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linux/net/ipv4
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David Wragg 7e059158d5 vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices 
Prior to 4.3, openvswitch tunnel vports (vxlan, gre and geneve) could
transmit vxlan packets of any size, constrained only by the ability to
send out the resulting packets.  4.3 introduced netdevs corresponding
to tunnel vports.  These netdevs have an MTU, which limits the size of
a packet that can be successfully encapsulated.  The default MTU
values are low (1500 or less), which is awkwardly small in the context
of physical networks supporting jumbo frames, and leads to a
conspicuous change in behaviour for userspace.

Instead, set the MTU on openvswitch-created netdevs to be the relevant
maximum (i.e. the maximum IP packet size minus any relevant overhead),
effectively restoring the behaviour prior to 4.3.

Signed-off-by: David Wragg <david@weave.works>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-10 05:50:03 -05:00
..
netfilter inet: frag: Always orphan skbs inside ip_defrag() 2016-01-28 16:00:46 -08:00
af_inet.c net: add validation for the socket syscall protocol argument 2015-12-14 16:09:30 -05:00
ah4.c
arp.c
cipso_ipv4.c
datagram.c
devinet.c
esp4.c
fib_frontend.c net: Flush local routes when device changes vrf association 2015-12-13 23:58:44 -05:00
fib_lookup.h
fib_rules.c
fib_semantics.c
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 udp: restrict offloads to one namespace 2016-01-10 17:28:24 -05:00
gre_demux.c
gre_offload.c
icmp.c
igmp.c ipv4: igmp: Allow removing groups from a removed interface 2015-12-03 12:07:05 -05:00
inet_connection_sock.c
inet_diag.c net: diag: support v4mapped sockets in inet_diag_find_one_icsk() 2016-01-20 18:51:31 -08:00
inet_fragment.c inet: kill unused skb_free op 2016-01-05 22:25:57 -05:00
inet_hashtables.c
inet_lro.c
inet_timewait_sock.c
inetpeer.c
ip_forward.c
ip_fragment.c inet: frag: Always orphan skbs inside ip_defrag() 2016-01-28 16:00:46 -08:00
ip_gre.c vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices 2016-02-10 05:50:03 -05:00
ip_input.c ipv4: early demux should be aware of fragments 2016-01-29 15:14:20 -05:00
ip_options.c
ip_output.c net: preserve IP control block during GSO segmentation 2016-01-15 14:35:24 -05:00
ip_sockglue.c
ip_tunnel_core.c ipv4: fix endianness warnings in ip_tunnel_core.c 2016-01-08 21:30:43 -05:00
ip_tunnel.c vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices 2016-02-10 05:50:03 -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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-31 18:20:10 -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+ipv6: Make INET*_ESP select CRYPTO_ECHAINIV 2016-01-25 10:45:41 -08:00
Makefile net: drop tcp_memcontrol.c 2016-01-20 17:09:18 -08:00
netfilter.c
ping.c ipv4: eliminate lock count warnings in ping.c 2016-01-08 21:30:43 -05:00
proc.c
protocol.c
raw.c net: Propagate lookup failure in l3mdev_get_saddr to caller 2016-01-04 22:58:30 -05:00
route.c
syncookies.c net: Allow accepted sockets to be bound to l3mdev domain 2015-12-18 14:43:38 -05:00
sysctl_net_ipv4.c net: drop tcp_memcontrol.c 2016-01-20 17:09:18 -08:00
tcp_bic.c
tcp_cdg.c
tcp_cong.c
tcp_cubic.c
tcp_dctcp.c
tcp_diag.c net: diag: Support destroying TCP sockets. 2015-12-15 23:26:52 -05:00
tcp_fastopen.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c tcp: avoid cwnd undo after receiving ECN 2016-01-29 23:03:56 -08:00
tcp_ipv4.c tcp: do not drop syn_recv on all icmp reports 2016-02-09 04:15:37 -05:00
tcp_lp.c
tcp_metrics.c
tcp_minisocks.c tcp: honour SO_BINDTODEVICE for TW_RST case too 2015-12-22 17:03:05 -05:00
tcp_offload.c
tcp_output.c net: tcp_memcontrol: simplify linkage between socket and page counter 2016-01-14 16:00:49 -08:00
tcp_probe.c
tcp_recovery.c
tcp_scalable.c
tcp_timer.c ipv4: Namespecify the tcp_keepalive_intvl sysctl knob 2016-01-10 17:32:09 -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 net:Add sysctl_max_skb_frags 2016-02-09 04:28:06 -05:00
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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-01-11 23:55:43 -05:00
udp_tunnel.c ip_tunnel: Move stats update to iptunnel_xmit() 2015-12-25 23:32:23 -05:00
udp.c udp: fix potential infinite loop in SO_REUSEPORT logic 2016-01-19 13:52:25 -05:00
udplite.c
xfrm4_input.c
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c
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