M_XMEMD Macro for mbuf Kernel Services

Purpose

Returns the address of an mbuf cross-memory descriptor.

Syntax 

#include   <sys/mbuf.h>
#include   <sys/xmem.h>
struct mbuf * m;
M_XMEMD (m);

Parameter

Item Description
m Specifies the address of the mbuf structure in question.

Description

The M_XMEMD macro returns the address of an mbuf cross-memory descriptor.

Execution Environment

The M_XMEMD macro can be called from either the process or interrupt environment.

Example

The M_XMEMD macro can be used as in the following example:

struct mbuf   *m;
struct xmem   *xmemd;
xmemd = M_XMEMD(m);