drivers/net/ethernet/qlogic/qede/qede_filter.c

   1 /* QLogic qede NIC Driver
   2  * Copyright (c) 2015-2017  QLogic Corporation
   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 #include <linux/netdevice.h>
  33 #include <linux/etherdevice.h>
  34 #include <net/udp_tunnel.h>
  35 #include <linux/bitops.h>
  36 #include <linux/vmalloc.h>
  37
  38 #include <linux/qed/qed_if.h>
  39 #include "qede.h"
  40
  41 #ifdef CONFIG_RFS_ACCEL
  42 struct qede_arfs_tuple {
  43         union {
  44                 __be32 src_ipv4;
  45                 struct in6_addr src_ipv6;
  46         };
  47         union {
  48                 __be32 dst_ipv4;
  49                 struct in6_addr dst_ipv6;
  50         };
  51         __be16  src_port;
  52         __be16  dst_port;
  53         __be16  eth_proto;
  54         u8      ip_proto;
  55 };
  56
  57 struct qede_arfs_fltr_node {
  58 #define QEDE_FLTR_VALID  0
  59         unsigned long state;
  60
  61         /* pointer to aRFS packet buffer */
  62         void *data;
  63
  64         /* dma map address of aRFS packet buffer */
  65         dma_addr_t mapping;
  66
  67         /* length of aRFS packet buffer */
  68         int buf_len;
  69
  70         /* tuples to hold from aRFS packet buffer */
  71         struct qede_arfs_tuple tuple;
  72
  73         u32 flow_id;
  74         u16 sw_id;
  75         u16 rxq_id;
  76         u16 next_rxq_id;
  77         bool filter_op;
  78         bool used;
  79         struct hlist_node node;
  80 };
  81
  82 struct qede_arfs {
  83 #define QEDE_ARFS_POLL_COUNT    100
  84 #define QEDE_RFS_FLW_BITSHIFT   (4)
  85 #define QEDE_RFS_FLW_MASK       ((1 << QEDE_RFS_FLW_BITSHIFT) - 1)
  86         struct hlist_head       arfs_hl_head[1 << QEDE_RFS_FLW_BITSHIFT];
  87
  88         /* lock for filter list access */
  89         spinlock_t              arfs_list_lock;
  90         unsigned long           *arfs_fltr_bmap;
  91         int                     filter_count;
  92         bool                    enable;
  93 };
  94
  95 static void qede_configure_arfs_fltr(struct qede_dev *edev,
  96                                      struct qede_arfs_fltr_node *n,
  97                                      u16 rxq_id, bool add_fltr)
  98 {
  99         const struct qed_eth_ops *op = edev->ops;
 100
 101         if (n->used)
 102                 return;
 103
 104         DP_VERBOSE(edev, NETIF_MSG_RX_STATUS,
 105                    "%s arfs filter flow_id=%d, sw_id=%d, src_port=%d, dst_port=%d, rxq=%d\n",
 106                    add_fltr ? "Adding" : "Deleting",
 107                    n->flow_id, n->sw_id, ntohs(n->tuple.src_port),
 108                    ntohs(n->tuple.dst_port), rxq_id);
 109
 110         n->used = true;
 111         n->filter_op = add_fltr;
 112         op->ntuple_filter_config(edev->cdev, n, n->mapping, n->buf_len, 0,
 113                                  rxq_id, add_fltr);
 114 }
 115
 116 static void
 117 qede_free_arfs_filter(struct qede_dev *edev,  struct qede_arfs_fltr_node *fltr)
 118 {
 119         kfree(fltr->data);
 120         clear_bit(fltr->sw_id, edev->arfs->arfs_fltr_bmap);
 121         kfree(fltr);
 122 }
 123
 124 void qede_arfs_filter_op(void *dev, void *filter, u8 fw_rc)
 125 {
 126         struct qede_arfs_fltr_node *fltr = filter;
 127         struct qede_dev *edev = dev;
 128
 129         if (fw_rc) {
 130                 DP_NOTICE(edev,
 131                           "Failed arfs filter configuration fw_rc=%d, flow_id=%d, sw_id=%d, src_port=%d, dst_port=%d, rxq=%d\n",
 132                           fw_rc, fltr->flow_id, fltr->sw_id,
 133                           ntohs(fltr->tuple.src_port),
 134                           ntohs(fltr->tuple.dst_port), fltr->rxq_id);
 135
 136                 spin_lock_bh(&edev->arfs->arfs_list_lock);
 137
 138                 fltr->used = false;
 139                 clear_bit(QEDE_FLTR_VALID, &fltr->state);
 140
 141                 spin_unlock_bh(&edev->arfs->arfs_list_lock);
 142                 return;
 143         }
 144
 145         spin_lock_bh(&edev->arfs->arfs_list_lock);
 146
 147         fltr->used = false;
 148
 149         if (fltr->filter_op) {
 150                 set_bit(QEDE_FLTR_VALID, &fltr->state);
 151                 if (fltr->rxq_id != fltr->next_rxq_id)
 152                         qede_configure_arfs_fltr(edev, fltr, fltr->rxq_id,
 153                                                  false);
 154         } else {
 155                 clear_bit(QEDE_FLTR_VALID, &fltr->state);
 156                 if (fltr->rxq_id != fltr->next_rxq_id) {
 157                         fltr->rxq_id = fltr->next_rxq_id;
 158                         qede_configure_arfs_fltr(edev, fltr,
 159                                                  fltr->rxq_id, true);
 160                 }
 161         }
 162
 163         spin_unlock_bh(&edev->arfs->arfs_list_lock);
 164 }
 165
 166 /* Should be called while qede_lock is held */
 167 void qede_process_arfs_filters(struct qede_dev *edev, bool free_fltr)
 168 {
 169         int i;
 170
 171         for (i = 0; i <= QEDE_RFS_FLW_MASK; i++) {
 172                 struct hlist_node *temp;
 173                 struct hlist_head *head;
 174                 struct qede_arfs_fltr_node *fltr;
 175
 176                 head = &edev->arfs->arfs_hl_head[i];
 177
 178                 hlist_for_each_entry_safe(fltr, temp, head, node) {
 179                         bool del = false;
 180
 181                         if (edev->state != QEDE_STATE_OPEN)
 182                                 del = true;
