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authorSteffen Klassert <steffen.klassert@secunet.com>2017-04-14 11:06:01 +0300
committerSteffen Klassert <steffen.klassert@secunet.com>2017-04-14 11:06:01 +0300
commitc35fe4106b928d0a5909cfdac53c1db559b24299 (patch)
treeeeaebe39a98ae156227b92412c2cb46c0de88900 /net/ipv6/xfrm6_mode_tunnel.c
parent21f42cc95f07c1d7827b339c04442e147411e44b (diff)
downloadlinux-c35fe4106b928d0a5909cfdac53c1db559b24299.tar.xz
xfrm: Add mode handlers for IPsec on layer 2
This patch adds a gso_segment and xmit callback for the xfrm_mode and implement these functions for tunnel and transport mode. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv6/xfrm6_mode_tunnel.c')
-rw-r--r--net/ipv6/xfrm6_mode_tunnel.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index 372855eeaf42..19a60fc4c29b 100644
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -96,11 +96,35 @@ out:
return err;
}
+static struct sk_buff *xfrm6_mode_tunnel_gso_segment(struct xfrm_state *x,
+ struct sk_buff *skb,
+ netdev_features_t features)
+{
+ __skb_push(skb, skb->mac_len);
+ return skb_mac_gso_segment(skb, features);
+
+}
+
+static void xfrm6_mode_tunnel_xmit(struct xfrm_state *x, struct sk_buff *skb)
+{
+ struct xfrm_offload *xo = xfrm_offload(skb);
+
+ if (xo->flags & XFRM_GSO_SEGMENT) {
+ skb->network_header = skb->network_header - x->props.header_len;
+ skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
+ }
+
+ skb_reset_mac_len(skb);
+ pskb_pull(skb, skb->mac_len + x->props.header_len);
+}
+
static struct xfrm_mode xfrm6_tunnel_mode = {
.input2 = xfrm6_mode_tunnel_input,
.input = xfrm_prepare_input,
.output2 = xfrm6_mode_tunnel_output,
.output = xfrm6_prepare_output,
+ .gso_segment = xfrm6_mode_tunnel_gso_segment,
+ .xmit = xfrm6_mode_tunnel_xmit,
.owner = THIS_MODULE,
.encap = XFRM_MODE_TUNNEL,
.flags = XFRM_MODE_FLAG_TUNNEL,