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2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a 
 kernel/drivers/net/team/team.c
....@@ -1,11 +1,7 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * drivers/net/team/team.c - Network team device driver
34  * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
4
- *
5
- * This program is free software; you can redistribute it and/or modify
6
- * it under the terms of the GNU General Public License as published by
7
- * the Free Software Foundation; either version 2 of the License, or
8
- * (at your option) any later version.
95  */
106 
117 #include <linux/kernel.h>
....@@ -28,7 +24,6 @@
2824 #include <net/genetlink.h>
2925 #include <net/netlink.h>
3026 #include <net/sch_generic.h>
31
-#include <net/switchdev.h>
3227 #include <generated/utsrelease.h>
3328 #include <linux/if_team.h>
3429 
....@@ -39,13 +34,11 @@
3934  * Helpers
4035  **********/
4136 
42
-#define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT)
43
-
4437 static struct team_port *team_port_get_rtnl(const struct net_device *dev)
4538 {
4639 	struct team_port *port = rtnl_dereference(dev->rx_handler_data);
4740 
48
-	return team_port_exists(dev) ? port : NULL;
41
+	return netif_is_team_port(dev) ? port : NULL;
4942 }
5043 
5144 /*
....@@ -59,7 +52,7 @@
5952 
6053 	memcpy(addr.__data, dev_addr, port_dev->addr_len);
6154 	addr.ss_family = port_dev->type;
62
-	return dev_set_mac_address(port_dev, (struct sockaddr *)&addr);
55
+	return dev_set_mac_address(port_dev, (struct sockaddr *)&addr, NULL);
6356 }
6457 
6558 static int team_port_set_orig_dev_addr(struct team_port *port)
....@@ -1097,10 +1090,7 @@
10971090 		return;
10981091 	port->np = NULL;
10991092 
1100
-	/* Wait for transmitting packets to finish before freeing. */
1101
-	synchronize_rcu_bh();
1102
-	__netpoll_cleanup(np);
1103
-	kfree(np);
1093
+	__netpoll_free(np);
11041094 }
11051095 #else
11061096 static int team_port_enable_netpoll(struct team_port *port)
....@@ -1153,7 +1143,7 @@
11531143 		return -EINVAL;
11541144 	}
11551145 
1156
-	if (team_port_exists(port_dev)) {
1146
+	if (netif_is_team_port(port_dev)) {
11571147 		NL_SET_ERR_MSG(extack, "Device is already a port of a team device");
11581148 		netdev_err(dev, "Device %s is already a port "
11591149 				"of a team device\n", portname);
....@@ -1217,7 +1207,7 @@
12171207 		goto err_port_enter;
12181208 	}
12191209 
1220
-	err = dev_open(port_dev);
1210
+	err = dev_open(port_dev, extack);
12211211 	if (err) {
12221212 		netdev_dbg(dev, "Device %s opening failed\n",
12231213 			   portname);
....@@ -1280,10 +1270,12 @@
12801270 		}
12811271 	}
12821272 
1283
-	netif_addr_lock_bh(dev);
1284
-	dev_uc_sync_multiple(port_dev, dev);
1285
-	dev_mc_sync_multiple(port_dev, dev);
1286
-	netif_addr_unlock_bh(dev);
1273
+	if (dev->flags & IFF_UP) {
1274
+		netif_addr_lock_bh(dev);
1275
+		dev_uc_sync_multiple(port_dev, dev);
1276
+		dev_mc_sync_multiple(port_dev, dev);
1277
+		netif_addr_unlock_bh(dev);
1278
+	}
12871279 
12881280 	port->index = -1;
12891281 	list_add_tail_rcu(&port->list, &team->port_list);
....@@ -1354,8 +1346,10 @@
13541346 	netdev_rx_handler_unregister(port_dev);
13551347 	team_port_disable_netpoll(port);
