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linux/net/ipv6
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Eric Dumazet c191a836a9 tcp: disallow bind() to reuse addr/port 
inet_csk_bind_conflict() logic currently disallows a bind() if
it finds a friend socket (a socket bound on same address/port)
satisfying a set of conditions :

1) Current (to be bound) socket doesnt have sk_reuse set
OR
2) other socket doesnt have sk_reuse set
OR
3) other socket is in LISTEN state

We should add the CLOSE state in the 3) condition, in order to avoid two
REUSEADDR sockets in CLOSE state with same local address/port, since
this can deny further operations.

Note : a prior patch tried to address the problem in a different (and
buggy) way. (commit fda48a0d7a tcp: bind() fix when many ports
are bound).

Reported-by: Gaspar Chilingarov <gasparch@gmail.com>
Reported-by: Daniel Baluta <daniel.baluta@gmail.com>
Tested-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-11 14:03:07 -08:00
..
netfilter ipv6: Use ip6_dst_hoplimit() instead of direct dst_metric() calls. 2010-12-12 21:14:46 -08:00
addrconf.c ipv6: remove duplicate neigh_ifdown 2010-12-18 22:01:17 -08:00
addrconf_core.c ipv6: Remove IPV6_ADDR_RESERVED 2010-02-26 03:59:07 -08:00
addrlabel.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-09-27 01:03:03 -07:00
af_inet6.c inet6: Remove redundant unlikely() 2010-12-10 14:57:34 -08:00
ah6.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
anycast.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
datagram.c tproxy: added tproxy sockopt interface in the IPV6 layer 2010-10-21 16:08:28 +02:00
esp6.c xfrm: Traffic Flow Confidentiality for IPv6 ESP 2010-12-10 14:43:59 -08:00
exthdrs.c ipv6: avoid two atomics in ipv6_rthdr_rcv() 2010-06-14 23:13:06 -07:00
exthdrs_core.c net: return operator cleanup 2010-09-23 14:33:39 -07:00
fib6_rules.c fib6: use FIB_LOOKUP_NOREF in fib6_rule_lookup() 2010-10-16 11:13:21 -07:00
icmp.c ipv6: fix ICMP6_MIB_OUTERRORS 2010-06-09 18:39:27 -07:00
inet6_connection_sock.c tcp: disallow bind() to reuse addr/port 2011-01-11 14:03:07 -08:00
inet6_hashtables.c tcp: Fix a connect() race with timewait sockets 2009-12-08 20:17:51 -08:00
ip6_fib.c fib: avoid false sharing on fib_table_hash 2010-10-16 11:13:23 -07:00
ip6_flowlabel.c IPv6: Add dontfrag argument to relevant functions 2010-04-23 23:35:28 -07:00
ip6_input.c Merge branch 'master' of /repos/git/net-next-2.6 2010-04-20 16:02:01 +02:00
ip6_output.c ipv6: Fragment locally generated tunnel-mode IPSec6 packets as needed. 2010-12-19 20:22:23 -08:00
ip6_tunnel.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-12-08 13:47:38 -08:00
ip6mr.c net: use the macros defined for the members of flowi 2010-11-17 12:27:45 -08:00
ipcomp6.c xfrm: SA lookups signature with mark 2010-02-22 16:20:22 -08:00
ipv6_sockglue.c tproxy: Add missing CAP_NET_ADMIN check to ipv6 side 2010-10-24 16:07:50 -07:00
Kconfig ipv6: ip6mr: support multiple tables 2010-05-11 14:40:55 +02:00
Makefile [IPV6] MROUTE: Support multicast forwarding. 2008-04-05 22:33:38 +09:00
mcast.c ipv6: mcast: RCU conversion 2010-11-24 11:16:42 -08:00
mip6.c IPv6: fix CoA check in RH2 input handler (mip6_rthdr_input()) 2010-07-18 15:04:33 -07:00
ndisc.c net: Abstract away all dst_entry metrics accesses. 2010-12-09 10:46:36 -08:00
netfilter.c net: use the macros defined for the members of flowi 2010-11-17 12:27:45 -08:00
proc.c ipv6/udp: report SndbufErrors and RcvbufErrors 2010-10-30 16:17:23 -07:00
protocol.c net: add __rcu annotations to protocol 2010-10-27 11:37:31 -07:00
raw.c net: add __rcu annotation to sk_filter 2010-10-25 14:18:28 -07:00
reassembly.c ipv6: Prepare the tree for un-inlined jhash. 2010-11-28 11:26:21 -08:00
route.c ipv6: fib6_ifdown cleanup 2010-12-18 22:01:16 -08:00
sit.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-12-08 13:47:38 -08:00
syncookies.c syncookies: add support for ECN 2010-06-26 22:00:03 -07:00
sysctl_net_ipv6.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
tcp_ipv6.c net: Abstract default ADVMSS behind an accessor. 2010-12-13 12:52:14 -08:00
tunnel6.c tunnels: add _rcu annotations 2010-10-25 13:09:45 -07:00
udp.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-12-17 12:27:22 -08:00
udp_impl.h net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
udplite.c net: fix nulls list corruptions in sk_prot_alloc 2010-12-16 14:26:56 -08:00
xfrm6_input.c netfilter: ipv6: use NFPROTO values for NF_HOOK invocation 2010-03-25 16:00:49 +01:00
xfrm6_mode_beet.c ipsec: Interfamily IPSec BEET, ipv4-inner ipv6-outer 2008-08-06 02:40:25 -07:00
xfrm6_mode_ro.c [IPSEC]: Make x->lastused an unsigned long 2008-01-28 14:53:52 -08:00
xfrm6_mode_transport.c [IPSEC]: Use IPv6 calling convention as the convention for x->mode->output 2007-10-10 16:55:54 -07:00
xfrm6_mode_tunnel.c ipv6: Use ip6_dst_hoplimit() instead of direct dst_metric() calls. 2010-12-12 21:14:46 -08:00
xfrm6_output.c ipv6: Fragment locally generated tunnel-mode IPSec6 packets as needed. 2010-12-19 20:22:23 -08:00
xfrm6_policy.c net dst: use a percpu_counter to track entries 2010-10-11 13:06:53 -07:00
xfrm6_state.c xfrm: Allow different selector family in temporary state 2010-09-20 11:11:38 -07:00
xfrm6_tunnel.c xfrm6: make xfrm6_tunnel_free_spi local 2010-10-21 03:09:45 -07:00