[deliverable/linux.git] / include / linux / atalk.h

#ifndef __LINUX_ATALK_H__
#define __LINUX_ATALK_H__

/*
 * AppleTalk networking structures
 *
 * The following are directly referenced from the University Of Michigan
 * netatalk for compatibility reasons.
 */
#define ATPORT_FIRST	1
#define ATPORT_RESERVED	128
#define ATPORT_LAST	254		/* 254 is only legal on localtalk */ 
#define ATADDR_ANYNET	(__u16)0
#define ATADDR_ANYNODE	(__u8)0
#define ATADDR_ANYPORT  (__u8)0
#define ATADDR_BCAST	(__u8)255
#define DDP_MAXSZ	587
#define DDP_MAXHOPS     15		/* 4 bits of hop counter */

#define SIOCATALKDIFADDR       (SIOCPROTOPRIVATE + 0)

struct atalk_addr {
	__u16	s_net;
	__u8	s_node;
};

struct sockaddr_at {
	sa_family_t	  sat_family;
	__u8		  sat_port;
	struct atalk_addr sat_addr;
	char		  sat_zero[8];
};

struct atalk_netrange {
	__u8	nr_phase;
	__u16	nr_firstnet;
	__u16	nr_lastnet;
};

#ifdef __KERNEL__

#include <net/sock.h>

struct atalk_route {
	struct net_device  *dev;
	struct atalk_addr  target;
	struct atalk_addr  gateway;
	int		   flags;
	struct atalk_route *next;
};

/**
 *	struct atalk_iface - AppleTalk Interface
 *	@dev - Network device associated with this interface
 *	@address - Our address
 *	@status - What are we doing?
 *	@nets - Associated direct netrange
 *	@next - next element in the list of interfaces
 */
struct atalk_iface {
	struct net_device	*dev;
	struct atalk_addr	address;
	int			status;
#define ATIF_PROBE	1		/* Probing for an address */
#define ATIF_PROBE_FAIL	2		/* Probe collided */
	struct atalk_netrange	nets;
	struct atalk_iface	*next;
};
	
struct atalk_sock {
	/* struct sock has to be the first member of atalk_sock */
	struct sock	sk;
	unsigned short	dest_net;
	unsigned short	src_net;
	unsigned char	dest_node;
	unsigned char	src_node;
	unsigned char	dest_port;
	unsigned char	src_port;
};

static inline struct atalk_sock *at_sk(struct sock *sk)
{
	return (struct atalk_sock *)sk;
}

#include <asm/byteorder.h>

struct ddpehdr {
#ifdef __LITTLE_ENDIAN_BITFIELD
	__u16	deh_len:10,
		deh_hops:4,
		deh_pad:2;
#else
	__u16	deh_pad:2,
		deh_hops:4,
		deh_len:10;
#endif
	__u16	deh_sum;
	__u16	deh_dnet;
	__u16	deh_snet;
	__u8	deh_dnode;
	__u8	deh_snode;
	__u8	deh_dport;
	__u8	deh_sport;
	/* And netatalk apps expect to stick the type in themselves */
};

static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb)
{
	return (struct ddpehdr *)skb->h.raw;
}

/*
 *	Don't drop the struct into the struct above.  You'll get some
 *	surprise padding.
 */
struct ddpebits {
#ifdef __LITTLE_ENDIAN_BITFIELD
	__u16	deh_len:10,
		deh_hops:4,
		deh_pad:2;
#else
	__u16	deh_pad:2,
		deh_hops:4,
		deh_len:10;
#endif
};

/* Short form header */
struct ddpshdr {
#ifdef __LITTLE_ENDIAN_BITFIELD
	__u16	dsh_len:10,
		dsh_pad:6;
#else
	__u16	dsh_pad:6,
		dsh_len:10;
#endif
	__u8	dsh_dport;
	__u8	dsh_sport;
	/* And netatalk apps expect to stick the type in themselves */
};

