netdev - Re: [PATCH net-next v2 4/7] nfp: devlink: report fixed versions

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Message-ID: <20190130215637.GC349@nanopsycho.orion>
Date:   Wed, 30 Jan 2019 22:56:37 +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, andrew@...n.ch, f.fainelli@...il.com,
        mkubecek@...e.cz, eugenem@...com, jonathan.lemon@...il.com
Subject: Re: [PATCH net-next v2 4/7] nfp: devlink: report fixed versions

Wed, Jan 30, 2019 at 08:05:10PM CET, jakub.kicinski@...ronome.com wrote:
>Report information about the hardware.
>
>RFCv2:
> - add defines for board IDs which are likely to be reusable for
>   other drivers (Jiri).
>
>Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
>---
> .../net/ethernet/netronome/nfp/nfp_devlink.c  | 37 ++++++++++++++++++-
> include/net/devlink.h                         |  5 +++
> 2 files changed, 41 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
>index cb3ef7e46614..9857fa663adf 100644
>--- a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
>+++ b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
>@@ -172,6 +172,41 @@ static int nfp_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
> 	return ret;
> }
> 
>+static const struct nfp_devlink_versions_simple {
>+	const char *key;
>+	const char *hwinfo;
>+} nfp_devlink_versions_hwinfo[] = {
>+	{ DEVLINK_VERSION_GENERIC_BOARD_ID,	"assembly.partno", },
>+	{ DEVLINK_VERSION_GENERIC_BOARD_REV,	"assembly.revision", },
>+	{ "board.vendor", /* fab */		"assembly.vendor", },
>+	{ "board.model", /* code name */	"assembly.model", },
>+};
>+
>+static int
>+nfp_devlink_versions_get_hwinfo(struct nfp_pf *pf, struct devlink_info_req *req)
>+{
>+	unsigned int i;
>+	int err;
>+
>+	for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_hwinfo); i++) {
>+		const struct nfp_devlink_versions_simple *info;
>+		const char *val;
>+
>+		info = &nfp_devlink_versions_hwinfo[i];
>+
>+		val = nfp_hwinfo_lookup(pf->hwinfo, info->hwinfo);
>+		if (!val)
>+			continue;
>+
>+		err = devlink_info_report_version(req, DEVLINK_VERSION_FIXED,
>+						  info->key, val);
>+		if (err)
>+			return err;
>+	}
>+
>+	return 0;
>+}
>+
> static int
> nfp_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
> 		     struct netlink_ext_ack *extack)
>@@ -191,7 +226,7 @@ nfp_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
> 			return err;
> 	}
> 
>-	return 0;
>+	return nfp_devlink_versions_get_hwinfo(pf, req);
> }
> 
> const struct devlink_ops nfp_devlink_ops = {
>diff --git a/include/net/devlink.h b/include/net/devlink.h
>index ec72638aa47f..3d553cc6693d 100644
>--- a/include/net/devlink.h
>+++ b/include/net/devlink.h
>@@ -428,6 +428,11 @@ enum devlink_param_wol_types {
> 	.validate = _validate,						\
> }
> 
>+/* Part number, identifier of board design */
>+#define DEVLINK_VERSION_GENERIC_BOARD_ID	"board.id"
>+/* Revision of board design */
>+#define DEVLINK_VERSION_GENERIC_BOARD_REV	"board.rev"

Please have this as a separate patch, not part of "nfp".


>+
> enum devlink_version_type {
> 	DEVLINK_VERSION_FIXED,
> 	DEVLINK_VERSION_STORED,
>-- 
>2.19.2
>