[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / dsa / slave.c

/*
 * net/dsa/slave.c - Slave device handling
 * Copyright (c) 2008 Marvell Semiconductor
 *
 * 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/list.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/phy.h>
#include "dsa_priv.h"

/* slave mii_bus handling ***************************************************/
static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
{
	struct dsa_switch *ds = bus->priv;

	if (ds->valid_port_mask & (1 << addr))
		return ds->drv->phy_read(ds, addr, reg);

	return 0xffff;
}

static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
{
	struct dsa_switch *ds = bus->priv;

	if (ds->valid_port_mask & (1 << addr))
		return ds->drv->phy_write(ds, addr, reg, val);

	return 0;
}

void dsa_slave_mii_bus_init(struct dsa_switch *ds)
{
	ds->slave_mii_bus->priv = (void *)ds;
	ds->slave_mii_bus->name = "dsa slave smi";
	ds->slave_mii_bus->read = dsa_slave_phy_read;
	ds->slave_mii_bus->write = dsa_slave_phy_write;
	snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "%s:%.2x",
			ds->master_mii_bus->id, ds->pd->sw_addr);
	ds->slave_mii_bus->parent = &(ds->master_mii_bus->dev);
}


/* slave device handling ****************************************************/
static int dsa_slave_open(struct net_device *dev)
{
	struct dsa_slave_priv *p = netdev_priv(dev);
	struct net_device *master = p->parent->master_netdev;
	int err;

	if (!(master->flags & IFF_UP))
		return -ENETDOWN;

	if (compare_ether_addr(dev->dev_addr, master->dev_addr)) {
		err = dev_unicast_add(master, dev->dev_addr, ETH_ALEN);
		if (err < 0)
			goto out;
	}

	if (dev->flags & IFF_ALLMULTI) {
		err = dev_set_allmulti(master, 1);
		if (err < 0)
			goto del_unicast;
	}
	if (dev->flags & IFF_PROMISC) {
		err = dev_set_promiscuity(master, 1);
		if (err < 0)
			goto clear_allmulti;
	}

	return 0;

clear_allmulti:
	if (dev->flags & IFF_ALLMULTI)
		dev_set_allmulti(master, -1);
del_unicast:
	if (compare_ether_addr(dev->dev_addr, master->dev_addr))
		dev_unicast_delete(master, dev->dev_addr, ETH_ALEN);
out:
	return err;
}

static int dsa_slave_close(struct net_device *dev)
{
	struct dsa_slave_priv *p = netdev_priv(dev);
	struct net_device *master = p->parent->master_netdev;

	dev_mc_unsync(master, dev);
	dev_unicast_unsync(master, dev);
	if (dev->flags & IFF_ALLMULTI)
		dev_set_allmulti(master, -1);
	if (dev->flags & IFF_PROMISC)
		dev_set_promiscuity(master, -1);

	if (compare_ether_addr(dev->dev_addr, master->dev_addr))
		dev_unicast_delete(master, dev->dev_addr, ETH_ALEN);

	return 0;
}

static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
{
	struct dsa_slave_priv *p = netdev_priv(dev);
	struct net_device *master = p->parent->master_netdev;

	if (change & IFF_ALLMULTI)
		dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
	if (change & IFF_PROMISC)
		dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
}

static void dsa_slave_set_rx_mode(struct net_device *dev)
{
	struct dsa_slave_priv *p = netdev_priv(dev);
	struct net_device *master = p->parent->master_netdev;

	dev_mc_sync(master, dev);
	dev_unicast_sync(master, dev);
}

static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
{
	struct dsa_slave_priv *p = netdev_priv(dev);
	struct net_device *master = p->parent->master_netdev;
	struct sockaddr *addr = a;
	int err;

