drivers/net/octeontx2/otx2_vlan.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #include <rte_malloc.h>
   6 #include <rte_tailq.h>
   7
   8 #include "otx2_ethdev.h"
   9 #include "otx2_flow.h"
  10
  11
  12 #define VLAN_ID_MATCH   0x1
  13 #define VTAG_F_MATCH    0x2
  14 #define MAC_ADDR_MATCH  0x4
  15 #define QINQ_F_MATCH    0x8
  16 #define VLAN_DROP       0x10
  17 #define DEF_F_ENTRY     0x20
  18
  19 enum vtag_cfg_dir {
  20         VTAG_TX,
  21         VTAG_RX
  22 };
  23
  24 static int
  25 __rte_unused nix_vlan_mcam_enb_dis(struct otx2_eth_dev *dev,
  26                                    uint32_t entry, const int enable)
  27 {
  28         struct npc_mcam_ena_dis_entry_req *req;
  29         struct otx2_mbox *mbox = dev->mbox;
  30         int rc = -EINVAL;
  31
  32         if (enable)
  33                 req = otx2_mbox_alloc_msg_npc_mcam_ena_entry(mbox);
  34         else
  35                 req = otx2_mbox_alloc_msg_npc_mcam_dis_entry(mbox);
  36
  37         req->entry = entry;
  38
  39         rc = otx2_mbox_process_msg(mbox, NULL);
  40         return rc;
  41 }
  42
  43 static void
  44 nix_set_rx_vlan_action(struct rte_eth_dev *eth_dev,
  45                     struct mcam_entry *entry, bool qinq, bool drop)
  46 {
  47         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
  48         int pcifunc = otx2_pfvf_func(dev->pf, dev->vf);
  49         uint64_t action = 0, vtag_action = 0;
  50
  51         action = NIX_RX_ACTIONOP_UCAST;
  52
  53         if (eth_dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
  54                 action = NIX_RX_ACTIONOP_RSS;
  55                 action |= (uint64_t)(dev->rss_info.alg_idx) << 56;
  56         }
  57
  58         action |= (uint64_t)pcifunc << 4;
  59         entry->action = action;
  60
  61         if (drop) {
  62                 entry->action &= ~((uint64_t)0xF);
  63                 entry->action |= NIX_RX_ACTIONOP_DROP;
  64                 return;
  65         }
  66
  67         if (!qinq) {
  68                 /* VTAG0 fields denote CTAG in single vlan case */
  69                 vtag_action |= (NIX_RX_VTAGACTION_VTAG_VALID << 15);
  70                 vtag_action |= (NPC_LID_LB << 8);
  71                 vtag_action |= NIX_RX_VTAGACTION_VTAG0_RELPTR;
  72         } else {
  73                 /* VTAG0 & VTAG1 fields denote CTAG & STAG respectively */
  74                 vtag_action |= (NIX_RX_VTAGACTION_VTAG_VALID << 15);
  75                 vtag_action |= (NPC_LID_LB << 8);
  76                 vtag_action |= NIX_RX_VTAGACTION_VTAG1_RELPTR;
  77                 vtag_action |= (NIX_RX_VTAGACTION_VTAG_VALID << 47);
  78                 vtag_action |= ((uint64_t)(NPC_LID_LB) << 40);
  79                 vtag_action |= (NIX_RX_VTAGACTION_VTAG0_RELPTR << 32);
  80         }
  81
  82         entry->vtag_action = vtag_action;
  83 }
  84
  85 static int
  86 nix_vlan_mcam_free(struct otx2_eth_dev *dev, uint32_t entry)
  87 {
  88         struct npc_mcam_free_entry_req *req;
  89         struct otx2_mbox *mbox = dev->mbox;
  90         int rc = -EINVAL;
  91
  92         req = otx2_mbox_alloc_msg_npc_mcam_free_entry(mbox);
  93         req->entry = entry;
  94
  95         rc = otx2_mbox_process_msg(mbox, NULL);
  96         return rc;
  97 }
  98
  99 static int
 100 nix_vlan_mcam_write(struct rte_eth_dev *eth_dev, uint16_t ent_idx,
 101                     struct mcam_entry *entry, uint8_t intf, uint8_t ena)
 102 {
 103         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 104         struct npc_mcam_write_entry_req *req;
 105         struct otx2_mbox *mbox = dev->mbox;
 106         struct msghdr *rsp;
 107         int rc = -EINVAL;
 108
 109         req = otx2_mbox_alloc_msg_npc_mcam_write_entry(mbox);
 110
 111         req->entry = ent_idx;
 112         req->intf = intf;
 113         req->enable_entry = ena;
 114         memcpy(&req->entry_data, entry, sizeof(struct mcam_entry));
 115
 116         rc = otx2_mbox_process_msg(mbox, (void *)&rsp);