13561348 	vlan_vids_del_by_dev(port_dev, dev);
1357
-	dev_uc_unsync(port_dev, dev);
1358
-	dev_mc_unsync(port_dev, dev);
1349
+	if (dev->flags & IFF_UP) {
1350
+		dev_uc_unsync(port_dev, dev);
1351
+		dev_mc_unsync(port_dev, dev);
1352
+	}
13591353 	dev_close(port_dev);
13601354 	team_port_leave(team, port);
13611355 
....@@ -1629,8 +1623,8 @@
16291623 	int err;
16301624 
16311625 	team->dev = dev;
1632
-	mutex_init(&team->lock);
16331626 	team_set_no_mode(team);
1627
+	team->notifier_ctx = false;
16341628 
16351629 	team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats);
16361630 	if (!team->pcpu_stats)
....@@ -1656,6 +1650,8 @@
16561650 		goto err_options_register;
16571651 	netif_carrier_off(dev);
16581652 
1653
+	lockdep_register_key(&team->team_lock_key);
1654
+	__mutex_init(&team->lock, "team->team_lock_key", &team->team_lock_key);
16591655 	netdev_lockdep_set_classes(dev);
16601656 
16611657 	return 0;
....@@ -1687,6 +1683,7 @@
16871683 	team_queue_override_fini(team);
16881684 	mutex_unlock(&team->lock);
16891685 	netdev_change_features(dev);
1686
+	lockdep_unregister_key(&team->team_lock_key);
16901687 }
16911688 
16921689 static void team_destructor(struct net_device *dev)
....@@ -1703,6 +1700,14 @@
17031700 
17041701 static int team_close(struct net_device *dev)
17051702 {
1703
+	struct team *team = netdev_priv(dev);
1704
+	struct team_port *port;
1705
+
1706
+	list_for_each_entry(port, &team->port_list, list) {
1707
+		dev_uc_unsync(port->dev, dev);
1708
+		dev_mc_unsync(port->dev, dev);
1709
+	}
1710
+
17061711 	return 0;
17071712 }
17081713 
....@@ -1734,8 +1739,7 @@
17341739 }
17351740 
17361741 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb,
1737
-			     struct net_device *sb_dev,
1738
-			     select_queue_fallback_t fallback)
1742
+			     struct net_device *sb_dev)
17391743 {
17401744 	/*
17411745 	 * This helper function exists to help dev_pick_tx get the correct
....@@ -1991,8 +1995,15 @@
19911995 	err = team_port_del(team, port_dev);
19921996 	mutex_unlock(&team->lock);
19931997 
1994
-	if (!err)
1995
-		netdev_change_features(dev);
1998
+	if (err)
1999
+		return err;
2000
+
2001
+	if (netif_is_team_master(port_dev)) {
2002
+		lockdep_unregister_key(&team->team_lock_key);
2003
+		lockdep_register_key(&team->team_lock_key);
2004
+		lockdep_set_class(&team->lock, &team->team_lock_key);
2005
+	}
2006
+	netdev_change_features(dev);
19962007 
19972008 	return err;
19982009 }
....@@ -2071,9 +2082,37 @@
20712082 	strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
20722083 }
20732084 
2085
+static int team_ethtool_get_link_ksettings(struct net_device *dev,
2086
+					   struct ethtool_link_ksettings *cmd)
2087
+{
2088
+	struct team *team= netdev_priv(dev);
2089
+	unsigned long speed = 0;
2090
+	struct team_port *port;
2091
+
2092
+	cmd->base.duplex = DUPLEX_UNKNOWN;
2093
+	cmd->base.port = PORT_OTHER;
2094
+
2095
+	rcu_read_lock();
2096
+	list_for_each_entry_rcu(port, &team->port_list, list) {
2097
+		if (team_port_txable(port)) {
2098
+			if (port->state.speed != SPEED_UNKNOWN)
2099
+				speed += port->state.speed;
2100
+			if (cmd->base.duplex == DUPLEX_UNKNOWN &&
2101
+			    port->state.duplex != DUPLEX_UNKNOWN)
