[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / bridge / br_device.c

/*
 *	Device handling code
 *	Linux ethernet bridge
 *
 *	Authors:
 *	Lennert Buytenhek		<buytenh@gnu.org>
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License
 *	as published by the Free Software Foundation; either version
 *	2 of the License, or (at your option) any later version.
 */

#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/netpoll.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/list.h>
#include <linux/netfilter_bridge.h>

#include <asm/uaccess.h>
#include "br_private.h"

/* net device transmit always called with BH disabled */
netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
	struct net_bridge *br = netdev_priv(dev);
	const unsigned char *dest = skb->data;
	struct net_bridge_fdb_entry *dst;
	struct net_bridge_mdb_entry *mdst;
	struct br_cpu_netstats *brstats = this_cpu_ptr(br->stats);
	u16 vid = 0;

	rcu_read_lock();
#ifdef CONFIG_BRIDGE_NETFILTER
	if (skb->nf_bridge && (skb->nf_bridge->mask & BRNF_BRIDGED_DNAT)) {
		br_nf_pre_routing_finish_bridge_slow(skb);
		rcu_read_unlock();
		return NETDEV_TX_OK;
	}
#endif

	if (!br_allowed_ingress(br, br_get_vlan_info(br), skb, &vid))
		goto out;

	BR_INPUT_SKB_CB(skb)->brdev = dev;

	skb_reset_mac_header(skb);
	skb_pull(skb, ETH_HLEN);

	u64_stats_update_begin(&brstats->syncp);
	brstats->tx_packets++;
	/* Exclude ETH_HLEN from byte stats for consistency with Rx chain */
	brstats->tx_bytes += skb->len;
	u64_stats_update_end(&brstats->syncp);

	if (is_broadcast_ether_addr(dest))
		br_flood_deliver(br, skb);
	else if (is_multicast_ether_addr(dest)) {
		if (unlikely(netpoll_tx_running(dev))) {
			br_flood_deliver(br, skb);
			goto out;
		}
		if (br_multicast_rcv(br, NULL, skb)) {
			kfree_skb(skb);
			goto out;
		}

		mdst = br_mdb_get(br, skb, vid);
		if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb))
			br_multicast_deliver(mdst, skb);
		else
			br_flood_deliver(br, skb);
	} else if ((dst = __br_fdb_get(br, dest, vid)) != NULL)
		br_deliver(dst->dst, skb);
	else
		br_flood_deliver(br, skb);

out:
	rcu_read_unlock();
	return NETDEV_TX_OK;
}

static int br_dev_init(struct net_device *dev)
{
	struct net_bridge *br = netdev_priv(dev);

	br->stats = alloc_percpu(struct br_cpu_netstats);
	if (!br->stats)
		return -ENOMEM;

	return 0;
}

static int br_dev_open(struct net_device *dev)
{
	struct net_bridge *br = netdev_priv(dev);

	netdev_update_features(dev);
	netif_start_queue(dev);
	br_stp_enable_bridge(br);
	br_multicast_open(br);

	return 0;
}

static void br_dev_set_multicast_list(struct net_device *dev)
{
}

static int br_dev_stop(struct net_device *dev)
{
	struct net_bridge *br = netdev_priv(dev);

	br_stp_disable_bridge(br);
	br_multicast_stop(br);

	netif_stop_queue(dev);

	return 0;
}

static struct rtnl_link_stats64 *br_get_stats64(struct net_device *dev,
						struct rtnl_link_stats64 *stats)
{
	struct net_bridge *br = netdev_priv(dev);
	struct br_cpu_netstats tmp, sum = { 0 };
	unsigned int cpu;

	for_each_possible_cpu(cpu) {
		unsigned int start;
		const struct br_cpu_netstats *bstats
			= per_cpu_ptr(br->stats, cpu);
		do {
			start = u64_stats_fetch_begin_bh(&bstats->syncp);
			memcpy(&tmp, bstats, sizeof(tmp));
		} while (u64_stats_fetch_retry_bh(&bstats->syncp, start));
		sum.tx_bytes   += tmp.tx_bytes;
		sum.tx_packets += tmp.tx_packets;
		sum.rx_bytes   += tmp.rx_bytes;
		sum.rx_packets += tmp.rx_packets;
	}

	stats->tx_bytes   = sum.tx_bytes;
	stats->tx_packets = sum.tx_packets;
	stats->rx_bytes   = sum.rx_bytes;
	stats->rx_packets = sum.rx_packets;

	return stats;
}

static int br_change_mtu(struct net_device *dev, int new_mtu)
{
	struct net_bridge *br = netdev_priv(dev);
	if (new_mtu < 68 || new_mtu > br_min_mtu(br))
		return -EINVAL;

	dev->mtu = new_mtu;

