examples/ethtool/ethtool-app/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
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  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
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  19  *       from this software without specific prior written permission.
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  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37
  38 #include <rte_common.h>
  39 #include <rte_spinlock.h>
  40 #include <rte_eal.h>
  41 #include <rte_ethdev.h>
  42 #include <rte_ether.h>
  43 #include <rte_ip.h>
  44 #include <rte_memory.h>
  45 #include <rte_mempool.h>
  46 #include <rte_mbuf.h>
  47
  48 #include "ethapp.h"
  49
  50 #define MAX_PORTS RTE_MAX_ETHPORTS
  51 #define MAX_BURST_LENGTH 32
  52 #define PORT_RX_QUEUE_SIZE 128
  53 #define PORT_TX_QUEUE_SIZE 256
  54 #define PKTPOOL_EXTRA_SIZE 512
  55 #define PKTPOOL_CACHE 32
  56
  57
  58 struct txq_port {
  59         uint16_t cnt_unsent;
  60         struct rte_mbuf *buf_frames[MAX_BURST_LENGTH];
  61 };
  62
  63 struct app_port {
  64         struct ether_addr mac_addr;
  65         struct txq_port txq;
  66         rte_spinlock_t lock;
  67         int port_active;
  68         int port_dirty;
  69         int idx_port;
  70         struct rte_mempool *pkt_pool;
  71 };
  72
  73 struct app_config {
  74         struct app_port ports[MAX_PORTS];
  75         int cnt_ports;
  76         int exit_now;
  77 };
  78
  79
  80 struct app_config app_cfg;
  81
  82
  83 void lock_port(int idx_port)
  84 {
  85         struct app_port *ptr_port = &app_cfg.ports[idx_port];
  86
  87         rte_spinlock_lock(&ptr_port->lock);
  88 }
  89
  90 void unlock_port(int idx_port)
  91 {
  92         struct app_port *ptr_port = &app_cfg.ports[idx_port];
  93
  94         rte_spinlock_unlock(&ptr_port->lock);
  95 }
  96
  97 void mark_port_active(int idx_port)
  98 {
  99         struct app_port *ptr_port = &app_cfg.ports[idx_port];
 100
 101         ptr_port->port_active = 1;
 102 }
 103
 104 void mark_port_inactive(int idx_port)
 105 {
 106         struct app_port *ptr_port = &app_cfg.ports[idx_port];
 107
 108         ptr_port->port_active = 0;
 109 }
 110
 111 void mark_port_newmac(int idx_port)
 112 {
 113         struct app_port *ptr_port = &app_cfg.ports[idx_port];
 114
 115         ptr_port->port_dirty = 1;
 116 }
 117
 118 static void setup_ports(struct app_config *app_cfg, int cnt_ports)
 119 {
 120         int idx_port;
 121         int size_pktpool;
 122         struct rte_eth_conf cfg_port;
 123         struct rte_eth_dev_info dev_info;
 124         char str_name[16];
 125
 126         memset(&cfg_port, 0, sizeof(cfg_port));
 127         cfg_port.txmode.mq_mode = ETH_MQ_TX_NONE;
 128
 129         for (idx_port = 0; idx_port < cnt_ports; idx_port++) {
 130                 struct app_port *ptr_port = &app_cfg->ports[idx_port];
 131
 132                 rte_eth_dev_info_get(idx_port, &dev_info);
 133                 size_pktpool = dev_info.rx_desc_lim.nb_max +
 134                         dev_info.tx_desc_lim.nb_max + PKTPOOL_EXTRA_SIZE;
 135
 136                 snprintf(str_name, 16, "pkt_pool%i", idx_port);
 137                 ptr_port->pkt_pool = rte_pktmbuf_pool_create(
 138                         str_name,
 139                         size_pktpool, PKTPOOL_CACHE,
 140                         0,
 141                         RTE_MBUF_DEFAULT_BUF_SIZE,
 142                         rte_socket_id()
 143                         );
 144                 if (ptr_port->pkt_pool == NULL)
 145                         rte_exit(EXIT_FAILURE,
 146                                 "rte_pktmbuf_pool_create failed"
 147                                 );
 148
 149                 printf("Init port %i..\n", idx_port);
 150                 ptr_port->port_active = 1;
 151                 ptr_port->port_dirty = 0;
 152                 ptr_port->idx_port = idx_port;
 153
 154                 if (rte_eth_dev_configure(idx_port, 1, 1, &cfg_port) < 0)
 155                         rte_exit(EXIT_FAILURE,
 156                                  "rte_eth_dev_configure failed");
 157                 if (rte_eth_rx_queue_setup(
 158                             idx_port, 0, PORT_RX_QUEUE_SIZE,
 159                             rte_eth_dev_socket_id(idx_port), NULL,
 160                             ptr_port->pkt_pool) < 0)
 161                         rte_exit(EXIT_FAILURE,
 162                                  "rte_eth_rx_queue_setup failed"
 163                                 );
 164                 if (rte_eth_tx_queue_setup(
 165                             idx_port, 0, PORT_TX_QUEUE_SIZE,
 166                             rte_eth_dev_socket_id(idx_port), NULL) < 0)
 167                         rte_exit(EXIT_FAILURE,
 168                                  "rte_eth_tx_queue_setup failed"
 169                                 );
 170                 if (rte_eth_dev_start(idx_port) < 0)
 171                         rte_exit(EXIT_FAILURE,
 172                                  "%s:%i: rte_eth_dev_start failed",
 173                                  __FILE__, __LINE__
 174                                 );
 175                 rte_eth_promiscuous_enable(idx_port);
 176                 rte_eth_macaddr_get(idx_port, &ptr_port->mac_addr);
 177                 rte_spinlock_init(&ptr_port->lock);
 178         }
 179 }
 180
 181 static void process_frame(struct app_port *ptr_port,
