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Date: Mon, 11 Jun 2007 15:19:15 -0700 From: Stephen Hemminger <shemminger@...ux-foundation.org> To: Auke Kok <auke-jan.h.kok@...el.com> Cc: netdev@...r.kernel.org, jeff@...zik.org, davem@...emloft.net, arjan@...ux.intel.com, joe@...ches.com Subject: Re: [PATCH 1/2] [RFC] NET: Implement a standard ndev_printk family On Mon, 11 Jun 2007 14:37:21 -0700 Auke Kok <auke-jan.h.kok@...el.com> wrote: > A lot of netdevices implement their own variant of printk and use > use variations of dev_printk, printk or others that use msg_enable, > which has been an eyesore with countless variations across drivers. > > This patch implements a standard ndev_printk and derivatives > such as ndev_err, ndev_info, ndev_warn that allows drivers to > transparently use both the msg_enable and a generic netdevice > message layout. It moves the msg_enable over to the net_device > struct and allows drivers to obsolete ethtool handling code of > the msg_enable value. > > The current code has each driver contain a copy of msg_enable and > handle the setting/changing through ethtool that way. Since the > netdev name is stored in the net_device struct, those two are > not coherently available in a uniform way across all drivers (a > single macro or function would not work since all drivers name > their net_device members differently). This makes netdevice > driver writes reinvent the wheel over and over again. > > It thus makes sense to move msg_enable to the net_device. This > gives us the opportunity to (1) initialize it by default with a > globally sane value, (2) remove msg_enable handling code w/r > ethtool for drivers that know and use the msg_enable member > of the net_device struct. (3) Ethtool code can just modify the > net_device msg_enable for drivers that do not have custom > msg_enable get/set handlers so converted drivers lose some > code for that as well. > > Signed-off-by: Auke Kok <auke-jan.h.kok@...el.com> > --- > > include/linux/netdevice.h | 38 ++++++++++++++++++++++++++++++++++++++ > net/core/dev.c | 5 +++++ > net/core/ethtool.c | 14 +++++++------- > 3 files changed, 50 insertions(+), 7 deletions(-) > > diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h > index 3a70f55..d185f41 100644 > --- a/include/linux/netdevice.h > +++ b/include/linux/netdevice.h > @@ -540,6 +540,8 @@ struct net_device > struct device dev; > /* space for optional statistics and wireless sysfs groups */ > struct attribute_group *sysfs_groups[3]; > + > + int msg_enable; > }; Since msg_enable is used as bits, it should be unsigned (probably unsigned long). - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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