netdev - [PATCH net-next 4/4] bridge: mcast: Simplify MDB entry creation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 18 Oct 2022 09:40:01 +0300
From:   Ido Schimmel <idosch@...dia.com>
To:     netdev@...r.kernel.org, bridge@...ts.linux-foundation.org
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com, roopa@...dia.com, razor@...ckwall.org,
        mlxsw@...dia.com, Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 4/4] bridge: mcast: Simplify MDB entry creation

Before creating a new MDB entry, br_multicast_new_group() will call
br_mdb_ip_get() to see if one exists and return it if so.

Therefore, simply call br_multicast_new_group() and omit the call to
br_mdb_ip_get().

Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
 net/bridge/br_mdb.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 589ff497d50c..321be94c445a 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -866,7 +866,6 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
 	unsigned long now = jiffies;
 	unsigned char flags = 0;
 	u8 filter_mode;
-	int err;
 
 	__mdb_entry_to_br_ip(entry, &group, mdb_attrs);
 
@@ -892,13 +891,9 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
 		return -EINVAL;
 	}
 
-	mp = br_mdb_ip_get(br, &group);
-	if (!mp) {
-		mp = br_multicast_new_group(br, &group);
-		err = PTR_ERR_OR_ZERO(mp);
-		if (err)
-			return err;
-	}
+	mp = br_multicast_new_group(br, &group);
+	if (IS_ERR(mp))
+		return PTR_ERR(mp);
 
 	/* host join */
 	if (!port) {
-- 
2.37.3