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6869c4d8e0
As discussed at netconf'05, we're trying to save every bit in sk_buff. The patch below makes sk_buff 8 bytes smaller. I did some basic testing on my notebook and it seems to work. The only real in-tree user of nfcache was IPVS, who only needs a single bit. Unfortunately I couldn't find some other free bit in sk_buff to stuff that bit into, so I introduced a separate field for them. Maybe the IPVS guys can resolve that to further save space. Initially I wanted to shrink pkt_type to three bits (PACKET_HOST and alike are only 6 values defined), but unfortunately the bluetooth code overloads pkt_type :( The conntrack-event-api (out-of-tree) uses nfcache, but Rusty just came up with a way how to do it without any skb fields, so it's safe to remove it. - remove all never-implemented 'nfcache' code - don't have ipvs code abuse 'nfcache' field. currently get's their own compile-conditional skb->ipvs_property field. IPVS maintainers can decide to move this bit elswhere, but nfcache needs to die. - remove skb->nfcache field to save 4 bytes - move skb->nfctinfo into three unused bits to save further 4 bytes Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| netfilter | ||
| addrconf.c | ||
| af_inet6.c | ||
| ah6.c | ||
| anycast.c | ||
| datagram.c | ||
| esp6.c | ||
| exthdrs_core.c | ||
| exthdrs.c | ||
| icmp.c | ||
| ip6_fib.c | ||
| ip6_flowlabel.c | ||
| ip6_input.c | ||
| ip6_output.c | ||
| ip6_tunnel.c | ||
| ipcomp6.c | ||
| ipv6_sockglue.c | ||
| ipv6_syms.c | ||
| Kconfig | ||
| Makefile | ||
| mcast.c | ||
| ndisc.c | ||
| proc.c | ||
| protocol.c | ||
| raw.c | ||
| reassembly.c | ||
| route.c | ||
| sit.c | ||
| sysctl_net_ipv6.c | ||
| tcp_ipv6.c | ||
| udp.c | ||
| xfrm6_input.c | ||
| xfrm6_output.c | ||
| xfrm6_policy.c | ||
| xfrm6_state.c | ||
| xfrm6_tunnel.c | ||