src/drivers/driver_roboswitch.c - platform/external/wpa_supplicant_8 - Git at Google

 /*
  * WPA Supplicant - roboswitch driver interface
  * Copyright (c) 2008-2009 Jouke Witteveen
  *
  * This software may be distributed under the terms of the BSD license.
  * See README for more details.
  */

 #include "includes.h"
 #include <sys/ioctl.h>
 #include <linux/sockios.h>
 #include <linux/if_ether.h>
 #include <linux/mii.h>
 #include <net/if.h>

 #include "common.h"
 #include "driver.h"
 #include "l2_packet/l2_packet.h"

 #define ROBO_PHY_ADDR		0x1e	/* RoboSwitch PHY address */

 /* MII access registers */
 #define ROBO_MII_PAGE		0x10	/* MII page register */
 #define ROBO_MII_ADDR		0x11	/* MII address register */
 #define ROBO_MII_DATA_OFFSET	0x18	/* Start of MII data registers */

 #define ROBO_MII_PAGE_ENABLE	0x01	/* MII page op code */
 #define ROBO_MII_ADDR_WRITE	0x01	/* MII address write op code */
 #define ROBO_MII_ADDR_READ	0x02	/* MII address read op code */
 #define ROBO_MII_DATA_MAX	   4	/* Consecutive MII data registers */
 #define ROBO_MII_RETRY_MAX	  10	/* Read attempts before giving up */

 /* Page numbers */
 #define ROBO_ARLCTRL_PAGE	0x04	/* ARL control page */
 #define ROBO_VLAN_PAGE		0x34	/* VLAN page */

 /* ARL control page registers */
 #define ROBO_ARLCTRL_CONF	0x00	/* ARL configuration register */
 #define ROBO_ARLCTRL_ADDR_1	0x10	/* Multiport address 1 */
 #define ROBO_ARLCTRL_VEC_1	0x16	/* Multiport vector 1 */
 #define ROBO_ARLCTRL_ADDR_2	0x20	/* Multiport address 2 */
 #define ROBO_ARLCTRL_VEC_2	0x26	/* Multiport vector 2 */

 /* VLAN page registers */
 #define ROBO_VLAN_ACCESS	0x08	/* VLAN table access register */
 #define ROBO_VLAN_ACCESS_5350	0x06	/* VLAN table access register (5350) */
 #define ROBO_VLAN_READ		0x0c	/* VLAN read register */
 #define ROBO_VLAN_MAX		0xff	/* Maximum number of VLANs */


 static const u8 pae_group_addr[ETH_ALEN] =
 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03 };


 struct wpa_driver_roboswitch_data {
 	void *ctx;
 	struct l2_packet_data *l2;
 	char ifname[IFNAMSIZ + 1];
 	u8 own_addr[ETH_ALEN];
 	struct ifreq ifr;
 	int fd, is_5350;
 	u16 ports;
 };


 /* Copied from the kernel-only part of mii.h. */
 static inline struct mii_ioctl_data *if_mii(struct ifreq *rq)
 {
 	return (struct mii_ioctl_data *) &rq->ifr_ifru;
 }


 /*
  * RoboSwitch uses 16-bit Big Endian addresses.
  * The ordering of the words is reversed in the MII registers.
  */
 static void wpa_driver_roboswitch_addr_be16(const u8 addr[ETH_ALEN], u16 *be)
 {
 	int i;
 	for (i = 0; i < ETH_ALEN; i += 2)
 		be[(ETH_ALEN - i) / 2 - 1] = WPA_GET_BE16(addr + i);
 }


 static u16 wpa_driver_roboswitch_mdio_read(
 	struct wpa_driver_roboswitch_data *drv, u8 reg)
 {
 	struct mii_ioctl_data *mii = if_mii(&drv->ifr);

 	mii->phy_id = ROBO_PHY_ADDR;
 	mii->reg_num = reg;

 	if (ioctl(drv->fd, SIOCGMIIREG, &drv->ifr) < 0) {
 		perror("ioctl[SIOCGMIIREG]");
 		return 0x00;
 	}
 	return mii->val_out;
 }


 static void wpa_driver_roboswitch_mdio_write(
 	struct wpa_driver_roboswitch_data *drv, u8 reg, u16 val)
 {
 	struct mii_ioctl_data *mii = if_mii(&drv->ifr);

 	mii->phy_id = ROBO_PHY_ADDR;
 	mii->reg_num = reg;
 	mii->val_in = val;

 	if (ioctl(drv->fd, SIOCSMIIREG, &drv->ifr) < 0) {
 		perror("ioctl[SIOCSMIIREG");
 	}
 }


 static int wpa_driver_roboswitch_reg(struct wpa_driver_roboswitch_data *drv,
 				     u8 page, u8 reg, u8 op)
 {
 	int i;

