| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Layer 2 defines |
| * |
| * Copyright 2008 by Karsten Keil <kkeil@novell.com> |
| */ |
| |
| #include <linux/mISDNif.h> |
| #include <linux/skbuff.h> |
| #include "fsm.h" |
| |
| #define MAX_WINDOW 8 |
| |
| struct manager { |
| struct mISDNchannel ch; |
| struct mISDNchannel bcast; |
| u_long options; |
| struct list_head layer2; |
| rwlock_t lock; |
| struct FsmInst deact; |
| struct FsmTimer datimer; |
| struct sk_buff_head sendq; |
| struct mISDNchannel *up; |
| u_int nextid; |
| u_int lastid; |
| }; |
| |
| struct teimgr { |
| int ri; |
| int rcnt; |
| struct FsmInst tei_m; |
| struct FsmTimer timer; |
| int tval, nval; |
| struct layer2 *l2; |
| struct manager *mgr; |
| }; |
| |
| struct laddr { |
| u_char A; |
| u_char B; |
| }; |
| |
| struct layer2 { |
| struct list_head list; |
| struct mISDNchannel ch; |
| u_long flag; |
| int id; |
| struct mISDNchannel *up; |
| signed char sapi; |
| signed char tei; |
| struct laddr addr; |
| u_int maxlen; |
| struct teimgr *tm; |
| u_int vs, va, vr; |
| int rc; |
| u_int window; |
| u_int sow; |
| struct FsmInst l2m; |
| struct FsmTimer t200, t203; |
| int T200, N200, T203; |
| u_int next_id; |
| u_int down_id; |
| struct sk_buff *windowar[MAX_WINDOW]; |
| struct sk_buff_head i_queue; |
| struct sk_buff_head ui_queue; |
| struct sk_buff_head down_queue; |
| struct sk_buff_head tmp_queue; |
| }; |
| |
| enum { |
| ST_L2_1, |
| ST_L2_2, |
| ST_L2_3, |
| ST_L2_4, |
| ST_L2_5, |
| ST_L2_6, |
| ST_L2_7, |
| ST_L2_8, |
| }; |
| |
| #define L2_STATE_COUNT (ST_L2_8 + 1) |
| |
| extern struct layer2 *create_l2(struct mISDNchannel *, u_int, |
| u_long, int, int); |
| extern int tei_l2(struct layer2 *, u_int, u_long arg); |
| |
| |
| /* from tei.c */ |
| extern int l2_tei(struct layer2 *, u_int, u_long arg); |
| extern void TEIrelease(struct layer2 *); |
| extern int TEIInit(u_int *); |
| extern void TEIFree(void); |
| |
| #define MAX_L2HEADER_LEN 4 |
| |
| #define RR 0x01 |
| #define RNR 0x05 |
| #define REJ 0x09 |
| #define SABME 0x6f |
| #define SABM 0x2f |
| #define DM 0x0f |
| #define UI 0x03 |
| #define DISC 0x43 |
| #define UA 0x63 |
| #define FRMR 0x87 |
| #define XID 0xaf |
| |
| #define CMD 0 |
| #define RSP 1 |
| |
| #define LC_FLUSH_WAIT 1 |
| |
| #define FLG_LAPB 0 |
| #define FLG_LAPD 1 |
| #define FLG_ORIG 2 |
| #define FLG_MOD128 3 |
| #define FLG_PEND_REL 4 |
| #define FLG_L3_INIT 5 |
| #define FLG_T200_RUN 6 |
| #define FLG_ACK_PEND 7 |
| #define FLG_REJEXC 8 |
| #define FLG_OWN_BUSY 9 |
| #define FLG_PEER_BUSY 10 |
| #define FLG_DCHAN_BUSY 11 |
| #define FLG_L1_ACTIV 12 |
| #define FLG_ESTAB_PEND 13 |
| #define FLG_PTP 14 |
| #define FLG_FIXED_TEI 15 |
| #define FLG_L2BLOCK 16 |
| #define FLG_L1_NOTREADY 17 |
| #define FLG_LAPD_NET 18 |
