0545e9dc6d
commit d1edce71135cc6d98c0a4b5729774542b676e769 Author: sophgo-forum-service <forum_service@sophgo.com> Date: Fri Mar 15 16:07:33 2024 +0800 [fix] recommend using ssh method to clone repo. [fix] fix sensor driver repo branch name.
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_X25_ASY_H
|
|
#define _LINUX_X25_ASY_H
|
|
|
|
/* X.25 asy configuration. */
|
|
#define SL_NRUNIT 256 /* MAX number of X.25 channels;
|
|
This can be overridden with
|
|
insmod -ox25_asy_maxdev=nnn */
|
|
#define SL_MTU 256
|
|
|
|
/* X25 async protocol characters. */
|
|
#define X25_END 0x7E /* indicates end of frame */
|
|
#define X25_ESC 0x7D /* indicates byte stuffing */
|
|
#define X25_ESCAPE(x) ((x)^0x20)
|
|
#define X25_UNESCAPE(x) ((x)^0x20)
|
|
|
|
|
|
struct x25_asy {
|
|
int magic;
|
|
|
|
/* Various fields. */
|
|
spinlock_t lock;
|
|
struct tty_struct *tty; /* ptr to TTY structure */
|
|
struct net_device *dev; /* easy for intr handling */
|
|
|
|
/* These are pointers to the malloc()ed frame buffers. */
|
|
unsigned char *rbuff; /* receiver buffer */
|
|
int rcount; /* received chars counter */
|
|
unsigned char *xbuff; /* transmitter buffer */
|
|
unsigned char *xhead; /* pointer to next byte to XMIT */
|
|
int xleft; /* bytes left in XMIT queue */
|
|
int buffsize; /* Max buffers sizes */
|
|
|
|
unsigned long flags; /* Flag values/ mode etc */
|
|
#define SLF_INUSE 0 /* Channel in use */
|
|
#define SLF_ESCAPE 1 /* ESC received */
|
|
#define SLF_ERROR 2 /* Parity, etc. error */
|
|
};
|
|
|
|
|
|
|
|
#define X25_ASY_MAGIC 0x5303
|
|
|
|
int x25_asy_init(struct net_device *dev);
|
|
|
|
#endif /* _LINUX_X25_ASY.H */
|