summaryrefslogtreecommitdiffstats
path: root/net/ipv6/af_inet6.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/ipv6/af_inet6.c')
-rw-r--r--net/ipv6/af_inet6.c63
1 files changed, 47 insertions, 16 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index da944eca2ca..61f55386a23 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -276,11 +276,26 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
/* Check if the address belongs to the host. */
if (addr_type == IPV6_ADDR_MAPPED) {
- v4addr = addr->sin6_addr.s6_addr32[3];
- if (inet_addr_type(net, v4addr) != RTN_LOCAL) {
- err = -EADDRNOTAVAIL;
+ int chk_addr_ret;
+
+ /* Binding to v4-mapped address on a v6-only socket
+ * makes no sense
+ */
+ if (np->ipv6only) {
+ err = -EINVAL;
goto out;
}
+
+ /* Reproduce AF_INET checks to make the bindings consitant */
+ v4addr = addr->sin6_addr.s6_addr32[3];
+ chk_addr_ret = inet_addr_type(net, v4addr);
+ if (!sysctl_ip_nonlocal_bind &&
+ !(inet->freebind || inet->transparent) &&
+ v4addr != htonl(INADDR_ANY) &&
+ chk_addr_ret != RTN_LOCAL &&
+ chk_addr_ret != RTN_MULTICAST &&
+ chk_addr_ret != RTN_BROADCAST)
+ goto out;
} else {
if (addr_type != IPV6_ADDR_ANY) {
struct net_device *dev = NULL;
@@ -339,8 +354,11 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
goto out;
}
- if (addr_type != IPV6_ADDR_ANY)
+ if (addr_type != IPV6_ADDR_ANY) {
sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
+ if (addr_type != IPV6_ADDR_MAPPED)
+ np->ipv6only = 1;
+ }
if (snum)
sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
inet->sport = htons(inet->num);
@@ -803,24 +821,34 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
int proto;
__wsum csum;
- if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
+ iph = skb_gro_header(skb, sizeof(*iph));
+ if (unlikely(!iph))
goto out;
- iph = ipv6_hdr(skb);
- __skb_pull(skb, sizeof(*iph));
+ skb_gro_pull(skb, sizeof(*iph));
+ skb_set_transport_header(skb, skb_gro_offset(skb));
- flush += ntohs(iph->payload_len) != skb->len;
+ flush += ntohs(iph->payload_len) != skb_gro_len(skb);
rcu_read_lock();
- proto = ipv6_gso_pull_exthdrs(skb, iph->nexthdr);
- iph = ipv6_hdr(skb);
- IPV6_GRO_CB(skb)->proto = proto;
+ proto = iph->nexthdr;
ops = rcu_dereference(inet6_protos[proto]);
- if (!ops || !ops->gro_receive)
- goto out_unlock;
+ if (!ops || !ops->gro_receive) {
+ __pskb_pull(skb, skb_gro_offset(skb));
+ proto = ipv6_gso_pull_exthdrs(skb, proto);
+ skb_gro_pull(skb, -skb_transport_offset(skb));
+ skb_reset_transport_header(skb);
+ __skb_push(skb, skb_gro_offset(skb));
+
+ if (!ops || !ops->gro_receive)
+ goto out_unlock;
+
+ iph = ipv6_hdr(skb);
+ }
+
+ IPV6_GRO_CB(skb)->proto = proto;
flush--;
- skb_reset_transport_header(skb);
nlen = skb_network_header_len(skb);
for (p = *head; p; p = p->next) {
@@ -883,8 +911,8 @@ out_unlock:
return err;
}
-static struct packet_type ipv6_packet_type = {
- .type = __constant_htons(ETH_P_IPV6),
+static struct packet_type ipv6_packet_type __read_mostly = {
+ .type = cpu_to_be16(ETH_P_IPV6),
.func = ipv6_rcv,
.gso_send_check = ipv6_gso_send_check,
.gso_segment = ipv6_gso_segment,
@@ -1192,6 +1220,9 @@ module_init(inet6_init);
static void __exit inet6_exit(void)
{
+ if (disable_ipv6)
+ return;
+
/* First of all disallow new sockets creation. */
sock_unregister(PF_INET6);
/* Disallow any further netlink messages */