examples/flow_classify/flow_classify.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Intel Corporation
   3  */
   4
   5 #include <stdint.h>
   6 #include <inttypes.h>
   7 #include <getopt.h>
   8
   9 #include <rte_eal.h>
  10 #include <rte_ethdev.h>
  11 #include <rte_cycles.h>
  12 #include <rte_lcore.h>
  13 #include <rte_mbuf.h>
  14 #include <rte_flow.h>
  15 #include <rte_flow_classify.h>
  16 #include <rte_table_acl.h>
  17
  18 #define RX_RING_SIZE 1024
  19 #define TX_RING_SIZE 1024
  20
  21 #define NUM_MBUFS 8191
  22 #define MBUF_CACHE_SIZE 250
  23 #define BURST_SIZE 32
  24
  25 #define MAX_NUM_CLASSIFY 30
  26 #define FLOW_CLASSIFY_MAX_RULE_NUM 91
  27 #define FLOW_CLASSIFY_MAX_PRIORITY 8
  28 #define FLOW_CLASSIFIER_NAME_SIZE 64
  29
  30 #define COMMENT_LEAD_CHAR       ('#')
  31 #define OPTION_RULE_IPV4        "rule_ipv4"
  32 #define RTE_LOGTYPE_FLOW_CLASSIFY       RTE_LOGTYPE_USER3
  33 #define flow_classify_log(format, ...) \
  34                 RTE_LOG(ERR, FLOW_CLASSIFY, format, ##__VA_ARGS__)
  35
  36 #define uint32_t_to_char(ip, a, b, c, d) do {\
  37                 *a = (unsigned char)(ip >> 24 & 0xff);\
  38                 *b = (unsigned char)(ip >> 16 & 0xff);\
  39                 *c = (unsigned char)(ip >> 8 & 0xff);\
  40                 *d = (unsigned char)(ip & 0xff);\
  41         } while (0)
  42
  43 enum {
  44         CB_FLD_SRC_ADDR,
  45         CB_FLD_DST_ADDR,
  46         CB_FLD_SRC_PORT,
  47         CB_FLD_SRC_PORT_DLM,
  48         CB_FLD_SRC_PORT_MASK,
  49         CB_FLD_DST_PORT,
  50         CB_FLD_DST_PORT_DLM,
  51         CB_FLD_DST_PORT_MASK,
  52         CB_FLD_PROTO,
  53         CB_FLD_PRIORITY,
  54         CB_FLD_NUM,
  55 };
  56
  57 static struct{
  58         const char *rule_ipv4_name;
  59 } parm_config;
  60 const char cb_port_delim[] = ":";
  61
  62 static const struct rte_eth_conf port_conf_default = {
  63         .rxmode = {
  64                 .max_rx_pkt_len = ETHER_MAX_LEN,
  65                 .ignore_offload_bitfield = 1,
  66         },
  67 };
  68
  69 struct flow_classifier {
  70         struct rte_flow_classifier *cls;
  71 };
  72
  73 struct flow_classifier_acl {
  74         struct flow_classifier cls;
  75 } __rte_cache_aligned;
  76
  77 /* ACL field definitions for IPv4 5 tuple rule */
  78
  79 enum {
  80         PROTO_FIELD_IPV4,
  81         SRC_FIELD_IPV4,
  82         DST_FIELD_IPV4,
  83         SRCP_FIELD_IPV4,
  84         DSTP_FIELD_IPV4,
  85         NUM_FIELDS_IPV4
  86 };
  87
  88 enum {
  89         PROTO_INPUT_IPV4,
  90         SRC_INPUT_IPV4,
  91         DST_INPUT_IPV4,
  92         SRCP_DESTP_INPUT_IPV4
  93 };
  94
  95 static struct rte_acl_field_def ipv4_defs[NUM_FIELDS_IPV4] = {
  96         /* first input field - always one byte long. */
  97         {
  98                 .type = RTE_ACL_FIELD_TYPE_BITMASK,
  99                 .size = sizeof(uint8_t),
 100                 .field_index = PROTO_FIELD_IPV4,
 101                 .input_index = PROTO_INPUT_IPV4,
 102                 .offset = sizeof(struct ether_hdr) +
 103                         offsetof(struct ipv4_hdr, next_proto_id),
 104         },
 105         /* next input field (IPv4 source address) - 4 consecutive bytes. */
 106         {
 107                 /* rte_flow uses a bit mask for IPv4 addresses */
 108                 .type = RTE_ACL_FIELD_TYPE_BITMASK,
 109                 .size = sizeof(uint32_t),
 110                 .field_index = SRC_FIELD_IPV4,
 111                 .input_index = SRC_INPUT_IPV4,
 112                 .offset = sizeof(struct ether_hdr) +
 113                         offsetof(struct ipv4_hdr, src_addr),
 114         },
 115         /* next input field (IPv4 destination address) - 4 consecutive bytes. */
 116         {
 117                 /* rte_flow uses a bit mask for IPv4 addresses */
 118                 .type = RTE_ACL_FIELD_TYPE_BITMASK,
 119                 .size = sizeof(uint32_t),
 120                 .field_index = DST_FIELD_IPV4,
 121                 .input_index = DST_INPUT_IPV4,
 122                 .offset = sizeof(struct ether_hdr) +
 123                         offsetof(struct ipv4_hdr, dst_addr),
 124         },
 125         /*
 126          * Next 2 fields (src & dst ports) form 4 consecutive bytes.
