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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-12-02 21:00:06 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-02 21:06:31 -0800 |
| commit | d54a81d341af80875c201890500f727c8188dd9b (patch) | |
| tree | 90ea4b2fe248fd3b0e10f846329868c12f8b4123 | |
| parent | 97be852f81c5bb114aab31974af2c061eb86a6de (diff) | |
| download | lwn-d54a81d341af80875c201890500f727c8188dd9b.tar.gz lwn-d54a81d341af80875c201890500f727c8188dd9b.zip | |
[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: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv6/ndisc.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 73eb8c33e9f0..89d527ebd7f6 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -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 |