C++ (Cpp) AC_BITMAP_TST Examples

Example #1

File: dhd_common.c Project: 119-org/hi3518-osdrv

bool dhd_prec_enq(dhd_pub_t *dhdp, struct pktq *q, struct sk_buff *pkt,
		  int prec)
{
	struct sk_buff *p;
	int eprec = -1;		/* precedence to evict from */
	bool discard_oldest;

	/* Fast case, precedence queue is not full and we are also not
	 * exceeding total queue length
	 */
	if (!pktq_pfull(q, prec) && !pktq_full(q)) {
		bcm_pktq_penq(q, prec, pkt);
		return true;
	}

	/* Determine precedence from which to evict packet, if any */
	if (pktq_pfull(q, prec))
		eprec = prec;
	else if (pktq_full(q)) {
		p = bcm_pktq_peek_tail(q, &eprec);
		ASSERT(p);
		if (eprec > prec)
			return false;
	}

	/* Evict if needed */
	if (eprec >= 0) {
		/* Detect queueing to unconfigured precedence */
		ASSERT(!pktq_pempty(q, eprec));
		discard_oldest = AC_BITMAP_TST(dhdp->wme_dp, eprec);
		if (eprec == prec && !discard_oldest)
			return false;	/* refuse newer (incoming) packet */
		/* Evict packet according to discard policy */
		p = discard_oldest ? bcm_pktq_pdeq(q, eprec) :
			bcm_pktq_pdeq_tail(q, eprec);
		if (p == NULL) {
			DHD_ERROR(("%s: bcm_pktq_penq() failed, oldest %d.",
				   __func__, discard_oldest));
			ASSERT(p);
		}

		bcm_pkt_buf_free_skb(p);
	}

	/* Enqueue */
	p = bcm_pktq_penq(q, prec, pkt);
	if (p == NULL) {
		DHD_ERROR(("%s: bcm_pktq_penq() failed.", __func__));
		ASSERT(p);
	}

	return true;
}

Example #2

File: dhd_common.c Project: EddyKuo/linux-sdk-kernel-source

bool
dhd_prec_enq(dhd_pub_t *dhdp, struct pktq *q, void *pkt, int prec)
{
	void *p;
	int eprec = -1;		/* precedence to evict from */
	bool discard_oldest;

	/* Fast case, precedence queue is not full and we are also not
	 * exceeding total queue length
	 */
	if (!pktq_pfull(q, prec) && !pktq_full(q)) {
		pktq_penq(q, prec, pkt);
		return TRUE;
	}

	/* Determine precedence from which to evict packet, if any */
	if (pktq_pfull(q, prec))
		eprec = prec;
	else if (pktq_full(q)) {
		p = pktq_peek_tail(q, &eprec);
		ASSERT(p);
		if (eprec > prec)
			return FALSE;
	}

	/* Evict if needed */
	if (eprec >= 0) {
		/* Detect queueing to unconfigured precedence */
		ASSERT(!pktq_pempty(q, eprec));
		discard_oldest = AC_BITMAP_TST(dhdp->wme_dp, eprec);
		if (eprec == prec && !discard_oldest)
			return FALSE;		/* refuse newer (incoming) packet */
		/* Evict packet according to discard policy */
		p = discard_oldest ? pktq_pdeq(q, eprec) : pktq_pdeq_tail(q, eprec);
		ASSERT(p);

		PKTFREE(dhdp->osh, p, TRUE);
	}

	/* Enqueue */
	p = pktq_penq(q, prec, pkt);
	ASSERT(p);

	return TRUE;
}