[Bridge] [PATCH 1/4] veth: move loopback logic to common location
Patrick McHardy
kaber at trash.net
Tue Nov 24 01:51:19 PST 2009
Arnd Bergmann wrote:
> +int dev_forward_skb(struct net_device *dev, struct sk_buff *skb)
> +{
> + skb_orphan(skb);
> +
> + if (!(dev->flags & IFF_UP))
> + return NET_RX_DROP;
> +
> + if (skb->len > (dev->mtu + dev->hard_header_len))
> + return NET_RX_DROP;
> +
> + skb_dst_drop(skb);
> + skb->tstamp.tv64 = 0;
> + skb->pkt_type = PACKET_HOST;
> + skb->protocol = eth_type_trans(skb, dev);
> + skb->mark = 0;
skb->mark clearing should stay private to veth since its usually
supposed to stay intact. The only exception is packets crossing
namespaces, where they should appear like a freshly received skbs.
> + secpath_reset(skb);
> + nf_reset(skb);
> + return netif_rx(skb);
> +}
> +EXPORT_SYMBOL_GPL(dev_forward_skb);
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