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
46	#include <linux/mlx4/driver.h>
47	#include <linux/mlx4/device.h>
48	#include <linux/mlx4/cmd.h>
49	#include <linux/mlx4/cq.h>
50
51	#include "mlx4_en.h"
52	#include "en_port.h"
53
54	#define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
55	XDP_PACKET_HEADROOM - \
56	SKB_DATA_ALIGN(sizeof(struct skb_shared_info))))
57
58	int mlx4_en_setup_tc(struct net_device *dev, u8 up)
59	{
60	struct mlx4_en_priv *priv = netdev_priv(dev);
61	int i;
62	unsigned int offset = 0;
63
64	if (up && up != MLX4_EN_NUM_UP_HIGH)
65	return -EINVAL;
66
67	netdev_set_num_tc(dev, num_tc: up);
68	netif_set_real_num_tx_queues(dev, txq: priv->tx_ring_num[TX]);
69	/* Partition Tx queues evenly amongst UP's */
70	for (i = 0; i < up; i++) {
71	netdev_set_tc_queue(dev, tc: i, count: priv->num_tx_rings_p_up, offset);
72	offset += priv->num_tx_rings_p_up;
73	}
74
75	#ifdef CONFIG_MLX4_EN_DCB
76	if (!mlx4_is_slave(dev: priv->mdev->dev)) {
77	if (up) {
78	if (priv->dcbx_cap)
79	priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
80	} else {
81	priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
82	priv->cee_config.pfc_state = false;
83	}
84	}
85	#endif /* CONFIG_MLX4_EN_DCB */
86
87	return 0;
88	}
89
90	int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc)
91	{
92	struct mlx4_en_priv *priv = netdev_priv(dev);
93	struct mlx4_en_dev *mdev = priv->mdev;
94	struct mlx4_en_port_profile new_prof;
95	struct mlx4_en_priv *tmp;
96	int total_count;
97	int port_up = 0;
98	int err = 0;
99
100	tmp = kzalloc(size: sizeof(*tmp), GFP_KERNEL);
101	if (!tmp)
102	return -ENOMEM;
103
104	mutex_lock(&mdev->state_lock);
105	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
106	new_prof.num_up = (tc == 0) ? MLX4_EN_NUM_UP_LOW :
107	MLX4_EN_NUM_UP_HIGH;
108	new_prof.tx_ring_num[TX] = new_prof.num_tx_rings_p_up *
109	new_prof.num_up;
110	total_count = new_prof.tx_ring_num[TX] + new_prof.tx_ring_num[TX_XDP];
111	if (total_count > MAX_TX_RINGS) {
112	err = -EINVAL;
113	en_err(priv,
114	"Total number of TX and XDP rings (%d) exceeds the maximum supported (%d)\n",
115	total_count, MAX_TX_RINGS);
116	goto out;
117	}
118	err = mlx4_en_try_alloc_resources(priv, tmp, prof: &new_prof, carry_xdp_prog: true);
119	if (err)
120	goto out;
121
122	if (priv->port_up) {
123	port_up = 1;
124	mlx4_en_stop_port(dev, detach: 1);
125	}
126
127	mlx4_en_safe_replace_resources(priv, tmp);
128	if (port_up) {
129	err = mlx4_en_start_port(dev);
130	if (err) {
131	en_err(priv, "Failed starting port for setup TC\n");
132	goto out;
133	}
134	}
135
136	err = mlx4_en_setup_tc(dev, up: tc);
137	out:
138	mutex_unlock(lock: &mdev->state_lock);
139	kfree(objp: tmp);
140	return err;
141	}
142
143	static int __mlx4_en_setup_tc(struct net_device *dev, enum tc_setup_type type,
144	void *type_data)
145	{
146	struct tc_mqprio_qopt *mqprio = type_data;
147
148	if (type != TC_SETUP_QDISC_MQPRIO)
149	return -EOPNOTSUPP;
150
151	if (mqprio->num_tc && mqprio->num_tc != MLX4_EN_NUM_UP_HIGH)
152	return -EINVAL;
153
154	mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
155
156	return mlx4_en_alloc_tx_queue_per_tc(dev, tc: mqprio->num_tc);
157	}
158
159	#ifdef CONFIG_RFS_ACCEL
160
161	struct mlx4_en_filter {
162	struct list_head next;
163	struct work_struct work;
164
165	u8 ip_proto;
166	__be32 src_ip;
167	__be32 dst_ip;
168	__be16 src_port;
169	__be16 dst_port;
170
171	int rxq_index;
172	struct mlx4_en_priv *priv;
173	u32 flow_id; /* RFS infrastructure id */
174	int id; /* mlx4_en driver id */
175	u64 reg_id; /* Flow steering API id */
176	u8 activated; /* Used to prevent expiry before filter
177	* is attached
178	*/
179	struct hlist_node filter_chain;
180	};
181
182	static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
183
184	static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
185	{
186	switch (ip_proto) {
187	case IPPROTO_UDP:
188	return MLX4_NET_TRANS_RULE_ID_UDP;
189	case IPPROTO_TCP:
190	return MLX4_NET_TRANS_RULE_ID_TCP;
191	default:
192	return MLX4_NET_TRANS_RULE_NUM;
193	}
194	};
195
196	/* Must not acquire state_lock, as its corresponding work_sync
197	* is done under it.
198	*/
199	static void mlx4_en_filter_work(struct work_struct *work)
200	{
201	struct mlx4_en_filter *filter = container_of(work,
202	struct mlx4_en_filter,
203	work);
204	struct mlx4_en_priv *priv = filter->priv;
205	struct mlx4_spec_list spec_tcp_udp = {
206	.id = mlx4_ip_proto_to_trans_rule_id(ip_proto: filter->ip_proto),
207	{
208	.tcp_udp = {
209	.dst_port = filter->dst_port,
210	.dst_port_msk = (__force __be16)-1,
211	.src_port = filter->src_port,
212	.src_port_msk = (__force __be16)-1,
213	},
214	},
215	};
216	struct mlx4_spec_list spec_ip = {
217	.id = MLX4_NET_TRANS_RULE_ID_IPV4,
218	{
219	.ipv4 = {
220	.dst_ip = filter->dst_ip,
221	.dst_ip_msk = (__force __be32)-1,
222	.src_ip = filter->src_ip,
223	.src_ip_msk = (__force __be32)-1,
224	},
225	},
226	};
227	struct mlx4_spec_list spec_eth = {
228	.id = MLX4_NET_TRANS_RULE_ID_ETH,
229	};
230	struct mlx4_net_trans_rule rule = {
231	.list = LIST_HEAD_INIT(rule.list),
232	.queue_mode = MLX4_NET_TRANS_Q_LIFO,
233	.exclusive = 1,
234	.allow_loopback = 1,
235	.promisc_mode = MLX4_FS_REGULAR,
236	.port = priv->port,
237	.priority = MLX4_DOMAIN_RFS,
238	};
239	int rc;
240	__be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
241
242	if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
243	en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
244	filter->ip_proto);
245	goto ignore;
246	}
247	list_add_tail(new: &spec_eth.list, head: &rule.list);
248	list_add_tail(new: &spec_ip.list, head: &rule.list);
249	list_add_tail(new: &spec_tcp_udp.list, head: &rule.list);
250
251	rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
252	memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
253	memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
254
255	filter->activated = 0;
256
257	if (filter->reg_id) {
258	rc = mlx4_flow_detach(dev: priv->mdev->dev, reg_id: filter->reg_id);
259	if (rc && rc != -ENOENT)
260	en_err(priv, "Error detaching flow. rc = %d\n", rc);
261	}
262
263	rc = mlx4_flow_attach(dev: priv->mdev->dev, rule: &rule, reg_id: &filter->reg_id);
264	if (rc)
265	en_err(priv, "Error attaching flow. err = %d\n", rc);
266
267	ignore:
268	mlx4_en_filter_rfs_expire(priv);
269
270	filter->activated = 1;
271	}
272
273	static inline struct hlist_head *
274	filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
275	__be16 src_port, __be16 dst_port)
276	{
277	unsigned long l;
278	int bucket_idx;
279
280	l = (__force unsigned long)src_port |
281	((__force unsigned long)dst_port << 2);
282	l ^= (__force unsigned long)(src_ip ^ dst_ip);
283
284	bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
285
286	return &priv->filter_hash[bucket_idx];
287	}
288
289	static struct mlx4_en_filter *
290	mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
291	__be32 dst_ip, u8 ip_proto, __be16 src_port,
292	__be16 dst_port, u32 flow_id)
293	{
294	struct mlx4_en_filter *filter;
295
296	filter = kzalloc(size: sizeof(struct mlx4_en_filter), GFP_ATOMIC);
297	if (!filter)
298	return NULL;
299
300	filter->priv = priv;
301	filter->rxq_index = rxq_index;
302	INIT_WORK(&filter->work, mlx4_en_filter_work);
303
304	filter->src_ip = src_ip;
305	filter->dst_ip = dst_ip;
306	filter->ip_proto = ip_proto;
307	filter->src_port = src_port;
308	filter->dst_port = dst_port;
309
310	filter->flow_id = flow_id;
311
312	filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
313
314	list_add_tail(new: &filter->next, head: &priv->filters);
315	hlist_add_head(n: &filter->filter_chain,
316	h: filter_hash_bucket(priv, src_ip, dst_ip, src_port,
317	dst_port));
318
319	return filter;
320	}
321
322	static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
323	{
324	struct mlx4_en_priv *priv = filter->priv;
325	int rc;
326
327	list_del(entry: &filter->next);
328
329	rc = mlx4_flow_detach(dev: priv->mdev->dev, reg_id: filter->reg_id);
330	if (rc && rc != -ENOENT)
331	en_err(priv, "Error detaching flow. rc = %d\n", rc);
332
333	kfree(objp: filter);
334	}
335
336	static inline struct mlx4_en_filter *
337	mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
338	u8 ip_proto, __be16 src_port, __be16 dst_port)
339	{
340	struct mlx4_en_filter *filter;
341	struct mlx4_en_filter *ret = NULL;
342
343	hlist_for_each_entry(filter,
344	filter_hash_bucket(priv, src_ip, dst_ip,
345	src_port, dst_port),
346	filter_chain) {
347	if (filter->src_ip == src_ip &&
348	filter->dst_ip == dst_ip &&
349	filter->ip_proto == ip_proto &&
350	filter->src_port == src_port &&
351	filter->dst_port == dst_port) {
352	ret = filter;
353	break;
354	}
355	}
356
357	return ret;
358	}
359
360	static int
361	mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
362	u16 rxq_index, u32 flow_id)
363	{
364	struct mlx4_en_priv *priv = netdev_priv(dev: net_dev);
365	struct mlx4_en_filter *filter;
366	const struct iphdr *ip;
367	const __be16 *ports;
368	u8 ip_proto;
369	__be32 src_ip;
370	__be32 dst_ip;
371	__be16 src_port;
372	__be16 dst_port;
373	int nhoff = skb_network_offset(skb);
374	int ret = 0;
375
376	if (skb->encapsulation)
377	return -EPROTONOSUPPORT;
378
379	if (skb->protocol != htons(ETH_P_IP))
380	return -EPROTONOSUPPORT;
381
382	ip = (const struct iphdr *)(skb->data + nhoff);
383	if (ip_is_fragment(iph: ip))
384	return -EPROTONOSUPPORT;
385
386	if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
387	return -EPROTONOSUPPORT;
388	ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
389
390	ip_proto = ip->protocol;
391	src_ip = ip->saddr;
392	dst_ip = ip->daddr;
393	src_port = ports[0];
394	dst_port = ports[1];
395
396	spin_lock_bh(lock: &priv->filters_lock);
397	filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
398	src_port, dst_port);
399	if (filter) {
400	if (filter->rxq_index == rxq_index)
401	goto out;
402
403	filter->rxq_index = rxq_index;
404	} else {
405	filter = mlx4_en_filter_alloc(priv, rxq_index,
406	src_ip, dst_ip, ip_proto,
407	src_port, dst_port, flow_id);
408	if (!filter) {
409	ret = -ENOMEM;
410	goto err;
411	}
412	}
413
414	queue_work(wq: priv->mdev->workqueue, work: &filter->work);
415
416	out:
417	ret = filter->id;
418	err:
419	spin_unlock_bh(lock: &priv->filters_lock);
420
421	return ret;
422	}
423
424	void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
425	{
426	struct mlx4_en_filter *filter, *tmp;
427	LIST_HEAD(del_list);
428
429	spin_lock_bh(lock: &priv->filters_lock);
430	list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
431	list_move(list: &filter->next, head: &del_list);
432	hlist_del(n: &filter->filter_chain);
433	}
434	spin_unlock_bh(lock: &priv->filters_lock);
435
436	list_for_each_entry_safe(filter, tmp, &del_list, next) {
437	cancel_work_sync(work: &filter->work);
438	mlx4_en_filter_free(filter);
439	}
440	}
441
442	static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
443	{
444	struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
445	LIST_HEAD(del_list);
446	int i = 0;
447
448	spin_lock_bh(lock: &priv->filters_lock);
449	list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
450	if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
451	break;
452
453	if (filter->activated &&
454	!work_pending(&filter->work) &&
455	rps_may_expire_flow(dev: priv->dev,
456	rxq_index: filter->rxq_index, flow_id: filter->flow_id,
457	filter_id: filter->id)) {
458	list_move(list: &filter->next, head: &del_list);
459	hlist_del(n: &filter->filter_chain);
460	} else
461	last_filter = filter;
462
463	i++;
464	}
465
466	if (last_filter && (&last_filter->next != priv->filters.next))
467	list_move(list: &priv->filters, head: &last_filter->next);
468
469	spin_unlock_bh(lock: &priv->filters_lock);
470
471	list_for_each_entry_safe(filter, tmp, &del_list, next)
472	mlx4_en_filter_free(filter);
473	}
474	#endif
475
476	static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
477	__be16 proto, u16 vid)
478	{
479	struct mlx4_en_priv *priv = netdev_priv(dev);
480	struct mlx4_en_dev *mdev = priv->mdev;
481	int err;
482	int idx;
483
484	en_dbg(HW, priv, "adding VLAN:%d\n", vid);
485
486	set_bit(nr: vid, addr: priv->active_vlans);
487
488	/* Add VID to port VLAN filter */
489	mutex_lock(&mdev->state_lock);
490	if (mdev->device_up && priv->port_up) {
491	err = mlx4_SET_VLAN_FLTR(dev: mdev->dev, priv);
492	if (err) {
493	en_err(priv, "Failed configuring VLAN filter\n");
494	goto out;
495	}
496	}
497	err = mlx4_register_vlan(dev: mdev->dev, port: priv->port, vlan: vid, index: &idx);
498	if (err)
499	en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
500
501	out:
502	mutex_unlock(lock: &mdev->state_lock);
503	return err;
504	}
505
506	static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
507	__be16 proto, u16 vid)
508	{
509	struct mlx4_en_priv *priv = netdev_priv(dev);
510	struct mlx4_en_dev *mdev = priv->mdev;
511	int err = 0;
512
513	en_dbg(HW, priv, "Killing VID:%d\n", vid);
514
515	clear_bit(nr: vid, addr: priv->active_vlans);
516
517	/* Remove VID from port VLAN filter */
518	mutex_lock(&mdev->state_lock);
519	mlx4_unregister_vlan(dev: mdev->dev, port: priv->port, vlan: vid);
520
521	if (mdev->device_up && priv->port_up) {
522	err = mlx4_SET_VLAN_FLTR(dev: mdev->dev, priv);
523	if (err)
524	en_err(priv, "Failed configuring VLAN filter\n");
525	}
526	mutex_unlock(lock: &mdev->state_lock);
527
528	return err;
529	}
530
531	static void mlx4_en_u64_to_mac(struct net_device *dev, u64 src_mac)
