linux/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
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   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/tcp.h>
  37#include <linux/if_vlan.h>
  38#include <linux/delay.h>
  39#include <linux/slab.h>
  40#include <linux/hash.h>
  41#include <net/ip.h>
  42#include <net/busy_poll.h>
  43#include <net/vxlan.h>
  44#include <net/devlink.h>
  45
  46#include <linux/mlx4/driver.h>
  47#include <linux/mlx4/device.h>
  48#include <linux/mlx4/cmd.h>
  49#include <linux/mlx4/cq.h>
  50
  51#include "mlx4_en.h"
  52#include "en_port.h"
  53
  54#define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
  55                                   XDP_PACKET_HEADROOM))
  56
  57int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  58{
  59        struct mlx4_en_priv *priv = netdev_priv(dev);
  60        int i;
  61        unsigned int offset = 0;
  62
  63        if (up && up != MLX4_EN_NUM_UP_HIGH)
  64                return -EINVAL;
  65
  66        netdev_set_num_tc(dev, up);
  67        netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
  68        /* Partition Tx queues evenly amongst UP's */
  69        for (i = 0; i < up; i++) {
  70                netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  71                offset += priv->num_tx_rings_p_up;
  72        }
  73
  74#ifdef CONFIG_MLX4_EN_DCB
  75        if (!mlx4_is_slave(priv->mdev->dev)) {
  76                if (up) {
  77                        if (priv->dcbx_cap)
  78                                priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
  79                } else {
  80                        priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
  81                        priv->cee_config.pfc_state = false;
  82                }
  83        }
  84#endif /* CONFIG_MLX4_EN_DCB */
  85
  86        return 0;
  87}
  88
  89int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc)
  90{
  91        struct mlx4_en_priv *priv = netdev_priv(dev);
  92        struct mlx4_en_dev *mdev = priv->mdev;
  93        struct mlx4_en_port_profile new_prof;
  94        struct mlx4_en_priv *tmp;
  95        int port_up = 0;
  96        int err = 0;
  97
  98        tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
  99        if (!tmp)
 100                return -ENOMEM;
 101
 102        mutex_lock(&mdev->state_lock);
 103        memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
 104        new_prof.num_up = (tc == 0) ? MLX4_EN_NUM_UP_LOW :
 105                                      MLX4_EN_NUM_UP_HIGH;
 106        new_prof.tx_ring_num[TX] = new_prof.num_tx_rings_p_up *
 107                                   new_prof.num_up;
 108        err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
 109        if (err)
 110                goto out;
 111
 112        if (priv->port_up) {
 113                port_up = 1;
 114                mlx4_en_stop_port(dev, 1);
 115        }
 116
 117        mlx4_en_safe_replace_resources(priv, tmp);
 118        if (port_up) {
 119                err = mlx4_en_start_port(dev);
 120                if (err) {
 121                        en_err(priv, "Failed starting port for setup TC\n");
 122                        goto out;
 123                }
 124        }
 125
 126        err = mlx4_en_setup_tc(dev, tc);
 127out:
 128        mutex_unlock(&mdev->state_lock);
 129        kfree(tmp);
 130        return err;
 131}
 132
 133static int __mlx4_en_setup_tc(struct net_device *dev, enum tc_setup_type type,
 134                              void *type_data)
 135{
 136        struct tc_mqprio_qopt *mqprio = type_data;
 137
 138        if (type != TC_SETUP_MQPRIO)
 139                return -EOPNOTSUPP;
 140
 141        if (mqprio->num_tc && mqprio->num_tc != MLX4_EN_NUM_UP_HIGH)
 142                return -EINVAL;
 143
 144        mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 145
 146        return mlx4_en_alloc_tx_queue_per_tc(dev, mqprio->num_tc);
 147}
 148
 149#ifdef CONFIG_RFS_ACCEL
 150
 151struct mlx4_en_filter {
 152        struct list_head next;
 153        struct work_struct work;
 154
 155        u8     ip_proto;
 156        __be32 src_ip;
 157        __be32 dst_ip;
 158        __be16 src_port;
 159        __be16 dst_port;
 160
 161        int rxq_index;
 162        struct mlx4_en_priv *priv;
 163        u32 flow_id;                    /* RFS infrastructure id */
 164        int id;                         /* mlx4_en driver id */
 165        u64 reg_id;                     /* Flow steering API id */
 166        u8 activated;                   /* Used to prevent expiry before filter
 167                                         * is attached
 168                                         */
 169        struct hlist_node filter_chain;
 170};
 171
 172static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 173
 174static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 175{
 176        switch (ip_proto) {
 177        case IPPROTO_UDP:
 178                return MLX4_NET_TRANS_RULE_ID_UDP;
 179        case IPPROTO_TCP:
 180                return MLX4_NET_TRANS_RULE_ID_TCP;
 181        default:
 182                return MLX4_NET_TRANS_RULE_NUM;
 183        }
 184};
 185
 186/* Must not acquire state_lock, as its corresponding work_sync
 187 * is done under it.
 188 */
 189static void mlx4_en_filter_work(struct work_struct *work)
 190{
 191        struct mlx4_en_filter *filter = container_of(work,
 192                                                     struct mlx4_en_filter,
 193                                                     work);
 194        struct mlx4_en_priv *priv = filter->priv;
 195        struct mlx4_spec_list spec_tcp_udp = {
 196                .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 197                {
 198                        .tcp_udp = {
 199                                .dst_port = filter->dst_port,
 200                                .dst_port_msk = (__force __be16)-1,
 201                                .src_port = filter->src_port,
 202                                .src_port_msk = (__force __be16)-1,
 203                        },
 204                },
 205        };
 206        struct mlx4_spec_list spec_ip = {
 207                .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 208                {
 209                        .ipv4 = {
 210                                .dst_ip = filter->dst_ip,
 211                                .dst_ip_msk = (__force __be32)-1,
 212                                .src_ip = filter->src_ip,
 213                                .src_ip_msk = (__force __be32)-1,
 214                        },
 215                },
 216        };
 217        struct mlx4_spec_list spec_eth = {
 218                .id = MLX4_NET_TRANS_RULE_ID_ETH,
 219        };
 220        struct mlx4_net_trans_rule rule = {
 221                .list = LIST_HEAD_INIT(rule.list),
 222                .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 223                .exclusive = 1,
 224                .allow_loopback = 1,
 225                .promisc_mode = MLX4_FS_REGULAR,
 226                .port = priv->port,
 227                .priority = MLX4_DOMAIN_RFS,
 228        };
 229        int rc;
 230        __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 231
 232        if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 233                en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 234                        filter->ip_proto);
 235                goto ignore;
 236        }
 237        list_add_tail(&spec_eth.list, &rule.list);
 238        list_add_tail(&spec_ip.list, &rule.list);
 239        list_add_tail(&spec_tcp_udp.list, &rule.list);
 240
 241        rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 242        memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 243        memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 244
 245        filter->activated = 0;
 246
 247        if (filter->reg_id) {
 248                rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 249                if (rc && rc != -ENOENT)
 250                        en_err(priv, "Error detaching flow. rc = %d\n", rc);
 251        }
 252
 253        rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 254        if (rc)
 255                en_err(priv, "Error attaching flow. err = %d\n", rc);
 256
 257ignore:
 258        mlx4_en_filter_rfs_expire(priv);
 259
 260        filter->activated = 1;
 261}
 262
 263static inline struct hlist_head *
 264filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 265                   __be16 src_port, __be16 dst_port)
 266{
 267        unsigned long l;
 268        int bucket_idx;
 269
 270        l = (__force unsigned long)src_port |
 271            ((__force unsigned long)dst_port << 2);
 272        l ^= (__force unsigned long)(src_ip ^ dst_ip);
 273
 274        bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 275
 276        return &priv->filter_hash[bucket_idx];
 277}
 278
 279static struct mlx4_en_filter *
 280mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 281                     __be32 dst_ip, u8 ip_proto, __be16 src_port,
 282                     __be16 dst_port, u32 flow_id)
 283{
 284        struct mlx4_en_filter *filter = NULL;
 285
 286        filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 287        if (!filter)
 288                return NULL;
 289
 290        filter->priv = priv;
 291        filter->rxq_index = rxq_index;
 292        INIT_WORK(&filter->work, mlx4_en_filter_work);
 293
 294        filter->src_ip = src_ip;
 295        filter->dst_ip = dst_ip;
 296        filter->ip_proto = ip_proto;
 297        filter->src_port = src_port;
 298        filter->dst_port = dst_port;
 299
 300        filter->flow_id = flow_id;
 301
 302        filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 303
 304        list_add_tail(&filter->next, &priv->filters);
 305        hlist_add_head(&filter->filter_chain,
 306                       filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 307                                          dst_port));
 308
 309        return filter;
 310}
 311
 312static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 313{
 314        struct mlx4_en_priv *priv = filter->priv;
 315        int rc;
 316
 317        list_del(&filter->next);
 318
 319        rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 320        if (rc && rc != -ENOENT)
 321                en_err(priv, "Error detaching flow. rc = %d\n", rc);
 322
 323        kfree(filter);
 324}
 325
 326static inline struct mlx4_en_filter *
 327mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 328                    u8 ip_proto, __be16 src_port, __be16 dst_port)
 329{
 330        struct mlx4_en_filter *filter;
 331        struct mlx4_en_filter *ret = NULL;
 332
 333        hlist_for_each_entry(filter,
 334                             filter_hash_bucket(priv, src_ip, dst_ip,
 335                                                src_port, dst_port),
 336                             filter_chain) {
 337                if (filter->src_ip == src_ip &&
 338                    filter->dst_ip == dst_ip &&
 339                    filter->ip_proto == ip_proto &&
 340                    filter->src_port == src_port &&
 341                    filter->dst_port == dst_port) {
 342                        ret = filter;
 343                        break;
 344                }
 345        }
 346
 347        return ret;
 348}
 349
 350static int
 351mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 352                   u16 rxq_index, u32 flow_id)
 353{
 354        struct mlx4_en_priv *priv = netdev_priv(net_dev);
 355        struct mlx4_en_filter *filter;
 356        const struct iphdr *ip;
 357        const __be16 *ports;
 358        u8 ip_proto;
 359        __be32 src_ip;
 360        __be32 dst_ip;
 361        __be16 src_port;
 362        __be16 dst_port;
 363        int nhoff = skb_network_offset(skb);
 364        int ret = 0;
 365
 366        if (skb->protocol != htons(ETH_P_IP))
 367                return -EPROTONOSUPPORT;
 368
 369        ip = (const struct iphdr *)(skb->data + nhoff);
 370        if (ip_is_fragment(ip))
 371                return -EPROTONOSUPPORT;
 372
 373        if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 374                return -EPROTONOSUPPORT;
 375        ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 376
 377        ip_proto = ip->protocol;
 378        src_ip = ip->saddr;
 379        dst_ip = ip->daddr;
 380        src_port = ports[0];
 381        dst_port = ports[1];
 382
 383        spin_lock_bh(&priv->filters_lock);
 384        filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 385                                     src_port, dst_port);
 386        if (filter) {
 387                if (filter->rxq_index == rxq_index)
 388                        goto out;
 389
 390                filter->rxq_index = rxq_index;
 391        } else {
 392                filter = mlx4_en_filter_alloc(priv, rxq_index,
 393                                              src_ip, dst_ip, ip_proto,
 394                                              src_port, dst_port, flow_id);
 395                if (!filter) {
 396                        ret = -ENOMEM;
 397                        goto err;
 398                }
 399        }
 400
 401        queue_work(priv->mdev->workqueue, &filter->work);
 402
 403out:
 404        ret = filter->id;
 405err:
 406        spin_unlock_bh(&priv->filters_lock);
 407
 408        return ret;
 409}
 410
 411void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 412{
 413        struct mlx4_en_filter *filter, *tmp;
 414        LIST_HEAD(del_list);
 415
 416        spin_lock_bh(&priv->filters_lock);
 417        list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 418                list_move(&filter->next, &del_list);
 419                hlist_del(&filter->filter_chain);
 420        }
 421        spin_unlock_bh(&priv->filters_lock);
 422
 423        list_for_each_entry_safe(filter, tmp, &del_list, next) {
 424                cancel_work_sync(&filter->work);
 425                mlx4_en_filter_free(filter);
 426        }
 427}
 428
 429static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 430{
 431        struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 432        LIST_HEAD(del_list);
 433        int i = 0;
 434
 435        spin_lock_bh(&priv->filters_lock);
 436        list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 437                if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 438                        break;
 439
 440                if (filter->activated &&
 441                    !work_pending(&filter->work) &&
 442                    rps_may_expire_flow(priv->dev,
 443                                        filter->rxq_index, filter->flow_id,
 444                                        filter->id)) {
 445                        list_move(&filter->next, &del_list);
 446                        hlist_del(&filter->filter_chain);
 447                } else
 448                        last_filter = filter;
 449
 450                i++;
 451        }
 452
 453        if (last_filter && (&last_filter->next != priv->filters.next))
 454                list_move(&priv->filters, &last_filter->next);
 455
 456        spin_unlock_bh(&priv->filters_lock);
 457
 458        list_for_each_entry_safe(filter, tmp, &del_list, next)
 459                mlx4_en_filter_free(filter);
 460}
 461#endif
 462
 463static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 464                                   __be16 proto, u16 vid)
 465{
 466        struct mlx4_en_priv *priv = netdev_priv(dev);
 467        struct mlx4_en_dev *mdev = priv->mdev;
 468        int err;
 469        int idx;
 470
 471        en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 472
 473        set_bit(vid, priv->active_vlans);
 474
 475        /* Add VID to port VLAN filter */
 476        mutex_lock(&mdev->state_lock);
 477        if (mdev->device_up && priv->port_up) {
 478                err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 479                if (err) {
 480                        en_err(priv, "Failed configuring VLAN filter\n");
 481                        goto out;
 482                }
 483        }
 484        err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 485        if (err)
 486                en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 487
 488out:
 489        mutex_unlock(&mdev->state_lock);
 490        return err;
 491}
 492
 493static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 494                                    __be16 proto, u16 vid)
 495{
 496        struct mlx4_en_priv *priv = netdev_priv(dev);
 497        struct mlx4_en_dev *mdev = priv->mdev;
 498        int err = 0;
 499
 500        en_dbg(HW, priv, "Killing VID:%d\n", vid);
 501
 502        clear_bit(vid, priv->active_vlans);
 503
 504        /* Remove VID from port VLAN filter */
 505        mutex_lock(&mdev->state_lock);
 506        mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 507
 508        if (mdev->device_up && priv->port_up) {
 509                err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 510                if (err)
 511                        en_err(priv, "Failed configuring VLAN filter\n");
 512        }
 513        mutex_unlock(&mdev->state_lock);
 514
 515        return err;
 516}
 517
 518static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 519{
 520        int i;
 521        for (i = ETH_ALEN - 1; i >= 0; --i) {
 522                dst_mac[i] = src_mac & 0xff;
 523                src_mac >>= 8;
 524        }
 525        memset(&dst_mac[ETH_ALEN], 0, 2);
 526}
 527
 528
 529static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 530                                    int qpn, u64 *reg_id)
 531{
 532        int err;
 533
 534        if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 535            priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 536                return 0; /* do nothing */
 537
 538        err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 539                                    MLX4_DOMAIN_NIC, reg_id);
 540        if (err) {
 541                en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 542                return err;
 543        }
 544        en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 545        return 0;
 546}
 547
 548
 549static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 550                                unsigned char *mac, int *qpn, u64 *reg_id)
 551{
 552        struct mlx4_en_dev *mdev = priv->mdev;
 553        struct mlx4_dev *dev = mdev->dev;
 554        int err;
 555
 556        switch (dev->caps.steering_mode) {
 557        case MLX4_STEERING_MODE_B0: {
 558                struct mlx4_qp qp;
 559                u8 gid[16] = {0};
 560
 561                qp.qpn = *qpn;
 562                memcpy(&gid[10], mac, ETH_ALEN);
 563                gid[5] = priv->port;
 564
 565                err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 566                break;
 567        }