 	/* set page number */
 	wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_PAGE,
 					 (page << 8) | ROBO_MII_PAGE_ENABLE);
 	/* set register address */
 	wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_ADDR, (reg << 8) | op);

 	/* check if operation completed */
 	for (i = 0; i < ROBO_MII_RETRY_MAX; ++i) {
 		if ((wpa_driver_roboswitch_mdio_read(drv, ROBO_MII_ADDR) & 3)
 		    == 0)
 			return 0;
 	}
 	/* timeout */
 	return -1;
 }


 static int wpa_driver_roboswitch_read(struct wpa_driver_roboswitch_data *drv,
 				      u8 page, u8 reg, u16 *val, int len)
 {
 	int i;

 	if (len > ROBO_MII_DATA_MAX ||
 	    wpa_driver_roboswitch_reg(drv, page, reg, ROBO_MII_ADDR_READ) < 0)
 		return -1;

 	for (i = 0; i < len; ++i) {
 		val[i] = wpa_driver_roboswitch_mdio_read(
 			drv, ROBO_MII_DATA_OFFSET + i);
 	}

 	return 0;
 }


 static int wpa_driver_roboswitch_write(struct wpa_driver_roboswitch_data *drv,
 				       u8 page, u8 reg, u16 *val, int len)
 {
 	int i;

 	if (len > ROBO_MII_DATA_MAX) return -1;
 	for (i = 0; i < len; ++i) {
 		wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_DATA_OFFSET + i,
 						 val[i]);
 	}
 	return wpa_driver_roboswitch_reg(drv, page, reg, ROBO_MII_ADDR_WRITE);
 }


 static void wpa_driver_roboswitch_receive(void *priv, const u8 *src_addr,
 					  const u8 *buf, size_t len)
 {
 	struct wpa_driver_roboswitch_data *drv = priv;

 	if (len > 14 && WPA_GET_BE16(buf + 12) == ETH_P_EAPOL &&
 	    os_memcmp(buf, drv->own_addr, ETH_ALEN) == 0)
 		drv_event_eapol_rx(drv->ctx, src_addr, buf + 14, len - 14);
 }


 static int wpa_driver_roboswitch_get_ssid(void *priv, u8 *ssid)
 {
 	ssid[0] = 0;
 	return 0;
 }


 static int wpa_driver_roboswitch_get_bssid(void *priv, u8 *bssid)
 {
 	/* Report PAE group address as the "BSSID" for wired connection. */
 	os_memcpy(bssid, pae_group_addr, ETH_ALEN);
 	return 0;
 }


 static int wpa_driver_roboswitch_get_capa(void *priv,
 					  struct wpa_driver_capa *capa)
 {
 	os_memset(capa, 0, sizeof(*capa));
 	capa->flags = WPA_DRIVER_FLAGS_WIRED;
 	return 0;
 }


 static int wpa_driver_roboswitch_set_param(void *priv, const char *param)
 {
 	struct wpa_driver_roboswitch_data *drv = priv;
 	char *sep;

 	if (param == NULL || os_strstr(param, "multicast_only=1") == NULL) {
 		sep = drv->ifname + os_strlen(drv->ifname);
 		*sep = '.';
 		drv->l2 = l2_packet_init(drv->ifname, NULL, ETH_P_ALL,
 					 wpa_driver_roboswitch_receive, drv,
 					 1);
 		if (drv->l2 == NULL) {
 			wpa_printf(MSG_INFO, "%s: Unable to listen on %s",
 				   __func__, drv->ifname);
 			return -1;
 		}
 		*sep = '\0';
 		l2_packet_get_own_addr(drv->l2, drv->own_addr);
 	} else {
 		wpa_printf(MSG_DEBUG, "%s: Ignoring unicast frames", __func__);
 		drv->l2 = NULL;
 	}
 	return 0;
 }


