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IB/mthca: Update QP state if query QP succeeds

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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 9285faa1e7
commit 5121df3ae4
1 changed files with 14 additions and 6 deletions
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20
drivers/infiniband/hw/mthca/mthca_qp.c
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@ -437,29 +437,34 @@ int mthca_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_m
int mthca_state;
u8 status;
mutex_lock(&qp->mutex);
if (qp->state == IB_QPS_RESET) {
qp_attr->qp_state = IB_QPS_RESET;
goto done;
}
mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
if (IS_ERR(mailbox)) {
err = PTR_ERR(mailbox);
goto out;
}
err = mthca_QUERY_QP(dev, qp->qpn, 0, mailbox, &status);
if (err)
goto out;
goto out_mailbox;
if (status) {
mthca_warn(dev, "QUERY_QP returned status %02x\n", status);
err = -EINVAL;
goto out;
goto out_mailbox;
}
qp_param = mailbox->buf;
context = &qp_param->context;
mthca_state = be32_to_cpu(context->flags) >> 28;
qp_attr->qp_state = to_ib_qp_state(mthca_state);
qp->state = to_ib_qp_state(mthca_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);
@ -506,8 +511,11 @@ int mthca_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_m
qp_init_attr->cap = qp_attr->cap;
out:
out_mailbox:
mthca_free_mailbox(dev, mailbox);
out:
mutex_unlock(&qp->mutex);
return err;
}