On 08/12/2022 17:28, Ido Schimmel wrote: > Add the 'MDBE_ATTR_RTPORT' attribute to allow user space to specify the > routing protocol of the MDB port group entry. Enforce a minimum value of > 'RTPROT_STATIC' to prevent user space from using protocol values that > should only be set by the kernel (e.g., 'RTPROT_KERNEL'). Maintain > backward compatibility by defaulting to 'RTPROT_STATIC'. > > The protocol is already visible to user space in RTM_NEWMDB responses > and notifications via the 'MDBA_MDB_EATTR_RTPROT' attribute. > > The routing protocol allows a routing daemon to distinguish between > entries configured by it and those configured by the administrator. Once > MDB flush is supported, the protocol can be used as a criterion > according to which the flush is performed. > > Examples: > > # bridge mdb add dev br0 port dummy10 grp 239.1.1.1 permanent proto kernel > Error: integer out of range. > > # bridge mdb add dev br0 port dummy10 grp 239.1.1.1 permanent proto static > > # bridge mdb add dev br0 port dummy10 grp 239.1.1.1 src 192.0.2.1 permanent proto zebra > > # bridge mdb add dev br0 port dummy10 grp 239.1.1.2 permanent source_list 198.51.100.1,198.51.100.2 filter_mode include proto 250 > > # bridge -d mdb show > dev br0 port dummy10 grp 239.1.1.2 src 198.51.100.2 permanent filter_mode include proto 250 > dev br0 port dummy10 grp 239.1.1.2 src 198.51.100.1 permanent filter_mode include proto 250 > dev br0 port dummy10 grp 239.1.1.2 permanent filter_mode include source_list 198.51.100.2/0.00,198.51.100.1/0.00 proto 250 > dev br0 port dummy10 grp 239.1.1.1 src 192.0.2.1 permanent filter_mode include proto zebra > dev br0 port dummy10 grp 239.1.1.1 permanent filter_mode exclude proto static > > Signed-off-by: Ido Schimmel <idosch@xxxxxxxxxx> > --- > > Notes: > v1: > * Reject protocol for host entries. > > include/uapi/linux/if_bridge.h | 1 + > net/bridge/br_mdb.c | 15 +++++++++++++-- > net/bridge/br_private.h | 1 + > 3 files changed, 15 insertions(+), 2 deletions(-) > Acked-by: Nikolay Aleksandrov <razor@xxxxxxxxxxxxx>
