1 #ifndef __LINUX_ATALK_H__
2 #define __LINUX_ATALK_H__
4 #include <linux/types.h>
5 #include <asm/byteorder.h>
6 #include <linux/socket.h>
9 * AppleTalk networking structures
11 * The following are directly referenced from the University Of Michigan
12 * netatalk for compatibility reasons.
14 #define ATPORT_FIRST 1
15 #define ATPORT_RESERVED 128
16 #define ATPORT_LAST 254 /* 254 is only legal on localtalk */
17 #define ATADDR_ANYNET (__u16)0
18 #define ATADDR_ANYNODE (__u8)0
19 #define ATADDR_ANYPORT (__u8)0
20 #define ATADDR_BCAST (__u8)255
22 #define DDP_MAXHOPS 15 /* 4 bits of hop counter */
24 #define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0)
32 __kernel_sa_family_t sat_family;
34 struct atalk_addr sat_addr;
38 struct atalk_netrange {
49 struct net_device *dev;
50 struct atalk_addr target;
51 struct atalk_addr gateway;
53 struct atalk_route *next;
57 * struct atalk_iface - AppleTalk Interface
58 * @dev - Network device associated with this interface
59 * @address - Our address
60 * @status - What are we doing?
61 * @nets - Associated direct netrange
62 * @next - next element in the list of interfaces
65 struct net_device *dev;
66 struct atalk_addr address;
68 #define ATIF_PROBE 1 /* Probing for an address */
69 #define ATIF_PROBE_FAIL 2 /* Probe collided */
70 struct atalk_netrange nets;
71 struct atalk_iface *next;
75 /* struct sock has to be the first member of atalk_sock */
79 unsigned char dest_node;
80 unsigned char src_node;
81 unsigned char dest_port;
82 unsigned char src_port;
85 static inline struct atalk_sock *at_sk(struct sock *sk)
87 return (struct atalk_sock *)sk;
91 __be16 deh_len_hops; /* lower 10 bits are length, next 4 - hops */
99 /* And netatalk apps expect to stick the type in themselves */
102 static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb)
104 return (struct ddpehdr *)skb_transport_header(skb);
107 /* AppleTalk AARP headers */
110 #define AARP_HW_TYPE_ETHERNET 1
111 #define AARP_HW_TYPE_TOKENRING 2
115 #define AARP_PA_ALEN 4
117 #define AARP_REQUEST 1
120 __u8 hw_src[ETH_ALEN];
124 __u8 hw_dst[ETH_ALEN];
128 } __attribute__ ((packed));
130 static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb)
132 return (struct elapaarp *)skb_transport_header(skb);
135 /* Not specified - how long till we drop a resolved entry */
136 #define AARP_EXPIRY_TIME (5 * 60 * HZ)
137 /* Size of hash table */
138 #define AARP_HASH_SIZE 16
139 /* Fast retransmission timer when resolving */
140 #define AARP_TICK_TIME (HZ / 5)
141 /* Send 10 requests then give up (2 seconds) */
142 #define AARP_RETRANSMIT_LIMIT 10
144 * Some value bigger than total retransmit time + a bit for last reply to
145 * appear and to stop continual requests
147 #define AARP_RESOLVE_TIME (10 * HZ)
149 extern struct datalink_proto *ddp_dl, *aarp_dl;
150 extern void aarp_proto_init(void);
152 /* Inter module exports */
154 /* Give a device find its atif control structure */
155 static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
157 return dev->atalk_ptr;
160 extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev);
161 extern struct net_device *atrtr_get_dev(struct atalk_addr *sa);
162 extern int aarp_send_ddp(struct net_device *dev,
164 struct atalk_addr *sa, void *hwaddr);
165 extern void aarp_device_down(struct net_device *dev);
166 extern void aarp_probe_network(struct atalk_iface *atif);
167 extern int aarp_proxy_probe_network(struct atalk_iface *atif,
168 struct atalk_addr *sa);
169 extern void aarp_proxy_remove(struct net_device *dev,
170 struct atalk_addr *sa);
172 extern void aarp_cleanup_module(void);
174 extern struct hlist_head atalk_sockets;
175 extern rwlock_t atalk_sockets_lock;
177 extern struct atalk_route *atalk_routes;
178 extern rwlock_t atalk_routes_lock;
180 extern struct atalk_iface *atalk_interfaces;
181 extern rwlock_t atalk_interfaces_lock;
183 extern struct atalk_route atrtr_default;
185 extern const struct file_operations atalk_seq_arp_fops;
187 extern int sysctl_aarp_expiry_time;
188 extern int sysctl_aarp_tick_time;
189 extern int sysctl_aarp_retransmit_limit;
190 extern int sysctl_aarp_resolve_time;
193 extern void atalk_register_sysctl(void);
194 extern void atalk_unregister_sysctl(void);
196 #define atalk_register_sysctl() do { } while(0)
197 #define atalk_unregister_sysctl() do { } while(0)
200 #ifdef CONFIG_PROC_FS
201 extern int atalk_proc_init(void);
202 extern void atalk_proc_exit(void);
204 #define atalk_proc_init() ({ 0; })
205 #define atalk_proc_exit() do { } while(0)
206 #endif /* CONFIG_PROC_FS */
208 #endif /* __KERNEL__ */
209 #endif /* __LINUX_ATALK_H__ */