netdev - Re: bonding with 3c59x driver

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Date:	Tue, 14 Feb 2012 12:13:37 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Steffen Klassert <klassert@...hematik.tu-chemnitz.de>
Cc:	Jean Delvare <jdelvare@...e.de>, Jay Vosburgh <fubar@...ibm.com>,
	netdev@...r.kernel.org
Subject: Re: bonding with 3c59x driver

Le mardi 14 février 2012 à 12:06 +0100, Steffen Klassert a écrit :
> On Tue, Feb 14, 2012 at 11:22:10AM +0100, Jean Delvare wrote:
> > 
> > Well I am still curious why the 3c59x driver has such slow polling when 
> > other drivers I have been testing are able to report almost instantly 
> > when I remove a network cable. Could it be that other network chips 
> > generate an interrupt on cable removal and the 3com chips do not?
> > 
> 
> Yes, at least some of the supported chips do not generate an interrupt
> on cable removal, so we have to check for this with a timer.
> --

We could have a 5 sec timer in case device is a slave.

diff --git a/drivers/net/ethernet/3com/3c59x.c b/drivers/net/ethernet/3com/3c59x.c
index 1282f04..e463d10 100644
--- a/drivers/net/ethernet/3com/3c59x.c
+++ b/drivers/net/ethernet/3com/3c59x.c
@@ -1841,7 +1841,7 @@ vortex_timer(unsigned long data)
 		ok = 1;
 	}
 
-	if (!netif_carrier_ok(dev))
+	if (dev->flags & IFF_SLAVE || !netif_carrier_ok(dev))
 		next_tick = 5*HZ;
 
 	if (vp->medialock)


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