On Thu, 13 Dec 2007 06:19:38 -0800 (PST) David Miller <[EMAIL PROTECTED]> wrote:
> From: Andrew Gallatin <[EMAIL PROTECTED]> > Date: Thu, 13 Dec 2007 09:13:54 -0500 > > > If the netif_running() check is indeed required to make a device break > > out of napi polling and respond to an ifconfig down, then I think the > > netif_running() check should be moved up into net_rx_action() to avoid > > potential for driver complexity and bugs like the ones you found. > > That, or something like it, definitely sounds reasonable and much > better than putting the check into every driver :-) > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html It is not possible to do netif_running() check in generic code as currently written because of the case of devices where a single NAPI object is being used to handle two devices. The association between napi and netdevice is M to N. There are cases like niu that have multiple NAPI's and one netdevice; and devices like sky2 that can have one NAPI and 2 netdevice's. The existing pointer from napi to netdevice is only used by netconsole now. For devices like sky2 it means that netconsole can't work on the the second port which is a not a big problem. But adding a netif_running() check would be a big issue. -- Stephen Hemminger <[EMAIL PROTECTED]> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
