drivers/net/cnxk/cnxk_rte_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2021 Marvell.
   3  */
   4 #include <cnxk_rte_flow.h>
   5
   6 const struct cnxk_rte_flow_term_info term[] = {
   7         [RTE_FLOW_ITEM_TYPE_ETH] = {ROC_NPC_ITEM_TYPE_ETH,
   8                                     sizeof(struct rte_flow_item_eth)},
   9         [RTE_FLOW_ITEM_TYPE_VLAN] = {ROC_NPC_ITEM_TYPE_VLAN,
  10                                      sizeof(struct rte_flow_item_vlan)},
  11         [RTE_FLOW_ITEM_TYPE_E_TAG] = {ROC_NPC_ITEM_TYPE_E_TAG,
  12                                       sizeof(struct rte_flow_item_e_tag)},
  13         [RTE_FLOW_ITEM_TYPE_IPV4] = {ROC_NPC_ITEM_TYPE_IPV4,
  14                                      sizeof(struct rte_flow_item_ipv4)},
  15         [RTE_FLOW_ITEM_TYPE_IPV6] = {ROC_NPC_ITEM_TYPE_IPV6,
  16                                      sizeof(struct rte_flow_item_ipv6)},
  17         [RTE_FLOW_ITEM_TYPE_ARP_ETH_IPV4] = {
  18                 ROC_NPC_ITEM_TYPE_ARP_ETH_IPV4,
  19                 sizeof(struct rte_flow_item_arp_eth_ipv4)},
  20         [RTE_FLOW_ITEM_TYPE_MPLS] = {ROC_NPC_ITEM_TYPE_MPLS,
  21                                      sizeof(struct rte_flow_item_mpls)},
  22         [RTE_FLOW_ITEM_TYPE_ICMP] = {ROC_NPC_ITEM_TYPE_ICMP,
  23                                      sizeof(struct rte_flow_item_icmp)},
  24         [RTE_FLOW_ITEM_TYPE_UDP] = {ROC_NPC_ITEM_TYPE_UDP,
  25                                     sizeof(struct rte_flow_item_udp)},
  26         [RTE_FLOW_ITEM_TYPE_TCP] = {ROC_NPC_ITEM_TYPE_TCP,
  27                                     sizeof(struct rte_flow_item_tcp)},
  28         [RTE_FLOW_ITEM_TYPE_SCTP] = {ROC_NPC_ITEM_TYPE_SCTP,
  29                                      sizeof(struct rte_flow_item_sctp)},
  30         [RTE_FLOW_ITEM_TYPE_ESP] = {ROC_NPC_ITEM_TYPE_ESP,
  31                                     sizeof(struct rte_flow_item_esp)},
  32         [RTE_FLOW_ITEM_TYPE_GRE] = {ROC_NPC_ITEM_TYPE_GRE,
  33                                     sizeof(struct rte_flow_item_gre)},
  34         [RTE_FLOW_ITEM_TYPE_NVGRE] = {ROC_NPC_ITEM_TYPE_NVGRE,
  35                                       sizeof(struct rte_flow_item_nvgre)},
  36         [RTE_FLOW_ITEM_TYPE_VXLAN] = {ROC_NPC_ITEM_TYPE_VXLAN,
  37                                       sizeof(struct rte_flow_item_vxlan)},
  38         [RTE_FLOW_ITEM_TYPE_GTPC] = {ROC_NPC_ITEM_TYPE_GTPC,
  39                                      sizeof(struct rte_flow_item_gtp)},
  40         [RTE_FLOW_ITEM_TYPE_GTPU] = {ROC_NPC_ITEM_TYPE_GTPU,
  41                                      sizeof(struct rte_flow_item_gtp)},
  42         [RTE_FLOW_ITEM_TYPE_GENEVE] = {ROC_NPC_ITEM_TYPE_GENEVE,
  43                                        sizeof(struct rte_flow_item_geneve)},
  44         [RTE_FLOW_ITEM_TYPE_VXLAN_GPE] = {
  45                         ROC_NPC_ITEM_TYPE_VXLAN_GPE,
  46                         sizeof(struct rte_flow_item_vxlan_gpe)},
  47         [RTE_FLOW_ITEM_TYPE_IPV6_EXT] = {ROC_NPC_ITEM_TYPE_IPV6_EXT,
  48                                          sizeof(struct rte_flow_item_ipv6_ext)},
  49         [RTE_FLOW_ITEM_TYPE_VOID] = {ROC_NPC_ITEM_TYPE_VOID, 0},
  50         [RTE_FLOW_ITEM_TYPE_ANY] = {ROC_NPC_ITEM_TYPE_ANY, 0},
  51         [RTE_FLOW_ITEM_TYPE_GRE_KEY] = {ROC_NPC_ITEM_TYPE_GRE_KEY,
  52                                         sizeof(uint32_t)},
  53         [RTE_FLOW_ITEM_TYPE_HIGIG2] = {
  54                 ROC_NPC_ITEM_TYPE_HIGIG2,
  55                 sizeof(struct rte_flow_item_higig2_hdr)}
  56 };
  57
  58 static int
  59 npc_rss_action_validate(struct rte_eth_dev *eth_dev,
  60                         const struct rte_flow_attr *attr,
  61                         const struct rte_flow_action *act)
  62 {
  63         const struct rte_flow_action_rss *rss;
  64
  65         rss = (const struct rte_flow_action_rss *)act->conf;
  66
  67         if (attr->egress) {
  68                 plt_err("No support of RSS in egress");
  69                 return -EINVAL;
  70         }
  71
  72         if (eth_dev->data->dev_conf.rxmode.mq_mode != ETH_MQ_RX_RSS) {
  73                 plt_err("multi-queue mode is disabled");
  74                 return -ENOTSUP;
  75         }
  76
  77         if (!rss || !rss->queue_num) {
  78                 plt_err("no valid queues");
  79                 return -EINVAL;
  80         }
  81
  82         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT) {
