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linux-sg2042/include/linux/netfilter
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Eric Dumazet 83723d6071 netfilter: x_tables: dont block BH while reading counters 
Using "iptables -L" with a lot of rules have a too big BH latency.
Jesper mentioned ~6 ms and worried of frame drops.

Switch to a per_cpu seqlock scheme, so that taking a snapshot of
counters doesnt need to block BH (for this cpu, but also other cpus).

This adds two increments on seqlock sequence per ipt_do_table() call,
its a reasonable cost for allowing "iptables -L" not block BH
processing.

Reported-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McHardy <kaber@trash.net>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 		2011-01-10 20:11:38 +01:00
..
Kbuild include: replace unifdef-y with header-y 2010-08-14 22:26:51 +02:00
nf_conntrack_amanda.h
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nf_conntrack_common.h netfilter: ctnetlink: add expectation deletion events 2010-10-19 10:19:06 +02:00
nf_conntrack_dccp.h
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nf_conntrack_ftp.h net: cleanup include/linux 2009-11-04 09:50:58 -08:00
nf_conntrack_h323.h
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nf_conntrack_h323_asn1.h
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nf_conntrack_h323_types.h
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nf_conntrack_irc.h
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nf_conntrack_pptp.h
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nf_conntrack_proto_gre.h
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nf_conntrack_sane.h
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nf_conntrack_sctp.h net: cleanup include/linux 2009-11-04 09:50:58 -08:00
nf_conntrack_sip.h netfilter: nf_conntrack_sip: Add callid parser 2010-10-04 22:45:23 +09:00
nf_conntrack_tcp.h Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2009-12-03 13:23:12 -08:00
nf_conntrack_tftp.h
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nf_conntrack_tuple_common.h netfilter: include/linux/netfilter/nf_conntrack_tuple_common.h: Checkpatch cleanup 2010-03-08 13:13:07 +01:00
nfnetlink.h netfilter: ctnetlink: fix reliable event delivery if message building fails 2010-03-20 14:29:03 -07:00
nfnetlink_compat.h net: cleanup include/linux 2009-11-04 09:50:58 -08:00
nfnetlink_conntrack.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-10-23 11:47:02 -07:00
nfnetlink_log.h nfnetlink_log: do not expose NFULNL_COPY_DISABLED to user-space 2010-07-15 11:27:41 +02:00
nfnetlink_queue.h
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x_tables.h netfilter: x_tables: dont block BH while reading counters 2011-01-10 20:11:38 +01:00
xt_CHECKSUM.h netfilter: correct CHECKSUM header and export it 2010-07-16 14:08:20 +02:00
xt_CLASSIFY.h
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xt_CONNMARK.h netfilter: xtables: merge xt_CONNMARK into xt_connmark 2010-03-17 15:48:36 +01:00
xt_CONNSECMARK.h
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xt_CT.h netfilter: nf_conntrack: add support for "conntrack zones" 2010-02-15 18:13:33 +01:00
xt_DSCP.h
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xt_IDLETIMER.h header: fix broken headers for user space 2010-08-22 21:15:39 -07:00
xt_LED.h netfilter: add missing linux/types.h include to xt_LED.h 2009-05-05 14:31:12 +02:00
xt_MARK.h netfilter: xtables: merge xt_MARK into xt_mark 2010-03-17 15:48:36 +01:00
xt_NFLOG.h
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xt_NFQUEUE.h netfilter: xt_NFQUEUE: queue balancing support 2009-06-05 13:24:24 +02:00
xt_RATEEST.h
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xt_SECMARK.h secmark: make secmark object handling generic 2010-10-21 10:12:48 +11:00
xt_TCPMSS.h
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xt_TCPOPTSTRIP.h
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xt_TEE.h netfilter: xt_TEE: resolve oif using netdevice notifiers 2010-04-20 15:07:32 +02:00
xt_TPROXY.h tproxy: added IPv6 support to the TPROXY target 2010-10-21 16:17:26 +02:00
xt_cluster.h netfilter: xt_cluster: fix use of cluster match with 32 nodes 2009-05-05 17:46:07 +02:00
xt_comment.h
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xt_connbytes.h net: cleanup include/linux 2009-11-04 09:50:58 -08:00
xt_connlimit.h
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xt_connmark.h netfilter: xtables: merge xt_CONNMARK into xt_connmark 2010-03-17 15:48:36 +01:00
xt_conntrack.h netfilter: xtables: remove xt_conntrack v0 2009-08-10 13:09:44 +02:00
xt_cpu.h netfilter: add xt_cpu match 2010-07-23 12:59:36 +02:00
xt_dccp.h
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xt_dscp.h
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xt_esp.h net: cleanup include/linux 2009-11-04 09:50:58 -08:00
xt_hashlimit.h
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xt_helper.h
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xt_iprange.h
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xt_ipvs.h netfilter: fix userspace header warning 2010-08-18 23:34:26 -07:00
xt_length.h
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xt_limit.h
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xt_mac.h
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xt_mark.h netfilter: xtables: merge xt_MARK into xt_mark 2010-03-17 15:48:36 +01:00
xt_multiport.h net: cleanup include/linux 2009-11-04 09:50:58 -08:00
xt_osf.h netfilter: headers_check fix: linux/netfilter/xt_osf.h 2009-06-29 14:28:27 +02:00
xt_owner.h
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xt_physdev.h
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xt_pkttype.h
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xt_policy.h net: cleanup include/linux 2009-11-04 09:50:58 -08:00
xt_quota.h xt_quota: report initial quota value instead of current value to userspace 2010-07-23 14:07:47 +02:00
xt_rateest.h
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xt_realm.h
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xt_recent.h netfilter: xt_recent: check for unsupported user space flags 2010-03-17 16:18:56 +01:00
xt_sctp.h
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xt_socket.h netfilter: xt_socket: added new revision of the 'socket' match supporting flags 2009-06-09 15:16:34 +02:00
xt_state.h net: cleanup include/linux 2009-11-04 09:50:58 -08:00
xt_statistic.h
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xt_string.h net: cleanup include/linux 2009-11-04 09:50:58 -08:00
xt_tcpmss.h
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xt_tcpudp.h net: cleanup include/linux 2009-11-04 09:50:58 -08:00
xt_time.h
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xt_u32.h
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