mbuf_datastart

Declaration

void * mbuf_datastart(mbuf_t mbuf);

Parameters

• mbuf:

  The mbuf.

Return Value

A pointer to smallest possible value for data.

Discussion

Returns the start of the space set aside for storing data in an mbuf. An mbuf's data may come from a cluster or be embedded in the mbuf structure itself. The data pointer retrieved by mbuf_data may not be at the start of the data (mbuf_leadingspace will be non-zero). This function will return a pointer that matches mbuf_data() - mbuf_leadingspace().