-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * 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 Intel Corporation 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(c) 2010-2016 Intel Corporation
*/
#include <stdint.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
-#include <sys/types.h>
#include <sys/socket.h>
#include <rte_malloc.h>
#include <rte_kvargs.h>
-#include <rte_vdev.h>
+#include <rte_ethdev_vdev.h>
+#include <rte_bus_vdev.h>
#include <rte_alarm.h>
#include "virtio_ethdev.h"
#define virtio_user_get_dev(hw) \
((struct virtio_user_dev *)(hw)->virtio_user_dev)
+static int
+virtio_user_server_reconnect(struct virtio_user_dev *dev)
+{
+ int ret;
+ int flag;
+ int connectfd;
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->port_id];
+
+ connectfd = accept(dev->listenfd, NULL, NULL);
+ if (connectfd < 0)
+ return -1;
+
+ dev->vhostfd = connectfd;
+ if (dev->ops->send_request(dev, VHOST_USER_GET_FEATURES,
+ &dev->device_features) < 0) {
+ PMD_INIT_LOG(ERR, "get_features failed: %s",
+ strerror(errno));
+ return -1;
+ }
+
+ /* umask vhost-user unsupported features */
+ dev->device_features &= ~(dev->unsupported_features);
+
+ dev->features &= dev->device_features;
+
+ flag = fcntl(connectfd, F_GETFD);
+ fcntl(connectfd, F_SETFL, flag | O_NONBLOCK);
+
+ ret = virtio_user_start_device(dev);
+ if (ret < 0)
+ return -1;
+
+ if (dev->queue_pairs > 1) {
+ ret = virtio_user_handle_mq(dev, dev->queue_pairs);
+ if (ret != 0) {
+ PMD_INIT_LOG(ERR, "Fails to enable multi-queue pairs!");
+ return -1;
+ }
+ }
+ if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
+ if (rte_intr_disable(eth_dev->intr_handle) < 0) {
+ PMD_DRV_LOG(ERR, "interrupt disable failed");
+ return -1;
+ }
+ rte_intr_callback_unregister(eth_dev->intr_handle,
+ virtio_interrupt_handler,
+ eth_dev);
+ eth_dev->intr_handle->fd = connectfd;
+ rte_intr_callback_register(eth_dev->intr_handle,
+ virtio_interrupt_handler, eth_dev);
+
+ if (rte_intr_enable(eth_dev->intr_handle) < 0) {
+ PMD_DRV_LOG(ERR, "interrupt enable failed");
+ return -1;
+ }
+ }
+ PMD_INIT_LOG(NOTICE, "server mode virtio-user reconnection succeeds!");
+ return 0;
+}
+
static void
virtio_user_delayed_handler(void *param)
{
struct virtio_hw *hw = (struct virtio_hw *)param;
- struct rte_eth_dev *dev = &rte_eth_devices[hw->port_id];
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[hw->port_id];
+ struct virtio_user_dev *dev = virtio_user_get_dev(hw);
- rte_intr_callback_unregister(dev->intr_handle,
- virtio_interrupt_handler,
- dev);
+ if (rte_intr_disable(eth_dev->intr_handle) < 0) {
+ PMD_DRV_LOG(ERR, "interrupt disable failed");
+ return;
+ }
+ rte_intr_callback_unregister(eth_dev->intr_handle,
+ virtio_interrupt_handler, eth_dev);
+ if (dev->is_server) {
+ if (dev->vhostfd >= 0) {
+ close(dev->vhostfd);
+ dev->vhostfd = -1;
+ }
+ eth_dev->intr_handle->fd = dev->listenfd;
+ rte_intr_callback_register(eth_dev->intr_handle,
+ virtio_interrupt_handler, eth_dev);
+ if (rte_intr_enable(eth_dev->intr_handle) < 0) {
+ PMD_DRV_LOG(ERR, "interrupt enable failed");
+ return;
+ }
+ }
}
static void
int flags;
flags = fcntl(dev->vhostfd, F_GETFL);
- fcntl(dev->vhostfd, F_SETFL, flags | O_NONBLOCK);
+ if (fcntl(dev->vhostfd, F_SETFL,
+ flags | O_NONBLOCK) == -1) {
+ PMD_DRV_LOG(ERR, "error setting O_NONBLOCK flag");
+ return;
+ }
r = recv(dev->vhostfd, buf, 128, MSG_PEEK);
if (r == 0 || (r < 0 && errno != EAGAIN)) {
dev->status &= (~VIRTIO_NET_S_LINK_UP);
PMD_DRV_LOG(ERR, "virtio-user port %u is down",
hw->port_id);
- /* Only client mode is available now. Once the
- * connection is broken, it can never be up
- * again. Besides, this function could be called
- * in the process of interrupt handling,
- * callback cannot be unregistered here, set an
- * alarm to do it.
