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Message-Id: <9cdbbd33778aaf7e5e261dc233a7cc53bb9c2540.1532953989.git.mkubecek@suse.cz>
In-Reply-To: <cover.1532953989.git.mkubecek@suse.cz>
References: <cover.1532953989.git.mkubecek@suse.cz>
From:   Michal Kubecek <mkubecek@suse.cz>
Subject: [RFC PATCH net-next v2 17/17] ethtool: implement SET_PARAMS message
To:     netdev@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, Jiri Pirko <jiri@resnulli.us>,
        David Miller <davem@davemloft.net>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Roopa Prabhu <roopa@cumulusnetworks.com>,
        Jakub Kicinski <kubakici@wp.pl>,
        "John W. Linville" <linville@tuxdriver.com>
Date:   Mon, 30 Jul 2018 14:54:07 +0200 (CEST)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Sets the information provided by ETHTOOL_SCOALESCE, ETHTOOL_SRINGPARAM,
ETHTOOL_SPAUSEPARAM, ETHTOOL_SCHANNELS, ETHTOOL_SEEE and ETHTOOL_SFECPARAM.
Each of these has corresponding nesting attribute containing attributes for
its settings. This way, userspace can request changes equivalent to one or
more of the legacy requests (and provide only part of the data to update).

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
---
 Documentation/networking/ethtool-netlink.txt |  71 ++-
 net/ethtool/netlink.c                        |   6 +
 net/ethtool/params.c                         | 429 +++++++++++++++++++
 3 files changed, 499 insertions(+), 7 deletions(-)

diff --git a/Documentation/networking/ethtool-netlink.txt b/Documentation/networking/ethtool-netlink.txt
index 630eebd7e741..2b70736110fe 100644
--- a/Documentation/networking/ethtool-netlink.txt
+++ b/Documentation/networking/ethtool-netlink.txt
@@ -126,7 +126,7 @@ List of message types
     ETHNL_CMD_GET_SETTINGS
     ETHNL_CMD_SET_SETTINGS
     ETHNL_CMD_GET_PARAMS
-    ETHNL_CMD_SET_PARAMS		response only (for now)
+    ETHNL_CMD_SET_PARAMS
 
 All constants use ETHNL_CMD_ prefix, usually followed by "GET", "SET" or "ACT"
 to indicate the type.
@@ -408,6 +408,63 @@ to them are broadcasted as notifications on change of these settings using
 netlink or ioctl ethtool interface.
 
 
+SET_PARAMS
+----------
+
+SET_PARAMS request modifies the settings retrieved by GET_PARAMS, i.e. it
+replaces ETHTOOL_SCOALESCE, ETHTOOL_SRINGPARAM, ETHTOOL_SPAUSEPARAM,
+ETHTOOL_SCHANNELS, ETHTOOL_SEEE and ETHTOOL_SFECPARAM legacy commands. For
+each of these, relevant data attributes are contained in a corresponding nest
+attribute. Some of the attributes provided by GET_SETPARAMS are read only and
+cannot be set by SET_PARAMS request.
+
+    ETHA_PARAMS_COALESCE	(nest)		coalescing
+        ETHA_COALESCE_RX_USECS			(u32)
+        ETHA_COALESCE_RX_MAXFRM			(u32)
+        ETHA_COALESCE_RX_USECS_IRQ		(u32)
+        ETHA_COALESCE_RX_MAXFRM_IRQ		(u32)
+        ETHA_COALESCE_RX_USECS_LOW		(u32)
+        ETHA_COALESCE_RX_MAXFRM_LOW		(u32)
+        ETHA_COALESCE_RX_USECS_HIGH		(u32)
+        ETHA_COALESCE_RX_MAXFRM_HIGH		(u32)
