[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);

#ifdef CONFIG_BRIDGE_NETFILTER
	if (skb->nf_bridge && (skb->nf_bridge->mask & BRNF_BRIDGED_DNAT)) {
		br_nf_pre_routing_finish_bridge_slow(skb);
		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);

	BR_INPUT_SKB_CB(skb)->brdev = dev;

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

	rcu_read_lock();
	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);
		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)) != 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);

	netif_carrier_off(dev);

	br_features_recompute(br);
	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);

	netif_carrier_off(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(&bstats->syncp);
			memcpy(&tmp, bstats, sizeof(tmp));
		} while (u64_stats_fetch_retry(&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 -EINVAL;

	spin_lock_bh(&br->lock);
	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
	br_stp_change_bridge_id(br, addr->sa_data);
	br->flags |= BR_SET_MAC_ADDR;
	spin_unlock_bh(&br->lock);

	return 0;
}

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

static int br_set_sg(struct net_device *dev, u32 data)
{
	struct net_bridge *br = netdev_priv(dev);

	if (data)
		br->feature_mask |= NETIF_F_SG;
	else
		br->feature_mask &= ~NETIF_F_SG;

	br_features_recompute(br);
	return 0;
}

static int br_set_tso(struct net_device *dev, u32 data)
{
	struct net_bridge *br = netdev_priv(dev);

	if (data)
		br->feature_mask |= NETIF_F_TSO;
	else
		br->feature_mask &= ~NETIF_F_TSO;

	br_features_recompute(br);
	return 0;
}

static int br_set_tx_csum(struct net_device *dev, u32 data)
{
	struct net_bridge *br = netdev_priv(dev);

	if (data)
		br->feature_mask |= NETIF_F_NO_CSUM;
	else
		br->feature_mask &= ~NETIF_F_ALL_CSUM;

	br_features_recompute(br);
	return 0;
}

static int br_set_flags(struct net_device *netdev, u32 data)
{
	return ethtool_op_set_flags(netdev, data, ETH_FLAG_TXVLAN);
}

#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, *n;

	list_for_each_entry_safe(p, n, &br->port_list, list) {
		br_netpoll_disable(p);
	}
}

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

	list_for_each_entry_safe(p, n, &br->port_list, list) {
		if (!p->dev)
			continue;

		err = br_netpoll_enable(p);
		if (err)
			goto fail;
	}

out:
	return err;

fail:
	br_netpoll_cleanup(dev);
	goto out;
}

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

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

	np->dev = p->dev;

	err = __netpoll_setup(np);
	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;

	/* Wait for transmitting packets to finish before freeing. */
	synchronize_rcu_bh();

	__netpoll_cleanup(np);
	kfree(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,
	.get_tx_csum	= ethtool_op_get_tx_csum,
	.set_tx_csum 	= br_set_tx_csum,
	.get_sg		= ethtool_op_get_sg,
	.set_sg		= br_set_sg,
	.get_tso	= ethtool_op_get_tso,
	.set_tso	= br_set_tso,
	.get_ufo	= ethtool_op_get_ufo,
	.set_ufo	= ethtool_op_set_ufo,
	.get_flags	= ethtool_op_get_flags,
	.set_flags	= br_set_flags,
};

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_multicast_list	 = 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,
};

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);

	random_ether_addr(dev->dev_addr);
	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_NO_CSUM | NETIF_F_LLTX |
			NETIF_F_NETNS_LOCAL | NETIF_F_GSO | NETIF_F_HW_VLAN_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, br_group_address, ETH_ALEN);

