en_netdev.c

   1/*
   2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and/or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 *
  32 */
  33
  34#include <linux/bpf.h>
  35#include <linux/etherdevice.h>
  36#include <linux/filter.h>
  37#include <linux/tcp.h>
  38#include <linux/if_vlan.h>
  39#include <linux/delay.h>
  40#include <linux/slab.h>
  41#include <linux/hash.h>
  42#include <net/ip.h>
  43#include <net/vxlan.h>
  44#include <net/devlink.h>
  45#include <net/rps.h>
  46#include <net/netdev_queues.h>
  47
  48#include <linux/mlx4/driver.h>
  49#include <linux/mlx4/device.h>
  50#include <linux/mlx4/cmd.h>
  51#include <linux/mlx4/cq.h>
  52
  53#include "mlx4_en.h"
  54#include "en_port.h"
  55
  56#define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
  57				XDP_PACKET_HEADROOM -			    \
  58				SKB_DATA_ALIGN(sizeof(struct skb_shared_info))))
  59
  60int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  61{
  62	struct mlx4_en_priv *priv = netdev_priv(dev);
  63	int i;
  64	unsigned int offset = 0;
  65
  66	if (up && up != MLX4_EN_NUM_UP_HIGH)
  67		return -EINVAL;
  68
  69	netdev_set_num_tc(dev, up);
  70	netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
  71	/* Partition Tx queues evenly amongst UP's */
  72	for (i = 0; i < up; i++) {
  73		netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  74		offset += priv->num_tx_rings_p_up;
  75	}
  76
  77#ifdef CONFIG_MLX4_EN_DCB
  78	if (!mlx4_is_slave(priv->mdev->dev)) {
  79		if (up) {
  80			if (priv->dcbx_cap)
  81				priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
  82		} else {
  83			priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
  84			priv->cee_config.pfc_state = false;
  85		}
  86	}
  87#endif /* CONFIG_MLX4_EN_DCB */
  88
  89	return 0;
  90}
  91
  92int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc)
  93{
  94	struct mlx4_en_priv *priv = netdev_priv(dev);
  95	struct mlx4_en_dev *mdev = priv->mdev;
  96	struct mlx4_en_port_profile new_prof;
  97	struct mlx4_en_priv *tmp;
  98	int total_count;
  99	int port_up = 0;
 100	int err = 0;
 101
 102	tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
 103	if (!tmp)
 104		return -ENOMEM;
 105
 106	mutex_lock(&mdev->state_lock);
 107	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
 108	new_prof.num_up = (tc == 0) ? MLX4_EN_NUM_UP_LOW :
 109				      MLX4_EN_NUM_UP_HIGH;
 110	new_prof.tx_ring_num[TX] = new_prof.num_tx_rings_p_up *
 111				   new_prof.num_up;
 112	total_count = new_prof.tx_ring_num[TX] + new_prof.tx_ring_num[TX_XDP];
 113	if (total_count > MAX_TX_RINGS) {
 114		err = -EINVAL;
 115		en_err(priv,
 116		       "Total number of TX and XDP rings (%d) exceeds the maximum supported (%d)\n",
 117		       total_count, MAX_TX_RINGS);
 118		goto out;
 119	}
 120	err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
 121	if (err)
 122		goto out;
 123
 124	if (priv->port_up) {
 125		port_up = 1;
 126		mlx4_en_stop_port(dev, 1);
 127	}
 128
 129	mlx4_en_safe_replace_resources(priv, tmp);
 130	if (port_up) {
 131		err = mlx4_en_start_port(dev);
 132		if (err) {
 133			en_err(priv, "Failed starting port for setup TC\n");
 134			goto out;
 135		}
 136	}
 137
 138	err = mlx4_en_setup_tc(dev, tc);
 139out:
 140	mutex_unlock(&mdev->state_lock);
 141	kfree(tmp);
 142	return err;
 143}
 144
 145static int __mlx4_en_setup_tc(struct net_device *dev, enum tc_setup_type type,
 146			      void *type_data)
 147{
 148	struct tc_mqprio_qopt *mqprio = type_data;
 149
 150	if (type != TC_SETUP_QDISC_MQPRIO)
 151		return -EOPNOTSUPP;
 152
 153	if (mqprio->num_tc && mqprio->num_tc != MLX4_EN_NUM_UP_HIGH)
 154		return -EINVAL;
 155
 156	mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 157
 158	return mlx4_en_alloc_tx_queue_per_tc(dev, mqprio->num_tc);
 159}
 160
 161#ifdef CONFIG_RFS_ACCEL
 162
 163struct mlx4_en_filter {
 164	struct list_head next;
 165	struct work_struct work;
 166
 167	u8     ip_proto;
 168	__be32 src_ip;
 169	__be32 dst_ip;
 170	__be16 src_port;
 171	__be16 dst_port;
 172
 173	int rxq_index;
 174	struct mlx4_en_priv *priv;
 175	u32 flow_id;			/* RFS infrastructure id */
 176	int id;				/* mlx4_en driver id */
 177	u64 reg_id;			/* Flow steering API id */
 178	u8 activated;			/* Used to prevent expiry before filter
 179					 * is attached
 180					 */
 181	struct hlist_node filter_chain;
 182};
 183
 184static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 185
 186static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 187{
 188	switch (ip_proto) {
 189	case IPPROTO_UDP:
 190		return MLX4_NET_TRANS_RULE_ID_UDP;
 191	case IPPROTO_TCP:
 192		return MLX4_NET_TRANS_RULE_ID_TCP;
 193	default:
 194		return MLX4_NET_TRANS_RULE_NUM;
 195	}
 196};
 197
 198/* Must not acquire state_lock, as its corresponding work_sync
 199 * is done under it.
 200 */
 201static void mlx4_en_filter_work(struct work_struct *work)
 202{
 203	struct mlx4_en_filter *filter = container_of(work,
 204						     struct mlx4_en_filter,
 205						     work);
 206	struct mlx4_en_priv *priv = filter->priv;
 207	struct mlx4_spec_list spec_tcp_udp = {
 208		.id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 209		{
 210			.tcp_udp = {
 211				.dst_port = filter->dst_port,
 212				.dst_port_msk = (__force __be16)-1,
 213				.src_port = filter->src_port,
 214				.src_port_msk = (__force __be16)-1,
 215			},
 216		},
 217	};
 218	struct mlx4_spec_list spec_ip = {
 219		.id = MLX4_NET_TRANS_RULE_ID_IPV4,
 220		{
 221			.ipv4 = {
 222				.dst_ip = filter->dst_ip,
 223				.dst_ip_msk = (__force __be32)-1,
 224				.src_ip = filter->src_ip,
 225				.src_ip_msk = (__force __be32)-1,
 226			},
 227		},
 228	};
 229	struct mlx4_spec_list spec_eth = {
 230		.id = MLX4_NET_TRANS_RULE_ID_ETH,
 231	};
 232	struct mlx4_net_trans_rule rule = {
 233		.list = LIST_HEAD_INIT(rule.list),
 234		.queue_mode = MLX4_NET_TRANS_Q_LIFO,
 235		.exclusive = 1,
 236		.allow_loopback = 1,
 237		.promisc_mode = MLX4_FS_REGULAR,
 238		.port = priv->port,
 239		.priority = MLX4_DOMAIN_RFS,
 240	};
 241	int rc;
 242	__be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 243
 244	if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 245		en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 246			filter->ip_proto);
 247		goto ignore;
 248	}
 249	list_add_tail(&spec_eth.list, &rule.list);
 250	list_add_tail(&spec_ip.list, &rule.list);
 251	list_add_tail(&spec_tcp_udp.list, &rule.list);
 252
 253	rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 254	memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 255	memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 256
 257	filter->activated = 0;
 258
 259	if (filter->reg_id) {
 260		rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 261		if (rc && rc != -ENOENT)
 262			en_err(priv, "Error detaching flow. rc = %d\n", rc);
 263	}
 264
 265	rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 266	if (rc)
 267		en_err(priv, "Error attaching flow. err = %d\n", rc);
 268
 269ignore:
 270	mlx4_en_filter_rfs_expire(priv);
 271
 272	filter->activated = 1;
 273}
 274
 275static inline struct hlist_head *
 276filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 277		   __be16 src_port, __be16 dst_port)
 278{
 279	unsigned long l;
 280	int bucket_idx;
 281
 282	l = (__force unsigned long)src_port |
 283	    ((__force unsigned long)dst_port << 2);
 284	l ^= (__force unsigned long)(src_ip ^ dst_ip);
 285
 286	bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 287
 288	return &priv->filter_hash[bucket_idx];
 289}
 290
 291static struct mlx4_en_filter *
 292mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 293		     __be32 dst_ip, u8 ip_proto, __be16 src_port,
 294		     __be16 dst_port, u32 flow_id)
 295{
 296	struct mlx4_en_filter *filter;
 297
 298	filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 299	if (!filter)
 300		return NULL;
 301
 302	filter->priv = priv;
 303	filter->rxq_index = rxq_index;
 304	INIT_WORK(&filter->work, mlx4_en_filter_work);
 305
 306	filter->src_ip = src_ip;
 307	filter->dst_ip = dst_ip;
 308	filter->ip_proto = ip_proto;
 309	filter->src_port = src_port;
 310	filter->dst_port = dst_port;
 311
 312	filter->flow_id = flow_id;
 313
 314	filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 315
 316	list_add_tail(&filter->next, &priv->filters);
 317	hlist_add_head(&filter->filter_chain,
 318		       filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 319					  dst_port));
 320
 321	return filter;
 322}
 323
 324static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 325{
 326	struct mlx4_en_priv *priv = filter->priv;
 327	int rc;
 328
 329	list_del(&filter->next);
 330
 331	rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 332	if (rc && rc != -ENOENT)
 333		en_err(priv, "Error detaching flow. rc = %d\n", rc);
 334
 335	kfree(filter);
 336}
 337
 338static inline struct mlx4_en_filter *
 339mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 340		    u8 ip_proto, __be16 src_port, __be16 dst_port)
 341{
 342	struct mlx4_en_filter *filter;
 343	struct mlx4_en_filter *ret = NULL;
 344
 345	hlist_for_each_entry(filter,
 346			     filter_hash_bucket(priv, src_ip, dst_ip,
 347						src_port, dst_port),
 348			     filter_chain) {
 349		if (filter->src_ip == src_ip &&
 350		    filter->dst_ip == dst_ip &&
 351		    filter->ip_proto == ip_proto &&
 352		    filter->src_port == src_port &&
 353		    filter->dst_port == dst_port) {
 354			ret = filter;
 355			break;
 356		}
 357	}
 358
 359	return ret;
 360}
 361
 362static int
 363mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 364		   u16 rxq_index, u32 flow_id)
 365{
 366	struct mlx4_en_priv *priv = netdev_priv(net_dev);
 367	struct mlx4_en_filter *filter;
 368	const struct iphdr *ip;
 369	const __be16 *ports;
 370	u8 ip_proto;
 371	__be32 src_ip;
 372	__be32 dst_ip;
 373	__be16 src_port;
 374	__be16 dst_port;
 375	int nhoff = skb_network_offset(skb);
 376	int ret = 0;
 377
 378	if (skb->encapsulation)
 379		return -EPROTONOSUPPORT;
 380
 381	if (skb->protocol != htons(ETH_P_IP))
 382		return -EPROTONOSUPPORT;
 383
 384	ip = (const struct iphdr *)(skb->data + nhoff);
 385	if (ip_is_fragment(ip))
 386		return -EPROTONOSUPPORT;
 387
 388	if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 389		return -EPROTONOSUPPORT;
 390	ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 391
 392	ip_proto = ip->protocol;
 393	src_ip = ip->saddr;
 394	dst_ip = ip->daddr;
 395	src_port = ports[0];
 396	dst_port = ports[1];
 397
 398	spin_lock_bh(&priv->filters_lock);
 399	filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 400				     src_port, dst_port);
 401	if (filter) {
 402		if (filter->rxq_index == rxq_index)
 403			goto out;
 404
 405		filter->rxq_index = rxq_index;
 406	} else {
 407		filter = mlx4_en_filter_alloc(priv, rxq_index,
 408					      src_ip, dst_ip, ip_proto,
 409					      src_port, dst_port, flow_id);
 410		if (!filter) {
 411			ret = -ENOMEM;
 412			goto err;
 413		}
 414	}
 415
 416	queue_work(priv->mdev->workqueue, &filter->work);
 417
 418out:
 419	ret = filter->id;
 420err:
 421	spin_unlock_bh(&priv->filters_lock);
 422
 423	return ret;
 424}
 425
 426void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 427{
 428	struct mlx4_en_filter *filter, *tmp;
 429	LIST_HEAD(del_list);
 430
 431	spin_lock_bh(&priv->filters_lock);
 432	list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 433		list_move(&filter->next, &del_list);
 434		hlist_del(&filter->filter_chain);
 435	}
 436	spin_unlock_bh(&priv->filters_lock);
 437
 438	list_for_each_entry_safe(filter, tmp, &del_list, next) {
 439		cancel_work_sync(&filter->work);
 440		mlx4_en_filter_free(filter);
 441	}
 442}
 443
 444static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 445{
 446	struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 447	LIST_HEAD(del_list);
 448	int i = 0;
 449
 450	spin_lock_bh(&priv->filters_lock);
 451	list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 452		if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 453			break;
 454
 455		if (filter->activated &&
 456		    !work_pending(&filter->work) &&
 457		    rps_may_expire_flow(priv->dev,
 458					filter->rxq_index, filter->flow_id,
 459					filter->id)) {
 460			list_move(&filter->next, &del_list);
 461			hlist_del(&filter->filter_chain);
 462		} else
 463			last_filter = filter;
 464
 465		i++;
 466	}
 467
 468	if (last_filter && (&last_filter->next != priv->filters.next))
 469		list_move(&priv->filters, &last_filter->next);
 470
 471	spin_unlock_bh(&priv->filters_lock);
 472
 473	list_for_each_entry_safe(filter, tmp, &del_list, next)
 474		mlx4_en_filter_free(filter);
 475}
 476#endif
 477
 478static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 479				   __be16 proto, u16 vid)
 480{
 481	struct mlx4_en_priv *priv = netdev_priv(dev);
 482	struct mlx4_en_dev *mdev = priv->mdev;
 483	int err;
 484	int idx;
 485
 486	en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 487
 488	set_bit(vid, priv->active_vlans);
 489
 490	/* Add VID to port VLAN filter */
 491	mutex_lock(&mdev->state_lock);
 492	if (mdev->device_up && priv->port_up) {
 493		err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 494		if (err) {
 495			en_err(priv, "Failed configuring VLAN filter\n");
 496			goto out;
 497		}
 498	}
 499	err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 500	if (err)
 501		en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 502
 503out:
 504	mutex_unlock(&mdev->state_lock);
 505	return err;
 506}
 507
 508static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 509				    __be16 proto, u16 vid)
 510{
 511	struct mlx4_en_priv *priv = netdev_priv(dev);
 512	struct mlx4_en_dev *mdev = priv->mdev;
 513	int err = 0;
 514
 515	en_dbg(HW, priv, "Killing VID:%d\n", vid);
 516
 517	clear_bit(vid, priv->active_vlans);
 518
 519	/* Remove VID from port VLAN filter */
