net/ipv4/igmp.c

305 		if (gdeleted || !psf->sf_crcount)
310 			return gdeleted || (psf->sf_crcount && sdeleted);
311 		return psf->sf_crcount && !gdeleted && !sdeleted;
522 		     type == IGMPV3_BLOCK_OLD_SOURCES) && psf->sf_crcount)
551 		     type == IGMPV3_BLOCK_OLD_SOURCES) && psf->sf_crcount) {
553 			psf->sf_crcount--;
554 			if ((sdeleted || gdeleted) && psf->sf_crcount == 0) {
635 		if (psf->sf_crcount == 0) {
1204 			psf->sf_crcount = pmc->crcount;
1246 				psf->sf_crcount = in_dev->mr_qrv ?:
1897 			psf->sf_crcount = in_dev->mr_qrv ?: READ_ONCE(net->ipv4.sysctl_igmp_qrv);
1964 			psf->sf_crcount = 0;
2051 				psf->sf_crcount = qrv;
2056 			psf->sf_crcount = 0;
2073 			dpsf->sf_crcount = qrv;
2143 			psf->sf_crcount = 0;