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 = RTE_ETHER_MAX_LEN,
  65         },
  66 };
  67
  68 struct flow_classifier {
  69         struct rte_flow_classifier *cls;
  70 };
  71
  72 struct flow_classifier_acl {
  73         struct flow_classifier cls;
  74 } __rte_cache_aligned;
  75
  76 /* ACL field definitions for IPv4 5 tuple rule */
  77
  78 enum {
  79         PROTO_FIELD_IPV4,
  80         SRC_FIELD_IPV4,
  81         DST_FIELD_IPV4,
  82         SRCP_FIELD_IPV4,
  83         DSTP_FIELD_IPV4,
  84         NUM_FIELDS_IPV4
  85 };
  86
  87 enum {
  88         PROTO_INPUT_IPV4,
  89         SRC_INPUT_IPV4,
  90         DST_INPUT_IPV4,
  91         SRCP_DESTP_INPUT_IPV4
  92 };
  93
  94 static struct rte_acl_field_def ipv4_defs[NUM_FIELDS_IPV4] = {
  95         /* first input field - always one byte long. */
  96         {
  97                 .type = RTE_ACL_FIELD_TYPE_BITMASK,
  98                 .size = sizeof(uint8_t),
  99                 .field_index = PROTO_FIELD_IPV4,
 100                 .input_index = PROTO_INPUT_IPV4,
 101                 .offset = sizeof(struct rte_ether_hdr) +
 102                         offsetof(struct rte_ipv4_hdr, next_proto_id),
 103         },
 104         /* next input field (IPv4 source address) - 4 consecutive bytes. */
 105         {
 106                 /* rte_flow uses a bit mask for IPv4 addresses */
 107                 .type = RTE_ACL_FIELD_TYPE_BITMASK,
 108                 .size = sizeof(uint32_t),
 109                 .field_index = SRC_FIELD_IPV4,
 110                 .input_index = SRC_INPUT_IPV4,
 111                 .offset = sizeof(struct rte_ether_hdr) +
 112                         offsetof(struct rte_ipv4_hdr, src_addr),
 113         },
 114         /* next input field (IPv4 destination address) - 4 consecutive bytes. */
 115         {
 116                 /* rte_flow uses a bit mask for IPv4 addresses */
 117                 .type = RTE_ACL_FIELD_TYPE_BITMASK,
 118                 .size = sizeof(uint32_t),
 119                 .field_index = DST_FIELD_IPV4,
 120                 .input_index = DST_INPUT_IPV4,
 121                 .offset = sizeof(struct rte_ether_hdr) +
 122                         offsetof(struct rte_ipv4_hdr, dst_addr),
 123         },
 124         /*
 125          * Next 2 fields (src & dst ports) form 4 consecutive bytes.
 126          * They share the same input index.
 127          */
 128         {
 129                 /* rte_flow uses a bit mask for protocol ports */
 130                 .type = RTE_ACL_FIELD_TYPE_BITMASK,
 131                 .size = sizeof(uint16_t),
 132                 .field_index = SRCP_FIELD_IPV4,
 133                 .input_index = SRCP_DESTP_INPUT_IPV4,
 134                 .offset = sizeof(struct rte_ether_hdr) +
 135                         sizeof(struct rte_ipv4_hdr) +
 136                         offsetof(struct rte_tcp_hdr, src_port),
 137         },
 138         {
 139                 /* rte_flow uses a bit mask for protocol ports */
 140                 .type = RTE_ACL_FIELD_TYPE_BITMASK,
 141                 .size = sizeof(uint16_t),
 142                 .field_index = DSTP_FIELD_IPV4,
 143                 .input_index = SRCP_DESTP_INPUT_IPV4,
 144                 .offset = sizeof(struct rte_ether_hdr) +
 145                         sizeof(struct rte_ipv4_hdr) +
 146                         offsetof(struct rte_tcp_hdr, dst_port),
 147         },
 148 };
 149
 150 /* flow classify data */
 151 static int num_classify_rules;
 152 static struct rte_flow_classify_rule *rules[MAX_NUM_CLASSIFY];
 153 static struct rte_flow_classify_ipv4_5tuple_stats ntuple_stats;
 154 static struct rte_flow_classify_stats classify_stats = {
 155                 .stats = (void **)&ntuple_stats
 156 };
 157
 158 /* parameters for rte_flow_classify_validate and
 159  * rte_flow_classify_table_entry_add functions
 160  */
 161
 162 static struct rte_flow_item  eth_item = { RTE_FLOW_ITEM_TYPE_ETH,
