atalk.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:4k
- /*
- * 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__ */