 127          * They share the same input index.
 128          */
 129         {
 130                 /* rte_flow uses a bit mask for protocol ports */
 131                 .type = RTE_ACL_FIELD_TYPE_BITMASK,
 132                 .size = sizeof(uint16_t),
 133                 .field_index = SRCP_FIELD_IPV4,
 134                 .input_index = SRCP_DESTP_INPUT_IPV4,
 135                 .offset = sizeof(struct ether_hdr) +
 136                         sizeof(struct ipv4_hdr) +
 137                         offsetof(struct tcp_hdr, src_port),
 138         },
 139         {
 140                 /* rte_flow uses a bit mask for protocol ports */
 141                 .type = RTE_ACL_FIELD_TYPE_BITMASK,
 142                 .size = sizeof(uint16_t),
 143                 .field_index = DSTP_FIELD_IPV4,
 144                 .input_index = SRCP_DESTP_INPUT_IPV4,
 145                 .offset = sizeof(struct ether_hdr) +
 146                         sizeof(struct ipv4_hdr) +
 147                         offsetof(struct tcp_hdr, dst_port),
 148         },
 149 };
 150
 151 /* flow classify data */
 152 static int num_classify_rules;
 153 static struct rte_flow_classify_rule *rules[MAX_NUM_CLASSIFY];
 154 static struct rte_flow_classify_ipv4_5tuple_stats ntuple_stats;
 155 static struct rte_flow_classify_stats classify_stats = {
 156                 .stats = (void **)&ntuple_stats
 157 };
 158
 159 /* parameters for rte_flow_classify_validate and
 160  * rte_flow_classify_table_entry_add functions
 161  */
 162
 163 static struct rte_flow_item  eth_item = { RTE_FLOW_ITEM_TYPE_ETH,
 164         0, 0, 0 };
 165 static struct rte_flow_item  end_item = { RTE_FLOW_ITEM_TYPE_END,
 166         0, 0, 0 };
 167
 168 /* sample actions:
 169  * "actions count / end"
 170  */
 171 struct rte_flow_query_count count = {
 172         .reset = 1,
 173         .hits_set = 1,
 174         .bytes_set = 1,
 175         .hits = 0,
 176         .bytes = 0,
 177 };
 178 static struct rte_flow_action count_action = { RTE_FLOW_ACTION_TYPE_COUNT,
 179         &count};
 180 static struct rte_flow_action end_action = { RTE_FLOW_ACTION_TYPE_END, 0};
 181 static struct rte_flow_action actions[2];
 182
 183 /* sample attributes */
 184 static struct rte_flow_attr attr;
 185
 186 /* flow_classify.c: * Based on DPDK skeleton forwarding example. */
 187
 188 /*
 189  * Initializes a given port using global settings and with the RX buffers
 190  * coming from the mbuf_pool passed as a parameter.
