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 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 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         rte_eth_dev_info_get(port, &dev_info);
 206         if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 207                 port_conf.txmode.offloads |=
 208                         DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 209
 210         /* Configure the Ethernet device. */
 211         retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
 212         if (retval != 0)
 213                 return retval;
 214
 215         /* Allocate and set up 1 RX queue per Ethernet port. */
 216         for (q = 0; q < rx_rings; q++) {
 217                 retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
 218                                 rte_eth_dev_socket_id(port), NULL, mbuf_pool);
 219                 if (retval < 0)
 220                         return retval;
 221         }
 222
 223         txconf = dev_info.default_txconf;
 224         txconf.offloads = port_conf.txmode.offloads;
 225         /* Allocate and set up 1 TX queue per Ethernet port. */
 226         for (q = 0; q < tx_rings; q++) {
 227                 retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
 228                                 rte_eth_dev_socket_id(port), &txconf);
 229                 if (retval < 0)
 230                         return retval;
 231         }
 232
 233         /* Start the Ethernet port. */
 234         retval = rte_eth_dev_start(port);
 235         if (retval < 0)
 236                 return retval;
 237
 238         /* Display the port MAC address. */
 239         rte_eth_macaddr_get(port, &addr);
 240         printf("Port %u MAC: %02" PRIx8 " %02" PRIx8 " %02" PRIx8
 241                            " %02" PRIx8 " %02" PRIx8 " %02" PRIx8 "\n",
 242                         port,
 243                         addr.addr_bytes[0], addr.addr_bytes[1],
 244                         addr.addr_bytes[2], addr.addr_bytes[3],
 245                         addr.addr_bytes[4], addr.addr_bytes[5]);
 246
 247         /* Enable RX in promiscuous mode for the Ethernet device. */
 248         rte_eth_promiscuous_enable(port);
 249
 250         return 0;
 251 }
 252
 253 /*
 254  * The lcore main. This is the main thread that does the work, reading from
 255  * an input port classifying the packets and writing to an output port.
 256  */
 257 static __attribute__((noreturn)) void
 258 lcore_main(struct flow_classifier *cls_app)
 259 {
 260         uint16_t port;
 261         int ret;
 262         int i = 0;
 263
 264         ret = rte_flow_classify_table_entry_delete(cls_app->cls,
 265                         rules[7]);
 266         if (ret)
 267                 printf("table_entry_delete failed [7] %d\n\n", ret);
 268         else
 269                 printf("table_entry_delete succeeded [7]\n\n");
 270
 271         /*
 272          * Check that the port is on the same NUMA node as the polling thread
 273          * for best performance.
 274          */
 275         RTE_ETH_FOREACH_DEV(port)
 276                 if (rte_eth_dev_socket_id(port) > 0 &&
 277                         rte_eth_dev_socket_id(port) != (int)rte_socket_id()) {
 278                         printf("\n\n");
 279                         printf("WARNING: port %u is on remote NUMA node\n",
 280                                port);
 281                         printf("to polling thread.\n");
 282                         printf("Performance will not be optimal.\n");
 283                 }
 284         printf("\nCore %u forwarding packets. ", rte_lcore_id());
 285         printf("[Ctrl+C to quit]\n");
 286
 287         /* Run until the application is quit or killed. */
 288         for (;;) {
 289                 /*
 290                  * Receive packets on a port, classify them and forward them
 291                  * on the paired port.
 292                  * The mapping is 0 -> 1, 1 -> 0, 2 -> 3, 3 -> 2, etc.
 293                  */
 294                 RTE_ETH_FOREACH_DEV(port) {
 295                         /* Get burst of RX packets, from first port of pair. */
 296                         struct rte_mbuf *bufs[BURST_SIZE];
 297                         const uint16_t nb_rx = rte_eth_rx_burst(port, 0,
 298                                         bufs, BURST_SIZE);
 299
 300                         if (unlikely(nb_rx == 0))
 301                                 continue;
 302
 303                         for (i = 0; i < MAX_NUM_CLASSIFY; i++) {
 304                                 if (rules[i]) {
 305                                         ret = rte_flow_classifier_query(
 306                                                 cls_app->cls,
 307                                                 bufs, nb_rx, rules[i],
 308                                                 &classify_stats);
 309                                         if (ret)
 310                                                 printf(
 311                                                         "rule [%d] query failed ret [%d]\n\n",
 312                                                         i, ret);
 313                                         else {
 314                                                 printf(
 315                                                 "rule[%d] count=%"PRIu64"\n",
 316                                                 i, ntuple_stats.counter1);
 317
 318                                                 printf("proto = %d\n",
 319                                                 ntuple_stats.ipv4_5tuple.proto);
 320                                         }
 321                                 }
 322                         }
 323
 324                         /* Send burst of TX packets, to second port of pair. */
 325                         const uint16_t nb_tx = rte_eth_tx_burst(port ^ 1, 0,
 326                                         bufs, nb_rx);
 327
 328                         /* Free any unsent packets. */
 329                         if (unlikely(nb_tx < nb_rx)) {
 330                                 uint16_t buf;
 331
 332                                 for (buf = nb_tx; buf < nb_rx; buf++)
 333                                         rte_pktmbuf_free(bufs[buf]);
 334                         }
 335                 }
 336         }
 337 }
 338
 339 /*
 340  * Parse IPv4 5 tuple rules file, ipv4_rules_file.txt.
