[PATCH v8 02/13] nvme-core: export existing ctrl and ns interfaces
From: Logan Gunthorpe <logang@deltatee.com>
Date: 2019-08-28 21:55:36
Also in:
linux-fsdevel, lkml
Subsystem:
nvm express driver, the rest · Maintainers:
Keith Busch, Jens Axboe, Christoph Hellwig, Sagi Grimberg, Linus Torvalds
From: Chaitanya Kulkarni <redacted> 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 <redacted> 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 776eff8c5ba7..fabf60deda52 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;
@@ -1294,6 +1296,7 @@ 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) {
@@ -1308,7 +1311,7 @@ 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
@@ -1328,6 +1331,7 @@ 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)
@@ -3282,7 +3286,7 @@ 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;
@@ -3300,6 +3304,7 @@ 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 42d59445ae6b..e309b7977d82 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h@@ -441,6 +441,8 @@ 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);
@@ -477,8 +479,13 @@ 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