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path: root/drivers/nvme/target/core.c
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Diffstat (limited to 'drivers/nvme/target/core.c')
-rw-r--r--drivers/nvme/target/core.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 645ba7eee35d..b54748ad5f48 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -57,6 +57,17 @@ u16 nvmet_copy_from_sgl(struct nvmet_req *req, off_t off, void *buf, size_t len)
return 0;
}
+static unsigned int nvmet_max_nsid(struct nvmet_subsys *subsys)
+{
+ struct nvmet_ns *ns;
+
+ if (list_empty(&subsys->namespaces))
+ return 0;
+
+ ns = list_last_entry(&subsys->namespaces, struct nvmet_ns, dev_link);
+ return ns->nsid;
+}
+
static u32 nvmet_async_event_result(struct nvmet_async_event *aen)
{
return aen->event_type | (aen->event_info << 8) | (aen->log_page << 16);
@@ -334,6 +345,8 @@ void nvmet_ns_disable(struct nvmet_ns *ns)
ns->enabled = false;
list_del_rcu(&ns->dev_link);
+ if (ns->nsid == subsys->max_nsid)
+ subsys->max_nsid = nvmet_max_nsid(subsys);
mutex_unlock(&subsys->lock);
/*
@@ -497,6 +510,7 @@ bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq,
req->ops = ops;
req->sg = NULL;
req->sg_cnt = 0;
+ req->transfer_len = 0;
req->rsp->status = 0;
/* no support for fused commands yet */
@@ -546,6 +560,15 @@ void nvmet_req_uninit(struct nvmet_req *req)
}
EXPORT_SYMBOL_GPL(nvmet_req_uninit);
+void nvmet_req_execute(struct nvmet_req *req)
+{
+ if (unlikely(req->data_len != req->transfer_len))
+ nvmet_req_complete(req, NVME_SC_SGL_INVALID_DATA | NVME_SC_DNR);
+ else
+ req->execute(req);
+}
+EXPORT_SYMBOL_GPL(nvmet_req_execute);
+
static inline bool nvmet_cc_en(u32 cc)
{
return (cc >> NVME_CC_EN_SHIFT) & 0x1;