On Wednesday 24 December 2003 18:12, Rajashekhar Mansanpally wrote: > #ifdef CONFIG_NETFILTER > if (skb->nf_bridge) > memcpy(skb->data - 16, > skb->nf_bridge->hh, 16); > #endif > > 1. What is 16 bytes here...? Ethernet hdr is just 14 > bytes A memcpy of 16 bytes is faster. > 2. Why the ethernet hdr is being overwritten with > nf_bridge->hh? what is there in nf_bridge->hh? This is needed for refragmented UDP packets. > when is nf_bridge is actually assigned this content. See br_netfilter.c. cheers, Bart
