diff options
| author | Fischer, Anna <anna.fischer@hp.com> | 2009-08-13 06:55:16 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-08-13 16:26:11 -0700 |
| commit | 3982d3d28b02bed5312015762fe2112ccbaf9051 (patch) | |
| tree | 783332d9c3983924dfc102b8a2f8147ad5bd078c /net/bridge/br_private.h | |
| parent | 8dd07086a1f8048428d33a1917b6209978750cb1 (diff) | |
net/bridge: Add 'hairpin' port forwarding mode
This patch adds a 'hairpin' (also called 'reflective relay') mode
port configuration to the Linux Ethernet bridge kernel module.
A bridge supporting hairpin forwarding mode can send frames back
out through the port the frame was received on.
Hairpin mode is required to support basic VEPA (Virtual
Ethernet Port Aggregator) capabilities.
You can find additional information on VEPA here:
http://tech.groups.yahoo.com/group/evb/
http://www.ieee802.org/1/files/public/docs2009/new-hudson-vepa_seminar-20090514d.pdf
http://www.internet2.edu/presentations/jt2009jul/20090719-congdon.pdf
An additional patch 'bridge-utils: Add 'hairpin' port forwarding mode'
is provided to allow configuring hairpin mode from userspace tools.
Signed-off-by: Paul Congdon <paul.congdon@hp.com>
Signed-off-by: Anna Fischer <anna.fischer@hp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_private.h')
| -rw-r--r-- | net/bridge/br_private.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index d5b5537272b..8319247dad5 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -81,6 +81,9 @@ struct net_bridge_port struct timer_list message_age_timer; struct kobject kobj; struct rcu_head rcu; + + unsigned long flags; +#define BR_HAIRPIN_MODE 0x00000001 }; struct net_bridge |