Patrick McHardy 5f2d04f1f9 ipv4: fix path MTU discovery with connection tracking ...

IPv4 conntrack defragments incoming packet at the PRE_ROUTING hook and
(in case of forwarded packets) refragments them at POST_ROUTING
independent of the IP_DF flag. Refragmentation uses the dst_mtu() of
the local route without caring about the original fragment sizes,
thereby breaking PMTUD.

This patch fixes this by keeping track of the largest received fragment
with IP_DF set and generates an ICMP fragmentation required error during
refragmentation if that size exceeds the MTU.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: David S. Miller <davem@davemloft.net>

2012-08-26 19:13:55 +02:00

..

netfilter

Merge git://1984.lsi.us.es/nf-next

2012-08-22 18:48:52 -07:00

af_inet.c

net: tcp: GRO should be ECN friendly

2012-08-06 13:40:47 -07:00

ah4.c

ipv4: Add redirect support to all protocol icmp error handlers.

2012-07-11 21:27:49 -07:00

arp.c

ipv4: Fix input route performance regression.

2012-07-26 15:50:39 -07:00

cipso_ipv4.c

cipso: don't follow a NULL pointer when setsockopt() is called

2012-07-18 09:01:12 -07:00

datagram.c

ipv4: Lock socket and use cork flow in ip4_datagram_connect().

2011-05-08 13:48:57 -07:00

devinet.c

net: remove delay at device dismantle

2012-08-22 21:50:36 -07:00

esp4.c

ipv4: Add redirect support to all protocol icmp error handlers.

2012-07-11 21:27:49 -07:00

fib_frontend.c

net: remove delay at device dismantle

2012-08-22 21:50:36 -07:00

fib_lookup.h

ipv4: Fix nexthop caching wrt. scoping.

2011-03-24 18:06:47 -07:00

fib_rules.c

ipv4: Don't store a rule pointer in fib_result.

2012-07-13 08:21:29 -07:00

fib_semantics.c

ipv4: Cache routes in nexthop exception entries.

2012-07-31 15:02:02 -07:00

fib_trie.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2012-08-22 14:21:38 -07:00

gre.c

net: ipv4: Standardize prefixes for message logging

2012-03-12 17:05:21 -07:00

icmp.c

ipv4: Prepare for change of rt->rt_iif encoding.

2012-07-23 16:36:26 -07:00

igmp.c

time: jiffies_delta_to_clock_t() helper to the rescue

2012-08-09 16:17:03 -07:00

inet_connection_sock.c

ipv4: Use newinet->inet_opt in inet_csk_route_child_sock()

2012-08-21 14:49:11 -07:00

inet_diag.c

net: make sock diag per-namespace

2012-07-16 22:31:34 -07:00

inet_fragment.c

inetpeer: add parameter net for inet_getpeer_v4,v6

2012-06-08 14:27:23 -07:00

inet_hashtables.c

ipv4: fix checkpatch errors

2012-04-15 12:37:19 -04:00

inet_lro.c

net: add skb frag size accessors

2011-10-19 03:10:46 -04:00

inet_timewait_sock.c

net: ipv4 and ipv6: Convert printk(KERN_DEBUG to pr_debug

2012-05-16 01:01:03 -04:00

inetpeer.c

ipv4: Maintain redirect and PMTU info in struct rtable again.

2012-07-10 22:40:14 -07:00

ip_forward.c

snmp: fix OutOctets counter to include forwarded datagrams

2012-06-07 14:50:56 -07:00

ip_fragment.c

ipv4: fix path MTU discovery with connection tracking

2012-08-26 19:13:55 +02:00

ip_gre.c

ipv4: Adjust semantics of rt->rt_gateway.

2012-07-20 13:31:20 -07:00

ip_input.c

net: TCP early demux cleanup

2012-07-30 14:53:21 -07:00

ip_options.c

ipv4: optimize fib_compute_spec_dst call in ip_options_echo

2012-07-19 08:30:49 -07:00

ip_output.c

ipv4: fix path MTU discovery with connection tracking

2012-08-26 19:13:55 +02:00

ip_sockglue.c

ipv4: Prepare for change of rt->rt_iif encoding.

2012-07-23 16:36:26 -07:00

ip_vti.c

net/ipv4/ip_vti.c: Fix __rcu warnings detected by sparse.

2012-07-23 13:00:54 -07:00

ipcomp.c

ipv4: Add redirect support to all protocol icmp error handlers.

2012-07-11 21:27:49 -07:00

ipconfig.c

net/ipv4/ipconfig: neaten __setup placement

2012-05-20 04:06:16 -04:00

ipip.c

ipv4: Adjust semantics of rt->rt_gateway.

2012-07-20 13:31:20 -07:00

ipmr.c

net: Loopback ifindex is constant now

2012-08-09 16:18:07 -07:00

Kconfig

net/ipv4: VTI support new module for ip_vti.

2012-07-18 09:36:12 -07:00

Makefile

memcg: rename config variables

2012-07-31 18:42:43 -07:00

netfilter.c

net: Delete all remaining instances of ctl_path

2012-04-20 21:22:30 -04:00

ping.c

ipv4: Add redirect support to all protocol icmp error handlers.

