Imported upstream release 16.04

* gbp import-orig ../dpdk-16.04.tar.xz

Change-Id: Iac2196db782ba322f6974d8a752acc34ce5024c3
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 184 insertions, 0 deletions

diff --git a/drivers/net/mlx5/mlx5_utils.h b/drivers/net/mlx5/mlx5_utils.h
new file mode 100644
index 00000000..a824787f
--- /dev/null
+++ b/drivers/net/mlx5/mlx5_utils.h
@@ -0,0 +1,184 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright 2015 6WIND S.A.
+ *   Copyright 2015 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 RTE_PMD_MLX5_UTILS_H_
+#define RTE_PMD_MLX5_UTILS_H_
+
+#include <stddef.h>
+#include <stdio.h>
+#include <limits.h>
+#include <assert.h>
+#include <errno.h>
+
+#include "mlx5_defs.h"
+
+/* Bit-field manipulation. */
+#define BITFIELD_DECLARE(bf, type, size) \
+	type bf[(((size_t)(size) / (sizeof(type) * CHAR_BIT)) + \
+		 !!((size_t)(size) % (sizeof(type) * CHAR_BIT)))]
+#define BITFIELD_DEFINE(bf, type, size) \
+	BITFIELD_DECLARE((bf), type, (size)) = { 0 }
+#define BITFIELD_SET(bf, b) \
+	(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)), \
+	 (void)((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] |= \
+		((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT)))))
+#define BITFIELD_RESET(bf, b) \
+	(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)), \
+	 (void)((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] &= \
+		~((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT)))))
+#define BITFIELD_ISSET(bf, b) \
+	(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)), \
+	 !!(((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] & \
+	     ((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT))))))
+
+/* Save and restore errno around argument evaluation. */
+#define ERRNO_SAFE(x) ((errno = (int []){ errno, ((x), 0) }[0]))
+
+/*
+ * Helper macros to work around __VA_ARGS__ limitations in a C99 compliant
+ * manner.
+ */
+#define PMD_DRV_LOG_STRIP(a, b) a
+#define PMD_DRV_LOG_OPAREN (
+#define PMD_DRV_LOG_CPAREN )
+#define PMD_DRV_LOG_COMMA ,
+
+/* 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;
+}
+
+/*
+ * When debugging is enabled (NDEBUG not defined), file, line and function
+ * information replace the driver name (MLX5_DRIVER_NAME) in log messages.
+ */
+#ifndef NDEBUG
+
+#define PMD_DRV_LOG___(level, ...) \
+	ERRNO_SAFE(RTE_LOG(level, PMD, __VA_ARGS__))
+#define PMD_DRV_LOG__(level, ...) \
+	PMD_DRV_LOG___(level, "%s:%u: %s(): " __VA_ARGS__)
+#define PMD_DRV_LOG_(level, s, ...) \
+	PMD_DRV_LOG__(level, \
+		s "\n" PMD_DRV_LOG_COMMA \
+		pmd_drv_log_basename(__FILE__) PMD_DRV_LOG_COMMA \
+		__LINE__ PMD_DRV_LOG_COMMA \
+		__func__, \
+		__VA_ARGS__)
+
+#else /* NDEBUG */
+
+#define PMD_DRV_LOG___(level, ...) \
+	ERRNO_SAFE(RTE_LOG(level, PMD, MLX5_DRIVER_NAME ": " __VA_ARGS__))
+#define PMD_DRV_LOG__(level, ...) \
+	PMD_DRV_LOG___(level, __VA_ARGS__)
+#define PMD_DRV_LOG_(level, s, ...) \
+	PMD_DRV_LOG__(level, s "\n", __VA_ARGS__)
+
+#endif /* NDEBUG */
+
+/* Generic printf()-like logging macro with automatic line feed. */
+#define PMD_DRV_LOG(level, ...) \
+	PMD_DRV_LOG_(level, \
+		__VA_ARGS__ PMD_DRV_LOG_STRIP PMD_DRV_LOG_OPAREN, \
+		PMD_DRV_LOG_CPAREN)
+
+/*
+ * Like assert(), DEBUG() becomes a no-op and claim_zero() does not perform
+ * any check when debugging is disabled.
+ */
+#ifndef NDEBUG
+
+#define DEBUG(...) PMD_DRV_LOG(DEBUG, __VA_ARGS__)
+#define claim_zero(...) assert((__VA_ARGS__) == 0)
+
+#else /* NDEBUG */
+
+#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__)
+
+/* Convenience macros for accessing mbuf fields. */
+#define NEXT(m) ((m)->next)
+#define DATA_LEN(m) ((m)->data_len)
+#define PKT_LEN(m) ((m)->pkt_len)
+#define DATA_OFF(m) ((m)->data_off)
+#define SET_DATA_OFF(m, o) ((m)->data_off = (o))
+#define NB_SEGS(m) ((m)->nb_segs)
+#define PORT(m) ((m)->port)
+
+/* Transpose flags. Useful to convert IBV to DPDK flags. */
+#define TRANSPOSE(val, from, to) \
+	(((from) >= (to)) ? \
+	 (((val) & (from)) / ((from) / (to))) : \
+	 (((val) & (from)) * ((to) / (from))))
+
+/* 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__)
+
+/**
+ * Return nearest power of two above input value.
+ *
+ * @param v
+ *   Input value.
+ *
+ * @return
+ *   Nearest power of two above input value.
+ */
+static inline unsigned int
+log2above(unsigned int v)
+{
+	unsigned int l;
+	unsigned int r;
+
+	for (l = 0, r = 0; (v >> 1); ++l, v >>= 1)
+		r |= (v & 1);
+	return l + r;
+}
+
+#endif /* RTE_PMD_MLX5_UTILS_H_ */