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linux/net/netfilter
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Martin KaFai Lau 48e8aa6e31 ipv6: Set FLOWI_FLAG_KNOWN_NH at flowi6_flags 
The neighbor look-up used to depend on the rt6i_gateway (if
there is a gateway) or the rt6i_dst (if it is a RTF_CACHE clone)
as the nexthop address.  Note that rt6i_dst is set to fl6->daddr
for the RTF_CACHE clone where fl6->daddr is the one used to do
the route look-up.

Now, we only create RTF_CACHE clone after encountering exception.
When doing the neighbor look-up with a route that is neither a gateway
nor a RTF_CACHE clone, the daddr in skb will be used as the nexthop.

In some cases, the daddr in skb is not the one used to do
the route look-up.  One example is in ip_vs_dr_xmit_v6() where the
real nexthop server address is different from the one in the skb.

This patch is going to follow the IPv4 approach and ask the
ip6_pol_route() callers to set the FLOWI_FLAG_KNOWN_NH properly.

In the next patch, ip6_pol_route() will honor the FLOWI_FLAG_KNOWN_NH
and create a RTF_CACHE clone.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Tested-by: Julian Anastasov <ja@ssi.bg>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-25 13:25:34 -04:00
..
ipset
netfilter: ipset: deinline ip_set_put_extensions()
2015-05-14 12:51:19 +02:00
ipvs
ipv6: Set FLOWI_FLAG_KNOWN_NH at flowi6_flags
2015-05-25 13:25:34 -04:00
core.c
netfilter: add netfilter ingress hook after handle_ing() under unique static key
2015-05-14 01:10:05 -04:00
Kconfig
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-05-23 01:22:35 -04:00
Makefile
netfilter: nf_tables: add support for dynamic set updates
2015-04-08 16:58:27 +02:00
nf_conntrack_acct.c
netfilter: Remove uses of seq_<foo> return values
2015-03-18 10:51:35 +01:00
nf_conntrack_amanda.c
net: Remove state argument from skb_find_text()
2015-02-22 15:59:54 -05:00
nf_conntrack_broadcast.c
…
nf_conntrack_core.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
2015-01-15 01:50:25 -05:00
nf_conntrack_ecache.c
netfilter: conntrack: remove timer from ecache extension
2014-06-25 19:15:38 +02:00
nf_conntrack_expect.c
netfilter: Remove uses of seq_<foo> return values
2015-03-18 10:51:35 +01:00
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: replace strnicmp with strncasecmp
2014-10-14 02:18:24 +02:00
nf_conntrack_h323_asn1.c
…
nf_conntrack_h323_main.c
ipv6: Remove external dependency on rt6i_gateway and RTF_ANYCAST
2015-05-25 13:25:33 -04:00
nf_conntrack_h323_types.c
…
nf_conntrack_helper.c
netfilter: fix spelling errors
2014-10-30 17:35:30 +01:00
nf_conntrack_irc.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_l3proto_generic.c
netfilter: Convert print_tuple functions to return void
2014-11-05 14:10:33 -05:00
nf_conntrack_labels.c
netfilter: connlabels: remove unneeded includes
2013-07-31 16:39:18 +02:00
nf_conntrack_netbios_ns.c
…
nf_conntrack_netlink.c
netfilter: conntrack: Flush connections with a given mark
2015-01-08 12:14:20 +01:00
nf_conntrack_pptp.c
netfilter: nf_conntrack: flush net_gre->keymap_list only from gre helper
2014-04-08 10:56:12 +02:00
nf_conntrack_proto_dccp.c
netfilter: Convert print_tuple functions to return void
2014-11-05 14:10:33 -05:00
nf_conntrack_proto_generic.c
netfilter: Convert print_tuple functions to return void
2014-11-05 14:10:33 -05:00
nf_conntrack_proto_gre.c
netfilter: Convert print_tuple functions to return void
2014-11-05 14:10:33 -05:00
nf_conntrack_proto_sctp.c
netfilter: Convert print_tuple functions to return void
2014-11-05 14:10:33 -05:00
nf_conntrack_proto_tcp.c
conntrack: RFC5961 challenge ACK confuse conntrack LAST-ACK transition
2015-05-15 20:50:56 +02:00
nf_conntrack_proto_udp.c
netfilter: Convert print_tuple functions to return void
2014-11-05 14:10:33 -05:00
nf_conntrack_proto_udplite.c
netfilter: Convert print_tuple functions to return void
2014-11-05 14:10:33 -05:00
nf_conntrack_proto.c
netfilter: nf_conntrack: remove dead code
2014-01-03 23:41:37 +01:00
nf_conntrack_sane.c
netfilter: nf_ct_helper: better logging for dropped packets
2013-02-19 02:48:05 +01:00
nf_conntrack_seqadj.c
netfilter: nf_ct_seqadj: print ack seq in the right host byte order
2015-01-05 13:52:20 +01:00
nf_conntrack_sip.c
netfilter: replace strnicmp with strncasecmp
2014-10-14 02:18:24 +02:00
nf_conntrack_snmp.c
netfilter: nf_ct_snmp: add include file
2013-01-18 00:28:18 +01:00
nf_conntrack_standalone.c
netfilter: Remove checks of seq_printf() return values
2014-11-05 14:11:02 -05:00
nf_conntrack_tftp.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_timeout.c
netfilter: nf_ct_timeout: move initialization out of pernet_operations
2013-01-23 12:56:02 +01:00
nf_conntrack_timestamp.c
netfilter: nf_ct_timestamp: Fix BUG_ON after netns deletion
2013-12-20 14:58:29 +01:00
nf_internals.h
netfilter: Create and use nf_hook_state.
