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authorJens Axboe <axboe@kernel.dk>2020-10-23 07:29:08 -0600
committerJens Axboe <axboe@kernel.dk>2020-10-23 07:29:08 -0600
commitddc62910b48b8208c09ddee6aea6fd3568297a51 (patch)
tree535f7762f79ec10d1eb06cf2b5233975ff14c5c9 /drivers/nvme
parentfd78874b710f42ea46feaefd7c918893c8567e8a (diff)
parentf673714a1247669bc90322dfb14a5cf553833796 (diff)
Merge tag 'nvme-5.10-2020-10-23' of git://git.infradead.org/nvme into block-5.10
Pull NVMe fixes from Christoph: "nvme fixes for 5.10 - rdma error handling fixes (Chao Leng) - fc error handling and reconnect fixes (James Smart) - fix the qid displace when tracing ioctl command (Keith Busch) - don't use BLK_MQ_REQ_NOWAIT for passthru (Chaitanya Kulkarni) - fix MTDT for passthru (Logan Gunthorpe) - blacklist Write Same on more devices (Kai-Heng Feng) - fix an uninitialized work struct (zhenwei pi)" * tag 'nvme-5.10-2020-10-23' of git://git.infradead.org/nvme: nvme-fc: shorten reconnect delay if possible for FC nvme-fc: wait for queues to freeze before calling update_hr_hw_queues nvme-fc: fix error loop in create_hw_io_queues nvme-fc: fix io timeout to abort I/O nvmet: don't use BLK_MQ_REQ_NOWAIT for passthru nvmet: cleanup nvmet_passthru_map_sg() nvmet: limit passthru MTDS by BIO_MAX_PAGES nvmet: fix uninitialized work for zero kato nvme-pci: disable Write Zeroes on Sandisk Skyhawk nvme: use queuedata for nvme_req_qid nvme-rdma: fix crash due to incorrect cqe nvme-rdma: fix crash when connect rejected
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/fc.c138
-rw-r--r--drivers/nvme/host/nvme.h2
-rw-r--r--drivers/nvme/host/pci.c2
-rw-r--r--drivers/nvme/host/rdma.c6
-rw-r--r--drivers/nvme/target/core.c3
-rw-r--r--drivers/nvme/target/passthru.c18
6 files changed, 115 insertions, 54 deletions
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index e2e09e25c056..3c002bdcace3 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -26,6 +26,10 @@ enum nvme_fc_queue_flags {
};
#define NVME_FC_DEFAULT_DEV_LOSS_TMO 60 /* seconds */
+#define NVME_FC_DEFAULT_RECONNECT_TMO 2 /* delay between reconnects
+ * when connected and a
+ * connection failure.
+ */
struct nvme_fc_queue {
struct nvme_fc_ctrl *ctrl;
@@ -1837,8 +1841,10 @@ __nvme_fc_abort_op(struct nvme_fc_ctrl *ctrl, struct nvme_fc_fcp_op *op)
opstate = atomic_xchg(&op->state, FCPOP_STATE_ABORTED);
if (opstate != FCPOP_STATE_ACTIVE)
atomic_set(&op->state, opstate);
- else if (test_bit(FCCTRL_TERMIO, &ctrl->flags))
+ else if (test_bit(FCCTRL_TERMIO, &ctrl->flags)) {
+ op->flags |= FCOP_FLAGS_TERMIO;
ctrl->iocnt++;
+ }
spin_unlock_irqrestore(&ctrl->lock, flags);
if (opstate != FCPOP_STATE_ACTIVE)
@@ -1874,7 +1880,8 @@ __nvme_fc_fcpop_chk_teardowns(struct nvme_fc_ctrl *ctrl,
if (opstate == FCPOP_STATE_ABORTED) {
spin_lock_irqsave(&ctrl->lock, flags);
- if (test_bit(FCCTRL_TERMIO, &ctrl->flags)) {
