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Technical Reference: Communications, Volume 1
DL_SUBS_UNBIND_REQ Primitive
Purpose
Requests that the data link service (DLS) provider
unbind the data link service access point (DLSAP) that was bound by a previous DL_SUBS_BIND_REQ primitive from this stream.
Structure
The message consists of one M_PROTO message block, which contains the following structure:
typedef struct
{
ulong dl_primitive;
ulong dl_subs_sap_length;
ulong dl_subs_sap_offset;
} dl_subs_unbind_req_t;
This structure is defined in /usr/include/sys/dlpi.h.
Description
The DL_SUBS_UNBIND_REQ primitive
requests that the DLS provider unbind the DLSAP that was bound by a previous DL_SUBS_BIND_REQ primitive from this stream.
Parameters
dl_primitive |
Specifies the DL_SUBS_UNBIND_REQ primitive. |
dl_subs_sap_length |
Specifies the length of the specified DLSAP. |
dl_subs_sap_offset |
Indicates where the DLSAP begins. The value of this parameter is
the offset from the beginning of the M_PROTO message
block. |
States
Valid |
The primitive is valid in the DL_IDLE state. |
New |
The resulting state is DL_SUBS_UNBIND_PND. |
Acknowledgments
Successful |
The DL_OK_ACK primitive is sent to the DLS
user. The resulting state is DL_IDLE. |
Unsuccessful |
The DL_ERROR_ACK primitive is returned, and
the resulting state is unchanged. |
Error Codes
DL_BADADDR |
Indicates the DLSAP address information is invalid or is in an incorrect
format. |
DL_OUTSTATE |
Indicates the primitive was issued from an invalid state. |
DL_SYSERR |
Indicates a system error occurred. The system error is indicated
in the DL_ERROR_ACK primitive. |
Related Information
The DL_OK_ACK primitive, DL_ERROR_ACK primitive, DL_SUBS_BIND_REQ primitive.
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