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linux/net/ipv4
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Wei Yongjun 1ac530b355 tcp: missing check ACK flag of received segment in FIN-WAIT-2 state 
RFC0793 defined that in FIN-WAIT-2 state if the ACK bit is off drop
the segment and return[Page 72]. But this check is missing in function
tcp_timewait_state_process(). This cause the segment with FIN flag but
no ACK has two diffent action:

Case 1:
    Node A                      Node B
              <-------------    FIN,ACK
                                (enter FIN-WAIT-1)
    ACK       ------------->
                                (enter FIN-WAIT-2)
    FIN       ------------->    discard
                                (move sk to tw list)

Case 2:
    Node A                      Node B
              <-------------    FIN,ACK
                                (enter FIN-WAIT-1)
    ACK       ------------->
                                (enter FIN-WAIT-2)
                                (move sk to tw list)
    FIN       ------------->

              <-------------    ACK

This patch fixed the problem.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-25 20:03:15 -07:00
..
netfilter
netfilter: ip_tables: fix build error
2009-06-12 01:53:09 +02:00
af_inet.c
ipv4: remove ip_mc_drop_socket() declaration from af_inet.c.
2009-06-03 21:43:26 -07:00
ah4.c
netns xfrm: AH/ESP in netns!
2008-11-25 17:59:27 -08:00
arp.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
cipso_ipv4.c
netlabel: Label incoming TCP connections correctly in SELinux
2009-03-28 15:01:36 +11:00
datagram.c
mib: add net to IP_INC_STATS_BH
2008-07-16 20:20:11 -07:00
devinet.c
net: Fix devinet_sysctl_forward
2009-05-18 22:15:58 -07:00
esp4.c
netns xfrm: AH/ESP in netns!
2008-11-25 17:59:27 -08:00
fib_frontend.c
ipv4: cleanup: remove unnecessary include.
2009-05-18 15:16:38 -07:00
fib_hash.c
ipv4: cleanup - remove two unused parameters from fib_semantic_match().
2009-05-18 15:16:37 -07:00
fib_lookup.h
ipv4: cleanup - remove two unused parameters from fib_semantic_match().
2009-05-18 15:16:37 -07:00
fib_rules.c
net: Remove unused parameter from fill method in fib_rules_ops.
2009-05-20 17:26:23 -07:00
fib_semantics.c
ipv4: cleanup - remove two unused parameters from fib_semantic_match().
2009-05-18 15:16:37 -07:00
fib_trie.c
ipv4: Fix fib_trie rebalancing, part 2
2009-06-18 00:28:51 -07:00
icmp.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
igmp.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
inet_connection_sock.c
net: move bsockets outside of read only beginning of struct inet_hashinfo
2009-02-01 12:31:33 -08:00
inet_diag.c
net: correct off-by-one write allocations reports
2009-06-18 00:29:12 -07:00
inet_fragment.c
inet fragments: fix sparse warning: context imbalance
2009-02-26 23:13:35 -08:00
inet_hashtables.c
net: move bsockets outside of read only beginning of struct inet_hashinfo
2009-02-01 12:31:33 -08:00
inet_lro.c
include/net net/ - csum_partial - remove unnecessary casts
2008-11-19 15:44:53 -08:00
inet_timewait_sock.c
Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/vegard/kmemcheck
2009-06-16 13:09:51 -07:00
inetpeer.c
net: clean up net/ipv4/ah4.c esp4.c fib_semantics.c inet_connection_sock.c inetpeer.c ip_output.c
2008-11-03 00:23:42 -08:00
ip_forward.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
ip_fragment.c
ipv4: Use frag list abstraction interfaces.
2009-06-09 00:19:37 -07:00
ip_gre.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
ip_input.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
ip_options.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
ip_output.c
net: No more expensive sock_hold()/sock_put() on each tx
2009-06-11 02:55:43 -07:00
ip_sockglue.c
net: skb->rtable accessor
