[net-next-2.6.git] / include / net / ipx.h

#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>
#include <linux/slab.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 __packed;
#define IPX_NO_CHECKSUM	cpu_to_be16(0xFFFF)
	__be16			ipx_pktsize __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 __packed;
	struct ipx_address	ipx_source __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_ */
Commit	Line	Data
1da177e4 LT	1	#ifndef _NET_INET_IPX_H_
	2	#define _NET_INET_IPX_H_
	3	/*
	4	* The following information is in its entirety obtained from:
	5	*
	6	* Novell 'IPX Router Specification' Version 1.10
	7	* Part No. 107-000029-001
	8	*
	9	* Which is available from ftp.novell.com
	10	*/
	11
	12	#include <linux/netdevice.h>
	13	#include <net/datalink.h>
	14	#include <linux/ipx.h>
	15	#include <linux/list.h>
5a0e3ad6	16	#include <linux/slab.h>
1da177e4 LT	17
1da177e4 LT	18	struct ipx_address {
4833ed09	19	__be32 net;
1da177e4	20	__u8 node[IPX_NODE_LEN];
4833ed09	21	__be16 sock;
1da177e4 LT	22	};
	23
	24	#define ipx_broadcast_node "\377\377\377\377\377\377"
	25	#define ipx_this_node "\0\0\0\0\0\0"
	26
	27	#define IPX_MAX_PPROP_HOPS 8
	28
	29	struct ipxhdr {
bc10502d	30	__be16 ipx_checksum __packed;
f3a7c66b	31	#define IPX_NO_CHECKSUM cpu_to_be16(0xFFFF)
bc10502d	32	__be16 ipx_pktsize __packed;
1da177e4 LT	33	__u8 ipx_tctrl;
	34	__u8 ipx_type;
	35	#define IPX_TYPE_UNKNOWN 0x00
	36	#define IPX_TYPE_RIP 0x01 /* may also be 0 */
	37	#define IPX_TYPE_SAP 0x04 /* may also be 0 */
	38	#define IPX_TYPE_SPX 0x05 /* SPX protocol */
	39	#define IPX_TYPE_NCP 0x11 /* $lots for docs on this (SPIT) */
	40	#define IPX_TYPE_PPROP 0x14 /* complicated flood fill brdcast */
bc10502d ED	41	struct ipx_address ipx_dest __packed;
bc10502d ED	42	struct ipx_address ipx_source __packed;
1da177e4 LT	43	};
	44
	45	static __inline__ struct ipxhdr ipx_hdr(struct sk_buff skb)
	46	{
9c70220b	47	return (struct ipxhdr *)skb_transport_header(skb);
1da177e4 LT	48	}
	49
	50	struct ipx_interface {
	51	/* IPX address */
4833ed09	52	__be32 if_netnum;
1da177e4 LT	53	unsigned char if_node[IPX_NODE_LEN];
	54	atomic_t refcnt;
	55
	56	/* physical device info */
	57	struct net_device *if_dev;
	58	struct datalink_proto *if_dlink;
4833ed09	59	__be16 if_dlink_type;
1da177e4 LT	60
	61	/* socket support */
	62	unsigned short if_sknum;
	63	struct hlist_head if_sklist;
	64	spinlock_t if_sklist_lock;
	65
	66	/* administrative overhead */
	67	int if_ipx_offset;
	68	unsigned char if_internal;
	69	unsigned char if_primary;
	70
	71	struct list_head node; /* node in ipx_interfaces list */
	72	};
	73
	74	struct ipx_route {
4833ed09	75	__be32 ir_net;
1da177e4 LT	76	struct ipx_interface *ir_intrfc;
	77	unsigned char ir_routed;
	78	unsigned char ir_router_node[IPX_NODE_LEN];
	79	struct list_head node; /* node in ipx_routes list */
	80	atomic_t refcnt;
	81	};
	82
	83	#ifdef __KERNEL__
	84	struct ipx_cb {
	85	u8 ipx_tctrl;
4833ed09 AV	86	__be32 ipx_dest_net;
4833ed09 AV	87	__be32 ipx_source_net;
1da177e4	88	struct {
4833ed09	89	__be32 netnum;
1da177e4 LT	90	int index;
	91	} last_hop;
	92	};
	93
	94	#include <net/sock.h>
	95
	96	struct ipx_sock {
	97	/* struct sock has to be the first member of ipx_sock */
	98	struct sock sk;
	99	struct ipx_address dest_addr;
	100	struct ipx_interface *intrfc;
4833ed09	101	__be16 port;
1da177e4 LT	102	#ifdef CONFIG_IPX_INTERN
	103	unsigned char node[IPX_NODE_LEN];
	104	#endif
	105	unsigned short type;
	106	/*
	107	* To handle special ncp connection-handling sockets for mars_nwe,
	108	* the connection number must be stored in the socket.
	109	*/
	110	unsigned short ipx_ncp_conn;
	111	};
	112
	113	static inline struct ipx_sock ipx_sk(struct sock sk)
	114	{
	115	return (struct ipx_sock *)sk;
	116	}
	117
	118	#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0]))
	119	#endif
	120
	121	#define IPX_MIN_EPHEMERAL_SOCKET 0x4000
	122	#define IPX_MAX_EPHEMERAL_SOCKET 0x7fff
	123
	124	extern struct list_head ipx_routes;
	125	extern rwlock_t ipx_routes_lock;
	126
	127	extern struct list_head ipx_interfaces;
	128	extern struct ipx_interface *ipx_interfaces_head(void);
	129	extern spinlock_t ipx_interfaces_lock;
	130
	131	extern struct ipx_interface *ipx_primary_net;
	132
	133	extern int ipx_proc_init(void);
	134	extern void ipx_proc_exit(void);
	135
4833ed09	136	extern const char *ipx_frame_name(__be16);
1da177e4 LT	137	extern const char ipx_device_name(struct ipx_interface intrfc);
	138
	139	static __inline__ void ipxitf_hold(struct ipx_interface *intrfc)
	140	{
	141	atomic_inc(&intrfc->refcnt);
	142	}
	143
	144	extern void ipxitf_down(struct ipx_interface *intrfc);
	145
	146	static __inline__ void ipxitf_put(struct ipx_interface *intrfc)
	147	{
	148	if (atomic_dec_and_test(&intrfc->refcnt))
	149	ipxitf_down(intrfc);
	150	}
	151
	152	static __inline__ void ipxrtr_hold(struct ipx_route *rt)
	153	{
	154	atomic_inc(&rt->refcnt);
	155	}
	156
	157	static __inline__ void ipxrtr_put(struct ipx_route *rt)
	158	{
	159	if (atomic_dec_and_test(&rt->refcnt))
	160	kfree(rt);
	161	}
	162	#endif /* _NET_INET_IPX_H_ */