298 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
299 u16 rxq_index, u32 flow_id)
300 {
301 struct mlx4_en_priv *priv = netdev_priv(net_dev);
302 struct mlx4_en_filter *filter;
303 const struct iphdr *ip;
304 const __be16 *ports;
305 u8 ip_proto;
306 __be32 src_ip;
307 __be32 dst_ip;
308 __be16 src_port;
309 __be16 dst_port;
310 int nhoff = skb_network_offset(skb);
311 int ret = 0;
312
313 if (skb->protocol != htons(ETH_P_IP))
314 return -EPROTONOSUPPORT;
315
316 ip = (const struct iphdr *)(skb->data + nhoff);
317 if (ip_is_fragment(ip))
318 return -EPROTONOSUPPORT;
319
320 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
321 return -EPROTONOSUPPORT;
322 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
323
324 ip_proto = ip->protocol;
325 src_ip = ip->saddr;
326 dst_ip = ip->daddr;
327 src_port = ports[0];
328 dst_port = ports[1];
329
330 spin_lock_bh(&priv->filters_lock);
331 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
332 src_port, dst_port);
333 if (filter) {
334 if (filter->rxq_index == rxq_index)
335 goto out;
336
337 filter->rxq_index = rxq_index;
338 } else {
339 filter = mlx4_en_filter_alloc(priv, rxq_index,
340 src_ip, dst_ip, ip_proto,
341 src_port, dst_port, flow_id);
342 if (!filter) {
343 ret = -ENOMEM;
344 goto err;
345 }
346 }
347
348 queue_work(priv->mdev->workqueue, &filter->work);
349
350 out:
351 ret = filter->id;
352 err:
353 spin_unlock_bh(&priv->filters_lock);
354
355 return ret;
356 }
357
358 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
359 {
360 struct mlx4_en_filter *filter, *tmp;
361 LIST_HEAD(del_list);
362
363 spin_lock_bh(&priv->filters_lock);
364 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
365 list_move(&filter->next, &del_list);
366 hlist_del(&filter->filter_chain);
367 }
368 spin_unlock_bh(&priv->filters_lock);
369
370 list_for_each_entry_safe(filter, tmp, &del_list, next) {
371 cancel_work_sync(&filter->work);
372 mlx4_en_filter_free(filter);
373 }
374 }
375
376 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
377 {
378 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
379 LIST_HEAD(del_list);
380 int i = 0;
381
382 spin_lock_bh(&priv->filters_lock);
383 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
384 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
385 break;
386
387 if (filter->activated &&
388 !work_pending(&filter->work) &&
389 rps_may_expire_flow(priv->dev,
390 filter->rxq_index, filter->flow_id,
391 filter->id)) {
392 list_move(&filter->next, &del_list);
393 hlist_del(&filter->filter_chain);
394 } else
395 last_filter = filter;
396
397 i++;
398 }
399
400 if (last_filter && (&last_filter->next != priv->filters.next))
401 list_move(&priv->filters, &last_filter->next);
402
403 spin_unlock_bh(&priv->filters_lock);
404
405 list_for_each_entry_safe(filter, tmp, &del_list, next)
406 mlx4_en_filter_free(filter);
407 }
408 #endif
409
410 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
411 __be16 proto, u16 vid)
412 {
413 struct mlx4_en_priv *priv = netdev_priv(dev);
414 struct mlx4_en_dev *mdev = priv->mdev;
415 int err;
416 int idx;
417
418 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
419
420 set_bit(vid, priv->active_vlans);
421
422 /* Add VID to port VLAN filter */
423 mutex_lock(&mdev->state_lock);
424 if (mdev->device_up && priv->port_up) {
425 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
426 if (err)
427 en_err(priv, "Failed configuring VLAN filter\n");
428 }
429 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
430 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
431 mutex_unlock(&mdev->state_lock);
432
433 return 0;
434 }
435
436 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
437 __be16 proto, u16 vid)
438 {
439 struct mlx4_en_priv *priv = netdev_priv(dev);
440 struct mlx4_en_dev *mdev = priv->mdev;
441 int err;
442
443 en_dbg(HW, priv, "Killing VID:%d\n", vid);
444
445 clear_bit(vid, priv->active_vlans);
446
447 /* Remove VID from port VLAN filter */
448 mutex_lock(&mdev->state_lock);
449 mlx4_unregister_vlan(mdev->dev, priv->port, vid);
450
451 if (mdev->device_up && priv->port_up) {
452 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
453 if (err)
454 en_err(priv, "Failed configuring VLAN filter\n");
455 }
456 mutex_unlock(&mdev->state_lock);
457
458 return 0;
459 }
460
461 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
462 {
463 int i;
464 for (i = ETH_ALEN - 1; i >= 0; --i) {
465 dst_mac[i] = src_mac & 0xff;
466 src_mac >>= 8;
467 }
468 memset(&dst_mac[ETH_ALEN], 0, 2);
469 }
470
471
472 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
473 int qpn, u64 *reg_id)
474 {
475 int err;
476 struct mlx4_spec_list spec_eth_outer = { {NULL} };
477 struct mlx4_spec_list spec_vxlan = { {NULL} };
478 struct mlx4_spec_list spec_eth_inner = { {NULL} };
479
480 struct mlx4_net_trans_rule rule = {
481 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
482 .exclusive = 0,
483 .allow_loopback = 1,
484 .promisc_mode = MLX4_FS_REGULAR,
485 .priority = MLX4_DOMAIN_NIC,
486 };
487
488 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
489
490 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
491 return 0; /* do nothing */
492
493 rule.port = priv->port;
494 rule.qpn = qpn;
495 INIT_LIST_HEAD(&rule.list);
496
497 spec_eth_outer.id = MLX4_NET_TRANS_RULE_ID_ETH;
498 memcpy(spec_eth_outer.eth.dst_mac, addr, ETH_ALEN);
499 memcpy(spec_eth_outer.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
500
501 spec_vxlan.id = MLX4_NET_TRANS_RULE_ID_VXLAN; /* any vxlan header */
502 spec_eth_inner.id = MLX4_NET_TRANS_RULE_ID_ETH; /* any inner eth header */
503
504 list_add_tail(&spec_eth_outer.list, &rule.list);
505 list_add_tail(&spec_vxlan.list, &rule.list);
506 list_add_tail(&spec_eth_inner.list, &rule.list);
507
508 err = mlx4_flow_attach(priv->mdev->dev, &rule, reg_id);
509 if (err) {
510 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
511 return err;
512 }
513 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
514 return 0;
515 }
516
517
518 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
519 unsigned char *mac, int *qpn, u64 *reg_id)
520 {
521 struct mlx4_en_dev *mdev = priv->mdev;
522 struct mlx4_dev *dev = mdev->dev;
523 int err;
524
525 switch (dev->caps.steering_mode) {
526 case MLX4_STEERING_MODE_B0: {
527 struct mlx4_qp qp;
528 u8 gid[16] = {0};
529
530 qp.qpn = *qpn;
531 memcpy(&gid[10], mac, ETH_ALEN);
532 gid[5] = priv->port;
533
534 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
535 break;
536 }
537 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
538 struct mlx4_spec_list spec_eth = { {NULL} };
539 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
540
541 struct mlx4_net_trans_rule rule = {
542 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
543 .exclusive = 0,
544 .allow_loopback = 1,
545 .promisc_mode = MLX4_FS_REGULAR,
546 .priority = MLX4_DOMAIN_NIC,
547 };
548
549 rule.port = priv->port;
550 rule.qpn = *qpn;
551 INIT_LIST_HEAD(&rule.list);
552
553 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
554 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
555 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
556 list_add_tail(&spec_eth.list, &rule.list);
557
558 err = mlx4_flow_attach(dev, &rule, reg_id);
559 break;
560 }
561 default:
562 return -EINVAL;
563 }
564 if (err)
565 en_warn(priv, "Failed Attaching Unicast\n");
566
567 return err;
568 }
569
570 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
571 unsigned char *mac, int qpn, u64 reg_id)
572 {
573 struct mlx4_en_dev *mdev = priv->mdev;
574 struct mlx4_dev *dev = mdev->dev;
575
576 switch (dev->caps.steering_mode) {
577 case MLX4_STEERING_MODE_B0: {
578 struct mlx4_qp qp;
579 u8 gid[16] = {0};
580
581 qp.qpn = qpn;
582 memcpy(&gid[10], mac, ETH_ALEN);
583 gid[5] = priv->port;
584
585 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
586 break;
587 }
588 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
589 mlx4_flow_detach(dev, reg_id);
590 break;
591 }
592 default:
593 en_err(priv, "Invalid steering mode.\n");
594 }
595 }
596
597 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
598 {
599 struct mlx4_en_dev *mdev = priv->mdev;
600 struct mlx4_dev *dev = mdev->dev;
601 struct mlx4_mac_entry *entry;
602 int index = 0;
603 int err = 0;
604 u64 reg_id;
605 int *qpn = &priv->base_qpn;
