Function

mbuf_mclget

Declaration

errno_t mbuf_mclget(mbuf_how_t how, mbuf_type_t type, mbuf_t *mbuf);

Parameters

how

Blocking or non-blocking.

type

The type of the mbuf.

mbuf

The mbuf the cluster will be attached to.

Return Value

0 on success, errno error on failure. If you specified NULL for the mbuf, any intermediate mbuf that may have been allocated will be freed. If you specify an mbuf value in *mbuf, mbuf_mclget will not free it.

Discussion

Allocate a cluster and attach it to an mbuf for use as external data. If mbuf points to a NULL mbuf_t, an mbuf will be allocated for you. If mbuf points to a non-NULL mbuf_t, mbuf_mclget may return a different mbuf_t than the one you passed in.