linux-kernel - Re: [PATCH 2/3] netpoll: rework skb transmit queue

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 for Android: free password hash cracker in your pocket

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

Date:	Fri, 20 Oct 2006 08:18:57 -0700
From:	Stephen Hemminger <shemminger@...l.org>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] netpoll: rework skb transmit queue

On Fri, 20 Oct 2006 00:15:30 -0700 (PDT)
David Miller <davem@...emloft.net> wrote:

> From: Stephen Hemminger <shemminger@...l.org>
> Date: Thu, 19 Oct 2006 10:15:43 -0700
> 
> > The original skb management for netpoll was a mess, it had two queue paths
> > and a callback. This changes it to have a per-instance transmit queue
> > and use a tasklet rather than a work queue for the congested case.
> > 
> > Signed-off-by: Stephen Hemminger <shemminger@...l.org>
> 
> I think you mis-diffed this one:
> 
> - 	WARN_ON(skb->protocol == 0);
> 
> That line doesn't exist in my copy of net/core/netpoll.c
> even with your first patch applied.
> 
> Also, you forgot to remove the ->drop callback pointer
> from struct netpoll, which you should do if it really
> isn't used any more.
> 
> I think you might run into problems there, as I believe the netdump
> stuff does make non-trivial use of the ->drop callback.  Indeed, it
> uses the ->dump callback for invoking a special
> netpoll_start_netdump() function.  I'm pretty sure ->dump was created
> specifically to accomodate netdump.
> 

Netdump is not in the tree, so I can't fix it. Also netdump is pretty
much superseded by kdump.

> So this is something else which will need to be worked out before we
> can apply this patch.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/