 341  * Expected format:
 342  * <src_ipv4_addr>'/'<masklen> <space> \
 343  * <dst_ipv4_addr>'/'<masklen> <space> \
 344  * <src_port> <space> ":" <src_port_mask> <space> \
 345  * <dst_port> <space> ":" <dst_port_mask> <space> \
 346  * <proto>'/'<proto_mask> <space> \
 347  * <priority>
 348  */
 349
 350 static int
 351 get_cb_field(char **in, uint32_t *fd, int base, unsigned long lim,
 352                 char dlm)
 353 {
 354         unsigned long val;
 355         char *end;
 356
 357         errno = 0;
 358         val = strtoul(*in, &end, base);
 359         if (errno != 0 || end[0] != dlm || val > lim)
 360                 return -EINVAL;
 361         *fd = (uint32_t)val;
 362         *in = end + 1;
 363         return 0;
 364 }
 365
 366 static int
 367 parse_ipv4_net(char *in, uint32_t *addr, uint32_t *mask_len)
 368 {
 369         uint32_t a, b, c, d, m;
 370
 371         if (get_cb_field(&in, &a, 0, UINT8_MAX, '.'))
 372                 return -EINVAL;
 373         if (get_cb_field(&in, &b, 0, UINT8_MAX, '.'))
 374                 return -EINVAL;
 375         if (get_cb_field(&in, &c, 0, UINT8_MAX, '.'))
 376                 return -EINVAL;
 377         if (get_cb_field(&in, &d, 0, UINT8_MAX, '/'))
 378                 return -EINVAL;
 379         if (get_cb_field(&in, &m, 0, sizeof(uint32_t) * CHAR_BIT, 0))
 380                 return -EINVAL;
 381
 382         addr[0] = RTE_IPv4(a, b, c, d);
 383         mask_len[0] = m;
 384         return 0;
 385 }
 386
 387 static int
 388 parse_ipv4_5tuple_rule(char *str, struct rte_eth_ntuple_filter *ntuple_filter)
 389 {
 390         int i, ret;
 391         char *s, *sp, *in[CB_FLD_NUM];
 392         static const char *dlm = " \t\n";
 393         int dim = CB_FLD_NUM;
 394         uint32_t temp;
 395
 396         s = str;
 397         for (i = 0; i != dim; i++, s = NULL) {
 398                 in[i] = strtok_r(s, dlm, &sp);
 399                 if (in[i] == NULL)
 400                         return -EINVAL;
 401         }
 402
 403         ret = parse_ipv4_net(in[CB_FLD_SRC_ADDR],
 404                         &ntuple_filter->src_ip,
 405                         &ntuple_filter->src_ip_mask);
 406         if (ret != 0) {
 407                 flow_classify_log("failed to read source address/mask: %s\n",
 408                         in[CB_FLD_SRC_ADDR]);
 409                 return ret;
 410         }
 411
 412         ret = parse_ipv4_net(in[CB_FLD_DST_ADDR],
 413                         &ntuple_filter->dst_ip,
 414                         &ntuple_filter->dst_ip_mask);
 415         if (ret != 0) {
 416                 flow_classify_log("failed to read source address/mask: %s\n",
 417                         in[CB_FLD_DST_ADDR]);
 418                 return ret;
 419         }
 420
 421         if (get_cb_field(&in[CB_FLD_SRC_PORT], &temp, 0, UINT16_MAX, 0))
 422                 return -EINVAL;
 423         ntuple_filter->src_port = (uint16_t)temp;
 424
 425         if (strncmp(in[CB_FLD_SRC_PORT_DLM], cb_port_delim,
 426                         sizeof(cb_port_delim)) != 0)
 427                 return -EINVAL;
 428
 429         if (get_cb_field(&in[CB_FLD_SRC_PORT_MASK], &temp, 0, UINT16_MAX, 0))
 430                 return -EINVAL;
 431         ntuple_filter->src_port_mask = (uint16_t)temp;
 432
 433         if (get_cb_field(&in[CB_FLD_DST_PORT], &temp, 0, UINT16_MAX, 0))
 434                 return -EINVAL;
 435         ntuple_filter->dst_port = (uint16_t)temp;
 436
 437         if (strncmp(in[CB_FLD_DST_PORT_DLM], cb_port_delim,
 438                         sizeof(cb_port_delim)) != 0)
 439                 return -EINVAL;
 440
 441         if (get_cb_field(&in[CB_FLD_DST_PORT_MASK], &temp, 0, UINT16_MAX, 0))
 442                 return -EINVAL;
 443         ntuple_filter->dst_port_mask = (uint16_t)temp;
 444
 445         if (get_cb_field(&in[CB_FLD_PROTO], &temp, 0, UINT8_MAX, '/'))
