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hc
2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc 
 kernel/drivers/net/macvlan.c
....@@ -1,10 +1,6 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * Copyright (c) 2007 Patrick McHardy <kaber@trash.net>
3
- *
4
- * This program is free software; you can redistribute it and/or
5
- * modify it under the terms of the GNU General Public License as
6
- * published by the Free Software Foundation; either version 2 of
7
- * the License, or (at your option) any later version.
84  *
95  * The code this is based on carried the following copyright notice:
106  * ---
....@@ -24,6 +20,7 @@
2420 #include <linux/notifier.h>
2521 #include <linux/netdevice.h>
2622 #include <linux/etherdevice.h>
23
+#include <linux/net_tstamp.h>
2724 #include <linux/ethtool.h>
2825 #include <linux/if_arp.h>
2926 #include <linux/if_vlan.h>
....@@ -34,6 +31,7 @@
3431 #include <net/rtnetlink.h>
3532 #include <net/xfrm.h>
3633 #include <linux/netpoll.h>
34
+#include <linux/phy.h>
3735 
3836 #define MACVLAN_HASH_BITS	8
3937 #define MACVLAN_HASH_SIZE	(1<<MACVLAN_HASH_BITS)
....@@ -119,15 +117,14 @@
119117 	return rtnl_dereference(dev->rx_handler_data);
120118 }
121119 
122
-#define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT)
123
-
124120 static struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port,
125121 					       const unsigned char *addr)
126122 {
127123 	struct macvlan_dev *vlan;
128124 	u32 idx = macvlan_eth_hash(addr);
129125 
130
-	hlist_for_each_entry_rcu(vlan, &port->vlan_hash[idx], hlist) {
126
+	hlist_for_each_entry_rcu(vlan, &port->vlan_hash[idx], hlist,
127
+				 lockdep_rtnl_is_held()) {
131128 		if (ether_addr_equal_64bits(vlan->dev->dev_addr, addr))
132129 			return vlan;
133130 	}
....@@ -142,7 +139,7 @@
142139 	u32 idx = macvlan_eth_hash(addr);
143140 	struct hlist_head *h = &vlan->port->vlan_source_hash[idx];
144141 
145
-	hlist_for_each_entry_rcu(entry, h, hlist) {
142
+	hlist_for_each_entry_rcu(entry, h, hlist, lockdep_rtnl_is_held()) {
146143 		if (ether_addr_equal_64bits(entry->addr, addr) &&
147144 		    entry->vlan == vlan)
148145 			return entry;
....@@ -337,7 +334,7 @@
337334 
338335 		if (src)
339336 			dev_put(src->dev);
340
-		kfree_skb(skb);
337
+		consume_skb(skb);
341338 
342339 		cond_resched();
343340 	}
....@@ -549,12 +546,11 @@
549546 static inline netdev_tx_t macvlan_netpoll_send_skb(struct macvlan_dev *vlan, struct sk_buff *skb)
550547 {
551548 #ifdef CONFIG_NET_POLL_CONTROLLER
552
-	if (vlan->netpoll)
553
-		netpoll_send_skb(vlan->netpoll, skb);
549
+	return netpoll_send_skb(vlan->netpoll, skb);
554550 #else
555551 	BUG();
556
-#endif
557552 	return NETDEV_TX_OK;
553
+#endif
558554 }
559555 
560556 static netdev_tx_t macvlan_start_xmit(struct sk_buff *skb,
....@@ -752,7 +748,7 @@
752748 
753749 	if (vlan->mode == MACVLAN_MODE_PASSTHRU) {
754750 		macvlan_set_addr_change(vlan->port);
755
-		return dev_set_mac_address(vlan->lowerdev, addr);
751
+		return dev_set_mac_address(vlan->lowerdev, addr, NULL);
756752 	}
757753 
758754 	if (macvlan_addr_busy(vlan->port, addr->sa_data))
....@@ -832,6 +828,33 @@
832828 	return 0;
833829 }
834830 
831
+static int macvlan_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
832
+{
833
+	struct net_device *real_dev = macvlan_dev_real_dev(dev);
834
+	const struct net_device_ops *ops = real_dev->netdev_ops;
835
+	struct ifreq ifrr;
836
+	int err = -EOPNOTSUPP;
837
+
838
+	strscpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
839
+	ifrr.ifr_ifru = ifr->ifr_ifru;
840
+
841
+	switch (cmd) {
842
