1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* Declarations of NET/ROM type objects.
*
* Jonathan Naylor G4KLX 9/4/95
*/
#ifndef _NETROM_H
#define _NETROM_H
#include <linux/netrom.h>
#define NR_SLOWHZ 10 /* Run timing at 1/10 second */
#define NR_NETWORK_LEN 15
#define NR_TRANSPORT_LEN 5
#define NR_PROTO_IP 0x0C
#define NR_PROTOEXT 0x00
#define NR_CONNREQ 0x01
#define NR_CONNACK 0x02
#define NR_DISCREQ 0x03
#define NR_DISCACK 0x04
#define NR_INFO 0x05
#define NR_INFOACK 0x06
#define NR_CHOKE_FLAG 0x80
#define NR_NAK_FLAG 0x40
#define NR_MORE_FLAG 0x20
/* Define Link State constants. */
#define NR_STATE_0 0
#define NR_STATE_1 1
#define NR_STATE_2 2
#define NR_STATE_3 3
#define NR_COND_ACK_PENDING 0x01
#define NR_COND_REJECT 0x02
#define NR_COND_PEER_RX_BUSY 0x04
#define NR_COND_OWN_RX_BUSY 0x08
#define NR_DEFAULT_T1 (120 * NR_SLOWHZ) /* Outstanding frames - 120 seconds */
#define NR_DEFAULT_T2 (5 * NR_SLOWHZ) /* Response delay - 5 seconds */
#define NR_DEFAULT_N2 3 /* Number of Retries - 3 */
#define NR_DEFAULT_T4 (180 * NR_SLOWHZ) /* Busy Delay - 180 seconds */
#define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */
#define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */
#define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */
#define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */
#define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */
#define NR_DEFAULT_FAILS 2 /* Link fails until route fails */
#define NR_MODULUS 256
#define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */
#define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */
typedef struct {
ax25_address user_addr, source_addr, dest_addr;
struct device *device;
unsigned char my_index, my_id;
unsigned char your_index, your_id;
unsigned char state, condition, bpqext, window;
unsigned short vs, vr, va, vl;
unsigned char n2, n2count;
unsigned short t1, t2, t4;
unsigned short t1timer, t2timer, t4timer;
unsigned short fraglen;
struct sk_buff_head ack_queue;
struct sk_buff_head reseq_queue;
struct sk_buff_head frag_queue;
struct sock *sk; /* Backlink to socket */
} nr_cb;
struct nr_neigh {
struct nr_neigh *next;
ax25_address callsign;
ax25_digi *digipeat;
ax25_cb *ax25;
struct device *dev;
unsigned char quality;
unsigned char locked;
unsigned short count;
unsigned int number;
unsigned char failed;
};
struct nr_route {
unsigned char quality;
unsigned char obs_count;
struct nr_neigh *neighbour;
};
struct nr_node {
struct nr_node *next;
ax25_address callsign;
char mnemonic[7];
unsigned char which;
unsigned char count;
struct nr_route routes[3];
};
/* af_netrom.c */
extern int sysctl_netrom_default_path_quality;
extern int sysctl_netrom_obsolescence_count_initialiser;
extern int sysctl_netrom_network_ttl_initialiser;
extern int sysctl_netrom_transport_timeout;
extern int sysctl_netrom_transport_maximum_tries;
extern int sysctl_netrom_transport_acknowledge_delay;
extern int sysctl_netrom_transport_busy_delay;
extern int sysctl_netrom_transport_requested_window_size;
extern int sysctl_netrom_routing_control;
extern int sysctl_netrom_link_fails_count;
extern int nr_rx_frame(struct sk_buff *, struct device *);
extern void nr_destroy_socket(struct sock *);
/* nr_dev.c */
extern int nr_rx_ip(struct sk_buff *, struct device *);
extern int nr_init(struct device *);
#include <net/nrcall.h>
/* nr_in.c */
extern int nr_process_rx_frame(struct sock *, struct sk_buff *);
/* nr_out.c */
extern void nr_output(struct sock *, struct sk_buff *);
extern void nr_send_nak_frame(struct sock *);
extern void nr_kick(struct sock *);
extern void nr_transmit_buffer(struct sock *, struct sk_buff *);
extern void nr_establish_data_link(struct sock *);
extern void nr_enquiry_response(struct sock *);
extern void nr_check_iframes_acked(struct sock *, unsigned short);
/* nr_route.c */
extern void nr_rt_device_down(struct device *);
extern struct device *nr_dev_first(void);
extern struct device *nr_dev_get(ax25_address *);
extern int nr_rt_ioctl(unsigned int, void *);
extern void nr_link_failed(ax25_cb *, int);
extern int nr_route_frame(struct sk_buff *, ax25_cb *);
extern int nr_nodes_get_info(char *, char **, off_t, int, int);
extern int nr_neigh_get_info(char *, char **, off_t, int, int);
extern void nr_rt_free(void);
/* nr_subr.c */
extern void nr_clear_queues(struct sock *);
extern void nr_frames_acked(struct sock *, unsigned short);
extern void nr_requeue_frames(struct sock *);
extern int nr_validate_nr(struct sock *, unsigned short);
extern int nr_in_rx_window(struct sock *, unsigned short);
extern void nr_write_internal(struct sock *, int);
extern void nr_transmit_dm(struct sk_buff *, int);
/* nr_timer.c */
extern void nr_set_timer(struct sock *);
/* sysctl_net_netrom.c */
extern void nr_register_sysctl(void);
extern void nr_unregister_sysctl(void);
/* nr_loopback.c */
extern void nr_loopback_init(void);
extern void nr_loopback_clear(void);
extern int nr_loopback_queue(struct sk_buff *);
#endif
|
