[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

	u64_stats_update_begin(&brstats->syncp);
	brstats->tx_packets++;
	brstats->tx_bytes += skb->len;
	u64_stats_update_end(&brstats->syncp);

	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);

	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
406818ff	44	u64_stats_update_begin(&brstats->syncp);
14bb4789	45	brstats->tx_packets++;
14bb4789	46	brstats->tx_bytes += skb->len;
406818ff	47	u64_stats_update_end(&brstats->syncp);
6088a539	48
78851988	49	if (!br_allowed_ingress(br, br_get_vlan_info(br), skb, &vid))
a37b85c9 VY	50	goto out;
a37b85c9 VY	51
14bb4789	52	BR_INPUT_SKB_CB(skb)->brdev = dev;
1da177e4	53
459a98ed	54	skb_reset_mac_header(skb);
1da177e4 LT	55	skb_pull(skb, ETH_HLEN);
1da177e4 LT	56
44661462 HX	57	if (is_broadcast_ether_addr(dest))
	58	br_flood_deliver(br, skb);
	59	else if (is_multicast_ether_addr(dest)) {
91d2c34a HX	60	if (unlikely(netpoll_tx_running(dev))) {
	61	br_flood_deliver(br, skb);
	62	goto out;
	63	}
6d1d1d39 HX	64	if (br_multicast_rcv(br, NULL, skb)) {
6d1d1d39 HX	65	kfree_skb(skb);
c4fcb78c	66	goto out;
6d1d1d39	67	}
c4fcb78c	68
fbca58a2	69	mdst = br_mdb_get(br, skb, vid);
32dec5dd	70	if (mdst \|\| BR_INPUT_SKB_CB_MROUTERS_ONLY(skb))
c4fcb78c HX	71	br_multicast_deliver(mdst, skb);
	72	else
	73	br_flood_deliver(br, skb);
2ba071ec	74	} else if ((dst = __br_fdb_get(br, dest, vid)) != NULL)
1da177e4 LT	75	br_deliver(dst->dst, skb);
1da177e4 LT	76	else
e081e1e3	77	br_flood_deliver(br, skb);
1da177e4	78
c4fcb78c	79	out:
eeaf61d8	80	rcu_read_unlock();
6ed10654	81	return NETDEV_TX_OK;
1da177e4 LT	82	}
1da177e4 LT	83
bb900b27	84	static int br_dev_init(struct net_device *dev)
	85	{
	86	struct net_bridge *br = netdev_priv(dev);
	87
	88	br->stats = alloc_percpu(struct br_cpu_netstats);
	89	if (!br->stats)
	90	return -ENOMEM;
	91
	92	return 0;
	93	}
	94
1da177e4 LT	95	static int br_dev_open(struct net_device *dev)
1da177e4 LT	96	{
81d35307	97	struct net_bridge *br = netdev_priv(dev);
1da177e4	98
c4d27ef9	99	netdev_update_features(dev);
81d35307 SH	100	netif_start_queue(dev);
81d35307 SH	101	br_stp_enable_bridge(br);
3fe2d7c7	102	br_multicast_open(br);
1da177e4 LT	103
	104	return 0;
	105	}
	106
	107	static void br_dev_set_multicast_list(struct net_device *dev)
	108	{
	109	}
	110
	111	static int br_dev_stop(struct net_device *dev)
	112	{
3fe2d7c7 HX	113	struct net_bridge *br = netdev_priv(dev);
	114
	115	br_stp_disable_bridge(br);
	116	br_multicast_stop(br);
1da177e4 LT	117
	118	netif_stop_queue(dev);
	119
	120	return 0;
	121	}
	122
28172739 ED	123	static struct rtnl_link_stats64 br_get_stats64(struct net_device dev,
28172739 ED	124	struct rtnl_link_stats64 *stats)
14bb4789	125	{
14bb4789	126	struct net_bridge *br = netdev_priv(dev);