#ifdef CONFIG_BRIDGE_NETFILTER
	/* remember the MTU in the rtable for PMTU */
	dst_metric_set(&br->fake_rtable.dst, RTAX_MTU, new_mtu);
#endif

	return 0;
}

/* Allow setting mac address to any valid ethernet address. */
static int br_set_mac_address(struct net_device *dev, void *p)
{
	struct net_bridge *br = netdev_priv(dev);
	struct sockaddr *addr = p;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EADDRNOTAVAIL;

	spin_lock_bh(&br->lock);
	if (!ether_addr_equal(dev->dev_addr, addr->sa_data)) {
		memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
		br_fdb_change_mac_address(br, addr->sa_data);
		br_stp_change_bridge_id(br, addr->sa_data);
	}
	spin_unlock_bh(&br->lock);

	return 0;
}

static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
	strlcpy(info->driver, "bridge", sizeof(info->driver));
	strlcpy(info->version, BR_VERSION, sizeof(info->version));
	strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
	strlcpy(info->bus_info, "N/A", sizeof(info->bus_info));
}

static netdev_features_t br_fix_features(struct net_device *dev,
	netdev_features_t features)
{
	struct net_bridge *br = netdev_priv(dev);

	return br_features_recompute(br, features);
}

#ifdef CONFIG_NET_POLL_CONTROLLER
static void br_poll_controller(struct net_device *br_dev)
{
}

static void br_netpoll_cleanup(struct net_device *dev)
{
	struct net_bridge *br = netdev_priv(dev);
	struct net_bridge_port *p;

	list_for_each_entry(p, &br->port_list, list)
		br_netpoll_disable(p);
}

static int br_netpoll_setup(struct net_device *dev, struct netpoll_info *ni,
			    gfp_t gfp)
{
	struct net_bridge *br = netdev_priv(dev);
	struct net_bridge_port *p;
	int err = 0;

	list_for_each_entry(p, &br->port_list, list) {
		if (!p->dev)
			continue;
		err = br_netpoll_enable(p, gfp);
		if (err)
			goto fail;
	}

out:
	return err;

fail:
	br_netpoll_cleanup(dev);
	goto out;
}

int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
{
	struct netpoll *np;
	int err = 0;

	np = kzalloc(sizeof(*p->np), gfp);
	err = -ENOMEM;
	if (!np)
		goto out;

	err = __netpoll_setup(np, p->dev, gfp);
	if (err) {
		kfree(np);
		goto out;
	}

	p->np = np;

out:
	return err;
}

void br_netpoll_disable(struct net_bridge_port *p)
{
	struct netpoll *np = p->np;

	if (!np)
		return;

	p->np = NULL;

	__netpoll_free_async(np);
}

#endif

static int br_add_slave(struct net_device *dev, struct net_device *slave_dev)

{
	struct net_bridge *br = netdev_priv(dev);

	return br_add_if(br, slave_dev);
}

static int br_del_slave(struct net_device *dev, struct net_device *slave_dev)
{
	struct net_bridge *br = netdev_priv(dev);

	return br_del_if(br, slave_dev);
}

static const struct ethtool_ops br_ethtool_ops = {
	.get_drvinfo    = br_getinfo,
	.get_link	= ethtool_op_get_link,
};

