Thread (26 messages) 26 messages, 5 authors, 2013-12-21

[net-next v3 01/16] i40e: using for_each_set_bit to simplify the code

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From: Jeff Kirsher <hidden>
Date: 2013-12-20 18:22:01
Subsystem: intel ethernet drivers, networking drivers, the rest · Maintainers: Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

Revision v3 of 227 in this series.

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From: Wei Yongjun <redacted>

Using for_each_set_bit() to simplify the code.

Signed-off-by: Wei Yongjun <redacted>
Signed-off-by: Jeff Kirsher <redacted>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 64 ++++------------------
 1 file changed, 12 insertions(+), 52 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 68e1f8e..1ea0886 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -260,23 +260,17 @@ static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_idx,
 		goto irq_list_done;
 	}
 	tempmap = vecmap->rxq_map;
-	vsi_queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-	while (vsi_queue_id < I40E_MAX_VSI_QP) {
+	for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
 		linklistmap |= (1 <<
 				(I40E_VIRTCHNL_SUPPORTED_QTYPES *
 				 vsi_queue_id));
-		vsi_queue_id =
-		    find_next_bit(&tempmap, I40E_MAX_VSI_QP, vsi_queue_id + 1);
 	}
 
 	tempmap = vecmap->txq_map;
-	vsi_queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-	while (vsi_queue_id < I40E_MAX_VSI_QP) {
+	for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
 		linklistmap |= (1 <<
 				(I40E_VIRTCHNL_SUPPORTED_QTYPES * vsi_queue_id
 				 + 1));
-		vsi_queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-					     vsi_queue_id + 1);
 	}
 
 	next_q = find_first_bit(&linklistmap,
@@ -1293,27 +1287,21 @@ static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
 
 		/* lookout for the invalid queue index */
 		tempmap = map->rxq_map;
-		vsi_queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-		while (vsi_queue_id < I40E_MAX_VSI_QP) {
+		for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
 			if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
 						      vsi_queue_id)) {
 				aq_ret = I40E_ERR_PARAM;
 				goto error_param;
 			}
-			vsi_queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-						     vsi_queue_id + 1);
 		}
 
 		tempmap = map->txq_map;
-		vsi_queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-		while (vsi_queue_id < I40E_MAX_VSI_QP) {
+		for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
 			if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
 						      vsi_queue_id)) {
 				aq_ret = I40E_ERR_PARAM;
 				goto error_param;
 			}
-			vsi_queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-						     vsi_queue_id + 1);
 		}
 
 		i40e_config_irq_link_list(vf, vsi_id, map);
@@ -1358,31 +1346,23 @@ static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
 	}
 
 	tempmap = vqs->rx_queues;
-	queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-	while (queue_id < I40E_MAX_VSI_QP) {
+	for_each_set_bit(queue_id, &tempmap, I40E_MAX_VSI_QP) {
 		if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id)) {
 			aq_ret = I40E_ERR_PARAM;
 			goto error_param;
 		}
 		i40e_ctrl_vsi_rx_queue(vf, vsi_id, queue_id,
 				       I40E_QUEUE_CTRL_ENABLE);
-
-		queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-					 queue_id + 1);
 	}
 
 	tempmap = vqs->tx_queues;
-	queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-	while (queue_id < I40E_MAX_VSI_QP) {
+	for_each_set_bit(queue_id, &tempmap, I40E_MAX_VSI_QP) {
 		if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id)) {
 			aq_ret = I40E_ERR_PARAM;
 			goto error_param;
 		}
 		i40e_ctrl_vsi_tx_queue(vf, vsi_id, queue_id,
 				       I40E_QUEUE_CTRL_ENABLE);
-
-		queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-					 queue_id + 1);
 	}
 
