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linux/net/ipv4
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Florian Westphal 271c3b9b7b tcp: honour SO_BINDTODEVICE for TW_RST case too 
Hannes points out that when we generate tcp reset for timewait sockets we
pretend we found no socket and pass NULL sk to tcp_vX_send_reset().

Make it cope with inet tw sockets and then provide tw sk.

This makes RSTs appear on correct interface when SO_BINDTODEVICE is used.

Packetdrill test case:
// want default route to be used, we rely on BINDTODEVICE
`ip route del 192.0.2.0/24 via 192.168.0.2 dev tun0`

0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
// test case still works due to BINDTODEVICE
0.001 setsockopt(3, SOL_SOCKET, SO_BINDTODEVICE, "tun0", 4) = 0
0.100...0.200 connect(3, ..., ...) = 0

0.100 > S 0:0(0) <mss 1460,sackOK,nop,nop>
0.200 < S. 0:0(0) ack 1 win 32792 <mss 1460,sackOK,nop,nop>
0.200 > . 1:1(0) ack 1

0.210 close(3) = 0

0.210 > F. 1:1(0) ack 1 win 29200
0.300 < . 1:1(0) ack 2 win 46

// more data while in FIN_WAIT2, expect RST
1.300 < P. 1:1001(1000) ack 1 win 46

// fails without this change -- default route is used
1.301 > R 1:1(0) win 0

Reported-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2015-12-22 17:03:05 -05:00
..
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2015-12-18 15:37:42 -05:00
Kconfig net: diag: Support destroying TCP sockets. 2015-12-15 23:26:52 -05:00
Makefile tcp: track the packet timings in RACK 2015-10-21 07:00:48 -07:00
af_inet.c net: add validation for the socket syscall protocol argument 2015-12-14 16:09:30 -05:00
ah4.c ah4: Fix error return in ah_input(). 2015-08-25 13:38:50 -07:00
arp.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-10-20 06:08:27 -07:00
cipso_ipv4.c
…
datagram.c net: Set sk_txhash from a random number 2015-07-29 22:44:04 -07:00
devinet.c netlink: Rightsize IFLA_AF_SPEC size calculation 2015-10-21 19:15:20 -07:00
esp4.c
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fib_frontend.c net: Flush local routes when device changes vrf association 2015-12-13 23:58:44 -05:00
fib_lookup.h
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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 fib_trie: leaf_walk_rcu should not compute key if key is less than pn->key 2015-10-27 18:14:51 -07:00
fou.c fou: clean up socket with kfree_rcu 2015-12-16 19:03:02 -05:00
gre_demux.c gre: Remove support for sharing GRE protocol hook. 2015-08-10 14:03:54 -07:00
gre_offload.c ipv6: gre: support SIT encapsulation 2015-10-26 22:01:18 -07:00
icmp.c Revert "ipv4/icmp: redirect messages can use the ingress daddr as source" 2015-10-14 06:01:07 -07:00
igmp.c ipv4: igmp: Allow removing groups from a removed interface 2015-12-03 12:07:05 -05:00
inet_connection_sock.c tcp: ensure proper barriers in lockless contexts 2015-11-15 18:36:38 -05:00
inet_diag.c net: diag: Support SOCK_DESTROY for inet sockets. 2015-12-15 23:26:51 -05:00
inet_fragment.c net: fix percpu memory leaks 2015-11-02 22:47:14 -05:00
inet_hashtables.c tcp/dccp: fix hashdance race for passive sessions 2015-10-23 05:42:21 -07:00
inet_lro.c
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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: Pass net into dst_output and remove dst_output_okfn 2015-10-08 04:26:54 -07:00
ip_fragment.c net: fix percpu memory leaks 2015-11-02 22:47:14 -05:00
ip_gre.c net: remove unnecessary mroute.h includes 2015-11-30 15:26:21 -05:00
ip_input.c ipv4: Pass struct net into ip_defrag and ip_check_defrag 2015-10-12 19:44:16 -07:00
ip_options.c
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ip_output.c net: Eliminate NETIF_F_GEN_CSUM and NETIF_F_V[46]_CSUM 2015-12-15 16:50:20 -05:00
ip_sockglue.c ipv4: fix a potential deadlock in mcast getsockopt() path 2015-11-04 21:29:59 -05:00
ip_tunnel.c net: remove unnecessary mroute.h includes 2015-11-30 15:26:21 -05:00
ip_tunnel_core.c net: remove unnecessary mroute.h includes 2015-11-30 15:26:21 -05:00
ip_vti.c net: remove unnecessary mroute.h includes 2015-11-30 15:26:21 -05:00
ipcomp.c
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ipconfig.c net/ipv4/ipconfig: Rejoin broken lines in console output 2015-11-24 12:00:09 -05:00
ipip.c net: remove unnecessary mroute.h includes 2015-11-30 15:26:21 -05:00
ipmr.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 21:09:12 -05:00
netfilter.c ipv4: Pass struct net into ip_route_me_harder 2015-09-29 20:21:32 +02:00
ping.c
…
proc.c
…
protocol.c
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raw.c raw: increment correct SNMP counters for ICMP messages 2015-11-16 15:08:48 -05:00
route.c net: Do not drop to make_route if oif is l3mdev 2015-10-08 05:18:47 -07:00
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: Allow accepted sockets to be bound to l3mdev domain 2015-12-18 14:43:38 -05:00
tcp.c net: tcp: deal with listen sockets properly in tcp_abort. 2015-12-22 16:01:47 -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 tcp/dccp: fix hashdance race for passive sessions 2015-10-23 05:42:21 -07:00
tcp_highspeed.c
…
tcp_htcp.c
…
tcp_hybla.c
…
tcp_illinois.c
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tcp_input.c net: Allow accepted sockets to be bound to l3mdev domain 2015-12-18 14:43:38 -05:00
tcp_ipv4.c tcp: honour SO_BINDTODEVICE for TW_RST case too 2015-12-22 17:03:05 -05:00
tcp_lp.c
…
tcp_memcontrol.c
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tcp_metrics.c net: Add helper function to compare inetpeer addresses 2015-08-28 13:32:36 -07:00
tcp_minisocks.c tcp: honour SO_BINDTODEVICE for TW_RST case too 2015-12-22 17:03:05 -05:00
tcp_offload.c
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tcp_output.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-17 22:08:28 -05:00
tcp_probe.c
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tcp_recovery.c tcp: use RACK to detect losses 2015-10-21 07:00:53 -07:00
tcp_scalable.c
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tcp_timer.c tcp: fix Fast Open snmp over-counting bug 2015-11-20 10:51:12 -05:00
tcp_vegas.c
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tcp_vegas.h
…
tcp_veno.c
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tcp_westwood.c
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tcp_yeah.c
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tunnel4.c
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udp.c net: Eliminate NETIF_F_GEN_CSUM and NETIF_F_V[46]_CSUM 2015-12-15 16:50:20 -05:00
udp_diag.c
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udp_impl.h
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udp_offload.c net: Eliminate NETIF_F_GEN_CSUM and NETIF_F_V[46]_CSUM 2015-12-15 16:50:20 -05:00
udp_tunnel.c tunnel: introduce udp_tun_rx_dst() 2015-08-27 15:42:47 -07:00
udplite.c
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xfrm4_input.c netfilter: Pass net into okfn 2015-09-17 17:18:37 -07:00
xfrm4_mode_beet.c
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xfrm4_mode_transport.c
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xfrm4_mode_tunnel.c
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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-next 2015-10-30 20:51:56 +09:00
xfrm4_protocol.c
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xfrm4_state.c
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xfrm4_tunnel.c
…