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942e4a2bd6
The x_tables are organized with a table structure and a per-cpu copies of the counters and rules. On older kernels there was a reader/writer lock per table which was a performance bottleneck. In 2.6.30-rc, this was converted to use RCU and the counters/rules which solved the performance problems for do_table but made replacing rules much slower because of the necessary RCU grace period. This version uses a per-cpu set of spinlocks and counters to allow to table processing to proceed without the cache thrashing of a global reader lock and keeps the same performance for table updates. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| arp_tables.c | ||
| arpt_mangle.c | ||
| arptable_filter.c | ||
| ip_queue.c | ||
| ip_tables.c | ||
| ipt_addrtype.c | ||
| ipt_ah.c | ||
| ipt_CLUSTERIP.c | ||
| ipt_ecn.c | ||
| ipt_ECN.c | ||
| ipt_LOG.c | ||
| ipt_MASQUERADE.c | ||
| ipt_NETMAP.c | ||
| ipt_REDIRECT.c | ||
| ipt_REJECT.c | ||
| ipt_ULOG.c | ||
| iptable_filter.c | ||
| iptable_mangle.c | ||
| iptable_raw.c | ||
| iptable_security.c | ||
| Kconfig | ||
| Makefile | ||
| nf_conntrack_l3proto_ipv4_compat.c | ||
| nf_conntrack_l3proto_ipv4.c | ||
| nf_conntrack_proto_icmp.c | ||
| nf_defrag_ipv4.c | ||
| nf_nat_amanda.c | ||
| nf_nat_core.c | ||
| nf_nat_ftp.c | ||
| nf_nat_h323.c | ||
| nf_nat_helper.c | ||
| nf_nat_irc.c | ||
| nf_nat_pptp.c | ||
| nf_nat_proto_common.c | ||
| nf_nat_proto_dccp.c | ||
| nf_nat_proto_gre.c | ||
| nf_nat_proto_icmp.c | ||
| nf_nat_proto_sctp.c | ||
| nf_nat_proto_tcp.c | ||
| nf_nat_proto_udp.c | ||
| nf_nat_proto_udplite.c | ||
| nf_nat_proto_unknown.c | ||
| nf_nat_rule.c | ||
| nf_nat_sip.c | ||
| nf_nat_snmp_basic.c | ||
| nf_nat_standalone.c | ||
| nf_nat_tftp.c | ||