[mirror_ubuntu-artful-kernel.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>
#include <linux/refcount.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;
};

/* From af_ipx.c */
extern int sysctl_ipx_pprop_broadcasting;

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];
	refcount_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 */
	refcount_t		refcnt;
};

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]))

#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;
struct ipx_interface *ipx_interfaces_head(void);
extern spinlock_t ipx_interfaces_lock;

extern struct ipx_interface *ipx_primary_net;

int ipx_proc_init(void);
void ipx_proc_exit(void);

const char *ipx_frame_name(__be16);
const char *ipx_device_name(struct ipx_interface *intrfc);

static __inline__ void ipxitf_hold(struct ipx_interface *intrfc)
{
	refcount_inc(&intrfc->refcnt);
}

void ipxitf_down(struct ipx_interface *intrfc);
struct ipx_interface *ipxitf_find_using_net(__be32 net);
int ipxitf_send(struct ipx_interface *intrfc, struct sk_buff *skb, char *node);
__be16 ipx_cksum(struct ipxhdr *packet, int length);
int ipxrtr_add_route(__be32 network, struct ipx_interface *intrfc,
		     unsigned char *node);
void ipxrtr_del_routes(struct ipx_interface *intrfc);
int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
			struct msghdr *msg, size_t len, int noblock);
int ipxrtr_route_skb(struct sk_buff *skb);
struct ipx_route *ipxrtr_lookup(__be32 net);
int ipxrtr_ioctl(unsigned int cmd, void __user *arg);

static __inline__ void ipxitf_put(struct ipx_interface *intrfc)
{
	if (refcount_dec_and_test(&intrfc->refcnt))
		ipxitf_down(intrfc);
}

static __inline__ void ipxrtr_hold(struct ipx_route *rt)
{
	        refcount_inc(&rt->refcnt);
}