 568        case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 569                struct mlx4_spec_list spec_eth = { {NULL} };
 570                __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 571
 572                struct mlx4_net_trans_rule rule = {
 573                        .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 574                        .exclusive = 0,
 575                        .allow_loopback = 1,
 576                        .promisc_mode = MLX4_FS_REGULAR,
 577                        .priority = MLX4_DOMAIN_NIC,
 578                };
 579
 580                rule.port = priv->port;
 581                rule.qpn = *qpn;
 582                INIT_LIST_HEAD(&rule.list);
 583
 584                spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 585                memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 586                memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 587                list_add_tail(&spec_eth.list, &rule.list);
 588
 589                err = mlx4_flow_attach(dev, &rule, reg_id);
 590                break;
 591        }
 592        default:
 593                return -EINVAL;
 594        }
 595        if (err)
 596                en_warn(priv, "Failed Attaching Unicast\n");
 597
 598        return err;
 599}
 600
 601static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 602                                     unsigned char *mac, int qpn, u64 reg_id)
 603{
 604        struct mlx4_en_dev *mdev = priv->mdev;
 605        struct mlx4_dev *dev = mdev->dev;
 606
 607        switch (dev->caps.steering_mode) {
 608        case MLX4_STEERING_MODE_B0: {
 609                struct mlx4_qp qp;
 610                u8 gid[16] = {0};
 611
 612                qp.qpn = qpn;
 613                memcpy(&gid[10], mac, ETH_ALEN);
 614                gid[5] = priv->port;
 615
 616                mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 617                break;
 618        }
 619        case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 620                mlx4_flow_detach(dev, reg_id);
 621                break;
 622        }
 623        default:
 624                en_err(priv, "Invalid steering mode.\n");
 625        }
 626}
 627
 628static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 629{
 630        struct mlx4_en_dev *mdev = priv->mdev;
 631        struct mlx4_dev *dev = mdev->dev;
 632        int index = 0;
 633        int err = 0;
 634        int *qpn = &priv->base_qpn;
 635        u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 636
 637        en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 638               priv->dev->dev_addr);
 639        index = mlx4_register_mac(dev, priv->port, mac);
 640        if (index < 0) {
 641                err = index;
 642                en_err(priv, "Failed adding MAC: %pM\n",
 643                       priv->dev->dev_addr);
 644                return err;
 645        }
 646
 647        en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode);
 648
 649        if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 650                int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 651                *qpn = base_qpn + index;
 652                return 0;
 653        }
 654
 655        err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP,
 656                                    MLX4_RES_USAGE_DRIVER);
 657        en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 658        if (err) {
 659                en_err(priv, "Failed to reserve qp for mac registration\n");
 660                mlx4_unregister_mac(dev, priv->port, mac);
 661                return err;
 662        }
 663
 664        return 0;
 665}
 666
 667static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 668{
 669        struct mlx4_en_dev *mdev = priv->mdev;
 670        struct mlx4_dev *dev = mdev->dev;
 671        int qpn = priv->base_qpn;
 672
 673        if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 674                u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 675                en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 676                       priv->dev->dev_addr);
 677                mlx4_unregister_mac(dev, priv->port, mac);
 678        } else {
 679                en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 680                       priv->port, qpn);
 681                mlx4_qp_release_range(dev, qpn, 1);
 682                priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 683        }
 684}
 685
 686static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 687                               unsigned char *new_mac, unsigned char *prev_mac)
 688{
 689        struct mlx4_en_dev *mdev = priv->mdev;
 690        struct mlx4_dev *dev = mdev->dev;
 691        int err = 0;
 692        u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 693
 694        if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 695                struct hlist_head *bucket;
 696                unsigned int mac_hash;
 697                struct mlx4_mac_entry *entry;
 698                struct hlist_node *tmp;
 699                u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 700
 701                bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 702                hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 703                        if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 704                                mlx4_en_uc_steer_release(priv, entry->mac,
 705                                                         qpn, entry->reg_id);
 706                                mlx4_unregister_mac(dev, priv->port,
 707                                                    prev_mac_u64);
 708                                hlist_del_rcu(&entry->hlist);
 709                                synchronize_rcu();
 710                                memcpy(entry->mac, new_mac, ETH_ALEN);
 711                                entry->reg_id = 0;
 712                                mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 713                                hlist_add_head_rcu(&entry->hlist,
 714                                                   &priv->mac_hash[mac_hash]);
 715                                mlx4_register_mac(dev, priv->port, new_mac_u64);
 716                                err = mlx4_en_uc_steer_add(priv, new_mac,
 717                                                           &qpn,
 718                                                           &entry->reg_id);
 719                                if (err)
 720                                        return err;
 721                                if (priv->tunnel_reg_id) {
 722                                        mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 723                                        priv->tunnel_reg_id = 0;
 724                                }
 725                                err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 726                                                               &priv->tunnel_reg_id);
 727                                return err;
 728                        }
 729                }
 730                return -EINVAL;
 731        }
 732
 733        return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 734}
 735
 736static void mlx4_en_update_user_mac(struct mlx4_en_priv *priv,
 737                                    unsigned char new_mac[ETH_ALEN + 2])
 738{
 739        struct mlx4_en_dev *mdev = priv->mdev;
 740        int err;
 741
 742        if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_USER_MAC_EN))
 743                return;
 744
 745        err = mlx4_SET_PORT_user_mac(mdev->dev, priv->port, new_mac);
 746        if (err)
 747                en_err(priv, "Failed to pass user MAC(%pM) to Firmware for port %d, with error %d\n",
 748                       new_mac, priv->port, err);
 749}
 750
 751static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 752                              unsigned char new_mac[ETH_ALEN + 2])
 753{
 754        int err = 0;
 755
 756        if (priv->port_up) {
 757                /* Remove old MAC and insert the new one */
 758                err = mlx4_en_replace_mac(priv, priv->base_qpn,
 759                                          new_mac, priv->current_mac);
 760                if (err)
 761                        en_err(priv, "Failed changing HW MAC address\n");
 762        } else
 763                en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 764
 765        if (!err)
 766                memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 767
 768        return err;
 769}
 770
 771static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 772{
 773        struct mlx4_en_priv *priv = netdev_priv(dev);
 774        struct mlx4_en_dev *mdev = priv->mdev;
 775        struct sockaddr *saddr = addr;
 776        unsigned char new_mac[ETH_ALEN + 2];
 777        int err;
 778
 779        if (!is_valid_ether_addr(saddr->sa_data))
 780                return -EADDRNOTAVAIL;
 781
 782        mutex_lock(&mdev->state_lock);
 783        memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 784        err = mlx4_en_do_set_mac(priv, new_mac);
 785        if (err)
 786                goto out;
 787
 788        memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 789        mlx4_en_update_user_mac(priv, new_mac);
 790out:
 791        mutex_unlock(&mdev->state_lock);
 792
 793        return err;
 794}
 795
 796static void mlx4_en_clear_list(struct net_device *dev)
 797{
 798        struct mlx4_en_priv *priv = netdev_priv(dev);
 799        struct mlx4_en_mc_list *tmp, *mc_to_del;
 800
 801        list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 802                list_del(&mc_to_del->list);
 803                kfree(mc_to_del);
 804        }
 805}
 806
 807static void mlx4_en_cache_mclist(struct net_device *dev)
 808{
 809        struct mlx4_en_priv *priv = netdev_priv(dev);
 810        struct netdev_hw_addr *ha;
 811        struct mlx4_en_mc_list *tmp;
 812
 813        mlx4_en_clear_list(dev);
 814        netdev_for_each_mc_addr(ha, dev) {
 815                tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 816                if (!tmp) {
 817                        mlx4_en_clear_list(dev);
 818                        return;
 819                }
 820                memcpy(tmp->addr, ha->addr, ETH_ALEN);
 821                list_add_tail(&tmp->list, &priv->mc_list);
 822        }
 823}
 824
 825static void update_mclist_flags(struct mlx4_en_priv *priv,
 826                                struct list_head *dst,
 827                                struct list_head *src)
 828{
 829        struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 830        bool found;
 831
 832        /* Find all the entries that should be removed from dst,
 833         * These are the entries that are not found in src
 834         */
 835        list_for_each_entry(dst_tmp, dst, list) {
 836                found = false;
 837                list_for_each_entry(src_tmp, src, list) {
 838                        if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 839                                found = true;
 840                                break;
 841                        }
 842                }
 843                if (!found)
 844                        dst_tmp->action = MCLIST_REM;
 845        }
 846
 847        /* Add entries that exist in src but not in dst
 848         * mark them as need to add
 849         */
 850        list_for_each_entry(src_tmp, src, list) {
 851                found = false;
 852                list_for_each_entry(dst_tmp, dst, list) {
 853                        if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 854                                dst_tmp->action = MCLIST_NONE;
 855                                found = true;
 856                                break;
 857                        }
 858                }
 859                if (!found) {
 860                        new_mc = kmemdup(src_tmp,
 861                                         sizeof(struct mlx4_en_mc_list),
 862                                         GFP_KERNEL);
 863                        if (!new_mc)
 864                                return;
 865
 866                        new_mc->action = MCLIST_ADD;
 867                        list_add_tail(&new_mc->list, dst);
 868                }
 869        }
 870}
 871
 872static void mlx4_en_set_rx_mode(struct net_device *dev)
 873{
 874        struct mlx4_en_priv *priv = netdev_priv(dev);
 875
 876        if (!priv->port_up)
 877                return;
 878
 879        queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 880}
 881
 882static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 883                                     struct mlx4_en_dev *mdev)
 884{
 885        int err = 0;
 886
 887        if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 888                if (netif_msg_rx_status(priv))
 889                        en_warn(priv, "Entering promiscuous mode\n");
 890                priv->flags |= MLX4_EN_FLAG_PROMISC;
 891
 892                /* Enable promiscouos mode */
 893                switch (mdev->dev->caps.steering_mode) {
 894                case MLX4_STEERING_MODE_DEVICE_MANAGED:
 895                        err = mlx4_flow_steer_promisc_add(mdev->dev,
 896                                                          priv->port,
 897                                                          priv->base_qpn,
 898                                                          MLX4_FS_ALL_DEFAULT);
 899                        if (err)
 900                                en_err(priv, "Failed enabling promiscuous mode\n");
 901                        priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 902                        break;
 903
 904                case MLX4_STEERING_MODE_B0:
 905                        err = mlx4_unicast_promisc_add(mdev->dev,
 906                                                       priv->base_qpn,
 907                                                       priv->port);
 908                        if (err)
 909                                en_err(priv, "Failed enabling unicast promiscuous mode\n");
 910
 911                        /* Add the default qp number as multicast
 912                         * promisc
 913                         */
 914                        if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 915                                err = mlx4_multicast_promisc_add(mdev->dev,
 916                                                                 priv->base_qpn,
 917                                                                 priv->port);
 918                                if (err)
 919                                        en_err(priv, "Failed enabling multicast promiscuous mode\n");
 920                                priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 921                        }
 922                        break;
 923
 924                case MLX4_STEERING_MODE_A0:
 925                        err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 926                                                     priv->port,
 927                                                     priv->base_qpn,
 928                                                     1);
 929                        if (err)
 930                                en_err(priv, "Failed enabling promiscuous mode\n");
 931                        break;
 932                }
 933
 934                /* Disable port multicast filter (unconditionally) */
 935                err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 936                                          0, MLX4_MCAST_DISABLE);
 937                if (err)
 938                        en_err(priv, "Failed disabling multicast filter\n");
 939        }
 940}
 941
 942static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 943                                       struct mlx4_en_dev *mdev)
 944{
 945        int err = 0;
 946
 947        if (netif_msg_rx_status(priv))
 948                en_warn(priv, "Leaving promiscuous mode\n");
 949        priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 950
 951        /* Disable promiscouos mode */
 952        switch (mdev->dev->caps.steering_mode) {
 953        case MLX4_STEERING_MODE_DEVICE_MANAGED:
 954                err = mlx4_flow_steer_promisc_remove(mdev->dev,
 955                                                     priv->port,
 956                                                     MLX4_FS_ALL_DEFAULT);
 957                if (err)
 958                        en_err(priv, "Failed disabling promiscuous mode\n");
 959                priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 960                break;
 961
 962        case MLX4_STEERING_MODE_B0:
 963                err = mlx4_unicast_promisc_remove(mdev->dev,
 964                                                  priv->base_qpn,
 965                                                  priv->port);
 966                if (err)
 967                        en_err(priv, "Failed disabling unicast promiscuous mode\n");
 968                /* Disable Multicast promisc */
 969                if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 970                        err = mlx4_multicast_promisc_remove(mdev->dev,
 971                                                            priv->base_qpn,
 972                                                            priv->port);
 973                        if (err)
 974                                en_err(priv, "Failed disabling multicast promiscuous mode\n");
 975                        priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 976                }
 977                break;
 978
 979        case MLX4_STEERING_MODE_A0:
 980                err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 981                                             priv->port,
 982                                             priv->base_qpn, 0);
 983                if (err)
 984                        en_err(priv, "Failed disabling promiscuous mode\n");
 985                break;
 986        }
 987}
 988
 989static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 990                                 struct net_device *dev,
 991                                 struct mlx4_en_dev *mdev)
 992{
 993        struct mlx4_en_mc_list *mclist, *tmp;
 994        u64 mcast_addr = 0;
 995        u8 mc_list[16] = {0};
 996        int err = 0;
 997
 998        /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 999        if (dev->flags & IFF_ALLMULTI) {
1000                err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1001                                          0, MLX4_MCAST_DISABLE);
1002                if (err)
1003                        en_err(priv, "Failed disabling multicast filter\n");
1004
1005                /* Add the default qp number as multicast promisc */
1006                if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1007                        switch (mdev->dev->caps.steering_mode) {
1008                        case MLX4_STEERING_MODE_DEVICE_MANAGED:
