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From: Ben Greear <greearb@candelatech.com>
To: jamal <hadi@cyberus.ca>
Cc: Robert Olsson <Robert.Olsson@data.slu.se>,
	"'netdev@oss.sgi.com'" <netdev@oss.sgi.com>
Subject: Re: tulip NAPI patch that works with 2.4.20-pre9 or so?
Date: Mon, 21 Oct 2002 23:07:33 -0700	[thread overview]
Message-ID: <3DB4EB25.5050706@candelatech.com> (raw)
In-Reply-To: Pine.GSO.4.30.0210210826440.17911-100000@shell.cyberus.ca

jamal wrote:

> In addition to solve your skb problem pick Roberts latest
> recycling patch at:
> ftp://robur.slu.se/pub/Linux/net-development/skb_recycling/recycle12.pat
> The driver i pointed to above has skb-recycling built in.

Robert, I am porting the existing tulip + your napi patch to support
skb-recycling.  (I realize someone has probably done that, but I
can't find it...Jamal's links are busted!)

In the help file, you suggest this at close:

         for (i=0; i<NR_CPUS; i++) {
                 if(adapter->cnt[i]) {
                         current->state = TASK_INTERRUPTIBLE;
                         schedule_timeout(1);
                 }
         }

I think the second if should probably be while, ie like this:

         for (i=0; i<NR_CPUS; i++) {
                 while(adapter->cnt[i]) {
                         current->state = TASK_INTERRUPTIBLE;
                         schedule_timeout(1);
                 }
         }

Otherwise, you race, and may delete an object that is still in use
somewhere up the stack.

Let me know if I'm nuts!

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>       <Ben_Greear AT excite.com>
President of Candela Technologies Inc      http://www.candelatech.com
ScryMUD:  http://scry.wanfear.com     http://scry.wanfear.com/~greear

  parent reply	other threads:[~2002-10-22  6:07 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-10-19 22:03 tulip NAPI patch that works with 2.4.20-pre9 or so? Ben Greear
2002-10-20 20:00 ` Robert Olsson
2002-10-20 22:44   ` Ben Greear
2002-10-21  5:45   ` Ben Greear
2002-10-21 12:49     ` jamal
2002-10-21 13:10       ` jamal
2002-10-21 18:37       ` Ben Greear
2002-10-23  0:54         ` jamal
2002-10-22  6:07       ` Ben Greear [this message]
2002-10-22 13:55         ` Robert Olsson
2002-10-22 16:56           ` Ben Greear

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