tree-wide: Introduce sd-forward.h and shared-forward.h headers

Let's not leak details from src/shared and src/libsystemd into
src/basic, even though you can't actually do anything useful with
just forward declarations from src/shared.

The sd-forward.h header is put in src/libsystemd/sd-common as we
don't have a directory for shared internal headers for libsystemd
yet.

Let's also rename forward.h to basic-forward.h to keep things
self-explanatory.

src/network/netdev/bareudp.h

@@ -2,7 +2,7 @@
  * Copyright © 2020 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 typedef enum BareUDPProtocol {

src/network/netdev/batadv.h

@@ -4,7 +4,7 @@
 
 #include <linux/batman_adv.h>
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 #define BATADV_GENL_NAME "batadv"

src/network/netdev/bond.h

@@ -2,7 +2,7 @@
 #pragma once
 
 #include "bond-util.h"
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 typedef struct Bond {

src/network/netdev/bridge.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 #define LINK_BRIDGE_PORT_PRIORITY_INVALID 128U

src/network/netdev/dummy.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 typedef struct Dummy {

src/network/netdev/fou-tunnel.h

@@ -4,7 +4,7 @@
 #include <linux/fou.h>
 
 #include "in-addr-util.h"
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 typedef enum FooOverUDPEncapType {

src/network/netdev/geneve.h

@@ -3,7 +3,7 @@
 
 #include <linux/if_link.h>
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "in-addr-util.h"
 #include "netdev.h"
 

src/network/netdev/l2tp-tunnel.h

@@ -4,7 +4,7 @@
 #include <linux/l2tp.h>
 
 #include "in-addr-util.h"
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 typedef enum L2tpL2specType {

src/network/netdev/macsec.h

@@ -4,7 +4,7 @@
 #include <linux/if_macsec.h>
 #include <net/ethernet.h>
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 #include "sparse-endian.h"
 

src/network/netdev/tunnel.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "fou-tunnel.h"
 #include "netdev.h"
 #include "networkd-link.h"

src/network/netdev/tuntap.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 typedef struct TunTap {

src/network/netdev/vlan.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 typedef struct VLan {

src/network/netdev/wlan.h

@@ -3,7 +3,7 @@
 
 #include <linux/nl80211.h>
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 typedef struct WLan {

src/network/netdev/xfrm.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "netdev.h"
 
 typedef struct Xfrm {

src/network/networkctl-dump-util.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 
 int dump_list(Table *table, const char *key, char * const *l);
 int ieee_oui(sd_hwdb *hwdb, const struct ether_addr *mac, char **ret);

src/network/networkctl-link-info.h

@@ -6,7 +6,7 @@
 
 #include "ether-addr-util.h"
 #include "ethtool-util.h"
-#include "forward.h"
+#include "shared-forward.h"
 #include "in-addr-util.h"
 
 typedef struct VxLanInfo {

src/network/networkctl-lldp.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 
 int dump_lldp_neighbors(sd_varlink *vl, Table *table, int ifindex);
 int link_lldp_status(int argc, char *argv[], void *userdata);

src/network/networkctl-status-system.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 
 int system_status(sd_netlink *rtnl, sd_hwdb *hwdb);

src/network/networkctl-util.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 
 int varlink_connect_networkd(sd_varlink **ret_varlink);
 bool networkd_is_running(void);

src/network/networkctl.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "pager.h"
 
 extern PagerFlags arg_pager_flags;

src/network/networkd-address.h

@@ -2,7 +2,7 @@
 #pragma once
 
 #include "firewall-util.h"
-#include "forward.h"
+#include "shared-forward.h"
 #include "in-addr-util.h"
 #include "networkd-forward.h"
 #include "networkd-util.h"

src/network/networkd-bridge-fdb.h

@@ -8,7 +8,7 @@
 #include <linux/neighbour.h>
 #include <net/ethernet.h>
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "in-addr-util.h"
 #include "networkd-forward.h"
 

