linux-kernel - Re: cpsw without dual_emac drops multicast in promisc mode

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Date:	Thu, 25 Sep 2014 11:42:39 -0400
From:	"Lennart Sorensen" <lsorense@...lub.uwaterloo.ca>
To:	linux-kernel@...r.kernel.org
Cc:	Len Sorensen <lsorense@...lub.uwaterloo.ca>,
	Mugunthan V N <mugunthanvnm@...com>
Subject: Re: cpsw without dual_emac drops multicast in promisc mode

On Thu, Sep 25, 2014 at 11:19:06AM -0400, Lennart Sorensen wrote:
> It seems that running tcpdump (and hence enabling promisc mode), causes
> all multicast packets to dropped with the cpsw driver.  We are not using
> the dual_emac feature, we are just using one port.  This is on the DRA7XX.
> 
> I see that in dual_emac mode, it is set to ALE_BYPASS (no idea if this
> works, I haven't tried dual_emac mode).  In non dual_emac mode it uses
> ALE_P0_UNI_FLOOD after flushing the multicast entries.  Maybe that's
> not good enough.

I forgot to CC the appropriate people.

-- 
Len Sorensen
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