examples/quota_watermark/qw/init.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <fcntl.h>
   6 #include <unistd.h>
   7 #include <sys/mman.h>
   8
   9 #include <rte_eal.h>
  10
  11 #include <rte_common.h>
  12 #include <rte_errno.h>
  13 #include <rte_ethdev.h>
  14 #include <rte_memzone.h>
  15 #include <rte_ring.h>
  16 #include <rte_string_fns.h>
  17
  18 #include "args.h"
  19 #include "init.h"
  20 #include "main.h"
  21 #include "../include/conf.h"
  22
  23
  24 static struct rte_eth_conf port_conf = {
  25                 .rxmode = {
  26                         .split_hdr_size = 0,
  27                 },
  28                 .txmode = {
  29                         .mq_mode = ETH_DCB_NONE,
  30                 },
  31 };
  32
  33 static struct rte_eth_fc_conf fc_conf = {
  34                 .mode       = RTE_FC_TX_PAUSE,
  35                 .high_water = 80 * 510 / 100,
  36                 .low_water  = 60 * 510 / 100,
  37                 .pause_time = 1337,
  38                 .send_xon   = 0,
  39 };
  40
  41
  42 void configure_eth_port(uint16_t port_id)
  43 {
  44         int ret;
  45         uint16_t nb_rxd = RX_DESC_PER_QUEUE;
  46         uint16_t nb_txd = TX_DESC_PER_QUEUE;
  47         struct rte_eth_rxconf rxq_conf;
  48         struct rte_eth_txconf txq_conf;
  49         struct rte_eth_dev_info dev_info;
  50         struct rte_eth_conf local_port_conf = port_conf;
  51
  52         rte_eth_dev_stop(port_id);
  53
  54         rte_eth_dev_info_get(port_id, &dev_info);
  55         if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
  56                 local_port_conf.txmode.offloads |=
  57                         DEV_TX_OFFLOAD_MBUF_FAST_FREE;
  58         ret = rte_eth_dev_configure(port_id, 1, 1, &local_port_conf);
  59         if (ret < 0)
  60                 rte_exit(EXIT_FAILURE, "Cannot configure port %u (error %d)\n",
  61                                 (unsigned int) port_id, ret);
  62
  63         ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, &nb_txd);
  64         if (ret < 0)
  65                 rte_exit(EXIT_FAILURE,
  66                                 "Cannot adjust number of descriptors for port %u (error %d)\n",
  67                                 (unsigned int) port_id, ret);
  68
  69         /* Initialize the port's RX queue */
  70         rxq_conf = dev_info.default_rxconf;
  71         rxq_conf.offloads = local_port_conf.rxmode.offloads;
  72         ret = rte_eth_rx_queue_setup(port_id, 0, nb_rxd,
  73                         rte_eth_dev_socket_id(port_id),
  74                         &rxq_conf,
  75                         mbuf_pool);
  76         if (ret < 0)
  77                 rte_exit(EXIT_FAILURE,
  78                                 "Failed to setup RX queue on port %u (error %d)\n",
  79                                 (unsigned int) port_id, ret);
  80
  81         /* Initialize the port's TX queue */
  82         txq_conf = dev_info.default_txconf;
  83         txq_conf.offloads = local_port_conf.txmode.offloads;
  84         ret = rte_eth_tx_queue_setup(port_id, 0, nb_txd,
  85                         rte_eth_dev_socket_id(port_id),
  86                         &txq_conf);
  87         if (ret < 0)
  88                 rte_exit(EXIT_FAILURE,
  89                                 "Failed to setup TX queue on port %u (error %d)\n",
  90                                 (unsigned int) port_id, ret);
  91
  92         /* Initialize the port's flow control */
  93         ret = rte_eth_dev_flow_ctrl_set(port_id, &fc_conf);
  94         if (ret < 0)
  95                 rte_exit(EXIT_FAILURE,
  96                                 "Failed to setup hardware flow control on port %u (error %d)\n",
  97                                 (unsigned int) port_id, ret);
  98
  99         /* Start the port */
 100         ret = rte_eth_dev_start(port_id);
 101         if (ret < 0)
 102                 rte_exit(EXIT_FAILURE, "Failed to start port %u (error %d)\n",
 103                                 (unsigned int) port_id, ret);
 104
 105         /* Put it in promiscuous mode */
 106         ret = rte_eth_promiscuous_enable(port_id);
 107         if (ret != 0)
 108                 rte_exit(EXIT_FAILURE,
 109                         "Failed to enable promiscuous mode for port %u: %s\n",
 110                         port_id, rte_strerror(-ret));
 111 }
 112
 113 void
 114 init_dpdk(void)
 115 {
 116         if (rte_eth_dev_count_avail() < 2)
 117                 rte_exit(EXIT_FAILURE, "Not enough ethernet port available\n");
 118 }
 119
 120 void init_ring(int lcore_id, uint16_t port_id)
 121 {
 122         struct rte_ring *ring;
 123         char ring_name[RTE_RING_NAMESIZE];
 124
 125         snprintf(ring_name, RTE_RING_NAMESIZE,
 126                         "core%d_port%d", lcore_id, port_id);
 127         ring = rte_ring_create(ring_name, RING_SIZE, rte_socket_id(),
 128                         RING_F_SP_ENQ | RING_F_SC_DEQ);
 129
 130         if (ring == NULL)
 131                 rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
 132
 133         *high_watermark = 80 * RING_SIZE / 100;
 134
 135         rings[lcore_id][port_id] = ring;
 136 }
 137
 138 void
 139 pair_ports(void)
 140 {
 141         uint16_t i, j;
 142
 143         /* Pair ports with their "closest neighbour" in the portmask */
 144         for (i = 0; i < RTE_MAX_ETHPORTS; i++)
 145                 if (is_bit_set(i, portmask))
 146                         for (j = i + 1; j < RTE_MAX_ETHPORTS; j++)
 147                                 if (is_bit_set(j, portmask)) {
 148                                         port_pairs[i] = j;
 149                                         port_pairs[j] = i;
 150                                         i = j;
 151                                         break;
 152                                 }
 153 }
 154
 155 void
 156 setup_shared_variables(void)
 157 {
 158         const struct rte_memzone *qw_memzone;
 159
 160         qw_memzone = rte_memzone_reserve(QUOTA_WATERMARK_MEMZONE_NAME,
 161                         3 * sizeof(int), rte_socket_id(), 0);
 162         if (qw_memzone == NULL)
 163                 rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
 164
 165         quota = qw_memzone->addr;
 166         low_watermark = (unsigned int *) qw_memzone->addr + 1;
 167         high_watermark = (unsigned int *) qw_memzone->addr + 2;
 168 }