 163         0, 0, 0 };
 164 static struct rte_flow_item  end_item = { RTE_FLOW_ITEM_TYPE_END,
 165         0, 0, 0 };
 166
 167 /* sample actions:
 168  * "actions count / end"
 169  */
 170 struct rte_flow_query_count count = {
 171         .reset = 1,
 172         .hits_set = 1,
 173         .bytes_set = 1,
 174         .hits = 0,
 175         .bytes = 0,
 176 };
 177 static struct rte_flow_action count_action = { RTE_FLOW_ACTION_TYPE_COUNT,
 178         &count};
 179 static struct rte_flow_action end_action = { RTE_FLOW_ACTION_TYPE_END, 0};
 180 static struct rte_flow_action actions[2];
 181
 182 /* sample attributes */
 183 static struct rte_flow_attr attr;
 184
 185 /* flow_classify.c: * Based on DPDK skeleton forwarding example. */
 186
 187 /*
 188  * Initializes a given port using global settings and with the RX buffers
 189  * coming from the mbuf_pool passed as a parameter.
 190  */
 191 static inline int
 192 port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 193 {
 194         struct rte_eth_conf port_conf = port_conf_default;
 195         struct rte_ether_addr addr;
 196         const uint16_t rx_rings = 1, tx_rings = 1;
 197         int retval;
 198         uint16_t q;
 199         struct rte_eth_dev_info dev_info;
 200         struct rte_eth_txconf txconf;
 201
 202         if (!rte_eth_dev_is_valid_port(port))
 203                 return -1;
 204
 205         retval = rte_eth_dev_info_get(port, &dev_info);
 206         if (retval != 0) {
 207                 printf("Error during getting device (port %u) info: %s\n",
 208                                 port, strerror(-retval));
 209                 return retval;
 210         }
 211
 212         if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 213                 port_conf.txmode.offloads |=
 214                         DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 215
 216         /* Configure the Ethernet device. */
 217         retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
 218         if (retval != 0)
 219                 return retval;
 220
 221         /* Allocate and set up 1 RX queue per Ethernet port. */
 222         for (q = 0; q < rx_rings; q++) {
 223                 retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
 224                                 rte_eth_dev_socket_id(port), NULL, mbuf_pool);
 225                 if (retval < 0)
 226                         return retval;
 227         }
 228
 229         txconf = dev_info.default_txconf;
 230         txconf.offloads = port_conf.txmode.offloads;
 231         /* Allocate and set up 1 TX queue per Ethernet port. */
 232         for (q = 0; q < tx_rings; q++) {
 233                 retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
 234                                 rte_eth_dev_socket_id(port), &txconf);
 235                 if (retval < 0)
 236                         return retval;
 237         }
 238
 239         /* Start the Ethernet port. */
 240         retval = rte_eth_dev_start(port);
 241         if (retval < 0)
 242                 return retval;
 243
 244         /* Display the port MAC address. */
 245         rte_eth_macaddr_get(port, &addr);
 246         printf("Port %u MAC: %02" PRIx8 " %02" PRIx8 " %02" PRIx8
 247                            " %02" PRIx8 " %02" PRIx8 " %02" PRIx8 "\n",
 248                         port,
 249                         addr.addr_bytes[0], addr.addr_bytes[1],
 250                         addr.addr_bytes[2], addr.addr_bytes[3],
 251                         addr.addr_bytes[4], addr.addr_bytes[5]);
 252
 253         /* Enable RX in promiscuous mode for the Ethernet device. */
 254         retval = rte_eth_promiscuous_enable(port);
 255         if (retval != 0)
 256                 return retval;
 257
 258         return 0;
 259 }
 260
 261 /*
 262  * The lcore main. This is the main thread that does the work, reading from
 263  * an input port classifying the packets and writing to an output port.
