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ARM: common: edma: Fix xbar mapping
[deliverable/linux.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 #include <net/vxlan.h>
43
44 #include <linux/mlx4/driver.h>
45 #include <linux/mlx4/device.h>
46 #include <linux/mlx4/cmd.h>
47 #include <linux/mlx4/cq.h>
48
49 #include "mlx4_en.h"
50 #include "en_port.h"
51
52 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
53 {
54 struct mlx4_en_priv *priv = netdev_priv(dev);
55 int i;
56 unsigned int offset = 0;
57
58 if (up && up != MLX4_EN_NUM_UP)
59 return -EINVAL;
60
61 netdev_set_num_tc(dev, up);
62
63 /* Partition Tx queues evenly amongst UP's */
64 for (i = 0; i < up; i++) {
65 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
66 offset += priv->num_tx_rings_p_up;
67 }
68
69 return 0;
70 }
71
72 #ifdef CONFIG_NET_RX_BUSY_POLL
73 /* must be called with local_bh_disable()d */
74 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
75 {
76 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
77 struct net_device *dev = cq->dev;
78 struct mlx4_en_priv *priv = netdev_priv(dev);
79 struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
80 int done;
81
82 if (!priv->port_up)
83 return LL_FLUSH_FAILED;
84
85 if (!mlx4_en_cq_lock_poll(cq))
86 return LL_FLUSH_BUSY;
87
88 done = mlx4_en_process_rx_cq(dev, cq, 4);
89 if (likely(done))
90 rx_ring->cleaned += done;
91 else
92 rx_ring->misses++;
93
94 mlx4_en_cq_unlock_poll(cq);
95
96 return done;
97 }
98 #endif /* CONFIG_NET_RX_BUSY_POLL */
99
100 #ifdef CONFIG_RFS_ACCEL
101
102 struct mlx4_en_filter {
103 struct list_head next;
104 struct work_struct work;
105
106 u8 ip_proto;
107 __be32 src_ip;
108 __be32 dst_ip;
109 __be16 src_port;
110 __be16 dst_port;
111
112 int rxq_index;
113 struct mlx4_en_priv *priv;
114 u32 flow_id; /* RFS infrastructure id */
115 int id; /* mlx4_en driver id */
116 u64 reg_id; /* Flow steering API id */
117 u8 activated; /* Used to prevent expiry before filter
118 * is attached
119 */
120 struct hlist_node filter_chain;
121 };
122
123 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
124
125 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
126 {
127 switch (ip_proto) {
128 case IPPROTO_UDP:
129 return MLX4_NET_TRANS_RULE_ID_UDP;
130 case IPPROTO_TCP:
131 return MLX4_NET_TRANS_RULE_ID_TCP;
132 default:
133 return -EPROTONOSUPPORT;
134 }
135 };
136
137 static void mlx4_en_filter_work(struct work_struct *work)
138 {
139 struct mlx4_en_filter *filter = container_of(work,
140 struct mlx4_en_filter,
141 work);
142 struct mlx4_en_priv *priv = filter->priv;
143 struct mlx4_spec_list spec_tcp_udp = {
144 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
145 {
146 .tcp_udp = {
147 .dst_port = filter->dst_port,
148 .dst_port_msk = (__force __be16)-1,
149 .src_port = filter->src_port,
150 .src_port_msk = (__force __be16)-1,
151 },
152 },
153 };
154 struct mlx4_spec_list spec_ip = {
155 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
156 {
157 .ipv4 = {
158 .dst_ip = filter->dst_ip,
159 .dst_ip_msk = (__force __be32)-1,
160 .src_ip = filter->src_ip,
161 .src_ip_msk = (__force __be32)-1,
162 },
163 },
164 };
165 struct mlx4_spec_list spec_eth = {
166 .id = MLX4_NET_TRANS_RULE_ID_ETH,
167 };
168 struct mlx4_net_trans_rule rule = {
169 .list = LIST_HEAD_INIT(rule.list),
170 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
171 .exclusive = 1,
172 .allow_loopback = 1,
173 .promisc_mode = MLX4_FS_REGULAR,
174 .port = priv->port,
175 .priority = MLX4_DOMAIN_RFS,
176 };
177 int rc;
178 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
179
180 if (spec_tcp_udp.id < 0) {
181 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
182 filter->ip_proto);
183 goto ignore;
184 }
185 list_add_tail(&spec_eth.list, &rule.list);
186 list_add_tail(&spec_ip.list, &rule.list);
187 list_add_tail(&spec_tcp_udp.list, &rule.list);
188
189 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
190 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
191 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
192
193 filter->activated = 0;
194
195 if (filter->reg_id) {
196 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
197 if (rc && rc != -ENOENT)
198 en_err(priv, "Error detaching flow. rc = %d\n", rc);
199 }
200
201 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
202 if (rc)
203 en_err(priv, "Error attaching flow. err = %d\n", rc);
204
205 ignore:
206 mlx4_en_filter_rfs_expire(priv);
207
208 filter->activated = 1;
209 }
210
211 static inline struct hlist_head *
212 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
213 __be16 src_port, __be16 dst_port)
214 {
215 unsigned long l;
216 int bucket_idx;
217
218 l = (__force unsigned long)src_port |
219 ((__force unsigned long)dst_port << 2);
220 l ^= (__force unsigned long)(src_ip ^ dst_ip);
221
222 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
223
224 return &priv->filter_hash[bucket_idx];
225 }
226
227 static struct mlx4_en_filter *
228 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
229 __be32 dst_ip, u8 ip_proto, __be16 src_port,
230 __be16 dst_port, u32 flow_id)
231 {
232 struct mlx4_en_filter *filter = NULL;
233
234 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
235 if (!filter)
236 return NULL;
237
238 filter->priv = priv;
239 filter->rxq_index = rxq_index;
240 INIT_WORK(&filter->work, mlx4_en_filter_work);
241
242 filter->src_ip = src_ip;
243 filter->dst_ip = dst_ip;
244 filter->ip_proto = ip_proto;
245 filter->src_port = src_port;
246 filter->dst_port = dst_port;
247
248 filter->flow_id = flow_id;
249
250 filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
251
252 list_add_tail(&filter->next, &priv->filters);
253 hlist_add_head(&filter->filter_chain,
254 filter_hash_bucket(priv, src_ip, dst_ip, src_port,
255 dst_port));
256
257 return filter;
258 }
259
260 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
261 {
262 struct mlx4_en_priv *priv = filter->priv;
263 int rc;
264
265 list_del(&filter->next);
266
267 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
268 if (rc && rc != -ENOENT)
269 en_err(priv, "Error detaching flow. rc = %d\n", rc);
270
271 kfree(filter);
272 }
273
274 static inline struct mlx4_en_filter *
275 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
276 u8 ip_proto, __be16 src_port, __be16 dst_port)
277 {
278 struct mlx4_en_filter *filter;
279 struct mlx4_en_filter *ret = NULL;
280
281 hlist_for_each_entry(filter,
282 filter_hash_bucket(priv, src_ip, dst_ip,
283 src_port, dst_port),
284 filter_chain) {
285 if (filter->src_ip == src_ip &&
286 filter->dst_ip == dst_ip &&
287 filter->ip_proto == ip_proto &&
288 filter->src_port == src_port &&
289 filter->dst_port == dst_port) {
290 ret = filter;
291 break;
292 }
293 }
294
295 return ret;
296 }
297
298 static int
299 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
300 u16 rxq_index, u32 flow_id)
301 {
302 struct mlx4_en_priv *priv = netdev_priv(net_dev);
303 struct mlx4_en_filter *filter;
304 const struct iphdr *ip;
305 const __be16 *ports;
306 u8 ip_proto;
307 __be32 src_ip;
308 __be32 dst_ip;
309 __be16 src_port;
310 __be16 dst_port;
311 int nhoff = skb_network_offset(skb);
312 int ret = 0;
313
314 if (skb->protocol != htons(ETH_P_IP))
315 return -EPROTONOSUPPORT;
316
317 ip = (const struct iphdr *)(skb->data + nhoff);
318 if (ip_is_fragment(ip))
319 return -EPROTONOSUPPORT;
320
321 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
322 return -EPROTONOSUPPORT;
323 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
324
325 ip_proto = ip->protocol;
326 src_ip = ip->saddr;
327 dst_ip = ip->daddr;
328 src_port = ports[0];
329 dst_port = ports[1];
330
331 spin_lock_bh(&priv->filters_lock);
332 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
333 src_port, dst_port);
334 if (filter) {
335 if (filter->rxq_index == rxq_index)
336 goto out;
337
338 filter->rxq_index = rxq_index;
339 } else {
340 filter = mlx4_en_filter_alloc(priv, rxq_index,
341 src_ip, dst_ip, ip_proto,
342 src_port, dst_port, flow_id);
343 if (!filter) {
344 ret = -ENOMEM;
345 goto err;
346 }
347 }
348
349 queue_work(priv->mdev->workqueue, &filter->work);
350
351 out:
352 ret = filter->id;
353 err:
354 spin_unlock_bh(&priv->filters_lock);
355
356 return ret;
357 }
358
359 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
360 {
361 struct mlx4_en_filter *filter, *tmp;
362 LIST_HEAD(del_list);
363
364 spin_lock_bh(&priv->filters_lock);
365 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
366 list_move(&filter->next, &del_list);
367 hlist_del(&filter->filter_chain);
368 }
369 spin_unlock_bh(&priv->filters_lock);
370
371 list_for_each_entry_safe(filter, tmp, &del_list, next) {
372 cancel_work_sync(&filter->work);
373 mlx4_en_filter_free(filter);
374 }
375 }
376
377 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
378 {
379 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
380 LIST_HEAD(del_list);
381 int i = 0;
382
383 spin_lock_bh(&priv->filters_lock);
384 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
385 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
386 break;
387
388 if (filter->activated &&
389 !work_pending(&filter->work) &&
390 rps_may_expire_flow(priv->dev,
391 filter->rxq_index, filter->flow_id,
392 filter->id)) {
393 list_move(&filter->next, &del_list);
