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| author | Masahide NAKAMURA <nakam@linux-ipv6.org> | 2006-08-23 18:11:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-22 15:06:41 -0700 |
| commit | 1b5c229987dc4d0c92a38fac0cde2aeec08cd775 (patch) | |
| tree | 5726243af6aa7194f1ed65e0340539e1ee5c6a42 /include/net | |
| parent | 99505a843673faeae962a8cde128c7c034ba6b5e (diff) | |
| download | linux-1b5c229987dc4d0c92a38fac0cde2aeec08cd775.tar.gz | |
[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')
| -rw-r--r-- | include/net/dst.h | 1 | ||||
| -rw-r--r-- | include/net/xfrm.h | 2 |
2 files changed, 3 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]; diff --git a/include/net/xfrm.h b/include/net/xfrm.h index aa3ac994477b..aa93cc1f6299 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -260,6 +260,8 @@ struct xfrm_type char *description; struct module *owner; __u8 proto; + __u8 flags; +#define XFRM_TYPE_NON_FRAGMENT 1 int (*init_state)(struct xfrm_state *x); void (*destructor)(struct xfrm_state *); |