 446                 return -EINVAL;
 447         ntuple_filter->proto = (uint8_t)temp;
 448
 449         if (get_cb_field(&in[CB_FLD_PROTO], &temp, 0, UINT8_MAX, 0))
 450                 return -EINVAL;
 451         ntuple_filter->proto_mask = (uint8_t)temp;
 452
 453         if (get_cb_field(&in[CB_FLD_PRIORITY], &temp, 0, UINT16_MAX, 0))
 454                 return -EINVAL;
 455         ntuple_filter->priority = (uint16_t)temp;
 456         if (ntuple_filter->priority > FLOW_CLASSIFY_MAX_PRIORITY)
 457                 ret = -EINVAL;
 458
 459         return ret;
 460 }
 461
 462 /* Bypass comment and empty lines */
 463 static inline int
 464 is_bypass_line(char *buff)
 465 {
 466         int i = 0;
 467
 468         /* comment line */
 469         if (buff[0] == COMMENT_LEAD_CHAR)
 470                 return 1;
 471         /* empty line */
 472         while (buff[i] != '\0') {
 473                 if (!isspace(buff[i]))
 474                         return 0;
 475                 i++;
 476         }
 477         return 1;
 478 }
 479
 480 static uint32_t
 481 convert_depth_to_bitmask(uint32_t depth_val)
 482 {
 483         uint32_t bitmask = 0;
 484         int i, j;
 485
 486         for (i = depth_val, j = 0; i > 0; i--, j++)
 487                 bitmask |= (1 << (31 - j));
 488         return bitmask;
 489 }
 490
 491 static int
 492 add_classify_rule(struct rte_eth_ntuple_filter *ntuple_filter,
 493                 struct flow_classifier *cls_app)
 494 {
 495         int ret = -1;
 496         int key_found;
 497         struct rte_flow_error error;
 498         struct rte_flow_item_ipv4 ipv4_spec;
 499         struct rte_flow_item_ipv4 ipv4_mask;
 500         struct rte_flow_item ipv4_udp_item;
 501         struct rte_flow_item ipv4_tcp_item;
 502         struct rte_flow_item ipv4_sctp_item;
 503         struct rte_flow_item_udp udp_spec;
 504         struct rte_flow_item_udp udp_mask;
 505         struct rte_flow_item udp_item;
 506         struct rte_flow_item_tcp tcp_spec;
 507         struct rte_flow_item_tcp tcp_mask;
 508         struct rte_flow_item tcp_item;
 509         struct rte_flow_item_sctp sctp_spec;
 510         struct rte_flow_item_sctp sctp_mask;
 511         struct rte_flow_item sctp_item;
 512         struct rte_flow_item pattern_ipv4_5tuple[4];
 513         struct rte_flow_classify_rule *rule;
 514         uint8_t ipv4_proto;
 515
 516         if (num_classify_rules >= MAX_NUM_CLASSIFY) {
 517                 printf(
 518                         "\nINFO:  classify rule capacity %d reached\n",
 519                         num_classify_rules);
 520                 return ret;
 521         }
 522
 523         /* set up parameters for validate and add */
 524         memset(&ipv4_spec, 0, sizeof(ipv4_spec));
 525         ipv4_spec.hdr.next_proto_id = ntuple_filter->proto;
 526         ipv4_spec.hdr.src_addr = ntuple_filter->src_ip;
 527         ipv4_spec.hdr.dst_addr = ntuple_filter->dst_ip;
 528         ipv4_proto = ipv4_spec.hdr.next_proto_id;
 529
 530         memset(&ipv4_mask, 0, sizeof(ipv4_mask));
 531         ipv4_mask.hdr.next_proto_id = ntuple_filter->proto_mask;
 532         ipv4_mask.hdr.src_addr = ntuple_filter->src_ip_mask;
 533         ipv4_mask.hdr.src_addr =
 534                 convert_depth_to_bitmask(ipv4_mask.hdr.src_addr);
 535         ipv4_mask.hdr.dst_addr = ntuple_filter->dst_ip_mask;
 536         ipv4_mask.hdr.dst_addr =
 537                 convert_depth_to_bitmask(ipv4_mask.hdr.dst_addr);
 538
 539         switch (ipv4_proto) {
 540         case IPPROTO_UDP:
 541                 ipv4_udp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
 542                 ipv4_udp_item.spec = &ipv4_spec;
 543                 ipv4_udp_item.mask = &ipv4_mask;
 544                 ipv4_udp_item.last = NULL;
 545
 546                 udp_spec.hdr.src_port = ntuple_filter->src_port;
