netfilter: xtables: deconstify struct xt_action_param for matches

[firefly-linux-kernel-4.4.55.git] / net / bridge / br_multicast.c

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index fd96a8dc97f4b8c03bbeb67141d12669d817feb6..8ccdb8ee392899a75a0d12e50a9a965ce7ff9f2f 100644 (file)
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -49,22 +49,23 @@ static struct net_bridge_mdb_entry *__br_mdb_ip_get(
 static struct net_bridge_mdb_entry *br_mdb_ip_get(
        struct net_bridge_mdb_htable *mdb, __be32 dst)
 {
+       if (!mdb)
+               return NULL;
+
        return __br_mdb_ip_get(mdb, dst, br_ip_hash(mdb, dst));
 }
 
 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
                                        struct sk_buff *skb)
 {
-       struct net_bridge_mdb_htable *mdb = br->mdb;
-
-       if (!mdb || br->multicast_disabled)
+       if (br->multicast_disabled)
                return NULL;
 
        switch (skb->protocol) {
        case htons(ETH_P_IP):
                if (BR_INPUT_SKB_CB(skb)->igmp)
                        break;
-               return br_mdb_ip_get(mdb, ip_hdr(skb)->daddr);
+               return br_mdb_ip_get(br->mdb, ip_hdr(skb)->daddr);
        }
 
        return NULL;
@@ -607,7 +608,7 @@ static void br_multicast_send_query(struct net_bridge *br,
        if (port) {
                __skb_push(skb, sizeof(struct ethhdr));
                skb->dev = port->dev;
-               NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
+               NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
                        dev_queue_xmit);
        } else
                netif_rx(skb);
@@ -722,7 +723,7 @@ static int br_multicast_igmp3_report(struct net_bridge *br,
                if (!pskb_may_pull(skb, len))
                        return -EINVAL;
 
-               grec = (void *)(skb->data + len);
+               grec = (void *)(skb->data + len - sizeof(*grec));
                group = grec->grec_mca;
                type = grec->grec_type;
 
@@ -851,8 +852,8 @@ static int br_multicast_query(struct net_bridge *br,
                if (ih3->nsrcs)
                        goto out;
 
-               max_delay = ih3->code ? 1 :
-                           IGMPV3_MRC(ih3->code) * (HZ / IGMP_TIMER_SCALE);
+               max_delay = ih3->code ?
+                           IGMPV3_MRC(ih3->code) * (HZ / IGMP_TIMER_SCALE) : 1;
        }
 
        if (!group)
@@ -990,7 +991,7 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
 
                err = pskb_trim_rcsum(skb2, len);
                if (err)
-                       return err;
+                       goto err_out;
        }
 
        len -= ip_hdrlen(skb2);
@@ -1002,8 +1003,6 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
        if (!pskb_may_pull(skb2, sizeof(*ih)))
                goto out;
 
-       iph = ip_hdr(skb2);
-
        switch (skb2->ip_summed) {
        case CHECKSUM_COMPLETE:
                if (!csum_fold(skb2->csum))
@@ -1012,7 +1011,7 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
        case CHECKSUM_NONE:
                skb2->csum = 0;
                if (skb_checksum_complete(skb2))
-                       return -EINVAL;
+                       goto out;
        }
 
        err = 0;
@@ -1039,6 +1038,7 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
 
 out:
        __skb_push(skb2, offset);
+err_out:
        if (skb2 != skb)
                kfree_skb(skb2);
        return err;