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author | Roland Dreier <roland@eddore.topspincom.com> | 2005-09-07 09:43:23 -0700 |
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committer | Roland Dreier <rolandd@cisco.com> | 2005-09-07 09:48:52 -0700 |
commit | c9fe2b3287498b80781284306064104ef9c8a31a (patch) | |
tree | 22fa67f8adc81429719a12e5e6a79ce19094ffb6 | |
parent | 0b2b35f68140ceeb1b78ef85680198e63ebc8649 (diff) | |
download | kernel_samsung_smdk4412-c9fe2b3287498b80781284306064104ef9c8a31a.zip kernel_samsung_smdk4412-c9fe2b3287498b80781284306064104ef9c8a31a.tar.gz kernel_samsung_smdk4412-c9fe2b3287498b80781284306064104ef9c8a31a.tar.bz2 |
[PATCH] IB: really reset QPs
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>
-rw-r--r-- | drivers/infiniband/hw/mthca/mthca_qp.c | 44 |
1 files changed, 32 insertions, 12 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c index 0164b84..c753f73 100644 --- a/drivers/infiniband/hw/mthca/mthca_qp.c +++ b/drivers/infiniband/hw/mthca/mthca_qp.c @@ -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, |