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[PATCH] IB: really reset QPs

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When we modify a QP to the RESET state, completely clean up the QP
so that it is really and truly reset.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Roland Dreier 2005-09-07 09:43:23 -07:00 committed by Roland Dreier
parent 0b2b35f681
commit c9fe2b3287
1 changed files with 32 additions and 12 deletions
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44
drivers/infiniband/hw/mthca/mthca_qp.c
View file

@ -220,6 +220,16 @@ static void *get_send_wqe(struct mthca_qp *qp, int n)
(PAGE_SIZE - 1));
}
static void mthca_wq_init(struct mthca_wq *wq)
{
spin_lock_init(&wq->lock);
wq->next_ind = 0;
wq->last_comp = wq->max - 1;
wq->head = 0;
wq->tail = 0;
wq->last = NULL;
}
void mthca_qp_event(struct mthca_dev *dev, u32 qpn,
enum ib_event_type event_type)
{
@ -833,8 +843,8 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
store_attrs(to_msqp(qp), attr, attr_mask);
/*
* If we are moving QP0 to RTR, bring the IB link up; if we
* are moving QP0 to RESET or ERROR, bring the link back down.
* If we moved QP0 to RTR, bring the IB link up; if we moved
* QP0 to RESET or ERROR, bring the link back down.
*/
if (is_qp0(dev, qp)) {
if (cur_state != IB_QPS_RTR &&
@ -848,6 +858,26 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
mthca_CLOSE_IB(dev, to_msqp(qp)->port, &status);
}
/*
* If we moved a kernel QP to RESET, clean up all old CQ
* entries and reinitialize the QP.
*/
if (!err && new_state == IB_QPS_RESET && !qp->ibqp.uobject) {
mthca_cq_clean(dev, to_mcq(qp->ibqp.send_cq)->cqn, qp->qpn,
qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
if (qp->ibqp.send_cq != qp->ibqp.recv_cq)
mthca_cq_clean(dev, to_mcq(qp->ibqp.recv_cq)->cqn, qp->qpn,
qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
mthca_wq_init(&qp->sq);
mthca_wq_init(&qp->rq);
if (mthca_is_memfree(dev)) {
*qp->sq.db = 0;
*qp->rq.db = 0;
}
}
return err;
}
@ -1003,16 +1033,6 @@ static void mthca_free_memfree(struct mthca_dev *dev,
}
}
static void mthca_wq_init(struct mthca_wq* wq)
{
spin_lock_init(&wq->lock);
wq->next_ind = 0;
wq->last_comp = wq->max - 1;
wq->head = 0;
wq->tail = 0;
wq->last = NULL;
}
static int mthca_alloc_qp_common(struct mthca_dev *dev,
struct mthca_pd *pd,
struct mthca_cq *send_cq,