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Message-Id: <12192c66beef43b40f50714b99251bb405bd0cbe.1513000306.git.mkubecek@suse.cz>
Date: Mon, 11 Dec 2017 14:54:21 +0100 (CET)
From: Michal Kubecek <mkubecek@...e.cz>
To: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Subject: [RFC PATCH 7/9] ethtool: implement SET_SETTINGS message
Sets the information provided by ETHTOOL_SLINKSETTINGS, ETHTOOL_SWOL and
ETHTOOL_SMSGLVL. Unlike with ioctl(), userspace can send only some
attributes so that we only need to call ethtool_ops callbacks which we
really need (and the "set" callback is only called when we actually changed
some setting).
Signed-off-by: Michal Kubecek <mkubecek@...e.cz>
---
Documentation/networking/ethtool-netlink.txt | 42 +-
net/core/ethtool_netlink.c | 547 +++++++++++++++++++++++++++
2 files changed, 584 insertions(+), 5 deletions(-)
diff --git a/Documentation/networking/ethtool-netlink.txt b/Documentation/networking/ethtool-netlink.txt
index 7aabc87c9f09..187fab33f721 100644
--- a/Documentation/networking/ethtool-netlink.txt
+++ b/Documentation/networking/ethtool-netlink.txt
@@ -110,7 +110,7 @@ List of message types
ETHTOOL_CMD_GET_DRVINFO
ETHTOOL_CMD_SET_DRVINFO response only
ETHTOOL_CMD_GET_SETTINGS
- ETHTOOL_CMD_SET_SETTINGS response only (for now)
+ ETHTOOL_CMD_SET_SETTINGS
All constants use ETHTOOL_CMD_ prefix followed by "GET", "SET" or "ACT" to
indicate the type.
@@ -199,6 +199,38 @@ is only provided by kernel in response to privileged (netns CAP_NET_ADMIN)
requests.
+SET_SETTINGS
+------------
+
+SET_SETTINGS request allows setting some of the data reported by GET_SETTINGS.
+Request flags, info_mask and index are ignored. These attributes are allowed
+to be passed with SET_SETTINGS request:
+
+ ETHA_SETTINGS_SPEED (u32) link speed (Mb/s)
+ ETHA_SETTINGS_DUPLEX (u8) duplex mode
+ ETHA_SETTINGS_PORT (u8) physical port
+ ETHA_SETTINGS_PHYADDR (u8) MDIO address of phy
+ ETHA_SETTINGS_AUTONEG (u8) autoneotiation status
+ ETHA_SETTINGS_TP_MDIX_CTRL (u8) MDI(-X) control
+ ETHA_SETTINGS_WOL_MODES (bitfield32) wake-on-lan modes
+ ETHA_SETTINGS_SOPASS (binary) SecureOn(tm) password
+ ETHA_SETTINGS_MSGLVL (bitfield32) debug level
+ ETHA_SETTINGS_LINK_MODES (bitset) device link modes
+
+For both bitfield32 types, value and selector work the usual way, i.e. bits
+set in selector are set to corresponding bits from value and the rest is
+preserved. In a similar fashion, ETHA_SETTINGS_LINK_MODES allows setting
+advertised link modes.
+
+If autonegotiation is on (either set now or kept from before), advertised
+modes are not changed (no ETHA_SETTINGS_LINK_MODES attribute) and at least one
+of speed and duplex is specified, kernel adjusts advertised modes to all
+supported modes matching speed, duplex or both (whatever is specified). This
+autoselection is done on ethtool side with ioctl interface, netlink interface
+is supposed to allow requesting changes without knowing what exactly kernel
+supports.
