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/bpf.h>
35	#include <linux/etherdevice.h>
36	#include <linux/filter.h>
37	#include <linux/tcp.h>
38	#include <linux/if_vlan.h>
39	#include <linux/delay.h>
40	#include <linux/slab.h>
41	#include <linux/hash.h>
42	#include <net/ip.h>
43	#include <net/vxlan.h>
44	#include <net/devlink.h>
45	#include <net/rps.h>
46
47	#include <linux/mlx4/driver.h>
48	#include <linux/mlx4/device.h>
49	#include <linux/mlx4/cmd.h>
50	#include <linux/mlx4/cq.h>
51
52	#include "mlx4_en.h"
53	#include "en_port.h"
54
55	#define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
56	XDP_PACKET_HEADROOM - \
57	SKB_DATA_ALIGN(sizeof(struct skb_shared_info))))
58
59	int mlx4_en_setup_tc(struct net_device *dev, u8 up)
60	{
61	struct mlx4_en_priv *priv = netdev_priv(dev);
62	int i;
63	unsigned int offset = 0;
64
65	if (up && up != MLX4_EN_NUM_UP_HIGH)
66	return -EINVAL;
67
68	netdev_set_num_tc(dev, num_tc: up);
69	netif_set_real_num_tx_queues(dev, txq: priv->tx_ring_num[TX]);
70	/* Partition Tx queues evenly amongst UP's */
71	for (i = 0; i < up; i++) {
72	netdev_set_tc_queue(dev, tc: i, count: priv->num_tx_rings_p_up, offset);
73	offset += priv->num_tx_rings_p_up;
74	}
75
76	#ifdef CONFIG_MLX4_EN_DCB
77	if (!mlx4_is_slave(dev: priv->mdev->dev)) {
78	if (up) {
79	if (priv->dcbx_cap)
80	priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
81	} else {
82	priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
83	priv->cee_config.pfc_state = false;
84	}
85	}
86	#endif /* CONFIG_MLX4_EN_DCB */
87
88	return 0;
89	}
90
91	int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc)
92	{
93	struct mlx4_en_priv *priv = netdev_priv(dev);
94	struct mlx4_en_dev *mdev = priv->mdev;
95	struct mlx4_en_port_profile new_prof;
96	struct mlx4_en_priv *tmp;
97	int total_count;
98	int port_up = 0;
99	int err = 0;
100
101	tmp = kzalloc(size: sizeof(*tmp), GFP_KERNEL);
102	if (!tmp)
103	return -ENOMEM;
104
105	mutex_lock(&mdev->state_lock);
106	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
107	new_prof.num_up = (tc == 0) ? MLX4_EN_NUM_UP_LOW :
108	MLX4_EN_NUM_UP_HIGH;
109	new_prof.tx_ring_num[TX] = new_prof.num_tx_rings_p_up *
110	new_prof.num_up;
111	total_count = new_prof.tx_ring_num[TX] + new_prof.tx_ring_num[TX_XDP];
112	if (total_count > MAX_TX_RINGS) {
113	err = -EINVAL;
114	en_err(priv,
115	"Total number of TX and XDP rings (%d) exceeds the maximum supported (%d)\n",
116	total_count, MAX_TX_RINGS);
117	goto out;
118	}
119	err = mlx4_en_try_alloc_resources(priv, tmp, prof: &new_prof, carry_xdp_prog: true);
120	if (err)
121	goto out;
122
123	if (priv->port_up) {
124	port_up = 1;
125	mlx4_en_stop_port(dev, detach: 1);
126	}
127
128	mlx4_en_safe_replace_resources(priv, tmp);
129	if (port_up) {
130	err = mlx4_en_start_port(dev);
131	if (err) {
132	en_err(priv, "Failed starting port for setup TC\n");
133	goto out;
134	}
135	}
136
137	err = mlx4_en_setup_tc(dev, up: tc);
138	out:
139	mutex_unlock(lock: &mdev->state_lock);
140	kfree(objp: tmp);
141	return err;
142	}
143
144	static int __mlx4_en_setup_tc(struct net_device *dev, enum tc_setup_type type,
145	void *type_data)
146	{
147	struct tc_mqprio_qopt *mqprio = type_data;
148
149	if (type != TC_SETUP_QDISC_MQPRIO)
150	return -EOPNOTSUPP;
151
152	if (mqprio->num_tc && mqprio->num_tc != MLX4_EN_NUM_UP_HIGH)
153	return -EINVAL;
154
155	mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
156
157	return mlx4_en_alloc_tx_queue_per_tc(dev, tc: mqprio->num_tc);
158	}
159
160	#ifdef CONFIG_RFS_ACCEL
161
162	struct mlx4_en_filter {
163	struct list_head next;
164	struct work_struct work;
165
166	u8 ip_proto;
167	__be32 src_ip;
168	__be32 dst_ip;
169	__be16 src_port;
170	__be16 dst_port;
171
172	int rxq_index;
173	struct mlx4_en_priv *priv;
174	u32 flow_id; /* RFS infrastructure id */
175	int id; /* mlx4_en driver id */
176	u64 reg_id; /* Flow steering API id */
177	u8 activated; /* Used to prevent expiry before filter
178	* is attached
179	*/
180	struct hlist_node filter_chain;
181	};
182
183	static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
184
185	static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
186	{
187	switch (ip_proto) {
188	case IPPROTO_UDP:
189	return MLX4_NET_TRANS_RULE_ID_UDP;
190	case IPPROTO_TCP:
191	return MLX4_NET_TRANS_RULE_ID_TCP;
192	default:
193	return MLX4_NET_TRANS_RULE_NUM;
194	}
195	};
196
197	/* Must not acquire state_lock, as its corresponding work_sync
198	* is done under it.
199	*/
200	static void mlx4_en_filter_work(struct work_struct *work)
201	{
202	struct mlx4_en_filter *filter = container_of(work,
203	struct mlx4_en_filter,
204	work);
205	struct mlx4_en_priv *priv = filter->priv;
206	struct mlx4_spec_list spec_tcp_udp = {
207	.id = mlx4_ip_proto_to_trans_rule_id(ip_proto: filter->ip_proto),
208	{
209	.tcp_udp = {
210	.dst_port = filter->dst_port,
211	.dst_port_msk = (__force __be16)-1,
212	.src_port = filter->src_port,
213	.src_port_msk = (__force __be16)-1,
214	},
215	},
216	};
217	struct mlx4_spec_list spec_ip = {
218	.id = MLX4_NET_TRANS_RULE_ID_IPV4,
219	{
220	.ipv4 = {
221	.dst_ip = filter->dst_ip,
222	.dst_ip_msk = (__force __be32)-1,
223	.src_ip = filter->src_ip,
224	.src_ip_msk = (__force __be32)-1,
225	},
226	},
227	};
228	struct mlx4_spec_list spec_eth = {
229	.id = MLX4_NET_TRANS_RULE_ID_ETH,
230	};
231	struct mlx4_net_trans_rule rule = {
232	.list = LIST_HEAD_INIT(rule.list),
233	.queue_mode = MLX4_NET_TRANS_Q_LIFO,
234	.exclusive = 1,
235	.allow_loopback = 1,
236	.promisc_mode = MLX4_FS_REGULAR,
237	.port = priv->port,
238	.priority = MLX4_DOMAIN_RFS,
239	};
240	int rc;
241	__be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
242
243	if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
244	en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
245	filter->ip_proto);
246	goto ignore;
247	}
248	list_add_tail(new: &spec_eth.list, head: &rule.list);
249	list_add_tail(new: &spec_ip.list, head: &rule.list);
250	list_add_tail(new: &spec_tcp_udp.list, head: &rule.list);
251
252	rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
253	memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
254	memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
255
256	filter->activated = 0;
257
258	if (filter->reg_id) {
259	rc = mlx4_flow_detach(dev: priv->mdev->dev, reg_id: filter->reg_id);
260	if (rc && rc != -ENOENT)
261	en_err(priv, "Error detaching flow. rc = %d\n", rc);
262	}
263
264	rc = mlx4_flow_attach(dev: priv->mdev->dev, rule: &rule, reg_id: &filter->reg_id);
265	if (rc)
266	en_err(priv, "Error attaching flow. err = %d\n", rc);
267
268	ignore:
269	mlx4_en_filter_rfs_expire(priv);
270
271	filter->activated = 1;
272	}
273
274	static inline struct hlist_head *
275	filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
276	__be16 src_port, __be16 dst_port)
277	{
278	unsigned long l;
279	int bucket_idx;
280
281	l = (__force unsigned long)src_port |
282	((__force unsigned long)dst_port << 2);
283	l ^= (__force unsigned long)(src_ip ^ dst_ip);
284
285	bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
286
287	return &priv->filter_hash[bucket_idx];
288	}
289
290	static struct mlx4_en_filter *
291	mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
292	__be32 dst_ip, u8 ip_proto, __be16 src_port,
293	__be16 dst_port, u32 flow_id)
294	{
295	struct mlx4_en_filter *filter;
296
297	filter = kzalloc(size: sizeof(struct mlx4_en_filter), GFP_ATOMIC);
298	if (!filter)
299	return NULL;
300
301	filter->priv = priv;
302	filter->rxq_index = rxq_index;
303	INIT_WORK(&filter->work, mlx4_en_filter_work);
304
305	filter->src_ip = src_ip;
306	filter->dst_ip = dst_ip;
307	filter->ip_proto = ip_proto;
308	filter->src_port = src_port;
309	filter->dst_port = dst_port;
310
311	filter->flow_id = flow_id;
312
313	filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
314
315	list_add_tail(new: &filter->next, head: &priv->filters);
316	hlist_add_head(n: &filter->filter_chain,
317	h: filter_hash_bucket(priv, src_ip, dst_ip, src_port,
318	dst_port));
319
320	return filter;
321	}
322
323	static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
324	{
325	struct mlx4_en_priv *priv = filter->priv;
326	int rc;
327
328	list_del(entry: &filter->next);
329
330	rc = mlx4_flow_detach(dev: priv->mdev->dev, reg_id: filter->reg_id);
331	if (rc && rc != -ENOENT)
332	en_err(priv, "Error detaching flow. rc = %d\n", rc);
333
334	kfree(objp: filter);
335	}
336
337	static inline struct mlx4_en_filter *
338	mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
339	u8 ip_proto, __be16 src_port, __be16 dst_port)
340	{
341	struct mlx4_en_filter *filter;
342	struct mlx4_en_filter *ret = NULL;
343
344	hlist_for_each_entry(filter,
345	filter_hash_bucket(priv, src_ip, dst_ip,
346	src_port, dst_port),
347	filter_chain) {
348	if (filter->src_ip == src_ip &&
349	filter->dst_ip == dst_ip &&
350	filter->ip_proto == ip_proto &&
351	filter->src_port == src_port &&
352	filter->dst_port == dst_port) {
353	ret = filter;
354	break;
355	}
356	}
357
358	return ret;
359	}
360
361	static int
362	mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
363	u16 rxq_index, u32 flow_id)
364	{
365	struct mlx4_en_priv *priv = netdev_priv(dev: net_dev);
366	struct mlx4_en_filter *filter;
367	const struct iphdr *ip;
368	const __be16 *ports;
369	u8 ip_proto;
370	__be32 src_ip;
371	__be32 dst_ip;
372	__be16 src_port;
373	__be16 dst_port;
374	int nhoff = skb_network_offset(skb);
375	int ret = 0;
376
377	if (skb->encapsulation)
378	return -EPROTONOSUPPORT;
379
380	if (skb->protocol != htons(ETH_P_IP))
381	return -EPROTONOSUPPORT;
382
383	ip = (const struct iphdr *)(skb->data + nhoff);
384	if (ip_is_fragment(iph: ip))
385	return -EPROTONOSUPPORT;
386
387	if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
388	return -EPROTONOSUPPORT;
389	ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
390
391	ip_proto = ip->protocol;
392	src_ip = ip->saddr;
393	dst_ip = ip->daddr;
394	src_port = ports[0];
395	dst_port = ports[1];
396
397	spin_lock_bh(lock: &priv->filters_lock);
398	filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
399	src_port, dst_port);
400	if (filter) {
401	if (filter->rxq_index == rxq_index)
402	goto out;
403
404	filter->rxq_index = rxq_index;
405	} else {
406	filter = mlx4_en_filter_alloc(priv, rxq_index,
407	src_ip, dst_ip, ip_proto,
408	src_port, dst_port, flow_id);
409	if (!filter) {
410	ret = -ENOMEM;
411	goto err;
412	}
413	}
414
415	queue_work(wq: priv->mdev->workqueue, work: &filter->work);
416
417	out:
418	ret = filter->id;
419	err:
420	spin_unlock_bh(lock: &priv->filters_lock);
421
422	return ret;
423	}
424
425	void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
426	{
427	struct mlx4_en_filter *filter, *tmp;
428	LIST_HEAD(del_list);
429
430	spin_lock_bh(lock: &priv->filters_lock);
431	list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
432	list_move(list: &filter->next, head: &del_list);
433	hlist_del(n: &filter->filter_chain);
434	}
435	spin_unlock_bh(lock: &priv->filters_lock);
436
437	list_for_each_entry_safe(filter, tmp, &del_list, next) {
438	cancel_work_sync(work: &filter->work);
439	mlx4_en_filter_free(filter);
440	}
441	}
442
443	static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
444	{
445	struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
446	LIST_HEAD(del_list);
447	int i = 0;
448
449	spin_lock_bh(lock: &priv->filters_lock);
450	list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
451	if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
452	break;
453
454	if (filter->activated &&
455	!work_pending(&filter->work) &&
456	rps_may_expire_flow(dev: priv->dev,
457	rxq_index: filter->rxq_index, flow_id: filter->flow_id,
458	filter_id: filter->id)) {
459	list_move(list: &filter->next, head: &del_list);
460	hlist_del(n: &filter->filter_chain);
461	} else
462	last_filter = filter;
463
464	i++;
465	}
466
467	if (last_filter && (&last_filter->next != priv->filters.next))
468	list_move(list: &priv->filters, head: &last_filter->next);
469
470	spin_unlock_bh(lock: &priv->filters_lock);
471
472	list_for_each_entry_safe(filter, tmp, &del_list, next)
473	mlx4_en_filter_free(filter);
474	}
475	#endif
476
477	static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
478	__be16 proto, u16 vid)
479	{
480	struct mlx4_en_priv *priv = netdev_priv(dev);
481	struct mlx4_en_dev *mdev = priv->mdev;
482	int err;
483	int idx;
484
485	en_dbg(HW, priv, "adding VLAN:%d\n", vid);
486
487	set_bit(nr: vid, addr: priv->active_vlans);
488
489	/* Add VID to port VLAN filter */
490	mutex_lock(&mdev->state_lock);
491	if (mdev->device_up && priv->port_up) {
492	err = mlx4_SET_VLAN_FLTR(dev: mdev->dev, priv);
493	if (err) {
494	en_err(priv, "Failed configuring VLAN filter\n");
495	goto out;
496	}
497	}
498	err = mlx4_register_vlan(dev: mdev->dev, port: priv->port, vlan: vid, index: &idx);
499	if (err)
500	en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
501
502	out:
503	mutex_unlock(lock: &mdev->state_lock);
504	return err;
505	}
506
507	static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