 117         return rc;
 118 }
 119
 120 static int
 121 nix_vlan_mcam_alloc_and_write(struct rte_eth_dev *eth_dev,
 122                               struct mcam_entry *entry,
 123                               uint8_t intf, bool drop)
 124 {
 125         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 126         struct npc_mcam_alloc_and_write_entry_req *req;
 127         struct npc_mcam_alloc_and_write_entry_rsp *rsp;
 128         struct otx2_mbox *mbox = dev->mbox;
 129         int rc = -EINVAL;
 130
 131         req = otx2_mbox_alloc_msg_npc_mcam_alloc_and_write_entry(mbox);
 132
 133         if (intf == NPC_MCAM_RX) {
 134                 if (!drop && dev->vlan_info.def_rx_mcam_idx) {
 135                         req->priority = NPC_MCAM_HIGHER_PRIO;
 136                         req->ref_entry = dev->vlan_info.def_rx_mcam_idx;
 137                 } else if (drop && dev->vlan_info.qinq_mcam_idx) {
 138                         req->priority = NPC_MCAM_LOWER_PRIO;
 139                         req->ref_entry = dev->vlan_info.qinq_mcam_idx;
 140                 } else {
 141                         req->priority = NPC_MCAM_ANY_PRIO;
 142                         req->ref_entry = 0;
 143                 }
 144         } else {
 145                 req->priority = NPC_MCAM_ANY_PRIO;
 146                 req->ref_entry = 0;
 147         }
 148
 149         req->intf = intf;
 150         req->enable_entry = 1;
 151         memcpy(&req->entry_data, entry, sizeof(struct mcam_entry));
 152
 153         rc = otx2_mbox_process_msg(mbox, (void *)&rsp);
 154         if (rc)
 155                 return rc;
 156
 157         return rsp->entry;
 158 }
 159
 160 static void
 161 nix_vlan_update_mac(struct rte_eth_dev *eth_dev, int mcam_index,
 162                            int enable)
 163 {
 164         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 165         struct vlan_mkex_info *mkex = &dev->vlan_info.mkex;
 166         volatile uint8_t *key_data, *key_mask;
 167         struct npc_mcam_read_entry_req *req;
 168         struct npc_mcam_read_entry_rsp *rsp;
 169         struct otx2_mbox *mbox = dev->mbox;
 170         uint64_t mcam_data, mcam_mask;
 171         struct mcam_entry entry;
 172         uint8_t intf, mcam_ena;
 173         int idx, rc = -EINVAL;
 174         uint8_t *mac_addr;
 175
 176         memset(&entry, 0, sizeof(struct mcam_entry));
 177
 178         /* Read entry first */
 179         req = otx2_mbox_alloc_msg_npc_mcam_read_entry(mbox);
 180
 181         req->entry = mcam_index;
 182
 183         rc = otx2_mbox_process_msg(mbox, (void *)&rsp);
 184         if (rc) {
 185                 otx2_err("Failed to read entry %d", mcam_index);
 186                 return;
 187         }
 188
 189         entry = rsp->entry_data;
 190         intf = rsp->intf;
 191         mcam_ena = rsp->enable;
 192
 193         /* Update mcam address */
 194         key_data = (volatile uint8_t *)entry.kw;
 195         key_mask = (volatile uint8_t *)entry.kw_mask;
 196
 197         if (enable) {
 198                 mcam_mask = 0;
 199                 otx2_mbox_memcpy(key_mask + mkex->la_xtract.key_off,
 200                                  &mcam_mask, mkex->la_xtract.len + 1);
 201
 202         } else {
 203                 mcam_data = 0ULL;
 204                 mac_addr = dev->mac_addr;
 205                 for (idx = RTE_ETHER_ADDR_LEN - 1; idx >= 0; idx--)
 206                         mcam_data |= ((uint64_t)*mac_addr++) << (8 * idx);
 207
 208                 mcam_mask = BIT_ULL(48) - 1;
 209
 210                 otx2_mbox_memcpy(key_data + mkex->la_xtract.key_off,
 211                                  &mcam_data, mkex->la_xtract.len + 1);
 212                 otx2_mbox_memcpy(key_mask + mkex->la_xtract.key_off,
 213                                  &mcam_mask, mkex->la_xtract.len + 1);
 214         }
 215
 216         /* Write back the mcam entry */
 217         rc = nix_vlan_mcam_write(eth_dev, mcam_index,
 218                                  &entry, intf, mcam_ena);
