hw/rdma: Add Query QP operation

This operation is needed by rdma devices - implement it.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>

diff --git a/hw/rdma/rdma_backend.c b/hw/rdma/rdma_backend.c
index e306fba534493ac30b4cf97ea4f74aa0e711f8a1..0beed77c277389a9d5768f866c5d91b21c3833a4 100644 (file)
--- a/hw/rdma/rdma_backend.c
+++ b/hw/rdma/rdma_backend.c
@@ -646,6 +646,18 @@ int rdma_backend_qp_state_rts(RdmaBackendQP *qp, uint8_t qp_type,
     return 0;
 }
 
+int rdma_backend_query_qp(RdmaBackendQP *qp, struct ibv_qp_attr *attr,
+                          int attr_mask, struct ibv_qp_init_attr *init_attr)
+{
+    if (!qp->ibqp) {
+        pr_dbg("QP1\n");
+        attr->qp_state = IBV_QPS_RTS;
+        return 0;
+    }
+
+    return ibv_query_qp(qp->ibqp, attr, attr_mask, init_attr);
+}
+
 void rdma_backend_destroy_qp(RdmaBackendQP *qp)
 {
     if (qp->ibqp) {

diff --git a/hw/rdma/rdma_backend.h b/hw/rdma/rdma_backend.h
index 68f2b05ca7501d9f535717dc693e0fcc70ce02f3..36218d199051330a0940f9a0d422c0a39514745b 100644 (file)
--- a/hw/rdma/rdma_backend.h
+++ b/hw/rdma/rdma_backend.h
@@ -83,6 +83,8 @@ int rdma_backend_qp_state_rtr(RdmaBackendDev *backend_dev, RdmaBackendQP *qp,
                               bool use_qkey);
 int rdma_backend_qp_state_rts(RdmaBackendQP *qp, uint8_t qp_type,
                               uint32_t sq_psn, uint32_t qkey, bool use_qkey);
+int rdma_backend_query_qp(RdmaBackendQP *qp, struct ibv_qp_attr *attr,
+                          int attr_mask, struct ibv_qp_init_attr *init_attr);
 void rdma_backend_destroy_qp(RdmaBackendQP *qp);
 
 void rdma_backend_post_send(RdmaBackendDev *backend_dev,

diff --git a/hw/rdma/rdma_rm.c b/hw/rdma/rdma_rm.c
index b5fc45ddab1ffebed88f614927e30dc1a5f3ca38..43f73adecf937a58fec88905179857d176bfea33 100644 (file)
--- a/hw/rdma/rdma_rm.c
+++ b/hw/rdma/rdma_rm.c
@@ -453,6 +453,24 @@ int rdma_rm_modify_qp(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
     return 0;
 }
 
+int rdma_rm_query_qp(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
+                     uint32_t qp_handle, struct ibv_qp_attr *attr,
+                     int attr_mask, struct ibv_qp_init_attr *init_attr)
+{
+    RdmaRmQP *qp;
+
+    pr_dbg("qpn=%d\n", qp_handle);
+
+    qp = rdma_rm_get_qp(dev_res, qp_handle);
+    if (!qp) {
+        return -EINVAL;
+    }
+
+    pr_dbg("qp_type=%d\n", qp->qp_type);
+
+    return rdma_backend_query_qp(&qp->backend_qp, attr, attr_mask, init_attr);
+}
+
 void rdma_rm_dealloc_qp(RdmaDeviceResources *dev_res, uint32_t qp_handle)
 {
     RdmaRmQP *qp;

diff --git a/hw/rdma/rdma_rm.h b/hw/rdma/rdma_rm.h
index be95c1b0f417eed370de85d49505957d1e1da5d2..0528c1972b52af31e6a4b21d9690bf30782976ed 100644 (file)
--- a/hw/rdma/rdma_rm.h
+++ b/hw/rdma/rdma_rm.h
@@ -59,6 +59,9 @@ int rdma_rm_modify_qp(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
                       union ibv_gid *dgid, uint32_t dqpn,
                       enum ibv_qp_state qp_state, uint32_t qkey,
                       uint32_t rq_psn, uint32_t sq_psn);
+int rdma_rm_query_qp(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
+                     uint32_t qp_handle, struct ibv_qp_attr *attr,
+                     int attr_mask, struct ibv_qp_init_attr *init_attr);
 void rdma_rm_dealloc_qp(RdmaDeviceResources *dev_res, uint32_t qp_handle);
 
 int rdma_rm_alloc_cqe_ctx(RdmaDeviceResources *dev_res, uint32_t *cqe_ctx_id,