+
+ /* This function could be called in the process
+ * of interrupt handling, callback cannot be
+ * unregistered here, set an alarm to do it.
*/
rte_eal_alarm_set(1,
virtio_user_delayed_handler,
} else {
dev->status |= VIRTIO_NET_S_LINK_UP;
}
- fcntl(dev->vhostfd, F_SETFL, flags & (~O_NONBLOCK));
+ if (fcntl(dev->vhostfd, F_SETFL,
+ flags & ~O_NONBLOCK) == -1) {
+ PMD_DRV_LOG(ERR, "error clearing O_NONBLOCK flag");
+ return;
+ }
+ } else if (dev->is_server) {
+ dev->status &= (~VIRTIO_NET_S_LINK_UP);
+ if (virtio_user_server_reconnect(dev) >= 0)
+ dev->status |= VIRTIO_NET_S_LINK_UP;
}
+
*(uint16_t *)dst = dev->status;
}
VIRTIO_USER_ARG_QUEUE_SIZE,
#define VIRTIO_USER_ARG_INTERFACE_NAME "iface"
VIRTIO_USER_ARG_INTERFACE_NAME,
+#define VIRTIO_USER_ARG_SERVER_MODE "server"
+ VIRTIO_USER_ARG_SERVER_MODE,
+#define VIRTIO_USER_ARG_MRG_RXBUF "mrg_rxbuf"
+ VIRTIO_USER_ARG_MRG_RXBUF,
+#define VIRTIO_USER_ARG_IN_ORDER "in_order"
+ VIRTIO_USER_ARG_IN_ORDER,
NULL
};
#define VIRTIO_USER_DEF_CQ_EN 0
#define VIRTIO_USER_DEF_Q_NUM 1
#define VIRTIO_USER_DEF_Q_SZ 256
+#define VIRTIO_USER_DEF_SERVER_MODE 0
static int
get_string_arg(const char *key __rte_unused,
static struct rte_vdev_driver virtio_user_driver;
static struct rte_eth_dev *
-virtio_user_eth_dev_alloc(const char *name)
+virtio_user_eth_dev_alloc(struct rte_vdev_device *vdev)
{
struct rte_eth_dev *eth_dev;
struct rte_eth_dev_data *data;
struct virtio_hw *hw;
struct virtio_user_dev *dev;
- eth_dev = rte_eth_dev_allocate(name);
+ eth_dev = rte_eth_vdev_allocate(vdev, sizeof(*hw));
if (!eth_dev) {
PMD_INIT_LOG(ERR, "cannot alloc rte_eth_dev");
return NULL;
}
data = eth_dev->data;
-
- hw = rte_zmalloc(NULL, sizeof(*hw), 0);
- if (!hw) {
- PMD_INIT_LOG(ERR, "malloc virtio_hw failed");
- rte_eth_dev_release_port(eth_dev);
- return NULL;
- }
+ hw = eth_dev->data->dev_private;
dev = rte_zmalloc(NULL, sizeof(*dev), 0);
if (!dev) {
*/
hw->use_msix = 1;
hw->modern = 0;
- hw->use_simple_rxtx = 0;
+ hw->use_simple_rx = 0;
+ hw->use_inorder_rx = 0;
+ hw->use_inorder_tx = 0;
hw->virtio_user_dev = dev;
- data->dev_private = hw;
- data->drv_name = virtio_user_driver.driver.name;
- data->numa_node = SOCKET_ID_ANY;
- data->kdrv = RTE_KDRV_NONE;
- data->dev_flags = RTE_ETH_DEV_DETACHABLE;
- eth_dev->driver = NULL;
return eth_dev;
}
}
/* Dev initialization routine. Invoked once for each virtio vdev at
- * EAL init time, see rte_eal_dev_init().
+ * EAL init time, see rte_bus_probe().
* Returns 0 on success.