406818ff	127	struct br_cpu_netstats tmp, sum = { 0 };
14bb4789	128	unsigned int cpu;
	129
	130	for_each_possible_cpu(cpu) {
406818ff	131	unsigned int start;
14bb4789	132	const struct br_cpu_netstats *bstats
14bb4789	133	= per_cpu_ptr(br->stats, cpu);
406818ff	134	do {
e3906486	135	start = u64_stats_fetch_begin_bh(&bstats->syncp);
406818ff	136	memcpy(&tmp, bstats, sizeof(tmp));
e3906486	137	} while (u64_stats_fetch_retry_bh(&bstats->syncp, start));
406818ff ED	138	sum.tx_bytes += tmp.tx_bytes;
	139	sum.tx_packets += tmp.tx_packets;
	140	sum.rx_bytes += tmp.rx_bytes;
	141	sum.rx_packets += tmp.rx_packets;
14bb4789	142	}
	143
	144	stats->tx_bytes = sum.tx_bytes;
	145	stats->tx_packets = sum.tx_packets;
	146	stats->rx_bytes = sum.rx_bytes;
	147	stats->rx_packets = sum.rx_packets;
	148
	149	return stats;
	150	}
	151
1da177e4 LT	152	static int br_change_mtu(struct net_device *dev, int new_mtu)
1da177e4 LT	153	{
4adf0af6 SW	154	struct net_bridge *br = netdev_priv(dev);
4adf0af6 SW	155	if (new_mtu < 68 \|\| new_mtu > br_min_mtu(br))
1da177e4 LT	156	return -EINVAL;
	157
	158	dev->mtu = new_mtu;
4adf0af6 SW	159
	160	#ifdef CONFIG_BRIDGE_NETFILTER
	161	/* remember the MTU in the rtable for PMTU */
defb3519	162	dst_metric_set(&br->fake_rtable.dst, RTAX_MTU, new_mtu);
4adf0af6 SW	163	#endif
4adf0af6 SW	164
1da177e4 LT	165	return 0;
	166	}
	167
ffe1d49c	168	/* Allow setting mac address to any valid ethernet address. */
4505a3ef SH	169	static int br_set_mac_address(struct net_device dev, void p)
	170	{
	171	struct net_bridge *br = netdev_priv(dev);
	172	struct sockaddr *addr = p;
ffe1d49c SH	173
ffe1d49c SH	174	if (!is_valid_ether_addr(addr->sa_data))
7ca1e11a	175	return -EADDRNOTAVAIL;
4505a3ef SH	176
4505a3ef SH	177	spin_lock_bh(&br->lock);
9a7b6ef9	178	if (!ether_addr_equal(dev->dev_addr, addr->sa_data)) {
43598813	179	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
	180	br_fdb_change_mac_address(br, addr->sa_data);
	181	br_stp_change_bridge_id(br, addr->sa_data);
	182	}
4505a3ef SH	183	spin_unlock_bh(&br->lock);
4505a3ef SH	184
ffe1d49c	185	return 0;
4505a3ef SH	186	}
4505a3ef SH	187
edb5e46f SH	188	static void br_getinfo(struct net_device dev, struct ethtool_drvinfo info)
edb5e46f SH	189	{
7826d43f JP	190	strlcpy(info->driver, "bridge", sizeof(info->driver));
	191	strlcpy(info->version, BR_VERSION, sizeof(info->version));
	192	strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
	193	strlcpy(info->bus_info, "N/A", sizeof(info->bus_info));
edb5e46f SH	194	}
edb5e46f SH	195
c8f44aff MM	196	static netdev_features_t br_fix_features(struct net_device *dev,
c8f44aff MM	197	netdev_features_t features)
edb5e46f SH	198	{
	199	struct net_bridge *br = netdev_priv(dev);
	200
c4d27ef9	201	return br_features_recompute(br, features);
361ff8a6 JG	202	}
