From: Michal Kubecek <mkubecek@suse.cz>
Date: Sat, 28 Mar 2020 00:01:48 +0100
Subject: ethtool: add EEE_NTF notification
Patch-mainline: v5.7-rc1
Git-commit: 6c5bc8fe4e1915da8296a665bd742dbe34de02f0
References: bsc#1176447

Send ETHTOOL_MSG_EEE_NTF notification whenever EEE settings of a network
device are modified using ETHTOOL_MSG_EEE_SET netlink message or
ETHTOOL_SEEE ioctl request.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 Documentation/networking/ethtool-netlink.rst |    1 +
 include/uapi/linux/ethtool_netlink.h         |    1 +
 net/ethtool/eee.c                            |    3 +++
 net/ethtool/ioctl.c                          |    6 +++++-
 net/ethtool/netlink.c                        |    2 ++
 5 files changed, 12 insertions(+), 1 deletion(-)

--- a/Documentation/networking/ethtool-netlink.rst
+++ b/Documentation/networking/ethtool-netlink.rst
@@ -232,6 +232,7 @@ Kernel to userspace:
   ``ETHTOOL_MSG_PAUSE_GET_REPLY``       pause parameters
   ``ETHTOOL_MSG_PAUSE_NTF``             pause parameters
   ``ETHTOOL_MSG_EEE_GET_REPLY``         EEE settings
+  ``ETHTOOL_MSG_EEE_NTF``               EEE settings
   ===================================== =================================
 
 ``GET`` requests are sent by userspace applications to retrieve device
--- a/include/uapi/linux/ethtool_netlink.h
+++ b/include/uapi/linux/ethtool_netlink.h
@@ -71,6 +71,7 @@ enum {
 	ETHTOOL_MSG_PAUSE_GET_REPLY,
 	ETHTOOL_MSG_PAUSE_NTF,
 	ETHTOOL_MSG_EEE_GET_REPLY,
+	ETHTOOL_MSG_EEE_NTF,
 
 	/* add new constants above here */
 	__ETHTOOL_MSG_KERNEL_CNT,
--- a/net/ethtool/eee.c
+++ b/net/ethtool/eee.c
@@ -192,6 +192,9 @@ int ethnl_set_eee(struct sk_buff *skb, s
 		goto out_ops;
 
 	ret = dev->ethtool_ops->set_eee(dev, &eee);
+	if (ret < 0)
+		goto out_ops;
+	ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);
 
 out_ops:
 	ethnl_ops_complete(dev);
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -1352,6 +1352,7 @@ static int ethtool_get_eee(struct net_de
 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
 {
 	struct ethtool_eee edata;
+	int ret;
 
 	if (!dev->ethtool_ops->set_eee)
 		return -EOPNOTSUPP;
@@ -1359,7 +1360,10 @@ static int ethtool_set_eee(struct net_de
 	if (copy_from_user(&edata, useraddr, sizeof(edata)))
 		return -EFAULT;
 
-	return dev->ethtool_ops->set_eee(dev, &edata);
+	ret = dev->ethtool_ops->set_eee(dev, &edata);
+	if (!ret)
+		ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);
+	return ret;
 }
 
 static int ethtool_nway_reset(struct net_device *dev)
--- a/net/ethtool/netlink.c
+++ b/net/ethtool/netlink.c
@@ -540,6 +540,7 @@ ethnl_default_notify_ops[ETHTOOL_MSG_KER
 	[ETHTOOL_MSG_CHANNELS_NTF]	= &ethnl_channels_request_ops,
 	[ETHTOOL_MSG_COALESCE_NTF]	= &ethnl_coalesce_request_ops,
 	[ETHTOOL_MSG_PAUSE_NTF]		= &ethnl_pause_request_ops,
+	[ETHTOOL_MSG_EEE_NTF]		= &ethnl_eee_request_ops,
 };
 
 /* default notification handler */
@@ -631,6 +632,7 @@ static const ethnl_notify_handler_t ethn
 	[ETHTOOL_MSG_CHANNELS_NTF]	= ethnl_default_notify,
 	[ETHTOOL_MSG_COALESCE_NTF]	= ethnl_default_notify,
 	[ETHTOOL_MSG_PAUSE_NTF]		= ethnl_default_notify,
+	[ETHTOOL_MSG_EEE_NTF]		= ethnl_default_notify,
 };
 
 void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data)