 547                 udp_spec.hdr.dst_port = ntuple_filter->dst_port;
 548                 udp_spec.hdr.dgram_len = 0;
 549                 udp_spec.hdr.dgram_cksum = 0;
 550
 551                 udp_mask.hdr.src_port = ntuple_filter->src_port_mask;
 552                 udp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
 553                 udp_mask.hdr.dgram_len = 0;
 554                 udp_mask.hdr.dgram_cksum = 0;
 555
 556                 udp_item.type = RTE_FLOW_ITEM_TYPE_UDP;
 557                 udp_item.spec = &udp_spec;
 558                 udp_item.mask = &udp_mask;
 559                 udp_item.last = NULL;
 560
 561                 attr.priority = ntuple_filter->priority;
 562                 pattern_ipv4_5tuple[1] = ipv4_udp_item;
 563                 pattern_ipv4_5tuple[2] = udp_item;
 564                 break;
 565         case IPPROTO_TCP:
 566                 ipv4_tcp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
 567                 ipv4_tcp_item.spec = &ipv4_spec;
 568                 ipv4_tcp_item.mask = &ipv4_mask;
 569                 ipv4_tcp_item.last = NULL;
 570
 571                 memset(&tcp_spec, 0, sizeof(tcp_spec));
 572                 tcp_spec.hdr.src_port = ntuple_filter->src_port;
 573                 tcp_spec.hdr.dst_port = ntuple_filter->dst_port;
 574
 575                 memset(&tcp_mask, 0, sizeof(tcp_mask));
 576                 tcp_mask.hdr.src_port = ntuple_filter->src_port_mask;
 577                 tcp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
 578
 579                 tcp_item.type = RTE_FLOW_ITEM_TYPE_TCP;
 580                 tcp_item.spec = &tcp_spec;
 581                 tcp_item.mask = &tcp_mask;
 582                 tcp_item.last = NULL;
 583
 584                 attr.priority = ntuple_filter->priority;
 585                 pattern_ipv4_5tuple[1] = ipv4_tcp_item;
 586                 pattern_ipv4_5tuple[2] = tcp_item;
 587                 break;
 588         case IPPROTO_SCTP:
 589                 ipv4_sctp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
 590                 ipv4_sctp_item.spec = &ipv4_spec;
 591                 ipv4_sctp_item.mask = &ipv4_mask;
 592                 ipv4_sctp_item.last = NULL;
 593
 594                 sctp_spec.hdr.src_port = ntuple_filter->src_port;
 595                 sctp_spec.hdr.dst_port = ntuple_filter->dst_port;
 596                 sctp_spec.hdr.cksum = 0;
 597                 sctp_spec.hdr.tag = 0;
 598
 599                 sctp_mask.hdr.src_port = ntuple_filter->src_port_mask;
 600                 sctp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
 601                 sctp_mask.hdr.cksum = 0;
 602                 sctp_mask.hdr.tag = 0;
 603
 604                 sctp_item.type = RTE_FLOW_ITEM_TYPE_SCTP;
 605                 sctp_item.spec = &sctp_spec;
 606                 sctp_item.mask = &sctp_mask;
 607                 sctp_item.last = NULL;
 608
 609                 attr.priority = ntuple_filter->priority;
 610                 pattern_ipv4_5tuple[1] = ipv4_sctp_item;
 611                 pattern_ipv4_5tuple[2] = sctp_item;
 612                 break;
 613         default:
 614                 return ret;
 615         }
 616
 617         attr.ingress = 1;
 618         pattern_ipv4_5tuple[0] = eth_item;
 619         pattern_ipv4_5tuple[3] = end_item;
 620         actions[0] = count_action;
 621         actions[1] = end_action;
 622
 623         /* Validate and add rule */
 624         ret = rte_flow_classify_validate(cls_app->cls, &attr,
 625                         pattern_ipv4_5tuple, actions, &error);
 626         if (ret) {
 627                 printf("table entry validate failed ipv4_proto = %u\n",
 628                         ipv4_proto);
 629                 return ret;
 630         }
 631
 632         rule = rte_flow_classify_table_entry_add(
 633                         cls_app->cls, &attr, pattern_ipv4_5tuple,
