examples/ethtool/ethtool-app/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2015 Intel Corporation
   3  */
   4
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8
   9 #include <rte_common.h>
  10 #include <rte_spinlock.h>
  11 #include <rte_eal.h>
  12 #include <rte_ethdev.h>
  13 #include <rte_ether.h>
  14 #include <rte_ip.h>
  15 #include <rte_memory.h>
  16 #include <rte_mempool.h>
  17 #include <rte_mbuf.h>
  18
  19 #include "ethapp.h"
  20
  21 #define MAX_PORTS RTE_MAX_ETHPORTS
  22 #define MAX_BURST_LENGTH 32
  23 #define PORT_RX_QUEUE_SIZE 1024
  24 #define PORT_TX_QUEUE_SIZE 1024
  25 #define PKTPOOL_EXTRA_SIZE 512
  26 #define PKTPOOL_CACHE 32
  27
  28
  29 struct txq_port {
  30         uint16_t cnt_unsent;
  31         struct rte_mbuf *buf_frames[MAX_BURST_LENGTH];
  32 };
  33
  34 struct app_port {
  35         struct ether_addr mac_addr;
  36         struct txq_port txq;
  37         rte_spinlock_t lock;
  38         int port_active;
  39         int port_dirty;
  40         int idx_port;
  41         struct rte_mempool *pkt_pool;
  42 };
  43
  44 struct app_config {
  45         struct app_port ports[MAX_PORTS];
  46         int cnt_ports;
  47         int exit_now;
  48 };
  49
  50
  51 struct app_config app_cfg;
  52
  53
  54 void lock_port(int idx_port)
  55 {
  56         struct app_port *ptr_port = &app_cfg.ports[idx_port];
  57
  58         rte_spinlock_lock(&ptr_port->lock);
  59 }
  60
  61 void unlock_port(int idx_port)
  62 {
  63         struct app_port *ptr_port = &app_cfg.ports[idx_port];
  64
  65         rte_spinlock_unlock(&ptr_port->lock);
  66 }
  67
  68 void mark_port_active(int idx_port)
  69 {
  70         struct app_port *ptr_port = &app_cfg.ports[idx_port];
  71
  72         ptr_port->port_active = 1;
  73 }
  74
  75 void mark_port_inactive(int idx_port)
  76 {
  77         struct app_port *ptr_port = &app_cfg.ports[idx_port];
  78
  79         ptr_port->port_active = 0;
  80 }
  81
  82 void mark_port_newmac(int idx_port)
  83 {
  84         struct app_port *ptr_port = &app_cfg.ports[idx_port];
  85
  86         ptr_port->port_dirty = 1;
  87 }
  88
  89 static void setup_ports(struct app_config *app_cfg, int cnt_ports)
  90 {
  91         int idx_port;
  92         int size_pktpool;
  93         struct rte_eth_conf cfg_port;
  94         struct rte_eth_dev_info dev_info;
  95         char str_name[16];
  96         uint16_t nb_rxd = PORT_RX_QUEUE_SIZE;
  97         uint16_t nb_txd = PORT_TX_QUEUE_SIZE;
  98         struct rte_eth_txconf txconf;
  99
 100         memset(&cfg_port, 0, sizeof(cfg_port));
 101         cfg_port.txmode.mq_mode = ETH_MQ_TX_NONE;
 102         cfg_port.rxmode.ignore_offload_bitfield = 1;
 103
 104         for (idx_port = 0; idx_port < cnt_ports; idx_port++) {
 105                 struct app_port *ptr_port = &app_cfg->ports[idx_port];
 106
 107                 rte_eth_dev_info_get(idx_port, &dev_info);
 108                 size_pktpool = dev_info.rx_desc_lim.nb_max +
 109                         dev_info.tx_desc_lim.nb_max + PKTPOOL_EXTRA_SIZE;
 110
 111                 snprintf(str_name, 16, "pkt_pool%i", idx_port);
 112                 ptr_port->pkt_pool = rte_pktmbuf_pool_create(
 113                         str_name,
 114                         size_pktpool, PKTPOOL_CACHE,
 115                         0,
 116                         RTE_MBUF_DEFAULT_BUF_SIZE,
 117                         rte_socket_id()
 118                         );
 119                 if (ptr_port->pkt_pool == NULL)
 120                         rte_exit(EXIT_FAILURE,
 121                                 "rte_pktmbuf_pool_create failed"
 122                                 );
 123
 124                 printf("Init port %i..\n", idx_port);
