From f5eb7397471bbc24d63011f8cb2d422ac606085d Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 22 Jul 2024 14:02:23 +0200 Subject: [PATCH] nvme-sysfs: add 'tls_configured_key' sysfs attribute There is a difference between the negotiated TLS key (which is always present for a TLS encrypted connection) and the configured TLS key (which is specified with the --tls_key command line option). To differentate between these two add a new sysfs attribute 'tls_configured_key' to hold the specified on the command line. Signed-off-by: Hannes Reinecke Reviewed-by: Sagi Grimberg Signed-off-by: Keith Busch --- drivers/nvme/host/sysfs.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/nvme/host/sysfs.c b/drivers/nvme/host/sysfs.c index dc7ceb53147f..2055dad7bc63 100644 --- a/drivers/nvme/host/sysfs.c +++ b/drivers/nvme/host/sysfs.c @@ -743,8 +743,19 @@ static ssize_t tls_key_show(struct device *dev, } static DEVICE_ATTR_RO(tls_key); +static ssize_t tls_configured_key_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct nvme_ctrl *ctrl = dev_get_drvdata(dev); + struct key *key = ctrl->opts->tls_key; + + return sysfs_emit(buf, "%08x\n", key_serial(key)); +} +static DEVICE_ATTR_RO(tls_configured_key); + static struct attribute *nvme_tls_attrs[] = { &dev_attr_tls_key.attr, + &dev_attr_tls_configured_key.attr, }; static umode_t nvme_tls_attrs_are_visible(struct kobject *kobj, @@ -759,6 +770,9 @@ static umode_t nvme_tls_attrs_are_visible(struct kobject *kobj, if (a == &dev_attr_tls_key.attr && !ctrl->opts->tls) return 0; + if (a == &dev_attr_tls_configured_key.attr && + !ctrl->opts->tls_key) + return 0; return a->mode; } -- 2.49.0