2015-04-04 12:17:40 -04:00
nf_log_common.c
netfilter: bridge: add helpers for fetching physin/outdev
2015-04-08 16:49:08 +02:00
nf_log.c
netfilter: restore rule tracing via nfnetlink_log
2015-03-19 11:14:48 +01:00
nf_nat_amanda.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_nat_core.c
net: use reciprocal_scale() helper
2014-08-23 12:21:21 -07:00
nf_nat_ftp.c
netfilter: nf_ct_helper: better logging for dropped packets
2013-02-19 02:48:05 +01:00
nf_nat_helper.c
netfilter: nf_conntrack: make sequence number adjustments usuable without NAT
2013-08-28 00:26:48 +02:00
nf_nat_irc.c
netfilter: nf_nat: fix access to uninitialized buffer in IRC NAT helper
2014-01-06 14:17:17 +01:00
nf_nat_proto_common.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_dccp.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_sctp.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_tcp.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_udp.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_udplite.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_unknown.c
netfilter: add protocol independent NAT core
2012-08-30 03:00:14 +02:00
nf_nat_redirect.c
netfilter: combine IPv4 and IPv6 nf_nat_redirect code in one module
2014-11-27 13:08:42 +01:00
nf_nat_sip.c
netfilter: replace strnicmp with strncasecmp
2014-10-14 02:18:24 +02:00
nf_nat_tftp.c
netfilter: nf_ct_helper: better logging for dropped packets
2013-02-19 02:48:05 +01:00
nf_queue.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2015-04-08 18:30:21 +02:00
nf_sockopt.c
netfilter: don't use mutex_lock_interruptible()
2014-08-08 16:47:23 +02:00
nf_synproxy_core.c
netfilter: nf_conntrack: don't release a conntrack with non-zero refcnt
2014-02-05 17:46:06 +01:00
nf_tables_api.c
netfilter: nf_tables: fix bogus warning in nft_data_uninit()
2015-05-15 22:07:30 +02:00
nf_tables_core.c
netfilter: nf_tables: switch registers to 32 bit addressing
2015-04-13 17:17:29 +02:00
nf_tables_inet.c
netfilter: nf_tables: fix error path in the init functions
2014-01-09 23:25:48 +01:00
nfnetlink_acct.c
netfilter: nfnetlink_acct: add filter support to nfacct counter list/reset
2014-08-26 21:36:19 +02:00
nfnetlink_cthelper.c
netfilter: Zero the tuple in nfnl_cthelper_parse_tuple()
2015-03-12 13:07:36 +01:00
nfnetlink_cttimeout.c
netfilter: cttimeout: allow to set/get default protocol timeouts
2013-10-01 13:17:39 +02:00
nfnetlink_log.c
netfilter: nfnetlink_{log,queue}: Register pernet in first place
2015-05-20 13:46:48 +02:00
nfnetlink_queue_core.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-05-23 01:22:35 -04:00
nfnetlink_queue_ct.c
netfilter: nf_conntrack: make sequence number adjustments usuable without NAT
2013-08-28 00:26:48 +02:00
nfnetlink.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
2015-01-15 01:50:25 -05:00
nft_bitwise.c
netfilter: nf_tables: support variable sized data in nft_data_init()
2015-04-13 17:17:30 +02:00
nft_byteorder.c
netfilter: nf_tables: switch registers to 32 bit addressing
2015-04-13 17:17:29 +02:00
nft_cmp.c
netfilter: nf_tables: support variable sized data in nft_data_init()
2015-04-13 17:17:30 +02:00
nft_compat.c
netfilter: x_tables: add context to know if extension runs from nft_compat
2015-05-15 20:14:07 +02:00
