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