examples/l2fwd-event/l2fwd_common.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #include "l2fwd_common.h"
   6
   7 int
   8 l2fwd_event_init_ports(struct l2fwd_resources *rsrc)
   9 {
  10         uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  11         uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  12         struct rte_eth_conf port_conf = {
  13                 .rxmode = {
  14                         .max_rx_pkt_len = RTE_ETHER_MAX_LEN,
  15                         .split_hdr_size = 0,
  16                 },
  17                 .txmode = {
  18                         .mq_mode = ETH_MQ_TX_NONE,
  19                 },
  20         };
  21         uint16_t nb_ports_available = 0;
  22         uint16_t port_id;
  23         int ret;
  24
  25         if (rsrc->event_mode) {
  26                 port_conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
  27                 port_conf.rx_adv_conf.rss_conf.rss_key = NULL;
  28                 port_conf.rx_adv_conf.rss_conf.rss_hf = ETH_RSS_IP;
  29         }
  30
  31         /* Initialise each port */
  32         RTE_ETH_FOREACH_DEV(port_id) {
  33                 struct rte_eth_conf local_port_conf = port_conf;
  34                 struct rte_eth_dev_info dev_info;
  35                 struct rte_eth_rxconf rxq_conf;
  36                 struct rte_eth_txconf txq_conf;
  37
  38                 /* skip ports that are not enabled */
  39                 if ((rsrc->enabled_port_mask & (1 << port_id)) == 0) {
  40                         printf("Skipping disabled port %u\n", port_id);
  41                         continue;
  42                 }
  43                 nb_ports_available++;
  44
  45                 /* init port */
  46                 printf("Initializing port %u... ", port_id);
  47                 fflush(stdout);
  48
  49                 ret = rte_eth_dev_info_get(port_id, &dev_info);
  50                 if (ret != 0)
  51                         rte_panic("Error during getting device (port %u) info: %s\n",
  52                                   port_id, strerror(-ret));
  53                 local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
  54                         dev_info.flow_type_rss_offloads;
  55                 if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
  56                                 port_conf.rx_adv_conf.rss_conf.rss_hf) {
  57                         printf("Port %u modified RSS hash function based on hardware support,"
  58                                "requested:%#"PRIx64" configured:%#"PRIx64"",
  59                                 port_id,
  60                                 port_conf.rx_adv_conf.rss_conf.rss_hf,
  61                                 local_port_conf.rx_adv_conf.rss_conf.rss_hf);
  62                 }
  63
  64                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
  65                         local_port_conf.txmode.offloads |=
  66                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
  67                 /* Configure RX and TX queue. 8< */
  68                 ret = rte_eth_dev_configure(port_id, 1, 1, &local_port_conf);
  69                 if (ret < 0)
  70                         rte_panic("Cannot configure device: err=%d, port=%u\n",
  71                                   ret, port_id);
  72                 /* >8 End of configuration RX and TX queue. */
  73
  74                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd,
  75                                                        &nb_txd);
  76                 if (ret < 0)
  77                         rte_panic("Cannot adjust number of descriptors: err=%d, port=%u\n",
  78                                   ret, port_id);
  79
  80                 rte_eth_macaddr_get(port_id, &rsrc->eth_addr[port_id]);
  81
  82                 /* init one RX queue */
  83                 fflush(stdout);
  84                 rxq_conf = dev_info.default_rxconf;
  85                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
  86                 /* Using lcore to poll one or several ports. 8< */
  87                 ret = rte_eth_rx_queue_setup(port_id, 0, nb_rxd,
  88                                              rte_eth_dev_socket_id(port_id),
  89                                              &rxq_conf,
  90                                              rsrc->pktmbuf_pool);
  91                 if (ret < 0)
  92                         rte_panic("rte_eth_rx_queue_setup:err=%d, port=%u\n",
  93                                   ret, port_id);
  94
  95                 /* >8 End of using lcore to poll one or several ports. */
  96
  97                 /* Init one TX queue on each port. 8< */
  98                 fflush(stdout);
  99                 txq_conf = dev_info.default_txconf;
 100                 txq_conf.offloads = local_port_conf.txmode.offloads;
 101                 ret = rte_eth_tx_queue_setup(port_id, 0, nb_txd,
 102                                 rte_eth_dev_socket_id(port_id),
 103                                 &txq_conf);
 104                 if (ret < 0)
 105                         rte_panic("rte_eth_tx_queue_setup:err=%d, port=%u\n",
 106                                   ret, port_id);
 107                 /* >8 End of init one TX queue on each port. */
 108
 109                 rte_eth_promiscuous_enable(port_id);
 110
 111                 printf("Port %u,MAC address: " RTE_ETHER_ADDR_PRT_FMT "\n\n",
 112                         port_id,
 113                         RTE_ETHER_ADDR_BYTES(&rsrc->eth_addr[port_id]));
 114         }
 115
 116         return nb_ports_available;
 117 }