 191  */
 192 static inline int
 193 port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 194 {
 195         struct rte_eth_conf port_conf = port_conf_default;
 196         struct ether_addr addr;
 197         const uint16_t rx_rings = 1, tx_rings = 1;
 198         int retval;
 199         uint16_t q;
 200         struct rte_eth_dev_info dev_info;
 201         struct rte_eth_txconf txconf;
 202
 203         if (!rte_eth_dev_is_valid_port(port))
 204                 return -1;
 205
 206         rte_eth_dev_info_get(port, &dev_info);
 207         if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 208                 port_conf.txmode.offloads |=
 209                         DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 210
 211         /* Configure the Ethernet device. */
 212         retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
 213         if (retval != 0)
 214                 return retval;
 215
 216         /* Allocate and set up 1 RX queue per Ethernet port. */
 217         for (q = 0; q < rx_rings; q++) {
 218                 retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
 219                                 rte_eth_dev_socket_id(port), NULL, mbuf_pool);
 220                 if (retval < 0)
 221                         return retval;
 222         }
 223
 224         txconf = dev_info.default_txconf;
 225         txconf.txq_flags = ETH_TXQ_FLAGS_IGNORE;
 226         txconf.offloads = port_conf.txmode.offloads;
 227         /* Allocate and set up 1 TX queue per Ethernet port. */
 228         for (q = 0; q < tx_rings; q++) {
 229                 retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
 230                                 rte_eth_dev_socket_id(port), &txconf);
 231                 if (retval < 0)
 232                         return retval;
 233         }
 234
 235         /* Start the Ethernet port. */
 236         retval = rte_eth_dev_start(port);
 237         if (retval < 0)
 238                 return retval;
 239
 240         /* Display the port MAC address. */
 241         rte_eth_macaddr_get(port, &addr);
 242         printf("Port %u MAC: %02" PRIx8 " %02" PRIx8 " %02" PRIx8
 243                            " %02" PRIx8 " %02" PRIx8 " %02" PRIx8 "\n",
 244                         port,
 245                         addr.addr_bytes[0], addr.addr_bytes[1],
 246                         addr.addr_bytes[2], addr.addr_bytes[3],
 247                         addr.addr_bytes[4], addr.addr_bytes[5]);
 248
 249         /* Enable RX in promiscuous mode for the Ethernet device. */
 250         rte_eth_promiscuous_enable(port);
 251
 252         return 0;
 253 }
 254
 255 /*
 256  * The lcore main. This is the main thread that does the work, reading from
 257  * an input port classifying the packets and writing to an output port.
 258  */
 259 static __attribute__((noreturn)) void
 260 lcore_main(struct flow_classifier *cls_app)
 261 {
 262         uint16_t port;
 263         int ret;
 264         int i = 0;
 265
 266         ret = rte_flow_classify_table_entry_delete(cls_app->cls,
 267                         rules[7]);
 268         if (ret)
 269                 printf("table_entry_delete failed [7] %d\n\n", ret);
 270         else
 271                 printf("table_entry_delete succeeded [7]\n\n");
 272
 273         /*
 274          * Check that the port is on the same NUMA node as the polling thread
 275          * for best performance.
 276          */
 277         RTE_ETH_FOREACH_DEV(port)
 278                 if (rte_eth_dev_socket_id(port) > 0 &&
 279                         rte_eth_dev_socket_id(port) != (int)rte_socket_id()) {
 280                         printf("\n\n");
 281                         printf("WARNING: port %u is on remote NUMA node\n",
 282                                port);
 283                         printf("to polling thread.\n");
 284                         printf("Performance will not be optimal.\n");
 285                 }
 286         printf("\nCore %u forwarding packets. ", rte_lcore_id());
 287         printf("[Ctrl+C to quit]\n");
 288
 289         /* Run until the application is quit or killed. */
 290         for (;;) {
 291                 /*
 292                  * Receive packets on a port, classify them and forward them
 293                  * on the paired port.
 294                  * The mapping is 0 -> 1, 1 -> 0, 2 -> 3, 3 -> 2, etc.
 295                  */
 296                 RTE_ETH_FOREACH_DEV(port) {
 297                         /* Get burst of RX packets, from first port of pair. */
 298                         struct rte_mbuf *bufs[BURST_SIZE];
 299                         const uint16_t nb_rx = rte_eth_rx_burst(port, 0,
 300                                         bufs, BURST_SIZE);
 301
 302                         if (unlikely(nb_rx == 0))
 303                                 continue;
 304
 305                         for (i = 0; i < MAX_NUM_CLASSIFY; i++) {
 306                                 if (rules[i]) {
 307                                         ret = rte_flow_classifier_query(
 308                                                 cls_app->cls,
 309                                                 bufs, nb_rx, rules[i],
 310                                                 &classify_stats);
 311                                         if (ret)
 312                                                 printf(
 313                                                         "rule [%d] query failed ret [%d]\n\n",
 314                                                         i, ret);
 315                                         else {
 316                                                 printf(
 317                                                 "rule[%d] count=%"PRIu64"\n",
 318                                                 i, ntuple_stats.counter1);
 319
 320                                                 printf("proto = %d\n",
 321                                                 ntuple_stats.ipv4_5tuple.proto);
 322                                         }
 323                                 }
 324                         }
 325
 326                         /* Send burst of TX packets, to second port of pair. */
 327                         const uint16_t nb_tx = rte_eth_tx_burst(port ^ 1, 0,
 328                                         bufs, nb_rx);
 329
 330                         /* Free any unsent packets. */
 331                         if (unlikely(nb_tx < nb_rx)) {
 332                                 uint16_t buf;
 333
 334                                 for (buf = nb_tx; buf < nb_rx; buf++)
 335                                         rte_pktmbuf_free(bufs[buf]);
 336                         }
 337                 }
 338         }
 339 }
 340
 341 /*
 342  * Parse IPv4 5 tuple rules file, ipv4_rules_file.txt.
