Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Declarations of NET/ROM type objects. | |
3 | * | |
4 | * Jonathan Naylor G4KLX 9/4/95 | |
5 | */ | |
6 | ||
7 | #ifndef _NETROM_H | |
8 | #define _NETROM_H | |
b88a762b | 9 | |
1da177e4 LT |
10 | #include <linux/netrom.h> |
11 | #include <linux/list.h> | |
12 | #include <net/sock.h> | |
13 | ||
14 | #define NR_NETWORK_LEN 15 | |
15 | #define NR_TRANSPORT_LEN 5 | |
16 | ||
17 | #define NR_PROTO_IP 0x0C | |
18 | ||
19 | #define NR_PROTOEXT 0x00 | |
20 | #define NR_CONNREQ 0x01 | |
21 | #define NR_CONNACK 0x02 | |
22 | #define NR_DISCREQ 0x03 | |
23 | #define NR_DISCACK 0x04 | |
24 | #define NR_INFO 0x05 | |
25 | #define NR_INFOACK 0x06 | |
e21ce8c7 | 26 | #define NR_RESET 0x07 |
1da177e4 LT |
27 | |
28 | #define NR_CHOKE_FLAG 0x80 | |
29 | #define NR_NAK_FLAG 0x40 | |
30 | #define NR_MORE_FLAG 0x20 | |
31 | ||
32 | /* Define Link State constants. */ | |
33 | enum { | |
34 | NR_STATE_0, | |
35 | NR_STATE_1, | |
36 | NR_STATE_2, | |
37 | NR_STATE_3 | |
38 | }; | |
39 | ||
40 | #define NR_COND_ACK_PENDING 0x01 | |
41 | #define NR_COND_REJECT 0x02 | |
42 | #define NR_COND_PEER_RX_BUSY 0x04 | |
43 | #define NR_COND_OWN_RX_BUSY 0x08 | |
44 | ||
4d8937d0 RB |
45 | #define NR_DEFAULT_T1 120000 /* Outstanding frames - 120 seconds */ |
46 | #define NR_DEFAULT_T2 5000 /* Response delay - 5 seconds */ | |
1da177e4 | 47 | #define NR_DEFAULT_N2 3 /* Number of Retries - 3 */ |
4d8937d0 RB |
48 | #define NR_DEFAULT_T4 180000 /* Busy Delay - 180 seconds */ |
49 | #define NR_DEFAULT_IDLE 0 /* No Activity Timeout - none */ | |
1da177e4 LT |
50 | #define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */ |
51 | #define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */ | |
52 | #define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */ | |
53 | #define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */ | |
54 | #define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */ | |
55 | #define NR_DEFAULT_FAILS 2 /* Link fails until route fails */ | |
e21ce8c7 | 56 | #define NR_DEFAULT_RESET 0 /* Sent / accept reset cmds? */ |
1da177e4 LT |
57 | |
58 | #define NR_MODULUS 256 | |
59 | #define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */ | |
60 | #define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */ | |
61 | ||
b88a762b RB |
62 | struct nr_private { |
63 | struct net_device_stats stats; | |
64 | }; | |
65 | ||
1da177e4 LT |
66 | struct nr_sock { |
67 | struct sock sock; | |
68 | ax25_address user_addr, source_addr, dest_addr; | |
69 | struct net_device *device; | |
70 | unsigned char my_index, my_id; | |
71 | unsigned char your_index, your_id; | |
72 | unsigned char state, condition, bpqext, window; | |
73 | unsigned short vs, vr, va, vl; | |
74 | unsigned char n2, n2count; | |
75 | unsigned long t1, t2, t4, idle; | |
76 | unsigned short fraglen; | |
77 | struct timer_list t1timer; | |
78 | struct timer_list t2timer; | |
79 | struct timer_list t4timer; | |
80 | struct timer_list idletimer; | |
81 | struct sk_buff_head ack_queue; | |
82 | struct sk_buff_head reseq_queue; | |
83 | struct sk_buff_head frag_queue; | |
84 | }; | |
85 | ||
86 | #define nr_sk(sk) ((struct nr_sock *)(sk)) | |
87 | ||
88 | struct nr_neigh { | |
89 | struct hlist_node neigh_node; | |
90 | ax25_address callsign; | |
91 | ax25_digi *digipeat; | |
92 | ax25_cb *ax25; | |
93 | struct net_device *dev; | |
94 | unsigned char quality; | |
95 | unsigned char locked; | |
96 | unsigned short count; | |
97 | unsigned int number; | |
98 | unsigned char failed; | |