394 hlist_del(&filter->filter_chain);
395 } else
396 last_filter = filter;
397
398 i++;
399 }
400
401 if (last_filter && (&last_filter->next != priv->filters.next))
402 list_move(&priv->filters, &last_filter->next);
403
404 spin_unlock_bh(&priv->filters_lock);
405
406 list_for_each_entry_safe(filter, tmp, &del_list, next)
407 mlx4_en_filter_free(filter);
408 }
409 #endif
410
411 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
412 __be16 proto, u16 vid)
413 {
414 struct mlx4_en_priv *priv = netdev_priv(dev);
415 struct mlx4_en_dev *mdev = priv->mdev;
416 int err;
417 int idx;
418
419 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
420
421 set_bit(vid, priv->active_vlans);
422
423 /* Add VID to port VLAN filter */
424 mutex_lock(&mdev->state_lock);
425 if (mdev->device_up && priv->port_up) {
426 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
427 if (err)
428 en_err(priv, "Failed configuring VLAN filter\n");
429 }
430 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
431 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
432 mutex_unlock(&mdev->state_lock);
433
434 return 0;
435 }
436
437 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
438 __be16 proto, u16 vid)
439 {
440 struct mlx4_en_priv *priv = netdev_priv(dev);
441 struct mlx4_en_dev *mdev = priv->mdev;
442 int err;
443
444 en_dbg(HW, priv, "Killing VID:%d\n", vid);
445
446 clear_bit(vid, priv->active_vlans);
447
448 /* Remove VID from port VLAN filter */
449 mutex_lock(&mdev->state_lock);
450 mlx4_unregister_vlan(mdev->dev, priv->port, vid);
451
452 if (mdev->device_up && priv->port_up) {
453 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
454 if (err)
455 en_err(priv, "Failed configuring VLAN filter\n");
456 }
457 mutex_unlock(&mdev->state_lock);
458
459 return 0;
460 }
461
462 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
463 {
464 int i;
465 for (i = ETH_ALEN - 1; i >= 0; --i) {
466 dst_mac[i] = src_mac & 0xff;
467 src_mac >>= 8;
468 }
469 memset(&dst_mac[ETH_ALEN], 0, 2);
470 }
471
472
473 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
474 int qpn, u64 *reg_id)
475 {
476 int err;
477 struct mlx4_spec_list spec_eth_outer = { {NULL} };
478 struct mlx4_spec_list spec_vxlan = { {NULL} };
479 struct mlx4_spec_list spec_eth_inner = { {NULL} };
480
481 struct mlx4_net_trans_rule rule = {
482 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
483 .exclusive = 0,
484 .allow_loopback = 1,
485 .promisc_mode = MLX4_FS_REGULAR,
486 .priority = MLX4_DOMAIN_NIC,
487 };
488
489 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
490
491 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
492 return 0; /* do nothing */
493
494 rule.port = priv->port;
495 rule.qpn = qpn;
496 INIT_LIST_HEAD(&rule.list);
497
498 spec_eth_outer.id = MLX4_NET_TRANS_RULE_ID_ETH;
499 memcpy(spec_eth_outer.eth.dst_mac, addr, ETH_ALEN);
500 memcpy(spec_eth_outer.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
501
502 spec_vxlan.id = MLX4_NET_TRANS_RULE_ID_VXLAN; /* any vxlan header */
503 spec_eth_inner.id = MLX4_NET_TRANS_RULE_ID_ETH; /* any inner eth header */
504
505 list_add_tail(&spec_eth_outer.list, &rule.list);
506 list_add_tail(&spec_vxlan.list, &rule.list);
507 list_add_tail(&spec_eth_inner.list, &rule.list);
508
509 err = mlx4_flow_attach(priv->mdev->dev, &rule, reg_id);
510 if (err) {
511 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
512 return err;
513 }
514 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
515 return 0;
516 }
517
518
519 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
520 unsigned char *mac, int *qpn, u64 *reg_id)
521 {
522 struct mlx4_en_dev *mdev = priv->mdev;
523 struct mlx4_dev *dev = mdev->dev;
524 int err;
525
526 switch (dev->caps.steering_mode) {
527 case MLX4_STEERING_MODE_B0: {
528 struct mlx4_qp qp;
529 u8 gid[16] = {0};
530
531 qp.qpn = *qpn;
532 memcpy(&gid[10], mac, ETH_ALEN);
533 gid[5] = priv->port;
534
535 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
536 break;
537 }
538 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
539 struct mlx4_spec_list spec_eth = { {NULL} };
540 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
541
542 struct mlx4_net_trans_rule rule = {
543 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
544 .exclusive = 0,
545 .allow_loopback = 1,
546 .promisc_mode = MLX4_FS_REGULAR,
547 .priority = MLX4_DOMAIN_NIC,
548 };
549
550 rule.port = priv->port;
551 rule.qpn = *qpn;
552 INIT_LIST_HEAD(&rule.list);
553
554 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
555 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
556 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
557 list_add_tail(&spec_eth.list, &rule.list);
558
559 err = mlx4_flow_attach(dev, &rule, reg_id);
560 break;
561 }
562 default:
563 return -EINVAL;
564 }
565 if (err)
566 en_warn(priv, "Failed Attaching Unicast\n");
567
568 return err;
569 }
570
571 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
572 unsigned char *mac, int qpn, u64 reg_id)
573 {
574 struct mlx4_en_dev *mdev = priv->mdev;
575 struct mlx4_dev *dev = mdev->dev;
576
577 switch (dev->caps.steering_mode) {
578 case MLX4_STEERING_MODE_B0: {
579 struct mlx4_qp qp;
580 u8 gid[16] = {0};
581
582 qp.qpn = qpn;
583 memcpy(&gid[10], mac, ETH_ALEN);
584 gid[5] = priv->port;
585
586 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
587 break;
588 }
589 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
590 mlx4_flow_detach(dev, reg_id);
591 break;
592 }
593 default:
594 en_err(priv, "Invalid steering mode.\n");
595 }
596 }
597
598 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
599 {
600 struct mlx4_en_dev *mdev = priv->mdev;
601 struct mlx4_dev *dev = mdev->dev;
602 struct mlx4_mac_entry *entry;
603 int index = 0;
604 int err = 0;
605 u64 reg_id;
606 int *qpn = &priv->base_qpn;
607 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
608
609 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
610 priv->dev->dev_addr);
611 index = mlx4_register_mac(dev, priv->port, mac);
612 if (index < 0) {
613 err = index;
614 en_err(priv, "Failed adding MAC: %pM\n",
615 priv->dev->dev_addr);
616 return err;
617 }
618
619 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
620 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
621 *qpn = base_qpn + index;
622 return 0;
623 }
624
625 err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
626 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
627 if (err) {
628 en_err(priv, "Failed to reserve qp for mac registration\n");
629 goto qp_err;
630 }
631
632 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
633 if (err)
634 goto steer_err;
635
636 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
637 &priv->tunnel_reg_id);
638 if (err)
639 goto tunnel_err;
640
641 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
642 if (!entry) {
643 err = -ENOMEM;
644 goto alloc_err;
645 }
646 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
647 entry->reg_id = reg_id;
648
649 hlist_add_head_rcu(&entry->hlist,
650 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
651
652 return 0;
653
654 alloc_err:
655 if (priv->tunnel_reg_id)
656 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
657 tunnel_err:
658 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
659
660 steer_err:
661 mlx4_qp_release_range(dev, *qpn, 1);
662
663 qp_err:
664 mlx4_unregister_mac(dev, priv->port, mac);
665 return err;
666 }
667
668 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
669 {
670 struct mlx4_en_dev *mdev = priv->mdev;
671 struct mlx4_dev *dev = mdev->dev;
672 int qpn = priv->base_qpn;
673 u64 mac;
674
675 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
676 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
677 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
678 priv->dev->dev_addr);
679 mlx4_unregister_mac(dev, priv->port, mac);
680 } else {
681 struct mlx4_mac_entry *entry;
682 struct hlist_node *tmp;
683 struct hlist_head *bucket;
684 unsigned int i;
685
686 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
687 bucket = &priv->mac_hash[i];
688 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
689 mac = mlx4_mac_to_u64(entry->mac);
690 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
691 entry->mac);
692 mlx4_en_uc_steer_release(priv, entry->mac,
693 qpn, entry->reg_id);
694
695 mlx4_unregister_mac(dev, priv->port, mac);
696 hlist_del_rcu(&entry->hlist);
697 kfree_rcu(entry, rcu);
698 }
699 }
700
701 if (priv->tunnel_reg_id) {
702 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
703 priv->tunnel_reg_id = 0;
704 }
705
706 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
707 priv->port, qpn);
708 mlx4_qp_release_range(dev, qpn, 1);
709 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
710 }
711 }
712
713 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
714 unsigned char *new_mac, unsigned char *prev_mac)
715 {
716 struct mlx4_en_dev *mdev = priv->mdev;
717 struct mlx4_dev *dev = mdev->dev;
718 int err = 0;
719 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
720
721 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
722 struct hlist_head *bucket;
723 unsigned int mac_hash;
724 struct mlx4_mac_entry *entry;
725 struct hlist_node *tmp;
726 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
727
