net: don't reforward packets already forwarded by offload device
Just before queuing skb for xmit on port, check if skb has been marked by switchdev port driver as already fordwarded by device. If so, drop skb. A non-zero skb->offload_fwd_mark field is set by the switchdev port driver/device on ingress to indicate the skb has already been forwarded by the device to egress ports with matching dev->skb_mark. The switchdev port driver would assign a non-zero dev->offload_skb_mark for each device port netdev during registration, for example. Signed-off-by: NScott Feldman <sfeldma@gmail.com> Acked-by: NJiri Pirko <jiri@resnulli.us> Acked-by: NRoopa Prabhu <roopa@cumulusnetworks.com> Acked-by: NNicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Showing
想要评论请 注册 或 登录