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authorDamjan Marion <damarion@cisco.com>2016-10-13 10:02:19 +0200
committerOle Trøan <otroan@employees.org>2016-10-13 10:45:13 +0000
commit10eb1ea468496807432734814f264139fe3299dc (patch)
tree34d267377646e3de1f5744337d3b3ffce3e36a0d
parent7e46a4dc841f635e45b8e8739338de407621667d (diff)
vhost-user: Add reconnect support
QEMU 2.7 introduces reconnect support. However it doesn't send last state of last_avail_idx in the SET_VRING_BASE. With this patch we are overriding SET_VRING_BASE with value taken from used->idx. It is a bit hackish as it basically overrides SET_VRING_BASE provided value but it should work in most of the cases. This is what author of reconnect code is also suggesting in his post: https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg01495.html Change-Id: I10e5f401c409d2989bf6c43eaea377800a9c76df Signed-off-by: Damjan Marion <damarion@cisco.com>
-rw-r--r--vnet/vnet/devices/virtio/vhost-user.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/vnet/vnet/devices/virtio/vhost-user.c b/vnet/vnet/devices/virtio/vhost-user.c
index 9b0db749ee9..a3dacd13b42 100644
--- a/vnet/vnet/devices/virtio/vhost-user.c
+++ b/vnet/vnet/devices/virtio/vhost-user.c
@@ -588,6 +588,7 @@ vhost_user_socket_read (unix_file_t * uf)
}
vui->vrings[msg.state.index].last_used_idx =
+ vui->vrings[msg.state.index].last_avail_idx =
vui->vrings[msg.state.index].used->idx;
/* tell driver that we don't want interrupts */