2.9BSD - /usr/include/sys/pk.h

   1: /*
   2:  * six-byte packet header for asynch lines.
   3:  * headers for other devices take up the same
   4:  * or less space.  If this changes the header
   5:  * struct will have to become a union.
   6:  */
   7: struct  header {
   8:     char    sync;       /* sync byte */
   9:     char    ksize;      /* encoded packet size */
  10:     u_short sum;        /* block check of data packet */
  11:     char    cntl;       /* control byte */
  12:     char    ccntl;      /* block check of header */
  13: };
  14: #define HDRSIZ  6
  15: 
  16: /*
  17:  * Control structure for a packet driver connection.
  18:  */
  19: struct  pack {
  20:     short   p_state;    /* line state */
  21:     short   p_bits;     /* mask for getepack */
  22:     short   p_rsize;    /* input packet size */
  23:     short   p_xsize;    /* output packet size */
  24:     struct  header p_ihbuf; /* input header */
  25:     struct  header p_ohbuf; /* output header */
  26:     char    *p_rptr;
  27:     char    p_mode;
  28:     char    **p_ipool;  /* head link to input buffer pool */
  29:     char    **p_io;     /* input buffer given to driver */
  30:     char    p_xcount;   /* # active output buffers */
  31:     char    p_rcount;
  32:     char    p_nout, p_tout;
  33:     char    p_lpsize;   /* log(psize/32) */
  34:     char    p_timer;
  35:     char    p_obusy;
  36:     char    p_srxmit;
  37:     char    p_rwindow;  /* window size */
  38:     char    p_swindow;
  39:     char    p_msg;      /* control msg */
  40:     char    p_rmsg;     /* repeated control msg */
  41:     char    p_ps, p_pr; /* last packet sent, recv'd */
  42:     char    p_rpr;      /* copy of remote pr */
  43:     char    p_nxtps;    /* next output seq number */
  44:     char    p_imap;     /* bit map of input buffers */
  45:     char    p_pscopy;   /* newest output packet */
  46:     char    *p_ob[8];   /* output buffers */
  47:     char    *p_ib[8];   /* input buffers */
  48:     char    p_os[8];    /* output buffer status */
  49:     char    p_is[8];    /* input buffer status */
  50:     short   p_osum[8];  /* output checksums */
  51:     short   p_isum[8];  /* input checksums */
  52:     DSYSTEM;
  53: };
  54: #define CHECK   0125252
  55: #define SYN 020
  56: #define MOD8    7
  57: #define NOTCNTL(a)  (a & 0300)
  58: #ifndef MIN
  59: #define MIN(a,b)    (((a)<(b))? (a):(b))
  60: #endif
  61: 
  62: char    next[8];
  63: char    mask[8];
  64: short   npbits;
  65: short   pkactive;
  66: short   pkzot;
  67: short   pkdisc;
  68: 
  69: /*
  70:  * driver state
  71:  */
  72: #define DEAD    0
  73: #define INITa   1
  74: #define INITb   2
  75: #define INITab  3
  76: #define LIVE    010
  77: #define RXMIT   020
  78: #define RREJ    040
  79: #define PDEBUG  0200
  80: #define DRAINO  0400
  81: #define WAITO   01000
  82: #define DOWN    02000
  83: #define RCLOSE  04000
  84: #define BADFRAME 020000
  85: 
  86: /*
  87:  * modes
  88:  */
  89: #define SLOWMODE    0100
  90: /*
  91:  * io buffer states
  92:  */
  93: #define B_NULL  0
  94: #define B_READY 1
  95: #define B_SENT  2
  96: #define B_RESID 010
  97: #define B_COPY  020
  98: #define B_MARK  040
  99: #define B_SHORT 0100
 100: 
 101: /*
 102:  * control messages
 103:  */
 104: #define CLOSE   1
 105: #define RJ  2
 106: #define SRJ 3
 107: #define RR  4
 108: #define INITC   5
 109: #define INITB   6
 110: #define INITA   7
 111: 
 112: #define M_RJ    4
 113: #define M_SRJ   010
 114: #define M_RR    020
 115: #define M_INITC 040
 116: #define M_CLOSE 2
 117: #define M_INITA 0200
 118: #define M_INITB 0100
 119: 
 120: 
 121: 
 122: #define PKOPRI  31
 123: #define PKIPRI  30
 124: 
 125: #define NPLINES 8
 126: 
 127: /*
 128:  * packet ioctl buf
 129:  */
 130: struct  piocb {
 131:     u_short t;
 132:     short   psize;
 133:     short   mode;
 134:     short   state;
 135:     char    window;
 136: };
 137: 
 138: short   pkdebug;
 139: short   pksizes[];
 140: 
 141: #define Pwrite  1
 142: #define Poutput 1
 143: #define Pxint   1
 144: 
 145: 
 146: #define Print   01
 147: #define Prend   01
 148: #define Pacc    01
 149: #define Pread   01
 150: 
 151: short   *PTRACE;
 152: 
 153: 
 154: #define ISCNTL(a) ((a & 0300) == 0)

Defined variables

Defined struct's

Defined macros