 219         if (rc) {
 220                 otx2_err("Failed to write entry %d", mcam_index);
 221                 return;
 222         }
 223 }
 224
 225 void
 226 otx2_nix_vlan_update_promisc(struct rte_eth_dev *eth_dev, int enable)
 227 {
 228         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 229         struct otx2_vlan_info *vlan = &dev->vlan_info;
 230         struct vlan_entry *entry;
 231
 232         /* Already in required mode */
 233         if (enable == vlan->promisc_on)
 234                 return;
 235
 236         /* Update default rx entry */
 237         if (vlan->def_rx_mcam_idx)
 238                 nix_vlan_update_mac(eth_dev, vlan->def_rx_mcam_idx, enable);
 239
 240         /* Update all other rx filter entries */
 241         TAILQ_FOREACH(entry, &vlan->fltr_tbl, next)
 242                 nix_vlan_update_mac(eth_dev, entry->mcam_idx, enable);
 243
 244         vlan->promisc_on = enable;
 245 }
 246
 247 /* Configure mcam entry with required MCAM search rules */
 248 static int
 249 nix_vlan_mcam_config(struct rte_eth_dev *eth_dev,
 250                      uint16_t vlan_id, uint16_t flags)
 251 {
 252         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 253         struct vlan_mkex_info *mkex = &dev->vlan_info.mkex;
 254         volatile uint8_t *key_data, *key_mask;
 255         uint64_t mcam_data, mcam_mask;
 256         struct mcam_entry entry;
 257         uint8_t *mac_addr;
 258         int idx, kwi = 0;
 259
 260         memset(&entry, 0, sizeof(struct mcam_entry));
 261         key_data = (volatile uint8_t *)entry.kw;
 262         key_mask = (volatile uint8_t *)entry.kw_mask;
 263
 264         /* Channel base extracted to KW0[11:0] */
 265         entry.kw[kwi] = dev->rx_chan_base;
 266         entry.kw_mask[kwi] = BIT_ULL(12) - 1;
 267
 268         /* Adds vlan_id & LB CTAG flag to MCAM KW */
 269         if (flags & VLAN_ID_MATCH) {
 270                 entry.kw[kwi] |= NPC_LT_LB_CTAG << mkex->lb_lt_offset;
 271                 entry.kw_mask[kwi] |= 0xFULL << mkex->lb_lt_offset;
 272
 273                 mcam_data = (vlan_id << 16);
 274                 mcam_mask = (BIT_ULL(16) - 1) << 16;
 275                 otx2_mbox_memcpy(key_data + mkex->lb_xtract.key_off,
 276                                      &mcam_data, mkex->lb_xtract.len + 1);
 277                 otx2_mbox_memcpy(key_mask + mkex->lb_xtract.key_off,
 278                                      &mcam_mask, mkex->lb_xtract.len + 1);
 279         }
 280
 281         /* Adds LB STAG flag to MCAM KW */
 282         if (flags & QINQ_F_MATCH) {
 283                 entry.kw[kwi] |= NPC_LT_LB_STAG << mkex->lb_lt_offset;
 284                 entry.kw_mask[kwi] |= 0xFULL << mkex->lb_lt_offset;
 285         }
 286
 287         /* Adds LB CTAG & LB STAG flags to MCAM KW */
 288         if (flags & VTAG_F_MATCH) {
 289                 entry.kw[kwi] |= (NPC_LT_LB_CTAG | NPC_LT_LB_STAG)
 290                                                         << mkex->lb_lt_offset;
 291                 entry.kw_mask[kwi] |= (NPC_LT_LB_CTAG & NPC_LT_LB_STAG)
 292                                                         << mkex->lb_lt_offset;
 293         }
 294
 295         /* Adds port MAC address to MCAM KW */
 296         if (flags & MAC_ADDR_MATCH) {
 297                 mcam_data = 0ULL;
 298                 mac_addr = dev->mac_addr;
 299                 for (idx = RTE_ETHER_ADDR_LEN - 1; idx >= 0; idx--)
 300                         mcam_data |= ((uint64_t)*mac_addr++) << (8 * idx);
 301
 302                 mcam_mask = BIT_ULL(48) - 1;
 303                 otx2_mbox_memcpy(key_data + mkex->la_xtract.key_off,
 304                                      &mcam_data, mkex->la_xtract.len + 1);
 305                 otx2_mbox_memcpy(key_mask + mkex->la_xtract.key_off,
 306                                      &mcam_mask, mkex->la_xtract.len + 1);
 307         }
 308
 309         /* VLAN_DROP: for drop action for all vlan packets when filter is on.
