netdev - Re: [PATCH net-next v2 6/7] nfp: devlink: report the running and flashed versions

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Date:   Wed, 30 Jan 2019 22:57:52 +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 6/7] nfp: devlink: report the running and
 flashed versions

Wed, Jan 30, 2019 at 08:05:12PM CET, jakub.kicinski@...ronome.com wrote:
>Report versions of firmware components using the new NSP command.
>
>Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
>---
> .../net/ethernet/netronome/nfp/nfp_devlink.c  | 86 +++++++++++++++++++
> include/net/devlink.h                         | 11 +++
> 2 files changed, 97 insertions(+)
>
>diff --git a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
>index 9857fa663adf..fade37d2b796 100644
>--- a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
>+++ b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
>@@ -207,11 +207,59 @@ nfp_devlink_versions_get_hwinfo(struct nfp_pf *pf, struct devlink_info_req *req)
> 	return 0;
> }
> 
>+static const struct nfp_devlink_versions {
>+	enum nfp_nsp_versions id;
>+	const char *key;
>+} nfp_devlink_versions_nsp[] = {
>+	{ NFP_VERSIONS_BUNDLE,	"fw.bundle_id", },
>+	{ NFP_VERSIONS_BSP,	DEVLINK_VERSION_GENERIC_FW_MGMT, },
>+	{ NFP_VERSIONS_CPLD,	"fw.cpld", },
>+	{ NFP_VERSIONS_APP,	DEVLINK_VERSION_GENERIC_FW_APP, },
>+	{ NFP_VERSIONS_UNDI,	DEVLINK_VERSION_GENERIC_FW_UNDI, },
>+	{ NFP_VERSIONS_NCSI,	DEVLINK_VERSION_GENERIC_FW_NCSI, },
>+	{ NFP_VERSIONS_CFGR,	"chip.init", },
>+};
>+
>+static int
>+nfp_devlink_versions_get_nsp(struct devlink_info_req *req, bool flash,
>+			     const u8 *buf, unsigned int size)
>+{
>+	enum devlink_version_type type;
>+	unsigned int i;
>+	int err;
>+
>+	type = flash ? DEVLINK_VERSION_STORED : DEVLINK_VERSION_RUNNING;
>+
>+	for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_nsp); i++) {
>+		const struct nfp_devlink_versions *info;
>+		const char *version;
>+
>+		info = &nfp_devlink_versions_nsp[i];
>+
>+		version = nfp_nsp_versions_get(info->id, flash, buf, size);
>+		if (IS_ERR(version)) {
>+			if (PTR_ERR(version) == -ENOENT)
>+				continue;
>+			else
>+				return PTR_ERR(version);
>+		}
>+
>+		err = devlink_info_report_version(req, type,
>+						  info->key, version);
>+		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)
> {
> 	struct nfp_pf *pf = devlink_priv(devlink);
>+	struct nfp_nsp *nsp;
>+	char *buf = NULL;
> 	const char *sn;
> 	int err;
> 
>@@ -226,7 +274,45 @@ nfp_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
> 			return err;
> 	}
> 
>+	nsp = nfp_nsp_open(pf->cpp);
>+	if (IS_ERR(nsp)) {
>+		NL_SET_ERR_MSG_MOD(extack, "can't access NSP");
>+		return PTR_ERR(nsp);
>+	}
>+
>+	if (nfp_nsp_has_versions(nsp)) {
>+		buf = kzalloc(NFP_NSP_VERSION_BUFSZ, GFP_KERNEL);
>+		if (!buf) {
>+			err = -ENOMEM;
>+			goto err_close_nsp;
>+		}
>+
>+		err = nfp_nsp_versions(nsp, buf, NFP_NSP_VERSION_BUFSZ);
>+		if (err)
>+			goto err_free_buf;
>+
>+		err = nfp_devlink_versions_get_nsp(req, false,
>+						   buf, NFP_NSP_VERSION_BUFSZ);
>+		if (err)
>+			goto err_free_buf;
>+
>+		err = nfp_devlink_versions_get_nsp(req, true,
>+						   buf, NFP_NSP_VERSION_BUFSZ);
>+		if (err)
>+			goto err_free_buf;
>+
>+		kfree(buf);
>+	}
>+
>+	nfp_nsp_close(nsp);
>+
> 	return nfp_devlink_versions_get_hwinfo(pf, req);
>+
>+err_free_buf:
>+	kfree(buf);
>+err_close_nsp:
>+	nfp_nsp_close(nsp);
>+	return err;
> }
> 
> const struct devlink_ops nfp_devlink_ops = {
>diff --git a/include/net/devlink.h b/include/net/devlink.h
>index 3d553cc6693d..c678ed0cb099 100644
>--- a/include/net/devlink.h
>+++ b/include/net/devlink.h
>@@ -433,6 +433,17 @@ enum devlink_param_wol_types {
> /* Revision of board design */
> #define DEVLINK_VERSION_GENERIC_BOARD_REV	"board.rev"
> 
>+/* Control processor FW version, FW is responsible for house keeping tasks,
>+ * PHY control etc.
>+ */
>+#define DEVLINK_VERSION_GENERIC_FW_MGMT		"fw.mgmt"
>+/* Data path microcode controlling high-speed packet processing */
>+#define DEVLINK_VERSION_GENERIC_FW_APP		"fw.app"
>+/* UNDI software version */
>+#define DEVLINK_VERSION_GENERIC_FW_UNDI		"fw.undi"
>+/* NCSI support/handler version */
>+#define DEVLINK_VERSION_GENERIC_FW_NCSI		"fw.ncsi"

Same here. Also, please put "INFO" in the names to respect the namespacing


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