1009                                err = mlx4_flow_steer_promisc_add(mdev->dev,
1010                                                                  priv->port,
1011                                                                  priv->base_qpn,
1012                                                                  MLX4_FS_MC_DEFAULT);
1013                                break;
1014
1015                        case MLX4_STEERING_MODE_B0:
1016                                err = mlx4_multicast_promisc_add(mdev->dev,
1017                                                                 priv->base_qpn,
1018                                                                 priv->port);
1019                                break;
1020
1021                        case MLX4_STEERING_MODE_A0:
1022                                break;
1023                        }
1024                        if (err)
1025                                en_err(priv, "Failed entering multicast promisc mode\n");
1026                        priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1027                }
1028        } else {
1029                /* Disable Multicast promisc */
1030                if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1031                        switch (mdev->dev->caps.steering_mode) {
1032                        case MLX4_STEERING_MODE_DEVICE_MANAGED:
1033                                err = mlx4_flow_steer_promisc_remove(mdev->dev,
1034                                                                     priv->port,
1035                                                                     MLX4_FS_MC_DEFAULT);
1036                                break;
1037
1038                        case MLX4_STEERING_MODE_B0:
1039                                err = mlx4_multicast_promisc_remove(mdev->dev,
1040                                                                    priv->base_qpn,
1041                                                                    priv->port);
1042                                break;
1043
1044                        case MLX4_STEERING_MODE_A0:
1045                                break;
1046                        }
1047                        if (err)
1048                                en_err(priv, "Failed disabling multicast promiscuous mode\n");
1049                        priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1050                }
1051
1052                err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1053                                          0, MLX4_MCAST_DISABLE);
1054                if (err)
1055                        en_err(priv, "Failed disabling multicast filter\n");
1056
1057                /* Flush mcast filter and init it with broadcast address */
1058                mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1059                                    1, MLX4_MCAST_CONFIG);
1060
1061                /* Update multicast list - we cache all addresses so they won't
1062                 * change while HW is updated holding the command semaphor */
1063                netif_addr_lock_bh(dev);
1064                mlx4_en_cache_mclist(dev);
1065                netif_addr_unlock_bh(dev);
1066                list_for_each_entry(mclist, &priv->mc_list, list) {
1067                        mcast_addr = mlx4_mac_to_u64(mclist->addr);
1068                        mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1069                                            mcast_addr, 0, MLX4_MCAST_CONFIG);
1070                }
1071                err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1072                                          0, MLX4_MCAST_ENABLE);
1073                if (err)
1074                        en_err(priv, "Failed enabling multicast filter\n");
1075
1076                update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1077                list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1078                        if (mclist->action == MCLIST_REM) {
1079                                /* detach this address and delete from list */
1080                                memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1081                                mc_list[5] = priv->port;
1082                                err = mlx4_multicast_detach(mdev->dev,
1083                                                            priv->rss_map.indir_qp,
1084                                                            mc_list,
1085                                                            MLX4_PROT_ETH,
1086                                                            mclist->reg_id);
1087                                if (err)
1088                                        en_err(priv, "Fail to detach multicast address\n");
1089
1090                                if (mclist->tunnel_reg_id) {
1091                                        err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1092                                        if (err)
1093                                                en_err(priv, "Failed to detach multicast address\n");
1094                                }
1095
1096                                /* remove from list */
1097                                list_del(&mclist->list);
1098                                kfree(mclist);
1099                        } else if (mclist->action == MCLIST_ADD) {
1100                                /* attach the address */
1101                                memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1102                                /* needed for B0 steering support */
1103                                mc_list[5] = priv->port;
1104                                err = mlx4_multicast_attach(mdev->dev,
1105                                                            priv->rss_map.indir_qp,
1106                                                            mc_list,
1107                                                            priv->port, 0,
1108                                                            MLX4_PROT_ETH,
1109                                                            &mclist->reg_id);
1110                                if (err)
1111                                        en_err(priv, "Fail to attach multicast address\n");
1112
1113                                err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1114                                                               &mclist->tunnel_reg_id);
1115                                if (err)
1116                                        en_err(priv, "Failed to attach multicast address\n");
1117                        }
1118                }
1119        }
1120}
1121
1122static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1123                                 struct net_device *dev,
1124                                 struct mlx4_en_dev *mdev)
1125{
1126        struct netdev_hw_addr *ha;
1127        struct mlx4_mac_entry *entry;
1128        struct hlist_node *tmp;
1129        bool found;
1130        u64 mac;
1131        int err = 0;
1132        struct hlist_head *bucket;
1133        unsigned int i;
1134        int removed = 0;
1135        u32 prev_flags;
1136
1137        /* Note that we do not need to protect our mac_hash traversal with rcu,
1138         * since all modification code is protected by mdev->state_lock
1139         */
1140
1141        /* find what to remove */
1142        for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1143                bucket = &priv->mac_hash[i];
1144                hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1145                        found = false;
1146                        netdev_for_each_uc_addr(ha, dev) {
1147                                if (ether_addr_equal_64bits(entry->mac,
1148                                                            ha->addr)) {
1149                                        found = true;
1150                                        break;
1151                                }
1152                        }
1153
1154                        /* MAC address of the port is not in uc list */
1155                        if (ether_addr_equal_64bits(entry->mac,
1156                                                    priv->current_mac))
1157                                found = true;
1158
1159                        if (!found) {
1160                                mac = mlx4_mac_to_u64(entry->mac);
1161                                mlx4_en_uc_steer_release(priv, entry->mac,
1162                                                         priv->base_qpn,
1163                                                         entry->reg_id);
1164                                mlx4_unregister_mac(mdev->dev, priv->port, mac);
1165
1166                                hlist_del_rcu(&entry->hlist);
1167                                kfree_rcu(entry, rcu);
1168                                en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1169                                       entry->mac, priv->port);
1170                                ++removed;
1171                        }
1172                }
1173        }
1174
1175        /* if we didn't remove anything, there is no use in trying to add
1176         * again once we are in a forced promisc mode state
1177         */
1178        if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1179                return;
1180
1181        prev_flags = priv->flags;
1182        priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1183
1184        /* find what to add */
1185        netdev_for_each_uc_addr(ha, dev) {
1186                found = false;
1187                bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1188                hlist_for_each_entry(entry, bucket, hlist) {
1189                        if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1190                                found = true;
1191                                break;
1192                        }
1193                }
1194
1195                if (!found) {
1196                        entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1197                        if (!entry) {
1198                                en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1199                                       ha->addr, priv->port);
1200                                priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1201                                break;
1202                        }
1203                        mac = mlx4_mac_to_u64(ha->addr);
1204                        memcpy(entry->mac, ha->addr, ETH_ALEN);
1205                        err = mlx4_register_mac(mdev->dev, priv->port, mac);
1206                        if (err < 0) {
1207                                en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1208                                       ha->addr, priv->port, err);
1209                                kfree(entry);
1210                                priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1211                                break;
1212                        }
1213                        err = mlx4_en_uc_steer_add(priv, ha->addr,
1214                                                   &priv->base_qpn,
1215                                                   &entry->reg_id);
1216                        if (err) {
1217                                en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1218                                       ha->addr, priv->port, err);
1219                                mlx4_unregister_mac(mdev->dev, priv->port, mac);
1220                                kfree(entry);
1221                                priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1222                                break;
1223                        } else {
1224                                unsigned int mac_hash;
1225                                en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1226                                       ha->addr, priv->port);
1227                                mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1228                                bucket = &priv->mac_hash[mac_hash];
1229                                hlist_add_head_rcu(&entry->hlist, bucket);
1230                        }
1231                }
1232        }
1233
1234        if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1235                en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1236                        priv->port);
1237        } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1238                en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1239                        priv->port);
1240        }
1241}
1242
1243static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1244{
1245        struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1246                                                 rx_mode_task);
1247        struct mlx4_en_dev *mdev = priv->mdev;
1248        struct net_device *dev = priv->dev;
1249
1250        mutex_lock(&mdev->state_lock);
1251        if (!mdev->device_up) {
1252                en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1253                goto out;
1254        }
1255        if (!priv->port_up) {
1256                en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1257                goto out;
1258        }
1259
1260        if (!netif_carrier_ok(dev)) {
1261                if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1262                        if (priv->port_state.link_state) {
1263                                priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1264                                netif_carrier_on(dev);
1265                                en_dbg(LINK, priv, "Link Up\n");
1266                        }
1267                }
1268        }
1269
1270        if (dev->priv_flags & IFF_UNICAST_FLT)
1271                mlx4_en_do_uc_filter(priv, dev, mdev);
1272
1273        /* Promsicuous mode: disable all filters */
1274        if ((dev->flags & IFF_PROMISC) ||
1275            (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1276                mlx4_en_set_promisc_mode(priv, mdev);
1277                goto out;
1278        }
1279
1280        /* Not in promiscuous mode */
1281        if (priv->flags & MLX4_EN_FLAG_PROMISC)
1282                mlx4_en_clear_promisc_mode(priv, mdev);
1283
1284        mlx4_en_do_multicast(priv, dev, mdev);
1285out:
1286        mutex_unlock(&mdev->state_lock);
1287}
1288
1289#ifdef CONFIG_NET_POLL_CONTROLLER
1290static void mlx4_en_netpoll(struct net_device *dev)
1291{
1292        struct mlx4_en_priv *priv = netdev_priv(dev);
1293        struct mlx4_en_cq *cq;
1294        int i;
1295
1296        for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1297                cq = priv->tx_cq[TX][i];
1298                napi_schedule(&cq->napi);
1299        }
1300}
1301#endif
1302
1303static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1304{
1305        u64 reg_id;
1306        int err = 0;
1307        int *qpn = &priv->base_qpn;
1308        struct mlx4_mac_entry *entry;
1309
1310        err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1311        if (err)
1312                return err;
1313
1314        err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1315                                       &priv->tunnel_reg_id);
1316        if (err)
1317                goto tunnel_err;
1318
1319        entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1320        if (!entry) {
1321                err = -ENOMEM;
1322                goto alloc_err;
1323        }
1324
1325        memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1326        memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1327        entry->reg_id = reg_id;
1328        hlist_add_head_rcu(&entry->hlist,
1329                           &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1330
1331        return 0;
1332
1333alloc_err:
1334        if (priv->tunnel_reg_id)
1335                mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1336
1337tunnel_err:
1338        mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1339        return err;
1340}
1341
1342static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1343{
1344        u64 mac;
1345        unsigned int i;
1346        int qpn = priv->base_qpn;
1347        struct hlist_head *bucket;
1348        struct hlist_node *tmp;
1349        struct mlx4_mac_entry *entry;
1350
1351        for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1352                bucket = &priv->mac_hash[i];
1353                hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1354                        mac = mlx4_mac_to_u64(entry->mac);
1355                        en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1356                               entry->mac);
1357                        mlx4_en_uc_steer_release(priv, entry->mac,
1358                                                 qpn, entry->reg_id);
1359
1360                        mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1361                        hlist_del_rcu(&entry->hlist);
1362                        kfree_rcu(entry, rcu);
1363                }
1364        }
1365
1366        if (priv->tunnel_reg_id) {
1367                mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1368                priv->tunnel_reg_id = 0;
1369        }
1370}
1371
1372static void mlx4_en_tx_timeout(struct net_device *dev)
1373{
1374        struct mlx4_en_priv *priv = netdev_priv(dev);
1375        struct mlx4_en_dev *mdev = priv->mdev;
1376        int i;
1377
1378        if (netif_msg_timer(priv))
1379                en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1380
1381        for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1382                struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][i];
1383
1384                if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1385                        continue;
1386                en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1387                        i, tx_ring->qpn, tx_ring->sp_cqn,
1388                        tx_ring->cons, tx_ring->prod);
1389        }
1390
1391        priv->port_stats.tx_timeout++;
1392        en_dbg(DRV, priv, "Scheduling watchdog\n");
1393        queue_work(mdev->workqueue, &priv->watchdog_task);
1394}
1395
1396
1397static void
1398mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1399{
1400        struct mlx4_en_priv *priv = netdev_priv(dev);
1401
1402        spin_lock_bh(&priv->stats_lock);
1403        mlx4_en_fold_software_stats(dev);
1404        netdev_stats_to_stats64(stats, &dev->stats);
1405        spin_unlock_bh(&priv->stats_lock);
1406}
1407
1408static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1409{
1410        struct mlx4_en_cq *cq;
1411        int i, t;
1412
1413        /* If we haven't received a specific coalescing setting
1414         * (module param), we set the moderation parameters as follows:
1415         * - moder_cnt is set to the number of mtu sized packets to
1416         *   satisfy our coalescing target.
