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                                              sizeof(long));
 272         if (!edev->arfs->arfs_fltr_bmap) {
 273                 free_irq_cpu_rmap(edev->ndev->rx_cpu_rmap);
 274                 edev->ndev->rx_cpu_rmap = NULL;
 275                 vfree(edev->arfs);
 276                 edev->arfs = NULL;
 277                 return -ENOMEM;
 278         }
 279
 280         return 0;
 281 }
 282
 283 void qede_free_arfs(struct qede_dev *edev)
 284 {
 285         if (!edev->arfs)
 286                 return;
 287
 288         if (edev->ndev->rx_cpu_rmap)
 289                 free_irq_cpu_rmap(edev->ndev->rx_cpu_rmap);
 290
 291         edev->ndev->rx_cpu_rmap = NULL;
 292         vfree(edev->arfs->arfs_fltr_bmap);
 293         edev->arfs->arfs_fltr_bmap = NULL;
 294         vfree(edev->arfs);
 295         edev->arfs = NULL;
 296 }
 297
 298 static bool qede_compare_ip_addr(struct qede_arfs_fltr_node *tpos,
 299                                  const struct sk_buff *skb)
 300 {
 301         if (skb->protocol == htons(ETH_P_IP)) {
 302                 if (tpos->tuple.src_ipv4 == ip_hdr(skb)->saddr &&
 303                     tpos->tuple.dst_ipv4 == ip_hdr(skb)->daddr)
 304                         return true;
 305                 else
 306                         return false;
 307         } else {
 308                 struct in6_addr *src = &tpos->tuple.src_ipv6;
 309                 u8 size = sizeof(struct in6_addr);
 310
 311                 if (!memcmp(src, &ipv6_hdr(skb)->saddr, size) &&
 312                     !memcmp(&tpos->tuple.dst_ipv6, &ipv6_hdr(skb)->daddr, size))
 313                         return true;
 314                 else
 315                         return false;
 316         }
 317 }
 318
 319 static struct qede_arfs_fltr_node *
 320 qede_arfs_htbl_key_search(struct hlist_head *h, const struct sk_buff *skb,
 321                           __be16 src_port, __be16 dst_port, u8 ip_proto)
 322 {
 323         struct qede_arfs_fltr_node *tpos;
 324
 325         hlist_for_each_entry(tpos, h, node)
 326                 if (tpos->tuple.ip_proto == ip_proto &&
 327                     tpos->tuple.eth_proto == skb->protocol &&
 328                     qede_compare_ip_addr(tpos, skb) &&
 329                     tpos->tuple.src_port == src_port &&
 330                     tpos->tuple.dst_port == dst_port)
 331                         return tpos;
 332
 333         return NULL;
 334 }
 335
 336 static struct qede_arfs_fltr_node *
 337 qede_alloc_filter(struct qede_dev *edev, int min_hlen)
 338 {
 339         struct qede_arfs_fltr_node *n;
 340         int bit_id;
 341
 342         bit_id = find_first_zero_bit(edev->arfs->arfs_fltr_bmap,
 343                                      QEDE_RFS_MAX_FLTR);
 344
 345         if (bit_id >= QEDE_RFS_MAX_FLTR)
 346                 return NULL;
 347
 348         n = kzalloc(sizeof(*n), GFP_ATOMIC);
 349         if (!n)
 350                 return NULL;
 351
 352         n->data = kzalloc(min_hlen, GFP_ATOMIC);
 353         if (!n->data) {
 354                 kfree(n);
 355                 return NULL;
 356         }
 357
 358         n->sw_id = (u16)bit_id;
 359         set_bit(bit_id, edev->arfs->arfs_fltr_bmap);
 360         return n;
 361 }
 362
 363 int qede_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
 364                        u16 rxq_index, u32 flow_id)
 365 {
 366         struct qede_dev *edev = netdev_priv(dev);
 367         struct qede_arfs_fltr_node *n;
 368         int min_hlen, rc, tp_offset;
 369         struct ethhdr *eth;
 370         __be16 *ports;
 371         u16 tbl_idx;
 372         u8 ip_proto;
 373
 374         if (skb->encapsulation)
 375                 return -EPROTONOSUPPORT;
 376
 377         if (skb->protocol != htons(ETH_P_IP) &&
 378             skb->protocol != htons(ETH_P_IPV6))
 379                 return -EPROTONOSUPPORT;
 380
 381         if (skb->protocol == htons(ETH_P_IP)) {
 382                 ip_proto = ip_hdr(skb)->protocol;
 383                 tp_offset = sizeof(struct iphdr);
 384         } else {
 385                 ip_proto = ipv6_hdr(skb)->nexthdr;
 386                 tp_offset = sizeof(struct ipv6hdr);
 387         }
 388
 389         if (ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP)
 390                 return -EPROTONOSUPPORT;
 391
 392         ports = (__be16 *)(skb->data + tp_offset);
 393         tbl_idx = skb_get_hash_raw(skb) & QEDE_RFS_FLW_MASK;
 394
 395         spin_lock_bh(&edev->arfs->arfs_list_lock);
 396