99 | atomic_t refcount; | |
100 | }; | |
101 | ||
102 | struct nr_route { | |
103 | unsigned char quality; | |
104 | unsigned char obs_count; | |
105 | struct nr_neigh *neighbour; | |
106 | }; | |
107 | ||
108 | struct nr_node { | |
109 | struct hlist_node node_node; | |
110 | ax25_address callsign; | |
111 | char mnemonic[7]; | |
112 | unsigned char which; | |
113 | unsigned char count; | |
114 | struct nr_route routes[3]; | |
115 | atomic_t refcount; | |
116 | spinlock_t node_lock; | |
117 | }; | |
118 | ||
119 | /********************************************************************* | |
120 | * nr_node & nr_neigh lists, refcounting and locking | |
121 | *********************************************************************/ | |
122 | ||
123 | #define nr_node_hold(__nr_node) \ | |
124 | atomic_inc(&((__nr_node)->refcount)) | |
125 | ||
126 | static __inline__ void nr_node_put(struct nr_node *nr_node) | |
127 | { | |
128 | if (atomic_dec_and_test(&nr_node->refcount)) { | |
129 | kfree(nr_node); | |
130 | } | |
131 | } | |
132 | ||
133 | #define nr_neigh_hold(__nr_neigh) \ | |
134 | atomic_inc(&((__nr_neigh)->refcount)) | |
135 | ||
136 | static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh) | |
137 | { | |
138 | if (atomic_dec_and_test(&nr_neigh->refcount)) { | |
b4558ea9 | 139 | kfree(nr_neigh->digipeat); |
1da177e4 LT |
140 | kfree(nr_neigh); |
141 | } | |
142 | } | |
143 | ||
144 | /* nr_node_lock and nr_node_unlock also hold/put the node's refcounter. | |
145 | */ | |
146 | static __inline__ void nr_node_lock(struct nr_node *nr_node) | |
147 | { | |
148 | nr_node_hold(nr_node); | |
149 | spin_lock_bh(&nr_node->node_lock); | |
150 | } | |
151 | ||
152 | static __inline__ void nr_node_unlock(struct nr_node *nr_node) | |
153 | { | |
154 | spin_unlock_bh(&nr_node->node_lock); | |
155 | nr_node_put(nr_node); | |
156 | } | |
157 | ||
158 | #define nr_neigh_for_each(__nr_neigh, node, list) \ | |
159 | hlist_for_each_entry(__nr_neigh, node, list, neigh_node) | |
160 | ||
161 | #define nr_neigh_for_each_safe(__nr_neigh, node, node2, list) \ | |
162 | hlist_for_each_entry_safe(__nr_neigh, node, node2, list, neigh_node) | |
163 | ||
164 | #define nr_node_for_each(__nr_node, node, list) \ | |
165 | hlist_for_each_entry(__nr_node, node, list, node_node) | |
166 | ||
167 | #define nr_node_for_each_safe(__nr_node, node, node2, list) \ | |
168 | hlist_for_each_entry_safe(__nr_node, node, node2, list, node_node) | |
169 | ||
170 | ||
171 | /*********************************************************************/ | |
172 | ||
173 | /* af_netrom.c */ | |
174 | extern int sysctl_netrom_default_path_quality; | |
175 | extern int sysctl_netrom_obsolescence_count_initialiser; | |
176 | extern int sysctl_netrom_network_ttl_initialiser; | |
177 | extern int sysctl_netrom_transport_timeout; | |
178 | extern int sysctl_netrom_transport_maximum_tries; | |
179 | extern int sysctl_netrom_transport_acknowledge_delay; | |
180 | extern int sysctl_netrom_transport_busy_delay; | |
181 | extern int sysctl_netrom_transport_requested_window_size; | |
182 | extern int sysctl_netrom_transport_no_activity_timeout; | |
183 | extern int sysctl_netrom_routing_control; | |
184 | extern int sysctl_netrom_link_fails_count; | |
e21ce8c7 RB |
185 | extern int sysctl_netrom_reset_circuit; |
186 | ||
1da177e4 LT |
187 | extern int nr_rx_frame(struct sk_buff *, struct net_device *); |
188 | extern void nr_destroy_socket(struct sock *); | |
189 | ||
190 | /* nr_dev.c */ | |
191 | extern int nr_rx_ip(struct sk_buff *, struct net_device *); | |