728 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
729 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
730 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
731 mlx4_en_uc_steer_release(priv, entry->mac,
732 qpn, entry->reg_id);
733 mlx4_unregister_mac(dev, priv->port,
734 prev_mac_u64);
735 hlist_del_rcu(&entry->hlist);
736 synchronize_rcu();
737 memcpy(entry->mac, new_mac, ETH_ALEN);
738 entry->reg_id = 0;
739 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
740 hlist_add_head_rcu(&entry->hlist,
741 &priv->mac_hash[mac_hash]);
742 mlx4_register_mac(dev, priv->port, new_mac_u64);
743 err = mlx4_en_uc_steer_add(priv, new_mac,
744 &qpn,
745 &entry->reg_id);
746 if (err)
747 return err;
748 if (priv->tunnel_reg_id) {
749 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
750 priv->tunnel_reg_id = 0;
751 }
752 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
753 &priv->tunnel_reg_id);
754 return err;
755 }
756 }
757 return -EINVAL;
758 }
759
760 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
761 }
762
763 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
764 {
765 int err = 0;
766
767 if (priv->port_up) {
768 /* Remove old MAC and insert the new one */
769 err = mlx4_en_replace_mac(priv, priv->base_qpn,
770 priv->dev->dev_addr, priv->prev_mac);
771 if (err)
772 en_err(priv, "Failed changing HW MAC address\n");
773 memcpy(priv->prev_mac, priv->dev->dev_addr,
774 sizeof(priv->prev_mac));
775 } else
776 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
777
778 return err;
779 }
780
781 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
782 {
783 struct mlx4_en_priv *priv = netdev_priv(dev);
784 struct mlx4_en_dev *mdev = priv->mdev;
785 struct sockaddr *saddr = addr;
786 int err;
787
788 if (!is_valid_ether_addr(saddr->sa_data))
789 return -EADDRNOTAVAIL;
790
791 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
792
793 mutex_lock(&mdev->state_lock);
794 err = mlx4_en_do_set_mac(priv);
795 mutex_unlock(&mdev->state_lock);
796
797 return err;
798 }
799
800 static void mlx4_en_clear_list(struct net_device *dev)
801 {
802 struct mlx4_en_priv *priv = netdev_priv(dev);
803 struct mlx4_en_mc_list *tmp, *mc_to_del;
804
805 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
806 list_del(&mc_to_del->list);
807 kfree(mc_to_del);
808 }
809 }
810
811 static void mlx4_en_cache_mclist(struct net_device *dev)
812 {
813 struct mlx4_en_priv *priv = netdev_priv(dev);
814 struct netdev_hw_addr *ha;
815 struct mlx4_en_mc_list *tmp;
816
817 mlx4_en_clear_list(dev);
818 netdev_for_each_mc_addr(ha, dev) {
819 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
820 if (!tmp) {
821 mlx4_en_clear_list(dev);
822 return;
823 }
824 memcpy(tmp->addr, ha->addr, ETH_ALEN);
825 list_add_tail(&tmp->list, &priv->mc_list);
826 }
827 }
828
829 static void update_mclist_flags(struct mlx4_en_priv *priv,
830 struct list_head *dst,
831 struct list_head *src)
832 {
833 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
834 bool found;
835
836 /* Find all the entries that should be removed from dst,
837 * These are the entries that are not found in src
838 */
839 list_for_each_entry(dst_tmp, dst, list) {
840 found = false;
841 list_for_each_entry(src_tmp, src, list) {
842 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
843 found = true;
844 break;
845 }
846 }
847 if (!found)
848 dst_tmp->action = MCLIST_REM;
849 }
850
851 /* Add entries that exist in src but not in dst
852 * mark them as need to add
853 */
854 list_for_each_entry(src_tmp, src, list) {
855 found = false;
856 list_for_each_entry(dst_tmp, dst, list) {
857 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
858 dst_tmp->action = MCLIST_NONE;
859 found = true;
860 break;
861 }
862 }
863 if (!found) {
864 new_mc = kmemdup(src_tmp,
865 sizeof(struct mlx4_en_mc_list),
866 GFP_KERNEL);
867 if (!new_mc)
868 return;
869
870 new_mc->action = MCLIST_ADD;
871 list_add_tail(&new_mc->list, dst);
872 }
873 }
874 }
875
876 static void mlx4_en_set_rx_mode(struct net_device *dev)
877 {
878 struct mlx4_en_priv *priv = netdev_priv(dev);
879
880 if (!priv->port_up)
881 return;
882
883 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
884 }
885
886 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
887 struct mlx4_en_dev *mdev)
888 {
889 int err = 0;
890
891 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
892 if (netif_msg_rx_status(priv))
893 en_warn(priv, "Entering promiscuous mode\n");
894 priv->flags |= MLX4_EN_FLAG_PROMISC;
895
896 /* Enable promiscouos mode */
897 switch (mdev->dev->caps.steering_mode) {
898 case MLX4_STEERING_MODE_DEVICE_MANAGED:
899 err = mlx4_flow_steer_promisc_add(mdev->dev,
900 priv->port,
901 priv->base_qpn,
902 MLX4_FS_ALL_DEFAULT);
903 if (err)
904 en_err(priv, "Failed enabling promiscuous mode\n");
905 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
906 break;
907
908 case MLX4_STEERING_MODE_B0:
909 err = mlx4_unicast_promisc_add(mdev->dev,
910 priv->base_qpn,
911 priv->port);
912 if (err)
913 en_err(priv, "Failed enabling unicast promiscuous mode\n");
914
915 /* Add the default qp number as multicast
916 * promisc
917 */
918 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
919 err = mlx4_multicast_promisc_add(mdev->dev,
920 priv->base_qpn,
921 priv->port);
922 if (err)
923 en_err(priv, "Failed enabling multicast promiscuous mode\n");
924 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
925 }
926 break;
927
928 case MLX4_STEERING_MODE_A0:
929 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
930 priv->port,
931 priv->base_qpn,
932 1);
933 if (err)
934 en_err(priv, "Failed enabling promiscuous mode\n");
935 break;
936 }
937
938 /* Disable port multicast filter (unconditionally) */
939 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
940 0, MLX4_MCAST_DISABLE);
941 if (err)
942 en_err(priv, "Failed disabling multicast filter\n");
943
944 /* Disable port VLAN filter */
945 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
946 if (err)
947 en_err(priv, "Failed disabling VLAN filter\n");
948 }
949 }
950
951 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
952 struct mlx4_en_dev *mdev)
953 {
954 int err = 0;
955
956 if (netif_msg_rx_status(priv))
957 en_warn(priv, "Leaving promiscuous mode\n");
958 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
959
960 /* Disable promiscouos mode */
961 switch (mdev->dev->caps.steering_mode) {
962 case MLX4_STEERING_MODE_DEVICE_MANAGED:
963 err = mlx4_flow_steer_promisc_remove(mdev->dev,
964 priv->port,
965 MLX4_FS_ALL_DEFAULT);
966 if (err)
967 en_err(priv, "Failed disabling promiscuous mode\n");
968 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
969 break;
970
971 case MLX4_STEERING_MODE_B0:
972 err = mlx4_unicast_promisc_remove(mdev->dev,
973 priv->base_qpn,
974 priv->port);
975 if (err)
976 en_err(priv, "Failed disabling unicast promiscuous mode\n");
977 /* Disable Multicast promisc */
978 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
979 err = mlx4_multicast_promisc_remove(mdev->dev,
980 priv->base_qpn,
981 priv->port);
982 if (err)
983 en_err(priv, "Failed disabling multicast promiscuous mode\n");
984 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
985 }
986 break;
987
988 case MLX4_STEERING_MODE_A0:
989 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
990 priv->port,
991 priv->base_qpn, 0);
992 if (err)
993 en_err(priv, "Failed disabling promiscuous mode\n");
994 break;
995 }
996
997 /* Enable port VLAN filter */
998 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
999 if (err)
1000 en_err(priv, "Failed enabling VLAN filter\n");
1001 }
1002
1003 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
1004 struct net_device *dev,
1005 struct mlx4_en_dev *mdev)
1006 {
1007 struct mlx4_en_mc_list *mclist, *tmp;
1008 u64 mcast_addr = 0;
1009 u8 mc_list[16] = {0};
1010 int err = 0;
1011
1012 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
1013 if (dev->flags & IFF_ALLMULTI) {
1014 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1015 0, MLX4_MCAST_DISABLE);
1016 if (err)
1017 en_err(priv, "Failed disabling multicast filter\n");
1018
1019 /* Add the default qp number as multicast promisc */
1020 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1021 switch (mdev->dev->caps.steering_mode) {
1022 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1023 err = mlx4_flow_steer_promisc_add(mdev->dev,
1024 priv->port,
1025 priv->base_qpn,
1026 MLX4_FS_MC_DEFAULT);
1027 break;
1028
1029 case MLX4_STEERING_MODE_B0:
1030 err = mlx4_multicast_promisc_add(mdev->dev,
1031 priv->base_qpn,
1032 priv->port);
1033 break;
1034
1035 case MLX4_STEERING_MODE_A0:
1036 break;
1037 }
1038 if (err)
1039 en_err(priv, "Failed entering multicast promisc mode\n");
1040 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1041 }
1042 } else {
1043 /* Disable Multicast promisc */
1044 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1045 switch (mdev->dev->caps.steering_mode) {
1046 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1047 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1048 priv->port,
1049 MLX4_FS_MC_DEFAULT);
1050 break;
1051
1052 case MLX4_STEERING_MODE_B0:
1053 err = mlx4_multicast_promisc_remove(mdev->dev,
1054 priv->base_qpn,
1055 priv->port);
1056 break;
1057
1058 case MLX4_STEERING_MODE_A0:
