netdev - Re: [PATCH net-next] Better handling of transition to NUD

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Message-Id: <20150521.165332.1552040068826483613.davem@davemloft.net>
Date:	Thu, 21 May 2015 16:53:32 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ek@...gle.com
Cc:	hannes@...essinduktion.org, lorenzo@...gle.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] Better handling of transition to NUD_PROBE
 state

From: Erik Kline <ek@...gle.com>
Date: Mon, 18 May 2015 19:44:41 +0900

> [1] When entering NUD_PROBE state via neigh_update(), perhaps received
>     from userspace, correctly (re)initialize the probes count to zero.
> 
>     This is useful for forcing revalidation of a neighbor (for example
>     if the host is attempting to do DNA [IPv4 4436, IPv6 6059]).
> 
> [2] Notify listeners when a neighbor goes into NUD_PROBE state.
> 
>     By sending notifications on entry to NUD_PROBE state listeners get
>     more timely warnings of imminent connectivity issues.
> 
>     The current notifications on entry to NUD_STALE have somewhat
>     limited usefulness: NUD_STALE is a perfectly normal state, as is
>     NUD_DELAY, whereas notifications on entry to NUD_FAILURE come after
>     a neighbor reachability problem has been confirmed (typically after
>     three probes).
> 
> Signed-off-by: Erik Kline <ek@...gle.com>

Please, in the future, put a proper subsystem prefix in the Subject
line of your patch submissions.  In this particular case "neigh: "
would have been appropriate and is what I added when applying your
patch.

Applied, thanks.
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