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kernel-tenderloin-3.0/net/netfilter
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Eric Dumazet 255d0dc340 netfilter: x_table: speedup compat operations 
One iptables invocation with 135000 rules takes 35 seconds of cpu time
on a recent server, using a 32bit distro and a 64bit kernel.

We eventually trigger NMI/RCU watchdog.

INFO: rcu_sched_state detected stall on CPU 3 (t=6000 jiffies)

COMPAT mode has quadratic behavior and consume 16 bytes of memory per
rule.

Switch the xt_compat algos to use an array instead of list, and use a
binary search to locate an offset in the sorted array.

This halves memory need (8 bytes per rule), and removes quadratic
behavior [ O(N*N) -> O(N*log2(N)) ]

Time of iptables goes from 35 s to 150 ms.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-01-13 12:05:12 +01:00
..
ipvs
IPVS: netns, final patch enabling network name space.
2011-01-13 10:30:29 +09:00
core.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 into HEAD
2011-01-13 10:29:21 +09:00
Kconfig
netfilter: fix module dependency issues with IPv6 defragmentation, ip6tables and xt_TPROXY
2010-10-25 13:58:36 -07:00
Makefile
netfilter: add xt_cpu match
2010-07-23 12:59:36 +02:00
nf_conntrack_acct.c
netfilter: complete the deprecation of CONFIG_NF_CT_ACCT
2010-06-25 14:46:56 +02:00
nf_conntrack_amanda.c
netfilter: cleanup printk messages
2010-05-13 15:02:08 +02:00
nf_conntrack_core.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 into HEAD
2011-01-13 10:29:21 +09:00
nf_conntrack_ecache.c
net/netfilter: __rcu annotations
2010-08-19 17:18:01 -07:00
nf_conntrack_expect.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 into HEAD
2011-01-13 10:29:21 +09:00
nf_conntrack_extend.c
netfilter: rcu sparse cleanups
2010-11-15 19:45:13 +01:00
nf_conntrack_ftp.c
netfilter: cleanup printk messages
2010-05-13 15:02:08 +02:00
nf_conntrack_h323_asn1.c
…
nf_conntrack_h323_main.c
net-next: remove useless union keyword
2010-06-10 23:31:35 -07:00
nf_conntrack_h323_types.c
…
nf_conntrack_helper.c
netfilter: rcu sparse cleanups
2010-11-15 19:45:13 +01:00
nf_conntrack_irc.c
netfilter: cleanup printk messages
2010-05-13 15:02:08 +02:00
nf_conntrack_l3proto_generic.c
…
nf_conntrack_netbios_ns.c
net-next: remove useless union keyword
2010-06-10 23:31:35 -07:00
nf_conntrack_netlink.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 into HEAD
2011-01-13 10:29:21 +09:00
nf_conntrack_pptp.c
…
nf_conntrack_proto_dccp.c
netfilter: nf_conntrack: don't always initialize ct->proto
2010-11-12 17:33:17 +01:00
nf_conntrack_proto_generic.c
…
nf_conntrack_proto_gre.c
…
nf_conntrack_proto_sctp.c
netfilter: nf_conntrack: don't always initialize ct->proto
2010-11-12 17:33:17 +01:00
nf_conntrack_proto_tcp.c
netfilter: nf_conntrack: don't always initialize ct->proto
2010-11-12 17:33:17 +01:00
nf_conntrack_proto_udp.c
…
nf_conntrack_proto_udplite.c
…
nf_conntrack_proto.c
netfilter: rcu sparse cleanups
2010-11-15 19:45:13 +01:00
nf_conntrack_sane.c
…
nf_conntrack_sip.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2010-10-21 08:21:34 -07:00
nf_conntrack_standalone.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 into HEAD
2011-01-13 10:29:21 +09:00
nf_conntrack_tftp.c
netfilter: cleanup printk messages
2010-05-13 15:02:08 +02:00
nf_internals.h
netfilter: cleanup printk messages
2010-05-13 15:02:08 +02:00
nf_log.c
netfilter: add __rcu annotations
2010-11-15 18:17:21 +01:00
nf_queue.c
netfilter: add __rcu annotations
2010-11-15 18:17:21 +01:00
nf_sockopt.c
…
nf_tproxy_core.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2010-10-21 08:21:34 -07:00
nfnetlink_log.c
netfilter: add __rcu annotations
2010-11-15 18:17:21 +01:00
nfnetlink_queue.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2010-06-15 13:49:24 -07:00
nfnetlink.c
netfilter: cleanup printk messages
2010-05-13 15:02:08 +02:00
x_tables.c
netfilter: x_table: speedup compat operations