 397         n = qede_arfs_htbl_key_search(&edev->arfs->arfs_hl_head[tbl_idx],
 398                                       skb, ports[0], ports[1], ip_proto);
 399
 400         if (n) {
 401                 /* Filter match */
 402                 n->next_rxq_id = rxq_index;
 403
 404                 if (test_bit(QEDE_FLTR_VALID, &n->state)) {
 405                         if (n->rxq_id != rxq_index)
 406                                 qede_configure_arfs_fltr(edev, n, n->rxq_id,
 407                                                          false);
 408                 } else {
 409                         if (!n->used) {
 410                                 n->rxq_id = rxq_index;
 411                                 qede_configure_arfs_fltr(edev, n, n->rxq_id,
 412                                                          true);
 413                         }
 414                 }
 415
 416                 rc = n->sw_id;
 417                 goto ret_unlock;
 418         }
 419
 420         min_hlen = ETH_HLEN + skb_headlen(skb);
 421
 422         n = qede_alloc_filter(edev, min_hlen);
 423         if (!n) {
 424                 rc = -ENOMEM;
 425                 goto ret_unlock;
 426         }
 427
 428         n->buf_len = min_hlen;
 429         n->rxq_id = rxq_index;
 430         n->next_rxq_id = rxq_index;
 431         n->tuple.src_port = ports[0];
 432         n->tuple.dst_port = ports[1];
 433         n->flow_id = flow_id;
 434
 435         if (skb->protocol == htons(ETH_P_IP)) {
 436                 n->tuple.src_ipv4 = ip_hdr(skb)->saddr;
 437                 n->tuple.dst_ipv4 = ip_hdr(skb)->daddr;
 438         } else {
 439                 memcpy(&n->tuple.src_ipv6, &ipv6_hdr(skb)->saddr,
 440                        sizeof(struct in6_addr));
 441                 memcpy(&n->tuple.dst_ipv6, &ipv6_hdr(skb)->daddr,
 442                        sizeof(struct in6_addr));
 443         }
 444
 445         eth = (struct ethhdr *)n->data;
 446         eth->h_proto = skb->protocol;
 447         n->tuple.eth_proto = skb->protocol;
 448         n->tuple.ip_proto = ip_proto;
 449         memcpy(n->data + ETH_HLEN, skb->data, skb_headlen(skb));
 450
 451         n->mapping = dma_map_single(&edev->pdev->dev, n->data,
 452                                     n->buf_len, DMA_TO_DEVICE);
 453         if (dma_mapping_error(&edev->pdev->dev, n->mapping)) {
 454                 DP_NOTICE(edev, "Failed to map DMA memory for arfs\n");
 455                 qede_free_arfs_filter(edev, n);
 456                 rc = -ENOMEM;
 457                 goto ret_unlock;
 458         }
 459
 460         INIT_HLIST_NODE(&n->node);
 461         hlist_add_head(&n->node, &edev->arfs->arfs_hl_head[tbl_idx]);
 462         edev->arfs->filter_count++;
 463
 464         if (edev->arfs->filter_count == 1 && !edev->arfs->enable) {
 465                 edev->ops->configure_arfs_searcher(edev->cdev, true);
 466                 edev->arfs->enable = true;
 467         }
 468
 469         qede_configure_arfs_fltr(edev, n, n->rxq_id, true);
 470
 471         spin_unlock_bh(&edev->arfs->arfs_list_lock);
 472
 473         set_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags);
 474         schedule_delayed_work(&edev->sp_task, 0);
 475         return n->sw_id;
 476
 477 ret_unlock:
 478         spin_unlock_bh(&edev->arfs->arfs_list_lock);
 479         return rc;
 480 }
 481 #endif
 482
 483 void qede_force_mac(void *dev, u8 *mac, bool forced)
 484 {
 485         struct qede_dev *edev = dev;
 486
 487         /* MAC hints take effect only if we haven't set one already */
 488         if (is_valid_ether_addr(edev->ndev->dev_addr) && !forced)
 489                 return;
 490
 491         ether_addr_copy(edev->ndev->dev_addr, mac);
 492         ether_addr_copy(edev->primary_mac, mac);
 493 }
 494
 495 void qede_fill_rss_params(struct qede_dev *edev,
 496                           struct qed_update_vport_rss_params *rss, u8 *update)
 497 {
 498         bool need_reset = false;
 499         int i;
 500
 501         if (QEDE_RSS_COUNT(edev) <= 1) {
 502                 memset(rss, 0, sizeof(*rss));
 503                 *update = 0;
 504                 return;
 505         }
 506
 507         /* Need to validate current RSS config uses valid entries */
 508         for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
 509                 if (edev->rss_ind_table[i] >= QEDE_RSS_COUNT(edev)) {
 510                         need_reset = true;
 511                         break;
 512                 }
 513         }
 514
 515         if (!(edev->rss_params_inited & QEDE_RSS_INDIR_INITED) || need_reset) {
