2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
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>
41 #include <net/busy_poll.h>
43 #include <linux/mlx4/driver.h>
44 #include <linux/mlx4/device.h>
45 #include <linux/mlx4/cmd.h>
46 #include <linux/mlx4/cq.h>
51 int mlx4_en_setup_tc(struct net_device
*dev
, u8 up
)
53 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
55 unsigned int offset
= 0;
57 if (up
&& up
!= MLX4_EN_NUM_UP
)
60 netdev_set_num_tc(dev
, up
);
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
;
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
)
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
];
82 return LL_FLUSH_FAILED
;
84 if (!mlx4_en_cq_lock_poll(cq
))
87 done
= mlx4_en_process_rx_cq(dev
, cq
, 4);
89 rx_ring
->cleaned
+= done
;
93 mlx4_en_cq_unlock_poll(cq
);
97 #endif /* CONFIG_NET_RX_BUSY_POLL */
99 #ifdef CONFIG_RFS_ACCEL
101 struct mlx4_en_filter
{
102 struct list_head next
;
103 struct work_struct work
;
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
119 struct hlist_node filter_chain
;
122 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv
*priv
);
124 static enum mlx4_net_trans_rule_id
mlx4_ip_proto_to_trans_rule_id(u8 ip_proto
)
128 return MLX4_NET_TRANS_RULE_ID_UDP
;
130 return MLX4_NET_TRANS_RULE_ID_TCP
;
132 return -EPROTONOSUPPORT
;
136 static void mlx4_en_filter_work(struct work_struct
*work
)
138 struct mlx4_en_filter
*filter
= container_of(work
,
139 struct mlx4_en_filter
,
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
),
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,
153 struct mlx4_spec_list spec_ip
= {
154 .id
= MLX4_NET_TRANS_RULE_ID_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,
164 struct mlx4_spec_list spec_eth
= {
165 .id
= MLX4_NET_TRANS_RULE_ID_ETH
,
167 struct mlx4_net_trans_rule rule
= {
168 .list
= LIST_HEAD_INIT(rule
.list
),
169 .queue_mode
= MLX4_NET_TRANS_Q_LIFO
,
172 .promisc_mode
= MLX4_FS_REGULAR
,
174 .priority
= MLX4_DOMAIN_RFS
,
177 __be64 mac_mask
= cpu_to_be64(MLX4_MAC_MASK
<< 16);
179 if (spec_tcp_udp
.id
< 0) {
180 en_warn(priv
, "RFS: ignoring unsupported ip protocol (%d)\n",
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
);
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
);
192 filter
->activated
= 0;
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
);
200 rc
= mlx4_flow_attach(priv
->mdev
->dev
, &rule
, &filter
->reg_id
);
202 en_err(priv
, "Error attaching flow. err = %d\n", rc
);
205 mlx4_en_filter_rfs_expire(priv
);
207 filter
->activated
= 1;
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
)
217 l
= (__force
unsigned long)src_port
|
218 ((__force
unsigned long)dst_port
<< 2);
219 l
^= (__force
unsigned long)(src_ip
^ dst_ip
);
221 bucket_idx
= hash_long(l
, MLX4_EN_FILTER_HASH_SHIFT
);
223 return &priv
->filter_hash
[bucket_idx
];
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
)
231 struct mlx4_en_filter
*filter
= NULL
;
233 filter
= kzalloc(sizeof(struct mlx4_en_filter
), GFP_ATOMIC
);
238 filter
->rxq_index
= rxq_index
;
239 INIT_WORK(&filter
->work
, mlx4_en_filter_work
);
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
;
247 filter
->flow_id
= flow_id
;
249 filter
->id
= priv
->last_filter_id
++ % RPS_NO_FILTER
;
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
,
259 static void mlx4_en_filter_free(struct mlx4_en_filter
*filter
)
261 struct mlx4_en_priv
*priv
= filter
->priv
;
264 list_del(&filter
->next
);
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
);
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
)
277 struct mlx4_en_filter
*filter
;
278 struct mlx4_en_filter
*ret
= NULL
;
280 hlist_for_each_entry(filter
,
281 filter_hash_bucket(priv
, src_ip
, dst_ip
,
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
) {
298 mlx4_en_filter_rfs(struct net_device
*net_dev
, const struct sk_buff
*skb
,
299 u16 rxq_index
, u32 flow_id
)
301 struct mlx4_en_priv
*priv
= netdev_priv(net_dev
);
302 struct mlx4_en_filter
*filter
;
303 const struct iphdr
*ip
;
310 int nhoff
= skb_network_offset(skb
);
313 if (skb
->protocol
!= htons(ETH_P_IP
))
314 return -EPROTONOSUPPORT
;
316 ip
= (const struct iphdr
*)(skb
->data
+ nhoff
);
317 if (ip_is_fragment(ip
))
318 return -EPROTONOSUPPORT
;
320 if ((ip
->protocol
!= IPPROTO_TCP
) && (ip
->protocol
!= IPPROTO_UDP
))
321 return -EPROTONOSUPPORT
;
322 ports
= (const __be16
*)(skb
->data
+ nhoff
+ 4 * ip
->ihl
);
324 ip_proto
= ip
->protocol
;
330 spin_lock_bh(&priv
->filters_lock
);
331 filter
= mlx4_en_filter_find(priv
, src_ip
, dst_ip
, ip_proto
,
334 if (filter
->rxq_index
== rxq_index
)
337 filter
->rxq_index
= rxq_index
;
339 filter
= mlx4_en_filter_alloc(priv
, rxq_index
,
340 src_ip
, dst_ip
, ip_proto
,
341 src_port
, dst_port
, flow_id
);
348 queue_work(priv
->mdev
->workqueue
, &filter
->work
);
353 spin_unlock_bh(&priv
->filters_lock
);
358 void mlx4_en_cleanup_filters(struct mlx4_en_priv
*priv
)
360 struct mlx4_en_filter
*filter
, *tmp
;
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
);
368 spin_unlock_bh(&priv
->filters_lock
);
370 list_for_each_entry_safe(filter
, tmp
, &del_list
, next
) {
371 cancel_work_sync(&filter
->work
);
372 mlx4_en_filter_free(filter
);
376 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv
*priv
)
378 struct mlx4_en_filter
*filter
= NULL
, *tmp
, *last_filter
= NULL
;
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