 static const char * wpa_driver_roboswitch_get_ifname(void *priv)
 {
 	struct wpa_driver_roboswitch_data *drv = priv;
 	return drv->ifname;
 }


 static int wpa_driver_roboswitch_join(struct wpa_driver_roboswitch_data *drv,
 				      u16 ports, const u8 *addr)
 {
 	u16 read1[3], read2[3], addr_be16[3];

 	wpa_driver_roboswitch_addr_be16(addr, addr_be16);

 	if (wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 				       ROBO_ARLCTRL_CONF, read1, 1) < 0)
 		return -1;
 	if (!(read1[0] & (1 << 4))) {
 		/* multiport addresses are not yet enabled */
 		read1[0] |= 1 << 4;
 		wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 					    ROBO_ARLCTRL_ADDR_1, addr_be16, 3);
 		wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 					    ROBO_ARLCTRL_VEC_1, &ports, 1);
 		wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 					    ROBO_ARLCTRL_ADDR_2, addr_be16, 3);
 		wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 					    ROBO_ARLCTRL_VEC_2, &ports, 1);
 		wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 					    ROBO_ARLCTRL_CONF, read1, 1);
 	} else {
 		/* if both multiport addresses are the same we can add */
 		wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 					   ROBO_ARLCTRL_ADDR_1, read1, 3);
 		wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 					   ROBO_ARLCTRL_ADDR_2, read2, 3);
 		if (os_memcmp(read1, read2, 6) != 0)
 			return -1;
 		wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 					   ROBO_ARLCTRL_VEC_1, read1, 1);
 		wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 					   ROBO_ARLCTRL_VEC_2, read2, 1);
 		if (read1[0] != read2[0])
 			return -1;
 		wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 					    ROBO_ARLCTRL_ADDR_1, addr_be16, 3);
 		wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 					    ROBO_ARLCTRL_VEC_1, &ports, 1);
 	}
 	return 0;
 }


 static int wpa_driver_roboswitch_leave(struct wpa_driver_roboswitch_data *drv,
 				       u16 ports, const u8 *addr)
 {
 	u16 _read, addr_be16[3], addr_read[3], ports_read;

 	wpa_driver_roboswitch_addr_be16(addr, addr_be16);

 	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE, ROBO_ARLCTRL_CONF,
 				   &_read, 1);
 	/* If ARL control is disabled, there is nothing to leave. */
 	if (!(_read & (1 << 4))) return -1;

 	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 				   ROBO_ARLCTRL_ADDR_1, addr_read, 3);
 	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE, ROBO_ARLCTRL_VEC_1,
 				   &ports_read, 1);
 	/* check if we occupy multiport address 1 */
 	if (os_memcmp(addr_read, addr_be16, 6) == 0 && ports_read == ports) {
 		wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 					   ROBO_ARLCTRL_ADDR_2, addr_read, 3);
 		wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 					   ROBO_ARLCTRL_VEC_2, &ports_read, 1);
 		/* and multiport address 2 */
 		if (os_memcmp(addr_read, addr_be16, 6) == 0 &&
 		    ports_read == ports) {
 			_read &= ~(1 << 4);
 			wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 						    ROBO_ARLCTRL_CONF, &_read,
 						    1);
 		} else {
 			wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 						   ROBO_ARLCTRL_ADDR_1,
 						   addr_read, 3);
 			wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 						   ROBO_ARLCTRL_VEC_1,
 						   &ports_read, 1);
 			wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 						    ROBO_ARLCTRL_ADDR_2,
 						    addr_read, 3);
 			wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 						    ROBO_ARLCTRL_VEC_2,
 						    &ports_read, 1);
 		}
 	} else {
 		wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 					   ROBO_ARLCTRL_ADDR_2, addr_read, 3);
 		wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
 					   ROBO_ARLCTRL_VEC_2, &ports_read, 1);
 		/* or multiport address 2 */
 		if (os_memcmp(addr_read, addr_be16, 6) == 0 &&
 		    ports_read == ports) {
 			wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 						    ROBO_ARLCTRL_ADDR_1,
 						    addr_read, 3);
 			wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
 						    ROBO_ARLCTRL_VEC_1,
 						    &ports_read, 1);
 		} else return -1;
 	}
 	return 0;
 }


 static void * wpa_driver_roboswitch_init(void *ctx, const char *ifname)
 {
 	struct wpa_driver_roboswitch_data *drv;
 	char *sep;
 	u16 vlan = 0, _read[2];

 	drv = os_zalloc(sizeof(*drv));
 	if (drv == NULL) return NULL;
 	drv->ctx = ctx;
 	drv->own_addr[0] = '\0';

