examples/flow_filtering/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2017 Mellanox Technologies, Ltd
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <stdint.h>
   9 #include <inttypes.h>
  10 #include <sys/types.h>
  11 #include <sys/queue.h>
  12 #include <netinet/in.h>
  13 #include <setjmp.h>
  14 #include <stdarg.h>
  15 #include <ctype.h>
  16 #include <errno.h>
  17 #include <getopt.h>
  18 #include <signal.h>
  19 #include <stdbool.h>
  20
  21 #include <rte_eal.h>
  22 #include <rte_common.h>
  23 #include <rte_malloc.h>
  24 #include <rte_ether.h>
  25 #include <rte_ethdev.h>
  26 #include <rte_mempool.h>
  27 #include <rte_mbuf.h>
  28 #include <rte_net.h>
  29 #include <rte_flow.h>
  30 #include <rte_cycles.h>
  31
  32 static volatile bool force_quit;
  33
  34 static uint16_t port_id;
  35 static uint16_t nr_queues = 5;
  36 static uint8_t selected_queue = 1;
  37 struct rte_mempool *mbuf_pool;
  38 struct rte_flow *flow;
  39
  40 #define SRC_IP ((0<<24) + (0<<16) + (0<<8) + 0) /* src ip = 0.0.0.0 */
  41 #define DEST_IP ((192<<24) + (168<<16) + (1<<8) + 1) /* dest ip = 192.168.1.1 */
  42 #define FULL_MASK 0xffffffff /* full mask */
  43 #define EMPTY_MASK 0x0 /* empty mask */
  44
  45 #include "flow_blocks.c"
  46
  47 static inline void
  48 print_ether_addr(const char *what, struct rte_ether_addr *eth_addr)
  49 {
  50         char buf[RTE_ETHER_ADDR_FMT_SIZE];
  51         rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, eth_addr);
  52         printf("%s%s", what, buf);
  53 }
  54
  55 static int
  56 main_loop(void)
  57 {
  58         struct rte_mbuf *mbufs[32];
  59         struct rte_ether_hdr *eth_hdr;
  60         struct rte_flow_error error;
  61         uint16_t nb_rx;
  62         uint16_t i;
  63         uint16_t j;
  64         int ret;
  65
  66         while (!force_quit) {
  67                 for (i = 0; i < nr_queues; i++) {
  68                         nb_rx = rte_eth_rx_burst(port_id,
  69                                                 i, mbufs, 32);
  70                         if (nb_rx) {
  71                                 for (j = 0; j < nb_rx; j++) {
  72                                         struct rte_mbuf *m = mbufs[j];
  73
  74                                         eth_hdr = rte_pktmbuf_mtod(m,
  75                                                         struct rte_ether_hdr *);
  76                                         print_ether_addr("src=",
  77                                                         &eth_hdr->s_addr);
  78                                         print_ether_addr(" - dst=",
  79                                                         &eth_hdr->d_addr);
  80                                         printf(" - queue=0x%x",
  81                                                         (unsigned int)i);
  82                                         printf("\n");
  83
  84                                         rte_pktmbuf_free(m);
  85                                 }
  86                         }
  87                 }
  88         }
  89
  90         /* closing and releasing resources */
  91         rte_flow_flush(port_id, &error);
  92         ret = rte_eth_dev_stop(port_id);
  93         if (ret < 0)
  94                 printf("Failed to stop port %u: %s",
  95                        port_id, rte_strerror(-ret));
  96         rte_eth_dev_close(port_id);
  97         return ret;
  98 }
  99
 100 #define CHECK_INTERVAL 1000  /* 100ms */
 101 #define MAX_REPEAT_TIMES 90  /* 9s (90 * 100ms) in total */
 102
 103 static void
 104 assert_link_status(void)
 105 {
 106         struct rte_eth_link link;
 107         uint8_t rep_cnt = MAX_REPEAT_TIMES;
 108         int link_get_err = -EINVAL;
 109
 110         memset(&link, 0, sizeof(link));
 111         do {
 112                 link_get_err = rte_eth_link_get(port_id, &link);
 113                 if (link_get_err == 0 && link.link_status == ETH_LINK_UP)
 114                         break;
 115                 rte_delay_ms(CHECK_INTERVAL);
 116         } while (--rep_cnt);
 117
 118         if (link_get_err < 0)
 119                 rte_exit(EXIT_FAILURE, ":: error: link get is failing: %s\n",
 120                          rte_strerror(-link_get_err));
 121         if (link.link_status == ETH_LINK_DOWN)
 122                 rte_exit(EXIT_FAILURE, ":: error: link is still down\n");
 123 }
 124
 125 static void
 126 init_port(void)
 127 {
 128         int ret;
 129         uint16_t i;
 130         struct rte_eth_conf port_conf = {
 131                 .rxmode = {
 132                         .split_hdr_size = 0,
 133                 },
 134                 .txmode = {
 135                         .offloads =
 136                                 DEV_TX_OFFLOAD_VLAN_INSERT |
 137                                 DEV_TX_OFFLOAD_IPV4_CKSUM  |
 138                                 DEV_TX_OFFLOAD_UDP_CKSUM   |
 139                                 DEV_TX_OFFLOAD_TCP_CKSUM   |
