Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Layer 2 defines |
| 3 | * |
| 4 | * Copyright 2008 by Karsten Keil <kkeil@novell.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #include <linux/mISDNif.h> |
| 18 | #include <linux/skbuff.h> |
| 19 | #include "fsm.h" |
| 20 | |
| 21 | #define MAX_WINDOW 8 |
| 22 | |
| 23 | struct manager { |
| 24 | struct mISDNchannel ch; |
| 25 | struct mISDNchannel bcast; |
| 26 | u_long options; |
| 27 | struct list_head layer2; |
| 28 | rwlock_t lock; |
| 29 | struct FsmInst deact; |
| 30 | struct FsmTimer datimer; |
| 31 | struct sk_buff_head sendq; |
| 32 | struct mISDNchannel *up; |
| 33 | u_int nextid; |
| 34 | u_int lastid; |
| 35 | }; |
| 36 | |
| 37 | struct teimgr { |
| 38 | int ri; |
| 39 | int rcnt; |
| 40 | struct FsmInst tei_m; |
| 41 | struct FsmTimer timer; |
| 42 | int tval, nval; |
| 43 | struct layer2 *l2; |
| 44 | struct manager *mgr; |
| 45 | }; |
| 46 | |
| 47 | struct laddr { |
| 48 | u_char A; |
| 49 | u_char B; |
| 50 | }; |
| 51 | |
| 52 | struct layer2 { |
| 53 | struct list_head list; |
| 54 | struct mISDNchannel ch; |
| 55 | u_long flag; |
| 56 | int id; |
| 57 | struct mISDNchannel *up; |
| 58 | signed char sapi; |
| 59 | signed char tei; |
| 60 | struct laddr addr; |
| 61 | u_int maxlen; |
| 62 | struct teimgr *tm; |
| 63 | u_int vs, va, vr; |
| 64 | int rc; |
| 65 | u_int window; |
| 66 | u_int sow; |
| 67 | struct FsmInst l2m; |
| 68 | struct FsmTimer t200, t203; |
| 69 | int T200, N200, T203; |
| 70 | u_int next_id; |
| 71 | u_int down_id; |
| 72 | struct sk_buff *windowar[MAX_WINDOW]; |
| 73 | struct sk_buff_head i_queue; |
| 74 | struct sk_buff_head ui_queue; |
| 75 | struct sk_buff_head down_queue; |
| 76 | struct sk_buff_head tmp_queue; |
| 77 | }; |
| 78 | |
| 79 | enum { |
| 80 | ST_L2_1, |
| 81 | ST_L2_2, |
| 82 | ST_L2_3, |
| 83 | ST_L2_4, |
| 84 | ST_L2_5, |
| 85 | ST_L2_6, |
| 86 | ST_L2_7, |
| 87 | ST_L2_8, |
| 88 | }; |
| 89 | |
| 90 | #define L2_STATE_COUNT (ST_L2_8+1) |
| 91 | |
| 92 | extern struct layer2 *create_l2(struct mISDNchannel *, u_int, |
Andreas Eversberg | 5b277b8 | 2009-05-25 00:50:02 -0700 | [diff] [blame] | 93 | u_long, int, int); |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 94 | extern int tei_l2(struct layer2 *, u_int, u_long arg); |
| 95 | |
| 96 | |
| 97 | /* from tei.c */ |
| 98 | extern int l2_tei(struct layer2 *, u_int, u_long arg); |
Karsten Keil | c5b61d5 | 2008-07-27 18:32:50 +0200 | [diff] [blame] | 99 | extern void TEIrelease(struct layer2 *); |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 100 | extern int TEIInit(u_int *); |
| 101 | extern void TEIFree(void); |
| 102 | |
| 103 | #define MAX_L2HEADER_LEN 4 |
| 104 | |
| 105 | #define RR 0x01 |
| 106 | #define RNR 0x05 |
| 107 | #define REJ 0x09 |
| 108 | #define SABME 0x6f |
| 109 | #define SABM 0x2f |
| 110 | #define DM 0x0f |
| 111 | #define UI 0x03 |
| 112 | #define DISC 0x43 |
| 113 | #define UA 0x63 |
| 114 | #define FRMR 0x87 |
| 115 | #define XID 0xaf |
| 116 | |
| 117 | #define CMD 0 |
| 118 | #define RSP 1 |
| 119 | |
| 120 | #define LC_FLUSH_WAIT 1 |
| 121 | |
| 122 | #define FLG_LAPB 0 |
| 123 | #define FLG_LAPD 1 |
| 124 | #define FLG_ORIG 2 |
| 125 | #define FLG_MOD128 3 |
| 126 | #define FLG_PEND_REL 4 |
| 127 | #define FLG_L3_INIT 5 |
| 128 | #define FLG_T200_RUN 6 |
| 129 | #define FLG_ACK_PEND 7 |
| 130 | #define FLG_REJEXC 8 |
| 131 | #define FLG_OWN_BUSY 9 |
| 132 | #define FLG_PEER_BUSY 10 |
| 133 | #define FLG_DCHAN_BUSY 11 |
| 134 | #define FLG_L1_ACTIV 12 |
| 135 | #define FLG_ESTAB_PEND 13 |
| 136 | #define FLG_PTP 14 |
| 137 | #define FLG_FIXED_TEI 15 |
| 138 | #define FLG_L2BLOCK 16 |
| 139 | #define FLG_L1_NOTREADY 17 |
| 140 | #define FLG_LAPD_NET 18 |