1059 break;
1060 }
1061 if (err)
1062 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1063 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1064 }
1065
1066 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1067 0, MLX4_MCAST_DISABLE);
1068 if (err)
1069 en_err(priv, "Failed disabling multicast filter\n");
1070
1071 /* Flush mcast filter and init it with broadcast address */
1072 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1073 1, MLX4_MCAST_CONFIG);
1074
1075 /* Update multicast list - we cache all addresses so they won't
1076 * change while HW is updated holding the command semaphor */
1077 netif_addr_lock_bh(dev);
1078 mlx4_en_cache_mclist(dev);
1079 netif_addr_unlock_bh(dev);
1080 list_for_each_entry(mclist, &priv->mc_list, list) {
1081 mcast_addr = mlx4_mac_to_u64(mclist->addr);
1082 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1083 mcast_addr, 0, MLX4_MCAST_CONFIG);
1084 }
1085 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1086 0, MLX4_MCAST_ENABLE);
1087 if (err)
1088 en_err(priv, "Failed enabling multicast filter\n");
1089
1090 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1091 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1092 if (mclist->action == MCLIST_REM) {
1093 /* detach this address and delete from list */
1094 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1095 mc_list[5] = priv->port;
1096 err = mlx4_multicast_detach(mdev->dev,
1097 &priv->rss_map.indir_qp,
1098 mc_list,
1099 MLX4_PROT_ETH,
1100 mclist->reg_id);
1101 if (err)
1102 en_err(priv, "Fail to detach multicast address\n");
1103
1104 if (mclist->tunnel_reg_id) {
1105 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1106 if (err)
1107 en_err(priv, "Failed to detach multicast address\n");
1108 }
1109
1110 /* remove from list */
1111 list_del(&mclist->list);
1112 kfree(mclist);
1113 } else if (mclist->action == MCLIST_ADD) {
1114 /* attach the address */
1115 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1116 /* needed for B0 steering support */
1117 mc_list[5] = priv->port;
1118 err = mlx4_multicast_attach(mdev->dev,
1119 &priv->rss_map.indir_qp,
1120 mc_list,
1121 priv->port, 0,
1122 MLX4_PROT_ETH,
1123 &mclist->reg_id);
1124 if (err)
1125 en_err(priv, "Fail to attach multicast address\n");
1126
1127 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1128 &mclist->tunnel_reg_id);
1129 if (err)
1130 en_err(priv, "Failed to attach multicast address\n");
1131 }
1132 }
1133 }
1134 }
1135
1136 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1137 struct net_device *dev,
1138 struct mlx4_en_dev *mdev)
1139 {
1140 struct netdev_hw_addr *ha;
1141 struct mlx4_mac_entry *entry;
1142 struct hlist_node *tmp;
1143 bool found;
1144 u64 mac;
1145 int err = 0;
1146 struct hlist_head *bucket;
1147 unsigned int i;
1148 int removed = 0;
1149 u32 prev_flags;
1150
1151 /* Note that we do not need to protect our mac_hash traversal with rcu,
1152 * since all modification code is protected by mdev->state_lock
1153 */
1154
1155 /* find what to remove */
1156 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1157 bucket = &priv->mac_hash[i];
1158 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1159 found = false;
1160 netdev_for_each_uc_addr(ha, dev) {
1161 if (ether_addr_equal_64bits(entry->mac,
1162 ha->addr)) {
1163 found = true;
1164 break;
1165 }
1166 }
1167
1168 /* MAC address of the port is not in uc list */
1169 if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1170 found = true;
1171
1172 if (!found) {
1173 mac = mlx4_mac_to_u64(entry->mac);
1174 mlx4_en_uc_steer_release(priv, entry->mac,
1175 priv->base_qpn,
1176 entry->reg_id);
1177 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1178
1179 hlist_del_rcu(&entry->hlist);
1180 kfree_rcu(entry, rcu);
1181 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1182 entry->mac, priv->port);
1183 ++removed;
1184 }
1185 }
1186 }
1187
1188 /* if we didn't remove anything, there is no use in trying to add
1189 * again once we are in a forced promisc mode state
1190 */
1191 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1192 return;
1193
1194 prev_flags = priv->flags;
1195 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1196
1197 /* find what to add */
1198 netdev_for_each_uc_addr(ha, dev) {
1199 found = false;
1200 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1201 hlist_for_each_entry(entry, bucket, hlist) {
1202 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1203 found = true;
1204 break;
1205 }
1206 }
1207
1208 if (!found) {
1209 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1210 if (!entry) {
1211 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1212 ha->addr, priv->port);
1213 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1214 break;
1215 }
1216 mac = mlx4_mac_to_u64(ha->addr);
1217 memcpy(entry->mac, ha->addr, ETH_ALEN);
1218 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1219 if (err < 0) {
1220 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1221 ha->addr, priv->port, err);
1222 kfree(entry);
1223 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1224 break;
1225 }
1226 err = mlx4_en_uc_steer_add(priv, ha->addr,
1227 &priv->base_qpn,
1228 &entry->reg_id);
1229 if (err) {
1230 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1231 ha->addr, priv->port, err);
1232 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1233 kfree(entry);
1234 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1235 break;
1236 } else {
1237 unsigned int mac_hash;
1238 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1239 ha->addr, priv->port);
1240 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1241 bucket = &priv->mac_hash[mac_hash];
1242 hlist_add_head_rcu(&entry->hlist, bucket);
1243 }
1244 }
1245 }
1246
1247 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1248 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1249 priv->port);
1250 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1251 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1252 priv->port);
1253 }
1254 }
1255
1256 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1257 {
1258 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1259 rx_mode_task);
1260 struct mlx4_en_dev *mdev = priv->mdev;
1261 struct net_device *dev = priv->dev;
1262
1263 mutex_lock(&mdev->state_lock);
1264 if (!mdev->device_up) {
1265 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1266 goto out;
1267 }
1268 if (!priv->port_up) {
1269 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1270 goto out;
1271 }
1272
1273 if (!netif_carrier_ok(dev)) {
1274 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1275 if (priv->port_state.link_state) {
1276 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1277 netif_carrier_on(dev);
1278 en_dbg(LINK, priv, "Link Up\n");
1279 }
1280 }
1281 }
1282
1283 if (dev->priv_flags & IFF_UNICAST_FLT)
1284 mlx4_en_do_uc_filter(priv, dev, mdev);
1285
1286 /* Promsicuous mode: disable all filters */
1287 if ((dev->flags & IFF_PROMISC) ||
1288 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1289 mlx4_en_set_promisc_mode(priv, mdev);
1290 goto out;
1291 }
1292
1293 /* Not in promiscuous mode */
1294 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1295 mlx4_en_clear_promisc_mode(priv, mdev);
1296
1297 mlx4_en_do_multicast(priv, dev, mdev);
1298 out:
1299 mutex_unlock(&mdev->state_lock);
1300 }
1301
1302 #ifdef CONFIG_NET_POLL_CONTROLLER
1303 static void mlx4_en_netpoll(struct net_device *dev)
1304 {
1305 struct mlx4_en_priv *priv = netdev_priv(dev);
1306 struct mlx4_en_cq *cq;
1307 unsigned long flags;
1308 int i;
1309
1310 for (i = 0; i < priv->rx_ring_num; i++) {
1311 cq = priv->rx_cq[i];
1312 spin_lock_irqsave(&cq->lock, flags);
1313 napi_synchronize(&cq->napi);
1314 mlx4_en_process_rx_cq(dev, cq, 0);
1315 spin_unlock_irqrestore(&cq->lock, flags);
1316 }
1317 }
1318 #endif
1319
1320 static void mlx4_en_tx_timeout(struct net_device *dev)
1321 {
1322 struct mlx4_en_priv *priv = netdev_priv(dev);
1323 struct mlx4_en_dev *mdev = priv->mdev;
1324 int i;
1325
1326 if (netif_msg_timer(priv))
1327 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1328
1329 for (i = 0; i < priv->tx_ring_num; i++) {
1330 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1331 continue;
1332 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1333 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1334 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1335 }
1336
1337 priv->port_stats.tx_timeout++;
1338 en_dbg(DRV, priv, "Scheduling watchdog\n");
1339 queue_work(mdev->workqueue, &priv->watchdog_task);
1340 }
1341
1342
1343 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1344 {
1345 struct mlx4_en_priv *priv = netdev_priv(dev);
1346
1347 spin_lock_bh(&priv->stats_lock);
1348 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1349 spin_unlock_bh(&priv->stats_lock);
1350
1351 return &priv->ret_stats;
1352 }
1353
1354 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1355 {
1356 struct mlx4_en_cq *cq;
1357 int i;
1358
1359 /* If we haven't received a specific coalescing setting
1360 * (module param), we set the moderation parameters as follows:
1361 * - moder_cnt is set to the number of mtu sized packets to
1362 * satisfy our coalescing target.
1363 * - moder_time is set to a fixed value.