+        ETHA_COALESCE_TX_USECS			(u32)
+        ETHA_COALESCE_TX_MAXFRM			(u32)
+        ETHA_COALESCE_TX_USECS_IRQ		(u32)
+        ETHA_COALESCE_TX_MAXFRM_IRQ		(u32)
+        ETHA_COALESCE_TX_USECS_LOW		(u32)
+        ETHA_COALESCE_TX_MAXFRM_LOW		(u32)
+        ETHA_COALESCE_TX_USECS_HIGH		(u32)
+        ETHA_COALESCE_TX_MAXFRM_HIGH		(u32)
+        ETHA_COALESCE_PKT_RATE_LOW		(u32)
+        ETHA_COALESCE_PKT_RATE_HIGH		(u32)
+        ETHA_COALESCE_RX_USE_ADAPTIVE		(bool)
+        ETHA_COALESCE_TX_USE_ADAPTIVE		(bool)
+        ETHA_COALESCE_RATE_SAMPLE_INTERVAL	(u32)
+        ETHA_COALESCE_STATS_BLOCK_USECS		(u32)
+    ETHA_PARAMS_RING		(nest)		ring parameters
+        ETHA_RING_RX_PENDING			(u32)
+        ETHA_RING_RX_MINI_PENDING		(u32)
+        ETHA_RING_RX_JUMBO_PENDING		(u32)
+        ETHA_RING_TX_PENDING			(u32)
+    ETHA_PARAMS_PAUSE		(nest)		pause parameters
+        ETHA_PAUSE_AUTONEG			(bool)
+        ETHA_PAUSE_RX				(bool)
+        ETHA_PAUSE_TX				(bool)
+    ETHA_PARAMS_CHANNELS	(nest)		channel settings
+        ETHA_CHANNELS_RX_COUNT			(u32)
+        ETHA_CHANNELS_TX_COUNT			(u32)
+        ETHA_CHANNELS_OTHER_COUNT		(u32)
+        ETHA_CHANNELS_COMBINED_COUNT		(u32)
+    ETHA_PARAMS_EEE		(nest)		EEE settings
+        ETHA_EEE_LINK_MODES			(bitset)
+		- change modes for which EEE is advertised
+        ETHA_EEE_ENABLED			(bool)
+        ETHA_EEE_TX_LPI_ENABLED			(bool)
+        ETHA_EEE_TX_LPI_TIMER			(u32)
+    ETHA_PARAMS_FEC		(nest)		FEC parameters
+        ETHA_FEC_MODES				(bitfield32)
+		- change configured FEC encodings
+
 
 Request translation
 -------------------
@@ -431,11 +488,11 @@ ETHTOOL_GLINK			ETHNL_CMD_GET_SETTINGS
 ETHTOOL_GEEPROM			n/a
 ETHTOOL_SEEPROM			n/a
 ETHTOOL_GCOALESCE		ETHNL_CMD_GET_PARAMS
-ETHTOOL_SCOALESCE		n/a
+ETHTOOL_SCOALESCE		ETHNL_CMD_SET_PARAMS
 ETHTOOL_GRINGPARAM		ETHNL_CMD_GET_PARAMS
-ETHTOOL_SRINGPARAM		n/a
+ETHTOOL_SRINGPARAM		ETHNL_CMD_SET_PARAMS
 ETHTOOL_GPAUSEPARAM		ETHNL_CMD_GET_PARAMS
-ETHTOOL_SPAUSEPARAM		n/a
+ETHTOOL_SPAUSEPARAM		ETHNL_CMD_SET_PARAMS
 ETHTOOL_GRXCSUM			ETHNL_CMD_GET_SETTINGS
 ETHTOOL_SRXCSUM			ETHNL_CMD_SET_SETTINGS
 ETHTOOL_GTXCSUM			ETHNL_CMD_GET_SETTINGS
@@ -477,7 +534,7 @@ ETHTOOL_SRXFHINDIR		n/a
 ETHTOOL_GFEATURES		ETHNL_CMD_GET_SETTINGS
 ETHTOOL_SFEATURES		n/a
 ETHTOOL_GCHANNELS		ETHNL_CMD_GET_PARAMS
-ETHTOOL_SCHANNELS		n/a
+ETHTOOL_SCHANNELS		ETHNL_CMD_SET_PARAMS
 ETHTOOL_SET_DUMP		n/a
 ETHTOOL_GET_DUMP_FLAG		n/a
 ETHTOOL_GET_DUMP_DATA		n/a
@@ -485,7 +542,7 @@ ETHTOOL_GET_TS_INFO		n/a
 ETHTOOL_GMODULEINFO		n/a
 ETHTOOL_GMODULEEEPROM		n/a
 ETHTOOL_GEEE			ETHNL_CMD_GET_PARAMS
-ETHTOOL_SEEE			n/a
+ETHTOOL_SEEE			ETHNL_CMD_SET_PARAMS
 ETHTOOL_GRSSH			n/a
 ETHTOOL_SRSSH			n/a
 ETHTOOL_GTUNABLE		n/a
@@ -497,5 +554,5 @@ ETHTOOL_SLINKSETTINGS		ETHNL_CMD_SET_SETTINGS
 ETHTOOL_PHY_GTUNABLE		n/a
 ETHTOOL_PHY_STUNABLE		n/a
 ETHTOOL_GFECPARAM		ETHNL_CMD_GET_PARAMS
-ETHTOOL_SFECPARAM		n/a
+ETHTOOL_SFECPARAM		ETHNL_CMD_SET_PARAMS
 
diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c
