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authorHåkon Bugge <haakon.bugge@oracle.com>2021-06-22 16:39:56 +0300
committerJason Gunthorpe <jgg@nvidia.com>2021-06-24 21:29:53 +0300
commitdc70f7c3ed34b081c02a611591c5079c53b771b8 (patch)
tree125754070ef9eb19a71ee11e3ef604dbec5a1574 /drivers/infiniband
parent7ae61c5f16671ecaf23526feb6892c8249d0c2d7 (diff)
downloadlinux-dc70f7c3ed34b081c02a611591c5079c53b771b8.tar.xz
RDMA/cma: Remove unnecessary INIT->INIT transition
In rdma_create_qp(), a connected QP will be transitioned to the INIT state. Afterwards, the QP will be transitioned to the RTR state by the cma_modify_qp_rtr() function. But this function starts by performing an ib_modify_qp() to the INIT state again, before another ib_modify_qp() is performed to transition the QP to the RTR state. Hence, there is no need to transition the QP to the INIT state in rdma_create_qp(). Link: https://lore.kernel.org/r/1624369197-24578-2-git-send-email-haakon.bugge@oracle.com Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/core/cma.c17
1 files changed, 1 insertions, 16 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index ab148a696c0c..e3f52c516094 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -926,25 +926,12 @@ static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp)
return ret;
}
-static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp)
-{
- struct ib_qp_attr qp_attr;
- int qp_attr_mask, ret;
-
- qp_attr.qp_state = IB_QPS_INIT;
- ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask);
- if (ret)
- return ret;
-
- return ib_modify_qp(qp, &qp_attr, qp_attr_mask);
-}
-
int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd,
struct ib_qp_init_attr *qp_init_attr)
{
struct rdma_id_private *id_priv;
struct ib_qp *qp;
- int ret;
+ int ret = 0;
id_priv = container_of(id, struct rdma_id_private, id);
if (id->device != pd->device) {
@@ -961,8 +948,6 @@ int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd,
if (id->qp_type == IB_QPT_UD)
ret = cma_init_ud_qp(id_priv, qp);
- else
- ret = cma_init_conn_qp(id_priv, qp);
if (ret)
goto out_destroy;