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Diffstat (limited to 'net/ipv6/af_inet6.c')
-rw-r--r--net/ipv6/af_inet6.c31
1 files changed, 26 insertions, 5 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 94f74f5b0cb..9c8309ed35c 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -72,6 +72,10 @@ MODULE_LICENSE("GPL");
static struct list_head inetsw6[SOCK_MAX];
static DEFINE_SPINLOCK(inetsw6_lock);
+static int disable_ipv6 = 0;
+module_param_named(disable, disable_ipv6, int, 0);
+MODULE_PARM_DESC(disable, "Disable IPv6 such that it is non-functional");
+
static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk)
{
const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo);
@@ -797,6 +801,7 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
unsigned int nlen;
int flush = 1;
int proto;
+ __wsum csum;
if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
goto out;
@@ -808,6 +813,7 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
rcu_read_lock();
proto = ipv6_gso_pull_exthdrs(skb, iph->nexthdr);
+ iph = ipv6_hdr(skb);
IPV6_GRO_CB(skb)->proto = proto;
ops = rcu_dereference(inet6_protos[proto]);
if (!ops || !ops->gro_receive)
@@ -839,8 +845,13 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
NAPI_GRO_CB(skb)->flush |= flush;
+ csum = skb->csum;
+ skb_postpull_rcsum(skb, iph, skb_network_header_len(skb));
+
pp = ops->gro_receive(head, skb);
+ skb->csum = csum;
+
out_unlock:
rcu_read_unlock();
@@ -984,10 +995,21 @@ static int __init inet6_init(void)
{
struct sk_buff *dummy_skb;
struct list_head *r;
- int err;
+ int err = 0;
BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb));
+ /* Register the socket-side information for inet6_create. */
+ for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
+ INIT_LIST_HEAD(r);
+
+ if (disable_ipv6) {
+ printk(KERN_INFO
+ "IPv6: Loaded, but administratively disabled, "
+ "reboot required to enable\n");
+ goto out;
+ }
+
err = proto_register(&tcpv6_prot, 1);
if (err)
goto out;
@@ -1005,10 +1027,6 @@ static int __init inet6_init(void)
goto out_unregister_udplite_proto;
- /* Register the socket-side information for inet6_create. */
- for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
- INIT_LIST_HEAD(r);
-
/* We MUST register RAW sockets before we create the ICMP6,
* IGMP6, or NDISC control sockets.
*/
@@ -1174,6 +1192,9 @@ 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 */