From 7597b266c56feaad7d4e6e65822766e929407da2 Mon Sep 17 00:00:00 2001 From: Nikolay Aleksandrov Date: Mon, 3 Jul 2017 15:14:59 -0700 Subject: [PATCH] bridge: allow ext learned entries to change ports current code silently ignores change of port in the request message. This patch makes sure the port is modified and notification is sent to userspace. Fixes: cf6b8e1eedff ("bridge: add API to notify bridge driver of learned FBD on offloaded device") Signed-off-by: Nikolay Aleksandrov Signed-off-by: Roopa Prabhu Signed-off-by: David S. Miller --- net/bridge/br_fdb.c | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index fef7872a320b..a5e4a736a984 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -1079,8 +1079,9 @@ void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p) int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, const unsigned char *addr, u16 vid) { - struct hlist_head *head; struct net_bridge_fdb_entry *fdb; + struct hlist_head *head; + bool modified = false; int err = 0; spin_lock_bh(&br->hash_lock); @@ -1095,14 +1096,25 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, } fdb->added_by_external_learn = 1; fdb_notify(br, fdb, RTM_NEWNEIGH); - } else if (fdb->added_by_external_learn) { - /* Refresh entry */ - fdb->updated = fdb->used = jiffies; - } else if (!fdb->added_by_user) { - /* Take over SW learned entry */ - fdb->added_by_external_learn = 1; + } else { fdb->updated = jiffies; - fdb_notify(br, fdb, RTM_NEWNEIGH); + + if (fdb->dst != p) { + fdb->dst = p; + modified = true; + } + + if (fdb->added_by_external_learn) { + /* Refresh entry */ + fdb->used = jiffies; + } else if (!fdb->added_by_user) { + /* Take over SW learned entry */ + fdb->added_by_external_learn = 1; + modified = true; + } + + if (modified) + fdb_notify(br, fdb, RTM_NEWNEIGH); } err_unlock: -- 2.30.2