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authorNicolas Dichtel <nicolas.dichtel@6wind.com>2013-02-22 10:54:54 +0100
committerSteffen Klassert <steffen.klassert@secunet.com>2013-03-06 07:02:45 +0100
commita947b0a93efa9a25c012aa88848f4cf8d9b41280 (patch)
treeca5ccc41834e4c811e859724a184f223a3772ca7 /include/net
parent6fac41157252220678b210fcb13e2c3dad7a912a (diff)
downloadlinux-a947b0a93efa9a25c012aa88848f4cf8d9b41280.tar.gz
xfrm: allow to avoid copying DSCP during encapsulation
By default, DSCP is copying during encapsulation. Copying the DSCP in IPsec tunneling may be a bit dangerous because packets with different DSCP may get reordered relative to each other in the network and then dropped by the remote IPsec GW if the reordering becomes too big compared to the replay window. It is possible to avoid this copy with netfilter rules, but it's very convenient to be able to configure it for each SA directly. This patch adds a toogle for this purpose. By default, it's not set to maintain backward compatibility. Field flags in struct xfrm_usersa_info is full, hence I add a new attribute. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/xfrm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 24c8886fd96..ae16531d0d3 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -162,6 +162,7 @@ struct xfrm_state {
xfrm_address_t saddr;
int header_len;
int trailer_len;
+ u32 extra_flags;
} props;
struct xfrm_lifetime_cfg lft;