 264  */
 265 static __attribute__((noreturn)) void
 266 lcore_main(struct flow_classifier *cls_app)
 267 {
 268         uint16_t port;
 269         int ret;
 270         int i = 0;
 271
 272         ret = rte_flow_classify_table_entry_delete(cls_app->cls,
 273                         rules[7]);
 274         if (ret)
 275                 printf("table_entry_delete failed [7] %d\n\n", ret);
 276         else
 277                 printf("table_entry_delete succeeded [7]\n\n");
 278
 279         /*
 280          * Check that the port is on the same NUMA node as the polling thread
 281          * for best performance.
 282          */
 283         RTE_ETH_FOREACH_DEV(port)
 284                 if (rte_eth_dev_socket_id(port) > 0 &&
 285                         rte_eth_dev_socket_id(port) != (int)rte_socket_id()) {
 286                         printf("\n\n");
 287                         printf("WARNING: port %u is on remote NUMA node\n",
 288                                port);
 289                         printf("to polling thread.\n");
 290                         printf("Performance will not be optimal.\n");
 291                 }
 292         printf("\nCore %u forwarding packets. ", rte_lcore_id());
 293         printf("[Ctrl+C to quit]\n");
 294
 295         /* Run until the application is quit or killed. */
 296         for (;;) {
 297                 /*
 298                  * Receive packets on a port, classify them and forward them
 299                  * on the paired port.
 300                  * The mapping is 0 -> 1, 1 -> 0, 2 -> 3, 3 -> 2, etc.
 301                  */
 302                 RTE_ETH_FOREACH_DEV(port) {
 303                         /* Get burst of RX packets, from first port of pair. */
 304                         struct rte_mbuf *bufs[BURST_SIZE];
 305                         const uint16_t nb_rx = rte_eth_rx_burst(port, 0,
 306                                         bufs, BURST_SIZE);
 307
 308                         if (unlikely(nb_rx == 0))
 309                                 continue;
 310
 311                         for (i = 0; i < MAX_NUM_CLASSIFY; i++) {
 312                                 if (rules[i]) {
 313                                         ret = rte_flow_classifier_query(
 314                                                 cls_app->cls,
 315                                                 bufs, nb_rx, rules[i],
 316                                                 &classify_stats);
 317                                         if (ret)
 318                                                 printf(
 319                                                         "rule [%d] query failed ret [%d]\n\n",
 320                                                         i, ret);
 321                                         else {
 322                                                 printf(
 323                                                 "rule[%d] count=%"PRIu64"\n",
 324                                                 i, ntuple_stats.counter1);
 325
 326                                                 printf("proto = %d\n",
 327                                                 ntuple_stats.ipv4_5tuple.proto);
 328                                         }
 329                                 }
 330                         }
 331
 332                         /* Send burst of TX packets, to second port of pair. */
 333                         const uint16_t nb_tx = rte_eth_tx_burst(port ^ 1, 0,
 334                                         bufs, nb_rx);
 335
 336                         /* Free any unsent packets. */
 337                         if (unlikely(nb_tx < nb_rx)) {
 338                                 uint16_t buf;
 339
 340                                 for (buf = nb_tx; buf < nb_rx; buf++)
 341                                         rte_pktmbuf_free(bufs[buf]);
 342                         }
 343                 }
 344         }
 345 }
 346
 347 /*
 348  * Parse IPv4 5 tuple rules file, ipv4_rules_file.txt.
 349  * Expected format:
 350  * <src_ipv4_addr>'/'<masklen> <space> \
 351  * <dst_ipv4_addr>'/'<masklen> <space> \
 352  * <src_port> <space> ":" <src_port_mask> <space> \
 353  * <dst_port> <space> ":" <dst_port_mask> <space> \
 354  * <proto>'/'<proto_mask> <space> \
 355  * <priority>
 356  */
 357
 358 static int
 359 get_cb_field(char **in, uint32_t *fd, int base, unsigned long lim,
 360                 char dlm)
 361 {
 362         unsigned long val;
 363         char *end;
 364
 365         errno = 0;
 366         val = strtoul(*in, &end, base);
 367         if (errno != 0 || end[0] != dlm || val > lim)
 368                 return -EINVAL;
 369         *fd = (uint32_t)val;
 370         *in = end + 1;
 371         return 0;
 372 }
 373
 374 static int
 375 parse_ipv4_net(char *in, uint32_t *addr, uint32_t *mask_len)
 376 {
 377         uint32_t a, b, c, d, m;
 378
 379         if (get_cb_field(&in, &a, 0, UINT8_MAX, '.'))