 343  * Expected format:
 344  * <src_ipv4_addr>'/'<masklen> <space> \
 345  * <dst_ipv4_addr>'/'<masklen> <space> \
 346  * <src_port> <space> ":" <src_port_mask> <space> \
 347  * <dst_port> <space> ":" <dst_port_mask> <space> \
 348  * <proto>'/'<proto_mask> <space> \
 349  * <priority>
 350  */
 351
 352 static int
 353 get_cb_field(char **in, uint32_t *fd, int base, unsigned long lim,
 354                 char dlm)
 355 {
 356         unsigned long val;
 357         char *end;
 358
 359         errno = 0;
 360         val = strtoul(*in, &end, base);
 361         if (errno != 0 || end[0] != dlm || val > lim)
 362                 return -EINVAL;
 363         *fd = (uint32_t)val;
 364         *in = end + 1;
 365         return 0;
 366 }
 367
 368 static int
 369 parse_ipv4_net(char *in, uint32_t *addr, uint32_t *mask_len)
 370 {
 371         uint32_t a, b, c, d, m;
 372
 373         if (get_cb_field(&in, &a, 0, UINT8_MAX, '.'))
 374                 return -EINVAL;
 375         if (get_cb_field(&in, &b, 0, UINT8_MAX, '.'))
 376                 return -EINVAL;
 377         if (get_cb_field(&in, &c, 0, UINT8_MAX, '.'))
 378                 return -EINVAL;
 379         if (get_cb_field(&in, &d, 0, UINT8_MAX, '/'))
 380                 return -EINVAL;
 381         if (get_cb_field(&in, &m, 0, sizeof(uint32_t) * CHAR_BIT, 0))
 382                 return -EINVAL;
 383
 384         addr[0] = IPv4(a, b, c, d);
 385         mask_len[0] = m;
 386         return 0;
 387 }
 388
 389 static int
 390 parse_ipv4_5tuple_rule(char *str, struct rte_eth_ntuple_filter *ntuple_filter)
 391 {
 392         int i, ret;
 393         char *s, *sp, *in[CB_FLD_NUM];
 394         static const char *dlm = " \t\n";
 395         int dim = CB_FLD_NUM;
 396         uint32_t temp;
 397
 398         s = str;
 399         for (i = 0; i != dim; i++, s = NULL) {
 400                 in[i] = strtok_r(s, dlm, &sp);
 401                 if (in[i] == NULL)
 402                         return -EINVAL;
 403         }
 404
 405         ret = parse_ipv4_net(in[CB_FLD_SRC_ADDR],
 406                         &ntuple_filter->src_ip,
 407                         &ntuple_filter->src_ip_mask);
 408         if (ret != 0) {
 409                 flow_classify_log("failed to read source address/mask: %s\n",
 410                         in[CB_FLD_SRC_ADDR]);
 411                 return ret;
 412         }
 413
 414         ret = parse_ipv4_net(in[CB_FLD_DST_ADDR],
 415                         &ntuple_filter->dst_ip,
 416                         &ntuple_filter->dst_ip_mask);
 417         if (ret != 0) {
 418                 flow_classify_log("failed to read source address/mask: %s\n",
 419                         in[CB_FLD_DST_ADDR]);
 420                 return ret;
 421         }
 422
 423         if (get_cb_field(&in[CB_FLD_SRC_PORT], &temp, 0, UINT16_MAX, 0))
 424                 return -EINVAL;
 425         ntuple_filter->src_port = (uint16_t)temp;
 426
 427         if (strncmp(in[CB_FLD_SRC_PORT_DLM], cb_port_delim,
 428                         sizeof(cb_port_delim)) != 0)
 429                 return -EINVAL;
 430
 431         if (get_cb_field(&in[CB_FLD_SRC_PORT_MASK], &temp, 0, UINT16_MAX, 0))
 432                 return -EINVAL;
 433         ntuple_filter->src_port_mask = (uint16_t)temp;
 434
 435         if (get_cb_field(&in[CB_FLD_DST_PORT], &temp, 0, UINT16_MAX, 0))
 436                 return -EINVAL;
 437         ntuple_filter->dst_port = (uint16_t)temp;
 438
 439         if (strncmp(in[CB_FLD_DST_PORT_DLM], cb_port_delim,
 440                         sizeof(cb_port_delim)) != 0)
 441                 return -EINVAL;
 442
 443         if (get_cb_field(&in[CB_FLD_DST_PORT_MASK], &temp, 0, UINT16_MAX, 0))
 444                 return -EINVAL;
 445         ntuple_filter->dst_port_mask = (uint16_t)temp;
 446
 447         if (get_cb_field(&in[CB_FLD_PROTO], &temp, 0, UINT8_MAX, '/'))
