netdev - [PATCH] macb: Add support of the netpoll API

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090415154658.40e3639a@surf>
Date:	Wed, 15 Apr 2009 15:46:58 +0200
From:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
To:	hskinnemoen@...el.com
Cc:	netdev@...r.kernel.org,
	Michael Opdenacker <michael@...e-electrons.com>
Subject: [PATCH] macb: Add support of the netpoll API

macb: Add support of the netpoll API

With this patch in place, I'm successfully able to use the netconsole
mechanism with the Calao USB-A9263 board, which uses the AT91SAM9263
CPU, which in terms of Ethernet controller is supported by the macb
driver.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
---
 drivers/net/macb.c |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

Index: linux/drivers/net/macb.c
===================================================================
--- linux.orig/drivers/net/macb.c
+++ linux/drivers/net/macb.c
@@ -616,6 +616,19 @@
 	return IRQ_HANDLED;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void macb_poll_controller(struct net_device *dev)
+{
+	disable_irq(dev->irq);
+	macb_interrupt(dev->irq, dev);
+	enable_irq(dev->irq);
+}
+#endif
+
 static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct macb *bp = netdev_priv(dev);
@@ -1184,6 +1197,9 @@
 	dev->do_ioctl = macb_ioctl;
 	netif_napi_add(dev, &bp->napi, macb_poll, 64);
 	dev->ethtool_ops = &macb_ethtool_ops;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = macb_poll_controller;
+#endif
 
 	dev->base_addr = regs->start;
 


-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers and embedded Linux development,
consulting, training and support.
http://free-electrons.com
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html