2011-01-13 12:05:12 +01:00
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_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
netfilter: xt_connbytes: Force CT accounting to be enabled
2010-06-25 14:44:07 +02:00
xt_connlimit.c
netfilter: xtables: change hotdrop pointer to direct modification
2010-05-11 18:35:27 +02:00
xt_connmark.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_CONNSECMARK.c
netfilter: xtables: substitute temporary defines by final name
2010-05-11 18:31:17 +02:00
xt_conntrack.c
netfilter: xt_conntrack: support matching on port ranges
2011-01-13 12:05:12 +01:00
xt_cpu.c
netfilter: add xt_cpu match
2010-07-23 12:59:36 +02:00
xt_CT.c
secmark: make secmark object handling generic
2010-10-21 10:12:48 +11:00
xt_dccp.c
netfilter: xtables: change hotdrop pointer to direct modification
2010-05-11 18:35:27 +02:00
xt_dscp.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_DSCP.c
netfilter: xtables: substitute temporary defines by final name
2010-05-11 18:31:17 +02:00
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 proto_ports_offset() to support AH message
2010-08-19 17:16:25 -07:00
xt_helper.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_hl.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_HL.c
netfilter: xtables: substitute temporary defines by final name
2010-05-11 18:31:17 +02:00
xt_IDLETIMER.c
netfilter: xt_IDLETIMER needs kdev_t.h
2010-06-22 08:13:31 +02:00
xt_iprange.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_ipvs.c
IPVS: netns, use ip_vs_proto_data as param.
2011-01-13 10:30:27 +09:00
xt_LED.c
netfilter: xtables: substitute temporary defines by final name
2010-05-11 18:31:17 +02:00
xt_length.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_limit.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_mac.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
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_NFLOG.c
netfilter: xtables: substitute temporary defines by final name
2010-05-11 18:31:17 +02:00
xt_NFQUEUE.c
netfilter: xt_NFQUEUE: remove modulo operations
2010-11-12 17:34:17 +01:00
xt_NOTRACK.c
netfilter: nf_conntrack: IPS_UNTRACKED bit
2010-06-08 16:09:52 +02:00
xt_osf.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_owner.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
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
xt_quota: report initial quota value instead of current value to userspace
2010-07-23 14:07:47 +02:00
xt_rateest.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_RATEEST.c
pkt_sched: gen_kill_estimator() rcu fixes
2010-06-11 18:37:08 -07:00
xt_realm.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_recent.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
xt_repldata.h
…
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_SECMARK.c
secmark: make secmark object handling generic
2010-10-21 10:12:48 +11:00
xt_socket.c
netfilter: xt_socket: Make tproto signed in socket_mt6_v1().
2010-10-28 12:59:53 -07:00
xt_state.c
netfilter: nf_conntrack: IPS_UNTRACKED bit
2010-06-08 16:09:52 +02:00
xt_statistic.c
netfilter: xt_statistic: remove nth_lock spinlock
2010-06-01 12:00:41 +02:00
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_TCPMSS.c
tcp: unify tcp flag macros
2010-06-15 11:56:19 -07:00
xt_TCPOPTSTRIP.c
netfilter: xtables: substitute temporary defines by final name
2010-05-11 18:31:17 +02:00
xt_tcpudp.c
netfilter: xtables: change hotdrop pointer to direct modification
2010-05-11 18:35:27 +02:00
xt_TEE.c
net: use the macros defined for the members of flowi
2010-11-17 12:27:45 -08:00
xt_time.c
netfilter: remove unnecessary returns from void function()s
2010-05-13 15:16:27 +02:00
xt_TPROXY.c
netfilter: fix module dependency issues with IPv6 defragmentation, ip6tables and xt_TPROXY
2010-10-25 13:58:36 -07:00
xt_TRACE.c
netfilter: xtables: substitute temporary defines by final name
2010-05-11 18:31:17 +02:00
xt_u32.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00