 516                 for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
 517                         u16 indir_val, val;
 518
 519                         val = QEDE_RSS_COUNT(edev);
 520                         indir_val = ethtool_rxfh_indir_default(i, val);
 521                         edev->rss_ind_table[i] = indir_val;
 522                 }
 523                 edev->rss_params_inited |= QEDE_RSS_INDIR_INITED;
 524         }
 525
 526         /* Now that we have the queue-indirection, prepare the handles */
 527         for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
 528                 u16 idx = QEDE_RX_QUEUE_IDX(edev, edev->rss_ind_table[i]);
 529
 530                 rss->rss_ind_table[i] = edev->fp_array[idx].rxq->handle;
 531         }
 532
 533         if (!(edev->rss_params_inited & QEDE_RSS_KEY_INITED)) {
 534                 netdev_rss_key_fill(edev->rss_key, sizeof(edev->rss_key));
 535                 edev->rss_params_inited |= QEDE_RSS_KEY_INITED;
 536         }
 537         memcpy(rss->rss_key, edev->rss_key, sizeof(rss->rss_key));
 538
 539         if (!(edev->rss_params_inited & QEDE_RSS_CAPS_INITED)) {
 540                 edev->rss_caps = QED_RSS_IPV4 | QED_RSS_IPV6 |
 541                     QED_RSS_IPV4_TCP | QED_RSS_IPV6_TCP;
 542                 edev->rss_params_inited |= QEDE_RSS_CAPS_INITED;
 543         }
 544         rss->rss_caps = edev->rss_caps;
 545
 546         *update = 1;
 547 }
 548
 549 static int qede_set_ucast_rx_mac(struct qede_dev *edev,
 550                                  enum qed_filter_xcast_params_type opcode,
 551                                  unsigned char mac[ETH_ALEN])
 552 {
 553         struct qed_filter_params filter_cmd;
 554
 555         memset(&filter_cmd, 0, sizeof(filter_cmd));
 556         filter_cmd.type = QED_FILTER_TYPE_UCAST;
 557         filter_cmd.filter.ucast.type = opcode;
 558         filter_cmd.filter.ucast.mac_valid = 1;
 559         ether_addr_copy(filter_cmd.filter.ucast.mac, mac);
 560
 561         return edev->ops->filter_config(edev->cdev, &filter_cmd);
 562 }
 563
 564 static int qede_set_ucast_rx_vlan(struct qede_dev *edev,
 565                                   enum qed_filter_xcast_params_type opcode,
 566                                   u16 vid)
 567 {
 568         struct qed_filter_params filter_cmd;
 569
 570         memset(&filter_cmd, 0, sizeof(filter_cmd));
 571         filter_cmd.type = QED_FILTER_TYPE_UCAST;
 572         filter_cmd.filter.ucast.type = opcode;
 573         filter_cmd.filter.ucast.vlan_valid = 1;
 574         filter_cmd.filter.ucast.vlan = vid;
 575
 576         return edev->ops->filter_config(edev->cdev, &filter_cmd);
 577 }
 578
 579 static int qede_config_accept_any_vlan(struct qede_dev *edev, bool action)
 580 {
 581         struct qed_update_vport_params *params;
 582         int rc;
 583
 584         /* Proceed only if action actually needs to be performed */
 585         if (edev->accept_any_vlan == action)
 586                 return 0;
 587
 588         params = vzalloc(sizeof(*params));
 589         if (!params)
 590                 return -ENOMEM;
 591
 592         params->vport_id = 0;
 593         params->accept_any_vlan = action;
 594         params->update_accept_any_vlan_flg = 1;
 595
 596         rc = edev->ops->vport_update(edev->cdev, params);
 597         if (rc) {
 598                 DP_ERR(edev, "Failed to %s accept-any-vlan\n",
 599                        action ? "enable" : "disable");
 600         } else {
 601                 DP_INFO(edev, "%s accept-any-vlan\n",
 602                         action ? "enabled" : "disabled");
 603                 edev->accept_any_vlan = action;
 604         }
 605
 606         vfree(params);
 607         return 0;
 608 }
 609
 610 int qede_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
 611 {
 612         struct qede_dev *edev = netdev_priv(dev);
 613         struct qede_vlan *vlan, *tmp;
 614         int rc = 0;
 615
 616         DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan 0x%04x\n", vid);
 617
 618         vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
 619         if (!vlan) {
 620                 DP_INFO(edev, "Failed to allocate struct for vlan\n");
 621                 return -ENOMEM;
 622         }
 623         INIT_LIST_HEAD(&vlan->list);
 624         vlan->vid = vid;
 625         vlan->configured = false;
 626
 627         /* Verify vlan isn't already configured */
 628         list_for_each_entry(tmp, &edev->vlan_list, list) {
 629                 if (tmp->vid == vlan->vid) {
