[IPV6]: Only set nfheader_len for top xfrm dst
We only need to set nfheader_len in the top xfrm dst. This is because
we only ever read the nfheader_len from the top xfrm dst.
It is also easier to count nfheader_len as part of header_len which
then lets us remove the ugly wrapper functions for incrementing and
decrementing header lengths in xfrm6_policy.c.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 3bef30e..1506157 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1098,7 +1098,8 @@
inet->cork.length = 0;
sk->sk_sndmsg_page = NULL;
sk->sk_sndmsg_off = 0;
- exthdrlen = rt->u.dst.header_len + (opt ? opt->opt_flen : 0);
+ exthdrlen = rt->u.dst.header_len + (opt ? opt->opt_flen : 0) -
+ rt->u.dst.nfheader_len;
length += exthdrlen;
transhdrlen += exthdrlen;
} else {