index b24a0e045ec0..17fee1ce077b 100644
--- a/net/ethtool/netlink.c
+++ b/net/ethtool/netlink.c
@@ -735,6 +735,7 @@ int ethnl_get_drvinfo(struct sk_buff *skb, struct genl_info *info);
 int ethnl_get_settings(struct sk_buff *skb, struct genl_info *info);
 int ethnl_set_settings(struct sk_buff *skb, struct genl_info *info);
 int ethnl_get_params(struct sk_buff *skb, struct genl_info *info);
+int ethnl_set_params(struct sk_buff *skb, struct genl_info *info);
 
 int ethnl_strset_start(struct netlink_callback *cb);
 int ethnl_drvinfo_start(struct netlink_callback *cb);
@@ -778,6 +779,11 @@ static const struct genl_ops ethtool_genl_ops[] = {
 		.dumpit	= ethnl_dumpit,
 		.done	= ethnl_params_done,
 	},
+	{
+		.cmd	= ETHNL_CMD_SET_PARAMS,
+		.flags	= GENL_UNS_ADMIN_PERM,
+		.doit	= ethnl_set_params,
+	},
 };
 
 static const struct genl_multicast_group ethtool_nl_mcgrps[] = {
diff --git a/net/ethtool/params.c b/net/ethtool/params.c
index 773e13fc1ae6..8cbf33ad81b8 100644
--- a/net/ethtool/params.c
+++ b/net/ethtool/params.c
@@ -577,3 +577,432 @@ void ethnl_params_notify(struct netdev_notifier_ethtool_info *info)
 err_skb:
 	nlmsg_free(skb);
 }
+
+static const struct nla_policy coalesce_policy[ETHA_COALESCE_MAX + 1] = {
+	[ETHA_COALESCE_UNSPEC]			= { .type = NLA_UNSPEC },
+	[ETHA_COALESCE_RX_USECS]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_RX_MAXFRM]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_RX_USECS_IRQ]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_RX_MAXFRM_IRQ]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_RX_USECS_LOW]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_RX_MAXFRM_LOW]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_RX_USECS_HIGH]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_RX_MAXFRM_HIGH]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_TX_USECS]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_TX_MAXFRM]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_TX_USECS_IRQ]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_TX_MAXFRM_IRQ]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_TX_USECS_LOW]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_TX_MAXFRM_LOW]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_TX_USECS_HIGH]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_TX_MAXFRM_HIGH]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_PKT_RATE_LOW]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_PKT_RATE_HIGH]		= { .type = NLA_U32 },
+	[ETHA_COALESCE_RX_USE_ADAPTIVE]		= { .type = NLA_U8 },
+	[ETHA_COALESCE_TX_USE_ADAPTIVE]		= { .type = NLA_U8 },
+	[ETHA_COALESCE_RATE_SAMPLE_INTERVAL]	= { .type = NLA_U32 },
+	[ETHA_COALESCE_STATS_BLOCK_USECS]	= { .type = NLA_U32 },
+};
+
+static int update_coalesce(struct genl_info *info, struct net_device *dev,
+			   struct nlattr *nest)
+{
+	struct nlattr *tb[ETHA_COALESCE_MAX + 1];
+	struct ethtool_coalesce data = {};
+	bool mod = false;
+	int ret;
+
+	if (!nest)
+		return 0;