1417         * - moder_time is set to a fixed value.
1418         */
1419        priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1420        priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1421        priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1422        priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1423        en_dbg(INTR, priv, "Default coalescing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1424               priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1425
1426        /* Setup cq moderation params */
1427        for (i = 0; i < priv->rx_ring_num; i++) {
1428                cq = priv->rx_cq[i];
1429                cq->moder_cnt = priv->rx_frames;
1430                cq->moder_time = priv->rx_usecs;
1431                priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1432                priv->last_moder_packets[i] = 0;
1433                priv->last_moder_bytes[i] = 0;
1434        }
1435
1436        for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1437                for (i = 0; i < priv->tx_ring_num[t]; i++) {
1438                        cq = priv->tx_cq[t][i];
1439                        cq->moder_cnt = priv->tx_frames;
1440                        cq->moder_time = priv->tx_usecs;
1441                }
1442        }
1443
1444        /* Reset auto-moderation params */
1445        priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1446        priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1447        priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1448        priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1449        priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1450        priv->adaptive_rx_coal = 1;
1451        priv->last_moder_jiffies = 0;
1452        priv->last_moder_tx_packets = 0;
1453}
1454
1455static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1456{
1457        unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1458        u32 pkt_rate_high, pkt_rate_low;
1459        struct mlx4_en_cq *cq;
1460        unsigned long packets;
1461        unsigned long rate;
1462        unsigned long avg_pkt_size;
1463        unsigned long rx_packets;
1464        unsigned long rx_bytes;
1465        unsigned long rx_pkt_diff;
1466        int moder_time;
1467        int ring, err;
1468
1469        if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1470                return;
1471
1472        pkt_rate_low = READ_ONCE(priv->pkt_rate_low);
1473        pkt_rate_high = READ_ONCE(priv->pkt_rate_high);
1474
1475        for (ring = 0; ring < priv->rx_ring_num; ring++) {
1476                rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1477                rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1478
1479                rx_pkt_diff = rx_packets - priv->last_moder_packets[ring];
1480                packets = rx_pkt_diff;
1481                rate = packets * HZ / period;
1482                avg_pkt_size = packets ? (rx_bytes -
1483                                priv->last_moder_bytes[ring]) / packets : 0;
1484
1485                /* Apply auto-moderation only when packet rate
1486                 * exceeds a rate that it matters */
1487                if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1488                    avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1489                        if (rate <= pkt_rate_low)
1490                                moder_time = priv->rx_usecs_low;
1491                        else if (rate >= pkt_rate_high)
1492                                moder_time = priv->rx_usecs_high;
1493                        else
1494                                moder_time = (rate - pkt_rate_low) *
1495                                        (priv->rx_usecs_high - priv->rx_usecs_low) /
1496                                        (pkt_rate_high - pkt_rate_low) +
1497                                        priv->rx_usecs_low;
1498                } else {
1499                        moder_time = priv->rx_usecs_low;
1500                }
1501
1502                cq = priv->rx_cq[ring];
1503                if (moder_time != priv->last_moder_time[ring] ||
1504                    cq->moder_cnt != priv->rx_frames) {
1505                        priv->last_moder_time[ring] = moder_time;
1506                        cq->moder_time = moder_time;
1507                        cq->moder_cnt = priv->rx_frames;
1508                        err = mlx4_en_set_cq_moder(priv, cq);
1509                        if (err)
1510                                en_err(priv, "Failed modifying moderation for cq:%d\n",
1511                                       ring);
1512                }
1513                priv->last_moder_packets[ring] = rx_packets;
1514                priv->last_moder_bytes[ring] = rx_bytes;
1515        }
1516
1517        priv->last_moder_jiffies = jiffies;
1518}
1519
1520static void mlx4_en_do_get_stats(struct work_struct *work)
1521{
1522        struct delayed_work *delay = to_delayed_work(work);
1523        struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1524                                                 stats_task);
1525        struct mlx4_en_dev *mdev = priv->mdev;
1526        int err;
1527
1528        mutex_lock(&mdev->state_lock);
1529        if (mdev->device_up) {
1530                if (priv->port_up) {
1531                        err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1532                        if (err)
1533                                en_dbg(HW, priv, "Could not update stats\n");
1534
1535                        mlx4_en_auto_moderation(priv);
1536                }
1537
1538                queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1539        }
1540        if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1541                mlx4_en_do_set_mac(priv, priv->current_mac);
1542                mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1543        }
1544        mutex_unlock(&mdev->state_lock);
1545}
1546
1547/* mlx4_en_service_task - Run service task for tasks that needed to be done
1548 * periodically
1549 */
1550static void mlx4_en_service_task(struct work_struct *work)
1551{
1552        struct delayed_work *delay = to_delayed_work(work);
1553        struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1554                                                 service_task);
1555        struct mlx4_en_dev *mdev = priv->mdev;
1556
1557        mutex_lock(&mdev->state_lock);
1558        if (mdev->device_up) {
1559                if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1560                        mlx4_en_ptp_overflow_check(mdev);
1561
1562                mlx4_en_recover_from_oom(priv);
1563                queue_delayed_work(mdev->workqueue, &priv->service_task,
1564                                   SERVICE_TASK_DELAY);
1565        }
1566        mutex_unlock(&mdev->state_lock);
1567}
1568
1569static void mlx4_en_linkstate(struct work_struct *work)
1570{
1571        struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1572                                                 linkstate_task);
1573        struct mlx4_en_dev *mdev = priv->mdev;
1574        int linkstate = priv->link_state;
1575
1576        mutex_lock(&mdev->state_lock);
1577        /* If observable port state changed set carrier state and
1578         * report to system log */
1579        if (priv->last_link_state != linkstate) {
1580                if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1581                        en_info(priv, "Link Down\n");
1582                        netif_carrier_off(priv->dev);
1583                } else {
1584                        en_info(priv, "Link Up\n");
1585                        netif_carrier_on(priv->dev);
1586                }
1587        }
1588        priv->last_link_state = linkstate;
1589        mutex_unlock(&mdev->state_lock);
1590}
1591
1592static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1593{
1594        struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1595        int numa_node = priv->mdev->dev->numa_node;
1596
1597        if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1598                return -ENOMEM;
1599
1600        cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1601                        ring->affinity_mask);
1602        return 0;
1603}
1604
1605static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1606{
1607        free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1608}
1609
1610static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1611                                      int tx_ring_idx)
1612{
1613        struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1614        int rr_index = tx_ring_idx;
1615
1616        tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1617        tx_ring->recycle_ring = priv->rx_ring[rr_index];
1618        en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1619               TX_XDP, tx_ring_idx, rr_index);
1620}
1621
1622int mlx4_en_start_port(struct net_device *dev)
1623{
1624        struct mlx4_en_priv *priv = netdev_priv(dev);
1625        struct mlx4_en_dev *mdev = priv->mdev;
1626        struct mlx4_en_cq *cq;
1627        struct mlx4_en_tx_ring *tx_ring;
1628        int rx_index = 0;
1629        int err = 0;
1630        int i, t;
1631        int j;
1632        u8 mc_list[16] = {0};
1633
1634        if (priv->port_up) {
1635                en_dbg(DRV, priv, "start port called while port already up\n");
1636                return 0;
1637        }
1638
1639        INIT_LIST_HEAD(&priv->mc_list);
1640        INIT_LIST_HEAD(&priv->curr_list);
1641        INIT_LIST_HEAD(&priv->ethtool_list);
1642        memset(&priv->ethtool_rules[0], 0,
1643               sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1644
1645        /* Calculate Rx buf size */
1646        dev->mtu = min(dev->mtu, priv->max_mtu);
1647        mlx4_en_calc_rx_buf(dev);
1648        en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1649
1650        /* Configure rx cq's and rings */
1651        err = mlx4_en_activate_rx_rings(priv);
1652        if (err) {
1653                en_err(priv, "Failed to activate RX rings\n");
1654                return err;
1655        }
1656        for (i = 0; i < priv->rx_ring_num; i++) {
1657                cq = priv->rx_cq[i];
1658
1659                err = mlx4_en_init_affinity_hint(priv, i);
1660                if (err) {
1661                        en_err(priv, "Failed preparing IRQ affinity hint\n");
1662                        goto cq_err;
1663                }
1664
1665                err = mlx4_en_activate_cq(priv, cq, i);
1666                if (err) {
1667                        en_err(priv, "Failed activating Rx CQ\n");
1668                        mlx4_en_free_affinity_hint(priv, i);
1669                        goto cq_err;
1670                }
1671
1672                for (j = 0; j < cq->size; j++) {
1673                        struct mlx4_cqe *cqe = NULL;
1674
1675                        cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1676                              priv->cqe_factor;
1677                        cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1678                }
1679
1680                err = mlx4_en_set_cq_moder(priv, cq);
1681                if (err) {
1682                        en_err(priv, "Failed setting cq moderation parameters\n");
1683                        mlx4_en_deactivate_cq(priv, cq);
1684                        mlx4_en_free_affinity_hint(priv, i);
1685                        goto cq_err;
1686                }
1687                mlx4_en_arm_cq(priv, cq);
1688                priv->rx_ring[i]->cqn = cq->mcq.cqn;
1689                ++rx_index;
1690        }
1691
1692        /* Set qp number */
1693        en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1694        err = mlx4_en_get_qp(priv);
1695        if (err) {
1696                en_err(priv, "Failed getting eth qp\n");
1697                goto cq_err;
1698        }
1699        mdev->mac_removed[priv->port] = 0;
1700
1701        priv->counter_index =
1702                        mlx4_get_default_counter_index(mdev->dev, priv->port);
1703
1704        err = mlx4_en_config_rss_steer(priv);
1705        if (err) {
1706                en_err(priv, "Failed configuring rss steering\n");
1707                goto mac_err;
1708        }
1709
1710        err = mlx4_en_create_drop_qp(priv);
1711        if (err)
1712                goto rss_err;
1713
1714        /* Configure tx cq's and rings */
1715        for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1716                u8 num_tx_rings_p_up = t == TX ?