508	__be16 proto, u16 vid)
509	{
510	struct mlx4_en_priv *priv = netdev_priv(dev);
511	struct mlx4_en_dev *mdev = priv->mdev;
512	int err = 0;
513
514	en_dbg(HW, priv, "Killing VID:%d\n", vid);
515
516	clear_bit(nr: vid, addr: priv->active_vlans);
517
518	/* Remove VID from port VLAN filter */
519	mutex_lock(&mdev->state_lock);
520	mlx4_unregister_vlan(dev: mdev->dev, port: priv->port, vlan: vid);
521
522	if (mdev->device_up && priv->port_up) {
523	err = mlx4_SET_VLAN_FLTR(dev: mdev->dev, priv);
524	if (err)
525	en_err(priv, "Failed configuring VLAN filter\n");
526	}
527	mutex_unlock(lock: &mdev->state_lock);
528
529	return err;
530	}
531
532	static void mlx4_en_u64_to_mac(struct net_device *dev, u64 src_mac)
533	{
534	u8 addr[ETH_ALEN];
535
536	u64_to_ether_addr(u: src_mac, addr);
537	eth_hw_addr_set(dev, addr);
538	}
539
540
541	static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv,
542	const unsigned char *addr,
543	int qpn, u64 *reg_id)
544	{
545	int err;
546
547	if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
548	priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
549	return 0; /* do nothing */
550
551	err = mlx4_tunnel_steer_add(dev: priv->mdev->dev, addr, port: priv->port, qpn,
552	prio: MLX4_DOMAIN_NIC, reg_id);
553	if (err) {
554	en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
555	return err;
556	}
557	en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
558	return 0;
559	}
560
561
562	static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
563	const unsigned char *mac, int *qpn, u64 *reg_id)
564	{
565	struct mlx4_en_dev *mdev = priv->mdev;
566	struct mlx4_dev *dev = mdev->dev;
567	int err;
568
569	switch (dev->caps.steering_mode) {
570	case MLX4_STEERING_MODE_B0: {
571	struct mlx4_qp qp;
572	u8 gid[16] = {0};
573
574	qp.qpn = *qpn;
575	memcpy(&gid[10], mac, ETH_ALEN);
576	gid[5] = priv->port;
577
578	err = mlx4_unicast_attach(dev, qp: &qp, gid, block_mcast_loopback: 0, prot: MLX4_PROT_ETH);
579	break;
580	}
581	case MLX4_STEERING_MODE_DEVICE_MANAGED: {
582	struct mlx4_spec_list spec_eth = { {NULL} };
583	__be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
584
585	struct mlx4_net_trans_rule rule = {
586	.queue_mode = MLX4_NET_TRANS_Q_FIFO,
587	.exclusive = 0,
588	.allow_loopback = 1,
589	.promisc_mode = MLX4_FS_REGULAR,
590	.priority = MLX4_DOMAIN_NIC,
591	};
592
593	rule.port = priv->port;
594	rule.qpn = *qpn;
595	INIT_LIST_HEAD(list: &rule.list);
596
597	spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
598	memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
599	memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
600	list_add_tail(new: &spec_eth.list, head: &rule.list);
601
602	err = mlx4_flow_attach(dev, rule: &rule, reg_id);
603	break;
604	}
605	default:
606	return -EINVAL;
607	}
608	if (err)
609	en_warn(priv, "Failed Attaching Unicast\n");
610
611	return err;
612	}
613
614	static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
615	const unsigned char *mac,
616	int qpn, u64 reg_id)
617	{
618	struct mlx4_en_dev *mdev = priv->mdev;
619	struct mlx4_dev *dev = mdev->dev;
620
621	switch (dev->caps.steering_mode) {
622	case MLX4_STEERING_MODE_B0: {
623	struct mlx4_qp qp;
624	u8 gid[16] = {0};
625
626	qp.qpn = qpn;
627	memcpy(&gid[10], mac, ETH_ALEN);
628	gid[5] = priv->port;
629
630	mlx4_unicast_detach(dev, qp: &qp, gid, prot: MLX4_PROT_ETH);
631	break;
632	}
633	case MLX4_STEERING_MODE_DEVICE_MANAGED: {
634	mlx4_flow_detach(dev, reg_id);
635	break;
636	}
637	default:
638	en_err(priv, "Invalid steering mode.\n");
639	}
640	}
641
642	static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
643	{
644	struct mlx4_en_dev *mdev = priv->mdev;
645	struct mlx4_dev *dev = mdev->dev;
646	int index = 0;
647	int err = 0;
648	int *qpn = &priv->base_qpn;
649	u64 mac = ether_addr_to_u64(addr: priv->dev->dev_addr);
650
651	en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
652	priv->dev->dev_addr);
653	index = mlx4_register_mac(dev, port: priv->port, mac);
654	if (index < 0) {
655	err = index;
656	en_err(priv, "Failed adding MAC: %pM\n",
657	priv->dev->dev_addr);
658	return err;
659	}
660
661	en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode);
662
663	if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
664	int base_qpn = mlx4_get_base_qpn(dev, port: priv->port);
665	*qpn = base_qpn + index;
666	return 0;
667	}
668
669	err = mlx4_qp_reserve_range(dev, cnt: 1, align: 1, base: qpn, flags: MLX4_RESERVE_A0_QP,
670	usage: MLX4_RES_USAGE_DRIVER);
671	en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
672	if (err) {
673	en_err(priv, "Failed to reserve qp for mac registration\n");
674	mlx4_unregister_mac(dev, port: priv->port, mac);
675	return err;
676	}
677
678	return 0;
679	}
680
681	static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
682	{
683	struct mlx4_en_dev *mdev = priv->mdev;
684	struct mlx4_dev *dev = mdev->dev;
685	int qpn = priv->base_qpn;
686
687	if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
688	u64 mac = ether_addr_to_u64(addr: priv->dev->dev_addr);
689	en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
690	priv->dev->dev_addr);
691	mlx4_unregister_mac(dev, port: priv->port, mac);
692	} else {
693	en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
694	priv->port, qpn);
695	mlx4_qp_release_range(dev, base_qpn: qpn, cnt: 1);
696	priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
697	}
698	}
699
700	static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
701	unsigned char *new_mac, unsigned char *prev_mac)
702	{
703	struct mlx4_en_dev *mdev = priv->mdev;
704	struct mlx4_dev *dev = mdev->dev;
705	int err = 0;
706	u64 new_mac_u64 = ether_addr_to_u64(addr: new_mac);
707
708	if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
709	struct hlist_head *bucket;
710	unsigned int mac_hash;
711	struct mlx4_mac_entry *entry;
712	struct hlist_node *tmp;
713	u64 prev_mac_u64 = ether_addr_to_u64(addr: prev_mac);
714
715	bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
716	hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
717	if (ether_addr_equal_64bits(addr1: entry->mac, addr2: prev_mac)) {
718	mlx4_en_uc_steer_release(priv, mac: entry->mac,
719	qpn, reg_id: entry->reg_id);
720	mlx4_unregister_mac(dev, port: priv->port,
721	mac: prev_mac_u64);
722	hlist_del_rcu(n: &entry->hlist);
723	synchronize_rcu();
724	memcpy(entry->mac, new_mac, ETH_ALEN);
725	entry->reg_id = 0;
726	mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
727	hlist_add_head_rcu(n: &entry->hlist,
728	h: &priv->mac_hash[mac_hash]);
729	mlx4_register_mac(dev, port: priv->port, mac: new_mac_u64);
730	err = mlx4_en_uc_steer_add(priv, mac: new_mac,
731	qpn: &qpn,
732	reg_id: &entry->reg_id);
733	if (err)
734	return err;
735	if (priv->tunnel_reg_id) {
736	mlx4_flow_detach(dev: priv->mdev->dev, reg_id: priv->tunnel_reg_id);
737	priv->tunnel_reg_id = 0;
738	}
739	err = mlx4_en_tunnel_steer_add(priv, addr: new_mac, qpn,
740	reg_id: &priv->tunnel_reg_id);
741	return err;
742	}
743	}
744	return -EINVAL;
745	}
746
747	return __mlx4_replace_mac(dev, port: priv->port, qpn, new_mac: new_mac_u64);
748	}
749
750	static void mlx4_en_update_user_mac(struct mlx4_en_priv *priv,
751	unsigned char new_mac[ETH_ALEN + 2])
752	{
753	struct mlx4_en_dev *mdev = priv->mdev;
754	int err;
755
756	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_USER_MAC_EN))
757	return;
758
759	err = mlx4_SET_PORT_user_mac(dev: mdev->dev, port: priv->port, user_mac: new_mac);
760	if (err)
761	en_err(priv, "Failed to pass user MAC(%pM) to Firmware for port %d, with error %d\n",
762	new_mac, priv->port, err);
763	}
764
765	static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
766	unsigned char new_mac[ETH_ALEN + 2])
767	{
768	int err = 0;
769
770	if (priv->port_up) {
771	/* Remove old MAC and insert the new one */
772	err = mlx4_en_replace_mac(priv, qpn: priv->base_qpn,
773	new_mac, prev_mac: priv->current_mac);
774	if (err)
775	en_err(priv, "Failed changing HW MAC address\n");
776	} else
777	en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
778
779	if (!err)
780	memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
781
782	return err;
783	}
784
785	static int mlx4_en_set_mac(struct net_device *dev, void *addr)
786	{
787	struct mlx4_en_priv *priv = netdev_priv(dev);
788	struct mlx4_en_dev *mdev = priv->mdev;
789	struct sockaddr *saddr = addr;
790	unsigned char new_mac[ETH_ALEN + 2];
791	int err;
792
793	if (!is_valid_ether_addr(addr: saddr->sa_data))
794	return -EADDRNOTAVAIL;
795
796	mutex_lock(&mdev->state_lock);
797	memcpy(new_mac, saddr->sa_data, ETH_ALEN);
798	err = mlx4_en_do_set_mac(priv, new_mac);
799	if (err)
800	goto out;
801
802	eth_hw_addr_set(dev, addr: saddr->sa_data);
803	mlx4_en_update_user_mac(priv, new_mac);
804	out:
805	mutex_unlock(lock: &mdev->state_lock);
806
807	return err;
808	}
809
810	static void mlx4_en_clear_list(struct net_device *dev)
811	{
812	struct mlx4_en_priv *priv = netdev_priv(dev);
813	struct mlx4_en_mc_list *tmp, *mc_to_del;
814
815	list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
816	list_del(entry: &mc_to_del->list);
817	kfree(objp: mc_to_del);
818	}
819	}
820
821	static void mlx4_en_cache_mclist(struct net_device *dev)
822	{
823	struct mlx4_en_priv *priv = netdev_priv(dev);
824	struct netdev_hw_addr *ha;
825	struct mlx4_en_mc_list *tmp;
826
827	mlx4_en_clear_list(dev);
828	netdev_for_each_mc_addr(ha, dev) {
829	tmp = kzalloc(size: sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
830	if (!tmp) {
831	mlx4_en_clear_list(dev);
832	return;
833	}
834	memcpy(tmp->addr, ha->addr, ETH_ALEN);
835	list_add_tail(new: &tmp->list, head: &priv->mc_list);
836	}
837	}
838
839	static void update_mclist_flags(struct mlx4_en_priv *priv,
840	struct list_head *dst,
841	struct list_head *src)
842	{
843	struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
844	bool found;
845
846	/* Find all the entries that should be removed from dst,
847	* These are the entries that are not found in src
848	*/
849	list_for_each_entry(dst_tmp, dst, list) {
850	found = false;
851	list_for_each_entry(src_tmp, src, list) {
852	if (ether_addr_equal(addr1: dst_tmp->addr, addr2: src_tmp->addr)) {
853	found = true;
854	break;
855	}
856	}
857	if (!found)
858	dst_tmp->action = MCLIST_REM;
859	}
860
861	/* Add entries that exist in src but not in dst
862	* mark them as need to add
863	*/
864	list_for_each_entry(src_tmp, src, list) {
865	found = false;
866	list_for_each_entry(dst_tmp, dst, list) {
867	if (ether_addr_equal(addr1: dst_tmp->addr, addr2: src_tmp->addr)) {
868	dst_tmp->action = MCLIST_NONE;
869	found = true;
870	break;
871	}
872	}
873	if (!found) {
874	new_mc = kmemdup(p: src_tmp,
875	size: sizeof(struct mlx4_en_mc_list),
876	GFP_KERNEL);
877	if (!new_mc)
878	return;
879
880	new_mc->action = MCLIST_ADD;
881	list_add_tail(new: &new_mc->list, head: dst);
882	}
883	}
884	}
885
886	static void mlx4_en_set_rx_mode(struct net_device *dev)
887	{
888	struct mlx4_en_priv *priv = netdev_priv(dev);
889
890	if (!priv->port_up)
891	return;
892
893	queue_work(wq: priv->mdev->workqueue, work: &priv->rx_mode_task);
894	}
895
896	static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
897	struct mlx4_en_dev *mdev)
898	{
899	int err = 0;
900
901	if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
902	if (netif_msg_rx_status(priv))
903	en_warn(priv, "Entering promiscuous mode\n");
904	priv->flags |= MLX4_EN_FLAG_PROMISC;
905
906	/* Enable promiscouos mode */
907	switch (mdev->dev->caps.steering_mode) {
908	case MLX4_STEERING_MODE_DEVICE_MANAGED:
909	err = mlx4_flow_steer_promisc_add(dev: mdev->dev,
910	port: priv->port,
911	qpn: priv->base_qpn,
912	mode: MLX4_FS_ALL_DEFAULT);
913	if (err)
914	en_err(priv, "Failed enabling promiscuous mode\n");
915	priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
916	break;
917
918	case MLX4_STEERING_MODE_B0:
919	err = mlx4_unicast_promisc_add(dev: mdev->dev,
920	qpn: priv->base_qpn,
921	port: priv->port);
922	if (err)
923	en_err(priv, "Failed enabling unicast promiscuous mode\n");
924
925	/* Add the default qp number as multicast
926	* promisc
927	*/
928	if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
929	err = mlx4_multicast_promisc_add(dev: mdev->dev,
930	qpn: priv->base_qpn,
931	port: priv->port);
932	if (err)
933	en_err(priv, "Failed enabling multicast promiscuous mode\n");
934	priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
935	}
936	break;
937
938	case MLX4_STEERING_MODE_A0:
939	err = mlx4_SET_PORT_qpn_calc(dev: mdev->dev,
940	port: priv->port,
941	base_qpn: priv->base_qpn,
942	promisc: 1);
943	if (err)
944	en_err(priv, "Failed enabling promiscuous mode\n");
945	break;
946	}
947
948	/* Disable port multicast filter (unconditionally) */
949	err = mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port, mac: 0,
950	clear: 0, mode: MLX4_MCAST_DISABLE);
951	if (err)
952	en_err(priv, "Failed disabling multicast filter\n");
953	}
954	}
955
956	static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
957	struct mlx4_en_dev *mdev)
958	{
959	int err = 0;