 310          * For QinQ, enable vtag action for both outer & inner tags
 311          */
 312         if (flags & VLAN_DROP)
 313                 nix_set_rx_vlan_action(eth_dev, &entry, false, true);
 314         else if (flags & QINQ_F_MATCH)
 315                 nix_set_rx_vlan_action(eth_dev, &entry, true, false);
 316         else
 317                 nix_set_rx_vlan_action(eth_dev, &entry, false, false);
 318
 319         if (flags & DEF_F_ENTRY)
 320                 dev->vlan_info.def_rx_mcam_ent = entry;
 321
 322         return nix_vlan_mcam_alloc_and_write(eth_dev, &entry, NIX_INTF_RX,
 323                                              flags & VLAN_DROP);
 324 }
 325
 326 /* Installs/Removes/Modifies default rx entry */
 327 static int
 328 nix_vlan_handle_default_rx_entry(struct rte_eth_dev *eth_dev, bool strip,
 329                                  bool filter, bool enable)
 330 {
 331         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 332         struct otx2_vlan_info *vlan = &dev->vlan_info;
 333         uint16_t flags = 0;
 334         int mcam_idx, rc;
 335
 336         /* Use default mcam entry to either drop vlan traffic when
 337          * vlan filter is on or strip vtag when strip is enabled.
 338          * Allocate default entry which matches port mac address
 339          * and vtag(ctag/stag) flags with drop action.
 340          */
 341         if (!vlan->def_rx_mcam_idx) {
 342                 if (!eth_dev->data->promiscuous)
 343                         flags = MAC_ADDR_MATCH;
 344
 345                 if (filter && enable)
 346                         flags |= VTAG_F_MATCH | VLAN_DROP;
 347                 else if (strip && enable)
 348                         flags |= VTAG_F_MATCH;
 349                 else
 350                         return 0;
 351
 352                 flags |= DEF_F_ENTRY;
 353
 354                 mcam_idx = nix_vlan_mcam_config(eth_dev, 0, flags);
 355                 if (mcam_idx < 0) {
 356                         otx2_err("Failed to config vlan mcam");
 357                         return -mcam_idx;
 358                 }
 359
 360                 vlan->def_rx_mcam_idx = mcam_idx;
 361                 return 0;
 362         }
 363
 364         /* Filter is already enabled, so packets would be dropped anyways. No
 365          * processing needed for enabling strip wrt mcam entry.
 366          */
 367
 368         /* Filter disable request */
 369         if (vlan->filter_on && filter && !enable) {
 370                 vlan->def_rx_mcam_ent.action &= ~((uint64_t)0xF);
 371
 372                 /* Free default rx entry only when
 373                  * 1. strip is not on and
 374                  * 2. qinq entry is allocated before default entry.
