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

#ifndef __LINUX_ATALK_H__
#define __LINUX_ATALK_H__

#include <asm/byteorder.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 {
	__be16	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;
	__be16	nr_firstnet;
	__be16	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;
	__be16		dest_net;
	__be16		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;
}

struct ddpehdr {
	__be16	deh_len_hops;	/* lower 10 bits are length, next 4 - hops */
	__be16	deh_sum;
	__be16	deh_dnet;
	__be16	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_transport_header(skb);
}

/* AppleTalk AARP headers */
struct elapaarp {
	__be16	hw_type;
#define AARP_HW_TYPE_ETHERNET		1
#define AARP_HW_TYPE_TOKENRING		2
	__be16	pa_type;
	__u8	hw_len;
	__u8	pa_len;
#define AARP_PA_ALEN			4
	__be16	function;
#define AARP_REQUEST			1
#define AARP_REPLY			2
#define AARP_PROBE			3
	__u8	hw_src[ETH_ALEN];
	__u8	pa_src_zero;
	__be16	pa_src_net;
	__u8	pa_src_node;
	__u8	hw_dst[ETH_ALEN];
	__u8	pa_dst_zero;
	__be16	pa_dst_net;
	__u8	pa_dst_node;
} __attribute__ ((packed));

static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb)
{
	return (struct elapaarp *)skb_transport_header(skb);
}