2102
+				cmd->base.duplex = port->state.duplex;
2103
+		}
2104
+	}
2105
+	rcu_read_unlock();
2106
+
2107
+	cmd->base.speed = speed ? : SPEED_UNKNOWN;
2108
+
2109
+	return 0;
2110
+}
2111
+
20742112 static const struct ethtool_ops team_ethtool_ops = {
20752113 	.get_drvinfo		= team_ethtool_get_drvinfo,
20762114 	.get_link		= ethtool_op_get_link,
2115
+	.get_link_ksettings	= team_ethtool_get_link_ksettings,
20772116 };
20782117 
20792118 /***********************
....@@ -2083,7 +2122,12 @@
20832122 static void team_setup_by_port(struct net_device *dev,
20842123 			       struct net_device *port_dev)
20852124 {
2086
-	dev->header_ops	= port_dev->header_ops;
2125
+	struct team *team = netdev_priv(dev);
2126
+
2127
+	if (port_dev->type == ARPHRD_ETHER)
2128
+		dev->header_ops	= team->header_ops_cache;
2129
+	else
2130
+		dev->header_ops	= port_dev->header_ops;
20872131 	dev->type = port_dev->type;
20882132 	dev->hard_header_len = port_dev->hard_header_len;
20892133 	dev->needed_headroom = port_dev->needed_headroom;
....@@ -2091,6 +2135,15 @@
20912135 	dev->mtu = port_dev->mtu;
20922136 	memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
20932137 	eth_hw_addr_inherit(dev, port_dev);
2138
+
2139
+	if (port_dev->flags & IFF_POINTOPOINT) {
2140
+		dev->flags &= ~(IFF_BROADCAST | IFF_MULTICAST);
2141
+		dev->flags |= (IFF_POINTOPOINT | IFF_NOARP);
2142
+	} else if ((port_dev->flags & (IFF_BROADCAST | IFF_MULTICAST)) ==
2143
+		    (IFF_BROADCAST | IFF_MULTICAST)) {
2144
+		dev->flags |= (IFF_BROADCAST | IFF_MULTICAST);
2145
+		dev->flags &= ~(IFF_POINTOPOINT | IFF_NOARP);
2146
+	}
20942147 }
20952148 
20962149 static int team_dev_type_check_change(struct net_device *dev,
....@@ -2121,8 +2174,11 @@
21212174 
21222175 static void team_setup(struct net_device *dev)
21232176 {
2177
+	struct team *team = netdev_priv(dev);
2178
+
21242179 	ether_setup(dev);
21252180 	dev->max_mtu = ETH_MAX_MTU;
2181
+	team->header_ops_cache = dev->header_ops;
21262182 
21272183 	dev->netdev_ops = &team_netdev_ops;
21282184 	dev->ethtool_ops = &team_ethtool_ops;
....@@ -2147,7 +2203,9 @@
21472203 
21482204 	dev->hw_features = TEAM_VLAN_FEATURES |
21492205 			   NETIF_F_HW_VLAN_CTAG_RX |
2150
-			   NETIF_F_HW_VLAN_CTAG_FILTER;
2206
+			   NETIF_F_HW_VLAN_CTAG_FILTER |
2207
+			   NETIF_F_HW_VLAN_STAG_RX |
2208
+			   NETIF_F_HW_VLAN_STAG_FILTER;
21512209 
21522210 	dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4;
21532211 	dev->features |= dev->hw_features;
....@@ -2306,7 +2364,7 @@
23062364 	if (err)
23072365 		return err;
23082366 
2309
-	option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
2367
+	option_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_OPTION);
23102368 	if (!option_item)
23112369 		return -EMSGSIZE;
23122370 
....@@ -2420,7 +2478,7 @@
24202478 
24212479 	if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
24222480 		goto nla_put_failure;
2423
-	option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
2481
+	option_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_OPTION);
24242482 	if (!option_list)
24252483 		goto nla_put_failure;
24262484 
....@@ -2526,9 +2584,11 @@
25262584 			err = -EINVAL;
