From: Intiyaz Basha <intiyaz.basha@cavium.com>
Date: Mon, 26 Mar 2018 20:40:27 +0000 (-0700)
Subject: liquidio: Removed duplicate Tx queue status check
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=4171ec060073e1789cb868f43585983c69ff767b;p=openwrt%2Fstaging%2Fblogic.git

liquidio: Removed duplicate Tx queue status check

Napi is checking Tx queue status and waking the Tx queue if required.
Same operation is being done while freeing every Tx buffer.
So removed the duplicate operation of checking Tx queue status from the Tx
buffer free functions.

Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 58b5c75fd2ee..43c5ba0af12b 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -1634,28 +1634,6 @@ static int octeon_pci_os_setup(struct octeon_device *oct)
 	return 0;
 }
 
-/**
- * \brief Check Tx queue state for a given network buffer
- * @param lio per-network private data
- * @param skb network buffer
- */
-static inline int check_txq_state(struct lio *lio, struct sk_buff *skb)
-{
-	int q, iq;
-
-	q = skb->queue_mapping;
-	iq = lio->linfo.txpciq[(q % lio->oct_dev->num_iqs)].s.q_no;
-
-	if (octnet_iq_is_full(lio->oct_dev, iq))
-		return 0;
-
-	if (__netif_subqueue_stopped(lio->netdev, q)) {
-		INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, iq, tx_restart, 1);
-		netif_wake_subqueue(lio->netdev, q);
-	}
-	return 1;
-}
-
 /**
  * \brief Unmap and free network buffer
  * @param buf buffer
@@ -1673,8 +1651,6 @@ static void free_netbuf(void *buf)
 	dma_unmap_single(&lio->oct_dev->pci_dev->dev, finfo->dptr, skb->len,
 			 DMA_TO_DEVICE);
 
-	check_txq_state(lio, skb);
-
 	tx_buffer_free(skb);
 }
 
@@ -1715,8 +1691,6 @@ static void free_netsgbuf(void *buf)
 	list_add_tail(&g->list, &lio->glist[iq]);
 	spin_unlock(&lio->glist_lock[iq]);
 
-	check_txq_state(lio, skb);     /* mq support: sub-queue state check */
-
 	tx_buffer_free(skb);
 }
 
@@ -1762,8 +1736,6 @@ static void free_netsgbuf_with_resp(void *buf)
 	spin_unlock(&lio->glist_lock[iq]);
 
 	/* Don't free the skb yet */
-
-	check_txq_state(lio, skb);
 }
 
 /**
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
index d5f5c9a693ee..dc62698bdaf7 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
@@ -953,29 +953,6 @@ static int octeon_pci_os_setup(struct octeon_device *oct)
 	return 0;
 }
 
-/**
- * \brief Check Tx queue state for a given network buffer
- * @param lio per-network private data
- * @param skb network buffer
- */
-static int check_txq_state(struct lio *lio, struct sk_buff *skb)
-{
-	int q, iq;
-
-	q = skb->queue_mapping;
-	iq = lio->linfo.txpciq[q % lio->oct_dev->num_iqs].s.q_no;
-
-	if (octnet_iq_is_full(lio->oct_dev, iq))
-		return 0;
-
-	if (__netif_subqueue_stopped(lio->netdev, q)) {
-		INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, iq, tx_restart, 1);
-		netif_wake_subqueue(lio->netdev, q);
-	}
-
-	return 1;
-}
-
 /**
  * \brief Unmap and free network buffer
  * @param buf buffer
@@ -993,8 +970,6 @@ static void free_netbuf(void *buf)
 	dma_unmap_single(&lio->oct_dev->pci_dev->dev, finfo->dptr, skb->len,
 			 DMA_TO_DEVICE);
 
-	check_txq_state(lio, skb);
-
 	tx_buffer_free(skb);
 }
 
@@ -1036,8 +1011,6 @@ static void free_netsgbuf(void *buf)
 	list_add_tail(&g->list, &lio->glist[iq]);
 	spin_unlock(&lio->glist_lock[iq]);
 
-	check_txq_state(lio, skb); /* mq support: sub-queue state check */
-
 	tx_buffer_free(skb);
 }
 
@@ -1083,8 +1056,6 @@ static void free_netsgbuf_with_resp(void *buf)
 	spin_unlock(&lio->glist_lock[iq]);
 
 	/* Don't free the skb yet */
-
-	check_txq_state(lio, skb);
 }
 
 /**