+	if (!dev->ethtool_ops->get_coalesce || !dev->ethtool_ops->set_coalesce)
+		return -EOPNOTSUPP;
+	ret = dev->ethtool_ops->get_coalesce(dev, &data);
+	if (ret < 0)
+		return ret;
+
+	ret = nla_parse_nested(tb, ETHA_COALESCE_MAX, nest, coalesce_policy,
+			       info->extack);
+	if (ret < 0)
+		return ret;
+
+	if (ethnl_update_u32(&data.rx_coalesce_usecs,
+			     tb[ETHA_COALESCE_RX_USECS]))
+		mod = true;
+	if (ethnl_update_u32(&data.rx_max_coalesced_frames,
+			     tb[ETHA_COALESCE_RX_MAXFRM]))
+		mod = true;
+	if (ethnl_update_u32(&data.rx_coalesce_usecs_irq,
+			     tb[ETHA_COALESCE_RX_USECS_IRQ]))
+		mod = true;
+	if (ethnl_update_u32(&data.rx_max_coalesced_frames_irq,
+			     tb[ETHA_COALESCE_RX_MAXFRM_IRQ]))
+		mod = true;
+	if (ethnl_update_u32(&data.rx_coalesce_usecs_low,
+			     tb[ETHA_COALESCE_RX_USECS_LOW]))
+		mod = true;
+	if (ethnl_update_u32(&data.rx_max_coalesced_frames_low,
+			     tb[ETHA_COALESCE_RX_MAXFRM_LOW]))
+		mod = true;
+	if (ethnl_update_u32(&data.rx_coalesce_usecs_high,
+			     tb[ETHA_COALESCE_RX_USECS_HIGH]))
+		mod = true;
+	if (ethnl_update_u32(&data.rx_max_coalesced_frames_high,
+			     tb[ETHA_COALESCE_RX_MAXFRM_HIGH]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_coalesce_usecs,
+			     tb[ETHA_COALESCE_TX_USECS]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_max_coalesced_frames,
+			     tb[ETHA_COALESCE_TX_MAXFRM]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_coalesce_usecs_irq,
+			     tb[ETHA_COALESCE_TX_USECS_IRQ]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_max_coalesced_frames_irq,
+			     tb[ETHA_COALESCE_TX_MAXFRM_IRQ]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_coalesce_usecs_low,
+			     tb[ETHA_COALESCE_TX_USECS_LOW]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_max_coalesced_frames_low,
+			     tb[ETHA_COALESCE_TX_MAXFRM_LOW]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_coalesce_usecs_high,
+			     tb[ETHA_COALESCE_TX_USECS_HIGH]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_max_coalesced_frames_high,
+			     tb[ETHA_COALESCE_TX_MAXFRM_HIGH]))
+		mod = true;
+	if (ethnl_update_u32(&data.pkt_rate_low,
+			     tb[ETHA_COALESCE_PKT_RATE_LOW]))
+		mod = true;
+	if (ethnl_update_u32(&data.pkt_rate_high,
+			     tb[ETHA_COALESCE_PKT_RATE_HIGH]))
+		mod = true;
+	if (ethnl_update_bool32(&data.use_adaptive_rx_coalesce,
+				tb[ETHA_COALESCE_RX_USE_ADAPTIVE]))
+		mod = true;
+	if (ethnl_update_bool32(&data.use_adaptive_tx_coalesce,
+				tb[ETHA_COALESCE_TX_USE_ADAPTIVE]))
+		mod = true;
+	if (ethnl_update_u32(&data.rate_sample_interval,
+			     tb[ETHA_COALESCE_RATE_SAMPLE_INTERVAL]))
+		mod = true;
+	if (ethnl_update_u32(&data.stats_block_coalesce_usecs,
+			     tb[ETHA_COALESCE_STATS_BLOCK_USECS]))
+		mod = true;
+
+	if (!mod)
+		return 0;
+	ret = dev->ethtool_ops->set_coalesce(dev, &data);
+	return (ret < 0) ? ret : 1;
+}
+
+static const struct nla_policy ring_policy[ETHA_RING_MAX + 1] = {
+	[ETHA_RING_UNSPEC]			= { .type = NLA_UNSPEC },