)
387 if (filter
->activated
&&
388 !work_pending(&filter
->work
) &&
389 rps_may_expire_flow(priv
->dev
,
390 filter
->rxq_index
, filter
->flow_id
,
392 list_move(&filter
->next
, &del_list
);
393 hlist_del(&filter
->filter_chain
);
395 last_filter
= filter
;
400 if (last_filter
&& (&last_filter
->next
!= priv
->filters
.next
))
401 list_move(&priv
->filters
, &last_filter
->next
);
403 spin_unlock_bh(&priv
->filters_lock
);
405 list_for_each_entry_safe(filter
, tmp
, &del_list
, next
)
406 mlx4_en_filter_free(filter
);
410 static int mlx4_en_vlan_rx_add_vid(struct net_device
*dev
,
411 __be16 proto
, u16 vid
)
413 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
414 struct mlx4_en_dev
*mdev
= priv
->mdev
;
418 en_dbg(HW
, priv
, "adding VLAN:%d\n", vid
);
420 set_bit(vid
, priv
->active_vlans
);
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
);
427 en_err(priv
, "Failed configuring VLAN filter\n");
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
);
436 static int mlx4_en_vlan_rx_kill_vid(struct net_device
*dev
,
437 __be16 proto
, u16 vid
)
439 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
440 struct mlx4_en_dev
*mdev
= priv
->mdev
;
443 en_dbg(HW
, priv
, "Killing VID:%d\n", vid
);
445 clear_bit(vid
, priv
->active_vlans
);
447 /* Remove VID from port VLAN filter */
448 mutex_lock(&mdev
->state_lock
);
449 mlx4_unregister_vlan(mdev
->dev
, priv
->port
, vid
);
451 if (mdev
->device_up
&& priv
->port_up
) {
452 err
= mlx4_SET_VLAN_FLTR(mdev
->dev
, priv
);
454 en_err(priv
, "Failed configuring VLAN filter\n");
456 mutex_unlock(&mdev
->state_lock
);
461 static void mlx4_en_u64_to_mac(unsigned char dst_mac
[ETH_ALEN
+ 2], u64 src_mac
)
464 for (i
= ETH_ALEN
- 1; i
>= 0; --i
) {
465 dst_mac
[i
] = src_mac
& 0xff;
468 memset(&dst_mac
[ETH_ALEN
], 0, 2);
472 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv
*priv
, unsigned char *addr
,
473 int qpn
, u64
*reg_id
)
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
} };
480 struct mlx4_net_trans_rule rule
= {
481 .queue_mode
= MLX4_NET_TRANS_Q_FIFO
,
484 .promisc_mode
= MLX4_FS_REGULAR
,
485 .priority
= MLX4_DOMAIN_NIC
,
488 __be64 mac_mask
= cpu_to_be64(MLX4_MAC_MASK
<< 16);
490 if (priv
->mdev
->dev
->caps
.tunnel_offload_mode
!= MLX4_TUNNEL_OFFLOAD_MODE_VXLAN
)
491 return 0; /* do nothing */
493 rule
.port
= priv
->port
;
495 INIT_LIST_HEAD(&rule
.list
);
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
);
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 */
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
);
508 err
= mlx4_flow_attach(priv
->mdev
->dev
, &rule
, reg_id
);
510 en_err(priv
, "failed to add vxlan steering rule, err %d\n", err
);
513 en_dbg(DRV
, priv
, "added vxlan steering rule, mac %pM reg_id %llx\n", addr
, *reg_id
);
518 static int mlx4_en_uc_steer_add(struct mlx4_en_priv
*priv
,
519 unsigned char *mac
, int *qpn
, u64
*reg_id
)
521 struct mlx4_en_dev
*mdev
= priv
->mdev
;
522 struct mlx4_dev
*dev
= mdev
->dev
;
525 switch (dev
->caps
.steering_mode
) {
526 case MLX4_STEERING_MODE_B0
: {
531 memcpy(&gid
[10], mac
, ETH_ALEN
);
534 err
= mlx4_unicast_attach(dev
, &qp
, gid
, 0, MLX4_PROT_ETH
);
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);
541 struct mlx4_net_trans_rule rule
= {
542 .queue_mode
= MLX4_NET_TRANS_Q_FIFO
,
545 .promisc_mode
= MLX4_FS_REGULAR
,
546 .priority
= MLX4_DOMAIN_NIC
,
549 rule
.port
= priv
->port
;
551 INIT_LIST_HEAD(&rule
.list
);
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
);
558 err
= mlx4_flow_attach(dev
, &rule
, reg_id
);
565 en_warn(priv
, "Failed Attaching Unicast\n");
570 static void mlx4_en_uc_steer_release(struct mlx4_en_priv
*priv
,
571 unsigned char *mac
, int qpn
, u64 reg_id
)
573 struct mlx4_en_dev
*mdev
= priv
->mdev
;
574 struct mlx4_dev
*dev
= mdev
->dev
;
576 switch (dev
->caps
.steering_mode
) {
577 case MLX4_STEERING_MODE_B0
: {
582 memcpy(&gid
[10], mac
, ETH_ALEN
);
585 mlx4_unicast_detach(dev
, &qp
, gid
, MLX4_PROT_ETH
);
588 case MLX4_STEERING_MODE_DEVICE_MANAGED
: {
589 mlx4_flow_detach(dev
, reg_id
);
593 en_err(priv
, "Invalid steering mode.\n");
597 static int mlx4_en_get_qp(struct mlx4_en_priv
*priv
)
599 struct mlx4_en_dev
*mdev
= priv
->mdev
;
600 struct mlx4_dev
*dev
= mdev
->dev
;
601 struct mlx4_mac_entry
*entry
;
605 int *qpn
= &priv
->base_qpn
;
606 u64 mac
= mlx4_en_mac_to_u64(priv
->dev
->dev_addr
);
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
);
613 en_err(priv
, "Failed adding MAC: %pM\n",
614 priv
->dev
->dev_addr
);
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
;
624 err
= mlx4_qp_reserve_range(dev
, 1, 1, qpn
);
625 en_dbg(DRV
, priv
, "Reserved qp %d\n", *qpn
);
627 en_err(priv
, "Failed to reserve qp for mac registration\n");
631 err
= mlx4_en_uc_steer_add(priv
, priv
->dev
->dev_addr
, qpn
, ®_id
);
635 err
= mlx4_en_tunnel_steer_add(priv
, priv
->dev
->dev_addr
, *qpn
,
636 &priv
->tunnel_reg_id
);
640 entry
= kmalloc(sizeof(*entry
), GFP_KERNEL
);
645 memcpy(entry
->mac
, priv
->dev
->dev_addr
, sizeof(entry
->mac
));
646 entry
->reg_id
= reg_id
;
648 hlist_add_head_rcu(&entry
->hlist
,
649 &priv
->mac_hash
[entry
->mac
[MLX4_EN_MAC_HASH_IDX
]]);
654 if (priv
->tunnel_reg_id
)
655 mlx4_flow_detach(priv
->mdev
->dev
, priv
->tunnel_reg_id
);
657 mlx4_en_uc_steer_release(priv
, priv
->dev
->dev_addr
, *qpn
, reg_id
);
660 mlx4_qp_release_range(dev
, *qpn
, 1);