606 u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
607
608 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
609 priv->dev->dev_addr);
610 index = mlx4_register_mac(dev, priv->port, mac);
611 if (index < 0) {
612 err = index;
613 en_err(priv, "Failed adding MAC: %pM\n",
614 priv->dev->dev_addr);
615 return err;
616 }
617
618 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
619 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
620 *qpn = base_qpn + index;
621 return 0;
622 }
623
624 err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
625 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
626 if (err) {
627 en_err(priv, "Failed to reserve qp for mac registration\n");
628 goto qp_err;
629 }
630
631 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
632 if (err)
633 goto steer_err;
634
635 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
636 &priv->tunnel_reg_id);
637 if (err)
638 goto tunnel_err;
639
640 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
641 if (!entry) {
642 err = -ENOMEM;
643 goto alloc_err;
644 }
645 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
646 entry->reg_id = reg_id;
647
648 hlist_add_head_rcu(&entry->hlist,
649 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
650
651 return 0;
652
653 alloc_err:
654 if (priv->tunnel_reg_id)
655 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
656 tunnel_err:
657 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
658
659 steer_err:
660 mlx4_qp_release_range(dev, *qpn, 1);
661
662 qp_err:
663 mlx4_unregister_mac(dev, priv->port, mac);
664 return err;
665 }
666
667 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
668 {
669 struct mlx4_en_dev *mdev = priv->mdev;
670 struct mlx4_dev *dev = mdev->dev;
671 int qpn = priv->base_qpn;
672 u64 mac;
673
674 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
675 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
676 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
677 priv->dev->dev_addr);
678 mlx4_unregister_mac(dev, priv->port, mac);
679 } else {
680 struct mlx4_mac_entry *entry;
681 struct hlist_node *tmp;
682 struct hlist_head *bucket;
683 unsigned int i;
684
685 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
686 bucket = &priv->mac_hash[i];
687 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
688 mac = mlx4_en_mac_to_u64(entry->mac);
689 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
690 entry->mac);
691 mlx4_en_uc_steer_release(priv, entry->mac,
692 qpn, entry->reg_id);
693
694 mlx4_unregister_mac(dev, priv->port, mac);
695 hlist_del_rcu(&entry->hlist);
696 kfree_rcu(entry, rcu);
697 }
698 }
699
700 if (priv->tunnel_reg_id) {
701 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
702 priv->tunnel_reg_id = 0;
703 }
704
705 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
706 priv->port, qpn);
707 mlx4_qp_release_range(dev, qpn, 1);
708 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
709 }
710 }
711
712 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
713 unsigned char *new_mac, unsigned char *prev_mac)
714 {
715 struct mlx4_en_dev *mdev = priv->mdev;
716 struct mlx4_dev *dev = mdev->dev;
717 int err = 0;
718 u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac);
719
720 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
721 struct hlist_head *bucket;
722 unsigned int mac_hash;
723 struct mlx4_mac_entry *entry;
724 struct hlist_node *tmp;
725 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac);
726
727 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
728 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
729 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
730 mlx4_en_uc_steer_release(priv, entry->mac,
731 qpn, entry->reg_id);
732 mlx4_unregister_mac(dev, priv->port,
733 prev_mac_u64);
734 hlist_del_rcu(&entry->hlist);
735 synchronize_rcu();
736 memcpy(entry->mac, new_mac, ETH_ALEN);
737 entry->reg_id = 0;
738 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
739 hlist_add_head_rcu(&entry->hlist,
740 &priv->mac_hash[mac_hash]);
741 mlx4_register_mac(dev, priv->port, new_mac_u64);
742 err = mlx4_en_uc_steer_add(priv, new_mac,
743 &qpn,
744 &entry->reg_id);
745 return err;
746 }
747 }
748 return -EINVAL;
749 }
750
751 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
752 }
753
754 u64 mlx4_en_mac_to_u64(u8 *addr)
755 {
756 u64 mac = 0;
757 int i;
758
759 for (i = 0; i < ETH_ALEN; i++) {
760 mac <<= 8;
761 mac |= addr[i];
762 }
763 return mac;
764 }
765
766 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
767 {
768 int err = 0;
769
770 if (priv->port_up) {
771 /* Remove old MAC and insert the new one */
772 err = mlx4_en_replace_mac(priv, priv->base_qpn,
773 priv->dev->dev_addr, priv->prev_mac);
774 if (err)
775 en_err(priv, "Failed changing HW MAC address\n");
776 memcpy(priv->prev_mac, priv->dev->dev_addr,
777 sizeof(priv->prev_mac));
778 } else
779 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
780
781 return err;
782 }
783
784 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
785 {
786 struct mlx4_en_priv *priv = netdev_priv(dev);
787 struct mlx4_en_dev *mdev = priv->mdev;
788 struct sockaddr *saddr = addr;
789 int err;
790
791 if (!is_valid_ether_addr(saddr->sa_data))
792 return -EADDRNOTAVAIL;
793
794 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
795
796 mutex_lock(&mdev->state_lock);
797 err = mlx4_en_do_set_mac(priv);
798 mutex_unlock(&mdev->state_lock);
799
800 return err;
801 }
802
803 static void mlx4_en_clear_list(struct net_device *dev)
804 {
805 struct mlx4_en_priv *priv = netdev_priv(dev);
806 struct mlx4_en_mc_list *tmp, *mc_to_del;
807
808 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
809 list_del(&mc_to_del->list);
810 kfree(mc_to_del);
811 }
812 }
813
814 static void mlx4_en_cache_mclist(struct net_device *dev)
815 {
816 struct mlx4_en_priv *priv = netdev_priv(dev);
817 struct netdev_hw_addr *ha;
818 struct mlx4_en_mc_list *tmp;
819
820 mlx4_en_clear_list(dev);
821 netdev_for_each_mc_addr(ha, dev) {
822 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
823 if (!tmp) {
824 mlx4_en_clear_list(dev);
825 return;
826 }
827 memcpy(tmp->addr, ha->addr, ETH_ALEN);
828 list_add_tail(&tmp->list, &priv->mc_list);
829 }
830 }
831
832 static void update_mclist_flags(struct mlx4_en_priv *priv,
833 struct list_head *dst,
834 struct list_head *src)
835 {
836 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
837 bool found;
838
839 /* Find all the entries that should be removed from dst,
840 * These are the entries that are not found in src
841 */
842 list_for_each_entry(dst_tmp, dst, list) {
843 found = false;
844 list_for_each_entry(src_tmp, src, list) {
845 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
846 found = true;
847 break;
848 }
849 }
850 if (!found)
851 dst_tmp->action = MCLIST_REM;
852 }
853
854 /* Add entries that exist in src but not in dst
855 * mark them as need to add
856 */
857 list_for_each_entry(src_tmp, src, list) {
858 found = false;
859 list_for_each_entry(dst_tmp, dst, list) {
860 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
861 dst_tmp->action = MCLIST_NONE;
862 found = true;
863 break;
864 }
865 }
866 if (!found) {
867 new_mc = kmemdup(src_tmp,
868 sizeof(struct mlx4_en_mc_list),
869 GFP_KERNEL);
870 if (!new_mc)
871 return;
872
873 new_mc->action = MCLIST_ADD;
874 list_add_tail(&new_mc->list, dst);
875 }
876 }
877 }
878
879 static void mlx4_en_set_rx_mode(struct net_device *dev)
880 {
881 struct mlx4_en_priv *priv = netdev_priv(dev);
882
883 if (!priv->port_up)
884 return;
885
886 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
887 }
888
889 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
890 struct mlx4_en_dev *mdev)
891 {
892 int err = 0;
893
894 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
895 if (netif_msg_rx_status(priv))
896 en_warn(priv, "Entering promiscuous mode\n");
897 priv->flags |= MLX4_EN_FLAG_PROMISC;
898
899 /* Enable promiscouos mode */
900 switch (mdev->dev->caps.steering_mode) {
901 case MLX4_STEERING_MODE_DEVICE_MANAGED:
902 err = mlx4_flow_steer_promisc_add(mdev->dev,
903 priv->port,
904 priv->base_qpn,
905 MLX4_FS_ALL_DEFAULT);
906 if (err)
907 en_err(priv, "Failed enabling promiscuous mode\n");
908 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
909 break;
910
911 case MLX4_STEERING_MODE_B0:
912 err = mlx4_unicast_promisc_add(mdev->dev,
