1 #ifndef __LINUX_ATALK_H__
2 #define __LINUX_ATALK_H__
4 * AppleTalk networking structures
6 * The following are directly referenced from the University Of Michigan
7 * netatalk for compatibility reasons.
10 #define ATPORT_RESERVED 128
11 #define ATPORT_LAST 254 /* 254 is only legal on localtalk */
12 #define ATADDR_ANYNET (__u16)0
13 #define ATADDR_ANYNODE (__u8)0
14 #define ATADDR_ANYPORT (__u8)0
15 #define ATADDR_BCAST (__u8)255
17 #define DDP_MAXHOPS 15 /* 4 bits of hop counter */
19 #define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0)
27 sa_family_t sat_family;
29 struct atalk_addr sat_addr;
33 struct atalk_netrange {
40 struct net_device *dev;
41 struct atalk_addr target;
42 struct atalk_addr gateway;
44 struct atalk_route *next;
48 * struct atalk_iface - AppleTalk Interface
49 * @dev - Network device associated with this interface
50 * @address - Our address
51 * @status - What are we doing?
52 * @nets - Associated direct netrange
53 * @next - next element in the list of interfaces
56 struct net_device *dev;
57 struct atalk_addr address;
59 #define ATIF_PROBE 1 /* Probing for an address */
60 #define ATIF_PROBE_FAIL 2 /* Probe collided */
61 struct atalk_netrange nets;
62 struct atalk_iface *next;
66 unsigned short dest_net;
67 unsigned short src_net;
68 unsigned char dest_node;
69 unsigned char src_node;
70 unsigned char dest_port;
71 unsigned char src_port;
76 #include <asm/byteorder.h>
79 #ifdef __LITTLE_ENDIAN_BITFIELD
95 /* And netatalk apps expect to stick the type in themselves */
98 static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb)
100 return (struct ddpehdr *)skb->h.raw;
104 * Don't drop the struct into the struct above. You'll get some
108 #ifdef __LITTLE_ENDIAN_BITFIELD
119 /* Short form header */
121 #ifdef __LITTLE_ENDIAN_BITFIELD
130 /* And netatalk apps expect to stick the type in themselves */
133 /* AppleTalk AARP headers */
136 #define AARP_HW_TYPE_ETHERNET 1
137 #define AARP_HW_TYPE_TOKENRING 2
141 #define AARP_PA_ALEN 4
143 #define AARP_REQUEST 1
146 __u8 hw_src[ETH_ALEN] __attribute__ ((packed));
147 __u8 pa_src_zero __attribute__ ((packed));
148 __u16 pa_src_net __attribute__ ((packed));
149 __u8 pa_src_node __attribute__ ((packed));
150 __u8 hw_dst[ETH_ALEN] __attribute__ ((packed));
151 __u8 pa_dst_zero __attribute__ ((packed));
152 __u16 pa_dst_net __attribute__ ((packed));
153 __u8 pa_dst_node __attribute__ ((packed));
156 static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb)
158 return (struct elapaarp *)skb->h.raw;
161 /* Not specified - how long till we drop a resolved entry */
162 #define AARP_EXPIRY_TIME (5 * 60 * HZ)
163 /* Size of hash table */
164 #define AARP_HASH_SIZE 16
165 /* Fast retransmission timer when resolving */
166 #define AARP_TICK_TIME (HZ / 5)
167 /* Send 10 requests then give up (2 seconds) */
168 #define AARP_RETRANSMIT_LIMIT 10
170 * Some value bigger than total retransmit time + a bit for last reply to
171 * appear and to stop continual requests
173 #define AARP_RESOLVE_TIME (10 * HZ)
175 extern struct datalink_proto *ddp_dl, *aarp_dl;
176 extern void aarp_proto_init(void);
178 /* Inter module exports */
180 /* Give a device find its atif control structure */
181 static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
183 return dev->atalk_ptr;
186 extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev);
187 extern struct net_device *atrtr_get_dev(struct atalk_addr *sa);
188 extern int aarp_send_ddp(struct net_device *dev,
190 struct atalk_addr *sa, void *hwaddr);
191 extern void aarp_device_down(struct net_device *dev);
192 extern void aarp_probe_network(struct atalk_iface *atif);
193 extern int aarp_proxy_probe_network(struct atalk_iface *atif,
194 struct atalk_addr *sa);
195 extern void aarp_proxy_remove(struct net_device *dev,
196 struct atalk_addr *sa);
198 extern void aarp_cleanup_module(void);
200 #define at_sk(__sk) ((struct atalk_sock *)(__sk)->sk_protinfo)
202 extern struct hlist_head atalk_sockets;
203 extern rwlock_t atalk_sockets_lock;
205 extern struct atalk_route *atalk_routes;
206 extern rwlock_t atalk_routes_lock;
208 extern struct atalk_iface *atalk_interfaces;
209 extern rwlock_t atalk_interfaces_lock;
211 extern struct atalk_route atrtr_default;
213 extern struct file_operations atalk_seq_arp_fops;
215 extern int sysctl_aarp_expiry_time;
216 extern int sysctl_aarp_tick_time;
217 extern int sysctl_aarp_retransmit_limit;
218 extern int sysctl_aarp_resolve_time;
221 extern void atalk_register_sysctl(void);
222 extern void atalk_unregister_sysctl(void);
224 #define atalk_register_sysctl() do { } while(0)
225 #define atalk_unregister_sysctl() do { } while(0)
228 #ifdef CONFIG_PROC_FS
229 extern int atalk_proc_init(void);
230 extern void atalk_proc_exit(void);
232 #define atalk_proc_init() ({ 0; })
233 #define atalk_proc_exit() do { } while(0)
234 #endif /* CONFIG_PROC_FS */
236 #endif /* __KERNEL__ */
237 #endif /* __LINUX_ATALK_H__ */