netdev - Re: [RFC net-next 1/6] devlink: add device information API

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 15 Jan 2019 11:15:12 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Jakub Kicinski <jakub.kicinski@...ronome.com>
Cc:     davem@...emloft.net, netdev@...r.kernel.org,
        oss-drivers@...ronome.com
Subject: Re: [RFC net-next 1/6] devlink: add device information API

Tue, Jan 15, 2019 at 01:50:03AM CET, jakub.kicinski@...ronome.com wrote:

[...]

>+static int devlink_nl_info_sn_fill(struct sk_buff *msg, struct devlink *devlink,
>+				   struct netlink_ext_ack *extack)
>+{
>+	unsigned char sn[32];

:/ Not good to have number directly here.

>+	size_t len = 0;
>+	int err;
>+
>+	if (!devlink->ops->serial_get)
>+		return 0;
>+
>+	err = devlink->ops->serial_get(devlink, sn, ARRAY_SIZE(sn), &len,
>+				       extack);

Maybe it would be good to have a helper to fill this as well. That way,
driver could pass buffer of any length and helper would encode it into
skb.



>+	if (err)
>+		return err;
>+
>+	return nla_put(msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, len, sn);
>+}

[...]