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#ifndef _NET_INET_IPX_H_

#define _NET_INET_IPX_H_

/*

 *      The following information is in its entirety obtained from:

 *

 *      Novell 'IPX Router Specification' Version 1.10

 *              Part No. 107-000029-001

 *

 *      Which is available from ftp.novell.com

 */

#include <linux/netdevice.h>

#include <net/datalink.h>

#include <linux/ipx.h>

#include <linux/list.h>

struct ipx_address {

        __be32  net;

        __u8    node[IPX_NODE_LEN];

        __be16  sock;

};

#define ipx_broadcast_node      "\377\377\377\377\377\377"

#define ipx_this_node           "\0\0\0\0\0\0"

#define IPX_MAX_PPROP_HOPS 8

struct ipxhdr {

        __be16                  ipx_checksum __attribute__ ((packed));

#define IPX_NO_CHECKSUM __constant_htons(0xFFFF)

        __be16                  ipx_pktsize __attribute__ ((packed));

        __u8                    ipx_tctrl;

        __u8                    ipx_type;

#define IPX_TYPE_UNKNOWN        0x00

#define IPX_TYPE_RIP            0x01    /* may also be 0 */

#define IPX_TYPE_SAP            0x04    /* may also be 0 */

#define IPX_TYPE_SPX            0x05    /* SPX protocol */

#define IPX_TYPE_NCP            0x11    /* $lots for docs on this (SPIT) */

#define IPX_TYPE_PPROP          0x14    /* complicated flood fill brdcast */

        struct ipx_address      ipx_dest __attribute__ ((packed));

        struct ipx_address      ipx_source __attribute__ ((packed));

};

static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb)

{

        return (struct ipxhdr *)skb_transport_header(skb);

}

struct ipx_interface {

        /* IPX address */

        __be32                  if_netnum;

        unsigned char           if_node[IPX_NODE_LEN];

        atomic_t                refcnt;

        /* physical device info */

        struct net_device       *if_dev;

        struct datalink_proto   *if_dlink;

        __be16                  if_dlink_type;

        /* socket support */

        unsigned short          if_sknum;

        struct hlist_head       if_sklist;

        spinlock_t              if_sklist_lock;

        /* administrative overhead */

        int                     if_ipx_offset;

        unsigned char           if_internal;

        unsigned char           if_primary;

        struct list_head        node; /* node in ipx_interfaces list */

};

struct ipx_route {

        __be32                  ir_net;

        struct ipx_interface    *ir_intrfc;

        unsigned char           ir_routed;

        unsigned char           ir_router_node[IPX_NODE_LEN];

        struct list_head        node; /* node in ipx_routes list */

        atomic_t                refcnt;

};

#ifdef __KERNEL__

struct ipx_cb {

        u8      ipx_tctrl;

        __be32  ipx_dest_net;

        __be32  ipx_source_net;

        struct {

                __be32 netnum;

                int index;

        } last_hop;

};

#include <net/sock.h>

struct ipx_sock {

        /* struct sock has to be the first member of ipx_sock */

        struct sock             sk;

        struct ipx_address      dest_addr;

        struct ipx_interface    *intrfc;

        __be16                  port;

#ifdef CONFIG_IPX_INTERN

        unsigned char           node[IPX_NODE_LEN];

#endif

        unsigned short          type;

        /*

         * To handle special ncp connection-handling sockets for mars_nwe,

         * the connection number must be stored in the socket.

         */

        unsigned short          ipx_ncp_conn;

};

static inline struct ipx_sock *ipx_sk(struct sock *sk)

{

        return (struct ipx_sock *)sk;

}

#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0]))

#endif

#define IPX_MIN_EPHEMERAL_SOCKET        0x4000

#define IPX_MAX_EPHEMERAL_SOCKET        0x7fff

extern struct list_head ipx_routes;

extern rwlock_t ipx_routes_lock;

extern struct list_head ipx_interfaces;

extern struct ipx_interface *ipx_interfaces_head(void);

extern spinlock_t ipx_interfaces_lock;

extern struct ipx_interface *ipx_primary_net;

extern int ipx_proc_init(void);

extern void ipx_proc_exit(void);

extern const char *ipx_frame_name(__be16);

extern const char *ipx_device_name(struct ipx_interface *intrfc);

static __inline__ void ipxitf_hold(struct ipx_interface *intrfc)

{

        atomic_inc(&intrfc->refcnt);

}

extern void ipxitf_down(struct ipx_interface *intrfc);

static __inline__ void ipxitf_put(struct ipx_interface *intrfc)

{

        if (atomic_dec_and_test(&intrfc->refcnt))

                ipxitf_down(intrfc);

}

static __inline__ void ipxrtr_hold(struct ipx_route *rt)

{

                atomic_inc(&rt->refcnt);

}

static __inline__ void ipxrtr_put(struct ipx_route *rt)

{

                if (atomic_dec_and_test(&rt->refcnt))

                                        kfree(rt);

}

#endif /* _NET_INET_IPX_H_ */