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From: Jose Abreu <Jose.Abreu@synopsys.com>
To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Cc: Jose Abreu <Jose.Abreu@synopsys.com>,
	Joao Pinto <Joao.Pinto@synopsys.com>,
	"David S . Miller" <davem@davemloft.net>,
	Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	Alexandre Torgue <alexandre.torgue@st.com>
Subject: [PATCH net-next v2 18/18] net: stmmac: Prevent missing interrupts when running NAPI
Date: Fri, 24 May 2019 10:20:26 +0200	[thread overview]
Message-ID: <e66362fde1dac9bb814646c8264c8dc3c4dbeeea.1558685828.git.joabreu@synopsys.com> (raw)
In-Reply-To: <cover.1558685827.git.joabreu@synopsys.com>
In-Reply-To: <cover.1558685827.git.joabreu@synopsys.com>

When we trigger NAPI we are disabling interrupts but in case we receive
or send a packet in the meantime, as interrupts are disabled, we will
miss this event.

Trigger both NAPI instances (RX and TX) when at least one event happens
so that we don't miss any interrupts.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index ce77a9a2eb56..a87ec70b19f1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2058,6 +2058,9 @@ static int stmmac_napi_check(struct stmmac_priv *priv, u32 chan)
 						 &priv->xstats, chan);
 	struct stmmac_channel *ch = &priv->channel[chan];
 
+	if (status)
+		status |= handle_rx | handle_tx;
+
 	if ((status & handle_rx) && (chan < priv->plat->rx_queues_to_use)) {
 		stmmac_disable_dma_irq(priv, priv->ioaddr, chan);
 		napi_schedule_irqoff(&ch->rx_napi);
-- 
2.7.4


  parent reply	other threads:[~2019-05-24  8:20 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-24  8:20 [PATCH net-next v2 00/18] net: stmmac: Improvements and Selftests Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 01/18] net: stmmac: Add MAC loopback callback to HWIF Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 02/18] net: stmmac: dwmac100: Add MAC loopback support Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 03/18] net: stmmac: dwmac1000: " Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 04/18] net: stmmac: dwmac4/5: " Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 05/18] net: stmmac: dwxgmac2: " Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 06/18] net: ethernet: stmmac: dwmac-sun8i: Enable control of loopback Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 07/18] net: stmmac: Switch MMC functions to HWIF callbacks Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 08/18] net: stmmac: dwmac1000: Also pass control frames while in promisc mode Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 09/18] net: stmmac: dwmac4/5: " Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 10/18] net: stmmac: dwxgmac2: " Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 11/18] net: stmmac: Introduce selftests support Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 12/18] net: stmmac: dwmac1000: Fix Hash Filter Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 13/18] net: stmmac: dwmac1000: Clear unused address entries Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 14/18] net: stmmac: dwmac4/5: Fix Hash Filter Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 15/18] net: stmmac: dwmac4/5: Do not disable whole RX in dma_stop_rx() Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 16/18] net: stmmac: dwxgmac2: " Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 17/18] net: stmmac: dwmac4/5: Clear unused address entries Jose Abreu
2019-05-24  8:20 ` Jose Abreu [this message]
2019-05-24 20:46 ` [PATCH net-next v2 00/18] net: stmmac: Improvements and Selftests David Miller

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