?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
hostapd: Update vendor branch to 0.6.10
[dragonfly.git] / contrib / hostapd / src / drivers / driver_roboswitch.c
blobbc11a484843260aeebfc942c2cb31964321bebe2
1 /*
2 * WPA Supplicant - roboswitch driver interface
3 * Copyright (c) 2008-2009 Jouke Witteveen
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 version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #include "includes.h"
16 #include <sys/ioctl.h>
17 #include <linux/if.h>
18 #include <linux/sockios.h>
19 #include <linux/if_ether.h>
20 #include <linux/mii.h>
21
22 #include "common.h"
23 #include "driver.h"
24 #include "l2_packet/l2_packet.h"
25
26 #ifndef ETH_P_EAPOL
27 #define ETH_P_EAPOL 0x888e
28 #endif
29
30 #define ROBO_PHY_ADDR 0x1e /* RoboSwitch PHY address */
31
32 /* MII access registers */
33 #define ROBO_MII_PAGE 0x10 /* MII page register */
34 #define ROBO_MII_ADDR 0x11 /* MII address register */
35 #define ROBO_MII_DATA_OFFSET 0x18 /* Start of MII data registers */
36
37 #define ROBO_MII_PAGE_ENABLE 0x01 /* MII page op code */
38 #define ROBO_MII_ADDR_WRITE 0x01 /* MII address write op code */
39 #define ROBO_MII_ADDR_READ 0x02 /* MII address read op code */
40 #define ROBO_MII_DATA_MAX 4 /* Consecutive MII data registers */
41 #define ROBO_MII_RETRY_MAX 10 /* Read attempts before giving up */
42
43 /* Page numbers */
44 #define ROBO_ARLCTRL_PAGE 0x04 /* ARL control page */
45 #define ROBO_VLAN_PAGE 0x34 /* VLAN page */
46
47 /* ARL control page registers */
48 #define ROBO_ARLCTRL_CONF 0x00 /* ARL configuration register */
49 #define ROBO_ARLCTRL_ADDR_1 0x10 /* Multiport address 1 */
50 #define ROBO_ARLCTRL_VEC_1 0x16 /* Multiport vector 1 */
51 #define ROBO_ARLCTRL_ADDR_2 0x20 /* Multiport address 2 */
52 #define ROBO_ARLCTRL_VEC_2 0x26 /* Multiport vector 2 */
53
54 /* VLAN page registers */
55 #define ROBO_VLAN_ACCESS 0x08 /* VLAN table access register */
56 #define ROBO_VLAN_ACCESS_5350 0x06 /* VLAN table access register (5350) */
57 #define ROBO_VLAN_READ 0x0c /* VLAN read register */
58 #define ROBO_VLAN_MAX 0xff /* Maximum number of VLANs */
59
60
61 static const u8 pae_group_addr[ETH_ALEN] =
62 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03 };
63
64
65 struct wpa_driver_roboswitch_data {
66 void *ctx;
67 struct l2_packet_data *l2;
68 char ifname[IFNAMSIZ + 1];
69 u8 own_addr[ETH_ALEN];
70 struct ifreq ifr;
71 int fd, is_5350;
72 u16 ports;
73 };
74
75
76 /* Copied from the kernel-only part of mii.h. */
77 static inline struct mii_ioctl_data *if_mii(struct ifreq *rq)
78 {
79 return (struct mii_ioctl_data *) &rq->ifr_ifru;
80 }
81
82
83 /*
84 * RoboSwitch uses 16-bit Big Endian addresses.
85 * The ordering of the words is reversed in the MII registers.