532	{
533	u8 addr[ETH_ALEN];
534
535	u64_to_ether_addr(u: src_mac, addr);
536	eth_hw_addr_set(dev, addr);
537	}
538
539
540	static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv,
541	const unsigned char *addr,
542	int qpn, u64 *reg_id)
543	{
544	int err;
545
546	if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
547	priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
548	return 0; /* do nothing */
549
550	err = mlx4_tunnel_steer_add(dev: priv->mdev->dev, addr, port: priv->port, qpn,
551	prio: MLX4_DOMAIN_NIC, reg_id);
552	if (err) {
553	en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
554	return err;
555	}
556	en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
557	return 0;
558	}
559
560
561	static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
562	const unsigned char *mac, int *qpn, u64 *reg_id)
563	{
564	struct mlx4_en_dev *mdev = priv->mdev;
565	struct mlx4_dev *dev = mdev->dev;
566	int err;
567
568	switch (dev->caps.steering_mode) {
569	case MLX4_STEERING_MODE_B0: {
570	struct mlx4_qp qp;
571	u8 gid[16] = {0};
572
573	qp.qpn = *qpn;
574	memcpy(&gid[10], mac, ETH_ALEN);
575	gid[5] = priv->port;
576
577	err = mlx4_unicast_attach(dev, qp: &qp, gid, block_mcast_loopback: 0, prot: MLX4_PROT_ETH);
578	break;
579	}
580	case MLX4_STEERING_MODE_DEVICE_MANAGED: {
581	struct mlx4_spec_list spec_eth = { {NULL} };
582	__be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
583
584	struct mlx4_net_trans_rule rule = {
585	.queue_mode = MLX4_NET_TRANS_Q_FIFO,
586	.exclusive = 0,
587	.allow_loopback = 1,
588	.promisc_mode = MLX4_FS_REGULAR,
589	.priority = MLX4_DOMAIN_NIC,
590	};
591
592	rule.port = priv->port;
593	rule.qpn = *qpn;
594	INIT_LIST_HEAD(list: &rule.list);
595
596	spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
597	memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
598	memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
599	list_add_tail(new: &spec_eth.list, head: &rule.list);
600
601	err = mlx4_flow_attach(dev, rule: &rule, reg_id);
602	break;
603	}
604	default:
605	return -EINVAL;
606	}
607	if (err)
608	en_warn(priv, "Failed Attaching Unicast\n");
609
610	return err;
611	}
612
613	static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
614	const unsigned char *mac,
615	int qpn, u64 reg_id)
616	{
617	struct mlx4_en_dev *mdev = priv->mdev;
618	struct mlx4_dev *dev = mdev->dev;
619
620	switch (dev->caps.steering_mode) {
621	case MLX4_STEERING_MODE_B0: {
622	struct mlx4_qp qp;
623	u8 gid[16] = {0};
624
625	qp.qpn = qpn;
626	memcpy(&gid[10], mac, ETH_ALEN);
627	gid[5] = priv->port;
628
629	mlx4_unicast_detach(dev, qp: &qp, gid, prot: MLX4_PROT_ETH);
630	break;
631	}
632	case MLX4_STEERING_MODE_DEVICE_MANAGED: {
633	mlx4_flow_detach(dev, reg_id);
634	break;
635	}
636	default:
637	en_err(priv, "Invalid steering mode.\n");
638	}
639	}
640
641	static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
642	{
643	struct mlx4_en_dev *mdev = priv->mdev;
644	struct mlx4_dev *dev = mdev->dev;
645	int index = 0;
646	int err = 0;
647	int *qpn = &priv->base_qpn;
648	u64 mac = ether_addr_to_u64(addr: priv->dev->dev_addr);
649
650	en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
651	priv->dev->dev_addr);
652	index = mlx4_register_mac(dev, port: priv->port, mac);
653	if (index < 0) {
654	err = index;
655	en_err(priv, "Failed adding MAC: %pM\n",
656	priv->dev->dev_addr);
657	return err;
658	}
659
660	en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode);
661
662	if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
663	int base_qpn = mlx4_get_base_qpn(dev, port: priv->port);
664	*qpn = base_qpn + index;
665	return 0;
666	}
667
668	err = mlx4_qp_reserve_range(dev, cnt: 1, align: 1, base: qpn, flags: MLX4_RESERVE_A0_QP,
669	usage: MLX4_RES_USAGE_DRIVER);
670	en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
671	if (err) {
672	en_err(priv, "Failed to reserve qp for mac registration\n");
673	mlx4_unregister_mac(dev, port: priv->port, mac);
674	return err;
675	}
676
677	return 0;
678	}
679
680	static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
681	{
682	struct mlx4_en_dev *mdev = priv->mdev;
683	struct mlx4_dev *dev = mdev->dev;
684	int qpn = priv->base_qpn;
685
686	if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
687	u64 mac = ether_addr_to_u64(addr: priv->dev->dev_addr);
688	en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
689	priv->dev->dev_addr);
690	mlx4_unregister_mac(dev, port: priv->port, mac);
691	} else {
692	en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
693	priv->port, qpn);
694	mlx4_qp_release_range(dev, base_qpn: qpn, cnt: 1);
695	priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
696	}
697	}
698
699	static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
700	unsigned char *new_mac, unsigned char *prev_mac)
701	{
702	struct mlx4_en_dev *mdev = priv->mdev;
703	struct mlx4_dev *dev = mdev->dev;
704	int err = 0;
705	u64 new_mac_u64 = ether_addr_to_u64(addr: new_mac);
706
707	if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
708	struct hlist_head *bucket;
709	unsigned int mac_hash;
710	struct mlx4_mac_entry *entry;
711	struct hlist_node *tmp;
712	u64 prev_mac_u64 = ether_addr_to_u64(addr: prev_mac);
713
714	bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
715	hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
716	if (ether_addr_equal_64bits(addr1: entry->mac, addr2: prev_mac)) {
717	mlx4_en_uc_steer_release(priv, mac: entry->mac,
718	qpn, reg_id: entry->reg_id);
719	mlx4_unregister_mac(dev, port: priv->port,
720	mac: prev_mac_u64);
721	hlist_del_rcu(n: &entry->hlist);
722	synchronize_rcu();
723	memcpy(entry->mac, new_mac, ETH_ALEN);
724	entry->reg_id = 0;
725	mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
726	hlist_add_head_rcu(n: &entry->hlist,
727	h: &priv->mac_hash[mac_hash]);
728	mlx4_register_mac(dev, port: priv->port, mac: new_mac_u64);
729	err = mlx4_en_uc_steer_add(priv, mac: new_mac,
730	qpn: &qpn,
731	reg_id: &entry->reg_id);
732	if (err)
733	return err;
734	if (priv->tunnel_reg_id) {
735	mlx4_flow_detach(dev: priv->mdev->dev, reg_id: priv->tunnel_reg_id);
736	priv->tunnel_reg_id = 0;
737	}
738	err = mlx4_en_tunnel_steer_add(priv, addr: new_mac, qpn,
739	reg_id: &priv->tunnel_reg_id);
740	return err;
741	}
742	}
743	return -EINVAL;
744	}
745
746	return __mlx4_replace_mac(dev, port: priv->port, qpn, new_mac: new_mac_u64);
747	}
748
749	static void mlx4_en_update_user_mac(struct mlx4_en_priv *priv,
750	unsigned char new_mac[ETH_ALEN + 2])
751	{
752	struct mlx4_en_dev *mdev = priv->mdev;
753	int err;
754
755	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_USER_MAC_EN))
756	return;
757
758	err = mlx4_SET_PORT_user_mac(dev: mdev->dev, port: priv->port, user_mac: new_mac);
759	if (err)
760	en_err(priv, "Failed to pass user MAC(%pM) to Firmware for port %d, with error %d\n",
761	new_mac, priv->port, err);
762	}
763
764	static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
765	unsigned char new_mac[ETH_ALEN + 2])
766	{
767	int err = 0;
768
769	if (priv->port_up) {
770	/* Remove old MAC and insert the new one */
771	err = mlx4_en_replace_mac(priv, qpn: priv->base_qpn,
772	new_mac, prev_mac: priv->current_mac);
773	if (err)
774	en_err(priv, "Failed changing HW MAC address\n");
775	} else
776	en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
777
778	if (!err)
779	memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
780
781	return err;
782	}
783
784	static int mlx4_en_set_mac(struct net_device *dev, void *addr)
785	{
786	struct mlx4_en_priv *priv = netdev_priv(dev);
787	struct mlx4_en_dev *mdev = priv->mdev;
788	struct sockaddr *saddr = addr;
789	unsigned char new_mac[ETH_ALEN + 2];
790	int err;
791
792	if (!is_valid_ether_addr(addr: saddr->sa_data))
793	return -EADDRNOTAVAIL;
794
795	mutex_lock(&mdev->state_lock);
796	memcpy(new_mac, saddr->sa_data, ETH_ALEN);
797	err = mlx4_en_do_set_mac(priv, new_mac);
798	if (err)
799	goto out;
800
801	eth_hw_addr_set(dev, addr: saddr->sa_data);
802	mlx4_en_update_user_mac(priv, new_mac);
803	out:
804	mutex_unlock(lock: &mdev->state_lock);
805
806	return err;
807	}
808
809	static void mlx4_en_clear_list(struct net_device *dev)
810	{
811	struct mlx4_en_priv *priv = netdev_priv(dev);
812	struct mlx4_en_mc_list *tmp, *mc_to_del;
813
814	list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
815	list_del(entry: &mc_to_del->list);
816	kfree(objp: mc_to_del);
817	}
818	}
819
820	static void mlx4_en_cache_mclist(struct net_device *dev)
821	{
822	struct mlx4_en_priv *priv = netdev_priv(dev);
823	struct netdev_hw_addr *ha;
824	struct mlx4_en_mc_list *tmp;
825
826	mlx4_en_clear_list(dev);
827	netdev_for_each_mc_addr(ha, dev) {
828	tmp = kzalloc(size: sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
829	if (!tmp) {
830	mlx4_en_clear_list(dev);
831	return;
832	}
833	memcpy(tmp->addr, ha->addr, ETH_ALEN);
834	list_add_tail(new: &tmp->list, head: &priv->mc_list);
835	}
836	}
837
838	static void update_mclist_flags(struct mlx4_en_priv *priv,
839	struct list_head *dst,
840	struct list_head *src)
841	{
842	struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
843	bool found;
844
845	/* Find all the entries that should be removed from dst,
846	* These are the entries that are not found in src
847	*/
848	list_for_each_entry(dst_tmp, dst, list) {
849	found = false;
850	list_for_each_entry(src_tmp, src, list) {
851	if (ether_addr_equal(addr1: dst_tmp->addr, addr2: src_tmp->addr)) {
852	found = true;
853	break;
854	}
855	}
856	if (!found)
857	dst_tmp->action = MCLIST_REM;
858	}
859
860	/* Add entries that exist in src but not in dst
861	* mark them as need to add
862	*/
863	list_for_each_entry(src_tmp, src, list) {
864	found = false;
865	list_for_each_entry(dst_tmp, dst, list) {
866	if (ether_addr_equal(addr1: dst_tmp->addr, addr2: src_tmp->addr)) {
867	dst_tmp->action = MCLIST_NONE;
868	found = true;
869	break;
870	}
871	}
872	if (!found) {
873	new_mc = kmemdup(p: src_tmp,
874	size: sizeof(struct mlx4_en_mc_list),
875	GFP_KERNEL);
876	if (!new_mc)
877	return;
878
879	new_mc->action = MCLIST_ADD;
880	list_add_tail(new: &new_mc->list, head: dst);
881	}
882	}
883	}
884
885	static void mlx4_en_set_rx_mode(struct net_device *dev)
886	{
887	struct mlx4_en_priv *priv = netdev_priv(dev);
888
889	if (!priv->port_up)
890	return;
891
892	queue_work(wq: priv->mdev->workqueue, work: &priv->rx_mode_task);
893	}
894
895	static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
896	struct mlx4_en_dev *mdev)
897	{
898	int err = 0;
899
900	if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
901	if (netif_msg_rx_status(priv))
902	en_warn(priv, "Entering promiscuous mode\n");
903	priv->flags |= MLX4_EN_FLAG_PROMISC;
904
905	/* Enable promiscouos mode */
906	switch (mdev->dev->caps.steering_mode) {
907	case MLX4_STEERING_MODE_DEVICE_MANAGED:
908	err = mlx4_flow_steer_promisc_add(dev: mdev->dev,
909	port: priv->port,
910	qpn: priv->base_qpn,
911	mode: MLX4_FS_ALL_DEFAULT);
912	if (err)
913	en_err(priv, "Failed enabling promiscuous mode\n");
914	priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
915	break;
916
917	case MLX4_STEERING_MODE_B0:
918	err = mlx4_unicast_promisc_add(dev: mdev->dev,
919	qpn: priv->base_qpn,
920	port: priv->port);
921	if (err)
922	en_err(priv, "Failed enabling unicast promiscuous mode\n");
923
924	/* Add the default qp number as multicast
925	* promisc
926	*/
927	if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
928	err = mlx4_multicast_promisc_add(dev: mdev->dev,
929	qpn: priv->base_qpn,
930	port: priv->port);
931	if (err)
932	en_err(priv, "Failed enabling multicast promiscuous mode\n");
933	priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
934	}
935	break;
936
937	case MLX4_STEERING_MODE_A0:
938	err = mlx4_SET_PORT_qpn_calc(dev: mdev->dev,
939	port: priv->port,
940	base_qpn: priv->base_qpn,
941	promisc: 1);
942	if (err)
943	en_err(priv, "Failed enabling promiscuous mode\n");
944	break;
945	}
946
947	/* Disable port multicast filter (unconditionally) */
948	err = mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port, mac: 0,
949	clear: 0, mode: MLX4_MCAST_DISABLE);
950	if (err)
951	en_err(priv, "Failed disabling multicast filter\n");
952	}
953	}
954
955	static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
956	struct mlx4_en_dev *mdev)
957	{
958	int err = 0;
959
960	if (netif_msg_rx_status(priv))
961	en_warn(priv, "Leaving promiscuous mode\n");
962	priv->flags &= ~MLX4_EN_FLAG_PROMISC;
963
964	/* Disable promiscouos mode */
965	switch (mdev->dev->caps.steering_mode) {
966	case MLX4_STEERING_MODE_DEVICE_MANAGED:
967	err = mlx4_flow_steer_promisc_remove(dev: mdev->dev,
968	port: priv->port,
969	mode: MLX4_FS_ALL_DEFAULT);
970	if (err)
971	en_err(priv, "Failed disabling promiscuous mode\n");
972	priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
973	break;
974
975	case MLX4_STEERING_MODE_B0:
976	err = mlx4_unicast_promisc_remove(dev: mdev->dev,
977	qpn: priv->base_qpn,
978	port: priv->port);
979	if (err)
980	en_err(priv, "Failed disabling unicast promiscuous mode\n");
981	/* Disable Multicast promisc */
982	if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
983	err = mlx4_multicast_promisc_remove(dev: mdev->dev,
984	qpn: priv->base_qpn,
985	port: priv->port);
986	if (err)
987	en_err(priv, "Failed disabling multicast promiscuous mode\n");
988	priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
989	}
990	break;
991
992	case MLX4_STEERING_MODE_A0:
993	err = mlx4_SET_PORT_qpn_calc(dev: mdev->dev,
994	port: priv->port,
995	base_qpn: priv->base_qpn, promisc: 0);
996	if (err)
997	en_err(priv, "Failed disabling promiscuous mode\n");
998	break;
999	}
1000	}
1001
1002	static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
1003	struct net_device *dev,
1004	struct mlx4_en_dev *mdev)
1005	{
1006	struct mlx4_en_mc_list *mclist, *tmp;
1007	u64 mcast_addr = 0;
1008	u8 mc_list[16] = {0};
1009	int err = 0;
1010
1011	/* Enable/disable the multicast filter according to IFF_ALLMULTI */
1012	if (dev->flags & IFF_ALLMULTI) {
1013	err = mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port, mac: 0,
1014	clear: 0, mode: MLX4_MCAST_DISABLE);
1015	if (err)
1016	en_err(priv, "Failed disabling multicast filter\n");
1017
1018	/* Add the default qp number as multicast promisc */
1019	if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1020	switch (mdev->dev->caps.steering_mode) {
1021	case MLX4_STEERING_MODE_DEVICE_MANAGED:
1022	err = mlx4_flow_steer_promisc_add(dev: mdev->dev,
1023	port: priv->port,
1024	qpn: priv->base_qpn,
1025	mode: MLX4_FS_MC_DEFAULT);
1026	break;
1027
1028	case MLX4_STEERING_MODE_B0:
1029	err = mlx4_multicast_promisc_add(dev: mdev->dev,
1030	qpn: priv->base_qpn,
1031	port: priv->port);
1032	break;
1033
1034	case MLX4_STEERING_MODE_A0:
1035	break;
1036	}
1037	if (err)
1038	en_err(priv, "Failed entering multicast promisc mode\n");
1039	priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1040	}
1041	} else {
1042	/* Disable Multicast promisc */
1043	if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1044	switch (mdev->dev->caps.steering_mode) {
1045	case MLX4_STEERING_MODE_DEVICE_MANAGED:
1046	err = mlx4_flow_steer_promisc_remove(dev: mdev->dev,
1047	port: priv->port,
1048	mode: MLX4_FS_MC_DEFAULT);
1049	break;
1050
1051	case MLX4_STEERING_MODE_B0:
1052	err = mlx4_multicast_promisc_remove(dev: mdev->dev,
1053	qpn: priv->base_qpn,
1054	port: priv->port);
1055	break;
1056
1057	case MLX4_STEERING_MODE_A0:
1058	break;
1059	}
1060	if (err)
1061	en_err(priv, "Failed disabling multicast promiscuous mode\n");
1062	priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1063	}
1064
1065	err = mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port, mac: 0,
1066	clear: 0, mode: MLX4_MCAST_DISABLE);
1067	if (err)
1068	en_err(priv, "Failed disabling multicast filter\n");
1069
1070	/* Flush mcast filter and init it with broadcast address */
1071	mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port, ETH_BCAST,
1072	clear: 1, mode: MLX4_MCAST_CONFIG);
1073
1074	/* Update multicast list - we cache all addresses so they won't
1075	* change while HW is updated holding the command semaphor */
1076	netif_addr_lock_bh(dev);
1077	mlx4_en_cache_mclist(dev);
1078	netif_addr_unlock_bh(dev);
1079	list_for_each_entry(mclist, &priv->mc_list, list) {
1080	mcast_addr = ether_addr_to_u64(addr: mclist->addr);
1081	mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port,
1082	mac: mcast_addr, clear: 0, mode: MLX4_MCAST_CONFIG);
1083	}
1084	err = mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port, mac: 0,
1085	clear: 0, mode: MLX4_MCAST_ENABLE);
1086	if (err)
1087	en_err(priv, "Failed enabling multicast filter\n");
1088
1089	update_mclist_flags(priv, dst: &priv->curr_list, src: &priv->mc_list);
1090	list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1091	if (mclist->action == MCLIST_REM) {
1092	/* detach this address and delete from list */
1093	memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1094	mc_list[5] = priv->port;
1095	err = mlx4_multicast_detach(dev: mdev->dev,
1096	qp: priv->rss_map.indir_qp,
1097	gid: mc_list,
1098	protocol: MLX4_PROT_ETH,
1099	reg_id: mclist->reg_id);
1100	if (err)
1101	en_err(priv, "Fail to detach multicast address\n");
1102
1103	if (mclist->tunnel_reg_id) {
1104	err = mlx4_flow_detach(dev: priv->mdev->dev, reg_id: mclist->tunnel_reg_id);
1105	if (err)
1106	en_err(priv, "Failed to detach multicast address\n");
1107	}
1108
1109	/* remove from list */
1110	list_del(entry: &mclist->list);
1111	kfree(objp: mclist);
1112	} else if (mclist->action == MCLIST_ADD) {
1113	/* attach the address */
1114	memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1115	/* needed for B0 steering support */
1116	mc_list[5] = priv->port;
1117	err = mlx4_multicast_attach(dev: mdev->dev,
1118	qp: priv->rss_map.indir_qp,
1119	gid: mc_list,
1120	port: priv->port, block_mcast_loopback: 0,
1121	protocol: MLX4_PROT_ETH,
1122	reg_id: &mclist->reg_id);
1123	if (err)
1124	en_err(priv, "Fail to attach multicast address\n");
1125
1126	err = mlx4_en_tunnel_steer_add(priv, addr: &mc_list[10], qpn: priv->base_qpn,
1127	reg_id: &mclist->tunnel_reg_id);
1128	if (err)
1129	en_err(priv, "Failed to attach multicast address\n");
1130	}
1131	}
1132	}
1133	}
1134
1135	static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1136	struct net_device *dev,
1137	struct mlx4_en_dev *mdev)
1138	{
1139	struct netdev_hw_addr *ha;
1140	struct mlx4_mac_entry *entry;
1141	struct hlist_node *tmp;
1142	bool found;
1143	u64 mac;
1144	int err = 0;
1145	struct hlist_head *bucket;
1146	unsigned int i;
1147	int removed = 0;
1148	u32 prev_flags;
1149
1150	/* Note that we do not need to protect our mac_hash traversal with rcu,
1151	* since all modification code is protected by mdev->state_lock
1152	*/
1153
1154	/* find what to remove */
1155	for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1156	bucket = &priv->mac_hash[i];
1157	hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1158	found = false;
1159	netdev_for_each_uc_addr(ha, dev) {
1160	if (ether_addr_equal_64bits(addr1: entry->mac,
1161	addr2: ha->addr)) {
1162	found = true;
1163	break;
1164	}
1165	}
1166
1167	/* MAC address of the port is not in uc list */
1168	if (ether_addr_equal_64bits(addr1: entry->mac,
1169	addr2: priv->current_mac))
1170	found = true;
1171
1172	if (!found) {
1173	mac = ether_addr_to_u64(addr: entry->mac);
1174	mlx4_en_uc_steer_release(priv, mac: entry->mac,
1175	qpn: priv->base_qpn,
1176	reg_id: entry->reg_id);
1177	mlx4_unregister_mac(dev: mdev->dev, port: priv->port, mac);
1178
1179	hlist_del_rcu(n: &entry->hlist);
1180	kfree_rcu(entry, rcu);
1181	en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1182	entry->mac, priv->port);
1183	++removed;
1184	}
1185	}
1186	}
1187
1188	/* if we didn't remove anything, there is no use in trying to add
1189	* again once we are in a forced promisc mode state
1190	*/
1191	if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1192	return;
1193
1194	prev_flags = priv->flags;
1195	priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1196
1197	/* find what to add */
1198	netdev_for_each_uc_addr(ha, dev) {
1199	found = false;
1200	bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1201	hlist_for_each_entry(entry, bucket, hlist) {
1202	if (ether_addr_equal_64bits(addr1: entry->mac, addr2: ha->addr)) {
1203	found = true;
1204	break;
1205	}
1206	}
1207
1208	if (!found) {
1209	entry = kmalloc(size: sizeof(*entry), GFP_KERNEL);
1210	if (!entry) {
1211	en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1212	ha->addr, priv->port);
1213	priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1214	break;
1215	}
1216	mac = ether_addr_to_u64(addr: ha->addr);
1217	memcpy(entry->mac, ha->addr, ETH_ALEN);
1218	err = mlx4_register_mac(dev: mdev->dev, port: priv->port, mac);
1219	if (err < 0) {
1220	en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1221	ha->addr, priv->port, err);
1222	kfree(objp: entry);
1223	priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1224	break;
1225	}
1226	err = mlx4_en_uc_steer_add(priv, mac: ha->addr,
1227	qpn: &priv->base_qpn,
1228	reg_id: &entry->reg_id);
1229	if (err) {
1230	en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1231	ha->addr, priv->port, err);
1232	mlx4_unregister_mac(dev: mdev->dev, port: priv->port, mac);
1233	kfree(objp: entry);
1234	priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1235	break;
1236	} else {
1237	unsigned int mac_hash;
1238	en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1239	ha->addr, priv->port);
1240	mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1241	bucket = &priv->mac_hash[mac_hash];
1242	hlist_add_head_rcu(n: &entry->hlist, h: bucket);
1243	}
1244	}
1245	}
1246
1247	if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1248	en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1249	priv->port);
1250	} else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1251	en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1252	priv->port);
1253	}
1254	}
1255
1256	static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1257	{
1258	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1259	rx_mode_task);
1260	struct mlx4_en_dev *mdev = priv->mdev;
1261	struct net_device *dev = priv->dev;
1262
1263	mutex_lock(&mdev->state_lock);
1264	if (!mdev->device_up) {
1265	en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1266	goto out;
1267	}
1268	if (!priv->port_up) {
1269	en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1270	goto out;
1271	}
1272
1273	if (!netif_carrier_ok(dev)) {
1274	if (!mlx4_en_QUERY_PORT(mdev, port: priv->port)) {
1275	if (priv->port_state.link_state) {
1276	netif_carrier_on(dev);
1277	en_dbg(LINK, priv, "Link Up\n");
1278	}
1279	}
1280	}
1281
1282	if (dev->priv_flags & IFF_UNICAST_FLT)
1283	mlx4_en_do_uc_filter(priv, dev, mdev);
1284
1285	/* Promsicuous mode: disable all filters */
1286	if ((dev->flags & IFF_PROMISC) ||
1287	(priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1288	mlx4_en_set_promisc_mode(priv, mdev);
1289	goto out;
1290	}
1291
1292	/* Not in promiscuous mode */
1293	if (priv->flags & MLX4_EN_FLAG_PROMISC)
1294	mlx4_en_clear_promisc_mode(priv, mdev);
1295
1296	mlx4_en_do_multicast(priv, dev, mdev);
1297	out:
1298	mutex_unlock(lock: &mdev->state_lock);
1299	}
1300
1301	static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1302	{
1303	u64 reg_id;
1304	int err = 0;
1305	int *qpn = &priv->base_qpn;
1306	struct mlx4_mac_entry *entry;
1307
1308	err = mlx4_en_uc_steer_add(priv, mac: priv->dev->dev_addr, qpn, reg_id: &reg_id);
1309	if (err)
1310	return err;
1311
1312	err = mlx4_en_tunnel_steer_add(priv, addr: priv->dev->dev_addr, qpn: *qpn,
1313	reg_id: &priv->tunnel_reg_id);
1314	if (err)
1315	goto tunnel_err;
1316
1317	entry = kmalloc(size: sizeof(*entry), GFP_KERNEL);
1318	if (!entry) {
1319	err = -ENOMEM;
1320	goto alloc_err;
1321	}
1322
1323	memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1324	memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1325	entry->reg_id = reg_id;
1326	hlist_add_head_rcu(n: &entry->hlist,
1327	h: &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1328
1329	return 0;
1330
1331	alloc_err:
1332	if (priv->tunnel_reg_id)
1333	mlx4_flow_detach(dev: priv->mdev->dev, reg_id: priv->tunnel_reg_id);
1334
1335	tunnel_err:
1336	mlx4_en_uc_steer_release(priv, mac: priv->dev->dev_addr, qpn: *qpn, reg_id);
1337	return err;
1338	}
1339
1340	static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1341	{
1342	u64 mac;
1343	unsigned int i;
1344	int qpn = priv->base_qpn;
1345	struct hlist_head *bucket;
1346	struct hlist_node *tmp;
1347	struct mlx4_mac_entry *entry;
1348
1349	for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1350	bucket = &priv->mac_hash[i];
1351	hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1352	mac = ether_addr_to_u64(addr: entry->mac);
1353	en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1354	entry->mac);
1355	mlx4_en_uc_steer_release(priv, mac: entry->mac,
1356	qpn, reg_id: entry->reg_id);
1357
1358	mlx4_unregister_mac(dev: priv->mdev->dev, port: priv->port, mac);
1359	hlist_del_rcu(n: &entry->hlist);
1360	kfree_rcu(entry, rcu);
1361	}
1362	}
1363
1364	if (priv->tunnel_reg_id) {
1365	mlx4_flow_detach(dev: priv->mdev->dev, reg_id: priv->tunnel_reg_id);
1366	priv->tunnel_reg_id = 0;
1367	}
1368	}
1369
1370	static void mlx4_en_tx_timeout(struct net_device *dev, unsigned int txqueue)
1371	{
1372	struct mlx4_en_priv *priv = netdev_priv(dev);
1373	struct mlx4_en_dev *mdev = priv->mdev;
1374	struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][txqueue];
1375
1376	if (netif_msg_timer(priv))
1377	en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1378
1379	en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1380	txqueue, tx_ring->qpn, tx_ring->sp_cqn,
1381	tx_ring->cons, tx_ring->prod);
1382
1383	priv->port_stats.tx_timeout++;
1384	if (!test_and_set_bit(nr: MLX4_EN_STATE_FLAG_RESTARTING, addr: &priv->state)) {
1385	en_dbg(DRV, priv, "Scheduling port restart\n");
1386	queue_work(wq: mdev->workqueue, work: &priv->restart_task);
1387	}
1388	}
1389
1390
1391	static void
1392	mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1393	{
1394	struct mlx4_en_priv *priv = netdev_priv(dev);
1395
1396	spin_lock_bh(lock: &priv->stats_lock);
1397	mlx4_en_fold_software_stats(dev);
1398	netdev_stats_to_stats64(stats64: stats, netdev_stats: &dev->stats);
1399	spin_unlock_bh(lock: &priv->stats_lock);
1400	}
1401
1402	static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1403	{
1404	struct mlx4_en_cq *cq;
1405	int i, t;
1406
1407	/* If we haven't received a specific coalescing setting
1408	* (module param), we set the moderation parameters as follows:
1409	* - moder_cnt is set to the number of mtu sized packets to
1410	* satisfy our coalescing target.
1411	* - moder_time is set to a fixed value.