  83                 plt_err("non-default RSS hash functions are not supported");
  84                 return -ENOTSUP;
  85         }
  86
  87         if (rss->key_len && rss->key_len > ROC_NIX_RSS_KEY_LEN) {
  88                 plt_err("RSS hash key too large");
  89                 return -ENOTSUP;
  90         }
  91
  92         return 0;
  93 }
  94
  95 static void
  96 npc_rss_flowkey_get(struct cnxk_eth_dev *eth_dev,
  97                     const struct roc_npc_action *rss_action,
  98                     uint32_t *flowkey_cfg)
  99 {
 100         const struct roc_npc_action_rss *rss;
 101
 102         rss = (const struct roc_npc_action_rss *)rss_action->conf;
 103
 104         *flowkey_cfg = cnxk_rss_ethdev_to_nix(eth_dev, rss->types, rss->level);
 105 }
 106
 107 static int
 108 cnxk_map_actions(struct rte_eth_dev *eth_dev, const struct rte_flow_attr *attr,
 109                  const struct rte_flow_action actions[],
 110                  struct roc_npc_action in_actions[], uint32_t *flowkey_cfg)
 111 {
 112         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 113         const struct rte_flow_action_count *act_count;
 114         const struct rte_flow_action_queue *act_q;
 115         int i = 0, rc = 0;
 116         int rq;
 117
 118         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
 119                 switch (actions->type) {
 120                 case RTE_FLOW_ACTION_TYPE_VOID:
 121                         in_actions[i].type = ROC_NPC_ACTION_TYPE_VOID;
 122                         break;
 123
 124                 case RTE_FLOW_ACTION_TYPE_MARK:
 125                         in_actions[i].type = ROC_NPC_ACTION_TYPE_MARK;
 126                         in_actions[i].conf = actions->conf;
 127                         break;
 128
 129                 case RTE_FLOW_ACTION_TYPE_FLAG:
 130                         in_actions[i].type = ROC_NPC_ACTION_TYPE_FLAG;
 131                         break;
 132
 133                 case RTE_FLOW_ACTION_TYPE_COUNT:
 134                         act_count = (const struct rte_flow_action_count *)
 135                                             actions->conf;
 136
 137                         if (act_count->shared == 1) {
 138                                 plt_npc_dbg("Shared counter is not supported");
 139                                 goto err_exit;
 140                         }
 141                         in_actions[i].type = ROC_NPC_ACTION_TYPE_COUNT;
 142                         break;
 143
 144                 case RTE_FLOW_ACTION_TYPE_DROP:
 145                         in_actions[i].type = ROC_NPC_ACTION_TYPE_DROP;
 146                         break;
 147
 148                 case RTE_FLOW_ACTION_TYPE_PF:
 149                         in_actions[i].type = ROC_NPC_ACTION_TYPE_PF;
 150                         break;
 151
 152                 case RTE_FLOW_ACTION_TYPE_VF:
 153                         in_actions[i].type = ROC_NPC_ACTION_TYPE_VF;
 154                         in_actions[i].conf = actions->conf;
 155                         break;
 156
 157                 case RTE_FLOW_ACTION_TYPE_QUEUE:
 158                         act_q = (const struct rte_flow_action_queue *)
 159                                         actions->conf;
 160                         rq = act_q->index;
 161                         if (rq >= eth_dev->data->nb_rx_queues) {
 162                                 plt_npc_dbg("Invalid queue index");
 163                                 goto err_exit;
 164                         }
 165                         in_actions[i].type = ROC_NPC_ACTION_TYPE_QUEUE;
 166                         in_actions[i].conf = actions->conf;
 167                         break;
 168
 169                 case RTE_FLOW_ACTION_TYPE_RSS:
 170                         rc = npc_rss_action_validate(eth_dev, attr, actions);
 171                         if (rc)
 172                                 goto err_exit;
 173                         in_actions[i].type = ROC_NPC_ACTION_TYPE_RSS;
 174                         in_actions[i].conf = actions->conf;
 175                         npc_rss_flowkey_get(dev, &in_actions[i], flowkey_cfg);
 176                         break;
 177
 178                 case RTE_FLOW_ACTION_TYPE_SECURITY:
 179                         in_actions[i].type = ROC_NPC_ACTION_TYPE_SEC;
 180                         break;
 181                 default:
 182                         plt_npc_dbg("Action is not supported = %d",