 448                 return -EINVAL;
 449         ntuple_filter->proto = (uint8_t)temp;
 450
 451         if (get_cb_field(&in[CB_FLD_PROTO], &temp, 0, UINT8_MAX, 0))
 452                 return -EINVAL;
 453         ntuple_filter->proto_mask = (uint8_t)temp;
 454
 455         if (get_cb_field(&in[CB_FLD_PRIORITY], &temp, 0, UINT16_MAX, 0))
 456                 return -EINVAL;
 457         ntuple_filter->priority = (uint16_t)temp;
 458         if (ntuple_filter->priority > FLOW_CLASSIFY_MAX_PRIORITY)
 459                 ret = -EINVAL;
 460
 461         return ret;
 462 }
 463
 464 /* Bypass comment and empty lines */
 465 static inline int
 466 is_bypass_line(char *buff)
 467 {
 468         int i = 0;
 469
 470         /* comment line */
 471         if (buff[0] == COMMENT_LEAD_CHAR)
 472                 return 1;
 473         /* empty line */
 474         while (buff[i] != '\0') {
 475                 if (!isspace(buff[i]))
 476                         return 0;
 477                 i++;
 478         }
 479         return 1;
 480 }
 481
 482 static uint32_t
 483 convert_depth_to_bitmask(uint32_t depth_val)
 484 {
 485         uint32_t bitmask = 0;
 486         int i, j;
 487
 488         for (i = depth_val, j = 0; i > 0; i--, j++)
 489                 bitmask |= (1 << (31 - j));
 490         return bitmask;
 491 }
 492
 493 static int
 494 add_classify_rule(struct rte_eth_ntuple_filter *ntuple_filter,
 495                 struct flow_classifier *cls_app)
 496 {
 497         int ret = -1;
 498         int key_found;
 499         struct rte_flow_error error;
 500         struct rte_flow_item_ipv4 ipv4_spec;
 501         struct rte_flow_item_ipv4 ipv4_mask;
 502         struct rte_flow_item ipv4_udp_item;
 503         struct rte_flow_item ipv4_tcp_item;
 504         struct rte_flow_item ipv4_sctp_item;
 505         struct rte_flow_item_udp udp_spec;
 506         struct rte_flow_item_udp udp_mask;
 507         struct rte_flow_item udp_item;
 508         struct rte_flow_item_tcp tcp_spec;
 509         struct rte_flow_item_tcp tcp_mask;
 510         struct rte_flow_item tcp_item;
 511         struct rte_flow_item_sctp sctp_spec;
 512         struct rte_flow_item_sctp sctp_mask;
 513         struct rte_flow_item sctp_item;
 514         struct rte_flow_item pattern_ipv4_5tuple[4];
 515         struct rte_flow_classify_rule *rule;
 516         uint8_t ipv4_proto;
 517
 518         if (num_classify_rules >= MAX_NUM_CLASSIFY) {
 519                 printf(
 520                         "\nINFO:  classify rule capacity %d reached\n",
 521                         num_classify_rules);
 522                 return ret;
 523         }
 524
 525         /* set up parameters for validate and add */
 526         memset(&ipv4_spec, 0, sizeof(ipv4_spec));
 527         ipv4_spec.hdr.next_proto_id = ntuple_filter->proto;
 528         ipv4_spec.hdr.src_addr = ntuple_filter->src_ip;
 529         ipv4_spec.hdr.dst_addr = ntuple_filter->dst_ip;
 530         ipv4_proto = ipv4_spec.hdr.next_proto_id;
 531
 532         memset(&ipv4_mask, 0, sizeof(ipv4_mask));
 533         ipv4_mask.hdr.next_proto_id = ntuple_filter->proto_mask;
 534         ipv4_mask.hdr.src_addr = ntuple_filter->src_ip_mask;
 535         ipv4_mask.hdr.src_addr =
 536                 convert_depth_to_bitmask(ipv4_mask.hdr.src_addr);
 537         ipv4_mask.hdr.dst_addr = ntuple_filter->dst_ip_mask;
 538         ipv4_mask.hdr.dst_addr =
 539                 convert_depth_to_bitmask(ipv4_mask.hdr.dst_addr);
 540
 541         switch (ipv4_proto) {
 542         case IPPROTO_UDP:
 543                 ipv4_udp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
 544                 ipv4_udp_item.spec = &ipv4_spec;
 545                 ipv4_udp_item.mask = &ipv4_mask;
 546                 ipv4_udp_item.last = NULL;
 547
 548                 udp_spec.hdr.src_port = ntuple_filter->src_port;
