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Date: Tue, 11 Feb 2014 11:05:01 -0800 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Mike Marciniszyn <mike.marciniszyn@...el.com>, Ira Weiny <ira.weiny@...el.com>, Roland Dreier <roland@...estorage.com> Subject: [PATCH 3.12 035/107] IB/qib: Fix QP check when looping back to/from QP1 3.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ira Weiny <ira.weiny@...el.com> commit 6e0ea9e6cbcead7fa8c76e3e3b9de4a50c5131c5 upstream. The GSI QP type is compatible with and should be allowed to send data to/from any UD QP. This was found when testing ibacm on the same node as an SA. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@...el.com> Signed-off-by: Ira Weiny <ira.weiny@...el.com> Signed-off-by: Roland Dreier <roland@...estorage.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/infiniband/hw/qib/qib_ud.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) --- a/drivers/infiniband/hw/qib/qib_ud.c +++ b/drivers/infiniband/hw/qib/qib_ud.c @@ -57,13 +57,20 @@ static void qib_ud_loopback(struct qib_q struct qib_sge *sge; struct ib_wc wc; u32 length; + enum ib_qp_type sqptype, dqptype; qp = qib_lookup_qpn(ibp, swqe->wr.wr.ud.remote_qpn); if (!qp) { ibp->n_pkt_drops++; return; } - if (qp->ibqp.qp_type != sqp->ibqp.qp_type || + + sqptype = sqp->ibqp.qp_type == IB_QPT_GSI ? + IB_QPT_UD : sqp->ibqp.qp_type; + dqptype = qp->ibqp.qp_type == IB_QPT_GSI ? + IB_QPT_UD : qp->ibqp.qp_type; + + if (dqptype != sqptype || !(ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK)) { ibp->n_pkt_drops++; goto drop; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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