 634                         actions, &key_found, &error);
 635         if (rule == NULL) {
 636                 printf("table entry add failed ipv4_proto = %u\n",
 637                         ipv4_proto);
 638                 ret = -1;
 639                 return ret;
 640         }
 641
 642         rules[num_classify_rules] = rule;
 643         num_classify_rules++;
 644         return 0;
 645 }
 646
 647 static int
 648 add_rules(const char *rule_path, struct flow_classifier *cls_app)
 649 {
 650         FILE *fh;
 651         char buff[LINE_MAX];
 652         unsigned int i = 0;
 653         unsigned int total_num = 0;
 654         struct rte_eth_ntuple_filter ntuple_filter;
 655         int ret;
 656
 657         fh = fopen(rule_path, "rb");
 658         if (fh == NULL)
 659                 rte_exit(EXIT_FAILURE, "%s: fopen %s failed\n", __func__,
 660                         rule_path);
 661
 662         ret = fseek(fh, 0, SEEK_SET);
 663         if (ret)
 664                 rte_exit(EXIT_FAILURE, "%s: fseek %d failed\n", __func__,
 665                         ret);
 666
 667         i = 0;
 668         while (fgets(buff, LINE_MAX, fh) != NULL) {
 669                 i++;
 670
 671                 if (is_bypass_line(buff))
 672                         continue;
 673
 674                 if (total_num >= FLOW_CLASSIFY_MAX_RULE_NUM - 1) {
 675                         printf("\nINFO: classify rule capacity %d reached\n",
 676                                 total_num);
 677                         break;
 678                 }
 679
 680                 if (parse_ipv4_5tuple_rule(buff, &ntuple_filter) != 0)
 681                         rte_exit(EXIT_FAILURE,
 682                                 "%s Line %u: parse rules error\n",
 683                                 rule_path, i);
 684
 685                 if (add_classify_rule(&ntuple_filter, cls_app) != 0)
 686                         rte_exit(EXIT_FAILURE, "add rule error\n");
 687
 688                 total_num++;
 689         }
 690
 691         fclose(fh);
 692         return 0;
 693 }
 694
 695 /* display usage */
 696 static void
 697 print_usage(const char *prgname)
 698 {
 699         printf("%s usage:\n", prgname);
 700         printf("[EAL options] --  --"OPTION_RULE_IPV4"=FILE: ");
 701         printf("specify the ipv4 rules file.\n");
 702         printf("Each rule occupies one line in the file.\n");
 703 }
 704
 705 /* Parse the argument given in the command line of the application */
 706 static int
 707 parse_args(int argc, char **argv)
 708 {
 709         int opt, ret;
 710         char **argvopt;
 711         int option_index;
 712         char *prgname = argv[0];
 713         static struct option lgopts[] = {
 714                 {OPTION_RULE_IPV4, 1, 0, 0},
 715                 {NULL, 0, 0, 0}
 716         };
 717
 718         argvopt = argv;
 719
 720         while ((opt = getopt_long(argc, argvopt, "",
 721                                 lgopts, &option_index)) != EOF) {
 722
 723                 switch (opt) {
 724                 /* long options */
 725                 case 0:
 726                         if (!strncmp(lgopts[option_index].name,
 727                                         OPTION_RULE_IPV4,
 728                                         sizeof(OPTION_RULE_IPV4)))
 729                                 parm_config.rule_ipv4_name = optarg;
 730                         break;
 731                 default:
 732                         print_usage(prgname);
 733                         return -1;
 734                 }
 735         }
 736
 737         if (optind >= 0)
 738                 argv[optind-1] = prgname;
 739
 740         ret = optind-1;
 741         optind = 1; /* reset getopt lib */
 742         return ret;
 743 }
 744
 745 /*
 746  * The main function, which does initialization and calls the lcore_main
 747  * function.