+
+
Request translation
-------------------
@@ -209,13 +241,13 @@ have their netlink replacement yet.
ioctl command netlink command
---------------------------------------------------------------------
ETHTOOL_GSET ETHTOOL_CMD_GET_SETTINGS
-ETHTOOL_SSET n/a
+ETHTOOL_SSET ETHTOOL_CMD_SET_SETTINGS
ETHTOOL_GDRVINFO ETHTOOL_CMD_GET_DRVINFO
ETHTOOL_GREGS n/a
ETHTOOL_GWOL ETHTOOL_CMD_GET_SETTINGS
-ETHTOOL_SWOL n/a
+ETHTOOL_SWOL ETHTOOL_CMD_SET_SETTINGS
ETHTOOL_GMSGLVL ETHTOOL_CMD_GET_SETTINGS
-ETHTOOL_SMSGLVL n/a
+ETHTOOL_SMSGLVL ETHTOOL_CMD_SET_SETTINGS
ETHTOOL_NWAY_RST n/a
ETHTOOL_GLINK ETHTOOL_CMD_GET_SETTINGS
ETHTOOL_GEEPROM n/a
@@ -283,7 +315,7 @@ ETHTOOL_STUNABLE n/a
ETHTOOL_GPHYSTATS n/a
ETHTOOL_PERQUEUE n/a
ETHTOOL_GLINKSETTINGS ETHTOOL_CMD_GET_SETTINGS
-ETHTOOL_SLINKSETTINGS n/a
+ETHTOOL_SLINKSETTINGS ETHTOOL_CMD_SET_SETTINGS
ETHTOOL_PHY_GTUNABLE n/a
ETHTOOL_PHY_STUNABLE n/a
ETHTOOL_GFECPARAM n/a
diff --git a/net/core/ethtool_netlink.c b/net/core/ethtool_netlink.c
index 0c2bed7850bc..4b14a02be12a 100644
--- a/net/core/ethtool_netlink.c
+++ b/net/core/ethtool_netlink.c
@@ -67,6 +67,222 @@ static const char *const link_mode_names[] = {
[ETHTOOL_LINK_MODE_FEC_BASER_BIT] = "BASER",
};
+struct link_mode_info {
+ int speed;
+ u8 duplex;
+};
+
+static const struct link_mode_info link_mode_params[] = {
+ [ETHTOOL_LINK_MODE_10baseT_Half_BIT] = {
+ .speed = 10,
+ .duplex = DUPLEX_HALF,
+ },
+ [ETHTOOL_LINK_MODE_10baseT_Full_BIT] = {
+ .speed = 10,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_100baseT_Half_BIT] = {
+ .speed = 100,
+ .duplex = DUPLEX_HALF,
+ },
+ [ETHTOOL_LINK_MODE_100baseT_Full_BIT] = {
+ .speed = 100,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_1000baseT_Half_BIT] = {
+ .speed = 1000,
+ .duplex = DUPLEX_HALF,
+ },
+ [ETHTOOL_LINK_MODE_1000baseT_Full_BIT] = {
+ .speed = 1000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_Autoneg_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_TP_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_AUI_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_MII_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_FIBRE_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_BNC_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_10000baseT_Full_BIT] = {
+ .speed = 10000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_Pause_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_Asym_Pause_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_2500baseX_Full_BIT] = {
+ .speed = 2500,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_Backplane_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_1000baseKX_Full_BIT] = {
+ .speed = 1000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT] = {
+ .speed = 10000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_10000baseKR_Full_BIT] = {
+ .speed = 10000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_10000baseR_FEC_BIT] = {
+ .speed = 10000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT] = {
+ .speed = 20000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT] = {
+ .speed = 20000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT] = {
+ .speed = 40000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT] = {
+ .speed = 40000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT] = {
+ .speed = 40000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT] = {
+ .speed = 40000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT] = {
+ .speed = 56000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT] = {
+ .speed = 56000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT] = {
+ .speed = 56000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT] = {
+ .speed = 56000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_25000baseCR_Full_BIT] = {
+ .speed = 25000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_25000baseKR_Full_BIT] = {
+ .speed = 25000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_25000baseSR_Full_BIT] = {
+ .speed = 25000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT] = {
+ .speed = 50000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT] = {
+ .speed = 50000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT] = {
+ .speed = 100000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT] = {
+ .speed = 100000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT] = {
+ .speed = 100000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT] = {
+ .speed = 100000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT] = {
+ .speed = 50000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_1000baseX_Full_BIT] = {
+ .speed = 1000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_10000baseCR_Full_BIT] = {
+ .speed = 10000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_10000baseSR_Full_BIT] = {
+ .speed = 10000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_10000baseLR_Full_BIT] = {
+ .speed = 10000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT] = {
+ .speed = 10000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_10000baseER_Full_BIT] = {
+ .speed = 10000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_2500baseT_Full_BIT] = {
+ .speed = 2500,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_5000baseT_Full_BIT] = {
+ .speed = 5000,
+ .duplex = DUPLEX_FULL,
+ },
+ [ETHTOOL_LINK_MODE_FEC_NONE_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_FEC_RS_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+ [ETHTOOL_LINK_MODE_FEC_BASER_BIT] = {
+ .speed = SPEED_UNKNOWN,
+ .duplex = DUPLEX_UNKNOWN,
+ },
+};
+
/* misc helper functions */
static int ethnl_str_size(const char *s)
@@ -662,6 +878,34 @@ static int ethnl_get_drvinfo(struct sk_buff *skb, struct genl_info *info)
/* GET_SETTINGS */
+/* We want to allow ~0 as selector for backward compatibility (to just set
+ * given set of modes, whatever kernel supports) so that we allow all bits
+ * on validation and do our own sanity check later.