 183
 184                         spin_lock_bh(&edev->arfs->arfs_list_lock);
 185
 186                         if ((!test_bit(QEDE_FLTR_VALID, &fltr->state) &&
 187                              !fltr->used) || free_fltr) {
 188                                 hlist_del(&fltr->node);
 189                                 dma_unmap_single(&edev->pdev->dev,
 190                                                  fltr->mapping,
 191                                                  fltr->buf_len, DMA_TO_DEVICE);
 192                                 qede_free_arfs_filter(edev, fltr);
 193                                 edev->arfs->filter_count--;
 194                         } else {
 195                                 if ((rps_may_expire_flow(edev->ndev,
 196                                                          fltr->rxq_id,
 197                                                          fltr->flow_id,
 198                                                          fltr->sw_id) || del) &&
 199                                                          !free_fltr)
 200                                         qede_configure_arfs_fltr(edev, fltr,
 201                                                                  fltr->rxq_id,
 202                                                                  false);
 203                         }
 204
 205                         spin_unlock_bh(&edev->arfs->arfs_list_lock);
 206                 }
 207         }
 208
 209         spin_lock_bh(&edev->arfs->arfs_list_lock);
 210
 211         if (!edev->arfs->filter_count) {
 212                 if (edev->arfs->enable) {
 213                         edev->arfs->enable = false;
 214                         edev->ops->configure_arfs_searcher(edev->cdev, false);
 215                 }
 216         } else {
 217                 set_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags);
 218                 schedule_delayed_work(&edev->sp_task,
 219                                       QEDE_SP_TASK_POLL_DELAY);
 220         }
 221
 222         spin_unlock_bh(&edev->arfs->arfs_list_lock);
 223 }
 224
 225 /* This function waits until all aRFS filters get deleted and freed.
 226  * On timeout it frees all filters forcefully.
 227  */
 228 void qede_poll_for_freeing_arfs_filters(struct qede_dev *edev)
 229 {
 230         int count = QEDE_ARFS_POLL_COUNT;
 231
 232         while (count) {
 233                 qede_process_arfs_filters(edev, false);
 234
 235                 if (!edev->arfs->filter_count)
 236                         break;
 237
 238                 msleep(100);
 239                 count--;
 240         }
 241
 242         if (!count) {
 243                 DP_NOTICE(edev, "Timeout in polling for arfs filter free\n");
 244
 245                 /* Something is terribly wrong, free forcefully */
 246                 qede_process_arfs_filters(edev, true);
 247         }
 248 }
 249
 250 int qede_alloc_arfs(struct qede_dev *edev)
 251 {
 252         int i;
 253
 254         edev->arfs = vzalloc(sizeof(*edev->arfs));
 255         if (!edev->arfs)
 256                 return -ENOMEM;
 257
 258         spin_lock_init(&edev->arfs->arfs_list_lock);
 259
 260         for (i = 0; i <= QEDE_RFS_FLW_MASK; i++)
 261                 INIT_HLIST_HEAD(&edev->arfs->arfs_hl_head[i]);
 262
 263         edev->ndev->rx_cpu_rmap = alloc_irq_cpu_rmap(QEDE_RSS_COUNT(edev));
 264         if (!edev->ndev->rx_cpu_rmap) {
 265                 vfree(edev->arfs);
 266                 edev->arfs = NULL;
 267                 return -ENOMEM;
 268         }
 269
 270         edev->arfs->arfs_fltr_bmap = vzalloc(BITS_TO_LONGS(QEDE_RFS_MAX_FLTR));
 271         if (!edev->arfs->arfs_fltr_bmap) {
 272                 free_irq_cpu_rmap(edev->ndev->rx_cpu_rmap);
 273                 edev->ndev->rx_cpu_rmap = NULL;
 274                 vfree(edev->arfs);
 275                 edev->arfs = NULL;
 276                 return -ENOMEM;
 277         }
 278
 279         return 0;
 280 }
 281
 282 void qede_free_arfs(struct qede_dev *edev)
 283 {
 284         if (!edev->arfs)
 285                 return;
 286
 287         if (edev->ndev->rx_cpu_rmap)
 288                 free_irq_cpu_rmap(edev->ndev->rx_cpu_rmap);
 289
 290         edev->ndev->rx_cpu_rmap = NULL;
 291         vfree(edev->arfs->arfs_fltr_bmap);
 292         edev->arfs->arfs_fltr_bmap = NULL;
 293         vfree(edev->arfs);
 294         edev->arfs = NULL;
 295 }
 296
 297 static bool qede_compare_ip_addr(struct qede_arfs_fltr_node *tpos,
 298                                  const struct sk_buff *skb)
 299 {
 300         if (skb->protocol == htons(ETH_P_IP)) {
 301                 if (tpos->tuple.src_ipv4 == ip_hdr(skb)->saddr &&
 302                     tpos->tuple.dst_ipv4 == ip_hdr(skb)->daddr)
 303                         return true;
 304                 else
 305                         return false;
 306         } else {
 307                 struct in6_addr *src = &tpos->tuple.src_ipv6;
 308                 u8 size = sizeof(struct in6_addr);
 309
 310                 if (!memcmp(src, &ipv6_hdr(skb)->saddr, size) &&
 311                     !memcmp(&tpos->tuple.dst_ipv6, &ipv6_hdr(skb)->daddr, size))
 312                         return true;
 313                 else
 314                         return false;
 315         }
 316 }
 317
 318 static struct qede_arfs_fltr_node *
 319 qede_arfs_htbl_key_search(struct hlist_head *h, const struct sk_buff *skb,
 320                           __be16 src_port, __be16 dst_port, u8 ip_proto)
 321 {