1364 */
1365 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1366 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1367 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1368 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1369 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1370 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1371
1372 /* Setup cq moderation params */
1373 for (i = 0; i < priv->rx_ring_num; i++) {
1374 cq = priv->rx_cq[i];
1375 cq->moder_cnt = priv->rx_frames;
1376 cq->moder_time = priv->rx_usecs;
1377 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1378 priv->last_moder_packets[i] = 0;
1379 priv->last_moder_bytes[i] = 0;
1380 }
1381
1382 for (i = 0; i < priv->tx_ring_num; i++) {
1383 cq = priv->tx_cq[i];
1384 cq->moder_cnt = priv->tx_frames;
1385 cq->moder_time = priv->tx_usecs;
1386 }
1387
1388 /* Reset auto-moderation params */
1389 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1390 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1391 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1392 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1393 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1394 priv->adaptive_rx_coal = 1;
1395 priv->last_moder_jiffies = 0;
1396 priv->last_moder_tx_packets = 0;
1397 }
1398
1399 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1400 {
1401 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1402 struct mlx4_en_cq *cq;
1403 unsigned long packets;
1404 unsigned long rate;
1405 unsigned long avg_pkt_size;
1406 unsigned long rx_packets;
1407 unsigned long rx_bytes;
1408 unsigned long rx_pkt_diff;
1409 int moder_time;
1410 int ring, err;
1411
1412 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1413 return;
1414
1415 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1416 spin_lock_bh(&priv->stats_lock);
1417 rx_packets = priv->rx_ring[ring]->packets;
1418 rx_bytes = priv->rx_ring[ring]->bytes;
1419 spin_unlock_bh(&priv->stats_lock);
1420
1421 rx_pkt_diff = ((unsigned long) (rx_packets -
1422 priv->last_moder_packets[ring]));
1423 packets = rx_pkt_diff;
1424 rate = packets * HZ / period;
1425 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1426 priv->last_moder_bytes[ring])) / packets : 0;
1427
1428 /* Apply auto-moderation only when packet rate
1429 * exceeds a rate that it matters */
1430 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1431 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1432 if (rate < priv->pkt_rate_low)
1433 moder_time = priv->rx_usecs_low;
1434 else if (rate > priv->pkt_rate_high)
1435 moder_time = priv->rx_usecs_high;
1436 else
1437 moder_time = (rate - priv->pkt_rate_low) *
1438 (priv->rx_usecs_high - priv->rx_usecs_low) /
1439 (priv->pkt_rate_high - priv->pkt_rate_low) +
1440 priv->rx_usecs_low;
1441 } else {
1442 moder_time = priv->rx_usecs_low;
1443 }
1444
1445 if (moder_time != priv->last_moder_time[ring]) {
1446 priv->last_moder_time[ring] = moder_time;
1447 cq = priv->rx_cq[ring];
1448 cq->moder_time = moder_time;
1449 cq->moder_cnt = priv->rx_frames;
1450 err = mlx4_en_set_cq_moder(priv, cq);
1451 if (err)
1452 en_err(priv, "Failed modifying moderation for cq:%d\n",
1453 ring);
1454 }
1455 priv->last_moder_packets[ring] = rx_packets;
1456 priv->last_moder_bytes[ring] = rx_bytes;
1457 }
1458
1459 priv->last_moder_jiffies = jiffies;
1460 }
1461
1462 static void mlx4_en_do_get_stats(struct work_struct *work)
1463 {
1464 struct delayed_work *delay = to_delayed_work(work);
1465 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1466 stats_task);
1467 struct mlx4_en_dev *mdev = priv->mdev;
1468 int err;
1469
1470 mutex_lock(&mdev->state_lock);
1471 if (mdev->device_up) {
1472 if (priv->port_up) {
1473 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1474 if (err)
1475 en_dbg(HW, priv, "Could not update stats\n");
1476
1477 mlx4_en_auto_moderation(priv);
1478 }
1479
1480 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1481 }
1482 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1483 mlx4_en_do_set_mac(priv);
1484 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1485 }
1486 mutex_unlock(&mdev->state_lock);
1487 }
1488
1489 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1490 * periodically
1491 */
1492 static void mlx4_en_service_task(struct work_struct *work)
1493 {
1494 struct delayed_work *delay = to_delayed_work(work);
1495 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1496 service_task);
1497 struct mlx4_en_dev *mdev = priv->mdev;
1498
1499 mutex_lock(&mdev->state_lock);
1500 if (mdev->device_up) {
1501 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1502 mlx4_en_ptp_overflow_check(mdev);
1503
1504 queue_delayed_work(mdev->workqueue, &priv->service_task,
1505 SERVICE_TASK_DELAY);
1506 }
1507 mutex_unlock(&mdev->state_lock);
1508 }
1509
1510 static void mlx4_en_linkstate(struct work_struct *work)
1511 {
1512 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1513 linkstate_task);
1514 struct mlx4_en_dev *mdev = priv->mdev;
1515 int linkstate = priv->link_state;
1516
1517 mutex_lock(&mdev->state_lock);
1518 /* If observable port state changed set carrier state and
1519 * report to system log */
1520 if (priv->last_link_state != linkstate) {
1521 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1522 en_info(priv, "Link Down\n");
1523 netif_carrier_off(priv->dev);
1524 } else {
1525 en_info(priv, "Link Up\n");
1526 netif_carrier_on(priv->dev);
1527 }
1528 }
1529 priv->last_link_state = linkstate;
1530 mutex_unlock(&mdev->state_lock);
1531 }
1532
1533
1534 int mlx4_en_start_port(struct net_device *dev)
1535 {
1536 struct mlx4_en_priv *priv = netdev_priv(dev);
1537 struct mlx4_en_dev *mdev = priv->mdev;
1538 struct mlx4_en_cq *cq;
1539 struct mlx4_en_tx_ring *tx_ring;
1540 int rx_index = 0;
1541 int tx_index = 0;
1542 int err = 0;
1543 int i;
1544 int j;
1545 u8 mc_list[16] = {0};
1546
1547 if (priv->port_up) {
1548 en_dbg(DRV, priv, "start port called while port already up\n");
1549 return 0;
1550 }
1551
1552 INIT_LIST_HEAD(&priv->mc_list);
1553 INIT_LIST_HEAD(&priv->curr_list);
1554 INIT_LIST_HEAD(&priv->ethtool_list);
1555 memset(&priv->ethtool_rules[0], 0,
1556 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1557
1558 /* Calculate Rx buf size */
1559 dev->mtu = min(dev->mtu, priv->max_mtu);
1560 mlx4_en_calc_rx_buf(dev);
1561 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1562
1563 /* Configure rx cq's and rings */
1564 err = mlx4_en_activate_rx_rings(priv);
1565 if (err) {
1566 en_err(priv, "Failed to activate RX rings\n");
1567 return err;
1568 }
1569 for (i = 0; i < priv->rx_ring_num; i++) {
1570 cq = priv->rx_cq[i];
1571
1572 mlx4_en_cq_init_lock(cq);
1573
1574 err = mlx4_en_activate_cq(priv, cq, i);
1575 if (err) {
1576 en_err(priv, "Failed activating Rx CQ\n");
1577 goto cq_err;
1578 }
1579 for (j = 0; j < cq->size; j++)
1580 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1581 err = mlx4_en_set_cq_moder(priv, cq);
1582 if (err) {
1583 en_err(priv, "Failed setting cq moderation parameters");
1584 mlx4_en_deactivate_cq(priv, cq);
1585 goto cq_err;
1586 }
1587 mlx4_en_arm_cq(priv, cq);
1588 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1589 ++rx_index;
1590 }
1591
1592 /* Set qp number */
1593 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1594 err = mlx4_en_get_qp(priv);
1595 if (err) {
1596 en_err(priv, "Failed getting eth qp\n");
1597 goto cq_err;
1598 }
1599 mdev->mac_removed[priv->port] = 0;
1600
1601 err = mlx4_en_config_rss_steer(priv);
1602 if (err) {
1603 en_err(priv, "Failed configuring rss steering\n");
1604 goto mac_err;
1605 }
1606
1607 err = mlx4_en_create_drop_qp(priv);
1608 if (err)
1609 goto rss_err;
1610
1611 /* Configure tx cq's and rings */
1612 for (i = 0; i < priv->tx_ring_num; i++) {
1613 /* Configure cq */
1614 cq = priv->tx_cq[i];
1615 err = mlx4_en_activate_cq(priv, cq, i);
1616 if (err) {
1617 en_err(priv, "Failed allocating Tx CQ\n");
1618 goto tx_err;
1619 }
1620 err = mlx4_en_set_cq_moder(priv, cq);
1621 if (err) {
1622 en_err(priv, "Failed setting cq moderation parameters");
1623 mlx4_en_deactivate_cq(priv, cq);
1624 goto tx_err;
1625 }
1626 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1627 cq->buf->wqe_index = cpu_to_be16(0xffff);
1628
1629 /* Configure ring */
1630 tx_ring = priv->tx_ring[i];
1631 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1632 i / priv->num_tx_rings_p_up);
1633 if (err) {
1634 en_err(priv, "Failed allocating Tx ring\n");
1635 mlx4_en_deactivate_cq(priv, cq);
1636 goto tx_err;
1637 }
1638 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1639
1640 /* Arm CQ for TX completions */
1641 mlx4_en_arm_cq(priv, cq);
1642
1643 /* Set initial ownership of all Tx TXBBs to SW (1) */
1644 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1645 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1646 ++tx_index;
1647 }
1648
1649 /* Configure port */
1650 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1651 priv->rx_skb_size + ETH_FCS_LEN,
1652 priv->prof->tx_pause,
1653 priv->prof->tx_ppp,
1654 priv->prof->rx_pause,
1655 priv->prof->rx_ppp);
1656 if (err) {
1657 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1658 priv->port, err);
1659 goto tx_err;
1660 }
1661 /* Set default qp number */
1662 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1663 if (err) {
1664 en_err(priv, "Failed setting default qp numbers\n");
1665 goto tx_err;
1666 }
1667
1668 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1669 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1670 if (err) {
1671 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1672 err);
1673 goto tx_err;
1674 }
1675 }
1676
1677 /* Init port */
1678 en_dbg(HW, priv, "Initializing port\n");