/* AppleTalk AARP headers */
struct elapaarp {
	__u16	hw_type;
#define AARP_HW_TYPE_ETHERNET		1
#define AARP_HW_TYPE_TOKENRING		2
	__u16	pa_type;
	__u8	hw_len;
	__u8	pa_len;
#define AARP_PA_ALEN			4
	__u16	function;
#define AARP_REQUEST			1
#define AARP_REPLY			2
#define AARP_PROBE			3
	__u8	hw_src[ETH_ALEN]	__attribute__ ((packed));
	__u8	pa_src_zero		__attribute__ ((packed));
	__u16	pa_src_net		__attribute__ ((packed));
	__u8	pa_src_node		__attribute__ ((packed));
	__u8	hw_dst[ETH_ALEN]	__attribute__ ((packed));
	__u8	pa_dst_zero		__attribute__ ((packed));
	__u16	pa_dst_net		__attribute__ ((packed));
	__u8	pa_dst_node		__attribute__ ((packed));	
};

static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb)
{
	return (struct elapaarp *)skb->h.raw;
}

/* Not specified - how long till we drop a resolved entry */
#define AARP_EXPIRY_TIME	(5 * 60 * HZ)
/* Size of hash table */
#define AARP_HASH_SIZE		16
/* Fast retransmission timer when resolving */
#define AARP_TICK_TIME		(HZ / 5)
/* Send 10 requests then give up (2 seconds) */
#define AARP_RETRANSMIT_LIMIT	10
/*
 * Some value bigger than total retransmit time + a bit for last reply to
 * appear and to stop continual requests
 */
#define AARP_RESOLVE_TIME	(10 * HZ)

extern struct datalink_proto *ddp_dl, *aarp_dl;
extern void aarp_proto_init(void);

/* Inter module exports */

/* Give a device find its atif control structure */
static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
{
	return dev->atalk_ptr;
}

extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev);
extern struct net_device *atrtr_get_dev(struct atalk_addr *sa);
extern int		 aarp_send_ddp(struct net_device *dev,
				       struct sk_buff *skb,
				       struct atalk_addr *sa, void *hwaddr);
extern void		 aarp_device_down(struct net_device *dev);
extern void		 aarp_probe_network(struct atalk_iface *atif);
extern int 		 aarp_proxy_probe_network(struct atalk_iface *atif,
				     struct atalk_addr *sa);
extern void		 aarp_proxy_remove(struct net_device *dev,
					   struct atalk_addr *sa);

extern void		aarp_cleanup_module(void);

extern struct hlist_head atalk_sockets;
extern rwlock_t atalk_sockets_lock;

extern struct atalk_route *atalk_routes;
extern rwlock_t atalk_routes_lock;

extern struct atalk_iface *atalk_interfaces;
extern rwlock_t atalk_interfaces_lock;

extern struct atalk_route atrtr_default;

extern struct file_operations atalk_seq_arp_fops;

extern int sysctl_aarp_expiry_time;
extern int sysctl_aarp_tick_time;
extern int sysctl_aarp_retransmit_limit;
extern int sysctl_aarp_resolve_time;

#ifdef CONFIG_SYSCTL
extern void atalk_register_sysctl(void);
extern void atalk_unregister_sysctl(void);
#else
#define atalk_register_sysctl()		do { } while(0)
#define atalk_unregister_sysctl()	do { } while(0)
#endif

#ifdef CONFIG_PROC_FS
extern int atalk_proc_init(void);
extern void atalk_proc_exit(void);
#else
#define atalk_proc_init()	({ 0; })
#define atalk_proc_exit()	do { } while(0)
#endif /* CONFIG_PROC_FS */