960
961	if (netif_msg_rx_status(priv))
962	en_warn(priv, "Leaving promiscuous mode\n");
963	priv->flags &= ~MLX4_EN_FLAG_PROMISC;
964
965	/* Disable promiscouos mode */
966	switch (mdev->dev->caps.steering_mode) {
967	case MLX4_STEERING_MODE_DEVICE_MANAGED:
968	err = mlx4_flow_steer_promisc_remove(dev: mdev->dev,
969	port: priv->port,
970	mode: MLX4_FS_ALL_DEFAULT);
971	if (err)
972	en_err(priv, "Failed disabling promiscuous mode\n");
973	priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
974	break;
975
976	case MLX4_STEERING_MODE_B0:
977	err = mlx4_unicast_promisc_remove(dev: mdev->dev,
978	qpn: priv->base_qpn,
979	port: priv->port);
980	if (err)
981	en_err(priv, "Failed disabling unicast promiscuous mode\n");
982	/* Disable Multicast promisc */
983	if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
984	err = mlx4_multicast_promisc_remove(dev: mdev->dev,
985	qpn: priv->base_qpn,
986	port: priv->port);
987	if (err)
988	en_err(priv, "Failed disabling multicast promiscuous mode\n");
989	priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
990	}
991	break;
992
993	case MLX4_STEERING_MODE_A0:
994	err = mlx4_SET_PORT_qpn_calc(dev: mdev->dev,
995	port: priv->port,
996	base_qpn: priv->base_qpn, promisc: 0);
997	if (err)
998	en_err(priv, "Failed disabling promiscuous mode\n");
999	break;
1000	}
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(dev: mdev->dev, port: priv->port, mac: 0,
1015	clear: 0, mode: 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(dev: mdev->dev,
1024	port: priv->port,
1025	qpn: priv->base_qpn,
1026	mode: MLX4_FS_MC_DEFAULT);
1027	break;
1028
1029	case MLX4_STEERING_MODE_B0:
1030	err = mlx4_multicast_promisc_add(dev: mdev->dev,
1031	qpn: priv->base_qpn,
1032	port: 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(dev: mdev->dev,
1048	port: priv->port,
1049	mode: MLX4_FS_MC_DEFAULT);
1050	break;
1051
1052	case MLX4_STEERING_MODE_B0:
1053	err = mlx4_multicast_promisc_remove(dev: mdev->dev,
1054	qpn: priv->base_qpn,
1055	port: 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(dev: mdev->dev, port: priv->port, mac: 0,
1067	clear: 0, mode: 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(dev: mdev->dev, port: priv->port, ETH_BCAST,
1073	clear: 1, mode: 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 semaphore
1077	*/
1078	netif_addr_lock_bh(dev);
1079	mlx4_en_cache_mclist(dev);
1080	netif_addr_unlock_bh(dev);
1081	list_for_each_entry(mclist, &priv->mc_list, list) {
1082	mcast_addr = ether_addr_to_u64(addr: mclist->addr);
1083	mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port,
1084	mac: mcast_addr, clear: 0, mode: MLX4_MCAST_CONFIG);
1085	}
1086	err = mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port, mac: 0,
1087	clear: 0, mode: MLX4_MCAST_ENABLE);
1088	if (err)
1089	en_err(priv, "Failed enabling multicast filter\n");
1090
1091	update_mclist_flags(priv, dst: &priv->curr_list, src: &priv->mc_list);
1092	list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1093	if (mclist->action == MCLIST_REM) {
1094	/* detach this address and delete from list */
1095	memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1096	mc_list[5] = priv->port;
1097	err = mlx4_multicast_detach(dev: mdev->dev,
1098	qp: priv->rss_map.indir_qp,
1099	gid: mc_list,
1100	protocol: MLX4_PROT_ETH,
1101	reg_id: mclist->reg_id);
1102	if (err)
1103	en_err(priv, "Fail to detach multicast address\n");
1104
1105	if (mclist->tunnel_reg_id) {
1106	err = mlx4_flow_detach(dev: priv->mdev->dev, reg_id: mclist->tunnel_reg_id);
1107	if (err)
1108	en_err(priv, "Failed to detach multicast address\n");
1109	}
1110
1111	/* remove from list */
1112	list_del(entry: &mclist->list);
1113	kfree(objp: mclist);
1114	} else if (mclist->action == MCLIST_ADD) {
1115	/* attach the address */
1116	memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1117	/* needed for B0 steering support */
1118	mc_list[5] = priv->port;
1119	err = mlx4_multicast_attach(dev: mdev->dev,
1120	qp: priv->rss_map.indir_qp,
1121	gid: mc_list,
1122	port: priv->port, block_mcast_loopback: 0,
1123	protocol: MLX4_PROT_ETH,
1124	reg_id: &mclist->reg_id);
1125	if (err)
1126	en_err(priv, "Fail to attach multicast address\n");
1127
1128	err = mlx4_en_tunnel_steer_add(priv, addr: &mc_list[10], qpn: priv->base_qpn,
1129	reg_id: &mclist->tunnel_reg_id);
1130	if (err)
1131	en_err(priv, "Failed to attach multicast address\n");
1132	}
1133	}
1134	}
1135	}
1136
1137	static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1138	struct net_device *dev,
1139	struct mlx4_en_dev *mdev)
1140	{
1141	struct netdev_hw_addr *ha;
1142	struct mlx4_mac_entry *entry;
1143	struct hlist_node *tmp;
1144	bool found;
1145	u64 mac;
1146	int err = 0;
1147	struct hlist_head *bucket;
1148	unsigned int i;
1149	int removed = 0;
1150	u32 prev_flags;
1151
1152	/* Note that we do not need to protect our mac_hash traversal with rcu,
1153	* since all modification code is protected by mdev->state_lock
1154	*/
1155
1156	/* find what to remove */
1157	for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1158	bucket = &priv->mac_hash[i];
1159	hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1160	found = false;
1161	netdev_for_each_uc_addr(ha, dev) {
1162	if (ether_addr_equal_64bits(addr1: entry->mac,
1163	addr2: ha->addr)) {
1164	found = true;
1165	break;
1166	}
1167	}
1168
1169	/* MAC address of the port is not in uc list */
1170	if (ether_addr_equal_64bits(addr1: entry->mac,
1171	addr2: priv->current_mac))
1172	found = true;
1173
1174	if (!found) {
1175	mac = ether_addr_to_u64(addr: entry->mac);
1176	mlx4_en_uc_steer_release(priv, mac: entry->mac,
1177	qpn: priv->base_qpn,
1178	reg_id: entry->reg_id);
1179	mlx4_unregister_mac(dev: mdev->dev, port: priv->port, mac);
1180
1181	hlist_del_rcu(n: &entry->hlist);
1182	kfree_rcu(entry, rcu);
1183	en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1184	entry->mac, priv->port);
1185	++removed;
1186	}
1187	}
1188	}
1189
1190	/* if we didn't remove anything, there is no use in trying to add
1191	* again once we are in a forced promisc mode state
1192	*/
1193	if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1194	return;
1195
1196	prev_flags = priv->flags;
1197	priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1198
1199	/* find what to add */
1200	netdev_for_each_uc_addr(ha, dev) {
1201	found = false;
1202	bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1203	hlist_for_each_entry(entry, bucket, hlist) {
1204	if (ether_addr_equal_64bits(addr1: entry->mac, addr2: ha->addr)) {
1205	found = true;
1206	break;
1207	}
1208	}
1209
1210	if (!found) {
1211	entry = kmalloc(size: sizeof(*entry), GFP_KERNEL);
1212	if (!entry) {
1213	en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1214	ha->addr, priv->port);
1215	priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1216	break;
1217	}
1218	mac = ether_addr_to_u64(addr: ha->addr);
1219	memcpy(entry->mac, ha->addr, ETH_ALEN);
1220	err = mlx4_register_mac(dev: mdev->dev, port: priv->port, mac);
1221	if (err < 0) {
1222	en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1223	ha->addr, priv->port, err);
1224	kfree(objp: entry);
1225	priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1226	break;
1227	}
1228	err = mlx4_en_uc_steer_add(priv, mac: ha->addr,
1229	qpn: &priv->base_qpn,
1230	reg_id: &entry->reg_id);
1231	if (err) {
1232	en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1233	ha->addr, priv->port, err);
1234	mlx4_unregister_mac(dev: mdev->dev, port: priv->port, mac);
1235	kfree(objp: entry);
1236	priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1237	break;
1238	} else {
1239	unsigned int mac_hash;
1240	en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1241	ha->addr, priv->port);
1242	mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1243	bucket = &priv->mac_hash[mac_hash];
1244	hlist_add_head_rcu(n: &entry->hlist, h: bucket);
1245	}
1246	}
1247	}
1248
1249	if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1250	en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1251	priv->port);
1252	} else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1253	en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1254	priv->port);
1255	}
1256	}
1257
1258	static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1259	{
1260	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1261	rx_mode_task);
1262	struct mlx4_en_dev *mdev = priv->mdev;
1263	struct net_device *dev = priv->dev;
1264
1265	mutex_lock(&mdev->state_lock);
1266	if (!mdev->device_up) {
1267	en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1268	goto out;
1269	}
1270	if (!priv->port_up) {
1271	en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1272	goto out;
1273	}
1274
1275	if (!netif_carrier_ok(dev)) {
1276	if (!mlx4_en_QUERY_PORT(mdev, port: priv->port)) {
1277	if (priv->port_state.link_state) {
1278	netif_carrier_on(dev);
1279	en_dbg(LINK, priv, "Link Up\n");
1280	}
1281	}
1282	}
1283
1284	if (dev->priv_flags & IFF_UNICAST_FLT)
1285	mlx4_en_do_uc_filter(priv, dev, mdev);
1286
1287	/* Promsicuous mode: disable all filters */
1288	if ((dev->flags & IFF_PROMISC) ||
1289	(priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1290	mlx4_en_set_promisc_mode(priv, mdev);
1291	goto out;
1292	}
1293
1294	/* Not in promiscuous mode */
1295	if (priv->flags & MLX4_EN_FLAG_PROMISC)
1296	mlx4_en_clear_promisc_mode(priv, mdev);
1297
1298	mlx4_en_do_multicast(priv, dev, mdev);
1299	out:
1300	mutex_unlock(lock: &mdev->state_lock);
1301	}
1302
1303	static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1304	{
1305	u64 reg_id;
1306	int err = 0;
1307	int *qpn = &priv->base_qpn;
1308	struct mlx4_mac_entry *entry;
1309
1310	err = mlx4_en_uc_steer_add(priv, mac: priv->dev->dev_addr, qpn, reg_id: &reg_id);
1311	if (err)
1312	return err;
1313
1314	err = mlx4_en_tunnel_steer_add(priv, addr: priv->dev->dev_addr, qpn: *qpn,
1315	reg_id: &priv->tunnel_reg_id);
1316	if (err)
1317	goto tunnel_err;
1318
1319	entry = kmalloc(size: sizeof(*entry), GFP_KERNEL);
1320	if (!entry) {
1321	err = -ENOMEM;
1322	goto alloc_err;
1323	}
1324
1325	memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1326	memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1327	entry->reg_id = reg_id;
1328	hlist_add_head_rcu(n: &entry->hlist,
1329	h: &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1330
1331	return 0;
1332
1333	alloc_err:
1334	if (priv->tunnel_reg_id)
1335	mlx4_flow_detach(dev: priv->mdev->dev, reg_id: priv->tunnel_reg_id);
1336
1337	tunnel_err:
1338	mlx4_en_uc_steer_release(priv, mac: priv->dev->dev_addr, qpn: *qpn, reg_id);
1339	return err;
1340	}
1341
1342	static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1343	{
1344	u64 mac;
1345	unsigned int i;
1346	int qpn = priv->base_qpn;
1347	struct hlist_head *bucket;
1348	struct hlist_node *tmp;
1349	struct mlx4_mac_entry *entry;
1350
1351	for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1352	bucket = &priv->mac_hash[i];
1353	hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1354	mac = ether_addr_to_u64(addr: entry->mac);
1355	en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1356	entry->mac);
1357	mlx4_en_uc_steer_release(priv, mac: entry->mac,
1358	qpn, reg_id: entry->reg_id);
1359
1360	mlx4_unregister_mac(dev: priv->mdev->dev, port: priv->port, mac);
1361	hlist_del_rcu(n: &entry->hlist);
1362	kfree_rcu(entry, rcu);
1363	}
1364	}
1365
1366	if (priv->tunnel_reg_id) {
1367	mlx4_flow_detach(dev: priv->mdev->dev, reg_id: priv->tunnel_reg_id);
1368	priv->tunnel_reg_id = 0;
1369	}
1370	}
1371
1372	static void mlx4_en_tx_timeout(struct net_device *dev, unsigned int txqueue)
1373	{
1374	struct mlx4_en_priv *priv = netdev_priv(dev);
1375	struct mlx4_en_dev *mdev = priv->mdev;
1376	struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][txqueue];
1377
1378	if (netif_msg_timer(priv))
1379	en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1380
1381	en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1382	txqueue, tx_ring->qpn, tx_ring->sp_cqn,
1383	tx_ring->cons, tx_ring->prod);
1384
1385	priv->port_stats.tx_timeout++;
1386	if (!test_and_set_bit(nr: MLX4_EN_STATE_FLAG_RESTARTING, addr: &priv->state)) {
1387	en_dbg(DRV, priv, "Scheduling port restart\n");
1388	queue_work(wq: mdev->workqueue, work: &priv->restart_task);
1389	}
1390	}
1391
1392
1393	static void
1394	mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1395	{
1396	struct mlx4_en_priv *priv = netdev_priv(dev);
1397
1398	spin_lock_bh(lock: &priv->stats_lock);
1399	mlx4_en_fold_software_stats(dev);
1400	netdev_stats_to_stats64(stats64: stats, netdev_stats: &dev->stats);
1401	spin_unlock_bh(lock: &priv->stats_lock);
1402	}
1403
1404	static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1405	{
1406	struct mlx4_en_cq *cq;
1407	int i, t;
1408
1409	/* If we haven't received a specific coalescing setting
1410	* (module param), we set the moderation parameters as follows:
1411	* - moder_cnt is set to the number of mtu sized packets to
1412	* satisfy our coalescing target.
1413	* - moder_time is set to a fixed value.
