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 | |
9 | #include <linux/netrom.h> | |
10 | #include <linux/list.h> | |
11 | #include <net/sock.h> | |
12 | ||
13 | #define NR_NETWORK_LEN 15 | |
14 | #define NR_TRANSPORT_LEN 5 | |
15 | ||
16 | #define NR_PROTO_IP 0x0C | |
17 | ||
18 | #define NR_PROTOEXT 0x00 | |
19 | #define NR_CONNREQ 0x01 | |
20 | #define NR_CONNACK 0x02 | |
21 | #define NR_DISCREQ 0x03 | |
22 | #define NR_DISCACK 0x04 | |
23 | #define NR_INFO 0x05 | |
24 | #define NR_INFOACK 0x06 | |
25 | ||
26 | #define NR_CHOKE_FLAG 0x80 | |
27 | #define NR_NAK_FLAG 0x40 | |
28 | #define NR_MORE_FLAG 0x20 | |
29 | ||
30 | /* Define Link State constants. */ | |
31 | enum { | |
32 | NR_STATE_0, | |
33 | NR_STATE_1, | |
34 | NR_STATE_2, | |
35 | NR_STATE_3 | |
36 | }; | |
37 | ||
38 | #define NR_COND_ACK_PENDING 0x01 | |
39 | #define NR_COND_REJECT 0x02 | |
40 | #define NR_COND_PEER_RX_BUSY 0x04 | |
41 | #define NR_COND_OWN_RX_BUSY 0x08 | |
42 | ||
43 | #define NR_DEFAULT_T1 (120 * HZ) /* Outstanding frames - 120 seconds */ | |
44 | #define NR_DEFAULT_T2 (5 * HZ) /* Response delay - 5 seconds */ | |
45 | #define NR_DEFAULT_N2 3 /* Number of Retries - 3 */ | |
46 | #define NR_DEFAULT_T4 (180 * HZ) /* Busy Delay - 180 seconds */ | |
47 | #define NR_DEFAULT_IDLE (0 * 60 * HZ) /* No Activity Timeout - none */ | |
48 | #define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */ | |
49 | #define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */ | |
50 | #define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */ | |
51 | #define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */ | |
52 | #define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */ | |
53 | #define NR_DEFAULT_FAILS 2 /* Link fails until route fails */ | |
54 | ||
55 | #define NR_MODULUS 256 | |
56 | #define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */ | |
57 | #define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */ | |
58 | ||
59 | struct nr_sock { | |
60 | struct sock sock; | |
61 | ax25_address user_addr, source_addr, dest_addr; | |
62 | struct net_device *device; | |
63 | unsigned char my_index, my_id; | |
64 | unsigned char your_index, your_id; | |
65 | unsigned char state, condition, bpqext, window; | |
66 | unsigned short vs, vr, va, vl; | |
67 | unsigned char n2, n2count; | |
68 | unsigned long t1, t2, t4, idle; | |
69 | unsigned short fraglen; | |
70 | struct timer_list t1timer; | |
71 | struct timer_list t2timer; | |
72 | struct timer_list t4timer; | |
73 | struct timer_list idletimer; | |
74 | struct sk_buff_head ack_queue; | |
75 | struct sk_buff_head reseq_queue; | |
76 | struct sk_buff_head frag_queue; | |
77 | }; | |
78 | ||
79 | #define nr_sk(sk) ((struct nr_sock *)(sk)) | |
80 | ||
81 | struct nr_neigh { | |
82 | struct hlist_node neigh_node; | |
83 | ax25_address callsign; | |
84 | ax25_digi *digipeat; | |
85 | ax25_cb *ax25; | |
86 | struct net_device *dev; | |
87 | unsigned char quality; | |
88 | unsigned char locked; | |
89 | unsigned short count; | |
90 | unsigned int number; | |
91 | unsigned char failed; | |
92 | atomic_t refcount; | |
93 | }; | |
94 | ||
95 | struct nr_route { | |
96 | unsigned char quality; | |
97 | unsigned char obs_count; | |
98 | struct nr_neigh *neighbour; | |
99 | }; | |
100 | ||
101 | struct nr_node { | |
102 | struct hlist_node node_node; | |
103 | ax25_address callsign; | |
104 | char mnemonic[7]; | |
105 | unsigned char which; | |
106 | unsigned char count; | |
107 | struct nr_route routes[3]; | |
108 | atomic_t refcount; | |
109 | spinlock_t node_lock; | |
110 | }; | |
111 | ||
112 | /********************************************************************* | |
113 | * nr_node & nr_neigh lists, refcounting and locking | |
114 | *********************************************************************/ | |
115 | ||
116 | #define nr_node_hold(__nr_node) \ | |
117 | atomic_inc(&((__nr_node)->refcount)) | |
118 | ||
119 | static __inline__ void nr_node_put(struct nr_node *nr_node) | |
120 | { | |
121 | if (atomic_dec_and_test(&nr_node->refcount)) { | |
122 | kfree(nr_node); | |
123 | } | |
124 | } | |
125 | ||
126 | #define nr_neigh_hold(__nr_neigh) \ | |
127 | atomic_inc(&((__nr_neigh)->refcount)) | |
128 | ||
129 | static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh) | |
130 | { | |
131 | if (atomic_dec_and_test(&nr_neigh->refcount)) { | |
132 | if (nr_neigh->digipeat != NULL) | |
133 | kfree(nr_neigh->digipeat); | |
134 | kfree(nr_neigh); | |
135 | } | |
136 | } | |
137 | ||
138 | /* nr_node_lock and nr_node_unlock also hold/put the node's refcounter. | |
139 | */ | |
140 | static __inline__ void nr_node_lock(struct nr_node *nr_node) | |