+ */
+static u32 all_bits = ~(u32)0;
+
+static const struct nla_policy settings_policy[ETHA_SETTINGS_MAX + 1] = {
+ [ETHA_SETTINGS_UNSPEC] = { .type = NLA_UNSPEC },
+ [ETHA_SETTINGS_SPEED] = { .type = NLA_U32 },
+ [ETHA_SETTINGS_DUPLEX] = { .type = NLA_U8 },
+ [ETHA_SETTINGS_PORT] = { .type = NLA_U8 },
+ [ETHA_SETTINGS_PHYADDR] = { .type = NLA_U8 },
+ [ETHA_SETTINGS_AUTONEG] = { .type = NLA_U8 },
+ [ETHA_SETTINGS_MDIO_SUPPORT] = { .type = NLA_BITFIELD32 },
+ [ETHA_SETTINGS_TP_MDIX] = { .type = NLA_U8 },
+ [ETHA_SETTINGS_TP_MDIX_CTRL] = { .type = NLA_U8 },
+ [ETHA_SETTINGS_TRANSCEIVER] = { .type = NLA_U8 },
+ [ETHA_SETTINGS_WOL_MODES] = { .type = NLA_BITFIELD32,
+ .validation_data = &all_bits },
+ [ETHA_SETTINGS_SOPASS] = { .type = NLA_BINARY,
+ .len = SOPASS_MAX },
+ [ETHA_SETTINGS_MSGLVL] = { .type = NLA_BITFIELD32,
+ .validation_data = &all_bits },
+ [ETHA_SETTINGS_LINK_MODES] = { .type = NLA_NESTED },
+ [ETHA_SETTINGS_PEER_MODES] = { .type = NLA_NESTED },
+ [ETHA_SETTINGS_LINK] = { .type = NLA_FLAG },
+};
+
/* To keep things simple, reserve space for some attributes which may not
* be added to the message (e.g. ETHA_SETTINGS_SOPASS); therefore the length
* returned may be bigger than the actual length of the message sent
@@ -727,6 +971,24 @@ static int ethnl_get_link_ksettings(struct genl_info *info,
return ret;
}
+static int ethnl_get_legacy_settings(struct genl_info *info,
+ struct net_device *dev,
+ struct ethtool_cmd *cmd)
+{
+ int ret;
+
+ if (!dev->ethtool_ops->get_settings) {
+ /* we already tried ->get_link_ksettings */
+ GENL_SET_ERR_MSG(info, "link settings retrieval unsupported");
+ return -EOPNOTSUPP;
+ }
+ ret = dev->ethtool_ops->get_settings(dev, cmd);
+ if (ret < 0)
+ GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
+
+ return ret;
+}
+
static int ethnl_get_wol(struct genl_info *info, struct net_device *dev,
struct ethtool_wolinfo *wolinfo)
{
@@ -737,6 +999,79 @@ static int ethnl_get_wol(struct genl_info *info, struct net_device *dev,
return ret;
}
+static int ethnl_set_link_ksettings(struct genl_info *info,
+ struct net_device *dev,
+ struct ethtool_link_ksettings *ksettings)
+{
+ int ret = dev->ethtool_ops->set_link_ksettings(dev, ksettings);
+
+ if (ret < 0)
+ GENL_SET_ERR_MSG(info, "link settings update failed");
+ return ret;
+}
+
+static int ethnl_set_legacy_settings(struct genl_info *info,
+ struct net_device *dev,
+ struct ethtool_cmd *cmd)
+{
+ int ret;
+
+ if (!dev->ethtool_ops->set_settings) {
+ /* we already tried ->set_link_ksettings */
+ GENL_SET_ERR_MSG(info, "link settings update unsupported");
+ return -EOPNOTSUPP;
+ }
+ ret = dev->ethtool_ops->set_settings(dev, cmd);
