ethtool: wire up set policies to ops

Similarly to get commands wire up the policies of set commands
to get parsing by the core and policy dumps.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ethtool/linkmodes.c b/net/ethtool/linkmodes.c
index 8e0b4a1..77f0096 100644
--- a/net/ethtool/linkmodes.c
+++ b/net/ethtool/linkmodes.c
@@ -274,8 +274,8 @@ static const struct link_mode_info link_mode_params[] = {
 	__DEFINE_LINK_MODE_PARAMS(100, FX, Full),
 };
 
-static const struct nla_policy
-linkmodes_set_policy[ETHTOOL_A_LINKMODES_MAX + 1] = {
+const struct nla_policy
+ethnl_linkmodes_set_policy[ETHTOOL_A_LINKMODES_MAX + 1] = {
 	[ETHTOOL_A_LINKMODES_UNSPEC]		= { .type = NLA_REJECT },
 	[ETHTOOL_A_LINKMODES_HEADER]		= { .type = NLA_NESTED },
 	[ETHTOOL_A_LINKMODES_AUTONEG]		= { .type = NLA_U8 },
@@ -390,18 +390,13 @@ static int ethnl_update_linkmodes(struct genl_info *info, struct nlattr **tb,
 
 int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info)
 {
-	struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1];
 	struct ethtool_link_ksettings ksettings = {};
 	struct ethnl_req_info req_info = {};
+	struct nlattr **tb = info->attrs;
 	struct net_device *dev;
 	bool mod = false;
 	int ret;
 
-	ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
-			  ETHTOOL_A_LINKMODES_MAX, linkmodes_set_policy,
-			  info->extack);
-	if (ret < 0)
-		return ret;
 	ret = ethnl_parse_header_dev_get(&req_info,
 					 tb[ETHTOOL_A_LINKMODES_HEADER],
 					 genl_info_net(info), info->extack,