 322         struct qede_arfs_fltr_node *tpos;
 323
 324         hlist_for_each_entry(tpos, h, node)
 325                 if (tpos->tuple.ip_proto == ip_proto &&
 326                     tpos->tuple.eth_proto == skb->protocol &&
 327                     qede_compare_ip_addr(tpos, skb) &&
 328                     tpos->tuple.src_port == src_port &&
 329                     tpos->tuple.dst_port == dst_port)
 330                         return tpos;
 331
 332         return NULL;
 333 }
 334
 335 static struct qede_arfs_fltr_node *
 336 qede_alloc_filter(struct qede_dev *edev, int min_hlen)
 337 {
 338         struct qede_arfs_fltr_node *n;
 339         int bit_id;
 340
 341         bit_id = find_first_zero_bit(edev->arfs->arfs_fltr_bmap,
 342                                      QEDE_RFS_MAX_FLTR);
 343
 344         if (bit_id >= QEDE_RFS_MAX_FLTR)
 345                 return NULL;
 346
 347         n = kzalloc(sizeof(*n), GFP_ATOMIC);
 348         if (!n)
 349                 return NULL;
 350
 351         n->data = kzalloc(min_hlen, GFP_ATOMIC);
 352         if (!n->data) {
 353                 kfree(n);
 354                 return NULL;
 355         }
 356
 357         n->sw_id = (u16)bit_id;
 358         set_bit(bit_id, edev->arfs->arfs_fltr_bmap);
 359         return n;
 360 }
 361
 362 int qede_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
 363                        u16 rxq_index, u32 flow_id)
 364 {
 365         struct qede_dev *edev = netdev_priv(dev);
 366         struct qede_arfs_fltr_node *n;
 367         int min_hlen, rc, tp_offset;
 368         struct ethhdr *eth;
 369         __be16 *ports;
 370         u16 tbl_idx;
 371         u8 ip_proto;
 372
 373         if (skb->encapsulation)
 374                 return -EPROTONOSUPPORT;
 375
 376         if (skb->protocol != htons(ETH_P_IP) &&
 377             skb->protocol != htons(ETH_P_IPV6))
 378                 return -EPROTONOSUPPORT;
 379
 380         if (skb->protocol == htons(ETH_P_IP)) {
 381                 ip_proto = ip_hdr(skb)->protocol;
 382                 tp_offset = sizeof(struct iphdr);
 383         } else {
 384                 ip_proto = ipv6_hdr(skb)->nexthdr;
 385                 tp_offset = sizeof(struct ipv6hdr);
 386         }
 387
 388         if (ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP)
 389                 return -EPROTONOSUPPORT;
 390
 391         ports = (__be16 *)(skb->data + tp_offset);
 392         tbl_idx = skb_get_hash_raw(skb) & QEDE_RFS_FLW_MASK;
 393
 394         spin_lock_bh(&edev->arfs->arfs_list_lock);
 395
 396         n = qede_arfs_htbl_key_search(&edev->arfs->arfs_hl_head[tbl_idx],
 397                                       skb, ports[0], ports[1], ip_proto);
 398
 399         if (n) {
 400                 /* Filter match */
 401                 n->next_rxq_id = rxq_index;
 402
 403                 if (test_bit(QEDE_FLTR_VALID, &n->state)) {
 404                         if (n->rxq_id != rxq_index)
 405                                 qede_configure_arfs_fltr(edev, n, n->rxq_id,
 406                                                          false);
 407                 } else {
 408                         if (!n->used) {
 409                                 n->rxq_id = rxq_index;
 410                                 qede_configure_arfs_fltr(edev, n, n->rxq_id,
 411                                                          true);
 412                         }
 413                 }
 414
 415                 rc = n->sw_id;
 416                 goto ret_unlock;
 417         }
 418
 419         min_hlen = ETH_HLEN + skb_headlen(skb);
 420
 421         n = qede_alloc_filter(edev, min_hlen);
 422         if (!n) {
 423                 rc = -ENOMEM;
 424                 goto ret_unlock;
 425         }
 426
 427         n->buf_len = min_hlen;
 428         n->rxq_id = rxq_index;
 429         n->next_rxq_id = rxq_index;
 430         n->tuple.src_port = ports[0];
 431         n->tuple.dst_port = ports[1];
 432         n->flow_id = flow_id;
 433
 434         if (skb->protocol == htons(ETH_P_IP)) {
 435                 n->tuple.src_ipv4 = ip_hdr(skb)->saddr;
 436                 n->tuple.dst_ipv4 = ip_hdr(skb)->daddr;
 437         } else {
 438                 memcpy(&n->tuple.src_ipv6, &ipv6_hdr(skb)->saddr,
 439                        sizeof(struct in6_addr));
 440                 memcpy(&n->tuple.dst_ipv6, &ipv6_hdr(skb)->daddr,
 441                        sizeof(struct in6_addr));
 442         }
 443
 444         eth = (struct ethhdr *)n->data;
 445         eth->h_proto = skb->protocol;
 446         n->tuple.eth_proto = skb->protocol;
 447         n->tuple.ip_proto = ip_proto;
 448         memcpy(n->data + ETH_HLEN, skb->data, skb_headlen(skb));
 449
 450         n->mapping = dma_map_single(&edev->pdev->dev, n->data,
 451                                     n->buf_len, DMA_TO_DEVICE);
 452         if (dma_mapping_error(&edev->pdev->dev, n->mapping)) {
 453                 DP_NOTICE(edev, "Failed to map DMA memory for arfs\n");
 454                 qede_free_arfs_filter(edev, n);
 455                 rc = -ENOMEM;
 456                 goto ret_unlock;
 457         }
 458
 459         INIT_HLIST_NODE(&n->node);
 460         hlist_add_head(&n->node, &edev->arfs->arfs_hl_head[tbl_idx]);
 461         edev->arfs->filter_count++;
 462
 463         if (edev->arfs->filter_count == 1 && !edev->arfs->enable) {
 464                 edev->ops->configure_arfs_searcher(edev->cdev, true);
 465                 edev->arfs->enable = true;
 466         }
 467