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

	if (!(dev->flags & IFF_UP))
		goto out;

	if (compare_ether_addr(addr->sa_data, master->dev_addr)) {
		err = dev_unicast_add(master, addr->sa_data, ETH_ALEN);
		if (err < 0)
			return err;
	}

	if (compare_ether_addr(dev->dev_addr, master->dev_addr))
		dev_unicast_delete(master, dev->dev_addr, ETH_ALEN);

out:
	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);

	return 0;
}

static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
	struct dsa_slave_priv *p = netdev_priv(dev);
	struct mii_ioctl_data *mii_data = if_mii(ifr);

	if (p->phy != NULL)
		return phy_mii_ioctl(p->phy, mii_data, cmd);

	return -EOPNOTSUPP;
}


/* ethtool operations *******************************************************/
static int
dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct dsa_slave_priv *p = netdev_priv(dev);
	int err;

	err = -EOPNOTSUPP;
	if (p->phy != NULL) {
		err = phy_read_status(p->phy);
		if (err == 0)
			err = phy_ethtool_gset(p->phy, cmd);
	}

	return err;
}

static int
dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct dsa_slave_priv *p = netdev_priv(dev);

	if (p->phy != NULL)
		return phy_ethtool_sset(p->phy, cmd);

	return -EOPNOTSUPP;
}

static void dsa_slave_get_drvinfo(struct net_device *dev,
				  struct ethtool_drvinfo *drvinfo)
{
	strncpy(drvinfo->driver, "dsa", 32);
	strncpy(drvinfo->version, dsa_driver_version, 32);
	strncpy(drvinfo->fw_version, "N/A", 32);
	strncpy(drvinfo->bus_info, "platform", 32);
}

static int dsa_slave_nway_reset(struct net_device *dev)
{
	struct dsa_slave_priv *p = netdev_priv(dev);

	if (p->phy != NULL)
		return genphy_restart_aneg(p->phy);

	return -EOPNOTSUPP;
}

static u32 dsa_slave_get_link(struct net_device *dev)
{
	struct dsa_slave_priv *p = netdev_priv(dev);

	if (p->phy != NULL) {
		genphy_update_link(p->phy);
		return p->phy->link;
	}

	return -EOPNOTSUPP;
}

static void dsa_slave_get_strings(struct net_device *dev,
				  uint32_t stringset, uint8_t *data)
{
	struct dsa_slave_priv *p = netdev_priv(dev);
	struct dsa_switch *ds = p->parent;

	if (stringset == ETH_SS_STATS) {
		int len = ETH_GSTRING_LEN;

		strncpy(data, "tx_packets", len);
		strncpy(data + len, "tx_bytes", len);
		strncpy(data + 2 * len, "rx_packets", len);
		strncpy(data + 3 * len, "rx_bytes", len);
		if (ds->drv->get_strings != NULL)
			ds->drv->get_strings(ds, p->port, data + 4 * len);
	}
}

static void dsa_slave_get_ethtool_stats(struct net_device *dev,
					struct ethtool_stats *stats,
					uint64_t *data)
{
	struct dsa_slave_priv *p = netdev_priv(dev);
	struct dsa_switch *ds = p->parent;

	data[0] = p->dev->stats.tx_packets;
	data[1] = p->dev->stats.tx_bytes;
	data[2] = p->dev->stats.rx_packets;
	data[3] = p->dev->stats.rx_bytes;
	if (ds->drv->get_ethtool_stats != NULL)
		ds->drv->get_ethtool_stats(ds, p->port, data + 4);
}

static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
{
	struct dsa_slave_priv *p = netdev_priv(dev);
	struct dsa_switch *ds = p->parent;

	if (sset == ETH_SS_STATS) {
		int count;

		count = 4;
		if (ds->drv->get_sset_count != NULL)
			count += ds->drv->get_sset_count(ds);

		return count;
	}

	return -EOPNOTSUPP;
}

static const struct ethtool_ops dsa_slave_ethtool_ops = {
	.get_settings		= dsa_slave_get_settings,
	.set_settings		= dsa_slave_set_settings,
	.get_drvinfo		= dsa_slave_get_drvinfo,
	.nway_reset		= dsa_slave_nway_reset,
	.get_link		= dsa_slave_get_link,
	.set_sg			= ethtool_op_set_sg,
	.get_strings		= dsa_slave_get_strings,
	.get_ethtool_stats	= dsa_slave_get_ethtool_stats,
	.get_sset_count		= dsa_slave_get_sset_count,
};


