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1da177e4 LT |
1 | #ifndef __LINUX_ATALK_H__ |
2 | #define __LINUX_ATALK_H__ | |
3 | ||
85c09569 | 4 | #include <linux/types.h> |
32e9e25e DM |
5 | #include <asm/byteorder.h> |
6 | ||
1da177e4 LT |
7 | /* |
8 | * AppleTalk networking structures | |
9 | * | |
10 | * The following are directly referenced from the University Of Michigan | |
11 | * netatalk for compatibility reasons. | |
12 | */ | |
13 | #define ATPORT_FIRST 1 | |
14 | #define ATPORT_RESERVED 128 | |
15 | #define ATPORT_LAST 254 /* 254 is only legal on localtalk */ | |
16 | #define ATADDR_ANYNET (__u16)0 | |
17 | #define ATADDR_ANYNODE (__u8)0 | |
18 | #define ATADDR_ANYPORT (__u8)0 | |
19 | #define ATADDR_BCAST (__u8)255 | |
20 | #define DDP_MAXSZ 587 | |
21 | #define DDP_MAXHOPS 15 /* 4 bits of hop counter */ | |
22 | ||
23 | #define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0) | |
24 | ||
25 | struct atalk_addr { | |
f6e276ee | 26 | __be16 s_net; |
1da177e4 LT |
27 | __u8 s_node; |
28 | }; | |
29 | ||
30 | struct sockaddr_at { | |
31 | sa_family_t sat_family; | |
32 | __u8 sat_port; | |
33 | struct atalk_addr sat_addr; | |
34 | char sat_zero[8]; | |
35 | }; | |
36 | ||
37 | struct atalk_netrange { | |
38 | __u8 nr_phase; | |
f6e276ee AD |
39 | __be16 nr_firstnet; |
40 | __be16 nr_lastnet; | |
1da177e4 LT |
41 | }; |
42 | ||
9f3786dc DM |
43 | #ifdef __KERNEL__ |
44 | ||
45 | #include <net/sock.h> | |
46 | ||
1da177e4 LT |
47 | struct atalk_route { |
48 | struct net_device *dev; | |
49 | struct atalk_addr target; | |
50 | struct atalk_addr gateway; | |
51 | int flags; | |
52 | struct atalk_route *next; | |
53 | }; | |
54 | ||
55 | /** | |
56 | * struct atalk_iface - AppleTalk Interface | |
57 | * @dev - Network device associated with this interface | |
58 | * @address - Our address | |
59 | * @status - What are we doing? | |
60 | * @nets - Associated direct netrange | |
61 | * @next - next element in the list of interfaces | |
62 | */ | |
63 | struct atalk_iface { | |
64 | struct net_device *dev; | |
65 | struct atalk_addr address; | |
66 | int status; | |
67 | #define ATIF_PROBE 1 /* Probing for an address */ | |
68 | #define ATIF_PROBE_FAIL 2 /* Probe collided */ | |
69 | struct atalk_netrange nets; | |
70 | struct atalk_iface *next; | |
71 | }; | |
72 | ||
73 | struct atalk_sock { | |
74 | /* struct sock has to be the first member of atalk_sock */ | |
75 | struct sock sk; | |
f6e276ee AD |
76 | __be16 dest_net; |
77 | __be16 src_net; | |
1da177e4 LT |
78 | unsigned char dest_node; |
79 | unsigned char src_node; | |
80 | unsigned char dest_port; | |
81 | unsigned char src_port; | |
82 | }; | |
83 | ||
84 | static inline struct atalk_sock *at_sk(struct sock *sk) | |
85 | { | |
86 | return (struct atalk_sock *)sk; | |
87 | } | |
88 | ||
1da177e4 | 89 | struct ddpehdr { |
2a50f28c | 90 | __be16 deh_len_hops; /* lower 10 bits are length, next 4 - hops */ |
f6e276ee AD |
91 | __be16 deh_sum; |
92 | __be16 deh_dnet; | |
93 | __be16 deh_snet; | |
1da177e4 LT |
94 | __u8 deh_dnode; |
95 | __u8 deh_snode; | |
96 | __u8 deh_dport; | |
97 | __u8 deh_sport; | |
98 | /* And netatalk apps expect to stick the type in themselves */ | |
99 | }; | |
100 | ||
101 | static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb) | |
102 | { | |
9c70220b | 103 | return (struct ddpehdr *)skb_transport_header(skb); |
1da177e4 LT |
104 | } |
105 | ||
1da177e4 LT |
106 | /* AppleTalk AARP headers */ |
107 | struct elapaarp { | |
f6e276ee | 108 | __be16 hw_type; |
1da177e4 LT |
109 | #define AARP_HW_TYPE_ETHERNET 1 |
110 | #define AARP_HW_TYPE_TOKENRING 2 | |
f6e276ee | 111 | __be16 pa_type; |
1da177e4 LT |
112 | __u8 hw_len; |
