Viewing file:  atalk.h (4.13 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/*
* AppleTalk networking structures
*
* The following are directly referenced from the University Of Michigan
* netatalk for compatibility reasons.
*/
#ifndef __LINUX_ATALK_H__
#define __LINUX_ATALK_H__
#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 at_addr
{
__u16 s_net;
__u8 s_node;
};
struct sockaddr_at
{
sa_family_t sat_family;
__u8 sat_port;
struct at_addr sat_addr;
char sat_zero[ 8 ];
};
struct netrange
{
__u8 nr_phase;
__u16 nr_firstnet;
__u16 nr_lastnet;
};
struct atalk_route
{
struct net_device *dev;
struct at_addr target;
struct at_addr gateway;
int flags;
struct atalk_route *next;
};
struct atalk_iface
{
struct net_device *dev;
struct at_addr address; /* Our address */
int status; /* What are we doing? */
#define ATIF_PROBE 1 /* Probing for an address */
#define ATIF_PROBE_FAIL 2 /* Probe collided */
struct netrange nets; /* Associated direct netrange */
struct atalk_iface *next;
};
struct atalk_sock
{
unsigned short dest_net;
unsigned short src_net;
unsigned char dest_node;
unsigned char src_node;
unsigned char dest_port;
unsigned char src_port;
};
#ifdef __KERNEL__
#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 */
};
/*
* 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));
};
#define AARP_EXPIRY_TIME (5*60*HZ) /* Not specified - how long till we drop a resolved entry */
#define AARP_HASH_SIZE 16 /* Size of hash table */
#define AARP_TICK_TIME (HZ/5) /* Fast retransmission timer when resolving */
#define AARP_RETRANSMIT_LIMIT 10 /* Send 10 requests then give up (2 seconds) */
#define AARP_RESOLVE_TIME (10*HZ) /* Some value bigger than total retransmit time + a bit for last reply to appear and to stop continual requests */
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 at_addr *atalk_find_dev_addr(struct net_device *dev);
extern struct net_device *atrtr_get_dev(struct at_addr *sa);
extern int aarp_send_ddp(struct net_device *dev,struct sk_buff *skb, struct at_addr *sa, void *hwaddr);
extern void aarp_send_probe(struct net_device *dev, struct at_addr *addr);
extern void aarp_device_down(struct net_device *dev);
#ifdef MODULE
extern void aarp_cleanup_module(void);
#endif /* MODULE */
#endif /* __KERNEL__ */
#endif /* __LINUX_ATALK_H__ */
|