freebsd_network: Lots of additions and modifications for iflib.

src/libs/compat/freebsd_network/Condvar.cpp

@@ -79,3 +79,10 @@ publishedConditionNotifyAll(const void* waitChannel)
 {
 	ConditionVariable::NotifyAll(waitChannel, B_OK);
 }
+
+
+void
+publishedConditionNotifyOne(const void* waitChannel)
+{
+	ConditionVariable::NotifyOne(waitChannel, B_OK);
+}

src/libs/compat/freebsd_network/Condvar.h

@@ -18,6 +18,7 @@ void conditionWait(struct cv*);
 void conditionNotifyOne(struct cv*);
 int publishedConditionTimedWait(const void*, const int);
 void publishedConditionNotifyAll(const void*);
+void publishedConditionNotifyOne(const void*);
 
 #ifdef __cplusplus
 }

src/libs/compat/freebsd_network/bus.cpp

@@ -48,7 +48,7 @@ extern "C" {
 
 struct internal_intr {
 	device_t		dev;
-	driver_filter_t	filter;
+	driver_filter_t* filter;
 	driver_intr_t	*handler;
 	void			*arg;
 	int				irq;
@@ -325,7 +325,7 @@ free_internal_intr(struct internal_intr *intr)
 
 int
 bus_setup_intr(device_t dev, struct resource *res, int flags,
-	driver_filter_t filter, driver_intr_t handler, void *arg, void **_cookie)
+	driver_filter_t* filter, driver_intr_t handler, void *arg, void **_cookie)
 {
 	/* TODO check MPSAFE etc */
 

src/libs/compat/freebsd_network/compat.c

@@ -265,6 +265,13 @@ device_get_softc(device_t dev)
 }
 
 
+void
+device_set_softc(device_t dev, void *softc)
+{
+	dev->softc = softc;
+}
+
+
 u_int32_t
 device_get_flags(device_t dev)
 {
@@ -277,11 +284,11 @@ device_set_driver(device_t dev, driver_t *driver)
 {
 	int i;
 
-	dev->softc = malloc(driver->softc_size);
+	dev->softc = malloc(driver->size);
 	if (dev->softc == NULL)
 		return -1;
 
-	memset(dev->softc, 0, driver->softc_size);
+	memset(dev->softc, 0, driver->size);
 	dev->driver = driver;
 
 	for (i = 0; driver->methods[i].name != NULL; i++) {

src/libs/compat/freebsd_network/compat/dev/led/led.h

@@ -9,27 +9,27 @@
 typedef	void led_t(void*, int);
 
 
-static struct cdev*
+static inline struct cdev*
 led_create_state(led_t* func, void* priv, char const* name, int state)
 {
 	return NULL;
 }
 
 
-static struct cdev*
+static inline struct cdev*
 led_create(led_t* func, void* priv, char const* name)
 {
 	return NULL;
 }
 
 
-static void
+static inline void
 led_destroy(struct cdev* dev)
 {
 }
 
 
-static int
+static inline int
 led_set(char const* name, char const* cmd)
 {
 	return -1;

src/libs/compat/freebsd_network/compat/net/if.h

@@ -13,7 +13,7 @@
 #include <sys/time.h>
 
 
-#define IF_Kbps(x)				((x) * 1000)
+#define IF_Kbps(x)				((uintmax_t)(x) * 1000)
 #define IF_Mbps(x)				(IF_Kbps((x) * 1000))
 #define IF_Gbps(x)				(IF_Mbps((x) * 1000))
 
@@ -52,7 +52,7 @@
 
 #define	IFCAP_CANTCHANGE	(IFCAP_NETMAP)
 
-/* Interface flags */
+/* interface flags -- these extend the Haiku-native ones from posix/net/if.h */
 #define IFF_DRV_RUNNING		0x00010000
 #define IFF_DRV_OACTIVE		0x00020000
 #define IFF_LINK0			0x00040000		/* per link layer defined bit */
@@ -60,6 +60,7 @@
 #define	IFF_LINK2			0x00100000		/* per link layer defined bit */
 #define IFF_DEBUG			0x00200000
 #define	IFF_MONITOR			0x00400000		/* (n) user-requested monitor mode */
+#define	IFF_NOGROUP			0x00800000		/* (n) interface is not part of any groups */
 