25272585 			goto team_put;
25282586 		}
2529
-		err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
2530
-				       nl_option, team_nl_option_policy,
2531
-				       info->extack);
2587
+		err = nla_parse_nested_deprecated(opt_attrs,
2588
+						  TEAM_ATTR_OPTION_MAX,
2589
+						  nl_option,
2590
+						  team_nl_option_policy,
2591
+						  info->extack);
25322592 		if (err)
25332593 			goto team_put;
25342594 		if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
....@@ -2642,7 +2702,7 @@
26422702 {
26432703 	struct nlattr *port_item;
26442704 
2645
-	port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2705
+	port_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_PORT);
26462706 	if (!port_item)
26472707 		goto nest_cancel;
26482708 	if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
....@@ -2697,7 +2757,7 @@
26972757 
26982758 	if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
26992759 		goto nla_put_failure;
2700
-	port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2760
+	port_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_PORT);
27012761 	if (!port_list)
27022762 		goto nla_put_failure;
27032763 
....@@ -2768,28 +2828,28 @@
27682828 	return err;
27692829 }
27702830 
2771
-static const struct genl_ops team_nl_ops[] = {
2831
+static const struct genl_small_ops team_nl_ops[] = {
27722832 	{
27732833 		.cmd = TEAM_CMD_NOOP,
2834
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
27742835 		.doit = team_nl_cmd_noop,
2775
-		.policy = team_nl_policy,
27762836 	},
27772837 	{
27782838 		.cmd = TEAM_CMD_OPTIONS_SET,
2839
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
27792840 		.doit = team_nl_cmd_options_set,
2780
-		.policy = team_nl_policy,
27812841 		.flags = GENL_ADMIN_PERM,
27822842 	},
27832843 	{
27842844 		.cmd = TEAM_CMD_OPTIONS_GET,
2845
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
27852846 		.doit = team_nl_cmd_options_get,
2786
-		.policy = team_nl_policy,
27872847 		.flags = GENL_ADMIN_PERM,
27882848 	},
27892849 	{
27902850 		.cmd = TEAM_CMD_PORT_LIST_GET,
2851
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
27912852 		.doit = team_nl_cmd_port_list_get,
2792
-		.policy = team_nl_policy,
27932853 		.flags = GENL_ADMIN_PERM,
27942854 	},
27952855 };
....@@ -2802,10 +2862,11 @@
28022862 	.name		= TEAM_GENL_NAME,
28032863 	.version	= TEAM_GENL_VERSION,
28042864 	.maxattr	= TEAM_ATTR_MAX,
2865
+	.policy = team_nl_policy,
28052866 	.netnsok	= true,
28062867 	.module		= THIS_MODULE,
2807
-	.ops		= team_nl_ops,
2808
-	.n_ops		= ARRAY_SIZE(team_nl_ops),
2868
+	.small_ops	= team_nl_ops,
2869
+	.n_small_ops	= ARRAY_SIZE(team_nl_ops),
28092870 	.mcgrps		= team_nl_mcgrps,
28102871 	.n_mcgrps	= ARRAY_SIZE(team_nl_mcgrps),
28112872 };
....@@ -2975,7 +3036,11 @@
29753036 		team_del_slave(port->team->dev, dev);
29763037 		break;
29773038 	case NETDEV_FEAT_CHANGE:
2978
-		team_compute_features(port->team);
3039
+		if (!port->team->notifier_ctx) {
3040
+			port->team->notifier_ctx = true;
3041
+			team_compute_features(port->team);
3042
+			port->team->notifier_ctx = false;
3043
+		}
29793044 		break;
29803045 	case NETDEV_PRECHANGEMTU:
29813046 		/* Forbid to change mtu of underlaying device */