[IPV6] MIP6: Fix to update IP6CB when cloned skbuff is received at HAO.

Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 084f78c3479b..88c96b10684c 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -233,9 +233,14 @@ static int ipv6_dest_hao(struct sk_buff **skbp, int optoff)
 
         if (skb_cloned(skb)) {
                 struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
+                struct inet6_skb_parm *opt2;
+
                 if (skb2 == NULL)
                         goto discard;
 
+                opt2 = IP6CB(skb2);
+                memcpy(opt2, opt, sizeof(*opt2));
+
                 kfree_skb(skb);
 
                 /* update all variable using below by copied skbuff */
@@ -296,6 +301,7 @@ static int ipv6_destopt_rcv(struct sk_buff **skbp)
         if (ip6_parse_tlv(tlvprocdestopt_lst, skbp)) {
                 skb = *skbp;
                 skb->h.raw += ((skb->h.raw[1]+1)<<3);
+                opt = IP6CB(skb);
 #ifdef CONFIG_IPV6_MIP6
                 opt->nhoff = dstbuf;
 #else
@@ -690,6 +696,7 @@ int ipv6_parse_hopopts(struct sk_buff **skbp)
         if (ip6_parse_tlv(tlvprochopopt_lst, skbp)) {
                 skb = *skbp;
                 skb->h.raw += (skb->h.raw[1]+1)<<3;
+                opt = IP6CB(skb);
                 opt->nhoff = sizeof(struct ipv6hdr);
                 return 1;
         }