[PATCHv2 1/5] nvme: Centralize AEN defines
Keith Busch
keith.busch at intel.com
Fri Oct 20 15:19:20 PDT 2017
All the transports were unnecessarilly duplicating the AEN request
accounting. This defines everything in one place.
Signed-off-by: Keith Busch <keith.busch at intel.com>
---
drivers/nvme/host/core.c | 2 +-
drivers/nvme/host/fc.c | 33 ++++++++++++---------------------
drivers/nvme/host/nvme.h | 1 -
drivers/nvme/host/pci.c | 12 +++---------
drivers/nvme/host/rdma.c | 14 +++-----------
drivers/nvme/target/loop.c | 14 +++-----------
include/linux/nvme.h | 2 ++
7 files changed, 24 insertions(+), 54 deletions(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 7fae42d595d5..2b7fa9ba1e22 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2693,7 +2693,7 @@ EXPORT_SYMBOL_GPL(nvme_complete_async_event);
void nvme_queue_async_events(struct nvme_ctrl *ctrl)
{
- ctrl->event_limit = NVME_NR_AERS;
+ ctrl->event_limit = NVME_AEN_COMMANDS;
queue_work(nvme_wq, &ctrl->async_event_work);
}
EXPORT_SYMBOL_GPL(nvme_queue_async_events);
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index c6c903f1b172..e91e81d9f9fd 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -30,15 +30,6 @@
/* *************************** Data Structures/Defines ****************** */
-/*
- * We handle AEN commands ourselves and don't even let the
- * block layer know about them.
- */
-#define NVME_FC_NR_AEN_COMMANDS 1
-#define NVME_FC_AQ_BLKMQ_DEPTH \
- (NVME_AQ_DEPTH - NVME_FC_NR_AEN_COMMANDS)
-#define AEN_CMDID_BASE (NVME_FC_AQ_BLKMQ_DEPTH + 1)
-
enum nvme_fc_queue_flags {
NVME_FC_Q_CONNECTED = (1 << 0),
};
@@ -165,7 +156,7 @@ struct nvme_fc_ctrl {
u32 iocnt;
wait_queue_head_t ioabort_wait;
- struct nvme_fc_fcp_op aen_ops[NVME_FC_NR_AEN_COMMANDS];
+ struct nvme_fc_fcp_op aen_ops[NVME_AEN_COMMANDS];
struct nvme_ctrl ctrl;
};
@@ -1322,7 +1313,7 @@ nvme_fc_abort_aen_ops(struct nvme_fc_ctrl *ctrl)
unsigned long flags;
int i, ret;
- for (i = 0; i < NVME_FC_NR_AEN_COMMANDS; i++, aen_op++) {
+ for (i = 0; i < NVME_AEN_COMMANDS; i++, aen_op++) {
if (atomic_read(&aen_op->state) != FCPOP_STATE_ACTIVE)
continue;
@@ -1592,7 +1583,7 @@ nvme_fc_init_aen_ops(struct nvme_fc_ctrl *ctrl)
int i, ret;
aen_op = ctrl->aen_ops;
- for (i = 0; i < NVME_FC_NR_AEN_COMMANDS; i++, aen_op++) {
+ for (i = 0; i < NVME_AEN_COMMANDS; i++, aen_op++) {
private = kzalloc(ctrl->lport->ops->fcprqst_priv_sz,
GFP_KERNEL);
if (!private)
@@ -1602,7 +1593,7 @@ nvme_fc_init_aen_ops(struct nvme_fc_ctrl *ctrl)
sqe = &cmdiu->sqe;
ret = __nvme_fc_init_request(ctrl, &ctrl->queues[0],
aen_op, (struct request *)NULL,
- (AEN_CMDID_BASE + i));
+ (NVME_AQ_BLK_MQ_DEPTH + i));
if (ret) {
kfree(private);
return ret;
@@ -1615,7 +1606,7 @@ nvme_fc_init_aen_ops(struct nvme_fc_ctrl *ctrl)
memset(sqe, 0, sizeof(*sqe));
sqe->common.opcode = nvme_admin_async_event;
/* Note: core layer may overwrite the sqe.command_id value */
- sqe->common.command_id = AEN_CMDID_BASE + i;
+ sqe->common.command_id = NVME_AQ_BLK_MQ_DEPTH + i;
}
return 0;
}
@@ -1627,7 +1618,7 @@ nvme_fc_term_aen_ops(struct nvme_fc_ctrl *ctrl)
int i;
aen_op = ctrl->aen_ops;
- for (i = 0; i < NVME_FC_NR_AEN_COMMANDS; i++, aen_op++) {
+ for (i = 0; i < NVME_AEN_COMMANDS; i++, aen_op++) {
if (!aen_op->fcp_req.private)
continue;
@@ -2185,7 +2176,7 @@ nvme_fc_submit_async_event(struct nvme_ctrl *arg, int aer_idx)
bool terminating = false;
blk_status_t ret;
- if (aer_idx > NVME_FC_NR_AEN_COMMANDS)
+ if (aer_idx > NVME_AEN_COMMANDS)
return;
spin_lock_irqsave(&ctrl->lock, flags);