913 priv->base_qpn,
914 priv->port);
915 if (err)
916 en_err(priv, "Failed enabling unicast promiscuous mode\n");
917
918 /* Add the default qp number as multicast
919 * promisc
920 */
921 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
922 err = mlx4_multicast_promisc_add(mdev->dev,
923 priv->base_qpn,
924 priv->port);
925 if (err)
926 en_err(priv, "Failed enabling multicast promiscuous mode\n");
927 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
928 }
929 break;
930
931 case MLX4_STEERING_MODE_A0:
932 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
933 priv->port,
934 priv->base_qpn,
935 1);
936 if (err)
937 en_err(priv, "Failed enabling promiscuous mode\n");
938 break;
939 }
940
941 /* Disable port multicast filter (unconditionally) */
942 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
943 0, MLX4_MCAST_DISABLE);
944 if (err)
945 en_err(priv, "Failed disabling multicast filter\n");
946
947 /* Disable port VLAN filter */
948 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
949 if (err)
950 en_err(priv, "Failed disabling VLAN filter\n");
951 }
952 }
953
954 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
955 struct mlx4_en_dev *mdev)
956 {
957 int err = 0;
958
959 if (netif_msg_rx_status(priv))
960 en_warn(priv, "Leaving promiscuous mode\n");
961 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
962
963 /* Disable promiscouos mode */
964 switch (mdev->dev->caps.steering_mode) {
965 case MLX4_STEERING_MODE_DEVICE_MANAGED:
966 err = mlx4_flow_steer_promisc_remove(mdev->dev,
967 priv->port,
968 MLX4_FS_ALL_DEFAULT);
969 if (err)
970 en_err(priv, "Failed disabling promiscuous mode\n");
971 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
972 break;
973
974 case MLX4_STEERING_MODE_B0:
975 err = mlx4_unicast_promisc_remove(mdev->dev,
976 priv->base_qpn,
977 priv->port);
978 if (err)
979 en_err(priv, "Failed disabling unicast promiscuous mode\n");
980 /* Disable Multicast promisc */
981 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
982 err = mlx4_multicast_promisc_remove(mdev->dev,
983 priv->base_qpn,
984 priv->port);
985 if (err)
986 en_err(priv, "Failed disabling multicast promiscuous mode\n");
987 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
988 }
989 break;
990
991 case MLX4_STEERING_MODE_A0:
992 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
993 priv->port,
994 priv->base_qpn, 0);
995 if (err)
996 en_err(priv, "Failed disabling promiscuous mode\n");
997 break;
998 }
999
1000 /* Enable port VLAN filter */
1001 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
1002 if (err)
1003 en_err(priv, "Failed enabling VLAN filter\n");
1004 }
1005
1006 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
1007 struct net_device *dev,
1008 struct mlx4_en_dev *mdev)
1009 {
1010 struct mlx4_en_mc_list *mclist, *tmp;
1011 u64 mcast_addr = 0;
1012 u8 mc_list[16] = {0};
1013 int err = 0;
1014
1015 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
1016 if (dev->flags & IFF_ALLMULTI) {
1017 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1018 0, MLX4_MCAST_DISABLE);
1019 if (err)
1020 en_err(priv, "Failed disabling multicast filter\n");
1021
1022 /* Add the default qp number as multicast promisc */
1023 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1024 switch (mdev->dev->caps.steering_mode) {
1025 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1026 err = mlx4_flow_steer_promisc_add(mdev->dev,
1027 priv->port,
1028 priv->base_qpn,
1029 MLX4_FS_MC_DEFAULT);
1030 break;
1031
1032 case MLX4_STEERING_MODE_B0:
1033 err = mlx4_multicast_promisc_add(mdev->dev,
1034 priv->base_qpn,
1035 priv->port);
1036 break;
1037
1038 case MLX4_STEERING_MODE_A0:
1039 break;
1040 }
1041 if (err)
1042 en_err(priv, "Failed entering multicast promisc mode\n");
1043 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1044 }
1045 } else {
1046 /* Disable Multicast promisc */
1047 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1048 switch (mdev->dev->caps.steering_mode) {
1049 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1050 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1051 priv->port,
1052 MLX4_FS_MC_DEFAULT);
1053 break;
1054
1055 case MLX4_STEERING_MODE_B0:
1056 err = mlx4_multicast_promisc_remove(mdev->dev,
1057 priv->base_qpn,
1058 priv->port);
1059 break;
1060
1061 case MLX4_STEERING_MODE_A0:
1062 break;
1063 }
1064 if (err)
1065 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1066 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1067 }
1068
1069 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1070 0, MLX4_MCAST_DISABLE);
1071 if (err)
1072 en_err(priv, "Failed disabling multicast filter\n");
1073
1074 /* Flush mcast filter and init it with broadcast address */
1075 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1076 1, MLX4_MCAST_CONFIG);
1077
1078 /* Update multicast list - we cache all addresses so they won't
1079 * change while HW is updated holding the command semaphor */
1080 netif_addr_lock_bh(dev);
1081 mlx4_en_cache_mclist(dev);
1082 netif_addr_unlock_bh(dev);
1083 list_for_each_entry(mclist, &priv->mc_list, list) {
1084 mcast_addr = mlx4_en_mac_to_u64(mclist->addr);
1085 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1086 mcast_addr, 0, MLX4_MCAST_CONFIG);
1087 }
1088 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1089 0, MLX4_MCAST_ENABLE);
1090 if (err)
1091 en_err(priv, "Failed enabling multicast filter\n");
1092
1093 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1094 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1095 if (mclist->action == MCLIST_REM) {
1096 /* detach this address and delete from list */
1097 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1098 mc_list[5] = priv->port;
1099 err = mlx4_multicast_detach(mdev->dev,
1100 &priv->rss_map.indir_qp,
1101 mc_list,
1102 MLX4_PROT_ETH,
1103 mclist->reg_id);
1104 if (err)
1105 en_err(priv, "Fail to detach multicast address\n");
1106
1107 if (mclist->tunnel_reg_id) {
1108 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1109 if (err)
1110 en_err(priv, "Failed to detach multicast address\n");
1111 }
1112
1113 /* remove from list */
1114 list_del(&mclist->list);
1115 kfree(mclist);
1116 } else if (mclist->action == MCLIST_ADD) {
1117 /* attach the address */
1118 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1119 /* needed for B0 steering support */
1120 mc_list[5] = priv->port;
1121 err = mlx4_multicast_attach(mdev->dev,
1122 &priv->rss_map.indir_qp,
1123 mc_list,
1124 priv->port, 0,
1125 MLX4_PROT_ETH,
1126 &mclist->reg_id);
1127 if (err)
1128 en_err(priv, "Fail to attach multicast address\n");
1129
1130 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1131 &mclist->tunnel_reg_id);
1132 if (err)
1133 en_err(priv, "Failed to attach multicast address\n");
1134 }
1135 }
1136 }
1137 }
1138
1139 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1140 struct net_device *dev,
1141 struct mlx4_en_dev *mdev)
1142 {
1143 struct netdev_hw_addr *ha;
1144 struct mlx4_mac_entry *entry;
1145 struct hlist_node *tmp;
1146 bool found;
1147 u64 mac;
1148 int err = 0;
1149 struct hlist_head *bucket;
1150 unsigned int i;
1151 int removed = 0;
1152 u32 prev_flags;
1153
1154 /* Note that we do not need to protect our mac_hash traversal with rcu,
1155 * since all modification code is protected by mdev->state_lock
1156 */
1157
1158 /* find what to remove */
1159 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1160 bucket = &priv->mac_hash[i];
1161 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1162 found = false;
1163 netdev_for_each_uc_addr(ha, dev) {
1164 if (ether_addr_equal_64bits(entry->mac,
1165 ha->addr)) {
1166 found = true;
1167 break;
1168 }
1169 }
1170
1171 /* MAC address of the port is not in uc list */
1172 if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1173 found = true;
1174
1175 if (!found) {
1176 mac = mlx4_en_mac_to_u64(entry->mac);
1177 mlx4_en_uc_steer_release(priv, entry->mac,
1178 priv->base_qpn,
1179 entry->reg_id);
1180 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1181
1182 hlist_del_rcu(&entry->hlist);
1183 kfree_rcu(entry, rcu);
1184 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1185 entry->mac, priv->port);
1186 ++removed;
1187 }
1188 }
1189 }
1190
1191 /* if we didn't remove anything, there is no use in trying to add
