diff options
Diffstat (limited to 'drivers/net/mlx4/mlx4_utils.h')
| -rw-r--r-- | drivers/net/mlx4/mlx4_utils.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/net/mlx4/mlx4_utils.h b/drivers/net/mlx4/mlx4_utils.h new file mode 100644 index 00000000..dc529c9c --- /dev/null +++ b/drivers/net/mlx4/mlx4_utils.h @@ -0,0 +1,133 @@ +/*- + * BSD LICENSE + * + * Copyright 2017 6WIND S.A. + * Copyright 2017 Mellanox + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of 6WIND S.A. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef MLX4_UTILS_H_ +#define MLX4_UTILS_H_ + +#include <assert.h> +#include <stddef.h> +#include <stdio.h> + +#include <rte_common.h> +#include <rte_log.h> + +#include "mlx4.h" + +#ifndef NDEBUG + +/* + * When debugging is enabled (NDEBUG not defined), file, line and function + * information replace the driver name (MLX4_DRIVER_NAME) in log messages. + */ + +/** Return the file name part of a path. */ +static inline const char * +pmd_drv_log_basename(const char *s) +{ + const char *n = s; + + while (*n) + if (*(n++) == '/') + s = n; + return s; +} + +#define PMD_DRV_LOG(level, ...) \ + RTE_LOG(level, PMD, \ + RTE_FMT("%s:%u: %s(): " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \ + pmd_drv_log_basename(__FILE__), \ + __LINE__, \ + __func__, \ + RTE_FMT_TAIL(__VA_ARGS__,))) +#define DEBUG(...) PMD_DRV_LOG(DEBUG, __VA_ARGS__) +#ifndef MLX4_PMD_DEBUG_BROKEN_VERBS +#define claim_zero(...) assert((__VA_ARGS__) == 0) +#else /* MLX4_PMD_DEBUG_BROKEN_VERBS */ +#define claim_zero(...) \ + (void)(((__VA_ARGS__) == 0) || \ + DEBUG("Assertion `(" # __VA_ARGS__ ") == 0' failed (IGNORED).")) +#endif /* MLX4_PMD_DEBUG_BROKEN_VERBS */ + +#else /* NDEBUG */ + +/* + * Like assert(), DEBUG() becomes a no-op and claim_zero() does not perform + * any check when debugging is disabled. + */ + +#define PMD_DRV_LOG(level, ...) \ + RTE_LOG(level, PMD, \ + RTE_FMT(MLX4_DRIVER_NAME ": " \ + RTE_FMT_HEAD(__VA_ARGS__,) "\n", \ + RTE_FMT_TAIL(__VA_ARGS__,))) +#define DEBUG(...) (void)0 +#define claim_zero(...) (__VA_ARGS__) + +#endif /* NDEBUG */ + +#define INFO(...) PMD_DRV_LOG(INFO, __VA_ARGS__) +#define WARN(...) PMD_DRV_LOG(WARNING, __VA_ARGS__) +#define ERROR(...) PMD_DRV_LOG(ERR, __VA_ARGS__) + +/** Allocate a buffer on the stack and fill it with a printf format string. */ +#define MKSTR(name, ...) \ + char name[snprintf(NULL, 0, __VA_ARGS__) + 1]; \ + \ + snprintf(name, sizeof(name), __VA_ARGS__) + +/** Generate a string out of the provided arguments. */ +#define MLX4_STR(...) # __VA_ARGS__ + +/** Similar to MLX4_STR() with enclosed macros expanded first. */ +#define MLX4_STR_EXPAND(...) MLX4_STR(__VA_ARGS__) + +/** Object description used with mlx4_mallocv() and similar functions. */ +struct mlx4_malloc_vec { + size_t align; /**< Alignment constraint (power of 2), 0 if unknown. */ + size_t size; /**< Object size. */ + void **addr; /**< Storage for allocation address. */ +}; + +/* mlx4_utils.c */ + +int mlx4_fd_set_non_blocking(int fd); +size_t mlx4_mallocv(const char *type, const struct mlx4_malloc_vec *vec, + unsigned int cnt); +size_t mlx4_zmallocv(const char *type, const struct mlx4_malloc_vec *vec, + unsigned int cnt); +size_t mlx4_mallocv_socket(const char *type, const struct mlx4_malloc_vec *vec, + unsigned int cnt, int socket); +size_t mlx4_zmallocv_socket(const char *type, const struct mlx4_malloc_vec *vec, + unsigned int cnt, int socket); + +#endif /* MLX4_UTILS_H_ */ |