[PATCH net-next] bridge: allow ext learned entries to change ports
From: Roopa Prabhu <hidden>
Date: 2017-07-03 22:15:04
From: Nikolay Aleksandrov <redacted>
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 <redacted>
Signed-off-by: Roopa Prabhu <redacted>
---
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 fef7872..a5e4a73 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:
--
1.9.1