 140                                 DEV_TX_OFFLOAD_SCTP_CKSUM  |
 141                                 DEV_TX_OFFLOAD_TCP_TSO,
 142                 },
 143         };
 144         struct rte_eth_txconf txq_conf;
 145         struct rte_eth_rxconf rxq_conf;
 146         struct rte_eth_dev_info dev_info;
 147
 148         ret = rte_eth_dev_info_get(port_id, &dev_info);
 149         if (ret != 0)
 150                 rte_exit(EXIT_FAILURE,
 151                         "Error during getting device (port %u) info: %s\n",
 152                         port_id, strerror(-ret));
 153
 154         port_conf.txmode.offloads &= dev_info.tx_offload_capa;
 155         printf(":: initializing port: %d\n", port_id);
 156         ret = rte_eth_dev_configure(port_id,
 157                                 nr_queues, nr_queues, &port_conf);
 158         if (ret < 0) {
 159                 rte_exit(EXIT_FAILURE,
 160                         ":: cannot configure device: err=%d, port=%u\n",
 161                         ret, port_id);
 162         }
 163
 164         rxq_conf = dev_info.default_rxconf;
 165         rxq_conf.offloads = port_conf.rxmode.offloads;
 166         for (i = 0; i < nr_queues; i++) {
 167                 ret = rte_eth_rx_queue_setup(port_id, i, 512,
 168                                      rte_eth_dev_socket_id(port_id),
 169                                      &rxq_conf,
 170                                      mbuf_pool);
 171                 if (ret < 0) {
 172                         rte_exit(EXIT_FAILURE,
 173                                 ":: Rx queue setup failed: err=%d, port=%u\n",
 174                                 ret, port_id);
 175                 }
 176         }
 177
 178         txq_conf = dev_info.default_txconf;
 179         txq_conf.offloads = port_conf.txmode.offloads;
 180
 181         for (i = 0; i < nr_queues; i++) {
 182                 ret = rte_eth_tx_queue_setup(port_id, i, 512,
 183                                 rte_eth_dev_socket_id(port_id),
 184                                 &txq_conf);
 185                 if (ret < 0) {
 186                         rte_exit(EXIT_FAILURE,
 187                                 ":: Tx queue setup failed: err=%d, port=%u\n",
 188                                 ret, port_id);
 189                 }
 190         }
 191
 192         ret = rte_eth_promiscuous_enable(port_id);
 193         if (ret != 0)
 194                 rte_exit(EXIT_FAILURE,
 195                         ":: promiscuous mode enable failed: err=%s, port=%u\n",
 196                         rte_strerror(-ret), port_id);
 197
 198         ret = rte_eth_dev_start(port_id);
 199         if (ret < 0) {
 200                 rte_exit(EXIT_FAILURE,
 201                         "rte_eth_dev_start:err=%d, port=%u\n",
 202                         ret, port_id);
 203         }
 204
 205         assert_link_status();
 206
 207         printf(":: initializing port: %d done\n", port_id);
 208 }
 209
 210 static void
 211 signal_handler(int signum)
 212 {
 213         if (signum == SIGINT || signum == SIGTERM) {
 214                 printf("\n\nSignal %d received, preparing to exit...\n",
 215                                 signum);
 216                 force_quit = true;
 217         }
 218 }
 219
 220 int
 221 main(int argc, char **argv)
 222 {
 223         int ret;
 224         uint16_t nr_ports;
 225         struct rte_flow_error error;
 226
 227         ret = rte_eal_init(argc, argv);
 228         if (ret < 0)
 229                 rte_exit(EXIT_FAILURE, ":: invalid EAL arguments\n");
 230
 231         force_quit = false;
 232         signal(SIGINT, signal_handler);
 233         signal(SIGTERM, signal_handler);
 234
 235         nr_ports = rte_eth_dev_count_avail();
 236         if (nr_ports == 0)
 237                 rte_exit(EXIT_FAILURE, ":: no Ethernet ports found\n");
 238         port_id = 0;
 239         if (nr_ports != 1) {
 240                 printf(":: warn: %d ports detected, but we use only one: port %u\n",
 241                         nr_ports, port_id);
 242         }
 243         mbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", 4096, 128, 0,
 244                                             RTE_MBUF_DEFAULT_BUF_SIZE,
 245                                             rte_socket_id());
 246         if (mbuf_pool == NULL)
 247                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 248
 249         init_port();
 250
 251         /* create flow for send packet with */
 252         flow = generate_ipv4_flow(port_id, selected_queue,
 253                                 SRC_IP, EMPTY_MASK,
 254                                 DEST_IP, FULL_MASK, &error);
 255         if (!flow) {
 256                 printf("Flow can't be created %d message: %s\n",
 257                         error.type,
 258                         error.message ? error.message : "(no stated reason)");
 259                 rte_exit(EXIT_FAILURE, "error in creating flow");
 260         }
 261
 262         return main_loop();
 263 }