 375                  */
 376                 if (vlan->strip_on ||
 377                     (vlan->qinq_on && !vlan->qinq_before_def)) {
 378                         if (eth_dev->data->dev_conf.rxmode.mq_mode ==
 379                                                                 ETH_MQ_RX_RSS)
 380                                 vlan->def_rx_mcam_ent.action |=
 381                                                         NIX_RX_ACTIONOP_RSS;
 382                         else
 383                                 vlan->def_rx_mcam_ent.action |=
 384                                                         NIX_RX_ACTIONOP_UCAST;
 385                         return nix_vlan_mcam_write(eth_dev,
 386                                                    vlan->def_rx_mcam_idx,
 387                                                    &vlan->def_rx_mcam_ent,
 388                                                    NIX_INTF_RX, 1);
 389                 } else {
 390                         rc = nix_vlan_mcam_free(dev, vlan->def_rx_mcam_idx);
 391                         if (rc)
 392                                 return rc;
 393                         vlan->def_rx_mcam_idx = 0;
 394                 }
 395         }
 396
 397         /* Filter enable request */
 398         if (!vlan->filter_on && filter && enable) {
 399                 vlan->def_rx_mcam_ent.action &= ~((uint64_t)0xF);
 400                 vlan->def_rx_mcam_ent.action |= NIX_RX_ACTIONOP_DROP;
 401                 return nix_vlan_mcam_write(eth_dev, vlan->def_rx_mcam_idx,
 402                                    &vlan->def_rx_mcam_ent, NIX_INTF_RX, 1);
 403         }
 404
 405         /* Strip disable request */
 406         if (vlan->strip_on && strip && !enable) {
 407                 if (!vlan->filter_on &&
 408                     !(vlan->qinq_on && !vlan->qinq_before_def)) {
 409                         rc = nix_vlan_mcam_free(dev, vlan->def_rx_mcam_idx);
 410                         if (rc)
 411                                 return rc;
 412                         vlan->def_rx_mcam_idx = 0;
 413                 }
 414         }
 415
 416         return 0;
 417 }
 418
 419 /* Configure vlan stripping on or off */
 420 static int
 421 nix_vlan_hw_strip(struct rte_eth_dev *eth_dev, const uint8_t enable)
 422 {
 423         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 424         struct otx2_mbox *mbox = dev->mbox;
 425         struct nix_vtag_config *vtag_cfg;
 426         int rc = -EINVAL;
 427
 428         rc = nix_vlan_handle_default_rx_entry(eth_dev, true, false, enable);
 429         if (rc) {
 430                 otx2_err("Failed to config default rx entry");
 431                 return rc;
 432         }
 433
 434         vtag_cfg = otx2_mbox_alloc_msg_nix_vtag_cfg(mbox);
 435         /* cfg_type = 1 for rx vlan cfg */
 436         vtag_cfg->cfg_type = VTAG_RX;
 437
 438         if (enable)
 439                 vtag_cfg->rx.strip_vtag = 1;
 440         else
 441                 vtag_cfg->rx.strip_vtag = 0;
 442
 443         /* Always capture */
 444         vtag_cfg->rx.capture_vtag = 1;
 445         vtag_cfg->vtag_size = NIX_VTAGSIZE_T4;
 446         /* Use rx vtag type index[0] for now */
 447         vtag_cfg->rx.vtag_type = 0;
 448
 449         rc = otx2_mbox_process(mbox);
 450         if (rc)
 451                 return rc;
 452
 453         dev->vlan_info.strip_on = enable;
 454         return rc;
 455 }
 456
 457 /* Configure vlan filtering on or off for all vlans if vlan_id == 0 */
 458 static int
 459 nix_vlan_hw_filter(struct rte_eth_dev *eth_dev, const uint8_t enable,
 460                    uint16_t vlan_id)
 461 {
 462         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 463         int rc = -EINVAL;
 464
 465         if (!vlan_id && enable) {
 466                 rc = nix_vlan_handle_default_rx_entry(eth_dev, false, true,
 467                                                       enable);
 468                 if (rc) {
 469                         otx2_err("Failed to config vlan mcam");