static const struct net_device_ops br_netdev_ops = {
	.ndo_open		 = br_dev_open,
	.ndo_stop		 = br_dev_stop,
	.ndo_init		 = br_dev_init,
	.ndo_start_xmit		 = br_dev_xmit,
	.ndo_get_stats64	 = br_get_stats64,
	.ndo_set_mac_address	 = br_set_mac_address,
	.ndo_set_rx_mode	 = br_dev_set_multicast_list,
	.ndo_change_mtu		 = br_change_mtu,
	.ndo_do_ioctl		 = br_dev_ioctl,
#ifdef CONFIG_NET_POLL_CONTROLLER
	.ndo_netpoll_setup	 = br_netpoll_setup,
	.ndo_netpoll_cleanup	 = br_netpoll_cleanup,
	.ndo_poll_controller	 = br_poll_controller,
#endif
	.ndo_add_slave		 = br_add_slave,
	.ndo_del_slave		 = br_del_slave,
	.ndo_fix_features        = br_fix_features,
	.ndo_fdb_add		 = br_fdb_add,
	.ndo_fdb_del		 = br_fdb_delete,
	.ndo_fdb_dump		 = br_fdb_dump,
	.ndo_bridge_getlink	 = br_getlink,
	.ndo_bridge_setlink	 = br_setlink,
	.ndo_bridge_dellink	 = br_dellink,
};

static void br_dev_free(struct net_device *dev)
{
	struct net_bridge *br = netdev_priv(dev);

	free_percpu(br->stats);
	free_netdev(dev);
}

static struct device_type br_type = {
	.name	= "bridge",
};

void br_dev_setup(struct net_device *dev)
{
	struct net_bridge *br = netdev_priv(dev);

	eth_hw_addr_random(dev);
	ether_setup(dev);

	dev->netdev_ops = &br_netdev_ops;
	dev->destructor = br_dev_free;
	SET_ETHTOOL_OPS(dev, &br_ethtool_ops);
	SET_NETDEV_DEVTYPE(dev, &br_type);
	dev->tx_queue_len = 0;
	dev->priv_flags = IFF_EBRIDGE;

	dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA |
			NETIF_F_GSO_MASK | NETIF_F_HW_CSUM | NETIF_F_LLTX |
			NETIF_F_NETNS_LOCAL | NETIF_F_HW_VLAN_CTAG_TX;
	dev->hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA |
			   NETIF_F_GSO_MASK | NETIF_F_HW_CSUM |
			   NETIF_F_HW_VLAN_CTAG_TX;

	br->dev = dev;
	spin_lock_init(&br->lock);
	INIT_LIST_HEAD(&br->port_list);
	spin_lock_init(&br->hash_lock);

	br->bridge_id.prio[0] = 0x80;
	br->bridge_id.prio[1] = 0x00;

	memcpy(br->group_addr, eth_reserved_addr_base, ETH_ALEN);

	br->stp_enabled = BR_NO_STP;
	br->group_fwd_mask = BR_GROUPFWD_DEFAULT;

	br->designated_root = br->bridge_id;
	br->bridge_max_age = br->max_age = 20 * HZ;
	br->bridge_hello_time = br->hello_time = 2 * HZ;
	br->bridge_forward_delay = br->forward_delay = 15 * HZ;
	br->ageing_time = 300 * HZ;

