netdev - Gianfar driver issue

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]

Date:	Tue, 11 Dec 2012 10:59:03 +0100
From:	"Cedric VONCKEN" <cedric.voncken@...sys.fr>
To:	<netdev@...r.kernel.org>
Subject: Gianfar driver issue

	Hi all, 

	I think he have an issue in Gianfar driver.

	When the Netdev tx queue timeout occurred, the function
gfar_timeout(..) is called. This function calls indirectly the
gfar_init_mac(..) function.

	In this function, the rctrl register is set to a default value.

	If the Promiscuous is enable on the net dev ( flag IFF_PROMISC
is set), the gfar_init_function does not reactivate it. 

	The Promiscuous mode is used for example when the netdev is
bridged. 
	
	I apply this patch to fix it.

	--- a/drivers/net/ethernet/freescale/gianfar.c.	2012-06-01
09:16:13.000000000 +0200
	+++ b/drivers/net/ethernet/freescale/gianfar.c	2012-12-11
10:38:23.000000000 +0100
	@@ -356,6 +356,11 @@
 	/* Configure the coalescing support */
 	gfar_configure_coalescing(priv, 0xFF, 0xFF);
 
+	if (ndev->flags & IFF_PROMISC) {
+		/* Set RCTRL to PROM */
+		rctrl |= RCTRL_PROM;
+	}
+
 	if (priv->rx_filer_enable) {
 		rctrl |= RCTRL_FILREN;
 		/* Program the RIR0 reg with the required distribution
*/



Cedric Voncken 

--
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