diff options
| author | Yishai Hadas <yishaih@mellanox.com> | 2016-05-23 12:20:54 (GMT) |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-06-23 15:02:44 (GMT) |
| commit | a9017e232ff9eaabeb50eb89841d99310cfc98dc (patch) | |
| tree | f39391e60b3067a66e61bce385a9b8c43b650699 /drivers | |
| parent | c5f9092936fe88b39e2eddccedeb1c51883fcd31 (diff) | |
| download | linux-a9017e232ff9eaabeb50eb89841d99310cfc98dc.tar.xz | |
IB/core: Extend create QP to get indirection table
Extend create QP to get Receive Work Queue (WQ) indirection table.
QP can be created with external Receive Work Queue indirection table,
in that case it is ready to receive immediately.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index 6b548d7..6916d5c 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -754,6 +754,12 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd, struct ib_qp *qp; int ret; + if (qp_init_attr->rwq_ind_tbl && + (qp_init_attr->recv_cq || + qp_init_attr->srq || qp_init_attr->cap.max_recv_wr || + qp_init_attr->cap.max_recv_sge)) + return ERR_PTR(-EINVAL); + /* * If the callers is using the RDMA API calculate the resources * needed for the RDMA READ/WRITE operations. @@ -771,6 +777,7 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd, qp->real_qp = qp; qp->uobject = NULL; qp->qp_type = qp_init_attr->qp_type; + qp->rwq_ind_tbl = qp_init_attr->rwq_ind_tbl; atomic_set(&qp->usecnt, 0); qp->mrs_used = 0; @@ -788,7 +795,8 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd, qp->srq = NULL; } else { qp->recv_cq = qp_init_attr->recv_cq; - atomic_inc(&qp_init_attr->recv_cq->usecnt); + if (qp_init_attr->recv_cq) + atomic_inc(&qp_init_attr->recv_cq->usecnt); qp->srq = qp_init_attr->srq; if (qp->srq) atomic_inc(&qp_init_attr->srq->usecnt); @@ -799,7 +807,10 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd, qp->xrcd = NULL; atomic_inc(&pd->usecnt); - atomic_inc(&qp_init_attr->send_cq->usecnt); + if (qp_init_attr->send_cq) + atomic_inc(&qp_init_attr->send_cq->usecnt); + if (qp_init_attr->rwq_ind_tbl) + atomic_inc(&qp->rwq_ind_tbl->usecnt); if (qp_init_attr->cap.max_rdma_ctxs) { ret = rdma_rw_init_mrs(qp, qp_init_attr); @@ -1279,6 +1290,7 @@ int ib_destroy_qp(struct ib_qp *qp) struct ib_pd *pd; struct ib_cq *scq, *rcq; struct ib_srq *srq; + struct ib_rwq_ind_table *ind_tbl; int ret; WARN_ON_ONCE(qp->mrs_used > 0); @@ -1293,6 +1305,7 @@ int ib_destroy_qp(struct ib_qp *qp) scq = qp->send_cq; rcq = qp->recv_cq; srq = qp->srq; + ind_tbl = qp->rwq_ind_tbl; if (!qp->uobject) rdma_rw_cleanup_mrs(qp); @@ -1307,6 +1320,8 @@ int ib_destroy_qp(struct ib_qp *qp) atomic_dec(&rcq->usecnt); if (srq) atomic_dec(&srq->usecnt); + if (ind_tbl) + atomic_dec(&ind_tbl->usecnt); } return ret; |