From: Gregory CLEMENT <gregory.clement@bootlin.com>
To: "David S. Miller" <davem@davemloft.net>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Cc: "Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
linux-arm-kernel@lists.infradead.org,
"Jason Cooper" <jason@lakedaemon.net>,
"Andrew Lunn" <andrew@lunn.ch>,
"Sebastian Hesselbarth" <sebastian.hesselbarth@gmail.com>,
"Gregory CLEMENT" <gregory.clement@bootlin.com>,
"Yelena Krivosheev" <yelena@marvell.com>,
"Nadav Haklai" <nadavh@marvell.com>,
"Marcin Wojtas" <mw@semihalf.com>,
"Dmitri Epshtein" <dima@marvell.com>,
"Antoine Tenart" <antoine.tenart@bootlin.com>,
"Miquèl Raynal" <miquel.raynal@bootlin.com>,
"Maxime Chevallier" <maxime.chevallier@bootlin.com>
Subject: [PATCH net-next v2 1/7] net: ethernet: mvneta: Fix napi structure mixup on armada 3700
Date: Fri, 13 Jul 2018 18:18:35 +0200 [thread overview]
Message-ID: <20180713161841.11202-2-gregory.clement@bootlin.com> (raw)
In-Reply-To: <20180713161841.11202-1-gregory.clement@bootlin.com>
From: Andrew Lunn <andrew@lunn.ch>
The mvneta Ethernet driver is used on a few different Marvell SoCs.
Some SoCs have per cpu interrupts for Ethernet events. Some SoCs have
a single interrupt, independent of the CPU. The driver handles this by
having a per CPU napi structure when there are per CPU interrupts, and
a global napi structure when there is a single interrupt.
When the napi core calls mvneta_poll(), it passes the napi
instance. This was not being propagated through the call chain, and
instead the per-cpu napi instance was passed to napi_gro_receive()
call. This breaks when there is a single global napi instance.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Fixes: 2636ac3cc2b4 ("net: mvneta: Add network support for Armada 3700 SoC")
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
---
drivers/net/ethernet/marvell/mvneta.c | 22 ++++++++++++----------
1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 0ad2f3f7da85..ec84db47d82d 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -1901,10 +1901,10 @@ static void mvneta_rxq_drop_pkts(struct mvneta_port *pp,
}
/* Main rx processing when using software buffer management */
-static int mvneta_rx_swbm(struct mvneta_port *pp, int rx_todo,
+static int mvneta_rx_swbm(struct napi_struct *napi,
+ struct mvneta_port *pp, int rx_todo,
struct mvneta_rx_queue *rxq)
{
- struct mvneta_pcpu_port *port = this_cpu_ptr(pp->ports);
struct net_device *dev = pp->dev;
int rx_done;
u32 rcvd_pkts = 0;
@@ -1959,7 +1959,7 @@ static int mvneta_rx_swbm(struct mvneta_port *pp, int rx_todo,
skb->protocol = eth_type_trans(skb, dev);
mvneta_rx_csum(pp, rx_status, skb);
- napi_gro_receive(&port->napi, skb);
+ napi_gro_receive(napi, skb);
rcvd_pkts++;
rcvd_bytes += rx_bytes;
@@ -2001,7 +2001,7 @@ static int mvneta_rx_swbm(struct mvneta_port *pp, int rx_todo,
mvneta_rx_csum(pp, rx_status, skb);
- napi_gro_receive(&port->napi, skb);
+ napi_gro_receive(napi, skb);
}
if (rcvd_pkts) {
@@ -2020,10 +2020,10 @@ static int mvneta_rx_swbm(struct mvneta_port *pp, int rx_todo,
}
/* Main rx processing when using hardware buffer management */
-static int mvneta_rx_hwbm(struct mvneta_port *pp, int rx_todo,
+static int mvneta_rx_hwbm(struct napi_struct *napi,
+ struct mvneta_port *pp, int rx_todo,
struct mvneta_rx_queue *rxq)
{
- struct mvneta_pcpu_port *port = this_cpu_ptr(pp->ports);
struct net_device *dev = pp->dev;
int rx_done;
u32 rcvd_pkts = 0;
@@ -2085,7 +2085,7 @@ static int mvneta_rx_hwbm(struct mvneta_port *pp, int rx_todo,
skb->protocol = eth_type_trans(skb, dev);
mvneta_rx_csum(pp, rx_status, skb);
- napi_gro_receive(&port->napi, skb);
+ napi_gro_receive(napi, skb);
rcvd_pkts++;
rcvd_bytes += rx_bytes;
@@ -2129,7 +2129,7 @@ static int mvneta_rx_hwbm(struct mvneta_port *pp, int rx_todo,
mvneta_rx_csum(pp, rx_status, skb);
- napi_gro_receive(&port->napi, skb);
+ napi_gro_receive(napi, skb);
}
if (rcvd_pkts) {
@@ -2722,9 +2722,11 @@ static int mvneta_poll(struct napi_struct *napi, int budget)
if (rx_queue) {
rx_queue = rx_queue - 1;
if (pp->bm_priv)
- rx_done = mvneta_rx_hwbm(pp, budget, &pp->rxqs[rx_queue]);
+ rx_done = mvneta_rx_hwbm(napi, pp, budget,
+ &pp->rxqs[rx_queue]);
else
- rx_done = mvneta_rx_swbm(pp, budget, &pp->rxqs[rx_queue]);
+ rx_done = mvneta_rx_swbm(napi, pp, budget,
+ &pp->rxqs[rx_queue]);
}
if (rx_done < budget) {
--
2.18.0
next prev parent reply other threads:[~2018-07-13 16:20 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-13 16:18 [PATCH net-next v2 0/7] A fix and a few improvements on mvneta Gregory CLEMENT
2018-07-13 16:18 ` Gregory CLEMENT [this message]
2018-07-13 16:18 ` [PATCH net-next v2 2/7] net: mvneta: remove data pointer usage from device_node structure Gregory CLEMENT
2018-07-13 16:18 ` [PATCH net-next v2 3/7] net: mvneta: increase number of buffers in RX and TX queue Gregory CLEMENT
2018-07-13 19:17 ` Russell King - ARM Linux
2018-07-18 15:37 ` Gregory CLEMENT
2018-07-18 20:55 ` Dave Taht
2018-07-13 16:18 ` [PATCH net-next v2 4/7] net: mvneta: discriminate error cause for missed packet Gregory CLEMENT
2018-07-13 16:18 ` [PATCH net-next v2 5/7] net: mvneta: Allocate page for the descriptor Gregory CLEMENT
2018-07-14 1:23 ` David Miller
2018-07-13 16:18 ` [PATCH net-next v2 6/7] net: mvneta: Verify hardware checksum only when offload checksum feature is set Gregory CLEMENT
2018-07-13 16:18 ` [PATCH net-next v2 7/7] net: mvneta: Improve the buffer allocation method for SWBM Gregory CLEMENT
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