1414	*/
1415	priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1416	priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1417	priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1418	priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1419	en_dbg(INTR, priv, "Default coalescing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1420	priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1421
1422	/* Setup cq moderation params */
1423	for (i = 0; i < priv->rx_ring_num; i++) {
1424	cq = priv->rx_cq[i];
1425	cq->moder_cnt = priv->rx_frames;
1426	cq->moder_time = priv->rx_usecs;
1427	priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1428	priv->last_moder_packets[i] = 0;
1429	priv->last_moder_bytes[i] = 0;
1430	}
1431
1432	for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1433	for (i = 0; i < priv->tx_ring_num[t]; i++) {
1434	cq = priv->tx_cq[t][i];
1435	cq->moder_cnt = priv->tx_frames;
1436	cq->moder_time = priv->tx_usecs;
1437	}
1438	}
1439
1440	/* Reset auto-moderation params */
1441	priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1442	priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1443	priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1444	priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1445	priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1446	priv->adaptive_rx_coal = 1;
1447	priv->last_moder_jiffies = 0;
1448	priv->last_moder_tx_packets = 0;
1449	}
1450
1451	static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1452	{
1453	unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1454	u32 pkt_rate_high, pkt_rate_low;
1455	struct mlx4_en_cq *cq;
1456	unsigned long packets;
1457	unsigned long rate;
1458	unsigned long avg_pkt_size;
1459	unsigned long rx_packets;
1460	unsigned long rx_bytes;
1461	unsigned long rx_pkt_diff;
1462	int moder_time;
1463	int ring, err;
1464
1465	if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1466	return;
1467
1468	pkt_rate_low = READ_ONCE(priv->pkt_rate_low);
1469	pkt_rate_high = READ_ONCE(priv->pkt_rate_high);
1470
1471	for (ring = 0; ring < priv->rx_ring_num; ring++) {
1472	rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1473	rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1474
1475	rx_pkt_diff = rx_packets - priv->last_moder_packets[ring];
1476	packets = rx_pkt_diff;
1477	rate = packets * HZ / period;
1478	avg_pkt_size = packets ? (rx_bytes -
1479	priv->last_moder_bytes[ring]) / packets : 0;
1480
1481	/* Apply auto-moderation only when packet rate
1482	* exceeds a rate that it matters */
1483	if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1484	avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1485	if (rate <= pkt_rate_low)
1486	moder_time = priv->rx_usecs_low;
1487	else if (rate >= pkt_rate_high)
1488	moder_time = priv->rx_usecs_high;
1489	else
1490	moder_time = (rate - pkt_rate_low) *
1491	(priv->rx_usecs_high - priv->rx_usecs_low) /
1492	(pkt_rate_high - pkt_rate_low) +
1493	priv->rx_usecs_low;
1494	} else {
1495	moder_time = priv->rx_usecs_low;
1496	}
1497
1498	cq = priv->rx_cq[ring];
1499	if (moder_time != priv->last_moder_time[ring] ||
1500	cq->moder_cnt != priv->rx_frames) {
1501	priv->last_moder_time[ring] = moder_time;
1502	cq->moder_time = moder_time;
1503	cq->moder_cnt = priv->rx_frames;
1504	err = mlx4_en_set_cq_moder(priv, cq);
1505	if (err)
1506	en_err(priv, "Failed modifying moderation for cq:%d\n",
1507	ring);
1508	}
1509	priv->last_moder_packets[ring] = rx_packets;
1510	priv->last_moder_bytes[ring] = rx_bytes;
1511	}
1512
1513	priv->last_moder_jiffies = jiffies;
1514	}
1515
1516	static void mlx4_en_do_get_stats(struct work_struct *work)
1517	{
1518	struct delayed_work *delay = to_delayed_work(work);
1519	struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1520	stats_task);
1521	struct mlx4_en_dev *mdev = priv->mdev;
1522	int err;
1523
1524	mutex_lock(&mdev->state_lock);
1525	if (mdev->device_up) {
1526	if (priv->port_up) {
1527	err = mlx4_en_DUMP_ETH_STATS(mdev, port: priv->port, reset: 0);
1528	if (err)
1529	en_dbg(HW, priv, "Could not update stats\n");
1530
1531	mlx4_en_auto_moderation(priv);
1532	}
1533
1534	queue_delayed_work(wq: mdev->workqueue, dwork: &priv->stats_task, STATS_DELAY);
1535	}
1536	if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1537	mlx4_en_do_set_mac(priv, new_mac: priv->current_mac);
1538	mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1539	}
1540	mutex_unlock(lock: &mdev->state_lock);
1541	}
1542
1543	/* mlx4_en_service_task - Run service task for tasks that needed to be done
1544	* periodically
1545	*/
1546	static void mlx4_en_service_task(struct work_struct *work)
1547	{
1548	struct delayed_work *delay = to_delayed_work(work);
1549	struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1550	service_task);
1551	struct mlx4_en_dev *mdev = priv->mdev;
1552
1553	mutex_lock(&mdev->state_lock);
1554	if (mdev->device_up) {
1555	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1556	mlx4_en_ptp_overflow_check(mdev);
1557
1558	mlx4_en_recover_from_oom(priv);
1559	queue_delayed_work(wq: mdev->workqueue, dwork: &priv->service_task,
1560	SERVICE_TASK_DELAY);
1561	}
1562	mutex_unlock(lock: &mdev->state_lock);
1563	}
1564
1565	static void mlx4_en_linkstate(struct mlx4_en_priv *priv)
1566	{
1567	struct mlx4_en_port_state *port_state = &priv->port_state;
1568	struct mlx4_en_dev *mdev = priv->mdev;
1569	struct net_device *dev = priv->dev;
1570	bool up;
1571
1572	if (mlx4_en_QUERY_PORT(mdev, port: priv->port))
1573	port_state->link_state = MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN;
1574
1575	up = port_state->link_state == MLX4_PORT_STATE_DEV_EVENT_PORT_UP;
1576	if (up == netif_carrier_ok(dev))
1577	netif_carrier_event(dev);
1578	if (!up) {
1579	en_info(priv, "Link Down\n");
1580	netif_carrier_off(dev);
1581	} else {
1582	en_info(priv, "Link Up\n");
1583	netif_carrier_on(dev);
1584	}
1585	}
1586
1587	static void mlx4_en_linkstate_work(struct work_struct *work)
1588	{
1589	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1590	linkstate_task);
1591	struct mlx4_en_dev *mdev = priv->mdev;
1592
1593	mutex_lock(&mdev->state_lock);
1594	mlx4_en_linkstate(priv);
1595	mutex_unlock(lock: &mdev->state_lock);
1596	}
1597
1598	static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1599	{
1600	struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1601	int numa_node = priv->mdev->dev->numa_node;
1602
1603	if (!zalloc_cpumask_var(mask: &ring->affinity_mask, GFP_KERNEL))
1604	return -ENOMEM;
1605
1606	cpumask_set_cpu(cpu: cpumask_local_spread(i: ring_idx, node: numa_node),
1607	dstp: ring->affinity_mask);
1608	return 0;
1609	}
1610
1611	static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1612	{
1613	free_cpumask_var(mask: priv->rx_ring[ring_idx]->affinity_mask);
1614	}
1615
1616	static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1617	int tx_ring_idx)
1618	{
1619	struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1620	int rr_index = tx_ring_idx;
1621
1622	tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1623	tx_ring->recycle_ring = priv->rx_ring[rr_index];
1624	en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1625	TX_XDP, tx_ring_idx, rr_index);
1626	}
1627
1628	int mlx4_en_start_port(struct net_device *dev)
1629	{
1630	struct mlx4_en_priv *priv = netdev_priv(dev);
1631	struct mlx4_en_dev *mdev = priv->mdev;
1632	struct mlx4_en_cq *cq;
1633	struct mlx4_en_tx_ring *tx_ring;
1634	int rx_index = 0;
1635	int err = 0;
1636	int i, t;
1637	int j;
1638	u8 mc_list[16] = {0};
1639
1640	if (priv->port_up) {
1641	en_dbg(DRV, priv, "start port called while port already up\n");
1642	return 0;
1643	}
1644
1645	INIT_LIST_HEAD(list: &priv->mc_list);
1646	INIT_LIST_HEAD(list: &priv->curr_list);
1647	INIT_LIST_HEAD(list: &priv->ethtool_list);
1648	memset(&priv->ethtool_rules[0], 0,
1649	sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1650
1651	/* Calculate Rx buf size */
1652	dev->mtu = min(dev->mtu, priv->max_mtu);
1653	mlx4_en_calc_rx_buf(dev);
1654	en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1655
1656	/* Configure rx cq's and rings */
1657	err = mlx4_en_activate_rx_rings(priv);
1658	if (err) {
1659	en_err(priv, "Failed to activate RX rings\n");
1660	return err;
1661	}
1662	for (i = 0; i < priv->rx_ring_num; i++) {
1663	cq = priv->rx_cq[i];
1664
1665	err = mlx4_en_init_affinity_hint(priv, ring_idx: i);
1666	if (err) {
1667	en_err(priv, "Failed preparing IRQ affinity hint\n");
1668	goto cq_err;
1669	}
1670
1671	err = mlx4_en_activate_cq(priv, cq, cq_idx: i);
1672	if (err) {
1673	en_err(priv, "Failed activating Rx CQ\n");
1674	mlx4_en_free_affinity_hint(priv, ring_idx: i);
1675	goto cq_err;
1676	}
1677
1678	for (j = 0; j < cq->size; j++) {
1679	struct mlx4_cqe *cqe = NULL;
1680
1681	cqe = mlx4_en_get_cqe(buf: cq->buf, idx: j, cqe_sz: priv->cqe_size) +
1682	priv->cqe_factor;
1683	cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1684	}
1685
1686	err = mlx4_en_set_cq_moder(priv, cq);
1687	if (err) {
1688	en_err(priv, "Failed setting cq moderation parameters\n");
1689	mlx4_en_deactivate_cq(priv, cq);
1690	mlx4_en_free_affinity_hint(priv, ring_idx: i);
1691	goto cq_err;
1692	}
1693	mlx4_en_arm_cq(priv, cq);
1694	priv->rx_ring[i]->cqn = cq->mcq.cqn;
1695	++rx_index;
1696	}
1697
1698	/* Set qp number */
1699	en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1700	err = mlx4_en_get_qp(priv);
1701	if (err) {
1702	en_err(priv, "Failed getting eth qp\n");
1703	goto cq_err;
1704	}
1705	mdev->mac_removed[priv->port] = 0;
1706
1707	priv->counter_index =
1708	mlx4_get_default_counter_index(dev: mdev->dev, port: priv->port);
1709
1710	err = mlx4_en_config_rss_steer(priv);
1711	if (err) {
1712	en_err(priv, "Failed configuring rss steering\n");
1713	goto mac_err;
1714	}
1715
1716	err = mlx4_en_create_drop_qp(priv);
1717	if (err)
1718	goto rss_err;
1719
1720	/* Configure tx cq's and rings */
1721	for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1722	u8 num_tx_rings_p_up = t == TX ?
1723	priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1724
1725	for (i = 0; i < priv->tx_ring_num[t]; i++) {
1726	/* Configure cq */
1727	cq = priv->tx_cq[t][i];
1728	err = mlx4_en_activate_cq(priv, cq, cq_idx: i);
1729	if (err) {
1730	en_err(priv, "Failed allocating Tx CQ\n");
1731	goto tx_err;
1732	}
1733	err = mlx4_en_set_cq_moder(priv, cq);
1734	if (err) {
1735	en_err(priv, "Failed setting cq moderation parameters\n");
1736	mlx4_en_deactivate_cq(priv, cq);
1737	goto tx_err;
1738	}
1739	en_dbg(DRV, priv,
1740	"Resetting index of collapsed CQ:%d to -1\n", i);
1741	cq->buf->wqe_index = cpu_to_be16(0xffff);
1742
1743	/* Configure ring */
1744	tx_ring = priv->tx_ring[t][i];
1745	err = mlx4_en_activate_tx_ring(priv, ring: tx_ring,
1746	cq: cq->mcq.cqn,
1747	user_prio: i / num_tx_rings_p_up);
1748	if (err) {
1749	en_err(priv, "Failed allocating Tx ring\n");
1750	mlx4_en_deactivate_cq(priv, cq);
1751	goto tx_err;
1752	}
1753	clear_bit(nr: MLX4_EN_TX_RING_STATE_RECOVERING, addr: &tx_ring->state);
1754	if (t != TX_XDP) {
1755	tx_ring->tx_queue = netdev_get_tx_queue(dev, index: i);
1756	tx_ring->recycle_ring = NULL;
1757
1758	/* Arm CQ for TX completions */
1759	mlx4_en_arm_cq(priv, cq);
1760
1761	} else {
1762	mlx4_en_init_tx_xdp_ring_descs(priv, ring: tx_ring);
1763	mlx4_en_init_recycle_ring(priv, tx_ring_idx: i);
1764	/* XDP TX CQ should never be armed */
1765	}
1766
1767	/* Set initial ownership of all Tx TXBBs to SW (1) */
1768	for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1769	*((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1770	}
1771	}
1772
1773	/* Configure port */
1774	err = mlx4_SET_PORT_general(dev: mdev->dev, port: priv->port,
1775	mtu: priv->rx_skb_size + ETH_FCS_LEN,
1776	pptx: priv->prof->tx_pause,
1777	pfctx: priv->prof->tx_ppp,
1778	pprx: priv->prof->rx_pause,
1779	pfcrx: priv->prof->rx_ppp);
1780	if (err) {
1781	en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1782	priv->port, err);
1783	goto tx_err;
1784	}
1785
1786	err = mlx4_SET_PORT_user_mtu(dev: mdev->dev, port: priv->port, user_mtu: dev->mtu);
1787	if (err) {
1788	en_err(priv, "Failed to pass user MTU(%d) to Firmware for port %d, with error %d\n",
1789	dev->mtu, priv->port, err);
1790	goto tx_err;
1791	}
1792
1793	/* Set default qp number */
1794	err = mlx4_SET_PORT_qpn_calc(dev: mdev->dev, port: priv->port, base_qpn: priv->base_qpn, promisc: 0);
1795	if (err) {
1796	en_err(priv, "Failed setting default qp numbers\n");
1797	goto tx_err;
1798	}
1799
1800	if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1801	err = mlx4_SET_PORT_VXLAN(dev: mdev->dev, port: priv->port, steering: VXLAN_STEER_BY_OUTER_MAC, enable: 1);
1802	if (err) {
1803	en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1804	err);
1805	goto tx_err;
1806	}
1807	}
1808
1809	/* Init port */
1810	en_dbg(HW, priv, "Initializing port\n");
1811	err = mlx4_INIT_PORT(dev: mdev->dev, port: priv->port);
1812	if (err) {
1813	en_err(priv, "Failed Initializing port\n");
1814	goto tx_err;
1815	}
1816
1817	/* Set Unicast and VXLAN steering rules */
1818	if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1819	mlx4_en_set_rss_steer_rules(priv))
1820	mlx4_warn(mdev, "Failed setting steering rules\n");
1821
1822	/* Attach rx QP to broadcast address */
1823	eth_broadcast_addr(addr: &mc_list[10]);
1824	mc_list[5] = priv->port; /* needed for B0 steering support */
1825	if (mlx4_multicast_attach(dev: mdev->dev, qp: priv->rss_map.indir_qp, gid: mc_list,
