From: Logan Gunthorpe <logang@deltatee.com>
To: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org
Cc: Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>,
Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@fb.com>,
Chaitanya Kulkarni <Chaitanya.Kulkarni@wdc.com>,
Max Gurtovoy <maxg@mellanox.com>,
Stephen Bates <sbates@raithlin.com>,
Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>,
Logan Gunthorpe <logang@deltatee.com>
Subject: [PATCH v7 02/14] nvme-core: export existing ctrl and ns interfaces
Date: Thu, 1 Aug 2019 17:45:01 -0600 [thread overview]
Message-ID: <20190801234514.7941-3-logang@deltatee.com> (raw)
In-Reply-To: <20190801234514.7941-1-logang@deltatee.com>
From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
We export existing nvme ctrl and ns management APIs so that target
passthru code can manage the nvme ctrl.
This is a preparation patch for implementing NVMe Over Fabric target
passthru feature.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
---
drivers/nvme/host/core.c | 17 +++++++++++------
drivers/nvme/host/nvme.h | 7 +++++++
2 files changed, 18 insertions(+), 6 deletions(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index f72334f34a30..4445efb16a84 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -412,10 +412,11 @@ static void nvme_free_ns(struct kref *kref)
kfree(ns);
}
-static void nvme_put_ns(struct nvme_ns *ns)
+void nvme_put_ns(struct nvme_ns *ns)
{
kref_put(&ns->kref, nvme_free_ns);
}
+EXPORT_SYMBOL_GPL(nvme_put_ns);
static inline void nvme_clear_nvme_request(struct request *req)
{
@@ -1088,7 +1089,7 @@ static int nvme_identify_ns_list(struct nvme_ctrl *dev, unsigned nsid, __le32 *n
NVME_IDENTIFY_DATA_SIZE);
}
-static struct nvme_id_ns *nvme_identify_ns(struct nvme_ctrl *ctrl,
+struct nvme_id_ns *nvme_identify_ns(struct nvme_ctrl *ctrl,
unsigned nsid)
{
struct nvme_id_ns *id;
@@ -1113,6 +1114,7 @@ static struct nvme_id_ns *nvme_identify_ns(struct nvme_ctrl *ctrl,
return id;
}
+EXPORT_SYMBOL_GPL(nvme_identify_ns);
static int nvme_features(struct nvme_ctrl *dev, u8 op, unsigned int fid,
unsigned int dword11, void *buffer, size_t buflen, u32 *result)
@@ -1261,8 +1263,8 @@ static u32 nvme_known_admin_effects(u8 opcode)
return 0;
}
-static u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
- u8 opcode)
+u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
+ u8 opcode)
{
u32 effects = 0;
@@ -1291,6 +1293,7 @@ static u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
}
return effects;
}
+EXPORT_SYMBOL_GPL(nvme_passthru_start);
static void nvme_update_formats(struct nvme_ctrl *ctrl)
{
@@ -1305,7 +1308,7 @@ static void nvme_update_formats(struct nvme_ctrl *ctrl)
nvme_remove_invalid_namespaces(ctrl, NVME_NSID_ALL);
}
-static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects)
+void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects)
{
/*
* Revalidate LBA changes prior to unfreezing. This is necessary to
@@ -1323,6 +1326,7 @@ static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects)
if (effects & (NVME_CMD_EFFECTS_NIC | NVME_CMD_EFFECTS_NCC))
nvme_queue_scan(ctrl);
}
+EXPORT_SYMBOL_GPL(nvme_passthru_end);
static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
struct nvme_passthru_cmd __user *ucmd)
@@ -3265,7 +3269,7 @@ static int ns_cmp(void *priv, struct list_head *a, struct list_head *b)
return nsa->head->ns_id - nsb->head->ns_id;
}
-static struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid)
+struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid)
{
struct nvme_ns *ns, *ret = NULL;
@@ -3283,6 +3287,7 @@ static struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid)
