#ifndef SALLOC_H
#define SALLOC_H

#define SALLOC_DEBUG
#define SALLOC_TIMEOUT (3600*HZ)

#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/malloc.h>
#include <asm/spinlock.h>

typedef struct scope_buf_s {
    struct scope_buf_s *next;
    void *scope;
#ifdef SALLOC_TIMEOUT
    unsigned long timeout;
#endif
    char buf[0];
} scope_buf_t;

typedef struct salloc_s {
    scope_buf_t *buflist;
    int size;
    spinlock_t lock;
#ifdef SALLOC_DEBUG
    int nbufs;
#endif
} salloc_t;

#ifdef SALLOC_DEBUG
#define SALLOC_INIT(size) (salloc_t) { NULL, size, SPIN_LOCK_UNLOCKED, 0 }
#else
#define SALLOC_INIT(size) (salloc_t) { NULL, size, SPIN_LOCK_UNLOCKED }
#endif

extern void *salloc(salloc_t *bufs, void *scope);

extern void sunalloc(salloc_t *bufs);

/* These routines use salloc() and can be seen as a prototype. */

extern char *__kinet_ntoa(__u32 a, void *s);
#define kinet_ntoa(a) __kinet_ntoa((a), __builtin_return_address(0))

extern char *__kinet6_ntoa(const struct in6_addr *a, void *s);
#define kinet6_ntoa(a) __kinet6_ntoa((a), __builtin_return_address(0))

extern void ntoa_unalloc(void);

#endif