tree b580949c128cf16e351cdec1674c89cd0afb5c5e
parent 43da5f2e0d0c69ded3d51907d9552310a6b545e8
author Jason Wang <jasowang@redhat.com> 1345063467 +0000
committer David S. Miller <davem@davemloft.net> 1345154084 -0700

act_mirred: do not drop packets when fails to mirror it

We drop packet unconditionally when we fail to mirror it. This is not intended
in some cases. Consdier for kvm guest, we may mirror the traffic of the bridge
to a tap device used by a VM. When kernel fails to mirror the packet in
conditions such as when qemu crashes or stop polling the tap, it's hard for the
management software to detect such condition and clean the the mirroring
before. This would lead all packets to the bridge to be dropped and break the
netowrk of other virtual machines.

To solve the issue, the patch does not drop packets when kernel fails to mirror
it, and only drop the redirected packets.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>