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10#ifndef _X25_H
11#define _X25_H
12#include <linux/x25.h>
13
14#define X25_ADDR_LEN 16
15
16#define X25_MAX_L2_LEN 18
17
18#define X25_STD_MIN_LEN 3
19#define X25_EXT_MIN_LEN 4
20
21#define X25_GFI_SEQ_MASK 0x30
22#define X25_GFI_STDSEQ 0x10
23#define X25_GFI_EXTSEQ 0x20
24
25#define X25_Q_BIT 0x80
26#define X25_D_BIT 0x40
27#define X25_STD_M_BIT 0x10
28#define X25_EXT_M_BIT 0x01
29
30#define X25_CALL_REQUEST 0x0B
31#define X25_CALL_ACCEPTED 0x0F
32#define X25_CLEAR_REQUEST 0x13
33#define X25_CLEAR_CONFIRMATION 0x17
34#define X25_DATA 0x00
35#define X25_INTERRUPT 0x23
36#define X25_INTERRUPT_CONFIRMATION 0x27
37#define X25_RR 0x01
38#define X25_RNR 0x05
39#define X25_REJ 0x09
40#define X25_RESET_REQUEST 0x1B
41#define X25_RESET_CONFIRMATION 0x1F
42#define X25_REGISTRATION_REQUEST 0xF3
43#define X25_REGISTRATION_CONFIRMATION 0xF7
44#define X25_RESTART_REQUEST 0xFB
45#define X25_RESTART_CONFIRMATION 0xFF
46#define X25_DIAGNOSTIC 0xF1
47#define X25_ILLEGAL 0xFD
48
49
50
51#define X25_COND_ACK_PENDING 0x01
52#define X25_COND_OWN_RX_BUSY 0x02
53#define X25_COND_PEER_RX_BUSY 0x04
54
55
56enum {
57 X25_STATE_0,
58 X25_STATE_1,
59 X25_STATE_2,
60 X25_STATE_3,
61 X25_STATE_4
62};
63
64enum {
65 X25_LINK_STATE_0,
66 X25_LINK_STATE_1,
67 X25_LINK_STATE_2,
68 X25_LINK_STATE_3
69};
70
71#define X25_DEFAULT_T20 (180 * HZ)
72#define X25_DEFAULT_T21 (200 * HZ)
73#define X25_DEFAULT_T22 (180 * HZ)
74#define X25_DEFAULT_T23 (180 * HZ)
75#define X25_DEFAULT_T2 (3 * HZ)
76
77#define X25_DEFAULT_WINDOW_SIZE 2
78#define X25_DEFAULT_PACKET_SIZE X25_PS128
79#define X25_DEFAULT_THROUGHPUT 0x0A
80#define X25_DEFAULT_REVERSE 0x00
81
82#define X25_SMODULUS 8
83#define X25_EMODULUS 128
84
85
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87
88
89#define X25_FAC_CLASS_MASK 0xC0
90
91#define X25_FAC_CLASS_A 0x00
92#define X25_FAC_CLASS_B 0x40
93#define X25_FAC_CLASS_C 0x80
94#define X25_FAC_CLASS_D 0xC0
95
96#define X25_FAC_REVERSE 0x01
97#define X25_FAC_THROUGHPUT 0x02
98#define X25_FAC_PACKET_SIZE 0x42
99#define X25_FAC_WINDOW_SIZE 0x43
100
101#define X25_MAX_FAC_LEN 20
102#define X25_MAX_CUD_LEN 128
103
104struct x25_route {
105 struct x25_route *next;
106 x25_address address;
107 unsigned int sigdigits;
108 struct net_device *dev;
109};
110
111struct x25_neigh {
112 struct x25_neigh *next;
113 struct net_device *dev;
114 unsigned int state;
115 unsigned int extended;
116 struct sk_buff_head queue;
117 unsigned long t20;
118 struct timer_list t20timer;
119 unsigned long global_facil_mask;
120};
121
122typedef struct {
123 x25_address source_addr, dest_addr;
124 struct x25_neigh *neighbour;
125 unsigned int lci;
126 unsigned char state, condition, qbitincl, intflag;
127 unsigned short vs, vr, va, vl;
128 unsigned long t2, t21, t22, t23;
129 unsigned short fraglen;
130 struct sk_buff_head ack_queue;
131 struct sk_buff_head fragment_queue;
132 struct sk_buff_head interrupt_in_queue;
133 struct sk_buff_head interrupt_out_queue;
134 struct sock *sk;
135 struct timer_list timer;
136 struct x25_causediag causediag;
137 struct x25_facilities facilities;
138 struct x25_calluserdata calluserdata;
139 unsigned long vc_facil_mask;
140} x25_cb;
141
142
143extern int sysctl_x25_restart_request_timeout;
144extern int sysctl_x25_call_request_timeout;
145extern int sysctl_x25_reset_request_timeout;
146extern int sysctl_x25_clear_request_timeout;
147extern int sysctl_x25_ack_holdback_timeout;
148
149extern int x25_addr_ntoa(unsigned char *, x25_address *, x25_address *);
150extern int x25_addr_aton(unsigned char *, x25_address *, x25_address *);
151extern unsigned int x25_new_lci(struct x25_neigh *);
