networkd: rework headers to avoid circular includes

Header files were organized in a way where the includer would add various
typedefs used by the includee before including it, resulting in a tangled
web of dependencies between files.

Replace this with the following logic:

          networkd.h
         /          \
networkd-link.h      \
networkd-ipv4ll.h--\__\
networkd-fdb.h         \
networkd-network.h    netword-netdev-*.h
networkd-route.h           \
                      networkd-netdev.h

If a pointer to a structure defined in a different header file is needed,
use a typedef line instead of including the whole header.

1 files changed, 7 insertions, 4 deletions

diff --git a/src/network/networkd-network.h b/src/network/networkd-network.h
index 15417f4828..9b8096f9ae 100644
--- a/src/network/networkd-network.h
+++ b/src/network/networkd-network.h
@@ -19,18 +19,19 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include "sd-bus.h"
+#include "udev.h"
+
 #include "condition.h"
+#include "dhcp-identifier.h"
+#include "hashmap.h"
 #include "resolve-util.h"
 
-typedef struct Network Network;
-
-#include "dhcp-identifier.h"
 #include "networkd-address.h"
 #include "networkd-fdb.h"
 #include "networkd-netdev.h"
 #include "networkd-route.h"
 #include "networkd-util.h"
-#include "networkd.h"
 
 #define DHCP_ROUTE_METRIC 1024
 #define IPV4LL_ROUTE_METRIC 2048
@@ -67,6 +68,8 @@ typedef enum LLDPMode {
         _LLDP_MODE_INVALID = -1,
 } LLDPMode;
 
+typedef struct Manager Manager;
+
 struct Network {
         Manager *manager;