1717                        priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1718
1719                for (i = 0; i < priv->tx_ring_num[t]; i++) {
1720                        /* Configure cq */
1721                        cq = priv->tx_cq[t][i];
1722                        err = mlx4_en_activate_cq(priv, cq, i);
1723                        if (err) {
1724                                en_err(priv, "Failed allocating Tx CQ\n");
1725                                goto tx_err;
1726                        }
1727                        err = mlx4_en_set_cq_moder(priv, cq);
1728                        if (err) {
1729                                en_err(priv, "Failed setting cq moderation parameters\n");
1730                                mlx4_en_deactivate_cq(priv, cq);
1731                                goto tx_err;
1732                        }
1733                        en_dbg(DRV, priv,
1734                               "Resetting index of collapsed CQ:%d to -1\n", i);
1735                        cq->buf->wqe_index = cpu_to_be16(0xffff);
1736
1737                        /* Configure ring */
1738                        tx_ring = priv->tx_ring[t][i];
1739                        err = mlx4_en_activate_tx_ring(priv, tx_ring,
1740                                                       cq->mcq.cqn,
1741                                                       i / num_tx_rings_p_up);
1742                        if (err) {
1743                                en_err(priv, "Failed allocating Tx ring\n");
1744                                mlx4_en_deactivate_cq(priv, cq);
1745                                goto tx_err;
1746                        }
1747                        if (t != TX_XDP) {
1748                                tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1749                                tx_ring->recycle_ring = NULL;
1750
1751                                /* Arm CQ for TX completions */
1752                                mlx4_en_arm_cq(priv, cq);
1753
1754                        } else {
1755                                mlx4_en_init_recycle_ring(priv, i);
1756                                /* XDP TX CQ should never be armed */
1757                        }
1758
1759                        /* Set initial ownership of all Tx TXBBs to SW (1) */
1760                        for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1761                                *((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1762                }
1763        }
1764
1765        /* Configure port */
1766        err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1767                                    priv->rx_skb_size + ETH_FCS_LEN,
1768                                    priv->prof->tx_pause,
1769                                    priv->prof->tx_ppp,
1770                                    priv->prof->rx_pause,
1771                                    priv->prof->rx_ppp);
1772        if (err) {
1773                en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1774                       priv->port, err);
1775                goto tx_err;
1776        }
1777
1778        err = mlx4_SET_PORT_user_mtu(mdev->dev, priv->port, dev->mtu);
1779        if (err) {
1780                en_err(priv, "Failed to pass user MTU(%d) to Firmware for port %d, with error %d\n",
1781                       dev->mtu, priv->port, err);
1782                goto tx_err;
1783        }
1784
1785        /* Set default qp number */
1786        err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1787        if (err) {
1788                en_err(priv, "Failed setting default qp numbers\n");
1789                goto tx_err;
1790        }
1791
1792        if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1793                err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1794                if (err) {
1795                        en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1796                               err);
1797                        goto tx_err;
1798                }
1799        }
1800
1801        /* Init port */
1802        en_dbg(HW, priv, "Initializing port\n");
1803        err = mlx4_INIT_PORT(mdev->dev, priv->port);
1804        if (err) {
1805                en_err(priv, "Failed Initializing port\n");
1806                goto tx_err;
1807        }
1808
1809        /* Set Unicast and VXLAN steering rules */
1810        if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1811            mlx4_en_set_rss_steer_rules(priv))
1812                mlx4_warn(mdev, "Failed setting steering rules\n");
1813
1814        /* Attach rx QP to bradcast address */
1815        eth_broadcast_addr(&mc_list[10]);
1816        mc_list[5] = priv->port; /* needed for B0 steering support */
1817        if (mlx4_multicast_attach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1818                                  priv->port, 0, MLX4_PROT_ETH,
1819                                  &priv->broadcast_id))
1820                mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1821
1822        /* Must redo promiscuous mode setup. */
1823        priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1824
1825        /* Schedule multicast task to populate multicast list */
1826        queue_work(mdev->workqueue, &priv->rx_mode_task);
1827
1828        if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1829                udp_tunnel_get_rx_info(dev);
1830
1831        priv->port_up = true;
1832
1833        /* Process all completions if exist to prevent
1834         * the queues freezing if they are full
1835         */
1836        for (i = 0; i < priv->rx_ring_num; i++) {
1837                local_bh_disable();
1838                napi_schedule(&priv->rx_cq[i]->napi);
1839                local_bh_enable();
1840        }
1841
1842        netif_tx_start_all_queues(dev);
1843        netif_device_attach(dev);
1844
1845        return 0;
1846
1847tx_err:
1848        if (t == MLX4_EN_NUM_TX_TYPES) {
1849                t--;
1850                i = priv->tx_ring_num[t];
1851        }
1852        while (t >= 0) {
1853                while (i--) {
1854                        mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1855                        mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1856                }
1857                if (!t--)
1858                        break;
1859                i = priv->tx_ring_num[t];
1860        }
1861        mlx4_en_destroy_drop_qp(priv);
1862rss_err:
1863        mlx4_en_release_rss_steer(priv);
1864mac_err:
1865        mlx4_en_put_qp(priv);
1866cq_err:
1867        while (rx_index--) {
1868                mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1869                mlx4_en_free_affinity_hint(priv, rx_index);
1870        }
1871        for (i = 0; i < priv->rx_ring_num; i++)
1872                mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1873
1874        return err; /* need to close devices */
1875}
1876
1877
1878void mlx4_en_stop_port(struct net_device *dev, int detach)
1879{
1880        struct mlx4_en_priv *priv = netdev_priv(dev);
1881        struct mlx4_en_dev *mdev = priv->mdev;
1882        struct mlx4_en_mc_list *mclist, *tmp;
1883        struct ethtool_flow_id *flow, *tmp_flow;
1884        int i, t;
1885        u8 mc_list[16] = {0};
1886
1887        if (!priv->port_up) {
1888                en_dbg(DRV, priv, "stop port called while port already down\n");
1889                return;
1890        }
1891
1892        /* close port*/
1893        mlx4_CLOSE_PORT(mdev->dev, priv->port);
1894
1895        /* Synchronize with tx routine */
1896        netif_tx_lock_bh(dev);
1897        if (detach)
1898                netif_device_detach(dev);
1899        netif_tx_stop_all_queues(dev);
1900        netif_tx_unlock_bh(dev);
1901
1902        netif_tx_disable(dev);
1903
1904        spin_lock_bh(&priv->stats_lock);
1905        mlx4_en_fold_software_stats(dev);
1906        /* Set port as not active */
1907        priv->port_up = false;
1908        spin_unlock_bh(&priv->stats_lock);
1909
1910        priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1911
1912        /* Promsicuous mode */
1913        if (mdev->dev->caps.steering_mode ==
1914            MLX4_STEERING_MODE_DEVICE_MANAGED) {
1915                priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1916                                 MLX4_EN_FLAG_MC_PROMISC);
1917                mlx4_flow_steer_promisc_remove(mdev->dev,
1918                                               priv->port,
1919                                               MLX4_FS_ALL_DEFAULT);
1920                mlx4_flow_steer_promisc_remove(mdev->dev,
1921                                               priv->port,
1922                                               MLX4_FS_MC_DEFAULT);
1923        } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1924                priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1925
1926                /* Disable promiscouos mode */
1927                mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1928                                            priv->port);
1929
1930                /* Disable Multicast promisc */
1931                if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1932                        mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1933                                                      priv->port);
1934                        priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1935                }
1936        }
1937
1938        /* Detach All multicasts */
1939        eth_broadcast_addr(&mc_list[10]);
1940        mc_list[5] = priv->port; /* needed for B0 steering support */
1941        mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1942                              MLX4_PROT_ETH, priv->broadcast_id);
1943        list_for_each_entry(mclist, &priv->curr_list, list) {
1944                memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1945                mc_list[5] = priv->port;
1946                mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp,
1947                                      mc_list, MLX4_PROT_ETH, mclist->reg_id);
1948                if (mclist->tunnel_reg_id)
1949                        mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1950        }
1951        mlx4_en_clear_list(dev);
1952        list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1953                list_del(&mclist->list);
1954                kfree(mclist);
1955        }
1956
1957        /* Flush multicast filter */
1958        mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1959
1960        /* Remove flow steering rules for the port*/
1961        if (mdev->dev->caps.steering_mode ==
1962            MLX4_STEERING_MODE_DEVICE_MANAGED) {
1963                ASSERT_RTNL();
1964                list_for_each_entry_safe(flow, tmp_flow,
1965                                         &priv->ethtool_list, list) {
1966                        mlx4_flow_detach(mdev->dev, flow->id);
1967                        list_del(&flow->list);
1968                }
1969        }
1970
1971        mlx4_en_destroy_drop_qp(priv);
1972
1973        /* Free TX Rings */
1974        for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1975                for (i = 0; i < priv->tx_ring_num[t]; i++) {
1976                        mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1977                        mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1978                }
1979        }
1980        msleep(10);
1981
1982        for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1983                for (i = 0; i < priv->tx_ring_num[t]; i++)
1984                        mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]);
1985
1986        if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1987                mlx4_en_delete_rss_steer_rules(priv);
1988
1989        /* Free RSS qps */
1990        mlx4_en_release_rss_steer(priv);
1991
1992        /* Unregister Mac address for the port */
1993        mlx4_en_put_qp(priv);
1994        if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1995                mdev->mac_removed[priv->port] = 1;
1996
1997        /* Free RX Rings */
1998        for (i = 0; i < priv->rx_ring_num; i++) {
1999                struct mlx4_en_cq *cq = priv->rx_cq[i];
2000
2001                napi_synchronize(&cq->napi);
2002                mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
2003                mlx4_en_deactivate_cq(priv, cq);
2004
2005                mlx4_en_free_affinity_hint(priv, i);
2006        }
2007}
2008
2009static void mlx4_en_restart(struct work_struct *work)
2010{
2011        struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2012                                                 watchdog_task);
2013        struct mlx4_en_dev *mdev = priv->mdev;
2014        struct net_device *dev = priv->dev;
2015
2016        en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
2017
2018        rtnl_lock();
2019        mutex_lock(&mdev->state_lock);
2020        if (priv->port_up) {
2021                mlx4_en_stop_port(dev, 1);
2022                if (mlx4_en_start_port(dev))
2023                        en_err(priv, "Failed restarting port %d\n", priv->port);
2024        }
2025        mutex_unlock(&mdev->state_lock);
2026        rtnl_unlock();
2027}
2028
2029static void mlx4_en_clear_stats(struct net_device *dev)
2030{
2031        struct mlx4_en_priv *priv = netdev_priv(dev);
2032        struct mlx4_en_dev *mdev = priv->mdev;
2033        struct mlx4_en_tx_ring **tx_ring;
2034        int i;
2035
2036        if (!mlx4_is_slave(mdev->dev))
2037                if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
2038                        en_dbg(HW, priv, "Failed dumping statistics\n");
2039
2040        memset(&priv->pstats, 0, sizeof(priv->pstats));
2041        memset(&priv->pkstats, 0, sizeof(priv->pkstats));
2042        memset(&priv->port_stats, 0, sizeof(priv->port_stats));
2043        memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
2044        memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
2045        memset(&priv->rx_priority_flowstats, 0,
2046               sizeof(priv->rx_priority_flowstats));
2047        memset(&priv->tx_priority_flowstats, 0,
2048               sizeof(priv->tx_priority_flowstats));
2049        memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
2050
2051        tx_ring = priv->tx_ring[TX];
2052        for (i = 0; i < priv->tx_ring_num[TX]; i++) {
2053                tx_ring[i]->bytes = 0;
2054                tx_ring[i]->packets = 0;
2055                tx_ring[i]->tx_csum = 0;
2056                tx_ring[i]->tx_dropped = 0;
2057                tx_ring[i]->queue_stopped = 0;
2058                tx_ring[i]->wake_queue = 0;
2059                tx_ring[i]->tso_packets = 0;
2060                tx_ring[i]->xmit_more = 0;
2061        }
2062        for (i = 0; i < priv->rx_ring_num; i++) {
2063                priv->rx_ring[i]->bytes = 0;
2064                priv->rx_ring[i]->packets = 0;
2065                priv->rx_ring[i]->csum_ok = 0;
2066                priv->rx_ring[i]->csum_none = 0;
2067                priv->rx_ring[i]->csum_complete = 0;
2068        }
2069}
2070
2071static int mlx4_en_open(struct net_device *dev)
2072{
2073        struct mlx4_en_priv *priv = netdev_priv(dev);
2074        struct mlx4_en_dev *mdev = priv->mdev;
2075        int err = 0;
2076
2077        mutex_lock(&mdev->state_lock);
2078
2079        if (!mdev->device_up) {
2080                en_err(priv, "Cannot open - device down/disabled\n");
2081                err = -EBUSY;
2082                goto out;
2083        }
2084
2085        /* Reset HW statistics and SW counters */
2086        mlx4_en_clear_stats(dev);
2087
2088        err = mlx4_en_start_port(dev);
2089        if (err)
2090                en_err(priv, "Failed starting port:%d\n", priv->port);
2091
2092out:
2093        mutex_unlock(&mdev->state_lock);
2094        return err;
2095}
2096
2097
2098static int mlx4_en_close(struct net_device *dev)
2099{
2100        struct mlx4_en_priv *priv = netdev_priv(dev);
2101        struct mlx4_en_dev *mdev = priv->mdev;
2102
2103        en_dbg(IFDOWN, priv, "Close port called\n");
2104
2105        mutex_lock(&mdev->state_lock);
2106
2107        mlx4_en_stop_port(dev, 0);
2108        netif_carrier_off(dev);
2109
2110        mutex_unlock(&mdev->state_lock);
2111        return 0;
2112}
2113
2114static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2115{
2116        int i, t;
2117
2118#ifdef CONFIG_RFS_ACCEL
2119        priv->dev->rx_cpu_rmap = NULL;
2120#endif
2121
2122        for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2123                for (i = 0; i < priv->tx_ring_num[t]; i++) {
2124                        if (priv->tx_ring[t] && priv->tx_ring[t][i])
2125                                mlx4_en_destroy_tx_ring(priv,
2126                                                        &priv->tx_ring[t][i]);
2127                        if (priv->tx_cq[t] && priv->tx_cq[t][i])
2128                                mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2129                }
2130                kfree(priv->tx_ring[t]);
2131                kfree(priv->tx_cq[t]);
2132        }
2133
2134        for (i = 0; i < priv->rx_ring_num; i++) {
2135                if (priv->rx_ring[i])
2136                        mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2137                                priv->prof->rx_ring_size, priv->stride);
2138                if (priv->rx_cq[i])
2139                        mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2140        }
2141
2142}
2143
2144static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2145{
2146        struct mlx4_en_port_profile *prof = priv->prof;
2147        int i, t;
2148        int node;
2149
2150        /* Create tx Rings */
2151        for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2152                for (i = 0; i < priv->tx_ring_num[t]; i++) {
2153                        node = cpu_to_node(i % num_online_cpus());
2154                        if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i],
2155                                              prof->tx_ring_size, i, t, node))
2156                                goto err;
2157
2158                        if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i],
2159                                                   prof->tx_ring_size,
2160                                                   TXBB_SIZE, node, i))
2161                                goto err;
2162                }
2163        }
2164
2165        /* Create rx Rings */
2166        for (i = 0; i < priv->rx_ring_num; i++) {
2167                node = cpu_to_node(i % num_online_cpus());
2168                if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2169                                      prof->rx_ring_size, i, RX, node))