nft_counter.c
netfilter: nf_tables: mark stateful expressions
2015-04-13 20:12:31 +02:00
nft_ct.c
netfilter: nf_tables: switch registers to 32 bit addressing
2015-04-13 17:17:29 +02:00
nft_dynset.c
netfilter: nft_dynset: dynamic stateful expression instantiation
2015-04-13 20:19:55 +02:00
nft_exthdr.c
netfilter: nf_tables: switch registers to 32 bit addressing
2015-04-13 17:17:29 +02:00
nft_hash.c
netfilter: nf_tables: variable sized set element keys / data
2015-04-13 17:17:31 +02:00
nft_immediate.c
netfilter: nf_tables: support variable sized data in nft_data_init()
2015-04-13 17:17:30 +02:00
nft_limit.c
netfilter: nf_tables: mark stateful expressions
2015-04-13 20:12:31 +02:00
nft_log.c
netfilter: nf_tables: get rid of NFT_REG_VERDICT usage
2015-04-13 17:17:07 +02:00
nft_lookup.c
netfilter: nf_tables: add flag to indicate set contains expressions
2015-04-13 20:12:32 +02:00
nft_masq.c
netfilter: nf_tables: validate hooks in NAT expressions
2015-01-19 14:52:39 +01:00
nft_meta.c
netfilter: nf_tables: switch registers to 32 bit addressing
2015-04-13 17:17:29 +02:00
nft_nat.c
netfilter: nf_tables: switch registers to 32 bit addressing
2015-04-13 17:17:29 +02:00
nft_payload.c
netfilter: nf_tables: switch registers to 32 bit addressing
2015-04-13 17:17:29 +02:00
nft_queue.c
netfilter: nf_tables: get rid of NFT_REG_VERDICT usage
2015-04-13 17:17:07 +02:00
nft_rbtree.c
netfilter: nf_tables: variable sized set element keys / data
2015-04-13 17:17:31 +02:00
nft_redir.c
netfilter: nf_tables: add register parsing/dumping helpers
2015-04-13 17:17:28 +02:00
nft_reject_inet.c
netfilter; Add some missing default cases to switch statements in nft_reject.
2015-04-27 13:20:34 -04:00
nft_reject.c
netfilter; Add some missing default cases to switch statements in nft_reject.
2015-04-27 13:20:34 -04:00
x_tables.c
netfilter: Use correct return for seq_show functions
2015-05-17 17:25:35 +02:00
xt_addrtype.c
ipv6: Remove external dependency on rt6i_gateway and RTF_ANYCAST
2015-05-25 13:25:33 -04:00
xt_AUDIT.c
netfilter: Convert uses of __constant_<foo> to <foo>
2014-03-13 14:13:19 +01:00
xt_bpf.c
net: filter: split 'struct sk_filter' into socket and bpf parts
2014-08-02 15:03:58 -07:00
xt_cgroup.c
netfilter: x_tables: fix cgroup matching on non-full sks
2015-04-01 11:26:42 +02:00
xt_CHECKSUM.c
…
xt_CLASSIFY.c
…
xt_cluster.c
net: use reciprocal_scale() helper
2014-08-23 12:21:21 -07:00
xt_comment.c
…
xt_connbytes.c
netfilter: Convert pr_warning to pr_warn
2014-09-10 12:40:10 -07:00
xt_connlabel.c
netfilter: add connlabel conntrack extension
2013-01-18 00:28:15 +01:00
xt_connlimit.c
netfilter: xt_connlimit: honor conntrack zone if available
2014-11-17 12:44:20 +01:00
xt_connmark.c
netfilter: Fix FSF address in file headers
2013-12-06 12:37:57 -05:00
xt_CONNSECMARK.c
…
xt_conntrack.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
xt_cpu.c
…
xt_CT.c
netfilter: nf_conntrack: don't release a conntrack with non-zero refcnt
2014-02-05 17:46:06 +01:00
xt_dccp.c
…
xt_devgroup.c
…
xt_dscp.c
…
xt_DSCP.c
netfilter: fix various sparse warnings
2014-11-13 12:14:42 +01:00
xt_ecn.c
netfilter: xtables: collapse conditions in xt_ecn
2011-12-27 20:45:25 +01:00
xt_esp.c
…
xt_hashlimit.c
netfilter: Remove checks of seq_printf() return values
