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Julian Anastasov bbb5823cf7 netfilter: nf_conntrack: fix rt_gateway checks for H.323 helper 
After the change "Adjust semantics of rt->rt_gateway"
(commit f8126f1d51) we should properly match the nexthop when
destinations are directly connected because rt_gateway can be 0.

The rt_gateway checks in H.323 helper try to avoid the creation
of an unnecessary expectation in this call-forwarding case:

http://people.netfilter.org/zhaojingmin/h323_conntrack_nat_helper/#_Toc133598073

However, the existing code fails to avoid that in many cases,
see this thread:

http://marc.info/?l=linux-netdev&m=135043175028620&w=2

It seems it is not trivial to know from the kernel if two hosts
have to go through the firewall to communicate each other, which
is the main point of the call-forwarding filter code to avoid
creating unnecessary expectations.

So this patch just gets things the way they were as before
commit f8126f1d51.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 		2012-10-22 12:21:55 +02:00
..
ipset netfilter: ipset: Support to match elements marked with "nomatch" 2012-09-22 22:44:34 +02:00
ipvs Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-10-17 10:59:20 +02:00
Kconfig netfilter: combine ipt_REDIRECT and ip6t_REDIRECT 2012-09-21 12:12:05 +02:00
Makefile netfilter: combine ipt_REDIRECT and ip6t_REDIRECT 2012-09-21 12:12:05 +02:00
core.c netfilter: pass 'nf_hook_ops' instead of 'list_head' to nf_queue() 2012-09-03 13:52:54 +02:00
nf_conntrack_acct.c net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
nf_conntrack_amanda.c netfilter: nf_nat: support IPv6 in amanda NAT helper 2012-08-30 03:00:21 +02:00
nf_conntrack_broadcast.c netfilter: nf_conntrack: nf_conntrack snmp helper 2011-01-18 18:12:24 +01:00
nf_conntrack_core.c netfilter: nf_nat: fix oops when unloading protocol modules 2012-09-21 11:35:18 +02:00
nf_conntrack_ecache.c netlink: Rename pid to portid to avoid confusion 2012-09-10 15:30:41 -04:00
nf_conntrack_expect.c netfilter: nf_ct_expect: fix possible access to uninitialized timer 2012-08-16 11:49:53 +02:00
nf_conntrack_extend.c netfilter: nf_ct_ext: support variable length extensions 2012-06-16 15:08:49 +02:00
nf_conntrack_ftp.c netfilter: nf_ct_ftp: add sequence tracking pickup facility for injected entries 2012-09-24 14:29:40 +02:00
nf_conntrack_h323_asn1.c netfilter: h323: bug in parsing of ASN1 SEQOF field 2011-04-04 15:21:02 +02:00
nf_conntrack_h323_main.c netfilter: nf_conntrack: fix rt_gateway checks for H.323 helper 2012-10-22 12:21:55 +02:00
nf_conntrack_h323_types.c
…
nf_conntrack_helper.c netfilter: nf_ct_helper: disable automatic helper re-assignment of different type 2012-06-19 01:24:52 +02:00
nf_conntrack_irc.c netfilter: nf_nat: support IPv6 in IRC NAT helper 2012-08-30 03:00:23 +02:00
nf_conntrack_l3proto_generic.c
…
nf_conntrack_netbios_ns.c netfilter: nf_conntrack: nf_conntrack snmp helper 2011-01-18 18:12:24 +01:00
nf_conntrack_netlink.c netfilter: nf_ct_ftp: add sequence tracking pickup facility for injected entries 2012-09-24 14:29:40 +02:00
nf_conntrack_pptp.c netfilter: nf_nat: add protoff argument to packet mangling functions 2012-08-30 03:00:13 +02:00
nf_conntrack_proto.c netfilter: nf_conntrack: remove unnecessary RTNL locking 2012-08-20 12:46:29 +02:00
nf_conntrack_proto_dccp.c netfilter: nf_ct_dccp: add dccp_kmemdup_sysctl_table function 2012-06-27 19:14:31 +02:00
nf_conntrack_proto_generic.c netfilter: nf_conntrack: generalize nf_ct_l4proto_net 2012-07-04 19:37:22 +02:00
nf_conntrack_proto_gre.c netfilter: nf_conntrack: prepare l4proto->init_net cleanup 2012-06-27 18:31:14 +02:00
nf_conntrack_proto_sctp.c netfilter: nf_ct_sctp: merge sctpv[4,6]_net_init into sctp_net_init 2012-06-27 19:13:31 +02:00
nf_conntrack_proto_tcp.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-09-15 11:43:53 -04:00
nf_conntrack_proto_udp.c netfilter: nf_conntrack: generalize nf_ct_l4proto_net 2012-07-04 19:37:22 +02:00
nf_conntrack_proto_udplite.c netfilter: nf_ct_udplite: add udplite_kmemdup_sysctl_table function 2012-06-27 19:12:52 +02:00
nf_conntrack_sane.c netfilter: nf_ct_helper: implement variable length helper private data 2012-06-16 15:08:55 +02:00
nf_conntrack_sip.c netfilter: nf_nat: support IPv6 in SIP NAT helper 2012-08-30 03:00:22 +02:00
