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/