113 | __u8 pa_len; | |
114 | #define AARP_PA_ALEN 4 | |
f6e276ee | 115 | __be16 function; |
1da177e4 LT |
116 | #define AARP_REQUEST 1 |
117 | #define AARP_REPLY 2 | |
118 | #define AARP_PROBE 3 | |
6a878184 JB |
119 | __u8 hw_src[ETH_ALEN]; |
120 | __u8 pa_src_zero; | |
121 | __be16 pa_src_net; | |
122 | __u8 pa_src_node; | |
123 | __u8 hw_dst[ETH_ALEN]; | |
124 | __u8 pa_dst_zero; | |
125 | __be16 pa_dst_net; | |
126 | __u8 pa_dst_node; | |
127 | } __attribute__ ((packed)); | |
1da177e4 LT |
128 | |
129 | static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb) | |
130 | { | |
9c70220b | 131 | return (struct elapaarp *)skb_transport_header(skb); |
1da177e4 LT |
132 | } |
133 | ||
134 | /* Not specified - how long till we drop a resolved entry */ | |
135 | #define AARP_EXPIRY_TIME (5 * 60 * HZ) | |
136 | /* Size of hash table */ | |
137 | #define AARP_HASH_SIZE 16 | |
138 | /* Fast retransmission timer when resolving */ | |
139 | #define AARP_TICK_TIME (HZ / 5) | |
140 | /* Send 10 requests then give up (2 seconds) */ | |
141 | #define AARP_RETRANSMIT_LIMIT 10 | |
142 | /* | |
143 | * Some value bigger than total retransmit time + a bit for last reply to | |
144 | * appear and to stop continual requests | |
145 | */ | |
146 | #define AARP_RESOLVE_TIME (10 * HZ) | |
147 | ||
148 | extern struct datalink_proto *ddp_dl, *aarp_dl; | |
149 | extern void aarp_proto_init(void); | |
150 | ||
151 | /* Inter module exports */ | |
152 | ||
153 | /* Give a device find its atif control structure */ | |
154 | static inline struct atalk_iface *atalk_find_dev(struct net_device *dev) | |
155 | { | |
156 | return dev->atalk_ptr; | |
157 | } | |
158 | ||
159 | extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev); | |
160 | extern struct net_device *atrtr_get_dev(struct atalk_addr *sa); | |
161 | extern int aarp_send_ddp(struct net_device *dev, | |
162 | struct sk_buff *skb, | |
163 | struct atalk_addr *sa, void *hwaddr); | |
164 | extern void aarp_device_down(struct net_device *dev); | |
165 | extern void aarp_probe_network(struct atalk_iface *atif); | |
166 | extern int aarp_proxy_probe_network(struct atalk_iface *atif, | |
167 | struct atalk_addr *sa); | |
168 | extern void aarp_proxy_remove(struct net_device *dev, | |
169 | struct atalk_addr *sa); | |
170 | ||
171 | extern void aarp_cleanup_module(void); | |
172 | ||
173 | extern struct hlist_head atalk_sockets; | |
174 | extern rwlock_t atalk_sockets_lock; | |
175 | ||
176 | extern struct atalk_route *atalk_routes; | |
177 | extern rwlock_t atalk_routes_lock; | |
178 | ||
179 | extern struct atalk_iface *atalk_interfaces; | |
180 | extern rwlock_t atalk_interfaces_lock; | |
181 | ||
182 | extern struct atalk_route atrtr_default; | |
183 | ||
54047320 | 184 | extern const struct file_operations atalk_seq_arp_fops; |
1da177e4 LT |
185 | |
186 | extern int sysctl_aarp_expiry_time; | |
187 | extern int sysctl_aarp_tick_time; | |
188 | extern int sysctl_aarp_retransmit_limit; | |
189 | extern int sysctl_aarp_resolve_time; | |
190 | ||
191 | #ifdef CONFIG_SYSCTL | |
192 | extern void atalk_register_sysctl(void); | |
193 | extern void atalk_unregister_sysctl(void); | |
194 | #else | |
195 | #define atalk_register_sysctl() do { } while(0) | |
196 | #define atalk_unregister_sysctl() do { } while(0) | |
197 | #endif | |
198 | ||
199 | #ifdef CONFIG_PROC_FS | |
200 | extern int atalk_proc_init(void); | |
201 | extern void atalk_proc_exit(void); | |
202 | #else | |
203 | #define atalk_proc_init() ({ 0; }) | |
204 | #define atalk_proc_exit() do { } while(0) | |
205 | #endif /* CONFIG_PROC_FS */ | |
206 | ||
207 | #endif /* __KERNEL__ */ | |
208 | #endif /* __LINUX_ATALK_H__ */ |