1 #ifndef __LINUX_ATALK_H__
2 #define __LINUX_ATALK_H__
5 * AppleTalk networking structures
7 * The following are directly referenced from the University Of Michigan
8 * netatalk for compatibility reasons.
10 #define ATPORT_FIRST 1
11 #define ATPORT_RESERVED 128
12 #define ATPORT_LAST 254 /* 254 is only legal on localtalk */
13 #define ATADDR_ANYNET (__u16)0
14 #define ATADDR_ANYNODE (__u8)0
15 #define ATADDR_ANYPORT (__u8)0
16 #define ATADDR_BCAST (__u8)255
18 #define DDP_MAXHOPS 15 /* 4 bits of hop counter */
20 #define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0)
28 sa_family_t sat_family;
30 struct atalk_addr sat_addr;
34 struct atalk_netrange {
45 struct net_device *dev;
46 struct atalk_addr target;
47 struct atalk_addr gateway;
49 struct atalk_route *next;
53 * struct atalk_iface - AppleTalk Interface
54 * @dev - Network device associated with this interface
55 * @address - Our address
56 * @status - What are we doing?
57 * @nets - Associated direct netrange
58 * @next - next element in the list of interfaces
61 struct net_device *dev;
62 struct atalk_addr address;
64 #define ATIF_PROBE 1 /* Probing for an address */
65 #define ATIF_PROBE_FAIL 2 /* Probe collided */
66 struct atalk_netrange nets;
67 struct atalk_iface *next;
71 /* struct sock has to be the first member of atalk_sock */
73 unsigned short dest_net;
74 unsigned short src_net;
75 unsigned char dest_node;
76 unsigned char src_node;
77 unsigned char dest_port;
78 unsigned char src_port;
81 static inline struct atalk_sock *at_sk(struct sock *sk)
83 return (struct atalk_sock *)sk;
86 #include <asm/byteorder.h>
89 #ifdef __LITTLE_ENDIAN_BITFIELD
105 /* And netatalk apps expect to stick the type in themselves */
108 static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb)
110 return (struct ddpehdr *)skb->h.raw;
114 * Don't drop the struct into the struct above. You'll get some
118 #ifdef __LITTLE_ENDIAN_BITFIELD
129 /* Short form header */
131 #ifdef __LITTLE_ENDIAN_BITFIELD
140 /* And netatalk apps expect to stick the type in themselves */
143 /* AppleTalk AARP headers */
146 #define AARP_HW_TYPE_ETHERNET 1
147 #define AARP_HW_TYPE_TOKENRING 2
151 #define AARP_PA_ALEN 4
153 #define AARP_REQUEST 1
156 __u8 hw_src[ETH_ALEN] __attribute__ ((packed));
157 __u8 pa_src_zero __attribute__ ((packed));
158 __u16 pa_src_net __attribute__ ((packed));
159 __u8 pa_src_node __attribute__ ((packed));
160 __u8 hw_dst[ETH_ALEN] __attribute__ ((packed));
161 __u8 pa_dst_zero __attribute__ ((packed));
162 __u16 pa_dst_net __attribute__ ((packed));
163 __u8 pa_dst_node __attribute__ ((packed));
166 static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb)
168 return (struct elapaarp *)skb->h.raw;
171 /* Not specified - how long till we drop a resolved entry */
172 #define AARP_EXPIRY_TIME (5 * 60 * HZ)
173 /* Size of hash table */
174 #define AARP_HASH_SIZE 16
175 /* Fast retransmission timer when resolving */
176 #define AARP_TICK_TIME (HZ / 5)
177 /* Send 10 requests then give up (2 seconds) */
178 #define AARP_RETRANSMIT_LIMIT 10
180 * Some value bigger than total retransmit time + a bit for last reply to
181 * appear and to stop continual requests
183 #define AARP_RESOLVE_TIME (10 * HZ)
185 extern struct datalink_proto *ddp_dl, *aarp_dl;
186 extern void aarp_proto_init(void);
188 /* Inter module exports */
190 /* Give a device find its atif control structure */
191 static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
193 return dev->atalk_ptr;
196 extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev);
197 extern struct net_device *atrtr_get_dev(struct atalk_addr *sa);
198 extern int aarp_send_ddp(struct net_device *dev,
200 struct atalk_addr *sa, void *hwaddr);
201 extern void aarp_device_down(struct net_device *dev);
202 extern void aarp_probe_network(struct atalk_iface *atif);
203 extern int aarp_proxy_probe_network(struct atalk_iface *atif,
204 struct atalk_addr *sa);
205 extern void aarp_proxy_remove(struct net_device *dev,
206 struct atalk_addr *sa);
208 extern void aarp_cleanup_module(void);
210 extern struct hlist_head atalk_sockets;
211 extern rwlock_t atalk_sockets_lock;
213 extern struct atalk_route *atalk_routes;
214 extern rwlock_t atalk_routes_lock;
216 extern struct atalk_iface *atalk_interfaces;
217 extern rwlock_t atalk_interfaces_lock;
219 extern struct atalk_route atrtr_default;
221 extern struct file_operations atalk_seq_arp_fops;
223 extern int sysctl_aarp_expiry_time;
224 extern int sysctl_aarp_tick_time;
225 extern int sysctl_aarp_retransmit_limit;
226 extern int sysctl_aarp_resolve_time;
229 extern void atalk_register_sysctl(void);
230 extern void atalk_unregister_sysctl(void);
232 #define atalk_register_sysctl() do { } while(0)
233 #define atalk_unregister_sysctl() do { } while(0)
236 #ifdef CONFIG_PROC_FS
237 extern int atalk_proc_init(void);
238 extern void atalk_proc_exit(void);
240 #define atalk_proc_init() ({ 0; })
241 #define atalk_proc_exit() do { } while(0)
242 #endif /* CONFIG_PROC_FS */
244 #endif /* __KERNEL__ */
245 #endif /* __LINUX_ATALK_H__ */