lib/librte_node/ethdev_tx.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2020 Marvell International Ltd.
   3  */
   4
   5 #include <rte_debug.h>
   6 #include <rte_ethdev.h>
   7 #include <rte_graph.h>
   8 #include <rte_graph_worker.h>
   9 #include <rte_mbuf.h>
  10
  11 #include "ethdev_tx_priv.h"
  12
  13 static struct ethdev_tx_node_main ethdev_tx_main;
  14
  15 static uint16_t
  16 ethdev_tx_node_process(struct rte_graph *graph, struct rte_node *node,
  17                        void **objs, uint16_t nb_objs)
  18 {
  19         ethdev_tx_node_ctx_t *ctx = (ethdev_tx_node_ctx_t *)node->ctx;
  20         uint16_t port, queue;
  21         uint16_t count;
  22
  23         /* Get Tx port id */
  24         port = ctx->port;
  25         queue = ctx->queue;
  26
  27         count = rte_eth_tx_burst(port, queue, (struct rte_mbuf **)objs,
  28                                  nb_objs);
  29
  30         /* Redirect unsent pkts to drop node */
  31         if (count != nb_objs) {
  32                 rte_node_enqueue(graph, node, ETHDEV_TX_NEXT_PKT_DROP,
  33                                  &objs[count], nb_objs - count);
  34         }
  35
  36         return count;
  37 }
  38
  39 static int
  40 ethdev_tx_node_init(const struct rte_graph *graph, struct rte_node *node)
  41 {
  42         ethdev_tx_node_ctx_t *ctx = (ethdev_tx_node_ctx_t *)node->ctx;
  43         uint64_t port_id = RTE_MAX_ETHPORTS;
  44         int i;
  45
  46         /* Find our port id */
  47         for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
  48                 if (ethdev_tx_main.nodes[i] == node->id) {
  49                         port_id = i;
  50                         break;
  51                 }
  52         }
  53         RTE_VERIFY(port_id < RTE_MAX_ETHPORTS);
  54
  55         /* Update port and queue */
  56         ctx->port = port_id;
  57         ctx->queue = graph->id;
  58
  59         return 0;
  60 }
  61
  62 struct ethdev_tx_node_main *
  63 ethdev_tx_node_data_get(void)
  64 {
  65         return &ethdev_tx_main;
  66 }
  67
  68 static struct rte_node_register ethdev_tx_node_base = {
  69         .process = ethdev_tx_node_process,
  70         .name = "ethdev_tx",
  71
  72         .init = ethdev_tx_node_init,
  73
  74         .nb_edges = ETHDEV_TX_NEXT_MAX,
  75         .next_nodes = {
  76                 [ETHDEV_TX_NEXT_PKT_DROP] = "pkt_drop",
  77         },
  78 };
  79
  80 struct rte_node_register *
  81 ethdev_tx_node_get(void)
  82 {
  83         return &ethdev_tx_node_base;
  84 }
  85
  86 RTE_NODE_REGISTER(ethdev_tx_node_base);