 183                                     actions->type);
 184                         goto err_exit;
 185                 }
 186                 i++;
 187         }
 188         in_actions[i].type = ROC_NPC_ACTION_TYPE_END;
 189         return 0;
 190
 191 err_exit:
 192         return -EINVAL;
 193 }
 194
 195 static int
 196 cnxk_map_flow_data(struct rte_eth_dev *eth_dev,
 197                    const struct rte_flow_attr *attr,
 198                    const struct rte_flow_item pattern[],
 199                    const struct rte_flow_action actions[],
 200                    struct roc_npc_attr *in_attr,
 201                    struct roc_npc_item_info in_pattern[],
 202                    struct roc_npc_action in_actions[], uint32_t *flowkey_cfg)
 203 {
 204         int i = 0;
 205
 206         in_attr->priority = attr->priority;
 207         in_attr->ingress = attr->ingress;
 208         in_attr->egress = attr->egress;
 209
 210         while (pattern->type != RTE_FLOW_ITEM_TYPE_END) {
 211                 in_pattern[i].spec = pattern->spec;
 212                 in_pattern[i].last = pattern->last;
 213                 in_pattern[i].mask = pattern->mask;
 214                 in_pattern[i].type = term[pattern->type].item_type;
 215                 in_pattern[i].size = term[pattern->type].item_size;
 216                 pattern++;
 217                 i++;
 218         }
 219         in_pattern[i].type = ROC_NPC_ITEM_TYPE_END;
 220
 221         return cnxk_map_actions(eth_dev, attr, actions, in_actions,
 222                                 flowkey_cfg);
 223 }
 224
 225 static int
 226 cnxk_flow_validate(struct rte_eth_dev *eth_dev,
 227                    const struct rte_flow_attr *attr,
 228                    const struct rte_flow_item pattern[],
 229                    const struct rte_flow_action actions[],
 230                    struct rte_flow_error *error)
 231 {
 232         struct roc_npc_item_info in_pattern[ROC_NPC_ITEM_TYPE_END + 1];
 233         struct roc_npc_action in_actions[ROC_NPC_MAX_ACTION_COUNT];
 234         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 235         struct roc_npc *npc = &dev->npc;
 236         struct roc_npc_attr in_attr;
 237         struct roc_npc_flow flow;
 238         uint32_t flowkey_cfg = 0;
 239         int rc;
 240
 241         memset(&flow, 0, sizeof(flow));
 242
 243         rc = cnxk_map_flow_data(eth_dev, attr, pattern, actions, &in_attr,
 244                                 in_pattern, in_actions, &flowkey_cfg);
 245         if (rc) {
 246                 rte_flow_error_set(error, 0, RTE_FLOW_ERROR_TYPE_ACTION_NUM,
 247                                    NULL, "Failed to map flow data");
 248                 return rc;
 249         }
 250
 251         return roc_npc_flow_parse(npc, &in_attr, in_pattern, in_actions, &flow);
 252 }
 253
 254 struct roc_npc_flow *
 255 cnxk_flow_create(struct rte_eth_dev *eth_dev, const struct rte_flow_attr *attr,
 256                  const struct rte_flow_item pattern[],
 257                  const struct rte_flow_action actions[],
 258                  struct rte_flow_error *error)
 259 {
 260         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 261         struct roc_npc_item_info in_pattern[ROC_NPC_ITEM_TYPE_END + 1];
 262         struct roc_npc_action in_actions[ROC_NPC_MAX_ACTION_COUNT];
 263         struct roc_npc *npc = &dev->npc;
 264         struct roc_npc_attr in_attr;
 265         struct roc_npc_flow *flow;
 266         int errcode = 0;
 267         int rc;
 268
 269         rc = cnxk_map_flow_data(eth_dev, attr, pattern, actions, &in_attr,
 270                                 in_pattern, in_actions,
 271                                 &npc->flowkey_cfg_state);
 272         if (rc) {
 273                 rte_flow_error_set(error, 0, RTE_FLOW_ERROR_TYPE_ACTION_NUM,
 274                                    NULL, "Failed to map flow data");
 275                 return NULL;
 276         }
 277
 278         flow = roc_npc_flow_create(npc, &in_attr, in_pattern, in_actions,
 279                                    &errcode);
 280         if (errcode != 0) {
 281                 rte_flow_error_set(error, errcode, errcode, NULL,
 282                                    roc_error_msg_get(errcode));
 283                 return NULL;
 284         }
 285
 286         return flow;
 287 }
 288
 289 int
 290 cnxk_flow_destroy(struct rte_eth_dev *eth_dev, struct roc_npc_flow *flow,
 291                   struct rte_flow_error *error)