 #define LINK_STATE_UNKNOWN	0
 #define LINK_STATE_DOWN		1
@@ -113,6 +114,19 @@ struct  ifdrv {
 	void*			ifd_data;
 };
 
+/*
+ * Structure used to request i2c data
+ * from interface transceivers.
+ */
+struct ifi2creq {
+	uint8_t dev_addr;	/* i2c address (0xA0, 0xA2) */
+	uint8_t offset;		/* read offset */
+	uint8_t len;		/* read length */
+	uint8_t spare0;
+	uint32_t spare1;
+	uint8_t data[8];	/* read buffer */
+};
+
 #ifdef _KERNEL
 /* TODO: this should go away soon. */
 #	include <net/if_var.h>

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

@@ -8,6 +8,7 @@
 
 
 #include <lock.h>
+#include <KernelExport.h>
 
 
 struct mtx {
@@ -18,6 +19,10 @@ struct mtx {
 			thread_id		owner;
 		}					mutex;
 		recursive_lock		recursive;
+		struct {
+			spinlock		lock;
+			cpu_status		state;
+		}					spinlock;
 	} u;
 };
 

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

@@ -78,7 +78,7 @@ int bus_generic_suspend(device_t dev);
 int bus_generic_resume(device_t dev);
 void bus_generic_shutdown(device_t dev);
 
-typedef int (*driver_filter_t)(void *);
+typedef int (driver_filter_t)(void *arg);
 typedef void driver_intr_t(void *);
 
 
@@ -113,7 +113,7 @@ bus_alloc_resource_anywhere(device_t dev, int type, int *rid,
 bus_dma_tag_t bus_get_dma_tag(device_t dev);
 
 int bus_setup_intr(device_t dev, struct resource *r, int flags,
-	driver_filter_t filter, driver_intr_t handler, void *arg, void **_cookie);
+	driver_filter_t* filter, driver_intr_t handler, void *arg, void **_cookie);
 int bus_teardown_intr(device_t dev, struct resource *r, void *cookie);
 int bus_bind_intr(device_t dev, struct resource *r, int cpu);
 int bus_describe_intr(device_t dev, struct resource *irq, void *cookie,
@@ -123,6 +123,7 @@ const char *device_get_name(device_t dev);
 const char *device_get_nameunit(device_t dev);
 int device_get_unit(device_t dev);
 void *device_get_softc(device_t dev);
+void device_set_softc(device_t dev, void *softc);
 int device_printf(device_t dev, const char *, ...) __printflike(2, 3);
 void device_set_desc(device_t dev, const char *desc);
 void device_set_desc_copy(device_t dev, const char *desc);

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

@@ -18,12 +18,14 @@
 
 void callout_init(struct callout *c, int mpsafe);
 void callout_init_mtx(struct callout *c, struct mtx *mutex, int flags);
-/* Time values are in ticks, see compat/sys/kernel.h for its definition */
 int callout_schedule(struct callout *c, int _ticks);
 int callout_reset(struct callout *c, int _ticks, void (*func)(void *), void *arg);
 int callout_pending(struct callout *c);
 int callout_active(struct callout *c);
 
+#define callout_reset_on(c, to_ticks, fn, arg, cpu) \
+	callout_reset(c, to_ticks, fn, arg)
+
 #define	callout_drain(c)	_callout_stop_safe(c, 1)
 #define	callout_stop(c)		_callout_stop_safe(c, 0)
 int	_callout_stop_safe(struct callout *c, int safe);

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

@@ -264,6 +264,21 @@
 #define	__format_arg(fmtarg)	__attribute__((__format_arg__ (fmtarg)))
 #endif
 
