#include <sys/types.h>
#include <sys/stat.h>
+#include <rte_alarm.h>
#include <rte_string_fns.h>
#include <rte_eal_memconfig.h>
int callfd;
int kickfd;
- for (i = 0; i < VIRTIO_MAX_VIRTQUEUES; ++i) {
- if (i >= dev->max_queue_pairs * 2) {
- dev->kickfds[i] = -1;
- dev->callfds[i] = -1;
- continue;
- }
-
+ for (i = 0; i < dev->max_queue_pairs * 2; i++) {
/* May use invalid flag, but some backend uses kickfd and
* callfd as criteria to judge if dev is alive. so finally we
* use real event_fd.
callfd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
if (callfd < 0) {
PMD_DRV_LOG(ERR, "(%s) callfd error, %s", dev->path, strerror(errno));
- break;
+ goto err;
}
kickfd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
if (kickfd < 0) {
close(callfd);
PMD_DRV_LOG(ERR, "(%s) kickfd error, %s", dev->path, strerror(errno));
- break;
+ goto err;
}
dev->callfds[i] = callfd;
dev->kickfds[i] = kickfd;
}
- if (i < VIRTIO_MAX_VIRTQUEUES) {
- for (j = 0; j < i; ++j) {
- close(dev->callfds[j]);
+ return 0;
+err:
+ for (j = 0; j < i; j++) {
+ if (dev->kickfds[j] >= 0) {
close(dev->kickfds[j]);
+ dev->kickfds[j] = -1;
+ }
+ if (dev->callfds[j] >= 0) {
+ close(dev->callfds[j]);
+ dev->callfds[j] = -1;
}
-
- return -1;
}
- return 0;
+ return -1;
+}
+
+static void
+virtio_user_dev_uninit_notify(struct virtio_user_dev *dev)
+{
+ uint32_t i;
+
+ for (i = 0; i < dev->max_queue_pairs * 2; ++i) {
+ if (dev->kickfds[i] >= 0) {
+ close(dev->kickfds[i]);
+ dev->kickfds[i] = -1;
+ }
+ if (dev->callfds[i] >= 0) {
+ close(dev->callfds[i]);
+ dev->callfds[i] = -1;
+ }
+ }
}
static int
virtio_user_fill_intr_handle(struct virtio_user_dev *dev)
{
uint32_t i;
- struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->port_id];
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
if (!eth_dev->intr_handle) {
eth_dev->intr_handle = malloc(sizeof(*eth_dev->intr_handle));
eth_dev->intr_handle->type = RTE_INTR_HANDLE_VDEV;
/* For virtio vdev, no need to read counter for clean */
eth_dev->intr_handle->efd_counter_size = 0;
- eth_dev->intr_handle->fd = -1;
- if (dev->vhostfd >= 0)
- eth_dev->intr_handle->fd = dev->vhostfd;
- else if (dev->is_server)
- eth_dev->intr_handle->fd = dev->listenfd;
+ eth_dev->intr_handle->fd = dev->ops->get_intr_fd(dev);
return 0;
}
static int
virtio_user_dev_setup(struct virtio_user_dev *dev)
{
- uint32_t q;
-
- dev->vhostfd = -1;
- dev->vhostfds = NULL;
- dev->tapfds = NULL;
-
if (dev->is_server) {
if (dev->backend_type != VIRTIO_USER_BACKEND_VHOST_USER) {
PMD_DRV_LOG(ERR, "Server mode only supports vhost-user!");
}
}
- if (dev->backend_type == VIRTIO_USER_BACKEND_VHOST_USER) {
+ switch (dev->backend_type) {
+ case VIRTIO_USER_BACKEND_VHOST_USER:
dev->ops = &virtio_ops_user;
- } else if (dev->backend_type ==
- VIRTIO_USER_BACKEND_VHOST_KERNEL) {
+ break;
+ case VIRTIO_USER_BACKEND_VHOST_KERNEL:
dev->ops = &virtio_ops_kernel;
-
- dev->vhostfds = malloc(dev->max_queue_pairs *
- sizeof(int));
- dev->tapfds = malloc(dev->max_queue_pairs *
- sizeof(int));
- if (!dev->vhostfds || !dev->tapfds) {
- PMD_INIT_LOG(ERR, "(%s) Failed to allocate FDs", dev->path);
- return -1;
- }
-
- for (q = 0; q < dev->max_queue_pairs; ++q) {