 380                 return -EINVAL;
 381         if (get_cb_field(&in, &b, 0, UINT8_MAX, '.'))
 382                 return -EINVAL;
 383         if (get_cb_field(&in, &c, 0, UINT8_MAX, '.'))
 384                 return -EINVAL;
 385         if (get_cb_field(&in, &d, 0, UINT8_MAX, '/'))
 386                 return -EINVAL;
 387         if (get_cb_field(&in, &m, 0, sizeof(uint32_t) * CHAR_BIT, 0))
 388                 return -EINVAL;
 389
 390         addr[0] = RTE_IPV4(a, b, c, d);
 391         mask_len[0] = m;
 392         return 0;
 393 }
 394
 395 static int
 396 parse_ipv4_5tuple_rule(char *str, struct rte_eth_ntuple_filter *ntuple_filter)
 397 {
 398         int i, ret;
 399         char *s, *sp, *in[CB_FLD_NUM];
 400         static const char *dlm = " \t\n";
 401         int dim = CB_FLD_NUM;
 402         uint32_t temp;
 403
 404         s = str;
 405         for (i = 0; i != dim; i++, s = NULL) {
 406                 in[i] = strtok_r(s, dlm, &sp);
 407                 if (in[i] == NULL)
 408                         return -EINVAL;
 409         }
 410
 411         ret = parse_ipv4_net(in[CB_FLD_SRC_ADDR],
 412                         &ntuple_filter->src_ip,
 413                         &ntuple_filter->src_ip_mask);
 414         if (ret != 0) {
 415                 flow_classify_log("failed to read source address/mask: %s\n",
 416                         in[CB_FLD_SRC_ADDR]);
 417                 return ret;
 418         }
 419
 420         ret = parse_ipv4_net(in[CB_FLD_DST_ADDR],
 421                         &ntuple_filter->dst_ip,
 422                         &ntuple_filter->dst_ip_mask);
 423         if (ret != 0) {
 424                 flow_classify_log("failed to read source address/mask: %s\n",
 425                         in[CB_FLD_DST_ADDR]);
 426                 return ret;
 427         }
 428
 429         if (get_cb_field(&in[CB_FLD_SRC_PORT], &temp, 0, UINT16_MAX, 0))
 430                 return -EINVAL;
 431         ntuple_filter->src_port = (uint16_t)temp;
 432
 433         if (strncmp(in[CB_FLD_SRC_PORT_DLM], cb_port_delim,
 434                         sizeof(cb_port_delim)) != 0)
 435                 return -EINVAL;
 436
 437         if (get_cb_field(&in[CB_FLD_SRC_PORT_MASK], &temp, 0, UINT16_MAX, 0))
 438                 return -EINVAL;
 439         ntuple_filter->src_port_mask = (uint16_t)temp;
 440
 441         if (get_cb_field(&in[CB_FLD_DST_PORT], &temp, 0, UINT16_MAX, 0))
 442                 return -EINVAL;
 443         ntuple_filter->dst_port = (uint16_t)temp;
 444
 445         if (strncmp(in[CB_FLD_DST_PORT_DLM], cb_port_delim,
 446                         sizeof(cb_port_delim)) != 0)
 447                 return -EINVAL;
 448
 449         if (get_cb_field(&in[CB_FLD_DST_PORT_MASK], &temp, 0, UINT16_MAX, 0))
 450                 return -EINVAL;
 451         ntuple_filter->dst_port_mask = (uint16_t)temp;
 452
 453         if (get_cb_field(&in[CB_FLD_PROTO], &temp, 0, UINT8_MAX, '/'))
 454                 return -EINVAL;
 455         ntuple_filter->proto = (uint8_t)temp;
 456
 457         if (get_cb_field(&in[CB_FLD_PROTO], &temp, 0, UINT8_MAX, 0))
 458                 return -EINVAL;
 459         ntuple_filter->proto_mask = (uint8_t)temp;
 460
 461         if (get_cb_field(&in[CB_FLD_PRIORITY], &temp, 0, UINT16_MAX, 0))
 462                 return -EINVAL;
 463         ntuple_filter->priority = (uint16_t)temp;
 464         if (ntuple_filter->priority > FLOW_CLASSIFY_MAX_PRIORITY)
 465                 ret = -EINVAL;
 466
 467         return ret;
 468 }
 469
 470 /* Bypass comment and empty lines */
 471 static inline int
 472 is_bypass_line(char *buff)
 473 {
 474         int i = 0;