1826	port: priv->port, block_mcast_loopback: 0, protocol: MLX4_PROT_ETH,
1827	reg_id: &priv->broadcast_id))
1828	mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1829
1830	/* Must redo promiscuous mode setup. */
1831	priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1832
1833	/* Schedule multicast task to populate multicast list */
1834	queue_work(wq: mdev->workqueue, work: &priv->rx_mode_task);
1835
1836	if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1837	udp_tunnel_nic_reset_ntf(dev);
1838
1839	priv->port_up = true;
1840
1841	/* Process all completions if exist to prevent
1842	* the queues freezing if they are full
1843	*/
1844	for (i = 0; i < priv->rx_ring_num; i++) {
1845	local_bh_disable();
1846	napi_schedule(n: &priv->rx_cq[i]->napi);
1847	local_bh_enable();
1848	}
1849
1850	clear_bit(nr: MLX4_EN_STATE_FLAG_RESTARTING, addr: &priv->state);
1851	netif_tx_start_all_queues(dev);
1852	netif_device_attach(dev);
1853
1854	return 0;
1855
1856	tx_err:
1857	if (t == MLX4_EN_NUM_TX_TYPES) {
1858	t--;
1859	i = priv->tx_ring_num[t];
1860	}
1861	while (t >= 0) {
1862	while (i--) {
1863	mlx4_en_deactivate_tx_ring(priv, ring: priv->tx_ring[t][i]);
1864	mlx4_en_deactivate_cq(priv, cq: priv->tx_cq[t][i]);
1865	}
1866	if (!t--)
1867	break;
1868	i = priv->tx_ring_num[t];
1869	}
1870	mlx4_en_destroy_drop_qp(priv);
1871	rss_err:
1872	mlx4_en_release_rss_steer(priv);
1873	mac_err:
1874	mlx4_en_put_qp(priv);
1875	cq_err:
1876	while (rx_index--) {
1877	mlx4_en_deactivate_cq(priv, cq: priv->rx_cq[rx_index]);
1878	mlx4_en_free_affinity_hint(priv, ring_idx: rx_index);
1879	}
1880	for (i = 0; i < priv->rx_ring_num; i++)
1881	mlx4_en_deactivate_rx_ring(priv, ring: priv->rx_ring[i]);
1882
1883	return err; /* need to close devices */
1884	}
1885
1886
1887	void mlx4_en_stop_port(struct net_device *dev, int detach)
1888	{
1889	struct mlx4_en_priv *priv = netdev_priv(dev);
1890	struct mlx4_en_dev *mdev = priv->mdev;
1891	struct mlx4_en_mc_list *mclist, *tmp;
1892	struct ethtool_flow_id *flow, *tmp_flow;
1893	int i, t;
1894	u8 mc_list[16] = {0};
1895
1896	if (!priv->port_up) {
1897	en_dbg(DRV, priv, "stop port called while port already down\n");
1898	return;
1899	}
1900
1901	/* close port*/
1902	mlx4_CLOSE_PORT(dev: mdev->dev, port: priv->port);
1903
1904	/* Synchronize with tx routine */
1905	netif_tx_lock_bh(dev);
1906	if (detach)
1907	netif_device_detach(dev);
1908	netif_tx_stop_all_queues(dev);
1909	netif_tx_unlock_bh(dev);
1910
1911	netif_tx_disable(dev);
1912
1913	spin_lock_bh(lock: &priv->stats_lock);
1914	mlx4_en_fold_software_stats(dev);
1915	/* Set port as not active */
1916	priv->port_up = false;
1917	spin_unlock_bh(lock: &priv->stats_lock);
1918
1919	priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1920
1921	/* Promsicuous mode */
1922	if (mdev->dev->caps.steering_mode ==
1923	MLX4_STEERING_MODE_DEVICE_MANAGED) {
1924	priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1925	MLX4_EN_FLAG_MC_PROMISC);
1926	mlx4_flow_steer_promisc_remove(dev: mdev->dev,
1927	port: priv->port,
1928	mode: MLX4_FS_ALL_DEFAULT);
1929	mlx4_flow_steer_promisc_remove(dev: mdev->dev,
1930	port: priv->port,
1931	mode: MLX4_FS_MC_DEFAULT);
1932	} else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1933	priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1934
1935	/* Disable promiscouos mode */
1936	mlx4_unicast_promisc_remove(dev: mdev->dev, qpn: priv->base_qpn,
1937	port: priv->port);
1938
1939	/* Disable Multicast promisc */
1940	if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1941	mlx4_multicast_promisc_remove(dev: mdev->dev, qpn: priv->base_qpn,
1942	port: priv->port);
1943	priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1944	}
1945	}
1946
1947	/* Detach All multicasts */
1948	eth_broadcast_addr(addr: &mc_list[10]);
1949	mc_list[5] = priv->port; /* needed for B0 steering support */
1950	mlx4_multicast_detach(dev: mdev->dev, qp: priv->rss_map.indir_qp, gid: mc_list,
1951	protocol: MLX4_PROT_ETH, reg_id: priv->broadcast_id);
1952	list_for_each_entry(mclist, &priv->curr_list, list) {
1953	memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1954	mc_list[5] = priv->port;
1955	mlx4_multicast_detach(dev: mdev->dev, qp: priv->rss_map.indir_qp,
1956	gid: mc_list, protocol: MLX4_PROT_ETH, reg_id: mclist->reg_id);
1957	if (mclist->tunnel_reg_id)
1958	mlx4_flow_detach(dev: mdev->dev, reg_id: mclist->tunnel_reg_id);
1959	}
1960	mlx4_en_clear_list(dev);
1961	list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1962	list_del(entry: &mclist->list);
1963	kfree(objp: mclist);
1964	}
1965
1966	/* Flush multicast filter */
1967	mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port, mac: 0, clear: 1, mode: MLX4_MCAST_CONFIG);
1968
1969	/* Remove flow steering rules for the port*/
1970	if (mdev->dev->caps.steering_mode ==
1971	MLX4_STEERING_MODE_DEVICE_MANAGED) {
1972	ASSERT_RTNL();
1973	list_for_each_entry_safe(flow, tmp_flow,
1974	&priv->ethtool_list, list) {
1975	mlx4_flow_detach(dev: mdev->dev, reg_id: flow->id);
1976	list_del(entry: &flow->list);
1977	}
1978	}
1979
1980	mlx4_en_destroy_drop_qp(priv);
1981
1982	/* Free TX Rings */
1983	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1984	for (i = 0; i < priv->tx_ring_num[t]; i++) {
1985	mlx4_en_deactivate_tx_ring(priv, ring: priv->tx_ring[t][i]);
1986	mlx4_en_deactivate_cq(priv, cq: priv->tx_cq[t][i]);
1987	}
1988	}
1989	msleep(msecs: 10);
1990
1991	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1992	for (i = 0; i < priv->tx_ring_num[t]; i++)
1993	mlx4_en_free_tx_buf(dev, ring: priv->tx_ring[t][i]);
1994
1995	if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1996	mlx4_en_delete_rss_steer_rules(priv);
1997
1998	/* Free RSS qps */
1999	mlx4_en_release_rss_steer(priv);
2000
2001	/* Unregister Mac address for the port */
2002	mlx4_en_put_qp(priv);
2003	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
2004	mdev->mac_removed[priv->port] = 1;
2005
2006	/* Free RX Rings */
2007	for (i = 0; i < priv->rx_ring_num; i++) {
2008	struct mlx4_en_cq *cq = priv->rx_cq[i];
2009
2010	napi_synchronize(n: &cq->napi);
2011	mlx4_en_deactivate_rx_ring(priv, ring: priv->rx_ring[i]);
2012	mlx4_en_deactivate_cq(priv, cq);
2013
2014	mlx4_en_free_affinity_hint(priv, ring_idx: i);
2015	}
2016	}
2017
2018	static void mlx4_en_restart(struct work_struct *work)
2019	{
2020	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2021	restart_task);
2022	struct mlx4_en_dev *mdev = priv->mdev;
2023	struct net_device *dev = priv->dev;
2024
2025	en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
2026
2027	rtnl_lock();
2028	mutex_lock(&mdev->state_lock);
2029	if (priv->port_up) {
2030	mlx4_en_stop_port(dev, detach: 1);
2031	if (mlx4_en_start_port(dev))
2032	en_err(priv, "Failed restarting port %d\n", priv->port);
2033	}
2034	mutex_unlock(lock: &mdev->state_lock);
2035	rtnl_unlock();
2036	}
2037
2038	static void mlx4_en_clear_stats(struct net_device *dev)
2039	{
2040	struct mlx4_en_priv *priv = netdev_priv(dev);
2041	struct mlx4_en_dev *mdev = priv->mdev;
2042	struct mlx4_en_tx_ring **tx_ring;
2043	int i;
2044
2045	if (!mlx4_is_slave(dev: mdev->dev))
2046	if (mlx4_en_DUMP_ETH_STATS(mdev, port: priv->port, reset: 1))
2047	en_dbg(HW, priv, "Failed dumping statistics\n");
2048
2049	memset(&priv->pkstats, 0, sizeof(priv->pkstats));
2050	memset(&priv->port_stats, 0, sizeof(priv->port_stats));
2051	memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
2052	memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
2053	memset(&priv->rx_priority_flowstats, 0,
2054	sizeof(priv->rx_priority_flowstats));
2055	memset(&priv->tx_priority_flowstats, 0,
2056	sizeof(priv->tx_priority_flowstats));
2057	memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
2058
2059	tx_ring = priv->tx_ring[TX];
2060	for (i = 0; i < priv->tx_ring_num[TX]; i++) {
2061	tx_ring[i]->bytes = 0;
2062	tx_ring[i]->packets = 0;
2063	tx_ring[i]->tx_csum = 0;
2064	tx_ring[i]->tx_dropped = 0;
2065	tx_ring[i]->queue_stopped = 0;
2066	tx_ring[i]->wake_queue = 0;
2067	tx_ring[i]->tso_packets = 0;
2068	tx_ring[i]->xmit_more = 0;
2069	}
2070	for (i = 0; i < priv->rx_ring_num; i++) {
2071	priv->rx_ring[i]->bytes = 0;
2072	priv->rx_ring[i]->packets = 0;
2073	priv->rx_ring[i]->csum_ok = 0;
2074	priv->rx_ring[i]->csum_none = 0;
2075	priv->rx_ring[i]->csum_complete = 0;
2076	}
2077	}
2078
2079	static int mlx4_en_open(struct net_device *dev)
2080	{
2081	struct mlx4_en_priv *priv = netdev_priv(dev);
2082	struct mlx4_en_dev *mdev = priv->mdev;
2083	int err = 0;
2084
2085	mutex_lock(&mdev->state_lock);
2086
2087	if (!mdev->device_up) {
2088	en_err(priv, "Cannot open - device down/disabled\n");
2089	err = -EBUSY;
2090	goto out;
2091	}
2092
2093	/* Reset HW statistics and SW counters */
2094	mlx4_en_clear_stats(dev);
2095
2096	err = mlx4_en_start_port(dev);
2097	if (err) {
2098	en_err(priv, "Failed starting port:%d\n", priv->port);
2099	goto out;
2100	}
2101	mlx4_en_linkstate(priv);
2102	out:
2103	mutex_unlock(lock: &mdev->state_lock);
2104	return err;
2105	}
2106
2107
2108	static int mlx4_en_close(struct net_device *dev)
2109	{
2110	struct mlx4_en_priv *priv = netdev_priv(dev);
2111	struct mlx4_en_dev *mdev = priv->mdev;
2112
2113	en_dbg(IFDOWN, priv, "Close port called\n");
2114
2115	mutex_lock(&mdev->state_lock);
2116
2117	mlx4_en_stop_port(dev, detach: 0);
2118	netif_carrier_off(dev);
2119
2120	mutex_unlock(lock: &mdev->state_lock);
2121	return 0;
2122	}
2123
2124	static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2125	{
2126	int i, t;
2127
2128	#ifdef CONFIG_RFS_ACCEL
2129	priv->dev->rx_cpu_rmap = NULL;
2130	#endif
2131
2132	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2133	for (i = 0; i < priv->tx_ring_num[t]; i++) {
2134	if (priv->tx_ring[t] && priv->tx_ring[t][i])
2135	mlx4_en_destroy_tx_ring(priv,
2136	pring: &priv->tx_ring[t][i]);
2137	if (priv->tx_cq[t] && priv->tx_cq[t][i])
2138	mlx4_en_destroy_cq(priv, pcq: &priv->tx_cq[t][i]);
2139	}
2140	kfree(objp: priv->tx_ring[t]);
2141	kfree(objp: priv->tx_cq[t]);
2142	}
2143
2144	for (i = 0; i < priv->rx_ring_num; i++) {
2145	if (priv->rx_ring[i])
2146	mlx4_en_destroy_rx_ring(priv, pring: &priv->rx_ring[i],
2147	size: priv->prof->rx_ring_size, stride: priv->stride);
2148	if (priv->rx_cq[i])
2149	mlx4_en_destroy_cq(priv, pcq: &priv->rx_cq[i]);
2150	}
2151
2152	}
2153
2154	static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2155	{
2156	struct mlx4_en_port_profile *prof = priv->prof;
2157	int i, t;
2158	int node;
2159
2160	/* Create tx Rings */
2161	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2162	for (i = 0; i < priv->tx_ring_num[t]; i++) {
2163	node = cpu_to_node(cpu: i % num_online_cpus());
2164	if (mlx4_en_create_cq(priv, pcq: &priv->tx_cq[t][i],
2165	entries: prof->tx_ring_size, ring: i, mode: t, node))
2166	goto err;
2167
2168	if (mlx4_en_create_tx_ring(priv, pring: &priv->tx_ring[t][i],
2169	size: prof->tx_ring_size,
2170	TXBB_SIZE, node, queue_index: i))
2171	goto err;
2172	}
2173	}
2174
2175	/* Create rx Rings */
2176	for (i = 0; i < priv->rx_ring_num; i++) {
2177	node = cpu_to_node(cpu: i % num_online_cpus());
2178	if (mlx4_en_create_cq(priv, pcq: &priv->rx_cq[i],
2179	entries: prof->rx_ring_size, ring: i, mode: RX, node))
2180	goto err;
2181
2182	if (mlx4_en_create_rx_ring(priv, pring: &priv->rx_ring[i],
2183	size: prof->rx_ring_size, stride: priv->stride,
2184	node, queue_index: i))
2185	goto err;
2186
2187	}
2188
2189	#ifdef CONFIG_RFS_ACCEL
2190	priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(dev: priv->mdev->dev, port: priv->port);
2191	#endif
2192
2193	return 0;
2194
2195	err:
2196	en_err(priv, "Failed to allocate NIC resources\n");
2197	for (i = 0; i < priv->rx_ring_num; i++) {
2198	if (priv->rx_ring[i])
2199	mlx4_en_destroy_rx_ring(priv, pring: &priv->rx_ring[i],
2200	size: prof->rx_ring_size,
2201	stride: priv->stride);
2202	if (priv->rx_cq[i])
2203	mlx4_en_destroy_cq(priv, pcq: &priv->rx_cq[i]);
2204	}
2205	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2206	for (i = 0; i < priv->tx_ring_num[t]; i++) {
2207	if (priv->tx_ring[t][i])
2208	mlx4_en_destroy_tx_ring(priv,
2209	pring: &priv->tx_ring[t][i]);
2210	if (priv->tx_cq[t][i])
2211	mlx4_en_destroy_cq(priv, pcq: &priv->tx_cq[t][i]);
2212	}
2213	}
2214	return -ENOMEM;
2215	}
2216
2217
2218	static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2219	struct mlx4_en_priv *src,
2220	struct mlx4_en_port_profile *prof)
2221	{
2222	int t;
2223
2224	memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2225	sizeof(dst->hwtstamp_config));
2226	dst->num_tx_rings_p_up = prof->num_tx_rings_p_up;
2227	dst->rx_ring_num = prof->rx_ring_num;
2228	dst->flags = prof->flags;
2229	dst->mdev = src->mdev;
2230	dst->port = src->port;
2231	dst->dev = src->dev;
2232	dst->prof = prof;
2233	dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2234	DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2235
2236	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2237	dst->tx_ring_num[t] = prof->tx_ring_num[t];
2238	if (!dst->tx_ring_num[t])
2239	continue;
2240
2241	dst->tx_ring[t] = kcalloc(MAX_TX_RINGS,
2242	size: sizeof(struct mlx4_en_tx_ring *),
2243	GFP_KERNEL);
2244	if (!dst->tx_ring[t])
2245	goto err_free_tx;
2246
2247	dst->tx_cq[t] = kcalloc(MAX_TX_RINGS,
2248	size: sizeof(struct mlx4_en_cq *),
2249	GFP_KERNEL);
2250	if (!dst->tx_cq[t]) {
2251	kfree(objp: dst->tx_ring[t]);
2252	goto err_free_tx;
2253	}
2254	}
2255
2256	return 0;
2257
2258	err_free_tx:
2259	while (t--) {
2260	kfree(objp: dst->tx_ring[t]);