 182         struct rte_mbuf *ptr_frame)
 183 {
 184         struct ether_hdr *ptr_mac_hdr;
 185
 186         ptr_mac_hdr = rte_pktmbuf_mtod(ptr_frame, struct ether_hdr *);
 187         ether_addr_copy(&ptr_mac_hdr->s_addr, &ptr_mac_hdr->d_addr);
 188         ether_addr_copy(&ptr_port->mac_addr, &ptr_mac_hdr->s_addr);
 189 }
 190
 191 static int slave_main(__attribute__((unused)) void *ptr_data)
 192 {
 193         struct app_port *ptr_port;
 194         struct rte_mbuf *ptr_frame;
 195         struct txq_port *txq;
 196
 197         uint16_t cnt_recv_frames;
 198         uint16_t idx_frame;
 199         uint16_t cnt_sent;
 200         uint16_t idx_port;
 201         uint16_t lock_result;
 202
 203         while (app_cfg.exit_now == 0) {
 204                 for (idx_port = 0; idx_port < app_cfg.cnt_ports; idx_port++) {
 205                         /* Check that port is active and unlocked */
 206                         ptr_port = &app_cfg.ports[idx_port];
 207                         lock_result = rte_spinlock_trylock(&ptr_port->lock);
 208                         if (lock_result == 0)
 209                                 continue;
 210                         if (ptr_port->port_active == 0) {
 211                                 rte_spinlock_unlock(&ptr_port->lock);
 212                                 continue;
 213                         }
 214                         txq = &ptr_port->txq;
 215
 216                         /* MAC address was updated */
 217                         if (ptr_port->port_dirty == 1) {
 218                                 rte_eth_macaddr_get(ptr_port->idx_port,
 219                                         &ptr_port->mac_addr);
 220                                 ptr_port->port_dirty = 0;
 221                         }
 222
 223                         /* Incoming frames */
 224                         cnt_recv_frames = rte_eth_rx_burst(
 225                                 ptr_port->idx_port, 0,
 226                                 &txq->buf_frames[txq->cnt_unsent],
 227                                 RTE_DIM(txq->buf_frames) - txq->cnt_unsent
 228                                 );
 229                         if (cnt_recv_frames > 0) {
 230                                 for (idx_frame = 0;
 231                                         idx_frame < cnt_recv_frames;
 232                                         idx_frame++) {
 233                                         ptr_frame = txq->buf_frames[
 234                                                 idx_frame + txq->cnt_unsent];
 235                                         process_frame(ptr_port, ptr_frame);
 236                                 }
 237                                 txq->cnt_unsent += cnt_recv_frames;
 238                         }
 239
 240                         /* Outgoing frames */
 241                         if (txq->cnt_unsent > 0) {
 242                                 cnt_sent = rte_eth_tx_burst(
 243                                         ptr_port->idx_port, 0,
 244                                         txq->buf_frames,
 245                                         txq->cnt_unsent
 246                                         );
 247                                 /* Shuffle up unsent frame pointers */
 248                                 for (idx_frame = cnt_sent;
 249                                         idx_frame < txq->cnt_unsent;
 250                                         idx_frame++)
 251                                         txq->buf_frames[idx_frame - cnt_sent] =
 252                                                 txq->buf_frames[idx_frame];
 253                                 txq->cnt_unsent -= cnt_sent;
 254                         }
 255                         rte_spinlock_unlock(&ptr_port->lock);
 256                 } /* end for( idx_port ) */
 257         } /* end for(;;) */
 258
 259         return 0;
 260 }
 261
 262 int main(int argc, char **argv)
 263 {
 264         int cnt_args_parsed;
 265         uint32_t id_core;
 266         uint32_t cnt_ports;
 267
 268         /* Init runtime enviornment */
 269         cnt_args_parsed = rte_eal_init(argc, argv);
 270         if (cnt_args_parsed < 0)
 271                 rte_exit(EXIT_FAILURE, "rte_eal_init(): Failed");
 272
 273         cnt_ports = rte_eth_dev_count();
 274         printf("Number of NICs: %i\n", cnt_ports);
 275         if (cnt_ports == 0)
 276                 rte_exit(EXIT_FAILURE, "No available NIC ports!\n");
 277         if (cnt_ports > MAX_PORTS) {
 278                 printf("Info: Using only %i of %i ports\n",
 279                         cnt_ports, MAX_PORTS
 280                         );
 281                 cnt_ports = MAX_PORTS;
 282         }
 283
 284         setup_ports(&app_cfg, cnt_ports);
 285
 286         app_cfg.exit_now = 0;
 287         app_cfg.cnt_ports = cnt_ports;
 288
 289         if (rte_lcore_count() < 2)
 290                 rte_exit(EXIT_FAILURE, "No available slave core!\n");
 291         /* Assume there is an available slave.. */
 292         id_core = rte_lcore_id();
 293         id_core = rte_get_next_lcore(id_core, 1, 1);
 294         rte_eal_remote_launch(slave_main, NULL, id_core);
 295
 296         ethapp_main();
 297
 298         app_cfg.exit_now = 1;
 299         RTE_LCORE_FOREACH_SLAVE(id_core) {
 300                 if (rte_eal_wait_lcore(id_core) < 0)
 301                         return -1;
 302         }
 303
 304         return 0;
 305 }