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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 <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sagi Grimberg 2017-07-10 09:22:30 +03:00 коммит произвёл Christoph Hellwig
Родитель 34b6c2315e
Коммит b28a308ee7
1 изменённых файлов: 75 добавлений и 56 удалений
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131
drivers/nvme/host/rdma.c
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@ -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;