1192 * again once we are in a forced promisc mode state
1193 */
1194 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1195 return;
1196
1197 prev_flags = priv->flags;
1198 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1199
1200 /* find what to add */
1201 netdev_for_each_uc_addr(ha, dev) {
1202 found = false;
1203 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1204 hlist_for_each_entry(entry, bucket, hlist) {
1205 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1206 found = true;
1207 break;
1208 }
1209 }
1210
1211 if (!found) {
1212 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1213 if (!entry) {
1214 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1215 ha->addr, priv->port);
1216 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1217 break;
1218 }
1219 mac = mlx4_en_mac_to_u64(ha->addr);
1220 memcpy(entry->mac, ha->addr, ETH_ALEN);
1221 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1222 if (err < 0) {
1223 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1224 ha->addr, priv->port, err);
1225 kfree(entry);
1226 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1227 break;
1228 }
1229 err = mlx4_en_uc_steer_add(priv, ha->addr,
1230 &priv->base_qpn,
1231 &entry->reg_id);
1232 if (err) {
1233 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1234 ha->addr, priv->port, err);
1235 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1236 kfree(entry);
1237 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1238 break;
1239 } else {
1240 unsigned int mac_hash;
1241 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1242 ha->addr, priv->port);
1243 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1244 bucket = &priv->mac_hash[mac_hash];
1245 hlist_add_head_rcu(&entry->hlist, bucket);
1246 }
1247 }
1248 }
1249
1250 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1251 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1252 priv->port);
1253 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1254 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1255 priv->port);
1256 }
1257 }
1258
1259 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1260 {
1261 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1262 rx_mode_task);
1263 struct mlx4_en_dev *mdev = priv->mdev;
1264 struct net_device *dev = priv->dev;
1265
1266 mutex_lock(&mdev->state_lock);
1267 if (!mdev->device_up) {
1268 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1269 goto out;
1270 }
1271 if (!priv->port_up) {
1272 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1273 goto out;
1274 }
1275
1276 if (!netif_carrier_ok(dev)) {
1277 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1278 if (priv->port_state.link_state) {
1279 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1280 netif_carrier_on(dev);
1281 en_dbg(LINK, priv, "Link Up\n");
1282 }
1283 }
1284 }
1285
1286 if (dev->priv_flags & IFF_UNICAST_FLT)
1287 mlx4_en_do_uc_filter(priv, dev, mdev);
1288
1289 /* Promsicuous mode: disable all filters */
1290 if ((dev->flags & IFF_PROMISC) ||
1291 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1292 mlx4_en_set_promisc_mode(priv, mdev);
1293 goto out;
1294 }
1295
1296 /* Not in promiscuous mode */
1297 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1298 mlx4_en_clear_promisc_mode(priv, mdev);
1299
1300 mlx4_en_do_multicast(priv, dev, mdev);
1301 out:
1302 mutex_unlock(&mdev->state_lock);
1303 }
1304
1305 #ifdef CONFIG_NET_POLL_CONTROLLER
1306 static void mlx4_en_netpoll(struct net_device *dev)
1307 {
1308 struct mlx4_en_priv *priv = netdev_priv(dev);
1309 struct mlx4_en_cq *cq;
1310 unsigned long flags;
1311 int i;
1312
1313 for (i = 0; i < priv->rx_ring_num; i++) {
1314 cq = priv->rx_cq[i];
1315 spin_lock_irqsave(&cq->lock, flags);
1316 napi_synchronize(&cq->napi);
1317 mlx4_en_process_rx_cq(dev, cq, 0);
1318 spin_unlock_irqrestore(&cq->lock, flags);
1319 }
1320 }
1321 #endif
1322
1323 static void mlx4_en_tx_timeout(struct net_device *dev)
1324 {
1325 struct mlx4_en_priv *priv = netdev_priv(dev);
1326 struct mlx4_en_dev *mdev = priv->mdev;
1327 int i;
1328
1329 if (netif_msg_timer(priv))
1330 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1331
1332 for (i = 0; i < priv->tx_ring_num; i++) {
1333 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1334 continue;
1335 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1336 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1337 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1338 }
1339
1340 priv->port_stats.tx_timeout++;
1341 en_dbg(DRV, priv, "Scheduling watchdog\n");
1342 queue_work(mdev->workqueue, &priv->watchdog_task);
1343 }
1344
1345
1346 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1347 {
1348 struct mlx4_en_priv *priv = netdev_priv(dev);
1349
1350 spin_lock_bh(&priv->stats_lock);
1351 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1352 spin_unlock_bh(&priv->stats_lock);
1353
1354 return &priv->ret_stats;
1355 }
1356
1357 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1358 {
1359 struct mlx4_en_cq *cq;
1360 int i;
1361
1362 /* If we haven't received a specific coalescing setting
1363 * (module param), we set the moderation parameters as follows:
1364 * - moder_cnt is set to the number of mtu sized packets to
1365 * satisfy our coalescing target.
1366 * - moder_time is set to a fixed value.
1367 */
1368 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1369 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1370 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1371 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1372 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1373 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1374
1375 /* Setup cq moderation params */
1376 for (i = 0; i < priv->rx_ring_num; i++) {
1377 cq = priv->rx_cq[i];
1378 cq->moder_cnt = priv->rx_frames;
1379 cq->moder_time = priv->rx_usecs;
1380 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1381 priv->last_moder_packets[i] = 0;
1382 priv->last_moder_bytes[i] = 0;
1383 }
1384
1385 for (i = 0; i < priv->tx_ring_num; i++) {
1386 cq = priv->tx_cq[i];
1387 cq->moder_cnt = priv->tx_frames;
1388 cq->moder_time = priv->tx_usecs;
1389 }
1390
1391 /* Reset auto-moderation params */
1392 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1393 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1394 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1395 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1396 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1397 priv->adaptive_rx_coal = 1;
1398 priv->last_moder_jiffies = 0;
1399 priv->last_moder_tx_packets = 0;
1400 }
1401
1402 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1403 {
1404 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1405 struct mlx4_en_cq *cq;
1406 unsigned long packets;
1407 unsigned long rate;
1408 unsigned long avg_pkt_size;
1409 unsigned long rx_packets;
1410 unsigned long rx_bytes;
1411 unsigned long rx_pkt_diff;
1412 int moder_time;
1413 int ring, err;
1414
1415 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1416 return;
1417
1418 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1419 spin_lock_bh(&priv->stats_lock);
1420 rx_packets = priv->rx_ring[ring]->packets;
1421 rx_bytes = priv->rx_ring[ring]->bytes;
1422 spin_unlock_bh(&priv->stats_lock);
1423
1424 rx_pkt_diff = ((unsigned long) (rx_packets -
1425 priv->last_moder_packets[ring]));
1426 packets = rx_pkt_diff;
1427 rate = packets * HZ / period;
1428 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1429 priv->last_moder_bytes[ring])) / packets : 0;
1430
1431 /* Apply auto-moderation only when packet rate
1432 * exceeds a rate that it matters */
1433 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1434 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1435 if (rate < priv->pkt_rate_low)
1436 moder_time = priv->rx_usecs_low;
1437 else if (rate > priv->pkt_rate_high)
1438 moder_time = priv->rx_usecs_high;
1439 else
1440 moder_time = (rate - priv->pkt_rate_low) *
1441 (priv->rx_usecs_high - priv->rx_usecs_low) /
1442 (priv->pkt_rate_high - priv->pkt_rate_low) +
1443 priv->rx_usecs_low;
1444 } else {
1445 moder_time = priv->rx_usecs_low;
1446 }
1447
1448 if (moder_time != priv->last_moder_time[ring]) {
1449 priv->last_moder_time[ring] = moder_time;
1450 cq = priv->rx_cq[ring];
