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Subject[PATCH net-next v3 04/10] ethtool: Add flashing transceiver modules' firmware notifications ability
Date
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

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