86 */
87 static void wpa_driver_roboswitch_addr_be16(const u8 addr[ETH_ALEN], u16 *be)
88 {
89 int i;
90 for (i = 0; i < ETH_ALEN; i += 2)
91 be[(ETH_ALEN - i) / 2 - 1] = WPA_GET_BE16(addr + i);
92 }
93
94
95 static u16 wpa_driver_roboswitch_mdio_read(
96 struct wpa_driver_roboswitch_data *drv, u8 reg)
97 {
98 struct mii_ioctl_data *mii = if_mii(&drv->ifr);
99
100 mii->phy_id = ROBO_PHY_ADDR;
101 mii->reg_num = reg;
102
103 if (ioctl(drv->fd, SIOCGMIIREG, &drv->ifr) < 0) {
104 perror("ioctl[SIOCGMIIREG]");
105 return 0x00;
106 }
107 return mii->val_out;
108 }
109
110
111 static void wpa_driver_roboswitch_mdio_write(
112 struct wpa_driver_roboswitch_data *drv, u8 reg, u16 val)
113 {
114 struct mii_ioctl_data *mii = if_mii(&drv->ifr);
115
116 mii->phy_id = ROBO_PHY_ADDR;
117 mii->reg_num = reg;
118 mii->val_in = val;
119
120 if (ioctl(drv->fd, SIOCSMIIREG, &drv->ifr) < 0) {
121 perror("ioctl[SIOCSMIIREG");
122 }
123 }
124
125
126 static int wpa_driver_roboswitch_reg(struct wpa_driver_roboswitch_data *drv,
127 u8 page, u8 reg, u8 op)
128 {
129 int i;
130
131 /* set page number */
132 wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_PAGE,
133 (page << 8) | ROBO_MII_PAGE_ENABLE);
134 /* set register address */
135 wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_ADDR, (reg << 8) | op);
136
137 /* check if operation completed */
138 for (i = 0; i < ROBO_MII_RETRY_MAX; ++i) {
139 if ((wpa_driver_roboswitch_mdio_read(drv, ROBO_MII_ADDR) & 3)
140 == 0)
141 return 0;
142 }
143 /* timeout */
144 return -1;
145 }
146
147
148 static int wpa_driver_roboswitch_read(struct wpa_driver_roboswitch_data *drv,
149 u8 page, u8 reg, u16 *val, int len)
150 {
151 int i;
152
153 if (len > ROBO_MII_DATA_MAX ||
154 wpa_driver_roboswitch_reg(drv, page, reg, ROBO_MII_ADDR_READ) < 0)
155 return -1;
156
157 for (i = 0; i < len; ++i) {
158 val[i] = wpa_driver_roboswitch_mdio_read(
159 drv, ROBO_MII_DATA_OFFSET + i);
160 }
161
162 return 0;
163 }
164
165
166 static int wpa_driver_roboswitch_write(struct wpa_driver_roboswitch_data *drv,
167 u8 page, u8 reg, u16 *val, int len)
168 {
169 int i;
170
171 if (len > ROBO_MII_DATA_MAX) return -1;
172 for (i = 0; i < len; ++i) {
173 wpa_driver_roboswitch_mdio_write(drv, ROBO_MII_DATA_OFFSET + i,
174 val[i]);
175 }
176 return wpa_driver_roboswitch_reg(drv, page, reg, ROBO_MII_ADDR_WRITE);
177 }
178
179
180 static void wpa_driver_roboswitch_receive(void *priv, const u8 *src_addr,
181 const u8 *buf, size_t len)
182 {
183 struct wpa_driver_roboswitch_data *drv = priv;
184
185 if (len > 14 && WPA_GET_BE16(buf + 12) == ETH_P_EAPOL &&
186 os_memcmp(buf, drv->own_addr, ETH_ALEN) == 0) {
187 wpa_supplicant_rx_eapol(drv->ctx, src_addr, buf + 14,
188 len - 14);
189 }
190 }
191
192
193 static int wpa_driver_roboswitch_get_ssid(void *priv, u8 *ssid)
194 {
195 ssid[0] = 0;
196 return 0;
197 }
198
199
200 static int wpa_driver_roboswitch_get_bssid(void *priv, u8 *bssid)
201 {
202 /* Report PAE group address as the "BSSID" for wired connection. */
203 os_memcpy(bssid, pae_group_addr, ETH_ALEN);
204 return 0;
205 }
206
207
208 static int wpa_driver_roboswitch_set_param(void *priv, const char *param)
