ceph/src/spdk/dpdk/drivers/net/mlx4/mlx4_utils.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2017 6WIND S.A.
   3  * Copyright 2017 Mellanox Technologies, Ltd
   4  */
   5
   6 #ifndef MLX4_UTILS_H_
   7 #define MLX4_UTILS_H_
   8
   9 #include <stddef.h>
  10 #include <stdio.h>
  11
  12 #include <rte_common.h>
  13 #include <rte_log.h>
  14
  15 #include "mlx4.h"
  16
  17 /*
  18  * Compilation workaround for PPC64 when AltiVec is fully enabled, e.g. std=c11.
  19  * Otherwise there would be a type conflict between stdbool and altivec.
  20  */
  21 #if defined(__PPC64__) && !defined(__APPLE_ALTIVEC__)
  22 #undef bool
  23 /* redefine as in stdbool.h */
  24 #define bool _Bool
  25 #endif
  26
  27 extern int mlx4_logtype;
  28
  29 #ifdef RTE_LIBRTE_MLX4_DEBUG
  30
  31 /*
  32  * When debugging is enabled (MLX4_DEBUG is defined), file, line and function
  33  * information replace the driver name (MLX4_DRIVER_NAME) in log messages.
  34  */
  35
  36 /** Return the file name part of a path. */
  37 static inline const char *
  38 pmd_drv_log_basename(const char *s)
  39 {
  40         const char *n = s;
  41
  42         while (*n)
  43                 if (*(n++) == '/')
  44                         s = n;
  45         return s;
  46 }
  47
  48 #define PMD_DRV_LOG(level, ...) \
  49         rte_log(RTE_LOG_ ## level, mlx4_logtype, \
  50                 RTE_FMT("%s:%u: %s(): " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \
  51                         pmd_drv_log_basename(__FILE__), \
  52                         __LINE__, \
  53                         __func__, \
  54                         RTE_FMT_TAIL(__VA_ARGS__,)))
  55 #define DEBUG(...) PMD_DRV_LOG(DEBUG, __VA_ARGS__)
  56 #define MLX4_ASSERT(exp) RTE_VERIFY(exp)
  57 #define claim_zero(...) MLX4_ASSERT((__VA_ARGS__) == 0)
  58
  59 #else /* RTE_LIBRTE_MLX4_DEBUG */
  60
  61 /*
  62  * Like MLX4_ASSERT(), DEBUG() becomes a no-op and claim_zero() does not perform
  63  * any check when debugging is disabled.
  64  */
  65
  66 #define PMD_DRV_LOG(level, ...) \
  67         rte_log(RTE_LOG_ ## level, mlx4_logtype, \
  68                 RTE_FMT(MLX4_DRIVER_NAME ": " \
  69                         RTE_FMT_HEAD(__VA_ARGS__,) "\n", \
  70                 RTE_FMT_TAIL(__VA_ARGS__,)))
  71 #define DEBUG(...) (void)0
  72 #define MLX4_ASSERT(exp) RTE_ASSERT(exp)
  73 #define claim_zero(...) (__VA_ARGS__)
  74
  75 #endif /* RTE_LIBRTE_MLX4_DEBUG */
  76
  77 #define INFO(...) PMD_DRV_LOG(INFO, __VA_ARGS__)
  78 #define WARN(...) PMD_DRV_LOG(WARNING, __VA_ARGS__)
  79 #define ERROR(...) PMD_DRV_LOG(ERR, __VA_ARGS__)
  80
  81 /** Allocate a buffer on the stack and fill it with a printf format string. */
  82 #define MKSTR(name, ...) \
  83         int mkstr_size_##name = snprintf(NULL, 0, "" __VA_ARGS__); \
  84         char name[mkstr_size_##name + 1]; \
  85         \
  86         snprintf(name, sizeof(name), "" __VA_ARGS__)
  87
  88 /** Generate a string out of the provided arguments. */
  89 #define MLX4_STR(...) # __VA_ARGS__
  90
  91 /** Similar to MLX4_STR() with enclosed macros expanded first. */
  92 #define MLX4_STR_EXPAND(...) MLX4_STR(__VA_ARGS__)
  93
  94 /** Object description used with mlx4_mallocv() and similar functions. */
  95 struct mlx4_malloc_vec {
  96         size_t align; /**< Alignment constraint (power of 2), 0 if unknown. */
  97         size_t size; /**< Object size. */
  98         void **addr; /**< Storage for allocation address. */
  99 };
 100
 101 /* mlx4_utils.c */
 102
 103 int mlx4_fd_set_non_blocking(int fd);
 104 size_t mlx4_mallocv(const char *type, const struct mlx4_malloc_vec *vec,
 105                     unsigned int cnt);
 106 size_t mlx4_zmallocv(const char *type, const struct mlx4_malloc_vec *vec,
 107                      unsigned int cnt);
 108 size_t mlx4_mallocv_socket(const char *type, const struct mlx4_malloc_vec *vec,
 109                            unsigned int cnt, int socket);
 110 size_t mlx4_zmallocv_socket(const char *type, const struct mlx4_malloc_vec *vec,
 111                             unsigned int cnt, int socket);
 112
 113 #endif /* MLX4_UTILS_H_ */