#endif /* __KERNEL__ */
#endif /* __LINUX_ATALK_H__ */
Commit	Line	Data
1da177e4 LT	1	#ifndef __LINUX_ATALK_H__
	2	#define __LINUX_ATALK_H__
	3
1da177e4 LT	4	/*
	5	* AppleTalk networking structures
	6	*
	7	* The following are directly referenced from the University Of Michigan
	8	* netatalk for compatibility reasons.
	9	*/
	10	#define ATPORT_FIRST 1
	11	#define ATPORT_RESERVED 128
	12	#define ATPORT_LAST 254 /* 254 is only legal on localtalk */
	13	#define ATADDR_ANYNET (__u16)0
	14	#define ATADDR_ANYNODE (__u8)0
	15	#define ATADDR_ANYPORT (__u8)0
	16	#define ATADDR_BCAST (__u8)255
	17	#define DDP_MAXSZ 587
	18	#define DDP_MAXHOPS 15 /* 4 bits of hop counter */
	19
	20	#define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0)
	21
	22	struct atalk_addr {
	23	__u16 s_net;
	24	__u8 s_node;
	25	};
	26
	27	struct sockaddr_at {
	28	sa_family_t sat_family;
	29	__u8 sat_port;
	30	struct atalk_addr sat_addr;
	31	char sat_zero[8];
	32	};
	33
	34	struct atalk_netrange {
	35	__u8 nr_phase;
	36	__u16 nr_firstnet;
	37	__u16 nr_lastnet;
	38	};
	39
9f3786dc DM	40	#ifdef __KERNEL__
	41
	42	#include <net/sock.h>
	43
1da177e4 LT	44	struct atalk_route {
	45	struct net_device *dev;
	46	struct atalk_addr target;
	47	struct atalk_addr gateway;
	48	int flags;
	49	struct atalk_route *next;
	50	};
	51
	52	/**
	53	* struct atalk_iface - AppleTalk Interface
	54	* @dev - Network device associated with this interface
	55	* @address - Our address
	56	* @status - What are we doing?
	57	* @nets - Associated direct netrange
	58	* @next - next element in the list of interfaces
	59	*/
	60	struct atalk_iface {
	61	struct net_device *dev;
	62	struct atalk_addr address;
	63	int status;
	64	#define ATIF_PROBE 1 /* Probing for an address */
	65	#define ATIF_PROBE_FAIL 2 /* Probe collided */
	66	struct atalk_netrange nets;
	67	struct atalk_iface *next;
	68	};
	69
	70	struct atalk_sock {
	71	/* struct sock has to be the first member of atalk_sock */
	72	struct sock sk;
	73	unsigned short dest_net;
	74	unsigned short src_net;
	75	unsigned char dest_node;
	76	unsigned char src_node;
	77	unsigned char dest_port;
	78	unsigned char src_port;
	79	};
	80
	81	static inline struct atalk_sock at_sk(struct sock sk)
	82	{
	83	return (struct atalk_sock *)sk;
	84	}
	85
1da177e4 LT	86	#include <asm/byteorder.h>
	87
	88	struct ddpehdr {
	89	#ifdef __LITTLE_ENDIAN_BITFIELD
	90	__u16 deh_len:10,
	91	deh_hops:4,
	92	deh_pad:2;
	93	#else
	94	__u16 deh_pad:2,
	95	deh_hops:4,
	96	deh_len:10;
	97	#endif
	98	__u16 deh_sum;
	99	__u16 deh_dnet;
	100	__u16 deh_snet;
	101	__u8 deh_dnode;
	102	__u8 deh_snode;
	103	__u8 deh_dport;
	104	__u8 deh_sport;
	105	/* And netatalk apps expect to stick the type in themselves */
	106	};
	107
	108	static __inline__ struct ddpehdr ddp_hdr(struct sk_buff skb)
	109	{
	110	return (struct ddpehdr *)skb->h.raw;
	111	}
	112
	113	/*
	114	* Don't drop the struct into the struct above. You'll get some
	115	* surprise padding.
	116	*/
	117	struct ddpebits {
	118	#ifdef __LITTLE_ENDIAN_BITFIELD
	119	__u16 deh_len:10,
	120	deh_hops:4,
	121	deh_pad:2;
	122	#else
	123	__u16 deh_pad:2,
	124	deh_hops:4,
	125	deh_len:10;
	126	#endif
	127	};
	128
	129	/* Short form header */
	130	struct ddpshdr {
	131	#ifdef __LITTLE_ENDIAN_BITFIELD
	132	__u16 dsh_len:10,
	133	dsh_pad:6;
	134	#else
	135	__u16 dsh_pad:6,
	136	dsh_len:10;
	137	#endif
	138	__u8 dsh_dport;
	139	__u8 dsh_sport;
	140	/* And netatalk apps expect to stick the type in themselves */