2261	kfree(objp: dst->tx_cq[t]);
2262	}
2263	return -ENOMEM;
2264	}
2265
2266	static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2267	struct mlx4_en_priv *src)
2268	{
2269	int t;
2270	memcpy(dst->rx_ring, src->rx_ring,
2271	sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2272	memcpy(dst->rx_cq, src->rx_cq,
2273	sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2274	memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2275	sizeof(dst->hwtstamp_config));
2276	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2277	dst->tx_ring_num[t] = src->tx_ring_num[t];
2278	dst->tx_ring[t] = src->tx_ring[t];
2279	dst->tx_cq[t] = src->tx_cq[t];
2280	}
2281	dst->num_tx_rings_p_up = src->num_tx_rings_p_up;
2282	dst->rx_ring_num = src->rx_ring_num;
2283	memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2284	}
2285
2286	int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2287	struct mlx4_en_priv *tmp,
2288	struct mlx4_en_port_profile *prof,
2289	bool carry_xdp_prog)
2290	{
2291	struct bpf_prog *xdp_prog;
2292	int i, t, ret;
2293
2294	ret = mlx4_en_copy_priv(dst: tmp, src: priv, prof);
2295	if (ret) {
2296	en_warn(priv, "%s: mlx4_en_copy_priv() failed, return\n",
2297	__func__);
2298	return ret;
2299	}
2300
2301	if (mlx4_en_alloc_resources(priv: tmp)) {
2302	en_warn(priv,
2303	"%s: Resource allocation failed, using previous configuration\n",
2304	__func__);
2305	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2306	kfree(objp: tmp->tx_ring[t]);
2307	kfree(objp: tmp->tx_cq[t]);
2308	}
2309	return -ENOMEM;
2310	}
2311
2312	/* All rx_rings has the same xdp_prog. Pick the first one. */
2313	xdp_prog = rcu_dereference_protected(
2314	priv->rx_ring[0]->xdp_prog,
2315	lockdep_is_held(&priv->mdev->state_lock));
2316
2317	if (xdp_prog && carry_xdp_prog) {
2318	bpf_prog_add(prog: xdp_prog, i: tmp->rx_ring_num);
2319	for (i = 0; i < tmp->rx_ring_num; i++)
2320	rcu_assign_pointer(tmp->rx_ring[i]->xdp_prog,
2321	xdp_prog);
2322	}
2323
2324	return 0;
2325	}
2326
2327	void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2328	struct mlx4_en_priv *tmp)
2329	{
2330	mlx4_en_free_resources(priv);
2331	mlx4_en_update_priv(dst: priv, src: tmp);
2332	}
2333
2334	void mlx4_en_destroy_netdev(struct net_device *dev)
2335	{
2336	struct mlx4_en_priv *priv = netdev_priv(dev);
2337	struct mlx4_en_dev *mdev = priv->mdev;
2338
2339	en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2340
2341	/* Unregister device - this will close the port if it was up */
2342	if (priv->registered)
2343	unregister_netdev(dev);
2344
2345	if (priv->allocated)
2346	mlx4_free_hwq_res(mdev: mdev->dev, wqres: &priv->res, MLX4_EN_PAGE_SIZE);
2347
2348	cancel_delayed_work(dwork: &priv->stats_task);
2349	cancel_delayed_work(dwork: &priv->service_task);
2350	/* flush any pending task for this netdev */
2351	flush_workqueue(mdev->workqueue);
2352
2353	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2354	mlx4_en_remove_timestamp(mdev);
2355
2356	/* Detach the netdev so tasks would not attempt to access it */
2357	mutex_lock(&mdev->state_lock);
2358	mdev->pndev[priv->port] = NULL;
2359	mdev->upper[priv->port] = NULL;
2360
2361	#ifdef CONFIG_RFS_ACCEL
2362	mlx4_en_cleanup_filters(priv);
2363	#endif
2364
2365	mlx4_en_free_resources(priv);
2366	mutex_unlock(lock: &mdev->state_lock);
2367
2368	free_netdev(dev);
2369	}
2370
2371	static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2372	{
2373	struct mlx4_en_priv *priv = netdev_priv(dev);
2374
2375	if (mtu > MLX4_EN_MAX_XDP_MTU) {
2376	en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2377	mtu, MLX4_EN_MAX_XDP_MTU);
2378	return false;
2379	}
2380
2381	return true;
2382	}
2383
2384	static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2385	{
2386	struct mlx4_en_priv *priv = netdev_priv(dev);
2387	struct mlx4_en_dev *mdev = priv->mdev;
2388	int err = 0;
2389
2390	en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2391	dev->mtu, new_mtu);
2392
2393	if (priv->tx_ring_num[TX_XDP] &&
2394	!mlx4_en_check_xdp_mtu(dev, mtu: new_mtu))
2395	return -EOPNOTSUPP;
2396
2397	dev->mtu = new_mtu;
2398
2399	if (netif_running(dev)) {
2400	mutex_lock(&mdev->state_lock);
2401	if (!mdev->device_up) {
2402	/* NIC is probably restarting - let restart task reset
2403	* the port */
2404	en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2405	} else {
2406	mlx4_en_stop_port(dev, detach: 1);
2407	err = mlx4_en_start_port(dev);
2408	if (err) {
2409	en_err(priv, "Failed restarting port:%d\n",
2410	priv->port);
2411	if (!test_and_set_bit(nr: MLX4_EN_STATE_FLAG_RESTARTING,
2412	addr: &priv->state))
2413	queue_work(wq: mdev->workqueue, work: &priv->restart_task);
2414	}
2415	}
2416	mutex_unlock(lock: &mdev->state_lock);
2417	}
2418	return 0;
2419	}
2420
2421	static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2422	{
2423	struct mlx4_en_priv *priv = netdev_priv(dev);
2424	struct mlx4_en_dev *mdev = priv->mdev;
2425	struct hwtstamp_config config;
2426
2427	if (copy_from_user(to: &config, from: ifr->ifr_data, n: sizeof(config)))
2428	return -EFAULT;
2429
2430	/* device doesn't support time stamping */
2431	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2432	return -EINVAL;
2433
2434	/* TX HW timestamp */
2435	switch (config.tx_type) {
2436	case HWTSTAMP_TX_OFF:
2437	case HWTSTAMP_TX_ON:
2438	break;
2439	default:
2440	return -ERANGE;
2441	}
2442
2443	/* RX HW timestamp */
2444	switch (config.rx_filter) {
2445	case HWTSTAMP_FILTER_NONE:
2446	break;
2447	case HWTSTAMP_FILTER_ALL:
2448	case HWTSTAMP_FILTER_SOME:
2449	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2450	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2451	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2452	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2453	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2454	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2455	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2456	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2457	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2458	case HWTSTAMP_FILTER_PTP_V2_EVENT:
2459	case HWTSTAMP_FILTER_PTP_V2_SYNC:
2460	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2461	case HWTSTAMP_FILTER_NTP_ALL:
2462	config.rx_filter = HWTSTAMP_FILTER_ALL;
2463	break;
2464	default:
2465	return -ERANGE;
2466	}
2467
2468	if (mlx4_en_reset_config(dev, ts_config: config, new_features: dev->features)) {
2469	config.tx_type = HWTSTAMP_TX_OFF;
2470	config.rx_filter = HWTSTAMP_FILTER_NONE;
2471	}
2472
2473	return copy_to_user(to: ifr->ifr_data, from: &config,
2474	n: sizeof(config)) ? -EFAULT : 0;
2475	}
2476
2477	static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2478	{
2479	struct mlx4_en_priv *priv = netdev_priv(dev);
2480
2481	return copy_to_user(to: ifr->ifr_data, from: &priv->hwtstamp_config,
2482	n: sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2483	}
2484
2485	static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2486	{
2487	switch (cmd) {
2488	case SIOCSHWTSTAMP:
2489	return mlx4_en_hwtstamp_set(dev, ifr);
2490	case SIOCGHWTSTAMP:
2491	return mlx4_en_hwtstamp_get(dev, ifr);
2492	default:
2493	return -EOPNOTSUPP;
2494	}
2495	}
2496
2497	static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2498	netdev_features_t features)
2499	{
2500	struct mlx4_en_priv *en_priv = netdev_priv(dev: netdev);
2501	struct mlx4_en_dev *mdev = en_priv->mdev;
2502
2503	/* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2504	* enable/disable make sure S-TAG flag is always in same state as
2505	* C-TAG.
2506	*/
2507	if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2508	!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2509	features |= NETIF_F_HW_VLAN_STAG_RX;
2510	else
2511	features &= ~NETIF_F_HW_VLAN_STAG_RX;
2512
2513	return features;
2514	}
2515
2516	static int mlx4_en_set_features(struct net_device *netdev,
2517	netdev_features_t features)
2518	{
2519	struct mlx4_en_priv *priv = netdev_priv(dev: netdev);
2520	bool reset = false;
2521	int ret = 0;
2522
2523	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2524	en_info(priv, "Turn %s RX-FCS\n",
2525	(features & NETIF_F_RXFCS) ? "ON" : "OFF");
2526	reset = true;
2527	}
2528
2529	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2530	u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2531
2532	en_info(priv, "Turn %s RX-ALL\n",
2533	ignore_fcs_value ? "ON" : "OFF");
2534	ret = mlx4_SET_PORT_fcs_check(dev: priv->mdev->dev,
2535	port: priv->port, ignore_fcs_value);
2536	if (ret)
2537	return ret;
2538	}
2539
2540	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2541	en_info(priv, "Turn %s RX vlan strip offload\n",
2542	(features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2543	reset = true;
2544	}
2545
2546	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2547	en_info(priv, "Turn %s TX vlan strip offload\n",
2548	(features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2549
2550	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2551	en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2552	(features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2553
2554	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2555	en_info(priv, "Turn %s loopback\n",
2556	(features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2557	mlx4_en_update_loopback_state(dev: netdev, features);
2558	}
2559
2560	if (reset) {
2561	ret = mlx4_en_reset_config(dev: netdev, ts_config: priv->hwtstamp_config,
2562	new_features: features);
2563	if (ret)
2564	return ret;
2565	}
2566
2567	return 0;
2568	}
2569
2570	static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2571	{
2572	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2573	struct mlx4_en_dev *mdev = en_priv->mdev;
2574
2575	return mlx4_set_vf_mac(dev: mdev->dev, port: en_priv->port, vf: queue, mac);
2576	}
2577
2578	static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
2579	__be16 vlan_proto)
2580	{
2581	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2582	struct mlx4_en_dev *mdev = en_priv->mdev;
2583
2584	return mlx4_set_vf_vlan(dev: mdev->dev, port: en_priv->port, vf, vlan, qos,
2585	proto: vlan_proto);
2586	}
2587
2588	static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2589	int max_tx_rate)
2590	{
2591	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2592	struct mlx4_en_dev *mdev = en_priv->mdev;
2593
2594	return mlx4_set_vf_rate(dev: mdev->dev, port: en_priv->port, vf, min_tx_rate,
2595	max_tx_rate);
2596	}
2597
2598	static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2599	{
2600	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2601	struct mlx4_en_dev *mdev = en_priv->mdev;
2602
2603	return mlx4_set_vf_spoofchk(dev: mdev->dev, port: en_priv->port, vf, setting);
2604	}
2605
2606	static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2607	{
2608	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2609	struct mlx4_en_dev *mdev = en_priv->mdev;
2610
2611	return mlx4_get_vf_config(dev: mdev->dev, port: en_priv->port, vf, ivf);
2612	}
2613
2614	static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2615	{
2616	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2617	struct mlx4_en_dev *mdev = en_priv->mdev;
2618
2619	return mlx4_set_vf_link_state(dev: mdev->dev, port: en_priv->port, vf, link_state);
2620	}
2621
2622	static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2623	struct ifla_vf_stats *vf_stats)
2624	{
2625	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2626	struct mlx4_en_dev *mdev = en_priv->mdev;
2627
2628	return mlx4_get_vf_stats(dev: mdev->dev, port: en_priv->port, vf_idx: vf, vf_stats);
2629	}
2630
2631	#define PORT_ID_BYTE_LEN 8
2632	static int mlx4_en_get_phys_port_id(struct net_device *dev,
2633	struct netdev_phys_item_id *ppid)
2634	{
2635	struct mlx4_en_priv *priv = netdev_priv(dev);
2636	struct mlx4_dev *mdev = priv->mdev->dev;
2637	int i;
2638	u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2639
2640	if (!phys_port_id)
2641	return -EOPNOTSUPP;
2642
2643	ppid->id_len = sizeof(phys_port_id);
2644	for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2645	ppid->id[i] = phys_port_id & 0xff;
2646	phys_port_id >>= 8;
2647	}
2648	return 0;
2649	}
2650
2651	static int mlx4_udp_tunnel_sync(struct net_device *dev, unsigned int table)
2652	{
2653	struct mlx4_en_priv *priv = netdev_priv(dev);
2654	struct udp_tunnel_info ti;
2655	int ret;
2656
2657	udp_tunnel_nic_get_port(dev, table, idx: 0, ti: &ti);
2658	priv->vxlan_port = ti.port;
2659
2660	ret = mlx4_config_vxlan_port(dev: priv->mdev->dev, udp_port: priv->vxlan_port);
2661	if (ret)
2662	return ret;
2663
2664	return mlx4_SET_PORT_VXLAN(dev: priv->mdev->dev, port: priv->port,
2665	steering: VXLAN_STEER_BY_OUTER_MAC,
2666	enable: !!priv->vxlan_port);
2667	}
2668
2669	static const struct udp_tunnel_nic_info mlx4_udp_tunnels = {
2670	.sync_table = mlx4_udp_tunnel_sync,
2671	.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
2672	UDP_TUNNEL_NIC_INFO_IPV4_ONLY,
2673	.tables = {
2674	{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
2675	},
2676	};
2677
2678	static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2679	struct net_device *dev,
2680	netdev_features_t features)
2681	{
2682	features = vlan_features_check(skb, features);
2683	features = vxlan_features_check(skb, features);
2684
2685	/* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2686	* support inner IPv6 checksums and segmentation so we need to
2687	* strip that feature if this is an IPv6 encapsulated frame.
