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Commit d54a81d3 authored by David S. Miller's avatar David S. Miller
Browse files

[IPV6] NDISC: Calculate packet length correctly for allocation. 



MAX_HEADER does not include the ipv6 header length in it,
so we need to add it in explicitly.

With help from YOSHIFUJI Hideaki.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 97be852f

net/ipv6/ndisc.c

+12 −4
Original line number Diff line number Diff line
@@ -472,7 +472,9 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh, 
			inc_opt = 0;

	}



	skb = sock_alloc_send_skb(sk, MAX_HEADER + len + LL_RESERVED_SPACE(dev),

	skb = sock_alloc_send_skb(sk,

				  (MAX_HEADER + sizeof(struct ipv6hdr) +

				   len + LL_RESERVED_SPACE(dev)),

				  1, &err);



	if (skb == NULL) {
@@ -561,7 +563,9 @@ void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh, 
	if (send_llinfo)

		len += ndisc_opt_addr_space(dev);



	skb = sock_alloc_send_skb(sk, MAX_HEADER + len + LL_RESERVED_SPACE(dev),

	skb = sock_alloc_send_skb(sk,

				  (MAX_HEADER + sizeof(struct ipv6hdr) +

				   len + LL_RESERVED_SPACE(dev)),

				  1, &err);

	if (skb == NULL) {

		ND_PRINTK0(KERN_ERR
@@ -636,7 +640,9 @@ void ndisc_send_rs(struct net_device *dev, struct in6_addr *saddr, 
	if (dev->addr_len)

		len += ndisc_opt_addr_space(dev);



        skb = sock_alloc_send_skb(sk, MAX_HEADER + len + LL_RESERVED_SPACE(dev),

        skb = sock_alloc_send_skb(sk,

				  (MAX_HEADER + sizeof(struct ipv6hdr) +

				   len + LL_RESERVED_SPACE(dev)),

				  1, &err);

	if (skb == NULL) {

		ND_PRINTK0(KERN_ERR
@@ -1446,7 +1452,9 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh, 
	rd_len &= ~0x7;

	len += rd_len;



	buff = sock_alloc_send_skb(sk, MAX_HEADER + len + LL_RESERVED_SPACE(dev),

	buff = sock_alloc_send_skb(sk,

				   (MAX_HEADER + sizeof(struct ipv6hdr) +

				    len + LL_RESERVED_SPACE(dev)),

				   1, &err);

	if (buff == NULL) {

		ND_PRINTK0(KERN_ERR