@@ -2445,16 +2436,16 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
* Create the admin queue
*/
- nvme_fc_init_queue(ctrl, 0, NVME_FC_AQ_BLKMQ_DEPTH);
+ nvme_fc_init_queue(ctrl, 0, NVME_AQ_BLK_MQ_DEPTH);
ret = __nvme_fc_create_hw_queue(ctrl, &ctrl->queues[0], 0,
- NVME_FC_AQ_BLKMQ_DEPTH);
+ NVME_AQ_BLK_MQ_DEPTH);
if (ret)
goto out_free_queue;
ret = nvme_fc_connect_admin_queue(ctrl, &ctrl->queues[0],
- NVME_FC_AQ_BLKMQ_DEPTH,
- (NVME_FC_AQ_BLKMQ_DEPTH / 4));
+ NVME_AQ_BLK_MQ_DEPTH,
+ (NVME_AQ_BLK_MQ_DEPTH / 4));
if (ret)
goto out_delete_hw_queue;
@@ -2854,7 +2845,7 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
memset(&ctrl->admin_tag_set, 0, sizeof(ctrl->admin_tag_set));
ctrl->admin_tag_set.ops = &nvme_fc_admin_mq_ops;
- ctrl->admin_tag_set.queue_depth = NVME_FC_AQ_BLKMQ_DEPTH;
+ ctrl->admin_tag_set.queue_depth = NVME_AQ_BLK_MQ_DEPTH - 1;
ctrl->admin_tag_set.reserved_tags = 2; /* fabric connect + Keep-Alive */
ctrl->admin_tag_set.numa_node = NUMA_NO_NODE;
ctrl->admin_tag_set.cmd_size = sizeof(struct nvme_fc_fcp_op) +
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index cb9d93048f3d..331d91d5e191 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -300,7 +300,6 @@ void nvme_remove_namespaces(struct nvme_ctrl *ctrl);
int nvme_sec_submit(void *data, u16 spsp, u8 secp, void *buffer, size_t len,
bool send);
-#define NVME_NR_AERS 1
void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
union nvme_result *res);
void nvme_queue_async_events(struct nvme_ctrl *ctrl);
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 7e4d704ec198..52422c3a106f 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -35,12 +35,6 @@
#define SQ_SIZE(depth) (depth * sizeof(struct nvme_command))
#define CQ_SIZE(depth) (depth * sizeof(struct nvme_completion))
-/*
- * We handle AEN commands ourselves and don't even let the
- * block layer know about them.
- */
-#define NVME_AQ_BLKMQ_DEPTH (NVME_AQ_DEPTH - NVME_NR_AERS)
-
#define SGES_PER_PAGE (PAGE_SIZE / sizeof(struct nvme_sgl_desc))
static int use_threaded_interrupts;
@@ -956,7 +950,7 @@ static inline void nvme_handle_cqe(struct nvme_queue *nvmeq,
* for them but rather special case them here.
*/
if (unlikely(nvmeq->qid == 0 &&
- cqe->command_id >= NVME_AQ_BLKMQ_DEPTH)) {
+ cqe->command_id >= NVME_AQ_BLK_MQ_DEPTH)) {
nvme_complete_async_event(&nvmeq->dev->ctrl,
cqe->status, &cqe->result);
return;
@@ -1057,7 +1051,7 @@ static void nvme_pci_submit_async_event(struct nvme_ctrl *ctrl, int aer_idx)
memset(&c, 0, sizeof(c));
c.common.opcode = nvme_admin_async_event;
- c.common.command_id = NVME_AQ_BLKMQ_DEPTH + aer_idx;
+ c.common.command_id = NVME_AQ_BLK_MQ_DEPTH + aer_idx;
spin_lock_irq(&nvmeq->q_lock);
__nvme_submit_cmd(nvmeq, &c);
@@ -1528,7 +1522,7 @@ static int nvme_alloc_admin_tags(struct nvme_dev *dev)
* Subtract one to leave an empty queue entry for 'Full Queue'
* condition. See NVM-Express 1.2 specification, section 4.1.2.
*/
- dev->admin_tagset.queue_depth = NVME_AQ_BLKMQ_DEPTH - 1;
+ dev->admin_tagset.queue_depth = NVME_AQ_BLK_MQ_DEPTH - 1;
dev->admin_tagset.timeout = ADMIN_TIMEOUT;
dev->admin_tagset.numa_node = dev_to_node(dev->dev);
dev->admin_tagset.cmd_size = nvme_pci_cmd_size(dev, false);
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index a5577e06a620..f35992b1c48b 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -41,14 +41,6 @@
#define NVME_RDMA_MAX_INLINE_SEGMENTS 1
-/*
- * We handle AEN commands ourselves and don't even let the
- * block layer know about them.