152extern struct sock *x25_find_socket(unsigned int, struct x25_neigh *);
153extern void x25_destroy_socket(struct sock *);
154extern int x25_rx_call_request(struct sk_buff *, struct x25_neigh *, unsigned int);
155extern void x25_kill_by_neigh(struct x25_neigh *);
156
157
158extern void x25_send_frame(struct sk_buff *, struct x25_neigh *);
159extern int x25_lapb_receive_frame(struct sk_buff *, struct net_device *, struct packet_type *);
160extern int x25_llc_receive_frame(struct sk_buff *, struct net_device *, struct packet_type *);
161extern void x25_establish_link(struct x25_neigh *);
162extern void x25_terminate_link(struct x25_neigh *);
163
164
165extern int x25_parse_facilities(struct sk_buff *, struct x25_facilities *, unsigned long *);
166extern int x25_create_facilities(unsigned char *, struct x25_facilities *, unsigned long);
167extern int x25_negotiate_facilities(struct sk_buff *, struct sock *, struct x25_facilities *);
168extern void x25_limit_facilities(struct x25_facilities *, struct x25_neigh *);
169
170
171extern int x25_process_rx_frame(struct sock *, struct sk_buff *);
172extern int x25_backlog_rcv(struct sock *, struct sk_buff *);
173
174
175extern void x25_link_control(struct sk_buff *, struct x25_neigh *, unsigned short);
176extern void x25_link_device_up(struct net_device *);
177extern void x25_link_device_down(struct net_device *);
178extern void x25_link_established(struct x25_neigh *);
179extern void x25_link_terminated(struct x25_neigh *);
180extern void x25_transmit_restart_request(struct x25_neigh *);
181extern void x25_transmit_restart_confirmation(struct x25_neigh *);
182extern void x25_transmit_diagnostic(struct x25_neigh *, unsigned char);
183extern void x25_transmit_clear_request(struct x25_neigh *, unsigned int, unsigned char);
184extern void x25_transmit_link(struct sk_buff *, struct x25_neigh *);
185extern int x25_subscr_ioctl(unsigned int, void *);
186extern struct x25_neigh *x25_get_neigh(struct net_device *);
187extern void x25_link_free(void);
188
189
190extern int x25_output(struct sock *, struct sk_buff *);
191extern void x25_kick(struct sock *);
192extern void x25_enquiry_response(struct sock *);
193
194
195extern struct net_device *x25_get_route(x25_address *);
196extern struct net_device *x25_dev_get(char *);
197extern void x25_route_device_down(struct net_device *);
198extern int x25_route_ioctl(unsigned int, void *);
199extern int x25_routes_get_info(char *, char **, off_t, int);
200extern void x25_route_free(void);
201
202
203extern void x25_clear_queues(struct sock *);
204extern void x25_frames_acked(struct sock *, unsigned short);
205extern void x25_requeue_frames(struct sock *);
206extern int x25_validate_nr(struct sock *, unsigned short);
207extern void x25_write_internal(struct sock *, int);
208extern int x25_decode(struct sock *, struct sk_buff *, int *, int *, int *, int *, int *);
209extern void x25_disconnect(struct sock *, int, unsigned char, unsigned char);
210
211
212extern void x25_start_heartbeat(struct sock *);
213extern void x25_start_t2timer(struct sock *);
214extern void x25_start_t21timer(struct sock *);
215extern void x25_start_t22timer(struct sock *);
216extern void x25_start_t23timer(struct sock *);
217extern void x25_stop_heartbeat(struct sock *);
218extern void x25_stop_timer(struct sock *);
219extern unsigned long x25_display_timer(struct sock *);
220extern void x25_check_rbuf(struct sock *);
221
222
223extern void x25_register_sysctl(void);
224extern void x25_unregister_sysctl(void);
225struct x25_skb_cb {
226 unsigned flags;
227};
228#define X25_SKB_CB(s) ((struct x25_skb_cb *) ((s)->cb))
229#endif
230
