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Message-ID: <505740C1.9080706@intel.com> Date: Mon, 17 Sep 2012 08:24:49 -0700 From: John Fastabend <john.r.fastabend@...el.com> To: Ajith Adapa <adapa.ajith@...il.com> CC: netdev@...r.kernel.org, Stephen Hemminger <shemminger@...tta.com> Subject: Re: Regarding group_forward_mask in bridge in 3.4 kernel On 9/17/2012 7:43 AM, Ajith Adapa wrote: > Hi, > > I am trying to enable group_fwd_mask in bridge by giving the below > command so that it can forward provider bpdu's whose destination > address is 01-80-C2-00-00-08. > > echo 8 > /sys/class/net/vpc1_br/bridge/group_fwd_mask > wrong value see the logic you quoted use 1 << 8 echo 256 > /sys/class/net/... Your example fwds non-TPMR addresses 01-80-c2-00-00-03. [...] > Am I giving wrong value for group_fwd_mask ?? Yep wrong value. > I tried other values but seems only 8 and 0 is accepted. The logic makes an attempt to restrict forwarding by masking 0x4007u, catching many known control protocols. See commit for details, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=515853ccecc6987dfb8ed809dd8bf8900286f29e .John -- 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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