	br_netfilter_rtable_init(br);
	br_stp_timer_init(br);
	br_multicast_init(br);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Device handling code
	3	* Linux ethernet bridge
	4	*
	5	* Authors:
	6	* Lennert Buytenhek <buytenh@gnu.org>
	7	*
1da177e4 LT	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* as published by the Free Software Foundation; either version
	11	* 2 of the License, or (at your option) any later version.
	12	*/
	13
	14	#include <linux/kernel.h>
	15	#include <linux/netdevice.h>
c06ee961	16	#include <linux/netpoll.h>
4505a3ef	17	#include <linux/etherdevice.h>
edb5e46f	18	#include <linux/ethtool.h>
c06ee961	19	#include <linux/list.h>
ea2d9b41	20	#include <linux/netfilter_bridge.h>
4505a3ef	21
1da177e4 LT	22	#include <asm/uaccess.h>
	23	#include "br_private.h"
	24
eeaf61d8	25	/* net device transmit always called with BH disabled */
6fef4c0c	26	netdev_tx_t br_dev_xmit(struct sk_buff skb, struct net_device dev)
1da177e4 LT	27	{
	28	struct net_bridge *br = netdev_priv(dev);
	29	const unsigned char *dest = skb->data;
	30	struct net_bridge_fdb_entry *dst;
c4fcb78c	31	struct net_bridge_mdb_entry *mdst;
14bb4789	32	struct br_cpu_netstats *brstats = this_cpu_ptr(br->stats);
78851988	33	u16 vid = 0;
1da177e4	34
c03307ea	35	rcu_read_lock();
ea2d9b41 BDS	36	#ifdef CONFIG_BRIDGE_NETFILTER
	37	if (skb->nf_bridge && (skb->nf_bridge->mask & BRNF_BRIDGED_DNAT)) {
	38	br_nf_pre_routing_finish_bridge_slow(skb);
c03307ea	39	rcu_read_unlock();
ea2d9b41 BDS	40	return NETDEV_TX_OK;
	41	}
	42	#endif
	43
78851988	44	if (!br_allowed_ingress(br, br_get_vlan_info(br), skb, &vid))
a37b85c9 VY	45	goto out;
a37b85c9 VY	46
14bb4789	47	BR_INPUT_SKB_CB(skb)->brdev = dev;
1da177e4	48
459a98ed	49	skb_reset_mac_header(skb);
1da177e4 LT	50	skb_pull(skb, ETH_HLEN);
1da177e4 LT	51
6fa3eb70 S	52	u64_stats_update_begin(&brstats->syncp);
	53	brstats->tx_packets++;
	54	/* Exclude ETH_HLEN from byte stats for consistency with Rx chain */
	55	brstats->tx_bytes += skb->len;
	56	u64_stats_update_end(&brstats->syncp);
	57
44661462 HX	58	if (is_broadcast_ether_addr(dest))
	59	br_flood_deliver(br, skb);
	60	else if (is_multicast_ether_addr(dest)) {
91d2c34a HX	61	if (unlikely(netpoll_tx_running(dev))) {
	62	br_flood_deliver(br, skb);
	63	goto out;
	64	}
6d1d1d39 HX	65	if (br_multicast_rcv(br, NULL, skb)) {
6d1d1d39 HX	66	kfree_skb(skb);
c4fcb78c	67	goto out;
6d1d1d39	68	}
c4fcb78c	69
fbca58a2	70	mdst = br_mdb_get(br, skb, vid);
32dec5dd	71	if (mdst \|\| BR_INPUT_SKB_CB_MROUTERS_ONLY(skb))
c4fcb78c HX	72	br_multicast_deliver(mdst, skb);
	73	else
	74	br_flood_deliver(br, skb);
2ba071ec	75	} else if ((dst = __br_fdb_get(br, dest, vid)) != NULL)
1da177e4 LT	76	br_deliver(dst->dst, skb);
1da177e4 LT	77	else
e081e1e3	78	br_flood_deliver(br, skb);
1da177e4	79
c4fcb78c	80	out:
eeaf61d8	81	rcu_read_unlock();
6ed10654	82	return NETDEV_TX_OK;
1da177e4 LT	83	}
1da177e4 LT	84
bb900b27	85	static int br_dev_init(struct net_device *dev)
	86	{
	87	struct net_bridge *br = netdev_priv(dev);
	88
	89	br->stats = alloc_percpu(struct br_cpu_netstats);
	90	if (!br->stats)
