linux_dsm_epyc7002/drivers/vhost
Stefano Garzarella a78d163978 vsock/virtio: fix multiple packet delivery to monitoring devices
In virtio_transport.c, if the virtqueue is full, the transmitting
packet is queued up and it will be sent in the next iteration.
This causes the same packet to be delivered multiple times to
monitoring devices.

We want to continue to deliver packets to monitoring devices before
it is put in the virtqueue, to avoid that replies can appear in the
packet capture before the transmitted packet.

This patch fixes the issue, adding a new flag (tap_delivered) in
struct virtio_vsock_pkt, to check if the packet is already delivered
to monitoring devices.

In vhost/vsock.c, we are splitting packets, so we must set
'tap_delivered' to false when we queue up the same virtio_vsock_pkt
to handle the remaining bytes.

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-27 10:18:01 -07:00
..
iotlb.c vhost: factor out IOTLB 2020-04-01 12:06:26 -04:00
Kconfig vhost: disable for OABI 2020-04-20 10:19:22 -04:00
Makefile vhost: introduce vDPA-based backend 2020-04-02 10:41:40 -04:00
net.c vhost: Create accessors for virtqueues private_data 2020-04-16 18:31:07 -04:00
scsi.c vhost: Create accessors for virtqueues private_data 2020-04-16 18:31:07 -04:00
test.c virtio/test: fix up after IOTLB changes 2020-04-16 18:31:08 -04:00
test.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vdpa.c vhost: remove set but not used variable 'status' 2020-04-16 18:31:03 -04:00
vhost.c vhost: factor out IOTLB 2020-04-01 12:06:26 -04:00
vhost.h vhost: Create accessors for virtqueues private_data 2020-04-16 18:31:07 -04:00
vringh.c virtio/test: fix up after IOTLB changes 2020-04-16 18:31:08 -04:00
vsock.c vsock/virtio: fix multiple packet delivery to monitoring devices 2020-04-27 10:18:01 -07:00