 748  */
 749 int
 750 main(int argc, char *argv[])
 751 {
 752         struct rte_mempool *mbuf_pool;
 753         uint16_t nb_ports;
 754         uint16_t portid;
 755         int ret;
 756         int socket_id;
 757         struct rte_table_acl_params table_acl_params;
 758         struct rte_flow_classify_table_params cls_table_params;
 759         struct flow_classifier *cls_app;
 760         struct rte_flow_classifier_params cls_params;
 761         uint32_t size;
 762
 763         /* Initialize the Environment Abstraction Layer (EAL). */
 764         ret = rte_eal_init(argc, argv);
 765         if (ret < 0)
 766                 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
 767
 768         argc -= ret;
 769         argv += ret;
 770
 771         /* parse application arguments (after the EAL ones) */
 772         ret = parse_args(argc, argv);
 773         if (ret < 0)
 774                 rte_exit(EXIT_FAILURE, "Invalid flow_classify parameters\n");
 775
 776         /* Check that there is an even number of ports to send/receive on. */
 777         nb_ports = rte_eth_dev_count_avail();
 778         if (nb_ports < 2 || (nb_ports & 1))
 779                 rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n");
 780
 781         /* Creates a new mempool in memory to hold the mbufs. */
 782         mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports,
 783                 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 784
 785         if (mbuf_pool == NULL)
 786                 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
 787
 788         /* Initialize all ports. */
 789         RTE_ETH_FOREACH_DEV(portid)
 790                 if (port_init(portid, mbuf_pool) != 0)
 791                         rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu8 "\n",
 792                                         portid);
 793
 794         if (rte_lcore_count() > 1)
 795                 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n");
 796
 797         socket_id = rte_eth_dev_socket_id(0);
 798
 799         /* Memory allocation */
 800         size = RTE_CACHE_LINE_ROUNDUP(sizeof(struct flow_classifier_acl));
 801         cls_app = rte_zmalloc(NULL, size, RTE_CACHE_LINE_SIZE);
 802         if (cls_app == NULL)
 803                 rte_exit(EXIT_FAILURE, "Cannot allocate classifier memory\n");
 804
 805         cls_params.name = "flow_classifier";
 806         cls_params.socket_id = socket_id;
 807
 808         cls_app->cls = rte_flow_classifier_create(&cls_params);
 809         if (cls_app->cls == NULL) {
 810                 rte_free(cls_app);
 811                 rte_exit(EXIT_FAILURE, "Cannot create classifier\n");
 812         }
 813
 814         /* initialise ACL table params */
 815         table_acl_params.name = "table_acl_ipv4_5tuple";
 816         table_acl_params.n_rules = FLOW_CLASSIFY_MAX_RULE_NUM;
 817         table_acl_params.n_rule_fields = RTE_DIM(ipv4_defs);
 818         memcpy(table_acl_params.field_format, ipv4_defs, sizeof(ipv4_defs));
 819
 820         /* initialise table create params */
 821         cls_table_params.ops = &rte_table_acl_ops;
 822         cls_table_params.arg_create = &table_acl_params;
 823         cls_table_params.type = RTE_FLOW_CLASSIFY_TABLE_ACL_IP4_5TUPLE;
 824
 825         ret = rte_flow_classify_table_create(cls_app->cls, &cls_table_params);
 826         if (ret) {
 827                 rte_flow_classifier_free(cls_app->cls);
 828                 rte_free(cls_app);
 829                 rte_exit(EXIT_FAILURE, "Failed to create classifier table\n");
 830         }
 831
 832         /* read file of IPv4 5 tuple rules and initialize parameters
 833          * for rte_flow_classify_validate and rte_flow_classify_table_entry_add
 834          * API's.
 835          */
 836         if (add_rules(parm_config.rule_ipv4_name, cls_app)) {
 837                 rte_flow_classifier_free(cls_app->cls);
 838                 rte_free(cls_app);
 839                 rte_exit(EXIT_FAILURE, "Failed to add rules\n");
 840         }
 841
 842         /* Call lcore_main on the master core only. */
 843         lcore_main(cls_app);
 844
 845         return 0;
 846 }