netdev - [PATCH] net: pxa168_eth: add netconsole support

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Message-Id: <20180127202907.23935-1-amonakov@ispras.ru>
Date:   Sat, 27 Jan 2018 23:29:07 +0300
From:   Alexander Monakov <amonakov@...ras.ru>
To:     netdev@...r.kernel.org
Cc:     Alexander Monakov <amonakov@...ras.ru>,
        Russell King <rmk+kernel@....linux.org.uk>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH] net: pxa168_eth: add netconsole support

This implements ndo_poll_controller callback which is necessary to
enable netconsole.

Signed-off-by: Alexander Monakov <amonakov@...ras.ru>
Cc: Russell King <rmk+kernel@....linux.org.uk>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc: Florian Fainelli <f.fainelli@...il.com>
---
Hello,

I'm using this to enable netconsole on a consumer device built around the
Marvell Berlin BG2CD SoC.

Thanks.
Alexander

 drivers/net/ethernet/marvell/pxa168_eth.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/net/ethernet/marvell/pxa168_eth.c b/drivers/net/ethernet/marvell/pxa168_eth.c
index 7bbd86f08e5f..6a188f7b426a 100644
--- a/drivers/net/ethernet/marvell/pxa168_eth.c
+++ b/drivers/net/ethernet/marvell/pxa168_eth.c
@@ -1362,6 +1362,14 @@ static int pxa168_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr,
 	return -EOPNOTSUPP;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void pxa168_eth_netpoll(struct net_device *dev)
+{
+	struct pxa168_eth_private *pep = netdev_priv(dev);
+	napi_schedule(&pep->napi);
+}
+#endif
+
 static void pxa168_get_drvinfo(struct net_device *dev,
 			       struct ethtool_drvinfo *info)
 {
@@ -1390,6 +1398,9 @@ static const struct net_device_ops pxa168_eth_netdev_ops = {
 	.ndo_do_ioctl		= pxa168_eth_do_ioctl,
 	.ndo_change_mtu		= pxa168_eth_change_mtu,
 	.ndo_tx_timeout		= pxa168_eth_tx_timeout,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller    = pxa168_eth_netpoll,
+#endif
 };
 
 static int pxa168_eth_probe(struct platform_device *pdev)
-- 
2.11.0