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Herbert Xu 35fc92a9de [NET]: Allow forwarding of ip_summed except CHECKSUM_COMPLETE 
Right now Xen has a horrible hack that lets it forward packets with
partial checksums.  One of the reasons that CHECKSUM_PARTIAL and
CHECKSUM_COMPLETE were added is so that we can get rid of this hack
(where it creates two extra bits in the skbuff to essentially mirror
ip_summed without being destroyed by the forwarding code).

I had forgotten that I've already gone through all the deivce drivers
last time around to make sure that they're looking at ip_summed ==
CHECKSUM_PARTIAL rather than ip_summed != 0 on transmit.  In any case,
I've now done that again so it should definitely be safe.

Unfortunately nobody has yet added any code to update CHECKSUM_COMPLETE
values on forward so we I'm setting that to CHECKSUM_NONE.  This should
be safe to remove for bridging but I'd like to check that code path
first.

So here is the patch that lets us get rid of the hack by preserving
ip_summed (mostly) on forwarded packets.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2007-04-25 22:28:16 -07:00
..
netfilter [NETFILTER]: Use setup_timer 2007-04-25 22:27:43 -07:00
Kconfig [IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support. 2007-04-25 22:23:43 -07:00
Makefile [IPV6]: Decentralize EXPORT_SYMBOLs. 2007-04-25 22:23:36 -07:00
addrconf.c [IPv6]: Use rtnl registration interface 2007-04-25 22:27:13 -07:00
addrconf_core.c [IPV6]: Fix __ipv6_addr_type() export in correct place. 2007-02-26 11:42:57 -08:00
af_inet6.c [INET]: Use jhash + random secret for ehash. 2007-04-25 22:28:06 -07:00
ah6.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
anycast.c [IPV6]: /proc/net/anycast6 unbalanced inet6_dev refcnt 2007-02-28 09:42:10 -08:00
datagram.c [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
esp6.c [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
exthdrs.c [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
exthdrs_core.c [NET] IPV6: Fix whitespace errors. 2007-02-10 23:19:42 -08:00
fib6_rules.c [NET] rules: Unified rules dumping 2007-04-25 22:27:17 -07:00
icmp.c [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
inet6_connection_sock.c [TCP]: Restore SKB socket owner setting in tcp_transmit_skb(). 2007-01-26 01:04:55 -08:00
inet6_hashtables.c [IPV6] HASHTABLES: Use appropriate seed for caluculating ehash index. 2007-02-12 20:26:39 -08:00
ip6_fib.c [IPv6]: Use rtnl registration interface 2007-04-25 22:27:13 -07:00
ip6_flowlabel.c [PATCH] mark struct file_operations const 7 2007-02-12 09:48:46 -08:00
ip6_input.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
ip6_output.c [NET]: Allow forwarding of ip_summed except CHECKSUM_COMPLETE 2007-04-25 22:28:16 -07:00
ip6_tunnel.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
ipcomp6.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
ipv6_sockglue.c [SK_BUFF]: Introduce skb_reset_transport_header(skb) 2007-04-25 22:25:15 -07:00
mcast.c [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
mip6.c [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
ndisc.c [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
netfilter.c [SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h 2007-04-25 22:25:14 -07:00
proc.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
protocol.c [IPV6]: Decentralize EXPORT_SYMBOLs. 2007-04-25 22:23:36 -07:00
raw.c [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
reassembly.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
route.c [IPv6]: Use rtnl registration interface 2007-04-25 22:27:13 -07:00
sit.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
sysctl_net_ipv6.c [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
tcp_ipv6.c [SK_BUFF]: Introduce tcp_hdr(), remove skb->h.th 2007-04-25 22:25:26 -07:00
tunnel6.c [IPSEC]: changing API of xfrm6_tunnel_register 2007-02-13 12:55:55 -08:00
udp.c [SK_BUFF]: Introduce udp_hdr(), remove skb->h.uh 2007-04-25 22:25:22 -07:00
udp_impl.h [NET] IPV6: Fix whitespace errors. 2007-02-10 23:19:42 -08:00
udplite.c [UDP]: Clean up UDP-Lite receive checksum 2007-04-25 22:23:51 -07:00
xfrm6_input.c [SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h 2007-04-25 22:25:14 -07:00
xfrm6_mode_beet.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
xfrm6_mode_ro.c [SK_BUFF]: Some more layer header conversions 2007-04-25 22:26:03 -07:00
xfrm6_mode_transport.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
xfrm6_mode_tunnel.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
xfrm6_output.c [SK_BUFF]: Introduce skb_reset_network_header(skb) 2007-04-25 22:24:46 -07:00
xfrm6_policy.c [SK_BUFF]: Introduce skb_network_header_len 2007-04-25 22:26:19 -07:00
xfrm6_state.c [NET] IPV6: Fix whitespace errors. 2007-02-10 23:19:42 -08:00
xfrm6_tunnel.c [SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h 2007-04-25 22:25:14 -07:00