^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * slip.h Define the SLIP device driver interface and constants.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * NOTE: THIS FILE WILL BE MOVED TO THE LINUX INCLUDE DIRECTORY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * AS SOON AS POSSIBLE!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Version: @(#)slip.h 1.2.0 03/28/93
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Fixes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Alan Cox : Added slip mtu field.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Matt Dillon : Printable slip (borrowed from net2e)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Alan Cox : Added SL_SLIP_LOTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Dmitry Gorodchanin : A lot of changes in the 'struct slip'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Dmitry Gorodchanin : Added CSLIP statistics.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Stanislav Voronyi : Make line checking as created by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * Igor Chechik, RELCOM Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Craig Schlenter : Fixed #define bug that caused
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * CSLIP telnets to hang in 1.3.61-6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #ifndef _LINUX_SLIP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define _LINUX_SLIP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #if defined(CONFIG_INET) && defined(CONFIG_SLIP_COMPRESSED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) # define SL_INCLUDE_CSLIP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #ifdef SL_INCLUDE_CSLIP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) # define SL_MODE_DEFAULT SL_MODE_ADAPTIVE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) # define SL_MODE_DEFAULT SL_MODE_SLIP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* SLIP configuration. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define SL_NRUNIT 256 /* MAX number of SLIP channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) This can be overridden with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) insmod -oslip_maxdev=nnn */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define SL_MTU 296 /* 296; I am used to 600- FvK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* SLIP protocol characters. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define END 0300 /* indicates end of frame */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define ESC 0333 /* indicates byte stuffing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define ESC_END 0334 /* ESC ESC_END means END 'data' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define ESC_ESC 0335 /* ESC ESC_ESC means ESC 'data' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct slip {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) int magic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /* Various fields. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct tty_struct *tty; /* ptr to TTY structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct net_device *dev; /* easy for intr handling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct work_struct tx_work; /* Flushes transmit buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #ifdef SL_INCLUDE_CSLIP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct slcompress *slcomp; /* for header compression */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) unsigned char *cbuff; /* compression buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /* These are pointers to the malloc()ed frame buffers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) unsigned char *rbuff; /* receiver buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int rcount; /* received chars counter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) unsigned char *xbuff; /* transmitter buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) unsigned char *xhead; /* pointer to next byte to XMIT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int xleft; /* bytes left in XMIT queue */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) int mtu; /* Our mtu (to spot changes!) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int buffsize; /* Max buffers sizes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #ifdef CONFIG_SLIP_MODE_SLIP6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) int xdata, xbits; /* 6 bit slip controls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) unsigned long flags; /* Flag values/ mode etc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define SLF_INUSE 0 /* Channel in use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define SLF_ESCAPE 1 /* ESC received */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define SLF_ERROR 2 /* Parity, etc. error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define SLF_KEEPTEST 3 /* Keepalive test flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define SLF_OUTWAIT 4 /* is outpacket was flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) unsigned char mode; /* SLIP mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) unsigned char leased;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) pid_t pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define SL_MODE_SLIP 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define SL_MODE_CSLIP 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define SL_MODE_SLIP6 2 /* Matt Dillon's printable slip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define SL_MODE_CSLIP6 (SL_MODE_SLIP6|SL_MODE_CSLIP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define SL_MODE_AX25 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define SL_MODE_ADAPTIVE 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #ifdef CONFIG_SLIP_SMART
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) unsigned char outfill; /* # of sec between outfill packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) unsigned char keepalive; /* keepalive seconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct timer_list outfill_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct timer_list keepalive_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define SLIP_MAGIC 0x5302
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #endif /* _LINUX_SLIP.H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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