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linux/net/ipv4
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Alexander Duyck a0ca153f98 GRE: Disable segmentation offloads w/ CSUM and we are encapsulated via FOU 
This patch fixes an issue I found in which we were dropping frames if we
had enabled checksums on GRE headers that were encapsulated by either FOU
or GUE.  Without this patch I was barely able to get 1 Gb/s of throughput.
With this patch applied I am now at least getting around 6 Gb/s.

The issue is due to the fact that with FOU or GUE applied we do not provide
a transport offset pointing to the GRE header, nor do we offload it in
software as the GRE header is completely skipped by GSO and treated like a
VXLAN or GENEVE type header.  As such we need to prevent the stack from
generating it and also prevent GRE from generating it via any interface we
create.

Fixes: c3483384ee ("gro: Allow tunnel stacking in the case of FOU/GUE")
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-07 16:56:33 -04:00
..
netfilter netfilter: ipv4: fix NULL dereference 2016-03-28 17:59:29 +02:00
af_inet.c net: ipv4: Fix truncated timestamp returned by inet_current_timestamp() 2016-03-21 22:56:38 -04:00
ah4.c ah4: Fix error return in ah_input(). 2015-08-25 13:38:50 -07:00
arp.c arp: correct return value of arp_rcv 2016-03-07 14:55:04 -05:00
cipso_ipv4.c
datagram.c
devinet.c ipv4: Don't do expensive useless work during inetdev destroy. 2016-03-13 23:28:35 -04:00
esp4.c
fib_frontend.c ipv4: initialize flowi4_flags before calling fib_lookup() 2016-03-22 15:59:23 -04:00
fib_lookup.h
fib_rules.c net: ipv6: use common fib_default_rule_pref 2015-09-09 14:19:50 -07:00
fib_semantics.c net: Fix prefsrc lookups 2015-11-04 21:34:37 -05:00
fib_trie.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-01 15:56:08 -08:00
fou.c GRE: Disable segmentation offloads w/ CSUM and we are encapsulated via FOU 2016-04-07 16:56:33 -04:00
gre_demux.c gre: Remove support for sharing GRE protocol hook. 2015-08-10 14:03:54 -07:00
gre_offload.c GRE: Disable segmentation offloads w/ CSUM and we are encapsulated via FOU 2016-04-07 16:56:33 -04:00
icmp.c net: ipv4: Convert IP network timestamps to be y2038 safe 2016-03-01 17:18:44 -05:00
igmp.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
inet_connection_sock.c soreuseport: fix merge conflict in tcp bind 2016-02-24 13:38:18 -05:00
inet_diag.c net: diag: add a scheduling point in inet_diag_dump_icsk() 2016-03-14 19:38:09 -04:00
inet_fragment.c inet: kill unused skb_free op 2016-01-05 22:25:57 -05:00
inet_hashtables.c tcp/dccp: better use of ephemeral ports in connect() 2016-02-12 05:28:32 -05:00
inet_timewait_sock.c tcp/dccp: fix timewait races in timer handling 2015-09-21 16:32:29 -07:00
inetpeer.c net: Add helper function to compare inetpeer addresses 2015-08-28 13:32:36 -07:00
ip_forward.c net: remove skb_sender_cpu_clear() 2016-03-01 17:36:47 -05:00
ip_fragment.c net: Export ip fragment sysctl to unprivileged users 2016-02-16 20:42:54 -05:00
ip_gre.c GRE: Disable segmentation offloads w/ CSUM and we are encapsulated via FOU 2016-04-07 16:56:33 -04:00
ip_input.c ipv4: namespacify ip_early_demux sysctl knob 2016-02-16 20:42:54 -05:00
ip_options.c net: ipv4: Convert IP network timestamps to be y2038 safe 2016-03-01 17:18:44 -05:00
