2 * WPA Supplicant - roboswitch driver interface
3 * Copyright (c) 2008 Jouke Witteveen
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
16 #include <sys/ioctl.h>
18 #include <linux/sockios.h>
19 #include <linux/mii.h>
24 #define ROBO_PHY_ADDR 0x1E /* RoboSwitch PHY address */
26 /* MII access registers */
27 #define ROBO_MII_PAGE 0x10 /* MII page register */
28 #define ROBO_MII_ADDR 0x11 /* MII address register */
29 #define ROBO_MII_DATA_OFFSET 0x18 /* Start of MII data registers */
31 #define ROBO_MII_PAGE_ENABLE 0x01 /* MII page op code */
32 #define ROBO_MII_ADDR_WRITE 0x01 /* MII address write op code */
33 #define ROBO_MII_ADDR_READ 0x02 /* MII address read op code */
34 #define ROBO_MII_DATA_MAX 4 /* Consecutive MII data registers */
35 #define ROBO_MII_RETRY_MAX 10 /* Read attempts before giving up */
38 #define ROBO_ARLCTRL_PAGE 0x04 /* ARL control page */
39 #define ROBO_VLAN_PAGE 0x34 /* VLAN page */
41 /* ARL control page registers */
42 #define ROBO_ARLCTRL_CONF 0x00 /* ARL configuration register */
43 #define ROBO_ARLCTRL_ADDR_1 0x10 /* Multiport address 1 */
44 #define ROBO_ARLCTRL_VEC_1 0x16 /* Multiport vector 1 */
45 #define ROBO_ARLCTRL_ADDR_2 0x20 /* Multiport address 2 */
46 #define ROBO_ARLCTRL_VEC_2 0x26 /* Multiport vector 2 */
48 /* VLAN page registers */
49 #define ROBO_VLAN_ACCESS 0x06 /* VLAN table Access register */
50 #define ROBO_VLAN_READ 0x0C /* VLAN read register */
53 static const u8 pae_group_addr[ETH_ALEN] =
54 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03 };
57 struct wpa_driver_roboswitch_data {
59 char ifname[IFNAMSIZ + 1];
66 /* Copied from the kernel-only part of mii.h. */
67 static inline struct mii_ioctl_data *if_mii(struct ifreq *rq)
69 return (struct mii_ioctl_data *) &rq->ifr_ifru;
73 static u16 wpa_driver_roboswitch_mdio_read(
74 struct wpa_driver_roboswitch_data *drv, u8 reg)
76 struct mii_ioctl_data *mii = if_mii(&drv->ifr);
78 mii->phy_id = ROBO_PHY_ADDR;
81 if (ioctl(drv->fd, SIOCGMIIREG, &drv->ifr) < 0) {
82 perror("ioctl[SIOCGMIIREG]");
89 static void wpa_driver_roboswitch_mdio_write(
90 struct wpa_driver_roboswitch_data *drv, u8 reg, u16 val)
92 struct mii_ioctl_data *mii = if_mii(&drv->ifr);
94 mii->phy_id = ROBO_PHY_ADDR;
98 if (ioctl(drv->fd, SIOCSMIIREG, &drv->ifr) < 0) {
99 perror("ioctl[SIOCSMIIREG");
104 static int wpa_driver_roboswitch_reg(struct wpa_driver_roboswitch_data *drv,
105 u8 page, u8 reg, u8 op)
109 /* set page number */
110 wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_PAGE,
111 (page << 8) | ROBO_MII_PAGE_ENABLE);
112 /* set register address */
113 wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_ADDR, (reg << 8) | op);
115 /* check if operation completed */
116 for (i = 0; i < ROBO_MII_RETRY_MAX; ++i) {
117 if ((wpa_driver_roboswitch_mdio_read(drv, ROBO_MII_ADDR) & 3)
126 static int wpa_driver_roboswitch_read(struct wpa_driver_roboswitch_data *drv,
127 u8 page, u8 reg, u16 *val, int len)
131 if (len > ROBO_MII_DATA_MAX ||
132 wpa_driver_roboswitch_reg(drv, page, reg, ROBO_MII_ADDR_READ) < 0)
135 for (i = 0; i < len; ++i) {
136 val[i] = wpa_driver_roboswitch_mdio_read(
137 drv, ROBO_MII_DATA_OFFSET + i);
144 static int wpa_driver_roboswitch_write(struct wpa_driver_roboswitch_data *drv,
145 u8 page, u8 reg, u16 *val, int len)
149 if (len > ROBO_MII_DATA_MAX) return -1;
150 for (i = 0; i < len; ++i) {
151 wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_DATA_OFFSET + i,
154 return wpa_driver_roboswitch_reg(drv, page, reg, ROBO_MII_ADDR_WRITE);
158 static int wpa_driver_roboswitch_get_ssid(void *priv, u8 *ssid)
165 static int wpa_driver_roboswitch_get_bssid(void *priv, u8 *bssid)
167 /* Report PAE group address as the "BSSID" for wired connection. */
168 os_memcpy(bssid, pae_group_addr, ETH_ALEN);
