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linux/net/ipv4
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Eric Dumazet 21d1196a35 ipv4: set transport header earlier 
commit 45f00f99d6 ("ipv4: tcp: clean up tcp_v4_early_demux()") added a
performance regression for non GRO traffic, basically disabling
IP early demux.

IPv6 stack resets transport header in ip6_rcv() before calling
IP early demux in ip6_rcv_finish(), while IPv4 does this only in
ip_local_deliver_finish(), _after_ IP early demux.

GRO traffic happened to enable IP early demux because transport header
is also set in inet_gro_receive()

Instead of reverting the faulty commit, we can make IPv4/IPv6 behave the
same : transport_header should be set in ip_rcv() instead of
ip_local_deliver_finish()

ip_local_deliver_finish() can also use skb_network_header_len() which is
faster than ip_hdrlen()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-16 12:59:28 -07:00
..
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-07-03 14:55:13 -07:00
af_inet.c gro: remove a sparse error 2013-06-12 15:03:24 -07:00
ah4.c ipv4: properly refresh rtable entries on pmtu/redirect events 2013-06-03 00:07:42 -07:00
arp.c arp: flush arp cache on IFF_NOARP change 2013-05-28 13:11:02 -07:00
cipso_ipv4.c
datagram.c
devinet.c net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00
esp4.c ipv4: properly refresh rtable entries on pmtu/redirect events 2013-06-03 00:07:42 -07:00
fib_frontend.c netlink: fix splat in skb_clone with large messages 2013-06-27 22:44:16 -07:00
fib_lookup.h
fib_rules.c
fib_semantics.c ipv4: use next hop exceptions also for input routes 2013-06-28 21:27:47 -07:00
fib_trie.c fib_trie: no need to delay vfree() 2013-05-06 11:06:51 -04:00
gre_demux.c net: gre: move GSO functions to gre_offload 2013-07-03 14:37:39 -07:00
gre_offload.c gso: Update tunnel segmentation to support Tx checksum offload 2013-07-11 12:18:49 -07:00
icmp.c icmp: avoid allocating large struct on stack 2013-06-03 00:28:44 -07:00
igmp.c igmp: fix new sparse errors 2013-06-12 14:14:55 -07:00
inet_connection_sock.c
inet_diag.c netlink: rename ssk to sk in struct netlink_skb_params 2013-04-19 14:57:56 -04:00
inet_fragment.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-07-09 18:24:39 -07:00
inet_hashtables.c inet: fix spacing in assignment 2013-07-11 12:02:39 -07:00
inet_lro.c
inet_timewait_sock.c
inetpeer.c
ip_forward.c
ip_fragment.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
ip_gre.c gre: fix a regression in ioctl 2013-07-01 23:35:22 -07:00
ip_input.c ipv4: set transport header earlier 2013-07-16 12:59:28 -07:00
ip_options.c
ip_output.c ipv4: ip_output: remove inline marking of EXPORT_SYMBOL functions 2013-05-11 16:12:44 -07:00
ip_sockglue.c
ip_tunnel_core.c ip_tunnel: push generic protocol handling to ip_tunnel module. 2013-06-19 18:07:41 -07:00
ip_tunnel.c gre: Fix MTU sizing check for gretap tunnels 2013-07-11 16:12:03 -07:00
ip_vti.c vti: remove duplicated code to fix a memory leak 2013-07-01 23:37:14 -07:00
ipcomp.c ipv4: properly refresh rtable entries on pmtu/redirect events 2013-06-03 00:07:42 -07:00
ipconfig.c
ipip.c ipip: fix a regression in ioctl 2013-07-02 01:13:09 -07:00
ipmr.c net: remove last caller of skb_tail_offset() and itself 2013-06-10 22:22:23 -07:00
Kconfig Kconfig: remove dangling references to the deleted file 2013-06-04 15:17:39 -07:00
Makefile net: gre: move GSO functions to gre_offload 2013-07-03 14:37:39 -07:00
netfilter.c
ping.c net: ping_check_bind_addr() etc. can be static 2013-06-13 01:36:41 -07:00
proc.c net: add low latency socket poll 2013-06-10 21:22:35 -07:00
protocol.c
raw.c
route.c ipv4: use next hop exceptions also for input routes 2013-06-28 21:27:47 -07:00
syncookies.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
sysctl_net_ipv4.c net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00
tcp_bic.c
tcp_cong.c
tcp_cubic.c
tcp_diag.c
tcp_fastopen.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c tcp: introduce a per-route knob for quick ack 2013-06-19 23:06:51 -07:00
tcp_ipv4.c net: rename ll methods to busy-poll 2013-07-10 17:08:27 -07:00
tcp_lp.c
tcp_memcontrol.c
tcp_metrics.c tcp: do not expire TCP fastopen cookies 2013-05-05 16:58:02 -04:00
tcp_minisocks.c tcp: md5: remove spinlock usage in fast path 2013-05-20 14:00:42 -07:00
tcp_offload.c net: tcp: move GRO/GSO functions to tcp_offload 2013-06-07 14:39:05 -07:00
tcp_output.c tcp: account all retransmit failures 2013-07-12 16:15:56 -07:00
tcp_probe.c
tcp_scalable.c
tcp_timer.c
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tcp.c net: rename include/net/ll_poll.h to include/net/busy_poll.h 2013-07-10 17:08:27 -07:00
tunnel4.c
udp_diag.c netlink: rename ssk to sk in struct netlink_skb_params 2013-04-19 14:57:56 -04:00
udp_impl.h
udp_offload.c net: udp4: move GSO functions to udp_offload 2013-06-12 00:47:25 -07:00
udp.c gso: Update tunnel segmentation to support Tx checksum offload 2013-07-11 12:18:49 -07:00
udplite.c
xfrm4_input.c
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c
xfrm4_policy.c
xfrm4_state.c
xfrm4_tunnel.c sit: add IPv4 over IPv4 support 2013-05-31 17:19:05 -07:00