-/*-
- * 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2017 6WIND S.A.
+ * Copyright 2017 Mellanox.
*/
#include <rte_malloc.h>
#include "failsafe_private.h"
+static int
+fs_ethdev_portid_get(const char *name, uint16_t *port_id)
+{
+ uint16_t pid;
+ size_t len;
+
+ if (name == NULL) {
+ DEBUG("Null pointer is specified\n");
+ return -EINVAL;
+ }
+ len = strlen(name);
+ RTE_ETH_FOREACH_DEV(pid) {
+ if (!strncmp(name, rte_eth_devices[pid].device->name, len)) {
+ *port_id = pid;
+ return 0;
+ }
+ }
+ return -ENODEV;
+}
+
static int
fs_bus_init(struct rte_eth_dev *dev)
{
struct sub_device *sdev;
struct rte_devargs *da;
uint8_t i;
- uint16_t j;
+ uint16_t pid;
int ret;
FOREACH_SUBDEV(sdev, i, dev) {
if (sdev->state != DEV_PARSED)
continue;
da = &sdev->devargs;
- ret = rte_eal_hotplug_add(da->bus->name,
- da->name,
- da->args);
- if (ret) {
- ERROR("sub_device %d probe failed %s%s%s", i,
- rte_errno ? "(" : "",
- rte_errno ? strerror(rte_errno) : "",
- rte_errno ? ")" : "");
- continue;
- }
- RTE_ETH_FOREACH_DEV(j) {
- if (strcmp(rte_eth_devices[j].device->name,
- da->name) == 0) {
- ETH(sdev) = &rte_eth_devices[j];
- break;
+ if (fs_ethdev_portid_get(da->name, &pid) != 0) {
+ ret = rte_eal_hotplug_add(da->bus->name,
+ da->name,
+ da->args);
+ if (ret) {
+ ERROR("sub_device %d probe failed %s%s%s", i,
+ rte_errno ? "(" : "",
+ rte_errno ? strerror(rte_errno) : "",
+ rte_errno ? ")" : "");
+ continue;
}
+ if (fs_ethdev_portid_get(da->name, &pid) != 0) {
+ ERROR("sub_device %d init went wrong", i);
+ return -ENODEV;
+ }
+ } else {
+ char devstr[DEVARGS_MAXLEN] = "";
+ struct rte_devargs *probed_da =
+ rte_eth_devices[pid].device->devargs;
+
+ /* Take control of device probed by EAL options. */
+ free(da->args);
+ memset(da, 0, sizeof(*da));
+ if (probed_da != NULL)
+ snprintf(devstr, sizeof(devstr), "%s,%s",
+ probed_da->name, probed_da->args);
+ else
+ snprintf(devstr, sizeof(devstr), "%s",
+ rte_eth_devices[pid].device->name);
+ ret = rte_eal_devargs_parse(devstr, da);
+ if (ret) {
+ ERROR("Probed devargs parsing failed with code"
+ " %d", ret);
+ return ret;
+ }
+ INFO("Taking control of a probed sub device"
+ " %d named %s", i, da->name);
}
- if (ETH(sdev) == NULL) {
- ERROR("sub_device %d init went wrong", i);
- return -ENODEV;
+ ret = rte_eth_dev_owner_set(pid, &PRIV(dev)->my_owner);
+ if (ret < 0) {
+ INFO("sub_device %d owner set failed (%s),"
+ " will try again later", i, strerror(-ret));
+ continue;
+ } else if (strncmp(rte_eth_devices[pid].device->name, da->name,
+ strlen(da->name)) != 0) {
+ /*
+ * The device probably was removed and its port id was
+ * reallocated before ownership set.
+ */
+ rte_eth_dev_owner_unset(pid, PRIV(dev)->my_owner.id);
+ INFO("sub_device %d was probably removed before taking"
+ " ownership, will try again later", i);
+ continue;
}
+ ETH(sdev) = &rte_eth_devices[pid];
SUB_ID(sdev) = i;
sdev->fs_dev = dev;
sdev->dev = ETH(sdev)->device;
Code Review / deb_dpdk.git / blobdiff