+ if (ret < 0)
+ GENL_SET_ERR_MSG(info, "link settings update failed");
+
+ return ret;
+}
+
+static int ethnl_set_wol(struct genl_info *info, struct net_device *dev,
+ struct ethtool_wolinfo *wolinfo)
+{
+ int ret = dev->ethtool_ops->set_wol(dev, wolinfo);
+
+ if (ret < 0)
+ GENL_SET_ERR_MSG(info, "wol info update failed");
+ return ret;
+}
+
+/* Set advertised link modes to all supported modes matching requested speed
+ * and duplex values. Called when autonegotiation is on, speed or duplex is
+ * requested but no link mode change. This is done in userspace with ioctl()
+ * interface, move it into kernel for netlink.
+ * Returns true if advertised modes bitmap was modified.
+ */
+static bool auto_link_modes(unsigned long *supported,
+ unsigned long *advertising, unsigned int nbits,
+ struct nlattr *speed_attr,
+ struct nlattr *duplex_attr)
+{
+ u8 duplex = duplex_attr ? nla_get_u8(duplex_attr) : DUPLEX_UNKNOWN;
+ u32 speed = speed_attr ? nla_get_u32(speed_attr) : SPEED_UNKNOWN;
+ DECLARE_BITMAP(old_adv, nbits);
+ unsigned int i;
+
+ bitmap_copy(old_adv, advertising, nbits);
+
+ for (i = 0; i < nbits; i++) {
+ const struct link_mode_info *info = &link_mode_params[i];
+
+ if (info->speed == SPEED_UNKNOWN)
+ continue;
+ if (test_bit(i, supported) &&
+ (!speed_attr || info->speed == speed) &&
+ (!duplex_attr || info->duplex == duplex))
+ set_bit(i, advertising);
+ else
+ clear_bit(i, advertising);
+ }
+
+ return !bitmap_equal(old_adv, advertising, nbits);
+}
+
static int ethnl_get_settings(struct sk_buff *skb, struct genl_info *info)
{
struct ethtool_link_ksettings ksettings = {};
@@ -897,6 +1232,212 @@ static int ethnl_get_settings(struct sk_buff *skb, struct genl_info *info)
return ret;
}
+/* Update device settings using ->set_link_ksettings() callback */
+static int ethnl_update_ksettings(struct genl_info *info, struct nlattr **tb,
+ struct net_device *dev)
+{
+ struct ethtool_link_ksettings ksettings = {};
+ struct ethtool_link_settings *lsettings;
+ bool mod = false;
+ int ret;
+
+ rtnl_lock();
+ ret = ethnl_get_link_ksettings(info, dev, &ksettings);
+ if (ret < 0)
+ goto out_unlock;
+ lsettings = &ksettings.base;
+
+ mod = false;
+ if (ethnl_update_u32(&lsettings->speed, tb[ETHA_SETTINGS_SPEED]))
+ mod = true;
+ if (ethnl_update_u8(&lsettings->duplex, tb[ETHA_SETTINGS_DUPLEX]))
+ mod = true;
+ if (ethnl_update_u8(&lsettings->port, tb[ETHA_SETTINGS_PORT]))
+ mod = true;
+ if (ethnl_update_u8(&lsettings->phy_address, tb[ETHA_SETTINGS_PHYADDR]))
+ mod = true;
+ if (ethnl_update_u8(&lsettings->autoneg, tb[ETHA_SETTINGS_AUTONEG]))
+ mod = true;