+/*
+ * C99 Static array indices in function parameter declarations.  Syntax such as:
+ * void bar(int myArray[static 10]);
+ * is allowed in C99 but not in C++.  Define __min_size appropriately so
+ * headers using it can be compiled in either language.  Use like this:
+ * void bar(int myArray[__min_size(10)]);
+ */
+#if !defined(__cplusplus) && \
+    (defined(__clang__) || __GNUC_PREREQ__(4, 6)) && \
+    (!defined(__STDC_VERSION__) || (__STDC_VERSION__ >= 199901))
+#define __min_size(x)	static (x)
+#else
+#define __min_size(x)	(x)
+#endif
+
 #if __GNUC_PREREQ__(3, 1)
 #define	__noinline	__attribute__ ((__noinline__))
 #else

src/libs/compat/freebsd_network/compat/sys/haiku-module.h

@@ -58,7 +58,7 @@ typedef struct device_method device_method_t;
 typedef struct {
 	const char *name;
 	device_method_t *methods;
-	size_t softc_size;
+	size_t size;
 } driver_t;
 
 #define DRIVER_MODULE_NAME(name, busname) \

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

@@ -0,0 +1 @@
+

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

@@ -0,0 +1,16 @@
+/*
+ * Copyright 2018, Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _FBSD_COMPAT_SYS_LOCK_H_
+#define _FBSD_COMPAT_SYS_LOCK_H_
+
+
+#define MPASS(ex)				MPASS4(ex, #ex, __FILE__, __LINE__)
+#define MPASS2(ex, what)		MPASS4(ex, what, __FILE__, __LINE__)
+#define MPASS3(ex, file, line)	MPASS4(ex, #ex, file, line)
+#define MPASS4(ex, what, file, line)					\
+	KASSERT((ex), ("assert %s failed at %s:%d", what, file, line))
+
+
+#endif /* _FBSD_COMPAT_SYS_LOCK_H_ */

src/libs/compat/freebsd_network/compat/sys/mbuf-fbsd.h

@@ -153,6 +153,65 @@ m_extrefcnt(struct mbuf *m)
 		*m->m_ext.ext_cnt);
 }
 
+static __inline int
+m_gettype(int size)
+{
+	int type;
+
+	switch (size) {
+	case MCLBYTES:
+		type = EXT_CLUSTER;
+		break;
+#if MJUMPAGESIZE != MCLBYTES
+	case MJUMPAGESIZE:
+		type = EXT_JUMBOP;
+		break;
+#endif
+	case MJUM9BYTES:
+		type = EXT_JUMBO9;
+		break;
+	default:
+		panic("%s: invalid cluster size %d", __func__, size);
+	}
+
+	return (type);
+}
+
+/*
+ * XXX: m_cljset() is a dangerous API.  One must attach only a new,
+ * unreferenced cluster to an mbuf(9).  It is not possible to assert
+ * that, so care can be taken only by users of the API.
+ */
+static __inline void
+m_cljset(struct mbuf *m, void *cl, int type)
+{
+	int size;
+
+	switch (type) {
+	case EXT_CLUSTER:
+		size = MCLBYTES;
+		break;
+#if MJUMPAGESIZE != MCLBYTES
+	case EXT_JUMBOP:
+		size = MJUMPAGESIZE;
+		break;
+#endif
+	case EXT_JUMBO9:
+		size = MJUM9BYTES;
+		break;
+	default:
+		panic("%s: unknown cluster type %d", __func__, type);
+		break;
+	}
+
+	m->m_data = m->m_ext.ext_buf = cl;
+	m->m_ext.ext_size = size;
+	m->m_ext.ext_type = type;
+	m->m_ext.ext_flags = EXT_FLAG_EMBREF;
+	m->m_ext.ext_count = 1;
+	m->m_flags |= M_EXT;
+}
+
 /* mbufq */
 
 struct mbufq {

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

@@ -24,7 +24,9 @@
 #define M_TRYWAIT	M_WAITOK
 #define M_WAIT		M_WAITOK
 
+/* mbuf types describing the content of the mbuf (including external storage). */
 #define MT_DATA		1
+#define	MT_NOINIT	255	/* not a type, a flag to allocate a non-initialized mbuf */
 
