#include "virtio_user_dev.h"
#include "../virtio_ethdev.h"
+#define VIRTIO_USER_MEM_EVENT_CLB_NAME "virtio_user_mem_event_clb"
+
static int
virtio_user_create_queue(struct virtio_user_dev *dev, uint32_t queue_sel)
{
return 0;
}
+int
+is_vhost_user_by_type(const char *path)
+{
+ struct stat sb;
+
+ if (stat(path, &sb) == -1)
+ return 0;
+
+ return S_ISSOCK(sb.st_mode);
+}
+
int
virtio_user_start_device(struct virtio_user_dev *dev)
{
uint64_t features;
int ret;
+ pthread_mutex_lock(&dev->mutex);
+
+ if (is_vhost_user_by_type(dev->path) && dev->vhostfd < 0)
+ goto error;
+
+ /* Do not check return as already done in init, or reset in stop */
+ dev->ops->send_request(dev, VHOST_USER_SET_OWNER, NULL);
+
/* Step 0: tell vhost to create queues */
if (virtio_user_queue_setup(dev, virtio_user_create_queue) < 0)
goto error;
*/
dev->ops->enable_qp(dev, 0, 1);
+ dev->started = true;
+ pthread_mutex_unlock(&dev->mutex);
+
return 0;
error:
+ pthread_mutex_unlock(&dev->mutex);
/* TODO: free resource here or caller to check */
return -1;
}
{
uint32_t i;
+ pthread_mutex_lock(&dev->mutex);
for (i = 0; i < dev->max_queue_pairs; ++i)
dev->ops->enable_qp(dev, i, 0);
+ if (dev->ops->send_request(dev, VHOST_USER_RESET_OWNER, NULL) < 0) {
+ PMD_DRV_LOG(INFO, "Failed to reset the device\n");
+ pthread_mutex_unlock(&dev->mutex);
+ return -1;
+ }
+ dev->started = false;
+ pthread_mutex_unlock(&dev->mutex);
+
return 0;
}
}
}
-int
-is_vhost_user_by_type(const char *path)
-{
- struct stat sb;
-
- if (stat(path, &sb) == -1)
- return 0;
-
- return S_ISSOCK(sb.st_mode);
-}
-
static int
virtio_user_dev_init_notify(struct virtio_user_dev *dev)
{
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;
return 0;
}
+static void
+virtio_user_mem_event_cb(enum rte_mem_event type __rte_unused,
+ const void *addr __rte_unused,
+ size_t len __rte_unused,
+ void *arg)
+{
+ struct virtio_user_dev *dev = arg;
+ uint16_t i;
+
+ pthread_mutex_lock(&dev->mutex);
+
+ if (dev->started == false)
+ goto exit;
+
+ /* Step 1: pause the active queues */
+ for (i = 0; i < dev->queue_pairs; i++)
+ dev->ops->enable_qp(dev, i, 0);
+
+ /* Step 2: update memory regions */
+ dev->ops->send_request(dev, VHOST_USER_SET_MEM_TABLE, NULL);
+
+ /* Step 3: resume the active queues */
+ for (i = 0; i < dev->queue_pairs; i++)
+ dev->ops->enable_qp(dev, i, 1);
+
+exit:
+ pthread_mutex_unlock(&dev->mutex);
+}
+
static int
virtio_user_dev_setup(struct virtio_user_dev *dev)
{
dev->vhostfds = NULL;
dev->tapfds = NULL;
- if (is_vhost_user_by_type(dev->path)) {
- dev->ops = &ops_user;
- } else {
- dev->ops = &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, "Failed to malloc");
+ if (dev->is_server) {
+ if (access(dev->path, F_OK) == 0 &&
+ !is_vhost_user_by_type(dev->path)) {
+ PMD_DRV_LOG(ERR, "Server mode doesn't support vhost-kernel!");
return -1;
}
-
- for (q = 0; q < dev->max_queue_pairs; ++q) {
- dev->vhostfds[q] = -1;
- dev->tapfds[q] = -1;
+ dev->ops = &ops_user;
+ } else {
+ if (is_vhost_user_by_type(dev->path)) {
+ dev->ops = &ops_user;
+ } else {
+ dev->ops = &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, "Failed to malloc");
+ return -1;
+ }
+
+ for (q = 0; q < dev->max_queue_pairs; ++q) {
+ dev->vhostfds[q] = -1;
+ dev->tapfds[q] = -1;
+ }
}
}
int
virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues,
- int cq, int queue_size, const char *mac, char **ifname)
+ int cq, int queue_size, const char *mac, char **ifname,