1679 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1680 if (err) {
1681 en_err(priv, "Failed Initializing port\n");
1682 goto tx_err;
1683 }
1684
1685 /* Attach rx QP to bradcast address */
1686 memset(&mc_list[10], 0xff, ETH_ALEN);
1687 mc_list[5] = priv->port; /* needed for B0 steering support */
1688 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1689 priv->port, 0, MLX4_PROT_ETH,
1690 &priv->broadcast_id))
1691 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1692
1693 /* Must redo promiscuous mode setup. */
1694 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1695
1696 /* Schedule multicast task to populate multicast list */
1697 queue_work(mdev->workqueue, &priv->rx_mode_task);
1698
1699 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1700
1701 #ifdef CONFIG_MLX4_EN_VXLAN
1702 if (priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
1703 vxlan_get_rx_port(dev);
1704 #endif
1705 priv->port_up = true;
1706 netif_tx_start_all_queues(dev);
1707 netif_device_attach(dev);
1708
1709 return 0;
1710
1711 tx_err:
1712 while (tx_index--) {
1713 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1714 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1715 }
1716 mlx4_en_destroy_drop_qp(priv);
1717 rss_err:
1718 mlx4_en_release_rss_steer(priv);
1719 mac_err:
1720 mlx4_en_put_qp(priv);
1721 cq_err:
1722 while (rx_index--)
1723 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1724 for (i = 0; i < priv->rx_ring_num; i++)
1725 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1726
1727 return err; /* need to close devices */
1728 }
1729
1730
1731 void mlx4_en_stop_port(struct net_device *dev, int detach)
1732 {
1733 struct mlx4_en_priv *priv = netdev_priv(dev);
1734 struct mlx4_en_dev *mdev = priv->mdev;
1735 struct mlx4_en_mc_list *mclist, *tmp;
1736 struct ethtool_flow_id *flow, *tmp_flow;
1737 int i;
1738 u8 mc_list[16] = {0};
1739
1740 if (!priv->port_up) {
1741 en_dbg(DRV, priv, "stop port called while port already down\n");
1742 return;
1743 }
1744
1745 /* close port*/
1746 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1747
1748 /* Synchronize with tx routine */
1749 netif_tx_lock_bh(dev);
1750 if (detach)
1751 netif_device_detach(dev);
1752 netif_tx_stop_all_queues(dev);
1753 netif_tx_unlock_bh(dev);
1754
1755 netif_tx_disable(dev);
1756
1757 /* Set port as not active */
1758 priv->port_up = false;
1759
1760 /* Promsicuous mode */
1761 if (mdev->dev->caps.steering_mode ==
1762 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1763 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1764 MLX4_EN_FLAG_MC_PROMISC);
1765 mlx4_flow_steer_promisc_remove(mdev->dev,
1766 priv->port,
1767 MLX4_FS_ALL_DEFAULT);
1768 mlx4_flow_steer_promisc_remove(mdev->dev,
1769 priv->port,
1770 MLX4_FS_MC_DEFAULT);
1771 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1772 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1773
1774 /* Disable promiscouos mode */
1775 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1776 priv->port);
1777
1778 /* Disable Multicast promisc */
1779 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1780 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1781 priv->port);
1782 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1783 }
1784 }
1785
1786 /* Detach All multicasts */
1787 memset(&mc_list[10], 0xff, ETH_ALEN);
1788 mc_list[5] = priv->port; /* needed for B0 steering support */
1789 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1790 MLX4_PROT_ETH, priv->broadcast_id);
1791 list_for_each_entry(mclist, &priv->curr_list, list) {
1792 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1793 mc_list[5] = priv->port;
1794 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1795 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1796 if (mclist->tunnel_reg_id)
1797 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1798 }
1799 mlx4_en_clear_list(dev);
1800 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1801 list_del(&mclist->list);
1802 kfree(mclist);
1803 }
1804
1805 /* Flush multicast filter */
1806 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1807
1808 /* Remove flow steering rules for the port*/
1809 if (mdev->dev->caps.steering_mode ==
1810 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1811 ASSERT_RTNL();
1812 list_for_each_entry_safe(flow, tmp_flow,
1813 &priv->ethtool_list, list) {
1814 mlx4_flow_detach(mdev->dev, flow->id);
1815 list_del(&flow->list);
1816 }
1817 }
1818
1819 mlx4_en_destroy_drop_qp(priv);
1820
1821 /* Free TX Rings */
1822 for (i = 0; i < priv->tx_ring_num; i++) {
1823 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1824 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1825 }
1826 msleep(10);
1827
1828 for (i = 0; i < priv->tx_ring_num; i++)
1829 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1830
1831 /* Free RSS qps */
1832 mlx4_en_release_rss_steer(priv);
1833
1834 /* Unregister Mac address for the port */
1835 mlx4_en_put_qp(priv);
1836 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1837 mdev->mac_removed[priv->port] = 1;
1838
1839 /* Free RX Rings */
1840 for (i = 0; i < priv->rx_ring_num; i++) {
1841 struct mlx4_en_cq *cq = priv->rx_cq[i];
1842
1843 local_bh_disable();
1844 while (!mlx4_en_cq_lock_napi(cq)) {
1845 pr_info("CQ %d locked\n", i);
1846 mdelay(1);
1847 }
1848 local_bh_enable();
1849
1850 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1851 msleep(1);
1852 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1853 mlx4_en_deactivate_cq(priv, cq);
1854 }
1855 }
1856
1857 static void mlx4_en_restart(struct work_struct *work)
1858 {
1859 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1860 watchdog_task);
1861 struct mlx4_en_dev *mdev = priv->mdev;
1862 struct net_device *dev = priv->dev;
1863
1864 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1865
1866 mutex_lock(&mdev->state_lock);
1867 if (priv->port_up) {
1868 mlx4_en_stop_port(dev, 1);
1869 if (mlx4_en_start_port(dev))
1870 en_err(priv, "Failed restarting port %d\n", priv->port);
1871 }
1872 mutex_unlock(&mdev->state_lock);
1873 }
1874
1875 static void mlx4_en_clear_stats(struct net_device *dev)
1876 {
1877 struct mlx4_en_priv *priv = netdev_priv(dev);
1878 struct mlx4_en_dev *mdev = priv->mdev;
1879 int i;
1880
1881 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1882 en_dbg(HW, priv, "Failed dumping statistics\n");
1883
1884 memset(&priv->stats, 0, sizeof(priv->stats));
1885 memset(&priv->pstats, 0, sizeof(priv->pstats));
1886 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1887 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1888
1889 for (i = 0; i < priv->tx_ring_num; i++) {
1890 priv->tx_ring[i]->bytes = 0;
1891 priv->tx_ring[i]->packets = 0;
1892 priv->tx_ring[i]->tx_csum = 0;
1893 }
1894 for (i = 0; i < priv->rx_ring_num; i++) {
1895 priv->rx_ring[i]->bytes = 0;
1896 priv->rx_ring[i]->packets = 0;
1897 priv->rx_ring[i]->csum_ok = 0;
1898 priv->rx_ring[i]->csum_none = 0;
1899 }
1900 }
1901
1902 static int mlx4_en_open(struct net_device *dev)
1903 {
1904 struct mlx4_en_priv *priv = netdev_priv(dev);
1905 struct mlx4_en_dev *mdev = priv->mdev;
1906 int err = 0;
1907
1908 mutex_lock(&mdev->state_lock);
1909
1910 if (!mdev->device_up) {
1911 en_err(priv, "Cannot open - device down/disabled\n");
1912 err = -EBUSY;
1913 goto out;
1914 }
1915
1916 /* Reset HW statistics and SW counters */
1917 mlx4_en_clear_stats(dev);
1918
1919 err = mlx4_en_start_port(dev);
1920 if (err)
1921 en_err(priv, "Failed starting port:%d\n", priv->port);
1922
1923 out:
1924 mutex_unlock(&mdev->state_lock);
1925 return err;
1926 }
1927
1928
1929 static int mlx4_en_close(struct net_device *dev)
1930 {
1931 struct mlx4_en_priv *priv = netdev_priv(dev);
1932 struct mlx4_en_dev *mdev = priv->mdev;
1933
1934 en_dbg(IFDOWN, priv, "Close port called\n");
1935
1936 mutex_lock(&mdev->state_lock);
1937
1938 mlx4_en_stop_port(dev, 0);
1939 netif_carrier_off(dev);
1940
1941 mutex_unlock(&mdev->state_lock);
1942 return 0;
1943 }
1944
1945 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1946 {
1947 int i;
1948
1949 #ifdef CONFIG_RFS_ACCEL
1950 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1951 priv->dev->rx_cpu_rmap = NULL;
1952 #endif
1953
1954 for (i = 0; i < priv->tx_ring_num; i++) {
1955 if (priv->tx_ring && priv->tx_ring[i])
1956 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1957 if (priv->tx_cq && priv->tx_cq[i])
1958 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1959 }
1960
1961 for (i = 0; i < priv->rx_ring_num; i++) {
1962 if (priv->rx_ring[i])
1963 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1964 priv->prof->rx_ring_size, priv->stride);
1965 if (priv->rx_cq[i])
1966 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1967 }
1968
1969 if (priv->base_tx_qpn) {
1970 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1971 priv->base_tx_qpn = 0;
1972 }
1973 }
1974
1975 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1976 {
1977 struct mlx4_en_port_profile *prof = priv->prof;
1978 int i;
1979 int err;
1980 int node;
1981
1982 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1983 if (err) {
1984 en_err(priv, "failed reserving range for TX rings\n");
1985 return err;
1986 }
1987
1988 /* Create tx Rings */
1989 for (i = 0; i < priv->tx_ring_num; i++) {
1990 node = cpu_to_node(i % num_online_cpus());
1991 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1992 prof->tx_ring_size, i, TX, node))
1993 goto err;
1994
1995 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1996 priv->base_tx_qpn + i,
1997 prof->tx_ring_size, TXBB_SIZE,
1998 node, i))
1999 goto err;
2000 }
2001
2002 /* Create rx Rings */
2003 for (i = 0; i < priv->rx_ring_num; i++) {
2004 node = cpu_to_node(i % num_online_cpus());