 /*
  * mbuf flags of global significance and layer crossing.
@@ -273,6 +275,9 @@ struct mbuf {
 #define m_pktdat	M_dat.MH.MH_dat.MH_databuf
 #define m_dat		M_dat.M_databuf
 
+int				m_init(struct mbuf *m, int how, short type, int flags);
+int				m_pkthdr_init(struct mbuf *m, int how);
+
 void			m_catpkt(struct mbuf *m, struct mbuf *n);
 void			m_adj(struct mbuf*, int);
 int				m_append(struct mbuf*, int, c_caddr_t);

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

@@ -8,6 +8,7 @@
 
 
 #include <sys/haiku-module.h>
+#include <kernel/int.h>
 
 #include <sys/queue.h>
 #include <sys/_mutex.h>
@@ -23,16 +24,19 @@
 
 #define mtx_assert(mtx, what)
 
-#define MTX_DEF				0x0000
-#define MTX_RECURSE			0x0004
-#define MTX_QUIET			0x40000
-#define MTX_DUPOK			0x400000
+#define	MTX_DEF			0x00000000
+#define MTX_SPIN		0x00000001
+#define MTX_RECURSE		0x00000004
+#define MTX_QUIET		0x00040000
+#define MTX_DUPOK		0x00400000
 
 
 #define MTX_NETWORK_LOCK	"network driver"
 
-#define NET_LOCK_GIANT()
-#define NET_UNLOCK_GIANT()
+
+/* on FreeBSD these are different functions */
+#define	mtx_lock_spin(x) 	mtx_lock(x)
+#define	mtx_unlock_spin(x)	mtx_unlock(x)
 
 
 extern struct mtx Giant;
@@ -49,8 +53,13 @@ mtx_lock(struct mtx* mutex)
 	if (mutex->type == MTX_DEF) {
 		mutex_lock(&mutex->u.mutex.lock);
 		mutex->u.mutex.owner = find_thread(NULL);
-	} else if (mutex->type == MTX_RECURSE)
+	} else if (mutex->type == MTX_RECURSE) {
 		recursive_lock_lock(&mutex->u.recursive);
+	} else if (mutex->type == MTX_SPIN) {
+		cpu_status status = disable_interrupts();
+		acquire_spinlock(&mutex->u.spinlock.lock);
+		mutex->u.spinlock.state = status;
+	}
 }
 
 
@@ -66,6 +75,8 @@ mtx_trylock(struct mtx* mutex)
 		if (recursive_lock_trylock(&mutex->u.recursive) != B_OK)
 			return 0;
 		return 1;
+	} else if (mutex->type == MTX_SPIN) {
+		return 0;
 	}
 	return 0;
 }
@@ -77,8 +88,13 @@ mtx_unlock(struct mtx* mutex)
 	if (mutex->type == MTX_DEF) {
 		mutex->u.mutex.owner = -1;
 		mutex_unlock(&mutex->u.mutex.lock);
-	} else if (mutex->type == MTX_RECURSE)
+	} else if (mutex->type == MTX_RECURSE) {
 		recursive_lock_unlock(&mutex->u.recursive);
+	} else if (mutex->type == MTX_SPIN) {
+		cpu_status status = mutex->u.spinlock.state;
+		release_spinlock(&mutex->u.spinlock.lock);
+		restore_interrupts(status);
+	}
 }
 
 

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

@@ -17,7 +17,7 @@
 
 
 /* The version this compatibility layer is based on */
-#define __FreeBSD_version 1101000
+#define __FreeBSD_version 1200000
 
 #define MAXBSIZE	0x10000
 
@@ -61,6 +61,16 @@
 #error Need definition of ALIGNED_POINTER for this arch!
 #endif
 
+/* defined in arch_cpu.h which we can't include here as it's C++ */
+#if defined(__x86_64__) || defined(__i386__)
+#define CACHE_LINE_SIZE 64
+#else
+#error Need definition of CACHE_LINE_SIZE for this arch!
+#endif
+
+/* defined in platform_kernel_args.h as SMP_MAX_CPUS */
+#define MAXCPU 		64 /* SMP_MAX_CPUS */
+
 /* Macros for counting and rounding. */
 #ifndef howmany
 #define	howmany(x, y)	(((x)+((y)-1))/(y))