+	case SIOCSHWTSTAMP:
843
+		if (!net_eq(dev_net(dev), &init_net))
844
+			break;
845
+		fallthrough;
846
+	case SIOCGHWTSTAMP:
847
+		if (netif_device_present(real_dev) && ops->ndo_do_ioctl)
848
+			err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);
849
+		break;
850
+	}
851
+
852
+	if (!err)
853
+		ifr->ifr_ifru = ifrr.ifr_ifru;
854
+
855
+	return err;
856
+}
857
+
835858 /*
836859  * macvlan network devices have devices nesting below it and are a special
837860  * "super class" of normal network devices; split their locks off into a
....@@ -854,17 +877,11 @@
854877 #define MACVLAN_STATE_MASK \
855878 	((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT))
856879 
857
-static int macvlan_get_nest_level(struct net_device *dev)
858
-{
859
-	return ((struct macvlan_dev *)netdev_priv(dev))->nest_level;
860
-}
861
-
862880 static void macvlan_set_lockdep_class(struct net_device *dev)
863881 {
864882 	netdev_lockdep_set_classes(dev);
865
-	lockdep_set_class_and_subclass(&dev->addr_list_lock,
866
-				       &macvlan_netdev_addr_lock_key,
867
-				       macvlan_get_nest_level(dev));
883
+	lockdep_set_class(&dev->addr_list_lock,
884
+			  &macvlan_netdev_addr_lock_key);
868885 }
869886 
870887 static int macvlan_init(struct net_device *dev)
....@@ -884,7 +901,6 @@
884901 	dev->gso_max_size	= lowerdev->gso_max_size;
885902 	dev->gso_max_segs	= lowerdev->gso_max_segs;
886903 	dev->hard_header_len	= lowerdev->hard_header_len;
887
-
888904 	macvlan_set_lockdep_class(dev);
889905 
890906 	vlan->pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
....@@ -971,7 +987,8 @@
971987 static int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
972988 			   struct net_device *dev,
973989 			   const unsigned char *addr, u16 vid,
974
-			   u16 flags)
990
+			   u16 flags,
991
+			   struct netlink_ext_ack *extack)
975992 {
976993 	struct macvlan_dev *vlan = netdev_priv(dev);
977994 	int err = -EINVAL;
....@@ -1027,6 +1044,26 @@
10271044 	const struct macvlan_dev *vlan = netdev_priv(dev);
10281045 
10291046 	return __ethtool_get_link_ksettings(vlan->lowerdev, cmd);
1047
+}
1048
+
1049
+static int macvlan_ethtool_get_ts_info(struct net_device *dev,
1050
+				       struct ethtool_ts_info *info)
1051
+{
1052
+	struct net_device *real_dev = macvlan_dev_real_dev(dev);
1053
+	const struct ethtool_ops *ops = real_dev->ethtool_ops;
1054
+	struct phy_device *phydev = real_dev->phydev;
1055
+
1056
+	if (phy_has_tsinfo(phydev)) {
1057
+		return phy_ts_info(phydev, info);
1058
+	} else if (ops->get_ts_info) {
1059
+		return ops->get_ts_info(real_dev, info);
1060
+	} else {
1061
+		info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1062
+			SOF_TIMESTAMPING_SOFTWARE;
1063
+		info->phc_index = -1;
1064
+	}
1065
+
1066
+	return 0;
10301067 }
10311068 
10321069 static netdev_features_t macvlan_fix_features(struct net_device *dev,
....@@ -1088,7 +1125,7 @@
10881125 
10891126 	vlan->netpoll = NULL;
10901127 
1091
-	__netpoll_free_async(netpoll);
1128
+	__netpoll_free(netpoll);
10921129 }
10931130 #endif	/* CONFIG_NET_POLL_CONTROLLER */
10941131 
....@@ -1103,6 +1140,7 @@
11031140 	.get_link		= ethtool_op_get_link,
11041141 	.get_link_ksettings	= macvlan_ethtool_get_link_ksettings,
11051142 	.get_drvinfo		= macvlan_ethtool_get_drvinfo,
1143
+	.get_ts_info		= macvlan_ethtool_get_ts_info,
11061144 };
11071145 
11081146 static const struct net_device_ops macvlan_netdev_ops = {
....@@ -1112,6 +1150,7 @@
11121150 	.ndo_stop		= macvlan_stop,
11131151 	.ndo_start_xmit		= macvlan_start_xmit,
11141152 	.ndo_change_mtu		= macvlan_change_mtu,