 	/* copy ifname and take a pointer to the second to last character */
 	sep = drv->ifname +
 	      os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname)) - 2;
 	/* find the '.' separating <interface> and <vlan> */
 	while (sep > drv->ifname && *sep != '.') sep--;
 	if (sep <= drv->ifname) {
 		wpa_printf(MSG_INFO, "%s: No <interface>.<vlan> pair in "
 			   "interface name %s", __func__, drv->ifname);
 		os_free(drv);
 		return NULL;
 	}
 	*sep = '\0';
 	while (*++sep) {
 		if (*sep < '0' || *sep > '9') {
 			wpa_printf(MSG_INFO, "%s: Invalid vlan specification "
 				   "in interface name %s", __func__, ifname);
 			os_free(drv);
 			return NULL;
 		}
 		vlan *= 10;
 		vlan += *sep - '0';
 		if (vlan > ROBO_VLAN_MAX) {
 			wpa_printf(MSG_INFO, "%s: VLAN out of range in "
 				   "interface name %s", __func__, ifname);
 			os_free(drv);
 			return NULL;
 		}
 	}

 	drv->fd = socket(PF_INET, SOCK_DGRAM, 0);
 	if (drv->fd < 0) {
 		wpa_printf(MSG_INFO, "%s: Unable to create socket", __func__);
 		os_free(drv);
 		return NULL;
 	}

 	os_memset(&drv->ifr, 0, sizeof(drv->ifr));
 	os_strlcpy(drv->ifr.ifr_name, drv->ifname, IFNAMSIZ);
 	if (ioctl(drv->fd, SIOCGMIIPHY, &drv->ifr) < 0) {
 		perror("ioctl[SIOCGMIIPHY]");
 		os_free(drv);
 		return NULL;
 	}
 	if (if_mii(&drv->ifr)->phy_id != ROBO_PHY_ADDR) {
 		wpa_printf(MSG_INFO, "%s: Invalid phy address (not a "
 			   "RoboSwitch?)", __func__);
 		os_free(drv);
 		return NULL;
 	}

 	/* set and read back to see if the register can be used */
 	_read[0] = ROBO_VLAN_MAX;
 	wpa_driver_roboswitch_write(drv, ROBO_VLAN_PAGE, ROBO_VLAN_ACCESS_5350,
 				    _read, 1);
 	wpa_driver_roboswitch_read(drv, ROBO_VLAN_PAGE, ROBO_VLAN_ACCESS_5350,
 				   _read + 1, 1);
 	drv->is_5350 = _read[0] == _read[1];

 	/* set the read bit */
 	vlan |= 1 << 13;
 	wpa_driver_roboswitch_write(drv, ROBO_VLAN_PAGE,
 				    drv->is_5350 ? ROBO_VLAN_ACCESS_5350
 						 : ROBO_VLAN_ACCESS,
 				    &vlan, 1);
 	wpa_driver_roboswitch_read(drv, ROBO_VLAN_PAGE, ROBO_VLAN_READ, _read,
 				   drv->is_5350 ? 2 : 1);
 	if (!(drv->is_5350 ? _read[1] & (1 << 4) : _read[0] & (1 << 14))) {
 		wpa_printf(MSG_INFO, "%s: Could not get port information for "
 				     "VLAN %d", __func__, vlan & ~(1 << 13));
 		os_free(drv);
 		return NULL;
 	}
 	drv->ports = _read[0] & 0x001F;
 	/* add the MII port */
 	drv->ports |= 1 << 8;
 	if (wpa_driver_roboswitch_join(drv, drv->ports, pae_group_addr) < 0) {
 		wpa_printf(MSG_INFO, "%s: Unable to join PAE group", __func__);
 		os_free(drv);
 		return NULL;
 	} else {
 		wpa_printf(MSG_DEBUG, "%s: Added PAE group address to "
 			   "RoboSwitch ARL", __func__);
 	}

 	return drv;
 }


 static void wpa_driver_roboswitch_deinit(void *priv)
 {
 	struct wpa_driver_roboswitch_data *drv = priv;

