diff options
Diffstat (limited to 'drivers/vhost/vsock.c')
| -rw-r--r-- | drivers/vhost/vsock.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index ce5e63d2c66a..d939ac1a4997 100644 --- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -176,6 +176,11 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock, restart_tx = true; } + /* Deliver to monitoring devices all correctly transmitted + * packets. + */ + virtio_transport_deliver_tap_pkt(pkt); + virtio_transport_free_pkt(pkt); } if (added) @@ -223,6 +228,46 @@ vhost_transport_send_pkt(struct virtio_vsock_pkt *pkt) return len; } +static int +vhost_transport_cancel_pkt(struct vsock_sock *vsk) +{ + struct vhost_vsock *vsock; + struct virtio_vsock_pkt *pkt, *n; + int cnt = 0; + LIST_HEAD(freeme); + + /* Find the vhost_vsock according to guest context id */ + vsock = vhost_vsock_get(vsk->remote_addr.svm_cid); + if (!vsock) + return -ENODEV; + + spin_lock_bh(&vsock->send_pkt_list_lock); + list_for_each_entry_safe(pkt, n, &vsock->send_pkt_list, list) { + if (pkt->vsk != vsk) + continue; + list_move(&pkt->list, &freeme); + } + spin_unlock_bh(&vsock->send_pkt_list_lock); + + list_for_each_entry_safe(pkt, n, &freeme, list) { + if (pkt->reply) + cnt++; + list_del(&pkt->list); + virtio_transport_free_pkt(pkt); + } + + if (cnt) { + struct vhost_virtqueue *tx_vq = &vsock->vqs[VSOCK_VQ_TX]; + int new_cnt; + + new_cnt = atomic_sub_return(cnt, &vsock->queued_replies); + if (new_cnt + cnt >= tx_vq->num && new_cnt < tx_vq->num) + vhost_poll_queue(&tx_vq->poll); + } + + return 0; +} + static struct virtio_vsock_pkt * vhost_vsock_alloc_pkt(struct vhost_virtqueue *vq, unsigned int out, unsigned int in) @@ -343,6 +388,9 @@ static void vhost_vsock_handle_tx_kick(struct vhost_work *work) len = pkt->len; + /* Deliver to monitoring devices all received packets */ + virtio_transport_deliver_tap_pkt(pkt); + /* Only accept correctly addressed packets */ if (le64_to_cpu(pkt->hdr.src_cid) == vsock->guest_cid) virtio_transport_recv_pkt(pkt); @@ -675,6 +723,7 @@ static struct virtio_transport vhost_transport = { .release = virtio_transport_release, .connect = virtio_transport_connect, .shutdown = virtio_transport_shutdown, + .cancel_pkt = vhost_transport_cancel_pkt, .dgram_enqueue = virtio_transport_dgram_enqueue, .dgram_dequeue = virtio_transport_dgram_dequeue, |