nvme: blank out authentication fabrics options if not configured

[ Upstream commit c7ca9757bda35ff9ce27ab42f2cb8b84d983e6ad ]

If the config option NVME_HOST_AUTH is not selected we should not
accept the corresponding fabrics options. This allows userspace
to detect if NVMe authentication has been enabled for the kernel.

Cc: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Fixes: f50fff73d620 ("nvme: implement In-Band authentication")
Signed-off-by: Hannes Reinecke <hare@suse.de>
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 8175d49..92ba315 100644 (file)
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -645,8 +645,10 @@ static const match_table_t opt_tokens = {
        { NVMF_OPT_TOS,                 "tos=%d"                },
        { NVMF_OPT_FAIL_FAST_TMO,       "fast_io_fail_tmo=%d"   },
        { NVMF_OPT_DISCOVERY,           "discovery"             },
+#ifdef CONFIG_NVME_HOST_AUTH
        { NVMF_OPT_DHCHAP_SECRET,       "dhchap_secret=%s"      },
        { NVMF_OPT_DHCHAP_CTRL_SECRET,  "dhchap_ctrl_secret=%s" },
+#endif
        { NVMF_OPT_ERR,                 NULL                    }
 };