2012-07-11 21:27:49 -07:00

proc.c

net-tcp: Fast Open client - sending SYN-data

2012-07-19 11:02:03 -07:00

protocol.c

inet: Sanitize inet{,6} protocol demux.

2012-06-19 18:56:21 -07:00

raw.c

ipv4: Add redirect support to all protocol icmp error handlers.

2012-07-11 21:27:49 -07:00

route.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2012-08-22 14:21:38 -07:00

syncookies.c

net-tcp: Fast Open base

2012-07-19 10:55:36 -07:00

sysctl_net_ipv4.c

Merge branch 'akpm' (Andrew's patch-bomb)

2012-07-31 19:25:39 -07:00

tcp_bic.c

tcp: fix undo after RTO for BIC

2012-01-20 14:17:26 -05:00

tcp_cong.c

tcp: Apply device TSO segment limit earlier

2012-08-02 00:19:17 -07:00

tcp_cubic.c

tcp: fix undo after RTO for CUBIC

2012-01-20 14:17:26 -05:00

tcp_diag.c

inet_diag: Rename inet_diag_req into inet_diag_req_v2

2012-01-11 12:56:06 -08:00

tcp_fastopen.c

net-tcp: Fast Open base

2012-07-19 10:55:36 -07:00

tcp_highspeed.c

tcp: mark tcp_congestion_ops read_mostly

2011-03-10 00:40:17 -08:00

tcp_htcp.c

tcp: mark tcp_congestion_ops read_mostly

2011-03-10 00:40:17 -08:00

tcp_hybla.c

tcp: bool conversions

2012-05-17 14:59:59 -04:00

tcp_illinois.c

tcp: mark tcp_congestion_ops read_mostly

2011-03-10 00:40:17 -08:00

tcp_input.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2012-08-22 14:21:38 -07:00

tcp_ipv4.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2012-08-22 14:21:38 -07:00

tcp_lp.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

tcp_memcontrol.c

memcg: decrement static keys at real destroy time

2012-05-29 16:22:28 -07:00

tcp_metrics.c

tcp: must free metrics at net dismantle

2012-08-09 02:31:37 -07:00

tcp_minisocks.c

net: tcp: move sk_rx_dst_set call after tcp_create_openreq_child()

2012-08-20 03:03:33 -07:00

tcp_output.c

tcp: fix possible socket refcount problem

2012-08-21 14:42:23 -07:00

tcp_probe.c

net: cleanup unsigned to unsigned int

2012-04-15 12:44:40 -04:00

tcp_scalable.c

tcp: mark tcp_congestion_ops read_mostly

2011-03-10 00:40:17 -08:00

tcp_timer.c

tcp: fix possible socket refcount problem

2012-08-21 14:42:23 -07:00

tcp_vegas.c

tcp: mark tcp_congestion_ops read_mostly

2011-03-10 00:40:17 -08:00

tcp_vegas.h

[TCP]: congestion control API pass RTT in microseconds

2007-07-31 02:27:57 -07:00

tcp_veno.c

tcp: mark tcp_congestion_ops read_mostly

2011-03-10 00:40:17 -08:00

tcp_westwood.c

tcp: mark tcp_congestion_ops read_mostly

2011-03-10 00:40:17 -08:00

tcp_yeah.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

tcp.c

tcp: Apply device TSO segment limit earlier

2012-08-02 00:19:17 -07:00

tunnel4.c

net: Convert printks to pr_<level>

2012-03-11 23:42:51 -07:00

udp_diag.c

net: make sock diag per-namespace

2012-07-16 22:31:34 -07:00

udp_impl.h

ipv4: fix checkpatch errors

2012-04-15 12:37:19 -04:00

udp.c

ipv4: fix ip_send_skb()

2012-08-10 14:08:57 -07:00

udplite.c

net: ipv4: Standardize prefixes for message logging

2012-03-12 17:05:21 -07:00

xfrm4_input.c

ipv4: Fix input route performance regression.

2012-07-26 15:50:39 -07:00

xfrm4_mode_beet.c

ipsec: be careful of non existing mac headers

2012-02-23 16:50:45 -05:00

xfrm4_mode_transport.c

[IPSEC]: Use IPv6 calling convention as the convention for x->mode->output

2007-10-10 16:55:54 -07:00

xfrm4_mode_tunnel.c

net/ipv4: VTI support rx-path hook in xfrm4_mode_tunnel.

2012-07-18 09:36:12 -07:00

xfrm4_output.c

xfrm4: Don't call icmp_send on local error

2011-07-01 17:33:19 -07:00

xfrm4_policy.c

ipv4: Properly purge netdev references on uncached routes.

2012-07-31 15:06:50 -07:00

xfrm4_state.c

net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules

2011-10-31 19:30:30 -04:00

xfrm4_tunnel.c

net: ipv4: Standardize prefixes for message logging

2012-03-12 17:05:21 -07:00