2007/12/13, Kok, Auke <[email protected]>:
> David Miller wrote:
> > From: Andrew Gallatin <[email protected]>
> > Date: Wed, 12 Dec 2007 12:29:23 -0500
> >
> >> Is the netif_running() check even required?
> >
> > No, it is not.
> >
> > When a device is brought down, one of the first things
> > that happens is that we wait for all pending NAPI polls
> > to complete, then block any new polls from starting.
>
> I think this was previously (pre-2.6.24) not the case, which is why e1000 et al
> has this check as well and that's exactly what is causing most of the
> net_rx_action oopses in the first place. Without the netif_running() check
> previously the drivers were just unusable with NAPI and prone to many races with
> down (i.e. touching some ethtool ioctl which wants to do a reset while routing
> small packets at high numbers). that's why we added the netif_running() check in
> the first place :)
>
> There might be more drivers lurking that need this change...
>
> Auke
>
Also in my case, without netif_running() check, I cannot do ifconfig down.
It stucked if packet generator was sending packets.
Thanks
Joonwoo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