361ff8a6 JG	203
c06ee961	204	#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a	205	static void br_poll_controller(struct net_device *br_dev)
c06ee961	206	{
c06ee961 WC	207	}
c06ee961 WC	208
91d2c34a	209	static void br_netpoll_cleanup(struct net_device *dev)
c06ee961	210	{
91d2c34a	211	struct net_bridge *br = netdev_priv(dev);
4e3828c4	212	struct net_bridge_port *p;
c06ee961	213
4e3828c4	214	list_for_each_entry(p, &br->port_list, list)
91d2c34a	215	br_netpoll_disable(p);
c06ee961 WC	216	}
c06ee961 WC	217
47be03a2 AW	218	static int br_netpoll_setup(struct net_device dev, struct netpoll_info ni,
47be03a2 AW	219	gfp_t gfp)
c06ee961	220	{
cfb478da	221	struct net_bridge *br = netdev_priv(dev);
4e3828c4	222	struct net_bridge_port *p;
91d2c34a	223	int err = 0;
c06ee961	224
4e3828c4	225	list_for_each_entry(p, &br->port_list, list) {
91d2c34a HX	226	if (!p->dev)
91d2c34a HX	227	continue;
47be03a2	228	err = br_netpoll_enable(p, gfp);
91d2c34a HX	229	if (err)
91d2c34a HX	230	goto fail;
c06ee961	231	}
91d2c34a HX	232
	233	out:
	234	return err;
	235
	236	fail:
	237	br_netpoll_cleanup(dev);
	238	goto out;
c06ee961 WC	239	}
c06ee961 WC	240
47be03a2	241	int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
cfb478da	242	{
91d2c34a HX	243	struct netpoll *np;
	244	int err = 0;
	245
47be03a2	246	np = kzalloc(sizeof(*p->np), gfp);
91d2c34a HX	247	err = -ENOMEM;
	248	if (!np)
	249	goto out;
	250
47be03a2	251	err = __netpoll_setup(np, p->dev, gfp);
91d2c34a HX	252	if (err) {
	253	kfree(np);
	254	goto out;
	255	}
	256
	257	p->np = np;
	258
	259	out:
	260	return err;
cfb478da	261	}
c06ee961	262
91d2c34a	263	void br_netpoll_disable(struct net_bridge_port *p)
c06ee961	264	{
91d2c34a HX	265	struct netpoll *np = p->np;
	266
	267	if (!np)
	268	return;
	269
	270	p->np = NULL;
	271
2cde6acd	272	__netpoll_free_async(np);
c06ee961 WC	273	}
	274
	275	#endif
	276
afc6151a JP	277	static int br_add_slave(struct net_device dev, struct net_device slave_dev)
	278
	279	{
	280	struct net_bridge *br = netdev_priv(dev);
	281
	282	return br_add_if(br, slave_dev);
	283	}
	284
	285	static int br_del_slave(struct net_device dev, struct net_device slave_dev)
	286	{
	287	struct net_bridge *br = netdev_priv(dev);
	288
	289	return br_del_if(br, slave_dev);
	290	}
	291
a2dbb882	292	static const struct ethtool_ops br_ethtool_ops = {
e4119a43 SH	293	.get_drvinfo = br_getinfo,
e4119a43 SH	294	.get_link = ethtool_op_get_link,
edb5e46f SH	295	};
edb5e46f SH	296
a2dbb882 SH	297	static const struct net_device_ops br_netdev_ops = {
	298	.ndo_open = br_dev_open,
	299	.ndo_stop = br_dev_stop,
bb900b27	300	.ndo_init = br_dev_init,
00829823	301	.ndo_start_xmit = br_dev_xmit,
406818ff	302	.ndo_get_stats64 = br_get_stats64,
00829823	303	.ndo_set_mac_address = br_set_mac_address,