+ if (test_bit(FCCTRL_TERMIO, &ctrl->flags) &&
+ op->flags & FCOP_FLAGS_TERMIO) {
if (!--ctrl->iocnt)
wake_up(&ctrl->ioabort_wait);
}
@@ -2314,7 +2321,7 @@ nvme_fc_create_hw_io_queues(struct nvme_fc_ctrl *ctrl, u16 qsize)
return 0;
delete_queues:
- for (; i >= 0; i--)
+ for (; i > 0; i--)
__nvme_fc_delete_hw_queue(ctrl, &ctrl->queues[i], i);
return ret;
}
@@ -2433,7 +2440,7 @@ nvme_fc_error_recovery(struct nvme_fc_ctrl *ctrl, char *errmsg)
return;
dev_warn(ctrl->ctrl.device,
- "NVME-FC{%d}: transport association error detected: %s\n",
+ "NVME-FC{%d}: transport association event: %s\n",
ctrl->cnum, errmsg);
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: resetting controller\n", ctrl->cnum);
@@ -2446,15 +2453,20 @@ nvme_fc_timeout(struct request *rq, bool reserved)
{
struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
struct nvme_fc_ctrl *ctrl = op->ctrl;
+ struct nvme_fc_cmd_iu *cmdiu = &op->cmd_iu;
+ struct nvme_command *sqe = &cmdiu->sqe;
/*
- * we can't individually ABTS an io without affecting the queue,
- * thus killing the queue, and thus the association.
- * So resolve by performing a controller reset, which will stop
- * the host/io stack, terminate the association on the link,
- * and recreate an association on the link.
+ * Attempt to abort the offending command. Command completion
+ * will detect the aborted io and will fail the connection.
*/
- nvme_fc_error_recovery(ctrl, "io timeout error");
+ dev_info(ctrl->ctrl.device,
+ "NVME-FC{%d.%d}: io timeout: opcode %d fctype %d w10/11: "
+ "x%08x/x%08x\n",
+ ctrl->cnum, op->queue->qnum, sqe->common.opcode,
+ sqe->connect.fctype, sqe->common.cdw10, sqe->common.cdw11);
+ if (__nvme_fc_abort_op(ctrl, op))
+ nvme_fc_error_recovery(ctrl, "io timeout abort failed");
/*
* the io abort has been initiated. Have the reset timer
@@ -2726,6 +2738,7 @@ nvme_fc_complete_rq(struct request *rq)
struct nvme_fc_ctrl *ctrl = op->ctrl;
atomic_set(&op->state, FCPOP_STATE_IDLE);
+ op->flags &= ~FCOP_FLAGS_TERMIO;
nvme_fc_unmap_data(ctrl, rq, op);
nvme_complete_rq(rq);
@@ -2876,11 +2889,14 @@ nvme_fc_recreate_io_queues(struct nvme_fc_ctrl *ctrl)
if (ret)
goto out_delete_hw_queues;
- if (prior_ioq_cnt != nr_io_queues)
+ if (prior_ioq_cnt != nr_io_queues) {
dev_info(ctrl->ctrl.device,
"reconnect: revising io queue count from %d to %d\n",
prior_ioq_cnt, nr_io_queues);
- blk_mq_update_nr_hw_queues(&ctrl->tag_set, nr_io_queues);
+ nvme_wait_freeze(&ctrl->ctrl);
+ blk_mq_update_nr_hw_queues(&ctrl->tag_set, nr_io_queues);
+ nvme_unfreeze(&ctrl->ctrl);
+ }
return 0;
@@ -3090,26 +3106,19 @@ out_free_queue:
return ret;
}
+
/*
- * This routine stops operation of the controller on the host side.
- * On the host os stack side: Admin and IO queues are stopped,
- * outstanding ios on them terminated via FC ABTS.
- * On the link side: the association is terminated.