+ if (ethnl_update_u8(&lsettings->eth_tp_mdix_ctrl,
+ tb[ETHA_SETTINGS_TP_MDIX_CTRL]))
+ mod = true;
+ if (ethnl_update_bitset(ksettings.link_modes.advertising,
+ __ETHTOOL_LINK_MODE_MASK_NBITS,
+ tb[ETHA_SETTINGS_LINK_MODES],
+ &ret, link_mode_names, info))
+ mod = true;
+ if (ret < 0)
+ goto out_unlock;
+
+ if (!tb[ETHA_SETTINGS_LINK_MODES] && lsettings->autoneg &&
+ (tb[ETHA_SETTINGS_SPEED] || tb[ETHA_SETTINGS_DUPLEX])) {
+ if (auto_link_modes(ksettings.link_modes.supported,
+ ksettings.link_modes.advertising,
+ __ETHTOOL_LINK_MODE_MASK_NBITS,
+ tb[ETHA_SETTINGS_SPEED],
+ tb[ETHA_SETTINGS_DUPLEX]))
+ mod = true;
+ }
+
+ if (mod) {
+ ret = ethnl_set_link_ksettings(info, dev, &ksettings);
+ if (ret < 0)
+ goto out_unlock;
+ }
+
+ ret = 0;
+out_unlock:
+ rtnl_unlock();
+ return ret;
+}
+
+/* Update legacy settings using ->set_settings() callback. */
+static int ethnl_update_lsettings(struct genl_info *info, struct nlattr **tb,
+ struct net_device *dev)
+{
+ struct ethtool_cmd cmd = {};
+ DECLARE_BITMAP(advertising, sizeof(u32));
+ DECLARE_BITMAP(supported, sizeof(u32));
+ bool mod = false;
+ u32 speed;
+ int ret;
+
+ rtnl_lock();
+ ret = ethnl_get_legacy_settings(info, dev, &cmd);
+ if (ret < 0)
+ goto out_unlock;
+ bitmap_from_u32array(supported, sizeof(u32), &cmd.supported, 1);
+ bitmap_from_u32array(advertising, sizeof(u32), &cmd.advertising, 1);
+
+ mod = false;
+ speed = ethtool_cmd_speed(&cmd);
+ if (ethnl_update_u32(&speed, tb[ETHA_SETTINGS_SPEED])) {
+ ethtool_cmd_speed_set(&cmd, speed);
+ mod = true;
+ }
+ if (ethnl_update_u8(&cmd.duplex, tb[ETHA_SETTINGS_DUPLEX]))
+ mod = true;
+ if (ethnl_update_u8(&cmd.port, tb[ETHA_SETTINGS_PORT]))
+ mod = true;
+ if (ethnl_update_u8(&cmd.phy_address, tb[ETHA_SETTINGS_PHYADDR]))
+ mod = true;
+ if (ethnl_update_u8(&cmd.autoneg, tb[ETHA_SETTINGS_AUTONEG]))
+ mod = true;
+ if (ethnl_update_u8(&cmd.eth_tp_mdix_ctrl,
+ tb[ETHA_SETTINGS_TP_MDIX_CTRL]))
+ mod = true;
+ if (ethnl_update_bitset(advertising, sizeof(cmd.advertising),
+ tb[ETHA_SETTINGS_LINK_MODES],
+ &ret, link_mode_names, info)) {
+ bitmap_to_u32array(&cmd.advertising, 1, advertising,
+ sizeof(cmd.advertising));
+ mod = true;
+ }
+ if (ret < 0)
+ goto out_unlock;
+
+ if (!tb[ETHA_SETTINGS_LINK_MODES] && cmd.autoneg &&
+ (tb[ETHA_SETTINGS_SPEED] || tb[ETHA_SETTINGS_DUPLEX])) {
+ if (auto_link_modes(supported, advertising,
+ sizeof(cmd.advertising),
+ tb[ETHA_SETTINGS_SPEED],
+ tb[ETHA_SETTINGS_DUPLEX])) {
+ bitmap_to_u32array(&cmd.advertising, 1, advertising,
+ sizeof(cmd.advertising));
+ mod = true;
+ }
+ }
+
+ if (mod) {
+ ret = ethnl_set_legacy_settings(info, dev, &cmd);
+ if (ret < 0)
+ goto out_unlock;