2014-11-05 14:11:02 -05:00
xt_helper.c
…
xt_hl.c
…
xt_HL.c
…
xt_HMARK.c
net: use reciprocal_scale() helper
2014-08-23 12:21:21 -07:00
xt_IDLETIMER.c
netfilter: Remove unnecessary OOM logging messages
2011-11-01 09:19:49 +01:00
xt_ipcomp.c
netfilter: xt_ipcomp: Use ntohs to ease sparse warning
2014-02-19 11:41:25 +01:00
xt_iprange.c
…
xt_ipvs.c
ipvs: API change to avoid rescan of IPv6 exthdr
2012-09-28 11:34:33 +09:00
xt_l2tp.c
netfilter: introduce l2tp match extension
2014-01-09 21:36:39 +01:00
xt_LED.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-08-05 18:46:26 -07:00
xt_length.c
…
xt_limit.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
xt_LOG.c
netfilter: xt_LOG: add missing string format in nf_log_packet()
2014-06-28 18:50:35 +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: xt_MARK: Add ARP support
2015-05-14 13:00:27 +02:00
xt_multiport.c
…
xt_nat.c
netfilter: xt_nat: fix incorrect hooks for SNAT and DNAT targets
2012-10-15 13:39:12 +02:00
xt_NETMAP.c
netfilter: combine ipt_NETMAP and ip6t_NETMAP
2012-09-21 12:11:08 +02:00
xt_nfacct.c
netfilter: nfnetlink_acct: Adding quota support to accounting framework
2014-04-29 18:25:14 +02:00
xt_NFLOG.c
netfilter: log: netns NULL ptr bug when calling from conntrack
2013-05-15 14:11:07 +02:00
xt_NFQUEUE.c
netfilter: xt_NFQUEUE: separate reusable code
2013-12-07 23:20:45 +01:00
xt_osf.c
netfilter: xt_osf: Use continue to reduce indentation
2014-12-23 14:20:10 +01:00
xt_owner.c
userns: xt_owner: Add basic user namespace support.
2012-08-14 21:55:30 -07:00
xt_physdev.c
netfilter: physdev: use helpers
2015-04-08 16:49:09 +02:00
xt_pkttype.c
…
xt_policy.c
…
xt_quota.c
net: Fix files explicitly needing to include module.h
2011-10-31 19:30:28 -04:00
xt_rateest.c
net_sched: add 64bit rate estimators
2013-06-11 02:51:03 -07:00
xt_RATEEST.c
net: sched: make bstats per cpu and estimator RCU safe
2014-09-30 01:02:26 -04:00
xt_realm.c
…
xt_recent.c
netfilter: xt_recent: don't reject rule if new hitcount exceeds table max
2015-02-16 17:00:47 +01:00
xt_REDIRECT.c
netfilter: combine IPv4 and IPv6 nf_nat_redirect code in one module
2014-11-27 13:08:42 +01:00
xt_repldata.h
net: netfilter: LLVMLinux: vlais-netfilter
2014-06-07 11:44:39 -07:00
xt_sctp.c
…
xt_SECMARK.c
…
xt_set.c
netfilter: ipset: Use better include files in xt_set.c
2015-05-13 18:21:13 +02:00
xt_socket.c
netfilter: x_tables: don't extract flow keys on early demuxed sks in socket match
2015-04-08 16:47:49 +02:00
xt_state.c
…
xt_statistic.c
net: replace macros net_random and net_srandom with direct calls to prandom
2014-01-14 15:15:25 -08:00
xt_string.c
net: Remove state argument from skb_find_text()
2015-02-22 15:59:54 -05:00
xt_tcpmss.c
…
xt_TCPMSS.c
netfilter: x_tables: add context to know if extension runs from nft_compat
2015-05-15 20:14:07 +02:00
xt_TCPOPTSTRIP.c
netfilter: xt_TCPOPTSTRIP: fix possible off by one access
2013-08-01 11:45:15 +02:00
xt_tcpudp.c
…
xt_TEE.c
ipv6: Set FLOWI_FLAG_KNOWN_NH at flowi6_flags
2015-05-25 13:25:34 -04:00
xt_time.c
netfilter: xt_time: add support to ignore day transition
2012-09-24 14:29:01 +02:00
xt_TPROXY.c
tcp/dccp: get rid of central timewait timer
2015-04-13 16:40:05 -04:00
xt_TRACE.c
…
xt_u32.c
…