drivers/net/softnic/rte_eth_softnic_link.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2018 Intel Corporation
   3  */
   4
   5 #include <stdlib.h>
   6 #include <string.h>
   7
   8 #include <rte_ethdev.h>
   9 #include <rte_string_fns.h>
  10
  11 #include "rte_eth_softnic_internals.h"
  12
  13 int
  14 softnic_link_init(struct pmd_internals *p)
  15 {
  16         TAILQ_INIT(&p->link_list);
  17
  18         return 0;
  19 }
  20
  21 void
  22 softnic_link_free(struct pmd_internals *p)
  23 {
  24         for ( ; ; ) {
  25                 struct softnic_link *link;
  26
  27                 link = TAILQ_FIRST(&p->link_list);
  28                 if (link == NULL)
  29                         break;
  30
  31                 TAILQ_REMOVE(&p->link_list, link, node);
  32                 free(link);
  33         }
  34 }
  35
  36 struct softnic_link *
  37 softnic_link_find(struct pmd_internals *p,
  38         const char *name)
  39 {
  40         struct softnic_link *link;
  41
  42         if (name == NULL)
  43                 return NULL;
  44
  45         TAILQ_FOREACH(link, &p->link_list, node)
  46                 if (strcmp(link->name, name) == 0)
  47                         return link;
  48
  49         return NULL;
  50 }
  51
  52 struct softnic_link *
  53 softnic_link_create(struct pmd_internals *p,
  54         const char *name,
  55         struct softnic_link_params *params)
  56 {
  57         struct rte_eth_dev_info port_info;
  58         struct softnic_link *link;
  59         uint16_t port_id;
  60         int ret;
  61
  62         /* Check input params */
  63         if (name == NULL ||
  64                 softnic_link_find(p, name) ||
  65                 params == NULL)
  66                 return NULL;
  67
  68         port_id = params->port_id;
  69         if (params->dev_name) {
  70                 int status;
  71
  72                 status = rte_eth_dev_get_port_by_name(params->dev_name,
  73                         &port_id);
  74
  75                 if (status)
  76                         return NULL;
  77         } else {
  78                 if (!rte_eth_dev_is_valid_port(port_id))
  79                         return NULL;
  80         }
  81
  82         ret = rte_eth_dev_info_get(port_id, &port_info);
  83         if (ret != 0)
  84                 return NULL;
  85
  86         /* Node allocation */
  87         link = calloc(1, sizeof(struct softnic_link));
  88         if (link == NULL)
  89                 return NULL;
  90
  91         /* Node fill in */
  92         strlcpy(link->name, name, sizeof(link->name));
  93         link->port_id = port_id;
  94         link->n_rxq = port_info.nb_rx_queues;
  95         link->n_txq = port_info.nb_tx_queues;
  96
  97         /* Node add to list */
  98         TAILQ_INSERT_TAIL(&p->link_list, link, node);
  99
 100         return link;
 101 }