 468         qede_configure_arfs_fltr(edev, n, n->rxq_id, true);
 469
 470         spin_unlock_bh(&edev->arfs->arfs_list_lock);
 471
 472         set_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags);
 473         schedule_delayed_work(&edev->sp_task, 0);
 474         return n->sw_id;
 475
 476 ret_unlock:
 477         spin_unlock_bh(&edev->arfs->arfs_list_lock);
 478         return rc;
 479 }
 480 #endif
 481
 482 void qede_force_mac(void *dev, u8 *mac, bool forced)
 483 {
 484         struct qede_dev *edev = dev;
 485
 486         /* MAC hints take effect only if we haven't set one already */
 487         if (is_valid_ether_addr(edev->ndev->dev_addr) && !forced)
 488                 return;
 489
 490         ether_addr_copy(edev->ndev->dev_addr, mac);
 491         ether_addr_copy(edev->primary_mac, mac);
 492 }
 493
 494 void qede_fill_rss_params(struct qede_dev *edev,
 495                           struct qed_update_vport_rss_params *rss, u8 *update)
 496 {
 497         bool need_reset = false;
 498         int i;
 499
 500         if (QEDE_RSS_COUNT(edev) <= 1) {
 501                 memset(rss, 0, sizeof(*rss));
 502                 *update = 0;
 503                 return;
 504         }
 505
 506         /* Need to validate current RSS config uses valid entries */
 507         for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
 508                 if (edev->rss_ind_table[i] >= QEDE_RSS_COUNT(edev)) {
 509                         need_reset = true;
 510                         break;
 511                 }
 512         }
 513
 514         if (!(edev->rss_params_inited & QEDE_RSS_INDIR_INITED) || need_reset) {
 515                 for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
 516                         u16 indir_val, val;
 517
 518                         val = QEDE_RSS_COUNT(edev);
 519                         indir_val = ethtool_rxfh_indir_default(i, val);
 520                         edev->rss_ind_table[i] = indir_val;
 521                 }
 522                 edev->rss_params_inited |= QEDE_RSS_INDIR_INITED;
 523         }
 524
 525         /* Now that we have the queue-indirection, prepare the handles */
 526         for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
 527                 u16 idx = QEDE_RX_QUEUE_IDX(edev, edev->rss_ind_table[i]);
 528
 529                 rss->rss_ind_table[i] = edev->fp_array[idx].rxq->handle;
 530         }
 531
 532         if (!(edev->rss_params_inited & QEDE_RSS_KEY_INITED)) {
 533                 netdev_rss_key_fill(edev->rss_key, sizeof(edev->rss_key));
 534                 edev->rss_params_inited |= QEDE_RSS_KEY_INITED;
 535         }
 536         memcpy(rss->rss_key, edev->rss_key, sizeof(rss->rss_key));
 537
 538         if (!(edev->rss_params_inited & QEDE_RSS_CAPS_INITED)) {
 539                 edev->rss_caps = QED_RSS_IPV4 | QED_RSS_IPV6 |
 540                     QED_RSS_IPV4_TCP | QED_RSS_IPV6_TCP;
 541                 edev->rss_params_inited |= QEDE_RSS_CAPS_INITED;
 542         }
 543         rss->rss_caps = edev->rss_caps;
 544
 545         *update = 1;
 546 }
 547
 548 static int qede_set_ucast_rx_mac(struct qede_dev *edev,
 549                                  enum qed_filter_xcast_params_type opcode,
 550                                  unsigned char mac[ETH_ALEN])
 551 {
 552         struct qed_filter_params filter_cmd;
 553
 554         memset(&filter_cmd, 0, sizeof(filter_cmd));
 555         filter_cmd.type = QED_FILTER_TYPE_UCAST;
 556         filter_cmd.filter.ucast.type = opcode;
 557         filter_cmd.filter.ucast.mac_valid = 1;
 558         ether_addr_copy(filter_cmd.filter.ucast.mac, mac);
 559
 560         return edev->ops->filter_config(edev->cdev, &filter_cmd);
 561 }
 562
 563 static int qede_set_ucast_rx_vlan(struct qede_dev *edev,
 564                                   enum qed_filter_xcast_params_type opcode,
 565                                   u16 vid)
 566 {
 567         struct qed_filter_params filter_cmd;
 568
 569         memset(&filter_cmd, 0, sizeof(filter_cmd));
 570         filter_cmd.type = QED_FILTER_TYPE_UCAST;
 571         filter_cmd.filter.ucast.type = opcode;
 572         filter_cmd.filter.ucast.vlan_valid = 1;
 573         filter_cmd.filter.ucast.vlan = vid;
 574
 575         return edev->ops->filter_config(edev->cdev, &filter_cmd);
 576 }
 577
 578 static int qede_config_accept_any_vlan(struct qede_dev *edev, bool action)
 579 {
 580         struct qed_update_vport_params *params;
 581         int rc;
 582
 583         /* Proceed only if action actually needs to be performed */
 584         if (edev->accept_any_vlan == action)
 585                 return 0;
 586
 587         params = vzalloc(sizeof(*params));
 588         if (!params)
 589                 return -ENOMEM;
 590
 591         params->vport_id = 0;
 592         params->accept_any_vlan = action;
 593         params->update_accept_any_vlan_flg = 1;
 594
 595         rc = edev->ops->vport_update(edev->cdev, params);
 596         if (rc) {
 597                 DP_ERR(edev, "Failed to %s accept-any-vlan\n",
 598                        action ? "enable" : "disable");
 599         } else {
 600                 DP_INFO(edev, "%s accept-any-vlan\n",
 601                         action ? "enabled" : "disabled");
 602                 edev->accept_any_vlan = action;
 603         }
 604
 605         vfree(params);
 606         return 0;
 607 }
 608
 609 int qede_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
 610 {
 611         struct qede_dev *edev = netdev_priv(dev);