static __inline__ void ipxrtr_put(struct ipx_route *rt)
{
	        if (refcount_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>
d25189ca	17	#include <linux/refcount.h>
1da177e4 LT	18
1da177e4 LT	19	struct ipx_address {
4833ed09	20	__be32 net;
1da177e4	21	__u8 node[IPX_NODE_LEN];
4833ed09	22	__be16 sock;
1da177e4 LT	23	};
	24
	25	#define ipx_broadcast_node "\377\377\377\377\377\377"
	26	#define ipx_this_node "\0\0\0\0\0\0"
	27
	28	#define IPX_MAX_PPROP_HOPS 8
	29
	30	struct ipxhdr {
bc10502d	31	__be16 ipx_checksum __packed;
f3a7c66b	32	#define IPX_NO_CHECKSUM cpu_to_be16(0xFFFF)
bc10502d	33	__be16 ipx_pktsize __packed;
1da177e4 LT	34	__u8 ipx_tctrl;
	35	__u8 ipx_type;
	36	#define IPX_TYPE_UNKNOWN 0x00
	37	#define IPX_TYPE_RIP 0x01 /* may also be 0 */
	38	#define IPX_TYPE_SAP 0x04 /* may also be 0 */
	39	#define IPX_TYPE_SPX 0x05 /* SPX protocol */
	40	#define IPX_TYPE_NCP 0x11 /* $lots for docs on this (SPIT) */
	41	#define IPX_TYPE_PPROP 0x14 /* complicated flood fill brdcast */
bc10502d ED	42	struct ipx_address ipx_dest __packed;
bc10502d ED	43	struct ipx_address ipx_source __packed;
1da177e4 LT	44	};
1da177e4 LT	45
5e96d788 FF	46	/* From af_ipx.c */
	47	extern int sysctl_ipx_pprop_broadcasting;
	48
1da177e4 LT	49	static __inline__ struct ipxhdr ipx_hdr(struct sk_buff skb)
1da177e4 LT	50	{
9c70220b	51	return (struct ipxhdr *)skb_transport_header(skb);
1da177e4 LT	52	}
	53
	54	struct ipx_interface {
	55	/* IPX address */
4833ed09	56	__be32 if_netnum;
1da177e4	57	unsigned char if_node[IPX_NODE_LEN];
d25189ca	58	refcount_t refcnt;
1da177e4 LT	59
	60	/* physical device info */
	61	struct net_device *if_dev;
	62	struct datalink_proto *if_dlink;
4833ed09	63	__be16 if_dlink_type;
1da177e4 LT	64
	65	/* socket support */
	66	unsigned short if_sknum;
	67	struct hlist_head if_sklist;
	68	spinlock_t if_sklist_lock;
	69
	70	/* administrative overhead */
	71	int if_ipx_offset;
	72	unsigned char if_internal;
	73	unsigned char if_primary;
	74
	75	struct list_head node; /* node in ipx_interfaces list */
	76	};
	77
	78	struct ipx_route {
4833ed09	79	__be32 ir_net;
1da177e4 LT	80	struct ipx_interface *ir_intrfc;
	81	unsigned char ir_routed;
	82	unsigned char ir_router_node[IPX_NODE_LEN];
	83	struct list_head node; /* node in ipx_routes list */
16f73c96	84	refcount_t refcnt;
1da177e4 LT	85	};
1da177e4 LT	86
1da177e4 LT	87	struct ipx_cb {
1da177e4 LT	88	u8 ipx_tctrl;
4833ed09 AV	89	__be32 ipx_dest_net;
4833ed09 AV	90	__be32 ipx_source_net;
1da177e4	91	struct {
4833ed09	92	__be32 netnum;
1da177e4 LT	93	int index;
	94	} last_hop;
	95	};
	96
	97	#include <net/sock.h>
	98
	99	struct ipx_sock {
	100	/* struct sock has to be the first member of ipx_sock */
	101	struct sock sk;
	102	struct ipx_address dest_addr;
	103	struct ipx_interface *intrfc;
4833ed09	104	__be16 port;
1da177e4 LT	105	#ifdef CONFIG_IPX_INTERN
	106	unsigned char node[IPX_NODE_LEN];
	107	#endif
	108	unsigned short type;
	109	/*
	110	* To handle special ncp connection-handling sockets for mars_nwe,
	111	* the connection number must be stored in the socket.
	112	*/
	113	unsigned short ipx_ncp_conn;
	114	};
	115
	116	static inline struct ipx_sock ipx_sk(struct sock sk)
	117	{
	118	return (struct ipx_sock *)sk;
	119	}
	120
	121	#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0]))
1da177e4 LT	122
	123	#define IPX_MIN_EPHEMERAL_SOCKET 0x4000
	124	#define IPX_MAX_EPHEMERAL_SOCKET 0x7fff
	125
	126	extern struct list_head ipx_routes;
	127	extern rwlock_t ipx_routes_lock;
	128
	129	extern struct list_head ipx_interfaces;
9d03626a	130	struct ipx_interface *ipx_interfaces_head(void);
1da177e4 LT	131	extern spinlock_t ipx_interfaces_lock;
	132
	133	extern struct ipx_interface *ipx_primary_net;
	134
9d03626a JP	135	int ipx_proc_init(void);
9d03626a JP	136	void ipx_proc_exit(void);
1da177e4	137
9d03626a JP	138	const char *ipx_frame_name(__be16);
9d03626a JP	139	const char ipx_device_name(struct ipx_interface intrfc);
1da177e4 LT	140
	141	static __inline__ void ipxitf_hold(struct ipx_interface *intrfc)
	142	{
d25189ca	143	refcount_inc(&intrfc->refcnt);
1da177e4 LT	144	}
1da177e4 LT	145
9d03626a	146	void ipxitf_down(struct ipx_interface *intrfc);
493cc5e5 RK	147	struct ipx_interface *ipxitf_find_using_net(__be32 net);
	148	int ipxitf_send(struct ipx_interface intrfc, struct sk_buff skb, char *node);
	149	__be16 ipx_cksum(struct ipxhdr *packet, int length);
578efbc1 RK	150	int ipxrtr_add_route(__be32 network, struct ipx_interface *intrfc,
	151	unsigned char *node);
	152	void ipxrtr_del_routes(struct ipx_interface *intrfc);
	153	int ipxrtr_route_packet(struct sock sk, struct sockaddr_ipx usipx,
e1693718	154	struct msghdr *msg, size_t len, int noblock);
578efbc1 RK	155	int ipxrtr_route_skb(struct sk_buff *skb);
	156	struct ipx_route *ipxrtr_lookup(__be32 net);
	157	int ipxrtr_ioctl(unsigned int cmd, void __user *arg);
1da177e4 LT	158
	159	static __inline__ void ipxitf_put(struct ipx_interface *intrfc)
	160	{
d25189ca	161	if (refcount_dec_and_test(&intrfc->refcnt))
1da177e4 LT	162	ipxitf_down(intrfc);
	163	}
	164
	165	static __inline__ void ipxrtr_hold(struct ipx_route *rt)
	166	{
16f73c96	167	refcount_inc(&rt->refcnt);
1da177e4 LT	168	}
	169
	170	static __inline__ void ipxrtr_put(struct ipx_route *rt)
	171	{
16f73c96	172	if (refcount_dec_and_test(&rt->refcnt))
1da177e4 LT	173	kfree(rt);
	174	}
	175	#endif /* _NET_INET_IPX_H_ */