Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / slip / slip.h

diff --git a/kernel/drivers/net/slip/slip.h b/kernel/drivers/net/slip/slip.h
new file mode 100644 (file)
index 0000000..cf32aad
--- /dev/null
+++ b/kernel/drivers/net/slip/slip.h
@@ -0,0 +1,102 @@
+/*
+ * slip.h      Define the SLIP device driver interface and constants.
+ *
+ * NOTE:       THIS FILE WILL BE MOVED TO THE LINUX INCLUDE DIRECTORY
+ *             AS SOON AS POSSIBLE!
+ *
+ * Version:    @(#)slip.h      1.2.0   03/28/93
+ *
+ * Fixes:
+ *             Alan Cox        :       Added slip mtu field.
+ *             Matt Dillon     :       Printable slip (borrowed from net2e)
+ *             Alan Cox        :       Added SL_SLIP_LOTS
+ *     Dmitry Gorodchanin      :       A lot of changes in the 'struct slip'
+ *     Dmitry Gorodchanin      :       Added CSLIP statistics.
+ *     Stanislav Voronyi       :       Make line checking as created by
+ *                                     Igor Chechik, RELCOM Corp.
+ *     Craig Schlenter         :       Fixed #define bug that caused
+ *                                     CSLIP telnets to hang in 1.3.61-6
+ *
+ * Author:     Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
+ */
+#ifndef _LINUX_SLIP_H
+#define _LINUX_SLIP_H
+
+
+#if defined(CONFIG_INET) && defined(CONFIG_SLIP_COMPRESSED)
+# define SL_INCLUDE_CSLIP
+#endif
+
+#ifdef SL_INCLUDE_CSLIP
+# define SL_MODE_DEFAULT SL_MODE_ADAPTIVE
+#else
+# define SL_MODE_DEFAULT SL_MODE_SLIP
+#endif
+
+/* SLIP configuration. */
+#define SL_NRUNIT      256             /* MAX number of SLIP channels;
+                                          This can be overridden with
+                                          insmod -oslip_maxdev=nnn     */
+#define SL_MTU         296             /* 296; I am used to 600- FvK   */
+
+/* SLIP protocol characters. */
+#define END             0300           /* indicates end of frame       */
+#define ESC             0333           /* indicates byte stuffing      */
+#define ESC_END         0334           /* ESC ESC_END means END 'data' */
+#define ESC_ESC         0335           /* ESC ESC_ESC means ESC 'data' */
+
+
+struct slip {
+  int                  magic;
+
+  /* Various fields. */
+  struct tty_struct    *tty;           /* ptr to TTY structure         */
+  struct net_device    *dev;           /* easy for intr handling       */
+  spinlock_t           lock;
+  struct work_struct   tx_work;        /* Flushes transmit buffer      */
+
+#ifdef SL_INCLUDE_CSLIP
+  struct slcompress    *slcomp;        /* for header compression       */
+  unsigned char                *cbuff;         /* compression buffer           */
+#endif
+
+  /* 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                  mtu;            /* Our mtu (to spot changes!)   */
+  int                   buffsize;       /* Max buffers sizes            */
+
+#ifdef CONFIG_SLIP_MODE_SLIP6
+  int                  xdata, xbits;   /* 6 bit slip controls          */
+#endif
+
+  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_KEEPTEST   3               /* Keepalive test flag          */
+#define SLF_OUTWAIT    4               /* is outpacket was flag        */
+
+  unsigned char                mode;           /* SLIP mode                    */
+  unsigned char                leased;
+  pid_t                        pid;
+#define SL_MODE_SLIP   0
+#define SL_MODE_CSLIP  1
+#define SL_MODE_SLIP6  2               /* Matt Dillon's printable slip */
+#define SL_MODE_CSLIP6 (SL_MODE_SLIP6|SL_MODE_CSLIP)
+#define SL_MODE_AX25   4
+#define SL_MODE_ADAPTIVE 8
+#ifdef CONFIG_SLIP_SMART
+  unsigned char                outfill;        /* # of sec between outfill packet */
+  unsigned char                keepalive;      /* keepalive seconds            */
+  struct timer_list    outfill_timer;
+  struct timer_list    keepalive_timer;
+#endif
+};
+
+#define SLIP_MAGIC 0x5302
+
+#endif /* _LINUX_SLIP.H */