+ }
+
+ ret = 0;
+out_unlock:
+ rtnl_unlock();
+ return ret;
+}
+
+static int ethnl_set_settings(struct sk_buff *skb, struct genl_info *info)
+{
+ struct nlattr *tb[ETHA_SETTINGS_MAX + 1];
+ struct ethnlmsghdr *ehdr;
+ struct ethtool_wolinfo wolinfo = {};
+ struct net_device *dev;
+ bool mod;
+ int ret;
+
+ ehdr = info->userhdr;
+ dev = ethnl_dev_get(info);
+ if (IS_ERR(dev))
+ return PTR_ERR(dev);
+
+ ret = genlmsg_parse(info->nlhdr, ðtool_genl_family, tb,
+ ETHA_SETTINGS_MAX, settings_policy, info->extack);
+ if (ret < 0)
+ goto err_putdev;
+
+ /* read only attributes */
+ ret = -EINVAL;
+ if (tb[ETHA_SETTINGS_MDIO_SUPPORT] || tb[ETHA_SETTINGS_TP_MDIX] ||
+ tb[ETHA_SETTINGS_TRANSCEIVER] || tb[ETHA_SETTINGS_PEER_MODES] ||
+ tb[ETHA_SETTINGS_LINK]) {
+ GENL_SET_ERR_MSG(info, "attempt to set a read only attribute");
+ goto err_putdev;
+ }
+
+ if (tb[ETHA_SETTINGS_SPEED] || tb[ETHA_SETTINGS_DUPLEX] ||
+ tb[ETHA_SETTINGS_PORT] || tb[ETHA_SETTINGS_PHYADDR] ||
+ tb[ETHA_SETTINGS_AUTONEG] || tb[ETHA_SETTINGS_TP_MDIX_CTRL] ||
+ tb[ETHA_SETTINGS_LINK_MODES]) {
+ if (dev->ethtool_ops->get_link_ksettings)
+ ret = ethnl_update_ksettings(info, tb, dev);
+ else
+ ret = ethnl_update_lsettings(info, tb, dev);
+ if (ret < 0)
+ goto err_putdev;
+ }
+ if (tb[ETHA_SETTINGS_WOL_MODES] || tb[ETHA_SETTINGS_SOPASS]) {
+ ret = ethnl_get_wol(info, dev, &wolinfo);
+ if (ret < 0)
+ goto err_putdev;
+
+ mod = false;
+ if (ethnl_update_bitfield32(&wolinfo.wolopts,
+ tb[ETHA_SETTINGS_WOL_MODES]))
+ mod = true;
+ if (ethnl_update_binary(wolinfo.sopass, SOPASS_MAX,
+ tb[ETHA_SETTINGS_SOPASS]))
+ mod = true;
+ if (mod) {
+ ret = ethnl_set_wol(info, dev, &wolinfo);
+ if (ret < 0)
+ goto err_putdev;
+ }
+ }
+ if (tb[ETHA_SETTINGS_MSGLVL]) {
+ u32 msglvl;
+
+ ret = -EOPNOTSUPP;
+ if (!dev->ethtool_ops->get_msglevel ||
+ !dev->ethtool_ops->set_msglevel) {
+ GENL_SET_ERR_MSG(info,
+ "device does not provide msglvl access");
+ goto err_putdev;
+ }
+ msglvl = dev->ethtool_ops->get_msglevel(dev);
+ if (ethnl_update_bitfield32(&msglvl, tb[ETHA_SETTINGS_MSGLVL]))
+ dev->ethtool_ops->set_msglevel(dev, msglvl);
+ }
+
+ ret = 0;
+err_putdev:
+ dev_put(dev);
+ return ret;
+}
+
/* genetlink paperwork */
static const struct genl_ops ethtool_genl_ops[] = {
@@ -908,6 +1449,12 @@ static const struct genl_ops ethtool_genl_ops[] = {
.cmd = ETHTOOL_CMD_GET_SETTINGS,
.doit = ethnl_get_settings,
},
+ {
+ .cmd = ETHTOOL_CMD_SET_SETTINGS,
+ .flags = GENL_UNS_ADMIN_PERM,
+ .policy = settings_policy,
+ .doit = ethnl_set_settings,
+ },
};
static struct genl_family ethtool_genl_family = {
--
2.15.1
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