 520	mutex_lock(&mdev->state_lock);
 521	mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 522
 523	if (mdev->device_up && priv->port_up) {
 524		err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 525		if (err)
 526			en_err(priv, "Failed configuring VLAN filter\n");
 527	}
 528	mutex_unlock(&mdev->state_lock);
 529
 530	return err;
 531}
 532
 533static void mlx4_en_u64_to_mac(struct net_device *dev, u64 src_mac)
 534{
 535	u8 addr[ETH_ALEN];
 536
 537	u64_to_ether_addr(src_mac, addr);
 538	eth_hw_addr_set(dev, addr);
 539}
 540
 541
 542static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv,
 543				    const unsigned char *addr,
 544				    int qpn, u64 *reg_id)
 545{
 546	int err;
 547
 548	if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 549	    priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 550		return 0; /* do nothing */
 551
 552	err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 553				    MLX4_DOMAIN_NIC, reg_id);
 554	if (err) {
 555		en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 556		return err;
 557	}
 558	en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 559	return 0;
 560}
 561
 562
 563static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 564				const unsigned char *mac, int *qpn, u64 *reg_id)
 565{
 566	struct mlx4_en_dev *mdev = priv->mdev;
 567	struct mlx4_dev *dev = mdev->dev;
 568	int err;
 569
 570	switch (dev->caps.steering_mode) {
 571	case MLX4_STEERING_MODE_B0: {
 572		struct mlx4_qp qp;
 573		u8 gid[16] = {0};
 574
 575		qp.qpn = *qpn;
 576		memcpy(&gid[10], mac, ETH_ALEN);
 577		gid[5] = priv->port;
 578
 579		err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 580		break;
 581	}
 582	case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 583		struct mlx4_spec_list spec_eth = { {NULL} };
 584		__be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 585
 586		struct mlx4_net_trans_rule rule = {
 587			.queue_mode = MLX4_NET_TRANS_Q_FIFO,
 588			.exclusive = 0,
 589			.allow_loopback = 1,
 590			.promisc_mode = MLX4_FS_REGULAR,
 591			.priority = MLX4_DOMAIN_NIC,
 592		};
 593
 594		rule.port = priv->port;
 595		rule.qpn = *qpn;
 596		INIT_LIST_HEAD(&rule.list);
 597
 598		spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 599		memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 600		memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 601		list_add_tail(&spec_eth.list, &rule.list);
 602
 603		err = mlx4_flow_attach(dev, &rule, reg_id);
 604		break;
 605	}
 606	default:
 607		return -EINVAL;
 608	}
 609	if (err)
 610		en_warn(priv, "Failed Attaching Unicast\n");
 611
 612	return err;
 613}
 614
 615static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 616				     const unsigned char *mac,
 617				     int qpn, u64 reg_id)
 618{
 619	struct mlx4_en_dev *mdev = priv->mdev;
 620	struct mlx4_dev *dev = mdev->dev;
 621
 622	switch (dev->caps.steering_mode) {
 623	case MLX4_STEERING_MODE_B0: {
 624		struct mlx4_qp qp;
 625		u8 gid[16] = {0};
 626
 627		qp.qpn = qpn;
 628		memcpy(&gid[10], mac, ETH_ALEN);
 629		gid[5] = priv->port;
 630
 631		mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 632		break;
 633	}
 634	case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 635		mlx4_flow_detach(dev, reg_id);
 636		break;
 637	}
 638	default:
 639		en_err(priv, "Invalid steering mode.\n");
 640	}
 641}
 642
 643static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 644{
 645	struct mlx4_en_dev *mdev = priv->mdev;
 646	struct mlx4_dev *dev = mdev->dev;
 647	int index = 0;
 648	int err = 0;
 649	int *qpn = &priv->base_qpn;
 650	u64 mac = ether_addr_to_u64(priv->dev->dev_addr);
 651
 652	en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 653	       priv->dev->dev_addr);
 654	index = mlx4_register_mac(dev, priv->port, mac);
 655	if (index < 0) {
 656		err = index;
 657		en_err(priv, "Failed adding MAC: %pM\n",
 658		       priv->dev->dev_addr);
 659		return err;
 660	}
 661
 662	en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode);
 663
 664	if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 665		int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 666		*qpn = base_qpn + index;
 667		return 0;
 668	}
 669
 670	err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP,
 671				    MLX4_RES_USAGE_DRIVER);
 672	en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 673	if (err) {
 674		en_err(priv, "Failed to reserve qp for mac registration\n");
 675		mlx4_unregister_mac(dev, priv->port, mac);
 676		return err;
 677	}
 678
 679	return 0;
 680}
 681
 682static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 683{
 684	struct mlx4_en_dev *mdev = priv->mdev;
 685	struct mlx4_dev *dev = mdev->dev;
 686	int qpn = priv->base_qpn;
 687
 688	if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 689		u64 mac = ether_addr_to_u64(priv->dev->dev_addr);
 690		en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 691		       priv->dev->dev_addr);
 692		mlx4_unregister_mac(dev, priv->port, mac);
 693	} else {
 694		en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 695		       priv->port, qpn);
 696		mlx4_qp_release_range(dev, qpn, 1);
 697		priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 698	}
 699}
 700
 701static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 702			       unsigned char *new_mac, unsigned char *prev_mac)
 703{
 704	struct mlx4_en_dev *mdev = priv->mdev;
 705	struct mlx4_dev *dev = mdev->dev;
 706	int err = 0;
 707	u64 new_mac_u64 = ether_addr_to_u64(new_mac);
 708
 709	if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 710		struct hlist_head *bucket;
 711		unsigned int mac_hash;
 712		struct mlx4_mac_entry *entry;
 713		struct hlist_node *tmp;
 714		u64 prev_mac_u64 = ether_addr_to_u64(prev_mac);
 715
 716		bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 717		hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 718			if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 719				mlx4_en_uc_steer_release(priv, entry->mac,
 720							 qpn, entry->reg_id);
 721				mlx4_unregister_mac(dev, priv->port,
 722						    prev_mac_u64);
 723				hlist_del_rcu(&entry->hlist);
 724				synchronize_rcu();
 725				memcpy(entry->mac, new_mac, ETH_ALEN);
 726				entry->reg_id = 0;
 727				mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 728				hlist_add_head_rcu(&entry->hlist,
 729						   &priv->mac_hash[mac_hash]);
 730				mlx4_register_mac(dev, priv->port, new_mac_u64);
 731				err = mlx4_en_uc_steer_add(priv, new_mac,
 732							   &qpn,
 733							   &entry->reg_id);
 734				if (err)
 735					return err;
 736				if (priv->tunnel_reg_id) {
 737					mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 738					priv->tunnel_reg_id = 0;
 739				}
 740				err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 741							       &priv->tunnel_reg_id);
 742				return err;
 743			}
 744		}
 745		return -EINVAL;
 746	}
 747
 748	return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 749}
 750
 751static void mlx4_en_update_user_mac(struct mlx4_en_priv *priv,
 752				    unsigned char new_mac[ETH_ALEN + 2])
 753{
 754	struct mlx4_en_dev *mdev = priv->mdev;
 755	int err;
 756
 757	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_USER_MAC_EN))
 758		return;
 759
 760	err = mlx4_SET_PORT_user_mac(mdev->dev, priv->port, new_mac);
 761	if (err)
 762		en_err(priv, "Failed to pass user MAC(%pM) to Firmware for port %d, with error %d\n",
 763		       new_mac, priv->port, err);
 764}
 765
 766static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 767			      unsigned char new_mac[ETH_ALEN + 2])
 768{
 769	int err = 0;
 770
 771	if (priv->port_up) {
 772		/* Remove old MAC and insert the new one */
 773		err = mlx4_en_replace_mac(priv, priv->base_qpn,
 774					  new_mac, priv->current_mac);
 775		if (err)
 776			en_err(priv, "Failed changing HW MAC address\n");
 777	} else
 778		en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 779
 780	if (!err)
 781		memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 782
 783	return err;
 784}
 785
 786static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 787{
 788	struct mlx4_en_priv *priv = netdev_priv(dev);
 789	struct mlx4_en_dev *mdev = priv->mdev;
 790	struct sockaddr *saddr = addr;
 791	unsigned char new_mac[ETH_ALEN + 2];
 792	int err;
 793
 794	if (!is_valid_ether_addr(saddr->sa_data))
 795		return -EADDRNOTAVAIL;
 796
 797	mutex_lock(&mdev->state_lock);
 798	memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 799	err = mlx4_en_do_set_mac(priv, new_mac);
 800	if (err)
 801		goto out;
 802
 803	eth_hw_addr_set(dev, saddr->sa_data);
 804	mlx4_en_update_user_mac(priv, new_mac);
 805out:
 806	mutex_unlock(&mdev->state_lock);
 807
 808	return err;
 809}
 810
 811static void mlx4_en_clear_list(struct net_device *dev)
 812{
 813	struct mlx4_en_priv *priv = netdev_priv(dev);
 814	struct mlx4_en_mc_list *tmp, *mc_to_del;
 815
 816	list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 817		list_del(&mc_to_del->list);
 818		kfree(mc_to_del);
 819	}
 820}
 821
 822static void mlx4_en_cache_mclist(struct net_device *dev)
 823{
 824	struct mlx4_en_priv *priv = netdev_priv(dev);
 825	struct netdev_hw_addr *ha;
 826	struct mlx4_en_mc_list *tmp;
 827
 828	mlx4_en_clear_list(dev);
 829	netdev_for_each_mc_addr(ha, dev) {
 830		tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 831		if (!tmp) {
 832			mlx4_en_clear_list(dev);
 833			return;
 834		}
 835		memcpy(tmp->addr, ha->addr, ETH_ALEN);
 836		list_add_tail(&tmp->list, &priv->mc_list);
 837	}
 838}
 839
 840static void update_mclist_flags(struct mlx4_en_priv *priv,
 841				struct list_head *dst,
 842				struct list_head *src)
 843{
 844	struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 845	bool found;
 846
 847	/* Find all the entries that should be removed from dst,
 848	 * These are the entries that are not found in src
 849	 */
 850	list_for_each_entry(dst_tmp, dst, list) {
 851		found = false;
 852		list_for_each_entry(src_tmp, src, list) {
 853			if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 854				found = true;
 855				break;
 856			}
 857		}
 858		if (!found)
 859			dst_tmp->action = MCLIST_REM;
 860	}
 861
 862	/* Add entries that exist in src but not in dst
 863	 * mark them as need to add
 864	 */
 865	list_for_each_entry(src_tmp, src, list) {
 866		found = false;
 867		list_for_each_entry(dst_tmp, dst, list) {
 868			if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 869				dst_tmp->action = MCLIST_NONE;
 870				found = true;
 871				break;
 872			}
 873		}
 874		if (!found) {
 875			new_mc = kmemdup(src_tmp,
 876					 sizeof(struct mlx4_en_mc_list),
 877					 GFP_KERNEL);
 878			if (!new_mc)
 879				return;
 880
 881			new_mc->action = MCLIST_ADD;
 882			list_add_tail(&new_mc->list, dst);
 883		}
 884	}
 885}
 886
 887static void mlx4_en_set_rx_mode(struct net_device *dev)
 888{
 889	struct mlx4_en_priv *priv = netdev_priv(dev);
 890
 891	if (!priv->port_up)
 892		return;
 893
 894	queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 895}
 896
 897static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 898				     struct mlx4_en_dev *mdev)
 899{
 900	int err = 0;
 901
 902	if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 903		if (netif_msg_rx_status(priv))
 904			en_warn(priv, "Entering promiscuous mode\n");
 905		priv->flags |= MLX4_EN_FLAG_PROMISC;
 906
 907		/* Enable promiscouos mode */
 908		switch (mdev->dev->caps.steering_mode) {
 909		case MLX4_STEERING_MODE_DEVICE_MANAGED:
 910			err = mlx4_flow_steer_promisc_add(mdev->dev,
 911							  priv->port,
 912							  priv->base_qpn,
 913							  MLX4_FS_ALL_DEFAULT);
 914			if (err)
 915				en_err(priv, "Failed enabling promiscuous mode\n");
 916			priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 917			break;
 918
 919		case MLX4_STEERING_MODE_B0:
 920			err = mlx4_unicast_promisc_add(mdev->dev,
 921						       priv->base_qpn,
 922						       priv->port);
 923			if (err)
 924				en_err(priv, "Failed enabling unicast promiscuous mode\n");
 925
 926			/* Add the default qp number as multicast
 927			 * promisc
 928			 */
 929			if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 930				err = mlx4_multicast_promisc_add(mdev->dev,
 931								 priv->base_qpn,
 932								 priv->port);
 933				if (err)
 934					en_err(priv, "Failed enabling multicast promiscuous mode\n");
 935				priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 936			}
 937			break;
 938
 939		case MLX4_STEERING_MODE_A0:
 940			err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 941						     priv->port,
 942						     priv->base_qpn,
 943						     1);
 944			if (err)
 945				en_err(priv, "Failed enabling promiscuous mode\n");
 946			break;
 947		}
 948
 949		/* Disable port multicast filter (unconditionally) */
 950		err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 951					  0, MLX4_MCAST_DISABLE);
 952		if (err)
 953			en_err(priv, "Failed disabling multicast filter\n");
 954	}
 955}
 956
 957static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 958				       struct mlx4_en_dev *mdev)
 959{
 960	int err = 0;
 961
 962	if (netif_msg_rx_status(priv))
 963		en_warn(priv, "Leaving promiscuous mode\n");
 964	priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 965
 966	/* Disable promiscouos mode */
 967	switch (mdev->dev->caps.steering_mode) {
 968	case MLX4_STEERING_MODE_DEVICE_MANAGED:
 969		err = mlx4_flow_steer_promisc_remove(mdev->dev,
 970						     priv->port,
 971						     MLX4_FS_ALL_DEFAULT);
 972		if (err)
 973			en_err(priv, "Failed disabling promiscuous mode\n");
 974		priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 975		break;
 976
 977	case MLX4_STEERING_MODE_B0:
 978		err = mlx4_unicast_promisc_remove(mdev->dev,
 979						  priv->base_qpn,
 980						  priv->port);
 981		if (err)
 982			en_err(priv, "Failed disabling unicast promiscuous mode\n");