- dev->vhostfds[q] = -1;
- dev->tapfds[q] = -1;
- }
- } else if (dev->backend_type ==
- VIRTIO_USER_BACKEND_VHOST_VDPA) {
+ break;
+ case VIRTIO_USER_BACKEND_VHOST_VDPA:
dev->ops = &virtio_ops_vdpa;
- } else {
+ break;
+ default:
PMD_DRV_LOG(ERR, "(%s) Unknown backend type", dev->path);
return -1;
}
-
if (dev->ops->setup(dev) < 0) {
PMD_INIT_LOG(ERR, "(%s) Failed to setup backend\n", dev->path);
return -1;
if (virtio_user_dev_init_notify(dev) < 0) {
PMD_INIT_LOG(ERR, "(%s) Failed to init notifiers\n", dev->path);
- return -1;
+ goto destroy;
}
if (virtio_user_fill_intr_handle(dev) < 0) {
PMD_INIT_LOG(ERR, "(%s) Failed to init interrupt handler\n", dev->path);
- return -1;
+ goto uninit;
}
return 0;
+
+uninit:
+ virtio_user_dev_uninit_notify(dev);
+destroy:
+ dev->ops->destroy(dev);
+
+ return -1;
}
/* Use below macro to filter features from vhost backend */
enum virtio_user_backend_type backend_type)
{
uint64_t backend_features;
+ int i;
pthread_mutex_init(&dev->mutex, NULL);
strlcpy(dev->path, path, PATH_MAX);
+
+ for (i = 0; i < VIRTIO_MAX_VIRTQUEUES; i++) {
+ dev->kickfds[i] = -1;
+ dev->callfds[i] = -1;
+ }
+
dev->started = 0;
dev->max_queue_pairs = queues;
dev->queue_pairs = 1; /* mq disabled by default */
void
virtio_user_dev_uninit(struct virtio_user_dev *dev)
{
- uint32_t i;
-
virtio_user_stop_device(dev);
rte_mem_event_callback_unregister(VIRTIO_USER_MEM_EVENT_CLB_NAME, dev);
- for (i = 0; i < dev->max_queue_pairs * 2; ++i) {
- close(dev->callfds[i]);
- close(dev->kickfds[i]);
- }
-
- if (dev->vhostfd >= 0)
- close(dev->vhostfd);
-
- if (dev->is_server && dev->listenfd >= 0) {
- close(dev->listenfd);
- dev->listenfd = -1;
- }
-
- if (dev->vhostfds) {
- for (i = 0; i < dev->max_queue_pairs; ++i) {
- close(dev->vhostfds[i]);
- if (dev->tapfds[i] >= 0)
- close(dev->tapfds[i]);
- }
- free(dev->vhostfds);
- free(dev->tapfds);
- }
+ virtio_user_dev_uninit_notify(dev);
free(dev->ifname);
return -1;
}
- /* Server mode can't enable queue pairs if vhostfd is invalid,
- * always return 0 in this case.
- */
- if (!dev->is_server || dev->vhostfd >= 0) {
- for (i = 0; i < q_pairs; ++i)
- ret |= dev->ops->enable_qp(dev, i, 1);
- for (i = q_pairs; i < dev->max_queue_pairs; ++i)
- ret |= dev->ops->enable_qp(dev, i, 0);
- }
+ for (i = 0; i < q_pairs; ++i)
+ ret |= dev->ops->enable_qp(dev, i, 1);
+ for (i = q_pairs; i < dev->max_queue_pairs; ++i)
+ ret |= dev->ops->enable_qp(dev, i, 0);
+
dev->queue_pairs = q_pairs;
return ret;
pthread_mutex_unlock(&dev->mutex);
return ret;
}
+
+int
+virtio_user_dev_update_link_state(struct virtio_user_dev *dev)
+{
+ if (dev->ops->update_link_state)
+ return dev->ops->update_link_state(dev);
+
+ return 0;
+}
+
+static void
+virtio_user_dev_reset_queues_packed(struct rte_eth_dev *eth_dev)
+{
+ struct virtio_user_dev *dev = eth_dev->data->dev_private;
+ struct virtio_hw *hw = &dev->hw;
+ struct virtnet_rx *rxvq;
+ struct virtnet_tx *txvq;
+ uint16_t i;
+
+ /* Add lock to avoid queue contention. */
+ rte_spinlock_lock(&hw->state_lock);
+ hw->started = 0;
+
+ /*
+ * Waiting for datapath to complete before resetting queues.
+ * 1 ms should be enough for the ongoing Tx/Rx function to finish.
