ceph/src/spdk/dpdk/lib/librte_mbuf/rte_mbuf_pool_ops.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2018 NXP
   3  */
   4
   5 #include <string.h>
   6 #include <rte_compat.h>
   7 #include <rte_eal.h>
   8 #include <rte_mbuf.h>
   9 #include <rte_errno.h>
  10 #include <rte_mbuf_pool_ops.h>
  11
  12 int
  13 rte_mbuf_set_platform_mempool_ops(const char *ops_name)
  14 {
  15         const struct rte_memzone *mz;
  16
  17         size_t len = strnlen(ops_name, RTE_MEMPOOL_OPS_NAMESIZE);
  18         if (len == 0)
  19                 return -EINVAL;
  20         if (len == RTE_MEMPOOL_OPS_NAMESIZE)
  21                 return -ENAMETOOLONG;
  22
  23         mz = rte_memzone_lookup("mbuf_platform_pool_ops");
  24         if (mz == NULL) {
  25                 mz = rte_memzone_reserve("mbuf_platform_pool_ops",
  26                         RTE_MEMPOOL_OPS_NAMESIZE, SOCKET_ID_ANY, 0);
  27                 if (mz == NULL)
  28                         return -rte_errno;
  29                 strcpy(mz->addr, ops_name);
  30                 return 0;
  31         } else if (strcmp(mz->addr, ops_name) == 0) {
  32                 return 0;
  33         }
  34
  35         RTE_LOG(ERR, MBUF,
  36                 "%s is already registered as platform mbuf pool ops\n",
  37                 (char *)mz->addr);
  38         return -EEXIST;
  39 }
  40
  41 const char *
  42 rte_mbuf_platform_mempool_ops(void)
  43 {
  44         const struct rte_memzone *mz;
  45
  46         mz = rte_memzone_lookup("mbuf_platform_pool_ops");
  47         if (mz == NULL)
  48                 return NULL;
  49         return mz->addr;
  50 }
  51
  52 int
  53 rte_mbuf_set_user_mempool_ops(const char *ops_name)
  54 {
  55         const struct rte_memzone *mz;
  56
  57         size_t len = strnlen(ops_name, RTE_MEMPOOL_OPS_NAMESIZE);
  58         if (len == 0)
  59                 return -EINVAL;
  60         if (len == RTE_MEMPOOL_OPS_NAMESIZE)
  61                 return -ENAMETOOLONG;
  62
  63         mz = rte_memzone_lookup("mbuf_user_pool_ops");
  64         if (mz == NULL) {
  65                 mz = rte_memzone_reserve("mbuf_user_pool_ops",
  66                         RTE_MEMPOOL_OPS_NAMESIZE, SOCKET_ID_ANY, 0);
  67                 if (mz == NULL)
  68                         return -rte_errno;
  69         }
  70
  71         strcpy(mz->addr, ops_name);
  72         return 0;
  73
  74 }
  75
  76 const char *
  77 rte_mbuf_user_mempool_ops(void)
  78 {
  79         const struct rte_memzone *mz;
  80
  81         mz = rte_memzone_lookup("mbuf_user_pool_ops");
  82         if (mz == NULL)
  83                 return rte_eal_mbuf_user_pool_ops();
  84         return mz->addr;
  85 }
  86
  87 /* Return mbuf pool ops name */
  88 const char *
  89 rte_mbuf_best_mempool_ops(void)
  90 {
  91         /* User defined mempool ops takes the priority */
  92         const char *best_ops = rte_mbuf_user_mempool_ops();
  93         if (best_ops)
  94                 return best_ops;
  95
  96         /* Next choice is platform configured mempool ops */
  97         best_ops = rte_mbuf_platform_mempool_ops();
  98         if (best_ops)
  99                 return best_ops;
 100
 101         /* Last choice is to use the compile time config pool */
 102         return RTE_MBUF_DEFAULT_MEMPOOL_OPS;
 103 }