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eb1d164143
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Herbert Xu eb1d164143 bridge: Add core IGMP snooping support 
This patch adds the core functionality of IGMP snooping support
without actually hooking it up.  So this patch should be a no-op
as far as the bridge's external behaviour is concerned.

All the new code and data is controlled by the Kconfig option
BRIDGE_IGMP_SNOOPING.  A run-time toggle is also available.

The multicast switching is done using an hash table that is
lockless on the read-side through RCU.  On the write-side the
new multicast_lock is used for all operations.  The hash table
supports dynamic growth/rehashing.

The hash table will be rehashed if any chain length exceeds a
preset limit.  If rehashing does not reduce the maximum chain
length then snooping will be disabled.

These features may be added in future (in no particular order):

* IGMPv3 source support
* Non-querier router detection
* IPv6

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:48:45 -08:00
..
9p 9p: fix p9_client_destroy unconditional calling v9fs_put_trans 2010-02-08 18:18:34 -06:00
802 sysctl net: Remove unused binary sysctl code 2009-11-12 02:05:06 -08:00
8021q percpu: add __percpu sparse annotations to net 2010-02-16 23:05:38 -08:00
appletalk net: appletalk: use seq_hlist_foo() helpers 2010-02-10 11:12:09 -08:00
atm net: atm: use seq_list_foo() helpers 2010-02-10 12:31:10 -08:00
ax25 net: ax25: use seq_hlist_foo() helpers 2010-02-10 11:12:09 -08:00
bluetooth net: use netdev_mc_count and netdev_mc_empty when appropriate 2010-02-12 11:38:58 -08:00
bridge bridge: Add core IGMP snooping support 2010-02-28 00:48:45 -08:00
can can: deny filterlist access on non-CAN interfaces 2010-02-02 07:21:34 -08:00
core rtnetlink: support specifying device flags on device creation 2010-02-27 02:43:40 -08:00
dcb const: struct nla_policy 2010-02-18 14:30:18 -08:00
dccp percpu: add __percpu sparse annotations to net 2010-02-16 23:05:38 -08:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-12-08 07:55:01 -08:00
dsa netdev: convert pseudo-devices to netdev_tx_t 2009-09-01 01:13:07 -07:00
econet net: use net_eq to compare nets 2009-11-25 15:14:13 -08:00
ethernet llc: use dev_hard_header 2009-12-26 20:38:23 -08:00
ieee802154 net: use net_eq to compare nets 2009-11-25 15:14:13 -08:00
ipv4 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
ipv6 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
ipx net: ipx: use seq_list_foo() helpers 2010-02-10 12:31:10 -08:00
irda const: struct nla_policy 2010-02-18 14:30:18 -08:00
iucv const: constify remaining dev_pm_ops 2009-12-15 08:53:25 -08:00
key xfrm: SP lookups signature with mark 2010-02-22 16:21:12 -08:00
lapb net: remove NET_RX_BAD and NET_RX_CN* defines 2009-07-05 19:15:35 -07:00
llc llc: fix SAP reference counting w.r.t. socket handling 2009-12-26 20:47:23 -08:00
mac80211 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2010-02-27 02:05:54 -08:00
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
netlabel net: remove INIT_RCU_HEAD() usage 2010-02-17 00:03:27 -08:00
netlink Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-02-03 19:38:22 -08:00
netrom net: netrom: use seq_hlist_foo() helpers 2010-02-10 11:12:08 -08:00
packet af_packet: do not accept mc address smaller then dev->addr_len in packet_mc_add() 2010-02-26 04:18:34 -08:00
phonet net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
rds net/rds: remove uses of NIPQUAD, use %pI4 2010-02-03 20:16:48 -08:00
rfkill net/rfkill/core.c: work around gcc-4.0.2 silliness 2009-12-07 16:51:23 -05:00
rose net: rose: use seq_hlist_foo() helpers 2010-02-10 11:12:08 -08:00
rxrpc net: use net_eq to compare nets 2009-11-25 15:14:13 -08:00
sched Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-02-09 11:44:44 -08:00
sctp net: remove INIT_RCU_HEAD() usage 2010-02-17 00:03:27 -08:00
sunrpc net: Fix first line of kernel-doc for a few functions 2010-02-14 22:35:47 -08:00
tipc tipc: Clean up configuration file 2010-01-19 14:23:57 -08:00
unix AF_UNIX: update locking comment 2010-02-18 14:12:06 -08:00
wanrouter headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
wimax const: struct nla_policy 2010-02-18 14:30:18 -08:00
wireless Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2010-02-25 23:26:21 -08:00
x25 X25: Dont let x25_bind use addresses containing characters 2010-02-15 21:49:52 -08:00
xfrm xfrm: clone mark when cloning policy 2010-02-23 15:09:53 -08:00
compat.c net: use compat helper functions in compat_sys_recvmmsg 2009-12-11 15:07:57 -08:00
Kconfig net/compat/wext: send different messages to compat tasks 2009-07-15 08:53:39 -07:00
Makefile net: remove redundant sched/ in net/Makefile 2009-07-12 20:11:14 -07:00
nonet.c
socket.c fs: no games with DCACHE_UNHASHED 2009-12-17 10:51:40 -05:00
sysctl_net.c net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
TUNABLE