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

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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: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-12-02 21:00:06 -08:00
parent 97be852f81
commit d54a81d341
1 changed files with 12 additions and 4 deletions
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16
net/ipv6/ndisc.c
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@ -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