	91	return -ENOMEM;
	92
	93	return 0;
	94	}
	95
1da177e4 LT	96	static int br_dev_open(struct net_device *dev)
1da177e4 LT	97	{
81d35307	98	struct net_bridge *br = netdev_priv(dev);
1da177e4	99
c4d27ef9	100	netdev_update_features(dev);
81d35307 SH	101	netif_start_queue(dev);
81d35307 SH	102	br_stp_enable_bridge(br);
3fe2d7c7	103	br_multicast_open(br);
1da177e4 LT	104
	105	return 0;
	106	}
	107
	108	static void br_dev_set_multicast_list(struct net_device *dev)
	109	{
	110	}
	111
	112	static int br_dev_stop(struct net_device *dev)
	113	{
3fe2d7c7 HX	114	struct net_bridge *br = netdev_priv(dev);
	115
	116	br_stp_disable_bridge(br);
	117	br_multicast_stop(br);
1da177e4 LT	118
	119	netif_stop_queue(dev);
	120
	121	return 0;
	122	}
	123
28172739 ED	124	static struct rtnl_link_stats64 br_get_stats64(struct net_device dev,
28172739 ED	125	struct rtnl_link_stats64 *stats)
14bb4789	126	{
14bb4789	127	struct net_bridge *br = netdev_priv(dev);
406818ff	128	struct br_cpu_netstats tmp, sum = { 0 };
14bb4789	129	unsigned int cpu;
	130
	131	for_each_possible_cpu(cpu) {
406818ff	132	unsigned int start;
14bb4789	133	const struct br_cpu_netstats *bstats
14bb4789	134	= per_cpu_ptr(br->stats, cpu);
406818ff	135	do {
e3906486	136	start = u64_stats_fetch_begin_bh(&bstats->syncp);
406818ff	137	memcpy(&tmp, bstats, sizeof(tmp));
e3906486	138	} while (u64_stats_fetch_retry_bh(&bstats->syncp, start));
406818ff ED	139	sum.tx_bytes += tmp.tx_bytes;
	140	sum.tx_packets += tmp.tx_packets;
	141	sum.rx_bytes += tmp.rx_bytes;
	142	sum.rx_packets += tmp.rx_packets;
14bb4789	143	}
	144
	145	stats->tx_bytes = sum.tx_bytes;
	146	stats->tx_packets = sum.tx_packets;
	147	stats->rx_bytes = sum.rx_bytes;
	148	stats->rx_packets = sum.rx_packets;
	149
	150	return stats;
	151	}
	152
1da177e4 LT	153	static int br_change_mtu(struct net_device *dev, int new_mtu)
1da177e4 LT	154	{
4adf0af6 SW	155	struct net_bridge *br = netdev_priv(dev);
4adf0af6 SW	156	if (new_mtu < 68 \|\| new_mtu > br_min_mtu(br))
1da177e4 LT	157	return -EINVAL;
	158
	159	dev->mtu = new_mtu;
4adf0af6 SW	160
	161	#ifdef CONFIG_BRIDGE_NETFILTER
	162	/* remember the MTU in the rtable for PMTU */
defb3519	163	dst_metric_set(&br->fake_rtable.dst, RTAX_MTU, new_mtu);
4adf0af6 SW	164	#endif
4adf0af6 SW	165
1da177e4 LT	166	return 0;
	167	}
	168
ffe1d49c	169	/* Allow setting mac address to any valid ethernet address. */
4505a3ef SH	170	static int br_set_mac_address(struct net_device dev, void p)
	171	{
	172	struct net_bridge *br = netdev_priv(dev);
	173	struct sockaddr *addr = p;
ffe1d49c SH	174
ffe1d49c SH	175	if (!is_valid_ether_addr(addr->sa_data))
7ca1e11a	176	return -EADDRNOTAVAIL;
4505a3ef SH	177
4505a3ef SH	178	spin_lock_bh(&br->lock);
9a7b6ef9	179	if (!ether_addr_equal(dev->dev_addr, addr->sa_data)) {
43598813	180	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
	181	br_fdb_change_mac_address(br, addr->sa_data);
	182	br_stp_change_bridge_id(br, addr->sa_data);
	183	}
4505a3ef SH	184	spin_unlock_bh(&br->lock);
4505a3ef SH	185
ffe1d49c	186	return 0;
4505a3ef SH	187	}
4505a3ef SH	188
