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kernel-fxtec-pro1x/net/netfilter
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Eric Dumazet 7f5c6d4f66 netfilter: get rid of atomic ops in fast path 
We currently use a percpu spinlock to 'protect' rule bytes/packets
counters, after various attempts to use RCU instead.

Lately we added a seqlock so that get_counters() can run without
blocking BH or 'writers'. But we really only need the seqcount in it.

Spinlock itself is only locked by the current/owner cpu, so we can
remove it completely.

This cleanups api, using correct 'writer' vs 'reader' semantic.

At replace time, the get_counters() call makes sure all cpus are done
using the old table.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-04-04 17:04:03 +02:00
..
ipset netfilter: ipset: fix checking the type revision at create command 2011-03-20 15:35:01 +01:00
ipvs IPVS: Use global mutex in ip_vs_app.c 2011-03-21 20:39:24 -07:00
core.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-02-19 19:17:35 -08:00
Kconfig netfilter: xt_addrtype: ipv6 support 2011-03-15 20:17:44 +01:00
Makefile netfilter: ipt_addrtype: rename to xt_addrtype 2011-03-15 20:16:20 +01:00
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_broadcast.c netfilter: nf_conntrack: nf_conntrack snmp helper 2011-01-18 18:12:24 +01:00
nf_conntrack_core.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2011-03-15 13:03:27 -07:00
nf_conntrack_ecache.c netfilter: ecache: always set events bits, filter them later 2011-02-01 16:06:30 +01:00
nf_conntrack_expect.c netfilter: nf_conntrack: use is_vmalloc_addr() 2011-01-14 15:45:56 +01:00
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 netfilter: Use flowi4 and flowi6 in nf_conntrack_h323_main 2011-03-12 15:08:51 -08:00
nf_conntrack_h323_types.c
nf_conntrack_helper.c netfilter: nf_conntrack: use is_vmalloc_addr() 2011-01-14 15:45:56 +01:00
nf_conntrack_irc.c netfilter: cleanup printk messages 2010-05-13 15:02:08 +02:00
nf_conntrack_l3proto_generic.c [NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_l3proto 2008-04-14 11:15:52 +02:00
nf_conntrack_netbios_ns.c netfilter: nf_conntrack: nf_conntrack snmp helper 2011-01-18 18:12:24 +01:00
nf_conntrack_netlink.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-02-04 14:28:58 -08:00
nf_conntrack_pptp.c netfilter: nf_conntrack: add support for "conntrack zones" 2010-02-15 18:13:33 +01:00
nf_conntrack_proto.c netfilter: rcu sparse cleanups 2010-11-15 19:45:13 +01:00
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 sysctl net: Remove unused binary sysctl code 2009-11-12 02:05:06 -08:00
nf_conntrack_proto_gre.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
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_ct_tcp: fix out of sync scenario while in SYN_RECV 2011-02-28 18:02:33 +01:00
nf_conntrack_proto_udp.c netfilter: nf_conntrack: pass template to l4proto ->error() handler 2010-02-15 17:45:08 +01:00
nf_conntrack_proto_udplite.c netfilter: nf_conntrack: pass template to l4proto ->error() handler 2010-02-15 17:45:08 +01:00
nf_conntrack_sane.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
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_snmp.c netfilter: nf_conntrack: nf_conntrack snmp helper 2011-01-18 18:12:24 +01:00
nf_conntrack_standalone.c netfilter: nf_conntrack: fix lifetime display for disabled connections 2011-01-19 19:10:49 +01:00
nf_conntrack_tftp.c netfilter: cleanup printk messages 2010-05-13 15:02:08 +02:00
nf_conntrack_timestamp.c netfilter: nf_conntrack_tstamp: add flow-based timestamp extension 2011-01-19 16:00:07 +01:00
nf_internals.h netfilter: cleanup printk messages 2010-05-13 15:02:08 +02:00
nf_log.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-03-03 21:27:42 -08:00
nf_queue.c netfilter: allow NFQUEUE bypass if no listener is available 2011-01-18 16:08:30 +01:00
nf_sockopt.c net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
nf_tproxy_core.c netfilter: tproxy: do not assign timewait sockets to skb->sk 2011-02-17 11:32:38 +01:00
nfnetlink.c netfilter: cleanup printk messages 2010-05-13 15:02:08 +02:00
nfnetlink_log.c netfilter: nfnetlink_log: remove unused parameter 2011-02-15 21:59:37 +01:00
nfnetlink_queue.c netfilter: nfnetlink_queue: return error number to caller 2011-01-18 15:27:28 +01:00
x_tables.c netfilter: get rid of atomic ops in fast path 2011-04-04 17:04:03 +02:00
xt_addrtype.c netfilter: xt_addrtype: ipv6 support 2011-03-15 20:17:44 +01:00
xt_AUDIT.c netfilter ebtables: fix xt_AUDIT to work with ebtables 2011-03-16 18:32:13 +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: xt_connlimit: remove connlimit_rnd_inited 2011-03-15 13:26:32 +01:00
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: warn about use in raw table 2011-02-14 17:28:55 +01:00
xt_cpu.c netfilter: xtables: add missing aliases for autoloading via iptables 2011-01-18 06:33:54 +01:00
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_devgroup.c netfilter: xtables: add device group match 2011-02-03 00:05:43 +01:00
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: xtables: add missing aliases for autoloading via iptables 2011-01-18 06:33:54 +01:00
xt_iprange.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-02-04 14:28:58 -08:00
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: add missing aliases for autoloading via iptables 2011-01-18 06:33:54 +01:00
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: allow NFQUEUE bypass if no listener is available 2011-01-18 16:08:30 +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 netfilter: xtables: generate initial table on-demand 2010-02-10 17:50:47 +01:00
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_set.c netfilter: xtables: "set" match and "SET" target support 2011-02-01 15:56:00 +01:00
xt_socket.c netfilter: tproxy: do not assign timewait sockets to skb->sk 2011-02-17 11:32:38 +01:00
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: Use flowi4 and flowi6 in xt_TCPMSS 2011-03-12 15:08:51 -08:00
xt_tcpmss.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
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 ipv6: Convert to use flowi6 where applicable. 2011-03-12 15:08:54 -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: tproxy: do not assign timewait sockets to skb->sk 2011-02-17 11:32:38 +01:00
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