freebsd_network: Implement SYSINIT.

Based on the already-existing linkersets framework, which seems to
work pretty well for the atheroswifi driver, so it should work for
this case also.

src/libs/compat/freebsd_network/Jamfile

@@ -47,6 +47,7 @@ KernelStaticLibrary libfreebsd_network.a :
 	subr_autoconf.cpp
 	synch.c
 	systm.cpp
+	sysinit.c
 	taskqueue.c
 	unit.cpp
 	;

src/libs/compat/freebsd_network/compat/sys/kernel.h

@@ -32,24 +32,45 @@ int32_t get_ticks();
 #define usecs_to_ticks(t) (((bigtime_t)t*hz) / 1000000)
 
 
-typedef void (*system_init_func_t)(void *);
-
-struct __system_init {
-	system_init_func_t func;
+/* sysinit */
+enum sysinit_elem_order {
+	SI_ORDER_FIRST = 0x0000000,
+	SI_ORDER_SECOND = 0x0000001,
+	SI_ORDER_THIRD = 0x0000002,
+	SI_ORDER_FOURTH = 0x0000003,
+	SI_ORDER_MIDDLE = 0x1000000,
+	SI_ORDER_ANY = 0xfffffff	/* last */
 };
 
-/* TODO implement SYSINIT/SYSUNINIT subsystem */
-#define SYSINIT(uniquifier, subsystem, order, func, ident) \
-	struct __system_init __init_##uniquifier = { (system_init_func_t) func }
+typedef void (*system_init_func_t)(void *);
 
-#define SYSUNINIT(uniquifier, subsystem, order, func, ident) \
-	struct __system_init __uninit_##uniquifier = { (system_init_func_t) func }
-
-
-#define TUNABLE_INT(path, var)
-#define TUNABLE_INT_FETCH(path, var)
+struct sysinit {
+	const char* name;
+	enum sysinit_elem_order order;
+	system_init_func_t func;
+	const void* arg;
+};
+
+#define SYSINIT(uniquifier, subsystem, _order, _func, ident) \
+static struct sysinit sysinit_##uniquifier = { \
+	.name 		= #uniquifier,		\
+	.order 		= _order,			\
+	.func		= _func,			\
+	.arg		= ident,			\
+};									\
+DATA_SET(__freebsd_sysinit, sysinit_##uniquifier)
+
+#define SYSUNINIT(uniquifier, subsystem, _order, _func, ident) \
+static struct sysinit sysuninit_##uniquifier = { \
+	.name 		= #uniquifier,		\
+	.order 		= _order,			\
+	.func		= _func,			\
+	.arg		= ident,			\
+};									\
+DATA_SET(__freebsd_sysuninit, sysuninit_##uniquifier)
 
 
+/* confighooks */
 typedef void (*ich_func_t)(void *_arg);
 
 struct intr_config_hook {
@@ -62,4 +83,9 @@ int config_intrhook_establish(struct intr_config_hook *hook);
 void config_intrhook_disestablish(struct intr_config_hook *hook);
 
 
+/* misc. */
+#define TUNABLE_INT(path, var)
+#define TUNABLE_INT_FETCH(path, var)
+
+
 #endif // _FBSD_COMPAT_SYS_KERNEL_H_

src/libs/compat/freebsd_network/driver.c

@@ -13,6 +13,7 @@
 
 
 #include "device.h"
+#include "sysinit.h"
 
 #include <stdlib.h>
 #include <sys/sockio.h>
@@ -133,6 +134,8 @@ _fbsd_init_drivers(driver_t *drivers[])
 			goto err5;
 	}
 
+	init_sysinit();
+
 	status = init_wlan_stack();
 	if (status < B_OK)
 		goto err6;
@@ -194,9 +197,11 @@ err7:
 	uninit_wlan_stack();
 
 err6:
+	uninit_sysinit();
 	if (HAIKU_DRIVER_REQUIRES(FBSD_TASKQUEUES))
 		uninit_taskqueues();
 err5:
+	uninit_bounce_pages();
 	uninit_callout();
 err4:
 	uninit_mbufs();
@@ -224,6 +229,7 @@ _fbsd_uninit_drivers(driver_t *drivers[])
 	}
 
 	uninit_wlan_stack();
+	uninit_sysinit();
 	if (HAIKU_DRIVER_REQUIRES(FBSD_TASKQUEUES))
 		uninit_taskqueues();
 	uninit_bounce_pages();

src/libs/compat/freebsd_network/sysinit.c

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2018, Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#include "sysinit.h"
+
+#include <sys/cdefs.h>
+#include <sys/kernel.h>
+
+
+//#define TRACE_SYSINIT
+#ifdef TRACE_SYSINIT
+#	define TRACE(x...) dprintf(x)
+#else
+#	define TRACE(x...)
+#endif
+
+
+/* linker sets */
+SET_DECLARE(__freebsd_sysinit, struct sysinit);
+SET_DECLARE(__freebsd_sysuninit, struct sysinit);
+
+/* make sure there's something in both linker sets, so we can link */
+SYSINIT(__dummy, 0, 0, NULL, NULL);
+SYSUNINIT(__dummy, 0, 0, NULL, NULL);
+
+
+void
+init_sysinit()
+{
+	struct sysinit* const* initee;
+	const enum sysinit_elem_order orders[6] = {
+		SI_ORDER_FIRST, SI_ORDER_SECOND, SI_ORDER_THIRD, SI_ORDER_FOURTH,
+		SI_ORDER_MIDDLE, SI_ORDER_ANY,
+	};
+	uint32 i;
+
+	for (i = 0; i < 6; i++) {
+		SET_FOREACH(initee, __freebsd_sysinit) {
+			if ((*initee)->order != orders[i] || (*initee)->func == NULL)
+				continue;
+			TRACE("sysinit: %d, %d, %s\n", orders[i], (*initee)->order,
+				(*initee)->name);
+			(*initee)->func((*initee)->arg);
+		}
+	}
+}
+
+
+void
+uninit_sysinit()
+{
+	struct sysinit* const* initee;
+	const enum sysinit_elem_order orders[6] = {
+		SI_ORDER_FIRST, SI_ORDER_SECOND, SI_ORDER_THIRD, SI_ORDER_FOURTH,
+		SI_ORDER_MIDDLE, SI_ORDER_ANY,
+	};
+	uint32 i;
+
+	for (i = 5; i >= 0; i--) {
+		SET_FOREACH(initee, __freebsd_sysuninit) {
+			if ((*initee)->order != orders[i] || (*initee)->func == NULL)
+				continue;
+			TRACE("sysinit: de-initializing %s\n", (*initee)->name);
+			(*initee)->func((*initee)->arg);
+		}
+	}
+}

src/libs/compat/freebsd_network/sysinit.h

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2018, Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef SYSINIT_H
+#define SYSINIT_H
+
+
+void init_sysinit();
+void uninit_sysinit();
+
+
+#endif /* SYSINIT_H */