173 static const char * wpa_driver_roboswitch_get_ifname(void *priv)
175 struct wpa_driver_roboswitch_data *drv = priv;
180 static int wpa_driver_roboswitch_join(struct wpa_driver_roboswitch_data *drv,
185 /* For reasons of simplicity we assume ETH_ALEN is even. */
186 u16 addr_word[ETH_ALEN / 2];
187 /* RoboSwitch uses 16-bit Big Endian addresses. */
188 /* The ordering of the words is reversed in the MII registers. */
189 for (i = 0; i < ETH_ALEN; i += 2)
190 addr_word[(ETH_ALEN - i) / 2 - 1] = WPA_GET_BE16(addr + i);
192 /* check if multiport addresses are not yet enabled */
193 if (wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
194 ROBO_ARLCTRL_CONF, &_read, 1) < 0)
197 if (!(_read & (1 << 4))) {
199 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
200 ROBO_ARLCTRL_ADDR_1, addr_word, 3);
201 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
202 ROBO_ARLCTRL_VEC_1, &drv->ports,
204 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
205 ROBO_ARLCTRL_VEC_2, &zero, 1);
206 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
207 ROBO_ARLCTRL_CONF, &_read, 1);
211 /* check if multiport address 1 is free */
212 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE, ROBO_ARLCTRL_VEC_1,
215 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
216 ROBO_ARLCTRL_ADDR_1, addr_word, 3);
217 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
218 ROBO_ARLCTRL_VEC_1, &drv->ports,
222 /* check if multiport address 2 is free */
223 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE, ROBO_ARLCTRL_VEC_2,
226 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
227 ROBO_ARLCTRL_ADDR_2, addr_word, 3);
228 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
229 ROBO_ARLCTRL_VEC_2, &drv->ports,
234 /* out of free multiport addresses */
239 static int wpa_driver_roboswitch_leave(struct wpa_driver_roboswitch_data *drv,
243 u8 mport[4] = { ROBO_ARLCTRL_VEC_1, ROBO_ARLCTRL_ADDR_1,
244 ROBO_ARLCTRL_VEC_2, ROBO_ARLCTRL_ADDR_2 };
245 u16 _read[3], zero = 0;
246 /* same as at join */
247 u16 addr_word[ETH_ALEN / 2];
249 for (i = 0; i < ETH_ALEN; i += 2)
250 addr_word[(ETH_ALEN - i) / 2 - 1] = WPA_GET_BE16(addr + i);
252 /* find our address/vector pair */
253 for (i = 0; i < 4; i += 2) {
254 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE, mport[i],
256 if (_read[0] == drv->ports) {
257 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
258 mport[i + 1], _read, 3);
259 if (os_memcmp(_read, addr_word, 6) == 0)
263 /* check if we found our address/vector pair and deactivate it */
266 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE, mport[i], &zero,
269 /* leave the multiport registers in a sane state */
270 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE, ROBO_ARLCTRL_VEC_1,
273 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
274 ROBO_ARLCTRL_VEC_2, _read, 1);
276 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
277 ROBO_ARLCTRL_CONF, _read,
279 _read[0] &= ~(1 << 4);
280 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
281 ROBO_ARLCTRL_CONF, _read,
284 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
285 ROBO_ARLCTRL_ADDR_2, _read,
287 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
288 ROBO_ARLCTRL_ADDR_1, _read,
290 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
291 ROBO_ARLCTRL_VEC_2, _read,
293 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
294 ROBO_ARLCTRL_VEC_1, _read,
296 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
297 ROBO_ARLCTRL_VEC_2, &zero,
305 static void * wpa_driver_roboswitch_init(void *ctx, const char *ifname)
307 struct wpa_driver_roboswitch_data *drv;
308 int len = -1, sep = -1;
309 u16 vlan = 0, vlan_read[2];
311 drv = os_zalloc(sizeof(*drv));
312 if (drv == NULL) return NULL;
315 while (ifname[++len]) {
316 if (ifname[len] == '.')
