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1da177e4 LT |
1 | #ifndef __LINUX_ATALK_H__ |
2 | #define __LINUX_ATALK_H__ | |
3 | ||
9f3786dc DM |
4 | |
5 | #include <net/sock.h> | |
607ca46e | 6 | #include <uapi/linux/atalk.h> |
9f3786dc | 7 | |
1da177e4 LT |
8 | struct atalk_route { |
9 | struct net_device *dev; | |
10 | struct atalk_addr target; | |
11 | struct atalk_addr gateway; | |
12 | int flags; | |
13 | struct atalk_route *next; | |
14 | }; | |
15 | ||
16 | /** | |
17 | * struct atalk_iface - AppleTalk Interface | |
18 | * @dev - Network device associated with this interface | |
19 | * @address - Our address | |
20 | * @status - What are we doing? | |
21 | * @nets - Associated direct netrange | |
22 | * @next - next element in the list of interfaces | |
23 | */ | |
24 | struct atalk_iface { | |
25 | struct net_device *dev; | |
26 | struct atalk_addr address; | |
27 | int status; | |
28 | #define ATIF_PROBE 1 /* Probing for an address */ | |
29 | #define ATIF_PROBE_FAIL 2 /* Probe collided */ | |
30 | struct atalk_netrange nets; | |
31 | struct atalk_iface *next; | |
32 | }; | |
33 | ||
34 | struct atalk_sock { | |
35 | /* struct sock has to be the first member of atalk_sock */ | |
36 | struct sock sk; | |
f6e276ee AD |
37 | __be16 dest_net; |
38 | __be16 src_net; | |
1da177e4 LT |
39 | unsigned char dest_node; |
40 | unsigned char src_node; | |
41 | unsigned char dest_port; | |
42 | unsigned char src_port; | |
43 | }; | |
44 | ||
45 | static inline struct atalk_sock *at_sk(struct sock *sk) | |
46 | { | |
47 | return (struct atalk_sock *)sk; | |
48 | } | |
49 | ||
1da177e4 | 50 | struct ddpehdr { |
2a50f28c | 51 | __be16 deh_len_hops; /* lower 10 bits are length, next 4 - hops */ |
f6e276ee AD |
52 | __be16 deh_sum; |
53 | __be16 deh_dnet; | |
54 | __be16 deh_snet; | |
1da177e4 LT |
55 | __u8 deh_dnode; |
56 | __u8 deh_snode; | |
57 | __u8 deh_dport; | |
58 | __u8 deh_sport; | |
59 | /* And netatalk apps expect to stick the type in themselves */ | |
60 | }; | |
61 | ||
62 | static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb) | |
63 | { | |
9c70220b | 64 | return (struct ddpehdr *)skb_transport_header(skb); |
1da177e4 LT |
65 | } |
66 | ||
1da177e4 LT |
67 | /* AppleTalk AARP headers */ |
68 | struct elapaarp { | |
f6e276ee | 69 | __be16 hw_type; |
1da177e4 LT |
70 | #define AARP_HW_TYPE_ETHERNET 1 |
71 | #define AARP_HW_TYPE_TOKENRING 2 | |
f6e276ee | 72 | __be16 pa_type; |
1da177e4 LT |
73 | __u8 hw_len; |
74 | __u8 pa_len; | |
75 | #define AARP_PA_ALEN 4 | |
f6e276ee | 76 | __be16 function; |
1da177e4 LT |
77 | #define AARP_REQUEST 1 |
78 | #define AARP_REPLY 2 | |
79 | #define AARP_PROBE 3 | |
6a878184 JB |
80 | __u8 hw_src[ETH_ALEN]; |
81 | __u8 pa_src_zero; | |
82 | __be16 pa_src_net; | |
83 | __u8 pa_src_node; | |
84 | __u8 hw_dst[ETH_ALEN]; | |
85 | __u8 pa_dst_zero; | |
86 | __be16 pa_dst_net; | |
87 | __u8 pa_dst_node; | |
88 | } __attribute__ ((packed)); | |
1da177e4 LT |
89 | |
90 | static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb) | |
91 | { | |