 612         struct qede_vlan *vlan, *tmp;
 613         int rc = 0;
 614
 615         DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan 0x%04x\n", vid);
 616
 617         vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
 618         if (!vlan) {
 619                 DP_INFO(edev, "Failed to allocate struct for vlan\n");
 620                 return -ENOMEM;
 621         }
 622         INIT_LIST_HEAD(&vlan->list);
 623         vlan->vid = vid;
 624         vlan->configured = false;
 625
 626         /* Verify vlan isn't already configured */
 627         list_for_each_entry(tmp, &edev->vlan_list, list) {
 628                 if (tmp->vid == vlan->vid) {
 629                         DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
 630                                    "vlan already configured\n");
 631                         kfree(vlan);
 632                         return -EEXIST;
 633                 }
 634         }
 635
 636         /* If interface is down, cache this VLAN ID and return */
 637         __qede_lock(edev);
 638         if (edev->state != QEDE_STATE_OPEN) {
 639                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
 640                            "Interface is down, VLAN %d will be configured when interface is up\n",
 641                            vid);
 642                 if (vid != 0)
 643                         edev->non_configured_vlans++;
 644                 list_add(&vlan->list, &edev->vlan_list);
 645                 goto out;
 646         }
 647
 648         /* Check for the filter limit.
 649          * Note - vlan0 has a reserved filter and can be added without
 650          * worrying about quota
 651          */
 652         if ((edev->configured_vlans < edev->dev_info.num_vlan_filters) ||
 653             (vlan->vid == 0)) {
 654                 rc = qede_set_ucast_rx_vlan(edev,
 655                                             QED_FILTER_XCAST_TYPE_ADD,
 656                                             vlan->vid);
 657                 if (rc) {
 658                         DP_ERR(edev, "Failed to configure VLAN %d\n",
 659                                vlan->vid);
 660                         kfree(vlan);
 661                         goto out;
 662                 }
 663                 vlan->configured = true;
 664
 665                 /* vlan0 filter isn't consuming out of our quota */
 666                 if (vlan->vid != 0)
 667                         edev->configured_vlans++;
 668         } else {
 669                 /* Out of quota; Activate accept-any-VLAN mode */
 670                 if (!edev->non_configured_vlans) {
 671                         rc = qede_config_accept_any_vlan(edev, true);
 672                         if (rc) {
 673                                 kfree(vlan);
 674                                 goto out;
 675                         }
 676                 }
 677
 678                 edev->non_configured_vlans++;
 679         }
 680
 681         list_add(&vlan->list, &edev->vlan_list);
 682
 683 out:
 684         __qede_unlock(edev);
 685         return rc;
 686 }
 687
 688 static void qede_del_vlan_from_list(struct qede_dev *edev,
 689                                     struct qede_vlan *vlan)
 690 {
 691         /* vlan0 filter isn't consuming out of our quota */
 692         if (vlan->vid != 0) {
 693                 if (vlan->configured)
 694                         edev->configured_vlans--;
 695                 else
 696                         edev->non_configured_vlans--;
 697         }
 698
 699         list_del(&vlan->list);
 700         kfree(vlan);
 701 }
 702
 703 int qede_configure_vlan_filters(struct qede_dev *edev)
 704 {
 705         int rc = 0, real_rc = 0, accept_any_vlan = 0;
 706         struct qed_dev_eth_info *dev_info;
 707         struct qede_vlan *vlan = NULL;
 708
 709         if (list_empty(&edev->vlan_list))
 710                 return 0;
 711
 712         dev_info = &edev->dev_info;
 713
 714         /* Configure non-configured vlans */
 715         list_for_each_entry(vlan, &edev->vlan_list, list) {
 716                 if (vlan->configured)
 717                         continue;
 718
 719                 /* We have used all our credits, now enable accept_any_vlan */
 720                 if ((vlan->vid != 0) &&
 721                     (edev->configured_vlans == dev_info->num_vlan_filters)) {
 722                         accept_any_vlan = 1;
 723                         continue;
 724                 }
 725
 726                 DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan %d\n", vlan->vid);
 727
 728                 rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_ADD,
 729                                             vlan->vid);
 730                 if (rc) {
 731                         DP_ERR(edev, "Failed to configure VLAN %u\n",
 732                                vlan->vid);
 733                         real_rc = rc;
 734                         continue;
 735                 }
 736
 737                 vlan->configured = true;
 738                 /* vlan0 filter doesn't consume our VLAN filter's quota */
 739                 if (vlan->vid != 0) {
 740                         edev->non_configured_vlans--;
 741                         edev->configured_vlans++;
 742                 }
 743         }
 744
 745         /* enable accept_any_vlan mode if we have more VLANs than credits,
 746          * or remove accept_any_vlan mode if we've actually removed
 747          * a non-configured vlan, and all remaining vlans are truly configured.
