From b28a308ee7774341312de28405e53a4a30cb7d31 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Mon, 10 Jul 2017 09:22:30 +0300 Subject: [PATCH] nvme-rdma: move tagset allocation to a dedicated routine We always pair tagset allocation with rdma device reference and it shares some code, centralize it with an argument if its an admin or IO tagset. Signed-off-by: Sagi Grimberg Signed-off-by: Christoph Hellwig --- drivers/nvme/host/rdma.c | 131 ++++++++++++++++++++++----------------- 1 file changed, 75 insertions(+), 56 deletions(-) diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index 6ef56500fc9c..3f580c198100 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -646,14 +646,79 @@ out_free_queues: return ret; } +static void nvme_rdma_free_tagset(struct nvme_ctrl *nctrl, bool admin) +{ + struct nvme_rdma_ctrl *ctrl = to_rdma_ctrl(nctrl); + struct blk_mq_tag_set *set = admin ? + &ctrl->admin_tag_set : &ctrl->tag_set; + + blk_mq_free_tag_set(set); + nvme_rdma_dev_put(ctrl->device); +} + +static struct blk_mq_tag_set *nvme_rdma_alloc_tagset(struct nvme_ctrl *nctrl, + bool admin) +{ + struct nvme_rdma_ctrl *ctrl = to_rdma_ctrl(nctrl); + struct blk_mq_tag_set *set; + int ret; + + if (admin) { + set = &ctrl->admin_tag_set; + memset(set, 0, sizeof(*set)); + set->ops = &nvme_rdma_admin_mq_ops; + set->queue_depth = NVME_RDMA_AQ_BLKMQ_DEPTH; + set->reserved_tags = 2; /* connect + keep-alive */ + set->numa_node = NUMA_NO_NODE; + set->cmd_size = sizeof(struct nvme_rdma_request) + + SG_CHUNK_SIZE * sizeof(struct scatterlist); + set->driver_data = ctrl; + set->nr_hw_queues = 1; + set->timeout = ADMIN_TIMEOUT; + } else { + set = &ctrl->tag_set; + memset(set, 0, sizeof(*set)); + set->ops = &nvme_rdma_mq_ops; + set->queue_depth = nctrl->opts->queue_size; + set->reserved_tags = 1; /* fabric connect */ + set->numa_node = NUMA_NO_NODE; + set->flags = BLK_MQ_F_SHOULD_MERGE; + set->cmd_size = sizeof(struct nvme_rdma_request) + + SG_CHUNK_SIZE * sizeof(struct scatterlist); + set->driver_data = ctrl; + set->nr_hw_queues = nctrl->queue_count - 1; + set->timeout = NVME_IO_TIMEOUT; + } + + ret = blk_mq_alloc_tag_set(set); + if (ret) + goto out; + + /* + * We need a reference on the device as long as the tag_set is alive, + * as the MRs in the request structures need a valid ib_device. + */ + ret = nvme_rdma_dev_get(ctrl->device); + if (!ret) { + ret = -EINVAL; + goto out_free_tagset; + } + + return set; + +out_free_tagset: + blk_mq_free_tag_set(set); +out: + return ERR_PTR(ret); +} + static void nvme_rdma_destroy_admin_queue(struct nvme_rdma_ctrl *ctrl) { nvme_rdma_free_qe(ctrl->queues[0].device->dev, &ctrl->async_event_sqe, sizeof(struct nvme_command), DMA_TO_DEVICE); nvme_rdma_stop_and_free_queue(&ctrl->queues[0]); blk_cleanup_queue(ctrl->ctrl.admin_q); - blk_mq_free_tag_set(&ctrl->admin_tag_set); - nvme_rdma_dev_put(ctrl->device); + nvme_rdma_free_tagset(&ctrl->ctrl, true); } static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl) @@ -666,32 +731,12 @@ static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl) ctrl->device = ctrl->queues[0].device; - /* - * We need a reference on the device as long as the tag_set is alive, - * as the MRs in the request structures need a valid ib_device. - */ - error = -EINVAL; - if (!nvme_rdma_dev_get(ctrl->device)) - goto out_free_queue; - ctrl->max_fr_pages = min_t(u32, NVME_RDMA_MAX_SEGMENTS, ctrl->device->dev->attrs.max_fast_reg_page_list_len); - memset(&ctrl->admin_tag_set, 0, sizeof(ctrl->admin_tag_set)); - ctrl->admin_tag_set.ops = &nvme_rdma_admin_mq_ops; - ctrl->admin_tag_set.queue_depth = NVME_RDMA_AQ_BLKMQ_DEPTH; - ctrl->admin_tag_set.reserved_tags = 2; /* connect + keep-alive */ - ctrl->admin_tag_set.numa_node = NUMA_NO_NODE; - ctrl->admin_tag_set.cmd_size = sizeof(struct nvme_rdma_request) + - SG_CHUNK_SIZE * sizeof(struct scatterlist); - ctrl->admin_tag_set.driver_data = ctrl; - ctrl->admin_tag_set.nr_hw_queues = 1; - ctrl->admin_tag_set.timeout = ADMIN_TIMEOUT; - - error = blk_mq_alloc_tag_set(&ctrl->admin_tag_set); - if (error) - goto out_put_dev; - ctrl->ctrl.admin_tagset = &ctrl->admin_tag_set; + ctrl->ctrl.admin_tagset = nvme_rdma_alloc_tagset(&ctrl->ctrl, true); + if (IS_ERR(ctrl->ctrl.admin_tagset)) + goto out_free_queue; ctrl->ctrl.admin_q = blk_mq_init_queue(&ctrl->admin_tag_set); if (IS_ERR(ctrl->ctrl.admin_q)) { @@ -740,9 +785,7 @@ out_cleanup_queue: out_free_tagset: /* disconnect and drain the queue before freeing the tagset */ nvme_rdma_stop_queue(&ctrl->queues[0]); - blk_mq_free_tag_set(&ctrl->admin_tag_set); -out_put_dev: - nvme_rdma_dev_put(ctrl->device); + nvme_rdma_free_tagset(&ctrl->ctrl, true); out_free_queue: nvme_rdma_free_queue(&ctrl->queues[0]); return error; @@ -1644,8 +1687,7 @@ static void __nvme_rdma_remove_ctrl(struct nvme_rdma_ctrl *ctrl, bool shutdown) nvme_uninit_ctrl(&ctrl->ctrl); if (ctrl->ctrl.tagset) { blk_cleanup_queue(ctrl->ctrl.connect_q); - blk_mq_free_tag_set(&ctrl->tag_set); - nvme_rdma_dev_put(ctrl->device); + nvme_rdma_free_tagset(&ctrl->ctrl, false); } nvme_put_ctrl(&ctrl->ctrl); @@ -1765,31 +1807,10 @@ static int nvme_rdma_create_io_queues(struct nvme_rdma_ctrl *ctrl) if (ret) return ret; - /* - * We need a reference on the device as long as the tag_set is alive, - * as the MRs in the request structures need a valid ib_device. - */ - ret = -EINVAL; - if (!nvme_rdma_dev_get(ctrl->device)) + ctrl->ctrl.tagset = nvme_rdma_alloc_tagset(&ctrl->ctrl, true); + if (IS_ERR(ctrl->ctrl.tagset)) goto out_free_io_queues; - memset(&ctrl->tag_set, 0, sizeof(ctrl->tag_set)); - ctrl->tag_set.ops = &nvme_rdma_mq_ops; - ctrl->tag_set.queue_depth = ctrl->ctrl.opts->queue_size; - ctrl->tag_set.reserved_tags = 1; /* fabric connect */ - ctrl->tag_set.numa_node = NUMA_NO_NODE; - ctrl->tag_set.flags = BLK_MQ_F_SHOULD_MERGE; - ctrl->tag_set.cmd_size = sizeof(struct nvme_rdma_request) + - SG_CHUNK_SIZE * sizeof(struct scatterlist); - ctrl->tag_set.driver_data = ctrl; - ctrl->tag_set.nr_hw_queues = ctrl->ctrl.queue_count - 1; - ctrl->tag_set.timeout = NVME_IO_TIMEOUT; - - ret = blk_mq_alloc_tag_set(&ctrl->tag_set); - if (ret) - goto out_put_dev; - ctrl->ctrl.tagset = &ctrl->tag_set; - ctrl->ctrl.connect_q = blk_mq_init_queue(&ctrl->tag_set); if (IS_ERR(ctrl->ctrl.connect_q)) { ret = PTR_ERR(ctrl->ctrl.connect_q); @@ -1805,9 +1826,7 @@ static int nvme_rdma_create_io_queues(struct nvme_rdma_ctrl *ctrl) out_cleanup_connect_q: blk_cleanup_queue(ctrl->ctrl.connect_q); out_free_tag_set: - blk_mq_free_tag_set(&ctrl->tag_set); -out_put_dev: - nvme_rdma_dev_put(ctrl->device); + nvme_rdma_free_tagset(&ctrl->ctrl, false); out_free_io_queues: nvme_rdma_free_io_queues(ctrl); return ret; -- 2.20.1