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8 #include <linux/mISDNif.h>
9 #include <linux/skbuff.h>
10 #include "fsm.h"
11
12 #define MAX_WINDOW 8
13
14 struct manager {
15 struct mISDNchannel ch;
16 struct mISDNchannel bcast;
17 u_long options;
18 struct list_head layer2;
19 rwlock_t lock;
20 struct FsmInst deact;
21 struct FsmTimer datimer;
22 struct sk_buff_head sendq;
23 struct mISDNchannel *up;
24 u_int nextid;
25 u_int lastid;
26 };
27
28 struct teimgr {
29 int ri;
30 int rcnt;
31 struct FsmInst tei_m;
32 struct FsmTimer timer;
33 int tval, nval;
34 struct layer2 *l2;
35 struct manager *mgr;
36 };
37
38 struct laddr {
39 u_char A;
40 u_char B;
41 };
42
43 struct layer2 {
44 struct list_head list;
45 struct mISDNchannel ch;
46 u_long flag;
47 int id;
48 struct mISDNchannel *up;
49 signed char sapi;
50 signed char tei;
51 struct laddr addr;
52 u_int maxlen;
53 struct teimgr *tm;
54 u_int vs, va, vr;
55 int rc;
56 u_int window;
57 u_int sow;
58 struct FsmInst l2m;
59 struct FsmTimer t200, t203;
60 int T200, N200, T203;
61 u_int next_id;
62 u_int down_id;
63 struct sk_buff *windowar[MAX_WINDOW];
64 struct sk_buff_head i_queue;
65 struct sk_buff_head ui_queue;
66 struct sk_buff_head down_queue;
67 struct sk_buff_head tmp_queue;
68 };
69
70 enum {
71 ST_L2_1,
72 ST_L2_2,
73 ST_L2_3,
74 ST_L2_4,
75 ST_L2_5,
76 ST_L2_6,
77 ST_L2_7,
78 ST_L2_8,
79 };
80
81 #define L2_STATE_COUNT (ST_L2_8 + 1)
82
83 extern struct layer2 *create_l2(struct mISDNchannel *, u_int,
84 u_long, int, int);
85 extern int tei_l2(struct layer2 *, u_int, u_long arg);
86
87
88
89 extern int l2_tei(struct layer2 *, u_int, u_long arg);
90 extern void TEIrelease(struct layer2 *);
91 extern int TEIInit(u_int *);
92 extern void TEIFree(void);
93
94 #define MAX_L2HEADER_LEN 4
95
96 #define RR 0x01
97 #define RNR 0x05
98 #define REJ 0x09
99 #define SABME 0x6f
100 #define SABM 0x2f
101 #define DM 0x0f
102 #define UI 0x03
103 #define DISC 0x43
104 #define UA 0x63
105 #define FRMR 0x87
106 #define XID 0xaf
107
108 #define CMD 0
109 #define RSP 1
110
111 #define LC_FLUSH_WAIT 1
112
113 #define FLG_LAPB 0
114 #define FLG_LAPD 1
115 #define FLG_ORIG 2
116 #define FLG_MOD128 3
117 #define FLG_PEND_REL 4
118 #define FLG_L3_INIT 5
119 #define FLG_T200_RUN 6
120 #define FLG_ACK_PEND 7
121 #define FLG_REJEXC 8
122 #define FLG_OWN_BUSY 9
123 #define FLG_PEER_BUSY 10
124 #define FLG_DCHAN_BUSY 11
125 #define FLG_L1_ACTIV 12
126 #define FLG_ESTAB_PEND 13
127 #define FLG_PTP 14
128 #define FLG_FIXED_TEI 15
129 #define FLG_L2BLOCK 16
130 #define FLG_L1_NOTREADY 17
131 #define FLG_LAPD_NET 18