/* 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 const 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
32e9e25e DM	4	#include <asm/byteorder.h>
32e9e25e DM	5
1da177e4 LT	6	/*
	7	* AppleTalk networking structures
	8	*
	9	* The following are directly referenced from the University Of Michigan
	10	* netatalk for compatibility reasons.
	11	*/
	12	#define ATPORT_FIRST 1
	13	#define ATPORT_RESERVED 128
	14	#define ATPORT_LAST 254 /* 254 is only legal on localtalk */
	15	#define ATADDR_ANYNET (__u16)0
	16	#define ATADDR_ANYNODE (__u8)0
	17	#define ATADDR_ANYPORT (__u8)0
	18	#define ATADDR_BCAST (__u8)255
	19	#define DDP_MAXSZ 587
	20	#define DDP_MAXHOPS 15 /* 4 bits of hop counter */
	21
	22	#define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0)
	23
	24	struct atalk_addr {
f6e276ee	25	__be16 s_net;
1da177e4 LT	26	__u8 s_node;
	27	};
	28
	29	struct sockaddr_at {
	30	sa_family_t sat_family;
	31	__u8 sat_port;
	32	struct atalk_addr sat_addr;
	33	char sat_zero[8];
	34	};
	35
	36	struct atalk_netrange {
	37	__u8 nr_phase;
f6e276ee AD	38	__be16 nr_firstnet;
f6e276ee AD	39	__be16 nr_lastnet;
1da177e4 LT	40	};
1da177e4 LT	41
9f3786dc DM	42	#ifdef __KERNEL__
	43
	44	#include <net/sock.h>
	45
1da177e4 LT	46	struct atalk_route {
	47	struct net_device *dev;
	48	struct atalk_addr target;
	49	struct atalk_addr gateway;
	50	int flags;
	51	struct atalk_route *next;
	52	};
	53
	54	/**
	55	* struct atalk_iface - AppleTalk Interface
	56	* @dev - Network device associated with this interface
	57	* @address - Our address
	58	* @status - What are we doing?
	59	* @nets - Associated direct netrange
	60	* @next - next element in the list of interfaces
	61	*/
	62	struct atalk_iface {
	63	struct net_device *dev;
	64	struct atalk_addr address;
	65	int status;
	66	#define ATIF_PROBE 1 /* Probing for an address */
	67	#define ATIF_PROBE_FAIL 2 /* Probe collided */
	68	struct atalk_netrange nets;
	69	struct atalk_iface *next;
	70	};
	71
	72	struct atalk_sock {
	73	/* struct sock has to be the first member of atalk_sock */
	74	struct sock sk;
f6e276ee AD	75	__be16 dest_net;
f6e276ee AD	76	__be16 src_net;
1da177e4 LT	77	unsigned char dest_node;
	78	unsigned char src_node;
	79	unsigned char dest_port;
	80	unsigned char src_port;
	81	};
	82
	83	static inline struct atalk_sock at_sk(struct sock sk)
	84	{
	85	return (struct atalk_sock *)sk;
	86	}
	87
1da177e4	88	struct ddpehdr {
2a50f28c	89	__be16 deh_len_hops; /* lower 10 bits are length, next 4 - hops */
f6e276ee AD	90	__be16 deh_sum;
	91	__be16 deh_dnet;
	92	__be16 deh_snet;
1da177e4 LT	93	__u8 deh_dnode;
	94	__u8 deh_snode;
	95	__u8 deh_dport;
	96	__u8 deh_sport;
	97	/* And netatalk apps expect to stick the type in themselves */
	98	};
	99
	100	static __inline__ struct ddpehdr ddp_hdr(struct sk_buff skb)
	101	{
9c70220b	102	return (struct ddpehdr *)skb_transport_header(skb);
1da177e4 LT	103	}
1da177e4 LT	104
1da177e4 LT	105	/* AppleTalk AARP headers */
1da177e4 LT	106	struct elapaarp {
f6e276ee	107	__be16 hw_type;
1da177e4 LT	108	#define AARP_HW_TYPE_ETHERNET 1
1da177e4 LT	109	#define AARP_HW_TYPE_TOKENRING 2
f6e276ee	110	__be16 pa_type;
1da177e4 LT	111	__u8 hw_len;
	112	__u8 pa_len;
	113	#define AARP_PA_ALEN 4
f6e276ee	114	__be16 function;
1da177e4 LT	115	#define AARP_REQUEST 1
	116	#define AARP_REPLY 2
	117	#define AARP_PROBE 3
6a878184 JB	118	__u8 hw_src[ETH_ALEN];
	119	__u8 pa_src_zero;
	120	__be16 pa_src_net;
	121	__u8 pa_src_node;
	122	__u8 hw_dst[ETH_ALEN];
	123	__u8 pa_dst_zero;
	124	__be16 pa_dst_net;
	125	__u8 pa_dst_node;
	126	} __attribute__ ((packed));
1da177e4 LT	127
	128	static __inline__ struct elapaarp aarp_hdr(struct sk_buff skb)
	129	{
9c70220b	130	return (struct elapaarp *)skb_transport_header(skb);
1da177e4 LT	131	}
	132
	133	/* Not specified - how long till we drop a resolved entry */
	134	#define AARP_EXPIRY_TIME (5 * 60 * HZ)
	135	/* Size of hash table */
	136	#define AARP_HASH_SIZE 16
	137	/* Fast retransmission timer when resolving */
	138	#define AARP_TICK_TIME (HZ / 5)
	139	/* Send 10 requests then give up (2 seconds) */
	140	#define AARP_RETRANSMIT_LIMIT 10
	141	/*
	142	* Some value bigger than total retransmit time + a bit for last reply to
	143	* appear and to stop continual requests
	144	*/
	145	#define AARP_RESOLVE_TIME (10 * HZ)
	146
	147	extern struct datalink_proto ddp_dl, aarp_dl;
	148	extern void aarp_proto_init(void);
	149
	150	/* Inter module exports */
	151
	152	/* Give a device find its atif control structure */
	153	static inline struct atalk_iface atalk_find_dev(struct net_device dev)
	154	{
	155	return dev->atalk_ptr;
	156	}
	157
	158	extern struct atalk_addr atalk_find_dev_addr(struct net_device dev);
	159	extern struct net_device atrtr_get_dev(struct atalk_addr sa);
	160	extern int aarp_send_ddp(struct net_device *dev,
	161	struct sk_buff *skb,
	162	struct atalk_addr sa, void hwaddr);
	163	extern void aarp_device_down(struct net_device *dev);
	164	extern void aarp_probe_network(struct atalk_iface *atif);
	165	extern int aarp_proxy_probe_network(struct atalk_iface *atif,
	166	struct atalk_addr *sa);
	167	extern void aarp_proxy_remove(struct net_device *dev,
	168	struct atalk_addr *sa);
	169
	170	extern void aarp_cleanup_module(void);
	171
	172	extern struct hlist_head atalk_sockets;
	173	extern rwlock_t atalk_sockets_lock;
	174
	175	extern struct atalk_route *atalk_routes;
	176	extern rwlock_t atalk_routes_lock;
	177
	178	extern struct atalk_iface *atalk_interfaces;
	179	extern rwlock_t atalk_interfaces_lock;
	180
	181	extern struct atalk_route atrtr_default;
	182
54047320	183	extern const struct file_operations atalk_seq_arp_fops;
1da177e4 LT	184
	185	extern int sysctl_aarp_expiry_time;
	186	extern int sysctl_aarp_tick_time;
	187	extern int sysctl_aarp_retransmit_limit;
	188	extern int sysctl_aarp_resolve_time;
	189
	190	#ifdef CONFIG_SYSCTL
	191	extern void atalk_register_sysctl(void);
	192	extern void atalk_unregister_sysctl(void);
	193	#else
	194	#define atalk_register_sysctl() do { } while(0)
	195	#define atalk_unregister_sysctl() do { } while(0)
	196	#endif
	197
	198	#ifdef CONFIG_PROC_FS
	199	extern int atalk_proc_init(void);
	200	extern void atalk_proc_exit(void);
	201	#else
	202	#define atalk_proc_init() ({ 0; })
	203	#define atalk_proc_exit() do { } while(0)
	204	#endif /* CONFIG_PROC_FS */
	205
	206	#endif /* __KERNEL__ */
	207	#endif /* __LINUX_ATALK_H__ */