patch-2.3.21 linux/drivers/net/wan/x25_asy.h

• Lines: 59
• Date: Mon Oct 11 10:13:25 1999
• Orig file: v2.3.20/linux/drivers/net/wan/x25_asy.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.20/linux/drivers/net/wan/x25_asy.h linux/drivers/net/wan/x25_asy.h
@@ -0,0 +1,58 @@
+#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. */
+  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. */
+  unsigned long		rx_packets;	/* inbound frames counter	*/
+  unsigned long         tx_packets;     /* outbound frames counter      */
+  unsigned long		rx_bytes;	/* inbound byte counte		*/
+  unsigned long         tx_bytes;       /* outbound byte counter	*/
+  unsigned long         rx_errors;      /* Parity, etc. errors          */
+  unsigned long         tx_errors;      /* Planned stuff                */
+  unsigned long         rx_dropped;     /* No memory for skb            */
+  unsigned long         tx_dropped;     /* When MTU change              */
+  unsigned long         rx_over_errors; /* Frame bigger then X.25 buf.  */
+
+  int			mtu;		/* Our mtu (to spot changes!)   */
+  int                   buffsize;       /* Max buffers sizes            */
+
+  unsigned int		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 */