#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;
+ flag = fcntl(connectfd, F_GETFD);
+ fcntl(connectfd, F_SETFL, flag | O_NONBLOCK);
+
+ ret = virtio_user_start_device(dev);
+ if (ret < 0)
+ 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
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,
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,
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;
char *path = NULL;
char *ifname = NULL;
char *mac_addr = NULL;
}
}
+ 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) {
}
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");
}
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) < 0) {
PMD_INIT_LOG(ERR, "virtio_user_dev_init fails");