663 mlx4_unregister_mac(dev
, priv
->port
, mac
);
667 static void mlx4_en_put_qp(struct mlx4_en_priv
*priv
)
669 struct mlx4_en_dev
*mdev
= priv
->mdev
;
670 struct mlx4_dev
*dev
= mdev
->dev
;
671 int qpn
= priv
->base_qpn
;
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
);
680 struct mlx4_mac_entry
*entry
;
681 struct hlist_node
*tmp
;
682 struct hlist_head
*bucket
;
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",
691 mlx4_en_uc_steer_release(priv
, entry
->mac
,
694 mlx4_unregister_mac(dev
, priv
->port
, mac
);
695 hlist_del_rcu(&entry
->hlist
);
696 kfree_rcu(entry
, rcu
);
700 if (priv
->tunnel_reg_id
) {
701 mlx4_flow_detach(priv
->mdev
->dev
, priv
->tunnel_reg_id
);
702 priv
->tunnel_reg_id
= 0;
705 en_dbg(DRV
, priv
, "Releasing qp: port %d, qpn %d\n",
707 mlx4_qp_release_range(dev
, qpn
, 1);
708 priv
->flags
&= ~MLX4_EN_FLAG_FORCE_PROMISC
;
712 static int mlx4_en_replace_mac(struct mlx4_en_priv
*priv
, int qpn
,
713 unsigned char *new_mac
, unsigned char *prev_mac
)
715 struct mlx4_en_dev
*mdev
= priv
->mdev
;
716 struct mlx4_dev
*dev
= mdev
->dev
;
718 u64 new_mac_u64
= mlx4_en_mac_to_u64(new_mac
);
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
);
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
,
732 mlx4_unregister_mac(dev
, priv
->port
,
734 hlist_del_rcu(&entry
->hlist
);
736 memcpy(entry
->mac
, new_mac
, ETH_ALEN
);
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
,
751 return __mlx4_replace_mac(dev
, priv
->port
, qpn
, new_mac_u64
);
754 u64
mlx4_en_mac_to_u64(u8
*addr
)
759 for (i
= 0; i
< ETH_ALEN
; i
++) {
766 static int mlx4_en_do_set_mac(struct mlx4_en_priv
*priv
)
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
);
775 en_err(priv
, "Failed changing HW MAC address\n");
776 memcpy(priv
->prev_mac
, priv
->dev
->dev_addr
,
777 sizeof(priv
->prev_mac
));
779 en_dbg(HW
, priv
, "Port is down while registering mac, exiting...\n");
784 static int mlx4_en_set_mac(struct net_device
*dev
, void *addr
)
786 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
787 struct mlx4_en_dev
*mdev
= priv
->mdev
;
788 struct sockaddr
*saddr
= addr
;
791 if (!is_valid_ether_addr(saddr
->sa_data
))
792 return -EADDRNOTAVAIL
;
794 memcpy(dev
->dev_addr
, saddr
->sa_data
, ETH_ALEN
);
796 mutex_lock(&mdev
->state_lock
);
797 err
= mlx4_en_do_set_mac(priv
);
798 mutex_unlock(&mdev
->state_lock
);
803 static void mlx4_en_clear_list(struct net_device
*dev
)
805 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
806 struct mlx4_en_mc_list
*tmp
, *mc_to_del
;
808 list_for_each_entry_safe(mc_to_del
, tmp
, &priv
->mc_list
, list
) {
809 list_del(&mc_to_del
->list
);
814 static void mlx4_en_cache_mclist(struct net_device
*dev
)
816 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
817 struct netdev_hw_addr
*ha
;
818 struct mlx4_en_mc_list
*tmp
;
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
);
824 mlx4_en_clear_list(dev
);
827 memcpy(tmp
->addr
, ha
->addr
, ETH_ALEN
);
828 list_add_tail(&tmp
->list
, &priv
->mc_list
);
832 static void update_mclist_flags(struct mlx4_en_priv
*priv
,
833 struct list_head
*dst
,
834 struct list_head
*src
)
836 struct mlx4_en_mc_list
*dst_tmp
, *src_tmp
, *new_mc
;
839 /* Find all the entries that should be removed from dst,
840 * These are the entries that are not found in src
842 list_for_each_entry(dst_tmp
, dst
, list
) {
844 list_for_each_entry(src_tmp
, src
, list
) {
845 if (ether_addr_equal(dst_tmp
->addr
, src_tmp
->addr
)) {
851 dst_tmp
->action
= MCLIST_REM
;
854 /* Add entries that exist in src but not in dst
855 * mark them as need to add
857 list_for_each_entry(src_tmp
, src
, list
) {
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
;
867 new_mc
= kmemdup(src_tmp
,
868 sizeof(struct mlx4_en_mc_list
),
873 new_mc
->action
= MCLIST_ADD
;
874 list_add_tail(&new_mc
->list
, dst
);
879 static void mlx4_en_set_rx_mode(struct net_device
*dev
)
881 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
886 queue_work(priv
->mdev
->workqueue
, &priv
->rx_mode_task
);
889 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv
*priv
,
890 struct mlx4_en_dev
*mdev
)
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
;
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
,
905 MLX4_FS_ALL_DEFAULT
);
907 en_err(priv
, "Failed enabling promiscuous mode\n");
908 priv
->flags
|= MLX4_EN_FLAG_MC_PROMISC
;
911 case MLX4_STEERING_MODE_B0
:
912 err
= mlx4_unicast_promisc_add(mdev
->dev
,
916 en_err(priv
, "Failed enabling unicast promiscuous mode\n");
918 /* Add the default qp number as multicast
921 if (!(priv
->flags
& MLX4_EN_FLAG_MC_PROMISC
)) {
922 err
= mlx4_multicast_promisc_add(mdev
->dev
,
926 en_err(priv
, "Failed enabling multicast promiscuous mode\n");
927 priv
->flags
|= MLX4_EN_FLAG_MC_PROMISC
;
931 case MLX4_STEERING_MODE_A0
:
932 err
= mlx4_SET_PORT_qpn_calc(mdev
->dev
,
937 en_err(priv
, "Failed enabling promiscuous mode\n");
941 /* Disable port multicast filter (unconditionally) */
942 err
= mlx4_SET_MCAST_FLTR(mdev
->dev
, priv
->port
, 0,
943 0, MLX4_MCAST_DISABLE
);
945 en_err(priv
, "Failed disabling multicast filter\n");
947 /* Disable port VLAN filter */
948 err
= mlx4_SET_VLAN_FLTR(mdev
->dev
, priv
);
950 en_err(priv
, "Failed disabling VLAN filter\n");
954 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv
*priv
,
955 struct mlx4_en_dev
*mdev
)
959 if (netif_msg_rx_status(priv
))