+ * This routine runs through all outstanding commands on the association
+ * and aborts them. This routine is typically be called by the
+ * delete_association routine. It is also called due to an error during
+ * reconnect. In that scenario, it is most likely a command that initializes
+ * the controller, including fabric Connect commands on io queues, that
+ * may have timed out or failed thus the io must be killed for the connect
+ * thread to see the error.
*/
static void
-nvme_fc_delete_association(struct nvme_fc_ctrl *ctrl)
+__nvme_fc_abort_outstanding_ios(struct nvme_fc_ctrl *ctrl, bool start_queues)
{
- struct nvmefc_ls_rcv_op *disls = NULL;
- unsigned long flags;
-
- if (!test_and_clear_bit(ASSOC_ACTIVE, &ctrl->flags))
- return;
-
- spin_lock_irqsave(&ctrl->lock, flags);
- set_bit(FCCTRL_TERMIO, &ctrl->flags);
- ctrl->iocnt = 0;
- spin_unlock_irqrestore(&ctrl->lock, flags);
-
/*
* If io queues are present, stop them and terminate all outstanding
* ios on them. As FC allocates FC exchange for each io, the
@@ -3127,6 +3136,8 @@ nvme_fc_delete_association(struct nvme_fc_ctrl *ctrl)
blk_mq_tagset_busy_iter(&ctrl->tag_set,
nvme_fc_terminate_exchange, &ctrl->ctrl);
blk_mq_tagset_wait_completed_request(&ctrl->tag_set);
+ if (start_queues)
+ nvme_start_queues(&ctrl->ctrl);
}
/*
@@ -3143,13 +3154,34 @@ nvme_fc_delete_association(struct nvme_fc_ctrl *ctrl)
/*
* clean up the admin queue. Same thing as above.
- * use blk_mq_tagset_busy_itr() and the transport routine to
- * terminate the exchanges.
*/
blk_mq_quiesce_queue(ctrl->ctrl.admin_q);
blk_mq_tagset_busy_iter(&ctrl->admin_tag_set,
nvme_fc_terminate_exchange, &ctrl->ctrl);
blk_mq_tagset_wait_completed_request(&ctrl->admin_tag_set);
+}
+
+/*
+ * This routine stops operation of the controller on the host side.
+ * On the host os stack side: Admin and IO queues are stopped,
+ * outstanding ios on them terminated via FC ABTS.
+ * On the link side: the association is terminated.
+ */
+static void
+nvme_fc_delete_association(struct nvme_fc_ctrl *ctrl)
+{
+ struct nvmefc_ls_rcv_op *disls = NULL;
+ unsigned long flags;
+
+ if (!test_and_clear_bit(ASSOC_ACTIVE, &ctrl->flags))
+ return;
+
+ spin_lock_irqsave(&ctrl->lock, flags);
+ set_bit(FCCTRL_TERMIO, &ctrl->flags);
+ ctrl->iocnt = 0;
+ spin_unlock_irqrestore(&ctrl->lock, flags);
+
+ __nvme_fc_abort_outstanding_ios(ctrl, false);
/* kill the aens as they are a separate path */
nvme_fc_abort_aen_ops(ctrl);
@@ -3263,22 +3295,27 @@ static void
__nvme_fc_terminate_io(struct nvme_fc_ctrl *ctrl)
{
/*
- * if state is connecting - the error occurred as part of a
- * reconnect attempt. The create_association error paths will
- * clean up any outstanding io.
- *
- * if it's a different state - ensure all pending io is
- * terminated. Given this can delay while waiting for the
- * aborted io to return, we recheck adapter state below
- * before changing state.
+ * if state is CONNECTING - the error occurred as part of a
+ * reconnect attempt. Abort any ios on the association and
+ * let the create_association error paths resolve things.
