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
| Item |
Description |
|---|
| 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
| Item |
Description |
|---|
| flags |
Notification to the API that the associated field has been
used. |
| data_len |
Length of data. |
| data |
Pointer to actual data. |