	br->feature_mask = dev->features;
	br->stp_enabled = BR_NO_STP;
	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);
1da177e4	33
ea2d9b41 BDS	34	#ifdef CONFIG_BRIDGE_NETFILTER
	35	if (skb->nf_bridge && (skb->nf_bridge->mask & BRNF_BRIDGED_DNAT)) {
	36	br_nf_pre_routing_finish_bridge_slow(skb);
	37	return NETDEV_TX_OK;
	38	}
	39	#endif
	40
406818ff	41	u64_stats_update_begin(&brstats->syncp);
14bb4789	42	brstats->tx_packets++;
14bb4789	43	brstats->tx_bytes += skb->len;
406818ff	44	u64_stats_update_end(&brstats->syncp);
6088a539	45
14bb4789	46	BR_INPUT_SKB_CB(skb)->brdev = dev;
1da177e4	47
459a98ed	48	skb_reset_mac_header(skb);
1da177e4 LT	49	skb_pull(skb, ETH_HLEN);
1da177e4 LT	50
eeaf61d8	51	rcu_read_lock();
7180f775	52	if (is_multicast_ether_addr(dest)) {
91d2c34a HX	53	if (unlikely(netpoll_tx_running(dev))) {
	54	br_flood_deliver(br, skb);
	55	goto out;
	56	}
6d1d1d39 HX	57	if (br_multicast_rcv(br, NULL, skb)) {
6d1d1d39 HX	58	kfree_skb(skb);
c4fcb78c	59	goto out;
6d1d1d39	60	}
c4fcb78c HX	61
c4fcb78c HX	62	mdst = br_mdb_get(br, skb);
32dec5dd	63	if (mdst \|\| BR_INPUT_SKB_CB_MROUTERS_ONLY(skb))
c4fcb78c HX	64	br_multicast_deliver(mdst, skb);
	65	else
	66	br_flood_deliver(br, skb);
	67	} else if ((dst = __br_fdb_get(br, dest)) != NULL)
1da177e4 LT	68	br_deliver(dst->dst, skb);
1da177e4 LT	69	else
e081e1e3	70	br_flood_deliver(br, skb);
1da177e4	71
c4fcb78c	72	out:
eeaf61d8	73	rcu_read_unlock();
6ed10654	74	return NETDEV_TX_OK;
1da177e4 LT	75	}
1da177e4 LT	76
bb900b27	77	static int br_dev_init(struct net_device *dev)
	78	{
	79	struct net_bridge *br = netdev_priv(dev);
	80
	81	br->stats = alloc_percpu(struct br_cpu_netstats);
	82	if (!br->stats)
	83	return -ENOMEM;
	84
	85	return 0;
	86	}
	87
1da177e4 LT	88	static int br_dev_open(struct net_device *dev)
1da177e4 LT	89	{
81d35307	90	struct net_bridge *br = netdev_priv(dev);
1da177e4	91
1faa4356	92	netif_carrier_off(dev);
1faa4356	93
81d35307 SH	94	br_features_recompute(br);
	95	netif_start_queue(dev);
	96	br_stp_enable_bridge(br);
3fe2d7c7	97	br_multicast_open(br);
1da177e4 LT	98
	99	return 0;
	100	}
	101
	102	static void br_dev_set_multicast_list(struct net_device *dev)
	103	{
	104	}
	105
	106	static int br_dev_stop(struct net_device *dev)
	107	{
3fe2d7c7 HX	108	struct net_bridge *br = netdev_priv(dev);
3fe2d7c7 HX	109
1faa4356	110	netif_carrier_off(dev);
1faa4356	111
3fe2d7c7 HX	112	br_stp_disable_bridge(br);
3fe2d7c7 HX	113	br_multicast_stop(br);
1da177e4 LT	114
	115	netif_stop_queue(dev);
	116
	117	return 0;
	118	}
	119
28172739 ED	120	static struct rtnl_link_stats64 br_get_stats64(struct net_device dev,
28172739 ED	121	struct rtnl_link_stats64 *stats)
14bb4789	122	{
14bb4789	123	struct net_bridge *br = netdev_priv(dev);
406818ff	124	struct br_cpu_netstats tmp, sum = { 0 };
14bb4789	125	unsigned int cpu;
	126
	127	for_each_possible_cpu(cpu) {
