forked from Minki/linux
mainlining shenanigans
aad93c70b9
Mahesh Bandewar says: ==================== add 'private' and 'vepa' attributes to ipvlan modes IPvlan has always been operating in bridge-mode for its supported modes i.e. if the packets are destined to the adjacent neighbor dev, then IPvlan driver will switch the packet internally without needing the packets to hit the wire or get routed. However, there are situations where this bridge-mode is not needed. e.g. two private processes running inside two namespaces which are having one IPvlan slave each for its namespace but sharing the master. These processes should reach the outside world through the master device but at the same time the bridge function should not work. Currently that's not possible hence the private attribute for the selected mode comes in play. VEPA or 802.1Qbg on the other hand has limited appeal with IPvlan since IPvlan uses the mac-address of the lower device. So packets that are destined to the adjacent neighbor slave-dev will have same src and dest mac. When these packets reach the external switch/router, they will send you the redirect message which the host will have to deal with. Having said that this attribute will have appeal in debugging as IPvlan will not switch / short-circuit packets internally. e.g. using VEPA mode with lower-device in loopback mode will avoid some complicated set-ups that use non-local-bind with some route jugglery. This patch-set implements these attributes for the existing modes that IPvlan has. Please see individual patches for their detailed implementation. A subsequent ip-utils patch is needed and will be sent soon. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.