up_read(&ctrl->namespaces_rwsem);
return ret;
}
+EXPORT_SYMBOL_GPL(nvme_find_get_ns);
static int nvme_setup_streams_ns(struct nvme_ctrl *ctrl, struct nvme_ns *ns)
{
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 7e827c9e892c..ccd3aff675fb 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -436,6 +436,8 @@ void nvme_start_ctrl(struct nvme_ctrl *ctrl);
void nvme_stop_ctrl(struct nvme_ctrl *ctrl);
void nvme_put_ctrl(struct nvme_ctrl *ctrl);
int nvme_init_identify(struct nvme_ctrl *ctrl);
+struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned int nsid);
+void nvme_put_ns(struct nvme_ns *ns);
void nvme_remove_namespaces(struct nvme_ctrl *ctrl);
@@ -472,8 +474,13 @@ int nvme_set_features(struct nvme_ctrl *dev, unsigned int fid,
int nvme_get_features(struct nvme_ctrl *dev, unsigned int fid,
unsigned int dword11, void *buffer, size_t buflen,
u32 *result);
+u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
+ u8 opcode);
+void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects);
int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count);
void nvme_stop_keep_alive(struct nvme_ctrl *ctrl);
+struct nvme_id_ns *nvme_identify_ns(struct nvme_ctrl *ctrl,
+ unsigned int nsid);
int nvme_reset_ctrl(struct nvme_ctrl *ctrl);
int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl);
int nvme_delete_ctrl(struct nvme_ctrl *ctrl);
--
2.20.1
next prev parent reply other threads:[~2019-08-01 23:45 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-01 23:44 [PATCH v7 00/14] nvmet: add target passthru commands support Logan Gunthorpe
2019-08-01 23:45 ` [PATCH v7 01/14] nvme-core: introduce nvme_ctrl_get_by_path() Logan Gunthorpe
2019-08-14 14:20 ` Max Gurtovoy
2019-08-15 11:46 ` Max Gurtovoy
2019-08-15 15:59 ` Logan Gunthorpe
2019-08-01 23:45 ` Logan Gunthorpe [this message]
2019-08-01 23:45 ` [PATCH v7 03/14] nvmet: add return value to nvmet_add_async_event() Logan Gunthorpe
2019-08-14 14:26 ` Max Gurtovoy
2019-08-14 16:59 ` Logan Gunthorpe
2019-08-01 23:45 ` [PATCH v7 04/14] nvmet: make nvmet_copy_ns_identifier() non-static Logan Gunthorpe
2019-08-14 14:29 ` Max Gurtovoy
2019-08-15 7:15 ` Chaitanya Kulkarni
2019-08-01 23:45 ` [PATCH v7 05/14] nvmet-passthru: update KConfig with config passthru option Logan Gunthorpe
2019-08-14 14:31 ` Max Gurtovoy
2019-08-01 23:45 ` [PATCH v7 06/14] nvmet-passthru: add passthru code to process commands Logan Gunthorpe
2019-08-01 23:45 ` [PATCH v7 07/14] nvmet-passthru: add enable/disable helpers Logan Gunthorpe
2019-08-15 12:20 ` Max Gurtovoy
2019-08-15 16:02 ` Logan Gunthorpe
2019-08-01 23:45 ` [PATCH v7 08/14] nvmet-core: allow one host per passthru-ctrl Logan Gunthorpe
2019-08-15 12:36 ` Max Gurtovoy
2019-08-15 16:06 ` Logan Gunthorpe
2019-08-18 10:33 ` Max Gurtovoy
2019-08-22 0:09 ` Sagi Grimberg
2019-08-22 8:50 ` Max Gurtovoy
2019-08-22 17:41 ` Sagi Grimberg
2019-08-22 19:17 ` Sagi Grimberg
2019-08-22 19:41 ` Logan Gunthorpe
2019-08-01 23:45 ` [PATCH v7 09/14] nvmet-core: don't check the data len for pt-ctrl Logan Gunthorpe
2019-08-01 23:45 ` [PATCH v7 10/14] nvmet-tcp: don't check data_len in nvmet_tcp_map_data() Logan Gunthorpe
2019-08-01 23:45 ` [PATCH v7 11/14] nvmet-configfs: introduce passthru configfs interface Logan Gunthorpe
2019-08-15 12:46 ` Max Gurtovoy
2019-08-01 23:45 ` [PATCH v7 12/14] block: don't check blk_rq_is_passthrough() in blk_do_io_stat() Logan Gunthorpe
2019-08-01 23:45 ` [PATCH v7 13/14] block: call blk_account_io_start() in blk_execute_rq_nowait() Logan Gunthorpe
2019-08-01 23:45 ` [PATCH v7 14/14] nvmet-passthru: support block accounting Logan Gunthorpe
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