*/
- if (ctrl->ctrl.state != NVME_CTRL_CONNECTING) {
- nvme_stop_keep_alive(&ctrl->ctrl);
-
- /* will block will waiting for io to terminate */
- nvme_fc_delete_association(ctrl);
+ if (ctrl->ctrl.state == NVME_CTRL_CONNECTING) {
+ __nvme_fc_abort_outstanding_ios(ctrl, true);
+ return;
}
+ /*
+ * For any other state, kill the association. As this routine
+ * is a common io abort routine for resetting and such, after
+ * the association is terminated, ensure that the state is set
+ * to CONNECTING.
+ */
+
+ nvme_stop_keep_alive(&ctrl->ctrl);
+
+ /* will block will waiting for io to terminate */
+ nvme_fc_delete_association(ctrl);
+
if (ctrl->ctrl.state != NVME_CTRL_CONNECTING &&
!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING))
dev_err(ctrl->ctrl.device,
@@ -3403,7 +3440,7 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
{
struct nvme_fc_ctrl *ctrl;
unsigned long flags;
- int ret, idx;
+ int ret, idx, ctrl_loss_tmo;
if (!(rport->remoteport.port_role &
(FC_PORT_ROLE_NVME_DISCOVERY | FC_PORT_ROLE_NVME_TARGET))) {
@@ -3429,6 +3466,19 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
goto out_free_ctrl;
}
+ /*
+ * if ctrl_loss_tmo is being enforced and the default reconnect delay
+ * is being used, change to a shorter reconnect delay for FC.
+ */
+ if (opts->max_reconnects != -1 &&
+ opts->reconnect_delay == NVMF_DEF_RECONNECT_DELAY &&
+ opts->reconnect_delay > NVME_FC_DEFAULT_RECONNECT_TMO) {
+ ctrl_loss_tmo = opts->max_reconnects * opts->reconnect_delay;
+ opts->reconnect_delay = NVME_FC_DEFAULT_RECONNECT_TMO;
+ opts->max_reconnects = DIV_ROUND_UP(ctrl_loss_tmo,
+ opts->reconnect_delay);
+ }
+
ctrl->ctrl.opts = opts;
ctrl->ctrl.nr_reconnects = 0;
if (lport->dev)
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index e7c88b40f5bb..cc111136a981 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -176,7 +176,7 @@ static inline struct nvme_request *nvme_req(struct request *req)
static inline u16 nvme_req_qid(struct request *req)
{
- if (!req->rq_disk)
+ if (!req->q->queuedata)
return 0;
return blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(req)) + 1;
}
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index e5b02242f3ca..df8f3612107f 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3185,6 +3185,8 @@ static const struct pci_device_id nvme_id_table[] = {
NVME_QUIRK_IGNORE_DEV_SUBNQN, },
{ PCI_DEVICE(0x1c5c, 0x1504), /* SK Hynix PC400 */
.driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, },
+ { PCI_DEVICE(0x15b7, 0x2001), /* Sandisk Skyhawk */
+ .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, },
{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2001),
.driver_data = NVME_QUIRK_SINGLE_VECTOR },
{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2003) },
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 9e378d0a0c01..aad829a2b50d 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -1730,10 +1730,11 @@ static void nvme_rdma_process_nvme_rsp(struct nvme_rdma_queue *queue,
req->result = cqe->result;
if (wc->wc_flags & IB_WC_WITH_INVALIDATE) {
- if (unlikely(wc->ex.invalidate_rkey != req->mr->rkey)) {
+ if (unlikely(!req->mr ||
+ wc->ex.invalidate_rkey != req->mr->rkey)) {
dev_err(queue->ctrl->ctrl.device,
"Bogus remote invalidation for rkey %#x\n",
- req->mr->rkey);
+ req->mr ? req->mr->rkey : 0);
nvme_rdma_error_recovery(queue->ctrl);
}
} else if (req->mr) {
@@ -1926,7 +1927,6 @@ static int nvme_rdma_cm_handler(struct rdma_cm_id *cm_id,
complete(&queue->cm_done);
return 0;
case RDMA_CM_EVENT_REJECTED:
- nvme_rdma_destroy_queue_ib(queue);
cm_error = nvme_rdma_conn_rejected(queue, ev);
break;
case RDMA_CM_EVENT_ROUTE_ERROR:
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 25d62d867563..aafcbc424b7a 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -1126,7 +1126,8 @@ static void nvmet_start_ctrl(struct nvmet_ctrl *ctrl)
* in case a host died before it enabled the controller. Hence, simply
* reset the keep alive timer when the controller is enabled.
