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

[Jakub Kicinski <jakub.kicinski@netronome.com>]

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@netronome.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 f53ace3ac4b3..dc08301028a9 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -419,6 +419,11 @@ enum devlink_param_generic_id {
 	.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"
+
 enum devlink_version_type {
 	DEVLINK_VERSION_FIXED,
 	DEVLINK_VERSION_STORED,
-- 
2.19.2