406818ff	128	unsigned int start;
14bb4789	129	const struct br_cpu_netstats *bstats
14bb4789	130	= per_cpu_ptr(br->stats, cpu);
406818ff ED	131	do {
	132	start = u64_stats_fetch_begin(&bstats->syncp);
	133	memcpy(&tmp, bstats, sizeof(tmp));
	134	} while (u64_stats_fetch_retry(&bstats->syncp, start));
	135	sum.tx_bytes += tmp.tx_bytes;
	136	sum.tx_packets += tmp.tx_packets;
	137	sum.rx_bytes += tmp.rx_bytes;
	138	sum.rx_packets += tmp.rx_packets;
14bb4789	139	}
	140
	141	stats->tx_bytes = sum.tx_bytes;
	142	stats->tx_packets = sum.tx_packets;
	143	stats->rx_bytes = sum.rx_bytes;
	144	stats->rx_packets = sum.rx_packets;
	145
	146	return stats;
	147	}
	148
1da177e4 LT	149	static int br_change_mtu(struct net_device *dev, int new_mtu)
1da177e4 LT	150	{
4adf0af6 SW	151	struct net_bridge *br = netdev_priv(dev);
4adf0af6 SW	152	if (new_mtu < 68 \|\| new_mtu > br_min_mtu(br))
1da177e4 LT	153	return -EINVAL;
	154
	155	dev->mtu = new_mtu;
4adf0af6 SW	156
	157	#ifdef CONFIG_BRIDGE_NETFILTER
	158	/* remember the MTU in the rtable for PMTU */
defb3519	159	dst_metric_set(&br->fake_rtable.dst, RTAX_MTU, new_mtu);
4adf0af6 SW	160	#endif
4adf0af6 SW	161
1da177e4 LT	162	return 0;
	163	}
	164
ffe1d49c	165	/* Allow setting mac address to any valid ethernet address. */
4505a3ef SH	166	static int br_set_mac_address(struct net_device dev, void p)
	167	{
	168	struct net_bridge *br = netdev_priv(dev);
	169	struct sockaddr *addr = p;
ffe1d49c SH	170
	171	if (!is_valid_ether_addr(addr->sa_data))
	172	return -EINVAL;
4505a3ef SH	173
4505a3ef SH	174	spin_lock_bh(&br->lock);
ffe1d49c SH	175	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
ffe1d49c SH	176	br_stp_change_bridge_id(br, addr->sa_data);
92c0574f	177	br->flags \|= BR_SET_MAC_ADDR;
4505a3ef SH	178	spin_unlock_bh(&br->lock);
4505a3ef SH	179
ffe1d49c	180	return 0;
4505a3ef SH	181	}
4505a3ef SH	182
edb5e46f SH	183	static void br_getinfo(struct net_device dev, struct ethtool_drvinfo info)
	184	{
	185	strcpy(info->driver, "bridge");
	186	strcpy(info->version, BR_VERSION);
	187	strcpy(info->fw_version, "N/A");
	188	strcpy(info->bus_info, "N/A");
	189	}
	190
	191	static int br_set_sg(struct net_device *dev, u32 data)
	192	{
	193	struct net_bridge *br = netdev_priv(dev);
	194
	195	if (data)
	196	br->feature_mask \|= NETIF_F_SG;
	197	else
	198	br->feature_mask &= ~NETIF_F_SG;
	199
	200	br_features_recompute(br);
	201	return 0;
	202	}
	203
	204	static int br_set_tso(struct net_device *dev, u32 data)
	205	{
	206	struct net_bridge *br = netdev_priv(dev);
	207
	208	if (data)
	209	br->feature_mask \|= NETIF_F_TSO;
	210	else
	211	br->feature_mask &= ~NETIF_F_TSO;
	212
	213	br_features_recompute(br);
	214	return 0;
	215	}
	216
	217	static int br_set_tx_csum(struct net_device *dev, u32 data)
	218	{
	219	struct net_bridge *br = netdev_priv(dev);
	220
	221	if (data)
