diff options
| author | stephen hemminger <shemminger@vyatta.com> | 2012-12-13 06:51:28 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-12-13 12:58:11 -0500 |
| commit | eca2a43bb0d2c6ebd528be6acb30a88435abe307 (patch) | |
| tree | 28504250426ed34eac1c678bbe59624a7555e22d /net/bridge/br_multicast.c | |
| parent | dc2e57340deb8be1133b1eae2c7d4303133c133c (diff) | |
| download | lwn-eca2a43bb0d2c6ebd528be6acb30a88435abe307.tar.gz lwn-eca2a43bb0d2c6ebd528be6acb30a88435abe307.zip | |
bridge: fix icmpv6 endian bug and other sparse warnings
Fix the warnings reported by sparse on recent bridge multicast
changes. Mostly just rcu annotation issues but in this case
sparse found a real bug! The ICMPv6 mld2 query mrc
values is in network byte order.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_multicast.c')
| -rw-r--r-- | net/bridge/br_multicast.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 977c3ee02e65..1093c89095d8 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -622,7 +622,7 @@ out: struct net_bridge_port_group *br_multicast_new_port_group( struct net_bridge_port *port, struct br_ip *group, - struct net_bridge_port_group *next) + struct net_bridge_port_group __rcu *next) { struct net_bridge_port_group *p; @@ -632,7 +632,7 @@ struct net_bridge_port_group *br_multicast_new_port_group( p->addr = *group; p->port = port; - p->next = next; + rcu_assign_pointer(p->next, next); hlist_add_head(&p->mglist, &port->mglist); setup_timer(&p->timer, br_multicast_port_group_expired, (unsigned long)p); @@ -1138,7 +1138,7 @@ static int br_ip6_multicast_query(struct net_bridge *br, struct sk_buff *skb) { const struct ipv6hdr *ip6h = ipv6_hdr(skb); - struct mld_msg *mld = (struct mld_msg *) icmp6_hdr(skb); + struct mld_msg *mld; struct net_bridge_mdb_entry *mp; struct mld2_query *mld2q; struct net_bridge_port_group *p; @@ -1165,6 +1165,7 @@ static int br_ip6_multicast_query(struct net_bridge *br, if (max_delay) group = &mld->mld_mca; } else if (skb->len >= sizeof(*mld2q)) { + u16 mrc; if (!pskb_may_pull(skb, sizeof(*mld2q))) { err = -EINVAL; goto out; @@ -1172,7 +1173,8 @@ static int br_ip6_multicast_query(struct net_bridge *br, mld2q = (struct mld2_query *)icmp6_hdr(skb); if (!mld2q->mld2q_nsrcs) group = &mld2q->mld2q_mca; - max_delay = mld2q->mld2q_mrc ? MLDV2_MRC(mld2q->mld2q_mrc) : 1; + mrc = ntohs(mld2q->mld2q_mrc); + max_delay = mrc ? MLDV2_MRC(mrc) : 1; } if (!group) |