/* slave device setup *******************************************************/
struct net_device *
dsa_slave_create(struct dsa_switch *ds, struct device *parent,
		 int port, char *name)
{
	struct net_device *master = ds->master_netdev;
	struct net_device *slave_dev;
	struct dsa_slave_priv *p;
	int ret;

	slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv),
				 name, ether_setup);
	if (slave_dev == NULL)
		return slave_dev;

	slave_dev->features = master->vlan_features;
	SET_ETHTOOL_OPS(slave_dev, &dsa_slave_ethtool_ops);
	memcpy(slave_dev->dev_addr, master->dev_addr, ETH_ALEN);
	slave_dev->tx_queue_len = 0;
	switch (ds->tag_protocol) {
#ifdef CONFIG_NET_DSA_TAG_DSA
	case htons(ETH_P_DSA):
		slave_dev->hard_start_xmit = dsa_xmit;
		break;
#endif
#ifdef CONFIG_NET_DSA_TAG_EDSA
	case htons(ETH_P_EDSA):
		slave_dev->hard_start_xmit = edsa_xmit;
		break;
#endif
#ifdef CONFIG_NET_DSA_TAG_TRAILER
	case htons(ETH_P_TRAILER):
		slave_dev->hard_start_xmit = trailer_xmit;
		break;
#endif
	default:
		BUG();
	}
	slave_dev->open = dsa_slave_open;
	slave_dev->stop = dsa_slave_close;
	slave_dev->change_rx_flags = dsa_slave_change_rx_flags;
	slave_dev->set_rx_mode = dsa_slave_set_rx_mode;
	slave_dev->set_multicast_list = dsa_slave_set_rx_mode;
	slave_dev->set_mac_address = dsa_slave_set_mac_address;
	slave_dev->do_ioctl = dsa_slave_ioctl;
	SET_NETDEV_DEV(slave_dev, parent);
	slave_dev->vlan_features = master->vlan_features;

	p = netdev_priv(slave_dev);
	p->dev = slave_dev;
	p->parent = ds;
	p->port = port;
	p->phy = ds->slave_mii_bus->phy_map[port];

	ret = register_netdev(slave_dev);
	if (ret) {
		printk(KERN_ERR "%s: error %d registering interface %s\n",
				master->name, ret, slave_dev->name);
		free_netdev(slave_dev);
		return NULL;
	}

	netif_carrier_off(slave_dev);

	if (p->phy != NULL) {
		phy_attach(slave_dev, p->phy->dev.bus_id,
			   0, PHY_INTERFACE_MODE_GMII);

		p->phy->autoneg = AUTONEG_ENABLE;
		p->phy->speed = 0;
		p->phy->duplex = 0;
		p->phy->advertising = p->phy->supported | ADVERTISED_Autoneg;
		phy_start_aneg(p->phy);
	}

