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nvme: common: make keyring and auth separate modules

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When only the keyring module is included but auth is not, modpost
complains about the lack of a module license tag:

ERROR: modpost: missing MODULE_LICENSE() in drivers/nvme/common/nvme-common.o

Address this by making both modules buildable standalone,
removing the now unnecessary CONFIG_NVME_COMMON symbol
in the process.

Also, now that NVME_KEYRING config symbol can be either a module or
built-in, the stubs need to check for '#if IS_ENABLED' rather than a
simple '#ifdef'.

Fixes: 9d77eb5277 ("nvme-keyring: register '.nvme' keyring")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Arnd Bergmann 2023-10-26 15:08:03 +02:00 committed by Keith Busch
parent 4733b65d82
commit 6affe08aea
7 changed files with 10 additions and 14 deletions
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2
drivers/nvme/Makefile
View file

@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_NVME_COMMON) += common/
obj-y += common/
obj-y += host/
obj-y += target/

7
drivers/nvme/common/Kconfig
View file

@ -1,14 +1,11 @@
# SPDX-License-Identifier: GPL-2.0-only
config NVME_COMMON
tristate
config NVME_KEYRING
bool
tristate
select KEYS
config NVME_AUTH
bool
tristate
select CRYPTO
select CRYPTO_HMAC
select CRYPTO_SHA256

7
drivers/nvme/common/Makefile
View file

@ -2,7 +2,8 @@
ccflags-y += -I$(src)
obj-$(CONFIG_NVME_COMMON) += nvme-common.o
obj-$(CONFIG_NVME_AUTH) += nvme-auth.o
obj-$(CONFIG_NVME_KEYRING) += nvme-keyring.o
nvme-common-$(CONFIG_NVME_AUTH) += auth.o
nvme-common-$(CONFIG_NVME_KEYRING) += keyring.o
nvme-auth-y += auth.o
nvme-keyring-y += keyring.o

2
drivers/nvme/common/keyring.c
View file

@ -180,3 +180,5 @@ void nvme_keyring_exit(void)
key_put(nvme_keyring);
}
EXPORT_SYMBOL_GPL(nvme_keyring_exit);
MODULE_LICENSE("GPL v2");

2
drivers/nvme/host/Kconfig
View file

@ -95,7 +95,6 @@ config NVME_TCP
config NVME_TCP_TLS
bool "NVMe over Fabrics TCP TLS encryption support"
depends on NVME_TCP
select NVME_COMMON
select NVME_KEYRING
select NET_HANDSHAKE
select KEYS
@ -110,7 +109,6 @@ config NVME_TCP_TLS
config NVME_HOST_AUTH
bool "NVM Express over Fabrics In-Band Authentication"
depends on NVME_CORE
select NVME_COMMON
select NVME_AUTH
help
This provides support for NVMe over Fabrics In-Band Authentication.

2
drivers/nvme/target/Kconfig
View file

@ -87,7 +87,6 @@ config NVME_TARGET_TCP
config NVME_TARGET_TCP_TLS
bool "NVMe over Fabrics TCP target TLS encryption support"
depends on NVME_TARGET_TCP
select NVME_COMMON
select NVME_KEYRING
select NET_HANDSHAKE
select KEYS
@ -102,7 +101,6 @@ config NVME_TARGET_TCP_TLS
config NVME_TARGET_AUTH
bool "NVMe over Fabrics In-band Authentication support"
depends on NVME_TARGET
select NVME_COMMON
select NVME_AUTH
help
This enables support for NVMe over Fabrics In-band Authentication

2
include/linux/nvme-keyring.h
View file

@ -6,7 +6,7 @@
#ifndef _NVME_KEYRING_H
#define _NVME_KEYRING_H
#ifdef CONFIG_NVME_KEYRING
#if IS_ENABLED(CONFIG_NVME_KEYRING)
key_serial_t nvme_tls_psk_default(struct key *keyring,
const char *hostnqn, const char *subnqn);