 	if (drv->l2) {
 		l2_packet_deinit(drv->l2);
 		drv->l2 = NULL;
 	}
 	if (wpa_driver_roboswitch_leave(drv, drv->ports, pae_group_addr) < 0) {
 		wpa_printf(MSG_DEBUG, "%s: Unable to leave PAE group",
 			   __func__);
 	}

 	close(drv->fd);
 	os_free(drv);
 }


 const struct wpa_driver_ops wpa_driver_roboswitch_ops = {
 	.name = "roboswitch",
 	.desc = "wpa_supplicant roboswitch driver",
 	.get_ssid = wpa_driver_roboswitch_get_ssid,
 	.get_bssid = wpa_driver_roboswitch_get_bssid,
 	.get_capa = wpa_driver_roboswitch_get_capa,
 	.init = wpa_driver_roboswitch_init,
 	.deinit = wpa_driver_roboswitch_deinit,
 	.set_param = wpa_driver_roboswitch_set_param,
 	.get_ifname = wpa_driver_roboswitch_get_ifname,
 };
	/*
	* WPA Supplicant - roboswitch driver interface
	* Copyright (c) 2008-2009 Jouke Witteveen
	*
	* This software may be distributed under the terms of the BSD license.
	* See README for more details.
	*/

	#include "includes.h"
	#include <sys/ioctl.h>
	#include <linux/sockios.h>
	#include <linux/if_ether.h>
	#include <linux/mii.h>
	#include <net/if.h>

	#include "common.h"
	#include "driver.h"
	#include "l2_packet/l2_packet.h"

	#define ROBO_PHY_ADDR 0x1e /* RoboSwitch PHY address */

	/* MII access registers */
	#define ROBO_MII_PAGE 0x10 /* MII page register */
	#define ROBO_MII_ADDR 0x11 /* MII address register */
	#define ROBO_MII_DATA_OFFSET 0x18 /* Start of MII data registers */

	#define ROBO_MII_PAGE_ENABLE 0x01 /* MII page op code */
	#define ROBO_MII_ADDR_WRITE 0x01 /* MII address write op code */
	#define ROBO_MII_ADDR_READ 0x02 /* MII address read op code */
	#define ROBO_MII_DATA_MAX 4 /* Consecutive MII data registers */
	#define ROBO_MII_RETRY_MAX 10 /* Read attempts before giving up */

	/* Page numbers */
	#define ROBO_ARLCTRL_PAGE 0x04 /* ARL control page */
	#define ROBO_VLAN_PAGE 0x34 /* VLAN page */

	/* ARL control page registers */
	#define ROBO_ARLCTRL_CONF 0x00 /* ARL configuration register */
	#define ROBO_ARLCTRL_ADDR_1 0x10 /* Multiport address 1 */
	#define ROBO_ARLCTRL_VEC_1 0x16 /* Multiport vector 1 */
	#define ROBO_ARLCTRL_ADDR_2 0x20 /* Multiport address 2 */
	#define ROBO_ARLCTRL_VEC_2 0x26 /* Multiport vector 2 */

	/* VLAN page registers */
	#define ROBO_VLAN_ACCESS 0x08 /* VLAN table access register */
	#define ROBO_VLAN_ACCESS_5350 0x06 /* VLAN table access register (5350) */
	#define ROBO_VLAN_READ 0x0c /* VLAN read register */
	#define ROBO_VLAN_MAX 0xff /* Maximum number of VLANs */


	static const u8 pae_group_addr[ETH_ALEN] =
	{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03 };


	struct wpa_driver_roboswitch_data {
	void *ctx;
	struct l2_packet_data *l2;
	char ifname[IFNAMSIZ + 1];
	u8 own_addr[ETH_ALEN];
	struct ifreq ifr;
	int fd, is_5350;
	u16 ports;
	};


	/* Copied from the kernel-only part of mii.h. */
	static inline struct mii_ioctl_data if_mii(struct ifreq rq)
	{
	return (struct mii_ioctl_data *) &rq->ifr_ifru;
	}