 475
 476         /* comment line */
 477         if (buff[0] == COMMENT_LEAD_CHAR)
 478                 return 1;
 479         /* empty line */
 480         while (buff[i] != '\0') {
 481                 if (!isspace(buff[i]))
 482                         return 0;
 483                 i++;
 484         }
 485         return 1;
 486 }
 487
 488 static uint32_t
 489 convert_depth_to_bitmask(uint32_t depth_val)
 490 {
 491         uint32_t bitmask = 0;
 492         int i, j;
 493
 494         for (i = depth_val, j = 0; i > 0; i--, j++)
 495                 bitmask |= (1 << (31 - j));
 496         return bitmask;
 497 }
 498
 499 static int
 500 add_classify_rule(struct rte_eth_ntuple_filter *ntuple_filter,
 501                 struct flow_classifier *cls_app)
 502 {
 503         int ret = -1;
 504         int key_found;
 505         struct rte_flow_error error;
 506         struct rte_flow_item_ipv4 ipv4_spec;
 507         struct rte_flow_item_ipv4 ipv4_mask;
 508         struct rte_flow_item ipv4_udp_item;
 509         struct rte_flow_item ipv4_tcp_item;
 510         struct rte_flow_item ipv4_sctp_item;
 511         struct rte_flow_item_udp udp_spec;
 512         struct rte_flow_item_udp udp_mask;
 513         struct rte_flow_item udp_item;
 514         struct rte_flow_item_tcp tcp_spec;
 515         struct rte_flow_item_tcp tcp_mask;
 516         struct rte_flow_item tcp_item;
 517         struct rte_flow_item_sctp sctp_spec;
 518         struct rte_flow_item_sctp sctp_mask;
 519         struct rte_flow_item sctp_item;
 520         struct rte_flow_item pattern_ipv4_5tuple[4];
 521         struct rte_flow_classify_rule *rule;
 522         uint8_t ipv4_proto;
 523
 524         if (num_classify_rules >= MAX_NUM_CLASSIFY) {
 525                 printf(
 526                         "\nINFO:  classify rule capacity %d reached\n",
 527                         num_classify_rules);
 528                 return ret;
 529         }
 530
 531         /* set up parameters for validate and add */
 532         memset(&ipv4_spec, 0, sizeof(ipv4_spec));
 533         ipv4_spec.hdr.next_proto_id = ntuple_filter->proto;
 534         ipv4_spec.hdr.src_addr = ntuple_filter->src_ip;
 535         ipv4_spec.hdr.dst_addr = ntuple_filter->dst_ip;
 536         ipv4_proto = ipv4_spec.hdr.next_proto_id;
 537
 538         memset(&ipv4_mask, 0, sizeof(ipv4_mask));
 539         ipv4_mask.hdr.next_proto_id = ntuple_filter->proto_mask;
 540         ipv4_mask.hdr.src_addr = ntuple_filter->src_ip_mask;
 541         ipv4_mask.hdr.src_addr =
 542                 convert_depth_to_bitmask(ipv4_mask.hdr.src_addr);
 543         ipv4_mask.hdr.dst_addr = ntuple_filter->dst_ip_mask;
 544         ipv4_mask.hdr.dst_addr =
 545                 convert_depth_to_bitmask(ipv4_mask.hdr.dst_addr);
 546
 547         switch (ipv4_proto) {
 548         case IPPROTO_UDP:
 549                 ipv4_udp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
 550                 ipv4_udp_item.spec = &ipv4_spec;
 551                 ipv4_udp_item.mask = &ipv4_mask;
 552                 ipv4_udp_item.last = NULL;
 553
 554                 udp_spec.hdr.src_port = ntuple_filter->src_port;
 555                 udp_spec.hdr.dst_port = ntuple_filter->dst_port;
 556                 udp_spec.hdr.dgram_len = 0;
 557                 udp_spec.hdr.dgram_cksum = 0;
 558
 559                 udp_mask.hdr.src_port = ntuple_filter->src_port_mask;
 560                 udp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
 561                 udp_mask.hdr.dgram_len = 0;
 562                 udp_mask.hdr.dgram_cksum = 0;
 563
 564                 udp_item.type = RTE_FLOW_ITEM_TYPE_UDP;