 549                 udp_spec.hdr.dst_port = ntuple_filter->dst_port;
 550                 udp_spec.hdr.dgram_len = 0;
 551                 udp_spec.hdr.dgram_cksum = 0;
 552
 553                 udp_mask.hdr.src_port = ntuple_filter->src_port_mask;
 554                 udp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
 555                 udp_mask.hdr.dgram_len = 0;
 556                 udp_mask.hdr.dgram_cksum = 0;
 557
 558                 udp_item.type = RTE_FLOW_ITEM_TYPE_UDP;
 559                 udp_item.spec = &udp_spec;
 560                 udp_item.mask = &udp_mask;
 561                 udp_item.last = NULL;
 562
 563                 attr.priority = ntuple_filter->priority;
 564                 pattern_ipv4_5tuple[1] = ipv4_udp_item;
 565                 pattern_ipv4_5tuple[2] = udp_item;
 566                 break;
 567         case IPPROTO_TCP:
 568                 ipv4_tcp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
 569                 ipv4_tcp_item.spec = &ipv4_spec;
 570                 ipv4_tcp_item.mask = &ipv4_mask;
 571                 ipv4_tcp_item.last = NULL;
 572
 573                 memset(&tcp_spec, 0, sizeof(tcp_spec));
 574                 tcp_spec.hdr.src_port = ntuple_filter->src_port;
 575                 tcp_spec.hdr.dst_port = ntuple_filter->dst_port;
 576
 577                 memset(&tcp_mask, 0, sizeof(tcp_mask));
 578                 tcp_mask.hdr.src_port = ntuple_filter->src_port_mask;
 579                 tcp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
 580
 581                 tcp_item.type = RTE_FLOW_ITEM_TYPE_TCP;
 582                 tcp_item.spec = &tcp_spec;
 583                 tcp_item.mask = &tcp_mask;
 584                 tcp_item.last = NULL;
 585
 586                 attr.priority = ntuple_filter->priority;
 587                 pattern_ipv4_5tuple[1] = ipv4_tcp_item;
 588                 pattern_ipv4_5tuple[2] = tcp_item;
 589                 break;
 590         case IPPROTO_SCTP:
 591                 ipv4_sctp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
 592                 ipv4_sctp_item.spec = &ipv4_spec;
 593                 ipv4_sctp_item.mask = &ipv4_mask;
 594                 ipv4_sctp_item.last = NULL;
 595
 596                 sctp_spec.hdr.src_port = ntuple_filter->src_port;
 597                 sctp_spec.hdr.dst_port = ntuple_filter->dst_port;
 598                 sctp_spec.hdr.cksum = 0;
 599                 sctp_spec.hdr.tag = 0;
 600
 601                 sctp_mask.hdr.src_port = ntuple_filter->src_port_mask;
 602                 sctp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
 603                 sctp_mask.hdr.cksum = 0;
 604                 sctp_mask.hdr.tag = 0;
 605
 606                 sctp_item.type = RTE_FLOW_ITEM_TYPE_SCTP;
 607                 sctp_item.spec = &sctp_spec;
 608                 sctp_item.mask = &sctp_mask;
 609                 sctp_item.last = NULL;
 610
 611                 attr.priority = ntuple_filter->priority;
 612                 pattern_ipv4_5tuple[1] = ipv4_sctp_item;
 613                 pattern_ipv4_5tuple[2] = sctp_item;
 614                 break;
 615         default:
 616                 return ret;
 617         }
 618
 619         attr.ingress = 1;
 620         pattern_ipv4_5tuple[0] = eth_item;
 621         pattern_ipv4_5tuple[3] = end_item;
 622         actions[0] = count_action;
 623         actions[1] = end_action;
 624
 625         /* Validate and add rule */
 626         ret = rte_flow_classify_validate(cls_app->cls, &attr,
 627                         pattern_ipv4_5tuple, actions, &error);
 628         if (ret) {
 629                 printf("table entry validate failed ipv4_proto = %u\n",
 630                         ipv4_proto);
 631                 return ret;
 632         }
 633
 634         rule = rte_flow_classify_table_entry_add(
 635                         cls_app->cls, &attr, pattern_ipv4_5tuple,
