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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | /* * 6pack.h Define the 6pack device driver interface and constants. * * NOTE: THIS FILE WILL BE MOVED TO THE LINUX INCLUDE DIRECTORY * AS SOON AS POSSIBLE! * * Version: @(#)6pack.h 0.3.0 04/07/98 * * Fixes: * * Author: Andreas Könsgen <ajk@iehk.rwth-aachen.de> * * This file is derived from slip.h, written by * Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org> */ #ifndef _LINUX_6PACK_H #define _LINUX_6PACK_H #define SIXPACK_VERSION "Revision: 0.3.0" #ifdef __KERNEL__ /* sixpack priority commands */ #define SIXP_SEOF 0x40 /* start and end of a 6pack frame */ #define SIXP_TX_URUN 0x48 /* transmit overrun */ #define SIXP_RX_ORUN 0x50 /* receive overrun */ #define SIXP_RX_BUF_OVL 0x58 /* receive buffer overflow */ #define SIXP_CHKSUM 0xFF /* valid checksum of a 6pack frame */ /* masks to get certain bits out of the status bytes sent by the TNC */ #define SIXP_CMD_MASK 0xC0 #define SIXP_CHN_MASK 0x07 #define SIXP_PRIO_CMD_MASK 0x80 #define SIXP_STD_CMD_MASK 0x40 #define SIXP_PRIO_DATA_MASK 0x38 #define SIXP_TX_MASK 0x20 #define SIXP_RX_MASK 0x10 #define SIXP_RX_DCD_MASK 0x18 #define SIXP_LEDS_ON 0x78 #define SIXP_LEDS_OFF 0x60 #define SIXP_CON 0x08 #define SIXP_STA 0x10 #define SIXP_FOUND_TNC 0xe9 #define SIXP_CON_ON 0x68 #define SIXP_DCD_MASK 0x08 #define SIXP_DAMA_OFF 0 /* default level 2 parameters */ #define SIXP_TXDELAY 25 /* in 10 ms */ #define SIXP_PERSIST 50 /* in 256ths */ #define SIXP_SLOTTIME 10 /* in 10 ms */ #define SIXP_INIT_RESYNC_TIMEOUT 150 /* in 10 ms */ #define SIXP_RESYNC_TIMEOUT 500 /* in 10 ms */ /* 6pack configuration. */ #define SIXP_NRUNIT 256 /* MAX number of 6pack channels */ #define SIXP_MTU 256 /* Default MTU */ enum sixpack_flags { SIXPF_INUSE, /* Channel in use */ SIXPF_ERROR, /* Parity, etc. error */ }; struct sixpack { int magic; /* Various fields. */ struct tty_struct *tty; /* ptr to TTY structure */ struct 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 */ unsigned char raw_buf[4]; unsigned char cooked_buf[400]; unsigned int rx_count; unsigned int rx_count_cooked; /* 6pack interface statistics. */ unsigned long rx_packets; /* inbound frames counter */ unsigned long tx_packets; /* outbound frames counter */ unsigned long rx_bytes; /* inbound bytes counter */ unsigned long tx_bytes; /* outboud bytes 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 6pack buf. */ /* Detailed 6pack statistics. */ int mtu; /* Our mtu (to spot changes!) */ int buffsize; /* Max buffers sizes */ unsigned char flags; /* Flag values/ mode etc */ unsigned char mode; /* 6pack mode */ /* 6pack stuff */ unsigned char tx_delay; unsigned char persistance; unsigned char slottime; unsigned char duplex; unsigned char led_state; unsigned char status; unsigned char status1; unsigned char status2; unsigned char tx_enable; unsigned char tnc_ok; /* unsigned char retval; */ struct timer_list tx_t; struct timer_list resync_t; }; /* struct sixpack */ /* should later be moved to include/net/ax25.h */ #define AX25_6PACK_HEADER_LEN 0 #define SIXPACK_MAGIC 0x5304 extern int sixpack_init(struct device *dev); #endif #endif /* _LINUX_6PACK.H */ |