	return slave_dev;
}
Commit	Line	Data
91da11f8 LB	1	/*
	2	* net/dsa/slave.c - Slave device handling
	3	* Copyright (c) 2008 Marvell Semiconductor
	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.
	9	*/
	10
	11	#include <linux/list.h>
	12	#include <linux/netdevice.h>
df02c6ff	13	#include <linux/etherdevice.h>
91da11f8 LB	14	#include <linux/phy.h>
	15	#include "dsa_priv.h"
	16
	17	/* slave mii_bus handling ***************************************************/
	18	static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
	19	{
	20	struct dsa_switch *ds = bus->priv;
	21
	22	if (ds->valid_port_mask & (1 << addr))
	23	return ds->drv->phy_read(ds, addr, reg);
	24
	25	return 0xffff;
	26	}
	27
	28	static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
	29	{
	30	struct dsa_switch *ds = bus->priv;
	31
	32	if (ds->valid_port_mask & (1 << addr))
	33	return ds->drv->phy_write(ds, addr, reg, val);
	34
	35	return 0;
	36	}
	37
	38	void dsa_slave_mii_bus_init(struct dsa_switch *ds)
	39	{
	40	ds->slave_mii_bus->priv = (void *)ds;
	41	ds->slave_mii_bus->name = "dsa slave smi";
	42	ds->slave_mii_bus->read = dsa_slave_phy_read;
	43	ds->slave_mii_bus->write = dsa_slave_phy_write;
	44	snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "%s:%.2x",
	45	ds->master_mii_bus->id, ds->pd->sw_addr);
	46	ds->slave_mii_bus->parent = &(ds->master_mii_bus->dev);
	47	}
	48
	49
	50	/* slave device handling ****************************************************/
	51	static int dsa_slave_open(struct net_device *dev)
	52	{
df02c6ff LB	53	struct dsa_slave_priv *p = netdev_priv(dev);
	54	struct net_device *master = p->parent->master_netdev;
	55	int err;
	56
	57	if (!(master->flags & IFF_UP))
	58	return -ENETDOWN;
	59
	60	if (compare_ether_addr(dev->dev_addr, master->dev_addr)) {
	61	err = dev_unicast_add(master, dev->dev_addr, ETH_ALEN);
	62	if (err < 0)
	63	goto out;
	64	}
	65
	66	if (dev->flags & IFF_ALLMULTI) {
	67	err = dev_set_allmulti(master, 1);
	68	if (err < 0)
	69	goto del_unicast;
	70	}
	71	if (dev->flags & IFF_PROMISC) {
	72	err = dev_set_promiscuity(master, 1);
	73	if (err < 0)
	74	goto clear_allmulti;
	75	}
	76
91da11f8	77	return 0;
df02c6ff LB	78
	79	clear_allmulti:
	80	if (dev->flags & IFF_ALLMULTI)
	81	dev_set_allmulti(master, -1);
	82	del_unicast:
	83	if (compare_ether_addr(dev->dev_addr, master->dev_addr))
	84	dev_unicast_delete(master, dev->dev_addr, ETH_ALEN);
	85	out:
	86	return err;
91da11f8 LB	87	}
	88
	89	static int dsa_slave_close(struct net_device *dev)
	90	{
df02c6ff LB	91	struct dsa_slave_priv *p = netdev_priv(dev);
	92	struct net_device *master = p->parent->master_netdev;
	93
	94	dev_mc_unsync(master, dev);
	95	dev_unicast_unsync(master, dev);
	96	if (dev->flags & IFF_ALLMULTI)
	97	dev_set_allmulti(master, -1);
	98	if (dev->flags & IFF_PROMISC)
	99	dev_set_promiscuity(master, -1);
	100
	101	if (compare_ether_addr(dev->dev_addr, master->dev_addr))
	102	dev_unicast_delete(master, dev->dev_addr, ETH_ALEN);
	103
91da11f8 LB	104	return 0;
	105	}
	106
	107	static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
	108	{
	109	struct dsa_slave_priv *p = netdev_priv(dev);
	110	struct net_device *master = p->parent->master_netdev;
	111
	112	if (change & IFF_ALLMULTI)
	113	dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
	114	if (change & IFF_PROMISC)
	115	dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
	116	}
	117
	118	static void dsa_slave_set_rx_mode(struct net_device *dev)
	119	{
	120	struct dsa_slave_priv *p = netdev_priv(dev);