 983		/* Disable Multicast promisc */
 984		if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 985			err = mlx4_multicast_promisc_remove(mdev->dev,
 986							    priv->base_qpn,
 987							    priv->port);
 988			if (err)
 989				en_err(priv, "Failed disabling multicast promiscuous mode\n");
 990			priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 991		}
 992		break;
 993
 994	case MLX4_STEERING_MODE_A0:
 995		err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 996					     priv->port,
 997					     priv->base_qpn, 0);
 998		if (err)
 999			en_err(priv, "Failed disabling promiscuous mode\n");
1000		break;
1001	}
1002}
1003
1004static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
1005				 struct net_device *dev,
1006				 struct mlx4_en_dev *mdev)
1007{
1008	struct mlx4_en_mc_list *mclist, *tmp;
1009	u64 mcast_addr = 0;
1010	u8 mc_list[16] = {0};
1011	int err = 0;
1012
1013	/* Enable/disable the multicast filter according to IFF_ALLMULTI */
1014	if (dev->flags & IFF_ALLMULTI) {
1015		err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1016					  0, MLX4_MCAST_DISABLE);
1017		if (err)
1018			en_err(priv, "Failed disabling multicast filter\n");
1019
1020		/* Add the default qp number as multicast promisc */
1021		if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1022			switch (mdev->dev->caps.steering_mode) {
1023			case MLX4_STEERING_MODE_DEVICE_MANAGED:
1024				err = mlx4_flow_steer_promisc_add(mdev->dev,
1025								  priv->port,
1026								  priv->base_qpn,
1027								  MLX4_FS_MC_DEFAULT);
1028				break;
1029
1030			case MLX4_STEERING_MODE_B0:
1031				err = mlx4_multicast_promisc_add(mdev->dev,
1032								 priv->base_qpn,
1033								 priv->port);
1034				break;
1035
1036			case MLX4_STEERING_MODE_A0:
1037				break;
1038			}
1039			if (err)
1040				en_err(priv, "Failed entering multicast promisc mode\n");
1041			priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1042		}
1043	} else {
1044		/* Disable Multicast promisc */
1045		if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1046			switch (mdev->dev->caps.steering_mode) {
1047			case MLX4_STEERING_MODE_DEVICE_MANAGED:
1048				err = mlx4_flow_steer_promisc_remove(mdev->dev,
1049								     priv->port,
1050								     MLX4_FS_MC_DEFAULT);
1051				break;
1052
1053			case MLX4_STEERING_MODE_B0:
1054				err = mlx4_multicast_promisc_remove(mdev->dev,
1055								    priv->base_qpn,
1056								    priv->port);
1057				break;
1058
1059			case MLX4_STEERING_MODE_A0:
1060				break;
1061			}
1062			if (err)
1063				en_err(priv, "Failed disabling multicast promiscuous mode\n");
1064			priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1065		}
1066
1067		err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1068					  0, MLX4_MCAST_DISABLE);
1069		if (err)
1070			en_err(priv, "Failed disabling multicast filter\n");
1071
1072		/* Flush mcast filter and init it with broadcast address */
1073		mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1074				    1, MLX4_MCAST_CONFIG);
1075
1076		/* Update multicast list - we cache all addresses so they won't
1077		 * change while HW is updated holding the command semaphore
1078		 */
1079		netif_addr_lock_bh(dev);
1080		mlx4_en_cache_mclist(dev);
1081		netif_addr_unlock_bh(dev);
1082		list_for_each_entry(mclist, &priv->mc_list, list) {
1083			mcast_addr = ether_addr_to_u64(mclist->addr);
1084			mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1085					    mcast_addr, 0, MLX4_MCAST_CONFIG);
1086		}
1087		err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1088					  0, MLX4_MCAST_ENABLE);
1089		if (err)
1090			en_err(priv, "Failed enabling multicast filter\n");
1091
1092		update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1093		list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1094			if (mclist->action == MCLIST_REM) {
1095				/* detach this address and delete from list */
1096				memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1097				mc_list[5] = priv->port;
1098				err = mlx4_multicast_detach(mdev->dev,
1099							    priv->rss_map.indir_qp,
1100							    mc_list,
1101							    MLX4_PROT_ETH,
1102							    mclist->reg_id);
1103				if (err)
1104					en_err(priv, "Fail to detach multicast address\n");
1105
1106				if (mclist->tunnel_reg_id) {
1107					err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1108					if (err)
1109						en_err(priv, "Failed to detach multicast address\n");
1110				}
1111
1112				/* remove from list */
1113				list_del(&mclist->list);
1114				kfree(mclist);
1115			} else if (mclist->action == MCLIST_ADD) {
1116				/* attach the address */
1117				memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1118				/* needed for B0 steering support */
1119				mc_list[5] = priv->port;
1120				err = mlx4_multicast_attach(mdev->dev,
1121							    priv->rss_map.indir_qp,
1122							    mc_list,
1123							    priv->port, 0,
1124							    MLX4_PROT_ETH,
1125							    &mclist->reg_id);
1126				if (err)
1127					en_err(priv, "Fail to attach multicast address\n");
1128
1129				err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1130							       &mclist->tunnel_reg_id);
1131				if (err)
1132					en_err(priv, "Failed to attach multicast address\n");
1133			}
1134		}
1135	}
1136}
1137
1138static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1139				 struct net_device *dev,
1140				 struct mlx4_en_dev *mdev)
1141{
1142	struct netdev_hw_addr *ha;
1143	struct mlx4_mac_entry *entry;
1144	struct hlist_node *tmp;
1145	bool found;
1146	u64 mac;
1147	int err = 0;
1148	struct hlist_head *bucket;
1149	unsigned int i;
1150	int removed = 0;
1151	u32 prev_flags;
1152
1153	/* Note that we do not need to protect our mac_hash traversal with rcu,
1154	 * since all modification code is protected by mdev->state_lock
1155	 */
1156
1157	/* find what to remove */
1158	for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1159		bucket = &priv->mac_hash[i];
1160		hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1161			found = false;
1162			netdev_for_each_uc_addr(ha, dev) {
1163				if (ether_addr_equal_64bits(entry->mac,
1164							    ha->addr)) {
1165					found = true;
1166					break;
1167				}
1168			}
1169
1170			/* MAC address of the port is not in uc list */
1171			if (ether_addr_equal_64bits(entry->mac,
1172						    priv->current_mac))
1173				found = true;
1174
1175			if (!found) {
1176				mac = ether_addr_to_u64(entry->mac);
1177				mlx4_en_uc_steer_release(priv, entry->mac,
1178							 priv->base_qpn,
1179							 entry->reg_id);
1180				mlx4_unregister_mac(mdev->dev, priv->port, mac);
1181
1182				hlist_del_rcu(&entry->hlist);
1183				en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1184				       entry->mac, priv->port);
1185				kfree_rcu(entry, rcu);
1186				++removed;
1187			}
1188		}
1189	}
1190
1191	/* if we didn't remove anything, there is no use in trying to add
1192	 * again once we are in a forced promisc mode state
1193	 */
1194	if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1195		return;
1196
1197	prev_flags = priv->flags;
1198	priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1199
1200	/* find what to add */
1201	netdev_for_each_uc_addr(ha, dev) {
1202		found = false;
1203		bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1204		hlist_for_each_entry(entry, bucket, hlist) {
1205			if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1206				found = true;
1207				break;
1208			}
1209		}
1210
1211		if (!found) {
1212			entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1213			if (!entry) {
1214				en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1215				       ha->addr, priv->port);
1216				priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1217				break;
1218			}
1219			mac = ether_addr_to_u64(ha->addr);
1220			memcpy(entry->mac, ha->addr, ETH_ALEN);
1221			err = mlx4_register_mac(mdev->dev, priv->port, mac);
1222			if (err < 0) {
1223				en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1224				       ha->addr, priv->port, err);
1225				kfree(entry);
1226				priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1227				break;
1228			}
1229			err = mlx4_en_uc_steer_add(priv, ha->addr,
1230						   &priv->base_qpn,
1231						   &entry->reg_id);
1232			if (err) {
1233				en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1234				       ha->addr, priv->port, err);
1235				mlx4_unregister_mac(mdev->dev, priv->port, mac);
1236				kfree(entry);
1237				priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1238				break;
1239			} else {
1240				unsigned int mac_hash;
1241				en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1242				       ha->addr, priv->port);
1243				mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1244				bucket = &priv->mac_hash[mac_hash];
1245				hlist_add_head_rcu(&entry->hlist, bucket);
1246			}
1247		}
1248	}
1249
1250	if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1251		en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1252			priv->port);
1253	} else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1254		en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1255			priv->port);
1256	}
1257}
1258
1259static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1260{
1261	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1262						 rx_mode_task);
1263	struct mlx4_en_dev *mdev = priv->mdev;
1264	struct net_device *dev = priv->dev;
1265
1266	mutex_lock(&mdev->state_lock);
1267	if (!mdev->device_up) {
1268		en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1269		goto out;
1270	}
1271	if (!priv->port_up) {
1272		en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1273		goto out;
1274	}
1275
1276	if (!netif_carrier_ok(dev)) {
1277		if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1278			if (priv->port_state.link_state) {
1279				netif_carrier_on(dev);
1280				en_dbg(LINK, priv, "Link Up\n");
1281			}
1282		}
1283	}
1284
1285	if (dev->priv_flags & IFF_UNICAST_FLT)
1286		mlx4_en_do_uc_filter(priv, dev, mdev);
1287
1288	/* Promsicuous mode: disable all filters */
1289	if ((dev->flags & IFF_PROMISC) ||
1290	    (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1291		mlx4_en_set_promisc_mode(priv, mdev);
1292		goto out;
1293	}
1294
1295	/* Not in promiscuous mode */
1296	if (priv->flags & MLX4_EN_FLAG_PROMISC)
1297		mlx4_en_clear_promisc_mode(priv, mdev);
1298
1299	mlx4_en_do_multicast(priv, dev, mdev);
1300out:
1301	mutex_unlock(&mdev->state_lock);
1302}
1303
1304static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1305{
1306	u64 reg_id;
1307	int err = 0;
1308	int *qpn = &priv->base_qpn;
1309	struct mlx4_mac_entry *entry;
1310
1311	err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1312	if (err)
1313		return err;
1314
1315	err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1316				       &priv->tunnel_reg_id);
1317	if (err)
1318		goto tunnel_err;
1319
1320	entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1321	if (!entry) {
1322		err = -ENOMEM;
1323		goto alloc_err;
1324	}
1325
1326	memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1327	memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1328	entry->reg_id = reg_id;
1329	hlist_add_head_rcu(&entry->hlist,
1330			   &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1331
1332	return 0;
1333
1334alloc_err:
1335	if (priv->tunnel_reg_id)
1336		mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1337
1338tunnel_err:
1339	mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1340	return err;
1341}
1342
1343static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1344{
1345	u64 mac;
1346	unsigned int i;
1347	int qpn = priv->base_qpn;
1348	struct hlist_head *bucket;
1349	struct hlist_node *tmp;
1350	struct mlx4_mac_entry *entry;
1351
1352	for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1353		bucket = &priv->mac_hash[i];
1354		hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1355			mac = ether_addr_to_u64(entry->mac);
1356			en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1357			       entry->mac);
1358			mlx4_en_uc_steer_release(priv, entry->mac,
1359						 qpn, entry->reg_id);
1360
1361			mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1362			hlist_del_rcu(&entry->hlist);
1363			kfree_rcu(entry, rcu);
1364		}
1365	}
1366
1367	if (priv->tunnel_reg_id) {
1368		mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1369		priv->tunnel_reg_id = 0;
1370	}
1371}
1372
1373static void mlx4_en_tx_timeout(struct net_device *dev, unsigned int txqueue)
1374{
1375	struct mlx4_en_priv *priv = netdev_priv(dev);
1376	struct mlx4_en_dev *mdev = priv->mdev;
1377	struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][txqueue];
1378
1379	if (netif_msg_timer(priv))
1380		en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1381
1382	en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1383		txqueue, tx_ring->qpn, tx_ring->sp_cqn,
1384		tx_ring->cons, tx_ring->prod);
1385
1386	priv->port_stats.tx_timeout++;
1387	if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state)) {
1388		en_dbg(DRV, priv, "Scheduling port restart\n");
1389		queue_work(mdev->workqueue, &priv->restart_task);
1390	}
1391}
1392
1393
1394static void
1395mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1396{
1397	struct mlx4_en_priv *priv = netdev_priv(dev);
1398
1399	spin_lock_bh(&priv->stats_lock);
1400	mlx4_en_fold_software_stats(dev);
1401	netdev_stats_to_stats64(stats, &dev->stats);
1402	spin_unlock_bh(&priv->stats_lock);
1403}
1404
1405static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1406{
1407	struct mlx4_en_cq *cq;
1408	int i, t;
1409
1410	/* If we haven't received a specific coalescing setting
1411	 * (module param), we set the moderation parameters as follows:
1412	 * - moder_cnt is set to the number of mtu sized packets to
1413	 *   satisfy our coalescing target.
1414	 * - moder_time is set to a fixed value.