 125                 ptr_port->port_active = 1;
 126                 ptr_port->port_dirty = 0;
 127                 ptr_port->idx_port = idx_port;
 128
 129                 if (rte_eth_dev_configure(idx_port, 1, 1, &cfg_port) < 0)
 130                         rte_exit(EXIT_FAILURE,
 131                                  "rte_eth_dev_configure failed");
 132                 if (rte_eth_dev_adjust_nb_rx_tx_desc(idx_port, &nb_rxd,
 133                                                      &nb_txd) < 0)
 134                         rte_exit(EXIT_FAILURE,
 135                                  "rte_eth_dev_adjust_nb_rx_tx_desc failed");
 136
 137                 if (rte_eth_rx_queue_setup(
 138                             idx_port, 0, nb_rxd,
 139                             rte_eth_dev_socket_id(idx_port), NULL,
 140                             ptr_port->pkt_pool) < 0)
 141                         rte_exit(EXIT_FAILURE,
 142                                  "rte_eth_rx_queue_setup failed"
 143                                 );
 144                 txconf = dev_info.default_txconf;
 145                 txconf.txq_flags = ETH_TXQ_FLAGS_IGNORE;
 146                 if (rte_eth_tx_queue_setup(
 147                             idx_port, 0, nb_txd,
 148                             rte_eth_dev_socket_id(idx_port), &txconf) < 0)
 149                         rte_exit(EXIT_FAILURE,
 150                                  "rte_eth_tx_queue_setup failed"
 151                                 );
 152                 if (rte_eth_dev_start(idx_port) < 0)
 153                         rte_exit(EXIT_FAILURE,
 154                                  "%s:%i: rte_eth_dev_start failed",
 155                                  __FILE__, __LINE__
 156                                 );
 157                 rte_eth_macaddr_get(idx_port, &ptr_port->mac_addr);
 158                 rte_spinlock_init(&ptr_port->lock);
 159         }
 160 }
 161
 162 static void process_frame(struct app_port *ptr_port,
 163         struct rte_mbuf *ptr_frame)
 164 {
 165         struct ether_hdr *ptr_mac_hdr;
 166
 167         ptr_mac_hdr = rte_pktmbuf_mtod(ptr_frame, struct ether_hdr *);
 168         ether_addr_copy(&ptr_mac_hdr->s_addr, &ptr_mac_hdr->d_addr);
 169         ether_addr_copy(&ptr_port->mac_addr, &ptr_mac_hdr->s_addr);
 170 }
 171
 172 static int slave_main(__attribute__((unused)) void *ptr_data)
 173 {
 174         struct app_port *ptr_port;
 175         struct rte_mbuf *ptr_frame;
 176         struct txq_port *txq;
 177
 178         uint16_t cnt_recv_frames;
 179         uint16_t idx_frame;
 180         uint16_t cnt_sent;
 181         uint16_t idx_port;
 182         uint16_t lock_result;
 183
 184         while (app_cfg.exit_now == 0) {
 185                 for (idx_port = 0; idx_port < app_cfg.cnt_ports; idx_port++) {
 186                         /* Check that port is active and unlocked */
 187                         ptr_port = &app_cfg.ports[idx_port];
 188                         lock_result = rte_spinlock_trylock(&ptr_port->lock);
 189                         if (lock_result == 0)
 190                                 continue;
 191                         if (ptr_port->port_active == 0) {
 192                                 rte_spinlock_unlock(&ptr_port->lock);
 193                                 continue;
 194                         }
 195                         txq = &ptr_port->txq;
 196
 197                         /* MAC address was updated */
 198                         if (ptr_port->port_dirty == 1) {
 199                                 rte_eth_macaddr_get(ptr_port->idx_port,
 200                                         &ptr_port->mac_addr);
 201                                 ptr_port->port_dirty = 0;
