lib/node/ethdev_ctrl.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2020 Marvell International Ltd.
   3  */
   4
   5 #include <rte_ethdev.h>
   6 #include <rte_graph.h>
   7
   8 #include "rte_node_eth_api.h"
   9
  10 #include "ethdev_rx_priv.h"
  11 #include "ethdev_tx_priv.h"
  12 #include "ip4_rewrite_priv.h"
  13 #include "node_private.h"
  14
  15 static struct ethdev_ctrl {
  16         uint16_t nb_graphs;
  17 } ctrl;
  18
  19 int
  20 rte_node_eth_config(struct rte_node_ethdev_config *conf, uint16_t nb_confs,
  21                     uint16_t nb_graphs)
  22 {
  23         struct rte_node_register *ip4_rewrite_node;
  24         struct ethdev_tx_node_main *tx_node_data;
  25         uint16_t tx_q_used, rx_q_used, port_id;
  26         struct rte_node_register *tx_node;
  27         char name[RTE_NODE_NAMESIZE];
  28         const char *next_nodes = name;
  29         struct rte_mempool *mp;
  30         int i, j, rc;
  31         uint32_t id;
  32
  33         ip4_rewrite_node = ip4_rewrite_node_get();
  34         tx_node_data = ethdev_tx_node_data_get();
  35         tx_node = ethdev_tx_node_get();
  36         for (i = 0; i < nb_confs; i++) {
  37                 port_id = conf[i].port_id;
  38
  39                 if (!rte_eth_dev_is_valid_port(port_id))
  40                         return -EINVAL;
  41
  42                 /* Check for mbuf minimum private size requirement */
  43                 for (j = 0; j < conf[i].mp_count; j++) {
  44                         mp = conf[i].mp[j];
  45                         if (!mp)
  46                                 continue;
  47                         /* Check for minimum private space */
  48                         if (rte_pktmbuf_priv_size(mp) < NODE_MBUF_PRIV2_SIZE) {
  49                                 node_err("ethdev",
  50                                          "Minimum mbuf priv size requirement not met by mp %s",
  51                                          mp->name);
  52                                 return -EINVAL;
  53                         }
  54                 }
  55
  56                 rx_q_used = conf[i].num_rx_queues;
  57                 tx_q_used = conf[i].num_tx_queues;
  58                 /* Check if we have a txq for each worker */
  59                 if (tx_q_used < nb_graphs)
  60                         return -EINVAL;
  61
  62                 /* Create node for each rx port queue pair */
  63                 for (j = 0; j < rx_q_used; j++) {
  64                         struct ethdev_rx_node_main *rx_node_data;
  65                         struct rte_node_register *rx_node;
  66                         ethdev_rx_node_elem_t *elem;
  67
  68                         rx_node_data = ethdev_rx_get_node_data_get();
  69                         rx_node = ethdev_rx_node_get();
  70                         snprintf(name, sizeof(name), "%u-%u", port_id, j);
  71                         /* Clone a new rx node with same edges as parent */
  72                         id = rte_node_clone(rx_node->id, name);
  73                         if (id == RTE_NODE_ID_INVALID)
  74                                 return -EIO;
  75
  76                         /* Add it to list of ethdev rx nodes for lookup */
  77                         elem = malloc(sizeof(ethdev_rx_node_elem_t));
  78                         memset(elem, 0, sizeof(ethdev_rx_node_elem_t));
  79                         elem->ctx.port_id = port_id;
  80                         elem->ctx.queue_id = j;
  81                         elem->nid = id;
  82                         elem->next = rx_node_data->head;
  83                         rx_node_data->head = elem;
  84
  85                         node_dbg("ethdev", "Rx node %s-%s: is at %u",
  86                                  rx_node->name, name, id);
  87                 }
  88
  89                 /* Create a per port tx node from base node */
  90                 snprintf(name, sizeof(name), "%u", port_id);
  91                 /* Clone a new node with same edges as parent */
  92                 id = rte_node_clone(tx_node->id, name);
  93                 tx_node_data->nodes[port_id] = id;
  94
  95                 node_dbg("ethdev", "Tx node %s-%s: is at %u", tx_node->name,
  96                          name, id);
  97
  98                 /* Prepare the actual name of the cloned node */
  99                 snprintf(name, sizeof(name), "ethdev_tx-%u", port_id);
 100
 101                 /* Add this tx port node as next to ip4_rewrite_node */
 102                 rte_node_edge_update(ip4_rewrite_node->id, RTE_EDGE_ID_INVALID,
 103                                      &next_nodes, 1);
 104                 /* Assuming edge id is the last one alloc'ed */
 105                 rc = ip4_rewrite_set_next(
 106                         port_id, rte_node_edge_count(ip4_rewrite_node->id) - 1);
 107                 if (rc < 0)
 108                         return rc;
 109         }
 110
 111         ctrl.nb_graphs = nb_graphs;
 112         return 0;
 113 }