	/*
	* RoboSwitch uses 16-bit Big Endian addresses.
	* The ordering of the words is reversed in the MII registers.
	*/
	static void wpa_driver_roboswitch_addr_be16(const u8 addr[ETH_ALEN], u16 *be)
	{
	int i;
	for (i = 0; i < ETH_ALEN; i += 2)
	be[(ETH_ALEN - i) / 2 - 1] = WPA_GET_BE16(addr + i);
	}


	static u16 wpa_driver_roboswitch_mdio_read(
	struct wpa_driver_roboswitch_data *drv, u8 reg)
	{
	struct mii_ioctl_data *mii = if_mii(&drv->ifr);

	mii->phy_id = ROBO_PHY_ADDR;
	mii->reg_num = reg;

	if (ioctl(drv->fd, SIOCGMIIREG, &drv->ifr) < 0) {
	perror("ioctl[SIOCGMIIREG]");
	return 0x00;
	}
	return mii->val_out;
	}


	static void wpa_driver_roboswitch_mdio_write(
	struct wpa_driver_roboswitch_data *drv, u8 reg, u16 val)
	{
	struct mii_ioctl_data *mii = if_mii(&drv->ifr);

	mii->phy_id = ROBO_PHY_ADDR;
	mii->reg_num = reg;
	mii->val_in = val;

	if (ioctl(drv->fd, SIOCSMIIREG, &drv->ifr) < 0) {
	perror("ioctl[SIOCSMIIREG");
	}
	}


	static int wpa_driver_roboswitch_reg(struct wpa_driver_roboswitch_data *drv,
	u8 page, u8 reg, u8 op)
	{
	int i;

	/* set page number */
	wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_PAGE,
	(page << 8) \| ROBO_MII_PAGE_ENABLE);
	/* set register address */
	wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_ADDR, (reg << 8) \| op);

	/* check if operation completed */
	for (i = 0; i < ROBO_MII_RETRY_MAX; ++i) {
	if ((wpa_driver_roboswitch_mdio_read(drv, ROBO_MII_ADDR) & 3)
	== 0)
	return 0;
	}
	/* timeout */
	return -1;
	}


	static int wpa_driver_roboswitch_read(struct wpa_driver_roboswitch_data *drv,
	u8 page, u8 reg, u16 *val, int len)
	{
	int i;

	if (len > ROBO_MII_DATA_MAX \|\|
	wpa_driver_roboswitch_reg(drv, page, reg, ROBO_MII_ADDR_READ) < 0)
	return -1;

	for (i = 0; i < len; ++i) {
	val[i] = wpa_driver_roboswitch_mdio_read(
	drv, ROBO_MII_DATA_OFFSET + i);
	}

	return 0;
	}


	static int wpa_driver_roboswitch_write(struct wpa_driver_roboswitch_data *drv,
	u8 page, u8 reg, u16 *val, int len)
	{
	int i;

	if (len > ROBO_MII_DATA_MAX) return -1;
	for (i = 0; i < len; ++i) {
	wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_DATA_OFFSET + i,
	val[i]);
	}
	return wpa_driver_roboswitch_reg(drv, page, reg, ROBO_MII_ADDR_WRITE);
	}


	static void wpa_driver_roboswitch_receive(void priv, const u8 src_addr,
	const u8 *buf, size_t len)
	{
	struct wpa_driver_roboswitch_data *drv = priv;

	if (len > 14 && WPA_GET_BE16(buf + 12) == ETH_P_EAPOL &&
	os_memcmp(buf, drv->own_addr, ETH_ALEN) == 0)
	drv_event_eapol_rx(drv->ctx, src_addr, buf + 14, len - 14);
	}


	static int wpa_driver_roboswitch_get_ssid(void priv, u8 ssid)
	{
	ssid[0] = 0;
	return 0;
	}


	static int wpa_driver_roboswitch_get_bssid(void priv, u8 bssid)
	{
	/* Report PAE group address as the "BSSID" for wired connection. */
	os_memcpy(bssid, pae_group_addr, ETH_ALEN);
	return 0;
	}


	static int wpa_driver_roboswitch_get_capa(void *priv,
	struct wpa_driver_capa *capa)
	{
	os_memset(capa, 0, sizeof(*capa));
	capa->flags = WPA_DRIVER_FLAGS_WIRED;
	return 0;
	}


	static int wpa_driver_roboswitch_set_param(void priv, const char param)
	{
	struct wpa_driver_roboswitch_data *drv = priv;
	char *sep;