2c6cc0d8	222	br->feature_mask \|= NETIF_F_NO_CSUM;
edb5e46f	223	else
2c6cc0d8	224	br->feature_mask &= ~NETIF_F_ALL_CSUM;
edb5e46f SH	225
	226	br_features_recompute(br);
	227	return 0;
	228	}
	229
361ff8a6 JG	230	static int br_set_flags(struct net_device *netdev, u32 data)
	231	{
	232	return ethtool_op_set_flags(netdev, data, ETH_FLAG_TXVLAN);
	233	}
	234
c06ee961	235	#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a	236	static void br_poll_controller(struct net_device *br_dev)
c06ee961	237	{
c06ee961 WC	238	}
c06ee961 WC	239
91d2c34a	240	static void br_netpoll_cleanup(struct net_device *dev)
c06ee961	241	{
91d2c34a HX	242	struct net_bridge *br = netdev_priv(dev);
91d2c34a HX	243	struct net_bridge_port p, n;
c06ee961	244
91d2c34a HX	245	list_for_each_entry_safe(p, n, &br->port_list, list) {
	246	br_netpoll_disable(p);
	247	}
c06ee961 WC	248	}
c06ee961 WC	249
91d2c34a	250	static int br_netpoll_setup(struct net_device dev, struct netpoll_info ni)
c06ee961	251	{
cfb478da	252	struct net_bridge *br = netdev_priv(dev);
c06ee961	253	struct net_bridge_port p, n;
91d2c34a	254	int err = 0;
c06ee961	255
c06ee961	256	list_for_each_entry_safe(p, n, &br->port_list, list) {
91d2c34a HX	257	if (!p->dev)
	258	continue;
	259
	260	err = br_netpoll_enable(p);
	261	if (err)
	262	goto fail;
c06ee961	263	}
91d2c34a HX	264
	265	out:
	266	return err;
	267
	268	fail:
	269	br_netpoll_cleanup(dev);
	270	goto out;
c06ee961 WC	271	}
c06ee961 WC	272
91d2c34a	273	int br_netpoll_enable(struct net_bridge_port *p)
cfb478da	274	{
91d2c34a HX	275	struct netpoll *np;
	276	int err = 0;
	277
	278	np = kzalloc(sizeof(*p->np), GFP_KERNEL);
	279	err = -ENOMEM;
	280	if (!np)
	281	goto out;
	282
	283	np->dev = p->dev;
	284
	285	err = __netpoll_setup(np);
	286	if (err) {
	287	kfree(np);
	288	goto out;
	289	}
	290
	291	p->np = np;
	292
	293	out:
	294	return err;
cfb478da	295	}
c06ee961	296
91d2c34a	297	void br_netpoll_disable(struct net_bridge_port *p)
c06ee961	298	{
91d2c34a HX	299	struct netpoll *np = p->np;
	300
	301	if (!np)
	302	return;
	303
	304	p->np = NULL;
	305
	306	/* Wait for transmitting packets to finish before freeing. */
	307	synchronize_rcu_bh();
	308
	309	__netpoll_cleanup(np);
	310	kfree(np);
c06ee961 WC	311	}
	312
	313	#endif
	314
afc6151a JP	315	static int br_add_slave(struct net_device dev, struct net_device slave_dev)
	316
	317	{
	318	struct net_bridge *br = netdev_priv(dev);
	319
	320	return br_add_if(br, slave_dev);
	321	}
	322
	323	static int br_del_slave(struct net_device dev, struct net_device slave_dev)
	324	{
	325	struct net_bridge *br = netdev_priv(dev);
	326
	327	return br_del_if(br, slave_dev);
	328	}
	329
a2dbb882	330	static const struct ethtool_ops br_ethtool_ops = {
e4119a43 SH	331	.get_drvinfo = br_getinfo,
	332	.get_link = ethtool_op_get_link,
	333	.get_tx_csum = ethtool_op_get_tx_csum,
	334	.set_tx_csum = br_set_tx_csum,