 630                         DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
 631                                    "vlan already configured\n");
 632                         kfree(vlan);
 633                         return -EEXIST;
 634                 }
 635         }
 636
 637         /* If interface is down, cache this VLAN ID and return */
 638         __qede_lock(edev);
 639         if (edev->state != QEDE_STATE_OPEN) {
 640                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
 641                            "Interface is down, VLAN %d will be configured when interface is up\n",
 642                            vid);
 643                 if (vid != 0)
 644                         edev->non_configured_vlans++;
 645                 list_add(&vlan->list, &edev->vlan_list);
 646                 goto out;
 647         }
 648
 649         /* Check for the filter limit.
 650          * Note - vlan0 has a reserved filter and can be added without
 651          * worrying about quota
 652          */
 653         if ((edev->configured_vlans < edev->dev_info.num_vlan_filters) ||
 654             (vlan->vid == 0)) {
 655                 rc = qede_set_ucast_rx_vlan(edev,
 656                                             QED_FILTER_XCAST_TYPE_ADD,
 657                                             vlan->vid);
 658                 if (rc) {
 659                         DP_ERR(edev, "Failed to configure VLAN %d\n",
 660                                vlan->vid);
 661                         kfree(vlan);
 662                         goto out;
 663                 }
 664                 vlan->configured = true;
 665
 666                 /* vlan0 filter isn't consuming out of our quota */
 667                 if (vlan->vid != 0)
 668                         edev->configured_vlans++;
 669         } else {
 670                 /* Out of quota; Activate accept-any-VLAN mode */
 671                 if (!edev->non_configured_vlans) {
 672                         rc = qede_config_accept_any_vlan(edev, true);
 673                         if (rc) {
 674                                 kfree(vlan);
 675                                 goto out;
 676                         }
 677                 }
 678
 679                 edev->non_configured_vlans++;
 680         }
 681
 682         list_add(&vlan->list, &edev->vlan_list);
 683
 684 out:
 685         __qede_unlock(edev);
 686         return rc;
 687 }
 688
 689 static void qede_del_vlan_from_list(struct qede_dev *edev,
 690                                     struct qede_vlan *vlan)
 691 {
 692         /* vlan0 filter isn't consuming out of our quota */
 693         if (vlan->vid != 0) {
 694                 if (vlan->configured)
 695                         edev->configured_vlans--;
 696                 else
 697                         edev->non_configured_vlans--;
 698         }
 699
 700         list_del(&vlan->list);
 701         kfree(vlan);
 702 }
 703
 704 int qede_configure_vlan_filters(struct qede_dev *edev)
 705 {
 706         int rc = 0, real_rc = 0, accept_any_vlan = 0;
 707         struct qed_dev_eth_info *dev_info;
 708         struct qede_vlan *vlan = NULL;
 709
 710         if (list_empty(&edev->vlan_list))
 711                 return 0;
 712
 713         dev_info = &edev->dev_info;
 714
 715         /* Configure non-configured vlans */
 716         list_for_each_entry(vlan, &edev->vlan_list, list) {
 717                 if (vlan->configured)
 718                         continue;
 719
 720                 /* We have used all our credits, now enable accept_any_vlan */
 721                 if ((vlan->vid != 0) &&
 722                     (edev->configured_vlans == dev_info->num_vlan_filters)) {
 723                         accept_any_vlan = 1;
 724                         continue;
 725                 }
 726
 727                 DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan %d\n", vlan->vid);
 728
 729                 rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_ADD,
 730                                             vlan->vid);
 731                 if (rc) {
 732                         DP_ERR(edev, "Failed to configure VLAN %u\n",
 733                                vlan->vid);
 734                         real_rc = rc;
 735                         continue;
 736                 }
 737
 738                 vlan->configured = true;
 739                 /* vlan0 filter doesn't consume our VLAN filter's quota */
 740                 if (vlan->vid != 0) {
 741                         edev->non_configured_vlans--;
 742                         edev->configured_vlans++;
