-/*-
- * BSD LICENSE
- *
- * Copyright 2012 6WIND S.A.
- * Copyright 2012 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 2012 6WIND S.A.
+ * Copyright 2012 Mellanox Technologies, Ltd
*/
/**
*/
#include <assert.h>
+#include <dlfcn.h>
#include <errno.h>
#include <inttypes.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
/* Verbs headers do not support -pedantic. */
#ifdef PEDANTIC
#endif
#include <rte_common.h>
+#include <rte_config.h>
#include <rte_dev.h>
#include <rte_errno.h>
#include <rte_ethdev_driver.h>
#include <rte_mbuf.h>
#include "mlx4.h"
+#include "mlx4_glue.h"
#include "mlx4_flow.h"
#include "mlx4_rxtx.h"
#include "mlx4_utils.h"
mlx4_tx_queue_release(dev->data->tx_queues[i]);
if (priv->pd != NULL) {
assert(priv->ctx != NULL);
- claim_zero(ibv_dealloc_pd(priv->pd));
- claim_zero(ibv_close_device(priv->ctx));
+ claim_zero(mlx4_glue->dealloc_pd(priv->pd));
+ claim_zero(mlx4_glue->close_device(priv->ctx));
} else
assert(priv->ctx == NULL);
mlx4_intr_uninstall(priv);
(void)pci_drv;
assert(pci_drv == &mlx4_driver);
- list = ibv_get_device_list(&i);
+ list = mlx4_glue->get_device_list(&i);
if (list == NULL) {
rte_errno = errno;
assert(rte_errno);
PCI_DEVICE_ID_MELLANOX_CONNECTX3VF);
INFO("PCI information matches, using device \"%s\" (VF: %s)",
list[i]->name, (vf ? "true" : "false"));
- attr_ctx = ibv_open_device(list[i]);
+ attr_ctx = mlx4_glue->open_device(list[i]);
err = errno;
break;
}
if (attr_ctx == NULL) {
- ibv_free_device_list(list);
+ mlx4_glue->free_device_list(list);
switch (err) {
case 0:
rte_errno = ENODEV;
}
ibv_dev = list[i];
DEBUG("device opened");
- if (ibv_query_device(attr_ctx, &device_attr)) {
+ if (mlx4_glue->query_device(attr_ctx, &device_attr)) {
rte_errno = ENODEV;
goto error;
}
if (!conf.ports.enabled)
conf.ports.enabled = conf.ports.present;
/* Retrieve extended device attributes. */
- if (ibv_query_device_ex(attr_ctx, NULL, &device_attr_ex)) {
+ if (mlx4_glue->query_device_ex(attr_ctx, NULL, &device_attr_ex)) {
rte_errno = ENODEV;
goto error;
}
if (!(conf.ports.enabled & (1 << i)))
continue;
DEBUG("using port %u", port);
- ctx = ibv_open_device(ibv_dev);
+ ctx = mlx4_glue->open_device(ibv_dev);
if (ctx == NULL) {
rte_errno = ENODEV;
goto port_error;
}
/* Check port status. */
- err = ibv_query_port(ctx, port, &port_attr);
+ err = mlx4_glue->query_port(ctx, port, &port_attr);
if (err) {
rte_errno = err;
ERROR("port query failed: %s", strerror(rte_errno));
}
if (port_attr.state != IBV_PORT_ACTIVE)
DEBUG("port %d is not active: \"%s\" (%d)",
- port, ibv_port_state_str(port_attr.state),
+ port, mlx4_glue->port_state_str(port_attr.state),
port_attr.state);
/* Make asynchronous FD non-blocking to handle interrupts. */
if (mlx4_fd_set_non_blocking(ctx->async_fd) < 0) {
goto port_error;
}
/* Allocate protection domain. */
- pd = ibv_alloc_pd(ctx);
+ pd = mlx4_glue->alloc_pd(ctx);
if (pd == NULL) {
rte_errno = ENOMEM;
ERROR("PD allocation failure");
char name[RTE_ETH_NAME_MAX_LEN];
snprintf(name, sizeof(name), "%s port %u",
- ibv_get_device_name(ibv_dev), port);
+ mlx4_glue->get_device_name(ibv_dev), port);
eth_dev = rte_eth_dev_allocate(name);
}
if (eth_dev == NULL) {
port_error:
rte_free(priv);
if (pd)
- claim_zero(ibv_dealloc_pd(pd));
+ claim_zero(mlx4_glue->dealloc_pd(pd));
if (ctx)
- claim_zero(ibv_close_device(ctx));
+ claim_zero(mlx4_glue->close_device(ctx));
if (eth_dev)
rte_eth_dev_release_port(eth_dev);
break;
*/
error:
if (attr_ctx)
- claim_zero(ibv_close_device(attr_ctx));
+ claim_zero(mlx4_glue->close_device(attr_ctx));
if (list)
- ibv_free_device_list(list);
+ mlx4_glue->free_device_list(list);
assert(rte_errno >= 0);
return -rte_errno;
}
RTE_PCI_DRV_INTR_RMV,
};
+#ifdef RTE_LIBRTE_MLX4_DLOPEN_DEPS
+
+/**
+ * Suffix RTE_EAL_PMD_PATH with "-glue".