 	/* Poll the status register to make sure that the
@@ -1391,29 +1371,23 @@ static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
 	udelay(10);
 
 	tempmap = vqs->rx_queues;
-	queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-	while (queue_id < I40E_MAX_VSI_QP) {
+	for_each_set_bit(queue_id, &tempmap, I40E_MAX_VSI_QP) {
 		if (i40e_ctrl_vsi_rx_queue(vf, vsi_id, queue_id,
 					   I40E_QUEUE_CTRL_ENABLECHECK)) {
 			dev_err(&pf->pdev->dev,
 				"Queue control check failed on RX queue %d of VSI %d VF %d\n",
 				queue_id, vsi_id, vf->vf_id);
 		}
-		queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-					 queue_id + 1);
 	}
 
 	tempmap = vqs->tx_queues;
-	queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-	while (queue_id < I40E_MAX_VSI_QP) {
+	for_each_set_bit(queue_id, &tempmap, I40E_MAX_VSI_QP) {
 		if (i40e_ctrl_vsi_tx_queue(vf, vsi_id, queue_id,
 					   I40E_QUEUE_CTRL_ENABLECHECK)) {
 			dev_err(&pf->pdev->dev,
 				"Queue control check failed on TX queue %d of VSI %d VF %d\n",
 				queue_id, vsi_id, vf->vf_id);
 		}
-		queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-					 queue_id + 1);
 	}
 
 error_param:
@@ -1457,31 +1431,23 @@ static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
 	}
 
 	tempmap = vqs->rx_queues;
-	queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-	while (queue_id < I40E_MAX_VSI_QP) {
+	for_each_set_bit(queue_id, &tempmap, I40E_MAX_VSI_QP) {
 		if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id)) {
 			aq_ret = I40E_ERR_PARAM;
 			goto error_param;
 		}
 		i40e_ctrl_vsi_rx_queue(vf, vsi_id, queue_id,
 				       I40E_QUEUE_CTRL_DISABLE);
-
-		queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-					 queue_id + 1);
 	}
 
 	tempmap = vqs->tx_queues;
-	queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-	while (queue_id < I40E_MAX_VSI_QP) {
+	for_each_set_bit(queue_id, &tempmap, I40E_MAX_VSI_QP) {
 		if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id)) {
 			aq_ret = I40E_ERR_PARAM;
 			goto error_param;
 		}
 		i40e_ctrl_vsi_tx_queue(vf, vsi_id, queue_id,
 				       I40E_QUEUE_CTRL_DISABLE);
-
-		queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-					 queue_id + 1);
 	}
 
 	/* Poll the status register to make sure that the
@@ -1490,29 +1456,23 @@ static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
 	udelay(10);
 
 	tempmap = vqs->rx_queues;
-	queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-	while (queue_id < I40E_MAX_VSI_QP) {
+	for_each_set_bit(queue_id, &tempmap, I40E_MAX_VSI_QP) {
 		if (i40e_ctrl_vsi_rx_queue(vf, vsi_id, queue_id,
 					   I40E_QUEUE_CTRL_DISABLECHECK)) {
 			dev_err(&pf->pdev->dev,
 				"Queue control check failed on RX queue %d of VSI %d VF %d\n",
 				queue_id, vsi_id, vf->vf_id);
 		}
-		queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-					 queue_id + 1);
 	}
 
 	tempmap = vqs->tx_queues;
-	queue_id = find_first_bit(&tempmap, I40E_MAX_VSI_QP);
-	while (queue_id < I40E_MAX_VSI_QP) {
+	for_each_set_bit(queue_id, &tempmap, I40E_MAX_VSI_QP) {
 		if (i40e_ctrl_vsi_tx_queue(vf, vsi_id, queue_id,
 					   I40E_QUEUE_CTRL_DISABLECHECK)) {
 			dev_err(&pf->pdev->dev,
 				"Queue control check failed on TX queue %d of VSI %d VF %d\n",
 				queue_id, vsi_id, vf->vf_id);
 		}
-		queue_id = find_next_bit(&tempmap, I40E_MAX_VSI_QP,
-					 queue_id + 1);
 	}
 
 error_param:
-- 
1.8.3.1
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