2170                        goto err;
2171
2172                if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2173                                           prof->rx_ring_size, priv->stride,
2174                                           node))
2175                        goto err;
2176        }
2177
2178#ifdef CONFIG_RFS_ACCEL
2179        priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2180#endif
2181
2182        return 0;
2183
2184err:
2185        en_err(priv, "Failed to allocate NIC resources\n");
2186        for (i = 0; i < priv->rx_ring_num; i++) {
2187                if (priv->rx_ring[i])
2188                        mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2189                                                prof->rx_ring_size,
2190                                                priv->stride);
2191                if (priv->rx_cq[i])
2192                        mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2193        }
2194        for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2195                for (i = 0; i < priv->tx_ring_num[t]; i++) {
2196                        if (priv->tx_ring[t][i])
2197                                mlx4_en_destroy_tx_ring(priv,
2198                                                        &priv->tx_ring[t][i]);
2199                        if (priv->tx_cq[t][i])
2200                                mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2201                }
2202        }
2203        return -ENOMEM;
2204}
2205
2206
2207static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2208                             struct mlx4_en_priv *src,
2209                             struct mlx4_en_port_profile *prof)
2210{
2211        int t;
2212
2213        memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2214               sizeof(dst->hwtstamp_config));
2215        dst->num_tx_rings_p_up = prof->num_tx_rings_p_up;
2216        dst->rx_ring_num = prof->rx_ring_num;
2217        dst->flags = prof->flags;
2218        dst->mdev = src->mdev;
2219        dst->port = src->port;
2220        dst->dev = src->dev;
2221        dst->prof = prof;
2222        dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2223                                         DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2224
2225        for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2226                dst->tx_ring_num[t] = prof->tx_ring_num[t];
2227                if (!dst->tx_ring_num[t])
2228                        continue;
2229
2230                dst->tx_ring[t] = kzalloc(sizeof(struct mlx4_en_tx_ring *) *
2231                                          MAX_TX_RINGS, GFP_KERNEL);
2232                if (!dst->tx_ring[t])
2233                        goto err_free_tx;
2234
2235                dst->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) *
2236                                        MAX_TX_RINGS, GFP_KERNEL);
2237                if (!dst->tx_cq[t]) {
2238                        kfree(dst->tx_ring[t]);
2239                        goto err_free_tx;
2240                }
2241        }
2242
2243        return 0;
2244
2245err_free_tx:
2246        while (t--) {
2247                kfree(dst->tx_ring[t]);
2248                kfree(dst->tx_cq[t]);
2249        }
2250        return -ENOMEM;
2251}
2252
2253static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2254                                struct mlx4_en_priv *src)
2255{
2256        int t;
2257        memcpy(dst->rx_ring, src->rx_ring,
2258               sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2259        memcpy(dst->rx_cq, src->rx_cq,
2260               sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2261        memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2262               sizeof(dst->hwtstamp_config));
2263        for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2264                dst->tx_ring_num[t] = src->tx_ring_num[t];
2265                dst->tx_ring[t] = src->tx_ring[t];
2266                dst->tx_cq[t] = src->tx_cq[t];
2267        }
2268        dst->num_tx_rings_p_up = src->num_tx_rings_p_up;
2269        dst->rx_ring_num = src->rx_ring_num;
2270        memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2271}
2272
2273int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2274                                struct mlx4_en_priv *tmp,
2275                                struct mlx4_en_port_profile *prof,
2276                                bool carry_xdp_prog)
2277{
2278        struct bpf_prog *xdp_prog;
2279        int i, t;
2280
2281        mlx4_en_copy_priv(tmp, priv, prof);
2282
2283        if (mlx4_en_alloc_resources(tmp)) {
2284                en_warn(priv,
2285                        "%s: Resource allocation failed, using previous configuration\n",
2286                        __func__);
2287                for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2288                        kfree(tmp->tx_ring[t]);
2289                        kfree(tmp->tx_cq[t]);
2290                }
2291                return -ENOMEM;
2292        }
2293
2294        /* All rx_rings has the same xdp_prog.  Pick the first one. */
2295        xdp_prog = rcu_dereference_protected(
2296                priv->rx_ring[0]->xdp_prog,
2297                lockdep_is_held(&priv->mdev->state_lock));
2298
2299        if (xdp_prog && carry_xdp_prog) {
2300                xdp_prog = bpf_prog_add(xdp_prog, tmp->rx_ring_num);
2301                if (IS_ERR(xdp_prog)) {
2302                        mlx4_en_free_resources(tmp);
2303                        return PTR_ERR(xdp_prog);
2304                }
2305                for (i = 0; i < tmp->rx_ring_num; i++)
2306                        rcu_assign_pointer(tmp->rx_ring[i]->xdp_prog,
2307                                           xdp_prog);
2308        }
2309
2310        return 0;
2311}
2312
2313void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2314                                    struct mlx4_en_priv *tmp)
2315{
2316        mlx4_en_free_resources(priv);
2317        mlx4_en_update_priv(priv, tmp);
2318}
2319
2320void mlx4_en_destroy_netdev(struct net_device *dev)
2321{
2322        struct mlx4_en_priv *priv = netdev_priv(dev);
2323        struct mlx4_en_dev *mdev = priv->mdev;
2324
2325        en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2326
2327        /* Unregister device - this will close the port if it was up */
2328        if (priv->registered) {
2329                devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2330                                                              priv->port));
2331                unregister_netdev(dev);
2332        }
2333
2334        if (priv->allocated)
2335                mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2336
2337        cancel_delayed_work(&priv->stats_task);
2338        cancel_delayed_work(&priv->service_task);
2339        /* flush any pending task for this netdev */
2340        flush_workqueue(mdev->workqueue);
2341
2342        if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2343                mlx4_en_remove_timestamp(mdev);
2344
2345        /* Detach the netdev so tasks would not attempt to access it */
2346        mutex_lock(&mdev->state_lock);
2347        mdev->pndev[priv->port] = NULL;
2348        mdev->upper[priv->port] = NULL;
2349
2350#ifdef CONFIG_RFS_ACCEL
2351        mlx4_en_cleanup_filters(priv);
2352#endif
2353
2354        mlx4_en_free_resources(priv);
2355        mutex_unlock(&mdev->state_lock);
2356
2357        free_netdev(dev);
2358}
2359
2360static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2361{
2362        struct mlx4_en_priv *priv = netdev_priv(dev);
2363
2364        if (mtu > MLX4_EN_MAX_XDP_MTU) {
2365                en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2366                       mtu, MLX4_EN_MAX_XDP_MTU);
2367                return false;
2368        }
2369
2370        return true;
2371}
2372
2373static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2374{
2375        struct mlx4_en_priv *priv = netdev_priv(dev);
2376        struct mlx4_en_dev *mdev = priv->mdev;
2377        int err = 0;
2378
2379        en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2380                 dev->mtu, new_mtu);
2381
2382        if (priv->tx_ring_num[TX_XDP] &&
2383            !mlx4_en_check_xdp_mtu(dev, new_mtu))
2384                return -EOPNOTSUPP;
2385
2386        dev->mtu = new_mtu;
2387
2388        if (netif_running(dev)) {
2389                mutex_lock(&mdev->state_lock);
2390                if (!mdev->device_up) {
2391                        /* NIC is probably restarting - let watchdog task reset
2392                         * the port */
2393                        en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2394                } else {
2395                        mlx4_en_stop_port(dev, 1);
2396                        err = mlx4_en_start_port(dev);
2397                        if (err) {
2398                                en_err(priv, "Failed restarting port:%d\n",
2399                                         priv->port);
2400                                queue_work(mdev->workqueue, &priv->watchdog_task);
2401                        }
2402                }
2403                mutex_unlock(&mdev->state_lock);
2404        }
2405        return 0;
2406}
2407
2408static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2409{
2410        struct mlx4_en_priv *priv = netdev_priv(dev);
2411        struct mlx4_en_dev *mdev = priv->mdev;
2412        struct hwtstamp_config config;
2413
2414        if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2415                return -EFAULT;
2416
2417        /* reserved for future extensions */
2418        if (config.flags)
2419                return -EINVAL;
2420
2421        /* device doesn't support time stamping */
2422        if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2423                return -EINVAL;
2424
2425        /* TX HW timestamp */
2426        switch (config.tx_type) {
2427        case HWTSTAMP_TX_OFF:
2428        case HWTSTAMP_TX_ON:
2429                break;
2430        default:
2431                return -ERANGE;
2432        }
2433
2434        /* RX HW timestamp */
2435        switch (config.rx_filter) {
2436        case HWTSTAMP_FILTER_NONE:
2437                break;
2438        case HWTSTAMP_FILTER_ALL:
2439        case HWTSTAMP_FILTER_SOME:
2440        case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2441        case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2442        case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2443        case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2444        case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2445        case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2446        case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2447        case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2448        case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2449        case HWTSTAMP_FILTER_PTP_V2_EVENT:
2450        case HWTSTAMP_FILTER_PTP_V2_SYNC:
2451        case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2452        case HWTSTAMP_FILTER_NTP_ALL:
2453                config.rx_filter = HWTSTAMP_FILTER_ALL;
2454                break;
2455        default:
2456                return -ERANGE;
2457        }
2458
2459        if (mlx4_en_reset_config(dev, config, dev->features)) {
2460                config.tx_type = HWTSTAMP_TX_OFF;
2461                config.rx_filter = HWTSTAMP_FILTER_NONE;
2462        }
2463
2464        return copy_to_user(ifr->ifr_data, &config,
2465                            sizeof(config)) ? -EFAULT : 0;
2466}
2467
2468static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2469{
2470        struct mlx4_en_priv *priv = netdev_priv(dev);
2471
2472        return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2473                            sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2474}
2475
2476static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2477{
2478        switch (cmd) {
2479        case SIOCSHWTSTAMP:
2480                return mlx4_en_hwtstamp_set(dev, ifr);
2481        case SIOCGHWTSTAMP:
2482                return mlx4_en_hwtstamp_get(dev, ifr);
2483        default:
2484                return -EOPNOTSUPP;
2485        }
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 void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2643{
2644        int ret;
2645        struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2646                                                 vxlan_add_task);
2647
2648        ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2649        if (ret)
2650                goto out;
2651
2652        ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2653                                  VXLAN_STEER_BY_OUTER_MAC, 1);
2654out:
2655        if (ret) {
2656                en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2657                return;
2658        }
2659
2660        /* set offloads */
2661        priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2662                                      NETIF_F_RXCSUM |
2663                                      NETIF_F_TSO | NETIF_F_TSO6 |
2664                                      NETIF_F_GSO_UDP_TUNNEL |
2665                                      NETIF_F_GSO_UDP_TUNNEL_CSUM |
2666                                      NETIF_F_GSO_PARTIAL;
2667}
2668
2669static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2670{
2671        int ret;
2672        struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2673                                                 vxlan_del_task);
2674        /* unset offloads */
2675        priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2676                                        NETIF_F_RXCSUM |
2677                                        NETIF_F_TSO | NETIF_F_TSO6 |
2678                                        NETIF_F_GSO_UDP_TUNNEL |
2679                                        NETIF_F_GSO_UDP_TUNNEL_CSUM |
2680                                        NETIF_F_GSO_PARTIAL);
2681
2682        ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2683                                  VXLAN_STEER_BY_OUTER_MAC, 0);
2684        if (ret)
2685                en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2686
2687        priv->vxlan_port = 0;
2688}
2689
2690static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2691                                   struct udp_tunnel_info *ti)
2692{
2693        struct mlx4_en_priv *priv = netdev_priv(dev);
2694        __be16 port = ti->port;
2695        __be16 current_port;
2696
2697        if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2698                return;
2699
2700        if (ti->sa_family != AF_INET)
2701                return;
2702
2703        if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2704                return;
2705
2706        current_port = priv->vxlan_port;
2707        if (current_port && current_port != port) {
2708                en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2709                        ntohs(current_port), ntohs(port));
2710                return;
2711        }
2712
2713        priv->vxlan_port = port;
2714        queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2715}
2716
2717static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2718                                   struct udp_tunnel_info *ti)
2719{
2720        struct mlx4_en_priv *priv = netdev_priv(dev);
2721        __be16 port = ti->port;
2722        __be16 current_port;
2723
2724        if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2725                return;
2726
2727        if (ti->sa_family != AF_INET)
2728                return;
2729
2730        if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2731                return;
2732
2733        current_port = priv->vxlan_port;
2734        if (current_port != port) {
2735                en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2736                return;
2737        }
2738
2739        queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2740}
2741
2742static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2743                                                struct net_device *dev,
2744                                                netdev_features_t features)
2745{
2746        features = vlan_features_check(skb, features);
2747        features = vxlan_features_check(skb, features);
2748
2749        /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2750         * support inner IPv6 checksums and segmentation so  we need to
2751         * strip that feature if this is an IPv6 encapsulated frame.
2752         */
2753        if (skb->encapsulation &&
2754            (skb->ip_summed == CHECKSUM_PARTIAL)) {
2755                struct mlx4_en_priv *priv = netdev_priv(dev);
2756
2757                if (!priv->vxlan_port ||
2758                    (ip_hdr(skb)->version != 4) ||
2759                    (udp_hdr(skb)->dest != priv->vxlan_port))
2760                        features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2761        }
2762
2763        return features;
2764}
2765
2766static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2767{
2768        struct mlx4_en_priv *priv = netdev_priv(dev);
2769        struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2770        struct mlx4_update_qp_params params;
2771        int err;
2772
2773        if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2774                return -EOPNOTSUPP;
2775
2776        /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2777        if (maxrate >> 12) {
2778                params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2779                params.rate_val  = maxrate / 1000;
2780        } else if (maxrate) {
2781                params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2782                params.rate_val  = maxrate;
2783        } else { /* zero serves to revoke the QP rate-limitation */
2784                params.rate_unit = 0;
2785                params.rate_val  = 0;
2786        }
2787
2788        err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2789                             &params);
2790        return err;
2791}
2792
2793static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2794{
2795        struct mlx4_en_priv *priv = netdev_priv(dev);
2796        struct mlx4_en_dev *mdev = priv->mdev;
2797        struct mlx4_en_port_profile new_prof;
2798        struct bpf_prog *old_prog;
2799        struct mlx4_en_priv *tmp;
2800        int tx_changed = 0;
2801        int xdp_ring_num;
2802        int port_up = 0;
2803        int err;
2804        int i;
2805
2806        xdp_ring_num = prog ? priv->rx_ring_num : 0;
2807
2808        /* No need to reconfigure buffers when simply swapping the
2809         * program for a new one.