+	[ETHA_RING_RX_MAX_PENDING]		= { .type = NLA_U32 },
+	[ETHA_RING_RX_MINI_MAX_PENDING]		= { .type = NLA_U32 },
+	[ETHA_RING_RX_JUMBO_MAX_PENDING]	= { .type = NLA_U32 },
+	[ETHA_RING_TX_MAX_PENDING]		= { .type = NLA_U32 },
+	[ETHA_RING_RX_PENDING]			= { .type = NLA_U32 },
+	[ETHA_RING_RX_MINI_PENDING]		= { .type = NLA_U32 },
+	[ETHA_RING_RX_JUMBO_PENDING]		= { .type = NLA_U32 },
+	[ETHA_RING_TX_PENDING]			= { .type = NLA_U32 },
+};
+
+static int update_ring(struct genl_info *info, struct net_device *dev,
+		       struct nlattr *nest)
+{
+	struct nlattr *tb[ETHA_RING_MAX + 1];
+	struct ethtool_ringparam data = {};
+	bool mod = false;
+	int ret;
+
+	if (!nest)
+		return 0;
+	if (!dev->ethtool_ops->get_ringparam ||
+	    !dev->ethtool_ops->set_ringparam)
+		return -EOPNOTSUPP;
+	dev->ethtool_ops->get_ringparam(dev, &data);
+
+	ret = nla_parse_nested(tb, ETHA_RING_MAX, nest, ring_policy,
+			       info->extack);
+	if (ret < 0)
+		return ret;
+	/* read only attributes */
+	if (tb[ETHA_RING_RX_MAX_PENDING] || tb[ETHA_RING_RX_MINI_MAX_PENDING] ||
+	    tb[ETHA_RING_RX_JUMBO_MAX_PENDING] ||
+	    tb[ETHA_RING_TX_MAX_PENDING]) {
+		ETHNL_SET_ERRMSG(info, "attempt to set a read only attribute");
+		return -EINVAL;
+	}
+
+	if (ethnl_update_u32(&data.rx_pending, tb[ETHA_RING_RX_PENDING]))
+		mod = true;
+	if (ethnl_update_u32(&data.rx_mini_pending,
+			     tb[ETHA_RING_RX_MINI_PENDING]))
+		mod = true;
+	if (ethnl_update_u32(&data.rx_jumbo_pending,
+			     tb[ETHA_RING_RX_JUMBO_PENDING]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_pending, tb[ETHA_RING_TX_PENDING]))
+		mod = true;
+	if (!mod)
+		return 0;
+
+	/* ensure new ring parameters are within the maximums */
+	if (data.rx_pending > data.rx_max_pending ||
+	    data.rx_mini_pending > data.rx_mini_max_pending ||
+	    data.rx_jumbo_pending > data.rx_jumbo_max_pending ||
+	    data.tx_pending > data.tx_max_pending) {
+		ETHNL_SET_ERRMSG(info,
+				 "requested ring param value exceeeds maximum");
+		return -EINVAL;
+	}
+
+	ret = dev->ethtool_ops->set_ringparam(dev, &data);
+	return (ret < 0) ? ret : 1;
+}
+
+static const struct nla_policy pause_policy[ETHA_PAUSE_MAX + 1] = {
+	[ETHA_PAUSE_UNSPEC]	= { .type = NLA_UNSPEC },
+	[ETHA_PAUSE_AUTONEG]	= { .type = NLA_U8 },
+	[ETHA_PAUSE_RX]		= { .type = NLA_U8 },
+	[ETHA_PAUSE_TX]		= { .type = NLA_U8 },
+};
+
+static int update_pause(struct genl_info *info, struct net_device *dev,
+			struct nlattr *nest)
+{
+	struct nlattr *tb[ETHA_RING_MAX + 1];
+	struct ethtool_pauseparam data = {};
+	bool mod = false;
+	int ret;
+
+	if (!nest)
+		return 0;
+	if (!dev->ethtool_ops->get_pauseparam ||
+	    !dev->ethtool_ops->set_pauseparam)
+		return -EOPNOTSUPP;
+	dev->ethtool_ops->get_pauseparam(dev, &data);
+
+	ret = nla_parse_nested(tb, ETHA_PAUSE_MAX, nest, pause_policy,
+			       info->extack);
+	if (ret < 0)
+		return ret;
+
+	if (ethnl_update_u32(&data.autoneg, tb[ETHA_PAUSE_AUTONEG]))
+		mod = true;
