From: Wang Chen <wangchen@cn.fujitsu.com>
Date: Tue, 15 Jul 2008 03:55:26 +0000 (-0700)
Subject: ipv4: Check return of dev_set_allmulti
X-Git-Tag: v2.6.27-rc1~969^2~153
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d607032db0ccd7274bee348df3214f6f52b24816;p=pandora-kernel.git

ipv4: Check return of dev_set_allmulti

allmulti might overflow.
Commit: "netdevice: Fix promiscuity and allmulti overflow" in net-next makes
dev_set_promiscuity/allmulti return error number if overflow happened.

Here, we check the positive increment for allmulti to get error return.

PS: For unwinding tunnel creating, we let ipip->ioctl() to handle it.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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