1451 cq->moder_time = moder_time;
1452 cq->moder_cnt = priv->rx_frames;
1453 err = mlx4_en_set_cq_moder(priv, cq);
1454 if (err)
1455 en_err(priv, "Failed modifying moderation for cq:%d\n",
1456 ring);
1457 }
1458 priv->last_moder_packets[ring] = rx_packets;
1459 priv->last_moder_bytes[ring] = rx_bytes;
1460 }
1461
1462 priv->last_moder_jiffies = jiffies;
1463 }
1464
1465 static void mlx4_en_do_get_stats(struct work_struct *work)
1466 {
1467 struct delayed_work *delay = to_delayed_work(work);
1468 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1469 stats_task);
1470 struct mlx4_en_dev *mdev = priv->mdev;
1471 int err;
1472
1473 mutex_lock(&mdev->state_lock);
1474 if (mdev->device_up) {
1475 if (priv->port_up) {
1476 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1477 if (err)
1478 en_dbg(HW, priv, "Could not update stats\n");
1479
1480 mlx4_en_auto_moderation(priv);
1481 }
1482
1483 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1484 }
1485 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1486 mlx4_en_do_set_mac(priv);
1487 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1488 }
1489 mutex_unlock(&mdev->state_lock);
1490 }
1491
1492 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1493 * periodically
1494 */
1495 static void mlx4_en_service_task(struct work_struct *work)
1496 {
1497 struct delayed_work *delay = to_delayed_work(work);
1498 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1499 service_task);
1500 struct mlx4_en_dev *mdev = priv->mdev;
1501
1502 mutex_lock(&mdev->state_lock);
1503 if (mdev->device_up) {
1504 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1505 mlx4_en_ptp_overflow_check(mdev);
1506
1507 queue_delayed_work(mdev->workqueue, &priv->service_task,
1508 SERVICE_TASK_DELAY);
1509 }
1510 mutex_unlock(&mdev->state_lock);
1511 }
1512
1513 static void mlx4_en_linkstate(struct work_struct *work)
1514 {
1515 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1516 linkstate_task);
1517 struct mlx4_en_dev *mdev = priv->mdev;
1518 int linkstate = priv->link_state;
1519
1520 mutex_lock(&mdev->state_lock);
1521 /* If observable port state changed set carrier state and
1522 * report to system log */
1523 if (priv->last_link_state != linkstate) {
1524 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1525 en_info(priv, "Link Down\n");
1526 netif_carrier_off(priv->dev);
1527 } else {
1528 en_info(priv, "Link Up\n");
1529 netif_carrier_on(priv->dev);
1530 }
1531 }
1532 priv->last_link_state = linkstate;
1533 mutex_unlock(&mdev->state_lock);
1534 }
1535
1536
1537 int mlx4_en_start_port(struct net_device *dev)
1538 {
1539 struct mlx4_en_priv *priv = netdev_priv(dev);
1540 struct mlx4_en_dev *mdev = priv->mdev;
1541 struct mlx4_en_cq *cq;
1542 struct mlx4_en_tx_ring *tx_ring;
1543 int rx_index = 0;
1544 int tx_index = 0;
1545 int err = 0;
1546 int i;
1547 int j;
1548 u8 mc_list[16] = {0};
1549
1550 if (priv->port_up) {
1551 en_dbg(DRV, priv, "start port called while port already up\n");
1552 return 0;
1553 }
1554
1555 INIT_LIST_HEAD(&priv->mc_list);
1556 INIT_LIST_HEAD(&priv->curr_list);
1557 INIT_LIST_HEAD(&priv->ethtool_list);
1558 memset(&priv->ethtool_rules[0], 0,
1559 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1560
1561 /* Calculate Rx buf size */
1562 dev->mtu = min(dev->mtu, priv->max_mtu);
1563 mlx4_en_calc_rx_buf(dev);
1564 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1565
1566 /* Configure rx cq's and rings */
1567 err = mlx4_en_activate_rx_rings(priv);
1568 if (err) {
1569 en_err(priv, "Failed to activate RX rings\n");
1570 return err;
1571 }
1572 for (i = 0; i < priv->rx_ring_num; i++) {
1573 cq = priv->rx_cq[i];
1574
1575 mlx4_en_cq_init_lock(cq);
1576
1577 err = mlx4_en_activate_cq(priv, cq, i);
1578 if (err) {
1579 en_err(priv, "Failed activating Rx CQ\n");
1580 goto cq_err;
1581 }
1582 for (j = 0; j < cq->size; j++)
1583 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1584 err = mlx4_en_set_cq_moder(priv, cq);
1585 if (err) {
1586 en_err(priv, "Failed setting cq moderation parameters");
1587 mlx4_en_deactivate_cq(priv, cq);
1588 goto cq_err;
1589 }
1590 mlx4_en_arm_cq(priv, cq);
1591 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1592 ++rx_index;
1593 }
1594
1595 /* Set qp number */
1596 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1597 err = mlx4_en_get_qp(priv);
1598 if (err) {
1599 en_err(priv, "Failed getting eth qp\n");
1600 goto cq_err;
1601 }
1602 mdev->mac_removed[priv->port] = 0;
1603
1604 err = mlx4_en_config_rss_steer(priv);
1605 if (err) {
1606 en_err(priv, "Failed configuring rss steering\n");
1607 goto mac_err;
1608 }
1609
1610 err = mlx4_en_create_drop_qp(priv);
1611 if (err)
1612 goto rss_err;
1613
1614 /* Configure tx cq's and rings */
1615 for (i = 0; i < priv->tx_ring_num; i++) {
1616 /* Configure cq */
1617 cq = priv->tx_cq[i];
1618 err = mlx4_en_activate_cq(priv, cq, i);
1619 if (err) {
1620 en_err(priv, "Failed allocating Tx CQ\n");
1621 goto tx_err;
1622 }
1623 err = mlx4_en_set_cq_moder(priv, cq);
1624 if (err) {
1625 en_err(priv, "Failed setting cq moderation parameters");
1626 mlx4_en_deactivate_cq(priv, cq);
1627 goto tx_err;
1628 }
1629 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1630 cq->buf->wqe_index = cpu_to_be16(0xffff);
1631
1632 /* Configure ring */
1633 tx_ring = priv->tx_ring[i];
1634 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1635 i / priv->num_tx_rings_p_up);
1636 if (err) {
1637 en_err(priv, "Failed allocating Tx ring\n");
1638 mlx4_en_deactivate_cq(priv, cq);
1639 goto tx_err;
1640 }
1641 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1642
1643 /* Arm CQ for TX completions */
1644 mlx4_en_arm_cq(priv, cq);
1645
1646 /* Set initial ownership of all Tx TXBBs to SW (1) */
1647 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1648 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1649 ++tx_index;
1650 }
1651
1652 /* Configure port */
1653 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1654 priv->rx_skb_size + ETH_FCS_LEN,
1655 priv->prof->tx_pause,
1656 priv->prof->tx_ppp,
1657 priv->prof->rx_pause,
1658 priv->prof->rx_ppp);
1659 if (err) {
1660 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1661 priv->port, err);
1662 goto tx_err;
1663 }
1664 /* Set default qp number */
1665 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1666 if (err) {
1667 en_err(priv, "Failed setting default qp numbers\n");
1668 goto tx_err;
1669 }
1670
1671 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1672 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC);
1673 if (err) {
1674 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1675 err);
1676 goto tx_err;
1677 }
1678 }
1679
1680 /* Init port */
1681 en_dbg(HW, priv, "Initializing port\n");
1682 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1683 if (err) {
1684 en_err(priv, "Failed Initializing port\n");
1685 goto tx_err;
1686 }
1687
1688 /* Attach rx QP to bradcast address */
1689 memset(&mc_list[10], 0xff, ETH_ALEN);
1690 mc_list[5] = priv->port; /* needed for B0 steering support */
1691 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1692 priv->port, 0, MLX4_PROT_ETH,
1693 &priv->broadcast_id))
1694 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1695
1696 /* Must redo promiscuous mode setup. */
1697 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1698
1699 /* Schedule multicast task to populate multicast list */
1700 queue_work(mdev->workqueue, &priv->rx_mode_task);
1701
1702 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1703
1704 priv->port_up = true;
1705 netif_tx_start_all_queues(dev);
1706 netif_device_attach(dev);
1707
1708 return 0;
1709
1710 tx_err:
1711 while (tx_index--) {
1712 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1713 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1714 }
1715 mlx4_en_destroy_drop_qp(priv);
1716 rss_err:
1717 mlx4_en_release_rss_steer(priv);
1718 mac_err:
1719 mlx4_en_put_qp(priv);
1720 cq_err:
1721 while (rx_index--)
1722 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1723 for (i = 0; i < priv->rx_ring_num; i++)
1724 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1725
1726 return err; /* need to close devices */
1727 }
1728
1729
1730 void mlx4_en_stop_port(struct net_device *dev, int detach)
1731 {
1732 struct mlx4_en_priv *priv = netdev_priv(dev);
1733 struct mlx4_en_dev *mdev = priv->mdev;
