Maxime Coquelin 2ae39a113a vhost: restore avail index from vring used index on disconnection ... vhost_virtqueue_stop() gets avail index value from the backend, except if the backend is not responding. It happens when the backend crashes, and in this case, internal state of the virtio queue is inconsistent, making packets to corrupt the vring state. With a Linux guest, it results in following error message on backend reconnection: [ 22.444905] virtio_net virtio0: output.0:id 0 is not a head! [ 22.446746] net enp0s3: Unexpected TXQ (0) queue failure: -5 [ 22.476360] net enp0s3: Unexpected TXQ (0) queue failure: -5 Fixes: 283e2c2adc ("net: virtio-net discards TX data after link down") Cc: qemu-stable@nongnu.org Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>		2017-12-01 19:05:58 +02:00
..
Makefile.objs
trace-events
vhost-backend.c
vhost-stub.c
vhost-user.c	vhost-user: fix legacy cross-endian configurations	2017-08-02 00:13:25 +03:00
vhost-vsock.c	migration: pre_save return int	2017-09-27 11:35:59 +01:00
vhost.c	vhost: restore avail index from vring used index on disconnection	2017-12-01 19:05:58 +02:00
virtio-balloon.c	Convert single line fprintf(.../n) to warn_report()	2017-09-19 14:09:34 +02:00
virtio-bus.c
virtio-crypto-pci.c
virtio-crypto.c
virtio-mmio.c
virtio-pci.c	virtio-pci: Replace modern_as with direct access to modern_bar	2017-10-15 05:54:44 +03:00
virtio-pci.h	virtio-pci: Replace modern_as with direct access to modern_bar	2017-10-15 05:54:44 +03:00
virtio-rng.c
virtio.c	virtio: Add queue interface to restore avail index from vring used index	2017-12-01 19:05:58 +02:00