xen-netback: make feature-rx-notify mandatory
authorDavid Vrabel <david.vrabel@citrix.com>
Wed, 22 Oct 2014 13:08:53 +0000 (14:08 +0100)
committerDavid S. Miller <davem@davemloft.net>
Sat, 25 Oct 2014 18:15:20 +0000 (14:15 -0400)
commitbc96f648df1bbc2729abbb84513cf4f64273a1f1
treead8044147004ba38641bc727bf3b0f866c2e05ac
parent5345c1d417c1b0caf46fd2766d16bb4357a347d8
xen-netback: make feature-rx-notify mandatory

Frontends that do not provide feature-rx-notify may stall because
netback depends on the notification from frontend to wake the guest Rx
thread (even if can_queue is false).

This could be fixed but feature-rx-notify was introduced in 2006 and I
am not aware of any frontends that do not implement this.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/xen-netback/common.h
drivers/net/xen-netback/interface.c
drivers/net/xen-netback/xenbus.c