2009-06-03 02:51:02 -07:00
ipcomp.c
netns xfrm: state lookup in netns
2008-11-25 17:30:50 -08:00
ipconfig.c
ipv4: teach ipconfig about the MTU option in DHCP
2009-05-19 15:36:17 -07:00
ipip.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
ipmr.c
PIM-SM: namespace changes
2009-06-14 03:16:13 -07:00
Kconfig
ipv4: update ARPD help text
2009-06-13 23:36:32 -07:00
Makefile
IPVS: Move IPVS to net/netfilter/ipvs
2008-10-07 08:38:24 +11:00
netfilter.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
proc.c
snmp: add missing counters for RFC 4293
2009-04-27 02:45:02 -07:00
protocol.c
net: remove CVS keywords
2008-06-11 21:00:38 -07:00
raw.c
net: correct off-by-one write allocations reports
2009-06-18 00:29:12 -07:00
route.c
ipv4 routing: Ensure that route cache entries are usable and reclaimable with caching is off
2009-06-23 16:36:26 -07:00
syncookies.c
syncookies: remove last_synq_overflow from struct tcp_sock
2009-04-20 02:25:26 -07:00
sysctl_net_ipv4.c
net: '&' redux
2008-11-03 18:21:05 -08:00
tcp_bic.c
tcp: add helper for AI algorithm
2009-03-02 03:00:15 -08:00
tcp_cong.c
tcp: add helper for AI algorithm
2009-03-02 03:00:15 -08:00
tcp_cubic.c
tcp: add helper for AI algorithm
2009-03-02 03:00:15 -08:00
tcp_diag.c
net: inet_diag_handler structs can be const
2008-11-19 15:43:27 -08:00
tcp_highspeed.c
[TCP]: Cong.ctrl modules: remove unused good_ack from cong_avoid
2008-01-28 14:55:41 -08:00
tcp_htcp.c
htcp: merge icsk_ca_state compare
2009-03-02 03:00:14 -08:00
tcp_hybla.c
tcp: Fix tcp_hybla zero congestion window growth with small rho and large cwnd.
2008-10-07 15:58:17 -07:00
tcp_illinois.c
[TCP]: Cong.ctrl modules: remove unused good_ack from cong_avoid
2008-01-28 14:55:41 -08:00
tcp_input.c
tcp: fix loop in ofo handling code and reduce its complexity
2009-05-29 15:02:29 -07:00
tcp_ipv4.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
tcp_lp.c
[TCP]: Cong.ctrl modules: remove unused good_ack from cong_avoid
2008-01-28 14:55:41 -08:00
tcp_minisocks.c
tcp: missing check ACK flag of received segment in FIN-WAIT-2 state
2009-06-25 20:03:15 -07:00
tcp_output.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
tcp_probe.c
tcp: '< 0' test on unsigned
2009-03-13 16:05:14 -07:00
tcp_scalable.c
tcp: add helper for AI algorithm
2009-03-02 03:00:15 -08:00
tcp_timer.c
tcp: cleanup ca_state mess in tcp_timer
2009-03-02 03:00:13 -08:00
tcp_vegas.c
tcp: tcp_vegas ssthresh bugfix
2009-05-25 22:44:59 -07:00
tcp_vegas.h
[TCP]: congestion control API pass RTT in microseconds
2007-07-31 02:27:57 -07:00
tcp_veno.c
tcp: add helper for AI algorithm
2009-03-02 03:00:15 -08:00
tcp_westwood.c
[TCP]: congestion control API pass RTT in microseconds
2007-07-31 02:27:57 -07:00
tcp_yeah.c
tcp: add helper for AI algorithm
2009-03-02 03:00:15 -08:00
tcp.c
tcp: Use SKB queue and list helpers instead of doing it by-hand.
2009-05-28 21:35:47 -07:00
tunnel4.c
[IPV4] TUNNEL4: Fix incoming packet length check for inter-protocol tunnel.
2008-06-05 04:02:33 +09:00
udp_impl.h
udp: introduce struct udp_table and multiple spinlocks
2008-10-29 01:41:45 -07:00
udp.c
net: correct off-by-one write allocations reports
2009-06-18 00:29:12 -07:00
udplite.c
udp: RCU handling for Unicast packets.
2008-10-29 02:11:14 -07:00
xfrm4_input.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
xfrm4_mode_beet.c
ipsec: Interfamily IPSec BEET
2008-08-06 02:39:30 -07:00
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: skb->dst accessors
2009-06-03 02:51:04 -07:00
xfrm4_output.c
net: skb->dst accessors
2009-06-03 02:51:04 -07:00
xfrm4_policy.c
net: replace uses of __constant_{endian}
2009-02-01 00:45:17 -08:00
xfrm4_state.c
xfrm: remove useless forward declarations
2008-11-25 01:05:54 -08:00
xfrm4_tunnel.c
[IPCOMP]: Fix reception of incompressible packets
2008-01-31 19:27:24 -08:00