	if (param == NULL \|\| os_strstr(param, "multicast_only=1") == NULL) {
	sep = drv->ifname + os_strlen(drv->ifname);
	*sep = '.';
	drv->l2 = l2_packet_init(drv->ifname, NULL, ETH_P_ALL,
	wpa_driver_roboswitch_receive, drv,
	1);
	if (drv->l2 == NULL) {
	wpa_printf(MSG_INFO, "%s: Unable to listen on %s",
	__func__, drv->ifname);
	return -1;
	}
	*sep = '\0';
	l2_packet_get_own_addr(drv->l2, drv->own_addr);
	} else {
	wpa_printf(MSG_DEBUG, "%s: Ignoring unicast frames", __func__);
	drv->l2 = NULL;
	}
	return 0;
	}


	static const char * wpa_driver_roboswitch_get_ifname(void *priv)
	{
	struct wpa_driver_roboswitch_data *drv = priv;
	return drv->ifname;
	}


	static int wpa_driver_roboswitch_join(struct wpa_driver_roboswitch_data *drv,
	u16 ports, const u8 *addr)
	{
	u16 read1[3], read2[3], addr_be16[3];

	wpa_driver_roboswitch_addr_be16(addr, addr_be16);

	if (wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_CONF, read1, 1) < 0)
	return -1;
	if (!(read1[0] & (1 << 4))) {
	/* multiport addresses are not yet enabled */
	read1[0] \|= 1 << 4;
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_1, addr_be16, 3);
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_VEC_1, &ports, 1);
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_2, addr_be16, 3);
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_VEC_2, &ports, 1);
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_CONF, read1, 1);
	} else {
	/* if both multiport addresses are the same we can add */
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_1, read1, 3);
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_2, read2, 3);
	if (os_memcmp(read1, read2, 6) != 0)
	return -1;
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_VEC_1, read1, 1);
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_VEC_2, read2, 1);
	if (read1[0] != read2[0])
	return -1;
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_1, addr_be16, 3);
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_VEC_1, &ports, 1);
	}
	return 0;
	}


	static int wpa_driver_roboswitch_leave(struct wpa_driver_roboswitch_data *drv,
	u16 ports, const u8 *addr)
	{
	u16 _read, addr_be16[3], addr_read[3], ports_read;

	wpa_driver_roboswitch_addr_be16(addr, addr_be16);

	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE, ROBO_ARLCTRL_CONF,
	&_read, 1);
	/* If ARL control is disabled, there is nothing to leave. */
	if (!(_read & (1 << 4))) return -1;

	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_1, addr_read, 3);
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE, ROBO_ARLCTRL_VEC_1,
	&ports_read, 1);
	/* check if we occupy multiport address 1 */
	if (os_memcmp(addr_read, addr_be16, 6) == 0 && ports_read == ports) {
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_2, addr_read, 3);
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_VEC_2, &ports_read, 1);
	/* and multiport address 2 */
	if (os_memcmp(addr_read, addr_be16, 6) == 0 &&
	ports_read == ports) {
	_read &= ~(1 << 4);
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_CONF, &_read,
	1);
	} else {
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_1,
	addr_read, 3);
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_VEC_1,
	&ports_read, 1);
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_2,
	addr_read, 3);
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_VEC_2,
	&ports_read, 1);
	}
	} else {
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_2, addr_read, 3);
	wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_VEC_2, &ports_read, 1);
	/* or multiport address 2 */
	if (os_memcmp(addr_read, addr_be16, 6) == 0 &&
	ports_read == ports) {
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_ADDR_1,
	addr_read, 3);
	wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
	ROBO_ARLCTRL_VEC_1,
	&ports_read, 1);
	} else return -1;
	}
	return 0;
	}


	static void * wpa_driver_roboswitch_init(void ctx, const char ifname)
	{
	struct wpa_driver_roboswitch_data *drv;
	char *sep;
	u16 vlan = 0, _read[2];

	drv = os_zalloc(sizeof(*drv));
	if (drv == NULL) return NULL;
	drv->ctx = ctx;
	drv->own_addr[0] = '\0';

