2023-10-16 13:46:26

by Johannes Nixdorf

[permalink] [raw]
Subject: [PATCH net-next v5 1/5] net: bridge: Set BR_FDB_ADDED_BY_USER early in fdb_add_entry

In preparation of the following fdb limit for dynamically learned entries,
allow fdb_create to detect that the entry was added by the user. This
way it can skip applying the limit in this case.

Reviewed-by: Ido Schimmel <[email protected]>
Acked-by: Nikolay Aleksandrov <[email protected]>
Signed-off-by: Johannes Nixdorf <[email protected]>
---
net/bridge/br_fdb.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index e69a872bfc1d..f517ea92132c 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -1056,7 +1056,8 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
if (!(flags & NLM_F_CREATE))
return -ENOENT;

- fdb = fdb_create(br, source, addr, vid, 0);
+ fdb = fdb_create(br, source, addr, vid,
+ BIT(BR_FDB_ADDED_BY_USER));
if (!fdb)
return -ENOMEM;

@@ -1069,6 +1070,8 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
WRITE_ONCE(fdb->dst, source);
modified = true;
}
+
+ set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
}

if (fdb_to_nud(br, fdb) != state) {
@@ -1100,8 +1103,6 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
if (fdb_handle_notify(fdb, notify))
modified = true;

- set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
-
fdb->used = jiffies;
if (modified) {
if (refresh)

--
2.42.0