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

[dpdk.git] / drivers / net / mlx5 / mlx5.c

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index b911d0a..69664ef 100644 (file)
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -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.
  */
 
 #include <stddef.h>
 #include <unistd.h>
 #include <string.h>
 #include <assert.h>
+#include <dlfcn.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <errno.h>
@@ -57,6 +30,7 @@
 #include <rte_pci.h>
 #include <rte_bus_pci.h>
 #include <rte_common.h>
+#include <rte_config.h>
 #include <rte_eal_memconfig.h>
 #include <rte_kvargs.h>
 
@@ -1075,6 +1049,47 @@ static struct rte_pci_driver mlx5_driver = {
        .drv_flags = RTE_PCI_DRV_INTR_LSC | RTE_PCI_DRV_INTR_RMV,
 };
 
+#ifdef RTE_LIBRTE_MLX5_DLOPEN_DEPS
+
+/**
+ * Initialization routine for run-time dependency on rdma-core.
+ */
+static int
+mlx5_glue_init(void)
+{
+       void *handle = NULL;
+       void **sym;
+       const char *dlmsg;
+
+       handle = dlopen(MLX5_GLUE, RTLD_LAZY);
+       if (!handle) {
+               rte_errno = EINVAL;
+               dlmsg = dlerror();
+               if (dlmsg)
+                       WARN("cannot load glue library: %s", dlmsg);
+               goto glue_error;
+       }
+       sym = dlsym(handle, "mlx5_glue");
+       if (!sym || !*sym) {
+               rte_errno = EINVAL;
+               dlmsg = dlerror();
+               if (dlmsg)
+                       ERROR("cannot resolve glue symbol: %s", dlmsg);
+               goto glue_error;
+       }
+       mlx5_glue = *sym;
+       return 0;
+glue_error:
+       if (handle)
+               dlclose(handle);
+       WARN("cannot initialize PMD due to missing run-time"
+            " dependency on rdma-core libraries (libibverbs,"
+            " libmlx5)");
+       return -rte_errno;
+}
+
+#endif
+
 /**
  * Driver initialization routine.
  */
@@ -1094,6 +1109,11 @@ rte_mlx5_pmd_init(void)
        /* Match the size of Rx completion entry to the size of a cacheline. */
        if (RTE_CACHE_LINE_SIZE == 128)
                setenv("MLX5_CQE_SIZE", "128", 0);
+#ifdef RTE_LIBRTE_MLX5_DLOPEN_DEPS
+       if (mlx5_glue_init())
+               return;
+       assert(mlx5_glue);
+#endif
        mlx5_glue->fork_init();
        rte_pci_register(&mlx5_driver);
 }