 202                         }
 203
 204                         /* Incoming frames */
 205                         cnt_recv_frames = rte_eth_rx_burst(
 206                                 ptr_port->idx_port, 0,
 207                                 &txq->buf_frames[txq->cnt_unsent],
 208                                 RTE_DIM(txq->buf_frames) - txq->cnt_unsent
 209                                 );
 210                         if (cnt_recv_frames > 0) {
 211                                 for (idx_frame = 0;
 212                                         idx_frame < cnt_recv_frames;
 213                                         idx_frame++) {
 214                                         ptr_frame = txq->buf_frames[
 215                                                 idx_frame + txq->cnt_unsent];
 216                                         process_frame(ptr_port, ptr_frame);
 217                                 }
 218                                 txq->cnt_unsent += cnt_recv_frames;
 219                         }
 220
 221                         /* Outgoing frames */
 222                         if (txq->cnt_unsent > 0) {
 223                                 cnt_sent = rte_eth_tx_burst(
 224                                         ptr_port->idx_port, 0,
 225                                         txq->buf_frames,
 226                                         txq->cnt_unsent
 227                                         );
 228                                 /* Shuffle up unsent frame pointers */
 229                                 for (idx_frame = cnt_sent;
 230                                         idx_frame < txq->cnt_unsent;
 231                                         idx_frame++)
 232                                         txq->buf_frames[idx_frame - cnt_sent] =
 233                                                 txq->buf_frames[idx_frame];
 234                                 txq->cnt_unsent -= cnt_sent;
 235                         }
 236                         rte_spinlock_unlock(&ptr_port->lock);
 237                 } /* end for( idx_port ) */
 238         } /* end for(;;) */
 239
 240         return 0;
 241 }
 242
 243 int main(int argc, char **argv)
 244 {
 245         int cnt_args_parsed;
 246         uint32_t id_core;
 247         uint32_t cnt_ports;
 248
 249         /* Init runtime environment */
 250         cnt_args_parsed = rte_eal_init(argc, argv);
 251         if (cnt_args_parsed < 0)
 252                 rte_exit(EXIT_FAILURE, "rte_eal_init(): Failed");
 253
 254         cnt_ports = rte_eth_dev_count();
 255         printf("Number of NICs: %i\n", cnt_ports);
 256         if (cnt_ports == 0)
 257                 rte_exit(EXIT_FAILURE, "No available NIC ports!\n");
 258         if (cnt_ports > MAX_PORTS) {
 259                 printf("Info: Using only %i of %i ports\n",
 260                         cnt_ports, MAX_PORTS
 261                         );
 262                 cnt_ports = MAX_PORTS;
 263         }
 264
 265         setup_ports(&app_cfg, cnt_ports);
 266
 267         app_cfg.exit_now = 0;
 268         app_cfg.cnt_ports = cnt_ports;
 269
 270         if (rte_lcore_count() < 2)
 271                 rte_exit(EXIT_FAILURE, "No available slave core!\n");
 272         /* Assume there is an available slave.. */
 273         id_core = rte_lcore_id();
 274         id_core = rte_get_next_lcore(id_core, 1, 1);
 275         rte_eal_remote_launch(slave_main, NULL, id_core);
 276
 277         ethapp_main();
 278
 279         app_cfg.exit_now = 1;
 280         RTE_LCORE_FOREACH_SLAVE(id_core) {
 281                 if (rte_eal_wait_lcore(id_core) < 0)
 282                         return -1;
 283         }
 284
 285         return 0;
 286 }