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Pablo Neira Ayuso 0768b3b3d2 netfilter: nf_tables: add optional user data area to rules 
This allows us to store user comment strings, but it could be also
used to store any kind of information that the user application needs
to link to the rule.

Scratch 8 bits for the new ulen field that indicates the length the
user data area. 4 bits from the handle (so it's 42 bits long, according
to Patrick, it would last 139 years with 1000 new rules per second)
and 4 bits from dlen (so the expression data area is 4K, which seems
sufficient by now even considering the compatibility layer).

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Patrick McHardy <kaber@trash.net>
 		2014-02-27 16:56:00 +01:00
..
ipv4 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nftables 2014-01-06 13:29:30 -05:00
ipv6 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nftables 2014-01-06 13:29:30 -05:00
nf_conntrack.h netfilter: nf_conntrack: don't release a conntrack with non-zero refcnt 2014-02-05 17:46:06 +01:00
nf_conntrack_acct.h netfilter: introduce nf_conn_acct structure 2013-11-03 21:48:49 +01:00
nf_conntrack_core.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_conntrack_ecache.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_conntrack_expect.h netfilter: rename netlink related "pid" variables to "portid" 2013-04-19 14:58:36 -04:00
nf_conntrack_extend.h netfilter: introduce nf_conn_acct structure 2013-11-03 21:48:49 +01:00
nf_conntrack_helper.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_conntrack_l3proto.h netfilter: nf_conntrack: remove dead code 2014-01-03 23:41:37 +01:00
nf_conntrack_l4proto.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_conntrack_labels.h netfilter: nft_ct: labels get support 2014-02-19 11:41:25 +01:00
nf_conntrack_seqadj.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_conntrack_synproxy.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-10-01 17:06:14 -04:00
nf_conntrack_timeout.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_conntrack_timestamp.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_conntrack_tuple.h netfilter: nf_nat: export NAT definitions to userspace 2011-12-23 14:36:43 +01:00
nf_conntrack_zones.h netfilter: nf_defrag_ipv4: fix compilation error with NF_CONNTRACK=n 2010-02-18 19:04:44 +01:00
nf_log.h netfilter: log: netns NULL ptr bug when calling from conntrack 2013-05-15 14:11:07 +02:00
nf_nat.h netfilter: nf_nat: move alloc_null_binding to nf_nat_core.c 2013-10-14 11:29:39 +02:00
nf_nat_core.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_nat_helper.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_nat_l3proto.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_nat_l4proto.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_queue.h netfilter: xt_NFQUEUE: separate reusable code 2013-12-07 23:20:45 +01:00
nf_tables.h netfilter: nf_tables: add optional user data area to rules 2014-02-27 16:56:00 +01:00
nf_tables_core.h nf_tables*.h: Remove extern from function prototypes 2013-10-21 17:19:06 -04:00
nf_tables_ipv4.h netfilter: nft_meta: add l4proto support 2014-01-07 23:57:31 +01:00
nf_tables_ipv6.h netfilter: nft_meta: add l4proto support 2014-01-07 23:57:31 +01:00
nfnetlink_log.h netfilter: log: netns NULL ptr bug when calling from conntrack 2013-05-15 14:11:07 +02:00
nfnetlink_queue.h netfilter: nfnetlink_queue: allow to attach expectations to conntracks 2013-08-13 16:32:10 +02:00
nft_reject.h netfilter: nf_tables: add reject module for NFPROTO_INET 2014-02-06 09:44:18 +01:00
xt_log.h netfilter: xt_LOG: don't use xchg() for simple assignment 2012-03-26 14:00:28 +02:00
xt_rateest.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00