From 0e761ac08fd8d53dfc53bb762748a61ffe3fe7b8 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Thu, 29 Oct 2020 01:48:15 +0200 Subject: net: bridge: explicitly convert between mdb entry state and port group flags When creating a new multicast port group, there is implicit conversion between the __u8 state member of struct br_mdb_entry and the unsigned char flags member of struct net_bridge_port_group. This implicit conversion relies on the fact that MDB_PERMANENT is equal to MDB_PG_FLAGS_PERMANENT. Let's be more explicit and convert the state to flags manually. Signed-off-by: Vladimir Oltean Link: https://lore.kernel.org/r/20201028234815.613226-1-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski --- net/bridge/br_mdb.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'net/bridge') diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 3c8863418d0b..8846c5bcd075 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -846,6 +846,7 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port, struct net_bridge_port_group __rcu **pp; struct br_ip group, star_group; unsigned long now = jiffies; + unsigned char flags = 0; u8 filter_mode; int err; @@ -904,7 +905,10 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port, filter_mode = br_multicast_is_star_g(&group) ? MCAST_EXCLUDE : MCAST_INCLUDE; - p = br_multicast_new_port_group(port, &group, *pp, entry->state, NULL, + if (entry->state == MDB_PERMANENT) + flags |= MDB_PG_FLAGS_PERMANENT; + + p = br_multicast_new_port_group(port, &group, *pp, flags, NULL, filter_mode, RTPROT_STATIC); if (unlikely(!p)) { NL_SET_ERR_MSG_MOD(extack, "Couldn't allocate new port group"); -- cgit v1.2.3