+ int mrg_rxbuf, int in_order)
{
+ pthread_mutex_init(&dev->mutex, NULL);
snprintf(dev->path, PATH_MAX, "%s", path);
+ dev->started = 0;
dev->max_queue_pairs = queues;
dev->queue_pairs = 1; /* mq disabled by default */
dev->queue_size = queue_size;
dev->mac_specified = 0;
+ dev->unsupported_features = 0;
parse_mac(dev, mac);
if (*ifname) {
PMD_INIT_LOG(ERR, "backend set up fails");
return -1;
}
- if (dev->ops->send_request(dev, VHOST_USER_SET_OWNER, NULL) < 0) {
- PMD_INIT_LOG(ERR, "set_owner fails: %s", strerror(errno));
- return -1;
+
+ if (!dev->is_server) {
+ if (dev->ops->send_request(dev, VHOST_USER_SET_OWNER,
+ NULL) < 0) {
+ PMD_INIT_LOG(ERR, "set_owner fails: %s",
+ strerror(errno));
+ return -1;
+ }
+
+ 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;
+ }
+ } else {
+ /* We just pretend vhost-user can support all these features.
+ * Note that this could be problematic that if some feature is
+ * negotiated but not supported by the vhost-user which comes
+ * later.
+ */
+ dev->device_features = VIRTIO_USER_SUPPORTED_FEATURES;
}
- 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;
+ if (!mrg_rxbuf) {
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_MRG_RXBUF);
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_MRG_RXBUF);
}
- if (dev->mac_specified)
+
+ if (!in_order) {
+ dev->device_features &= ~(1ull << VIRTIO_F_IN_ORDER);
+ dev->unsupported_features |= (1ull << VIRTIO_F_IN_ORDER);
+ }
+
+ if (dev->mac_specified) {
dev->device_features |= (1ull << VIRTIO_NET_F_MAC);
+ } else {
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_MAC);
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_MAC);
+ }
if (cq) {
/* device does not really need to know anything about CQ,
dev->device_features &= ~(1ull << VIRTIO_NET_F_GUEST_ANNOUNCE);
dev->device_features &= ~(1ull << VIRTIO_NET_F_MQ);
dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_VQ);
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_RX);
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_VLAN);
+ dev->unsupported_features |=
+ (1ull << VIRTIO_NET_F_GUEST_ANNOUNCE);
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_MQ);
+ dev->unsupported_features |=
+ (1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
}
/* The backend will not report this feature, we add it explicitly */
dev->device_features |= (1ull << VIRTIO_NET_F_STATUS);
dev->device_features &= VIRTIO_USER_SUPPORTED_FEATURES;
+ dev->unsupported_features |= ~VIRTIO_USER_SUPPORTED_FEATURES;
+
+ if (rte_mem_event_callback_register(VIRTIO_USER_MEM_EVENT_CLB_NAME,
+ virtio_user_mem_event_cb, dev)) {
+ if (rte_errno != ENOTSUP) {
+ PMD_INIT_LOG(ERR, "Failed to register mem event"
+ " callback\n");
+ return -1;
+ }
+ }
return 0;
}
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]);
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]);
}
free(dev->ifname);
+
+ if (dev->is_server)
+ unlink(dev->path);
}
-static uint8_t
+uint8_t
virtio_user_handle_mq(struct virtio_user_dev *dev, uint16_t q_pairs)
{
uint16_t i;
return -1;
}
- 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);
-
+ /* Server mode can't enable queue pairs if vhostfd is invalid,
+ * always return 0 in this case.
+ */
+ if (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);
+ } else if (!dev->is_server) {
+ ret = ~0;
+ }
dev->queue_pairs = q_pairs;
return ret;
git.droids-corp.org / dpdk.git / blobdiff