netdev - [PATCH net-next 7/9] skge: use napi_complete

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Date:   Sat,  4 Feb 2017 10:20:36 -0800
From:   Eric Dumazet <edumazet@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 7/9] skge: use napi_complete_done()

Use napi_complete_done() instead of __napi_complete() to :

1) Get support of gro_flush_timeout if opt-in
2) Not rearm interrupts for busy-polling users.
3) use standard NAPI API and get rid of napi_gro_flush()

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 drivers/net/ethernet/marvell/skge.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/marvell/skge.c b/drivers/net/ethernet/marvell/skge.c
index 81106b73e468b3d542fbbef94503278103c7..d2cec5593655a6e442c19e1a32ae86768412 100644
--- a/drivers/net/ethernet/marvell/skge.c
+++ b/drivers/net/ethernet/marvell/skge.c
@@ -3201,7 +3201,7 @@ static void skge_tx_done(struct net_device *dev)
 	}
 }
 
-static int skge_poll(struct napi_struct *napi, int to_do)
+static int skge_poll(struct napi_struct *napi, int budget)
 {
 	struct skge_port *skge = container_of(napi, struct skge_port, napi);
 	struct net_device *dev = skge->netdev;
@@ -3214,7 +3214,7 @@ static int skge_poll(struct napi_struct *napi, int to_do)
 
 	skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
 
-	for (e = ring->to_clean; prefetch(e->next), work_done < to_do; e = e->next) {
+	for (e = ring->to_clean; prefetch(e->next), work_done < budget; e = e->next) {
 		struct skge_rx_desc *rd = e->desc;
 		struct sk_buff *skb;
 		u32 control;
@@ -3236,12 +3236,10 @@ static int skge_poll(struct napi_struct *napi, int to_do)
 	wmb();
 	skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_START);
 
-	if (work_done < to_do) {
+	if ((work_done < budget) && napi_complete_done(napi, work_done)) {
 		unsigned long flags;
 
-		napi_gro_flush(napi, false);
 		spin_lock_irqsave(&hw->hw_lock, flags);
-		__napi_complete(napi);
 		hw->intr_mask |= napimask[skge->port];
 		skge_write32(hw, B0_IMSK, hw->intr_mask);
 		skge_read32(hw, B0_IMSK);
-- 
2.11.0.483.g087da7b7c-goog