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Message-Id: <20230905-fdb_limit-v3-1-7597cd500a82@avm.de>
Date: Tue, 05 Sep 2023 13:47:18 +0200
From: Johannes Nixdorf <jnixdorf-oss@....de>
To: "David S. Miller" <davem@...emloft.net>,
Andrew Lunn <andrew@...n.ch>, David Ahern <dsahern@...il.com>,
Eric Dumazet <edumazet@...gle.com>,
Florian Fainelli <f.fainelli@...il.com>,
Ido Schimmel <idosch@...dia.com>,
Jakub Kicinski <kuba@...nel.org>,
Nikolay Aleksandrov <razor@...ckwall.org>,
Oleksij Rempel <linux@...pel-privat.de>,
Paolo Abeni <pabeni@...hat.com>,
Roopa Prabhu <roopa@...dia.com>, Shuah Khan <shuah@...nel.org>,
Vladimir Oltean <vladimir.oltean@....com>
Cc: bridge@...ts.linux-foundation.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
Johannes Nixdorf <jnixdorf-oss@....de>
Subject: [PATCH net-next v3 1/6] 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.
Signed-off-by: Johannes Nixdorf <jnixdorf-oss@....de>
---
net/bridge/br_fdb.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index e69a872bfc1d..06e28ef8d9ff 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -1056,7 +1056,7 @@ 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 +1069,8 @@ 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 +1102,6 @@ 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
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