209 {
210 struct wpa_driver_roboswitch_data *drv = priv;
211 char *sep;
212
213 if (param == NULL || os_strstr(param, "multicast_only=1") == NULL) {
214 sep = drv->ifname + os_strlen(drv->ifname);
215 *sep = '.';
216 drv->l2 = l2_packet_init(drv->ifname, NULL, ETH_P_ALL,
217 wpa_driver_roboswitch_receive, drv,
218 1);
219 if (drv->l2 == NULL) {
220 wpa_printf(MSG_INFO, "%s: Unable to listen on %s",
221 __func__, drv->ifname);
222 return -1;
223 }
224 *sep = '\0';
225 l2_packet_get_own_addr(drv->l2, drv->own_addr);
226 } else {
227 wpa_printf(MSG_DEBUG, "%s: Ignoring unicast frames", __func__);
228 drv->l2 = NULL;
229 }
230 return 0;
231 }
232
233
234 static const char * wpa_driver_roboswitch_get_ifname(void *priv)
235 {
236 struct wpa_driver_roboswitch_data *drv = priv;
237 return drv->ifname;
238 }
239
240
241 static int wpa_driver_roboswitch_join(struct wpa_driver_roboswitch_data *drv,
242 u16 ports, const u8 *addr)
243 {
244 u16 read1[3], read2[3], addr_be16[3];
245
246 wpa_driver_roboswitch_addr_be16(addr, addr_be16);
247
248 if (wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
249 ROBO_ARLCTRL_CONF, read1, 1) < 0)
250 return -1;
251 if (!(read1[0] & (1 << 4))) {
252 /* multiport addresses are not yet enabled */
253 read1[0] |= 1 << 4;
254 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
255 ROBO_ARLCTRL_ADDR_1, addr_be16, 3);
256 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
257 ROBO_ARLCTRL_VEC_1, &ports, 1);
258 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
259 ROBO_ARLCTRL_ADDR_2, addr_be16, 3);
260 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
261 ROBO_ARLCTRL_VEC_2, &ports, 1);
262 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
263 ROBO_ARLCTRL_CONF, read1, 1);
264 } else {
265 /* if both multiport addresses are the same we can add */
266 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
267 ROBO_ARLCTRL_ADDR_1, read1, 3);
268 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
269 ROBO_ARLCTRL_ADDR_2, read2, 3);
270 if (os_memcmp(read1, read2, 6) != 0)
271 return -1;
272 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
273 ROBO_ARLCTRL_VEC_1, read1, 1);
274 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
275 ROBO_ARLCTRL_VEC_2, read2, 1);
276 if (read1[0] != read2[0])
277 return -1;
278 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
279 ROBO_ARLCTRL_ADDR_1, addr_be16, 3);
280 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
281 ROBO_ARLCTRL_VEC_1, &ports, 1);
282 }
283 return 0;
284 }
285
286
287 static int wpa_driver_roboswitch_leave(struct wpa_driver_roboswitch_data *drv,
288 u16 ports, const u8 *addr)
289 {
290 u16 _read, addr_be16[3], addr_read[3], ports_read;
291
292 wpa_driver_roboswitch_addr_be16(addr, addr_be16);
293
294 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE, ROBO_ARLCTRL_CONF,
295 &_read, 1);
296 /* If ARL control is disabled, there is nothing to leave. */
297 if (!(_read & (1 << 4))) return -1;
298
299 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
300 ROBO_ARLCTRL_ADDR_1, addr_read, 3);
301 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE, ROBO_ARLCTRL_VEC_1,