 470                         return rc;
 471                 }
 472                 dev->vlan_info.filter_on = enable;
 473                 return 0;
 474         }
 475
 476         if (!vlan_id && !enable) {
 477                 rc = nix_vlan_handle_default_rx_entry(eth_dev, false, true,
 478                                                       enable);
 479                 if (rc) {
 480                         otx2_err("Failed to config vlan mcam");
 481                         return rc;
 482                 }
 483                 dev->vlan_info.filter_on = enable;
 484                 return 0;
 485         }
 486
 487         return 0;
 488 }
 489
 490 /* Configure double vlan(qinq) on or off */
 491 static int
 492 otx2_nix_config_double_vlan(struct rte_eth_dev *eth_dev,
 493                             const uint8_t enable)
 494 {
 495         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 496         struct otx2_vlan_info *vlan_info;
 497         int mcam_idx;
 498         int rc;
 499
 500         vlan_info = &dev->vlan_info;
 501
 502         if (!enable) {
 503                 if (!vlan_info->qinq_mcam_idx)
 504                         return 0;
 505
 506                 rc = nix_vlan_mcam_free(dev, vlan_info->qinq_mcam_idx);
 507                 if (rc)
 508                         return rc;
 509
 510                 vlan_info->qinq_mcam_idx = 0;
 511                 dev->vlan_info.qinq_on = 0;
 512                 vlan_info->qinq_before_def = 0;
 513                 return 0;
 514         }
 515
 516         if (eth_dev->data->promiscuous)
 517                 mcam_idx = nix_vlan_mcam_config(eth_dev, 0, QINQ_F_MATCH);
 518         else
 519                 mcam_idx = nix_vlan_mcam_config(eth_dev, 0,
 520                                                 QINQ_F_MATCH | MAC_ADDR_MATCH);
 521         if (mcam_idx < 0)
 522                 return mcam_idx;
 523
 524         if (!vlan_info->def_rx_mcam_idx)
 525                 vlan_info->qinq_before_def = 1;
 526
 527         vlan_info->qinq_mcam_idx = mcam_idx;
 528         dev->vlan_info.qinq_on = 1;
 529         return 0;
 530 }
 531
 532 int
 533 otx2_nix_vlan_offload_set(struct rte_eth_dev *eth_dev, int mask)
 534 {
 535         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 536         uint64_t offloads = dev->rx_offloads;
 537         struct rte_eth_rxmode *rxmode;
 538         int rc;
 539
 540         rxmode = &eth_dev->data->dev_conf.rxmode;
 541
 542         if (mask & ETH_VLAN_EXTEND_MASK) {
 543                 otx2_err("Extend offload not supported");
 544                 return -ENOTSUP;
 545         }
 546
 547         if (mask & ETH_VLAN_STRIP_MASK) {
 548                 if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP) {
 549                         offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
 550                         rc = nix_vlan_hw_strip(eth_dev, true);
 551                 } else {
 552                         offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
 553                         rc = nix_vlan_hw_strip(eth_dev, false);
 554                 }
 555                 if (rc)
 556                         goto done;
 557         }
 558
 559         if (mask & ETH_VLAN_FILTER_MASK) {
 560                 if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_FILTER) {
 561                         offloads |= DEV_RX_OFFLOAD_VLAN_FILTER;
 562                         rc = nix_vlan_hw_filter(eth_dev, true, 0);
 563                 } else {
 564                         offloads &= ~DEV_RX_OFFLOAD_VLAN_FILTER;
 565                         rc = nix_vlan_hw_filter(eth_dev, false, 0);
 566                 }
 567                 if (rc)
 568                         goto done;
 569         }
 570
 571         if (rxmode->offloads & DEV_RX_OFFLOAD_QINQ_STRIP) {
 572                 if (!dev->vlan_info.qinq_on) {
 573                         offloads |= DEV_RX_OFFLOAD_QINQ_STRIP;
 574                         rc = otx2_nix_config_double_vlan(eth_dev, true);
 575                         if (rc)
