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-rw-r--r--net/ipv4/xfrm4_mode_beet.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/net/ipv4/xfrm4_mode_beet.c b/net/ipv4/xfrm4_mode_beet.c
index f8544b7f02d..b94775a8686 100644
--- a/net/ipv4/xfrm4_mode_beet.c
+++ b/net/ipv4/xfrm4_mode_beet.c
@@ -83,24 +83,24 @@ static int xfrm4_beet_input(struct xfrm_state *x, struct sk_buff *skb)
if (!pskb_may_pull(skb, sizeof(*ph)))
goto out;
- phlen = ph->hdrlen * 8;
- optlen = phlen - ph->padlen - sizeof(*ph);
+ phlen = sizeof(*ph) + ph->padlen;
+ optlen = ph->hdrlen * 8 - phlen;
if (optlen < 0 || optlen & 3 || optlen > 250)
goto out;
- if (!pskb_may_pull(skb, phlen))
+ if (!pskb_may_pull(skb, phlen + optlen))
goto out;
ph_nexthdr = ph->nexthdr;
}
- skb_push(skb, sizeof(*iph) - phlen + optlen);
- memmove(skb->data, skb->nh.raw, sizeof(*iph));
- skb->nh.raw = skb->data;
+ skb->nh.raw = skb->data + (phlen - sizeof(*iph));
+ memmove(skb->nh.raw, iph, sizeof(*iph));
+ skb->h.raw = skb->data + (phlen + optlen);
iph = skb->nh.iph;
iph->ihl = (sizeof(*iph) + optlen) / 4;
- iph->tot_len = htons(skb->len);
+ iph->tot_len = htons(skb->len + iph->ihl * 4);
iph->daddr = x->sel.daddr.a4;
iph->saddr = x->sel.saddr.a4;
if (ph_nexthdr)