 743                 }
 744         }
 745
 746         /* enable accept_any_vlan mode if we have more VLANs than credits,
 747          * or remove accept_any_vlan mode if we've actually removed
 748          * a non-configured vlan, and all remaining vlans are truly configured.
 749          */
 750
 751         if (accept_any_vlan)
 752                 rc = qede_config_accept_any_vlan(edev, true);
 753         else if (!edev->non_configured_vlans)
 754                 rc = qede_config_accept_any_vlan(edev, false);
 755
 756         if (rc && !real_rc)
 757                 real_rc = rc;
 758
 759         return real_rc;
 760 }
 761
 762 int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
 763 {
 764         struct qede_dev *edev = netdev_priv(dev);
 765         struct qede_vlan *vlan = NULL;
 766         int rc = 0;
 767
 768         DP_VERBOSE(edev, NETIF_MSG_IFDOWN, "Removing vlan 0x%04x\n", vid);
 769
 770         /* Find whether entry exists */
 771         __qede_lock(edev);
 772         list_for_each_entry(vlan, &edev->vlan_list, list)
 773                 if (vlan->vid == vid)
 774                         break;
 775
 776         if (!vlan || (vlan->vid != vid)) {
 777                 DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
 778                            "Vlan isn't configured\n");
 779                 goto out;
 780         }
 781
 782         if (edev->state != QEDE_STATE_OPEN) {
 783                 /* As interface is already down, we don't have a VPORT
 784                  * instance to remove vlan filter. So just update vlan list
 785                  */
 786                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
 787                            "Interface is down, removing VLAN from list only\n");
 788                 qede_del_vlan_from_list(edev, vlan);
 789                 goto out;
 790         }
 791
 792         /* Remove vlan */
 793         if (vlan->configured) {
 794                 rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_DEL,
 795                                             vid);
 796                 if (rc) {
 797                         DP_ERR(edev, "Failed to remove VLAN %d\n", vid);
 798                         goto out;
 799                 }
 800         }
 801
 802         qede_del_vlan_from_list(edev, vlan);
 803
 804         /* We have removed a VLAN - try to see if we can
 805          * configure non-configured VLAN from the list.
 806          */
 807         rc = qede_configure_vlan_filters(edev);
 808
 809 out:
 810         __qede_unlock(edev);
 811         return rc;
 812 }
 813
 814 void qede_vlan_mark_nonconfigured(struct qede_dev *edev)
 815 {
 816         struct qede_vlan *vlan = NULL;
 817
 818         if (list_empty(&edev->vlan_list))
 819                 return;
 820
 821         list_for_each_entry(vlan, &edev->vlan_list, list) {
 822                 if (!vlan->configured)
 823                         continue;
 824
 825                 vlan->configured = false;
 826
 827                 /* vlan0 filter isn't consuming out of our quota */
 828                 if (vlan->vid != 0) {
 829                         edev->non_configured_vlans++;
 830                         edev->configured_vlans--;
 831                 }
 832
 833                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
 834                            "marked vlan %d as non-configured\n", vlan->vid);
 835         }
 836
 837         edev->accept_any_vlan = false;
 838 }
 839
 840 static void qede_set_features_reload(struct qede_dev *edev,
 841                                      struct qede_reload_args *args)
 842 {
 843         edev->ndev->features = args->u.features;
 844 }
 845
 846 int qede_set_features(struct net_device *dev, netdev_features_t features)
 847 {
 848         struct qede_dev *edev = netdev_priv(dev);
 849         netdev_features_t changes = features ^ dev->features;
 850         bool need_reload = false;
 851
 852         /* No action needed if hardware GRO is disabled during driver load */
 853         if (changes & NETIF_F_GRO) {
 854                 if (dev->features & NETIF_F_GRO)
 855                         need_reload = !edev->gro_disable;
 856                 else
 857                         need_reload = edev->gro_disable;
 858         }
 859
 860         if (need_reload) {
 861                 struct qede_reload_args args;
 862
 863                 args.u.features = features;
 864                 args.func = &qede_set_features_reload;
 865
 866                 /* Make sure that we definitely need to reload.