1412	*/
1413	priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1414	priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1415	priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1416	priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1417	en_dbg(INTR, priv, "Default coalescing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1418	priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1419
1420	/* Setup cq moderation params */
1421	for (i = 0; i < priv->rx_ring_num; i++) {
1422	cq = priv->rx_cq[i];
1423	cq->moder_cnt = priv->rx_frames;
1424	cq->moder_time = priv->rx_usecs;
1425	priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1426	priv->last_moder_packets[i] = 0;
1427	priv->last_moder_bytes[i] = 0;
1428	}
1429
1430	for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1431	for (i = 0; i < priv->tx_ring_num[t]; i++) {
1432	cq = priv->tx_cq[t][i];
1433	cq->moder_cnt = priv->tx_frames;
1434	cq->moder_time = priv->tx_usecs;
1435	}
1436	}
1437
1438	/* Reset auto-moderation params */
1439	priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1440	priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1441	priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1442	priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1443	priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1444	priv->adaptive_rx_coal = 1;
1445	priv->last_moder_jiffies = 0;
1446	priv->last_moder_tx_packets = 0;
1447	}
1448
1449	static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1450	{
1451	unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1452	u32 pkt_rate_high, pkt_rate_low;
1453	struct mlx4_en_cq *cq;
1454	unsigned long packets;
1455	unsigned long rate;
1456	unsigned long avg_pkt_size;
1457	unsigned long rx_packets;
1458	unsigned long rx_bytes;
1459	unsigned long rx_pkt_diff;
1460	int moder_time;
1461	int ring, err;
1462
1463	if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1464	return;
1465
1466	pkt_rate_low = READ_ONCE(priv->pkt_rate_low);
1467	pkt_rate_high = READ_ONCE(priv->pkt_rate_high);
1468
1469	for (ring = 0; ring < priv->rx_ring_num; ring++) {
1470	rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1471	rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1472
1473	rx_pkt_diff = rx_packets - priv->last_moder_packets[ring];
1474	packets = rx_pkt_diff;
1475	rate = packets * HZ / period;
1476	avg_pkt_size = packets ? (rx_bytes -
1477	priv->last_moder_bytes[ring]) / packets : 0;
1478
1479	/* Apply auto-moderation only when packet rate
1480	* exceeds a rate that it matters */
1481	if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1482	avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1483	if (rate <= pkt_rate_low)
1484	moder_time = priv->rx_usecs_low;
1485	else if (rate >= pkt_rate_high)
1486	moder_time = priv->rx_usecs_high;
1487	else
1488	moder_time = (rate - pkt_rate_low) *
1489	(priv->rx_usecs_high - priv->rx_usecs_low) /
1490	(pkt_rate_high - pkt_rate_low) +
1491	priv->rx_usecs_low;
1492	} else {
1493	moder_time = priv->rx_usecs_low;
1494	}
1495
1496	cq = priv->rx_cq[ring];
1497	if (moder_time != priv->last_moder_time[ring] ||
1498	cq->moder_cnt != priv->rx_frames) {
1499	priv->last_moder_time[ring] = moder_time;
1500	cq->moder_time = moder_time;
1501	cq->moder_cnt = priv->rx_frames;
1502	err = mlx4_en_set_cq_moder(priv, cq);
1503	if (err)
1504	en_err(priv, "Failed modifying moderation for cq:%d\n",
1505	ring);
1506	}
1507	priv->last_moder_packets[ring] = rx_packets;
1508	priv->last_moder_bytes[ring] = rx_bytes;
1509	}
1510
1511	priv->last_moder_jiffies = jiffies;
1512	}
1513
1514	static void mlx4_en_do_get_stats(struct work_struct *work)
1515	{
1516	struct delayed_work *delay = to_delayed_work(work);
1517	struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1518	stats_task);
1519	struct mlx4_en_dev *mdev = priv->mdev;
1520	int err;
1521
1522	mutex_lock(&mdev->state_lock);
1523	if (mdev->device_up) {
1524	if (priv->port_up) {
1525	err = mlx4_en_DUMP_ETH_STATS(mdev, port: priv->port, reset: 0);
1526	if (err)
1527	en_dbg(HW, priv, "Could not update stats\n");
1528
1529	mlx4_en_auto_moderation(priv);
1530	}
1531
1532	queue_delayed_work(wq: mdev->workqueue, dwork: &priv->stats_task, STATS_DELAY);
1533	}
1534	if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1535	mlx4_en_do_set_mac(priv, new_mac: priv->current_mac);
1536	mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1537	}
1538	mutex_unlock(lock: &mdev->state_lock);
1539	}
1540
1541	/* mlx4_en_service_task - Run service task for tasks that needed to be done
1542	* periodically
1543	*/
1544	static void mlx4_en_service_task(struct work_struct *work)
1545	{
1546	struct delayed_work *delay = to_delayed_work(work);
1547	struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1548	service_task);
1549	struct mlx4_en_dev *mdev = priv->mdev;
1550
1551	mutex_lock(&mdev->state_lock);
1552	if (mdev->device_up) {
1553	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1554	mlx4_en_ptp_overflow_check(mdev);
1555
1556	mlx4_en_recover_from_oom(priv);
1557	queue_delayed_work(wq: mdev->workqueue, dwork: &priv->service_task,
1558	SERVICE_TASK_DELAY);
1559	}
1560	mutex_unlock(lock: &mdev->state_lock);
1561	}
1562
1563	static void mlx4_en_linkstate(struct mlx4_en_priv *priv)
1564	{
1565	struct mlx4_en_port_state *port_state = &priv->port_state;
1566	struct mlx4_en_dev *mdev = priv->mdev;
1567	struct net_device *dev = priv->dev;
1568	bool up;
1569
1570	if (mlx4_en_QUERY_PORT(mdev, port: priv->port))
1571	port_state->link_state = MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN;
1572
1573	up = port_state->link_state == MLX4_PORT_STATE_DEV_EVENT_PORT_UP;
1574	if (up == netif_carrier_ok(dev))
1575	netif_carrier_event(dev);
1576	if (!up) {
1577	en_info(priv, "Link Down\n");
1578	netif_carrier_off(dev);
1579	} else {
1580	en_info(priv, "Link Up\n");
1581	netif_carrier_on(dev);
1582	}
1583	}
1584
1585	static void mlx4_en_linkstate_work(struct work_struct *work)
1586	{
1587	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1588	linkstate_task);
1589	struct mlx4_en_dev *mdev = priv->mdev;
1590
1591	mutex_lock(&mdev->state_lock);
1592	mlx4_en_linkstate(priv);
1593	mutex_unlock(lock: &mdev->state_lock);
1594	}
1595
1596	static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1597	{
1598	struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1599	int numa_node = priv->mdev->dev->numa_node;
1600
1601	if (!zalloc_cpumask_var(mask: &ring->affinity_mask, GFP_KERNEL))
1602	return -ENOMEM;
1603
1604	cpumask_set_cpu(cpu: cpumask_local_spread(i: ring_idx, node: numa_node),
1605	dstp: ring->affinity_mask);
1606	return 0;
1607	}
1608
1609	static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1610	{
1611	free_cpumask_var(mask: priv->rx_ring[ring_idx]->affinity_mask);
1612	}
1613
1614	static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1615	int tx_ring_idx)
1616	{
1617	struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1618	int rr_index = tx_ring_idx;
1619
1620	tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1621	tx_ring->recycle_ring = priv->rx_ring[rr_index];
1622	en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1623	TX_XDP, tx_ring_idx, rr_index);
1624	}
1625
1626	int mlx4_en_start_port(struct net_device *dev)
1627	{
1628	struct mlx4_en_priv *priv = netdev_priv(dev);
1629	struct mlx4_en_dev *mdev = priv->mdev;
1630	struct mlx4_en_cq *cq;
1631	struct mlx4_en_tx_ring *tx_ring;
1632	int rx_index = 0;
1633	int err = 0;
1634	int i, t;
1635	int j;
1636	u8 mc_list[16] = {0};
1637
1638	if (priv->port_up) {
1639	en_dbg(DRV, priv, "start port called while port already up\n");
1640	return 0;
1641	}
1642
1643	INIT_LIST_HEAD(list: &priv->mc_list);
1644	INIT_LIST_HEAD(list: &priv->curr_list);
1645	INIT_LIST_HEAD(list: &priv->ethtool_list);
1646	memset(&priv->ethtool_rules[0], 0,
1647	sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1648
1649	/* Calculate Rx buf size */
1650	dev->mtu = min(dev->mtu, priv->max_mtu);
1651	mlx4_en_calc_rx_buf(dev);
1652	en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1653
1654	/* Configure rx cq's and rings */
1655	err = mlx4_en_activate_rx_rings(priv);
1656	if (err) {
1657	en_err(priv, "Failed to activate RX rings\n");
1658	return err;
1659	}
1660	for (i = 0; i < priv->rx_ring_num; i++) {
1661	cq = priv->rx_cq[i];
1662
1663	err = mlx4_en_init_affinity_hint(priv, ring_idx: i);
1664	if (err) {
1665	en_err(priv, "Failed preparing IRQ affinity hint\n");
1666	goto cq_err;
1667	}
1668
1669	err = mlx4_en_activate_cq(priv, cq, cq_idx: i);
1670	if (err) {
1671	en_err(priv, "Failed activating Rx CQ\n");
1672	mlx4_en_free_affinity_hint(priv, ring_idx: i);
1673	goto cq_err;
1674	}
1675
1676	for (j = 0; j < cq->size; j++) {
1677	struct mlx4_cqe *cqe = NULL;
1678
1679	cqe = mlx4_en_get_cqe(buf: cq->buf, idx: j, cqe_sz: priv->cqe_size) +
1680	priv->cqe_factor;
1681	cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1682	}
1683
1684	err = mlx4_en_set_cq_moder(priv, cq);
1685	if (err) {
1686	en_err(priv, "Failed setting cq moderation parameters\n");
1687	mlx4_en_deactivate_cq(priv, cq);
1688	mlx4_en_free_affinity_hint(priv, ring_idx: i);
1689	goto cq_err;
1690	}
1691	mlx4_en_arm_cq(priv, cq);
1692	priv->rx_ring[i]->cqn = cq->mcq.cqn;
1693	++rx_index;
1694	}
1695
1696	/* Set qp number */
1697	en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1698	err = mlx4_en_get_qp(priv);
1699	if (err) {
1700	en_err(priv, "Failed getting eth qp\n");
1701	goto cq_err;
1702	}
1703	mdev->mac_removed[priv->port] = 0;
1704
1705	priv->counter_index =
1706	mlx4_get_default_counter_index(dev: mdev->dev, port: priv->port);
1707
1708	err = mlx4_en_config_rss_steer(priv);
1709	if (err) {
1710	en_err(priv, "Failed configuring rss steering\n");
1711	goto mac_err;
1712	}
1713
1714	err = mlx4_en_create_drop_qp(priv);
1715	if (err)
1716	goto rss_err;
1717
1718	/* Configure tx cq's and rings */
1719	for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1720	u8 num_tx_rings_p_up = t == TX ?
1721	priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1722
1723	for (i = 0; i < priv->tx_ring_num[t]; i++) {
1724	/* Configure cq */
1725	cq = priv->tx_cq[t][i];
1726	err = mlx4_en_activate_cq(priv, cq, cq_idx: i);
1727	if (err) {
1728	en_err(priv, "Failed allocating Tx CQ\n");
1729	goto tx_err;
1730	}
1731	err = mlx4_en_set_cq_moder(priv, cq);
1732	if (err) {
1733	en_err(priv, "Failed setting cq moderation parameters\n");
1734	mlx4_en_deactivate_cq(priv, cq);
1735	goto tx_err;
1736	}
1737	en_dbg(DRV, priv,
1738	"Resetting index of collapsed CQ:%d to -1\n", i);
1739	cq->buf->wqe_index = cpu_to_be16(0xffff);
1740
1741	/* Configure ring */
1742	tx_ring = priv->tx_ring[t][i];
1743	err = mlx4_en_activate_tx_ring(priv, ring: tx_ring,
1744	cq: cq->mcq.cqn,
1745	user_prio: i / num_tx_rings_p_up);
1746	if (err) {
1747	en_err(priv, "Failed allocating Tx ring\n");
1748	mlx4_en_deactivate_cq(priv, cq);
1749	goto tx_err;
1750	}
1751	clear_bit(nr: MLX4_EN_TX_RING_STATE_RECOVERING, addr: &tx_ring->state);
1752	if (t != TX_XDP) {
1753	tx_ring->tx_queue = netdev_get_tx_queue(dev, index: i);
1754	tx_ring->recycle_ring = NULL;
1755
1756	/* Arm CQ for TX completions */
1757	mlx4_en_arm_cq(priv, cq);
1758
1759	} else {
1760	mlx4_en_init_tx_xdp_ring_descs(priv, ring: tx_ring);
1761	mlx4_en_init_recycle_ring(priv, tx_ring_idx: i);
1762	/* XDP TX CQ should never be armed */
1763	}
1764
1765	/* Set initial ownership of all Tx TXBBs to SW (1) */
1766	for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1767	*((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1768	}
1769	}
1770
1771	/* Configure port */
1772	err = mlx4_SET_PORT_general(dev: mdev->dev, port: priv->port,
1773	mtu: priv->rx_skb_size + ETH_FCS_LEN,
1774	pptx: priv->prof->tx_pause,
1775	pfctx: priv->prof->tx_ppp,
1776	pprx: priv->prof->rx_pause,
1777	pfcrx: priv->prof->rx_ppp);
1778	if (err) {
1779	en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1780	priv->port, err);
1781	goto tx_err;
1782	}
1783
1784	err = mlx4_SET_PORT_user_mtu(dev: mdev->dev, port: priv->port, user_mtu: dev->mtu);
1785	if (err) {
1786	en_err(priv, "Failed to pass user MTU(%d) to Firmware for port %d, with error %d\n",
1787	dev->mtu, priv->port, err);
1788	goto tx_err;
1789	}
1790
1791	/* Set default qp number */
1792	err = mlx4_SET_PORT_qpn_calc(dev: mdev->dev, port: priv->port, base_qpn: priv->base_qpn, promisc: 0);
1793	if (err) {
1794	en_err(priv, "Failed setting default qp numbers\n");
1795	goto tx_err;
1796	}
1797
1798	if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1799	err = mlx4_SET_PORT_VXLAN(dev: mdev->dev, port: priv->port, steering: VXLAN_STEER_BY_OUTER_MAC, enable: 1);
1800	if (err) {
1801	en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1802	err);
1803	goto tx_err;
1804	}
1805	}
1806
1807	/* Init port */
1808	en_dbg(HW, priv, "Initializing port\n");
1809	err = mlx4_INIT_PORT(dev: mdev->dev, port: priv->port);
1810	if (err) {
1811	en_err(priv, "Failed Initializing port\n");
1812	goto tx_err;
1813	}
1814
1815	/* Set Unicast and VXLAN steering rules */
1816	if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1817	mlx4_en_set_rss_steer_rules(priv))
1818	mlx4_warn(mdev, "Failed setting steering rules\n");
1819
1820	/* Attach rx QP to bradcast address */
1821	eth_broadcast_addr(addr: &mc_list[10]);
1822	mc_list[5] = priv->port; /* needed for B0 steering support */
1823	if (mlx4_multicast_attach(dev: mdev->dev, qp: priv->rss_map.indir_qp, gid: mc_list,
