lkml.org 
[lkml]   [2009]   [Dec]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: [PATCH] iplink: add macvlan options for bridge mode
    Date
    Ping!

    Stephen, I submitted this twice but never heard back from you.
    The changes to macvlan have been merged in 2.6.33-rc1, so it
    would be good to have this included as well.

    Arnd

    On Tuesday 17 November 2009, Arnd Bergmann wrote:
    > Macvlan can now optionally support forwarding between its
    > ports, if they are in "bridge" mode. This adds support
    > for this option to "ip link add", "ip link set" and "ip
    > -d link show".
    >
    > The default mode in the kernel is now "vepa" mode, meaning
    > "virtual ethernet port aggregator". This mode is used
    > together with the "hairpin" mode of an ethernet bridge
    > that the parent of the macvlan device is connected to.
    > All frames still get sent out to the external interface,
    > but the adjacent bridge is able to send them back on
    > the same wire in hairpin mode, so the macvlan ports
    > are able to see each other, which the bridge can be
    > configured to monitor and control traffic between
    > all macvlan instances. Multicast traffic coming in
    > from the external interface is checked for the source
    > MAC address and only delivered to ports that have not
    > yet seen it.
    >
    > In bridge mode, macvlan will send all multicast traffic
    > to other interfaces that are also in bridge mode but
    > not to those in vepa mode, which get them on the way
    > back from the hairpin.
    >
    > The third supported mode is "private", which prevents
    > communication between macvlans even if the adjacent
    > bridge is in hairpin mode. This behavior is closer to
    > the original implementation of macvlan but stricly
    > maintains isolation.
    >
    > Signed-off-by: Arnd Bergmann <arnd@arndb.de>



    \
     
     \ /
      Last update: 2009-12-18 14:47    [W:4.186 / U:0.448 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site