ip_output.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
ip_sockglue.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-23 00:09:14 -05:00
ip_tunnel_core.c Fix returned tc and hoplimit values for route with IPv6 encapsulation 2016-03-27 22:35:02 -04:00
ip_tunnel.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
ip_vti.c ip_tunnel: Move stats update to iptunnel_xmit() 2015-12-25 23:32:23 -05:00
ipcomp.c
ipconfig.c ipv4: ipconfig: avoid unused ic_proto_used symbol 2016-01-29 19:39:09 -08:00
ipip.c iptunnel: scrub packet in iptunnel_pull_header 2016-02-18 14:34:54 -05:00
ipmr.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 21:09:12 -05:00
Kconfig ipv4: Remove inet_lro library 2016-02-17 16:15:46 -05:00
Makefile ipv4: Remove inet_lro library 2016-02-17 16:15:46 -05:00
netfilter.c ipv4: Pass struct net into ip_route_me_harder 2015-09-29 20:21:32 +02:00
ping.c net/ipv4: remove left over dead code 2016-03-02 15:00:55 -05:00
proc.c ipv4: Namespaceify ip_default_ttl sysctl knob 2016-02-16 20:42:54 -05:00
protocol.c
raw.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-23 00:09:14 -05:00
route.c route: check and remove route cache when we get route 2016-02-18 11:31:36 -05:00
syncookies.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
sysctl_net_ipv4.c ipv4: namespacify ip_early_demux sysctl knob 2016-02-16 20:42:54 -05:00
tcp_bic.c
tcp_cdg.c
tcp_cong.c tcp: remove tcp_ecn_make_synack() socket argument 2015-09-25 13:00:38 -07:00
tcp_cubic.c tcp_cubic: do not set epoch_start in the future 2015-09-17 22:35:07 -07:00
tcp_dctcp.c tcp: allow dctcp alpha to drop to zero 2015-10-23 02:46:52 -07:00
tcp_diag.c net: diag: Support destroying TCP sockets. 2015-12-15 23:26:52 -05:00
tcp_fastopen.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-23 00:09:14 -05:00
tcp_ipv4.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
tcp_lp.c
tcp_metrics.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
tcp_minisocks.c tcp: Add RFC4898 tcpEStatsPerfDataSegsOut/In 2016-03-14 14:55:26 -04:00
tcp_offload.c net: Store checksum result for offloaded GSO checksums 2016-02-11 08:55:33 -05:00
tcp_output.c tcp: Add RFC4898 tcpEStatsPerfDataSegsOut/In 2016-03-14 14:55:26 -04:00
tcp_probe.c net: ipv4: tcp_probe: Replace timespec with timespec64 2016-03-01 17:18:44 -05:00
tcp_recovery.c tcp: use RACK to detect losses 2015-10-21 07:00:53 -07:00
tcp_scalable.c
tcp_timer.c ipv4: Namespaceify tcp_orphan_retries sysctl knob 2016-02-07 14:35:11 -05:00
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c tcp_yeah: don't set ssthresh below 2 2016-01-11 17:25:16 -05:00
tcp.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
tunnel4.c
udp_diag.c soreuseport: setsockopt SO_ATTACH_REUSEPORT_[CE]BPF 2016-01-04 22:49:59 -05:00
udp_impl.h
udp_offload.c net: Reset encap_level to avoid resetting features on inner IP headers 2016-03-23 14:19:08 -04:00
udp_tunnel.c tunnel: Clear IPCB(skb)->opt before dst_link_failure called 2016-02-23 19:11:56 -05:00
udp.c ipv4: fix broadcast packets reception 2016-03-22 15:53:50 -04:00
udplite.c
xfrm4_input.c netfilter: Pass net into okfn 2015-09-17 17:18:37 -07:00
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-10-24 06:54:12 -07:00
xfrm4_policy.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2015-12-22 16:26:31 -05:00
xfrm4_protocol.c
xfrm4_state.c
xfrm4_tunnel.c