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 128
  24 #define PORT_TX_QUEUE_SIZE 256
  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
  99         memset(&cfg_port, 0, sizeof(cfg_port));
 100         cfg_port.txmode.mq_mode = ETH_MQ_TX_NONE;
 101
 102         for (idx_port = 0; idx_port < cnt_ports; idx_port++) {
 103                 struct app_port *ptr_port = &app_cfg->ports[idx_port];
 104
 105                 rte_eth_dev_info_get(idx_port, &dev_info);
 106                 size_pktpool = dev_info.rx_desc_lim.nb_max +
 107                         dev_info.tx_desc_lim.nb_max + PKTPOOL_EXTRA_SIZE;
 108
 109                 snprintf(str_name, 16, "pkt_pool%i", idx_port);
 110                 ptr_port->pkt_pool = rte_pktmbuf_pool_create(
 111                         str_name,
 112                         size_pktpool, PKTPOOL_CACHE,
 113                         0,
 114                         RTE_MBUF_DEFAULT_BUF_SIZE,
 115                         rte_socket_id()
 116                         );
 117                 if (ptr_port->pkt_pool == NULL)
 118                         rte_exit(EXIT_FAILURE,
 119                                 "rte_pktmbuf_pool_create failed"
 120                                 );
 121
 122                 printf("Init port %i..\n", idx_port);
 123                 ptr_port->port_active = 1;
 124                 ptr_port->port_dirty = 0;
 125                 ptr_port->idx_port = idx_port;
 126
 127                 if (rte_eth_dev_configure(idx_port, 1, 1, &cfg_port) < 0)
 128                         rte_exit(EXIT_FAILURE,
 129                                  "rte_eth_dev_configure failed");
 130                 if (rte_eth_dev_adjust_nb_rx_tx_desc(idx_port, &nb_rxd,
 131                                                      &nb_txd) < 0)
 132                         rte_exit(EXIT_FAILURE,
 133                                  "rte_eth_dev_adjust_nb_rx_tx_desc failed");
 134                 if (rte_eth_rx_queue_setup(
 135                             idx_port, 0, nb_rxd,
 136                             rte_eth_dev_socket_id(idx_port), NULL,
 137                             ptr_port->pkt_pool) < 0)
 138                         rte_exit(EXIT_FAILURE,
 139                                  "rte_eth_rx_queue_setup failed"
 140                                 );
 141                 if (rte_eth_tx_queue_setup(
 142                             idx_port, 0, nb_txd,
 143                             rte_eth_dev_socket_id(idx_port), NULL) < 0)
 144                         rte_exit(EXIT_FAILURE,
 145                                  "rte_eth_tx_queue_setup failed"
 146                                 );
 147                 if (rte_eth_dev_start(idx_port) < 0)
 148                         rte_exit(EXIT_FAILURE,
 149                                  "%s:%i: rte_eth_dev_start failed",
 150                                  __FILE__, __LINE__
 151                                 );
 152                 rte_eth_macaddr_get(idx_port, &ptr_port->mac_addr);
 153                 rte_spinlock_init(&ptr_port->lock);
 154         }
 155 }
 156
 157 static void process_frame(struct app_port *ptr_port,
 158         struct rte_mbuf *ptr_frame)
 159 {
 160         struct ether_hdr *ptr_mac_hdr;
 161
 162         ptr_mac_hdr = rte_pktmbuf_mtod(ptr_frame, struct ether_hdr *);
 163         ether_addr_copy(&ptr_mac_hdr->s_addr, &ptr_mac_hdr->d_addr);
 164         ether_addr_copy(&ptr_port->mac_addr, &ptr_mac_hdr->s_addr);
 165 }
 166
 167 static int slave_main(__attribute__((unused)) void *ptr_data)
 168 {
 169         struct app_port *ptr_port;
 170         struct rte_mbuf *ptr_frame;
 171         struct txq_port *txq;
 172
 173         uint16_t cnt_recv_frames;
 174         uint16_t idx_frame;
 175         uint16_t cnt_sent;
 176         uint16_t idx_port;
 177         uint16_t lock_result;
 178
 179         while (app_cfg.exit_now == 0) {
 180                 for (idx_port = 0; idx_port < app_cfg.cnt_ports; idx_port++) {
 181                         /* Check that port is active and unlocked */
 182                         ptr_port = &app_cfg.ports[idx_port];
 183                         lock_result = rte_spinlock_trylock(&ptr_port->lock);
 184                         if (lock_result == 0)
 185                                 continue;
