[WANROUTER]: Use LL_RESERVED_SPACE() where applicable.

net/wanrouter/af_wanpipe.c

@@ -591,14 +591,14 @@ static int wanpipe_sendmsg(struct kiocb *iocb, struct socket *sock,
   		return -EMSGSIZE;
 	}
 
-	skb = sock_alloc_send_skb(sk, len+dev->hard_header_len+15, 
+	skb = sock_alloc_send_skb(sk, len + LL_RESERVED_SPACE(dev),
 				msg->msg_flags & MSG_DONTWAIT, &err);
 
 	if (skb==NULL){
 		goto out_unlock;
 	}
 		
-	skb_reserve(skb, (dev->hard_header_len+15)&~15);
+	skb_reserve(skb, LL_RESERVED_SPACE(dev));
 	skb->nh.raw = skb->data;
 
 	/* Returns -EFAULT on error */