edb5e46f SH	189	static void br_getinfo(struct net_device dev, struct ethtool_drvinfo info)
edb5e46f SH	190	{
7826d43f JP	191	strlcpy(info->driver, "bridge", sizeof(info->driver));
	192	strlcpy(info->version, BR_VERSION, sizeof(info->version));
	193	strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
	194	strlcpy(info->bus_info, "N/A", sizeof(info->bus_info));
edb5e46f SH	195	}
edb5e46f SH	196
c8f44aff MM	197	static netdev_features_t br_fix_features(struct net_device *dev,
c8f44aff MM	198	netdev_features_t features)
edb5e46f SH	199	{
	200	struct net_bridge *br = netdev_priv(dev);
	201
c4d27ef9	202	return br_features_recompute(br, features);
361ff8a6 JG	203	}
361ff8a6 JG	204
c06ee961	205	#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a	206	static void br_poll_controller(struct net_device *br_dev)
c06ee961	207	{
c06ee961 WC	208	}
c06ee961 WC	209
91d2c34a	210	static void br_netpoll_cleanup(struct net_device *dev)
c06ee961	211	{
91d2c34a	212	struct net_bridge *br = netdev_priv(dev);
4e3828c4	213	struct net_bridge_port *p;
c06ee961	214
4e3828c4	215	list_for_each_entry(p, &br->port_list, list)
91d2c34a	216	br_netpoll_disable(p);
c06ee961 WC	217	}
c06ee961 WC	218
47be03a2 AW	219	static int br_netpoll_setup(struct net_device dev, struct netpoll_info ni,
47be03a2 AW	220	gfp_t gfp)
c06ee961	221	{
cfb478da	222	struct net_bridge *br = netdev_priv(dev);
4e3828c4	223	struct net_bridge_port *p;
91d2c34a	224	int err = 0;
c06ee961	225
4e3828c4	226	list_for_each_entry(p, &br->port_list, list) {
91d2c34a HX	227	if (!p->dev)
91d2c34a HX	228	continue;
47be03a2	229	err = br_netpoll_enable(p, gfp);
91d2c34a HX	230	if (err)
91d2c34a HX	231	goto fail;
c06ee961	232	}
91d2c34a HX	233
	234	out:
	235	return err;
	236
	237	fail:
	238	br_netpoll_cleanup(dev);
	239	goto out;
c06ee961 WC	240	}
c06ee961 WC	241
47be03a2	242	int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
cfb478da	243	{
91d2c34a HX	244	struct netpoll *np;
	245	int err = 0;
	246
47be03a2	247	np = kzalloc(sizeof(*p->np), gfp);
91d2c34a HX	248	err = -ENOMEM;
	249	if (!np)
	250	goto out;
	251
47be03a2	252	err = __netpoll_setup(np, p->dev, gfp);
91d2c34a HX	253	if (err) {
	254	kfree(np);
	255	goto out;
	256	}
	257
	258	p->np = np;
	259
	260	out:
	261	return err;
cfb478da	262	}
c06ee961	263
91d2c34a	264	void br_netpoll_disable(struct net_bridge_port *p)
c06ee961	265	{
91d2c34a HX	266	struct netpoll *np = p->np;
	267
	268	if (!np)
	269	return;
	270
	271	p->np = NULL;
	272
2cde6acd	273	__netpoll_free_async(np);
c06ee961 WC	274	}
	275
	276	#endif
	277
afc6151a JP	278	static int br_add_slave(struct net_device dev, struct net_device slave_dev)
	279
	280	{
	281	struct net_bridge *br = netdev_priv(dev);
	282
	283	return br_add_if(br, slave_dev);
	284	}
	285
	286	static int br_del_slave(struct net_device dev, struct net_device slave_dev)
	287	{
	288	struct net_bridge *br = netdev_priv(dev);
	289
	290	return br_del_if(br, slave_dev);
	291	}
	292
a2dbb882	293	static const struct ethtool_ops br_ethtool_ops = {
e4119a43 SH	294	.get_drvinfo = br_getinfo,
e4119a43 SH	295	.get_link = ethtool_op_get_link,
edb5e46f SH	296	};
edb5e46f SH	297