*/
static int
-virtio_user_pmd_probe(const char *name, const char *params)
+virtio_user_pmd_probe(struct rte_vdev_device *dev)
{
struct rte_kvargs *kvlist = NULL;
struct rte_eth_dev *eth_dev;
uint64_t queues = VIRTIO_USER_DEF_Q_NUM;
uint64_t cq = VIRTIO_USER_DEF_CQ_EN;
uint64_t queue_size = VIRTIO_USER_DEF_Q_SZ;
+ uint64_t server_mode = VIRTIO_USER_DEF_SERVER_MODE;
+ uint64_t mrg_rxbuf = 1;
+ uint64_t in_order = 1;
char *path = NULL;
char *ifname = NULL;
char *mac_addr = NULL;
int ret = -1;
- if (!params || params[0] == '\0') {
- PMD_INIT_LOG(ERR, "arg %s is mandatory for virtio_user",
- VIRTIO_USER_ARG_QUEUE_SIZE);
- goto end;
- }
-
- kvlist = rte_kvargs_parse(params, valid_args);
+ kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_args);
if (!kvlist) {
PMD_INIT_LOG(ERR, "error when parsing param");
goto end;
}
}
+ if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_SERVER_MODE) == 1) {
+ if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_SERVER_MODE,
+ &get_integer_arg, &server_mode) < 0) {
+ PMD_INIT_LOG(ERR, "error to parse %s",
+ VIRTIO_USER_ARG_SERVER_MODE);
+ goto end;
+ }
+ }
+
if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_CQ_NUM) == 1) {
if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_CQ_NUM,
&get_integer_arg, &cq) < 0) {
goto end;
}
- eth_dev = virtio_user_eth_dev_alloc(name);
- if (!eth_dev) {
- PMD_INIT_LOG(ERR, "virtio_user fails to alloc device");
- goto end;
+ if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_MRG_RXBUF) == 1) {
+ if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_MRG_RXBUF,
+ &get_integer_arg, &mrg_rxbuf) < 0) {
+ PMD_INIT_LOG(ERR, "error to parse %s",
+ VIRTIO_USER_ARG_MRG_RXBUF);
+ goto end;
+ }
}
- hw = eth_dev->data->dev_private;
- if (virtio_user_dev_init(hw->virtio_user_dev, path, queues, cq,
- queue_size, mac_addr, &ifname) < 0) {
- PMD_INIT_LOG(ERR, "virtio_user_dev_init fails");
- virtio_user_eth_dev_free(eth_dev);
- goto end;
+ if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_IN_ORDER) == 1) {
+ if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_IN_ORDER,
+ &get_integer_arg, &in_order) < 0) {
+ PMD_INIT_LOG(ERR, "error to parse %s",
+ VIRTIO_USER_ARG_IN_ORDER);
+ goto end;
+ }
+ }
+
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+ struct virtio_user_dev *vu_dev;
+
+ eth_dev = virtio_user_eth_dev_alloc(dev);
+ if (!eth_dev) {
+ PMD_INIT_LOG(ERR, "virtio_user fails to alloc device");
+ goto end;
+ }
+
+ hw = eth_dev->data->dev_private;
+ vu_dev = virtio_user_get_dev(hw);
+ if (server_mode == 1)
+ vu_dev->is_server = true;
+ else
+ vu_dev->is_server = false;
+ if (virtio_user_dev_init(hw->virtio_user_dev, path, queues, cq,
+ queue_size, mac_addr, &ifname, mrg_rxbuf,
+ in_order) < 0) {
+ PMD_INIT_LOG(ERR, "virtio_user_dev_init fails");
+ virtio_user_eth_dev_free(eth_dev);
+ goto end;
+ }
+
+ } else {
+ eth_dev = rte_eth_dev_attach_secondary(rte_vdev_device_name(dev));
+ if (!eth_dev)
+ goto end;
}
- /* previously called by rte_eal_pci_probe() for physical dev */
+ /* previously called by rte_pci_probe() for physical dev */
if (eth_virtio_dev_init(eth_dev) < 0) {
PMD_INIT_LOG(ERR, "eth_virtio_dev_init fails");
virtio_user_eth_dev_free(eth_dev);
goto end;
}
+
+ rte_eth_dev_probing_finish(eth_dev);
ret = 0;
end:
/** Called by rte_eth_dev_detach() */
static int
-virtio_user_pmd_remove(const char *name)
+virtio_user_pmd_remove(struct rte_vdev_device *vdev)
{
+ const char *name;
struct rte_eth_dev *eth_dev;
struct virtio_hw *hw;
struct virtio_user_dev *dev;
- if (!name)
+ if (!vdev)
return -EINVAL;
+ name = rte_vdev_device_name(vdev);
PMD_DRV_LOG(INFO, "Un-Initializing %s", name);
eth_dev = rte_eth_dev_allocated(name);
if (!eth_dev)
virtio_user_dev_uninit(dev);
rte_free(eth_dev->data->dev_private);
- rte_free(eth_dev->data);
rte_eth_dev_release_port(eth_dev);
return 0;
"cq=<int> "
"queue_size=<int> "
"queues=<int> "
- "iface=<string>");
+ "iface=<string> "
+ "server=<0|1> "
+ "mrg_rxbuf=<0|1> "
+ "in_order=<0|1>");