Files Reference

cb_data_struct Structure for X.25

Purpose

Used by the x25_send and x25_receive subroutines to pass data control information.

Syntax

#define X25FLG_D_BIT 0x00000001
#define X25FLG_Q_BIT 0x00000002
#define X25FLG_M_BIT 0x00000004
#define X25FLG_DATA  0x00000008


struct cb_data_struct
{
  unsigned long flags;
  int data_len;
  unsigned char *data;
} ;

Flags

X25FLG_D_BIT	If the D-bit has been set in the call packet, and the value is not zero, the remote data terminal equipment (DTE) must acknowledge the packet.
X25FLG_Q_BIT	Sets the Q-bit in the packet. A nonzero value is converted to a single 1-bit in the packet.
X25FLG_M_BIT	Sets the M-bit in the packet. A nonzero value is converted to a single 1-bit in the packet.
X25_FLG_DATA	Indicates that the `data` field is used.

Fields

`flags`	Notification to the API that the associated field has been used.
`data_len`	Length of data.
`data`	Pointer to actual data.

Related Information

The x25sdefs.h file.

The cb_call_struct structure.