1415	 */
1416	priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1417	priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1418	priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1419	priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1420	en_dbg(INTR, priv, "Default coalescing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1421	       priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1422
1423	/* Setup cq moderation params */
1424	for (i = 0; i < priv->rx_ring_num; i++) {
1425		cq = priv->rx_cq[i];
1426		cq->moder_cnt = priv->rx_frames;
1427		cq->moder_time = priv->rx_usecs;
1428		priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1429		priv->last_moder_packets[i] = 0;
1430		priv->last_moder_bytes[i] = 0;
1431	}
1432
1433	for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1434		for (i = 0; i < priv->tx_ring_num[t]; i++) {
1435			cq = priv->tx_cq[t][i];
1436			cq->moder_cnt = priv->tx_frames;
1437			cq->moder_time = priv->tx_usecs;
1438		}
1439	}
1440
1441	/* Reset auto-moderation params */
1442	priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1443	priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1444	priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1445	priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1446	priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1447	priv->adaptive_rx_coal = 1;
1448	priv->last_moder_jiffies = 0;
1449	priv->last_moder_tx_packets = 0;
1450}
1451
1452static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1453{
1454	unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1455	u32 pkt_rate_high, pkt_rate_low;
1456	struct mlx4_en_cq *cq;
1457	unsigned long packets;
1458	unsigned long rate;
1459	unsigned long avg_pkt_size;
1460	unsigned long rx_packets;
1461	unsigned long rx_bytes;
1462	unsigned long rx_pkt_diff;
1463	int moder_time;
1464	int ring, err;
1465
1466	if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1467		return;
1468
1469	pkt_rate_low = READ_ONCE(priv->pkt_rate_low);
1470	pkt_rate_high = READ_ONCE(priv->pkt_rate_high);
1471
1472	for (ring = 0; ring < priv->rx_ring_num; ring++) {
1473		rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1474		rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1475
1476		rx_pkt_diff = rx_packets - priv->last_moder_packets[ring];
1477		packets = rx_pkt_diff;
1478		rate = packets * HZ / period;
1479		avg_pkt_size = packets ? (rx_bytes -
1480				priv->last_moder_bytes[ring]) / packets : 0;
1481
1482		/* Apply auto-moderation only when packet rate
1483		 * exceeds a rate that it matters */
1484		if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1485		    avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1486			if (rate <= pkt_rate_low)
1487				moder_time = priv->rx_usecs_low;
1488			else if (rate >= pkt_rate_high)
1489				moder_time = priv->rx_usecs_high;
1490			else
1491				moder_time = (rate - pkt_rate_low) *
1492					(priv->rx_usecs_high - priv->rx_usecs_low) /
1493					(pkt_rate_high - pkt_rate_low) +
1494					priv->rx_usecs_low;
1495		} else {
1496			moder_time = priv->rx_usecs_low;
1497		}
1498
1499		cq = priv->rx_cq[ring];
1500		if (moder_time != priv->last_moder_time[ring] ||
1501		    cq->moder_cnt != priv->rx_frames) {
1502			priv->last_moder_time[ring] = moder_time;
1503			cq->moder_time = moder_time;
1504			cq->moder_cnt = priv->rx_frames;
1505			err = mlx4_en_set_cq_moder(priv, cq);
1506			if (err)
1507				en_err(priv, "Failed modifying moderation for cq:%d\n",
1508				       ring);
1509		}
1510		priv->last_moder_packets[ring] = rx_packets;
1511		priv->last_moder_bytes[ring] = rx_bytes;
1512	}
1513
1514	priv->last_moder_jiffies = jiffies;
1515}
1516
1517static void mlx4_en_do_get_stats(struct work_struct *work)
1518{
1519	struct delayed_work *delay = to_delayed_work(work);
1520	struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1521						 stats_task);
1522	struct mlx4_en_dev *mdev = priv->mdev;
1523	int err;
1524
1525	mutex_lock(&mdev->state_lock);
1526	if (mdev->device_up) {
1527		if (priv->port_up) {
1528			err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1529			if (err)
1530				en_dbg(HW, priv, "Could not update stats\n");
1531
1532			mlx4_en_auto_moderation(priv);
1533		}
1534
1535		queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1536	}
1537	if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1538		mlx4_en_do_set_mac(priv, priv->current_mac);
1539		mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1540	}
1541	mutex_unlock(&mdev->state_lock);
1542}
1543
1544/* mlx4_en_service_task - Run service task for tasks that needed to be done
1545 * periodically
1546 */
1547static void mlx4_en_service_task(struct work_struct *work)
1548{
1549	struct delayed_work *delay = to_delayed_work(work);
1550	struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1551						 service_task);
1552	struct mlx4_en_dev *mdev = priv->mdev;
1553
1554	mutex_lock(&mdev->state_lock);
1555	if (mdev->device_up) {
1556		if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1557			mlx4_en_ptp_overflow_check(mdev);
1558
1559		mlx4_en_recover_from_oom(priv);
1560		queue_delayed_work(mdev->workqueue, &priv->service_task,
1561				   SERVICE_TASK_DELAY);
1562	}
1563	mutex_unlock(&mdev->state_lock);
1564}
1565
1566static void mlx4_en_linkstate(struct mlx4_en_priv *priv)
1567{
1568	struct mlx4_en_port_state *port_state = &priv->port_state;
1569	struct mlx4_en_dev *mdev = priv->mdev;
1570	struct net_device *dev = priv->dev;
1571	bool up;
1572
1573	if (mlx4_en_QUERY_PORT(mdev, priv->port))
1574		port_state->link_state = MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN;
1575
1576	up = port_state->link_state == MLX4_PORT_STATE_DEV_EVENT_PORT_UP;
1577	if (up == netif_carrier_ok(dev))
1578		netif_carrier_event(dev);
1579	if (!up) {
1580		en_info(priv, "Link Down\n");
1581		netif_carrier_off(dev);
1582	} else {
1583		en_info(priv, "Link Up\n");
1584		netif_carrier_on(dev);
1585	}
1586}
1587
1588static void mlx4_en_linkstate_work(struct work_struct *work)
1589{
1590	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1591						 linkstate_task);
1592	struct mlx4_en_dev *mdev = priv->mdev;
1593
1594	mutex_lock(&mdev->state_lock);
1595	mlx4_en_linkstate(priv);
1596	mutex_unlock(&mdev->state_lock);
1597}
1598
1599static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1600{
1601	struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1602	int numa_node = priv->mdev->dev->numa_node;
1603
1604	if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1605		return -ENOMEM;
1606
1607	cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1608			ring->affinity_mask);
1609	return 0;
1610}
1611
1612static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1613{
1614	free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1615}
1616
1617static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1618				      int tx_ring_idx)
1619{
1620	struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1621	int rr_index = tx_ring_idx;
1622
1623	tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1624	tx_ring->recycle_ring = priv->rx_ring[rr_index];
1625	en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1626	       TX_XDP, tx_ring_idx, rr_index);
1627}
1628
1629int mlx4_en_start_port(struct net_device *dev)
1630{
1631	struct mlx4_en_priv *priv = netdev_priv(dev);
1632	struct mlx4_en_dev *mdev = priv->mdev;
1633	struct mlx4_en_cq *cq;
1634	struct mlx4_en_tx_ring *tx_ring;
1635	int rx_index = 0;
1636	int err = 0;
1637	int i, t;
1638	int j;
1639	u8 mc_list[16] = {0};
1640
1641	if (priv->port_up) {
1642		en_dbg(DRV, priv, "start port called while port already up\n");
1643		return 0;
1644	}
1645
1646	INIT_LIST_HEAD(&priv->mc_list);
1647	INIT_LIST_HEAD(&priv->curr_list);
1648	INIT_LIST_HEAD(&priv->ethtool_list);
1649	memset(&priv->ethtool_rules[0], 0,
1650	       sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1651
1652	/* Calculate Rx buf size */
1653	WRITE_ONCE(dev->mtu, min(dev->mtu, priv->max_mtu));
1654	mlx4_en_calc_rx_buf(dev);
1655	en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1656
1657	/* Configure rx cq's and rings */
1658	err = mlx4_en_activate_rx_rings(priv);
1659	if (err) {
1660		en_err(priv, "Failed to activate RX rings\n");
1661		return err;
1662	}
1663	for (i = 0; i < priv->rx_ring_num; i++) {
1664		cq = priv->rx_cq[i];
1665
1666		err = mlx4_en_init_affinity_hint(priv, i);
1667		if (err) {
1668			en_err(priv, "Failed preparing IRQ affinity hint\n");
1669			goto cq_err;
1670		}
1671
1672		err = mlx4_en_activate_cq(priv, cq, i);
1673		if (err) {
1674			en_err(priv, "Failed activating Rx CQ\n");
1675			mlx4_en_free_affinity_hint(priv, i);
1676			goto cq_err;
1677		}
1678
1679		for (j = 0; j < cq->size; j++) {
1680			struct mlx4_cqe *cqe = NULL;
1681
1682			cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1683			      priv->cqe_factor;
1684			cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1685		}
1686
1687		err = mlx4_en_set_cq_moder(priv, cq);
1688		if (err) {
1689			en_err(priv, "Failed setting cq moderation parameters\n");
1690			mlx4_en_deactivate_cq(priv, cq);
1691			mlx4_en_free_affinity_hint(priv, i);
1692			goto cq_err;
1693		}
1694		mlx4_en_arm_cq(priv, cq);
1695		priv->rx_ring[i]->cqn = cq->mcq.cqn;
1696		++rx_index;
1697	}
1698
1699	/* Set qp number */
1700	en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1701	err = mlx4_en_get_qp(priv);
1702	if (err) {
1703		en_err(priv, "Failed getting eth qp\n");
1704		goto cq_err;
1705	}
1706	mdev->mac_removed[priv->port] = 0;
1707
1708	priv->counter_index =
1709			mlx4_get_default_counter_index(mdev->dev, priv->port);
1710
1711	err = mlx4_en_config_rss_steer(priv);
1712	if (err) {
1713		en_err(priv, "Failed configuring rss steering\n");
1714		goto mac_err;
1715	}
1716
1717	err = mlx4_en_create_drop_qp(priv);
1718	if (err)
1719		goto rss_err;
1720
1721	/* Configure tx cq's and rings */
1722	for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1723		u8 num_tx_rings_p_up = t == TX ?
1724			priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1725
1726		for (i = 0; i < priv->tx_ring_num[t]; i++) {
1727			/* Configure cq */
1728			cq = priv->tx_cq[t][i];
1729			err = mlx4_en_activate_cq(priv, cq, i);
1730			if (err) {
1731				en_err(priv, "Failed allocating Tx CQ\n");
1732				goto tx_err;
1733			}
1734			err = mlx4_en_set_cq_moder(priv, cq);
1735			if (err) {
1736				en_err(priv, "Failed setting cq moderation parameters\n");
1737				mlx4_en_deactivate_cq(priv, cq);
1738				goto tx_err;
1739			}
1740			en_dbg(DRV, priv,
1741			       "Resetting index of collapsed CQ:%d to -1\n", i);
1742			cq->buf->wqe_index = cpu_to_be16(0xffff);
1743
1744			/* Configure ring */
1745			tx_ring = priv->tx_ring[t][i];
1746			err = mlx4_en_activate_tx_ring(priv, tx_ring,
1747						       cq->mcq.cqn,
1748						       i / num_tx_rings_p_up);
1749			if (err) {
1750				en_err(priv, "Failed allocating Tx ring\n");
1751				mlx4_en_deactivate_cq(priv, cq);
1752				goto tx_err;
1753			}
1754			clear_bit(MLX4_EN_TX_RING_STATE_RECOVERING, &tx_ring->state);
1755			if (t != TX_XDP) {
1756				tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1757				tx_ring->recycle_ring = NULL;
1758
1759				/* Arm CQ for TX completions */
1760				mlx4_en_arm_cq(priv, cq);
1761
1762			} else {
1763				mlx4_en_init_tx_xdp_ring_descs(priv, tx_ring);
1764				mlx4_en_init_recycle_ring(priv, i);
1765				/* XDP TX CQ should never be armed */
1766			}
1767
1768			/* Set initial ownership of all Tx TXBBs to SW (1) */
1769			for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1770				*((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1771		}
1772	}
1773
1774	/* Configure port */
1775	err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1776				    priv->rx_skb_size + ETH_FCS_LEN,
1777				    priv->prof->tx_pause,
1778				    priv->prof->tx_ppp,
1779				    priv->prof->rx_pause,
1780				    priv->prof->rx_ppp);
1781	if (err) {
1782		en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1783		       priv->port, err);
1784		goto tx_err;
1785	}
1786
1787	err = mlx4_SET_PORT_user_mtu(mdev->dev, priv->port, dev->mtu);
1788	if (err) {
1789		en_err(priv, "Failed to pass user MTU(%d) to Firmware for port %d, with error %d\n",
1790		       dev->mtu, priv->port, err);
1791		goto tx_err;
1792	}
1793
1794	/* Set default qp number */
1795	err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1796	if (err) {
1797		en_err(priv, "Failed setting default qp numbers\n");
1798		goto tx_err;
1799	}
1800
1801	if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1802		err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1803		if (err) {
1804			en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1805			       err);
1806			goto tx_err;
1807		}
1808	}
1809
1810	/* Init port */
1811	en_dbg(HW, priv, "Initializing port\n");
1812	err = mlx4_INIT_PORT(mdev->dev, priv->port);
1813	if (err) {
1814		en_err(priv, "Failed Initializing port\n");
1815		goto tx_err;
1816	}
1817
1818	/* Set Unicast and VXLAN steering rules */
1819	if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1820	    mlx4_en_set_rss_steer_rules(priv))
1821		mlx4_warn(mdev, "Failed setting steering rules\n");
1822
1823	/* Attach rx QP to broadcast address */
1824	eth_broadcast_addr(&mc_list[10]);
1825	mc_list[5] = priv->port; /* needed for B0 steering support */
1826	if (mlx4_multicast_attach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1827				  priv->port, 0, MLX4_PROT_ETH,
1828				  &priv->broadcast_id))
1829		mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1830
1831	/* Must redo promiscuous mode setup. */
1832	priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1833
1834	/* Schedule multicast task to populate multicast list */
1835	queue_work(mdev->workqueue, &priv->rx_mode_task);
1836