1734 struct mlx4_en_mc_list *mclist, *tmp;
1735 struct ethtool_flow_id *flow, *tmp_flow;
1736 int i;
1737 u8 mc_list[16] = {0};
1738
1739 if (!priv->port_up) {
1740 en_dbg(DRV, priv, "stop port called while port already down\n");
1741 return;
1742 }
1743
1744 /* close port*/
1745 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1746
1747 /* Synchronize with tx routine */
1748 netif_tx_lock_bh(dev);
1749 if (detach)
1750 netif_device_detach(dev);
1751 netif_tx_stop_all_queues(dev);
1752 netif_tx_unlock_bh(dev);
1753
1754 netif_tx_disable(dev);
1755
1756 /* Set port as not active */
1757 priv->port_up = false;
1758
1759 /* Promsicuous mode */
1760 if (mdev->dev->caps.steering_mode ==
1761 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1762 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1763 MLX4_EN_FLAG_MC_PROMISC);
1764 mlx4_flow_steer_promisc_remove(mdev->dev,
1765 priv->port,
1766 MLX4_FS_ALL_DEFAULT);
1767 mlx4_flow_steer_promisc_remove(mdev->dev,
1768 priv->port,
1769 MLX4_FS_MC_DEFAULT);
1770 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1771 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1772
1773 /* Disable promiscouos mode */
1774 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1775 priv->port);
1776
1777 /* Disable Multicast promisc */
1778 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1779 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1780 priv->port);
1781 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1782 }
1783 }
1784
1785 /* Detach All multicasts */
1786 memset(&mc_list[10], 0xff, ETH_ALEN);
1787 mc_list[5] = priv->port; /* needed for B0 steering support */
1788 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1789 MLX4_PROT_ETH, priv->broadcast_id);
1790 list_for_each_entry(mclist, &priv->curr_list, list) {
1791 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1792 mc_list[5] = priv->port;
1793 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1794 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1795 }
1796 mlx4_en_clear_list(dev);
1797 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1798 list_del(&mclist->list);
1799 kfree(mclist);
1800 }
1801
1802 /* Flush multicast filter */
1803 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1804
1805 /* Remove flow steering rules for the port*/
1806 if (mdev->dev->caps.steering_mode ==
1807 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1808 ASSERT_RTNL();
1809 list_for_each_entry_safe(flow, tmp_flow,
1810 &priv->ethtool_list, list) {
1811 mlx4_flow_detach(mdev->dev, flow->id);
1812 list_del(&flow->list);
1813 }
1814 }
1815
1816 mlx4_en_destroy_drop_qp(priv);
1817
1818 /* Free TX Rings */
1819 for (i = 0; i < priv->tx_ring_num; i++) {
1820 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1821 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1822 }
1823 msleep(10);
1824
1825 for (i = 0; i < priv->tx_ring_num; i++)
1826 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1827
1828 /* Free RSS qps */
1829 mlx4_en_release_rss_steer(priv);
1830
1831 /* Unregister Mac address for the port */
1832 mlx4_en_put_qp(priv);
1833 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1834 mdev->mac_removed[priv->port] = 1;
1835
1836 /* Free RX Rings */
1837 for (i = 0; i < priv->rx_ring_num; i++) {
1838 struct mlx4_en_cq *cq = priv->rx_cq[i];
1839
1840 local_bh_disable();
1841 while (!mlx4_en_cq_lock_napi(cq)) {
1842 pr_info("CQ %d locked\n", i);
1843 mdelay(1);
1844 }
1845 local_bh_enable();
1846
1847 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1848 msleep(1);
1849 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1850 mlx4_en_deactivate_cq(priv, cq);
1851 }
1852 }
1853
1854 static void mlx4_en_restart(struct work_struct *work)
1855 {
1856 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1857 watchdog_task);
1858 struct mlx4_en_dev *mdev = priv->mdev;
1859 struct net_device *dev = priv->dev;
1860
1861 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1862
1863 mutex_lock(&mdev->state_lock);
1864 if (priv->port_up) {
1865 mlx4_en_stop_port(dev, 1);
1866 if (mlx4_en_start_port(dev))
1867 en_err(priv, "Failed restarting port %d\n", priv->port);
1868 }
1869 mutex_unlock(&mdev->state_lock);
1870 }
1871
1872 static void mlx4_en_clear_stats(struct net_device *dev)
1873 {
1874 struct mlx4_en_priv *priv = netdev_priv(dev);
1875 struct mlx4_en_dev *mdev = priv->mdev;
1876 int i;
1877
1878 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1879 en_dbg(HW, priv, "Failed dumping statistics\n");
1880
1881 memset(&priv->stats, 0, sizeof(priv->stats));
1882 memset(&priv->pstats, 0, sizeof(priv->pstats));
1883 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1884 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1885
1886 for (i = 0; i < priv->tx_ring_num; i++) {
1887 priv->tx_ring[i]->bytes = 0;
1888 priv->tx_ring[i]->packets = 0;
1889 priv->tx_ring[i]->tx_csum = 0;
1890 }
1891 for (i = 0; i < priv->rx_ring_num; i++) {
1892 priv->rx_ring[i]->bytes = 0;
1893 priv->rx_ring[i]->packets = 0;
1894 priv->rx_ring[i]->csum_ok = 0;
1895 priv->rx_ring[i]->csum_none = 0;
1896 }
1897 }
1898
1899 static int mlx4_en_open(struct net_device *dev)
1900 {
1901 struct mlx4_en_priv *priv = netdev_priv(dev);
1902 struct mlx4_en_dev *mdev = priv->mdev;
1903 int err = 0;
1904
1905 mutex_lock(&mdev->state_lock);
1906
1907 if (!mdev->device_up) {
1908 en_err(priv, "Cannot open - device down/disabled\n");
1909 err = -EBUSY;
1910 goto out;
1911 }
1912
1913 /* Reset HW statistics and SW counters */
1914 mlx4_en_clear_stats(dev);
1915
1916 err = mlx4_en_start_port(dev);
1917 if (err)
1918 en_err(priv, "Failed starting port:%d\n", priv->port);
1919
1920 out:
1921 mutex_unlock(&mdev->state_lock);
1922 return err;
1923 }
1924
1925
1926 static int mlx4_en_close(struct net_device *dev)
1927 {
1928 struct mlx4_en_priv *priv = netdev_priv(dev);
1929 struct mlx4_en_dev *mdev = priv->mdev;
1930
1931 en_dbg(IFDOWN, priv, "Close port called\n");
1932
1933 mutex_lock(&mdev->state_lock);
1934
1935 mlx4_en_stop_port(dev, 0);
1936 netif_carrier_off(dev);
1937
1938 mutex_unlock(&mdev->state_lock);
1939 return 0;
1940 }
1941
1942 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1943 {
1944 int i;
1945
1946 #ifdef CONFIG_RFS_ACCEL
1947 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1948 priv->dev->rx_cpu_rmap = NULL;
1949 #endif
1950
1951 for (i = 0; i < priv->tx_ring_num; i++) {
1952 if (priv->tx_ring && priv->tx_ring[i])
1953 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1954 if (priv->tx_cq && priv->tx_cq[i])
1955 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1956 }
1957
1958 for (i = 0; i < priv->rx_ring_num; i++) {
1959 if (priv->rx_ring[i])
1960 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1961 priv->prof->rx_ring_size, priv->stride);
1962 if (priv->rx_cq[i])
1963 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1964 }
1965
1966 if (priv->base_tx_qpn) {
1967 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1968 priv->base_tx_qpn = 0;
1969 }
1970 }
1971
1972 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1973 {
1974 struct mlx4_en_port_profile *prof = priv->prof;
1975 int i;
1976 int err;
1977 int node;
1978
1979 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1980 if (err) {
1981 en_err(priv, "failed reserving range for TX rings\n");
1982 return err;
1983 }
1984
1985 /* Create tx Rings */
1986 for (i = 0; i < priv->tx_ring_num; i++) {
1987 node = cpu_to_node(i % num_online_cpus());
1988 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1989 prof->tx_ring_size, i, TX, node))
1990 goto err;
1991
1992 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1993 priv->base_tx_qpn + i,
1994 prof->tx_ring_size, TXBB_SIZE,
1995 node, i))
1996 goto err;
1997 }
1998
1999 /* Create rx Rings */
2000 for (i = 0; i < priv->rx_ring_num; i++) {
2001 node = cpu_to_node(i % num_online_cpus());
2002 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2003 prof->rx_ring_size, i, RX, node))
2004 goto err;
2005
2006 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2007 prof->rx_ring_size, priv->stride,
2008 node))
2009 goto err;
2010 }
2011
2012 #ifdef CONFIG_RFS_ACCEL
2013 if (priv->mdev->dev->caps.comp_pool) {
2014 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
2015 if (!priv->dev->rx_cpu_rmap)
2016 goto err;