 748          */
 749
 750         if (accept_any_vlan)
 751                 rc = qede_config_accept_any_vlan(edev, true);
 752         else if (!edev->non_configured_vlans)
 753                 rc = qede_config_accept_any_vlan(edev, false);
 754
 755         if (rc && !real_rc)
 756                 real_rc = rc;
 757
 758         return real_rc;
 759 }
 760
 761 int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
 762 {
 763         struct qede_dev *edev = netdev_priv(dev);
 764         struct qede_vlan *vlan = NULL;
 765         int rc = 0;
 766
 767         DP_VERBOSE(edev, NETIF_MSG_IFDOWN, "Removing vlan 0x%04x\n", vid);
 768
 769         /* Find whether entry exists */
 770         __qede_lock(edev);
 771         list_for_each_entry(vlan, &edev->vlan_list, list)
 772                 if (vlan->vid == vid)
 773                         break;
 774
 775         if (!vlan || (vlan->vid != vid)) {
 776                 DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
 777                            "Vlan isn't configured\n");
 778                 goto out;
 779         }
 780
 781         if (edev->state != QEDE_STATE_OPEN) {
 782                 /* As interface is already down, we don't have a VPORT
 783                  * instance to remove vlan filter. So just update vlan list
 784                  */
 785                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
 786                            "Interface is down, removing VLAN from list only\n");
 787                 qede_del_vlan_from_list(edev, vlan);
 788                 goto out;
 789         }
 790
 791         /* Remove vlan */
 792         if (vlan->configured) {
 793                 rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_DEL,
 794                                             vid);
 795                 if (rc) {
 796                         DP_ERR(edev, "Failed to remove VLAN %d\n", vid);
 797                         goto out;
 798                 }
 799         }
 800
 801         qede_del_vlan_from_list(edev, vlan);
 802
 803         /* We have removed a VLAN - try to see if we can
 804          * configure non-configured VLAN from the list.
 805          */
 806         rc = qede_configure_vlan_filters(edev);
 807
 808 out:
 809         __qede_unlock(edev);
 810         return rc;
 811 }
 812
 813 void qede_vlan_mark_nonconfigured(struct qede_dev *edev)
 814 {
 815         struct qede_vlan *vlan = NULL;
 816
 817         if (list_empty(&edev->vlan_list))
 818                 return;
 819
 820         list_for_each_entry(vlan, &edev->vlan_list, list) {
 821                 if (!vlan->configured)
 822                         continue;
 823
 824                 vlan->configured = false;
 825
 826                 /* vlan0 filter isn't consuming out of our quota */
 827                 if (vlan->vid != 0) {
 828                         edev->non_configured_vlans++;
 829                         edev->configured_vlans--;
 830                 }
 831
 832                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
 833                            "marked vlan %d as non-configured\n", vlan->vid);
 834         }
 835
 836         edev->accept_any_vlan = false;
 837 }
 838
 839 static void qede_set_features_reload(struct qede_dev *edev,
 840                                      struct qede_reload_args *args)
 841 {
 842         edev->ndev->features = args->u.features;
 843 }
 844
 845 int qede_set_features(struct net_device *dev, netdev_features_t features)
 846 {
 847         struct qede_dev *edev = netdev_priv(dev);
 848         netdev_features_t changes = features ^ dev->features;
 849         bool need_reload = false;
 850
 851         /* No action needed if hardware GRO is disabled during driver load */
 852         if (changes & NETIF_F_GRO) {
 853                 if (dev->features & NETIF_F_GRO)
 854                         need_reload = !edev->gro_disable;
 855                 else
 856                         need_reload = edev->gro_disable;
 857         }
 858
 859         if (need_reload) {
 860                 struct qede_reload_args args;
 861
 862                 args.u.features = features;
 863                 args.func = &qede_set_features_reload;
 864
 865                 /* Make sure that we definitely need to reload.
 866                  * In case of an eBPF attached program, there will be no FW
 867                  * aggregations, so no need to actually reload.