*/
- mod_delayed_work(system_wq, &ctrl->ka_work, ctrl->kato * HZ);
+ if (ctrl->kato)
+ mod_delayed_work(system_wq, &ctrl->ka_work, ctrl->kato * HZ);
}
static void nvmet_clear_ctrl(struct nvmet_ctrl *ctrl)
diff --git a/drivers/nvme/target/passthru.c b/drivers/nvme/target/passthru.c
index 56c571052216..8ee94f056898 100644
--- a/drivers/nvme/target/passthru.c
+++ b/drivers/nvme/target/passthru.c
@@ -26,7 +26,7 @@ static u16 nvmet_passthru_override_id_ctrl(struct nvmet_req *req)
struct nvme_ctrl *pctrl = ctrl->subsys->passthru_ctrl;
u16 status = NVME_SC_SUCCESS;
struct nvme_id_ctrl *id;
- u32 max_hw_sectors;
+ int max_hw_sectors;
int page_shift;
id = kzalloc(sizeof(*id), GFP_KERNEL);
@@ -48,6 +48,13 @@ static u16 nvmet_passthru_override_id_ctrl(struct nvmet_req *req)
max_hw_sectors = min_not_zero(pctrl->max_segments << (PAGE_SHIFT - 9),
pctrl->max_hw_sectors);
+ /*
+ * nvmet_passthru_map_sg is limitted to using a single bio so limit
+ * the mdts based on BIO_MAX_PAGES as well
+ */
+ max_hw_sectors = min_not_zero(BIO_MAX_PAGES << (PAGE_SHIFT - 9),
+ max_hw_sectors);
+
page_shift = NVME_CAP_MPSMIN(ctrl->cap) + 12;
id->mdts = ilog2(max_hw_sectors) + 9 - page_shift;
@@ -180,18 +187,20 @@ static void nvmet_passthru_req_done(struct request *rq,
static int nvmet_passthru_map_sg(struct nvmet_req *req, struct request *rq)
{
- int sg_cnt = req->sg_cnt;
struct scatterlist *sg;
int op_flags = 0;
struct bio *bio;
int i, ret;
+ if (req->sg_cnt > BIO_MAX_PAGES)
+ return -EINVAL;
+
if (req->cmd->common.opcode == nvme_cmd_flush)
op_flags = REQ_FUA;
else if (nvme_is_write(req->cmd))
op_flags = REQ_SYNC | REQ_IDLE;
- bio = bio_alloc(GFP_KERNEL, min(sg_cnt, BIO_MAX_PAGES));
+ bio = bio_alloc(GFP_KERNEL, req->sg_cnt);
bio->bi_end_io = bio_put;
bio->bi_opf = req_op(rq) | op_flags;
@@ -201,7 +210,6 @@ static int nvmet_passthru_map_sg(struct nvmet_req *req, struct request *rq)
bio_put(bio);
return -EINVAL;
}
- sg_cnt--;
}
ret = blk_rq_append_bio(rq, &bio);
@@ -236,7 +244,7 @@ static void nvmet_passthru_execute_cmd(struct nvmet_req *req)
q = ns->queue;
}
- rq = nvme_alloc_request(q, req->cmd, BLK_MQ_REQ_NOWAIT, NVME_QID_ANY);
+ rq = nvme_alloc_request(q, req->cmd, 0, NVME_QID_ANY);
if (IS_ERR(rq)) {
status = NVME_SC_INTERNAL;
goto out_put_ns;

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