	/* copy ifname and take a pointer to the second to last character */
	sep = drv->ifname +
	os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname)) - 2;
	/* find the '.' separating <interface> and <vlan> */
	while (sep > drv->ifname && *sep != '.') sep--;
	if (sep <= drv->ifname) {
	wpa_printf(MSG_INFO, "%s: No <interface>.<vlan> pair in "
	"interface name %s", __func__, drv->ifname);
	os_free(drv);
	return NULL;
	}
	*sep = '\0';
	while (*++sep) {
	if (sep < '0' \|\| sep > '9') {
	wpa_printf(MSG_INFO, "%s: Invalid vlan specification "
	"in interface name %s", __func__, ifname);
	os_free(drv);
	return NULL;
	}
	vlan *= 10;
	vlan += *sep - '0';
	if (vlan > ROBO_VLAN_MAX) {
	wpa_printf(MSG_INFO, "%s: VLAN out of range in "
	"interface name %s", __func__, ifname);
	os_free(drv);
	return NULL;
	}
	}

	drv->fd = socket(PF_INET, SOCK_DGRAM, 0);
	if (drv->fd < 0) {
	wpa_printf(MSG_INFO, "%s: Unable to create socket", __func__);
	os_free(drv);
	return NULL;
	}

	os_memset(&drv->ifr, 0, sizeof(drv->ifr));
	os_strlcpy(drv->ifr.ifr_name, drv->ifname, IFNAMSIZ);
	if (ioctl(drv->fd, SIOCGMIIPHY, &drv->ifr) < 0) {
	perror("ioctl[SIOCGMIIPHY]");
	os_free(drv);
	return NULL;
	}
	if (if_mii(&drv->ifr)->phy_id != ROBO_PHY_ADDR) {
	wpa_printf(MSG_INFO, "%s: Invalid phy address (not a "
	"RoboSwitch?)", __func__);
	os_free(drv);
	return NULL;
	}

	/* set and read back to see if the register can be used */
	_read[0] = ROBO_VLAN_MAX;
	wpa_driver_roboswitch_write(drv, ROBO_VLAN_PAGE, ROBO_VLAN_ACCESS_5350,
	_read, 1);
	wpa_driver_roboswitch_read(drv, ROBO_VLAN_PAGE, ROBO_VLAN_ACCESS_5350,
	_read + 1, 1);
	drv->is_5350 = _read[0] == _read[1];

	/* set the read bit */
	vlan \|= 1 << 13;
	wpa_driver_roboswitch_write(drv, ROBO_VLAN_PAGE,
	drv->is_5350 ? ROBO_VLAN_ACCESS_5350
	: ROBO_VLAN_ACCESS,
	&vlan, 1);
	wpa_driver_roboswitch_read(drv, ROBO_VLAN_PAGE, ROBO_VLAN_READ, _read,
	drv->is_5350 ? 2 : 1);
	if (!(drv->is_5350 ? _read[1] & (1 << 4) : _read[0] & (1 << 14))) {
	wpa_printf(MSG_INFO, "%s: Could not get port information for "
	"VLAN %d", __func__, vlan & ~(1 << 13));
	os_free(drv);
	return NULL;
	}
	drv->ports = _read[0] & 0x001F;
	/* add the MII port */
	drv->ports \|= 1 << 8;
	if (wpa_driver_roboswitch_join(drv, drv->ports, pae_group_addr) < 0) {
	wpa_printf(MSG_INFO, "%s: Unable to join PAE group", __func__);
	os_free(drv);
	return NULL;
	} else {
	wpa_printf(MSG_DEBUG, "%s: Added PAE group address to "
	"RoboSwitch ARL", __func__);
	}

	return drv;
	}


	static void wpa_driver_roboswitch_deinit(void *priv)
	{
	struct wpa_driver_roboswitch_data *drv = priv;

	if (drv->l2) {
	l2_packet_deinit(drv->l2);
	drv->l2 = NULL;
	}
	if (wpa_driver_roboswitch_leave(drv, drv->ports, pae_group_addr) < 0) {
	wpa_printf(MSG_DEBUG, "%s: Unable to leave PAE group",
	__func__);
	}

	close(drv->fd);
	os_free(drv);
	}


	const struct wpa_driver_ops wpa_driver_roboswitch_ops = {
	.name = "roboswitch",
	.desc = "wpa_supplicant roboswitch driver",
	.get_ssid = wpa_driver_roboswitch_get_ssid,
	.get_bssid = wpa_driver_roboswitch_get_bssid,
	.get_capa = wpa_driver_roboswitch_get_capa,
	.init = wpa_driver_roboswitch_init,
	.deinit = wpa_driver_roboswitch_deinit,
	.set_param = wpa_driver_roboswitch_set_param,
	.get_ifname = wpa_driver_roboswitch_get_ifname,
	};