960 en_warn(priv
, "Leaving promiscuous mode\n");
961 priv
->flags
&= ~MLX4_EN_FLAG_PROMISC
;
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
,
968 MLX4_FS_ALL_DEFAULT
);
970 en_err(priv
, "Failed disabling promiscuous mode\n");
971 priv
->flags
&= ~MLX4_EN_FLAG_MC_PROMISC
;
974 case MLX4_STEERING_MODE_B0
:
975 err
= mlx4_unicast_promisc_remove(mdev
->dev
,
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
,
986 en_err(priv
, "Failed disabling multicast promiscuous mode\n");
987 priv
->flags
&= ~MLX4_EN_FLAG_MC_PROMISC
;
991 case MLX4_STEERING_MODE_A0
:
992 err
= mlx4_SET_PORT_qpn_calc(mdev
->dev
,
996 en_err(priv
, "Failed disabling promiscuous mode\n");
1000 /* Enable port VLAN filter */
1001 err
= mlx4_SET_VLAN_FLTR(mdev
->dev
, priv
);
1003 en_err(priv
, "Failed enabling VLAN filter\n");
1006 static void mlx4_en_do_multicast(struct mlx4_en_priv
*priv
,
1007 struct net_device
*dev
,
1008 struct mlx4_en_dev
*mdev
)
1010 struct mlx4_en_mc_list
*mclist
, *tmp
;
1012 u8 mc_list
[16] = {0};
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
);
1020 en_err(priv
, "Failed disabling multicast filter\n");
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
,
1029 MLX4_FS_MC_DEFAULT
);
1032 case MLX4_STEERING_MODE_B0
:
1033 err
= mlx4_multicast_promisc_add(mdev
->dev
,
1038 case MLX4_STEERING_MODE_A0
:
1042 en_err(priv
, "Failed entering multicast promisc mode\n");
1043 priv
->flags
|= MLX4_EN_FLAG_MC_PROMISC
;
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
,
1052 MLX4_FS_MC_DEFAULT
);
1055 case MLX4_STEERING_MODE_B0
:
1056 err
= mlx4_multicast_promisc_remove(mdev
->dev
,
1061 case MLX4_STEERING_MODE_A0
:
1065 en_err(priv
, "Failed disabling multicast promiscuous mode\n");
1066 priv
->flags
&= ~MLX4_EN_FLAG_MC_PROMISC
;
1069 err
= mlx4_SET_MCAST_FLTR(mdev
->dev
, priv
->port
, 0,
1070 0, MLX4_MCAST_DISABLE
);
1072 en_err(priv
, "Failed disabling multicast filter\n");
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
);
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
);
1088 err
= mlx4_SET_MCAST_FLTR(mdev
->dev
, priv
->port
, 0,
1089 0, MLX4_MCAST_ENABLE
);
1091 en_err(priv
, "Failed enabling multicast filter\n");
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
,
1105 en_err(priv
, "Fail to detach multicast address\n");
1107 if (mclist
->tunnel_reg_id
) {
1108 err
= mlx4_flow_detach(priv
->mdev
->dev
, mclist
->tunnel_reg_id
);
1110 en_err(priv
, "Failed to detach multicast address\n");
1113 /* remove from list */
1114 list_del(&mclist
->list
);
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
,
1128 en_err(priv
, "Fail to attach multicast address\n");
1130 err
= mlx4_en_tunnel_steer_add(priv
, &mc_list
[10], priv
->base_qpn
,
1131 &mclist
->tunnel_reg_id
);
1133 en_err(priv
, "Failed to attach multicast address\n");
1139 static void mlx4_en_do_uc_filter(struct mlx4_en_priv
*priv
,
1140 struct net_device
*dev
,
1141 struct mlx4_en_dev
*mdev
)
1143 struct netdev_hw_addr
*ha
;
1144 struct mlx4_mac_entry
*entry
;
1145 struct hlist_node
*tmp
;
1149 struct hlist_head
*bucket
;
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
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
) {
1163 netdev_for_each_uc_addr(ha
, dev
) {
1164 if (ether_addr_equal_64bits(entry
->mac
,
1171 /* MAC address of the port is not in uc list */
1172 if (ether_addr_equal_64bits(entry
->mac
, dev
->dev_addr
))
1176 mac
= mlx4_en_mac_to_u64(entry
->mac
);
1177 mlx4_en_uc_steer_release(priv
, entry
->mac
,
1180 mlx4_unregister_mac(mdev
->dev
, priv
->port
, mac
);
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
);
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
1194 if ((priv
->flags
& MLX4_EN_FLAG_FORCE_PROMISC
) && 0 == removed
)
1197 prev_flags
= priv
->flags
;
1198 priv
->flags
&= ~MLX4_EN_FLAG_FORCE_PROMISC
;
1200 /* find what to add */
1201 netdev_for_each_uc_addr(ha
, dev
) {
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
)) {
1212 entry
= kmalloc(sizeof(*entry
), GFP_KERNEL
);
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
;
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
);
1223 en_err(priv
, "Failed registering MAC %pM on port %d: %d\n",
1224 ha
->addr
, priv
->port
, err
);
1226 priv
->flags
|= MLX4_EN_FLAG_FORCE_PROMISC
;
1229 err
= mlx4_en_uc_steer_add(priv
, ha
->addr
,
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
);
1237 priv
->flags
|= MLX4_EN_FLAG_FORCE_PROMISC
;
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
);
1250 if (priv
->flags
& MLX4_EN_FLAG_FORCE_PROMISC
) {
1251 en_warn(priv
, "Forcing promiscuous mode on port:%d\n",
1253 } else if (prev_flags
& MLX4_EN_FLAG_FORCE_PROMISC
) {
1254 en_warn(priv
, "Stop forcing promiscuous mode on port:%d\n",
1259 static void mlx4_en_do_set_rx_mode(struct work_struct
*work
)
1261 struct mlx4_en_priv
*priv
= container_of(work
, struct mlx4_en_priv
,
1263 struct mlx4_en_dev
*mdev
= priv
->mdev
;
1264 struct net_device
*dev
= priv
->dev
;
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");
1271 if (!priv
->port_up
) {
1272 en_dbg(HW
, priv
, "Port is down, ignoring rx mode change.\n");
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");
1286 if (dev
->priv_flags
& IFF_UNICAST_FLT
)
1287 mlx4_en_do_uc_filter(priv
, dev
, mdev
);
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
);
1296 /* Not in promiscuous mode */
1297 if (priv
->flags
& MLX4_EN_FLAG_PROMISC
)
