[PATCH] nvmet: revert "nvmet: make discovery NQN configurable"

Hannes Reinecke
2022-03-15T09:14:46Z

Revert commit 626851e9225d ("nvmet: make discovery NQN configurable");
interface was deemed incorrect and will be replaced with a different
one.

Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/nvme/target/configfs.c | 39 ----------------------------------
drivers/nvme/target/core.c | 3 +--
2 files changed, 1 insertion(+), 41 deletions(-)

diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c
index 091a0ca16361..496d775c6770 100644
--- a/drivers/nvme/target/configfs.c
+++ b/drivers/nvme/target/configfs.c
@@ -1233,44 +1233,6 @@ static ssize_t nvmet_subsys_attr_model_store(struct config_item *item,
}
CONFIGFS_ATTR(nvmet_subsys_, attr_model);

-static ssize_t nvmet_subsys_attr_discovery_nqn_show(struct config_item *item,
- char *page)
-{
- return snprintf(page, PAGE_SIZE, "%s\n",
- nvmet_disc_subsys->subsysnqn);
-}
-
-static ssize_t nvmet_subsys_attr_discovery_nqn_store(struct config_item *item,
- const char *page, size_t count)
-{
- struct nvmet_subsys *subsys = to_subsys(item);
- char *subsysnqn;
- int len;
-
- len = strcspn(page, "\n");
- if (!len)
- return -EINVAL;
-
- subsysnqn = kmemdup_nul(page, len, GFP_KERNEL);
- if (!subsysnqn)
- return -ENOMEM;
-
- /*
- * The discovery NQN must be different from subsystem NQN.
- */
- if (!strcmp(subsysnqn, subsys->subsysnqn)) {
- kfree(subsysnqn);
- return -EBUSY;
- }
- down_write(&nvmet_config_sem);
- kfree(nvmet_disc_subsys->subsysnqn);
- nvmet_disc_subsys->subsysnqn = subsysnqn;
- up_write(&nvmet_config_sem);
-
- return count;
-}
-CONFIGFS_ATTR(nvmet_subsys_, attr_discovery_nqn);
-
#ifdef CONFIG_BLK_DEV_INTEGRITY
static ssize_t nvmet_subsys_attr_pi_enable_show(struct config_item *item,
char *page)
@@ -1300,7 +1262,6 @@ static struct configfs_attribute *nvmet_subsys_attrs[] = {
&nvmet_subsys_attr_attr_cntlid_min,
&nvmet_subsys_attr_attr_cntlid_max,
&nvmet_subsys_attr_attr_model,
- &nvmet_subsys_attr_attr_discovery_nqn,
#ifdef CONFIG_BLK_DEV_INTEGRITY
&nvmet_subsys_attr_attr_pi_enable,
#endif
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 5119c687de68..626caf6f1e4b 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -1493,8 +1493,7 @@ static struct nvmet_subsys *nvmet_find_get_subsys(struct nvmet_port *port,
if (!port)
return NULL;

- if (!strcmp(NVME_DISC_SUBSYS_NAME, subsysnqn) ||
- !strcmp(nvmet_disc_subsys->subsysnqn, subsysnqn)) {
+ if (!strcmp(NVME_DISC_SUBSYS_NAME, subsysnqn)) {
if (!kref_get_unless_zero(&nvmet_disc_subsys->ref))
return NULL;
return nvmet_disc_subsys;
--
2.29.2