1837	if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1838		udp_tunnel_nic_reset_ntf(dev);
1839
1840	priv->port_up = true;
1841
1842	/* Process all completions if exist to prevent
1843	 * the queues freezing if they are full
1844	 */
1845	for (i = 0; i < priv->rx_ring_num; i++) {
1846		local_bh_disable();
1847		napi_schedule(&priv->rx_cq[i]->napi);
1848		local_bh_enable();
1849	}
1850
1851	clear_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state);
1852	netif_tx_start_all_queues(dev);
1853	netif_device_attach(dev);
1854
1855	return 0;
1856
1857tx_err:
1858	if (t == MLX4_EN_NUM_TX_TYPES) {
1859		t--;
1860		i = priv->tx_ring_num[t];
1861	}
1862	while (t >= 0) {
1863		while (i--) {
1864			mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1865			mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1866		}
1867		if (!t--)
1868			break;
1869		i = priv->tx_ring_num[t];
1870	}
1871	mlx4_en_destroy_drop_qp(priv);
1872rss_err:
1873	mlx4_en_release_rss_steer(priv);
1874mac_err:
1875	mlx4_en_put_qp(priv);
1876cq_err:
1877	while (rx_index--) {
1878		mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1879		mlx4_en_free_affinity_hint(priv, rx_index);
1880	}
1881	for (i = 0; i < priv->rx_ring_num; i++)
1882		mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1883
1884	return err; /* need to close devices */
1885}
1886
1887
1888void mlx4_en_stop_port(struct net_device *dev, int detach)
1889{
1890	struct mlx4_en_priv *priv = netdev_priv(dev);
1891	struct mlx4_en_dev *mdev = priv->mdev;
1892	struct mlx4_en_mc_list *mclist, *tmp;
1893	struct ethtool_flow_id *flow, *tmp_flow;
1894	int i, t;
1895	u8 mc_list[16] = {0};
1896
1897	if (!priv->port_up) {
1898		en_dbg(DRV, priv, "stop port called while port already down\n");
1899		return;
1900	}
1901
1902	/* close port*/
1903	mlx4_CLOSE_PORT(mdev->dev, priv->port);
1904
1905	/* Synchronize with tx routine */
1906	netif_tx_lock_bh(dev);
1907	if (detach)
1908		netif_device_detach(dev);
1909	netif_tx_stop_all_queues(dev);
1910	netif_tx_unlock_bh(dev);
1911
1912	netif_tx_disable(dev);
1913
1914	spin_lock_bh(&priv->stats_lock);
1915	mlx4_en_fold_software_stats(dev);
1916	/* Set port as not active */
1917	priv->port_up = false;
1918	spin_unlock_bh(&priv->stats_lock);
1919
1920	priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1921
1922	/* Promsicuous mode */
1923	if (mdev->dev->caps.steering_mode ==
1924	    MLX4_STEERING_MODE_DEVICE_MANAGED) {
1925		priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1926				 MLX4_EN_FLAG_MC_PROMISC);
1927		mlx4_flow_steer_promisc_remove(mdev->dev,
1928					       priv->port,
1929					       MLX4_FS_ALL_DEFAULT);
1930		mlx4_flow_steer_promisc_remove(mdev->dev,
1931					       priv->port,
1932					       MLX4_FS_MC_DEFAULT);
1933	} else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1934		priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1935
1936		/* Disable promiscouos mode */
1937		mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1938					    priv->port);
1939
1940		/* Disable Multicast promisc */
1941		if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1942			mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1943						      priv->port);
1944			priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1945		}
1946	}
1947
1948	/* Detach All multicasts */
1949	eth_broadcast_addr(&mc_list[10]);
1950	mc_list[5] = priv->port; /* needed for B0 steering support */
1951	mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1952			      MLX4_PROT_ETH, priv->broadcast_id);
1953	list_for_each_entry(mclist, &priv->curr_list, list) {
1954		memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1955		mc_list[5] = priv->port;
1956		mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp,
1957				      mc_list, MLX4_PROT_ETH, mclist->reg_id);
1958		if (mclist->tunnel_reg_id)
1959			mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1960	}
1961	mlx4_en_clear_list(dev);
1962	list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1963		list_del(&mclist->list);
1964		kfree(mclist);
1965	}
1966
1967	/* Flush multicast filter */
1968	mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1969
1970	/* Remove flow steering rules for the port*/
1971	if (mdev->dev->caps.steering_mode ==
1972	    MLX4_STEERING_MODE_DEVICE_MANAGED) {
1973		ASSERT_RTNL();
1974		list_for_each_entry_safe(flow, tmp_flow,
1975					 &priv->ethtool_list, list) {
1976			mlx4_flow_detach(mdev->dev, flow->id);
1977			list_del(&flow->list);
1978		}
1979	}
1980
1981	mlx4_en_destroy_drop_qp(priv);
1982
1983	/* Free TX Rings */
1984	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1985		for (i = 0; i < priv->tx_ring_num[t]; i++) {
1986			mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1987			mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1988		}
1989	}
1990	msleep(10);
1991
1992	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1993		for (i = 0; i < priv->tx_ring_num[t]; i++)
1994			mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]);
1995
1996	if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1997		mlx4_en_delete_rss_steer_rules(priv);
1998
1999	/* Free RSS qps */
2000	mlx4_en_release_rss_steer(priv);
2001
2002	/* Unregister Mac address for the port */
2003	mlx4_en_put_qp(priv);
2004	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
2005		mdev->mac_removed[priv->port] = 1;
2006
2007	/* Free RX Rings */
2008	for (i = 0; i < priv->rx_ring_num; i++) {
2009		struct mlx4_en_cq *cq = priv->rx_cq[i];
2010
2011		napi_synchronize(&cq->napi);
2012		mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
2013		mlx4_en_deactivate_cq(priv, cq);
2014
2015		mlx4_en_free_affinity_hint(priv, i);
2016	}
2017}
2018
2019static void mlx4_en_restart(struct work_struct *work)
2020{
2021	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2022						 restart_task);
2023	struct mlx4_en_dev *mdev = priv->mdev;
2024	struct net_device *dev = priv->dev;
2025
2026	en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
2027
2028	rtnl_lock();
2029	mutex_lock(&mdev->state_lock);
2030	if (priv->port_up) {
2031		mlx4_en_stop_port(dev, 1);
2032		if (mlx4_en_start_port(dev))
2033			en_err(priv, "Failed restarting port %d\n", priv->port);
2034	}
2035	mutex_unlock(&mdev->state_lock);
2036	rtnl_unlock();
2037}
2038
2039static void mlx4_en_clear_stats(struct net_device *dev)
2040{
2041	struct mlx4_en_priv *priv = netdev_priv(dev);
2042	struct mlx4_en_dev *mdev = priv->mdev;
2043	struct mlx4_en_tx_ring **tx_ring;
2044	int i;
2045
2046	if (!mlx4_is_slave(mdev->dev))
2047		if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
2048			en_dbg(HW, priv, "Failed dumping statistics\n");
2049
2050	memset(&priv->pkstats, 0, sizeof(priv->pkstats));
2051	memset(&priv->port_stats, 0, sizeof(priv->port_stats));
2052	memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
2053	memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
2054	memset(&priv->rx_priority_flowstats, 0,
2055	       sizeof(priv->rx_priority_flowstats));
2056	memset(&priv->tx_priority_flowstats, 0,
2057	       sizeof(priv->tx_priority_flowstats));
2058	memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
2059
2060	tx_ring = priv->tx_ring[TX];
2061	for (i = 0; i < priv->tx_ring_num[TX]; i++) {
2062		tx_ring[i]->bytes = 0;
2063		tx_ring[i]->packets = 0;
2064		tx_ring[i]->tx_csum = 0;
2065		tx_ring[i]->tx_dropped = 0;
2066		tx_ring[i]->queue_stopped = 0;
2067		tx_ring[i]->wake_queue = 0;
2068		tx_ring[i]->tso_packets = 0;
2069		tx_ring[i]->xmit_more = 0;
2070	}
2071	for (i = 0; i < priv->rx_ring_num; i++) {
2072		priv->rx_ring[i]->bytes = 0;
2073		priv->rx_ring[i]->packets = 0;
2074		priv->rx_ring[i]->csum_ok = 0;
2075		priv->rx_ring[i]->csum_none = 0;
2076		priv->rx_ring[i]->csum_complete = 0;
2077		priv->rx_ring[i]->alloc_fail = 0;
2078	}
2079}
2080
2081static int mlx4_en_open(struct net_device *dev)
2082{
2083	struct mlx4_en_priv *priv = netdev_priv(dev);
2084	struct mlx4_en_dev *mdev = priv->mdev;
2085	int err = 0;
2086
2087	mutex_lock(&mdev->state_lock);
2088
2089	if (!mdev->device_up) {
2090		en_err(priv, "Cannot open - device down/disabled\n");
2091		err = -EBUSY;
2092		goto out;
2093	}
2094
2095	/* Reset HW statistics and SW counters */
2096	mlx4_en_clear_stats(dev);
2097
2098	err = mlx4_en_start_port(dev);
2099	if (err) {
2100		en_err(priv, "Failed starting port:%d\n", priv->port);
2101		goto out;
2102	}
2103	mlx4_en_linkstate(priv);
2104out:
2105	mutex_unlock(&mdev->state_lock);
2106	return err;
2107}
2108
2109
2110static int mlx4_en_close(struct net_device *dev)
2111{
2112	struct mlx4_en_priv *priv = netdev_priv(dev);
2113	struct mlx4_en_dev *mdev = priv->mdev;
2114
2115	en_dbg(IFDOWN, priv, "Close port called\n");
2116
2117	mutex_lock(&mdev->state_lock);
2118
2119	mlx4_en_stop_port(dev, 0);
2120	netif_carrier_off(dev);
2121
2122	mutex_unlock(&mdev->state_lock);
2123	return 0;
2124}
2125
2126static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2127{
2128	int i, t;
2129
2130#ifdef CONFIG_RFS_ACCEL
2131	priv->dev->rx_cpu_rmap = NULL;
2132#endif
2133
2134	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2135		for (i = 0; i < priv->tx_ring_num[t]; i++) {
2136			if (priv->tx_ring[t] && priv->tx_ring[t][i])
2137				mlx4_en_destroy_tx_ring(priv,
2138							&priv->tx_ring[t][i]);
2139			if (priv->tx_cq[t] && priv->tx_cq[t][i])
2140				mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2141		}
2142		kfree(priv->tx_ring[t]);
2143		kfree(priv->tx_cq[t]);
2144	}
2145
2146	for (i = 0; i < priv->rx_ring_num; i++) {
2147		if (priv->rx_ring[i])
2148			mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2149				priv->prof->rx_ring_size, priv->stride);
2150		if (priv->rx_cq[i])
2151			mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2152	}
2153
2154}
2155
2156static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2157{
2158	struct mlx4_en_port_profile *prof = priv->prof;
2159	int i, t;
2160	int node;
2161
2162	/* Create tx Rings */
2163	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2164		for (i = 0; i < priv->tx_ring_num[t]; i++) {
2165			node = cpu_to_node(i % num_online_cpus());
2166			if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i],
2167					      prof->tx_ring_size, i, t, node))
2168				goto err;
2169
2170			if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i],
2171						   prof->tx_ring_size,
2172						   TXBB_SIZE, node, i))
2173				goto err;
2174		}
2175	}
2176
2177	/* Create rx Rings */
2178	for (i = 0; i < priv->rx_ring_num; i++) {
2179		node = cpu_to_node(i % num_online_cpus());
2180		if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2181				      prof->rx_ring_size, i, RX, node))
2182			goto err;
2183
2184		if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2185					   prof->rx_ring_size, priv->stride,
2186					   node, i))
2187			goto err;
2188
2189	}
2190
2191#ifdef CONFIG_RFS_ACCEL
2192	priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2193#endif
2194
2195	return 0;
2196
2197err:
2198	en_err(priv, "Failed to allocate NIC resources\n");
2199	for (i = 0; i < priv->rx_ring_num; i++) {
2200		if (priv->rx_ring[i])
2201			mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2202						prof->rx_ring_size,
2203						priv->stride);
2204		if (priv->rx_cq[i])
2205			mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2206	}
2207	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2208		for (i = 0; i < priv->tx_ring_num[t]; i++) {
2209			if (priv->tx_ring[t][i])
2210				mlx4_en_destroy_tx_ring(priv,
2211							&priv->tx_ring[t][i]);
2212			if (priv->tx_cq[t][i])
2213				mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2214		}
2215	}
2216	return -ENOMEM;
2217}
2218
2219
2220static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2221			     struct mlx4_en_priv *src,
2222			     struct mlx4_en_port_profile *prof)
2223{
2224	int t;
2225
2226	memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2227	       sizeof(dst->hwtstamp_config));
2228	dst->num_tx_rings_p_up = prof->num_tx_rings_p_up;
2229	dst->rx_ring_num = prof->rx_ring_num;
2230	dst->flags = prof->flags;
2231	dst->mdev = src->mdev;
2232	dst->port = src->port;
2233	dst->dev = src->dev;
2234	dst->prof = prof;
2235	dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2236					 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2237
2238	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2239		dst->tx_ring_num[t] = prof->tx_ring_num[t];
2240		if (!dst->tx_ring_num[t])
2241			continue;
2242
2243		dst->tx_ring[t] = kcalloc(MAX_TX_RINGS,
2244					  sizeof(struct mlx4_en_tx_ring *),
2245					  GFP_KERNEL);
2246		if (!dst->tx_ring[t])
2247			goto err_free_tx;
2248
2249		dst->tx_cq[t] = kcalloc(MAX_TX_RINGS,
2250					sizeof(struct mlx4_en_cq *),
2251					GFP_KERNEL);
2252		if (!dst->tx_cq[t]) {
2253			kfree(dst->tx_ring[t]);
2254			goto err_free_tx;
2255		}
2256	}
2257
2258	return 0;
2259
2260err_free_tx:
2261	while (t--) {
2262		kfree(dst->tx_ring[t]);
2263		kfree(dst->tx_cq[t]);
2264	}
2265	return -ENOMEM;
2266}
2267
2268static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2269				struct mlx4_en_priv *src)
2270{
2271	int t;
2272	memcpy(dst->rx_ring, src->rx_ring,
2273	       sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2274	memcpy(dst->rx_cq, src->rx_cq,
2275	       sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2276	memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2277	       sizeof(dst->hwtstamp_config));
2278	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2279		dst->tx_ring_num[t] = src->tx_ring_num[t];
2280		dst->tx_ring[t] = src->tx_ring[t];
2281		dst->tx_cq[t] = src->tx_cq[t];
2282	}
2283	dst->num_tx_rings_p_up = src->num_tx_rings_p_up;
2284	dst->rx_ring_num = src->rx_ring_num;
2285	memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2286}
2287
