examples/flow_filtering/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2017 Mellanox.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of Mellanox. nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <stdint.h>
  37 #include <inttypes.h>
  38 #include <sys/types.h>
  39 #include <sys/queue.h>
  40 #include <netinet/in.h>
  41 #include <setjmp.h>
  42 #include <stdarg.h>
  43 #include <ctype.h>
  44 #include <errno.h>
  45 #include <getopt.h>
  46 #include <signal.h>
  47 #include <stdbool.h>
  48
  49 #include <rte_eal.h>
  50 #include <rte_common.h>
  51 #include <rte_malloc.h>
  52 #include <rte_ether.h>
  53 #include <rte_ethdev.h>
  54 #include <rte_mempool.h>
  55 #include <rte_mbuf.h>
  56 #include <rte_net.h>
  57 #include <rte_flow.h>
  58
  59 static volatile bool force_quit;
  60
  61 static uint8_t port_id;
  62 static uint16_t nr_queues = 5;
  63 static uint8_t selected_queue = 1;
  64 struct rte_mempool *mbuf_pool;
  65 struct rte_flow *flow;
  66
  67 #define SRC_IP ((0<<24) + (0<<16) + (0<<8) + 0) /* src ip = 0.0.0.0 */
  68 #define DEST_IP ((192<<24) + (168<<16) + (1<<8) + 1) /* dest ip = 192.168.1.1 */
  69 #define FULL_MASK 0xffffffff /* full mask */
  70 #define EMPTY_MASK 0x0 /* empty mask */
  71
  72 #include "flow_blocks.c"
  73
  74 static inline void
  75 print_ether_addr(const char *what, struct ether_addr *eth_addr)
  76 {
  77         char buf[ETHER_ADDR_FMT_SIZE];
  78         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
  79         printf("%s%s", what, buf);
  80 }
  81
  82 static void
  83 main_loop(void)
  84 {
  85         struct rte_mbuf *mbufs[32];
  86         struct ether_hdr *eth_hdr;
  87         struct rte_flow_error error;
  88         uint16_t nb_rx;
  89         uint16_t i;
  90         uint16_t j;
  91
  92         while (!force_quit) {
  93                 for (i = 0; i < nr_queues; i++) {
  94                         nb_rx = rte_eth_rx_burst(port_id,
  95                                                 i, mbufs, 32);
  96                         if (nb_rx) {
  97                                 for (j = 0; j < nb_rx; j++) {
  98                                         struct rte_mbuf *m = mbufs[j];
  99
 100                                         eth_hdr = rte_pktmbuf_mtod(m,
 101                                                         struct ether_hdr *);
 102                                         print_ether_addr("src=",
 103                                                         &eth_hdr->s_addr);
 104                                         print_ether_addr(" - dst=",
 105                                                         &eth_hdr->d_addr);
 106                                         printf(" - queue=0x%x",
 107                                                         (unsigned int)i);
 108                                         printf("\n");
 109
 110                                         rte_pktmbuf_free(m);
 111                                 }
 112                         }
 113                 }
 114         }
 115
 116         /* closing and releasing resources */
 117         rte_flow_flush(port_id, &error);
 118         rte_eth_dev_stop(port_id);
 119         rte_eth_dev_close(port_id);
 120 }
 121
 122 static void
 123 assert_link_status(void)
 124 {
 125         struct rte_eth_link link;
 126
 127         memset(&link, 0, sizeof(link));
 128         rte_eth_link_get(port_id, &link);
 129         if (link.link_status == ETH_LINK_DOWN)
 130                 rte_exit(EXIT_FAILURE, ":: error: link is still down\n");
 131 }
 132
 133 static void
 134 init_port(void)
 135 {
 136         int ret;
 137         uint16_t i;
 138         struct rte_eth_conf port_conf = {
 139                 .rxmode = {
 140                         .split_hdr_size = 0,
 141                         /**< Header Split disabled */
 142                         .header_split   = 0,
 143                         /**< IP checksum offload disabled */
 144                         .hw_ip_checksum = 0,
 145                         /**< VLAN filtering disabled */
 146                         .hw_vlan_filter = 0,
 147                         /**< Jumbo Frame Support disabled */
 148                         .jumbo_frame    = 0,
 149                         /**< CRC stripped by hardware */
 150                         .hw_strip_crc   = 1,
 151                 },
 152                 /*
 153                  * Initialize fdir_conf of rte_eth_conf.