 292 {
 293         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 294         struct roc_npc *npc = &dev->npc;
 295         int rc;
 296
 297         rc = roc_npc_flow_destroy(npc, flow);
 298         if (rc)
 299                 rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 300                                    NULL, "Flow Destroy failed");
 301         return rc;
 302 }
 303
 304 static int
 305 cnxk_flow_flush(struct rte_eth_dev *eth_dev, struct rte_flow_error *error)
 306 {
 307         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 308         struct roc_npc *npc = &dev->npc;
 309         int rc;
 310
 311         rc = roc_npc_mcam_free_all_resources(npc);
 312         if (rc) {
 313                 rte_flow_error_set(error, EIO, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 314                                    NULL, "Failed to flush filter");
 315                 return -rte_errno;
 316         }
 317
 318         return 0;
 319 }
 320
 321 static int
 322 cnxk_flow_query(struct rte_eth_dev *eth_dev, struct rte_flow *flow,
 323                 const struct rte_flow_action *action, void *data,
 324                 struct rte_flow_error *error)
 325 {
 326         struct roc_npc_flow *in_flow = (struct roc_npc_flow *)flow;
 327         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 328         struct roc_npc *npc = &dev->npc;
 329         struct rte_flow_query_count *query = data;
 330         const char *errmsg = NULL;
 331         int errcode = ENOTSUP;
 332         int rc;
 333
 334         if (action->type != RTE_FLOW_ACTION_TYPE_COUNT) {
 335                 errmsg = "Only COUNT is supported in query";
 336                 goto err_exit;
 337         }
 338
 339         if (in_flow->ctr_id == NPC_COUNTER_NONE) {
 340                 errmsg = "Counter is not available";
 341                 goto err_exit;
 342         }
 343
 344         rc = roc_npc_mcam_read_counter(npc, in_flow->ctr_id, &query->hits);
 345         if (rc != 0) {
 346                 errcode = EIO;
 347                 errmsg = "Error reading flow counter";
 348                 goto err_exit;
 349         }
 350         query->hits_set = 1;
 351         query->bytes_set = 0;
 352
 353         if (query->reset)
 354                 rc = roc_npc_mcam_clear_counter(npc, in_flow->ctr_id);
 355         if (rc != 0) {
 356                 errcode = EIO;
 357                 errmsg = "Error clearing flow counter";
 358                 goto err_exit;
 359         }
 360
 361         return 0;
 362
 363 err_exit:
 364         rte_flow_error_set(error, errcode, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 365                            NULL, errmsg);
 366         return -rte_errno;
 367 }
 368
 369 static int
 370 cnxk_flow_isolate(struct rte_eth_dev *eth_dev __rte_unused,
 371                   int enable __rte_unused, struct rte_flow_error *error)
 372 {
 373         /* If we support, we need to un-install the default mcam
 374          * entry for this port.
 375          */
 376
 377         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 378                            NULL, "Flow isolation not supported");
 379
 380         return -rte_errno;
 381 }
 382
 383 static int
 384 cnxk_flow_dev_dump(struct rte_eth_dev *eth_dev, struct rte_flow *flow,
 385                    FILE *file, struct rte_flow_error *error)
 386 {
 387         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 388         struct roc_npc *npc = &dev->npc;
 389
 390         if (file == NULL) {
 391                 rte_flow_error_set(error, EINVAL,
 392                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
 393                                    "Invalid file");
 394                 return -rte_errno;
 395         }
 396
 397         if (flow != NULL) {
 398                 rte_flow_error_set(error, EINVAL,
 399                                    RTE_FLOW_ERROR_TYPE_HANDLE,
 400                                    NULL,
 401                                    "Invalid argument");
 402                 return -EINVAL;
 403         }
 404
 405         roc_npc_flow_dump(file, npc);
 406
 407         return 0;
 408 }
 409
 410 struct rte_flow_ops cnxk_flow_ops = {
 411         .validate = cnxk_flow_validate,
 412         .flush = cnxk_flow_flush,
 413         .query = cnxk_flow_query,
 414         .isolate = cnxk_flow_isolate,
 415         .dev_dump = cnxk_flow_dev_dump,
 416 };