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From: Greg Hazel <ghazel@gmail.com>
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Subject: BT_AMP_POLICY and RFCOMM
Date: Mon, 23 Jan 2012 20:15:16 -0800
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To: linux-bluetooth@vger.kernel.org
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Hi,

I'm trying to set BT_AMP_POLICY on an RFCOMM socket to BT_AMP_POLICY_PREFER_AMP. In return I'm getting "Operation not supported on transport endpoint" (errno 95). Glancing at the code, it looks like RFCOMM sockets do not handle BT_AMP_POLICY, and the default policy for the underlying L2CAP socket is BT_AMP_POLICY_REQUIRE_BR_EDR. However, the L2CAP socket is L2CAP_MODE_ERTM, so my expectation is that it would work to use AMP.

So, why was BT_AMP_POLICY left out for RFCOMM sockets? Was it simply an oversight?

-Greg