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
11 #define NR_NETWORK_LEN 15
12 #define NR_TRANSPORT_LEN 5
13
14 #define NR_PROTO_IP 0x0C
15
16 #define NR_PROTOEXT 0x00
17 #define NR_CONNREQ 0x01
18 #define NR_CONNACK 0x02
19 #define NR_DISCREQ 0x03
20 #define NR_DISCACK 0x04
21 #define NR_INFO 0x05
22 #define NR_INFOACK 0x06
23
24 #define NR_CHOKE_FLAG 0x80
25 #define NR_NAK_FLAG 0x40
26 #define NR_MORE_FLAG 0x20
27
28 /* Define Link State constants. */
29 enum {
30 NR_STATE_0,
31 NR_STATE_1,
32 NR_STATE_2,
33 NR_STATE_3
34 };
35
36 #define NR_COND_ACK_PENDING 0x01
37 #define NR_COND_REJECT 0x02
38 #define NR_COND_PEER_RX_BUSY 0x04
39 #define NR_COND_OWN_RX_BUSY 0x08
40
41 #define NR_DEFAULT_T1 (120 * HZ) /* Outstanding frames - 120 seconds */
42 #define NR_DEFAULT_T2 (5 * HZ) /* Response delay - 5 seconds */
43 #define NR_DEFAULT_N2 3 /* Number of Retries - 3 */
44 #define NR_DEFAULT_T4 (180 * HZ) /* Busy Delay - 180 seconds */
45 #define NR_DEFAULT_IDLE (0 * 60 * HZ) /* No Activity Timeout - none */
46 #define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */
47 #define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */
48 #define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */
49 #define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */
50 #define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */
51 #define NR_DEFAULT_FAILS 2 /* Link fails until route fails */
52
53 #define NR_MODULUS 256
54 #define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */
55 #define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */
56
57 typedef struct {
58 ax25_address user_addr, source_addr, dest_addr;
59 struct net_device *device;
60 unsigned char my_index, my_id;
61 unsigned char your_index, your_id;
62 unsigned char state, condition, bpqext, window;
63 unsigned short vs, vr, va, vl;
64 unsigned char n2, n2count;
65 unsigned long t1, t2, t4, idle;
66 unsigned short fraglen;
67 struct timer_list t1timer;
68 struct timer_list t2timer;
69 struct timer_list t4timer;
70 struct timer_list idletimer;
71 struct sk_buff_head ack_queue;
72 struct sk_buff_head reseq_queue;
73 struct sk_buff_head frag_queue;
74 struct sock *sk; /* Backlink to socket */
75 } nr_cb;
76
77 struct nr_neigh {
78 struct nr_neigh *next;
79 ax25_address callsign;
80 ax25_digi *digipeat;
81 ax25_cb *ax25;
82 struct net_device *dev;
83 unsigned char quality;
84 unsigned char locked;
85 unsigned short count;
86 unsigned int number;
87 unsigned char failed;
88 };
89
90 struct nr_route {
91 unsigned char quality;
92 unsigned char obs_count;
93 struct nr_neigh *neighbour;
94 };
95
96 struct nr_node {
97 struct nr_node *next;
98 ax25_address callsign;
99 char mnemonic[7];
100 unsigned char which;
101 unsigned char count;
102 struct nr_route routes[3];
103 };
104
105 /* af_netrom.c */
106 extern int sysctl_netrom_default_path_quality;
107 extern int sysctl_netrom_obsolescence_count_initialiser;
108 extern int sysctl_netrom_network_ttl_initialiser;
109 extern int sysctl_netrom_transport_timeout;
110 extern int sysctl_netrom_transport_maximum_tries;
111 extern int sysctl_netrom_transport_acknowledge_delay;
112 extern int sysctl_netrom_transport_busy_delay;
113 extern int sysctl_netrom_transport_requested_window_size;
114 extern int sysctl_netrom_transport_no_activity_timeout;
115 extern int sysctl_netrom_routing_control;
116 extern int sysctl_netrom_link_fails_count;
117 extern int nr_rx_frame(struct sk_buff *, struct net_device *);
118 extern void nr_destroy_socket(struct sock *);
119
120 /* nr_dev.c */
121 extern int nr_rx_ip(struct sk_buff *, struct net_device *);
122 extern int nr_init(struct net_device *);
123
124 /* nr_in.c */
125 extern int nr_process_rx_frame(struct sock *, struct sk_buff *);
126
127 /* nr_loopback.c */
128 extern void nr_loopback_init(void);
129 extern void nr_loopback_clear(void);
130 extern int nr_loopback_queue(struct sk_buff *);
131
132 /* nr_out.c */
133 extern void nr_output(struct sock *, struct sk_buff *);
134 extern void nr_send_nak_frame(struct sock *);
135 extern void nr_kick(struct sock *);
136 extern void nr_transmit_buffer(struct sock *, struct sk_buff *);
137 extern void nr_establish_data_link(struct sock *);
138 extern void nr_enquiry_response(struct sock *);
139 extern void nr_check_iframes_acked(struct sock *, unsigned short);
140
141 /* nr_route.c */
142 extern void nr_rt_device_down(struct net_device *);
143 extern struct net_device *nr_dev_first(void);
144 extern struct net_device *nr_dev_get(ax25_address *);
145 extern int nr_rt_ioctl(unsigned int, void *);
146 extern void nr_link_failed(ax25_cb *, int);
147 extern int nr_route_frame(struct sk_buff *, ax25_cb *);
148 extern int nr_nodes_get_info(char *, char **, off_t, int);
149 extern int nr_neigh_get_info(char *, char **, off_t, int);
150 extern void nr_rt_free(void);
151
152 /* nr_subr.c */
153 extern void nr_clear_queues(struct sock *);
154 extern void nr_frames_acked(struct sock *, unsigned short);
155 extern void nr_requeue_frames(struct sock *);
156 extern int nr_validate_nr(struct sock *, unsigned short);
157 extern int nr_in_rx_window(struct sock *, unsigned short);
158 extern void nr_write_internal(struct sock *, int);
159 extern void nr_transmit_refusal(struct sk_buff *, int);
160 extern void nr_disconnect(struct sock *, int);
161
162 /* nr_timer.c */
163 extern void nr_start_heartbeat(struct sock *);
164 extern void nr_start_t1timer(struct sock *);
165 extern void nr_start_t2timer(struct sock *);
166 extern void nr_start_t4timer(struct sock *);
167 extern void nr_start_idletimer(struct sock *);
168 extern void nr_stop_heartbeat(struct sock *);
169 extern void nr_stop_t1timer(struct sock *);
170 extern void nr_stop_t2timer(struct sock *);
171 extern void nr_stop_t4timer(struct sock *);
172 extern void nr_stop_idletimer(struct sock *);
173 extern int nr_t1timer_running(struct sock *);
174
175 /* sysctl_net_netrom.c */
176 extern void nr_register_sysctl(void);
177 extern void nr_unregister_sysctl(void);
178
179 #endif
180
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