net-tun: Add type safety to tun_xdp_to_ptr() and tun_ptr_to_xdp()

}

EXPORT_SYMBOL(tun_is_xdp_frame);

void *tun_xdp_to_ptr(void *ptr)

void *tun_xdp_to_ptr(struct xdp_frame *xdp)

{

	return (void *)((unsigned long)ptr | TUN_XDP_FLAG);

	return (void *)((unsigned long)xdp | TUN_XDP_FLAG);

}

EXPORT_SYMBOL(tun_xdp_to_ptr);

void *tun_ptr_to_xdp(void *ptr)

struct xdp_frame *tun_ptr_to_xdp(void *ptr)

{

	return (void *)((unsigned long)ptr & ~TUN_XDP_FLAG);

}

struct socket *tun_get_socket(struct file *);

struct ptr_ring *tun_get_tx_ring(struct file *file);

bool tun_is_xdp_frame(void *ptr);

void *tun_xdp_to_ptr(void *ptr);

void *tun_ptr_to_xdp(void *ptr);

void *tun_xdp_to_ptr(struct xdp_frame *xdp);

struct xdp_frame *tun_ptr_to_xdp(void *ptr);

void tun_ptr_free(void *ptr);

#else

#include <linux/err.h>

{

	return false;

}

static inline void *tun_xdp_to_ptr(void *ptr)

static inline void *tun_xdp_to_ptr(struct xdp_frame *xdp)

{

	return NULL;

}

static inline void *tun_ptr_to_xdp(void *ptr)

static inline struct xdp_frame *tun_ptr_to_xdp(void *ptr)

{

	return NULL;

}