2005 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2006 prof->rx_ring_size, i, RX, node))
2007 goto err;
2008
2009 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2010 prof->rx_ring_size, priv->stride,
2011 node))
2012 goto err;
2013 }
2014
2015 #ifdef CONFIG_RFS_ACCEL
2016 if (priv->mdev->dev->caps.comp_pool) {
2017 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
2018 if (!priv->dev->rx_cpu_rmap)
2019 goto err;
2020 }
2021 #endif
2022
2023 return 0;
2024
2025 err:
2026 en_err(priv, "Failed to allocate NIC resources\n");
2027 for (i = 0; i < priv->rx_ring_num; i++) {
2028 if (priv->rx_ring[i])
2029 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2030 prof->rx_ring_size,
2031 priv->stride);
2032 if (priv->rx_cq[i])
2033 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2034 }
2035 for (i = 0; i < priv->tx_ring_num; i++) {
2036 if (priv->tx_ring[i])
2037 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2038 if (priv->tx_cq[i])
2039 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2040 }
2041 return -ENOMEM;
2042 }
2043
2044
2045 void mlx4_en_destroy_netdev(struct net_device *dev)
2046 {
2047 struct mlx4_en_priv *priv = netdev_priv(dev);
2048 struct mlx4_en_dev *mdev = priv->mdev;
2049
2050 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2051
2052 /* Unregister device - this will close the port if it was up */
2053 if (priv->registered)
2054 unregister_netdev(dev);
2055
2056 if (priv->allocated)
2057 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2058
2059 cancel_delayed_work(&priv->stats_task);
2060 cancel_delayed_work(&priv->service_task);
2061 /* flush any pending task for this netdev */
2062 flush_workqueue(mdev->workqueue);
2063
2064 /* Detach the netdev so tasks would not attempt to access it */
2065 mutex_lock(&mdev->state_lock);
2066 mdev->pndev[priv->port] = NULL;
2067 mutex_unlock(&mdev->state_lock);
2068
2069 mlx4_en_free_resources(priv);
2070
2071 kfree(priv->tx_ring);
2072 kfree(priv->tx_cq);
2073
2074 free_netdev(dev);
2075 }
2076
2077 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2078 {
2079 struct mlx4_en_priv *priv = netdev_priv(dev);
2080 struct mlx4_en_dev *mdev = priv->mdev;
2081 int err = 0;
2082
2083 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2084 dev->mtu, new_mtu);
2085
2086 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2087 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2088 return -EPERM;
2089 }
2090 dev->mtu = new_mtu;
2091
2092 if (netif_running(dev)) {
2093 mutex_lock(&mdev->state_lock);
2094 if (!mdev->device_up) {
2095 /* NIC is probably restarting - let watchdog task reset
2096 * the port */
2097 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2098 } else {
2099 mlx4_en_stop_port(dev, 1);
2100 err = mlx4_en_start_port(dev);
2101 if (err) {
2102 en_err(priv, "Failed restarting port:%d\n",
2103 priv->port);
2104 queue_work(mdev->workqueue, &priv->watchdog_task);
2105 }
2106 }
2107 mutex_unlock(&mdev->state_lock);
2108 }
2109 return 0;
2110 }
2111
2112 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2113 {
2114 struct mlx4_en_priv *priv = netdev_priv(dev);
2115 struct mlx4_en_dev *mdev = priv->mdev;
2116 struct hwtstamp_config config;
2117
2118 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2119 return -EFAULT;
2120
2121 /* reserved for future extensions */
2122 if (config.flags)
2123 return -EINVAL;
2124
2125 /* device doesn't support time stamping */
2126 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2127 return -EINVAL;
2128
2129 /* TX HW timestamp */
2130 switch (config.tx_type) {
2131 case HWTSTAMP_TX_OFF:
2132 case HWTSTAMP_TX_ON:
2133 break;
2134 default:
2135 return -ERANGE;
2136 }
2137
2138 /* RX HW timestamp */
2139 switch (config.rx_filter) {
2140 case HWTSTAMP_FILTER_NONE:
2141 break;
2142 case HWTSTAMP_FILTER_ALL:
2143 case HWTSTAMP_FILTER_SOME:
2144 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2145 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2146 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2147 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2148 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2149 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2150 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2151 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2152 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2153 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2154 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2155 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2156 config.rx_filter = HWTSTAMP_FILTER_ALL;
2157 break;
2158 default:
2159 return -ERANGE;
2160 }
2161
2162 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2163 config.tx_type = HWTSTAMP_TX_OFF;
2164 config.rx_filter = HWTSTAMP_FILTER_NONE;
2165 }
2166
2167 return copy_to_user(ifr->ifr_data, &config,
2168 sizeof(config)) ? -EFAULT : 0;
2169 }
2170
2171 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2172 {
2173 struct mlx4_en_priv *priv = netdev_priv(dev);
2174
2175 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2176 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2177 }
2178
2179 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2180 {
2181 switch (cmd) {
2182 case SIOCSHWTSTAMP:
2183 return mlx4_en_hwtstamp_set(dev, ifr);
2184 case SIOCGHWTSTAMP:
2185 return mlx4_en_hwtstamp_get(dev, ifr);
2186 default:
2187 return -EOPNOTSUPP;
2188 }
2189 }
2190
2191 static int mlx4_en_set_features(struct net_device *netdev,
2192 netdev_features_t features)
2193 {
2194 struct mlx4_en_priv *priv = netdev_priv(netdev);
2195
2196 if (features & NETIF_F_LOOPBACK)
2197 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2198 else
2199 priv->ctrl_flags &=
2200 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2201
2202 mlx4_en_update_loopback_state(netdev, features);
2203
2204 return 0;
2205
2206 }
2207
2208 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2209 {
2210 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2211 struct mlx4_en_dev *mdev = en_priv->mdev;
2212 u64 mac_u64 = mlx4_mac_to_u64(mac);
2213
2214 if (!is_valid_ether_addr(mac))
2215 return -EINVAL;
2216
2217 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2218 }
2219
2220 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2221 {
2222 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2223 struct mlx4_en_dev *mdev = en_priv->mdev;
2224
2225 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2226 }
2227
2228 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2229 {
2230 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2231 struct mlx4_en_dev *mdev = en_priv->mdev;
2232
2233 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2234 }
2235
2236 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2237 {
2238 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2239 struct mlx4_en_dev *mdev = en_priv->mdev;
2240
2241 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2242 }
2243
2244 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2245 {
2246 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2247 struct mlx4_en_dev *mdev = en_priv->mdev;
2248
2249 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2250 }
2251
2252 #define PORT_ID_BYTE_LEN 8
2253 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2254 struct netdev_phys_port_id *ppid)
2255 {
2256 struct mlx4_en_priv *priv = netdev_priv(dev);
2257 struct mlx4_dev *mdev = priv->mdev->dev;
2258 int i;
2259 u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2260
2261 if (!phys_port_id)
2262 return -EOPNOTSUPP;
2263
2264 ppid->id_len = sizeof(phys_port_id);
2265 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2266 ppid->id[i] = phys_port_id & 0xff;
2267 phys_port_id >>= 8;
2268 }
2269 return 0;
2270 }
2271
2272 #ifdef CONFIG_MLX4_EN_VXLAN
2273 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2274 {
2275 int ret;
2276 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2277 vxlan_add_task);
2278
2279 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2280 if (ret)
2281 goto out;
2282
2283 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2284 VXLAN_STEER_BY_OUTER_MAC, 1);
2285 out:
2286 if (ret)
2287 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2288 }
2289
2290 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2291 {
2292 int ret;
2293 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2294 vxlan_del_task);
2295
2296 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2297 VXLAN_STEER_BY_OUTER_MAC, 0);
2298 if (ret)
2299 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2300
2301 priv->vxlan_port = 0;
2302 }
2303
2304 static void mlx4_en_add_vxlan_port(struct net_device *dev,
2305 sa_family_t sa_family, __be16 port)
2306 {
2307 struct mlx4_en_priv *priv = netdev_priv(dev);
2308 __be16 current_port;
2309
2310 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS))
2311 return;
2312
2313 if (sa_family == AF_INET6)
2314 return;
2315
2316 current_port = priv->vxlan_port;
2317 if (current_port && current_port != port) {
2318 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2319 ntohs(current_port), ntohs(port));
2320 return;
2321 }
2322
2323 priv->vxlan_port = port;
2324 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2325 }
2326
2327 static void mlx4_en_del_vxlan_port(struct net_device *dev,
2328 sa_family_t sa_family, __be16 port)
2329 {
2330 struct mlx4_en_priv *priv = netdev_priv(dev);
2331 __be16 current_port;
2332
2333 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2334 return;
2335
2336 if (sa_family == AF_INET6)
2337 return;
2338
2339 current_port = priv->vxlan_port;
2340 if (current_port != port) {
2341 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2342 return;
2343 }
2344