141 | { | |
142 | nr_node_hold(nr_node); | |
143 | spin_lock_bh(&nr_node->node_lock); | |
144 | } | |
145 | ||
146 | static __inline__ void nr_node_unlock(struct nr_node *nr_node) | |
147 | { | |
148 | spin_unlock_bh(&nr_node->node_lock); | |
149 | nr_node_put(nr_node); | |
150 | } | |
151 | ||
152 | #define nr_neigh_for_each(__nr_neigh, node, list) \ | |
153 | hlist_for_each_entry(__nr_neigh, node, list, neigh_node) | |
154 | ||
155 | #define nr_neigh_for_each_safe(__nr_neigh, node, node2, list) \ | |
156 | hlist_for_each_entry_safe(__nr_neigh, node, node2, list, neigh_node) | |
157 | ||
158 | #define nr_node_for_each(__nr_node, node, list) \ | |
159 | hlist_for_each_entry(__nr_node, node, list, node_node) | |
160 | ||
161 | #define nr_node_for_each_safe(__nr_node, node, node2, list) \ | |
162 | hlist_for_each_entry_safe(__nr_node, node, node2, list, node_node) | |
163 | ||
164 | ||
165 | /*********************************************************************/ | |
166 | ||
167 | /* af_netrom.c */ | |
168 | extern int sysctl_netrom_default_path_quality; | |
169 | extern int sysctl_netrom_obsolescence_count_initialiser; | |
170 | extern int sysctl_netrom_network_ttl_initialiser; | |
171 | extern int sysctl_netrom_transport_timeout; | |
172 | extern int sysctl_netrom_transport_maximum_tries; | |
173 | extern int sysctl_netrom_transport_acknowledge_delay; | |
174 | extern int sysctl_netrom_transport_busy_delay; | |
175 | extern int sysctl_netrom_transport_requested_window_size; | |
176 | extern int sysctl_netrom_transport_no_activity_timeout; | |
177 | extern int sysctl_netrom_routing_control; | |
178 | extern int sysctl_netrom_link_fails_count; | |
179 | extern int nr_rx_frame(struct sk_buff *, struct net_device *); | |
180 | extern void nr_destroy_socket(struct sock *); | |
181 | ||
182 | /* nr_dev.c */ | |
183 | extern int nr_rx_ip(struct sk_buff *, struct net_device *); | |
184 | extern void nr_setup(struct net_device *); | |
185 | ||
186 | /* nr_in.c */ | |
187 | extern int nr_process_rx_frame(struct sock *, struct sk_buff *); | |
188 | ||
189 | /* nr_loopback.c */ | |
190 | extern void nr_loopback_init(void); | |
191 | extern void nr_loopback_clear(void); | |
192 | extern int nr_loopback_queue(struct sk_buff *); | |
193 | ||
194 | /* nr_out.c */ | |
195 | extern void nr_output(struct sock *, struct sk_buff *); | |
196 | extern void nr_send_nak_frame(struct sock *); | |
197 | extern void nr_kick(struct sock *); | |
198 | extern void nr_transmit_buffer(struct sock *, struct sk_buff *); | |
199 | extern void nr_establish_data_link(struct sock *); | |
200 | extern void nr_enquiry_response(struct sock *); | |
201 | extern void nr_check_iframes_acked(struct sock *, unsigned short); | |
202 | ||
203 | /* nr_route.c */ | |
204 | extern void nr_rt_device_down(struct net_device *); | |
205 | extern struct net_device *nr_dev_first(void); | |
206 | extern struct net_device *nr_dev_get(ax25_address *); | |
207 | extern int nr_rt_ioctl(unsigned int, void __user *); | |
208 | extern void nr_link_failed(ax25_cb *, int); | |
209 | extern int nr_route_frame(struct sk_buff *, ax25_cb *); | |
210 | extern struct file_operations nr_nodes_fops; | |
211 | extern struct file_operations nr_neigh_fops; | |
212 | extern void nr_rt_free(void); | |
213 | ||
214 | /* nr_subr.c */ | |
215 | extern void nr_clear_queues(struct sock *); | |
216 | extern void nr_frames_acked(struct sock *, unsigned short); | |
217 | extern void nr_requeue_frames(struct sock *); | |
218 | extern int nr_validate_nr(struct sock *, unsigned short); | |
219 | extern int nr_in_rx_window(struct sock *, unsigned short); | |
220 | extern void nr_write_internal(struct sock *, int); | |
221 | extern void nr_transmit_refusal(struct sk_buff *, int); | |
222 | extern void nr_disconnect(struct sock *, int); | |
223 | ||
224 | /* nr_timer.c */ | |
225 | extern void nr_init_timers(struct sock *sk); | |
226 | extern void nr_start_heartbeat(struct sock *); | |
227 | extern void nr_start_t1timer(struct sock *); | |
228 | extern void nr_start_t2timer(struct sock *); | |
229 | extern void nr_start_t4timer(struct sock *); | |
230 | extern void nr_start_idletimer(struct sock *); | |
231 | extern void nr_stop_heartbeat(struct sock *); | |
232 | extern void nr_stop_t1timer(struct sock *); | |
233 | extern void nr_stop_t2timer(struct sock *); | |
234 | extern void nr_stop_t4timer(struct sock *); | |
235 | extern void nr_stop_idletimer(struct sock *); | |
236 | extern int nr_t1timer_running(struct sock *); | |
237 | ||
238 | /* sysctl_net_netrom.c */ | |
239 | extern void nr_register_sysctl(void); | |
240 | extern void nr_unregister_sysctl(void); | |
241 | ||
242 | #endif |