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linux-next/net/ipv6/netfilter
Eric W. Biederman 29a26a5680 netfilter: Pass struct net into the netfilter hooks
Pass a network namespace parameter into the netfilter hooks.  At the
call site of the netfilter hooks the path a packet is taking through
the network stack is well known which allows the network namespace to
be easily and reliabily.

This allows the replacement of magic code like
"dev_net(state->in?:state->out)" that appears at the start of most
netfilter hooks with "state->net".

In almost all cases the network namespace passed in is derived
from the first network device passed in, guaranteeing those
paths will not see any changes in practice.

The exceptions are:
xfrm/xfrm_output.c:xfrm_output_resume()         xs_net(skb_dst(skb)->xfrm)
ipvs/ip_vs_xmit.c:ip_vs_nat_send_or_cont()      ip_vs_conn_net(cp)
ipvs/ip_vs_xmit.c:ip_vs_send_or_cont()          ip_vs_conn_net(cp)
ipv4/raw.c:raw_send_hdrinc()                    sock_net(sk)
ipv6/ip6_output.c:ip6_xmit()			sock_net(sk)
ipv6/ndisc.c:ndisc_send_skb()                   dev_net(skb->dev) not dev_net(dst->dev)
ipv6/raw.c:raw6_send_hdrinc()                   sock_net(sk)
br_netfilter_hooks.c:br_nf_pre_routing_finish() dev_net(skb->dev) before skb->dev is set to nf_bridge->physindev

In all cases these exceptions seem to be a better expression for the
network namespace the packet is being processed in then the historic
"dev_net(in?in:out)".  I am documenting them in case something odd
pops up and someone starts trying to track down what happened.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-17 17:18:37 -07:00
..
ip6_tables.c Revert "netfilter: xtables: compute exact size needed for jumpstack" 2015-08-28 21:04:11 +02:00
ip6t_ah.c netfilter: ip6_tables: add flags parameter to ipv6_find_hdr() 2012-05-09 12:53:47 +02:00
ip6t_eui64.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
ip6t_frag.c netfilter: ip6_tables: add flags parameter to ipv6_find_hdr() 2012-05-09 12:53:47 +02:00
ip6t_hbh.c netfilter: ip6_tables: add flags parameter to ipv6_find_hdr() 2012-05-09 12:53:47 +02:00
ip6t_ipv6header.c netfilter: remove unnecessary break after return 2014-07-15 16:27:00 -07:00
ip6t_MASQUERADE.c netfilter: nf_nat: generalize IPv6 masquerading support for nf_tables 2014-09-09 16:31:29 +02:00
ip6t_mh.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
ip6t_NPT.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-07 18:37:01 -04:00
ip6t_REJECT.c netfilter: ip6t_REJECT: added missing icmpv6 codes 2015-08-26 20:32:35 +02:00
ip6t_rpfilter.c net: ipv6: more places need LOOPBACK_IFINDEX for flowi6_iif 2014-04-28 14:47:03 -04:00
ip6t_rt.c netfilter: ip6_tables: add flags parameter to ipv6_find_hdr() 2012-05-09 12:53:47 +02:00
ip6t_SYNPROXY.c netfilter: reduce sparse warnings 2015-08-28 21:04:12 +02:00
ip6table_filter.c netfilter: Pass nf_hook_state through ip6t_do_table(). 2015-04-04 12:52:06 -04:00
ip6table_mangle.c netfilter: Pass nf_hook_state through ip6t_do_table(). 2015-04-04 12:52:06 -04:00
ip6table_nat.c netfilter: Pass nf_hook_state through ip6t_do_table(). 2015-04-04 12:52:06 -04:00
ip6table_raw.c netfilter: Pass nf_hook_state through ip6t_do_table(). 2015-04-04 12:52:06 -04:00
ip6table_security.c netfilter: Pass nf_hook_state through ip6t_do_table(). 2015-04-04 12:52:06 -04:00
Kconfig netfilter: nf_tables: add nft_dup expression 2015-08-07 11:49:49 +02:00
Makefile netfilter: nf_tables: add nft_dup expression 2015-08-07 11:49:49 +02:00
nf_conntrack_l3proto_ipv6.c netfilter: nf_conntrack: push zone object into functions 2015-08-11 12:29:01 +02:00
nf_conntrack_proto_icmpv6.c netfilter: nf_conntrack: add efficient mark to zone mapping 2015-08-18 01:24:05 +02:00
nf_conntrack_reasm.c ipv6: Export nf_ct_frag6_gather() 2015-08-27 11:40:42 -07:00
nf_defrag_ipv6_hooks.c netfilter: Pass struct net into the netfilter hooks 2015-09-17 17:18:37 -07:00
nf_dup_ipv6.c netfilter: nf_dup{4, 6}: fix build error when nf_conntrack disabled 2015-09-02 16:28:06 -07:00
nf_log_ipv6.c netfilter: Use LOGLEVEL_<FOO> defines 2015-03-25 12:09:39 +01:00
nf_nat_l3proto_ipv6.c net: Change pseudohdr argument of inet_proto_csum_replace* to be a bool 2015-08-17 21:33:06 -07:00
nf_nat_masquerade_ipv6.c netfilter: nf_nat: generalize IPv6 masquerading support for nf_tables 2014-09-09 16:31:29 +02:00
nf_nat_proto_icmpv6.c net: Change pseudohdr argument of inet_proto_csum_replace* to be a bool 2015-08-17 21:33:06 -07:00
nf_reject_ipv6.c netfilter: bridge: add helpers for fetching physin/outdev 2015-04-08 16:49:08 +02:00
nf_tables_ipv6.c netfilter: Pass nf_hook_state through nft_set_pktinfo*(). 2015-04-04 12:54:27 -04:00
nft_chain_nat_ipv6.c netfilter: Pass nf_hook_state through nft_set_pktinfo*(). 2015-04-04 12:54:27 -04:00
nft_chain_route_ipv6.c netfilter: Pass nf_hook_state through nft_set_pktinfo*(). 2015-04-04 12:54:27 -04:00
nft_dup_ipv6.c netfilter: nf_tables: add nft_dup expression 2015-08-07 11:49:49 +02:00
nft_masq_ipv6.c netfilter: nf_tables: get rid of NFT_REG_VERDICT usage 2015-04-13 17:17:07 +02:00
nft_redir_ipv6.c netfilter: nf_tables: switch registers to 32 bit addressing 2015-04-13 17:17:29 +02:00
nft_reject_ipv6.c netfilter: nf_tables: get rid of NFT_REG_VERDICT usage 2015-04-13 17:17:07 +02:00