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authorMasahide NAKAMURA <nakam@linux-ipv6.org>2006-08-23 18:11:50 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 15:06:41 -0700
commit1b5c229987dc4d0c92a38fac0cde2aeec08cd775 (patch)
tree5726243af6aa7194f1ed65e0340539e1ee5c6a42 /include/net/dst.h
parent99505a843673faeae962a8cde128c7c034ba6b5e (diff)
[XFRM] STATE: Support non-fragment outbound transformation headers.
For originated outbound IPv6 packets which will fragment, ip6_append_data() should know length of extension headers before sending them and the length is carried by dst_entry. IPv6 IPsec headers fragment then transformation was designed to place all headers after fragment header. OTOH Mobile IPv6 extension headers do not fragment then it is a good idea to make dst_entry have non-fragment length to tell it to ip6_append_data(). Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/dst.h')
-rw-r--r--include/net/dst.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/dst.h b/include/net/dst.h
index 36d54fc248b0..a8d825f90305 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -54,6 +54,7 @@ struct dst_entry
unsigned long expires;
unsigned short header_len; /* more space at head required */
+ unsigned short nfheader_len; /* more non-fragment space at head required */
unsigned short trailer_len; /* space to reserve at tail */
u32 metrics[RTAX_MAX];