1824	port: priv->port, block_mcast_loopback: 0, protocol: MLX4_PROT_ETH,
1825	reg_id: &priv->broadcast_id))
1826	mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1827
1828	/* Must redo promiscuous mode setup. */
1829	priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1830
1831	/* Schedule multicast task to populate multicast list */
1832	queue_work(wq: mdev->workqueue, work: &priv->rx_mode_task);
1833
1834	if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1835	udp_tunnel_nic_reset_ntf(dev);
1836
1837	priv->port_up = true;
1838
1839	/* Process all completions if exist to prevent
1840	* the queues freezing if they are full
1841	*/
1842	for (i = 0; i < priv->rx_ring_num; i++) {
1843	local_bh_disable();
1844	napi_schedule(n: &priv->rx_cq[i]->napi);
1845	local_bh_enable();
1846	}
1847
1848	clear_bit(nr: MLX4_EN_STATE_FLAG_RESTARTING, addr: &priv->state);
1849	netif_tx_start_all_queues(dev);
1850	netif_device_attach(dev);
1851
1852	return 0;
1853
1854	tx_err:
1855	if (t == MLX4_EN_NUM_TX_TYPES) {
1856	t--;
1857	i = priv->tx_ring_num[t];
1858	}
1859	while (t >= 0) {
1860	while (i--) {
1861	mlx4_en_deactivate_tx_ring(priv, ring: priv->tx_ring[t][i]);
1862	mlx4_en_deactivate_cq(priv, cq: priv->tx_cq[t][i]);
1863	}
1864	if (!t--)
1865	break;
1866	i = priv->tx_ring_num[t];
1867	}
1868	mlx4_en_destroy_drop_qp(priv);
1869	rss_err:
1870	mlx4_en_release_rss_steer(priv);
1871	mac_err:
1872	mlx4_en_put_qp(priv);
1873	cq_err:
1874	while (rx_index--) {
1875	mlx4_en_deactivate_cq(priv, cq: priv->rx_cq[rx_index]);
1876	mlx4_en_free_affinity_hint(priv, ring_idx: rx_index);
1877	}
1878	for (i = 0; i < priv->rx_ring_num; i++)
1879	mlx4_en_deactivate_rx_ring(priv, ring: priv->rx_ring[i]);
1880
1881	return err; /* need to close devices */
1882	}
1883
1884
1885	void mlx4_en_stop_port(struct net_device *dev, int detach)
1886	{
1887	struct mlx4_en_priv *priv = netdev_priv(dev);
1888	struct mlx4_en_dev *mdev = priv->mdev;
1889	struct mlx4_en_mc_list *mclist, *tmp;
1890	struct ethtool_flow_id *flow, *tmp_flow;
1891	int i, t;
1892	u8 mc_list[16] = {0};
1893
1894	if (!priv->port_up) {
1895	en_dbg(DRV, priv, "stop port called while port already down\n");
1896	return;
1897	}
1898
1899	/* close port*/
1900	mlx4_CLOSE_PORT(dev: mdev->dev, port: priv->port);
1901
1902	/* Synchronize with tx routine */
1903	netif_tx_lock_bh(dev);
1904	if (detach)
1905	netif_device_detach(dev);
1906	netif_tx_stop_all_queues(dev);
1907	netif_tx_unlock_bh(dev);
1908
1909	netif_tx_disable(dev);
1910
1911	spin_lock_bh(lock: &priv->stats_lock);
1912	mlx4_en_fold_software_stats(dev);
1913	/* Set port as not active */
1914	priv->port_up = false;
1915	spin_unlock_bh(lock: &priv->stats_lock);
1916
1917	priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1918
1919	/* Promsicuous mode */
1920	if (mdev->dev->caps.steering_mode ==
1921	MLX4_STEERING_MODE_DEVICE_MANAGED) {
1922	priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1923	MLX4_EN_FLAG_MC_PROMISC);
1924	mlx4_flow_steer_promisc_remove(dev: mdev->dev,
1925	port: priv->port,
1926	mode: MLX4_FS_ALL_DEFAULT);
1927	mlx4_flow_steer_promisc_remove(dev: mdev->dev,
1928	port: priv->port,
1929	mode: MLX4_FS_MC_DEFAULT);
1930	} else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1931	priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1932
1933	/* Disable promiscouos mode */
1934	mlx4_unicast_promisc_remove(dev: mdev->dev, qpn: priv->base_qpn,
1935	port: priv->port);
1936
1937	/* Disable Multicast promisc */
1938	if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1939	mlx4_multicast_promisc_remove(dev: mdev->dev, qpn: priv->base_qpn,
1940	port: priv->port);
1941	priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1942	}
1943	}
1944
1945	/* Detach All multicasts */
1946	eth_broadcast_addr(addr: &mc_list[10]);
1947	mc_list[5] = priv->port; /* needed for B0 steering support */
1948	mlx4_multicast_detach(dev: mdev->dev, qp: priv->rss_map.indir_qp, gid: mc_list,
1949	protocol: MLX4_PROT_ETH, reg_id: priv->broadcast_id);
1950	list_for_each_entry(mclist, &priv->curr_list, list) {
1951	memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1952	mc_list[5] = priv->port;
1953	mlx4_multicast_detach(dev: mdev->dev, qp: priv->rss_map.indir_qp,
1954	gid: mc_list, protocol: MLX4_PROT_ETH, reg_id: mclist->reg_id);
1955	if (mclist->tunnel_reg_id)
1956	mlx4_flow_detach(dev: mdev->dev, reg_id: mclist->tunnel_reg_id);
1957	}
1958	mlx4_en_clear_list(dev);
1959	list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1960	list_del(entry: &mclist->list);
1961	kfree(objp: mclist);
1962	}
1963
1964	/* Flush multicast filter */
1965	mlx4_SET_MCAST_FLTR(dev: mdev->dev, port: priv->port, mac: 0, clear: 1, mode: MLX4_MCAST_CONFIG);
1966
1967	/* Remove flow steering rules for the port*/
1968	if (mdev->dev->caps.steering_mode ==
1969	MLX4_STEERING_MODE_DEVICE_MANAGED) {
1970	ASSERT_RTNL();
1971	list_for_each_entry_safe(flow, tmp_flow,
1972	&priv->ethtool_list, list) {
1973	mlx4_flow_detach(dev: mdev->dev, reg_id: flow->id);
1974	list_del(entry: &flow->list);
1975	}
1976	}
1977
1978	mlx4_en_destroy_drop_qp(priv);
1979
1980	/* Free TX Rings */
1981	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1982	for (i = 0; i < priv->tx_ring_num[t]; i++) {
1983	mlx4_en_deactivate_tx_ring(priv, ring: priv->tx_ring[t][i]);
1984	mlx4_en_deactivate_cq(priv, cq: priv->tx_cq[t][i]);
1985	}
1986	}
1987	msleep(msecs: 10);
1988
1989	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1990	for (i = 0; i < priv->tx_ring_num[t]; i++)
1991	mlx4_en_free_tx_buf(dev, ring: priv->tx_ring[t][i]);
1992
1993	if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1994	mlx4_en_delete_rss_steer_rules(priv);
1995
1996	/* Free RSS qps */
1997	mlx4_en_release_rss_steer(priv);
1998
1999	/* Unregister Mac address for the port */
2000	mlx4_en_put_qp(priv);
2001	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
2002	mdev->mac_removed[priv->port] = 1;
2003
2004	/* Free RX Rings */
2005	for (i = 0; i < priv->rx_ring_num; i++) {
2006	struct mlx4_en_cq *cq = priv->rx_cq[i];
2007
2008	napi_synchronize(n: &cq->napi);
2009	mlx4_en_deactivate_rx_ring(priv, ring: priv->rx_ring[i]);
2010	mlx4_en_deactivate_cq(priv, cq);
2011
2012	mlx4_en_free_affinity_hint(priv, ring_idx: i);
2013	}
2014	}
2015
2016	static void mlx4_en_restart(struct work_struct *work)
2017	{
2018	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2019	restart_task);
2020	struct mlx4_en_dev *mdev = priv->mdev;
2021	struct net_device *dev = priv->dev;
2022
2023	en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
2024
2025	rtnl_lock();
2026	mutex_lock(&mdev->state_lock);
2027	if (priv->port_up) {
2028	mlx4_en_stop_port(dev, detach: 1);
2029	if (mlx4_en_start_port(dev))
2030	en_err(priv, "Failed restarting port %d\n", priv->port);
2031	}
2032	mutex_unlock(lock: &mdev->state_lock);
2033	rtnl_unlock();
2034	}
2035
2036	static void mlx4_en_clear_stats(struct net_device *dev)
2037	{
2038	struct mlx4_en_priv *priv = netdev_priv(dev);
2039	struct mlx4_en_dev *mdev = priv->mdev;
2040	struct mlx4_en_tx_ring **tx_ring;
2041	int i;
2042
2043	if (!mlx4_is_slave(dev: mdev->dev))
2044	if (mlx4_en_DUMP_ETH_STATS(mdev, port: priv->port, reset: 1))
2045	en_dbg(HW, priv, "Failed dumping statistics\n");
2046
2047	memset(&priv->pkstats, 0, sizeof(priv->pkstats));
2048	memset(&priv->port_stats, 0, sizeof(priv->port_stats));
2049	memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
2050	memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
2051	memset(&priv->rx_priority_flowstats, 0,
2052	sizeof(priv->rx_priority_flowstats));
2053	memset(&priv->tx_priority_flowstats, 0,
2054	sizeof(priv->tx_priority_flowstats));
2055	memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
2056
2057	tx_ring = priv->tx_ring[TX];
2058	for (i = 0; i < priv->tx_ring_num[TX]; i++) {
2059	tx_ring[i]->bytes = 0;
2060	tx_ring[i]->packets = 0;
2061	tx_ring[i]->tx_csum = 0;
2062	tx_ring[i]->tx_dropped = 0;
2063	tx_ring[i]->queue_stopped = 0;
2064	tx_ring[i]->wake_queue = 0;
2065	tx_ring[i]->tso_packets = 0;
2066	tx_ring[i]->xmit_more = 0;
2067	}
2068	for (i = 0; i < priv->rx_ring_num; i++) {
2069	priv->rx_ring[i]->bytes = 0;
2070	priv->rx_ring[i]->packets = 0;
2071	priv->rx_ring[i]->csum_ok = 0;
2072	priv->rx_ring[i]->csum_none = 0;
2073	priv->rx_ring[i]->csum_complete = 0;
2074	}
2075	}
2076
2077	static int mlx4_en_open(struct net_device *dev)
2078	{
2079	struct mlx4_en_priv *priv = netdev_priv(dev);
2080	struct mlx4_en_dev *mdev = priv->mdev;
2081	int err = 0;
2082
2083	mutex_lock(&mdev->state_lock);
2084
2085	if (!mdev->device_up) {
2086	en_err(priv, "Cannot open - device down/disabled\n");
2087	err = -EBUSY;
2088	goto out;
2089	}
2090
2091	/* Reset HW statistics and SW counters */
2092	mlx4_en_clear_stats(dev);
2093
2094	err = mlx4_en_start_port(dev);
2095	if (err) {
2096	en_err(priv, "Failed starting port:%d\n", priv->port);
2097	goto out;
2098	}
2099	mlx4_en_linkstate(priv);
2100	out:
2101	mutex_unlock(lock: &mdev->state_lock);
2102	return err;
2103	}
2104
2105
2106	static int mlx4_en_close(struct net_device *dev)
2107	{
2108	struct mlx4_en_priv *priv = netdev_priv(dev);
2109	struct mlx4_en_dev *mdev = priv->mdev;
2110
2111	en_dbg(IFDOWN, priv, "Close port called\n");
2112
2113	mutex_lock(&mdev->state_lock);
2114
2115	mlx4_en_stop_port(dev, detach: 0);
2116	netif_carrier_off(dev);
2117
2118	mutex_unlock(lock: &mdev->state_lock);
2119	return 0;
2120	}
2121
2122	static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2123	{
2124	int i, t;
2125
2126	#ifdef CONFIG_RFS_ACCEL
2127	priv->dev->rx_cpu_rmap = NULL;
2128	#endif
2129
2130	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2131	for (i = 0; i < priv->tx_ring_num[t]; i++) {
2132	if (priv->tx_ring[t] && priv->tx_ring[t][i])
2133	mlx4_en_destroy_tx_ring(priv,
2134	pring: &priv->tx_ring[t][i]);
2135	if (priv->tx_cq[t] && priv->tx_cq[t][i])
2136	mlx4_en_destroy_cq(priv, pcq: &priv->tx_cq[t][i]);
2137	}
2138	kfree(objp: priv->tx_ring[t]);
2139	kfree(objp: priv->tx_cq[t]);
2140	}
2141
2142	for (i = 0; i < priv->rx_ring_num; i++) {
2143	if (priv->rx_ring[i])
2144	mlx4_en_destroy_rx_ring(priv, pring: &priv->rx_ring[i],
2145	size: priv->prof->rx_ring_size, stride: priv->stride);
2146	if (priv->rx_cq[i])
2147	mlx4_en_destroy_cq(priv, pcq: &priv->rx_cq[i]);
2148	}
2149
2150	}
2151
2152	static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2153	{
2154	struct mlx4_en_port_profile *prof = priv->prof;
2155	int i, t;
2156	int node;
2157
2158	/* Create tx Rings */
2159	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2160	for (i = 0; i < priv->tx_ring_num[t]; i++) {
2161	node = cpu_to_node(cpu: i % num_online_cpus());
2162	if (mlx4_en_create_cq(priv, pcq: &priv->tx_cq[t][i],
2163	entries: prof->tx_ring_size, ring: i, mode: t, node))
2164	goto err;
2165
2166	if (mlx4_en_create_tx_ring(priv, pring: &priv->tx_ring[t][i],
2167	size: prof->tx_ring_size,
2168	TXBB_SIZE, node, queue_index: i))
2169	goto err;
2170	}
2171	}
2172
2173	/* Create rx Rings */
2174	for (i = 0; i < priv->rx_ring_num; i++) {
2175	node = cpu_to_node(cpu: i % num_online_cpus());
2176	if (mlx4_en_create_cq(priv, pcq: &priv->rx_cq[i],
2177	entries: prof->rx_ring_size, ring: i, mode: RX, node))
2178	goto err;
2179
2180	if (mlx4_en_create_rx_ring(priv, pring: &priv->rx_ring[i],
2181	size: prof->rx_ring_size, stride: priv->stride,
2182	node, queue_index: i))
2183	goto err;
2184
2185	}
2186
2187	#ifdef CONFIG_RFS_ACCEL
2188	priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(dev: priv->mdev->dev, port: priv->port);
2189	#endif
2190
2191	return 0;
2192
2193	err:
2194	en_err(priv, "Failed to allocate NIC resources\n");
2195	for (i = 0; i < priv->rx_ring_num; i++) {
2196	if (priv->rx_ring[i])
2197	mlx4_en_destroy_rx_ring(priv, pring: &priv->rx_ring[i],
2198	size: prof->rx_ring_size,
2199	stride: priv->stride);
2200	if (priv->rx_cq[i])
2201	mlx4_en_destroy_cq(priv, pcq: &priv->rx_cq[i]);
2202	}
2203	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2204	for (i = 0; i < priv->tx_ring_num[t]; i++) {
2205	if (priv->tx_ring[t][i])
2206	mlx4_en_destroy_tx_ring(priv,
2207	pring: &priv->tx_ring[t][i]);
2208	if (priv->tx_cq[t][i])
2209	mlx4_en_destroy_cq(priv, pcq: &priv->tx_cq[t][i]);
2210	}
2211	}
2212	return -ENOMEM;
2213	}
2214
2215
2216	static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2217	struct mlx4_en_priv *src,
2218	struct mlx4_en_port_profile *prof)
2219	{
2220	int t;
2221
2222	memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2223	sizeof(dst->hwtstamp_config));
2224	dst->num_tx_rings_p_up = prof->num_tx_rings_p_up;
2225	dst->rx_ring_num = prof->rx_ring_num;
2226	dst->flags = prof->flags;
2227	dst->mdev = src->mdev;
2228	dst->port = src->port;
2229	dst->dev = src->dev;
2230	dst->prof = prof;
2231	dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2232	DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2233
2234	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2235	dst->tx_ring_num[t] = prof->tx_ring_num[t];
2236	if (!dst->tx_ring_num[t])
2237	continue;
2238
2239	dst->tx_ring[t] = kcalloc(MAX_TX_RINGS,
2240	size: sizeof(struct mlx4_en_tx_ring *),
2241	GFP_KERNEL);
2242	if (!dst->tx_ring[t])
2243	goto err_free_tx;
2244
2245	dst->tx_cq[t] = kcalloc(MAX_TX_RINGS,
2246	size: sizeof(struct mlx4_en_cq *),
2247	GFP_KERNEL);
2248	if (!dst->tx_cq[t]) {
2249	kfree(objp: dst->tx_ring[t]);
2250	goto err_free_tx;
2251	}
2252	}
2253
2254	return 0;
2255
2256	err_free_tx:
2257	while (t--) {
2258	kfree(objp: dst->tx_ring[t]);
