[PATCH v3 1/2] nvme-rdma: refactor nvme_rdma_alloc_queue() to take a queue pointer

[Surabhi Gogte <sgogte@purestorage.com>]

Callers are responsible for initializing queue->ctrl and queue->queue_size
before calling nvme_rdma_alloc_queue(), which now derives ctrl and idx
from the queue pointer directly. This removes redundant assignments inside
the function and simplifies the interface.

Signed-off-by: Surabhi Gogte <sgogte@purestorage.com>
---
 drivers/nvme/host/rdma.c | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 6909e3542794..6b0b0a3dea62 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -566,16 +566,14 @@ static int nvme_rdma_create_queue_ib(struct nvme_rdma_queue *queue)
 	return ret;
 }
 
-static int nvme_rdma_alloc_queue(struct nvme_rdma_ctrl *ctrl,
-		int idx, size_t queue_size)
+static int nvme_rdma_alloc_queue(struct nvme_rdma_queue *queue)
 {
-	struct nvme_rdma_queue *queue;
+	struct nvme_rdma_ctrl *ctrl = queue->ctrl;
+	int idx = nvme_rdma_queue_idx(queue);
 	struct sockaddr *src_addr = NULL;
 	int ret;
 
-	queue = &ctrl->queues[idx];
 	mutex_init(&queue->queue_lock);
-	queue->ctrl = ctrl;
 	if (idx && ctrl->ctrl.max_integrity_segments)
 		queue->pi_support = true;
 	else
@@ -587,8 +585,6 @@ static int nvme_rdma_alloc_queue(struct nvme_rdma_ctrl *ctrl,
 	else
 		queue->cmnd_capsule_len = sizeof(struct nvme_command);
 
-	queue->queue_size = queue_size;
-
 	queue->cm_id = rdma_create_id(&init_net, nvme_rdma_cm_handler, queue,
 			RDMA_PS_TCP, IB_QPT_RC);
 	if (IS_ERR(queue->cm_id)) {
@@ -736,8 +732,9 @@ static int nvme_rdma_alloc_io_queues(struct nvme_rdma_ctrl *ctrl)
 
 	nvmf_set_io_queues(opts, nr_io_queues, ctrl->io_queues);
 	for (i = 1; i < ctrl->ctrl.queue_count; i++) {
-		ret = nvme_rdma_alloc_queue(ctrl, i,
-				ctrl->ctrl.sqsize + 1);
+		ctrl->queues[i].ctrl = ctrl;
+		ctrl->queues[i].queue_size = ctrl->ctrl.sqsize + 1;
+		ret = nvme_rdma_alloc_queue(&ctrl->queues[i]);
 		if (ret)
 			goto out_free_queues;
 	}
@@ -783,7 +780,9 @@ static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl,
 	bool pi_capable = false;
 	int error;
 
-	error = nvme_rdma_alloc_queue(ctrl, 0, NVME_AQ_DEPTH);
+	ctrl->queues[0].ctrl = ctrl;
+	ctrl->queues[0].queue_size = NVME_AQ_DEPTH;
+	error = nvme_rdma_alloc_queue(&ctrl->queues[0]);
 	if (error)
 		return error;
 
-- 
2.54.0