 636                         actions, &key_found, &error);
 637         if (rule == NULL) {
 638                 printf("table entry add failed ipv4_proto = %u\n",
 639                         ipv4_proto);
 640                 ret = -1;
 641                 return ret;
 642         }
 643
 644         rules[num_classify_rules] = rule;
 645         num_classify_rules++;
 646         return 0;
 647 }
 648
 649 static int
 650 add_rules(const char *rule_path, struct flow_classifier *cls_app)
 651 {
 652         FILE *fh;
 653         char buff[LINE_MAX];
 654         unsigned int i = 0;
 655         unsigned int total_num = 0;
 656         struct rte_eth_ntuple_filter ntuple_filter;
 657         int ret;
 658
 659         fh = fopen(rule_path, "rb");
 660         if (fh == NULL)
 661                 rte_exit(EXIT_FAILURE, "%s: fopen %s failed\n", __func__,
 662                         rule_path);
 663
 664         ret = fseek(fh, 0, SEEK_SET);
 665         if (ret)
 666                 rte_exit(EXIT_FAILURE, "%s: fseek %d failed\n", __func__,
 667                         ret);
 668
 669         i = 0;
 670         while (fgets(buff, LINE_MAX, fh) != NULL) {
 671                 i++;
 672
 673                 if (is_bypass_line(buff))
 674                         continue;
 675
 676                 if (total_num >= FLOW_CLASSIFY_MAX_RULE_NUM - 1) {
 677                         printf("\nINFO: classify rule capacity %d reached\n",
 678                                 total_num);
 679                         break;
 680                 }
 681
 682                 if (parse_ipv4_5tuple_rule(buff, &ntuple_filter) != 0)
 683                         rte_exit(EXIT_FAILURE,
 684                                 "%s Line %u: parse rules error\n",
 685                                 rule_path, i);
 686
 687                 if (add_classify_rule(&ntuple_filter, cls_app) != 0)
 688                         rte_exit(EXIT_FAILURE, "add rule error\n");
 689
 690                 total_num++;
 691         }
 692
 693         fclose(fh);
 694         return 0;
 695 }
 696
 697 /* display usage */
 698 static void
 699 print_usage(const char *prgname)
 700 {
 701         printf("%s usage:\n", prgname);
 702         printf("[EAL options] --  --"OPTION_RULE_IPV4"=FILE: ");
 703         printf("specify the ipv4 rules file.\n");
 704         printf("Each rule occupies one line in the file.\n");
 705 }
 706
 707 /* Parse the argument given in the command line of the application */
 708 static int
 709 parse_args(int argc, char **argv)
 710 {
 711         int opt, ret;
 712         char **argvopt;
 713         int option_index;
 714         char *prgname = argv[0];
 715         static struct option lgopts[] = {
 716                 {OPTION_RULE_IPV4, 1, 0, 0},
 717                 {NULL, 0, 0, 0}
 718         };
 719
 720         argvopt = argv;
 721
 722         while ((opt = getopt_long(argc, argvopt, "",
 723                                 lgopts, &option_index)) != EOF) {
 724
 725                 switch (opt) {
 726                 /* long options */
 727                 case 0:
 728                         if (!strncmp(lgopts[option_index].name,
 729                                         OPTION_RULE_IPV4,
 730                                         sizeof(OPTION_RULE_IPV4)))
 731                                 parm_config.rule_ipv4_name = optarg;
 732                         break;
 733                 default:
 734                         print_usage(prgname);
 735                         return -1;
 736                 }
 737         }
 738
 739         if (optind >= 0)
 740                 argv[optind-1] = prgname;
 741
 742         ret = optind-1;
 743         optind = 1; /* reset getopt lib */
 744         return ret;
 745 }
 746
 747 /*
 748  * The main function, which does initialization and calls the lcore_main
 749  * function.
