예제 #1
0
/*
 * m_getjcl() returns an mbuf with a cluster of the specified size attached.
 * For size it takes MCLBYTES, MJUMPAGESIZE, MJUM9BYTES, MJUM16BYTES.
 */
struct mbuf *
m_getjcl(int how, short type, int flags, int size)
{
	struct mb_args args;
	struct mbuf *m, *n;
	uma_zone_t zone;

	if (size == MCLBYTES)
		return m_getcl(how, type, flags);

	args.flags = flags;
	args.type = type;

	m = uma_zalloc_arg(zone_mbuf, &args, how);
	if (m == NULL)
		return (NULL);

	zone = m_getzone(size);
	n = uma_zalloc_arg(zone, m, how);
	if (n == NULL) {
		uma_zfree(zone_mbuf, m);
		return (NULL);
	}
	return (m);
}
예제 #2
0
/*
 * The Mbuf Cluster zone destructor.
 */
static void
mb_dtor_clust(void *mem, int size, void *arg)
{
#ifdef INVARIANTS
	uma_zone_t zone;

	zone = m_getzone(size);
	KASSERT(*(uma_find_refcnt(zone, mem)) <= 1,
		("%s: refcnt incorrect %u", __func__,
		 *(uma_find_refcnt(zone, mem))) );

	trash_dtor(mem, size, arg);
#endif
}
예제 #3
0
/*
 * m_cljget() is different from m_clget() as it can allocate clusters without
 * attaching them to an mbuf.  In that case the return value is the pointer
 * to the cluster of the requested size.  If an mbuf was specified, it gets
 * the cluster attached to it and the return value can be safely ignored.
 * For size it takes MCLBYTES, MJUMPAGESIZE, MJUM9BYTES, MJUM16BYTES.
 */
void *
m_cljget(struct mbuf *m, int how, int size)
{
	uma_zone_t zone;

	if (m != NULL) {
		KASSERT((m->m_flags & M_EXT) == 0, ("%s: mbuf %p has M_EXT",
		    __func__, m));
		m->m_ext.ext_buf = NULL;
	}

	zone = m_getzone(size);
	return (uma_zalloc_arg(zone, m, how));
}
예제 #4
0
/*
 * m_cljget() is different from m_clget() as it can allocate clusters without
 * attaching them to an mbuf.  In that case the return value is the pointer
 * to the cluster of the requested size.  If an mbuf was specified, it gets
 * the cluster attached to it and the return value can be safely ignored.
 * For size it takes MCLBYTES, MJUMPAGESIZE, MJUM9BYTES, MJUM16BYTES.
 */
void *
m_cljget(struct mbuf *m, int how, int size)
{
	uma_zone_t zone;
	void *retval;

	if (m != NULL) {
		KASSERT((m->m_flags & M_EXT) == 0, ("%s: mbuf %p has M_EXT",
		    __func__, m));
		m->m_ext.ext_buf = NULL;
	}

	zone = m_getzone(size);
	retval = uma_zalloc_arg(zone, m, how);

	MBUF_PROBE4(m__cljget, m, how, size, retval);

	return (retval);
}