	121	struct net_device *master = p->parent->master_netdev;
	122
	123	dev_mc_sync(master, dev);
	124	dev_unicast_sync(master, dev);
	125	}
	126
df02c6ff	127	static int dsa_slave_set_mac_address(struct net_device dev, void a)
91da11f8	128	{
df02c6ff LB	129	struct dsa_slave_priv *p = netdev_priv(dev);
	130	struct net_device *master = p->parent->master_netdev;
	131	struct sockaddr *addr = a;
	132	int err;
	133
	134	if (!is_valid_ether_addr(addr->sa_data))
	135	return -EADDRNOTAVAIL;
	136
	137	if (!(dev->flags & IFF_UP))
	138	goto out;
	139
	140	if (compare_ether_addr(addr->sa_data, master->dev_addr)) {
	141	err = dev_unicast_add(master, addr->sa_data, ETH_ALEN);
	142	if (err < 0)
	143	return err;
	144	}
	145
	146	if (compare_ether_addr(dev->dev_addr, master->dev_addr))
	147	dev_unicast_delete(master, dev->dev_addr, ETH_ALEN);
	148
	149	out:
	150	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
91da11f8 LB	151
	152	return 0;
	153	}
	154
	155	static int dsa_slave_ioctl(struct net_device dev, struct ifreq ifr, int cmd)
	156	{
	157	struct dsa_slave_priv *p = netdev_priv(dev);
	158	struct mii_ioctl_data *mii_data = if_mii(ifr);
	159
	160	if (p->phy != NULL)
	161	return phy_mii_ioctl(p->phy, mii_data, cmd);
	162
	163	return -EOPNOTSUPP;
	164	}
	165
	166
	167	/* ethtool operations *******************************************************/
	168	static int
	169	dsa_slave_get_settings(struct net_device dev, struct ethtool_cmd cmd)
	170	{
	171	struct dsa_slave_priv *p = netdev_priv(dev);
	172	int err;
	173
	174	err = -EOPNOTSUPP;
	175	if (p->phy != NULL) {
	176	err = phy_read_status(p->phy);
	177	if (err == 0)
	178	err = phy_ethtool_gset(p->phy, cmd);
	179	}
	180
	181	return err;
	182	}
	183
	184	static int
	185	dsa_slave_set_settings(struct net_device dev, struct ethtool_cmd cmd)
	186	{
	187	struct dsa_slave_priv *p = netdev_priv(dev);
	188
	189	if (p->phy != NULL)
	190	return phy_ethtool_sset(p->phy, cmd);
	191
	192	return -EOPNOTSUPP;
	193	}
	194
	195	static void dsa_slave_get_drvinfo(struct net_device *dev,
	196	struct ethtool_drvinfo *drvinfo)
	197	{
	198	strncpy(drvinfo->driver, "dsa", 32);
	199	strncpy(drvinfo->version, dsa_driver_version, 32);
	200	strncpy(drvinfo->fw_version, "N/A", 32);
	201	strncpy(drvinfo->bus_info, "platform", 32);
	202	}
	203
	204	static int dsa_slave_nway_reset(struct net_device *dev)
	205	{
	206	struct dsa_slave_priv *p = netdev_priv(dev);
	207
	208	if (p->phy != NULL)
	209	return genphy_restart_aneg(p->phy);
	210
	211	return -EOPNOTSUPP;
	212	}
	213
	214	static u32 dsa_slave_get_link(struct net_device *dev)
215	{
216	struct dsa_slave_priv *p = netdev_priv(dev);
217
218	if (p->phy != NULL) {
219	genphy_update_link(p->phy);
220	return p->phy->link;
221	}
222
223	return -EOPNOTSUPP;
224	}
225
226	static void dsa_slave_get_strings(struct net_device *dev,
227	uint32_t stringset, uint8_t *data)
228	{
229	struct dsa_slave_priv *p = netdev_priv(dev);
230	struct dsa_switch *ds = p->parent;
231
232	if (stringset == ETH_SS_STATS) {
233	int len = ETH_GSTRING_LEN;
234
235	strncpy(data, "tx_packets", len);
236	strncpy(data + len, "tx_bytes", len);
237	strncpy(data + 2 * len, "rx_packets", len);
238	strncpy(data + 3 * len, "rx_bytes", len);
239	if (ds->drv->get_strings != NULL)
240	ds->drv->get_strings(ds, p->port, data + 4 * len);
241	}
242	}
243
244	static void dsa_slave_get_ethtool_stats(struct net_device *dev,
245	struct ethtool_stats *stats,
246	uint64_t *data)
247	{
248	struct dsa_slave_priv *p = netdev_priv(dev);
249	struct dsa_switch *ds = p->parent;
