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

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

Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Hannes Reinecke
2024-07-22 14:02:25 +02:00
committed by Keith Busch
parent 02a3688c53
commit bb2df18958
1 changed files with 12 additions and 0 deletions
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12
drivers/nvme/target/auth.c
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@@ -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) {