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

@@ -1,12 +1,19 @@
 /*
- * Copyright 2009 Haiku Inc. All rights reserved.
+ * Copyright 2009-2018, Haiku Inc. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _FBSD_COMPAT_SYS_PRIORITY_H_
 #define _FBSD_COMPAT_SYS_PRIORITY_H_
 
+#include <OS.h>
+
+
+#define PI_NET			(B_REAL_TIME_DISPLAY_PRIORITY - 9)
+#define	PI_SOFT			(B_REAL_TIME_DISPLAY_PRIORITY - 1)
 
 #define PRI_MIN_KERN	(64)
 #define PZERO			(PRI_MIN_KERN + 20)
+#define	PWAIT			(PRI_MIN_KERN + 28)
+
 
 #endif /* _FBSD_COMPAT_SYS_PRIORITY_H_ */

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

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2018, Haiku Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Augustin Cavalier <waddlesplash>
+ */
+#ifndef _FBSD_COMPAT_SYS_SX_H_
+#define _FBSD_COMPAT_SYS_SX_H_
+
+
+#include <lock.h>
+
+
+struct sx {
+	rw_lock l;
+};
+
+#define sx_init(lock, name)		rw_lock_init(&(lock)->l, name)
+#define sx_xlock(lock)			rw_lock_write_lock(&(lock)->l)
+#define sx_xunlock(lock)		rw_lock_write_unlock(&(lock)->l)
+#define sx_destroy(lock)		rw_lock_destroy(&(lock)->l)
+
+#define sx_assert(sx, what)
+
+
+#endif /* _FBSD_COMPAT_SYS_SX_H_ */

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

@@ -56,7 +56,10 @@ int printf(const char *format, ...) __printflike(1, 2);
 			snooze(n);	\
 	} while (0)
 
+#define	cold 0
+
 void wakeup(void *);
+void wakeup_one(void *);
 
 #ifndef CTASSERT	/* Allow lint to override */
 #define	CTASSERT(x)	_Static_assert(x, "compile-time assertion failed")
@@ -96,6 +99,8 @@ int _pause(const char *, int);
 #define pause(waitMessage, timeout) _pause((waitMessage), (timeout))
 #define tsleep(channel, priority, waitMessage, timeout) \
 	msleep((channel), NULL, (priority), (waitMessage), (timeout))
+#define msleep_spin(chan, mtx, wmesg, timo) \
+	msleep(chan, mtx, PZERO, wmesg, timo)
 #define mtx_sleep msleep
 
 void critical_enter(void);

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2007 Haiku Inc. All rights reserved.
+ * Copyright 2007-2018, Haiku, Inc. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _FBSD_COMPAT_SYS_TASKQUEUE_H_
@@ -11,9 +11,6 @@
 #include <sys/callout.h>
 
 
-#define PI_NET	(B_REAL_TIME_DISPLAY_PRIORITY - 1)
-
-
 struct timeout_task {
 	struct taskqueue *q;
 	struct task t;
@@ -21,6 +18,7 @@ struct timeout_task {
 	int    f;
 };
 
+#define	TASKQUEUE_NAMELEN		64
 
 typedef void (*taskqueue_enqueue_fn)(void *context);
 

src/libs/compat/freebsd_network/mbuf.c

@@ -42,24 +42,26 @@ m_to_oc_flags(int how)
 }
 
 
-static int
-construct_mbuf(struct mbuf *memoryBuffer, short type, int flags)
+int
+m_init(struct mbuf *m, int how, short type, int flags)
 {
-	memoryBuffer->m_next = NULL;
-	memoryBuffer->m_nextpkt = NULL;
-	memoryBuffer->m_len = 0;
-	memoryBuffer->m_flags = flags;
-	memoryBuffer->m_type = type;
-
-	if (flags & M_PKTHDR) {
-		memoryBuffer->m_data = memoryBuffer->m_pktdat;
-		memset(&memoryBuffer->m_pkthdr, 0, sizeof(memoryBuffer->m_pkthdr));
-		SLIST_INIT(&memoryBuffer->m_pkthdr.tags);
-	} else {
-		memoryBuffer->m_data = memoryBuffer->m_dat;
-	}
+	int error;
 
