181 lines
4.1 KiB
C
Executable File
181 lines
4.1 KiB
C
Executable File
/*
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* AppleTalk networking structures
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*
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* The following are directly referenced from the University Of Michigan
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* netatalk for compatibility reasons.
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*/
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#ifndef __LINUX_ATALK_H__
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#define __LINUX_ATALK_H__
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#define ATPORT_FIRST 1
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#define ATPORT_RESERVED 128
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#define ATPORT_LAST 254 /* 254 is only legal on localtalk */
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#define ATADDR_ANYNET (__u16)0
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#define ATADDR_ANYNODE (__u8)0
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#define ATADDR_ANYPORT (__u8)0
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#define ATADDR_BCAST (__u8)255
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#define DDP_MAXSZ 587
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#define DDP_MAXHOPS 15 /* 4 bits of hop counter */
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#define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0)
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struct at_addr
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{
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__u16 s_net;
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__u8 s_node;
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};
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struct sockaddr_at
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{
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sa_family_t sat_family;
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__u8 sat_port;
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struct at_addr sat_addr;
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char sat_zero[ 8 ];
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};
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struct netrange
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{
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__u8 nr_phase;
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__u16 nr_firstnet;
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__u16 nr_lastnet;
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};
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struct atalk_route
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{
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struct net_device *dev;
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struct at_addr target;
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struct at_addr gateway;
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int flags;
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struct atalk_route *next;
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};
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struct atalk_iface
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{
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struct net_device *dev;
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struct at_addr address; /* Our address */
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int status; /* What are we doing? */
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#define ATIF_PROBE 1 /* Probing for an address */
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#define ATIF_PROBE_FAIL 2 /* Probe collided */
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struct netrange nets; /* Associated direct netrange */
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struct atalk_iface *next;
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};
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struct atalk_sock
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{
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unsigned short dest_net;
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unsigned short src_net;
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unsigned char dest_node;
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unsigned char src_node;
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unsigned char dest_port;
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unsigned char src_port;
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};
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#ifdef __KERNEL__
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#include <asm/byteorder.h>
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struct ddpehdr
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{
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#ifdef __LITTLE_ENDIAN_BITFIELD
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__u16 deh_len:10, deh_hops:4, deh_pad:2;
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#else
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__u16 deh_pad:2, deh_hops:4, deh_len:10;
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#endif
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__u16 deh_sum;
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__u16 deh_dnet;
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__u16 deh_snet;
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__u8 deh_dnode;
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__u8 deh_snode;
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__u8 deh_dport;
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__u8 deh_sport;
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/* And netatalk apps expect to stick the type in themselves */
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};
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/*
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* Don't drop the struct into the struct above. You'll get some
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* surprise padding.
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*/
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struct ddpebits
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{
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#ifdef __LITTLE_ENDIAN_BITFIELD
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__u16 deh_len:10, deh_hops:4, deh_pad:2;
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#else
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__u16 deh_pad:2, deh_hops:4, deh_len:10;
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#endif
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};
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/*
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* Short form header
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*/
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struct ddpshdr
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{
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#ifdef __LITTLE_ENDIAN_BITFIELD
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__u16 dsh_len:10, dsh_pad:6;
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#else
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__u16 dsh_pad:6, dsh_len:10;
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#endif
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__u8 dsh_dport;
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__u8 dsh_sport;
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/* And netatalk apps expect to stick the type in themselves */
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};
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/* AppleTalk AARP headers */
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struct elapaarp
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{
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__u16 hw_type;
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#define AARP_HW_TYPE_ETHERNET 1
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#define AARP_HW_TYPE_TOKENRING 2
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__u16 pa_type;
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__u8 hw_len;
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__u8 pa_len;
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#define AARP_PA_ALEN 4
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__u16 function;
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#define AARP_REQUEST 1
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#define AARP_REPLY 2
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#define AARP_PROBE 3
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__u8 hw_src[ETH_ALEN] __attribute__ ((packed));
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__u8 pa_src_zero __attribute__ ((packed));
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__u16 pa_src_net __attribute__ ((packed));
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__u8 pa_src_node __attribute__ ((packed));
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__u8 hw_dst[ETH_ALEN] __attribute__ ((packed));
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__u8 pa_dst_zero __attribute__ ((packed));
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__u16 pa_dst_net __attribute__ ((packed));
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__u8 pa_dst_node __attribute__ ((packed));
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};
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#define AARP_EXPIRY_TIME (5*60*HZ) /* Not specified - how long till we drop a resolved entry */
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#define AARP_HASH_SIZE 16 /* Size of hash table */
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#define AARP_TICK_TIME (HZ/5) /* Fast retransmission timer when resolving */
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#define AARP_RETRANSMIT_LIMIT 10 /* Send 10 requests then give up (2 seconds) */
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#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 */
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extern struct datalink_proto *ddp_dl, *aarp_dl;
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extern void aarp_proto_init(void);
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/* Inter module exports */
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/*
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* Give a device find its atif control structure
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*/
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static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
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{
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return dev->atalk_ptr;
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}
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extern struct at_addr *atalk_find_dev_addr(struct net_device *dev);
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extern struct net_device *atrtr_get_dev(struct at_addr *sa);
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extern int aarp_send_ddp(struct net_device *dev,struct sk_buff *skb, struct at_addr *sa, void *hwaddr);
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extern void aarp_send_probe(struct net_device *dev, struct at_addr *addr);
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extern void aarp_device_down(struct net_device *dev);
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#ifdef MODULE
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extern void aarp_cleanup_module(void);
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#endif /* MODULE */
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#endif /* __KERNEL__ */
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#endif /* __LINUX_ATALK_H__ */
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