 576                                 goto done;
 577                 }
 578         } else {
 579                 if (dev->vlan_info.qinq_on) {
 580                         offloads &= ~DEV_RX_OFFLOAD_QINQ_STRIP;
 581                         rc = otx2_nix_config_double_vlan(eth_dev, false);
 582                         if (rc)
 583                                 goto done;
 584                 }
 585         }
 586
 587         if (offloads & (DEV_RX_OFFLOAD_VLAN_STRIP |
 588                         DEV_RX_OFFLOAD_QINQ_STRIP)) {
 589                 dev->rx_offloads |= offloads;
 590                 dev->rx_offload_flags |= NIX_RX_OFFLOAD_VLAN_STRIP_F;
 591         }
 592
 593 done:
 594         return rc;
 595 }
 596
 597 static int
 598 nix_vlan_rx_mkex_offset(uint64_t mask)
 599 {
 600         int nib_count = 0;
 601
 602         while (mask) {
 603                 nib_count += mask & 1;
 604                 mask >>= 1;
 605         }
 606
 607         return nib_count * 4;
 608 }
 609
 610 static int
 611 nix_vlan_get_mkex_info(struct otx2_eth_dev *dev)
 612 {
 613         struct vlan_mkex_info *mkex = &dev->vlan_info.mkex;
 614         struct otx2_npc_flow_info *npc = &dev->npc_flow;
 615         struct npc_xtract_info *x_info = NULL;
 616         uint64_t rx_keyx;
 617         otx2_dxcfg_t *p;
 618         int rc = -EINVAL;
 619
 620         if (npc == NULL) {
 621                 otx2_err("Missing npc mkex configuration");
 622                 return rc;
 623         }
 624
 625 #define NPC_KEX_CHAN_NIBBLE_ENA                 0x7ULL
 626 #define NPC_KEX_LB_LTYPE_NIBBLE_ENA             0x1000ULL
 627 #define NPC_KEX_LB_LTYPE_NIBBLE_MASK            0xFFFULL
 628
 629         rx_keyx = npc->keyx_supp_nmask[NPC_MCAM_RX];
 630         if ((rx_keyx & NPC_KEX_CHAN_NIBBLE_ENA) != NPC_KEX_CHAN_NIBBLE_ENA)
 631                 return rc;
 632
 633         if ((rx_keyx & NPC_KEX_LB_LTYPE_NIBBLE_ENA) !=
 634             NPC_KEX_LB_LTYPE_NIBBLE_ENA)
 635                 return rc;
 636
 637         mkex->lb_lt_offset =
 638             nix_vlan_rx_mkex_offset(rx_keyx & NPC_KEX_LB_LTYPE_NIBBLE_MASK);
 639
 640         p = &npc->prx_dxcfg;
 641         x_info = &(*p)[NPC_MCAM_RX][NPC_LID_LA][NPC_LT_LA_ETHER].xtract[0];
 642         memcpy(&mkex->la_xtract, x_info, sizeof(struct npc_xtract_info));
 643         x_info = &(*p)[NPC_MCAM_RX][NPC_LID_LB][NPC_LT_LB_CTAG].xtract[0];
 644         memcpy(&mkex->lb_xtract, x_info, sizeof(struct npc_xtract_info));
 645
 646         return 0;
 647 }
 648
 649 int
 650 otx2_nix_vlan_offload_init(struct rte_eth_dev *eth_dev)
 651 {
 652         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 653         int rc, mask;
 654
 655         /* Port initialized for first time or restarted */
 656         if (!dev->configured) {
 657                 rc = nix_vlan_get_mkex_info(dev);
 658                 if (rc) {
 659                         otx2_err("Failed to get vlan mkex info rc=%d", rc);
 660                         return rc;
 661                 }
 662
 663                 TAILQ_INIT(&dev->vlan_info.fltr_tbl);
 664         }
 665
 666         mask =
 667             ETH_VLAN_STRIP_MASK | ETH_VLAN_FILTER_MASK;
 668         rc = otx2_nix_vlan_offload_set(eth_dev, mask);
 669         if (rc) {
 670                 otx2_err("Failed to set vlan offload rc=%d", rc);
 671                 return rc;
 672         }
 673
 674         return 0;
 675 }
 676
 677 int
 678 otx2_nix_vlan_fini(struct rte_eth_dev *eth_dev)
 679 {
 680         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 681         struct otx2_vlan_info *vlan = &dev->vlan_info;
 682         int rc;
 683
 684         if (!dev->configured) {
 685                 if (vlan->def_rx_mcam_idx) {
 686                         rc = nix_vlan_mcam_free(dev, vlan->def_rx_mcam_idx);
 687                         if (rc)
 688                                 return rc;
 689                 }
 690         }
 691
 692         otx2_nix_config_double_vlan(eth_dev, false);
 693         vlan->def_rx_mcam_idx = 0;
 694         return 0;
 695 }