sys/kern/kern_mbuf.c

100 int nmbufs;			/* limits number of mbufs */
150 	TUNABLE_INT_FETCH("kern.ipc.nmbufs", &nmbufs);
151 	if (nmbufs < nmbclusters + nmbjumbop + nmbjumbo9 + nmbjumbo16)
152 		nmbufs = lmax(maxmbufmem / MSIZE / 5,
166 		    nmbufs >= nmbclusters + nmbjumbop + nmbjumbo9 + nmbjumbo16) {
188 		    nmbufs >= nmbclusters + nmbjumbop + nmbjumbo9 + nmbjumbo16) {
209 		    nmbufs >= nmbclusters + nmbjumbop + nmbjumbo9 + nmbjumbo16) {
230 		    nmbufs >= nmbclusters + nmbjumbop + nmbjumbo9 + nmbjumbo16) {
247 	newnmbufs = nmbufs;
249 	if (error == 0 && req->newptr && newnmbufs != nmbufs) {
250 		if (newnmbufs > nmbufs) {
251 			nmbufs = newnmbufs;
252 			nmbufs = uma_zone_set_max(zone_mbuf, nmbufs);
259 SYSCTL_PROC(_kern_ipc, OID_AUTO, nmbufs, CTLTYPE_INT|CTLFLAG_RW,
260 &nmbufs, 0, sysctl_nmbufs, "IU",
310 	if (nmbufs > 0)
311 		nmbufs = uma_zone_set_max(zone_mbuf, nmbufs);
312 	uma_zone_set_warning(zone_mbuf, "kern.ipc.nmbufs limit reached");