192 | extern void nr_setup(struct net_device *); | |
193 | ||
194 | /* nr_in.c */ | |
195 | extern int nr_process_rx_frame(struct sock *, struct sk_buff *); | |
196 | ||
197 | /* nr_loopback.c */ | |
198 | extern void nr_loopback_init(void); | |
199 | extern void nr_loopback_clear(void); | |
200 | extern int nr_loopback_queue(struct sk_buff *); | |
201 | ||
202 | /* nr_out.c */ | |
203 | extern void nr_output(struct sock *, struct sk_buff *); | |
204 | extern void nr_send_nak_frame(struct sock *); | |
205 | extern void nr_kick(struct sock *); | |
206 | extern void nr_transmit_buffer(struct sock *, struct sk_buff *); | |
207 | extern void nr_establish_data_link(struct sock *); | |
208 | extern void nr_enquiry_response(struct sock *); | |
209 | extern void nr_check_iframes_acked(struct sock *, unsigned short); | |
210 | ||
211 | /* nr_route.c */ | |
212 | extern void nr_rt_device_down(struct net_device *); | |
213 | extern struct net_device *nr_dev_first(void); | |
214 | extern struct net_device *nr_dev_get(ax25_address *); | |
215 | extern int nr_rt_ioctl(unsigned int, void __user *); | |
216 | extern void nr_link_failed(ax25_cb *, int); | |
217 | extern int nr_route_frame(struct sk_buff *, ax25_cb *); | |
54047320 AV |
218 | extern const struct file_operations nr_nodes_fops; |
219 | extern const struct file_operations nr_neigh_fops; | |
1da177e4 LT |
220 | extern void nr_rt_free(void); |
221 | ||
222 | /* nr_subr.c */ | |
223 | extern void nr_clear_queues(struct sock *); | |
224 | extern void nr_frames_acked(struct sock *, unsigned short); | |
225 | extern void nr_requeue_frames(struct sock *); | |
226 | extern int nr_validate_nr(struct sock *, unsigned short); | |
227 | extern int nr_in_rx_window(struct sock *, unsigned short); | |
228 | extern void nr_write_internal(struct sock *, int); | |
e21ce8c7 RB |
229 | |
230 | extern void __nr_transmit_reply(struct sk_buff *skb, int mine, | |
231 | unsigned char cmdflags); | |
232 | ||
233 | /* | |
234 | * This routine is called when a Connect Acknowledge with the Choke Flag | |
235 | * set is needed to refuse a connection. | |
236 | */ | |
237 | #define nr_transmit_refusal(skb, mine) \ | |
238 | do { \ | |
239 | __nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG); \ | |
240 | } while (0) | |
241 | ||
242 | /* | |
243 | * This routine is called when we don't have a circuit matching an incoming | |
244 | * NET/ROM packet. This is an G8PZT Xrouter extension. | |
245 | */ | |
246 | #define nr_transmit_reset(skb, mine) \ | |
247 | do { \ | |
248 | __nr_transmit_reply((skb), (mine), NR_RESET); \ | |
249 | } while (0) | |
250 | ||
1da177e4 LT |
251 | extern void nr_disconnect(struct sock *, int); |
252 | ||
253 | /* nr_timer.c */ | |
254 | extern void nr_init_timers(struct sock *sk); | |
255 | extern void nr_start_heartbeat(struct sock *); | |
256 | extern void nr_start_t1timer(struct sock *); | |
257 | extern void nr_start_t2timer(struct sock *); | |
258 | extern void nr_start_t4timer(struct sock *); | |
259 | extern void nr_start_idletimer(struct sock *); | |
260 | extern void nr_stop_heartbeat(struct sock *); | |
261 | extern void nr_stop_t1timer(struct sock *); | |
262 | extern void nr_stop_t2timer(struct sock *); | |
263 | extern void nr_stop_t4timer(struct sock *); | |
264 | extern void nr_stop_idletimer(struct sock *); | |
265 | extern int nr_t1timer_running(struct sock *); | |
266 | ||
267 | /* sysctl_net_netrom.c */ | |
268 | extern void nr_register_sysctl(void); | |
269 | extern void nr_unregister_sysctl(void); | |
270 | ||
271 | #endif |