1298 mlx4_en_clear_promisc_mode(priv
, mdev
);
1300 mlx4_en_do_multicast(priv
, dev
, mdev
);
1302 mutex_unlock(&mdev
->state_lock
);
1305 #ifdef CONFIG_NET_POLL_CONTROLLER
1306 static void mlx4_en_netpoll(struct net_device
*dev
)
1308 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
1309 struct mlx4_en_cq
*cq
;
1310 unsigned long flags
;
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
);
1323 static void mlx4_en_tx_timeout(struct net_device
*dev
)
1325 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
1326 struct mlx4_en_dev
*mdev
= priv
->mdev
;
1329 if (netif_msg_timer(priv
))
1330 en_warn(priv
, "Tx timeout called on port:%d\n", priv
->port
);
1332 for (i
= 0; i
< priv
->tx_ring_num
; i
++) {
1333 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev
, i
)))
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
);
1340 priv
->port_stats
.tx_timeout
++;
1341 en_dbg(DRV
, priv
, "Scheduling watchdog\n");
1342 queue_work(mdev
->workqueue
, &priv
->watchdog_task
);
1346 static struct net_device_stats
*mlx4_en_get_stats(struct net_device
*dev
)
1348 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
1350 spin_lock_bh(&priv
->stats_lock
);
1351 memcpy(&priv
->ret_stats
, &priv
->stats
, sizeof(priv
->stats
));
1352 spin_unlock_bh(&priv
->stats_lock
);
1354 return &priv
->ret_stats
;
1357 static void mlx4_en_set_default_moderation(struct mlx4_en_priv
*priv
)
1359 struct mlx4_en_cq
*cq
;
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.
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
);
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;
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
;
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;
1402 static void mlx4_en_auto_moderation(struct mlx4_en_priv
*priv
)
1404 unsigned long period
= (unsigned long) (jiffies
- priv
->last_moder_jiffies
);
1405 struct mlx4_en_cq
*cq
;
1406 unsigned long packets
;
1408 unsigned long avg_pkt_size
;
1409 unsigned long rx_packets
;
1410 unsigned long rx_bytes
;
1411 unsigned long rx_pkt_diff
;
1415 if (!priv
->adaptive_rx_coal
|| period
< priv
->sample_interval
* HZ
)
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
);
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;
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
;
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
) +
1445 moder_time
= priv
->rx_usecs_low
;
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
);
1455 en_err(priv
, "Failed modifying moderation for cq:%d\n",
1458 priv
->last_moder_packets
[ring
] = rx_packets
;
1459 priv
->last_moder_bytes
[ring
] = rx_bytes
;
1462 priv
->last_moder_jiffies
= jiffies
;
1465 static void mlx4_en_do_get_stats(struct work_struct
*work
)
1467 struct delayed_work
*delay
= to_delayed_work(work
);
1468 struct mlx4_en_priv
*priv
= container_of(delay
, struct mlx4_en_priv
,
1470 struct mlx4_en_dev
*mdev
= priv
->mdev
;
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);
1478 en_dbg(HW
, priv
, "Could not update stats\n");
1480 mlx4_en_auto_moderation(priv
);
1483 queue_delayed_work(mdev
->workqueue
, &priv
->stats_task
, STATS_DELAY
);
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;
1489 mutex_unlock(&mdev
->state_lock
);
1492 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1495 static void mlx4_en_service_task(struct work_struct
*work
)
1497 struct delayed_work
*delay
= to_delayed_work(work
);
1498 struct mlx4_en_priv
*priv
= container_of(delay
, struct mlx4_en_priv
,
1500 struct mlx4_en_dev
*mdev
= priv
->mdev
;
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
);
1507 queue_delayed_work(mdev
->workqueue
, &priv
->service_task
,
1508 SERVICE_TASK_DELAY
);
1510 mutex_unlock(&mdev
->state_lock
);
1513 static void mlx4_en_linkstate(struct work_struct
*work
)
1515 struct mlx4_en_priv
*priv
= container_of(work
, struct mlx4_en_priv
,
1517 struct mlx4_en_dev
*mdev
= priv
->mdev
;
1518 int linkstate
= priv
->link_state
;
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
);
1528 en_info(priv
, "Link Up\n");
1529 netif_carrier_on(priv
->dev
);
1532 priv
->last_link_state
= linkstate
;
1533 mutex_unlock(&mdev
->state_lock
);
1537 int mlx4_en_start_port(struct net_device
*dev
)
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
;
1548 u8 mc_list
[16] = {0};
1550 if (priv
->port_up
) {
1551 en_dbg(DRV
, priv
, "start port called while port already up\n");
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
);
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
);
1566 /* Configure rx cq's and rings */
1567 err
= mlx4_en_activate_rx_rings(priv
);
1569 en_err(priv
, "Failed to activate RX rings\n");
1572 for (i
= 0; i
< priv
->rx_ring_num
; i
++) {
1573 cq
= priv
->rx_cq
[i
];
1575 mlx4_en_cq_init_lock(cq
);
1577 err
= mlx4_en_activate_cq(priv
, cq
, i
);
1579 en_err(priv
, "Failed activating Rx CQ\n");
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
);
1586 en_err(priv
, "Failed setting cq moderation parameters");
1587 mlx4_en_deactivate_cq(priv
, cq
);
1590 mlx4_en_arm_cq(priv
, cq
);
1591 priv
->rx_ring
[i
]->cqn
= cq
->mcq
.cqn
;
1596 en_dbg(DRV
, priv
, "Getting qp number for port %d\n", priv
->port
);
1597 err
= mlx4_en_get_qp(priv
);
1599 en_err(priv
, "Failed getting eth qp\n");
1602 mdev
->mac_removed
[priv
->port
] = 0;
1604 err
= mlx4_en_config_rss_steer(priv
);
1606 en_err(priv
, "Failed configuring rss steering\n");
1610 err
= mlx4_en_create_drop_qp(priv