2259	kfree(objp: dst->tx_cq[t]);
2260	}
2261	return -ENOMEM;
2262	}
2263
2264	static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2265	struct mlx4_en_priv *src)
2266	{
2267	int t;
2268	memcpy(dst->rx_ring, src->rx_ring,
2269	sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2270	memcpy(dst->rx_cq, src->rx_cq,
2271	sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2272	memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2273	sizeof(dst->hwtstamp_config));
2274	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2275	dst->tx_ring_num[t] = src->tx_ring_num[t];
2276	dst->tx_ring[t] = src->tx_ring[t];
2277	dst->tx_cq[t] = src->tx_cq[t];
2278	}
2279	dst->num_tx_rings_p_up = src->num_tx_rings_p_up;
2280	dst->rx_ring_num = src->rx_ring_num;
2281	memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2282	}
2283
2284	int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2285	struct mlx4_en_priv *tmp,
2286	struct mlx4_en_port_profile *prof,
2287	bool carry_xdp_prog)
2288	{
2289	struct bpf_prog *xdp_prog;
2290	int i, t, ret;
2291
2292	ret = mlx4_en_copy_priv(dst: tmp, src: priv, prof);
2293	if (ret) {
2294	en_warn(priv, "%s: mlx4_en_copy_priv() failed, return\n",
2295	__func__);
2296	return ret;
2297	}
2298
2299	if (mlx4_en_alloc_resources(priv: tmp)) {
2300	en_warn(priv,
2301	"%s: Resource allocation failed, using previous configuration\n",
2302	__func__);
2303	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2304	kfree(objp: tmp->tx_ring[t]);
2305	kfree(objp: tmp->tx_cq[t]);
2306	}
2307	return -ENOMEM;
2308	}
2309
2310	/* All rx_rings has the same xdp_prog. Pick the first one. */
2311	xdp_prog = rcu_dereference_protected(
2312	priv->rx_ring[0]->xdp_prog,
2313	lockdep_is_held(&priv->mdev->state_lock));
2314
2315	if (xdp_prog && carry_xdp_prog) {
2316	bpf_prog_add(prog: xdp_prog, i: tmp->rx_ring_num);
2317	for (i = 0; i < tmp->rx_ring_num; i++)
2318	rcu_assign_pointer(tmp->rx_ring[i]->xdp_prog,
2319	xdp_prog);
2320	}
2321
2322	return 0;
2323	}
2324
2325	void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2326	struct mlx4_en_priv *tmp)
2327	{
2328	mlx4_en_free_resources(priv);
2329	mlx4_en_update_priv(dst: priv, src: tmp);
2330	}
2331
2332	void mlx4_en_destroy_netdev(struct net_device *dev)
2333	{
2334	struct mlx4_en_priv *priv = netdev_priv(dev);
2335	struct mlx4_en_dev *mdev = priv->mdev;
2336
2337	en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2338
2339	/* Unregister device - this will close the port if it was up */
2340	if (priv->registered)
2341	unregister_netdev(dev);
2342
2343	if (priv->allocated)
2344	mlx4_free_hwq_res(mdev: mdev->dev, wqres: &priv->res, MLX4_EN_PAGE_SIZE);
2345
2346	cancel_delayed_work(dwork: &priv->stats_task);
2347	cancel_delayed_work(dwork: &priv->service_task);
2348	/* flush any pending task for this netdev */
2349	flush_workqueue(mdev->workqueue);
2350
2351	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2352	mlx4_en_remove_timestamp(mdev);
2353
2354	/* Detach the netdev so tasks would not attempt to access it */
2355	mutex_lock(&mdev->state_lock);
2356	mdev->pndev[priv->port] = NULL;
2357	mdev->upper[priv->port] = NULL;
2358
2359	#ifdef CONFIG_RFS_ACCEL
2360	mlx4_en_cleanup_filters(priv);
2361	#endif
2362
2363	mlx4_en_free_resources(priv);
2364	mutex_unlock(lock: &mdev->state_lock);
2365
2366	free_netdev(dev);
2367	}
2368
2369	static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2370	{
2371	struct mlx4_en_priv *priv = netdev_priv(dev);
2372
2373	if (mtu > MLX4_EN_MAX_XDP_MTU) {
2374	en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2375	mtu, MLX4_EN_MAX_XDP_MTU);
2376	return false;
2377	}
2378
2379	return true;
2380	}
2381
2382	static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2383	{
2384	struct mlx4_en_priv *priv = netdev_priv(dev);
2385	struct mlx4_en_dev *mdev = priv->mdev;
2386	int err = 0;
2387
2388	en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2389	dev->mtu, new_mtu);
2390
2391	if (priv->tx_ring_num[TX_XDP] &&
2392	!mlx4_en_check_xdp_mtu(dev, mtu: new_mtu))
2393	return -EOPNOTSUPP;
2394
2395	dev->mtu = new_mtu;
2396
2397	if (netif_running(dev)) {
2398	mutex_lock(&mdev->state_lock);
2399	if (!mdev->device_up) {
2400	/* NIC is probably restarting - let restart task reset
2401	* the port */
2402	en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2403	} else {
2404	mlx4_en_stop_port(dev, detach: 1);
2405	err = mlx4_en_start_port(dev);
2406	if (err) {
2407	en_err(priv, "Failed restarting port:%d\n",
2408	priv->port);
2409	if (!test_and_set_bit(nr: MLX4_EN_STATE_FLAG_RESTARTING,
2410	addr: &priv->state))
2411	queue_work(wq: mdev->workqueue, work: &priv->restart_task);
2412	}
2413	}
2414	mutex_unlock(lock: &mdev->state_lock);
2415	}
2416	return 0;
2417	}
2418
2419	static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2420	{
2421	struct mlx4_en_priv *priv = netdev_priv(dev);
2422	struct mlx4_en_dev *mdev = priv->mdev;
2423	struct hwtstamp_config config;
2424
2425	if (copy_from_user(to: &config, from: ifr->ifr_data, n: sizeof(config)))
2426	return -EFAULT;
2427
2428	/* device doesn't support time stamping */
2429	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2430	return -EINVAL;
2431
2432	/* TX HW timestamp */
2433	switch (config.tx_type) {
2434	case HWTSTAMP_TX_OFF:
2435	case HWTSTAMP_TX_ON:
2436	break;
2437	default:
2438	return -ERANGE;
2439	}
2440
2441	/* RX HW timestamp */
2442	switch (config.rx_filter) {
2443	case HWTSTAMP_FILTER_NONE:
2444	break;
2445	case HWTSTAMP_FILTER_ALL:
2446	case HWTSTAMP_FILTER_SOME:
2447	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2448	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2449	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2450	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2451	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2452	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2453	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2454	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2455	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2456	case HWTSTAMP_FILTER_PTP_V2_EVENT:
2457	case HWTSTAMP_FILTER_PTP_V2_SYNC:
2458	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2459	case HWTSTAMP_FILTER_NTP_ALL:
2460	config.rx_filter = HWTSTAMP_FILTER_ALL;
2461	break;
2462	default:
2463	return -ERANGE;
2464	}
2465
2466	if (mlx4_en_reset_config(dev, ts_config: config, new_features: dev->features)) {
2467	config.tx_type = HWTSTAMP_TX_OFF;
2468	config.rx_filter = HWTSTAMP_FILTER_NONE;
2469	}
2470
2471	return copy_to_user(to: ifr->ifr_data, from: &config,
2472	n: sizeof(config)) ? -EFAULT : 0;
2473	}
2474
2475	static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2476	{
2477	struct mlx4_en_priv *priv = netdev_priv(dev);
2478
2479	return copy_to_user(to: ifr->ifr_data, from: &priv->hwtstamp_config,
2480	n: sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2481	}
2482
2483	static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2484	{
2485	switch (cmd) {
2486	case SIOCSHWTSTAMP:
2487	return mlx4_en_hwtstamp_set(dev, ifr);
2488	case SIOCGHWTSTAMP:
2489	return mlx4_en_hwtstamp_get(dev, ifr);
2490	default:
2491	return -EOPNOTSUPP;
2492	}
2493	}
2494
2495	static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2496	netdev_features_t features)
2497	{
2498	struct mlx4_en_priv *en_priv = netdev_priv(dev: netdev);
2499	struct mlx4_en_dev *mdev = en_priv->mdev;
2500
2501	/* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2502	* enable/disable make sure S-TAG flag is always in same state as
2503	* C-TAG.
2504	*/
2505	if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2506	!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2507	features |= NETIF_F_HW_VLAN_STAG_RX;
2508	else
2509	features &= ~NETIF_F_HW_VLAN_STAG_RX;
2510
2511	return features;
2512	}
2513
2514	static int mlx4_en_set_features(struct net_device *netdev,
2515	netdev_features_t features)
2516	{
2517	struct mlx4_en_priv *priv = netdev_priv(dev: netdev);
2518	bool reset = false;
2519	int ret = 0;
2520
2521	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2522	en_info(priv, "Turn %s RX-FCS\n",
2523	(features & NETIF_F_RXFCS) ? "ON" : "OFF");
2524	reset = true;
2525	}
2526
2527	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2528	u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2529
2530	en_info(priv, "Turn %s RX-ALL\n",
2531	ignore_fcs_value ? "ON" : "OFF");
2532	ret = mlx4_SET_PORT_fcs_check(dev: priv->mdev->dev,
2533	port: priv->port, ignore_fcs_value);
2534	if (ret)
2535	return ret;
2536	}
2537
2538	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2539	en_info(priv, "Turn %s RX vlan strip offload\n",
2540	(features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2541	reset = true;
2542	}
2543
2544	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2545	en_info(priv, "Turn %s TX vlan strip offload\n",
2546	(features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2547
2548	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2549	en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2550	(features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2551
2552	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2553	en_info(priv, "Turn %s loopback\n",
2554	(features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2555	mlx4_en_update_loopback_state(dev: netdev, features);
2556	}
2557
2558	if (reset) {
2559	ret = mlx4_en_reset_config(dev: netdev, ts_config: priv->hwtstamp_config,
2560	new_features: features);
2561	if (ret)
2562	return ret;
2563	}
2564
2565	return 0;
2566	}
2567
2568	static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2569	{
2570	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2571	struct mlx4_en_dev *mdev = en_priv->mdev;
2572
2573	return mlx4_set_vf_mac(dev: mdev->dev, port: en_priv->port, vf: queue, mac);
2574	}
2575
2576	static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
2577	__be16 vlan_proto)
2578	{
2579	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2580	struct mlx4_en_dev *mdev = en_priv->mdev;
2581
2582	return mlx4_set_vf_vlan(dev: mdev->dev, port: en_priv->port, vf, vlan, qos,
2583	proto: vlan_proto);
2584	}
2585
2586	static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2587	int max_tx_rate)
2588	{
2589	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2590	struct mlx4_en_dev *mdev = en_priv->mdev;
2591
2592	return mlx4_set_vf_rate(dev: mdev->dev, port: en_priv->port, vf, min_tx_rate,
2593	max_tx_rate);
2594	}
2595
2596	static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2597	{
2598	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2599	struct mlx4_en_dev *mdev = en_priv->mdev;
2600
2601	return mlx4_set_vf_spoofchk(dev: mdev->dev, port: en_priv->port, vf, setting);
2602	}
2603
2604	static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2605	{
2606	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2607	struct mlx4_en_dev *mdev = en_priv->mdev;
2608
2609	return mlx4_get_vf_config(dev: mdev->dev, port: en_priv->port, vf, ivf);
2610	}
2611
2612	static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2613	{
2614	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2615	struct mlx4_en_dev *mdev = en_priv->mdev;
2616
2617	return mlx4_set_vf_link_state(dev: mdev->dev, port: en_priv->port, vf, link_state);
2618	}
2619
2620	static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2621	struct ifla_vf_stats *vf_stats)
2622	{
2623	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2624	struct mlx4_en_dev *mdev = en_priv->mdev;
2625
2626	return mlx4_get_vf_stats(dev: mdev->dev, port: en_priv->port, vf_idx: vf, vf_stats);
2627	}
2628
2629	#define PORT_ID_BYTE_LEN 8
2630	static int mlx4_en_get_phys_port_id(struct net_device *dev,
2631	struct netdev_phys_item_id *ppid)
2632	{
2633	struct mlx4_en_priv *priv = netdev_priv(dev);
2634	struct mlx4_dev *mdev = priv->mdev->dev;
2635	int i;
2636	u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2637
2638	if (!phys_port_id)
2639	return -EOPNOTSUPP;
2640
2641	ppid->id_len = sizeof(phys_port_id);
2642	for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2643	ppid->id[i] = phys_port_id & 0xff;
2644	phys_port_id >>= 8;
2645	}
2646	return 0;
2647	}
2648
2649	static int mlx4_udp_tunnel_sync(struct net_device *dev, unsigned int table)
2650	{
2651	struct mlx4_en_priv *priv = netdev_priv(dev);
2652	struct udp_tunnel_info ti;
2653	int ret;
2654
2655	udp_tunnel_nic_get_port(dev, table, idx: 0, ti: &ti);
2656	priv->vxlan_port = ti.port;
2657
2658	ret = mlx4_config_vxlan_port(dev: priv->mdev->dev, udp_port: priv->vxlan_port);
2659	if (ret)
2660	return ret;
2661
2662	return mlx4_SET_PORT_VXLAN(dev: priv->mdev->dev, port: priv->port,
2663	steering: VXLAN_STEER_BY_OUTER_MAC,
2664	enable: !!priv->vxlan_port);
2665	}
2666
2667	static const struct udp_tunnel_nic_info mlx4_udp_tunnels = {
2668	.sync_table = mlx4_udp_tunnel_sync,
2669	.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
2670	UDP_TUNNEL_NIC_INFO_IPV4_ONLY,
2671	.tables = {
2672	{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
2673	},
2674	};
2675
2676	static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2677	struct net_device *dev,
2678	netdev_features_t features)
2679	{
2680	features = vlan_features_check(skb, features);
2681	features = vxlan_features_check(skb, features);
2682
2683	/* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2684	* support inner IPv6 checksums and segmentation so we need to
2685	* strip that feature if this is an IPv6 encapsulated frame.