2288int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2289				struct mlx4_en_priv *tmp,
2290				struct mlx4_en_port_profile *prof,
2291				bool carry_xdp_prog)
2292{
2293	struct bpf_prog *xdp_prog;
2294	int i, t, ret;
2295
2296	ret = mlx4_en_copy_priv(tmp, priv, prof);
2297	if (ret) {
2298		en_warn(priv, "%s: mlx4_en_copy_priv() failed, return\n",
2299			__func__);
2300		return ret;
2301	}
2302
2303	if (mlx4_en_alloc_resources(tmp)) {
2304		en_warn(priv,
2305			"%s: Resource allocation failed, using previous configuration\n",
2306			__func__);
2307		for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2308			kfree(tmp->tx_ring[t]);
2309			kfree(tmp->tx_cq[t]);
2310		}
2311		return -ENOMEM;
2312	}
2313
2314	/* All rx_rings has the same xdp_prog.  Pick the first one. */
2315	xdp_prog = rcu_dereference_protected(
2316		priv->rx_ring[0]->xdp_prog,
2317		lockdep_is_held(&priv->mdev->state_lock));
2318
2319	if (xdp_prog && carry_xdp_prog) {
2320		bpf_prog_add(xdp_prog, tmp->rx_ring_num);
2321		for (i = 0; i < tmp->rx_ring_num; i++)
2322			rcu_assign_pointer(tmp->rx_ring[i]->xdp_prog,
2323					   xdp_prog);
2324	}
2325
2326	return 0;
2327}
2328
2329void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2330				    struct mlx4_en_priv *tmp)
2331{
2332	mlx4_en_free_resources(priv);
2333	mlx4_en_update_priv(priv, tmp);
2334}
2335
2336void mlx4_en_destroy_netdev(struct net_device *dev)
2337{
2338	struct mlx4_en_priv *priv = netdev_priv(dev);
2339	struct mlx4_en_dev *mdev = priv->mdev;
2340
2341	en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2342
2343	/* Unregister device - this will close the port if it was up */
2344	if (priv->registered)
2345		unregister_netdev(dev);
2346
2347	if (priv->allocated)
2348		mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2349
2350	cancel_delayed_work(&priv->stats_task);
2351	cancel_delayed_work(&priv->service_task);
2352	/* flush any pending task for this netdev */
2353	flush_workqueue(mdev->workqueue);
2354
2355	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2356		mlx4_en_remove_timestamp(mdev);
2357
2358	/* Detach the netdev so tasks would not attempt to access it */
2359	mutex_lock(&mdev->state_lock);
2360	mdev->pndev[priv->port] = NULL;
2361	mdev->upper[priv->port] = NULL;
2362
2363#ifdef CONFIG_RFS_ACCEL
2364	mlx4_en_cleanup_filters(priv);
2365#endif
2366
2367	mlx4_en_free_resources(priv);
2368	mutex_unlock(&mdev->state_lock);
2369
2370	free_netdev(dev);
2371}
2372
2373static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2374{
2375	struct mlx4_en_priv *priv = netdev_priv(dev);
2376
2377	if (mtu > MLX4_EN_MAX_XDP_MTU) {
2378		en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2379		       mtu, MLX4_EN_MAX_XDP_MTU);
2380		return false;
2381	}
2382
2383	return true;
2384}
2385
2386static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2387{
2388	struct mlx4_en_priv *priv = netdev_priv(dev);
2389	struct mlx4_en_dev *mdev = priv->mdev;
2390	int err = 0;
2391
2392	en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2393		 dev->mtu, new_mtu);
2394
2395	if (priv->tx_ring_num[TX_XDP] &&
2396	    !mlx4_en_check_xdp_mtu(dev, new_mtu))
2397		return -EOPNOTSUPP;
2398
2399	WRITE_ONCE(dev->mtu, new_mtu);
2400
2401	if (netif_running(dev)) {
2402		mutex_lock(&mdev->state_lock);
2403		if (!mdev->device_up) {
2404			/* NIC is probably restarting - let restart task reset
2405			 * the port */
2406			en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2407		} else {
2408			mlx4_en_stop_port(dev, 1);
2409			err = mlx4_en_start_port(dev);
2410			if (err) {
2411				en_err(priv, "Failed restarting port:%d\n",
2412					 priv->port);
2413				if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING,
2414						      &priv->state))
2415					queue_work(mdev->workqueue, &priv->restart_task);
2416			}
2417		}
2418		mutex_unlock(&mdev->state_lock);
2419	}
2420	return 0;
2421}
2422
2423static int mlx4_en_hwtstamp_set(struct net_device *dev,
2424				struct kernel_hwtstamp_config *config,
2425				struct netlink_ext_ack *extack)
2426{
2427	struct mlx4_en_priv *priv = netdev_priv(dev);
2428	struct mlx4_en_dev *mdev = priv->mdev;
2429
2430	/* device doesn't support time stamping */
2431	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) {
2432		NL_SET_ERR_MSG_MOD(extack,
2433				   "device doesn't support time stamping");
2434		return -EINVAL;
2435	}
2436
2437	/* TX HW timestamp */
2438	switch (config->tx_type) {
2439	case HWTSTAMP_TX_OFF:
2440	case HWTSTAMP_TX_ON:
2441		break;
2442	default:
2443		return -ERANGE;
2444	}
2445
2446	/* RX HW timestamp */
2447	switch (config->rx_filter) {
2448	case HWTSTAMP_FILTER_NONE:
2449		break;
2450	case HWTSTAMP_FILTER_ALL:
2451	case HWTSTAMP_FILTER_SOME:
2452	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2453	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2454	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2455	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2456	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2457	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2458	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2459	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2460	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2461	case HWTSTAMP_FILTER_PTP_V2_EVENT:
2462	case HWTSTAMP_FILTER_PTP_V2_SYNC:
2463	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2464	case HWTSTAMP_FILTER_NTP_ALL:
2465		config->rx_filter = HWTSTAMP_FILTER_ALL;
2466		break;
2467	default:
2468		return -ERANGE;
2469	}
2470
2471	if (mlx4_en_reset_config(dev, config, dev->features)) {
2472		config->tx_type = HWTSTAMP_TX_OFF;
2473		config->rx_filter = HWTSTAMP_FILTER_NONE;
2474	}
2475
2476	return 0;
2477}
2478
2479static int mlx4_en_hwtstamp_get(struct net_device *dev,
2480				struct kernel_hwtstamp_config *config)
2481{
2482	struct mlx4_en_priv *priv = netdev_priv(dev);
2483
2484	*config = priv->hwtstamp_config;
2485	return 0;
2486}
2487
2488static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2489					      netdev_features_t features)
2490{
2491	struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2492	struct mlx4_en_dev *mdev = en_priv->mdev;
2493
2494	/* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2495	 * enable/disable make sure S-TAG flag is always in same state as
2496	 * C-TAG.
2497	 */
2498	if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2499	    !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2500		features |= NETIF_F_HW_VLAN_STAG_RX;
2501	else
2502		features &= ~NETIF_F_HW_VLAN_STAG_RX;
2503
2504	return features;
2505}
2506
2507static int mlx4_en_set_features(struct net_device *netdev,
2508		netdev_features_t features)
2509{
2510	struct mlx4_en_priv *priv = netdev_priv(netdev);
2511	bool reset = false;
2512	int ret = 0;
2513
2514	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2515		en_info(priv, "Turn %s RX-FCS\n",
2516			(features & NETIF_F_RXFCS) ? "ON" : "OFF");
2517		reset = true;
2518	}
2519
2520	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2521		u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2522
2523		en_info(priv, "Turn %s RX-ALL\n",
2524			ignore_fcs_value ? "ON" : "OFF");
2525		ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2526					      priv->port, ignore_fcs_value);
2527		if (ret)
2528			return ret;
2529	}
2530
2531	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2532		en_info(priv, "Turn %s RX vlan strip offload\n",
2533			(features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2534		reset = true;
2535	}
2536
2537	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2538		en_info(priv, "Turn %s TX vlan strip offload\n",
2539			(features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2540
2541	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2542		en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2543			(features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2544
2545	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2546		en_info(priv, "Turn %s loopback\n",
2547			(features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2548		mlx4_en_update_loopback_state(netdev, features);
2549	}
2550
2551	if (reset) {
2552		ret = mlx4_en_reset_config(netdev, &priv->hwtstamp_config,
2553					   features);
2554		if (ret)
2555			return ret;
2556	}
2557
2558	return 0;
2559}
2560
2561static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2562{
2563	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2564	struct mlx4_en_dev *mdev = en_priv->mdev;
2565
2566	return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac);
2567}
2568
2569static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
2570			       __be16 vlan_proto)
2571{
2572	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2573	struct mlx4_en_dev *mdev = en_priv->mdev;
2574
2575	return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos,
2576				vlan_proto);
2577}
2578
2579static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2580			       int max_tx_rate)
2581{
2582	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2583	struct mlx4_en_dev *mdev = en_priv->mdev;
2584
2585	return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2586				max_tx_rate);
2587}
2588
2589static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2590{
2591	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2592	struct mlx4_en_dev *mdev = en_priv->mdev;
2593
2594	return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2595}
2596
2597static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2598{
2599	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2600	struct mlx4_en_dev *mdev = en_priv->mdev;
2601
2602	return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2603}
2604
2605static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2606{
2607	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2608	struct mlx4_en_dev *mdev = en_priv->mdev;
2609
2610	return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2611}
2612
2613static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2614				struct ifla_vf_stats *vf_stats)
2615{
2616	struct mlx4_en_priv *en_priv = netdev_priv(dev);
2617	struct mlx4_en_dev *mdev = en_priv->mdev;
2618
2619	return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2620}
2621
2622#define PORT_ID_BYTE_LEN 8
2623static int mlx4_en_get_phys_port_id(struct net_device *dev,
2624				    struct netdev_phys_item_id *ppid)
2625{
2626	struct mlx4_en_priv *priv = netdev_priv(dev);
2627	struct mlx4_dev *mdev = priv->mdev->dev;
2628	int i;
2629	u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2630
2631	if (!phys_port_id)
2632		return -EOPNOTSUPP;
2633
2634	ppid->id_len = sizeof(phys_port_id);
2635	for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2636		ppid->id[i] =  phys_port_id & 0xff;
2637		phys_port_id >>= 8;
2638	}
2639	return 0;
2640}
2641
2642static int mlx4_udp_tunnel_sync(struct net_device *dev, unsigned int table)
2643{
2644	struct mlx4_en_priv *priv = netdev_priv(dev);
2645	struct udp_tunnel_info ti;
2646	int ret;
2647
2648	udp_tunnel_nic_get_port(dev, table, 0, &ti);
2649	priv->vxlan_port = ti.port;
2650
2651	ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2652	if (ret)
2653		return ret;
2654
2655	return mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2656				   VXLAN_STEER_BY_OUTER_MAC,
2657				   !!priv->vxlan_port);
2658}
2659
2660static const struct udp_tunnel_nic_info mlx4_udp_tunnels = {
2661	.sync_table	= mlx4_udp_tunnel_sync,
2662	.flags		= UDP_TUNNEL_NIC_INFO_IPV4_ONLY,
2663	.tables		= {
2664		{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
2665	},
2666};
2667
2668static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2669						struct net_device *dev,
2670						netdev_features_t features)
2671{
2672	features = vlan_features_check(skb, features);
2673	features = vxlan_features_check(skb, features);
2674
2675	/* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2676	 * support inner IPv6 checksums and segmentation so  we need to
2677	 * strip that feature if this is an IPv6 encapsulated frame.
2678	 */
2679	if (skb->encapsulation &&
2680	    (skb->ip_summed == CHECKSUM_PARTIAL)) {
2681		struct mlx4_en_priv *priv = netdev_priv(dev);
2682
2683		if (!priv->vxlan_port ||
2684		    (ip_hdr(skb)->version != 4) ||
2685		    (udp_hdr(skb)->dest != priv->vxlan_port))
2686			features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2687	}
2688
2689	return features;
2690}
2691
2692static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2693{
2694	struct mlx4_en_priv *priv = netdev_priv(dev);
2695	struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2696	struct mlx4_update_qp_params params;
2697	int err;
2698
2699	if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2700		return -EOPNOTSUPP;
2701
2702	/* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2703	if (maxrate >> 12) {
2704		params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2705		params.rate_val  = maxrate / 1000;
2706	} else if (maxrate) {
2707		params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2708		params.rate_val  = maxrate;
2709	} else { /* zero serves to revoke the QP rate-limitation */
2710		params.rate_unit = 0;
2711		params.rate_val  = 0;
2712	}
2713
2714	err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2715			     &params);
2716	return err;
2717}
2718
2719static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2720{
2721	struct mlx4_en_priv *priv = netdev_priv(dev);
2722	struct mlx4_en_dev *mdev = priv->mdev;
2723	struct mlx4_en_port_profile new_prof;
2724	struct bpf_prog *old_prog;
2725	struct mlx4_en_priv *tmp;
2726	int tx_changed = 0;
2727	int xdp_ring_num;
2728	int port_up = 0;
2729	int err;
2730	int i;
2731
2732	xdp_ring_num = prog ? priv->rx_ring_num : 0;
2733
2734	/* No need to reconfigure buffers when simply swapping the
2735	 * program for a new one.
