forked from Minki/linux
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
#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 */
|
|
|
|
/* X.25 interface statistics. */
|
|
struct net_device_stats stats;
|
|
|
|
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 SLF_OUTWAIT 4 /* Waiting for output */
|
|
};
|
|
|
|
|
|
|
|
#define X25_ASY_MAGIC 0x5303
|
|
|
|
extern int x25_asy_init(struct net_device *dev);
|
|
|
|
#endif /* _LINUX_X25_ASY.H */
|