net/mlx5: use SPDX tags in 6WIND copyrighted files

[dpdk.git] / drivers / net / mlx5 / mlx5_utils.h

diff --git a/drivers/net/mlx5/mlx5_utils.h b/drivers/net/mlx5/mlx5_utils.h
index 8ff075b..e1bfb9c 100644 (file)
--- a/drivers/net/mlx5/mlx5_utils.h
+++ b/drivers/net/mlx5/mlx5_utils.h
@@ -1,40 +1,13 @@
-/*-
- *   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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2015 6WIND S.A.
+ * Copyright 2015 Mellanox.
  */
 
 #ifndef RTE_PMD_MLX5_UTILS_H_
 #define RTE_PMD_MLX5_UTILS_H_
 
 #include <stddef.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <limits.h>
 #include <assert.h>
@@ -61,6 +34,9 @@
         !!(((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] & \
             ((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT))))))
 
+/* Convert a bit number to the corresponding 64-bit mask */
+#define MLX5_BITSHIFT(v) (UINT64_C(1) << (v))
+
 /* Save and restore errno around argument evaluation. */
 #define ERRNO_SAFE(x) ((errno = (int []){ errno, ((x), 0) }[0]))
 
@@ -128,11 +104,13 @@ pmd_drv_log_basename(const char *s)
 
 #define DEBUG(...) PMD_DRV_LOG(DEBUG, __VA_ARGS__)
 #define claim_zero(...) assert((__VA_ARGS__) == 0)
+#define claim_nonzero(...) assert((__VA_ARGS__) != 0)
 
 #else /* NDEBUG */
 
 #define DEBUG(...) (void)0
 #define claim_zero(...) (__VA_ARGS__)
+#define claim_nonzero(...) (__VA_ARGS__)
 
 #endif /* NDEBUG */
 
@@ -161,6 +139,24 @@ pmd_drv_log_basename(const char *s)
        \
        snprintf(name, sizeof(name), __VA_ARGS__)
 
-#define WR_ID(o) (((wr_id_t *)&(o))->data)
+/**
+ * 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_ */