+ *
+ * This function performs a sanity check on RTE_EAL_PMD_PATH before
+ * suffixing its last component.
+ *
+ * @param buf[out]
+ * Output buffer, should be large enough otherwise NULL is returned.
+ * @param size
+ * Size of @p out.
+ *
+ * @return
+ * Pointer to @p buf or @p NULL in case suffix cannot be appended.
+ */
+static char *
+mlx4_glue_path(char *buf, size_t size)
+{
+ static const char *const bad[] = { "/", ".", "..", NULL };
+ const char *path = RTE_EAL_PMD_PATH;
+ size_t len = strlen(path);
+ size_t off;
+ int i;
+
+ while (len && path[len - 1] == '/')
+ --len;
+ for (off = len; off && path[off - 1] != '/'; --off)
+ ;
+ for (i = 0; bad[i]; ++i)
+ if (!strncmp(path + off, bad[i], (int)(len - off)))
+ goto error;
+ i = snprintf(buf, size, "%.*s-glue", (int)len, path);
+ if (i == -1 || (size_t)i >= size)
+ goto error;
+ return buf;
+error:
+ ERROR("unable to append \"-glue\" to last component of"
+ " RTE_EAL_PMD_PATH (\"" RTE_EAL_PMD_PATH "\"),"
+ " please re-configure DPDK");
+ return NULL;
+}
+
+/**
+ * Initialization routine for run-time dependency on rdma-core.
+ */
+static int
+mlx4_glue_init(void)
+{
+ char glue_path[sizeof(RTE_EAL_PMD_PATH) - 1 + sizeof("-glue")];
+ const char *path[] = {
+ /*
+ * A basic security check is necessary before trusting
+ * MLX4_GLUE_PATH, which may override RTE_EAL_PMD_PATH.
+ */
+ (geteuid() == getuid() && getegid() == getgid() ?
+ getenv("MLX4_GLUE_PATH") : NULL),
+ /*
+ * When RTE_EAL_PMD_PATH is set, use its glue-suffixed
+ * variant, otherwise let dlopen() look up libraries on its
+ * own.
+ */
+ (*RTE_EAL_PMD_PATH ?
+ mlx4_glue_path(glue_path, sizeof(glue_path)) : ""),
+ };
+ unsigned int i = 0;
+ void *handle = NULL;
+ void **sym;
+ const char *dlmsg;
+
+ while (!handle && i != RTE_DIM(path)) {
+ const char *end;
+ size_t len;
+ int ret;
+
+ if (!path[i]) {
+ ++i;
+ continue;
+ }
+ end = strpbrk(path[i], ":;");
+ if (!end)
+ end = path[i] + strlen(path[i]);
+ len = end - path[i];
+ ret = 0;
+ do {
+ char name[ret + 1];
+
+ ret = snprintf(name, sizeof(name), "%.*s%s" MLX4_GLUE,
+ (int)len, path[i],
+ (!len || *(end - 1) == '/') ? "" : "/");
+ if (ret == -1)
+ break;
+ if (sizeof(name) != (size_t)ret + 1)
+ continue;
+ DEBUG("looking for rdma-core glue as \"%s\"", name);
+ handle = dlopen(name, RTLD_LAZY);
+ break;
+ } while (1);
+ path[i] = end + 1;
+ if (!*end)
+ ++i;
+ }
+ if (!handle) {
+ rte_errno = EINVAL;
+ dlmsg = dlerror();
+ if (dlmsg)
+ WARN("cannot load glue library: %s", dlmsg);
+ goto glue_error;
+ }
+ sym = dlsym(handle, "mlx4_glue");
+ if (!sym || !*sym) {
+ rte_errno = EINVAL;
+ dlmsg = dlerror();
+ if (dlmsg)
+ ERROR("cannot resolve glue symbol: %s", dlmsg);
+ goto glue_error;
+ }
+ mlx4_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,"
+ " libmlx4)");
+ return -rte_errno;
+}
+
+#endif
+
/**
* Driver initialization routine.
*/
* using this PMD, which is not supported in forked processes.
*/
setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
- ibv_fork_init();
+#ifdef RTE_LIBRTE_MLX4_DLOPEN_DEPS
+ if (mlx4_glue_init())
+ return;
+ assert(mlx4_glue);
+#endif
+#ifndef NDEBUG
+ /* Glue structure must not contain any NULL pointers. */
+ {
+ unsigned int i;
+
+ for (i = 0; i != sizeof(*mlx4_glue) / sizeof(void *); ++i)
+ assert(((const void *const *)mlx4_glue)[i]);
+ }
+#endif
+ if (strcmp(mlx4_glue->version, MLX4_GLUE_VERSION)) {
+ ERROR("rdma-core glue \"%s\" mismatch: \"%s\" is required",
+ mlx4_glue->version, MLX4_GLUE_VERSION);
+ return;
+ }
+ mlx4_glue->fork_init();
rte_pci_register(&mlx4_driver);
}
git.droids-corp.org / dpdk.git / blobdiff