MACIOC_SETMCA(7mdi)

MACIOC_SETMCA -- MDI receive MAC frames ioctl

Description

This ioctl requests that the MDI driver begin receiving frames sent to the requested MAC address in addition to the default address, broadcast address and existing multicast addresses. The driver will continue to receive frames on this MAC address until either a MACIOC_DELMCA ioctl request for this MAC address is received or the MDI device is closed.

Parameters

The ioctl Data contains the MAC address to be added to the MDI driver's multicast address table.

Data returned

The ioctl data must be returned in the mp->b_cont portion of the message on either success (M_IOCACK) or failure (M_IOCNACK); this portion of the message cannot be freed by the driver.

The MDI driver should fail the ioctl if the MAC address is not a legal multicast address for that media type. If the MAC address is already in the table, the MDI driver must return success, but should not add a duplicate of the address to the multicast address table.

Version applicability

mdi: 1, 2, 2.1

References

Intro(7mdi), MACIOC_DELMCA(7mdi)

``MDI ioctls'' in HDK Technical Reference