	141	};
	142
	143	/* AppleTalk AARP headers */
	144	struct elapaarp {
	145	__u16 hw_type;
	146	#define AARP_HW_TYPE_ETHERNET 1
	147	#define AARP_HW_TYPE_TOKENRING 2
	148	__u16 pa_type;
	149	__u8 hw_len;
150	__u8 pa_len;
151	#define AARP_PA_ALEN 4
152	__u16 function;
153	#define AARP_REQUEST 1
154	#define AARP_REPLY 2
155	#define AARP_PROBE 3
156	__u8 hw_src[ETH_ALEN] __attribute__ ((packed));
157	__u8 pa_src_zero __attribute__ ((packed));
158	__u16 pa_src_net __attribute__ ((packed));
159	__u8 pa_src_node __attribute__ ((packed));
160	__u8 hw_dst[ETH_ALEN] __attribute__ ((packed));
161	__u8 pa_dst_zero __attribute__ ((packed));
162	__u16 pa_dst_net __attribute__ ((packed));
163	__u8 pa_dst_node __attribute__ ((packed));
164	};
165
166	static __inline__ struct elapaarp aarp_hdr(struct sk_buff skb)
167	{
168	return (struct elapaarp *)skb->h.raw;
169	}
170
171	/* Not specified - how long till we drop a resolved entry */
172	#define AARP_EXPIRY_TIME (5 * 60 * HZ)
173	/* Size of hash table */
174	#define AARP_HASH_SIZE 16
175	/* Fast retransmission timer when resolving */
176	#define AARP_TICK_TIME (HZ / 5)
177	/* Send 10 requests then give up (2 seconds) */
178	#define AARP_RETRANSMIT_LIMIT 10
179	/*
180	* Some value bigger than total retransmit time + a bit for last reply to
181	* appear and to stop continual requests
182	*/
183	#define AARP_RESOLVE_TIME (10 * HZ)
184
185	extern struct datalink_proto ddp_dl, aarp_dl;
186	extern void aarp_proto_init(void);
187
188	/* Inter module exports */
189
190	/* Give a device find its atif control structure */
191	static inline struct atalk_iface atalk_find_dev(struct net_device dev)
192	{
193	return dev->atalk_ptr;
194	}
195
196	extern struct atalk_addr atalk_find_dev_addr(struct net_device dev);
197	extern struct net_device atrtr_get_dev(struct atalk_addr sa);
198	extern int aarp_send_ddp(struct net_device *dev,
199	struct sk_buff *skb,
200	struct atalk_addr sa, void hwaddr);
201	extern void aarp_device_down(struct net_device *dev);
202	extern void aarp_probe_network(struct atalk_iface *atif);
203	extern int aarp_proxy_probe_network(struct atalk_iface *atif,
204	struct atalk_addr *sa);
205	extern void aarp_proxy_remove(struct net_device *dev,
206	struct atalk_addr *sa);
207
208	extern void aarp_cleanup_module(void);
209
210	extern struct hlist_head atalk_sockets;
211	extern rwlock_t atalk_sockets_lock;
212
213	extern struct atalk_route *atalk_routes;
214	extern rwlock_t atalk_routes_lock;
215
216	extern struct atalk_iface *atalk_interfaces;
217	extern rwlock_t atalk_interfaces_lock;
218
219	extern struct atalk_route atrtr_default;
220
221	extern struct file_operations atalk_seq_arp_fops;
222
223	extern int sysctl_aarp_expiry_time;
224	extern int sysctl_aarp_tick_time;
225	extern int sysctl_aarp_retransmit_limit;
226	extern int sysctl_aarp_resolve_time;
227
228	#ifdef CONFIG_SYSCTL
229	extern void atalk_register_sysctl(void);
230	extern void atalk_unregister_sysctl(void);
231	#else
232	#define atalk_register_sysctl() do { } while(0)
233	#define atalk_unregister_sysctl() do { } while(0)
234	#endif
235
236	#ifdef CONFIG_PROC_FS
237	extern int atalk_proc_init(void);
238	extern void atalk_proc_exit(void);
239	#else
240	#define atalk_proc_init() ({ 0; })
241	#define atalk_proc_exit() do { } while(0)
242	#endif /* CONFIG_PROC_FS */
243
244	#endif /* __KERNEL__ */
245	#endif /* __LINUX_ATALK_H__ */