tree-wide: drop several missing_*.h and import relevant headers from kernel-5.0

src/network/netdev/fou-tunnel.h

@@ -1,12 +1,9 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
-#if HAVE_LINUX_FOU_H
 #include <linux/fou.h>
-#endif
 
 #include "in-addr-util.h"
-#include "missing_fou.h"
 #include "netdev/netdev.h"
 
 typedef enum FooOverUDPEncapType {

src/network/netdev/ipvlan.h

@@ -3,7 +3,6 @@
 
 #include <linux/if_link.h>
 
-#include "missing_if_link.h"
 #include "netdev/netdev.h"
 
 typedef enum IPVlanMode {

src/network/netdev/tunnel.c

@@ -1,15 +1,11 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 
 #include <arpa/inet.h>
-#include <net/if.h>
+#include <linux/fou.h>
 #include <linux/ip.h>
 #include <linux/if_tunnel.h>
 #include <linux/ip6_tunnel.h>
 
-#if HAVE_LINUX_FOU_H
-#include <linux/fou.h>
-#endif
-
 #include "sd-netlink.h"
 
 #include "conf-parser.h"

src/network/netdev/vxcan.c

@@ -1,10 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 
-#if HAVE_LINUX_CAN_VXCAN_H
 #include <linux/can/vxcan.h>
-#endif
 
-#include "missing.h"
 #include "netdev/vxcan.h"
 
 static int netdev_vxcan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {

src/network/netdev/wireguard.c

@@ -23,7 +23,6 @@
 #include "resolve-private.h"
 #include "string-util.h"
 #include "strv.h"
-#include "wireguard-netlink.h"
 #include "wireguard.h"
 
 static void resolve_endpoints(NetDev *netdev);

src/network/netdev/wireguard.h

@@ -2,10 +2,11 @@
 
 typedef struct Wireguard Wireguard;
 
+#include <linux/wireguard.h>
+
 #include "in-addr-util.h"
 #include "netdev.h"
 #include "socket-util.h"
-#include "wireguard-netlink.h"
 
 typedef struct WireguardIPmask {
         uint16_t family;