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;
88 #include <asm/byteorder.h>
91 #ifdef __LITTLE_ENDIAN_BITFIELD
107 /* And netatalk apps expect to stick the type in themselves */
110 static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb)
112 return (struct ddpehdr *)skb->h.raw;
116 * Don't drop the struct into the struct above. You'll get some
120 #ifdef __LITTLE_ENDIAN_BITFIELD
131 /* Short form header */
133 #ifdef __LITTLE_ENDIAN_BITFIELD
142 /* And netatalk apps expect to stick the type in themselves */
145 /* AppleTalk AARP headers */
148 #define AARP_HW_TYPE_ETHERNET 1
149 #define AARP_HW_TYPE_TOKENRING 2
153 #define AARP_PA_ALEN 4
155 #define AARP_REQUEST 1
158 __u8 hw_src[ETH_ALEN] __attribute__ ((packed));
159 __u8 pa_src_zero __attribute__ ((packed));
160 __be16 pa_src_net __attribute__ ((packed));
161 __u8 pa_src_node __attribute__ ((packed));
162 __u8 hw_dst[ETH_ALEN] __attribute__ ((packed));
163 __u8 pa_dst_zero __attribute__ ((packed));
164 __be16 pa_dst_net __attribute__ ((packed));
165 __u8 pa_dst_node __attribute__ ((packed));
168 static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb)
170 return (struct elapaarp *)skb->h.raw;
173 /* Not specified - how long till we drop a resolved entry */
174 #define AARP_EXPIRY_TIME (5 * 60 * HZ)
175 /* Size of hash table */
176 #define AARP_HASH_SIZE 16
177 /* Fast retransmission timer when resolving */
178 #define AARP_TICK_TIME (HZ / 5)
179 /* Send 10 requests then give up (2 seconds) */
180 #define AARP_RETRANSMIT_LIMIT 10
182 * Some value bigger than total retransmit time + a bit for last reply to
183 * appear and to stop continual requests
185 #define AARP_RESOLVE_TIME (10 * HZ)
187 extern struct datalink_proto *ddp_dl, *aarp_dl;
188 extern void aarp_proto_init(void);
190 /* Inter module exports */
192 /* Give a device find its atif control structure */
193 static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
195 return dev->atalk_ptr;
198 extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev);
199 extern struct net_device *atrtr_get_dev(struct atalk_addr *sa);
200 extern int aarp_send_ddp(struct net_device *dev,
202 struct atalk_addr *sa, void *hwaddr);
203 extern void aarp_device_down(struct net_device *dev);
204 extern void aarp_probe_network(struct atalk_iface *atif);
205 extern int aarp_proxy_probe_network(struct atalk_iface *atif,
206 struct atalk_addr *sa);
207 extern void aarp_proxy_remove(struct net_device *dev,
208 struct atalk_addr *sa);
210 extern void aarp_cleanup_module(void);
212 extern struct hlist_head atalk_sockets;
213 extern rwlock_t atalk_sockets_lock;
215 extern struct atalk_route *atalk_routes;
216 extern rwlock_t atalk_routes_lock;
218 extern struct atalk_iface *atalk_interfaces;
219 extern rwlock_t atalk_interfaces_lock;
221 extern struct atalk_route atrtr_default;
223 extern struct file_operations atalk_seq_arp_fops;
225 extern int sysctl_aarp_expiry_time;
226 extern int sysctl_aarp_tick_time;
227 extern int sysctl_aarp_retransmit_limit;
228 extern int sysctl_aarp_resolve_time;
231 extern void atalk_register_sysctl(void);
232 extern void atalk_unregister_sysctl(void);
234 #define atalk_register_sysctl() do { } while(0)
235 #define atalk_unregister_sysctl() do { } while(0)
238 #ifdef CONFIG_PROC_FS
239 extern int atalk_proc_init(void);
240 extern void atalk_proc_exit(void);
242 #define atalk_proc_init() ({ 0; })
243 #define atalk_proc_exit() do { } while(0)
244 #endif /* CONFIG_PROC_FS */
246 #endif /* __KERNEL__ */
247 #endif /* __LINUX_ATALK_H__ */