 565                 udp_item.spec = &udp_spec;
 566                 udp_item.mask = &udp_mask;
 567                 udp_item.last = NULL;
 568
 569                 attr.priority = ntuple_filter->priority;
 570                 pattern_ipv4_5tuple[1] = ipv4_udp_item;
 571                 pattern_ipv4_5tuple[2] = udp_item;
 572                 break;
 573         case IPPROTO_TCP:
 574                 ipv4_tcp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
 575                 ipv4_tcp_item.spec = &ipv4_spec;
 576                 ipv4_tcp_item.mask = &ipv4_mask;
 577                 ipv4_tcp_item.last = NULL;
 578
 579                 memset(&tcp_spec, 0, sizeof(tcp_spec));
 580                 tcp_spec.hdr.src_port = ntuple_filter->src_port;
 581                 tcp_spec.hdr.dst_port = ntuple_filter->dst_port;
 582
 583                 memset(&tcp_mask, 0, sizeof(tcp_mask));
 584                 tcp_mask.hdr.src_port = ntuple_filter->src_port_mask;
 585                 tcp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
 586
 587                 tcp_item.type = RTE_FLOW_ITEM_TYPE_TCP;
 588                 tcp_item.spec = &tcp_spec;
 589                 tcp_item.mask = &tcp_mask;
 590                 tcp_item.last = NULL;
 591
 592                 attr.priority = ntuple_filter->priority;
 593                 pattern_ipv4_5tuple[1] = ipv4_tcp_item;
 594                 pattern_ipv4_5tuple[2] = tcp_item;
 595                 break;
 596         case IPPROTO_SCTP:
 597                 ipv4_sctp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
 598                 ipv4_sctp_item.spec = &ipv4_spec;
 599                 ipv4_sctp_item.mask = &ipv4_mask;
 600                 ipv4_sctp_item.last = NULL;
 601
 602                 sctp_spec.hdr.src_port = ntuple_filter->src_port;
 603                 sctp_spec.hdr.dst_port = ntuple_filter->dst_port;
 604                 sctp_spec.hdr.cksum = 0;
 605                 sctp_spec.hdr.tag = 0;
 606
 607                 sctp_mask.hdr.src_port = ntuple_filter->src_port_mask;
 608                 sctp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
 609                 sctp_mask.hdr.cksum = 0;
 610                 sctp_mask.hdr.tag = 0;
 611
 612                 sctp_item.type = RTE_FLOW_ITEM_TYPE_SCTP;
 613                 sctp_item.spec = &sctp_spec;
 614                 sctp_item.mask = &sctp_mask;
 615                 sctp_item.last = NULL;
 616
 617                 attr.priority = ntuple_filter->priority;
 618                 pattern_ipv4_5tuple[1] = ipv4_sctp_item;
 619                 pattern_ipv4_5tuple[2] = sctp_item;
 620                 break;
 621         default:
 622                 return ret;
 623         }
 624
 625         attr.ingress = 1;
 626         pattern_ipv4_5tuple[0] = eth_item;
 627         pattern_ipv4_5tuple[3] = end_item;
 628         actions[0] = count_action;
 629         actions[1] = end_action;
 630
 631         /* Validate and add rule */
 632         ret = rte_flow_classify_validate(cls_app->cls, &attr,
 633                         pattern_ipv4_5tuple, actions, &error);
 634         if (ret) {
 635                 printf("table entry validate failed ipv4_proto = %u\n",
 636                         ipv4_proto);
 637                 return ret;
 638         }
 639
 640         rule = rte_flow_classify_table_entry_add(
 641                         cls_app->cls, &attr, pattern_ipv4_5tuple,
 642                         actions, &key_found, &error);
 643         if (rule == NULL) {
 644                 printf("table entry add failed ipv4_proto = %u\n",
 645                         ipv4_proto);