	335	.get_sg = ethtool_op_get_sg,
	336	.set_sg = br_set_sg,
	337	.get_tso = ethtool_op_get_tso,
	338	.set_tso = br_set_tso,
	339	.get_ufo = ethtool_op_get_ufo,
72dad218	340	.set_ufo = ethtool_op_set_ufo,
e4119a43	341	.get_flags = ethtool_op_get_flags,
361ff8a6	342	.set_flags = br_set_flags,
edb5e46f SH	343	};
edb5e46f SH	344
a2dbb882 SH	345	static const struct net_device_ops br_netdev_ops = {
	346	.ndo_open = br_dev_open,
	347	.ndo_stop = br_dev_stop,
bb900b27	348	.ndo_init = br_dev_init,
00829823	349	.ndo_start_xmit = br_dev_xmit,
406818ff	350	.ndo_get_stats64 = br_get_stats64,
00829823 SH	351	.ndo_set_mac_address = br_set_mac_address,
	352	.ndo_set_multicast_list = br_dev_set_multicast_list,
	353	.ndo_change_mtu = br_change_mtu,
	354	.ndo_do_ioctl = br_dev_ioctl,
c06ee961	355	#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a	356	.ndo_netpoll_setup = br_netpoll_setup,
c06ee961 WC	357	.ndo_netpoll_cleanup = br_netpoll_cleanup,
	358	.ndo_poll_controller = br_poll_controller,
	359	#endif
afc6151a JP	360	.ndo_add_slave = br_add_slave,
afc6151a JP	361	.ndo_del_slave = br_del_slave,
a2dbb882 SH	362	};
a2dbb882 SH	363
14bb4789	364	static void br_dev_free(struct net_device *dev)
	365	{
	366	struct net_bridge *br = netdev_priv(dev);
	367
	368	free_percpu(br->stats);
	369	free_netdev(dev);
	370	}
	371
bb900b27	372	static struct device_type br_type = {
	373	.name = "bridge",
	374	};
	375
1da177e4 LT	376	void br_dev_setup(struct net_device *dev)
1da177e4 LT	377	{
bb900b27	378	struct net_bridge *br = netdev_priv(dev);
bb900b27	379
3ae41254	380	random_ether_addr(dev->dev_addr);
1da177e4 LT	381	ether_setup(dev);
1da177e4 LT	382
a2dbb882	383	dev->netdev_ops = &br_netdev_ops;
14bb4789	384	dev->destructor = br_dev_free;
9d6f229f	385	SET_ETHTOOL_OPS(dev, &br_ethtool_ops);
bb900b27	386	SET_NETDEV_DEVTYPE(dev, &br_type);
1da177e4	387	dev->tx_queue_len = 0;
1da177e4	388	dev->priv_flags = IFF_EBRIDGE;
edb5e46f	389
9d6f229f	390	dev->features = NETIF_F_SG \| NETIF_F_FRAGLIST \| NETIF_F_HIGHDMA \|
4aa678ba	391	NETIF_F_GSO_MASK \| NETIF_F_NO_CSUM \| NETIF_F_LLTX \|
361ff8a6	392	NETIF_F_NETNS_LOCAL \| NETIF_F_GSO \| NETIF_F_HW_VLAN_TX;
bb900b27	393
	394	br->dev = dev;
	395	spin_lock_init(&br->lock);
	396	INIT_LIST_HEAD(&br->port_list);
	397	spin_lock_init(&br->hash_lock);
	398
	399	br->bridge_id.prio[0] = 0x80;
	400	br->bridge_id.prio[1] = 0x00;
	401
	402	memcpy(br->group_addr, br_group_address, ETH_ALEN);
	403
	404	br->feature_mask = dev->features;
	405	br->stp_enabled = BR_NO_STP;
	406	br->designated_root = br->bridge_id;
	407	br->bridge_max_age = br->max_age = 20 * HZ;
	408	br->bridge_hello_time = br->hello_time = 2 * HZ;
	409	br->bridge_forward_delay = br->forward_delay = 15 * HZ;
	410	br->ageing_time = 300 * HZ;
	411
	412	br_netfilter_rtable_init(br);
	413	br_stp_timer_init(br);
	414	br_multicast_init(br);
1da177e4	415	}