From: Ian Campbell Date: Wed, 26 May 2010 00:09:42 +0000 (+0000) Subject: arp_notify: allow drivers to explicitly request a notification event. X-Git-Tag: v2.6.36-rc1~571^2~729 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06c4648d46d1b757d6b9591a86810be79818b60c;p=pandora-kernel.git arp_notify: allow drivers to explicitly request a notification event. Currently such notifications are only generated when the device comes up or the address changes. However one use case for these notifications is to enable faster network recovery after a virtual machine migration (by causing switches to relearn their MAC tables). A migration appears to the network stack as a temporary loss of carrier and therefore does not trigger either of the current conditions. Rather than adding carrier up as a trigger (which can cause issues when interfaces a flapping) simply add an interface which the driver can use to explicitly trigger the notification. Signed-off-by: Ian Campbell Cc: Stephen Hemminger Cc: Jeremy Fitzhardinge Cc: David S. Miller Cc: netdev@vger.kernel.org Cc: stable@kernel.org Signed-off-by: David S. Miller --- Reading git-diff-tree failed