drivers/net/sfc/sfc_dp.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright (c) 2017-2018 Solarflare Communications Inc.
   4  * All rights reserved.
   5  *
   6  * This software was jointly developed between OKTET Labs (under contract
   7  * for Solarflare) and Solarflare Communications, Inc.
   8  */
   9
  10 #include <sys/queue.h>
  11 #include <string.h>
  12 #include <errno.h>
  13
  14 #include <rte_log.h>
  15
  16 #include "sfc_dp.h"
  17
  18 void
  19 sfc_dp_queue_init(struct sfc_dp_queue *dpq, uint16_t port_id, uint16_t queue_id,
  20                   const struct rte_pci_addr *pci_addr)
  21 {
  22         dpq->port_id = port_id;
  23         dpq->queue_id = queue_id;
  24         dpq->pci_addr = *pci_addr;
  25 }
  26
  27 struct sfc_dp *
  28 sfc_dp_find_by_name(struct sfc_dp_list *head, enum sfc_dp_type type,
  29                     const char *name)
  30 {
  31         struct sfc_dp *entry;
  32
  33         TAILQ_FOREACH(entry, head, links) {
  34                 if (entry->type != type)
  35                         continue;
  36
  37                 if (strcmp(entry->name, name) == 0)
  38                         return entry;
  39         }
  40
  41         return NULL;
  42 }
  43
  44 struct sfc_dp *
  45 sfc_dp_find_by_caps(struct sfc_dp_list *head, enum sfc_dp_type type,
  46                     unsigned int avail_caps)
  47 {
  48         struct sfc_dp *entry;
  49
  50         TAILQ_FOREACH(entry, head, links) {
  51                 if (entry->type != type)
  52                         continue;
  53
  54                 /* Take the first matching */
  55                 if (sfc_dp_match_hw_fw_caps(entry, avail_caps))
  56                         return entry;
  57         }
  58
  59         return NULL;
  60 }
  61
  62 int
  63 sfc_dp_register(struct sfc_dp_list *head, struct sfc_dp *entry)
  64 {
  65         if (sfc_dp_find_by_name(head, entry->type, entry->name) != NULL) {
  66                 rte_log(RTE_LOG_ERR, RTE_LOGTYPE_PMD,
  67                         "sfc %s dapapath '%s' already registered\n",
  68                         entry->type == SFC_DP_RX ? "Rx" :
  69                         entry->type == SFC_DP_TX ? "Tx" :
  70                         "unknown",
  71                         entry->name);
  72                 return EEXIST;
  73         }
  74
  75         TAILQ_INSERT_TAIL(head, entry, links);
  76
  77         return 0;
  78 }