2345 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2346 }
2347 #endif
2348
2349 static const struct net_device_ops mlx4_netdev_ops = {
2350 .ndo_open = mlx4_en_open,
2351 .ndo_stop = mlx4_en_close,
2352 .ndo_start_xmit = mlx4_en_xmit,
2353 .ndo_select_queue = mlx4_en_select_queue,
2354 .ndo_get_stats = mlx4_en_get_stats,
2355 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2356 .ndo_set_mac_address = mlx4_en_set_mac,
2357 .ndo_validate_addr = eth_validate_addr,
2358 .ndo_change_mtu = mlx4_en_change_mtu,
2359 .ndo_do_ioctl = mlx4_en_ioctl,
2360 .ndo_tx_timeout = mlx4_en_tx_timeout,
2361 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2362 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2363 #ifdef CONFIG_NET_POLL_CONTROLLER
2364 .ndo_poll_controller = mlx4_en_netpoll,
2365 #endif
2366 .ndo_set_features = mlx4_en_set_features,
2367 .ndo_setup_tc = mlx4_en_setup_tc,
2368 #ifdef CONFIG_RFS_ACCEL
2369 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2370 #endif
2371 #ifdef CONFIG_NET_RX_BUSY_POLL
2372 .ndo_busy_poll = mlx4_en_low_latency_recv,
2373 #endif
2374 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2375 #ifdef CONFIG_MLX4_EN_VXLAN
2376 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
2377 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
2378 #endif
2379 };
2380
2381 static const struct net_device_ops mlx4_netdev_ops_master = {
2382 .ndo_open = mlx4_en_open,
2383 .ndo_stop = mlx4_en_close,
2384 .ndo_start_xmit = mlx4_en_xmit,
2385 .ndo_select_queue = mlx4_en_select_queue,
2386 .ndo_get_stats = mlx4_en_get_stats,
2387 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2388 .ndo_set_mac_address = mlx4_en_set_mac,
2389 .ndo_validate_addr = eth_validate_addr,
2390 .ndo_change_mtu = mlx4_en_change_mtu,
2391 .ndo_tx_timeout = mlx4_en_tx_timeout,
2392 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2393 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2394 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2395 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2396 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2397 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2398 .ndo_get_vf_config = mlx4_en_get_vf_config,
2399 #ifdef CONFIG_NET_POLL_CONTROLLER
2400 .ndo_poll_controller = mlx4_en_netpoll,
2401 #endif
2402 .ndo_set_features = mlx4_en_set_features,
2403 .ndo_setup_tc = mlx4_en_setup_tc,
2404 #ifdef CONFIG_RFS_ACCEL
2405 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2406 #endif
2407 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2408 };
2409
2410 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2411 struct mlx4_en_port_profile *prof)
2412 {
2413 struct net_device *dev;
2414 struct mlx4_en_priv *priv;
2415 int i;
2416 int err;
2417 u64 mac_u64;
2418
2419 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2420 MAX_TX_RINGS, MAX_RX_RINGS);
2421 if (dev == NULL)
2422 return -ENOMEM;
2423
2424 netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2425 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2426
2427 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2428 dev->dev_port = port - 1;
2429
2430 /*
2431 * Initialize driver private data
2432 */
2433
2434 priv = netdev_priv(dev);
2435 memset(priv, 0, sizeof(struct mlx4_en_priv));
2436 priv->dev = dev;
2437 priv->mdev = mdev;
2438 priv->ddev = &mdev->pdev->dev;
2439 priv->prof = prof;
2440 priv->port = port;
2441 priv->port_up = false;
2442 priv->flags = prof->flags;
2443 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2444 MLX4_WQE_CTRL_SOLICITED);
2445 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2446 priv->tx_ring_num = prof->tx_ring_num;
2447
2448 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2449 GFP_KERNEL);
2450 if (!priv->tx_ring) {
2451 err = -ENOMEM;
2452 goto out;
2453 }
2454 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2455 GFP_KERNEL);
2456 if (!priv->tx_cq) {
2457 err = -ENOMEM;
2458 goto out;
2459 }
2460 priv->rx_ring_num = prof->rx_ring_num;
2461 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2462 priv->mac_index = -1;
2463 priv->msg_enable = MLX4_EN_MSG_LEVEL;
2464 spin_lock_init(&priv->stats_lock);
2465 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2466 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2467 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2468 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2469 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2470 #ifdef CONFIG_MLX4_EN_VXLAN
2471 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2472 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2473 #endif
2474 #ifdef CONFIG_MLX4_EN_DCB
2475 if (!mlx4_is_slave(priv->mdev->dev)) {
2476 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2477 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2478 } else {
2479 en_info(priv, "enabling only PFC DCB ops\n");
2480 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2481 }
2482 }
2483 #endif
2484
2485 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2486 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2487
2488 /* Query for default mac and max mtu */
2489 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2490
2491 /* Set default MAC */
2492 dev->addr_len = ETH_ALEN;
2493 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2494 if (!is_valid_ether_addr(dev->dev_addr)) {
2495 if (mlx4_is_slave(priv->mdev->dev)) {
2496 eth_hw_addr_random(dev);
2497 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2498 mac_u64 = mlx4_mac_to_u64(dev->dev_addr);
2499 mdev->dev->caps.def_mac[priv->port] = mac_u64;
2500 } else {
2501 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2502 priv->port, dev->dev_addr);
2503 err = -EINVAL;
2504 goto out;
2505 }
2506 }
2507
2508 memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2509
2510 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2511 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2512 err = mlx4_en_alloc_resources(priv);
2513 if (err)
2514 goto out;
2515
2516 #ifdef CONFIG_RFS_ACCEL
2517 INIT_LIST_HEAD(&priv->filters);
2518 spin_lock_init(&priv->filters_lock);
2519 #endif
2520
2521 /* Initialize time stamping config */
2522 priv->hwtstamp_config.flags = 0;
2523 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2524 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2525
2526 /* Allocate page for receive rings */
2527 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2528 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2529 if (err) {
2530 en_err(priv, "Failed to allocate page for rx qps\n");
2531 goto out;
2532 }
2533 priv->allocated = 1;
2534
2535 /*
2536 * Initialize netdev entry points
2537 */
2538 if (mlx4_is_master(priv->mdev->dev))
2539 dev->netdev_ops = &mlx4_netdev_ops_master;
2540 else
2541 dev->netdev_ops = &mlx4_netdev_ops;
2542 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2543 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2544 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2545
2546 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
2547
2548 /*
2549 * Set driver features
2550 */
2551 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2552 if (mdev->LSO_support)
2553 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2554
2555 dev->vlan_features = dev->hw_features;
2556
2557 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2558 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2559 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2560 NETIF_F_HW_VLAN_CTAG_FILTER;
2561 dev->hw_features |= NETIF_F_LOOPBACK;
2562
2563 if (mdev->dev->caps.steering_mode ==
2564 MLX4_STEERING_MODE_DEVICE_MANAGED)
2565 dev->hw_features |= NETIF_F_NTUPLE;
2566
2567 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2568 dev->priv_flags |= IFF_UNICAST_FLT;
2569
2570 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2571 dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2572 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
2573 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
2574 dev->features |= NETIF_F_GSO_UDP_TUNNEL;
2575 }
2576
2577 mdev->pndev[port] = dev;
2578
2579 netif_carrier_off(dev);
2580 mlx4_en_set_default_moderation(priv);
2581
2582 err = register_netdev(dev);
2583 if (err) {
2584 en_err(priv, "Netdev registration failed for port %d\n", port);
2585 goto out;
2586 }
2587 priv->registered = 1;
2588
2589 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2590 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2591
2592 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2593
2594 /* Configure port */
2595 mlx4_en_calc_rx_buf(dev);
2596 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2597 priv->rx_skb_size + ETH_FCS_LEN,
2598 prof->tx_pause, prof->tx_ppp,
2599 prof->rx_pause, prof->rx_ppp);
2600 if (err) {
2601 en_err(priv, "Failed setting port general configurations "
2602 "for port %d, with error %d\n", priv->port, err);
2603 goto out;
2604 }
2605
2606 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2607 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
2608 if (err) {
2609 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
2610 err);
2611 goto out;
2612 }
2613 }
2614
2615 /* Init port */
2616 en_warn(priv, "Initializing port\n");
2617 err = mlx4_INIT_PORT(mdev->dev, priv->port);
2618 if (err) {
2619 en_err(priv, "Failed Initializing port\n");
2620 goto out;
2621 }
2622 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2623
2624 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2625 queue_delayed_work(mdev->workqueue, &priv->service_task,
2626 SERVICE_TASK_DELAY);
2627
2628 return 0;
2629
2630 out:
2631 mlx4_en_destroy_netdev(dev);
2632 return err;
2633 }
2634
Linux kernel - Deliverables
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