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23721387c4
linux/net
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Simon Wunderlich 23721387c4 batman-adv: add basic bridge loop avoidance code 
This second version of the bridge loop avoidance for batman-adv
avoids loops between the mesh and a backbone (usually a LAN).

By connecting multiple batman-adv mesh nodes to the same ethernet
segment a loop can be created when the soft-interface is bridged
into that ethernet segment. A simple visualization of the loop
involving the most common case - a LAN as ethernet segment:

node1  <-- LAN  -->  node2
  |                   |
wifi   <-- mesh -->  wifi

Packets from the LAN (e.g. ARP broadcasts) will circle forever from
node1 or node2 over the mesh back into the LAN.

With this patch, batman recognizes backbone gateways, nodes which are
part of the mesh and backbone/LAN at the same time. Each backbone
gateway "claims" clients from within the mesh to handle them
exclusively. By restricting that only responsible backbone gateways
may handle their claimed clients traffic, loops are effectively
avoided.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-04-11 14:28:58 +02:00
..
9p net/9p: handle flushed Tclunk/Tremove 2012-02-26 14:49:57 -06:00
802 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-02 17:53:39 -07:00
8021q vlan: Stop using NLA_PUT*(). 2012-04-02 04:33:44 -04:00
appletalk net: remove k{un}map_skb_frag() 2012-04-05 05:36:43 -04:00
atm Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ax25 Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
batman-adv batman-adv: add basic bridge loop avoidance code 2012-04-11 14:28:58 +02:00
bluetooth Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-29 18:12:23 -07:00
bridge bridge: Stop using NLA_PUT*(). 2012-04-02 04:33:44 -04:00
caif caif: Stop using NLA_PUT*(). 2012-04-02 04:33:44 -04:00
can
ceph libceph: isolate kmap() call in write_partial_msg_pages() 2012-03-22 10:47:52 -05:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
dcb net/dcb: Add an optional max rate attribute 2012-04-05 05:08:04 -04:00
dccp dccp: fix bug in sequence number validation during connection setup 2012-03-03 09:02:52 -07:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
dns_resolver
dsa
econet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ethernet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ieee802154 ieee802154: Stop using NLA_PUT*(). 2012-04-02 04:33:43 -04:00
ipv4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
ipx
irda Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
iucv Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2012-03-22 18:15:32 -07:00
key
l2tp l2tp: Stop using NLA_PUT*(). 2012-04-02 04:33:41 -04:00
lapb Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
llc llc: Fix race condition in llc_ui_recvmsg 2012-01-24 15:33:19 -05:00
mac80211 Merge branch 'akpm' (Andrew's patch-bomb) 2012-04-05 15:30:34 -07:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
netlabel netlabel: use GFP flags from caller instead of GFP_ATOMIC 2012-03-22 19:29:57 -04:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
netrom Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
nfc nfc: Stop using NLA_PUT*(). 2012-04-01 18:11:37 -04:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
packet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
phonet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
rds RDS: use gfp flags from caller in conn_alloc() 2012-03-22 19:29:58 -04:00
rfkill device.h: cleanup users outside of linux/include (C files) 2012-03-11 14:27:37 -04:00
rose Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-02 17:53:39 -07:00
rxrpc RxRPC: Fix kcalloc parameters swapped 2012-02-14 14:41:55 -05:00
sched pkt_sched: Stop using NLA_PUT*(). 2012-04-01 18:11:37 -04:00
sctp sctp: Allow struct sctp_event_subscribe to grow without breaking binaries 2012-04-04 18:05:02 -04:00
sunrpc Merge branch 'for-3.4' of git://linux-nfs.org/~bfields/linux 2012-03-29 14:53:25 -07:00
tipc tipc: Optimize setting of immutable payload message header fields 2012-02-29 11:45:35 -05:00
unix af_unix: reduce high order page allocations 2012-04-03 16:43:18 -04:00
wanrouter
wimax
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
x25
xfrm xfrm_user: Stop using NLA_PUT*(). 2012-04-01 18:11:36 -04:00
compat.c Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-29 18:12:23 -07:00
Kconfig
Makefile
nonet.c
socket.c tcp: tcp_sendpages() should call tcp_push() once 2012-04-05 19:04:27 -04:00
sysctl_net.c sysctl: Modify __register_sysctl_paths to take a set instead of a root and an nsproxy 2012-01-24 16:40:30 -08:00