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IB/mlx4: Update QP state if query QP succeeds 

If the QP was moved to another state (such as SQE) by the hardware,
then after this change the user won't have to set the IBV_QP_CUR_STATE
mask in order to execute modify QP in order to recover from this state.

Signed-off-by: Dotan Barak <dotanb@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Dotan Barak 2008-04-16 21:09:34 -07:00 committed by Roland Dreier
parent 5121df3ae4
commit 0df6703095
1 changed files with 12 additions and 5 deletions
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17
drivers/infiniband/hw/mlx4/qp.c
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@ -1785,7 +1785,9 @@ int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr
struct mlx4_ib_qp *qp = to_mqp(ibqp);
struct mlx4_qp_context context;
int mlx4_state;
int err;
int err = 0;
mutex_lock(&qp->mutex);
if (qp->state == IB_QPS_RESET) {
qp_attr->qp_state = IB_QPS_RESET;
@ -1793,12 +1795,15 @@ int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr
}
err = mlx4_qp_query(dev->dev, &qp->mqp, &context);
if (err)
return -EINVAL;
if (err) {
err = -EINVAL;
goto out;
}
mlx4_state = be32_to_cpu(context.flags) >> 28;
qp_attr->qp_state = to_ib_qp_state(mlx4_state);
qp->state = to_ib_qp_state(mlx4_state);
qp_attr->qp_state = qp->state;
qp_attr->path_mtu = context.mtu_msgmax >> 5;
qp_attr->path_mig_state =
to_ib_mig_state((be32_to_cpu(context.flags) >> 11) & 0x3);
@ -1857,6 +1862,8 @@ int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr
qp_init_attr->cap = qp_attr->cap;
return 0;
out:
mutex_unlock(&qp->mutex);
return err;
}