9c70220b | 92 | return (struct elapaarp *)skb_transport_header(skb); |
1da177e4 LT |
93 | } |
94 | ||
95 | /* Not specified - how long till we drop a resolved entry */ | |
96 | #define AARP_EXPIRY_TIME (5 * 60 * HZ) | |
97 | /* Size of hash table */ | |
98 | #define AARP_HASH_SIZE 16 | |
99 | /* Fast retransmission timer when resolving */ | |
100 | #define AARP_TICK_TIME (HZ / 5) | |
101 | /* Send 10 requests then give up (2 seconds) */ | |
102 | #define AARP_RETRANSMIT_LIMIT 10 | |
103 | /* | |
104 | * Some value bigger than total retransmit time + a bit for last reply to | |
105 | * appear and to stop continual requests | |
106 | */ | |
107 | #define AARP_RESOLVE_TIME (10 * HZ) | |
108 | ||
109 | extern struct datalink_proto *ddp_dl, *aarp_dl; | |
110 | extern void aarp_proto_init(void); | |
111 | ||
112 | /* Inter module exports */ | |
113 | ||
114 | /* Give a device find its atif control structure */ | |
115 | static inline struct atalk_iface *atalk_find_dev(struct net_device *dev) | |
116 | { | |
117 | return dev->atalk_ptr; | |
118 | } | |
119 | ||
120 | extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev); | |
121 | extern struct net_device *atrtr_get_dev(struct atalk_addr *sa); | |
122 | extern int aarp_send_ddp(struct net_device *dev, | |
123 | struct sk_buff *skb, | |
124 | struct atalk_addr *sa, void *hwaddr); | |
125 | extern void aarp_device_down(struct net_device *dev); | |
126 | extern void aarp_probe_network(struct atalk_iface *atif); | |
127 | extern int aarp_proxy_probe_network(struct atalk_iface *atif, | |
128 | struct atalk_addr *sa); | |
129 | extern void aarp_proxy_remove(struct net_device *dev, | |
130 | struct atalk_addr *sa); | |
131 | ||
132 | extern void aarp_cleanup_module(void); | |
133 | ||
134 | extern struct hlist_head atalk_sockets; | |
135 | extern rwlock_t atalk_sockets_lock; | |
136 | ||
137 | extern struct atalk_route *atalk_routes; | |
138 | extern rwlock_t atalk_routes_lock; | |
139 | ||
140 | extern struct atalk_iface *atalk_interfaces; | |
141 | extern rwlock_t atalk_interfaces_lock; | |
142 | ||
143 | extern struct atalk_route atrtr_default; | |
144 | ||
54047320 | 145 | extern const struct file_operations atalk_seq_arp_fops; |
1da177e4 LT |
146 | |
147 | extern int sysctl_aarp_expiry_time; | |
148 | extern int sysctl_aarp_tick_time; | |
149 | extern int sysctl_aarp_retransmit_limit; | |
150 | extern int sysctl_aarp_resolve_time; | |
151 | ||
152 | #ifdef CONFIG_SYSCTL | |
153 | extern void atalk_register_sysctl(void); | |
154 | extern void atalk_unregister_sysctl(void); | |
155 | #else | |
156 | #define atalk_register_sysctl() do { } while(0) | |
157 | #define atalk_unregister_sysctl() do { } while(0) | |
158 | #endif | |
159 | ||
160 | #ifdef CONFIG_PROC_FS | |
161 | extern int atalk_proc_init(void); | |
162 | extern void atalk_proc_exit(void); | |
163 | #else | |
164 | #define atalk_proc_init() ({ 0; }) | |
165 | #define atalk_proc_exit() do { } while(0) | |
166 | #endif /* CONFIG_PROC_FS */ | |
167 | ||
1da177e4 | 168 | #endif /* __LINUX_ATALK_H__ */ |