nf_conntrack_snmp.c netfilter: nf_conntrack: nf_conntrack snmp helper 2011-01-18 18:12:24 +01:00
nf_conntrack_standalone.c net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
nf_conntrack_tftp.c netfilter: nf_nat: support IPv6 in TFTP NAT helper 2012-08-30 03:00:24 +02:00
nf_conntrack_timeout.c netfilter: nf_ct_ext: add timeout extension 2012-03-07 17:41:25 +01:00
nf_conntrack_timestamp.c net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
nf_internals.h netfilter: pass 'nf_hook_ops' instead of 'list_head' to nf_queue() 2012-09-03 13:52:54 +02:00
nf_log.c net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
nf_nat_amanda.c netfilter: nf_nat: support IPv6 in amanda NAT helper 2012-08-30 03:00:21 +02:00
nf_nat_core.c netfilter: nf_nat: remove obsolete rcu_read_unlock call 2012-09-21 12:09:25 +02:00
nf_nat_ftp.c netfilter: nf_nat: support IPv6 in FTP NAT helper 2012-08-30 03:00:20 +02:00
nf_nat_helper.c netfilter: add protocol independent NAT core 2012-08-30 03:00:14 +02:00
nf_nat_irc.c netfilter: nf_nat: support IPv6 in IRC NAT helper 2012-08-30 03:00:23 +02:00
nf_nat_proto_common.c netfilter: add protocol independent NAT core 2012-08-30 03:00:14 +02:00
nf_nat_proto_dccp.c netfilter: add protocol independent NAT core 2012-08-30 03:00:14 +02:00
nf_nat_proto_sctp.c netfilter: add protocol independent NAT core 2012-08-30 03:00:14 +02:00
nf_nat_proto_tcp.c netfilter: add protocol independent NAT core 2012-08-30 03:00:14 +02:00
nf_nat_proto_udp.c netfilter: add protocol independent NAT core 2012-08-30 03:00:14 +02:00
nf_nat_proto_udplite.c netfilter: add protocol independent NAT core 2012-08-30 03:00:14 +02:00
nf_nat_proto_unknown.c netfilter: add protocol independent NAT core 2012-08-30 03:00:14 +02:00
nf_nat_sip.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-09-03 15:34:51 +02:00
nf_nat_tftp.c netfilter: nf_nat: support IPv6 in TFTP NAT helper 2012-08-30 03:00:24 +02:00
nf_queue.c netfilter: pass 'nf_hook_ops' instead of 'list_head' to nf_queue() 2012-09-03 13:52:54 +02:00
nf_sockopt.c
…
nf_tproxy_core.c netfilter: tproxy: do not assign timewait sockets to skb->sk 2011-02-17 11:32:38 +01:00
nfnetlink.c netlink: hide struct module parameter in netlink_kernel_create 2012-09-08 18:46:30 -04:00
nfnetlink_acct.c netlink: Rename pid to portid to avoid confusion 2012-09-10 15:30:41 -04:00
nfnetlink_cthelper.c netfilter: nf_ct_ftp: add sequence tracking pickup facility for injected entries 2012-09-24 14:29:40 +02:00
nfnetlink_cttimeout.c netlink: Rename pid to portid to avoid confusion 2012-09-10 15:30:41 -04:00
nfnetlink_log.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-10-02 13:38:27 -07:00
nfnetlink_queue_core.c netfilter: nfnetlink_queue: add NFQA_CAP_LEN attribute 2012-09-24 15:10:29 +02:00
nfnetlink_queue_ct.c netfilter: nfnetlink_queue: fix sparse warning due to missing include 2012-06-23 02:13:38 +02:00
x_tables.c net: Fix files explicitly needing to include module.h 2011-10-31 19:30:28 -04:00
xt_AUDIT.c ipv6: Add fragment reporting to ipv6_skip_exthdr(). 2011-12-03 09:35:10 -08:00
xt_CHECKSUM.c netfilter: add CHECKSUM target 2010-07-15 17:20:46 +02:00
xt_CLASSIFY.c netfilter: xt_CLASSIFY: add ARP support, allow CLASSIFY target on any table 2010-11-15 13:57:56 +01:00
xt_CONNSECMARK.c netfilter: xtables: substitute temporary defines by final name 2010-05-11 18:31:17 +02:00
xt_CT.c netfilter: xt_CT: fix timeout setting with IPv6 2012-10-15 13:38:58 +02:00
xt_DSCP.c netfilter: IPv6: fix DSCP mangle code 2011-05-10 10:00:21 +02:00
xt_HL.c netfilter: Reduce switch/case indent 2011-07-01 16:11:15 -07:00
xt_HMARK.c netfilter: xt_HMARK: fix endianness and provide consistent hashing 2012-06-07 14:53:01 +02:00
xt_IDLETIMER.c netfilter: Remove unnecessary OOM logging messages 2011-11-01 09:19:49 +01:00
xt_LED.c netfilter: xtables: add missing aliases for autoloading via iptables 2011-01-18 06:33:54 +01:00
xt_LOG.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2012-10-02 11:11:09 -07:00
xt_NETMAP.c netfilter: combine ipt_NETMAP and ip6t_NETMAP 2012-09-21 12:11:08 +02:00
xt_NFLOG.c netfilter: xtables: substitute temporary defines by final name 2010-05-11 18:31:17 +02:00
xt_NFQUEUE.c netfilter: sparse endian fixes 2012-08-20 12:45:57 +02:00
xt_RATEEST.c net,rcu: Convert call_rcu(xt_rateest_free_rcu) to kfree_rcu() 2011-07-20 14:10:19 -07:00