 186                         if (ptr_port->port_active == 0) {
 187                                 rte_spinlock_unlock(&ptr_port->lock);
 188                                 continue;
 189                         }
 190                         txq = &ptr_port->txq;
 191
 192                         /* MAC address was updated */
 193                         if (ptr_port->port_dirty == 1) {
 194                                 rte_eth_macaddr_get(ptr_port->idx_port,
 195                                         &ptr_port->mac_addr);
 196                                 ptr_port->port_dirty = 0;
 197                         }
 198
 199                         /* Incoming frames */
 200                         cnt_recv_frames = rte_eth_rx_burst(
 201                                 ptr_port->idx_port, 0,
 202                                 &txq->buf_frames[txq->cnt_unsent],
 203                                 RTE_DIM(txq->buf_frames) - txq->cnt_unsent
 204                                 );
 205                         if (cnt_recv_frames > 0) {
 206                                 for (idx_frame = 0;
 207                                         idx_frame < cnt_recv_frames;
 208                                         idx_frame++) {
 209                                         ptr_frame = txq->buf_frames[
 210                                                 idx_frame + txq->cnt_unsent];
 211                                         process_frame(ptr_port, ptr_frame);
 212                                 }
 213                                 txq->cnt_unsent += cnt_recv_frames;
 214                         }
 215
 216                         /* Outgoing frames */
 217                         if (txq->cnt_unsent > 0) {
 218                                 cnt_sent = rte_eth_tx_burst(
 219                                         ptr_port->idx_port, 0,
 220                                         txq->buf_frames,
 221                                         txq->cnt_unsent
 222                                         );
 223                                 /* Shuffle up unsent frame pointers */
 224                                 for (idx_frame = cnt_sent;
 225                                         idx_frame < txq->cnt_unsent;
 226                                         idx_frame++)
 227                                         txq->buf_frames[idx_frame - cnt_sent] =
 228                                                 txq->buf_frames[idx_frame];
 229                                 txq->cnt_unsent -= cnt_sent;
 230                         }
 231                         rte_spinlock_unlock(&ptr_port->lock);
 232                 } /* end for( idx_port ) */
 233         } /* end for(;;) */
 234
 235         return 0;
 236 }
 237
 238 int main(int argc, char **argv)
 239 {
 240         int cnt_args_parsed;
 241         uint32_t id_core;
 242         uint32_t cnt_ports;
 243
 244         /* Init runtime environment */
 245         cnt_args_parsed = rte_eal_init(argc, argv);
 246         if (cnt_args_parsed < 0)
 247                 rte_exit(EXIT_FAILURE, "rte_eal_init(): Failed");
 248
 249         cnt_ports = rte_eth_dev_count();
 250         printf("Number of NICs: %i\n", cnt_ports);
 251         if (cnt_ports == 0)
 252                 rte_exit(EXIT_FAILURE, "No available NIC ports!\n");
 253         if (cnt_ports > MAX_PORTS) {
 254                 printf("Info: Using only %i of %i ports\n",
 255                         cnt_ports, MAX_PORTS
 256                         );
 257                 cnt_ports = MAX_PORTS;
 258         }
 259
 260         setup_ports(&app_cfg, cnt_ports);
 261
 262         app_cfg.exit_now = 0;
 263         app_cfg.cnt_ports = cnt_ports;
 264
 265         if (rte_lcore_count() < 2)
 266                 rte_exit(EXIT_FAILURE, "No available slave core!\n");
 267         /* Assume there is an available slave.. */
 268         id_core = rte_lcore_id();
 269         id_core = rte_get_next_lcore(id_core, 1, 1);
 270         rte_eal_remote_launch(slave_main, NULL, id_core);
 271
 272         ethapp_main();
 273
 274         app_cfg.exit_now = 1;
 275         RTE_LCORE_FOREACH_SLAVE(id_core) {
 276                 if (rte_eal_wait_lcore(id_core) < 0)
 277                         return -1;
 278         }
 279
 280         return 0;
 281 }