/*
* this has been broken out into a separate routine that
* can be called from the x86 early vm initialization to
* determine how much lo memory to reserve on systems with
* DMA hardware that can't fully address all of the physical
* memory that is present.
*/
unsigned int
bsd_mbuf_cluster_reserve(boolean_t *overridden)
{
int mbuf_pool = 0;
static boolean_t was_overridden = FALSE;
/* If called more than once, return the previously calculated size */
if (mbuf_poolsz != 0)
goto done;
/*
* Some of these are parsed in parse_bsd_args(), but for x86 we get
* here early from i386_vm_init() and so we parse them now, in order
* to correctly compute the size of the low-memory VM pool. It is
* redundant but rather harmless.
*/
(void) PE_parse_boot_argn("ncl", &ncl, sizeof (ncl));
(void) PE_parse_boot_argn("mbuf_pool", &mbuf_pool, sizeof (mbuf_pool));
/*
* Convert "mbuf_pool" from MB to # of 2KB clusters; it is
* equivalent to "ncl", except that it uses different unit.
*/
if (mbuf_pool != 0)
ncl = (mbuf_pool << MBSHIFT) >> MCLSHIFT;
if (sane_size > (64 * 1024 * 1024) || ncl != 0) {
if (ncl || serverperfmode)
was_overridden = TRUE;
if ((nmbclusters = ncl) == 0) {
/* Auto-configure the mbuf pool size */
nmbclusters = mbuf_default_ncl(serverperfmode, sane_size);
} else {
/* Make sure it's not odd in case ncl is manually set */
if (nmbclusters & 0x1)
--nmbclusters;
/* And obey the upper limit */
if (nmbclusters > MAX_NCL)
nmbclusters = MAX_NCL;
}
/* Round it down to nearest multiple of 4KB clusters */
nmbclusters = P2ROUNDDOWN(nmbclusters, NCLPBG);
}
mbuf_poolsz = nmbclusters << MCLSHIFT;
done:
if (overridden)
*overridden = was_overridden;
return (mbuf_poolsz);
}
/*
* this has been broken out into a separate routine that
* can be called from the x86 early vm initialization to
* determine how much lo memory to reserve on systems with
* DMA hardware that can't fully address all of the physical
* memory that is present.
*/
unsigned int
bsd_mbuf_cluster_reserve(void)
{
int mbuf_pool = 0;
/* If called more than once, return the previously calculated size */
if (mbuf_poolsz != 0)
goto done;
/*
* Some of these are parsed in parse_bsd_args(), but for x86 we get
* here early from i386_vm_init() and so we parse them now, in order
* to correctly compute the size of the low-memory VM pool. It is
* redundant but rather harmless.
*/
//(void) PE_parse_boot_argn("srv", &srv, sizeof (srv));
(void) PE_parse_boot_argn("ncl", &ncl, sizeof (ncl));
(void) PE_parse_boot_argn("mbuf_pool", &mbuf_pool, sizeof (mbuf_pool));
/*
* Convert "mbuf_pool" from MB to # of 2KB clusters; it is
* equivalent to "ncl", except that it uses different unit.
*/
if (mbuf_pool != 0)
ncl = (mbuf_pool << MBSHIFT) >> MCLSHIFT;
if (sane_size > (64 * 1024 * 1024) || ncl != 0) {
if ((nmbclusters = ncl) == 0) {
/* Auto-configure the mbuf pool size */
nmbclusters = mbuf_default_ncl(srv, sane_size);
} else {
/* Make sure it's not odd in case ncl is manually set */
if (nmbclusters & 0x1)
--nmbclusters;
/* And obey the upper limit */
if (nmbclusters > MAX_NCL)
nmbclusters = MAX_NCL;
}
}
mbuf_poolsz = nmbclusters << MCLSHIFT;
done:
return (mbuf_poolsz);
}