);
1614 /* Configure tx cq's and rings */
1615 for (i
= 0; i
< priv
->tx_ring_num
; i
++) {
1617 cq
= priv
->tx_cq
[i
];
1618 err
= mlx4_en_activate_cq(priv
, cq
, i
);
1620 en_err(priv
, "Failed allocating Tx CQ\n");
1623 err
= mlx4_en_set_cq_moder(priv
, cq
);
1625 en_err(priv
, "Failed setting cq moderation parameters");
1626 mlx4_en_deactivate_cq(priv
, cq
);
1629 en_dbg(DRV
, priv
, "Resetting index of collapsed CQ:%d to -1\n", i
);
1630 cq
->buf
->wqe_index
= cpu_to_be16(0xffff);
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
);
1637 en_err(priv
, "Failed allocating Tx ring\n");
1638 mlx4_en_deactivate_cq(priv
, cq
);
1641 tx_ring
->tx_queue
= netdev_get_tx_queue(dev
, i
);
1643 /* Arm CQ for TX completions */
1644 mlx4_en_arm_cq(priv
, cq
);
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;
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
,
1657 priv
->prof
->rx_pause
,
1658 priv
->prof
->rx_ppp
);
1660 en_err(priv
, "Failed setting port general configurations for port %d, with error %d\n",
1664 /* Set default qp number */
1665 err
= mlx4_SET_PORT_qpn_calc(mdev
->dev
, priv
->port
, priv
->base_qpn
, 0);
1667 en_err(priv
, "Failed setting default qp numbers\n");
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
);
1674 en_err(priv
, "Failed setting port L2 tunnel configuration, err %d\n",
1681 en_dbg(HW
, priv
, "Initializing port\n");
1682 err
= mlx4_INIT_PORT(mdev
->dev
, priv
->port
);
1684 en_err(priv
, "Failed Initializing port\n");
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");
1696 /* Must redo promiscuous mode setup. */
1697 priv
->flags
&= ~(MLX4_EN_FLAG_PROMISC
| MLX4_EN_FLAG_MC_PROMISC
);
1699 /* Schedule multicast task to populate multicast list */
1700 queue_work(mdev
->workqueue
, &priv
->rx_mode_task
);
1702 mlx4_set_stats_bitmap(mdev
->dev
, &priv
->stats_bitmap
);
1704 priv
->port_up
= true;
1705 netif_tx_start_all_queues(dev
);
1706 netif_device_attach(dev
);
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
]);
1715 mlx4_en_destroy_drop_qp(priv
);
1717 mlx4_en_release_rss_steer(priv
);
1719 mlx4_en_put_qp(priv
);
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
]);
1726 return err
; /* need to close devices */
1730 void mlx4_en_stop_port(struct net_device
*dev
, int detach
)
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
;
1737 u8 mc_list
[16] = {0};
1739 if (!priv
->port_up
) {
1740 en_dbg(DRV
, priv
, "stop port called while port already down\n");
1745 mlx4_CLOSE_PORT(mdev
->dev
, priv
->port
);
1747 /* Synchronize with tx routine */
1748 netif_tx_lock_bh(dev
);
1750 netif_device_detach(dev
);
1751 netif_tx_stop_all_queues(dev
);
1752 netif_tx_unlock_bh(dev
);
1754 netif_tx_disable(dev
);
1756 /* Set port as not active */
1757 priv
->port_up
= false;
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
,
1766 MLX4_FS_ALL_DEFAULT
);
1767 mlx4_flow_steer_promisc_remove(mdev
->dev
,
1769 MLX4_FS_MC_DEFAULT
);
1770 } else if (priv
->flags
& MLX4_EN_FLAG_PROMISC
) {
1771 priv
->flags
&= ~MLX4_EN_FLAG_PROMISC
;
1773 /* Disable promiscouos mode */
1774 mlx4_unicast_promisc_remove(mdev
->dev
, priv
->base_qpn
,
1777 /* Disable Multicast promisc */
1778 if (priv
->flags
& MLX4_EN_FLAG_MC_PROMISC
) {
1779 mlx4_multicast_promisc_remove(mdev
->dev
, priv
->base_qpn
,
1781 priv
->flags
&= ~MLX4_EN_FLAG_MC_PROMISC
;
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
);
1796 mlx4_en_clear_list(dev
);
1797 list_for_each_entry_safe(mclist
, tmp
, &priv
->curr_list
, list
) {
1798 list_del(&mclist
->list
);
1802 /* Flush multicast filter */
1803 mlx4_SET_MCAST_FLTR(mdev
->dev
, priv
->port
, 0, 1, MLX4_MCAST_CONFIG
);
1805 /* Remove flow steering rules for the port*/
1806 if (mdev
->dev
->caps
.steering_mode
==
1807 MLX4_STEERING_MODE_DEVICE_MANAGED
) {
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
);
1816 mlx4_en_destroy_drop_qp(priv
);
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
]);
1825 for (i
= 0; i
< priv
->tx_ring_num
; i
++)
1826 mlx4_en_free_tx_buf(dev
, priv
->tx_ring
[i
]);
1829 mlx4_en_release_rss_steer(priv
);
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;
1837 for (i
= 0; i
< priv
->rx_ring_num
; i
++) {
1838 struct mlx4_en_cq
*cq
= priv
->rx_cq
[i
];
1841 while (!mlx4_en_cq_lock_napi(cq
)) {
1842 pr_info("CQ %d locked\n", i
);
1847 while (test_bit(NAPI_STATE_SCHED
, &cq
->napi
.state
))
1849 mlx4_en_deactivate_rx_ring(priv
, priv
->rx_ring
[i
]);
1850 mlx4_en_deactivate_cq(priv
, cq
);
1854 static void mlx4_en_restart(struct work_struct
*work
)
1856 struct mlx4_en_priv
*priv
= container_of(work
, struct mlx4_en_priv
,
1858 struct mlx4_en_dev
*mdev
= priv
->mdev
;
1859 struct net_device
*dev
= priv
->dev
;
1861 en_dbg(DRV
, priv
, "Watchdog task called for port %d\n", priv
->port
);
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
);
1869 mutex_unlock(&mdev
->state_lock
);
1872 static void mlx4_en_clear_stats(struct net_device
*dev
)
1874 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
1875 struct mlx4_en_dev
*mdev
= priv
->mdev
;
1878 if (mlx4_en_DUMP_ETH_STATS(mdev
, priv
->port
, 1))
1879 en_dbg(HW
, priv
, "Failed dumping statistics\n");
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
));
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;
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;
1899 static int mlx4_en_open(struct net_device
*dev
)
