1 #ifndef __LINUX_ATALK_H__
2 #define __LINUX_ATALK_H__
4 #include <asm/byteorder.h>
7 * AppleTalk networking structures
9 * The following are directly referenced from the University Of Michigan
10 * netatalk for compatibility reasons.
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
20 #define DDP_MAXHOPS 15 /* 4 bits of hop counter */
22 #define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0)
30 sa_family_t sat_family;
32 struct atalk_addr sat_addr;
36 struct atalk_netrange {
47 struct net_device *dev;
48 struct atalk_addr target;
49 struct atalk_addr gateway;
51 struct atalk_route *next;
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
63 struct net_device *dev;
64 struct atalk_addr address;
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;
73 /* struct sock has to be the first member of atalk_sock */
77 unsigned char dest_node;
78 unsigned char src_node;
79 unsigned char dest_port;
80 unsigned char src_port;
83 static inline struct atalk_sock *at_sk(struct sock *sk)
85 return (struct atalk_sock *)sk;
89 __be16 deh_len_hops; /* lower 10 bits are length, next 4 - hops */
97 /* And netatalk apps expect to stick the type in themselves */
100 static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb)
102 return (struct ddpehdr *)skb_transport_header(skb);
105 /* AppleTalk AARP headers */
108 #define AARP_HW_TYPE_ETHERNET 1
109 #define AARP_HW_TYPE_TOKENRING 2
113 #define AARP_PA_ALEN 4
115 #define AARP_REQUEST 1
118 __u8 hw_src[ETH_ALEN];
122 __u8 hw_dst[ETH_ALEN];
126 } __attribute__ ((packed));
128 static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb)
130 return (struct elapaarp *)skb_transport_header(skb);
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
142 * Some value bigger than total retransmit time + a bit for last reply to
143 * appear and to stop continual requests
145 #define AARP_RESOLVE_TIME (10 * HZ)
147 extern struct datalink_proto *ddp_dl, *aarp_dl;
148 extern void aarp_proto_init(void);
150 /* Inter module exports */
152 /* Give a device find its atif control structure */
153 static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
155 return dev->atalk_ptr;
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,
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);
170 extern void aarp_cleanup_module(void);
172 extern struct hlist_head atalk_sockets;
173 extern rwlock_t atalk_sockets_lock;
175 extern struct atalk_route *atalk_routes;
176 extern rwlock_t atalk_routes_lock;
178 extern struct atalk_iface *atalk_interfaces;
179 extern rwlock_t atalk_interfaces_lock;
181 extern struct atalk_route atrtr_default;
183 extern const struct file_operations atalk_seq_arp_fops;
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;
191 extern void atalk_register_sysctl(void);
192 extern void atalk_unregister_sysctl(void);
194 #define atalk_register_sysctl() do { } while(0)
195 #define atalk_unregister_sysctl() do { } while(0)
198 #ifdef CONFIG_PROC_FS
199 extern int atalk_proc_init(void);
200 extern void atalk_proc_exit(void);
202 #define atalk_proc_init() ({ 0; })
203 #define atalk_proc_exit() do { } while(0)
204 #endif /* CONFIG_PROC_FS */
206 #endif /* __KERNEL__ */
207 #endif /* __LINUX_ATALK_H__ */