+	if (ethnl_update_u32(&data.rx_pause, tb[ETHA_PAUSE_RX]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_pause, tb[ETHA_PAUSE_TX]))
+		mod = true;
+
+	if (!mod)
+		return 0;
+	ret = dev->ethtool_ops->set_pauseparam(dev, &data);
+	return (ret < 0) ? ret : 1;
+}
+
+static const struct nla_policy channels_policy[ETHA_CHANNELS_MAX + 1] = {
+	[ETHA_CHANNELS_UNSPEC]		= { .type = NLA_UNSPEC },
+	[ETHA_CHANNELS_MAX_RX]		= { .type = NLA_U32 },
+	[ETHA_CHANNELS_MAX_TX]		= { .type = NLA_U32 },
+	[ETHA_CHANNELS_MAX_OTHER]	= { .type = NLA_U32 },
+	[ETHA_CHANNELS_MAX_COMBINED]	= { .type = NLA_U32 },
+	[ETHA_CHANNELS_RX_COUNT]	= { .type = NLA_U32 },
+	[ETHA_CHANNELS_TX_COUNT]	= { .type = NLA_U32 },
+	[ETHA_CHANNELS_OTHER_COUNT]	= { .type = NLA_U32 },
+	[ETHA_CHANNELS_COMBINED_COUNT]	= { .type = NLA_U32 },
+};
+
+static int update_channels(struct genl_info *info, struct net_device *dev,
+			   struct nlattr *nest)
+{
+	struct nlattr *tb[ETHA_CHANNELS_MAX + 1];
+	struct ethtool_channels data = {};
+	bool mod = false;
+	int ret;
+
+	if (!nest)
+		return 0;
+	if (!dev->ethtool_ops->get_channels ||
+	    !dev->ethtool_ops->set_channels)
+		return -EOPNOTSUPP;
+	dev->ethtool_ops->get_channels(dev, &data);
+
+	ret = nla_parse_nested(tb, ETHA_CHANNELS_MAX, nest, channels_policy,
+			       info->extack);
+	if (ret < 0)
+		return ret;
+	/* read only attributes */
+	if (tb[ETHA_CHANNELS_MAX_RX] || tb[ETHA_CHANNELS_MAX_TX] ||
+	    tb[ETHA_CHANNELS_MAX_OTHER] || tb[ETHA_CHANNELS_MAX_COMBINED]) {
+		ETHNL_SET_ERRMSG(info, "attempt to set a read only attribute");
+		return -EINVAL;
+	}
+
+	if (ethnl_update_u32(&data.rx_count, tb[ETHA_CHANNELS_RX_COUNT]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_count, tb[ETHA_CHANNELS_TX_COUNT]))
+		mod = true;
+	if (ethnl_update_u32(&data.other_count, tb[ETHA_CHANNELS_OTHER_COUNT]))
+		mod = true;
+	if (ethnl_update_u32(&data.combined_count,
+			     tb[ETHA_CHANNELS_COMBINED_COUNT]))
+		mod = true;
+
+	if (!mod)
+		return 0;
+	ret = dev->ethtool_ops->set_channels(dev, &data);
+	return (ret < 0) ? ret : 1;
+}
+
+static const struct nla_policy eee_policy[ETHA_EEE_MAX + 1] = {
+	[ETHA_EEE_UNSPEC]		= { .type = NLA_UNSPEC },
+	[ETHA_EEE_LINK_MODES]		= { .type = NLA_NESTED },
+	[ETHA_EEE_PEER_MODES]		= { .type = NLA_NESTED },
+	[ETHA_EEE_ACTIVE]		= { .type = NLA_U8 },
+	[ETHA_EEE_ENABLED]		= { .type = NLA_U8 },
+	[ETHA_EEE_TX_LPI_ENABLED]	= { .type = NLA_U8 },
+	[ETHA_EEE_TX_LPI_TIMER]		= { .type = NLA_U32 },
+};
+
+static int update_eee(struct genl_info *info, struct net_device *dev,
+		      struct nlattr *nest)
+{
+	struct nlattr *tb[ETHA_EEE_MAX + 1];
+	struct ethtool_eee data = {};
+	bool mod = false;
+	int ret;
+
+	if (!nest)
+		return 0;
+	if (!dev->ethtool_ops->get_eee ||
+	    !dev->ethtool_ops->set_eee)
+		return -EOPNOTSUPP;
+	ret = dev->ethtool_ops->get_eee(dev, &data);
+	if (ret < 0)
+		return ret;
+
+	ret = nla_parse_nested(tb, ETHA_EEE_MAX, nest, eee_policy,
+			       info->extack);
+	if (ret < 0)
+		return ret;
+	/* read only attributes */
