[3/4] net/virtio: fix shadow control queue notification init
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Commit Message
The Virtio-user control queue kick and call FDs were not
uninitialized at device stop time.
This patch fixes this using the queues iterator helper for
both initialization and uninitialization.
Fixes: 90966e8e5b67 ("net/virtio-user: send shadow virtqueue info to the backend")
Cc: stable@dpdk.org
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
.../net/virtio/virtio_user/virtio_user_dev.c | 90 +++++++++----------
1 file changed, 43 insertions(+), 47 deletions(-)
@@ -33,6 +33,45 @@ const char * const virtio_user_backend_strings[] = {
[VIRTIO_USER_BACKEND_VHOST_VDPA] = "VHOST_VDPA",
};
+static int
+virtio_user_uninit_notify_queue(struct virtio_user_dev *dev, uint32_t queue_sel)
+{
+ if (dev->kickfds[queue_sel] >= 0) {
+ close(dev->kickfds[queue_sel]);
+ dev->kickfds[queue_sel] = -1;
+ }
+
+ if (dev->callfds[queue_sel] >= 0) {
+ close(dev->callfds[queue_sel]);
+ dev->callfds[queue_sel] = -1;
+ }
+
+ return 0;
+}
+
+static int
+virtio_user_init_notify_queue(struct virtio_user_dev *dev, uint32_t queue_sel)
+{
+ /* 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.
+ */
+ dev->callfds[queue_sel] = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
+ if (dev->callfds[queue_sel] < 0) {
+ PMD_DRV_LOG(ERR, "(%s) Failed to setup callfd for queue %u: %s",
+ dev->path, queue_sel, strerror(errno));
+ return -1;
+ }
+ dev->kickfds[queue_sel] = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
+ if (dev->kickfds[queue_sel] < 0) {
+ PMD_DRV_LOG(ERR, "(%s) Failed to setup kickfd for queue %u: %s",
+ dev->path, queue_sel, strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
static int
virtio_user_destroy_queue(struct virtio_user_dev *dev, uint32_t queue_sel)
{
@@ -423,33 +462,9 @@ virtio_user_dev_init_mac(struct virtio_user_dev *dev, const char *mac)
static int
virtio_user_dev_init_notify(struct virtio_user_dev *dev)
{
- uint32_t i, j, nr_vq;
- int callfd;
- int kickfd;
-
- nr_vq = dev->max_queue_pairs * 2;
- if (dev->hw_cvq)
- nr_vq++;
- for (i = 0; i < nr_vq; 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));
- 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));
- goto err;
- }
- dev->callfds[i] = callfd;
- dev->kickfds[i] = kickfd;
- }
+ if (virtio_user_foreach_queue(dev, virtio_user_init_notify_queue) < 0)
+ goto err;
if (dev->device_features & (1ULL << VIRTIO_F_NOTIFICATION_DATA))
if (dev->ops->map_notification_area &&
@@ -458,16 +473,7 @@ virtio_user_dev_init_notify(struct virtio_user_dev *dev)
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;
- }
- }
+ virtio_user_foreach_queue(dev, virtio_user_uninit_notify_queue);
return -1;
}
@@ -475,18 +481,8 @@ virtio_user_dev_init_notify(struct virtio_user_dev *dev)
static void
virtio_user_dev_uninit_notify(struct virtio_user_dev *dev)
{
- uint32_t i;
+ virtio_user_foreach_queue(dev, virtio_user_uninit_notify_queue);
- 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;
- }
- }
if (dev->ops->unmap_notification_area && dev->notify_area)
dev->ops->unmap_notification_area(dev);
}