src/network/networkd-forward.h

@@ -2,7 +2,7 @@
 #pragma once
 
 #include "conf-parser-forward.h"    /* IWYU pragma: export */
-#include "forward.h"                /* IWYU pragma: export */
+#include "shared-forward.h"         /* IWYU pragma: export */
 
 typedef enum NetDevLocalAddressType NetDevLocalAddressType;
 typedef enum NetworkConfigSource NetworkConfigSource;

src/network/networkd-link.h

@@ -4,7 +4,7 @@
 #include <linux/nl80211.h>
 
 #include "ether-addr-util.h"
-#include "forward.h"
+#include "shared-forward.h"
 #include "network-util.h"
 #include "networkd-bridge-vlan.h"
 #include "networkd-forward.h"

src/network/tc/drr.h

@@ -2,7 +2,7 @@
  * Copyright © 2020 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 #include "tclass.h"
 

src/network/tc/ets.h

@@ -3,7 +3,7 @@
 
 #include <linux/pkt_sched.h>
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct EnhancedTransmissionSelection {

src/network/tc/fifo.h

@@ -2,7 +2,7 @@
  * Copyright © 2020 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct FirstInFirstOut {

src/network/tc/fq-codel.h

@@ -2,7 +2,7 @@
  * Copyright © 2019 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct FairQueueingControlledDelay {

src/network/tc/fq-pie.h

@@ -2,7 +2,7 @@
  * Copyright © 2020 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct FlowQueuePIE {

src/network/tc/fq.h

@@ -2,7 +2,7 @@
  * Copyright © 2019 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct FairQueueing {

src/network/tc/gred.h

@@ -2,7 +2,7 @@
  * Copyright © 2020 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct GenericRandomEarlyDetection {

src/network/tc/hhf.h

@@ -2,7 +2,7 @@
  * Copyright © 2020 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct HeavyHitterFilter {

src/network/tc/htb.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 #include "tclass.h"
 

src/network/tc/mq.c

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "mq.h"
 
 const QDiscVTable mq_vtable = {

src/network/tc/mq.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct ClassfulMultiQueueing {

src/network/tc/multiq.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct BandMultiQueueing {

src/network/tc/netem.h

@@ -2,7 +2,7 @@
  * Copyright © 2019 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct NetworkEmulator {

src/network/tc/pie.h

@@ -2,7 +2,7 @@
  * Copyright © 2020 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct ProportionalIntegralControllerEnhanced {

src/network/tc/qfq.h

@@ -2,7 +2,7 @@
  * Copyright © 2020 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 #include "tclass.h"
 

src/network/tc/sfb.h

@@ -2,7 +2,7 @@
  * Copyright © 2020 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct StochasticFairBlue {

src/network/tc/sfq.h

@@ -2,7 +2,7 @@
  * Copyright © 2019 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct StochasticFairnessQueueing {

src/network/tc/tbf.h

@@ -2,7 +2,7 @@
  * Copyright © 2019 VMware, Inc. */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct TokenBucketFilter {

src/network/tc/tc-util.h

@@ -4,7 +4,7 @@
 
 #include <linux/pkt_sched.h>
 
-#include "forward.h"
+#include "shared-forward.h"
 
 int tc_init(double *ret_ticks_in_usec, uint32_t *ret_hz);
 int tc_time_to_tick(usec_t t, uint32_t *ret);

src/network/tc/teql.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "qdisc.h"
 
 typedef struct TrivialLinkEqualizer {

src/network/wait-online/dns-configuration.h

@@ -3,7 +3,7 @@
 
 #include <sys/uio.h>
 
-#include "forward.h"
+#include "shared-forward.h"
 
 typedef struct DNSServer {
         struct iovec addr;

src/network/wait-online/wait-online-link.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "network-util.h"
 
 typedef struct DNSConfiguration DNSConfiguration;

src/network/wait-online/wait-online-manager.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "forward.h"
+#include "shared-forward.h"
 #include "network-util.h"
 
 typedef struct DNSConfiguration DNSConfiguration;