2810         */
2811        if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2812                if (prog) {
2813                        prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2814                        if (IS_ERR(prog))
2815                                return PTR_ERR(prog);
2816                }
2817                mutex_lock(&mdev->state_lock);
2818                for (i = 0; i < priv->rx_ring_num; i++) {
2819                        old_prog = rcu_dereference_protected(
2820                                        priv->rx_ring[i]->xdp_prog,
2821                                        lockdep_is_held(&mdev->state_lock));
2822                        rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2823                        if (old_prog)
2824                                bpf_prog_put(old_prog);
2825                }
2826                mutex_unlock(&mdev->state_lock);
2827                return 0;
2828        }
2829
2830        if (!mlx4_en_check_xdp_mtu(dev, dev->mtu))
2831                return -EOPNOTSUPP;
2832
2833        tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
2834        if (!tmp)
2835                return -ENOMEM;
2836
2837        if (prog) {
2838                prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2839                if (IS_ERR(prog)) {
2840                        err = PTR_ERR(prog);
2841                        goto out;
2842                }
2843        }
2844
2845        mutex_lock(&mdev->state_lock);
2846        memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2847        new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2848
2849        if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2850                tx_changed = 1;
2851                new_prof.tx_ring_num[TX] =
2852                        MAX_TX_RINGS - ALIGN(xdp_ring_num, priv->prof->num_up);
2853                en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2854        }
2855
2856        err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, false);
2857        if (err) {
2858                if (prog)
2859                        bpf_prog_sub(prog, priv->rx_ring_num - 1);
2860                goto unlock_out;
2861        }
2862
2863        if (priv->port_up) {
2864                port_up = 1;
2865                mlx4_en_stop_port(dev, 1);
2866        }
2867
2868        mlx4_en_safe_replace_resources(priv, tmp);
2869        if (tx_changed)
2870                netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
2871
2872        for (i = 0; i < priv->rx_ring_num; i++) {
2873                old_prog = rcu_dereference_protected(
2874                                        priv->rx_ring[i]->xdp_prog,
2875                                        lockdep_is_held(&mdev->state_lock));
2876                rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2877                if (old_prog)
2878                        bpf_prog_put(old_prog);
2879        }
2880
2881        if (port_up) {
2882                err = mlx4_en_start_port(dev);
2883                if (err) {
2884                        en_err(priv, "Failed starting port %d for XDP change\n",
2885                               priv->port);
2886                        queue_work(mdev->workqueue, &priv->watchdog_task);
2887                }
2888        }
2889
2890unlock_out:
2891        mutex_unlock(&mdev->state_lock);
2892out:
2893        kfree(tmp);
2894        return err;
2895}
2896
2897static u32 mlx4_xdp_query(struct net_device *dev)
2898{
2899        struct mlx4_en_priv *priv = netdev_priv(dev);
2900        struct mlx4_en_dev *mdev = priv->mdev;
2901        const struct bpf_prog *xdp_prog;
2902        u32 prog_id = 0;
2903
2904        if (!priv->tx_ring_num[TX_XDP])
2905                return prog_id;
2906
2907        mutex_lock(&mdev->state_lock);
2908        xdp_prog = rcu_dereference_protected(
2909                priv->rx_ring[0]->xdp_prog,
2910                lockdep_is_held(&mdev->state_lock));
2911        if (xdp_prog)
2912                prog_id = xdp_prog->aux->id;
2913        mutex_unlock(&mdev->state_lock);
2914
2915        return prog_id;
2916}
2917
2918static int mlx4_xdp(struct net_device *dev, struct netdev_xdp *xdp)
2919{
2920        switch (xdp->command) {
2921        case XDP_SETUP_PROG:
2922                return mlx4_xdp_set(dev, xdp->prog);
2923        case XDP_QUERY_PROG:
2924                xdp->prog_id = mlx4_xdp_query(dev);
2925                xdp->prog_attached = !!xdp->prog_id;
2926                return 0;
2927        default:
2928                return -EINVAL;
2929        }
2930}
2931
2932static const struct net_device_ops mlx4_netdev_ops = {
2933        .ndo_open               = mlx4_en_open,
2934        .ndo_stop               = mlx4_en_close,
2935        .ndo_start_xmit         = mlx4_en_xmit,
2936        .ndo_select_queue       = mlx4_en_select_queue,
2937        .ndo_get_stats64        = mlx4_en_get_stats64,
2938        .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2939        .ndo_set_mac_address    = mlx4_en_set_mac,
2940        .ndo_validate_addr      = eth_validate_addr,
2941        .ndo_change_mtu         = mlx4_en_change_mtu,
2942        .ndo_do_ioctl           = mlx4_en_ioctl,
2943        .ndo_tx_timeout         = mlx4_en_tx_timeout,
2944        .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2945        .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2946#ifdef CONFIG_NET_POLL_CONTROLLER
2947        .ndo_poll_controller    = mlx4_en_netpoll,
2948#endif
2949        .ndo_set_features       = mlx4_en_set_features,
2950        .ndo_fix_features       = mlx4_en_fix_features,
2951        .ndo_setup_tc           = __mlx4_en_setup_tc,
2952#ifdef CONFIG_RFS_ACCEL
2953        .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2954#endif
2955        .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2956        .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2957        .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2958        .ndo_features_check     = mlx4_en_features_check,
2959        .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2960        .ndo_xdp                = mlx4_xdp,
2961};
2962
2963static const struct net_device_ops mlx4_netdev_ops_master = {
2964        .ndo_open               = mlx4_en_open,
2965        .ndo_stop               = mlx4_en_close,
2966        .ndo_start_xmit         = mlx4_en_xmit,
2967        .ndo_select_queue       = mlx4_en_select_queue,
2968        .ndo_get_stats64        = mlx4_en_get_stats64,
2969        .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2970        .ndo_set_mac_address    = mlx4_en_set_mac,
2971        .ndo_validate_addr      = eth_validate_addr,
2972        .ndo_change_mtu         = mlx4_en_change_mtu,
2973        .ndo_tx_timeout         = mlx4_en_tx_timeout,
2974        .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2975        .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2976        .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2977        .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2978        .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2979        .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2980        .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2981        .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2982        .ndo_get_vf_config      = mlx4_en_get_vf_config,
2983#ifdef CONFIG_NET_POLL_CONTROLLER
2984        .ndo_poll_controller    = mlx4_en_netpoll,
2985#endif
2986        .ndo_set_features       = mlx4_en_set_features,
2987        .ndo_fix_features       = mlx4_en_fix_features,
2988        .ndo_setup_tc           = __mlx4_en_setup_tc,
2989#ifdef CONFIG_RFS_ACCEL
2990        .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2991#endif
2992        .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2993        .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2994        .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2995        .ndo_features_check     = mlx4_en_features_check,
2996        .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2997        .ndo_xdp                = mlx4_xdp,
2998};
2999
3000struct mlx4_en_bond {
3001        struct work_struct work;
3002        struct mlx4_en_priv *priv;
3003        int is_bonded;
3004        struct mlx4_port_map port_map;
3005};
3006
3007static void mlx4_en_bond_work(struct work_struct *work)
3008{
3009        struct mlx4_en_bond *bond = container_of(work,
3010                                                     struct mlx4_en_bond,
3011                                                     work);
3012        int err = 0;
3013        struct mlx4_dev *dev = bond->priv->mdev->dev;
3014
3015        if (bond->is_bonded) {
3016                if (!mlx4_is_bonded(dev)) {
3017                        err = mlx4_bond(dev);
3018                        if (err)
3019                                en_err(bond->priv, "Fail to bond device\n");
3020                }
3021                if (!err) {
3022                        err = mlx4_port_map_set(dev, &bond->port_map);
3023                        if (err)
3024                                en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
3025                                       bond->port_map.port1,
3026                                       bond->port_map.port2,
3027                                       err);
3028                }
3029        } else if (mlx4_is_bonded(dev)) {
3030                err = mlx4_unbond(dev);
3031                if (err)
3032                        en_err(bond->priv, "Fail to unbond device\n");
3033        }
3034        dev_put(bond->priv->dev);
3035        kfree(bond);
3036}
3037
3038static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
3039                                   u8 v2p_p1, u8 v2p_p2)
3040{
3041        struct mlx4_en_bond *bond = NULL;
3042
3043        bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
3044        if (!bond)
3045                return -ENOMEM;
3046
3047        INIT_WORK(&bond->work, mlx4_en_bond_work);
3048        bond->priv = priv;
3049        bond->is_bonded = is_bonded;
3050        bond->port_map.port1 = v2p_p1;
3051        bond->port_map.port2 = v2p_p2;
3052        dev_hold(priv->dev);
3053        queue_work(priv->mdev->workqueue, &bond->work);
3054        return 0;
3055}
3056
3057int mlx4_en_netdev_event(struct notifier_block *this,
3058                         unsigned long event, void *ptr)
3059{
3060        struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
3061        u8 port = 0;
3062        struct mlx4_en_dev *mdev;
3063        struct mlx4_dev *dev;
3064        int i, num_eth_ports = 0;
3065        bool do_bond = true;
3066        struct mlx4_en_priv *priv;
3067        u8 v2p_port1 = 0;
3068        u8 v2p_port2 = 0;
3069
3070        if (!net_eq(dev_net(ndev), &init_net))
3071                return NOTIFY_DONE;
3072
3073        mdev = container_of(this, struct mlx4_en_dev, nb);
3074        dev = mdev->dev;
3075
3076        /* Go into this mode only when two network devices set on two ports
3077         * of the same mlx4 device are slaves of the same bonding master
3078         */
3079        mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
3080                ++num_eth_ports;
3081                if (!port && (mdev->pndev[i] == ndev))
3082                        port = i;
3083                mdev->upper[i] = mdev->pndev[i] ?
3084                        netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
3085                /* condition not met: network device is a slave */
3086                if (!mdev->upper[i])
3087                        do_bond = false;
3088                if (num_eth_ports < 2)
3089                        continue;
3090                /* condition not met: same master */
3091                if (mdev->upper[i] != mdev->upper[i-1])
3092                        do_bond = false;
3093        }
3094        /* condition not met: 2 salves */
3095        do_bond = (num_eth_ports ==  2) ? do_bond : false;
3096
3097        /* handle only events that come with enough info */
3098        if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
3099                return NOTIFY_DONE;
3100
3101        priv = netdev_priv(ndev);
3102        if (do_bond) {
3103                struct netdev_notifier_bonding_info *notifier_info = ptr;
3104                struct netdev_bonding_info *bonding_info =
3105                        &notifier_info->bonding_info;
3106
3107                /* required mode 1, 2 or 4 */
3108                if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
3109                    (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
3110                    (bonding_info->master.bond_mode != BOND_MODE_8023AD))
3111                        do_bond = false;
3112
3113                /* require exactly 2 slaves */
3114                if (bonding_info->master.num_slaves != 2)
3115                        do_bond = false;
3116
3117                /* calc v2p */
3118                if (do_bond) {
3119                        if (bonding_info->master.bond_mode ==
3120                            BOND_MODE_ACTIVEBACKUP) {
3121                                /* in active-backup mode virtual ports are
3122                                 * mapped to the physical port of the active
3123                                 * slave */
3124                                if (bonding_info->slave.state ==
3125                                    BOND_STATE_BACKUP) {
3126                                        if (port == 1) {
3127                                                v2p_port1 = 2;
3128                                                v2p_port2 = 2;
3129                                        } else {
3130                                                v2p_port1 = 1;
3131                                                v2p_port2 = 1;
3132                                        }
3133                                } else { /* BOND_STATE_ACTIVE */
3134                                        if (port == 1) {
3135                                                v2p_port1 = 1;
3136                                                v2p_port2 = 1;
3137                                        } else {
3138                                                v2p_port1 = 2;
3139                                                v2p_port2 = 2;
3140                                        }
3141                                }
3142                        } else { /* Active-Active */
3143                                /* in active-active mode a virtual port is
3144                                 * mapped to the native physical port if and only
3145                                 * if the physical port is up */
3146                                __s8 link = bonding_info->slave.link;
3147
3148                                if (port == 1)
3149                                        v2p_port2 = 2;
3150                                else
3151                                        v2p_port1 = 1;
3152                                if ((link == BOND_LINK_UP) ||
3153                                    (link == BOND_LINK_FAIL)) {
3154                                        if (port == 1)
3155                                                v2p_port1 = 1;
3156                                        else
3157                                                v2p_port2 = 2;
3158                                } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
3159                                        if (port == 1)
3160                                                v2p_port1 = 2;
3161                                        else
3162                                                v2p_port2 = 1;
3163                                }
3164                        }
3165                }
3166        }
3167
3168        mlx4_en_queue_bond_work(priv, do_bond,
3169                                v2p_port1, v2p_port2);
3170
3171        return NOTIFY_DONE;
3172}
3173
3174void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3175                                     struct mlx4_en_stats_bitmap *stats_bitmap,
3176                                     u8 rx_ppp, u8 rx_pause,
3177                                     u8 tx_ppp, u8 tx_pause)
3178{
3179        int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3180
3181        if (!mlx4_is_slave(dev) &&
3182            (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3183                mutex_lock(&stats_bitmap->mutex);
3184                bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
3185
3186                if (rx_ppp)
3187                        bitmap_set(stats_bitmap->bitmap, last_i,
3188                                   NUM_FLOW_PRIORITY_STATS_RX);
3189                last_i += NUM_FLOW_PRIORITY_STATS_RX;
3190
3191                if (rx_pause && !(rx_ppp))
3192                        bitmap_set(stats_bitmap->bitmap, last_i,
3193                                   NUM_FLOW_STATS_RX);
3194                last_i += NUM_FLOW_STATS_RX;
3195
3196                if (tx_ppp)
3197                        bitmap_set(stats_bitmap->bitmap, last_i,
3198                                   NUM_FLOW_PRIORITY_STATS_TX);
3199                last_i += NUM_FLOW_PRIORITY_STATS_TX;
3200
3201                if (tx_pause && !(tx_ppp))
3202                        bitmap_set(stats_bitmap->bitmap, last_i,
3203                                   NUM_FLOW_STATS_TX);
3204                last_i += NUM_FLOW_STATS_TX;
3205
3206                mutex_unlock(&stats_bitmap->mutex);
3207        }
3208}
3209
3210void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3211                              struct mlx4_en_stats_bitmap *stats_bitmap,
3212                              u8 rx_ppp, u8 rx_pause,
3213                              u8 tx_ppp, u8 tx_pause)
3214{
3215        int last_i = 0;
3216
3217        mutex_init(&stats_bitmap->mutex);
3218        bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3219
3220        if (mlx4_is_slave(dev)) {
3221                bitmap_set(stats_bitmap->bitmap, last_i +
3222                                         MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3223                bitmap_set(stats_bitmap->bitmap, last_i +
3224                                         MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3225                bitmap_set(stats_bitmap->bitmap, last_i +
3226                                         MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3227                bitmap_set(stats_bitmap->bitmap, last_i +
3228                                         MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3229                bitmap_set(stats_bitmap->bitmap, last_i +
3230                                         MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3231                bitmap_set(stats_bitmap->bitmap, last_i +
3232                                         MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3233        } else {
3234                bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3235        }
