atalk.h
上传用户:szlgq88
上传日期:2009-04-28
资源大小:48287k
文件大小:6k
- #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;
- }
- #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
- __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->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 {
- __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] __attribute__ ((packed));
- __u8 pa_src_zero __attribute__ ((packed));
- __be16 pa_src_net __attribute__ ((packed));
- __u8 pa_src_node __attribute__ ((packed));
- __u8 hw_dst[ETH_ALEN] __attribute__ ((packed));
- __u8 pa_dst_zero __attribute__ ((packed));
- __be16 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__ */