Revert "xfrm: add SA information to the offloaded packet"

This reverts commit e7cd191.

While supporting xfrm interfaces in the packet offload API
is needed, this patch does not do the right thing. There are
more things to do to really support xfrm interfaces, so revert
it for now.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

net/xfrm/xfrm_output.c

@@ -706,8 +706,6 @@ int xfrm_output(struct sock *sk, struct sk_buff *skb)
 	struct xfrm_state *x = skb_dst(skb)->xfrm;
 	int family;
 	int err;
-	struct xfrm_offload *xo;
-	struct sec_path *sp;
 
 	family = (x->xso.type != XFRM_DEV_OFFLOAD_PACKET) ? x->outer_mode.family
 		: skb_dst(skb)->ops->family;
@@ -730,25 +728,6 @@ int xfrm_output(struct sock *sk, struct sk_buff *skb)
 			kfree_skb(skb);
 			return -EHOSTUNREACH;
 		}
-		sp = secpath_set(skb);
-		if (!sp) {
-			XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
-			kfree_skb(skb);
-			return -ENOMEM;
-		}
-
-		sp->olen++;
-		sp->xvec[sp->len++] = x;
-		xfrm_state_hold(x);
-
-		xo = xfrm_offload(skb);
-		if (!xo) {
-			secpath_reset(skb);
-			XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
-			kfree_skb(skb);
-			return -EINVAL;
-		}
-		xo->flags |= XFRM_XMIT;
 
 		return xfrm_output_resume(sk, skb, 0);
 	}