1901 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
1902 struct mlx4_en_dev
*mdev
= priv
->mdev
;
1905 mutex_lock(&mdev
->state_lock
);
1907 if (!mdev
->device_up
) {
1908 en_err(priv
, "Cannot open - device down/disabled\n");
1913 /* Reset HW statistics and SW counters */
1914 mlx4_en_clear_stats(dev
);
1916 err
= mlx4_en_start_port(dev
);
1918 en_err(priv
, "Failed starting port:%d\n", priv
->port
);
1921 mutex_unlock(&mdev
->state_lock
);
1926 static int mlx4_en_close(struct net_device
*dev
)
1928 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
1929 struct mlx4_en_dev
*mdev
= priv
->mdev
;
1931 en_dbg(IFDOWN
, priv
, "Close port called\n");
1933 mutex_lock(&mdev
->state_lock
);
1935 mlx4_en_stop_port(dev
, 0);
1936 netif_carrier_off(dev
);
1938 mutex_unlock(&mdev
->state_lock
);
1942 void mlx4_en_free_resources(struct mlx4_en_priv
*priv
)
1946 #ifdef CONFIG_RFS_ACCEL
1947 free_irq_cpu_rmap(priv
->dev
->rx_cpu_rmap
);
1948 priv
->dev
->rx_cpu_rmap
= NULL
;
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
]);
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
);
1963 mlx4_en_destroy_cq(priv
, &priv
->rx_cq
[i
]);
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;
1972 int mlx4_en_alloc_resources(struct mlx4_en_priv
*priv
)
1974 struct mlx4_en_port_profile
*prof
= priv
->prof
;
1979 err
= mlx4_qp_reserve_range(priv
->mdev
->dev
, priv
->tx_ring_num
, 256, &priv
->base_tx_qpn
);
1981 en_err(priv
, "failed reserving range for TX rings\n");
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
))
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
,
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
))
2006 if (mlx4_en_create_rx_ring(priv
, &priv
->rx_ring
[i
],
2007 prof
->rx_ring_size
, priv
->stride
,
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
)
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
],
2030 mlx4_en_destroy_cq(priv
, &priv
->rx_cq
[i
]);
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
]);
2036 mlx4_en_destroy_cq(priv
, &priv
->tx_cq
[i
]);
2042 void mlx4_en_destroy_netdev(struct net_device
*dev
)
2044 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
2045 struct mlx4_en_dev
*mdev
= priv
->mdev
;
2047 en_dbg(DRV
, priv
, "Destroying netdev on port:%d\n", priv
->port
);
2049 /* Unregister device - this will close the port if it was up */
2050 if (priv
->registered
)
2051 unregister_netdev(dev
);
2053 if (priv
->allocated
)
2054 mlx4_free_hwq_res(mdev
->dev
, &priv
->res
, MLX4_EN_PAGE_SIZE
);
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
);
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
);
2066 mlx4_en_free_resources(priv
);
2068 kfree(priv
->tx_ring
);
2074 static int mlx4_en_change_mtu(struct net_device
*dev
, int new_mtu
)
2076 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
2077 struct mlx4_en_dev
*mdev
= priv
->mdev
;
2080 en_dbg(DRV
, priv
, "Change MTU called - current:%d new:%d\n",
2083 if ((new_mtu
< MLX4_EN_MIN_MTU
) || (new_mtu
> priv
->max_mtu
)) {
2084 en_err(priv
, "Bad MTU size:%d.\n", new_mtu
);
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
2094 en_dbg(DRV
, priv
, "Change MTU called with card down!?\n");
2096 mlx4_en_stop_port(dev
, 1);
2097 err
= mlx4_en_start_port(dev
);
2099 en_err(priv
, "Failed restarting port:%d\n",
2101 queue_work(mdev
->workqueue
, &priv
->watchdog_task
);
2104 mutex_unlock(&mdev
->state_lock
);
2109 static int mlx4_en_hwtstamp_set(struct net_device
*dev
, struct ifreq
*ifr
)
2111 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
2112 struct mlx4_en_dev
*mdev
= priv
->mdev
;
2113 struct hwtstamp_config config
;
2115 if (copy_from_user(&config
, ifr
->ifr_data
, sizeof(config
)))
2118 /* reserved for future extensions */
2122 /* device doesn't support time stamping */
2123 if (!(mdev
->dev
->caps
.flags2
& MLX4_DEV_CAP_FLAG2_TS
))
2126 /* TX HW timestamp */
2127 switch (config
.tx_type
) {
2128 case HWTSTAMP_TX_OFF
:
2129 case HWTSTAMP_TX_ON
:
2135 /* RX HW timestamp */
2136 switch (config
.rx_filter
) {
2137 case HWTSTAMP_FILTER_NONE
:
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
;
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
;
2164 return copy_to_user(ifr
->ifr_data
, &config
,
2165 sizeof(config
)) ? -EFAULT
: 0;
2168 static int mlx4_en_hwtstamp_get(struct net_device
*dev
, struct ifreq
*ifr
)
2170 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
2172 return copy_to_user(ifr
->ifr_data
, &priv
->hwtstamp_config
,
2173 sizeof(priv
->hwtstamp_config
)) ? -EFAULT
: 0;
2176 static int mlx4_en_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
2180 return mlx4_en_hwtstamp_set(dev
, ifr
);
2182 return mlx4_en_hwtstamp_get(dev
, ifr
);
2188 static int mlx4_en_set_features(struct net_device
*netdev
,
2189 netdev_features_t features
)
2191 struct mlx4_en_priv
*priv
= netdev_priv(netdev
);
2193 if (features
& NETIF_F_LOOPBACK
)
2194 priv
->ctrl_flags
|= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK
);
2197 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK
);
2199 mlx4_en_update_loopback_state(netdev
, features
);
2205 static int mlx4_en_set_vf_mac(struct net_device
*dev
, int queue
, u8
*mac
)
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
);
2211 if (!is_valid_ether_addr(mac
))
2214 return mlx4_set_vf_mac(mdev
->dev
, en_priv
->port
, queue
, mac_u64
);
2217 static int mlx4_en_set_vf_vlan(struct net_device
*dev
, int vf
, u16 vlan
