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authorLorenzo Bianconi <lorenzo.bianconi@redhat.com>2017-12-22 15:10:18 +0100
committerDavid S. Miller <davem@davemloft.net>2017-12-27 12:11:51 -0500
commitf15bc54eeecd86dfba3885aab839cd1f45172a38 (patch)
treeb0ce5e53ca229d324ba653f64b9cc4ac34dd8e4b /net/l2tp/l2tp_core.h
parent820da5357572715c6235ba3b3daa2d5b43a1198f (diff)
l2tp: add peer_offset parameter
Introduce peer_offset parameter in order to add the capability to specify two different values for payload offset on tx/rx side. If just offset is provided by userspace use it for rx side as well in order to maintain compatibility with older l2tp versions Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp/l2tp_core.h')
-rw-r--r--net/l2tp/l2tp_core.h13
1 files changed, 10 insertions, 3 deletions
diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h
index 9534e16965cc..c6fe7cc42a05 100644
--- a/net/l2tp/l2tp_core.h
+++ b/net/l2tp/l2tp_core.h
@@ -59,7 +59,8 @@ struct l2tp_session_cfg {
int debug; /* bitmask of debug message
* categories */
u16 vlan_id; /* VLAN pseudowire only */
- u16 offset; /* offset to payload */
+ u16 offset; /* offset to tx payload */
+ u16 peer_offset; /* offset to rx payload */
u16 l2specific_len; /* Layer 2 specific length */
u16 l2specific_type; /* Layer 2 specific type */
u8 cookie[8]; /* optional cookie */
@@ -86,8 +87,14 @@ struct l2tp_session {
int cookie_len;
u8 peer_cookie[8];
int peer_cookie_len;
- u16 offset; /* offset from end of L2TP header
- to beginning of data */
+ u16 offset; /* offset from end of L2TP
+ * header to beginning of
+ * tx data
+ */
+ u16 peer_offset; /* offset from end of L2TP
+ * header to beginning of
+ * rx data
+ */
u16 l2specific_len;
u16 l2specific_type;
u16 hdr_len;