 868                  */
 869                 __qede_lock(edev);
 870                 if (edev->xdp_prog)
 871                         args.func(edev, &args);
 872                 else
 873                         qede_reload(edev, &args, true);
 874                 __qede_unlock(edev);
 875
 876                 return 1;
 877         }
 878
 879         return 0;
 880 }
 881
 882 void qede_udp_tunnel_add(struct net_device *dev, struct udp_tunnel_info *ti)
 883 {
 884         struct qede_dev *edev = netdev_priv(dev);
 885         u16 t_port = ntohs(ti->port);
 886
 887         switch (ti->type) {
 888         case UDP_TUNNEL_TYPE_VXLAN:
 889                 if (edev->vxlan_dst_port)
 890                         return;
 891
 892                 edev->vxlan_dst_port = t_port;
 893
 894                 DP_VERBOSE(edev, QED_MSG_DEBUG, "Added vxlan port=%d\n",
 895                            t_port);
 896
 897                 set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags);
 898                 break;
 899         case UDP_TUNNEL_TYPE_GENEVE:
 900                 if (edev->geneve_dst_port)
 901                         return;
 902
 903                 edev->geneve_dst_port = t_port;
 904
 905                 DP_VERBOSE(edev, QED_MSG_DEBUG, "Added geneve port=%d\n",
 906                            t_port);
 907                 set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags);
 908                 break;
 909         default:
 910                 return;
 911         }
 912
 913         schedule_delayed_work(&edev->sp_task, 0);
 914 }
 915
 916 void qede_udp_tunnel_del(struct net_device *dev, struct udp_tunnel_info *ti)
 917 {
 918         struct qede_dev *edev = netdev_priv(dev);
 919         u16 t_port = ntohs(ti->port);
 920
 921         switch (ti->type) {
 922         case UDP_TUNNEL_TYPE_VXLAN:
 923                 if (t_port != edev->vxlan_dst_port)
 924                         return;
 925
 926                 edev->vxlan_dst_port = 0;
 927
 928                 DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted vxlan port=%d\n",
 929                            t_port);
 930
 931                 set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags);
 932                 break;
 933         case UDP_TUNNEL_TYPE_GENEVE:
 934                 if (t_port != edev->geneve_dst_port)
 935                         return;
 936
 937                 edev->geneve_dst_port = 0;
 938
 939                 DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted geneve port=%d\n",
 940                            t_port);
 941                 set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags);
 942                 break;
 943         default:
 944                 return;
 945         }
 946
 947         schedule_delayed_work(&edev->sp_task, 0);
 948 }
 949
 950 static void qede_xdp_reload_func(struct qede_dev *edev,
 951                                  struct qede_reload_args *args)
 952 {
 953         struct bpf_prog *old;
 954
 955         old = xchg(&edev->xdp_prog, args->u.new_prog);
 956         if (old)
 957                 bpf_prog_put(old);
 958 }
 959
 960 static int qede_xdp_set(struct qede_dev *edev, struct bpf_prog *prog)
 961 {
 962         struct qede_reload_args args;
 963
 964         /* If we're called, there was already a bpf reference increment */
 965         args.func = &qede_xdp_reload_func;
 966         args.u.new_prog = prog;
 967         qede_reload(edev, &args, false);
 968
 969         return 0;
 970 }
 971
 972 int qede_xdp(struct net_device *dev, struct netdev_xdp *xdp)
 973 {
 974         struct qede_dev *edev = netdev_priv(dev);
 975
 976         if (IS_VF(edev)) {
 977                 DP_NOTICE(edev, "VFs don't support XDP\n");
 978                 return -EOPNOTSUPP;
 979         }
 980
 981         switch (xdp->command) {
 982         case XDP_SETUP_PROG:
 983                 return qede_xdp_set(edev, xdp->prog);
 984         case XDP_QUERY_PROG:
 985                 xdp->prog_attached = !!edev->xdp_prog;
 986                 return 0;
 987         default:
 988                 return -EINVAL;
 989         }
 990 }
 991
 992 static int qede_set_mcast_rx_mac(struct qede_dev *edev,
 993                                  enum qed_filter_xcast_params_type opcode,
 994                                  unsigned char *mac, int num_macs)
 995 {
 996         struct qed_filter_params filter_cmd;
 997         int i;
 998
 999         memset(&filter_cmd, 0, sizeof(filter_cmd));
1000         filter_cmd.type = QED_FILTER_TYPE_MCAST;
1001         filter_cmd.filter.mcast.type = opcode;
1002         filter_cmd.filter.mcast.num = num_macs;
1003
1004         for (i = 0; i < num_macs; i++, mac += ETH_ALEN)
1005                 ether_addr_copy(filter_cmd.filter.mcast.mac[i], mac);
1006
1007         return edev->ops->filter_config(edev->cdev, &filter_cmd);
1008 }
1009
1010 int qede_set_mac_addr(struct net_device *ndev, void *p)
1011 {
1012         struct qede_dev *edev = netdev_priv(ndev);
1013         struct sockaddr *addr = p;
1014         int rc;
1015
1016         ASSERT_RTNL(); /* @@@TBD To be removed */
1017
1018         DP_INFO(edev, "Set_mac_addr called\n");
1019
1020         if (!is_valid_ether_addr(addr->sa_data)) {
1021                 DP_NOTICE(edev, "The MAC address is not valid\n");
1022                 return -EFAULT;
1023         }
1024
1025         if (!edev->ops->check_mac(edev->cdev, addr->sa_data)) {
1026                 DP_NOTICE(edev, "qed prevents setting MAC\n");
1027                 return -EINVAL;
1028         }
1029
1030         ether_addr_copy(ndev->dev_addr, addr->sa_data);
1031
1032         if (!netif_running(ndev))  {
1033                 DP_NOTICE(edev, "The device is currently down\n");
1034                 return 0;
1035         }
1036
1037         /* Remove the previous primary mac */
1038         rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
1039                                    edev->primary_mac);
1040         if (rc)
