Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Neil Horman 1080d709fb net: implement emergency route cache rebulds when gc_elasticity is exceeded ... This is a patch to provide on demand route cache rebuilding. Currently, our route cache is rebulid periodically regardless of need. This introduced unneeded periodic latency. This patch offers a better approach. Using code provided by Eric Dumazet, we compute the standard deviation of the average hash bucket chain length while running rt_check_expire. Should any given chain length grow to larger that average plus 4 standard deviations, we trigger an emergency hash table rebuild for that net namespace. This allows for the common case in which chains are well behaved and do not grow unevenly to not incur any latency at all, while those systems (which may be being maliciously attacked), only rebuild when the attack is detected. This patch take 2 other factors into account: 1) chains with multiple entries that differ by attributes that do not affect the hash value are only counted once, so as not to unduly bias system to rebuilding if features like QOS are heavily used 2) if rebuilding crosses a certain threshold (which is adjustable via the added sysctl in this patch), route caching is disabled entirely for that net namespace, since constant rebuilding is less efficient that no caching at all Tested successfully by me. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2008-10-27 17:06:14 -07:00
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netfilter	netfilter: snmp nat leaks memory in case of failure	2008-10-20 03:33:24 -07:00
af_inet.c	ipv4: Allow binding to non-local addresses if IP_TRANSPARENT is set	2008-10-01 07:31:24 -07:00
ah4.c
arp.c	netfilter: replace old NF_ARP calls with NFPROTO_ARP	2008-10-20 03:34:51 -07:00
cipso_ipv4.c	cipso: Add support for native local labeling and fixup mapping names	2008-10-10 10:16:34 -04:00
datagram.c
devinet.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2008-10-17 08:58:52 -07:00
esp4.c	ipsec: Interfamily IPSec BEET	2008-08-06 02:39:30 -07:00
fib_frontend.c
fib_hash.c
fib_lookup.h
fib_rules.c
fib_semantics.c
fib_trie.c	proc: consolidate per-net single-release callers	2008-07-18 04:07:44 -07:00
icmp.c	net: Rationalise email address: Network Specific Parts	2008-10-13 19:01:08 -07:00
igmp.c	net: Rationalise email address: Network Specific Parts	2008-10-13 19:01:08 -07:00
inet_connection_sock.c	inet: cleanup of local_port_range	2008-10-08 14:18:04 -07:00
inet_diag.c	net: Remove CONFIG_KMOD from net/ (towards removing CONFIG_KMOD entirely)	2008-10-16 15:24:51 -07:00
inet_fragment.c	net: convert BUG_TRAP to generic WARN_ON	2008-07-25 21:43:18 -07:00
inet_hashtables.c	net: convert BUG_TRAP to generic WARN_ON	2008-07-25 21:43:18 -07:00
inet_lro.c
inet_timewait_sock.c	ipv4: Implement IP_TRANSPARENT socket option	2008-10-01 07:30:02 -07:00
inetpeer.c
ip_forward.c
ip_fragment.c	net: Rationalise email address: Network Specific Parts	2008-10-13 19:01:08 -07:00
ip_gre.c	gre: Initialise rtnl_link tunnel parameters properly	2008-10-11 12:20:15 -07:00
ip_input.c	net: Rationalise email address: Network Specific Parts	2008-10-13 19:01:08 -07:00
ip_options.c	cipso: Add support for native local labeling and fixup mapping names	2008-10-10 10:16:34 -04:00
ip_output.c	ipv4: Make Netfilter's ip_route_me_harder() non-local address compatible	2008-10-01 07:44:42 -07:00
ip_sockglue.c	ipv4: Implement IP_TRANSPARENT socket option	2008-10-01 07:30:02 -07:00
ipcomp.c	ipcomp: Fix warnings after ipcomp consolidation.	2008-07-27 03:59:24 -07:00
ipconfig.c	netns: Use net_eq() to compare net-namespaces for optimization.	2008-07-19 22:34:43 -07:00
ipip.c	net: Rationalise email address: Network Specific Parts	2008-10-13 19:01:08 -07:00
ipmr.c	net: Rationalise email address: Network Specific Parts	2008-10-13 19:01:08 -07:00
Kconfig	IPVS: Move IPVS to net/netfilter/ipvs	2008-10-07 08:38:24 +11:00
Makefile	IPVS: Move IPVS to net/netfilter/ipvs	2008-10-07 08:38:24 +11:00
netfilter.c	netfilter: netns: fix {ip,6}_route_me_harder() in netns	2008-10-08 11:35:03 +02:00
proc.c	tcp: MD5: Use MIB counter instead of warning for MD5 mismatch.	2008-07-30 03:27:25 -07:00
protocol.c
raw.c
route.c	net: implement emergency route cache rebulds when gc_elasticity is exceeded	2008-10-27 17:06:14 -07:00
syncookies.c	tcp: Port redirection support for TCP	2008-10-01 07:46:49 -07:00
sysctl_net_ipv4.c	net: implement emergency route cache rebulds when gc_elasticity is exceeded	2008-10-27 17:06:14 -07:00
tcp.c	tcp: kill pointless urg_mode	2008-10-07 14:43:06 -07:00
tcp_bic.c
tcp_cong.c	net: Remove CONFIG_KMOD from net/ (towards removing CONFIG_KMOD entirely)	2008-10-16 15:24:51 -07:00
tcp_cubic.c
tcp_diag.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c	tcp: Fix tcp_hybla zero congestion window growth with small rho and large cwnd.	2008-10-07 15:58:17 -07:00
tcp_illinois.c
tcp_input.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2008-10-08 14:56:41 -07:00
tcp_ipv4.c	tcpv[46]: fix md5 pseudoheader address field ordering	2008-10-09 14:37:47 -07:00
tcp_lp.c
tcp_minisocks.c	tcp: kill pointless urg_mode	2008-10-07 14:43:06 -07:00
tcp_output.c	syncookies: fix inclusion of tcp options in syn-ack	2008-10-26 23:10:12 -07:00
tcp_probe.c
tcp_scalable.c
tcp_timer.c	net: wrap sk->sk_backlog_rcv()	2008-10-07 14:18:42 -07:00
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tunnel4.c
udp.c	net: Rationalise email address: Network Specific Parts	2008-10-13 19:01:08 -07:00
udp_impl.h
udplite.c	mib: put udplite statistics on struct net	2008-07-18 04:03:45 -07:00
xfrm4_input.c
xfrm4_mode_beet.c	ipsec: Interfamily IPSec BEET	2008-08-06 02:39:30 -07:00
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c
xfrm4_policy.c
xfrm4_state.c
xfrm4_tunnel.c