From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758069AbYAXRGG (ORCPT ); Thu, 24 Jan 2008 12:06:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758516AbYAXQ7N (ORCPT ); Thu, 24 Jan 2008 11:59:13 -0500 Received: from mtagate4.de.ibm.com ([195.212.29.153]:43171 "EHLO mtagate4.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757179AbYAXQ7M (ORCPT ); Thu, 24 Jan 2008 11:59:12 -0500 From: Joachim Fenkes To: "LinuxPPC-Dev" , LKML , "OF-General" , Roland Dreier , "OF-EWG" Subject: [PATCH] IB/ehca: Prevent sending UD packets to QP0 User-Agent: KMail/1.8.2 Cc: "Hoang-Nam Nguyen" , Christoph Raisch , Stefan Roscher MIME-Version: 1.0 Content-Disposition: inline X-Length: 2328 Date: Thu, 24 Jan 2008 17:59:08 +0100 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200801241759.09065.fenkes@de.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org IB spec doesn't allow packets to QP0 sent on any other VL than VL15. Hardware doesn't filter those packets on the send side, so we need to do this in the driver and firmware. As eHCA doesn't support QP0, we can just filter out all traffic going to QP0, regardless of SL or VL. Signed-off-by: Joachim Fenkes --- drivers/infiniband/hw/ehca/ehca_reqs.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/infiniband/hw/ehca/ehca_reqs.c b/drivers/infiniband/hw/ehca/ehca_reqs.c index 3aacc8c..2ce8cff 100644 --- a/drivers/infiniband/hw/ehca/ehca_reqs.c +++ b/drivers/infiniband/hw/ehca/ehca_reqs.c @@ -209,6 +209,10 @@ static inline int ehca_write_swqe(struct ehca_qp *qp, ehca_gen_err("wr.ud.ah is NULL. qp=%p", qp); return -EINVAL; } + if (unlikely(send_wr->wr.ud.remote_qpn == 0)) { + ehca_gen_err("dest QP# is 0. qp=%x", qp->real_qp_num); + return -EINVAL; + } my_av = container_of(send_wr->wr.ud.ah, struct ehca_av, ib_ah); wqe_p->u.ud_av.ud_av = my_av->av; -- 1.5.2