 646                 ret = -1;
 647                 return ret;
 648         }
 649
 650         rules[num_classify_rules] = rule;
 651         num_classify_rules++;
 652         return 0;
 653 }
 654
 655 static int
 656 add_rules(const char *rule_path, struct flow_classifier *cls_app)
 657 {
 658         FILE *fh;
 659         char buff[LINE_MAX];
 660         unsigned int i = 0;
 661         unsigned int total_num = 0;
 662         struct rte_eth_ntuple_filter ntuple_filter;
 663         int ret;
 664
 665         fh = fopen(rule_path, "rb");
 666         if (fh == NULL)
 667                 rte_exit(EXIT_FAILURE, "%s: fopen %s failed\n", __func__,
 668                         rule_path);
 669
 670         ret = fseek(fh, 0, SEEK_SET);
 671         if (ret)
 672                 rte_exit(EXIT_FAILURE, "%s: fseek %d failed\n", __func__,
 673                         ret);
 674
 675         i = 0;
 676         while (fgets(buff, LINE_MAX, fh) != NULL) {
 677                 i++;
 678
 679                 if (is_bypass_line(buff))
 680                         continue;
 681
 682                 if (total_num >= FLOW_CLASSIFY_MAX_RULE_NUM - 1) {
 683                         printf("\nINFO: classify rule capacity %d reached\n",
 684                                 total_num);
 685                         break;
 686                 }
 687
 688                 if (parse_ipv4_5tuple_rule(buff, &ntuple_filter) != 0)
 689                         rte_exit(EXIT_FAILURE,
 690                                 "%s Line %u: parse rules error\n",
 691                                 rule_path, i);
 692
 693                 if (add_classify_rule(&ntuple_filter, cls_app) != 0)
 694                         rte_exit(EXIT_FAILURE, "add rule error\n");
 695
 696                 total_num++;
 697         }
 698
 699         fclose(fh);
 700         return 0;
 701 }
 702
 703 /* display usage */
 704 static void
 705 print_usage(const char *prgname)
 706 {
 707         printf("%s usage:\n", prgname);
 708         printf("[EAL options] --  --"OPTION_RULE_IPV4"=FILE: ");
 709         printf("specify the ipv4 rules file.\n");
 710         printf("Each rule occupies one line in the file.\n");
 711 }
 712
 713 /* Parse the argument given in the command line of the application */
 714 static int
 715 parse_args(int argc, char **argv)
 716 {
 717         int opt, ret;
 718         char **argvopt;
 719         int option_index;
 720         char *prgname = argv[0];
 721         static struct option lgopts[] = {
 722                 {OPTION_RULE_IPV4, 1, 0, 0},
 723                 {NULL, 0, 0, 0}
 724         };
 725
 726         argvopt = argv;
 727
 728         while ((opt = getopt_long(argc, argvopt, "",
 729                                 lgopts, &option_index)) != EOF) {
 730
 731                 switch (opt) {
 732                 /* long options */
 733                 case 0:
 734                         if (!strncmp(lgopts[option_index].name,
 735                                         OPTION_RULE_IPV4,
 736                                         sizeof(OPTION_RULE_IPV4)))
 737                                 parm_config.rule_ipv4_name = optarg;
 738                         break;
 739                 default:
 740                         print_usage(prgname);
 741                         return -1;
 742                 }
 743         }
 744
 745         if (optind >= 0)
 746                 argv[optind-1] = prgname;
 747
 748         ret = optind-1;
 749         optind = 1; /* reset getopt lib */
 750         return ret;
 751 }
 752
 753 /*
 754  * The main function, which does initialization and calls the lcore_main
 755  * function.
