[XFRM] IPv6: Fix dst/routing check at transformation.

IPv6 specific thing is wrongly removed from transformation at net-2.6.25.
This patch recovers it with current design.

o Update "path" of xfrm_dst since IPv6 transformation should
  care about routing changes. It is required by MIPv6 and
  off-link destined IPsec.
o Rename nfheader_len which is for non-fragment transformation used by
  MIPv6 to rt6i_nfheader_len as IPv6 name space.

Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index d54da616e3af..4686646058d3 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1126,7 +1126,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
                 sk->sk_sndmsg_page = NULL;
                 sk->sk_sndmsg_off = 0;
                 exthdrlen = rt->u.dst.header_len + (opt ? opt->opt_flen : 0) -
-                            rt->nfheader_len;
+                            rt->rt6i_nfheader_len;
                 length += exthdrlen;
                 transhdrlen += exthdrlen;
         } else {
@@ -1141,7 +1141,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
 
         hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
 
-        fragheaderlen = sizeof(struct ipv6hdr) + rt->nfheader_len +
+        fragheaderlen = sizeof(struct ipv6hdr) + rt->rt6i_nfheader_len +
                         (opt ? opt->opt_nflen : 0);
         maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen - sizeof(struct frag_hdr);