This patchset adds MDB get support, allowing user space to request a single MDB entry to be retrieved instead of dumping the entire MDB. Support is added in both the bridge and VXLAN drivers. Patches #1-#6 are small preparations in both drivers. Patches #7-#8 add the required uAPI attributes for the new functionality and the MDB get net device operation (NDO), respectively. Patches #9-#10 implement the MDB get NDO in both drivers. Patch #11 registers a handler for RTM_GETMDB messages in rtnetlink core. The handler derives the net device from the ifindex specified in the ancillary header and invokes its MDB get NDO. Patches #12-#13 add selftests by converting tests that use MDB dump with grep to the new MDB get functionality. iproute2 changes can be found here [1]. v2: * Patch #7: Add a comment to describe attributes structure. * Patch #9: Add a comment above spin_lock_bh(). [1] https://github.com/idosch/iproute2/tree/submit/mdb_get_v1 Ido Schimmel (13): bridge: mcast: Dump MDB entries even when snooping is disabled bridge: mcast: Account for missing attributes bridge: mcast: Factor out a helper for PG entry size calculation bridge: mcast: Rename MDB entry get function vxlan: mdb: Adjust function arguments vxlan: mdb: Factor out a helper for remote entry size calculation bridge: add MDB get uAPI attributes net: Add MDB get device operation bridge: mcast: Add MDB get support vxlan: mdb: Add MDB get support rtnetlink: Add MDB get support selftests: bridge_mdb: Use MDB get instead of dump selftests: vxlan_mdb: Use MDB get instead of dump drivers/net/vxlan/vxlan_core.c | 1 + drivers/net/vxlan/vxlan_mdb.c | 188 ++++++++++++++++-- drivers/net/vxlan/vxlan_private.h | 2 + include/linux/netdevice.h | 4 + include/uapi/linux/if_bridge.h | 18 ++ net/bridge/br_device.c | 3 +- net/bridge/br_input.c | 2 +- net/bridge/br_mdb.c | 184 ++++++++++++++++- net/bridge/br_multicast.c | 5 +- net/bridge/br_private.h | 19 +- net/core/rtnetlink.c | 89 ++++++++- .../selftests/net/forwarding/bridge_mdb.sh | 184 +++++++---------- tools/testing/selftests/net/test_vxlan_mdb.sh | 108 +++++----- 13 files changed, 608 insertions(+), 199 deletions(-) -- 2.40.1
