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Message-Id: <20120727.134650.366843201370833087.davem@davemloft.net> Date: Fri, 27 Jul 2012 13:46:50 -0700 (PDT) From: David Miller <davem@...emloft.net> To: jbenc@...hat.com Cc: netdev@...r.kernel.org, makc@...hat.com Subject: Re: [PATCH] net: fix rtnetlink IFF_PROMISC and IFF_ALLMULTI handling From: Jiri Benc <jbenc@...hat.com> Date: Fri, 27 Jul 2012 14:58:22 +0200 > When device flags are set using rtnetlink, IFF_PROMISC and IFF_ALLMULTI > flags are handled specially. Function dev_change_flags sets IFF_PROMISC and > IFF_ALLMULTI bits in dev->gflags according to the passed value but > do_setlink passes a result of rtnl_dev_combine_flags which takes those bits > from dev->flags. > > This can be easily trigerred by doing: > > tcpdump -i eth0 & > ip l s up eth0 > > ip sets IFF_UP flag in ifi_flags and ifi_change, which is combined with > IFF_PROMISC by rtnl_dev_combine_flags, causing __dev_change_flags to set > IFF_PROMISC in gflags. > > Reported-by: Max Matveev <makc@...hat.com> > Signed-off-by: Jiri Benc <jbenc@...hat.com> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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