2017 }
2018 #endif
2019
2020 return 0;
2021
2022 err:
2023 en_err(priv, "Failed to allocate NIC resources\n");
2024 for (i = 0; i < priv->rx_ring_num; i++) {
2025 if (priv->rx_ring[i])
2026 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2027 prof->rx_ring_size,
2028 priv->stride);
2029 if (priv->rx_cq[i])
2030 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2031 }
2032 for (i = 0; i < priv->tx_ring_num; i++) {
2033 if (priv->tx_ring[i])
2034 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2035 if (priv->tx_cq[i])
2036 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2037 }
2038 return -ENOMEM;
2039 }
2040
2041
2042 void mlx4_en_destroy_netdev(struct net_device *dev)
2043 {
2044 struct mlx4_en_priv *priv = netdev_priv(dev);
2045 struct mlx4_en_dev *mdev = priv->mdev;
2046
2047 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2048
2049 /* Unregister device - this will close the port if it was up */
2050 if (priv->registered)
2051 unregister_netdev(dev);
2052
2053 if (priv->allocated)
2054 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2055
2056 cancel_delayed_work(&priv->stats_task);
2057 cancel_delayed_work(&priv->service_task);
2058 /* flush any pending task for this netdev */
2059 flush_workqueue(mdev->workqueue);
2060
2061 /* Detach the netdev so tasks would not attempt to access it */
2062 mutex_lock(&mdev->state_lock);
2063 mdev->pndev[priv->port] = NULL;
2064 mutex_unlock(&mdev->state_lock);
2065
2066 mlx4_en_free_resources(priv);
2067
2068 kfree(priv->tx_ring);
2069 kfree(priv->tx_cq);
2070
2071 free_netdev(dev);
2072 }
2073
2074 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2075 {
2076 struct mlx4_en_priv *priv = netdev_priv(dev);
2077 struct mlx4_en_dev *mdev = priv->mdev;
2078 int err = 0;
2079
2080 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2081 dev->mtu, new_mtu);
2082
2083 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2084 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2085 return -EPERM;
2086 }
2087 dev->mtu = new_mtu;
2088
2089 if (netif_running(dev)) {
2090 mutex_lock(&mdev->state_lock);
2091 if (!mdev->device_up) {
2092 /* NIC is probably restarting - let watchdog task reset
2093 * the port */
2094 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2095 } else {
2096 mlx4_en_stop_port(dev, 1);
2097 err = mlx4_en_start_port(dev);
2098 if (err) {
2099 en_err(priv, "Failed restarting port:%d\n",
2100 priv->port);
2101 queue_work(mdev->workqueue, &priv->watchdog_task);
2102 }
2103 }
2104 mutex_unlock(&mdev->state_lock);
2105 }
2106 return 0;
2107 }
2108
2109 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2110 {
2111 struct mlx4_en_priv *priv = netdev_priv(dev);
2112 struct mlx4_en_dev *mdev = priv->mdev;
2113 struct hwtstamp_config config;
2114
2115 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2116 return -EFAULT;
2117
2118 /* reserved for future extensions */
2119 if (config.flags)
2120 return -EINVAL;
2121
2122 /* device doesn't support time stamping */
2123 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2124 return -EINVAL;
2125
2126 /* TX HW timestamp */
2127 switch (config.tx_type) {
2128 case HWTSTAMP_TX_OFF:
2129 case HWTSTAMP_TX_ON:
2130 break;
2131 default:
2132 return -ERANGE;
2133 }
2134
2135 /* RX HW timestamp */
2136 switch (config.rx_filter) {
2137 case HWTSTAMP_FILTER_NONE:
2138 break;
2139 case HWTSTAMP_FILTER_ALL:
2140 case HWTSTAMP_FILTER_SOME:
2141 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2142 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2143 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2144 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2145 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2146 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2147 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2148 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2149 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2150 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2151 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2152 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2153 config.rx_filter = HWTSTAMP_FILTER_ALL;
2154 break;
2155 default:
2156 return -ERANGE;
2157 }
2158
2159 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2160 config.tx_type = HWTSTAMP_TX_OFF;
2161 config.rx_filter = HWTSTAMP_FILTER_NONE;
2162 }
2163
2164 return copy_to_user(ifr->ifr_data, &config,
2165 sizeof(config)) ? -EFAULT : 0;
2166 }
2167
2168 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2169 {
2170 struct mlx4_en_priv *priv = netdev_priv(dev);
2171
2172 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2173 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2174 }
2175
2176 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2177 {
2178 switch (cmd) {
2179 case SIOCSHWTSTAMP:
2180 return mlx4_en_hwtstamp_set(dev, ifr);
2181 case SIOCGHWTSTAMP:
2182 return mlx4_en_hwtstamp_get(dev, ifr);
2183 default:
2184 return -EOPNOTSUPP;
2185 }
2186 }
2187
2188 static int mlx4_en_set_features(struct net_device *netdev,
2189 netdev_features_t features)
2190 {
2191 struct mlx4_en_priv *priv = netdev_priv(netdev);
2192
2193 if (features & NETIF_F_LOOPBACK)
2194 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2195 else
2196 priv->ctrl_flags &=
2197 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2198
2199 mlx4_en_update_loopback_state(netdev, features);
2200
2201 return 0;
2202
2203 }
2204
2205 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2206 {
2207 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2208 struct mlx4_en_dev *mdev = en_priv->mdev;
2209 u64 mac_u64 = mlx4_en_mac_to_u64(mac);
2210
2211 if (!is_valid_ether_addr(mac))
2212 return -EINVAL;
2213
2214 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2215 }
2216
2217 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2218 {
2219 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2220 struct mlx4_en_dev *mdev = en_priv->mdev;
2221
2222 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2223 }
2224
2225 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2226 {
2227 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2228 struct mlx4_en_dev *mdev = en_priv->mdev;
2229
2230 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2231 }
2232
2233 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2234 {
2235 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2236 struct mlx4_en_dev *mdev = en_priv->mdev;
2237
2238 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2239 }
2240
2241 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2242 {
2243 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2244 struct mlx4_en_dev *mdev = en_priv->mdev;
2245
2246 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2247 }
2248
2249 #define PORT_ID_BYTE_LEN 8
2250 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2251 struct netdev_phys_port_id *ppid)
2252 {
2253 struct mlx4_en_priv *priv = netdev_priv(dev);
2254 struct mlx4_dev *mdev = priv->mdev->dev;
2255 int i;
2256 u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2257
2258 if (!phys_port_id)
2259 return -EOPNOTSUPP;
2260
2261 ppid->id_len = sizeof(phys_port_id);
2262 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2263 ppid->id[i] = phys_port_id & 0xff;
2264 phys_port_id >>= 8;
2265 }
2266 return 0;
2267 }
2268
2269 static const struct net_device_ops mlx4_netdev_ops = {
2270 .ndo_open = mlx4_en_open,
2271 .ndo_stop = mlx4_en_close,
2272 .ndo_start_xmit = mlx4_en_xmit,
2273 .ndo_select_queue = mlx4_en_select_queue,
2274 .ndo_get_stats = mlx4_en_get_stats,
2275 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2276 .ndo_set_mac_address = mlx4_en_set_mac,
2277 .ndo_validate_addr = eth_validate_addr,
2278 .ndo_change_mtu = mlx4_en_change_mtu,
2279 .ndo_do_ioctl = mlx4_en_ioctl,
2280 .ndo_tx_timeout = mlx4_en_tx_timeout,
2281 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2282 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2283 #ifdef CONFIG_NET_POLL_CONTROLLER
2284 .ndo_poll_controller = mlx4_en_netpoll,
2285 #endif
2286 .ndo_set_features = mlx4_en_set_features,
2287 .ndo_setup_tc = mlx4_en_setup_tc,
2288 #ifdef CONFIG_RFS_ACCEL
2289 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2290 #endif
2291 #ifdef CONFIG_NET_RX_BUSY_POLL
2292 .ndo_busy_poll = mlx4_en_low_latency_recv,
