Re: [PATCH iproute2-next 0/3] Extend locked port feature with FDB locked flag (MAC-Auth/MAB)

Hans Schultz
2022-03-10T14:42:56Z

On tor, mar 10, 2022 at 16:18, Nikolay Aleksandrov <razor@blackwall.org> wrote:
> On 10/03/2022 15:36, Hans Schultz wrote:
>> This patch set extends the locked port feature for devices
>> that are behind a locked port, but do not have the ability to
>> authorize themselves as a supplicant using IEEE 802.1X.
>> Such devices can be printers, meters or anything related to
>> fixed installations. Instead of 802.1X authorization, devices
>> can get access based on their MAC addresses being whitelisted.
>>
>> For an authorization daemon to detect that a device is trying
>> to get access through a locked port, the bridge will add the
>> MAC address of the device to the FDB with a locked flag to it.
>> Thus the authorization daemon can catch the FDB add event and
>> check if the MAC address is in the whitelist and if so replace
>> the FDB entry without the locked flag enabled, and thus open
>> the port for the device.
>>
>> This feature is known as MAC-Auth or MAC Authentication Bypass
>> (MAB) in Cisco terminology, where the full MAB concept involves
>> additional Cisco infrastructure for authorization. There is no
>> real authentication process, as the MAC address of the device
>> is the only input the authorization daemon, in the general
>> case, has to base the decision if to unlock the port or not.
>>
>> With this patch set, an implementation of the offloaded case is
>> supplied for the mv88e6xxx driver. When a packet ingresses on
>> a locked port, an ATU miss violation event will occur. When
>> handling such ATU miss violation interrupts, the MAC address of
>> the device is added to the FDB with a zero destination port
>> vector (DPV) and the MAC address is communicated through the
>> switchdev layer to the bridge, so that a FDB entry with the
>> locked flag enabled can be added.
>>
>> Hans Schultz (3):
>> net: bridge: add fdb flag to extent locked port feature
>> net: switchdev: add support for offloading of fdb locked flag
>> net: dsa: mv88e6xxx: mac-auth/MAB implementation
>>
>> drivers/net/dsa/mv88e6xxx/Makefile | 1 +
>> drivers/net/dsa/mv88e6xxx/chip.c | 10 +--
>> drivers/net/dsa/mv88e6xxx/chip.h | 5 ++
>> drivers/net/dsa/mv88e6xxx/global1.h | 1 +
>> drivers/net/dsa/mv88e6xxx/global1_atu.c | 29 +++++++-
>> .../net/dsa/mv88e6xxx/mv88e6xxx_switchdev.c | 67 +++++++++++++++++++
>> .../net/dsa/mv88e6xxx/mv88e6xxx_switchdev.h | 20 ++++++
>> drivers/net/dsa/mv88e6xxx/port.c | 11 +++
>> drivers/net/dsa/mv88e6xxx/port.h | 1 +
>> include/net/switchdev.h | 3 +-
>> include/uapi/linux/neighbour.h | 1 +
>> net/bridge/br.c | 3 +-
>> net/bridge/br_fdb.c | 13 +++-
>> net/bridge/br_input.c | 11 ++-
>> net/bridge/br_private.h | 5 +-
>> 15 files changed, 167 insertions(+), 14 deletions(-)
>> create mode 100644 drivers/net/dsa/mv88e6xxx/mv88e6xxx_switchdev.c
>> create mode 100644 drivers/net/dsa/mv88e6xxx/mv88e6xxx_switchdev.h
>>
>
> This doesn't look like an iproute2 patch-set. I think you've messed the target
> in the subject.

Sorry, complete bummer!
I have resent it with the correct header.