inet: constify ip headers and in6_addr

[mirror_ubuntu-bionic-kernel.git] / net / bridge / br_multicast.c

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 030a002ff8eee31230c02bad9c1584f5f94931aa..2f14eafdeeabe80d5dd5a5643e55ecf3a2e74f52 100644 (file)
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -413,7 +413,7 @@ out:
 
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
-                                                   struct in6_addr *group)
+                                                   const struct in6_addr *group)
 {
        struct sk_buff *skb;
        struct ipv6hdr *ip6h;
@@ -445,9 +445,9 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
        ip6h->payload_len = htons(8 + sizeof(*mldq));
        ip6h->nexthdr = IPPROTO_HOPOPTS;
        ip6h->hop_limit = 1;
+       ipv6_addr_set(&ip6h->daddr, htonl(0xff020000), 0, 0, htonl(1));
        ipv6_dev_get_saddr(dev_net(br->dev), br->dev, &ip6h->daddr, 0,
                           &ip6h->saddr);
-       ipv6_addr_set(&ip6h->daddr, htonl(0xff020000), 0, 0, htonl(1));
        ipv6_eth_mc_map(&ip6h->daddr, eth->h_dest);
 
        hopopt = (u8 *)(ip6h + 1);
@@ -1115,7 +1115,7 @@ static int br_ip4_multicast_query(struct net_bridge *br,
                                  struct net_bridge_port *port,
                                  struct sk_buff *skb)
 {
-       struct iphdr *iph = ip_hdr(skb);
+       const struct iphdr *iph = ip_hdr(skb);
        struct igmphdr *ih = igmp_hdr(skb);
        struct net_bridge_mdb_entry *mp;
        struct igmpv3_query *ih3;
@@ -1190,7 +1190,7 @@ static int br_ip6_multicast_query(struct net_bridge *br,
                                  struct net_bridge_port *port,
                                  struct sk_buff *skb)
 {
-       struct ipv6hdr *ip6h = ipv6_hdr(skb);
+       const struct ipv6hdr *ip6h = ipv6_hdr(skb);
        struct mld_msg *mld = (struct mld_msg *) icmp6_hdr(skb);
        struct net_bridge_mdb_entry *mp;
        struct mld2_query *mld2q;
@@ -1198,7 +1198,7 @@ static int br_ip6_multicast_query(struct net_bridge *br,
        struct net_bridge_port_group __rcu **pp;
        unsigned long max_delay;
        unsigned long now = jiffies;
-       struct in6_addr *group = NULL;
+       const struct in6_addr *group = NULL;
        int err = 0;
 
        spin_lock(&br->multicast_lock);
@@ -1356,7 +1356,7 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
                                 struct sk_buff *skb)
 {
        struct sk_buff *skb2 = skb;
-       struct iphdr *iph;
+       const struct iphdr *iph;
        struct igmphdr *ih;
        unsigned len;
        unsigned offset;
@@ -1452,7 +1452,7 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
                                 struct sk_buff *skb)
 {
        struct sk_buff *skb2;
-       struct ipv6hdr *ip6h;
+       const struct ipv6hdr *ip6h;
        struct icmp6hdr *icmp6h;
        u8 nexthdr;
        unsigned len;
@@ -1475,7 +1475,7 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
            ip6h->payload_len == 0)
                return 0;
 
-       len = ntohs(ip6h->payload_len);
+       len = ntohs(ip6h->payload_len) + sizeof(*ip6h);
        if (skb->len < len)
                return -EINVAL;