diff options
| author | Bob Pearson | 2022-04-20 20:40:40 -0500 |
|---|---|---|
| committer | Jason Gunthorpe | 2022-05-09 09:03:45 -0300 |
| commit | 4703b4f0d94a5f887297713a2f6c2916a1ef08fd (patch) | |
| tree | 1f616e7e7d7ef783fec2638b878fdf9a83a351f1 | |
| parent | cde3f5d682279340a75b6ae90944b1c6bd3ae0d8 (diff) | |
RDMA/rxe: Enforce IBA C11-17
Add a counter to keep track of the number of WQs connected to a CQ and
return an error if destroy_cq() is called while the counter is non zero.
Link: https://lore.kernel.org/r/20220421014042.26985-8-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_qp.c | 10 | ||||
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_verbs.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_verbs.h | 1 |
3 files changed, 17 insertions, 0 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_qp.c b/drivers/infiniband/sw/rxe/rxe_qp.c index a8011757784e..22e9b85344c3 100644 --- a/drivers/infiniband/sw/rxe/rxe_qp.c +++ b/drivers/infiniband/sw/rxe/rxe_qp.c @@ -322,6 +322,9 @@ int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd, qp->scq = scq; qp->srq = srq; + atomic_inc(&rcq->num_wq); + atomic_inc(&scq->num_wq); + rxe_qp_init_misc(rxe, qp, init); err = rxe_qp_init_req(rxe, qp, init, udata, uresp); @@ -341,6 +344,9 @@ err2: rxe_queue_cleanup(qp->sq.queue); qp->sq.queue = NULL; err1: + atomic_dec(&rcq->num_wq); + atomic_dec(&scq->num_wq); + qp->pd = NULL; qp->rcq = NULL; qp->scq = NULL; @@ -798,10 +804,14 @@ static void rxe_qp_do_cleanup(struct work_struct *work) if (qp->rq.queue) rxe_queue_cleanup(qp->rq.queue); + atomic_dec(&qp->scq->num_wq); if (qp->scq) rxe_put(qp->scq); + + atomic_dec(&qp->rcq->num_wq); if (qp->rcq) rxe_put(qp->rcq); + if (qp->pd) rxe_put(qp->pd); diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c index 198afb055b06..9d995854a174 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.c +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c @@ -795,6 +795,12 @@ static int rxe_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata) { struct rxe_cq *cq = to_rcq(ibcq); + /* See IBA C11-17: The CI shall return an error if this Verb is + * invoked while a Work Queue is still associated with the CQ. + */ + if (atomic_read(&cq->num_wq)) + return -EINVAL; + rxe_cq_disable(cq); rxe_put(cq); diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/rxe/rxe_verbs.h index 86068d70cd95..ac464e68c923 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.h +++ b/drivers/infiniband/sw/rxe/rxe_verbs.h @@ -67,6 +67,7 @@ struct rxe_cq { bool is_dying; bool is_user; struct tasklet_struct comp_task; + atomic_t num_wq; }; enum wqe_state { |