xen-netfront: Rework the fix for Rx stall during OOM and network stress
authorVineeth Remanan Pillai <vineethp@amazon.com>
Tue, 7 Feb 2017 18:59:01 +0000 (18:59 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 9 Feb 2017 21:34:05 +0000 (16:34 -0500)
commit538d92912d3190a1dd809233a0d57277459f37b2
tree3a0ff3c7ae5e688124425606039b8ae960e5d5de
parent6d9f66ac7fec2a6ccd649e5909806dfe36f1fc25
xen-netfront: Rework the fix for Rx stall during OOM and network stress

The commit 90c311b0eeea ("xen-netfront: Fix Rx stall during network
stress and OOM") caused the refill timer to be triggerred almost on
all invocations of xennet_alloc_rx_buffers for certain workloads.
This reworks the fix by reverting to the old behaviour and taking into
consideration the skb allocation failure. Refill timer is now triggered
on insufficient requests or skb allocation failure.

Signed-off-by: Vineeth Remanan Pillai <vineethp@amazon.com>
Fixes: 90c311b0eeea (xen-netfront: Fix Rx stall during network stress and OOM)
Reported-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/xen-netfront.c