+	if (type == MT_NOINIT)
 		return 0;
+
+	m->m_next = NULL;
+	m->m_nextpkt = NULL;
+	m->m_data = m->m_dat;
+	m->m_len = 0;
+	m->m_flags = flags;
+	m->m_type = type;
+	if (flags & M_PKTHDR)
+		error = m_pkthdr_init(m, how);
+	else
+		error = 0;
+
+	return (error);
 }
 
 
@@ -107,7 +109,8 @@ construct_ext_mbuf(struct mbuf *memoryBuffer, int how)
 static int
 construct_pkt_mbuf(int how, struct mbuf *memoryBuffer, short type, int flags)
 {
-	construct_mbuf(memoryBuffer, type, flags);
+	if (m_init(memoryBuffer, how, type, flags) < 0)
+		return -1;
 	if (construct_ext_mbuf(memoryBuffer, how) < 0)
 		return -1;
 	memoryBuffer->m_ext.ext_type = EXT_CLUSTER;
@@ -140,7 +143,7 @@ _m_get(int how, short type, int flags)
 	if (memoryBuffer == NULL)
 		return NULL;
 
-	construct_mbuf(memoryBuffer, type, flags);
+	m_init(memoryBuffer, how, type, flags);
 
 	return memoryBuffer;
 }
@@ -184,7 +187,10 @@ m_getjcl(int how, short type, int flags, int size)
 		(struct mbuf *)object_cache_alloc(sMBufCache, m_to_oc_flags(how));
 	if (memoryBuffer == NULL)
 		return NULL;
-	construct_mbuf(memoryBuffer, type, flags);
+	if (m_init(memoryBuffer, how, type, flags) < 0) {
+		object_cache_free(sMBufCache, memoryBuffer, 0);
+		return NULL;
+	}
 	if (construct_ext_sized_mbuf(memoryBuffer, how, size) < 0) {
 		object_cache_free(sMBufCache, memoryBuffer, 0);
 		return NULL;

src/libs/compat/freebsd_network/mutex.c

@@ -24,12 +24,15 @@ mtx_init(struct mtx *mutex, const char *name, const char *type,
 	if ((options & MTX_RECURSE) != 0) {
 		recursive_lock_init_etc(&mutex->u.recursive, name,
 			MUTEX_FLAG_CLONE_NAME);
+		mutex->type = MTX_RECURSE;
+	} else if ((options & MTX_SPIN) != 0) {
+		B_INITIALIZE_SPINLOCK(&mutex->u.spinlock.lock);
+		mutex->type = MTX_SPIN;
 	} else {
 		mutex_init_etc(&mutex->u.mutex.lock, name, MUTEX_FLAG_CLONE_NAME);
 		mutex->u.mutex.owner = -1;
+		mutex->type = MTX_DEF;
 	}
-
-	mutex->type = options;
 }
 
 

src/libs/compat/freebsd_network/synch.c

@@ -42,3 +42,10 @@ wakeup(void* identifier)
 {
 	publishedConditionNotifyAll(identifier);
 }
+
+
+void
+wakeup_one(void* identifier)
+{
+	publishedConditionNotifyOne(identifier);
+}

src/libs/compat/freebsd_network/systm.cpp

@@ -1,5 +1,6 @@
 /*
  * Copyright 2012, Jérôme Duval, korli@users.berlios.de.
+ * Copyright 2018, Haiku, Inc.
  * All rights reserved. Distributed under the terms of the MIT License.
  */
 

src/libs/compat/freebsd_network/taskqueue.c

@@ -25,7 +25,7 @@
 #define	DT_DRAIN_IN_PROGRESS	(1 << 1)
 
 struct taskqueue {
-	char tq_name[64];
+	char tq_name[TASKQUEUE_NAMELEN];
 	struct mtx tq_mutex;
 	struct list tq_list;
 	taskqueue_enqueue_fn tq_enqueue;