diff options
Diffstat (limited to 'drivers/net/slip.h')
| -rw-r--r-- | drivers/net/slip.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/net/slip.h b/drivers/net/slip.h new file mode 100644 index 000000000000..ab3efe66a642 --- /dev/null +++ b/drivers/net/slip.h | |||
| @@ -0,0 +1,121 @@ | |||
| 1 | /* | ||
| 2 | * slip.h Define the SLIP device driver interface and constants. | ||
| 3 | * | ||
| 4 | * NOTE: THIS FILE WILL BE MOVED TO THE LINUX INCLUDE DIRECTORY | ||
| 5 | * AS SOON AS POSSIBLE! | ||
| 6 | * | ||
| 7 | * Version: @(#)slip.h 1.2.0 03/28/93 | ||
| 8 | * | ||
| 9 | * Fixes: | ||
| 10 | * Alan Cox : Added slip mtu field. | ||
| 11 | * Matt Dillon : Printable slip (borrowed from net2e) | ||
| 12 | * Alan Cox : Added SL_SLIP_LOTS | ||
| 13 | * Dmitry Gorodchanin : A lot of changes in the 'struct slip' | ||
| 14 | * Dmitry Gorodchanin : Added CSLIP statistics. | ||
| 15 | * Stanislav Voronyi : Make line checking as created by | ||
| 16 | * Igor Chechik, RELCOM Corp. | ||
| 17 | * Craig Schlenter : Fixed #define bug that caused | ||
| 18 | * CSLIP telnets to hang in 1.3.61-6 | ||
| 19 | * | ||
| 20 | * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org> | ||
| 21 | */ | ||
| 22 | #ifndef _LINUX_SLIP_H | ||
| 23 | #define _LINUX_SLIP_H | ||
| 24 | |||
| 25 | #include <linux/config.h> | ||
| 26 | |||
| 27 | #if defined(CONFIG_INET) && defined(CONFIG_SLIP_COMPRESSED) | ||
| 28 | # define SL_INCLUDE_CSLIP | ||
| 29 | #endif | ||
| 30 | |||
| 31 | #ifdef SL_INCLUDE_CSLIP | ||
| 32 | # define SL_MODE_DEFAULT SL_MODE_ADAPTIVE | ||
| 33 | #else | ||
| 34 | # define SL_MODE_DEFAULT SL_MODE_SLIP | ||
| 35 | #endif | ||
| 36 | |||
| 37 | /* SLIP configuration. */ | ||
| 38 | #define SL_NRUNIT 256 /* MAX number of SLIP channels; | ||
| 39 | This can be overridden with | ||
| 40 | insmod -oslip_maxdev=nnn */ | ||
| 41 | #define SL_MTU 296 /* 296; I am used to 600- FvK */ | ||
| 42 | |||
| 43 | /* SLIP protocol characters. */ | ||
| 44 | #define END 0300 /* indicates end of frame */ | ||
| 45 | #define ESC 0333 /* indicates byte stuffing */ | ||
| 46 | #define ESC_END 0334 /* ESC ESC_END means END 'data' */ | ||
| 47 | #define ESC_ESC 0335 /* ESC ESC_ESC means ESC 'data' */ | ||
| 48 | |||
| 49 | |||
| 50 | struct slip { | ||
| 51 | int magic; | ||
| 52 | |||
| 53 | /* Various fields. */ | ||
| 54 | struct tty_struct *tty; /* ptr to TTY structure */ | ||
| 55 | struct net_device *dev; /* easy for intr handling */ | ||
| 56 | spinlock_t lock; | ||
| 57 | |||
| 58 | #ifdef SL_INCLUDE_CSLIP | ||
| 59 | struct slcompress *slcomp; /* for header compression */ | ||
| 60 | unsigned char *cbuff; /* compression buffer */ | ||
| 61 | #endif | ||
| 62 | |||
| 63 | /* These are pointers to the malloc()ed frame buffers. */ | ||
| 64 | unsigned char *rbuff; /* receiver buffer */ | ||
| 65 | int rcount; /* received chars counter */ | ||
| 66 | unsigned char *xbuff; /* transmitter buffer */ | ||
| 67 | unsigned char *xhead; /* pointer to next byte to XMIT */ | ||
| 68 | int xleft; /* bytes left in XMIT queue */ | ||
| 69 | |||
| 70 | /* SLIP interface statistics. */ | ||
| 71 | unsigned long rx_packets; /* inbound frames counter */ | ||
| 72 | unsigned long tx_packets; /* outbound frames counter */ | ||
| 73 | unsigned long rx_bytes; /* inbound byte counte */ | ||
| 74 | unsigned long tx_bytes; /* outbound byte counter */ | ||
| 75 | unsigned long rx_errors; /* Parity, etc. errors */ | ||
| 76 | unsigned long tx_errors; /* Planned stuff */ | ||
| 77 | unsigned long rx_dropped; /* No memory for skb */ | ||
| 78 | unsigned long tx_dropped; /* When MTU change */ | ||
| 79 | unsigned long rx_over_errors; /* Frame bigger then SLIP buf. */ | ||
| 80 | #ifdef SL_INCLUDE_CSLIP | ||
| 81 | unsigned long tx_compressed; | ||
| 82 | unsigned long rx_compressed; | ||
| 83 | unsigned long tx_misses; | ||
| 84 | #endif | ||
| 85 | /* Detailed SLIP statistics. */ | ||
| 86 | |||
| 87 | int mtu; /* Our mtu (to spot changes!) */ | ||
| 88 | int buffsize; /* Max buffers sizes */ | ||
| 89 | |||
| 90 | #ifdef CONFIG_SLIP_MODE_SLIP6 | ||
| 91 | int xdata, xbits; /* 6 bit slip controls */ | ||
| 92 | #endif | ||
| 93 | |||
| 94 | unsigned long flags; /* Flag values/ mode etc */ | ||
| 95 | #define SLF_INUSE 0 /* Channel in use */ | ||
| 96 | #define SLF_ESCAPE 1 /* ESC received */ | ||
| 97 | #define SLF_ERROR 2 /* Parity, etc. error */ | ||
| 98 | #define SLF_KEEPTEST 3 /* Keepalive test flag */ | ||
| 99 | #define SLF_OUTWAIT 4 /* is outpacket was flag */ | ||
| 100 | |||
| 101 | unsigned char mode; /* SLIP mode */ | ||
| 102 | unsigned char leased; | ||
| 103 | dev_t line; | ||
| 104 | pid_t pid; | ||
| 105 | #define SL_MODE_SLIP 0 | ||
| 106 | #define SL_MODE_CSLIP 1 | ||
| 107 | #define SL_MODE_SLIP6 2 /* Matt Dillon's printable slip */ | ||
| 108 | #define SL_MODE_CSLIP6 (SL_MODE_SLIP6|SL_MODE_CSLIP) | ||
| 109 | #define SL_MODE_AX25 4 | ||
| 110 | #define SL_MODE_ADAPTIVE 8 | ||
| 111 | #ifdef CONFIG_SLIP_SMART | ||
| 112 | unsigned char outfill; /* # of sec between outfill packet */ | ||
| 113 | unsigned char keepalive; /* keepalive seconds */ | ||
| 114 | struct timer_list outfill_timer; | ||
| 115 | struct timer_list keepalive_timer; | ||
| 116 | #endif | ||
| 117 | }; | ||
| 118 | |||
| 119 | #define SLIP_MAGIC 0x5302 | ||
| 120 | |||
| 121 | #endif /* _LINUX_SLIP.H */ | ||