2688	*/
2689	if (skb->encapsulation &&
2690	(skb->ip_summed == CHECKSUM_PARTIAL)) {
2691	struct mlx4_en_priv *priv = netdev_priv(dev);
2692
2693	if (!priv->vxlan_port ||
2694	(ip_hdr(skb)->version != 4) ||
2695	(udp_hdr(skb)->dest != priv->vxlan_port))
2696	features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2697	}
2698
2699	return features;
2700	}
2701
2702	static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2703	{
2704	struct mlx4_en_priv *priv = netdev_priv(dev);
2705	struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2706	struct mlx4_update_qp_params params;
2707	int err;
2708
2709	if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2710	return -EOPNOTSUPP;
2711
2712	/* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2713	if (maxrate >> 12) {
2714	params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2715	params.rate_val = maxrate / 1000;
2716	} else if (maxrate) {
2717	params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2718	params.rate_val = maxrate;
2719	} else { /* zero serves to revoke the QP rate-limitation */
2720	params.rate_unit = 0;
2721	params.rate_val = 0;
2722	}
2723
2724	err = mlx4_update_qp(dev: priv->mdev->dev, qpn: tx_ring->qpn, attr: MLX4_UPDATE_QP_RATE_LIMIT,
2725	params: &params);
2726	return err;
2727	}
2728
2729	static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2730	{
2731	struct mlx4_en_priv *priv = netdev_priv(dev);
2732	struct mlx4_en_dev *mdev = priv->mdev;
2733	struct mlx4_en_port_profile new_prof;
2734	struct bpf_prog *old_prog;
2735	struct mlx4_en_priv *tmp;
2736	int tx_changed = 0;
2737	int xdp_ring_num;
2738	int port_up = 0;
2739	int err;
2740	int i;
2741
2742	xdp_ring_num = prog ? priv->rx_ring_num : 0;
2743
2744	/* No need to reconfigure buffers when simply swapping the
2745	* program for a new one.
2746	*/
2747	if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2748	if (prog)
2749	bpf_prog_add(prog, i: priv->rx_ring_num - 1);
2750
2751	mutex_lock(&mdev->state_lock);
2752	for (i = 0; i < priv->rx_ring_num; i++) {
2753	old_prog = rcu_dereference_protected(
2754	priv->rx_ring[i]->xdp_prog,
2755	lockdep_is_held(&mdev->state_lock));
2756	rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2757	if (old_prog)
2758	bpf_prog_put(prog: old_prog);
2759	}
2760	mutex_unlock(lock: &mdev->state_lock);
2761	return 0;
2762	}
2763
2764	if (!mlx4_en_check_xdp_mtu(dev, mtu: dev->mtu))
2765	return -EOPNOTSUPP;
2766
2767	tmp = kzalloc(size: sizeof(*tmp), GFP_KERNEL);
2768	if (!tmp)
2769	return -ENOMEM;
2770
2771	if (prog)
2772	bpf_prog_add(prog, i: priv->rx_ring_num - 1);
2773
2774	mutex_lock(&mdev->state_lock);
2775	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2776	new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2777
2778	if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2779	tx_changed = 1;
2780	new_prof.tx_ring_num[TX] =
2781	MAX_TX_RINGS - ALIGN(xdp_ring_num, priv->prof->num_up);
2782	en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2783	}
2784
2785	err = mlx4_en_try_alloc_resources(priv, tmp, prof: &new_prof, carry_xdp_prog: false);
2786	if (err) {
2787	if (prog)
2788	bpf_prog_sub(prog, i: priv->rx_ring_num - 1);
2789	goto unlock_out;
2790	}
2791
2792	if (priv->port_up) {
2793	port_up = 1;
2794	mlx4_en_stop_port(dev, detach: 1);
2795	}
2796
2797	mlx4_en_safe_replace_resources(priv, tmp);
2798	if (tx_changed)
2799	netif_set_real_num_tx_queues(dev, txq: priv->tx_ring_num[TX]);
2800
2801	for (i = 0; i < priv->rx_ring_num; i++) {
2802	old_prog = rcu_dereference_protected(
2803	priv->rx_ring[i]->xdp_prog,
2804	lockdep_is_held(&mdev->state_lock));
2805	rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2806	if (old_prog)
2807	bpf_prog_put(prog: old_prog);
2808	}
2809
2810	if (port_up) {
2811	err = mlx4_en_start_port(dev);
2812	if (err) {
2813	en_err(priv, "Failed starting port %d for XDP change\n",
2814	priv->port);
2815	if (!test_and_set_bit(nr: MLX4_EN_STATE_FLAG_RESTARTING, addr: &priv->state))
2816	queue_work(wq: mdev->workqueue, work: &priv->restart_task);
2817	}
2818	}
2819
2820	unlock_out:
2821	mutex_unlock(lock: &mdev->state_lock);
2822	kfree(objp: tmp);
2823	return err;
2824	}
2825
2826	static int mlx4_xdp(struct net_device *dev, struct netdev_bpf *xdp)
2827	{
2828	switch (xdp->command) {
2829	case XDP_SETUP_PROG:
2830	return mlx4_xdp_set(dev, prog: xdp->prog);
2831	default:
2832	return -EINVAL;
2833	}
2834	}
2835
2836	static const struct net_device_ops mlx4_netdev_ops = {
2837	.ndo_open = mlx4_en_open,
2838	.ndo_stop = mlx4_en_close,
2839	.ndo_start_xmit = mlx4_en_xmit,
2840	.ndo_select_queue = mlx4_en_select_queue,
2841	.ndo_get_stats64 = mlx4_en_get_stats64,
2842	.ndo_set_rx_mode = mlx4_en_set_rx_mode,
2843	.ndo_set_mac_address = mlx4_en_set_mac,
2844	.ndo_validate_addr = eth_validate_addr,
2845	.ndo_change_mtu = mlx4_en_change_mtu,
2846	.ndo_eth_ioctl = mlx4_en_ioctl,
2847	.ndo_tx_timeout = mlx4_en_tx_timeout,
2848	.ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2849	.ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2850	.ndo_set_features = mlx4_en_set_features,
2851	.ndo_fix_features = mlx4_en_fix_features,
2852	.ndo_setup_tc = __mlx4_en_setup_tc,
2853	#ifdef CONFIG_RFS_ACCEL
2854	.ndo_rx_flow_steer = mlx4_en_filter_rfs,
2855	#endif
2856	.ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2857	.ndo_features_check = mlx4_en_features_check,
2858	.ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
2859	.ndo_bpf = mlx4_xdp,
2860	};
2861
2862	static const struct net_device_ops mlx4_netdev_ops_master = {
2863	.ndo_open = mlx4_en_open,
2864	.ndo_stop = mlx4_en_close,
2865	.ndo_start_xmit = mlx4_en_xmit,
2866	.ndo_select_queue = mlx4_en_select_queue,
2867	.ndo_get_stats64 = mlx4_en_get_stats64,
2868	.ndo_set_rx_mode = mlx4_en_set_rx_mode,
2869	.ndo_set_mac_address = mlx4_en_set_mac,
2870	.ndo_validate_addr = eth_validate_addr,
2871	.ndo_change_mtu = mlx4_en_change_mtu,
2872	.ndo_tx_timeout = mlx4_en_tx_timeout,
2873	.ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2874	.ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2875	.ndo_set_vf_mac = mlx4_en_set_vf_mac,
2876	.ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2877	.ndo_set_vf_rate = mlx4_en_set_vf_rate,
2878	.ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2879	.ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2880	.ndo_get_vf_stats = mlx4_en_get_vf_stats,
2881	.ndo_get_vf_config = mlx4_en_get_vf_config,
2882	.ndo_set_features = mlx4_en_set_features,
2883	.ndo_fix_features = mlx4_en_fix_features,
2884	.ndo_setup_tc = __mlx4_en_setup_tc,
2885	#ifdef CONFIG_RFS_ACCEL
2886	.ndo_rx_flow_steer = mlx4_en_filter_rfs,
2887	#endif
2888	.ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2889	.ndo_features_check = mlx4_en_features_check,
2890	.ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
2891	.ndo_bpf = mlx4_xdp,
2892	};
2893
2894	static const struct xdp_metadata_ops mlx4_xdp_metadata_ops = {
2895	.xmo_rx_timestamp = mlx4_en_xdp_rx_timestamp,
2896	.xmo_rx_hash = mlx4_en_xdp_rx_hash,
2897	};
2898
2899	int mlx4_en_netdev_event(struct notifier_block *this,
2900	unsigned long event, void *ptr)
2901	{
2902	struct net_device *ndev = netdev_notifier_info_to_dev(info: ptr);
2903	u8 port = 0;
2904	struct mlx4_en_dev *mdev;
2905	struct mlx4_dev *dev;
2906	int i, num_eth_ports = 0;
2907	bool do_bond = true;
2908	u8 v2p_port1 = 0;
2909	u8 v2p_port2 = 0;
2910
2911	if (!net_eq(net1: dev_net(dev: ndev), net2: &init_net))
2912	return NOTIFY_DONE;
2913
2914	mdev = container_of(this, struct mlx4_en_dev, netdev_nb);
2915	dev = mdev->dev;
2916
2917	/* Go into this mode only when two network devices set on two ports
2918	* of the same mlx4 device are slaves of the same bonding master
2919	*/
2920	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2921	++num_eth_ports;
2922	if (!port && (mdev->pndev[i] == ndev))
2923	port = i;
2924	mdev->upper[i] = mdev->pndev[i] ?
2925	netdev_master_upper_dev_get(dev: mdev->pndev[i]) : NULL;
2926	/* condition not met: network device is a slave */
2927	if (!mdev->upper[i])
2928	do_bond = false;
2929	if (num_eth_ports < 2)
2930	continue;
2931	/* condition not met: same master */
2932	if (mdev->upper[i] != mdev->upper[i-1])
2933	do_bond = false;
2934	}
2935	/* condition not met: 2 salves */
2936	do_bond = (num_eth_ports == 2) ? do_bond : false;
2937
2938	/* handle only events that come with enough info */
2939	if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2940	return NOTIFY_DONE;
2941
2942	if (do_bond) {
2943	struct netdev_notifier_bonding_info *notifier_info = ptr;
2944	struct netdev_bonding_info *bonding_info =
2945	&notifier_info->bonding_info;
2946
2947	/* required mode 1, 2 or 4 */
2948	if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2949	(bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2950	(bonding_info->master.bond_mode != BOND_MODE_8023AD))
2951	do_bond = false;
2952
2953	/* require exactly 2 slaves */
2954	if (bonding_info->master.num_slaves != 2)
2955	do_bond = false;
2956
2957	/* calc v2p */
2958	if (do_bond) {
2959	if (bonding_info->master.bond_mode ==
2960	BOND_MODE_ACTIVEBACKUP) {
2961	/* in active-backup mode virtual ports are
2962	* mapped to the physical port of the active
2963	* slave */
2964	if (bonding_info->slave.state ==
2965	BOND_STATE_BACKUP) {
2966	if (port == 1) {
2967	v2p_port1 = 2;
2968	v2p_port2 = 2;
2969	} else {
2970	v2p_port1 = 1;
2971	v2p_port2 = 1;
2972	}
2973	} else { /* BOND_STATE_ACTIVE */
2974	if (port == 1) {
2975	v2p_port1 = 1;
2976	v2p_port2 = 1;
2977	} else {
2978	v2p_port1 = 2;
2979	v2p_port2 = 2;
2980	}
2981	}
2982	} else { /* Active-Active */
2983	/* in active-active mode a virtual port is
2984	* mapped to the native physical port if and only
2985	* if the physical port is up */
2986	__s8 link = bonding_info->slave.link;
2987
2988	if (port == 1)
2989	v2p_port2 = 2;
2990	else
2991	v2p_port1 = 1;
2992	if ((link == BOND_LINK_UP) ||
2993	(link == BOND_LINK_FAIL)) {
2994	if (port == 1)
2995	v2p_port1 = 1;
2996	else
2997	v2p_port2 = 2;
2998	} else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2999	if (port == 1)
3000	v2p_port1 = 2;
3001	else
3002	v2p_port2 = 1;
3003	}
3004	}
3005	}
3006	}
3007
3008	mlx4_queue_bond_work(dev, is_bonded: do_bond, v2p_p1: v2p_port1, v2p_p2: v2p_port2);
3009
3010	return NOTIFY_DONE;
3011	}
3012
3013	void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3014	struct mlx4_en_stats_bitmap *stats_bitmap,
3015	u8 rx_ppp, u8 rx_pause,
3016	u8 tx_ppp, u8 tx_pause)
3017	{
3018	int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3019
3020	if (!mlx4_is_slave(dev) &&
3021	(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3022	mutex_lock(&stats_bitmap->mutex);
3023	bitmap_clear(map: stats_bitmap->bitmap, start: last_i, NUM_FLOW_STATS);
3024
3025	if (rx_ppp)
3026	bitmap_set(map: stats_bitmap->bitmap, start: last_i,
3027	NUM_FLOW_PRIORITY_STATS_RX);
3028	last_i += NUM_FLOW_PRIORITY_STATS_RX;
3029
3030	if (rx_pause && !(rx_ppp))
3031	bitmap_set(map: stats_bitmap->bitmap, start: last_i,
3032	NUM_FLOW_STATS_RX);
3033	last_i += NUM_FLOW_STATS_RX;
3034
3035	if (tx_ppp)
3036	bitmap_set(map: stats_bitmap->bitmap, start: last_i,
3037	NUM_FLOW_PRIORITY_STATS_TX);
3038	last_i += NUM_FLOW_PRIORITY_STATS_TX;
3039
3040	if (tx_pause && !(tx_ppp))
3041	bitmap_set(map: stats_bitmap->bitmap, start: last_i,
3042	NUM_FLOW_STATS_TX);
3043	last_i += NUM_FLOW_STATS_TX;
3044
3045	mutex_unlock(lock: &stats_bitmap->mutex);
3046	}
3047	}
3048
3049	void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3050	struct mlx4_en_stats_bitmap *stats_bitmap,
3051	u8 rx_ppp, u8 rx_pause,
3052	u8 tx_ppp, u8 tx_pause)
3053	{
3054	int last_i = 0;
3055
3056	mutex_init(&stats_bitmap->mutex);
3057	bitmap_zero(dst: stats_bitmap->bitmap, NUM_ALL_STATS);
3058
3059	if (mlx4_is_slave(dev)) {
3060	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3061	MLX4_FIND_NETDEV_STAT(rx_packets), nbits: 1);
3062	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3063	MLX4_FIND_NETDEV_STAT(tx_packets), nbits: 1);
3064	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3065	MLX4_FIND_NETDEV_STAT(rx_bytes), nbits: 1);
3066	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3067	MLX4_FIND_NETDEV_STAT(tx_bytes), nbits: 1);
3068	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3069	MLX4_FIND_NETDEV_STAT(rx_dropped), nbits: 1);
3070	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3071	MLX4_FIND_NETDEV_STAT(tx_dropped), nbits: 1);
3072	} else {
3073	bitmap_set(map: stats_bitmap->bitmap, start: last_i, NUM_MAIN_STATS);
3074	}
3075	last_i += NUM_MAIN_STATS;
3076
3077	bitmap_set(map: stats_bitmap->bitmap, start: last_i, NUM_PORT_STATS);
3078	last_i += NUM_PORT_STATS;
3079
3080	if (mlx4_is_master(dev))
3081	bitmap_set(map: stats_bitmap->bitmap, start: last_i,
3082	NUM_PF_STATS);
3083	last_i += NUM_PF_STATS;
3084
3085	mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3086	rx_ppp, rx_pause,
3087	tx_ppp, tx_pause);
3088	last_i += NUM_FLOW_STATS;
3089
3090	if (!mlx4_is_slave(dev))
3091	bitmap_set(map: stats_bitmap->bitmap, start: last_i, NUM_PKT_STATS);
3092	last_i += NUM_PKT_STATS;
3093
3094	bitmap_set(map: stats_bitmap->bitmap, start: last_i, NUM_XDP_STATS);
3095	last_i += NUM_XDP_STATS;
3096
3097	if (!mlx4_is_slave(dev))
3098	bitmap_set(map: stats_bitmap->bitmap, start: last_i, NUM_PHY_STATS);
3099	last_i += NUM_PHY_STATS;
3100	}
3101
3102	int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3103	struct mlx4_en_port_profile *prof)
3104	{
3105	struct net_device *dev;
3106	struct mlx4_en_priv *priv;
3107	int i, t;
3108	int err;
3109
3110	dev = alloc_etherdev_mqs(sizeof_priv: sizeof(struct mlx4_en_priv),
3111	MAX_TX_RINGS, MAX_RX_RINGS);
3112	if (dev == NULL)
3113	return -ENOMEM;
3114
3115	netif_set_real_num_tx_queues(dev, txq: prof->tx_ring_num[TX]);
3116	netif_set_real_num_rx_queues(dev, rxq: prof->rx_ring_num);
3117
3118	SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3119	dev->dev_port = port - 1;
3120
3121	/*
3122	* Initialize driver private data