 750  */
 751 int
 752 main(int argc, char *argv[])
 753 {
 754         struct rte_mempool *mbuf_pool;
 755         uint16_t nb_ports;
 756         uint16_t portid;
 757         int ret;
 758         int socket_id;
 759         struct rte_table_acl_params table_acl_params;
 760         struct rte_flow_classify_table_params cls_table_params;
 761         struct flow_classifier *cls_app;
 762         struct rte_flow_classifier_params cls_params;
 763         uint32_t size;
 764
 765         /* Initialize the Environment Abstraction Layer (EAL). */
 766         ret = rte_eal_init(argc, argv);
 767         if (ret < 0)
 768                 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
 769
 770         argc -= ret;
 771         argv += ret;
 772
 773         /* parse application arguments (after the EAL ones) */
 774         ret = parse_args(argc, argv);
 775         if (ret < 0)
 776                 rte_exit(EXIT_FAILURE, "Invalid flow_classify parameters\n");
 777
 778         /* Check that there is an even number of ports to send/receive on. */
 779         nb_ports = rte_eth_dev_count_avail();
 780         if (nb_ports < 2 || (nb_ports & 1))
 781                 rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n");
 782
 783         /* Creates a new mempool in memory to hold the mbufs. */
 784         mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports,
 785                 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 786
 787         if (mbuf_pool == NULL)
 788                 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
 789
 790         /* Initialize all ports. */
 791         RTE_ETH_FOREACH_DEV(portid)
 792                 if (port_init(portid, mbuf_pool) != 0)
 793                         rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu8 "\n",
 794                                         portid);
 795
 796         if (rte_lcore_count() > 1)
 797                 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n");
 798
 799         socket_id = rte_eth_dev_socket_id(0);
 800
 801         /* Memory allocation */
 802         size = RTE_CACHE_LINE_ROUNDUP(sizeof(struct flow_classifier_acl));
 803         cls_app = rte_zmalloc(NULL, size, RTE_CACHE_LINE_SIZE);
 804         if (cls_app == NULL)
 805                 rte_exit(EXIT_FAILURE, "Cannot allocate classifier memory\n");
 806
 807         cls_params.name = "flow_classifier";
 808         cls_params.socket_id = socket_id;
 809
 810         cls_app->cls = rte_flow_classifier_create(&cls_params);
 811         if (cls_app->cls == NULL) {
 812                 rte_free(cls_app);
 813                 rte_exit(EXIT_FAILURE, "Cannot create classifier\n");
 814         }
 815
 816         /* initialise ACL table params */
 817         table_acl_params.name = "table_acl_ipv4_5tuple";
 818         table_acl_params.n_rules = FLOW_CLASSIFY_MAX_RULE_NUM;
 819         table_acl_params.n_rule_fields = RTE_DIM(ipv4_defs);
 820         memcpy(table_acl_params.field_format, ipv4_defs, sizeof(ipv4_defs));
 821
 822         /* initialise table create params */
 823         cls_table_params.ops = &rte_table_acl_ops;
 824         cls_table_params.arg_create = &table_acl_params;
 825         cls_table_params.type = RTE_FLOW_CLASSIFY_TABLE_ACL_IP4_5TUPLE;
 826
 827         ret = rte_flow_classify_table_create(cls_app->cls, &cls_table_params);
 828         if (ret) {
 829                 rte_flow_classifier_free(cls_app->cls);
 830                 rte_free(cls_app);
 831                 rte_exit(EXIT_FAILURE, "Failed to create classifier table\n");
 832         }
 833
 834         /* read file of IPv4 5 tuple rules and initialize parameters
 835          * for rte_flow_classify_validate and rte_flow_classify_table_entry_add
 836          * API's.
 837          */
 838         if (add_rules(parm_config.rule_ipv4_name, cls_app)) {
 839                 rte_flow_classifier_free(cls_app->cls);
 840                 rte_free(cls_app);
 841                 rte_exit(EXIT_FAILURE, "Failed to add rules\n");
 842         }
 843
 844         /* Call lcore_main on the master core only. */
 845         lcore_main(cls_app);
 846
 847         return 0;
 848 }