3236        last_i += NUM_MAIN_STATS;
3237
3238        bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3239        last_i += NUM_PORT_STATS;
3240
3241        if (mlx4_is_master(dev))
3242                bitmap_set(stats_bitmap->bitmap, last_i,
3243                           NUM_PF_STATS);
3244        last_i += NUM_PF_STATS;
3245
3246        mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3247                                        rx_ppp, rx_pause,
3248                                        tx_ppp, tx_pause);
3249        last_i += NUM_FLOW_STATS;
3250
3251        if (!mlx4_is_slave(dev))
3252                bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3253        last_i += NUM_PKT_STATS;
3254
3255        bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS);
3256        last_i += NUM_XDP_STATS;
3257}
3258
3259int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3260                        struct mlx4_en_port_profile *prof)
3261{
3262        struct net_device *dev;
3263        struct mlx4_en_priv *priv;
3264        int i, t;
3265        int err;
3266
3267        dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3268                                 MAX_TX_RINGS, MAX_RX_RINGS);
3269        if (dev == NULL)
3270                return -ENOMEM;
3271
3272        netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]);
3273        netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3274
3275        SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3276        dev->dev_port = port - 1;
3277
3278        /*
3279         * Initialize driver private data
3280         */
3281
3282        priv = netdev_priv(dev);
3283        memset(priv, 0, sizeof(struct mlx4_en_priv));
3284        priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3285        spin_lock_init(&priv->stats_lock);
3286        INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3287        INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
3288        INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
3289        INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3290        INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3291        INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
3292        INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
3293#ifdef CONFIG_RFS_ACCEL
3294        INIT_LIST_HEAD(&priv->filters);
3295        spin_lock_init(&priv->filters_lock);
3296#endif
3297
3298        priv->dev = dev;
3299        priv->mdev = mdev;
3300        priv->ddev = &mdev->pdev->dev;
3301        priv->prof = prof;
3302        priv->port = port;
3303        priv->port_up = false;
3304        priv->flags = prof->flags;
3305        priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3306        priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3307                        MLX4_WQE_CTRL_SOLICITED);
3308        priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
3309        priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3310        netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3311
3312        for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3313                priv->tx_ring_num[t] = prof->tx_ring_num[t];
3314                if (!priv->tx_ring_num[t])
3315                        continue;
3316
3317                priv->tx_ring[t] = kzalloc(sizeof(struct mlx4_en_tx_ring *) *
3318                                           MAX_TX_RINGS, GFP_KERNEL);
3319                if (!priv->tx_ring[t]) {
3320                        err = -ENOMEM;
3321                        goto err_free_tx;
3322                }
3323                priv->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) *
3324                                         MAX_TX_RINGS, GFP_KERNEL);
3325                if (!priv->tx_cq[t]) {
3326                        kfree(priv->tx_ring[t]);
3327                        err = -ENOMEM;
3328                        goto out;
3329                }
3330        }
3331        priv->rx_ring_num = prof->rx_ring_num;
3332        priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3333        priv->cqe_size = mdev->dev->caps.cqe_size;
3334        priv->mac_index = -1;
3335        priv->msg_enable = MLX4_EN_MSG_LEVEL;
3336#ifdef CONFIG_MLX4_EN_DCB
3337        if (!mlx4_is_slave(priv->mdev->dev)) {
3338                priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3339                        DCB_CAP_DCBX_VER_IEEE;
3340                priv->flags |= MLX4_EN_DCB_ENABLED;
3341                priv->cee_config.pfc_state = false;
3342
3343                for (i = 0; i < MLX4_EN_NUM_UP_HIGH; i++)
3344                        priv->cee_config.dcb_pfc[i] = pfc_disabled;
3345
3346                if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3347                        dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3348                } else {
3349                        en_info(priv, "enabling only PFC DCB ops\n");
3350                        dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3351                }
3352        }
3353#endif
3354
3355        for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3356                INIT_HLIST_HEAD(&priv->mac_hash[i]);
3357
3358        /* Query for default mac and max mtu */
3359        priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3360
3361        if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3362            MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3363                priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3364
3365        /* Set default MAC */
3366        dev->addr_len = ETH_ALEN;
3367        mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
3368        if (!is_valid_ether_addr(dev->dev_addr)) {
3369                en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
3370                       priv->port, dev->dev_addr);
3371                err = -EINVAL;
3372                goto out;
3373        } else if (mlx4_is_slave(priv->mdev->dev) &&
3374                   (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3375                /* Random MAC was assigned in mlx4_slave_cap
3376                 * in mlx4_core module
3377                 */
3378                dev->addr_assign_type |= NET_ADDR_RANDOM;
3379                en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3380        }
3381
3382        memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3383
3384        priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3385                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3386        err = mlx4_en_alloc_resources(priv);
3387        if (err)
3388                goto out;
3389
3390        /* Initialize time stamping config */
3391        priv->hwtstamp_config.flags = 0;
3392        priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3393        priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3394
3395        /* Allocate page for receive rings */
3396        err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3397                                MLX4_EN_PAGE_SIZE);
3398        if (err) {
3399                en_err(priv, "Failed to allocate page for rx qps\n");
3400                goto out;
3401        }
3402        priv->allocated = 1;
3403
3404        /*
3405         * Initialize netdev entry points
3406         */
3407        if (mlx4_is_master(priv->mdev->dev))
3408                dev->netdev_ops = &mlx4_netdev_ops_master;
3409        else
3410                dev->netdev_ops = &mlx4_netdev_ops;
3411        dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3412        netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
3413        netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3414
3415        dev->ethtool_ops = &mlx4_en_ethtool_ops;
3416
3417        /*
3418         * Set driver features
3419         */
3420        dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3421        if (mdev->LSO_support)
3422                dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3423
3424        dev->vlan_features = dev->hw_features;
3425
3426        dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3427        dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3428                        NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3429                        NETIF_F_HW_VLAN_CTAG_FILTER;
3430        dev->hw_features |= NETIF_F_LOOPBACK |
3431                        NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3432
3433        if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3434                dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3435                        NETIF_F_HW_VLAN_STAG_FILTER;
3436                dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3437        }
3438
3439        if (mlx4_is_slave(mdev->dev)) {
3440                bool vlan_offload_disabled;
3441                int phv;
3442
3443                err = get_phv_bit(mdev->dev, port, &phv);
3444                if (!err && phv) {
3445                        dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3446                        priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3447                }
3448                err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port,
3449                                                        &vlan_offload_disabled);
3450                if (!err && vlan_offload_disabled) {
3451                        dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3452                                              NETIF_F_HW_VLAN_CTAG_RX |
3453                                              NETIF_F_HW_VLAN_STAG_TX |
3454                                              NETIF_F_HW_VLAN_STAG_RX);
3455                        dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3456                                           NETIF_F_HW_VLAN_CTAG_RX |
3457                                           NETIF_F_HW_VLAN_STAG_TX |
3458                                           NETIF_F_HW_VLAN_STAG_RX);
3459                }
3460        } else {
3461                if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3462                    !(mdev->dev->caps.flags2 &
3463                      MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3464                        dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3465        }
3466
3467        if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3468                dev->hw_features |= NETIF_F_RXFCS;
3469
3470        if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3471                dev->hw_features |= NETIF_F_RXALL;
3472
3473        if (mdev->dev->caps.steering_mode ==
3474            MLX4_STEERING_MODE_DEVICE_MANAGED &&
3475            mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3476                dev->hw_features |= NETIF_F_NTUPLE;
3477
3478        if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3479                dev->priv_flags |= IFF_UNICAST_FLT;
3480
3481        /* Setting a default hash function value */
3482        if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3483                priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3484        } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3485                priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3486        } else {
3487                en_warn(priv,
3488                        "No RSS hash capabilities exposed, using Toeplitz\n");
3489                priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3490        }
3491
3492        if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3493                dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3494                                    NETIF_F_GSO_UDP_TUNNEL_CSUM |
3495                                    NETIF_F_GSO_PARTIAL;
3496                dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3497                                    NETIF_F_GSO_UDP_TUNNEL_CSUM |
3498                                    NETIF_F_GSO_PARTIAL;
3499                dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3500        }
3501
3502        /* MTU range: 46 - hw-specific max */
3503        dev->min_mtu = MLX4_EN_MIN_MTU;
3504        dev->max_mtu = priv->max_mtu;
3505
3506        mdev->pndev[port] = dev;
3507        mdev->upper[port] = NULL;
3508
3509        netif_carrier_off(dev);
3510        mlx4_en_set_default_moderation(priv);
3511
3512        en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3513        en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3514
3515        mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3516
3517        /* Configure port */
3518        mlx4_en_calc_rx_buf(dev);
3519        err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3520                                    priv->rx_skb_size + ETH_FCS_LEN,
3521                                    prof->tx_pause, prof->tx_ppp,
3522                                    prof->rx_pause, prof->rx_ppp);
3523        if (err) {
3524                en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3525                       priv->port, err);
3526                goto out;
3527        }
3528
3529        if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3530                err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3531                if (err) {
3532                        en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3533                               err);
3534                        goto out;
3535                }
3536        }
3537
3538        /* Init port */
3539        en_warn(priv, "Initializing port\n");
3540        err = mlx4_INIT_PORT(mdev->dev, priv->port);
3541        if (err) {
3542                en_err(priv, "Failed Initializing port\n");
3543                goto out;
3544        }
3545        queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3546
3547        /* Initialize time stamp mechanism */
3548        if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3549                mlx4_en_init_timestamp(mdev);
3550
3551        queue_delayed_work(mdev->workqueue, &priv->service_task,
3552                           SERVICE_TASK_DELAY);
3553
3554        mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3555                                 mdev->profile.prof[priv->port].rx_ppp,
3556                                 mdev->profile.prof[priv->port].rx_pause,
3557                                 mdev->profile.prof[priv->port].tx_ppp,
3558                                 mdev->profile.prof[priv->port].tx_pause);
3559
3560        err = register_netdev(dev);
3561        if (err) {
3562                en_err(priv, "Netdev registration failed for port %d\n", port);
3563                goto out;
3564        }
3565
3566        priv->registered = 1;
3567        devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3568                                  dev);
3569
3570        return 0;
3571
3572err_free_tx:
3573        while (t--) {
3574                kfree(priv->tx_ring[t]);
3575                kfree(priv->tx_cq[t]);
3576        }
3577out:
3578        mlx4_en_destroy_netdev(dev);
3579        return err;
3580}
3581
3582int mlx4_en_reset_config(struct net_device *dev,
3583                         struct hwtstamp_config ts_config,
3584                         netdev_features_t features)
3585{
3586        struct mlx4_en_priv *priv = netdev_priv(dev);
3587        struct mlx4_en_dev *mdev = priv->mdev;
3588        struct mlx4_en_port_profile new_prof;
3589        struct mlx4_en_priv *tmp;
3590        int port_up = 0;
3591        int err = 0;
3592
3593        if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3594            priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3595            !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3596            !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3597                return 0; /* Nothing to change */
3598
3599        if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3600            (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3601            (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3602                en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3603                return -EINVAL;
3604        }
3605
3606        tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3607        if (!tmp)
3608                return -ENOMEM;
3609
3610        mutex_lock(&mdev->state_lock);
3611
3612        memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3613        memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3614
3615        err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
3616        if (err)
3617                goto out;
3618
3619        if (priv->port_up) {
3620                port_up = 1;
3621                mlx4_en_stop_port(dev, 1);
3622        }
3623
3624        en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3625                ts_config.rx_filter,
3626                !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3627
3628        mlx4_en_safe_replace_resources(priv, tmp);
3629
3630        if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3631                if (features & NETIF_F_HW_VLAN_CTAG_RX)
3632                        dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3633                else
3634                        dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3635        } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3636                /* RX time-stamping is OFF, update the RX vlan offload
3637                 * to the latest wanted state
3638                 */
3639                if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3640                        dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3641                else
3642                        dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3643        }
3644
3645        if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3646                if (features & NETIF_F_RXFCS)
3647                        dev->features |= NETIF_F_RXFCS;
3648                else
3649                        dev->features &= ~NETIF_F_RXFCS;
3650        }
3651
3652        /* RX vlan offload and RX time-stamping can't co-exist !
3653         * Regardless of the caller's choice,
3654         * Turn Off RX vlan offload in case of time-stamping is ON
3655         */
3656        if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3657                if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3658                        en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3659                dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3660        }
3661
3662        if (port_up) {
3663                err = mlx4_en_start_port(dev);
3664                if (err)
3665                        en_err(priv, "Failed starting port\n");
3666        }
3667
3668out:
3669        mutex_unlock(&mdev->state_lock);
3670        kfree(tmp);
3671        if (!err)
3672                netdev_features_change(dev);
3673        return err;
3674}
3675