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xen-netback: make feature-rx-notify mandatory

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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>
This commit is contained in:
David Vrabel
2014-10-22 14:08:53 +01:00
committed by David S. Miller
parent 5345c1d417
commit bc96f648df
3 changed files with 5 additions and 25 deletions
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5
drivers/net/xen-netback/common.h
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@@ -228,9 +228,6 @@ struct xenvif {
u8 ip_csum:1;
u8 ipv6_csum:1;
/* Internal feature information. */
u8 can_queue:1; /* can queue packets for receiver? */
/* Is this interface disabled? True when backend discovers
* frontend is rogue.
*/
@@ -272,8 +269,6 @@ void xenvif_xenbus_fini(void);
int xenvif_schedulable(struct xenvif *vif);
int xenvif_must_stop_queue(struct xenvif_queue *queue);
int xenvif_queue_stopped(struct xenvif_queue *queue);
void xenvif_wake_queue(struct xenvif_queue *queue);