1041                 return rc;
1042
1043         edev->ops->common->update_mac(edev->cdev, addr->sa_data);
1044
1045         /* Add MAC filter according to the new unicast HW MAC address */
1046         ether_addr_copy(edev->primary_mac, ndev->dev_addr);
1047         return qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
1048                                       edev->primary_mac);
1049 }
1050
1051 static int
1052 qede_configure_mcast_filtering(struct net_device *ndev,
1053                                enum qed_filter_rx_mode_type *accept_flags)
1054 {
1055         struct qede_dev *edev = netdev_priv(ndev);
1056         unsigned char *mc_macs, *temp;
1057         struct netdev_hw_addr *ha;
1058         int rc = 0, mc_count;
1059         size_t size;
1060
1061         size = 64 * ETH_ALEN;
1062
1063         mc_macs = kzalloc(size, GFP_KERNEL);
1064         if (!mc_macs) {
1065                 DP_NOTICE(edev,
1066                           "Failed to allocate memory for multicast MACs\n");
1067                 rc = -ENOMEM;
1068                 goto exit;
1069         }
1070
1071         temp = mc_macs;
1072
1073         /* Remove all previously configured MAC filters */
1074         rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
1075                                    mc_macs, 1);
1076         if (rc)
1077                 goto exit;
1078
1079         netif_addr_lock_bh(ndev);
1080
1081         mc_count = netdev_mc_count(ndev);
1082         if (mc_count < 64) {
1083                 netdev_for_each_mc_addr(ha, ndev) {
1084                         ether_addr_copy(temp, ha->addr);
1085                         temp += ETH_ALEN;
1086                 }
1087         }
1088
1089         netif_addr_unlock_bh(ndev);
1090
1091         /* Check for all multicast @@@TBD resource allocation */
1092         if ((ndev->flags & IFF_ALLMULTI) || (mc_count > 64)) {
1093                 if (*accept_flags == QED_FILTER_RX_MODE_TYPE_REGULAR)
1094                         *accept_flags = QED_FILTER_RX_MODE_TYPE_MULTI_PROMISC;
1095         } else {
1096                 /* Add all multicast MAC filters */
1097                 rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
1098                                            mc_macs, mc_count);
1099         }
1100
1101 exit:
1102         kfree(mc_macs);
1103         return rc;
1104 }
1105
1106 void qede_set_rx_mode(struct net_device *ndev)
1107 {
1108         struct qede_dev *edev = netdev_priv(ndev);
1109
1110         set_bit(QEDE_SP_RX_MODE, &edev->sp_flags);
1111         schedule_delayed_work(&edev->sp_task, 0);
1112 }
1113
1114 /* Must be called with qede_lock held */
1115 void qede_config_rx_mode(struct net_device *ndev)
1116 {
1117         enum qed_filter_rx_mode_type accept_flags;
1118         struct qede_dev *edev = netdev_priv(ndev);
1119         struct qed_filter_params rx_mode;
1120         unsigned char *uc_macs, *temp;
1121         struct netdev_hw_addr *ha;
1122         int rc, uc_count;
1123         size_t size;
1124
1125         netif_addr_lock_bh(ndev);
1126
1127         uc_count = netdev_uc_count(ndev);
1128         size = uc_count * ETH_ALEN;
1129
1130         uc_macs = kzalloc(size, GFP_ATOMIC);
1131         if (!uc_macs) {
1132                 DP_NOTICE(edev, "Failed to allocate memory for unicast MACs\n");
1133                 netif_addr_unlock_bh(ndev);
1134                 return;
1135         }
1136
1137         temp = uc_macs;
1138         netdev_for_each_uc_addr(ha, ndev) {
1139                 ether_addr_copy(temp, ha->addr);
1140                 temp += ETH_ALEN;
1141         }
1142
1143         netif_addr_unlock_bh(ndev);
1144
1145         /* Configure the struct for the Rx mode */
1146         memset(&rx_mode, 0, sizeof(struct qed_filter_params));
1147         rx_mode.type = QED_FILTER_TYPE_RX_MODE;
1148
1149         /* Remove all previous unicast secondary macs and multicast macs
1150          * (configrue / leave the primary mac)
1151          */
1152         rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_REPLACE,
1153                                    edev->primary_mac);
1154         if (rc)
1155                 goto out;
1156
1157         /* Check for promiscuous */
1158         if (ndev->flags & IFF_PROMISC)
1159                 accept_flags = QED_FILTER_RX_MODE_TYPE_PROMISC;
1160         else
1161                 accept_flags = QED_FILTER_RX_MODE_TYPE_REGULAR;
1162
1163         /* Configure all filters regardless, in case promisc is rejected */
1164         if (uc_count < edev->dev_info.num_mac_filters) {
1165                 int i;
1166
1167                 temp = uc_macs;
1168                 for (i = 0; i < uc_count; i++) {
1169                         rc = qede_set_ucast_rx_mac(edev,
1170                                                    QED_FILTER_XCAST_TYPE_ADD,
1171                                                    temp);
1172                         if (rc)
1173                                 goto out;
1174
1175                         temp += ETH_ALEN;
1176                 }
1177         } else {
1178                 accept_flags = QED_FILTER_RX_MODE_TYPE_PROMISC;
1179         }
1180
1181         rc = qede_configure_mcast_filtering(ndev, &accept_flags);
1182         if (rc)
1183                 goto out;
1184
1185         /* take care of VLAN mode */
1186         if (ndev->flags & IFF_PROMISC) {
1187                 qede_config_accept_any_vlan(edev, true);
1188         } else if (!edev->non_configured_vlans) {
1189                 /* It's possible that accept_any_vlan mode is set due to a
1190                  * previous setting of IFF_PROMISC. If vlan credits are
1191                  * sufficient, disable accept_any_vlan.
1192                  */
1193                 qede_config_accept_any_vlan(edev, false);
1194         }
1195
1196         rx_mode.filter.accept_flags = accept_flags;
1197         edev->ops->filter_config(edev->cdev, &rx_mode);
1198 out:
1199         kfree(uc_macs);
1200 }