From 1d7b66a7d9754c229d12c53ad6a1effe88c16ca4 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Sat, 10 Dec 2022 16:56:30 +0200 Subject: bridge: mcast: Allow user space to specify MDB entry routing protocol 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 Acked-by: Nikolay Aleksandrov Signed-off-by: Jakub Kicinski --- include/uapi/linux/if_bridge.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/uapi') diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h index 0d9fe73fc48c..d9de241d90f9 100644 --- a/include/uapi/linux/if_bridge.h +++ b/include/uapi/linux/if_bridge.h @@ -725,6 +725,7 @@ enum { MDBE_ATTR_SOURCE, MDBE_ATTR_SRC_LIST, MDBE_ATTR_GROUP_MODE, + MDBE_ATTR_RTPROT, __MDBE_ATTR_MAX, }; #define MDBE_ATTR_MAX (__MDBE_ATTR_MAX - 1) -- cgit v1.2.3