From: Jason Wang <jasowang@redhat.com>
Date: Sun, 2 Dec 2012 17:19:45 +0000 (+0000)
Subject: tuntap: attach queue 0 before registering netdevice
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~45^2~112
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb0fb363f920e4d8c70d30b712f9dd433271218c;p=pandora-kernel.git

tuntap: attach queue 0 before registering netdevice

We attach queue 0 after registering netdevice currently. This leads to call
netif_set_real_num_{tx|rx}_queues() after registering the netdevice. Since we
allow tun/tap has a maximum of 1024 queues, this may lead a huge number of
uevents to be injected to userspace since we create 2048 kobjects and then
remove 2046. Solve this problem by attaching queue 0 and set the real number of
queues before registering netdevice.

Reported-by: Jiri Slaby <jslaby@suse.cz>
Tested-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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