2293 #endif
2294 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2295 };
2296
2297 static const struct net_device_ops mlx4_netdev_ops_master = {
2298 .ndo_open = mlx4_en_open,
2299 .ndo_stop = mlx4_en_close,
2300 .ndo_start_xmit = mlx4_en_xmit,
2301 .ndo_select_queue = mlx4_en_select_queue,
2302 .ndo_get_stats = mlx4_en_get_stats,
2303 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2304 .ndo_set_mac_address = mlx4_en_set_mac,
2305 .ndo_validate_addr = eth_validate_addr,
2306 .ndo_change_mtu = mlx4_en_change_mtu,
2307 .ndo_tx_timeout = mlx4_en_tx_timeout,
2308 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2309 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2310 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2311 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2312 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2313 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2314 .ndo_get_vf_config = mlx4_en_get_vf_config,
2315 #ifdef CONFIG_NET_POLL_CONTROLLER
2316 .ndo_poll_controller = mlx4_en_netpoll,
2317 #endif
2318 .ndo_set_features = mlx4_en_set_features,
2319 .ndo_setup_tc = mlx4_en_setup_tc,
2320 #ifdef CONFIG_RFS_ACCEL
2321 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2322 #endif
2323 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2324 };
2325
2326 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2327 struct mlx4_en_port_profile *prof)
2328 {
2329 struct net_device *dev;
2330 struct mlx4_en_priv *priv;
2331 int i;
2332 int err;
2333 u64 mac_u64;
2334
2335 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2336 MAX_TX_RINGS, MAX_RX_RINGS);
2337 if (dev == NULL)
2338 return -ENOMEM;
2339
2340 netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2341 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2342
2343 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2344 dev->dev_id = port - 1;
2345
2346 /*
2347 * Initialize driver private data
2348 */
2349
2350 priv = netdev_priv(dev);
2351 memset(priv, 0, sizeof(struct mlx4_en_priv));
2352 priv->dev = dev;
2353 priv->mdev = mdev;
2354 priv->ddev = &mdev->pdev->dev;
2355 priv->prof = prof;
2356 priv->port = port;
2357 priv->port_up = false;
2358 priv->flags = prof->flags;
2359 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2360 MLX4_WQE_CTRL_SOLICITED);
2361 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2362 priv->tx_ring_num = prof->tx_ring_num;
2363
2364 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2365 GFP_KERNEL);
2366 if (!priv->tx_ring) {
2367 err = -ENOMEM;
2368 goto out;
2369 }
2370 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2371 GFP_KERNEL);
2372 if (!priv->tx_cq) {
2373 err = -ENOMEM;
2374 goto out;
2375 }
2376 priv->rx_ring_num = prof->rx_ring_num;
2377 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2378 priv->mac_index = -1;
2379 priv->msg_enable = MLX4_EN_MSG_LEVEL;
2380 spin_lock_init(&priv->stats_lock);
2381 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2382 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2383 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2384 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2385 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2386 #ifdef CONFIG_MLX4_EN_DCB
2387 if (!mlx4_is_slave(priv->mdev->dev)) {
2388 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2389 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2390 } else {
2391 en_info(priv, "enabling only PFC DCB ops\n");
2392 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2393 }
2394 }
2395 #endif
2396
2397 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2398 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2399
2400 /* Query for default mac and max mtu */
2401 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2402
2403 /* Set default MAC */
2404 dev->addr_len = ETH_ALEN;
2405 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2406 if (!is_valid_ether_addr(dev->dev_addr)) {
2407 if (mlx4_is_slave(priv->mdev->dev)) {
2408 eth_hw_addr_random(dev);
2409 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2410 mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr);
2411 mdev->dev->caps.def_mac[priv->port] = mac_u64;
2412 } else {
2413 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2414 priv->port, dev->dev_addr);
2415 err = -EINVAL;
2416 goto out;
2417 }
2418 }
2419
2420 memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2421
2422 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2423 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2424 err = mlx4_en_alloc_resources(priv);
2425 if (err)
2426 goto out;
2427
2428 #ifdef CONFIG_RFS_ACCEL
2429 INIT_LIST_HEAD(&priv->filters);
2430 spin_lock_init(&priv->filters_lock);
2431 #endif
2432
2433 /* Initialize time stamping config */
2434 priv->hwtstamp_config.flags = 0;
2435 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2436 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2437
2438 /* Allocate page for receive rings */
2439 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2440 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2441 if (err) {
2442 en_err(priv, "Failed to allocate page for rx qps\n");
2443 goto out;
2444 }
2445 priv->allocated = 1;
2446
2447 /*
2448 * Initialize netdev entry points
2449 */
2450 if (mlx4_is_master(priv->mdev->dev))
2451 dev->netdev_ops = &mlx4_netdev_ops_master;
2452 else
2453 dev->netdev_ops = &mlx4_netdev_ops;
2454 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2455 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2456 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2457
2458 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
2459
2460 /*
2461 * Set driver features
2462 */
2463 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2464 if (mdev->LSO_support)
2465 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2466
2467 dev->vlan_features = dev->hw_features;
2468
2469 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2470 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2471 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2472 NETIF_F_HW_VLAN_CTAG_FILTER;
2473 dev->hw_features |= NETIF_F_LOOPBACK;
2474
2475 if (mdev->dev->caps.steering_mode ==
2476 MLX4_STEERING_MODE_DEVICE_MANAGED)
2477 dev->hw_features |= NETIF_F_NTUPLE;
2478
2479 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2480 dev->priv_flags |= IFF_UNICAST_FLT;
2481
2482 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2483 dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2484 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
2485 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
2486 dev->features |= NETIF_F_GSO_UDP_TUNNEL;
2487 }
2488
2489 mdev->pndev[port] = dev;
2490
2491 netif_carrier_off(dev);
2492 mlx4_en_set_default_moderation(priv);
2493
2494 err = register_netdev(dev);
2495 if (err) {
2496 en_err(priv, "Netdev registration failed for port %d\n", port);
2497 goto out;
2498 }
2499 priv->registered = 1;
2500
2501 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2502 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2503
2504 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2505
2506 /* Configure port */
2507 mlx4_en_calc_rx_buf(dev);
2508 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2509 priv->rx_skb_size + ETH_FCS_LEN,
2510 prof->tx_pause, prof->tx_ppp,
2511 prof->rx_pause, prof->rx_ppp);
2512 if (err) {
2513 en_err(priv, "Failed setting port general configurations "
2514 "for port %d, with error %d\n", priv->port, err);
2515 goto out;
2516 }
2517
2518 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2519 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC);
2520 if (err) {
2521 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
2522 err);
2523 goto out;
2524 }
2525 }
2526
2527 /* Init port */
2528 en_warn(priv, "Initializing port\n");
2529 err = mlx4_INIT_PORT(mdev->dev, priv->port);
2530 if (err) {
2531 en_err(priv, "Failed Initializing port\n");
2532 goto out;
2533 }
2534 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2535
2536 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2537 queue_delayed_work(mdev->workqueue, &priv->service_task,
2538 SERVICE_TASK_DELAY);
2539
2540 return 0;
2541
2542 out:
2543 mlx4_en_destroy_netdev(dev);
2544 return err;
2545 }
2546
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