250
251	data[0] = p->dev->stats.tx_packets;
252	data[1] = p->dev->stats.tx_bytes;
253	data[2] = p->dev->stats.rx_packets;
254	data[3] = p->dev->stats.rx_bytes;
255	if (ds->drv->get_ethtool_stats != NULL)
256	ds->drv->get_ethtool_stats(ds, p->port, data + 4);
257	}
258
259	static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
260	{
261	struct dsa_slave_priv *p = netdev_priv(dev);
262	struct dsa_switch *ds = p->parent;
263
264	if (sset == ETH_SS_STATS) {
265	int count;
266
267	count = 4;
268	if (ds->drv->get_sset_count != NULL)
269	count += ds->drv->get_sset_count(ds);
270
271	return count;
272	}
273
274	return -EOPNOTSUPP;
275	}
276
277	static const struct ethtool_ops dsa_slave_ethtool_ops = {
278	.get_settings = dsa_slave_get_settings,
279	.set_settings = dsa_slave_set_settings,
280	.get_drvinfo = dsa_slave_get_drvinfo,
281	.nway_reset = dsa_slave_nway_reset,
282	.get_link = dsa_slave_get_link,
283	.set_sg = ethtool_op_set_sg,
284	.get_strings = dsa_slave_get_strings,
285	.get_ethtool_stats = dsa_slave_get_ethtool_stats,
286	.get_sset_count = dsa_slave_get_sset_count,
287	};
288
289
290	/* slave device setup *******************************************************/
291	struct net_device *
292	dsa_slave_create(struct dsa_switch ds, struct device parent,
293	int port, char *name)
294	{
295	struct net_device *master = ds->master_netdev;
296	struct net_device *slave_dev;
297	struct dsa_slave_priv *p;
298	int ret;
299
300	slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv),
301	name, ether_setup);
302	if (slave_dev == NULL)
303	return slave_dev;
304
305	slave_dev->features = master->vlan_features;
306	SET_ETHTOOL_OPS(slave_dev, &dsa_slave_ethtool_ops);
307	memcpy(slave_dev->dev_addr, master->dev_addr, ETH_ALEN);
308	slave_dev->tx_queue_len = 0;
309	switch (ds->tag_protocol) {
cf85d08f LB	310	#ifdef CONFIG_NET_DSA_TAG_DSA
	311	case htons(ETH_P_DSA):
	312	slave_dev->hard_start_xmit = dsa_xmit;
	313	break;
	314	#endif
91da11f8 LB	315	#ifdef CONFIG_NET_DSA_TAG_EDSA
	316	case htons(ETH_P_EDSA):
	317	slave_dev->hard_start_xmit = edsa_xmit;
	318	break;
396138f0 LB	319	#endif
	320	#ifdef CONFIG_NET_DSA_TAG_TRAILER
	321	case htons(ETH_P_TRAILER):
	322	slave_dev->hard_start_xmit = trailer_xmit;
	323	break;
91da11f8 LB	324	#endif
	325	default:
	326	BUG();
	327	}
	328	slave_dev->open = dsa_slave_open;
	329	slave_dev->stop = dsa_slave_close;
	330	slave_dev->change_rx_flags = dsa_slave_change_rx_flags;
	331	slave_dev->set_rx_mode = dsa_slave_set_rx_mode;
	332	slave_dev->set_multicast_list = dsa_slave_set_rx_mode;
	333	slave_dev->set_mac_address = dsa_slave_set_mac_address;
	334	slave_dev->do_ioctl = dsa_slave_ioctl;
	335	SET_NETDEV_DEV(slave_dev, parent);
	336	slave_dev->vlan_features = master->vlan_features;
	337
	338	p = netdev_priv(slave_dev);
	339	p->dev = slave_dev;
	340	p->parent = ds;
	341	p->port = port;
	342	p->phy = ds->slave_mii_bus->phy_map[port];
	343
	344	ret = register_netdev(slave_dev);
	345	if (ret) {
	346	printk(KERN_ERR "%s: error %d registering interface %s\n",
	347	master->name, ret, slave_dev->name);
	348	free_netdev(slave_dev);
	349	return NULL;
	350	}
	351
	352	netif_carrier_off(slave_dev);
	353
	354	if (p->phy != NULL) {
	355	phy_attach(slave_dev, p->phy->dev.bus_id,
	356	0, PHY_INTERFACE_MODE_GMII);
	357
	358	p->phy->autoneg = AUTONEG_ENABLE;
	359	p->phy->speed = 0;
	360	p->phy->duplex = 0;
	361	p->phy->advertising = p->phy->supported \| ADVERTISED_Autoneg;
	362	phy_start_aneg(p->phy);
	363	}
	364
	365	return slave_dev;
	366	}