- */
-#define NVME_RDMA_NR_AEN_COMMANDS 1
-#define NVME_RDMA_AQ_BLKMQ_DEPTH \
- (NVME_AQ_DEPTH - NVME_RDMA_NR_AEN_COMMANDS)
-
struct nvme_rdma_device {
struct ib_device *dev;
struct ib_pd *pd;
@@ -691,7 +683,7 @@ static struct blk_mq_tag_set *nvme_rdma_alloc_tagset(struct nvme_ctrl *nctrl,
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->queue_depth = NVME_AQ_BLK_MQ_DEPTH - 1;
set->reserved_tags = 2; /* connect + keep-alive */
set->numa_node = NUMA_NO_NODE;
set->cmd_size = sizeof(struct nvme_rdma_request) +
@@ -1319,7 +1311,7 @@ static void nvme_rdma_submit_async_event(struct nvme_ctrl *arg, int aer_idx)
memset(cmd, 0, sizeof(*cmd));
cmd->common.opcode = nvme_admin_async_event;
- cmd->common.command_id = NVME_RDMA_AQ_BLKMQ_DEPTH;
+ cmd->common.command_id = NVME_AQ_BLK_MQ_DEPTH;
cmd->common.flags |= NVME_CMD_SGL_METABUF;
nvme_rdma_set_sg_null(cmd);
@@ -1381,7 +1373,7 @@ static int __nvme_rdma_recv_done(struct ib_cq *cq, struct ib_wc *wc, int tag)
* for them but rather special case them here.
*/
if (unlikely(nvme_rdma_queue_idx(queue) == 0 &&
- cqe->command_id >= NVME_RDMA_AQ_BLKMQ_DEPTH))
+ cqe->command_id >= NVME_AQ_BLK_MQ_DEPTH))
nvme_complete_async_event(&queue->ctrl->ctrl, cqe->status,
&cqe->result);
else
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index c56354e1e4c6..fc2856943d89 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -23,14 +23,6 @@
#define NVME_LOOP_MAX_SEGMENTS 256
-/*
- * We handle AEN commands ourselves and don't even let the
- * block layer know about them.
- */
-#define NVME_LOOP_NR_AEN_COMMANDS 1
-#define NVME_LOOP_AQ_BLKMQ_DEPTH \
- (NVME_AQ_DEPTH - NVME_LOOP_NR_AEN_COMMANDS)
-
struct nvme_loop_iod {
struct nvme_request nvme_req;
struct nvme_command cmd;
@@ -113,7 +105,7 @@ static void nvme_loop_queue_response(struct nvmet_req *req)
* for them but rather special case them here.
*/
if (unlikely(nvme_loop_queue_idx(queue) == 0 &&
- cqe->command_id >= NVME_LOOP_AQ_BLKMQ_DEPTH)) {
+ cqe->command_id >= NVME_AQ_BLK_MQ_DEPTH)) {
nvme_complete_async_event(&queue->ctrl->ctrl, cqe->status,
&cqe->result);
} else {
@@ -201,7 +193,7 @@ static void nvme_loop_submit_async_event(struct nvme_ctrl *arg, int aer_idx)
memset(&iod->cmd, 0, sizeof(iod->cmd));
iod->cmd.common.opcode = nvme_admin_async_event;
- iod->cmd.common.command_id = NVME_LOOP_AQ_BLKMQ_DEPTH;
+ iod->cmd.common.command_id = NVME_AQ_BLK_MQ_DEPTH;
iod->cmd.common.flags |= NVME_CMD_SGL_METABUF;
if (!nvmet_req_init(&iod->req, &queue->nvme_cq, &queue->nvme_sq,
@@ -357,7 +349,7 @@ static int nvme_loop_configure_admin_queue(struct nvme_loop_ctrl *ctrl)
memset(&ctrl->admin_tag_set, 0, sizeof(ctrl->admin_tag_set));
ctrl->admin_tag_set.ops = &nvme_loop_admin_mq_ops;
- ctrl->admin_tag_set.queue_depth = NVME_LOOP_AQ_BLKMQ_DEPTH;
+ ctrl->admin_tag_set.queue_depth = NVME_AQ_BLK_MQ_DEPTH - 1;
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_loop_iod) +
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 9310ce77d8e1..9a3878c2b2ad 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -90,6 +90,8 @@ enum {
};
#define NVME_AQ_DEPTH 32
+#define NVME_AEN_COMMANDS 1
+#define NVME_AQ_BLK_MQ_DEPTH (NVME_AQ_DEPTH - NVME_AEN_COMMANDS)
enum {
NVME_REG_CAP = 0x0000, /* Controller Capabilities */
--
2.13.6
More information about the Linux-nvme
mailing list