Received-SPF: pass (google.com: domain of linux-kernel+bounces-145032-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates
 216.228.117.160 as permitted sender) receiver=protection.outlook.com;
 client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C
From: Danielle Ratson <danieller@nvidia.com>
To: <netdev@vger.kernel.org>
CC: <davem@davemloft.net>, <edumazet@google.com>, <kuba@kernel.org>,
	<pabeni@redhat.com>, <corbet@lwn.net>, <linux@armlinux.org.uk>,
	<sdf@google.com>, <kory.maincent@bootlin.com>,
	<maxime.chevallier@bootlin.com>, <vladimir.oltean@nxp.com>,
	<przemyslaw.kitszel@intel.com>, <ahmed.zaki@intel.com>,
	<richardcochran@gmail.com>, <shayagr@amazon.com>, <paul.greenwalt@intel.com>,
	<jiri@resnulli.us>, <linux-doc@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <mlxsw@nvidia.com>, <petrm@nvidia.com>,
	<idosch@nvidia.com>, Danielle Ratson <danieller@nvidia.com>
Subject: [PATCH net-next v2 04/10] ethtool: Add flashing transceiver modules' firmware notifications ability
Date: Mon, 15 Apr 2024 15:07:11 +0300
Message-ID: <20240415120717.1251864-5-danieller@nvidia.com>
In-Reply-To: <20240415120717.1251864-1-danieller@nvidia.com>
References: <20240415120717.1251864-1-danieller@nvidia.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Apr 2024 12:08:15.3426
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: c84b3563-3a5a-4be3-09d4-08dc5d44baf6
X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com]
X-MS-Exchange-CrossTenant-AuthSource:
	BL02EPF0001A0FF.namprd03.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7211

Add progress notifications ability to user space while flashing modules'
firmware by implementing the interface between the user space and the
kernel.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
---

Notes:
    v2:
    	* Increase err_msg length.

 net/ethtool/module.c    | 83 +++++++++++++++++++++++++++++++++++++++++
 net/ethtool/module_fw.h | 10 +++++
 2 files changed, 93 insertions(+)
 create mode 100644 net/ethtool/module_fw.h

diff --git a/net/ethtool/module.c b/net/ethtool/module.c
index ceb575efc290..1c659bd85160 100644
--- a/net/ethtool/module.c
+++ b/net/ethtool/module.c
@@ -5,6 +5,7 @@
 #include "netlink.h"
 #include "common.h"
 #include "bitset.h"
+#include "module_fw.h"
 
 struct module_req_info {
 	struct ethnl_req_info base;
@@ -158,3 +159,85 @@ const struct ethnl_request_ops ethnl_module_request_ops = {
 	.set			= ethnl_set_module,
 	.set_ntf_cmd		= ETHTOOL_MSG_MODULE_NTF,
 };
+
+/* MODULE_FW_FLASH_NTF */
+
+static void
+ethnl_module_fw_flash_ntf(struct net_device *dev,
+			  enum ethtool_module_fw_flash_status status,
+			  const char *status_msg, u64 done, u64 total)
+{
+	struct sk_buff *skb;
+	void *hdr;
+	int ret;
+
+	skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!skb)
+		return;
+
+	hdr = ethnl_bcastmsg_put(skb, ETHTOOL_MSG_MODULE_FW_FLASH_NTF);
+	if (!hdr)
+		goto err_skb;
+
+	ret = ethnl_fill_reply_header(skb, dev,
+				      ETHTOOL_A_MODULE_FW_FLASH_HEADER);
+	if (ret < 0)
+		goto err_skb;
+
+	if (nla_put_u8(skb, ETHTOOL_A_MODULE_FW_FLASH_STATUS, status))
+		goto err_skb;
+
+	if (status_msg &&
+	    nla_put_string(skb, ETHTOOL_A_MODULE_FW_FLASH_STATUS_MSG,
+			   status_msg))
+		goto err_skb;
+
+	if (nla_put_u64_64bit(skb, ETHTOOL_A_MODULE_FW_FLASH_DONE, done,
+			      ETHTOOL_A_MODULE_FW_FLASH_PAD))
+		goto err_skb;
+
+	if (nla_put_u64_64bit(skb, ETHTOOL_A_MODULE_FW_FLASH_TOTAL,
+			      total, ETHTOOL_A_MODULE_FW_FLASH_PAD))
+		goto err_skb;
+
+	genlmsg_end(skb, hdr);
+	ethnl_multicast(skb, dev);
+	return;
+
+err_skb:
+	nlmsg_free(skb);
+}
+
+void ethnl_module_fw_flash_ntf_err(struct net_device *dev,
+				   char *err_msg, char *sub_err_msg)
+{
+	char status_msg[120];
+
+	if (sub_err_msg)
+		sprintf(status_msg, "%s, %s.", err_msg, sub_err_msg);
+	else
+		sprintf(status_msg, "%s.", err_msg);
+
+	ethnl_module_fw_flash_ntf(dev, ETHTOOL_MODULE_FW_FLASH_STATUS_ERROR,
+				  status_msg, 0, 0);
+}
+
+void ethnl_module_fw_flash_ntf_start(struct net_device *dev)
+{
+	ethnl_module_fw_flash_ntf(dev, ETHTOOL_MODULE_FW_FLASH_STATUS_STARTED,
+				  NULL, 0, 0);
+}
+
+void ethnl_module_fw_flash_ntf_complete(struct net_device *dev)
+{
+	ethnl_module_fw_flash_ntf(dev, ETHTOOL_MODULE_FW_FLASH_STATUS_COMPLETED,
+				  NULL, 0, 0);
+}
+
+void ethnl_module_fw_flash_ntf_in_progress(struct net_device *dev, u64 done,
+					   u64 total)
+{
+	ethnl_module_fw_flash_ntf(dev,
+				  ETHTOOL_MODULE_FW_FLASH_STATUS_IN_PROGRESS,
+				  NULL, done, total);
+}
diff --git a/net/ethtool/module_fw.h b/net/ethtool/module_fw.h
new file mode 100644
index 000000000000..e40eae442741
--- /dev/null
+++ b/net/ethtool/module_fw.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <uapi/linux/ethtool.h>
+
+void ethnl_module_fw_flash_ntf_err(struct net_device *dev,
+				   char *err_msg, char *sub_err_msg);
+void ethnl_module_fw_flash_ntf_start(struct net_device *dev);
+void ethnl_module_fw_flash_ntf_complete(struct net_device *dev);
+void ethnl_module_fw_flash_ntf_in_progress(struct net_device *dev, u64 done,
+					   u64 total);
-- 
2.43.0