1153
+	.ndo_do_ioctl		= macvlan_do_ioctl,
11151154 	.ndo_fix_features	= macvlan_fix_features,
11161155 	.ndo_change_rx_flags	= macvlan_change_rx_flags,
11171156 	.ndo_set_mac_address	= macvlan_set_mac_address,
....@@ -1123,7 +1162,6 @@
11231162 	.ndo_fdb_add		= macvlan_fdb_add,
11241163 	.ndo_fdb_del		= macvlan_fdb_del,
11251164 	.ndo_fdb_dump		= ndo_dflt_fdb_dump,
1126
-	.ndo_get_lock_subclass  = macvlan_get_nest_level,
11271165 #ifdef CONFIG_NET_POLL_CONTROLLER
11281166 	.ndo_poll_controller	= macvlan_dev_poll_controller,
11291167 	.ndo_netpoll_setup	= macvlan_dev_netpoll_setup,
....@@ -1131,13 +1169,14 @@
11311169 #endif
11321170 	.ndo_get_iflink		= macvlan_dev_get_iflink,
11331171 	.ndo_features_check	= passthru_features_check,
1172
+	.ndo_change_proto_down  = dev_change_proto_down_generic,
11341173 };
11351174 
11361175 void macvlan_common_setup(struct net_device *dev)
11371176 {
11381177 	ether_setup(dev);
11391178 
1140
-	dev->min_mtu		= 0;
1179
+	/* ether_setup() has set dev->min_mtu to ETH_MIN_MTU. */
11411180 	dev->max_mtu		= ETH_MAX_MTU;
11421181 	dev->priv_flags	       &= ~IFF_TX_SKB_SHARING;
11431182 	netif_keep_dst(dev);
....@@ -1221,7 +1260,7 @@
12211260 
12221261 		sa.sa_family = port->dev->type;
12231262 		memcpy(&sa.sa_data, port->perm_addr, port->dev->addr_len);
1224
-		dev_set_mac_address(port->dev, &sa);
1263
+		dev_set_mac_address(port->dev, &sa, NULL);
12251264 	}
12261265 
12271266 	kfree(port);
....@@ -1398,7 +1437,7 @@
13981437 	if (!tb[IFLA_ADDRESS])
13991438 		eth_hw_addr_random(dev);
14001439 
1401
-	if (!macvlan_port_exists(lowerdev)) {
1440
+	if (!netif_is_macvlan_port(lowerdev)) {
14021441 		err = macvlan_port_create(lowerdev);
14031442 		if (err < 0)
14041443 			return err;
....@@ -1419,7 +1458,6 @@
14191458 	vlan->dev      = dev;
14201459 	vlan->port     = port;
14211460 	vlan->set_features = MACVLAN_FEATURES;
1422
-	vlan->nest_level = dev_get_nest_level(lowerdev) + 1;
14231461 
14241462 	vlan->mode     = MACVLAN_MODE_VEPA;
14251463 	if (data && data[IFLA_MACVLAN_MODE])
....@@ -1471,8 +1509,10 @@
14711509 	/* the macvlan port may be freed by macvlan_uninit when fail to register.
14721510 	 * so we destroy the macvlan port only when it's valid.
14731511 	 */
1474
-	if (create && macvlan_port_get_rtnl(lowerdev))
1512
+	if (create && macvlan_port_get_rtnl(lowerdev)) {
1513
+		macvlan_flush_sources(port, vlan);
14751514 		macvlan_port_destroy(port->dev);
1515
+	}
14761516 	return err;
14771517 }
14781518 EXPORT_SYMBOL_GPL(macvlan_common_newlink);
....@@ -1574,7 +1614,7 @@
15741614 	struct hlist_head *h = &vlan->port->vlan_source_hash[i];
15751615 	struct macvlan_source_entry *entry;
15761616 
1577
-	hlist_for_each_entry_rcu(entry, h, hlist) {
1617
+	hlist_for_each_entry_rcu(entry, h, hlist, lockdep_rtnl_is_held()) {
15781618 		if (entry->vlan != vlan)
15791619 			continue;
15801620 		if (nla_put(skb, IFLA_MACVLAN_MACADDR, ETH_ALEN, entry->addr))
....@@ -1597,7 +1637,7 @@
15971637 	if (nla_put_u32(skb, IFLA_MACVLAN_MACADDR_COUNT, vlan->macaddr_count))
15981638 		goto nla_put_failure;
15991639 	if (vlan->macaddr_count > 0) {
1600
-		nest = nla_nest_start(skb, IFLA_MACVLAN_MACADDR_DATA);
1640
+		nest = nla_nest_start_noflag(skb, IFLA_MACVLAN_MACADDR_DATA);
16011641 		if (nest == NULL)
16021642 			goto nla_put_failure;
16031643 
....@@ -1658,7 +1698,7 @@
16581698 	struct macvlan_port *port;
16591699 	LIST_HEAD(list_kill);
16601700 
1661
-	if (!macvlan_port_exists(dev))
1701
+	if (!netif_is_macvlan_port(dev))
16621702 		return NOTIFY_DONE;
16631703 
16641704 	port = macvlan_port_get_rtnl(dev);