xt_REDIRECT.c netfilter: combine ipt_REDIRECT and ip6t_REDIRECT 2012-09-21 12:12:05 +02:00
xt_SECMARK.c secmark: make secmark object handling generic 2010-10-21 10:12:48 +11:00
xt_TCPMSS.c net: Convert net_ratelimit uses to net_<level>_ratelimited 2012-05-15 13:45:03 -04:00
xt_TCPOPTSTRIP.c net:netfilter: use IS_ENABLED 2011-12-16 15:49:52 -05:00
xt_TEE.c netfilter: xt_TEE: don't use destination address found in header 2012-10-17 11:00:31 +02:00
xt_TPROXY.c net: Fix (nearly-)kernel-doc comments for various functions 2012-07-10 23:13:45 -07:00
xt_TRACE.c netfilter: xtables: substitute temporary defines by final name 2010-05-11 18:31:17 +02:00
xt_addrtype.c net:netfilter: use IS_ENABLED 2011-12-16 15:49:52 -05:00
xt_cluster.c netfilter: nf_conntrack: IPS_UNTRACKED bit 2010-06-08 16:09:52 +02:00
xt_comment.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_connbytes.c Merge branch 'nf-next' of git://1984.lsi.us.es/net-next 2011-12-25 02:21:45 -05:00
xt_connlimit.c netfilter: xt_connlimit: remove revision 0 2012-06-07 14:58:39 +02:00
xt_connmark.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_conntrack.c netfilter: revert a2361c8735 2011-05-10 12:13:36 +02:00
xt_cpu.c netfilter: xtables: add missing aliases for autoloading via iptables 2011-01-18 06:33:54 +01:00
xt_dccp.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
xt_devgroup.c netfilter: xtables: add device group match 2011-02-03 00:05:43 +01:00
xt_dscp.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_ecn.c netfilter: xtables: collapse conditions in xt_ecn 2011-12-27 20:45:25 +01:00
xt_esp.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
xt_hashlimit.c netfilter: xt_hashlimit: use _ALL macro to reject unknown flag bits 2012-05-17 00:56:31 +02:00
xt_helper.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_hl.c netfilter: Reduce switch/case indent 2011-07-01 16:11:15 -07:00
xt_iprange.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-02-04 14:28:58 -08:00
xt_ipvs.c IPVS: netns, use ip_vs_proto_data as param. 2011-01-13 10:30:27 +09:00
xt_length.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_limit.c netfilter: xt_limit: have r->cost != 0 case work 2012-09-26 01:33:16 +02:00
xt_mac.c netfilter: Convert compare_ether_addr to ether_addr_equal 2012-05-09 20:49:18 -04:00
xt_mark.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_multiport.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
xt_nat.c netfilter: xt_nat: fix incorrect hooks for SNAT and DNAT targets 2012-10-15 13:39:12 +02:00
xt_nfacct.c netfilter: xtables: add nfacct match to support extended accounting 2011-12-25 02:43:17 +01:00
xt_osf.c netfilter: sparse endian fixes 2012-08-20 12:45:57 +02:00
xt_owner.c userns: xt_owner: Add basic user namespace support. 2012-08-14 21:55:30 -07:00
xt_physdev.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_pkttype.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_policy.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_quota.c net: Fix files explicitly needing to include module.h 2011-10-31 19:30:28 -04:00
xt_rateest.c netfilter: xt_rateest: fix xt_rateest_mt_checkentry() 2011-07-29 16:24:46 +02:00
xt_realm.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_recent.c userns xt_recent: Specify the owner/group of ip_list_perms in the initial user namespace 2012-08-14 21:55:29 -07:00
xt_repldata.h netfilter: xtables: generate initial table on-demand 2010-02-10 17:50:47 +01:00
xt_sctp.c netfilter: xt_sctp: use WORD_ROUND macro to calculate length of multiple of 4 bytes 2010-06-09 14:47:40 +02:00
xt_set.c netfilter: ipset: Support to match elements marked with "nomatch" 2012-09-22 22:44:34 +02:00
xt_socket.c netfilter: xt_socket: fix compilation warnings with gcc 4.7 2012-09-03 13:31:39 +02:00
xt_state.c netfilter: nf_conntrack: IPS_UNTRACKED bit 2010-06-08 16:09:52 +02:00
xt_statistic.c net: Fix files explicitly needing to include module.h 2011-10-31 19:30:28 -04:00
xt_string.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
xt_tcpmss.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
xt_tcpudp.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
xt_time.c netfilter: xt_time: add support to ignore day transition 2012-09-24 14:29:01 +02:00
xt_u32.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00