diff options
Diffstat (limited to 'target/linux/generic/pending-5.15/763-net-bridge-switchdev-Include-local-flag-in-FDB-notif.patch')
| -rw-r--r-- | target/linux/generic/pending-5.15/763-net-bridge-switchdev-Include-local-flag-in-FDB-notif.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.15/763-net-bridge-switchdev-Include-local-flag-in-FDB-notif.patch b/target/linux/generic/pending-5.15/763-net-bridge-switchdev-Include-local-flag-in-FDB-notif.patch new file mode 100644 index 0000000000..41374c88df --- /dev/null +++ b/target/linux/generic/pending-5.15/763-net-bridge-switchdev-Include-local-flag-in-FDB-notif.patch @@ -0,0 +1,42 @@ +From ec5be4f79026282925ae383caa431a8d41e3456a Mon Sep 17 00:00:00 2001 +From: Tobias Waldekranz <tobias@waldekranz.com> +Date: Sat, 16 Jan 2021 02:25:10 +0100 +Subject: [PATCH] net: bridge: switchdev: Include local flag in FDB + notifications + +Some switchdev drivers, notably DSA, ignore all dynamically learned +address notifications (!added_by_user) as these are autonomously added +by the switch. Previously, such a notification was indistinguishable +from a local address notification. Include a local bit in the +notification so that the two classes can be discriminated. + +This allows DSA-like devices to add local addresses to the hardware +FDB (with the CPU as the destination), thereby avoiding flows towards +the CPU being flooded by the switch as unknown unicast. + +Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com> +--- + include/net/switchdev.h | 1 + + net/bridge/br_switchdev.c | 1 + + 2 files changed, 2 insertions(+) + +--- a/include/net/switchdev.h ++++ b/include/net/switchdev.h +@@ -224,6 +224,7 @@ struct switchdev_notifier_fdb_info { + const unsigned char *addr; + u16 vid; + u8 added_by_user:1, ++ local:1, + offloaded:1; + }; + +--- a/net/bridge/br_switchdev.c ++++ b/net/bridge/br_switchdev.c +@@ -109,6 +109,7 @@ br_switchdev_fdb_notify(const struct net + .addr = fdb->key.addr.addr, + .vid = fdb->key.vlan_id, + .added_by_user = test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags), ++ .local = test_bit(BR_FDB_LOCAL, &fdb->flags), + .offloaded = test_bit(BR_FDB_OFFLOADED, &fdb->flags), + }; + |