2686	*/
2687	if (skb->encapsulation &&
2688	(skb->ip_summed == CHECKSUM_PARTIAL)) {
2689	struct mlx4_en_priv *priv = netdev_priv(dev);
2690
2691	if (!priv->vxlan_port ||
2692	(ip_hdr(skb)->version != 4) ||
2693	(udp_hdr(skb)->dest != priv->vxlan_port))
2694	features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2695	}
2696
2697	return features;
2698	}
2699
2700	static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2701	{
2702	struct mlx4_en_priv *priv = netdev_priv(dev);
2703	struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2704	struct mlx4_update_qp_params params;
2705	int err;
2706
2707	if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2708	return -EOPNOTSUPP;
2709
2710	/* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2711	if (maxrate >> 12) {
2712	params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2713	params.rate_val = maxrate / 1000;
2714	} else if (maxrate) {
2715	params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2716	params.rate_val = maxrate;
2717	} else { /* zero serves to revoke the QP rate-limitation */
2718	params.rate_unit = 0;
2719	params.rate_val = 0;
2720	}
2721
2722	err = mlx4_update_qp(dev: priv->mdev->dev, qpn: tx_ring->qpn, attr: MLX4_UPDATE_QP_RATE_LIMIT,
2723	params: &params);
2724	return err;
2725	}
2726
2727	static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2728	{
2729	struct mlx4_en_priv *priv = netdev_priv(dev);
2730	struct mlx4_en_dev *mdev = priv->mdev;
2731	struct mlx4_en_port_profile new_prof;
2732	struct bpf_prog *old_prog;
2733	struct mlx4_en_priv *tmp;
2734	int tx_changed = 0;
2735	int xdp_ring_num;
2736	int port_up = 0;
2737	int err;
2738	int i;
2739
2740	xdp_ring_num = prog ? priv->rx_ring_num : 0;
2741
2742	/* No need to reconfigure buffers when simply swapping the
2743	* program for a new one.
2744	*/
2745	if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2746	if (prog)
2747	bpf_prog_add(prog, i: priv->rx_ring_num - 1);
2748
2749	mutex_lock(&mdev->state_lock);
2750	for (i = 0; i < priv->rx_ring_num; i++) {
2751	old_prog = rcu_dereference_protected(
2752	priv->rx_ring[i]->xdp_prog,
2753	lockdep_is_held(&mdev->state_lock));
2754	rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2755	if (old_prog)
2756	bpf_prog_put(prog: old_prog);
2757	}
2758	mutex_unlock(lock: &mdev->state_lock);
2759	return 0;
2760	}
2761
2762	if (!mlx4_en_check_xdp_mtu(dev, mtu: dev->mtu))
2763	return -EOPNOTSUPP;
2764
2765	tmp = kzalloc(size: sizeof(*tmp), GFP_KERNEL);
2766	if (!tmp)
2767	return -ENOMEM;
2768
2769	if (prog)
2770	bpf_prog_add(prog, i: priv->rx_ring_num - 1);
2771
2772	mutex_lock(&mdev->state_lock);
2773	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2774	new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2775
2776	if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2777	tx_changed = 1;
2778	new_prof.tx_ring_num[TX] =
2779	MAX_TX_RINGS - ALIGN(xdp_ring_num, priv->prof->num_up);
2780	en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2781	}
2782
2783	err = mlx4_en_try_alloc_resources(priv, tmp, prof: &new_prof, carry_xdp_prog: false);
2784	if (err) {
2785	if (prog)
2786	bpf_prog_sub(prog, i: priv->rx_ring_num - 1);
2787	goto unlock_out;
2788	}
2789
2790	if (priv->port_up) {
2791	port_up = 1;
2792	mlx4_en_stop_port(dev, detach: 1);
2793	}
2794
2795	mlx4_en_safe_replace_resources(priv, tmp);
2796	if (tx_changed)
2797	netif_set_real_num_tx_queues(dev, txq: priv->tx_ring_num[TX]);
2798
2799	for (i = 0; i < priv->rx_ring_num; i++) {
2800	old_prog = rcu_dereference_protected(
2801	priv->rx_ring[i]->xdp_prog,
2802	lockdep_is_held(&mdev->state_lock));
2803	rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2804	if (old_prog)
2805	bpf_prog_put(prog: old_prog);
2806	}
2807
2808	if (port_up) {
2809	err = mlx4_en_start_port(dev);
2810	if (err) {
2811	en_err(priv, "Failed starting port %d for XDP change\n",
2812	priv->port);
2813	if (!test_and_set_bit(nr: MLX4_EN_STATE_FLAG_RESTARTING, addr: &priv->state))
2814	queue_work(wq: mdev->workqueue, work: &priv->restart_task);
2815	}
2816	}
2817
2818	unlock_out:
2819	mutex_unlock(lock: &mdev->state_lock);
2820	kfree(objp: tmp);
2821	return err;
2822	}
2823
2824	static int mlx4_xdp(struct net_device *dev, struct netdev_bpf *xdp)
2825	{
2826	switch (xdp->command) {
2827	case XDP_SETUP_PROG:
2828	return mlx4_xdp_set(dev, prog: xdp->prog);
2829	default:
2830	return -EINVAL;
2831	}
2832	}
2833
2834	static const struct net_device_ops mlx4_netdev_ops = {
2835	.ndo_open = mlx4_en_open,
2836	.ndo_stop = mlx4_en_close,
2837	.ndo_start_xmit = mlx4_en_xmit,
2838	.ndo_select_queue = mlx4_en_select_queue,
2839	.ndo_get_stats64 = mlx4_en_get_stats64,
2840	.ndo_set_rx_mode = mlx4_en_set_rx_mode,
2841	.ndo_set_mac_address = mlx4_en_set_mac,
2842	.ndo_validate_addr = eth_validate_addr,
2843	.ndo_change_mtu = mlx4_en_change_mtu,
2844	.ndo_eth_ioctl = mlx4_en_ioctl,
2845	.ndo_tx_timeout = mlx4_en_tx_timeout,
2846	.ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2847	.ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2848	.ndo_set_features = mlx4_en_set_features,
2849	.ndo_fix_features = mlx4_en_fix_features,
2850	.ndo_setup_tc = __mlx4_en_setup_tc,
2851	#ifdef CONFIG_RFS_ACCEL
2852	.ndo_rx_flow_steer = mlx4_en_filter_rfs,
2853	#endif
2854	.ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2855	.ndo_features_check = mlx4_en_features_check,
2856	.ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
2857	.ndo_bpf = mlx4_xdp,
2858	};
2859
2860	static const struct net_device_ops mlx4_netdev_ops_master = {
2861	.ndo_open = mlx4_en_open,
2862	.ndo_stop = mlx4_en_close,
2863	.ndo_start_xmit = mlx4_en_xmit,
2864	.ndo_select_queue = mlx4_en_select_queue,
2865	.ndo_get_stats64 = mlx4_en_get_stats64,
2866	.ndo_set_rx_mode = mlx4_en_set_rx_mode,
2867	.ndo_set_mac_address = mlx4_en_set_mac,
2868	.ndo_validate_addr = eth_validate_addr,
2869	.ndo_change_mtu = mlx4_en_change_mtu,
2870	.ndo_tx_timeout = mlx4_en_tx_timeout,
2871	.ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2872	.ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2873	.ndo_set_vf_mac = mlx4_en_set_vf_mac,
2874	.ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2875	.ndo_set_vf_rate = mlx4_en_set_vf_rate,
2876	.ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2877	.ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2878	.ndo_get_vf_stats = mlx4_en_get_vf_stats,
2879	.ndo_get_vf_config = mlx4_en_get_vf_config,
2880	.ndo_set_features = mlx4_en_set_features,
2881	.ndo_fix_features = mlx4_en_fix_features,
2882	.ndo_setup_tc = __mlx4_en_setup_tc,
2883	#ifdef CONFIG_RFS_ACCEL
2884	.ndo_rx_flow_steer = mlx4_en_filter_rfs,
2885	#endif
2886	.ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2887	.ndo_features_check = mlx4_en_features_check,
2888	.ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
2889	.ndo_bpf = mlx4_xdp,
2890	};
2891
2892	static const struct xdp_metadata_ops mlx4_xdp_metadata_ops = {
2893	.xmo_rx_timestamp = mlx4_en_xdp_rx_timestamp,
2894	.xmo_rx_hash = mlx4_en_xdp_rx_hash,
2895	};
2896
2897	int mlx4_en_netdev_event(struct notifier_block *this,
2898	unsigned long event, void *ptr)
2899	{
2900	struct net_device *ndev = netdev_notifier_info_to_dev(info: ptr);
2901	u8 port = 0;
2902	struct mlx4_en_dev *mdev;
2903	struct mlx4_dev *dev;
2904	int i, num_eth_ports = 0;
2905	bool do_bond = true;
2906	u8 v2p_port1 = 0;
2907	u8 v2p_port2 = 0;
2908
2909	if (!net_eq(net1: dev_net(dev: ndev), net2: &init_net))
2910	return NOTIFY_DONE;
2911
2912	mdev = container_of(this, struct mlx4_en_dev, netdev_nb);
2913	dev = mdev->dev;
2914
2915	/* Go into this mode only when two network devices set on two ports
2916	* of the same mlx4 device are slaves of the same bonding master
2917	*/
2918	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2919	++num_eth_ports;
2920	if (!port && (mdev->pndev[i] == ndev))
2921	port = i;
2922	mdev->upper[i] = mdev->pndev[i] ?
2923	netdev_master_upper_dev_get(dev: mdev->pndev[i]) : NULL;
2924	/* condition not met: network device is a slave */
2925	if (!mdev->upper[i])
2926	do_bond = false;
2927	if (num_eth_ports < 2)
2928	continue;
2929	/* condition not met: same master */
2930	if (mdev->upper[i] != mdev->upper[i-1])
2931	do_bond = false;
2932	}
2933	/* condition not met: 2 salves */
2934	do_bond = (num_eth_ports == 2) ? do_bond : false;
2935
2936	/* handle only events that come with enough info */
2937	if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2938	return NOTIFY_DONE;
2939
2940	if (do_bond) {
2941	struct netdev_notifier_bonding_info *notifier_info = ptr;
2942	struct netdev_bonding_info *bonding_info =
2943	&notifier_info->bonding_info;
2944
2945	/* required mode 1, 2 or 4 */
2946	if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2947	(bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2948	(bonding_info->master.bond_mode != BOND_MODE_8023AD))
2949	do_bond = false;
2950
2951	/* require exactly 2 slaves */
2952	if (bonding_info->master.num_slaves != 2)
2953	do_bond = false;
2954
2955	/* calc v2p */
2956	if (do_bond) {
2957	if (bonding_info->master.bond_mode ==
2958	BOND_MODE_ACTIVEBACKUP) {
2959	/* in active-backup mode virtual ports are
2960	* mapped to the physical port of the active
2961	* slave */
2962	if (bonding_info->slave.state ==
2963	BOND_STATE_BACKUP) {
2964	if (port == 1) {
2965	v2p_port1 = 2;
2966	v2p_port2 = 2;
2967	} else {
2968	v2p_port1 = 1;
2969	v2p_port2 = 1;
2970	}
2971	} else { /* BOND_STATE_ACTIVE */
2972	if (port == 1) {
2973	v2p_port1 = 1;
2974	v2p_port2 = 1;
2975	} else {
2976	v2p_port1 = 2;
2977	v2p_port2 = 2;
2978	}
2979	}
2980	} else { /* Active-Active */
2981	/* in active-active mode a virtual port is
2982	* mapped to the native physical port if and only
2983	* if the physical port is up */
2984	__s8 link = bonding_info->slave.link;
2985
2986	if (port == 1)
2987	v2p_port2 = 2;
2988	else
2989	v2p_port1 = 1;
2990	if ((link == BOND_LINK_UP) ||
2991	(link == BOND_LINK_FAIL)) {
2992	if (port == 1)
2993	v2p_port1 = 1;
2994	else
2995	v2p_port2 = 2;
2996	} else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2997	if (port == 1)
2998	v2p_port1 = 2;
2999	else
3000	v2p_port2 = 1;
3001	}
3002	}
3003	}
3004	}
3005
3006	mlx4_queue_bond_work(dev, is_bonded: do_bond, v2p_p1: v2p_port1, v2p_p2: v2p_port2);
3007
3008	return NOTIFY_DONE;
3009	}
3010
3011	void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3012	struct mlx4_en_stats_bitmap *stats_bitmap,
3013	u8 rx_ppp, u8 rx_pause,
3014	u8 tx_ppp, u8 tx_pause)
3015	{
3016	int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3017
3018	if (!mlx4_is_slave(dev) &&
3019	(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3020	mutex_lock(&stats_bitmap->mutex);
3021	bitmap_clear(map: stats_bitmap->bitmap, start: last_i, NUM_FLOW_STATS);
3022
3023	if (rx_ppp)
3024	bitmap_set(map: stats_bitmap->bitmap, start: last_i,
3025	NUM_FLOW_PRIORITY_STATS_RX);
3026	last_i += NUM_FLOW_PRIORITY_STATS_RX;
3027
3028	if (rx_pause && !(rx_ppp))
3029	bitmap_set(map: stats_bitmap->bitmap, start: last_i,
3030	NUM_FLOW_STATS_RX);
3031	last_i += NUM_FLOW_STATS_RX;
3032
3033	if (tx_ppp)
3034	bitmap_set(map: stats_bitmap->bitmap, start: last_i,
3035	NUM_FLOW_PRIORITY_STATS_TX);
3036	last_i += NUM_FLOW_PRIORITY_STATS_TX;
3037
3038	if (tx_pause && !(tx_ppp))
3039	bitmap_set(map: stats_bitmap->bitmap, start: last_i,
3040	NUM_FLOW_STATS_TX);
3041	last_i += NUM_FLOW_STATS_TX;
3042
3043	mutex_unlock(lock: &stats_bitmap->mutex);
3044	}
3045	}
3046
3047	void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3048	struct mlx4_en_stats_bitmap *stats_bitmap,
3049	u8 rx_ppp, u8 rx_pause,
3050	u8 tx_ppp, u8 tx_pause)
3051	{
3052	int last_i = 0;
3053
3054	mutex_init(&stats_bitmap->mutex);
3055	bitmap_zero(dst: stats_bitmap->bitmap, NUM_ALL_STATS);
3056
3057	if (mlx4_is_slave(dev)) {
3058	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3059	MLX4_FIND_NETDEV_STAT(rx_packets), nbits: 1);
3060	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3061	MLX4_FIND_NETDEV_STAT(tx_packets), nbits: 1);
3062	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3063	MLX4_FIND_NETDEV_STAT(rx_bytes), nbits: 1);
3064	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3065	MLX4_FIND_NETDEV_STAT(tx_bytes), nbits: 1);
3066	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3067	MLX4_FIND_NETDEV_STAT(rx_dropped), nbits: 1);
3068	bitmap_set(map: stats_bitmap->bitmap, start: last_i +
3069	MLX4_FIND_NETDEV_STAT(tx_dropped), nbits: 1);
3070	} else {
3071	bitmap_set(map: stats_bitmap->bitmap, start: last_i, NUM_MAIN_STATS);
3072	}
3073	last_i += NUM_MAIN_STATS;
3074
3075	bitmap_set(map: stats_bitmap->bitmap, start: last_i, NUM_PORT_STATS);
3076	last_i += NUM_PORT_STATS;
3077
3078	if (mlx4_is_master(dev))
3079	bitmap_set(map: stats_bitmap->bitmap, start: last_i,
3080	NUM_PF_STATS);
3081	last_i += NUM_PF_STATS;
3082
3083	mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3084	rx_ppp, rx_pause,
3085	tx_ppp, tx_pause);
3086	last_i += NUM_FLOW_STATS;
3087
3088	if (!mlx4_is_slave(dev))
3089	bitmap_set(map: stats_bitmap->bitmap, start: last_i, NUM_PKT_STATS);
3090	last_i += NUM_PKT_STATS;
3091
3092	bitmap_set(map: stats_bitmap->bitmap, start: last_i, NUM_XDP_STATS);
3093	last_i += NUM_XDP_STATS;
3094
3095	if (!mlx4_is_slave(dev))
3096	bitmap_set(map: stats_bitmap->bitmap, start: last_i, NUM_PHY_STATS);
3097	last_i += NUM_PHY_STATS;
3098	}
3099
3100	int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3101	struct mlx4_en_port_profile *prof)
3102	{
3103	struct net_device *dev;
3104	struct mlx4_en_priv *priv;
3105	int i, t;
3106	int err;
3107
3108	dev = alloc_etherdev_mqs(sizeof_priv: sizeof(struct mlx4_en_priv),
3109	MAX_TX_RINGS, MAX_RX_RINGS);
3110	if (dev == NULL)
3111	return -ENOMEM;
3112
3113	netif_set_real_num_tx_queues(dev, txq: prof->tx_ring_num[TX]);
3114	netif_set_real_num_rx_queues(dev, rxq: prof->rx_ring_num);
3115
3116	SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3117	dev->dev_port = port - 1;
3118
3119	/*
3120	* Initialize driver private data
