netdev - Re: [PATCH net-next v2] dev: always advertise rx

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Message-ID: <20130924094707.41641042@nehalam.linuxnetplumber.net>
Date:	Tue, 24 Sep 2013 09:47:07 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net
Subject: Re: [PATCH net-next v2] dev: always advertise rx_flags changes

On Tue, 24 Sep 2013 18:21:32 +0200
Nicolas Dichtel <nicolas.dichtel@...nd.com> wrote:

> diff --git a/net/core/dev.c b/net/core/dev.c
> index 5c713f2239cc..067bfbe70c4c 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -4822,7 +4822,7 @@ static void dev_change_rx_flags(struct net_device *dev, int flags)
>  		ops->ndo_change_rx_flags(dev, flags);
>  }
>  
> -static int __dev_set_promiscuity(struct net_device *dev, int inc)
> +static int __dev_set_promiscuity(struct net_device *dev, int inc, bool notif)
>  {
>  	unsigned int old_flags = dev->flags;
>  	kuid_t uid;
> @@ -4865,6 +4865,10 @@ static int __dev_set_promiscuity(struct net_device *dev, int inc)
>  
>  		dev_change_rx_flags(dev, IFF_PROMISC);
>  	}
> +	if (notif) {
> +		call_netdevice_notifiers(NETDEV_CHANGE, dev);
> +		rtmsg_ifinfo(RTM_NEWLINK, dev, IFF_PROMISC);
> +	}
>  	return 0;
>  }

This is getting uglier as the conditional is added to each
function. Why not create a helper function and change callers.

static void __dev_notify_flag(dev, int flags)
{
        call_netdevice_notifiers(NETDEV_CHANGE, dev);
	rtmsg_ifinfo(RTM_NEWLINK, dev, flags);
}
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