2736	 */
2737	if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2738		if (prog)
2739			bpf_prog_add(prog, priv->rx_ring_num - 1);
2740
2741		mutex_lock(&mdev->state_lock);
2742		for (i = 0; i < priv->rx_ring_num; i++) {
2743			old_prog = rcu_dereference_protected(
2744					priv->rx_ring[i]->xdp_prog,
2745					lockdep_is_held(&mdev->state_lock));
2746			rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2747			if (old_prog)
2748				bpf_prog_put(old_prog);
2749		}
2750		mutex_unlock(&mdev->state_lock);
2751		return 0;
2752	}
2753
2754	if (!mlx4_en_check_xdp_mtu(dev, dev->mtu))
2755		return -EOPNOTSUPP;
2756
2757	tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
2758	if (!tmp)
2759		return -ENOMEM;
2760
2761	if (prog)
2762		bpf_prog_add(prog, priv->rx_ring_num - 1);
2763
2764	mutex_lock(&mdev->state_lock);
2765	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2766	new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2767
2768	if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2769		tx_changed = 1;
2770		new_prof.tx_ring_num[TX] =
2771			MAX_TX_RINGS - ALIGN(xdp_ring_num, priv->prof->num_up);
2772		en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2773	}
2774
2775	err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, false);
2776	if (err) {
2777		if (prog)
2778			bpf_prog_sub(prog, priv->rx_ring_num - 1);
2779		goto unlock_out;
2780	}
2781
2782	if (priv->port_up) {
2783		port_up = 1;
2784		mlx4_en_stop_port(dev, 1);
2785	}
2786
2787	mlx4_en_safe_replace_resources(priv, tmp);
2788	if (tx_changed)
2789		netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
2790
2791	for (i = 0; i < priv->rx_ring_num; i++) {
2792		old_prog = rcu_dereference_protected(
2793					priv->rx_ring[i]->xdp_prog,
2794					lockdep_is_held(&mdev->state_lock));
2795		rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2796		if (old_prog)
2797			bpf_prog_put(old_prog);
2798	}
2799
2800	if (port_up) {
2801		err = mlx4_en_start_port(dev);
2802		if (err) {
2803			en_err(priv, "Failed starting port %d for XDP change\n",
2804			       priv->port);
2805			if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state))
2806				queue_work(mdev->workqueue, &priv->restart_task);
2807		}
2808	}
2809
2810unlock_out:
2811	mutex_unlock(&mdev->state_lock);
2812	kfree(tmp);
2813	return err;
2814}
2815
2816static int mlx4_xdp(struct net_device *dev, struct netdev_bpf *xdp)
2817{
2818	switch (xdp->command) {
2819	case XDP_SETUP_PROG:
2820		return mlx4_xdp_set(dev, xdp->prog);
2821	default:
2822		return -EINVAL;
2823	}
2824}
2825
2826static const struct net_device_ops mlx4_netdev_ops = {
2827	.ndo_open		= mlx4_en_open,
2828	.ndo_stop		= mlx4_en_close,
2829	.ndo_start_xmit		= mlx4_en_xmit,
2830	.ndo_select_queue	= mlx4_en_select_queue,
2831	.ndo_get_stats64	= mlx4_en_get_stats64,
2832	.ndo_set_rx_mode	= mlx4_en_set_rx_mode,
2833	.ndo_set_mac_address	= mlx4_en_set_mac,
2834	.ndo_validate_addr	= eth_validate_addr,
2835	.ndo_change_mtu		= mlx4_en_change_mtu,
2836	.ndo_tx_timeout		= mlx4_en_tx_timeout,
2837	.ndo_vlan_rx_add_vid	= mlx4_en_vlan_rx_add_vid,
2838	.ndo_vlan_rx_kill_vid	= mlx4_en_vlan_rx_kill_vid,
2839	.ndo_set_features	= mlx4_en_set_features,
2840	.ndo_fix_features	= mlx4_en_fix_features,
2841	.ndo_setup_tc		= __mlx4_en_setup_tc,
2842#ifdef CONFIG_RFS_ACCEL
2843	.ndo_rx_flow_steer	= mlx4_en_filter_rfs,
2844#endif
2845	.ndo_get_phys_port_id	= mlx4_en_get_phys_port_id,
2846	.ndo_features_check	= mlx4_en_features_check,
2847	.ndo_set_tx_maxrate	= mlx4_en_set_tx_maxrate,
2848	.ndo_bpf		= mlx4_xdp,
2849	.ndo_hwtstamp_get	= mlx4_en_hwtstamp_get,
2850	.ndo_hwtstamp_set	= mlx4_en_hwtstamp_set,
2851};
2852
2853static const struct net_device_ops mlx4_netdev_ops_master = {
2854	.ndo_open		= mlx4_en_open,
2855	.ndo_stop		= mlx4_en_close,
2856	.ndo_start_xmit		= mlx4_en_xmit,
2857	.ndo_select_queue	= mlx4_en_select_queue,
2858	.ndo_get_stats64	= mlx4_en_get_stats64,
2859	.ndo_set_rx_mode	= mlx4_en_set_rx_mode,
2860	.ndo_set_mac_address	= mlx4_en_set_mac,
2861	.ndo_validate_addr	= eth_validate_addr,
2862	.ndo_change_mtu		= mlx4_en_change_mtu,
2863	.ndo_tx_timeout		= mlx4_en_tx_timeout,
2864	.ndo_vlan_rx_add_vid	= mlx4_en_vlan_rx_add_vid,
2865	.ndo_vlan_rx_kill_vid	= mlx4_en_vlan_rx_kill_vid,
2866	.ndo_set_vf_mac		= mlx4_en_set_vf_mac,
2867	.ndo_set_vf_vlan	= mlx4_en_set_vf_vlan,
2868	.ndo_set_vf_rate	= mlx4_en_set_vf_rate,
2869	.ndo_set_vf_spoofchk	= mlx4_en_set_vf_spoofchk,
2870	.ndo_set_vf_link_state	= mlx4_en_set_vf_link_state,
2871	.ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2872	.ndo_get_vf_config	= mlx4_en_get_vf_config,
2873	.ndo_set_features	= mlx4_en_set_features,
2874	.ndo_fix_features	= mlx4_en_fix_features,
2875	.ndo_setup_tc		= __mlx4_en_setup_tc,
2876#ifdef CONFIG_RFS_ACCEL
2877	.ndo_rx_flow_steer	= mlx4_en_filter_rfs,
2878#endif
2879	.ndo_get_phys_port_id	= mlx4_en_get_phys_port_id,
2880	.ndo_features_check	= mlx4_en_features_check,
2881	.ndo_set_tx_maxrate	= mlx4_en_set_tx_maxrate,
2882	.ndo_bpf		= mlx4_xdp,
2883};
2884
2885static const struct xdp_metadata_ops mlx4_xdp_metadata_ops = {
2886	.xmo_rx_timestamp		= mlx4_en_xdp_rx_timestamp,
2887	.xmo_rx_hash			= mlx4_en_xdp_rx_hash,
2888};
2889
2890int mlx4_en_netdev_event(struct notifier_block *this,
2891			 unsigned long event, void *ptr)
2892{
2893	struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2894	u8 port = 0;
2895	struct mlx4_en_dev *mdev;
2896	struct mlx4_dev *dev;
2897	int i, num_eth_ports = 0;
2898	bool do_bond = true;
2899	u8 v2p_port1 = 0;
2900	u8 v2p_port2 = 0;
2901
2902	if (!net_eq(dev_net(ndev), &init_net))
2903		return NOTIFY_DONE;
2904
2905	mdev = container_of(this, struct mlx4_en_dev, netdev_nb);
2906	dev = mdev->dev;
2907
2908	/* Go into this mode only when two network devices set on two ports
2909	 * of the same mlx4 device are slaves of the same bonding master
2910	 */
2911	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2912		++num_eth_ports;
2913		if (!port && (mdev->pndev[i] == ndev))
2914			port = i;
2915		mdev->upper[i] = mdev->pndev[i] ?
2916			netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2917		/* condition not met: network device is a slave */
2918		if (!mdev->upper[i])
2919			do_bond = false;
2920		if (num_eth_ports < 2)
2921			continue;
2922		/* condition not met: same master */
2923		if (mdev->upper[i] != mdev->upper[i-1])
2924			do_bond = false;
2925	}
2926	/* condition not met: 2 salves */
2927	do_bond = (num_eth_ports ==  2) ? do_bond : false;
2928
2929	/* handle only events that come with enough info */
2930	if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2931		return NOTIFY_DONE;
2932
2933	if (do_bond) {
2934		struct netdev_notifier_bonding_info *notifier_info = ptr;
2935		struct netdev_bonding_info *bonding_info =
2936			&notifier_info->bonding_info;
2937
2938		/* required mode 1, 2 or 4 */
2939		if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2940		    (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2941		    (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2942			do_bond = false;
2943
2944		/* require exactly 2 slaves */
2945		if (bonding_info->master.num_slaves != 2)
2946			do_bond = false;
2947
2948		/* calc v2p */
2949		if (do_bond) {
2950			if (bonding_info->master.bond_mode ==
2951			    BOND_MODE_ACTIVEBACKUP) {
2952				/* in active-backup mode virtual ports are
2953				 * mapped to the physical port of the active
2954				 * slave */
2955				if (bonding_info->slave.state ==
2956				    BOND_STATE_BACKUP) {
2957					if (port == 1) {
2958						v2p_port1 = 2;
2959						v2p_port2 = 2;
2960					} else {
2961						v2p_port1 = 1;
2962						v2p_port2 = 1;
2963					}
2964				} else { /* BOND_STATE_ACTIVE */
2965					if (port == 1) {
2966						v2p_port1 = 1;
2967						v2p_port2 = 1;
2968					} else {
2969						v2p_port1 = 2;
2970						v2p_port2 = 2;
2971					}
2972				}
2973			} else { /* Active-Active */
2974				/* in active-active mode a virtual port is
2975				 * mapped to the native physical port if and only
2976				 * if the physical port is up */
2977				__s8 link = bonding_info->slave.link;
2978
2979				if (port == 1)
2980					v2p_port2 = 2;
2981				else
2982					v2p_port1 = 1;
2983				if ((link == BOND_LINK_UP) ||
2984				    (link == BOND_LINK_FAIL)) {
2985					if (port == 1)
2986						v2p_port1 = 1;
2987					else
2988						v2p_port2 = 2;
2989				} else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2990					if (port == 1)
2991						v2p_port1 = 2;
2992					else
2993						v2p_port2 = 1;
2994				}
2995			}
2996		}
2997	}
2998
2999	mlx4_queue_bond_work(dev, do_bond, v2p_port1, v2p_port2);
3000
3001	return NOTIFY_DONE;
3002}
3003
3004void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3005				     struct mlx4_en_stats_bitmap *stats_bitmap,
3006				     u8 rx_ppp, u8 rx_pause,
3007				     u8 tx_ppp, u8 tx_pause)
3008{
3009	int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3010
3011	if (!mlx4_is_slave(dev) &&
3012	    (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3013		mutex_lock(&stats_bitmap->mutex);
3014		bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
3015
3016		if (rx_ppp)
3017			bitmap_set(stats_bitmap->bitmap, last_i,
3018				   NUM_FLOW_PRIORITY_STATS_RX);
3019		last_i += NUM_FLOW_PRIORITY_STATS_RX;
3020
3021		if (rx_pause && !(rx_ppp))
3022			bitmap_set(stats_bitmap->bitmap, last_i,
3023				   NUM_FLOW_STATS_RX);
3024		last_i += NUM_FLOW_STATS_RX;
3025
3026		if (tx_ppp)
3027			bitmap_set(stats_bitmap->bitmap, last_i,
3028				   NUM_FLOW_PRIORITY_STATS_TX);
3029		last_i += NUM_FLOW_PRIORITY_STATS_TX;
3030
3031		if (tx_pause && !(tx_ppp))
3032			bitmap_set(stats_bitmap->bitmap, last_i,
3033				   NUM_FLOW_STATS_TX);
3034		last_i += NUM_FLOW_STATS_TX;
3035
3036		mutex_unlock(&stats_bitmap->mutex);
3037	}
3038}
3039
3040void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3041			      struct mlx4_en_stats_bitmap *stats_bitmap,
3042			      u8 rx_ppp, u8 rx_pause,
3043			      u8 tx_ppp, u8 tx_pause)
3044{
3045	int last_i = 0;
3046
3047	mutex_init(&stats_bitmap->mutex);
3048	bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3049
3050	if (mlx4_is_slave(dev)) {
3051		bitmap_set(stats_bitmap->bitmap, last_i +
3052					 MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3053		bitmap_set(stats_bitmap->bitmap, last_i +
3054					 MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3055		bitmap_set(stats_bitmap->bitmap, last_i +
3056					 MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3057		bitmap_set(stats_bitmap->bitmap, last_i +
3058					 MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3059		bitmap_set(stats_bitmap->bitmap, last_i +
3060					 MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3061		bitmap_set(stats_bitmap->bitmap, last_i +
3062					 MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3063	} else {
3064		bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3065	}
3066	last_i += NUM_MAIN_STATS;
3067
3068	bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3069	last_i += NUM_PORT_STATS;
3070
3071	if (mlx4_is_master(dev))
3072		bitmap_set(stats_bitmap->bitmap, last_i,
3073			   NUM_PF_STATS);
3074	last_i += NUM_PF_STATS;
3075
3076	mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3077					rx_ppp, rx_pause,
3078					tx_ppp, tx_pause);
3079	last_i += NUM_FLOW_STATS;
3080
3081	if (!mlx4_is_slave(dev))
3082		bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3083	last_i += NUM_PKT_STATS;
3084
3085	bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS);
3086	last_i += NUM_XDP_STATS;
3087
3088	if (!mlx4_is_slave(dev))
3089		bitmap_set(stats_bitmap->bitmap, last_i, NUM_PHY_STATS);
3090	last_i += NUM_PHY_STATS;
3091}
3092
3093static void mlx4_get_queue_stats_rx(struct net_device *dev, int i,
3094				    struct netdev_queue_stats_rx *stats)
3095{
3096	struct mlx4_en_priv *priv = netdev_priv(dev);
3097	const struct mlx4_en_rx_ring *ring;
3098
3099	spin_lock_bh(&priv->stats_lock);
3100
3101	if (!priv->port_up || mlx4_is_master(priv->mdev->dev))
3102		goto out_unlock;
3103
3104	ring = priv->rx_ring[i];
3105	stats->packets = READ_ONCE(ring->packets);
3106	stats->bytes   = READ_ONCE(ring->bytes);
3107	stats->alloc_fail = READ_ONCE(ring->alloc_fail);
3108
3109out_unlock:
3110	spin_unlock_bh(&priv->stats_lock);
3111}
3112
3113static void mlx4_get_queue_stats_tx(struct net_device *dev, int i,
3114				    struct netdev_queue_stats_tx *stats)
3115{
3116	struct mlx4_en_priv *priv = netdev_priv(dev);
3117	const struct mlx4_en_tx_ring *ring;
3118
3119	spin_lock_bh(&priv->stats_lock);
3120
3121	if (!priv->port_up || mlx4_is_master(priv->mdev->dev))
3122		goto out_unlock;
3123
3124	ring = priv->tx_ring[TX][i];
3125	stats->packets = READ_ONCE(ring->packets);
3126	stats->bytes   = READ_ONCE(ring->bytes);
3127
3128out_unlock:
3129	spin_unlock_bh(&priv->stats_lock);
3130}
3131
3132static void mlx4_get_base_stats(struct net_device *dev,
3133				struct netdev_queue_stats_rx *rx,
3134				struct netdev_queue_stats_tx *tx)
3135{
3136	struct mlx4_en_priv *priv = netdev_priv(dev);
3137
3138	spin_lock_bh(&priv->stats_lock);
3139
3140	if (!priv->port_up || mlx4_is_master(priv->mdev->dev))
3141		goto out_unlock;
3142
3143	if (priv->rx_ring_num) {
3144		rx->packets = 0;
3145		rx->bytes = 0;
3146		rx->alloc_fail = 0;
3147	}
3148
3149	if (priv->tx_ring_num[TX]) {
3150		tx->packets = 0;
3151		tx->bytes = 0;
3152	}
3153
3154out_unlock:
3155	spin_unlock_bh(&priv->stats_lock);
3156}
3157
3158static const struct netdev_stat_ops mlx4_stat_ops = {
3159	.get_queue_stats_rx     = mlx4_get_queue_stats_rx,
3160	.get_queue_stats_tx     = mlx4_get_queue_stats_tx,
3161	.get_base_stats         = mlx4_get_base_stats,
3162};
3163
3164int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3165			struct mlx4_en_port_profile *prof)
3166{
3167	struct net_device *dev;
3168	struct mlx4_en_priv *priv;
3169	int i, t;
3170	int err;
3171
3172	dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3173				 MAX_TX_RINGS, MAX_RX_RINGS);
3174	if (dev == NULL)
3175		return -ENOMEM;
3176
3177	netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]);
3178	netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3179
3180	SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3181	dev->dev_port = port - 1;
