[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>

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 084f78c3479b613686be280f694193d70c406dcf..88c96b10684c92efb7591aea9f584a604478ffae 100644 (file)
--- 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;
        }