lib/librte_node/ethdev_ctrl.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_ether.h>
   8 #include <rte_graph.h>
   9
  10 #include "rte_node_eth_api.h"
  11
  12 #include "ethdev_rx_priv.h"
  13 #include "ethdev_tx_priv.h"
  14 #include "ip4_rewrite_priv.h"
  15 #include "node_private.h"
  16
  17 static struct ethdev_ctrl {
  18         uint16_t nb_graphs;
  19 } ctrl;
  20
  21 int
  22 rte_node_eth_config(struct rte_node_ethdev_config *conf, uint16_t nb_confs,
  23                     uint16_t nb_graphs)
  24 {
  25         struct rte_node_register *ip4_rewrite_node;
  26         struct ethdev_tx_node_main *tx_node_data;
  27         uint16_t tx_q_used, rx_q_used, port_id;
  28         struct rte_node_register *tx_node;
  29         char name[RTE_NODE_NAMESIZE];
  30         const char *next_nodes = name;
  31         struct rte_mempool *mp;
  32         int i, j, rc;
  33         uint32_t id;
  34
  35         ip4_rewrite_node = ip4_rewrite_node_get();
  36         tx_node_data = ethdev_tx_node_data_get();
  37         tx_node = ethdev_tx_node_get();
  38         for (i = 0; i < nb_confs; i++) {
  39                 port_id = conf[i].port_id;
  40
  41                 if (!rte_eth_dev_is_valid_port(port_id))
  42                         return -EINVAL;
  43
  44                 /* Check for mbuf minimum private size requirement */
  45                 for (j = 0; j < conf[i].mp_count; j++) {
  46                         mp = conf[i].mp[j];
  47                         if (!mp)
  48                                 continue;
  49                         /* Check for minimum private space */
  50                         if (rte_pktmbuf_priv_size(mp) < NODE_MBUF_PRIV2_SIZE) {
  51                                 node_err("ethdev",
  52                                          "Minimum mbuf priv size requirement not met by mp %s",
  53                                          mp->name);
  54                                 return -EINVAL;
  55                         }
  56                 }
  57
  58                 rx_q_used = conf[i].num_rx_queues;
  59                 tx_q_used = conf[i].num_tx_queues;
  60                 /* Check if we have a txq for each worker */
  61                 if (tx_q_used < nb_graphs)
  62                         return -EINVAL;
  63
  64                 /* Create node for each rx port queue pair */
  65                 for (j = 0; j < rx_q_used; j++) {
  66                         struct ethdev_rx_node_main *rx_node_data;
  67                         struct rte_node_register *rx_node;
  68                         ethdev_rx_node_elem_t *elem;
  69
  70                         rx_node_data = ethdev_rx_get_node_data_get();
  71                         rx_node = ethdev_rx_node_get();
  72                         snprintf(name, sizeof(name), "%u-%u", port_id, j);
  73                         /* Clone a new rx node with same edges as parent */
  74                         id = rte_node_clone(rx_node->id, name);
  75                         if (id == RTE_NODE_ID_INVALID)
  76                                 return -EIO;
  77
  78                         /* Add it to list of ethdev rx nodes for lookup */
  79                         elem = malloc(sizeof(ethdev_rx_node_elem_t));
  80                         memset(elem, 0, sizeof(ethdev_rx_node_elem_t));
  81                         elem->ctx.port_id = port_id;
  82                         elem->ctx.queue_id = j;
  83                         elem->nid = id;
  84                         elem->next = rx_node_data->head;
  85                         rx_node_data->head = elem;
  86
  87                         node_dbg("ethdev", "Rx node %s-%s: is at %u",
  88                                  rx_node->name, name, id);
  89                 }
  90
  91                 /* Create a per port tx node from base node */
  92                 snprintf(name, sizeof(name), "%u", port_id);
  93                 /* Clone a new node with same edges as parent */
  94                 id = rte_node_clone(tx_node->id, name);
  95                 tx_node_data->nodes[port_id] = id;
  96
  97                 node_dbg("ethdev", "Tx node %s-%s: is at %u", tx_node->name,
  98                          name, id);
  99
 100                 /* Prepare the actual name of the cloned node */
 101                 snprintf(name, sizeof(name), "ethdev_tx-%u", port_id);
 102
 103                 /* Add this tx port node as next to ip4_rewrite_node */
 104                 rte_node_edge_update(ip4_rewrite_node->id, RTE_EDGE_ID_INVALID,
 105                                      &next_nodes, 1);
 106                 /* Assuming edge id is the last one alloc'ed */
 107                 rc = ip4_rewrite_set_next(
 108                         port_id, rte_node_edge_count(ip4_rewrite_node->id) - 1);
 109                 if (rc < 0)
 110                         return rc;
 111         }
 112
 113         ctrl.nb_graphs = nb_graphs;
 114         return 0;
 115 }