 867                  * In case of an eBPF attached program, there will be no FW
 868                  * aggregations, so no need to actually reload.
 869                  */
 870                 __qede_lock(edev);
 871                 if (edev->xdp_prog)
 872                         args.func(edev, &args);
 873                 else
 874                         qede_reload(edev, &args, true);
 875                 __qede_unlock(edev);
 876
 877                 return 1;
 878         }
 879
 880         return 0;
 881 }
 882
 883 void qede_udp_tunnel_add(struct net_device *dev, struct udp_tunnel_info *ti)
 884 {
 885         struct qede_dev *edev = netdev_priv(dev);
 886         u16 t_port = ntohs(ti->port);
 887
 888         switch (ti->type) {
 889         case UDP_TUNNEL_TYPE_VXLAN:
 890                 if (edev->vxlan_dst_port)
 891                         return;
 892
 893                 edev->vxlan_dst_port = t_port;
 894
 895                 DP_VERBOSE(edev, QED_MSG_DEBUG, "Added vxlan port=%d\n",
 896                            t_port);
 897
 898                 set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags);
 899                 break;
 900         case UDP_TUNNEL_TYPE_GENEVE:
 901                 if (edev->geneve_dst_port)
 902                         return;
 903
 904                 edev->geneve_dst_port = t_port;
 905
 906                 DP_VERBOSE(edev, QED_MSG_DEBUG, "Added geneve port=%d\n",
 907                            t_port);
 908                 set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags);
 909                 break;
 910         default:
 911                 return;
 912         }
 913
 914         schedule_delayed_work(&edev->sp_task, 0);
 915 }
 916
 917 void qede_udp_tunnel_del(struct net_device *dev, struct udp_tunnel_info *ti)
 918 {
 919         struct qede_dev *edev = netdev_priv(dev);
 920         u16 t_port = ntohs(ti->port);
 921
 922         switch (ti->type) {
 923         case UDP_TUNNEL_TYPE_VXLAN:
 924                 if (t_port != edev->vxlan_dst_port)
 925                         return;
 926
 927                 edev->vxlan_dst_port = 0;
 928
 929                 DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted vxlan port=%d\n",
 930                            t_port);
 931
 932                 set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags);
 933                 break;
 934         case UDP_TUNNEL_TYPE_GENEVE:
 935                 if (t_port != edev->geneve_dst_port)
 936                         return;
 937
 938                 edev->geneve_dst_port = 0;
 939
 940                 DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted geneve port=%d\n",
 941                            t_port);
 942                 set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags);
 943                 break;
 944         default:
 945                 return;
 946         }
 947
 948         schedule_delayed_work(&edev->sp_task, 0);
 949 }
 950
 951 static void qede_xdp_reload_func(struct qede_dev *edev,
 952                                  struct qede_reload_args *args)
 953 {
 954         struct bpf_prog *old;
 955
 956         old = xchg(&edev->xdp_prog, args->u.new_prog);
 957         if (old)
 958                 bpf_prog_put(old);
 959 }
 960
 961 static int qede_xdp_set(struct qede_dev *edev, struct bpf_prog *prog)
 962 {
 963         struct qede_reload_args args;
 964
 965         /* If we're called, there was already a bpf reference increment */
 966         args.func = &qede_xdp_reload_func;
 967         args.u.new_prog = prog;
 968         qede_reload(edev, &args, false);
 969
 970         return 0;
 971 }
 972
 973 int qede_xdp(struct net_device *dev, struct netdev_xdp *xdp)
 974 {
 975         struct qede_dev *edev = netdev_priv(dev);
 976
 977         if (IS_VF(edev)) {
 978                 DP_NOTICE(edev, "VFs don't support XDP\n");
 979                 return -EOPNOTSUPP;
 980         }
 981
 982         switch (xdp->command) {
 983         case XDP_SETUP_PROG:
 984                 return qede_xdp_set(edev, xdp->prog);
 985         case XDP_QUERY_PROG:
 986                 xdp->prog_attached = !!edev->xdp_prog;
 987                 return 0;
 988         default:
 989                 return -EINVAL;
 990         }
 991 }
 992
 993 static int qede_set_mcast_rx_mac(struct qede_dev *edev,
 994                                  enum qed_filter_xcast_params_type opcode,
 995                                  unsigned char *mac, int num_macs)
 996 {
 997         struct qed_filter_params filter_cmd;
 998         int i;
 999
1000         memset(&filter_cmd, 0, sizeof(filter_cmd));
1001         filter_cmd.type = QED_FILTER_TYPE_MCAST;
1002         filter_cmd.filter.mcast.type = opcode;
1003         filter_cmd.filter.mcast.num = num_macs;
1004
1005         for (i = 0; i < num_macs; i++, mac += ETH_ALEN)
1006                 ether_addr_copy(filter_cmd.filter.mcast.mac[i], mac);
1007
1008         return edev->ops->filter_config(edev->cdev, &filter_cmd);
1009 }
1010
1011 int qede_set_mac_addr(struct net_device *ndev, void *p)
1012 {
1013         struct qede_dev *edev = netdev_priv(ndev);
1014         struct sockaddr *addr = p;
1015         int rc;
1016
1017         ASSERT_RTNL(); /* @@@TBD To be removed */
1018
1019         DP_INFO(edev, "Set_mac_addr called\n");
1020
1021         if (!is_valid_ether_addr(addr->sa_data)) {
1022                 DP_NOTICE(edev, "The MAC address is not valid\n");
1023                 return -EFAULT;
1024         }
1025
1026         if (!edev->ops->check_mac(edev->cdev, addr->sa_data)) {
1027                 DP_NOTICE(edev, "qed prevents setting MAC\n");
1028                 return -EINVAL;
1029         }
1030
1031         ether_addr_copy(ndev->dev_addr, addr->sa_data);
1032
1033         if (!netif_running(ndev))  {
1034                 DP_NOTICE(edev, "The device is currently down\n");
1035                 return 0;
1036         }
1037
1038         /* Remove the previous primary mac */
1039         rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
1040                                    edev->primary_mac);
1041         if (rc)
1042                 return rc;
1043
1044         edev->ops->common->update_mac(edev->cdev, addr->sa_data);
1045
1046         /* Add MAC filter according to the new unicast HW MAC address */
1047         ether_addr_copy(edev->primary_mac, ndev->dev_addr);
1048         return qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
1049                                       edev->primary_mac);
1050 }
1051
1052 static int
1053 qede_configure_mcast_filtering(struct net_device *ndev,
1054                                enum qed_filter_rx_mode_type *accept_flags)
1055 {
1056         struct qede_dev *edev = netdev_priv(ndev);
1057         unsigned char *mc_macs, *temp;
1058         struct netdev_hw_addr *ha;
1059         int rc = 0, mc_count;
1060         size_t size;
1061
1062         size = 64 * ETH_ALEN;
1063
1064         mc_macs = kzalloc(size, GFP_KERNEL);
1065         if (!mc_macs) {
1066                 DP_NOTICE(edev,
1067                           "Failed to allocate memory for multicast MACs\n");
1068                 rc = -ENOMEM;
1069                 goto exit;
1070         }
1071
1072         temp = mc_macs;
1073
1074         /* Remove all previously configured MAC filters */
1075         rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
1076                                    mc_macs, 1);
1077         if (rc)
1078                 goto exit;
1079
1080         netif_addr_lock_bh(ndev);
1081
1082         mc_count = netdev_mc_count(ndev);
1083         if (mc_count < 64) {
1084                 netdev_for_each_mc_addr(ha, ndev) {
1085                         ether_addr_copy(temp, ha->addr);
1086                         temp += ETH_ALEN;
1087                 }
1088         }
1089
1090         netif_addr_unlock_bh(ndev);
1091
1092         /* Check for all multicast @@@TBD resource allocation */
1093         if ((ndev->flags & IFF_ALLMULTI) || (mc_count > 64)) {
1094                 if (*accept_flags == QED_FILTER_RX_MODE_TYPE_REGULAR)