3182
3183	/*
3184	 * Initialize driver private data
3185	 */
3186
3187	priv = netdev_priv(dev);
3188	memset(priv, 0, sizeof(struct mlx4_en_priv));
3189	priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3190	spin_lock_init(&priv->stats_lock);
3191	INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3192	INIT_WORK(&priv->restart_task, mlx4_en_restart);
3193	INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate_work);
3194	INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3195	INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3196#ifdef CONFIG_RFS_ACCEL
3197	INIT_LIST_HEAD(&priv->filters);
3198	spin_lock_init(&priv->filters_lock);
3199#endif
3200
3201	priv->dev = dev;
3202	priv->mdev = mdev;
3203	priv->ddev = &mdev->pdev->dev;
3204	priv->prof = prof;
3205	priv->port = port;
3206	priv->port_up = false;
3207	priv->flags = prof->flags;
3208	priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3209	priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3210			MLX4_WQE_CTRL_SOLICITED);
3211	priv->num_tx_rings_p_up = mdev->profile.max_num_tx_rings_p_up;
3212	priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3213	netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3214
3215	for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3216		priv->tx_ring_num[t] = prof->tx_ring_num[t];
3217		if (!priv->tx_ring_num[t])
3218			continue;
3219
3220		priv->tx_ring[t] = kcalloc(MAX_TX_RINGS,
3221					   sizeof(struct mlx4_en_tx_ring *),
3222					   GFP_KERNEL);
3223		if (!priv->tx_ring[t]) {
3224			err = -ENOMEM;
3225			goto out;
3226		}
3227		priv->tx_cq[t] = kcalloc(MAX_TX_RINGS,
3228					 sizeof(struct mlx4_en_cq *),
3229					 GFP_KERNEL);
3230		if (!priv->tx_cq[t]) {
3231			err = -ENOMEM;
3232			goto out;
3233		}
3234	}
3235	priv->rx_ring_num = prof->rx_ring_num;
3236	priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3237	priv->cqe_size = mdev->dev->caps.cqe_size;
3238	priv->mac_index = -1;
3239	priv->msg_enable = MLX4_EN_MSG_LEVEL;
3240#ifdef CONFIG_MLX4_EN_DCB
3241	if (!mlx4_is_slave(priv->mdev->dev)) {
3242		u8 prio;
3243
3244		for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) {
3245			priv->ets.prio_tc[prio] = prio;
3246			priv->ets.tc_tsa[prio]  = IEEE_8021QAZ_TSA_VENDOR;
3247		}
3248
3249		priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3250			DCB_CAP_DCBX_VER_IEEE;
3251		priv->flags |= MLX4_EN_DCB_ENABLED;
3252		priv->cee_config.pfc_state = false;
3253
3254		for (i = 0; i < MLX4_EN_NUM_UP_HIGH; i++)
3255			priv->cee_config.dcb_pfc[i] = pfc_disabled;
3256
3257		if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3258			dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3259		} else {
3260			en_info(priv, "enabling only PFC DCB ops\n");
3261			dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3262		}
3263	}
3264#endif
3265
3266	for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3267		INIT_HLIST_HEAD(&priv->mac_hash[i]);
3268
3269	/* Query for default mac and max mtu */
3270	priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3271
3272	if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3273	    MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3274		priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3275
3276	/* Set default MAC */
3277	dev->addr_len = ETH_ALEN;
3278	mlx4_en_u64_to_mac(dev, mdev->dev->caps.def_mac[priv->port]);
3279	if (!is_valid_ether_addr(dev->dev_addr)) {
3280		en_err(priv, "Port: %d, invalid mac burned: %pM, quitting\n",
3281		       priv->port, dev->dev_addr);
3282		err = -EINVAL;
3283		goto out;
3284	} else if (mlx4_is_slave(priv->mdev->dev) &&
3285		   (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3286		/* Random MAC was assigned in mlx4_slave_cap
3287		 * in mlx4_core module
3288		 */
3289		dev->addr_assign_type |= NET_ADDR_RANDOM;
3290		en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3291	}
3292
3293	memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3294
3295	priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3296					  DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3297	err = mlx4_en_alloc_resources(priv);
3298	if (err)
3299		goto out;
3300
3301	/* Initialize time stamping config */
3302	priv->hwtstamp_config.flags = 0;
3303	priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3304	priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3305
3306	/* Allocate page for receive rings */
3307	err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3308				MLX4_EN_PAGE_SIZE);
3309	if (err) {
3310		en_err(priv, "Failed to allocate page for rx qps\n");
3311		goto out;
3312	}
3313	priv->allocated = 1;
3314
3315	/*
3316	 * Initialize netdev entry points
3317	 */
3318	if (mlx4_is_master(priv->mdev->dev))
3319		dev->netdev_ops = &mlx4_netdev_ops_master;
3320	else
3321		dev->netdev_ops = &mlx4_netdev_ops;
3322	dev->xdp_metadata_ops = &mlx4_xdp_metadata_ops;
3323	dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3324	netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
3325	netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3326
3327	dev->stat_ops = &mlx4_stat_ops;
3328	dev->ethtool_ops = &mlx4_en_ethtool_ops;
3329
3330	/*
3331	 * Set driver features
3332	 */
3333	dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3334	if (mdev->LSO_support)
3335		dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3336
3337	if (mdev->dev->caps.tunnel_offload_mode ==
3338	    MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3339		dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3340				    NETIF_F_GSO_UDP_TUNNEL_CSUM |
3341				    NETIF_F_GSO_PARTIAL;
3342		dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3343				    NETIF_F_GSO_UDP_TUNNEL_CSUM |
3344				    NETIF_F_GSO_PARTIAL;
3345		dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3346		dev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3347				       NETIF_F_RXCSUM |
3348				       NETIF_F_TSO | NETIF_F_TSO6 |
3349				       NETIF_F_GSO_UDP_TUNNEL |
3350				       NETIF_F_GSO_UDP_TUNNEL_CSUM |
3351				       NETIF_F_GSO_PARTIAL;
3352
3353		dev->udp_tunnel_nic_info = &mlx4_udp_tunnels;
3354	}
3355
3356	dev->vlan_features = dev->hw_features;
3357
3358	dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3359	dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3360			NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3361			NETIF_F_HW_VLAN_CTAG_FILTER;
3362	dev->hw_features |= NETIF_F_LOOPBACK |
3363			NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3364
3365	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3366		dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3367			NETIF_F_HW_VLAN_STAG_FILTER;
3368		dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3369	}
3370
3371	if (mlx4_is_slave(mdev->dev)) {
3372		bool vlan_offload_disabled;
3373		int phv;
3374
3375		err = get_phv_bit(mdev->dev, port, &phv);
3376		if (!err && phv) {
3377			dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3378			priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3379		}
3380		err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port,
3381							&vlan_offload_disabled);
3382		if (!err && vlan_offload_disabled) {
3383			dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3384					      NETIF_F_HW_VLAN_CTAG_RX |
3385					      NETIF_F_HW_VLAN_STAG_TX |
3386					      NETIF_F_HW_VLAN_STAG_RX);
3387			dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3388					   NETIF_F_HW_VLAN_CTAG_RX |
3389					   NETIF_F_HW_VLAN_STAG_TX |
3390					   NETIF_F_HW_VLAN_STAG_RX);
3391		}
3392	} else {
3393		if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3394		    !(mdev->dev->caps.flags2 &
3395		      MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3396			dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3397	}
3398
3399	if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3400		dev->hw_features |= NETIF_F_RXFCS;
3401
3402	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3403		dev->hw_features |= NETIF_F_RXALL;
3404
3405	if (mdev->dev->caps.steering_mode ==
3406	    MLX4_STEERING_MODE_DEVICE_MANAGED &&
3407	    mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3408		dev->hw_features |= NETIF_F_NTUPLE;
3409
3410	if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3411		dev->priv_flags |= IFF_UNICAST_FLT;
3412
3413	/* Setting a default hash function value */
3414	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3415		priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3416	} else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3417		priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3418	} else {
3419		en_warn(priv,
3420			"No RSS hash capabilities exposed, using Toeplitz\n");
3421		priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3422	}
3423
3424	dev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT;
3425
3426	/* MTU range: 68 - hw-specific max */
3427	dev->min_mtu = ETH_MIN_MTU;
3428	dev->max_mtu = priv->max_mtu;
3429
3430	/* supports LSOv2 packets. */
3431	netif_set_tso_max_size(dev, GSO_MAX_SIZE);
3432
3433	mdev->pndev[port] = dev;
3434	mdev->upper[port] = NULL;
3435
3436	netif_carrier_off(dev);
3437	mlx4_en_set_default_moderation(priv);
3438
3439	en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3440	en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3441
3442	mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3443
3444	/* Configure port */
3445	mlx4_en_calc_rx_buf(dev);
3446	err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3447				    priv->rx_skb_size + ETH_FCS_LEN,
3448				    prof->tx_pause, prof->tx_ppp,
3449				    prof->rx_pause, prof->rx_ppp);
3450	if (err) {
3451		en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3452		       priv->port, err);
3453		goto out;
3454	}
3455
3456	if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3457		err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3458		if (err) {
3459			en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3460			       err);
3461			goto out;
3462		}
3463	}
3464
3465	/* Init port */
3466	en_warn(priv, "Initializing port\n");
3467	err = mlx4_INIT_PORT(mdev->dev, priv->port);
3468	if (err) {
3469		en_err(priv, "Failed Initializing port\n");
3470		goto out;
3471	}
3472	queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3473
3474	/* Initialize time stamp mechanism */
3475	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3476		mlx4_en_init_timestamp(mdev);
3477
3478	queue_delayed_work(mdev->workqueue, &priv->service_task,
3479			   SERVICE_TASK_DELAY);
3480
3481	mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3482				 mdev->profile.prof[priv->port].rx_ppp,
3483				 mdev->profile.prof[priv->port].rx_pause,
3484				 mdev->profile.prof[priv->port].tx_ppp,
3485				 mdev->profile.prof[priv->port].tx_pause);
3486
3487	SET_NETDEV_DEVLINK_PORT(dev,
3488				mlx4_get_devlink_port(mdev->dev, priv->port));
3489	err = register_netdev(dev);
3490	if (err) {
3491		en_err(priv, "Netdev registration failed for port %d\n", port);
3492		goto out;
3493	}
3494
3495	priv->registered = 1;
3496
3497	return 0;
3498
3499out:
3500	mlx4_en_destroy_netdev(dev);
3501	return err;
3502}
3503
3504int mlx4_en_reset_config(struct net_device *dev,
3505			 struct kernel_hwtstamp_config *ts_config,
3506			 netdev_features_t features)
3507{
3508	struct mlx4_en_priv *priv = netdev_priv(dev);
3509	struct mlx4_en_dev *mdev = priv->mdev;
3510	struct mlx4_en_port_profile new_prof;
3511	struct mlx4_en_priv *tmp;
3512	int port_up = 0;
3513	int err = 0;
3514
3515	if (priv->hwtstamp_config.tx_type == ts_config->tx_type &&
3516	    priv->hwtstamp_config.rx_filter == ts_config->rx_filter &&
3517	    !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3518	    !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3519		return 0; /* Nothing to change */
3520
3521	if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3522	    (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3523	    (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3524		en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3525		return -EINVAL;
3526	}
3527
3528	tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3529	if (!tmp)
3530		return -ENOMEM;
3531
3532	mutex_lock(&mdev->state_lock);
3533
3534	memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3535	memcpy(&new_prof.hwtstamp_config, ts_config, sizeof(*ts_config));
3536
3537	err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
3538	if (err)
3539		goto out;
3540
3541	if (priv->port_up) {
3542		port_up = 1;
3543		mlx4_en_stop_port(dev, 1);
3544	}
3545
3546	mlx4_en_safe_replace_resources(priv, tmp);
3547
3548	if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3549		if (features & NETIF_F_HW_VLAN_CTAG_RX)
3550			dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3551		else
3552			dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3553	} else if (ts_config->rx_filter == HWTSTAMP_FILTER_NONE) {
3554		/* RX time-stamping is OFF, update the RX vlan offload
3555		 * to the latest wanted state
3556		 */
3557		if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3558			dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3559		else
3560			dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3561	}
3562
3563	if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3564		if (features & NETIF_F_RXFCS)
3565			dev->features |= NETIF_F_RXFCS;
3566		else
3567			dev->features &= ~NETIF_F_RXFCS;
3568	}
3569
3570	/* RX vlan offload and RX time-stamping can't co-exist !
3571	 * Regardless of the caller's choice,
3572	 * Turn Off RX vlan offload in case of time-stamping is ON
3573	 */
3574	if (ts_config->rx_filter != HWTSTAMP_FILTER_NONE) {
3575		if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3576			en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3577		dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3578	}
3579
3580	if (port_up) {
3581		err = mlx4_en_start_port(dev);
3582		if (err)
3583			en_err(priv, "Failed starting port\n");
3584	}
3585
3586	if (!err)
3587		err = mlx4_en_moderation_update(priv);
3588out:
3589	mutex_unlock(&mdev->state_lock);
3590	kfree(tmp);
3591	if (!err)
3592		netdev_features_change(dev);
3593	return err;
3594}