 756  */
 757 int
 758 main(int argc, char *argv[])
 759 {
 760         struct rte_mempool *mbuf_pool;
 761         uint16_t nb_ports;
 762         uint16_t portid;
 763         int ret;
 764         int socket_id;
 765         struct rte_table_acl_params table_acl_params;
 766         struct rte_flow_classify_table_params cls_table_params;
 767         struct flow_classifier *cls_app;
 768         struct rte_flow_classifier_params cls_params;
 769         uint32_t size;
 770
 771         /* Initialize the Environment Abstraction Layer (EAL). */
 772         ret = rte_eal_init(argc, argv);
 773         if (ret < 0)
 774                 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
 775
 776         argc -= ret;
 777         argv += ret;
 778
 779         /* parse application arguments (after the EAL ones) */
 780         ret = parse_args(argc, argv);
 781         if (ret < 0)
 782                 rte_exit(EXIT_FAILURE, "Invalid flow_classify parameters\n");
 783
 784         /* Check that there is an even number of ports to send/receive on. */
 785         nb_ports = rte_eth_dev_count_avail();
 786         if (nb_ports < 2 || (nb_ports & 1))
 787                 rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n");
 788
 789         /* Creates a new mempool in memory to hold the mbufs. */
 790         mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports,
 791                 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 792
 793         if (mbuf_pool == NULL)
 794                 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
 795
 796         /* Initialize all ports. */
 797         RTE_ETH_FOREACH_DEV(portid)
 798                 if (port_init(portid, mbuf_pool) != 0)
 799                         rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu8 "\n",
 800                                         portid);
 801
 802         if (rte_lcore_count() > 1)
 803                 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n");
 804
 805         socket_id = rte_eth_dev_socket_id(0);
 806
 807         /* Memory allocation */
 808         size = RTE_CACHE_LINE_ROUNDUP(sizeof(struct flow_classifier_acl));
 809         cls_app = rte_zmalloc(NULL, size, RTE_CACHE_LINE_SIZE);
 810         if (cls_app == NULL)
 811                 rte_exit(EXIT_FAILURE, "Cannot allocate classifier memory\n");
 812
 813         cls_params.name = "flow_classifier";
 814         cls_params.socket_id = socket_id;
 815
 816         cls_app->cls = rte_flow_classifier_create(&cls_params);
 817         if (cls_app->cls == NULL) {
 818                 rte_free(cls_app);
 819                 rte_exit(EXIT_FAILURE, "Cannot create classifier\n");
 820         }
 821
 822         /* initialise ACL table params */
 823         table_acl_params.name = "table_acl_ipv4_5tuple";
 824         table_acl_params.n_rules = FLOW_CLASSIFY_MAX_RULE_NUM;
 825         table_acl_params.n_rule_fields = RTE_DIM(ipv4_defs);
 826         memcpy(table_acl_params.field_format, ipv4_defs, sizeof(ipv4_defs));
 827
 828         /* initialise table create params */
 829         cls_table_params.ops = &rte_table_acl_ops;
 830         cls_table_params.arg_create = &table_acl_params;
 831         cls_table_params.type = RTE_FLOW_CLASSIFY_TABLE_ACL_IP4_5TUPLE;
 832
 833         ret = rte_flow_classify_table_create(cls_app->cls, &cls_table_params);
 834         if (ret) {
 835                 rte_flow_classifier_free(cls_app->cls);
 836                 rte_free(cls_app);
 837                 rte_exit(EXIT_FAILURE, "Failed to create classifier table\n");
 838         }
 839
 840         /* read file of IPv4 5 tuple rules and initialize parameters
 841          * for rte_flow_classify_validate and rte_flow_classify_table_entry_add
 842          * API's.
 843          */
 844         if (add_rules(parm_config.rule_ipv4_name, cls_app)) {
 845                 rte_flow_classifier_free(cls_app->cls);
 846                 rte_free(cls_app);
 847                 rte_exit(EXIT_FAILURE, "Failed to add rules\n");
 848         }
 849
 850         /* Call lcore_main on the master core only. */
 851         lcore_main(cls_app);
 852
 853         return 0;
 854 }