1095                         *accept_flags = QED_FILTER_RX_MODE_TYPE_MULTI_PROMISC;
1096         } else {
1097                 /* Add all multicast MAC filters */
1098                 rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
1099                                            mc_macs, mc_count);
1100         }
1101
1102 exit:
1103         kfree(mc_macs);
1104         return rc;
1105 }
1106
1107 void qede_set_rx_mode(struct net_device *ndev)
1108 {
1109         struct qede_dev *edev = netdev_priv(ndev);
1110
1111         set_bit(QEDE_SP_RX_MODE, &edev->sp_flags);
1112         schedule_delayed_work(&edev->sp_task, 0);
1113 }
1114
1115 /* Must be called with qede_lock held */
1116 void qede_config_rx_mode(struct net_device *ndev)
1117 {
1118         enum qed_filter_rx_mode_type accept_flags;
1119         struct qede_dev *edev = netdev_priv(ndev);
1120         struct qed_filter_params rx_mode;
1121         unsigned char *uc_macs, *temp;
1122         struct netdev_hw_addr *ha;
1123         int rc, uc_count;
1124         size_t size;
1125
1126         netif_addr_lock_bh(ndev);
1127
1128         uc_count = netdev_uc_count(ndev);
1129         size = uc_count * ETH_ALEN;
1130
1131         uc_macs = kzalloc(size, GFP_ATOMIC);
1132         if (!uc_macs) {
1133                 DP_NOTICE(edev, "Failed to allocate memory for unicast MACs\n");
1134                 netif_addr_unlock_bh(ndev);
1135                 return;
1136         }
1137
1138         temp = uc_macs;
1139         netdev_for_each_uc_addr(ha, ndev) {
1140                 ether_addr_copy(temp, ha->addr);
1141                 temp += ETH_ALEN;
1142         }
1143
1144         netif_addr_unlock_bh(ndev);
1145
1146         /* Configure the struct for the Rx mode */
1147         memset(&rx_mode, 0, sizeof(struct qed_filter_params));
1148         rx_mode.type = QED_FILTER_TYPE_RX_MODE;
1149
1150         /* Remove all previous unicast secondary macs and multicast macs
1151          * (configrue / leave the primary mac)
1152          */
1153         rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_REPLACE,
1154                                    edev->primary_mac);
1155         if (rc)
1156                 goto out;
1157
1158         /* Check for promiscuous */
1159         if (ndev->flags & IFF_PROMISC)
1160                 accept_flags = QED_FILTER_RX_MODE_TYPE_PROMISC;
1161         else
1162                 accept_flags = QED_FILTER_RX_MODE_TYPE_REGULAR;
1163
1164         /* Configure all filters regardless, in case promisc is rejected */
1165         if (uc_count < edev->dev_info.num_mac_filters) {
1166                 int i;
1167
1168                 temp = uc_macs;
1169                 for (i = 0; i < uc_count; i++) {
1170                         rc = qede_set_ucast_rx_mac(edev,
1171                                                    QED_FILTER_XCAST_TYPE_ADD,
1172                                                    temp);
1173                         if (rc)
1174                                 goto out;
1175
1176                         temp += ETH_ALEN;
1177                 }
1178         } else {
1179                 accept_flags = QED_FILTER_RX_MODE_TYPE_PROMISC;
1180         }
1181
1182         rc = qede_configure_mcast_filtering(ndev, &accept_flags);
1183         if (rc)
1184                 goto out;
1185
1186         /* take care of VLAN mode */
1187         if (ndev->flags & IFF_PROMISC) {
1188                 qede_config_accept_any_vlan(edev, true);
1189         } else if (!edev->non_configured_vlans) {
1190                 /* It's possible that accept_any_vlan mode is set due to a
1191                  * previous setting of IFF_PROMISC. If vlan credits are
1192                  * sufficient, disable accept_any_vlan.
1193                  */
1194                 qede_config_accept_any_vlan(edev, false);
1195         }
1196
1197         rx_mode.filter.accept_flags = accept_flags;
1198         edev->ops->filter_config(edev->cdev, &rx_mode);
1199 out:
1200         kfree(uc_macs);
1201 }