+ */
+ rte_delay_ms(1);
+
+ /* Vring reset for each Tx queue and Rx queue. */
+ for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
+ rxvq = eth_dev->data->rx_queues[i];
+ virtqueue_rxvq_reset_packed(virtnet_rxq_to_vq(rxvq));
+ virtio_dev_rx_queue_setup_finish(eth_dev, i);
+ }
+
+ for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
+ txvq = eth_dev->data->tx_queues[i];
+ virtqueue_txvq_reset_packed(virtnet_txq_to_vq(txvq));
+ }
+
+ hw->started = 1;
+ rte_spinlock_unlock(&hw->state_lock);
+}
+
+void
+virtio_user_dev_delayed_disconnect_handler(void *param)
+{
+ struct virtio_user_dev *dev = param;
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
+
+ if (rte_intr_disable(eth_dev->intr_handle) < 0) {
+ PMD_DRV_LOG(ERR, "interrupt disable failed");
+ return;
+ }
+ PMD_DRV_LOG(DEBUG, "Unregistering intr fd: %d",
+ eth_dev->intr_handle->fd);
+ if (rte_intr_callback_unregister(eth_dev->intr_handle,
+ virtio_interrupt_handler,
+ eth_dev) != 1)
+ PMD_DRV_LOG(ERR, "interrupt unregister failed");
+
+ if (dev->is_server) {
+ if (dev->ops->server_disconnect)
+ dev->ops->server_disconnect(dev);
+
+ eth_dev->intr_handle->fd = dev->ops->get_intr_fd(dev);
+
+ PMD_DRV_LOG(DEBUG, "Registering intr fd: %d",
+ eth_dev->intr_handle->fd);
+
+ if (rte_intr_callback_register(eth_dev->intr_handle,
+ virtio_interrupt_handler,
+ eth_dev))
+ PMD_DRV_LOG(ERR, "interrupt register failed");
+
+ if (rte_intr_enable(eth_dev->intr_handle) < 0) {
+ PMD_DRV_LOG(ERR, "interrupt enable failed");
+ return;
+ }
+ }
+}
+
+static void
+virtio_user_dev_delayed_intr_reconfig_handler(void *param)
+{
+ struct virtio_user_dev *dev = param;
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
+
+ PMD_DRV_LOG(DEBUG, "Unregistering intr fd: %d",
+ eth_dev->intr_handle->fd);
+
+ if (rte_intr_callback_unregister(eth_dev->intr_handle,
+ virtio_interrupt_handler,
+ eth_dev) != 1)
+ PMD_DRV_LOG(ERR, "interrupt unregister failed");
+
+ eth_dev->intr_handle->fd = dev->ops->get_intr_fd(dev);
+
+ PMD_DRV_LOG(DEBUG, "Registering intr fd: %d", eth_dev->intr_handle->fd);
+
+ if (rte_intr_callback_register(eth_dev->intr_handle,
+ virtio_interrupt_handler, eth_dev))
+ PMD_DRV_LOG(ERR, "interrupt register failed");
+
+ if (rte_intr_enable(eth_dev->intr_handle) < 0)
+ PMD_DRV_LOG(ERR, "interrupt enable failed");
+}
+
+int
+virtio_user_dev_server_reconnect(struct virtio_user_dev *dev)
+{
+ int ret, old_status;
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
+ struct virtio_hw *hw = &dev->hw;
+
+ if (!dev->ops->server_reconnect) {
+ PMD_DRV_LOG(ERR, "(%s) Missing server reconnect callback", dev->path);
+ return -1;
+ }
+
+ if (dev->ops->server_reconnect(dev)) {
+ PMD_DRV_LOG(ERR, "(%s) Reconnect callback call failed", dev->path);
+ return -1;
+ }
+
+ old_status = dev->status;
+
+ virtio_reset(hw);
+
+ virtio_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
+
+ virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
+
+ if (dev->ops->get_features(dev, &dev->device_features) < 0) {
+ PMD_INIT_LOG(ERR, "get_features failed: %s",
+ strerror(errno));
+ return -1;
+ }
+
+ dev->device_features |= dev->frontend_features;
+
+ /* unmask vhost-user unsupported features */
+ dev->device_features &= ~(dev->unsupported_features);
+
+ dev->features &= dev->device_features;
+
+ /* For packed ring, resetting queues is required in reconnection. */
+ if (virtio_with_packed_queue(hw) &&
+ (old_status & VIRTIO_CONFIG_STATUS_DRIVER_OK)) {
+ PMD_INIT_LOG(NOTICE, "Packets on the fly will be dropped"
+ " when packed ring reconnecting.");
+ virtio_user_dev_reset_queues_packed(eth_dev);
+ }
+
+ virtio_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
+
+ /* Start the device */
+ virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER_OK);
+ if (!dev->started)
+ 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;
+ }
+ /*
+ * This function can be called from the interrupt handler, so
+ * we can't unregister interrupt handler here. Setting
+ * alarm to do that later.
+ */
+ rte_eal_alarm_set(1,
+ virtio_user_dev_delayed_intr_reconfig_handler,
+ (void *)dev);
+ }
+ PMD_INIT_LOG(NOTICE, "server mode virtio-user reconnection succeeds!");
+ return 0;
+}
git.droids-corp.org / dpdk.git / blobdiff