Commit bb2df189 authored by Hannes Reinecke's avatar Hannes Reinecke Committed by Keith Busch
Browse files

nvmet-auth: allow to clear DH-HMAC-CHAP keys 



As we can set DH-HMAC-CHAP keys, we should also be
able to unset them.

Signed-off-by: default avatarHannes Reinecke <hare@kernel.org>
Reviewed-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
parent 02a3688c

drivers/nvme/target/auth.c

+12 −0
Original line number Diff line number Diff line
@@ -25,6 +25,18 @@ int nvmet_auth_set_key(struct nvmet_host *host, const char *secret, 
	unsigned char key_hash;

	char *dhchap_secret;



	if (!strlen(secret)) {

		if (set_ctrl) {

			kfree(host->dhchap_ctrl_secret);

			host->dhchap_ctrl_secret = NULL;

			host->dhchap_ctrl_key_hash = 0;

		} else {

			kfree(host->dhchap_secret);

			host->dhchap_secret = NULL;

			host->dhchap_key_hash = 0;

		}

		return 0;

	}

	if (sscanf(secret, "DHHC-1:%hhd:%*s", &key_hash) != 1)

		return -EINVAL;

	if (key_hash > 3) {