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b2db756449
linux/net/ipv6
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YOSHIFUJI Hideaki b2db756449 ipv6: Reduce timer events for addrconf_verify(). 
This patch reduces timer events while keeping accuracy by rounding
our timer and/or batching several address validations in addrconf_verify().

addrconf_verify() is called at earliest timeout among interface addresses'
timeouts, but at maximum ADDR_CHECK_FREQUENCY (120 secs).

In most cases, all of timeouts of interface addresses are long enough
(e.g. several hours or days vs 2 minutes), this timer is usually called
every ADDR_CHECK_FREQUENCY, and it is okay to be lazy.
(Note this timer could be eliminated if all code paths which modifies
variables related to timeouts call us manually, but it is another story.)

However, in other least but important cases, we try keeping accuracy.

When the real interface address timeout is coming, and the timeout
is just before the rounded timeout, we accept some error.

When a timeout has been reached, we also try batching other several
events in very near future.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-20 16:11:12 -07:00
..
netfilter Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2010-02-26 09:31:09 -08:00
addrconf_core.c ipv6: Remove IPV6_ADDR_RESERVED 2010-02-26 03:59:07 -08:00
addrconf.c ipv6: Reduce timer events for addrconf_verify(). 2010-03-20 16:11:12 -07:00
addrlabel.c net: replace %p6 with %pI6 2008-10-29 12:52:50 -07:00
af_inet6.c percpu: add __percpu sparse annotations to net 2010-02-16 23:05:38 -08:00
ah6.c xfrm: SA lookups signature with mark 2010-02-22 16:20:22 -08:00
anycast.c net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
datagram.c ipv6: no more dev_put() in datagram_send_ctl() 2009-11-02 03:42:41 -08:00
esp6.c xfrm: SA lookups signature with mark 2010-02-22 16:20:22 -08:00
exthdrs_core.c
exthdrs.c ipv6: drop unused "dev" arg of icmpv6_send() 2010-02-18 14:30:17 -08:00
fib6_rules.c ipv6: Optmize translation between IPV6_PREFER_SRC_xxx and RT6_LOOKUP_F_xxx. 2010-03-07 15:25:53 -08:00
icmp.c ipv6: drop unused "dev" arg of icmpv6_send() 2010-02-18 14:30:17 -08:00
inet6_connection_sock.c net: IPv6 changes 2009-10-20 18:55:45 -07:00
inet6_hashtables.c tcp: Fix a connect() race with timewait sockets 2009-12-08 20:17:51 -08:00
ip6_fib.c ipv6: use standard lists for FIB walks 2010-02-18 14:30:17 -08:00
ip6_flowlabel.c net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
ip6_input.c ipv6: drop unused "dev" arg of icmpv6_send() 2010-02-18 14:30:17 -08:00
ip6_output.c ipv6: Use 1280 as min MTU for ipv6 forwarding 2010-02-26 04:34:49 -08:00
ip6_tunnel.c ipv6: drop unused "dev" arg of icmpv6_send() 2010-02-18 14:30:17 -08:00
ip6mr.c net: ipmr/ip6mr: fix potential out-of-bounds vif_table access 2010-03-19 22:47:22 -07:00
ipcomp6.c xfrm: SA lookups signature with mark 2010-02-22 16:20:22 -08:00
ipv6_sockglue.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-27 01:03:26 -07:00
Kconfig IPv6: Fix 6RD typo 2009-10-07 14:50:30 -07:00
Makefile [IPV6] MROUTE: Support multicast forwarding. 2008-04-05 22:33:38 +09:00
mcast.c IPv6: convert mc_lock to spinlock 2010-02-17 18:48:44 -08:00
mip6.c ipv6: drop unused "dev" arg of icmpv6_send() 2010-02-18 14:30:17 -08:00
ndisc.c net neigh: Decouple per interface neighbour table controls from binary sysctls 2010-02-16 15:55:18 -08:00
netfilter.c net: skb->dst accessors 2009-06-03 02:51:04 -07:00
proc.c percpu: add __percpu sparse annotations to net 2010-02-16 23:05:38 -08:00
protocol.c net: constify struct inet6_protocol 2009-09-14 17:03:05 -07:00
raw.c net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
reassembly.c ipv6: drop unused "dev" arg of icmpv6_send() 2010-02-18 14:30:17 -08:00
route.c ipv6: Remove redundant dst NULL check in ip6_dst_check 2010-03-19 21:00:42 -07:00
sit.c ipv6: drop unused "dev" arg of icmpv6_send() 2010-02-18 14:30:17 -08:00
syncookies.c net: Add rtnetlink init_rcvwnd to set the TCP initial receive window 2009-12-23 14:13:30 -08:00
sysctl_net_ipv6.c net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
tcp_ipv6.c tcp: Add SNMP counters for backlog and min_ttl drops 2010-03-08 10:45:27 -08:00
tunnel6.c ipv6: drop unused "dev" arg of icmpv6_send() 2010-02-18 14:30:17 -08:00
udp_impl.h net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
udp.c net: backlog functions rename 2010-03-05 13:34:03 -08:00
udplite.c net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
xfrm6_input.c xfrm: SA lookups signature with mark 2010-02-22 16:20:22 -08:00
xfrm6_mode_beet.c ipsec: Interfamily IPSec BEET, ipv4-inner ipv6-outer 2008-08-06 02:40:25 -07:00
xfrm6_mode_ro.c [IPSEC]: Make x->lastused an unsigned long 2008-01-28 14:53:52 -08:00
xfrm6_mode_transport.c [IPSEC]: Use IPv6 calling convention as the convention for x->mode->output 2007-10-10 16:55:54 -07:00
xfrm6_mode_tunnel.c net: skb->dst accessors 2009-06-03 02:51:04 -07:00
xfrm6_output.c ipv6: drop unused "dev" arg of icmpv6_send() 2010-02-18 14:30:17 -08:00
xfrm6_policy.c ipsec: Fix bogus bundle flowi 2010-03-03 01:04:37 -08:00
xfrm6_state.c ipv6: fix sparse warning: Using plain integer as NULL pointer 2009-02-21 23:37:10 -08:00
xfrm6_tunnel.c net: remove INIT_RCU_HEAD() usage 2010-02-17 00:03:27 -08:00