+	if (tb[ETHA_EEE_PEER_MODES] || tb[ETHA_EEE_ACTIVE]) {
+		ETHNL_SET_ERRMSG(info, "attempt to set a read only attribute");
+		return -EINVAL;
+	}
+
+	if (ethnl_update_bitset32(&data.advertised, NULL, 32,
+				  tb[ETHA_EEE_LINK_MODES], &ret,
+				  link_mode_names, info))
+		mod = true;
+	if (ret < 0)
+		return ret;
+	if (ethnl_update_bool32(&data.eee_enabled, tb[ETHA_EEE_ENABLED]))
+		mod = true;
+	if (ethnl_update_bool32(&data.tx_lpi_enabled,
+				tb[ETHA_EEE_TX_LPI_ENABLED]))
+		mod = true;
+	if (ethnl_update_u32(&data.tx_lpi_timer, tb[ETHA_EEE_TX_LPI_TIMER]))
+		mod = true;
+
+	if (!mod)
+		return 0;
+	ret = dev->ethtool_ops->set_eee(dev, &data);
+	return (ret < 0) ? ret : 1;
+}
+
+static const struct nla_policy fec_policy[ETHA_FEC_MAX + 1] = {
+	[ETHA_FEC_UNSPEC]		= { .type = NLA_UNSPEC },
+	[ETHA_FEC_MODES]		= { .type = NLA_U32 },
+};
+
+static int update_fec(struct genl_info *info, struct net_device *dev,
+		      struct nlattr *nest)
+{
+	struct nlattr *tb[ETHA_FEC_MAX + 1];
+	struct ethtool_fecparam data = {};
+	bool mod = false;
+	int ret;
+
+	if (!nest)
+		return 0;
+	if (!dev->ethtool_ops->get_fecparam ||
+	    !dev->ethtool_ops->set_fecparam)
+		return -EOPNOTSUPP;
+	ret = dev->ethtool_ops->get_fecparam(dev, &data);
+	if (ret < 0)
+		return ret;
+
+	ret = nla_parse_nested(tb, ETHA_FEC_MAX, nest, fec_policy,
+			       info->extack);
+	if (ret < 0)
+		return ret;
+
+	if (ethnl_update_bitfield32(&data.fec, tb[ETHA_FEC_MODES]))
+		mod = true;
+
+	if (!mod)
+		return 0;
+	ret = dev->ethtool_ops->set_fecparam(dev, &data);
+	return (ret < 0) ? ret : 1;
+}
+
+int ethnl_set_params(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nlattr *tb[ETHA_PARAMS_MAX + 1];
+	struct net_device *dev;
+	u32 req_mask = 0;
+	int ret;
+
+	ret = genlmsg_parse(info->nlhdr, &ethtool_genl_family, tb,
+			    ETHA_PARAMS_MAX, params_policy, info->extack);
+	if (ret < 0)
+		return ret;
+	dev = ethnl_dev_get(info, tb[ETHA_PARAMS_DEV]);
+	if (IS_ERR(dev))
+		return PTR_ERR(dev);
+	rtnl_lock();
+
+	ret = update_coalesce(info, dev, tb[ETHA_PARAMS_COALESCE]);
+	if (ret < 0)
+		goto out_unlock;
+	if (ret)
+		req_mask |= ETH_PARAMS_IM_COALESCE;
+	ret = update_ring(info, dev, tb[ETHA_PARAMS_RING]);
+	if (ret < 0)
+		goto out_unlock;
+	if (ret)
+		req_mask |= ETH_PARAMS_IM_RING;
+	ret = update_pause(info, dev, tb[ETHA_PARAMS_PAUSE]);
+	if (ret < 0)
+		goto out_unlock;
+	if (ret)
+		req_mask |= ETH_PARAMS_IM_PAUSE;
+	ret = update_channels(info, dev, tb[ETHA_PARAMS_CHANNELS]);
+	if (ret < 0)
+		goto out_unlock;
+	if (ret)
+		req_mask |= ETH_PARAMS_IM_CHANNELS;
+	ret = update_eee(info, dev, tb[ETHA_PARAMS_EEE]);
+	if (ret < 0)
+		goto out_unlock;
+	if (ret)
+		req_mask |= ETH_PARAMS_IM_EEE;
+	ret = update_fec(info, dev, tb[ETHA_PARAMS_FEC]);
+	if (ret < 0)
+		goto out_unlock;
+	if (ret)
+		req_mask |= ETH_PARAMS_IM_FEC;
+
+	ret = 0;
+out_unlock:
+	if (req_mask)
+		ethnl_notify(dev, NULL, ETHNL_CMD_SET_PARAMS, req_mask);
+	rtnl_unlock();
+	dev_put(dev);
+	return ret;
+}
-- 
2.18.0