3123	*/
3124
3125	priv = netdev_priv(dev);
3126	memset(priv, 0, sizeof(struct mlx4_en_priv));
3127	priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3128	spin_lock_init(&priv->stats_lock);
3129	INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3130	INIT_WORK(&priv->restart_task, mlx4_en_restart);
3131	INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate_work);
3132	INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3133	INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3134	#ifdef CONFIG_RFS_ACCEL
3135	INIT_LIST_HEAD(list: &priv->filters);
3136	spin_lock_init(&priv->filters_lock);
3137	#endif
3138
3139	priv->dev = dev;
3140	priv->mdev = mdev;
3141	priv->ddev = &mdev->pdev->dev;
3142	priv->prof = prof;
3143	priv->port = port;
3144	priv->port_up = false;
3145	priv->flags = prof->flags;
3146	priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3147	priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3148	MLX4_WQE_CTRL_SOLICITED);
3149	priv->num_tx_rings_p_up = mdev->profile.max_num_tx_rings_p_up;
3150	priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3151	netdev_rss_key_fill(buffer: priv->rss_key, len: sizeof(priv->rss_key));
3152
3153	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3154	priv->tx_ring_num[t] = prof->tx_ring_num[t];
3155	if (!priv->tx_ring_num[t])
3156	continue;
3157
3158	priv->tx_ring[t] = kcalloc(MAX_TX_RINGS,
3159	size: sizeof(struct mlx4_en_tx_ring *),
3160	GFP_KERNEL);
3161	if (!priv->tx_ring[t]) {
3162	err = -ENOMEM;
3163	goto out;
3164	}
3165	priv->tx_cq[t] = kcalloc(MAX_TX_RINGS,
3166	size: sizeof(struct mlx4_en_cq *),
3167	GFP_KERNEL);
3168	if (!priv->tx_cq[t]) {
3169	err = -ENOMEM;
3170	goto out;
3171	}
3172	}
3173	priv->rx_ring_num = prof->rx_ring_num;
3174	priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3175	priv->cqe_size = mdev->dev->caps.cqe_size;
3176	priv->mac_index = -1;
3177	priv->msg_enable = MLX4_EN_MSG_LEVEL;
3178	#ifdef CONFIG_MLX4_EN_DCB
3179	if (!mlx4_is_slave(dev: priv->mdev->dev)) {
3180	u8 prio;
3181
3182	for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) {
3183	priv->ets.prio_tc[prio] = prio;
3184	priv->ets.tc_tsa[prio] = IEEE_8021QAZ_TSA_VENDOR;
3185	}
3186
3187	priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3188	DCB_CAP_DCBX_VER_IEEE;
3189	priv->flags |= MLX4_EN_DCB_ENABLED;
3190	priv->cee_config.pfc_state = false;
3191
3192	for (i = 0; i < MLX4_EN_NUM_UP_HIGH; i++)
3193	priv->cee_config.dcb_pfc[i] = pfc_disabled;
3194
3195	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3196	dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3197	} else {
3198	en_info(priv, "enabling only PFC DCB ops\n");
3199	dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3200	}
3201	}
3202	#endif
3203
3204	for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3205	INIT_HLIST_HEAD(&priv->mac_hash[i]);
3206
3207	/* Query for default mac and max mtu */
3208	priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3209
3210	if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3211	MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3212	priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3213
3214	/* Set default MAC */
3215	dev->addr_len = ETH_ALEN;
3216	mlx4_en_u64_to_mac(dev, src_mac: mdev->dev->caps.def_mac[priv->port]);
3217	if (!is_valid_ether_addr(addr: dev->dev_addr)) {
3218	en_err(priv, "Port: %d, invalid mac burned: %pM, quitting\n",
3219	priv->port, dev->dev_addr);
3220	err = -EINVAL;
3221	goto out;
3222	} else if (mlx4_is_slave(dev: priv->mdev->dev) &&
3223	(priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3224	/* Random MAC was assigned in mlx4_slave_cap
3225	* in mlx4_core module
3226	*/
3227	dev->addr_assign_type |= NET_ADDR_RANDOM;
3228	en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3229	}
3230
3231	memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3232
3233	priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3234	DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3235	err = mlx4_en_alloc_resources(priv);
3236	if (err)
3237	goto out;
3238
3239	/* Initialize time stamping config */
3240	priv->hwtstamp_config.flags = 0;
3241	priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3242	priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3243
3244	/* Allocate page for receive rings */
3245	err = mlx4_alloc_hwq_res(dev: mdev->dev, wqres: &priv->res,
3246	MLX4_EN_PAGE_SIZE);
3247	if (err) {
3248	en_err(priv, "Failed to allocate page for rx qps\n");
3249	goto out;
3250	}
3251	priv->allocated = 1;
3252
3253	/*
3254	* Initialize netdev entry points
3255	*/
3256	if (mlx4_is_master(dev: priv->mdev->dev))
3257	dev->netdev_ops = &mlx4_netdev_ops_master;
3258	else
3259	dev->netdev_ops = &mlx4_netdev_ops;
3260	dev->xdp_metadata_ops = &mlx4_xdp_metadata_ops;
3261	dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3262	netif_set_real_num_tx_queues(dev, txq: priv->tx_ring_num[TX]);
3263	netif_set_real_num_rx_queues(dev, rxq: priv->rx_ring_num);
3264
3265	dev->ethtool_ops = &mlx4_en_ethtool_ops;
3266
3267	/*
3268	* Set driver features
3269	*/
3270	dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3271	if (mdev->LSO_support)
3272	dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3273
3274	if (mdev->dev->caps.tunnel_offload_mode ==
3275	MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3276	dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3277	NETIF_F_GSO_UDP_TUNNEL_CSUM |
3278	NETIF_F_GSO_PARTIAL;
3279	dev->features |= NETIF_F_GSO_UDP_TUNNEL |
3280	NETIF_F_GSO_UDP_TUNNEL_CSUM |
3281	NETIF_F_GSO_PARTIAL;
3282	dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3283	dev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3284	NETIF_F_RXCSUM |
3285	NETIF_F_TSO | NETIF_F_TSO6 |
3286	NETIF_F_GSO_UDP_TUNNEL |
3287	NETIF_F_GSO_UDP_TUNNEL_CSUM |
3288	NETIF_F_GSO_PARTIAL;
3289
3290	dev->udp_tunnel_nic_info = &mlx4_udp_tunnels;
3291	}
3292
3293	dev->vlan_features = dev->hw_features;
3294
3295	dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3296	dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3297	NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3298	NETIF_F_HW_VLAN_CTAG_FILTER;
3299	dev->hw_features |= NETIF_F_LOOPBACK |
3300	NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3301
3302	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3303	dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3304	NETIF_F_HW_VLAN_STAG_FILTER;
3305	dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3306	}
3307
3308	if (mlx4_is_slave(dev: mdev->dev)) {
3309	bool vlan_offload_disabled;
3310	int phv;
3311
3312	err = get_phv_bit(dev: mdev->dev, port, phv: &phv);
3313	if (!err && phv) {
3314	dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3315	priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3316	}
3317	err = mlx4_get_is_vlan_offload_disabled(dev: mdev->dev, port,
3318	vlan_offload_disabled: &vlan_offload_disabled);
3319	if (!err && vlan_offload_disabled) {
3320	dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3321	NETIF_F_HW_VLAN_CTAG_RX |
3322	NETIF_F_HW_VLAN_STAG_TX |
3323	NETIF_F_HW_VLAN_STAG_RX);
3324	dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3325	NETIF_F_HW_VLAN_CTAG_RX |
3326	NETIF_F_HW_VLAN_STAG_TX |
3327	NETIF_F_HW_VLAN_STAG_RX);
3328	}
3329	} else {
3330	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3331	!(mdev->dev->caps.flags2 &
3332	MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3333	dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3334	}
3335
3336	if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3337	dev->hw_features |= NETIF_F_RXFCS;
3338
3339	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3340	dev->hw_features |= NETIF_F_RXALL;
3341
3342	if (mdev->dev->caps.steering_mode ==
3343	MLX4_STEERING_MODE_DEVICE_MANAGED &&
3344	mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3345	dev->hw_features |= NETIF_F_NTUPLE;
3346
3347	if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3348	dev->priv_flags |= IFF_UNICAST_FLT;
3349
3350	/* Setting a default hash function value */
3351	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3352	priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3353	} else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3354	priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3355	} else {
3356	en_warn(priv,
3357	"No RSS hash capabilities exposed, using Toeplitz\n");
3358	priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3359	}
3360
3361	dev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT;
3362
3363	/* MTU range: 68 - hw-specific max */
3364	dev->min_mtu = ETH_MIN_MTU;
3365	dev->max_mtu = priv->max_mtu;
3366
3367	/* supports LSOv2 packets. */
3368	netif_set_tso_max_size(dev, GSO_MAX_SIZE);
3369
3370	mdev->pndev[port] = dev;
3371	mdev->upper[port] = NULL;
3372
3373	netif_carrier_off(dev);
3374	mlx4_en_set_default_moderation(priv);
3375
3376	en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3377	en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3378
3379	mlx4_en_update_loopback_state(dev: priv->dev, features: priv->dev->features);
3380
3381	/* Configure port */
3382	mlx4_en_calc_rx_buf(dev);
3383	err = mlx4_SET_PORT_general(dev: mdev->dev, port: priv->port,
3384	mtu: priv->rx_skb_size + ETH_FCS_LEN,
3385	pptx: prof->tx_pause, pfctx: prof->tx_ppp,
3386	pprx: prof->rx_pause, pfcrx: prof->rx_ppp);
3387	if (err) {
3388	en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3389	priv->port, err);
3390	goto out;
3391	}
3392
3393	if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3394	err = mlx4_SET_PORT_VXLAN(dev: mdev->dev, port: priv->port, steering: VXLAN_STEER_BY_OUTER_MAC, enable: 1);
3395	if (err) {
3396	en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3397	err);
3398	goto out;
3399	}
3400	}
3401
3402	/* Init port */
3403	en_warn(priv, "Initializing port\n");
3404	err = mlx4_INIT_PORT(dev: mdev->dev, port: priv->port);
3405	if (err) {
3406	en_err(priv, "Failed Initializing port\n");
3407	goto out;
3408	}
3409	queue_delayed_work(wq: mdev->workqueue, dwork: &priv->stats_task, STATS_DELAY);
3410
3411	/* Initialize time stamp mechanism */
3412	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3413	mlx4_en_init_timestamp(mdev);
3414
3415	queue_delayed_work(wq: mdev->workqueue, dwork: &priv->service_task,
3416	SERVICE_TASK_DELAY);
3417
3418	mlx4_en_set_stats_bitmap(dev: mdev->dev, stats_bitmap: &priv->stats_bitmap,
3419	rx_ppp: mdev->profile.prof[priv->port].rx_ppp,
3420	rx_pause: mdev->profile.prof[priv->port].rx_pause,
3421	tx_ppp: mdev->profile.prof[priv->port].tx_ppp,
3422	tx_pause: mdev->profile.prof[priv->port].tx_pause);
3423
3424	SET_NETDEV_DEVLINK_PORT(dev,
3425	mlx4_get_devlink_port(mdev->dev, priv->port));
3426	err = register_netdev(dev);
3427	if (err) {
3428	en_err(priv, "Netdev registration failed for port %d\n", port);
3429	goto out;
3430	}
3431
3432	priv->registered = 1;
3433
3434	return 0;
3435
3436	out:
3437	mlx4_en_destroy_netdev(dev);
3438	return err;
3439	}
3440
3441	int mlx4_en_reset_config(struct net_device *dev,
3442	struct hwtstamp_config ts_config,
3443	netdev_features_t features)
3444	{
3445	struct mlx4_en_priv *priv = netdev_priv(dev);
3446	struct mlx4_en_dev *mdev = priv->mdev;
3447	struct mlx4_en_port_profile new_prof;
3448	struct mlx4_en_priv *tmp;
3449	int port_up = 0;
3450	int err = 0;
3451
3452	if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3453	priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3454	!DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3455	!DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3456	return 0; /* Nothing to change */
3457
3458	if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3459	(features & NETIF_F_HW_VLAN_CTAG_RX) &&
3460	(priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3461	en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3462	return -EINVAL;
3463	}
3464
3465	tmp = kzalloc(size: sizeof(*tmp), GFP_KERNEL);
3466	if (!tmp)
3467	return -ENOMEM;
3468
3469	mutex_lock(&mdev->state_lock);
3470
3471	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3472	memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3473
3474	err = mlx4_en_try_alloc_resources(priv, tmp, prof: &new_prof, carry_xdp_prog: true);
3475	if (err)
3476	goto out;
3477
3478	if (priv->port_up) {
3479	port_up = 1;
3480	mlx4_en_stop_port(dev, detach: 1);
3481	}
3482
3483	mlx4_en_safe_replace_resources(priv, tmp);
3484
3485	if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3486	if (features & NETIF_F_HW_VLAN_CTAG_RX)
3487	dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3488	else
3489	dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3490	} else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3491	/* RX time-stamping is OFF, update the RX vlan offload
3492	* to the latest wanted state
3493	*/
3494	if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3495	dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3496	else
3497	dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3498	}
3499
3500	if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3501	if (features & NETIF_F_RXFCS)
3502	dev->features |= NETIF_F_RXFCS;
3503	else
3504	dev->features &= ~NETIF_F_RXFCS;
3505	}
3506
3507	/* RX vlan offload and RX time-stamping can't co-exist !
3508	* Regardless of the caller's choice,
3509	* Turn Off RX vlan offload in case of time-stamping is ON
3510	*/
3511	if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3512	if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3513	en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3514	dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3515	}
3516
3517	if (port_up) {
3518	err = mlx4_en_start_port(dev);
3519	if (err)
3520	en_err(priv, "Failed starting port\n");
3521	}
3522
3523	if (!err)
3524	err = mlx4_en_moderation_update(priv);
3525	out:
3526	mutex_unlock(lock: &mdev->state_lock);
3527	kfree(objp: tmp);
3528	if (!err)
3529	netdev_features_change(dev);
3530	return err;
3531	}
3532