, u8 qos
)
2219 struct mlx4_en_priv
*en_priv
= netdev_priv(dev
);
2220 struct mlx4_en_dev
*mdev
= en_priv
->mdev
;
2222 return mlx4_set_vf_vlan(mdev
->dev
, en_priv
->port
, vf
, vlan
, qos
);
2225 static int mlx4_en_set_vf_spoofchk(struct net_device
*dev
, int vf
, bool setting
)
2227 struct mlx4_en_priv
*en_priv
= netdev_priv(dev
);
2228 struct mlx4_en_dev
*mdev
= en_priv
->mdev
;
2230 return mlx4_set_vf_spoofchk(mdev
->dev
, en_priv
->port
, vf
, setting
);
2233 static int mlx4_en_get_vf_config(struct net_device
*dev
, int vf
, struct ifla_vf_info
*ivf
)
2235 struct mlx4_en_priv
*en_priv
= netdev_priv(dev
);
2236 struct mlx4_en_dev
*mdev
= en_priv
->mdev
;
2238 return mlx4_get_vf_config(mdev
->dev
, en_priv
->port
, vf
, ivf
);
2241 static int mlx4_en_set_vf_link_state(struct net_device
*dev
, int vf
, int link_state
)
2243 struct mlx4_en_priv
*en_priv
= netdev_priv(dev
);
2244 struct mlx4_en_dev
*mdev
= en_priv
->mdev
;
2246 return mlx4_set_vf_link_state(mdev
->dev
, en_priv
->port
, vf
, link_state
);
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
)
2253 struct mlx4_en_priv
*priv
= netdev_priv(dev
);
2254 struct mlx4_dev
*mdev
= priv
->mdev
->dev
;
2256 u64 phys_port_id
= mdev
->caps
.phys_port_id
[priv
->port
];
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;
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
,
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
,
2291 #ifdef CONFIG_NET_RX_BUSY_POLL
2292 .ndo_busy_poll
= mlx4_en_low_latency_recv
,
2294 .ndo_get_phys_port_id
= mlx4_en_get_phys_port_id
,
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
,
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
,
2323 .ndo_get_phys_port_id
= mlx4_en_get_phys_port_id
,
2326 int mlx4_en_init_netdev(struct mlx4_en_dev
*mdev
, int port
,
2327 struct mlx4_en_port_profile
*prof
)
2329 struct net_device
*dev
;
2330 struct mlx4_en_priv
*priv
;
2335 dev
= alloc_etherdev_mqs(sizeof(struct mlx4_en_priv
),
2336 MAX_TX_RINGS
, MAX_RX_RINGS
);
2340 netif_set_real_num_tx_queues(dev
, prof
->tx_ring_num
);
2341 netif_set_real_num_rx_queues(dev
, prof
->rx_ring_num
);
2343 SET_NETDEV_DEV(dev
, &mdev
->dev
->pdev
->dev
);
2344 dev
->dev_id
= port
- 1;
2347 * Initialize driver private data
2350 priv
= netdev_priv(dev
);
2351 memset(priv
, 0, sizeof(struct mlx4_en_priv
));
2354 priv
->ddev
= &mdev
->pdev
->dev
;
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
;
2364 priv
->tx_ring
= kzalloc(sizeof(struct mlx4_en_tx_ring
*) * MAX_TX_RINGS
,
2366 if (!priv
->tx_ring
) {
2370 priv
->tx_cq
= kzalloc(sizeof(struct mlx4_en_cq
*) * MAX_TX_RINGS
,
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
;
2391 en_info(priv
, "enabling only PFC DCB ops\n");
2392 dev
->dcbnl_ops
= &mlx4_en_dcbnl_pfc_ops
;
2397 for (i
= 0; i
< MLX4_EN_MAC_HASH_SIZE
; ++i
)
2398 INIT_HLIST_HEAD(&priv
->mac_hash
[i
]);
2400 /* Query for default mac and max mtu */
2401 priv
->max_mtu
= mdev
->dev
->caps
.eth_mtu_cap
[priv
->port
];
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
;
2413 en_err(priv
, "Port: %d, invalid mac burned: %pM, quiting\n",
2414 priv
->port
, dev
->dev_addr
);
2420 memcpy(priv
->prev_mac
, dev
->dev_addr
, sizeof(priv
->prev_mac
));
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
);
2428 #ifdef CONFIG_RFS_ACCEL
2429 INIT_LIST_HEAD(&priv
->filters
);
2430 spin_lock_init(&priv
->filters_lock
);
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
;
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
);
2442 en_err(priv
, "Failed to allocate page for rx qps\n");
2445 priv
->allocated
= 1;
2448 * Initialize netdev entry points
2450 if (mlx4_is_master(priv
->mdev
->dev
))
2451 dev
->netdev_ops
= &mlx4_netdev_ops_master
;
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
);
2458 SET_ETHTOOL_OPS(dev
, &mlx4_en_ethtool_ops
);
2461 * Set driver features
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
;
2467 dev
->vlan_features
= dev
->hw_features
;
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
;
2475 if (mdev
->dev
->caps
.steering_mode
==
2476 MLX4_STEERING_MODE_DEVICE_MANAGED
)
2477 dev
->hw_features
|= NETIF_F_NTUPLE
;
2479 if (mdev
->dev
->caps
.steering_mode
!= MLX4_STEERING_MODE_A0
)
2480 dev
->priv_flags
|= IFF_UNICAST_FLT
;
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
;
2489 mdev
->pndev
[port
] = dev
;
2491 netif_carrier_off(dev
);
2492 mlx4_en_set_default_moderation(priv
);
2494 err
= register_netdev(dev
);
2496 en_err(priv
, "Netdev registration failed for port %d\n", port
);
2499 priv
->registered
= 1;
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
);
2504 mlx4_en_update_loopback_state(priv
->dev
, priv
->dev
->features
);
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
);
2513 en_err(priv
, "Failed setting port general configurations "
2514 "for port %d, with error %d\n", priv
->port
, err
);
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
);
2521 en_err(priv
, "Failed setting port L2 tunnel configuration, err %d\n",
2528 en_warn(priv
, "Initializing port\n");
2529 err
= mlx4_INIT_PORT(mdev
->dev
, priv
->port
);
2531 en_err(priv
, "Failed Initializing port\n");
2534 queue_delayed_work(mdev
->workqueue
, &priv
->stats_task
, STATS_DELAY
);
2536 if (mdev
->dev
->caps
.flags2
& MLX4_DEV_CAP_FLAG2_TS
)
2537 queue_delayed_work(mdev
->workqueue
, &priv
->service_task
,
2538 SERVICE_TASK_DELAY
);
2543 mlx4_en_destroy_netdev(dev
);