 154                  * Fdir is used in flow filtering for I40e,
 155                  * so rte_flow rules involve some fdir
 156                  * configurations. In long term it's better
 157                  * that drivers don't require any fdir
 158                  * configuration for rte_flow, but we need to
 159                  * get this workaround so that sample app can
 160                  * run on I40e.
 161                  */
 162                 .fdir_conf = {
 163                         .mode = RTE_FDIR_MODE_PERFECT,
 164                         .pballoc = RTE_FDIR_PBALLOC_64K,
 165                         .status = RTE_FDIR_REPORT_STATUS,
 166                         .drop_queue = 127,
 167                 },
 168         };
 169
 170         printf(":: initializing port: %d\n", port_id);
 171         ret = rte_eth_dev_configure(port_id,
 172                                 nr_queues, nr_queues, &port_conf);
 173         if (ret < 0) {
 174                 rte_exit(EXIT_FAILURE,
 175                         ":: cannot configure device: err=%d, port=%u\n",
 176                         ret, port_id);
 177         }
 178
 179         /* only set Rx queues: something we care only so far */
 180         for (i = 0; i < nr_queues; i++) {
 181                 ret = rte_eth_rx_queue_setup(port_id, i, 512,
 182                                      rte_eth_dev_socket_id(port_id),
 183                                      NULL,
 184                                      mbuf_pool);
 185                 if (ret < 0) {
 186                         rte_exit(EXIT_FAILURE,
 187                                 ":: Rx queue setup failed: err=%d, port=%u\n",
 188                                 ret, port_id);
 189                 }
 190         }
 191
 192         rte_eth_promiscuous_enable(port_id);
 193         ret = rte_eth_dev_start(port_id);
 194         if (ret < 0) {
 195                 rte_exit(EXIT_FAILURE,
 196                         "rte_eth_dev_start:err=%d, port=%u\n",
 197                         ret, port_id);
 198         }
 199
 200         assert_link_status();
 201
 202         printf(":: initializing port: %d done\n", port_id);
 203 }
 204
 205 static void
 206 signal_handler(int signum)
 207 {
 208         if (signum == SIGINT || signum == SIGTERM) {
 209                 printf("\n\nSignal %d received, preparing to exit...\n",
 210                                 signum);
 211                 force_quit = true;
 212         }
 213 }
 214
 215 int
 216 main(int argc, char **argv)
 217 {
 218         int ret;
 219         uint8_t nr_ports;
 220         struct rte_flow_error error;
 221
 222         ret = rte_eal_init(argc, argv);
 223         if (ret < 0)
 224                 rte_exit(EXIT_FAILURE, ":: invalid EAL arguments\n");
 225
 226         force_quit = false;
 227         signal(SIGINT, signal_handler);
 228         signal(SIGTERM, signal_handler);
 229
 230         nr_ports = rte_eth_dev_count();
 231         if (nr_ports == 0)
 232                 rte_exit(EXIT_FAILURE, ":: no Ethernet ports found\n");
 233         port_id = 0;
 234         if (nr_ports != 1) {
 235                 printf(":: warn: %d ports detected, but we use only one: port %u\n",
 236                         nr_ports, port_id);
 237         }
 238         mbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", 4096, 128, 0,
 239                                             RTE_MBUF_DEFAULT_BUF_SIZE,
 240                                             rte_socket_id());
 241         if (mbuf_pool == NULL)
 242                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 243
 244         init_port();
 245
 246         /* create flow for send packet with */
 247         flow = generate_ipv4_flow(port_id, selected_queue,
 248                                 SRC_IP, EMPTY_MASK,
 249                                 DEST_IP, FULL_MASK, &error);
 250         if (!flow) {
 251                 printf("Flow can't be created %d message: %s\n",
 252                         error.type,
 253                         error.message ? error.message : "(no stated reason)");
 254                 rte_exit(EXIT_FAILURE, "error in creating flow");
 255         }
 256
 257         main_loop();
 258
 259         return 0;
 260 }