Requests that the data link service (DLS) provider disable promiscuous mode on a per-stream basis, at either the physical level or the service access point (SAP) level.
The message consists of one M_PROTO message block, which contains the following structure:
typedef struct
{
ulong dl_primitive;
ulong dl_level;
} dl_promiscoff_req_t;
This structure is defined in /usr/include/sys/dlpi.h.
A device in promiscuous mode lets a user view all packets, not just those destined for the user.
The DL_PROMISCOFF_REQ primitive requests that the DLS provider disable promiscuous mode on a per-stream basis, at either the physical level or the SAP level.
If the DLS user disables the promiscuous mode at the physical level, the DLS user no longer receives a copy of every packet on the wire for all SAPs.
If the DLS user disables the promiscuous mode at the SAP level, the DLS user no longer receives a copy of every packet on the wire directed to that user for all SAPs.
If the DLS user disables the promiscuous mode for all multicast addresses, the DLS user no longer receives all packets on the wire that have either a multicast or group destination address. This includes broadcast.
An application issuing the DL_PROMISCOFF_REQ primitive must have root authority. Otherwise, the DLS provider returns the DL_ERROR_ACK primitive with an error code of DL_ACCESS.
The DLS provider must not run in the interrupt environment. If it does, the system returns a DL_ERROR_ACK primitive with an error code of DL_SYSERR and an operating system error code of 0.
| Item | Description |
|---|---|
| dl_primitive | Specifies the DL_PROMISCOFF_REQ primitive. |
| dl_level | Indicates promiscuous mode at the physical or SAP level.
Possible values include:
|
| Item | Description |
|---|---|
| Valid | The primitive is valid in any state in which an acknowledgement is not pending, with the exception of DL_UNATTACH. |
| New | The resulting state is unchanged. |
| Item | Description |
|---|---|
| Successful | The DL_OK_ACK primitive is sent to the DLS user. |
| Unsuccessful | The DL_ERROR_ACK primitive is returned, and the resulting state is unchanged. |
| Item | Description |
|---|---|
| DL_ACCESS | Indicates the DLS user does not have permission to issue the primitive. |
| DL_NOTENAB | Indicates the mode is not enabled. |
| DL_NOTSUPPORTED | Indicates the primitive is known but not supported by the DLS provider. |
| 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. |
| DL_UNSUPPORTED | Indicates the DLS provider does not supply the requested level. |