afc4b13d	304	.ndo_set_rx_mode = br_dev_set_multicast_list,
00829823 SH	305	.ndo_change_mtu = br_change_mtu,
00829823 SH	306	.ndo_do_ioctl = br_dev_ioctl,
c06ee961	307	#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a	308	.ndo_netpoll_setup = br_netpoll_setup,
c06ee961 WC	309	.ndo_netpoll_cleanup = br_netpoll_cleanup,
	310	.ndo_poll_controller = br_poll_controller,
	311	#endif
afc6151a JP	312	.ndo_add_slave = br_add_slave,
afc6151a JP	313	.ndo_del_slave = br_del_slave,
c4d27ef9	314	.ndo_fix_features = br_fix_features,
77162022 JF	315	.ndo_fdb_add = br_fdb_add,
	316	.ndo_fdb_del = br_fdb_delete,
	317	.ndo_fdb_dump = br_fdb_dump,
e5a55a89 JF	318	.ndo_bridge_getlink = br_getlink,
e5a55a89 JF	319	.ndo_bridge_setlink = br_setlink,
407af329	320	.ndo_bridge_dellink = br_dellink,
a2dbb882 SH	321	};
a2dbb882 SH	322
14bb4789	323	static void br_dev_free(struct net_device *dev)
	324	{
	325	struct net_bridge *br = netdev_priv(dev);
	326
	327	free_percpu(br->stats);
	328	free_netdev(dev);
	329	}
	330
bb900b27	331	static struct device_type br_type = {
	332	.name = "bridge",
	333	};
	334
1da177e4 LT	335	void br_dev_setup(struct net_device *dev)
1da177e4 LT	336	{
bb900b27	337	struct net_bridge *br = netdev_priv(dev);
bb900b27	338
7ce5d222	339	eth_hw_addr_random(dev);
1da177e4 LT	340	ether_setup(dev);
1da177e4 LT	341
a2dbb882	342	dev->netdev_ops = &br_netdev_ops;
14bb4789	343	dev->destructor = br_dev_free;
9d6f229f	344	SET_ETHTOOL_OPS(dev, &br_ethtool_ops);
bb900b27	345	SET_NETDEV_DEVTYPE(dev, &br_type);
1da177e4	346	dev->tx_queue_len = 0;
1da177e4	347	dev->priv_flags = IFF_EBRIDGE;
edb5e46f	348
9d6f229f	349	dev->features = NETIF_F_SG \| NETIF_F_FRAGLIST \| NETIF_F_HIGHDMA \|
34324dc2	350	NETIF_F_GSO_MASK \| NETIF_F_HW_CSUM \| NETIF_F_LLTX \|
f646968f	351	NETIF_F_NETNS_LOCAL \| NETIF_F_HW_VLAN_CTAG_TX;
c4d27ef9	352	dev->hw_features = NETIF_F_SG \| NETIF_F_FRAGLIST \| NETIF_F_HIGHDMA \|
34324dc2	353	NETIF_F_GSO_MASK \| NETIF_F_HW_CSUM \|
f646968f	354	NETIF_F_HW_VLAN_CTAG_TX;
bb900b27	355
	356	br->dev = dev;
	357	spin_lock_init(&br->lock);
	358	INIT_LIST_HEAD(&br->port_list);
	359	spin_lock_init(&br->hash_lock);
	360
	361	br->bridge_id.prio[0] = 0x80;
	362	br->bridge_id.prio[1] = 0x00;
	363
2bc80059	364	memcpy(br->group_addr, eth_reserved_addr_base, ETH_ALEN);
bb900b27	365
bb900b27	366	br->stp_enabled = BR_NO_STP;
515853cc	367	br->group_fwd_mask = BR_GROUPFWD_DEFAULT;
515853cc	368
bb900b27	369	br->designated_root = br->bridge_id;
	370	br->bridge_max_age = br->max_age = 20 * HZ;
	371	br->bridge_hello_time = br->hello_time = 2 * HZ;
	372	br->bridge_forward_delay = br->forward_delay = 15 * HZ;
	373	br->ageing_time = 300 * HZ;
	374
	375	br_netfilter_rtable_init(br);
	376	br_stp_timer_init(br);
	377	br_multicast_init(br);
1da177e4	378	}