qcacmn: Process only LMAC rings for monitor mode

Currently the timer handler, in monitor mode, is
try to process all the rings based on the mask. In
monitor mode only LMAC rings are to be processed
and the UMAC ring processing can be avoided.

Process only the LMAC rings for monitor mode.

Change-Id: Ie48722d80722350129b5c079b67ede06945f5849
CRs-Fixed: 2650480

dp/wifi3.0/dp_main.c

@@ -1538,6 +1538,75 @@ void dp_srng_access_end(struct dp_intr *int_ctx, struct dp_soc *dp_soc,
 }
 #endif /* WLAN_FEATURE_DP_EVENT_HISTORY */
 
+/**
+ * dp_process_lmac_rings() - Process LMAC rings
+ * @int_ctx: interrupt context
+ * @total_budget: budget of work which can be done
+ *
+ * Return: work done
+ */
+static int dp_process_lmac_rings(struct dp_intr *int_ctx, int total_budget)
+{
+	struct dp_intr_stats *intr_stats = &int_ctx->intr_stats;
+	struct dp_soc *soc = int_ctx->soc;
+	uint32_t remaining_quota = total_budget;
+	struct dp_pdev *pdev = NULL;
+	uint32_t work_done  = 0;
+	int budget = total_budget;
+	int ring = 0;
+
+	/* Process LMAC interrupts */
+	for  (ring = 0 ; ring < MAX_NUM_LMAC_HW; ring++) {
+		int mac_for_pdev = ring;
+
+		pdev = dp_get_pdev_for_lmac_id(soc, mac_for_pdev);
+		if (!pdev)
+			continue;
+		if (int_ctx->rx_mon_ring_mask & (1 << mac_for_pdev)) {
+			work_done = dp_mon_process(soc, mac_for_pdev,
+						   remaining_quota);
+			if (work_done)
+				intr_stats->num_rx_mon_ring_masks++;
+			budget -= work_done;
+			if (budget <= 0)
+				goto budget_done;
+			remaining_quota = budget;
+		}
+
+		if (int_ctx->rxdma2host_ring_mask &
+				(1 << mac_for_pdev)) {
+			work_done = dp_rxdma_err_process(int_ctx, soc,
+							 mac_for_pdev,
+							 remaining_quota);
+			if (work_done)
+				intr_stats->num_rxdma2host_ring_masks++;
+			budget -=  work_done;
+			if (budget <= 0)
+				goto budget_done;
+			remaining_quota = budget;
+		}
+
+		if (int_ctx->host2rxdma_ring_mask &
+					(1 << mac_for_pdev)) {
+			union dp_rx_desc_list_elem_t *desc_list = NULL;
+			union dp_rx_desc_list_elem_t *tail = NULL;
+			struct dp_srng *rx_refill_buf_ring =
+				&soc->rx_refill_buf_ring[mac_for_pdev];
+
+			intr_stats->num_host2rxdma_ring_masks++;
+			DP_STATS_INC(pdev, replenish.low_thresh_intrs,
+				     1);
+			dp_rx_buffers_replenish(soc, mac_for_pdev,
+						rx_refill_buf_ring,
+						&soc->rx_desc_buf[mac_for_pdev],
+						0, &desc_list, &tail);
+		}
+	}
+
+budget_done:
+	return total_budget - budget;
+}
+
 /*
  * dp_service_srngs() - Top level interrupt handler for DP Ring interrupts
  * @dp_ctx: DP SOC handle
@@ -1559,7 +1628,6 @@ static uint32_t dp_service_srngs(void *dp_ctx, uint32_t dp_budget)
 	uint8_t rx_wbm_rel_mask = int_ctx->rx_wbm_rel_ring_mask;
 	uint8_t reo_status_mask = int_ctx->reo_status_ring_mask;
 	uint32_t remaining_quota = dp_budget;
-	struct dp_pdev *pdev = NULL;
 
 	dp_verbose_debug("tx %x rx %x rx_err %x rx_wbm_rel %x reo_status %x rx_mon_ring %x host2rxdma %x rxdma2host %x\n",
 			 tx_mask, rx_mask, rx_err_mask, rx_wbm_rel_mask,
@@ -1658,53 +1726,12 @@ static uint32_t dp_service_srngs(void *dp_ctx, uint32_t dp_budget)
 			int_ctx->intr_stats.num_reo_status_ring_masks++;
 	}
 
-	/* Process LMAC interrupts */
-	for  (ring = 0 ; ring < MAX_NUM_LMAC_HW; ring++) {
-		int mac_for_pdev = ring;
-
-		pdev = dp_get_pdev_for_lmac_id(soc, mac_for_pdev);
-		if (!pdev)
-			continue;
-		if (int_ctx->rx_mon_ring_mask & (1 << mac_for_pdev)) {
-			work_done = dp_mon_process(soc, mac_for_pdev,
-						   remaining_quota);
-			if (work_done)
-				intr_stats->num_rx_mon_ring_masks++;
-			budget -= work_done;
-			if (budget <= 0)
-				goto budget_done;
-			remaining_quota = budget;
-		}
-
-		if (int_ctx->rxdma2host_ring_mask &
-				(1 << mac_for_pdev)) {
-			work_done = dp_rxdma_err_process(int_ctx, soc,
-							 mac_for_pdev,
-							 remaining_quota);
-			if (work_done)
-				intr_stats->num_rxdma2host_ring_masks++;
-			budget -=  work_done;
-			if (budget <= 0)
-				goto budget_done;
-			remaining_quota = budget;
-		}
-
-		if (int_ctx->host2rxdma_ring_mask &
-					(1 << mac_for_pdev)) {
-			union dp_rx_desc_list_elem_t *desc_list = NULL;
-			union dp_rx_desc_list_elem_t *tail = NULL;
-			struct dp_srng *rx_refill_buf_ring =
-				&soc->rx_refill_buf_ring[mac_for_pdev];
-
-			intr_stats->num_host2rxdma_ring_masks++;
-			DP_STATS_INC(pdev, replenish.low_thresh_intrs,
-				     1);
-			dp_rx_buffers_replenish(soc, mac_for_pdev,
-						rx_refill_buf_ring,
-						&soc->rx_desc_buf[mac_for_pdev],
-						0, &desc_list, &tail);
-
-		}
+	work_done = dp_process_lmac_rings(int_ctx, remaining_quota);
+	if (work_done) {
+		budget -=  work_done;
+		if (budget <= 0)
+			goto budget_done;
+		remaining_quota = budget;
 	}
 
 	qdf_lro_flush(int_ctx->lro_ctx);
@@ -1726,13 +1753,15 @@ static void dp_interrupt_timer(void *arg)
 	struct dp_soc *soc = (struct dp_soc *) arg;
 	int i;
 
-	if (qdf_atomic_read(&soc->cmn_init_done)) {
-		for (i = 0;
-			i < wlan_cfg_get_num_contexts(soc->wlan_cfg_ctx); i++)
-			dp_service_srngs(&soc->intr_ctx[i], 0xffff);
+	if (!qdf_atomic_read(&soc->cmn_init_done))
+		return;
 
-		qdf_timer_mod(&soc->int_timer, DP_INTR_POLL_TIMER_MS);
+	for (i = 0; i < wlan_cfg_get_num_contexts(soc->wlan_cfg_ctx); i++) {
+		if (soc->intr_ctx[i].rx_mon_ring_mask)
+			dp_process_lmac_rings(&soc->intr_ctx[i], 0xffff);
 	}
+
+	qdf_timer_mod(&soc->int_timer, DP_INTR_POLL_TIMER_MS);
 }
 
 /*