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1da177e4 LT |
1 | #ifndef __LINUX_ATALK_H__ |
2 | #define __LINUX_ATALK_H__ | |
3 | ||
85c09569 | 4 | #include <linux/types.h> |
32e9e25e | 5 | #include <asm/byteorder.h> |
bcb949b8 | 6 | #include <linux/socket.h> |
32e9e25e | 7 | |
1da177e4 LT |
8 | /* |
9 | * AppleTalk networking structures | |
10 | * | |
11 | * The following are directly referenced from the University Of Michigan | |
12 | * netatalk for compatibility reasons. | |
13 | */ | |
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 | |
21 | #define DDP_MAXSZ 587 | |
22 | #define DDP_MAXHOPS 15 /* 4 bits of hop counter */ | |
23 | ||
24 | #define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0) | |
25 | ||
26 | struct atalk_addr { | |
f6e276ee | 27 | __be16 s_net; |
1da177e4 LT |
28 | __u8 s_node; |
29 | }; | |
30 | ||
31 | struct sockaddr_at { | |
bcb949b8 | 32 | __kernel_sa_family_t sat_family; |
1da177e4 LT |
33 | __u8 sat_port; |
34 | struct atalk_addr sat_addr; | |
35 | char sat_zero[8]; | |
36 | }; | |
37 | ||
38 | struct atalk_netrange { | |
39 | __u8 nr_phase; | |
f6e276ee AD |
40 | __be16 nr_firstnet; |
41 | __be16 nr_lastnet; | |
1da177e4 LT |
42 | }; |
43 | ||
9f3786dc DM |
44 | #ifdef __KERNEL__ |
45 | ||
46 | #include <net/sock.h> | |
47 | ||
1da177e4 LT |
48 | struct atalk_route { |
49 | struct net_device *dev; | |
50 | struct atalk_addr target; | |
51 | struct atalk_addr gateway; | |
52 | int flags; | |
53 | struct atalk_route *next; | |
54 | }; | |
55 | ||
56 | /** | |
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 | |
63 | */ | |
64 | struct atalk_iface { | |
65 | struct net_device *dev; | |
66 | struct atalk_addr address; | |
67 | int status; | |
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; | |
72 | }; | |
73 | ||
74 | struct atalk_sock { | |
75 | /* struct sock has to be the first member of atalk_sock */ | |
76 | struct sock sk; | |
f6e276ee AD |
77 | __be16 dest_net; |
78 | __be16 src_net; | |
1da177e4 LT |
79 | unsigned char dest_node; |
80 | unsigned char src_node; | |
81 | unsigned char dest_port; | |
82 | unsigned char src_port; | |
83 | }; | |
84 | ||
85 | static inline struct atalk_sock *at_sk(struct sock *sk) | |
86 | { | |
87 | return (struct atalk_sock *)sk; | |
88 | } | |
89 | ||
1da177e4 | 90 | struct ddpehdr { |
2a50f28c | 91 | __be16 deh_len_hops; /* lower 10 bits are length, next 4 - hops */ |
f6e276ee AD |
92 | __be16 deh_sum; |
93 | __be16 deh_dnet; | |
94 | __be16 deh_snet; | |
1da177e4 LT |
95 | __u8 deh_dnode; |
96 | __u8 deh_snode; | |
97 | __u8 deh_dport; | |
98 | __u8 deh_sport; | |
99 | /* And netatalk apps expect to stick the type in themselves */ | |
100 | }; | |
101 | ||
102 | static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb) | |
103 | { | |
9c70220b | 104 | return (struct ddpehdr *)skb_transport_header(skb); |
1da177e4 LT |
105 | } |
106 | ||
1da177e4 LT |
107 | /* AppleTalk AARP headers */ |
108 | struct elapaarp { | |
f6e276ee | 109 | __be16 hw_type; |
1da177e4 LT |
110 | #define AARP_HW_TYPE_ETHERNET 1 |
111 | #define AARP_HW_TYPE_TOKENRING 2 | |
f6e276ee | 112 | __be16 pa_type; |
1da177e4 LT |
113 | __u8 hw_len; |
114 | __u8 pa_len; | |
115 | #define AARP_PA_ALEN 4 | |
f6e276ee | 116 | __be16 function; |
1da177e4 LT |
117 | #define AARP_REQUEST 1 |
118 | #define AARP_REPLY 2 | |
119 | #define AARP_PROBE 3 | |
6a878184 JB |
120 | __u8 hw_src[ETH_ALEN]; |
121 | __u8 pa_src_zero; | |
122 | __be16 pa_src_net; | |
123 | __u8 pa_src_node; | |
124 | __u8 hw_dst[ETH_ALEN]; | |
125 | __u8 pa_dst_zero; | |
126 | __be16 pa_dst_net; | |
127 | __u8 pa_dst_node; | |
128 | } __attribute__ ((packed)); | |
1da177e4 LT |
129 | |
130 | static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb) | |
131 | { | |
9c70220b | 132 | return (struct elapaarp *)skb_transport_header(skb); |
1da177e4 LT |
133 | } |
134 | ||
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 | |
143 | /* | |
144 | * Some value bigger than total retransmit time + a bit for last reply to | |
145 | * appear and to stop continual requests | |
146 | */ | |
147 | #define AARP_RESOLVE_TIME (10 * HZ) | |
148 | ||
149 | extern struct datalink_proto *ddp_dl, *aarp_dl; | |
150 | extern void aarp_proto_init(void); | |
151 | ||
152 | /* Inter module exports */ | |
153 | ||
154 | /* Give a device find its atif control structure */ | |
155 | static inline struct atalk_iface *atalk_find_dev(struct net_device *dev) | |
156 | { | |
157 | return dev->atalk_ptr; | |
158 | } | |
159 | ||
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, | |
163 | struct sk_buff *skb, | |
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); | |
171 | ||
172 | extern void aarp_cleanup_module(void); | |
173 | ||
174 | extern struct hlist_head atalk_sockets; | |
175 | extern rwlock_t atalk_sockets_lock; | |
176 | ||
177 | extern struct atalk_route *atalk_routes; | |
178 | extern rwlock_t atalk_routes_lock; | |
179 | ||
180 | extern struct atalk_iface *atalk_interfaces; | |
181 | extern rwlock_t atalk_interfaces_lock; | |
182 | ||
183 | extern struct atalk_route atrtr_default; | |
184 | ||
54047320 | 185 | extern const struct file_operations atalk_seq_arp_fops; |
1da177e4 LT |
186 | |
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; | |
191 | ||
192 | #ifdef CONFIG_SYSCTL | |
193 | extern void atalk_register_sysctl(void); | |
194 | extern void atalk_unregister_sysctl(void); | |
195 | #else | |
196 | #define atalk_register_sysctl() do { } while(0) | |
197 | #define atalk_unregister_sysctl() do { } while(0) | |
198 | #endif | |
199 | ||
200 | #ifdef CONFIG_PROC_FS | |
201 | extern int atalk_proc_init(void); | |
202 | extern void atalk_proc_exit(void); | |
203 | #else | |
204 | #define atalk_proc_init() ({ 0; }) | |
205 | #define atalk_proc_exit() do { } while(0) | |
206 | #endif /* CONFIG_PROC_FS */ | |
207 | ||
208 | #endif /* __KERNEL__ */ | |
209 | #endif /* __LINUX_ATALK_H__ */ |