a2dbb882 SH	298	static const struct net_device_ops br_netdev_ops = {
	299	.ndo_open = br_dev_open,
	300	.ndo_stop = br_dev_stop,
bb900b27	301	.ndo_init = br_dev_init,
00829823	302	.ndo_start_xmit = br_dev_xmit,
406818ff	303	.ndo_get_stats64 = br_get_stats64,
00829823	304	.ndo_set_mac_address = br_set_mac_address,
afc4b13d	305	.ndo_set_rx_mode = br_dev_set_multicast_list,
00829823 SH	306	.ndo_change_mtu = br_change_mtu,
00829823 SH	307	.ndo_do_ioctl = br_dev_ioctl,
c06ee961	308	#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a	309	.ndo_netpoll_setup = br_netpoll_setup,
c06ee961 WC	310	.ndo_netpoll_cleanup = br_netpoll_cleanup,
	311	.ndo_poll_controller = br_poll_controller,
	312	#endif
afc6151a JP	313	.ndo_add_slave = br_add_slave,
afc6151a JP	314	.ndo_del_slave = br_del_slave,
c4d27ef9	315	.ndo_fix_features = br_fix_features,
77162022 JF	316	.ndo_fdb_add = br_fdb_add,
	317	.ndo_fdb_del = br_fdb_delete,
	318	.ndo_fdb_dump = br_fdb_dump,
e5a55a89 JF	319	.ndo_bridge_getlink = br_getlink,
e5a55a89 JF	320	.ndo_bridge_setlink = br_setlink,
407af329	321	.ndo_bridge_dellink = br_dellink,
a2dbb882 SH	322	};
a2dbb882 SH	323
14bb4789	324	static void br_dev_free(struct net_device *dev)
	325	{
	326	struct net_bridge *br = netdev_priv(dev);
	327
	328	free_percpu(br->stats);
	329	free_netdev(dev);
	330	}
	331
bb900b27	332	static struct device_type br_type = {
	333	.name = "bridge",
	334	};
	335
1da177e4 LT	336	void br_dev_setup(struct net_device *dev)
1da177e4 LT	337	{
bb900b27	338	struct net_bridge *br = netdev_priv(dev);
bb900b27	339
7ce5d222	340	eth_hw_addr_random(dev);
1da177e4 LT	341	ether_setup(dev);
1da177e4 LT	342
a2dbb882	343	dev->netdev_ops = &br_netdev_ops;
14bb4789	344	dev->destructor = br_dev_free;
9d6f229f	345	SET_ETHTOOL_OPS(dev, &br_ethtool_ops);
bb900b27	346	SET_NETDEV_DEVTYPE(dev, &br_type);
1da177e4	347	dev->tx_queue_len = 0;
1da177e4	348	dev->priv_flags = IFF_EBRIDGE;
edb5e46f	349
9d6f229f	350	dev->features = NETIF_F_SG \| NETIF_F_FRAGLIST \| NETIF_F_HIGHDMA \|
34324dc2	351	NETIF_F_GSO_MASK \| NETIF_F_HW_CSUM \| NETIF_F_LLTX \|
f646968f	352	NETIF_F_NETNS_LOCAL \| NETIF_F_HW_VLAN_CTAG_TX;
c4d27ef9	353	dev->hw_features = NETIF_F_SG \| NETIF_F_FRAGLIST \| NETIF_F_HIGHDMA \|
34324dc2	354	NETIF_F_GSO_MASK \| NETIF_F_HW_CSUM \|
f646968f	355	NETIF_F_HW_VLAN_CTAG_TX;
bb900b27	356
	357	br->dev = dev;
	358	spin_lock_init(&br->lock);
	359	INIT_LIST_HEAD(&br->port_list);
	360	spin_lock_init(&br->hash_lock);
	361
	362	br->bridge_id.prio[0] = 0x80;
	363	br->bridge_id.prio[1] = 0x00;
	364
2bc80059	365	memcpy(br->group_addr, eth_reserved_addr_base, ETH_ALEN);
bb900b27	366
bb900b27	367	br->stp_enabled = BR_NO_STP;
515853cc	368	br->group_fwd_mask = BR_GROUPFWD_DEFAULT;
515853cc	369
bb900b27	370	br->designated_root = br->bridge_id;
	371	br->bridge_max_age = br->max_age = 20 * HZ;
	372	br->bridge_hello_time = br->hello_time = 2 * HZ;
	373	br->bridge_forward_delay = br->forward_delay = 15 * HZ;
	374	br->ageing_time = 300 * HZ;
	375
	376	br_netfilter_rtable_init(br);
	377	br_stp_timer_init(br);
	378	br_multicast_init(br);
1da177e4	379	}