319 if (sep < 0 || sep >= len - 1) {
320 wpa_printf(MSG_INFO, "%s: No <interface>.<vlan> pair in "
321 "interface name %s", __func__, ifname);
325 if (sep > IFNAMSIZ) {
326 wpa_printf(MSG_INFO, "%s: Interface name %s is too long",
331 os_memcpy(drv->ifname, ifname, sep);
332 drv->ifname[sep] = '\0';
333 while (++sep < len) {
334 if (ifname[sep] < '0' || ifname[sep] > '9') {
335 wpa_printf(MSG_INFO, "%s: Invalid vlan specification "
336 "in interface name %s", __func__, ifname);
341 vlan += ifname[sep] - '0';
343 wpa_printf(MSG_INFO, "%s: VLAN out of range in "
344 "interface name %s", __func__, ifname);
350 drv->fd = socket(PF_INET, SOCK_DGRAM, 0);
352 wpa_printf(MSG_INFO, "%s: Unable to create socket", __func__);
357 os_memset(&drv->ifr, 0, sizeof(drv->ifr));
358 os_strlcpy(drv->ifr.ifr_name, drv->ifname, IFNAMSIZ);
359 if (ioctl(drv->fd, SIOCGMIIPHY, &drv->ifr) < 0) {
360 perror("ioctl[SIOCGMIIPHY]");
364 if (if_mii(&drv->ifr)->phy_id != ROBO_PHY_ADDR) {
365 wpa_printf(MSG_INFO, "%s: Invalid phy address (not a "
366 "RoboSwitch?)", __func__);
372 /* The BCM5365 uses a different register and is not accounted for. */
373 wpa_driver_roboswitch_write(drv, ROBO_VLAN_PAGE, ROBO_VLAN_ACCESS,
375 wpa_driver_roboswitch_read(drv, ROBO_VLAN_PAGE, ROBO_VLAN_READ,
377 if (!(vlan_read[1] & (1 << 4))) {
378 wpa_printf(MSG_INFO, "%s: Could not get port information for "
379 "VLAN %d", __func__, vlan & ~(1 << 13));
383 drv->ports = vlan_read[0] & 0x001F;
384 /* add the MII port */
385 drv->ports |= 1 << 8;
386 if (wpa_driver_roboswitch_join(drv, pae_group_addr) < 0) {
387 wpa_printf(MSG_INFO, "%s: Unable to join PAE group", __func__);
391 wpa_printf(MSG_DEBUG, "%s: Added PAE group address to "
392 "RoboSwitch ARL", __func__);
399 static void wpa_driver_roboswitch_deinit(void *priv)
401 struct wpa_driver_roboswitch_data *drv = priv;
403 if (wpa_driver_roboswitch_leave(drv, pae_group_addr) < 0) {
404 wpa_printf(MSG_DEBUG, "%s: Unable to leave PAE group",
413 const struct wpa_driver_ops wpa_driver_roboswitch_ops = {
414 .name = "roboswitch",
415 .desc = "wpa_supplicant roboswitch driver",
416 .get_ssid = wpa_driver_roboswitch_get_ssid,
417 .get_bssid = wpa_driver_roboswitch_get_bssid,
418 .init = wpa_driver_roboswitch_init,
419 .deinit = wpa_driver_roboswitch_deinit,
420 .get_ifname = wpa_driver_roboswitch_get_ifname,