add ax88772C AX88772C_eeprom_tools

hc

2024-05-10 61598093bbdd283a7edc367d900f223070ead8d2

 kernel/drivers/net/ieee802154/mac802154_hwsim.c
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@@ -1,17 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * HWSIM IEEE 802.15.4 interface
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  *
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  * (C) 2018 Mojatau, Alexander Aring <aring@mojatau.com>
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  * Copyright 2007-2012 Siemens AG
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2
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- * as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  *
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  * Based on fakelb, original Written by:
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  * Sergey Lapin <slapin@ossfans.org>
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@@ -36,8 +28,6 @@
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 static LIST_HEAD(hwsim_phys);
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 static DEFINE_MUTEX(hwsim_phys_lock);
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-
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-static LIST_HEAD(hwsim_ifup_phys);
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 static struct platform_device *mac802154hwsim_dev;
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@@ -85,7 +75,6 @@
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 	struct list_head edges;
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 	struct list_head list;
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-	struct list_head list_ifup;
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 };
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 static int hwsim_add_one(struct genl_info *info, struct device *dev,
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@@ -159,9 +148,6 @@
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 	struct hwsim_phy *phy = hw->priv;
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 	phy->suspended = false;
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-	list_add_rcu(&phy->list_ifup, &hwsim_ifup_phys);
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-	synchronize_rcu();
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-
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 	return 0;
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 }
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@@ -170,8 +156,6 @@
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 	struct hwsim_phy *phy = hw->priv;
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 	phy->suspended = true;
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-	list_del_rcu(&phy->list_ifup);
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-	synchronize_rcu();
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 }
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 static int
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@@ -235,14 +219,16 @@
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 		return 0;
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 	}
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-	nl_edges = nla_nest_start(skb, MAC802154_HWSIM_ATTR_RADIO_EDGES);
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+	nl_edges = nla_nest_start_noflag(skb,
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+					 MAC802154_HWSIM_ATTR_RADIO_EDGES);
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 	if (!nl_edges) {
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 		rcu_read_unlock();
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 		return -ENOBUFS;
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 	}
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 	list_for_each_entry_rcu(e, &phy->edges, list) {
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-		nl_edge = nla_nest_start(skb, MAC802154_HWSIM_ATTR_RADIO_EDGE);
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+		nl_edge = nla_nest_start_noflag(skb,
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+						MAC802154_HWSIM_ATTR_RADIO_EDGE);
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 		if (!nl_edge) {
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 			rcu_read_unlock();
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 			nla_nest_cancel(skb, nl_edges);
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@@ -436,9 +422,7 @@
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 	    !info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE])
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 		return -EINVAL;
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-	if (nla_parse_nested(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX,
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-			     info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE],
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-			     hwsim_edge_policy, NULL))
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+	if (nla_parse_nested_deprecated(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX, info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE], hwsim_edge_policy, NULL))
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 		return -EINVAL;
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 	if (!edge_attrs[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID])
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@@ -500,9 +484,7 @@
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 	    !info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE])
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 		return -EINVAL;
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-	if (nla_parse_nested(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX,
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-			     info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE],
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-			     hwsim_edge_policy, NULL))
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+	if (nla_parse_nested_deprecated(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX, info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE], hwsim_edge_policy, NULL))
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 		return -EINVAL;
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 	if (!edge_attrs[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID])
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@@ -540,7 +522,7 @@
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 static int hwsim_set_edge_lqi(struct sk_buff *msg, struct genl_info *info)
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 {
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 	struct nlattr *edge_attrs[MAC802154_HWSIM_EDGE_ATTR_MAX + 1];
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-	struct hwsim_edge_info *einfo;
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+	struct hwsim_edge_info *einfo, *einfo_old;
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 	struct hwsim_phy *phy_v0;
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 	struct hwsim_edge *e;
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 	u32 v0, v1;
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@@ -550,9 +532,7 @@
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 	    !info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE])
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 		return -EINVAL;
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-	if (nla_parse_nested(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX,
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-			     info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE],
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-			     hwsim_edge_policy, NULL))
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+	if (nla_parse_nested_deprecated(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX, info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE], hwsim_edge_policy, NULL))
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 		return -EINVAL;
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 	if (!edge_attrs[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID] ||
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@@ -580,8 +560,10 @@
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 	list_for_each_entry_rcu(e, &phy_v0->edges, list) {
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 		if (e->endpoint->idx == v1) {
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 			einfo->lqi = lqi;
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-			rcu_assign_pointer(e->info, einfo);
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+			einfo_old = rcu_replace_pointer(e->info, einfo,
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+							lockdep_is_held(&hwsim_phys_lock));
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 			rcu_read_unlock();
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+			kfree_rcu(einfo_old, rcu);
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 			mutex_unlock(&hwsim_phys_lock);
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 			return 0;
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 		}
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@@ -603,40 +585,40 @@
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 };
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 /* Generic Netlink operations array */
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-static const struct genl_ops hwsim_nl_ops[] = {
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+static const struct genl_small_ops hwsim_nl_ops[] = {
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 	{
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 		.cmd = MAC802154_HWSIM_CMD_NEW_RADIO,
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-		.policy = hwsim_genl_policy,
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+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
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 		.doit = hwsim_new_radio_nl,
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 		.flags = GENL_UNS_ADMIN_PERM,
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 	},
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 	{
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 		.cmd = MAC802154_HWSIM_CMD_DEL_RADIO,
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-		.policy = hwsim_genl_policy,
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+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
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 		.doit = hwsim_del_radio_nl,
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 		.flags = GENL_UNS_ADMIN_PERM,
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 	},
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 	{
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 		.cmd = MAC802154_HWSIM_CMD_GET_RADIO,
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-		.policy = hwsim_genl_policy,
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+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
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 		.doit = hwsim_get_radio_nl,
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 		.dumpit = hwsim_dump_radio_nl,
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 	},
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 	{
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 		.cmd = MAC802154_HWSIM_CMD_NEW_EDGE,
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-		.policy = hwsim_genl_policy,
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+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
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 		.doit = hwsim_new_edge_nl,
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 		.flags = GENL_UNS_ADMIN_PERM,
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 	},
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 	{
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 		.cmd = MAC802154_HWSIM_CMD_DEL_EDGE,
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-		.policy = hwsim_genl_policy,
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+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
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 		.doit = hwsim_del_edge_nl,
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 		.flags = GENL_UNS_ADMIN_PERM,
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 	},
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 	{
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 		.cmd = MAC802154_HWSIM_CMD_SET_EDGE,
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-		.policy = hwsim_genl_policy,
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+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
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 		.doit = hwsim_set_edge_lqi,
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 		.flags = GENL_UNS_ADMIN_PERM,
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 	},
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@@ -646,9 +628,10 @@
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 	.name = "MAC802154_HWSIM",
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 	.version = 1,
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 	.maxattr = MAC802154_HWSIM_ATTR_MAX,
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+	.policy = hwsim_genl_policy,
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 	.module = THIS_MODULE,
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-	.ops = hwsim_nl_ops,
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-	.n_ops = ARRAY_SIZE(hwsim_nl_ops),
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+	.small_ops = hwsim_nl_ops,
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+	.n_small_ops = ARRAY_SIZE(hwsim_nl_ops),
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 	.mcgrps = hwsim_mcgrps,
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 	.n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
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 };