3121	*/
3122
3123	priv = netdev_priv(dev);
3124	memset(priv, 0, sizeof(struct mlx4_en_priv));
3125	priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3126	spin_lock_init(&priv->stats_lock);
3127	INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3128	INIT_WORK(&priv->restart_task, mlx4_en_restart);
3129	INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate_work);
3130	INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3131	INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3132	#ifdef CONFIG_RFS_ACCEL
3133	INIT_LIST_HEAD(list: &priv->filters);
3134	spin_lock_init(&priv->filters_lock);
3135	#endif
3136
3137	priv->dev = dev;
3138	priv->mdev = mdev;
3139	priv->ddev = &mdev->pdev->dev;
3140	priv->prof = prof;
3141	priv->port = port;
3142	priv->port_up = false;
3143	priv->flags = prof->flags;
3144	priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3145	priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3146	MLX4_WQE_CTRL_SOLICITED);
3147	priv->num_tx_rings_p_up = mdev->profile.max_num_tx_rings_p_up;
3148	priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3149	netdev_rss_key_fill(buffer: priv->rss_key, len: sizeof(priv->rss_key));
3150
3151	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3152	priv->tx_ring_num[t] = prof->tx_ring_num[t];
3153	if (!priv->tx_ring_num[t])
3154	continue;
3155
3156	priv->tx_ring[t] = kcalloc(MAX_TX_RINGS,
3157	size: sizeof(struct mlx4_en_tx_ring *),
3158	GFP_KERNEL);
3159	if (!priv->tx_ring[t]) {
3160	err = -ENOMEM;
3161	goto out;
3162	}
3163	priv->tx_cq[t] = kcalloc(MAX_TX_RINGS,
3164	size: sizeof(struct mlx4_en_cq *),
3165	GFP_KERNEL);
3166	if (!priv->tx_cq[t]) {
3167	err = -ENOMEM;
3168	goto out;
3169	}
3170	}
3171	priv->rx_ring_num = prof->rx_ring_num;
3172	priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3173	priv->cqe_size = mdev->dev->caps.cqe_size;
3174	priv->mac_index = -1;
3175	priv->msg_enable = MLX4_EN_MSG_LEVEL;
3176	#ifdef CONFIG_MLX4_EN_DCB
3177	if (!mlx4_is_slave(dev: priv->mdev->dev)) {
3178	u8 prio;
3179
3180	for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) {
3181	priv->ets.prio_tc[prio] = prio;
3182	priv->ets.tc_tsa[prio] = IEEE_8021QAZ_TSA_VENDOR;
3183	}
3184
3185	priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3186	DCB_CAP_DCBX_VER_IEEE;
3187	priv->flags |= MLX4_EN_DCB_ENABLED;
3188	priv->cee_config.pfc_state = false;
3189
3190	for (i = 0; i < MLX4_EN_NUM_UP_HIGH; i++)
3191	priv->cee_config.dcb_pfc[i] = pfc_disabled;
3192
3193	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3194	dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3195	} else {
3196	en_info(priv, "enabling only PFC DCB ops\n");
3197	dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3198	}
3199	}
3200	#endif
3201
3202	for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3203	INIT_HLIST_HEAD(&priv->mac_hash[i]);
3204
3205	/* Query for default mac and max mtu */
3206	priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3207
3208	if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3209	MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3210	priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3211
3212	/* Set default MAC */
3213	dev->addr_len = ETH_ALEN;
3214	mlx4_en_u64_to_mac(dev, src_mac: mdev->dev->caps.def_mac[priv->port]);
3215	if (!is_valid_ether_addr(addr: dev->dev_addr)) {
3216	en_err(priv, "Port: %d, invalid mac burned: %pM, quitting\n",
3217	priv->port, dev->dev_addr);
3218	err = -EINVAL;
3219	goto out;
3220	} else if (mlx4_is_slave(dev: priv->mdev->dev) &&
3221	(priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3222	/* Random MAC was assigned in mlx4_slave_cap
3223	* in mlx4_core module
3224	*/
3225	dev->addr_assign_type |= NET_ADDR_RANDOM;
3226	en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3227	}
3228
3229	memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3230
3231	priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3232	DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3233	err = mlx4_en_alloc_resources(priv);
3234	if (err)
3235	goto out;
3236
3237	/* Initialize time stamping config */
3238	priv->hwtstamp_config.flags = 0;
3239	priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3240	priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3241
3242	/* Allocate page for receive rings */
3243	err = mlx4_alloc_hwq_res(dev: mdev->dev, wqres: &priv->res,
3244	MLX4_EN_PAGE_SIZE);
3245	if (err) {
3246	en_err(priv, "Failed to allocate page for rx qps\n");
3247	goto out;
3248	}
3249	priv->allocated = 1;
3250
3251	/*
3252	* Initialize netdev entry points
3253	*/
3254	if (mlx4_is_master(dev: priv->mdev->dev))
3255	dev->netdev_ops = &mlx4_netdev_ops_master;
3256	else
3257	dev->netdev_ops = &mlx4_netdev_ops;
3258	dev->xdp_metadata_ops = &mlx4_xdp_metadata_ops;
3259	dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3260	netif_set_real_num_tx_queues(dev, txq: priv->tx_ring_num[TX]);
3261	netif_set_real_num_rx_queues(dev, rxq: priv->rx_ring_num);
3262
3263	dev->ethtool_ops = &mlx4_en_ethtool_ops;
3264
3265	/*
3266	* Set driver features
3267	*/
3268	dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3269	if (mdev->LSO_support)
3270	dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3271
3272	if (mdev->dev->caps.tunnel_offload_mode ==
3273	MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3274	dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3275	NETIF_F_GSO_UDP_TUNNEL_CSUM |
3276	NETIF_F_GSO_PARTIAL;
3277	dev->features |= NETIF_F_GSO_UDP_TUNNEL |
3278	NETIF_F_GSO_UDP_TUNNEL_CSUM |
3279	NETIF_F_GSO_PARTIAL;
3280	dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3281	dev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3282	NETIF_F_RXCSUM |
3283	NETIF_F_TSO | NETIF_F_TSO6 |
3284	NETIF_F_GSO_UDP_TUNNEL |
3285	NETIF_F_GSO_UDP_TUNNEL_CSUM |
3286	NETIF_F_GSO_PARTIAL;
3287
3288	dev->udp_tunnel_nic_info = &mlx4_udp_tunnels;
3289	}
3290
3291	dev->vlan_features = dev->hw_features;
3292
3293	dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3294	dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3295	NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3296	NETIF_F_HW_VLAN_CTAG_FILTER;
3297	dev->hw_features |= NETIF_F_LOOPBACK |
3298	NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3299
3300	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3301	dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3302	NETIF_F_HW_VLAN_STAG_FILTER;
3303	dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3304	}
3305
3306	if (mlx4_is_slave(dev: mdev->dev)) {
3307	bool vlan_offload_disabled;
3308	int phv;
3309
3310	err = get_phv_bit(dev: mdev->dev, port, phv: &phv);
3311	if (!err && phv) {
3312	dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3313	priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3314	}
3315	err = mlx4_get_is_vlan_offload_disabled(dev: mdev->dev, port,
3316	vlan_offload_disabled: &vlan_offload_disabled);
3317	if (!err && vlan_offload_disabled) {
3318	dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3319	NETIF_F_HW_VLAN_CTAG_RX |
3320	NETIF_F_HW_VLAN_STAG_TX |
3321	NETIF_F_HW_VLAN_STAG_RX);
3322	dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3323	NETIF_F_HW_VLAN_CTAG_RX |
3324	NETIF_F_HW_VLAN_STAG_TX |
3325	NETIF_F_HW_VLAN_STAG_RX);
3326	}
3327	} else {
3328	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3329	!(mdev->dev->caps.flags2 &
3330	MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3331	dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3332	}
3333
3334	if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3335	dev->hw_features |= NETIF_F_RXFCS;
3336
3337	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3338	dev->hw_features |= NETIF_F_RXALL;
3339
3340	if (mdev->dev->caps.steering_mode ==
3341	MLX4_STEERING_MODE_DEVICE_MANAGED &&
3342	mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3343	dev->hw_features |= NETIF_F_NTUPLE;
3344
3345	if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3346	dev->priv_flags |= IFF_UNICAST_FLT;
3347
3348	/* Setting a default hash function value */
3349	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3350	priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3351	} else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3352	priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3353	} else {
3354	en_warn(priv,
3355	"No RSS hash capabilities exposed, using Toeplitz\n");
3356	priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3357	}
3358
3359	dev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT;
3360
3361	/* MTU range: 68 - hw-specific max */
3362	dev->min_mtu = ETH_MIN_MTU;
3363	dev->max_mtu = priv->max_mtu;
3364
3365	/* supports LSOv2 packets. */
3366	netif_set_tso_max_size(dev, GSO_MAX_SIZE);
3367
3368	mdev->pndev[port] = dev;
3369	mdev->upper[port] = NULL;
3370
3371	netif_carrier_off(dev);
3372	mlx4_en_set_default_moderation(priv);
3373
3374	en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3375	en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3376
3377	mlx4_en_update_loopback_state(dev: priv->dev, features: priv->dev->features);
3378
3379	/* Configure port */
3380	mlx4_en_calc_rx_buf(dev);
3381	err = mlx4_SET_PORT_general(dev: mdev->dev, port: priv->port,
3382	mtu: priv->rx_skb_size + ETH_FCS_LEN,
3383	pptx: prof->tx_pause, pfctx: prof->tx_ppp,
3384	pprx: prof->rx_pause, pfcrx: prof->rx_ppp);
3385	if (err) {
3386	en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3387	priv->port, err);
3388	goto out;
3389	}
3390
3391	if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3392	err = mlx4_SET_PORT_VXLAN(dev: mdev->dev, port: priv->port, steering: VXLAN_STEER_BY_OUTER_MAC, enable: 1);
3393	if (err) {
3394	en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3395	err);
3396	goto out;
3397	}
3398	}
3399
3400	/* Init port */
3401	en_warn(priv, "Initializing port\n");
3402	err = mlx4_INIT_PORT(dev: mdev->dev, port: priv->port);
3403	if (err) {
3404	en_err(priv, "Failed Initializing port\n");
3405	goto out;
3406	}
3407	queue_delayed_work(wq: mdev->workqueue, dwork: &priv->stats_task, STATS_DELAY);
3408
3409	/* Initialize time stamp mechanism */
3410	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3411	mlx4_en_init_timestamp(mdev);
3412
3413	queue_delayed_work(wq: mdev->workqueue, dwork: &priv->service_task,
3414	SERVICE_TASK_DELAY);
3415
3416	mlx4_en_set_stats_bitmap(dev: mdev->dev, stats_bitmap: &priv->stats_bitmap,
3417	rx_ppp: mdev->profile.prof[priv->port].rx_ppp,
3418	rx_pause: mdev->profile.prof[priv->port].rx_pause,
3419	tx_ppp: mdev->profile.prof[priv->port].tx_ppp,
3420	tx_pause: mdev->profile.prof[priv->port].tx_pause);
3421
3422	SET_NETDEV_DEVLINK_PORT(dev,
3423	mlx4_get_devlink_port(mdev->dev, priv->port));
3424	err = register_netdev(dev);
3425	if (err) {
3426	en_err(priv, "Netdev registration failed for port %d\n", port);
3427	goto out;
3428	}
3429
3430	priv->registered = 1;
3431
3432	return 0;
3433
3434	out:
3435	mlx4_en_destroy_netdev(dev);
3436	return err;
3437	}
3438
3439	int mlx4_en_reset_config(struct net_device *dev,
3440	struct hwtstamp_config ts_config,
3441	netdev_features_t features)
3442	{
3443	struct mlx4_en_priv *priv = netdev_priv(dev);
3444	struct mlx4_en_dev *mdev = priv->mdev;
3445	struct mlx4_en_port_profile new_prof;
3446	struct mlx4_en_priv *tmp;
3447	int port_up = 0;
3448	int err = 0;
3449
3450	if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3451	priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3452	!DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3453	!DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3454	return 0; /* Nothing to change */
3455
3456	if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3457	(features & NETIF_F_HW_VLAN_CTAG_RX) &&
3458	(priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3459	en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3460	return -EINVAL;
3461	}
3462
3463	tmp = kzalloc(size: sizeof(*tmp), GFP_KERNEL);
3464	if (!tmp)
3465	return -ENOMEM;
3466
3467	mutex_lock(&mdev->state_lock);
3468
3469	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3470	memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3471
3472	err = mlx4_en_try_alloc_resources(priv, tmp, prof: &new_prof, carry_xdp_prog: true);
3473	if (err)
3474	goto out;
3475
3476	if (priv->port_up) {
3477	port_up = 1;
3478	mlx4_en_stop_port(dev, detach: 1);
3479	}
3480
3481	mlx4_en_safe_replace_resources(priv, tmp);
3482
3483	if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3484	if (features & NETIF_F_HW_VLAN_CTAG_RX)
3485	dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3486	else
3487	dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3488	} else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3489	/* RX time-stamping is OFF, update the RX vlan offload
3490	* to the latest wanted state
3491	*/
3492	if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3493	dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3494	else
3495	dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3496	}
3497
3498	if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3499	if (features & NETIF_F_RXFCS)
3500	dev->features |= NETIF_F_RXFCS;
3501	else
3502	dev->features &= ~NETIF_F_RXFCS;
3503	}
3504
3505	/* RX vlan offload and RX time-stamping can't co-exist !
3506	* Regardless of the caller's choice,
3507	* Turn Off RX vlan offload in case of time-stamping is ON
3508	*/
3509	if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3510	if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3511	en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3512	dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3513	}
3514
3515	if (port_up) {
3516	err = mlx4_en_start_port(dev);
3517	if (err)
3518	en_err(priv, "Failed starting port\n");
3519	}
3520
3521	if (!err)
3522	err = mlx4_en_moderation_update(priv);
3523	out:
3524	mutex_unlock(lock: &mdev->state_lock);
3525	kfree(objp: tmp);
3526	if (!err)
3527	netdev_features_change(dev);
3528	return err;
3529	}
3530