302 &ports_read, 1);
303 /* check if we occupy multiport address 1 */
304 if (os_memcmp(addr_read, addr_be16, 6) == 0 && ports_read == ports) {
305 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
306 ROBO_ARLCTRL_ADDR_2, addr_read, 3);
307 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
308 ROBO_ARLCTRL_VEC_2, &ports_read, 1);
309 /* and multiport address 2 */
310 if (os_memcmp(addr_read, addr_be16, 6) == 0 &&
311 ports_read == ports) {
312 _read &= ~(1 << 4);
313 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
314 ROBO_ARLCTRL_CONF, &_read,
315 1);
316 } else {
317 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
318 ROBO_ARLCTRL_ADDR_1,
319 addr_read, 3);
320 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
321 ROBO_ARLCTRL_VEC_1,
322 &ports_read, 1);
323 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
324 ROBO_ARLCTRL_ADDR_2,
325 addr_read, 3);
326 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
327 ROBO_ARLCTRL_VEC_2,
328 &ports_read, 1);
329 }
330 } else {
331 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
332 ROBO_ARLCTRL_ADDR_2, addr_read, 3);
333 wpa_driver_roboswitch_read(drv, ROBO_ARLCTRL_PAGE,
334 ROBO_ARLCTRL_VEC_2, &ports_read, 1);
335 /* or multiport address 2 */
336 if (os_memcmp(addr_read, addr_be16, 6) == 0 &&
337 ports_read == ports) {
338 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
339 ROBO_ARLCTRL_ADDR_1,
340 addr_read, 3);
341 wpa_driver_roboswitch_write(drv, ROBO_ARLCTRL_PAGE,
342 ROBO_ARLCTRL_VEC_1,
343 &ports_read, 1);
344 } else return -1;
345 }
346 return 0;
347 }
348
349
350 static void * wpa_driver_roboswitch_init(void *ctx, const char *ifname)
351 {
352 struct wpa_driver_roboswitch_data *drv;
353 char *sep;
354 u16 vlan = 0, _read[2];
355
356 drv = os_zalloc(sizeof(*drv));
357 if (drv == NULL) return NULL;
358 drv->ctx = ctx;
359 drv->own_addr[0] = '\0';
360
361 /* copy ifname and take a pointer to the second to last character */
362 sep = drv->ifname +
363 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname)) - 2;
364 /* find the '.' seperating <interface> and <vlan> */
365 while (sep > drv->ifname && *sep != '.') sep--;
366 if (sep <= drv->ifname) {
367 wpa_printf(MSG_INFO, "%s: No <interface>.<vlan> pair in "
368 "interface name %s", __func__, drv->ifname);
369 os_free(drv);
370 return NULL;
371 }
372 *sep = '\0';
373 while (*++sep) {
374 if (*sep < '0' || *sep > '9') {
375 wpa_printf(MSG_INFO, "%s: Invalid vlan specification "
376 "in interface name %s", __func__, ifname);
377 os_free(drv);
378 return NULL;
379 }
380 vlan *= 10;
381 vlan += *sep - '0';
382 if (vlan > ROBO_VLAN_MAX) {
383 wpa_printf(MSG_INFO, "%s: VLAN out of range in "
384 "interface name %s", __func__, ifname);
385 os_free(drv);
386 return NULL;
387 }
388 }
389
390 drv->fd = socket(PF_INET, SOCK_DGRAM, 0);
391 if (drv->fd < 0) {
392 wpa_printf(MSG_INFO, "%s: Unable to create socket", __func__);
393 os_free(drv);
394 return NULL;
395 }
396
397 os_memset(&drv->ifr, 0, sizeof(drv->ifr));
398 os_strlcpy(drv->ifr.ifr_name, drv->ifname, IFNAMSIZ);
399 if (ioctl(drv->fd, SIOCGMIIPHY, &drv->ifr) < 0) {
400 perror("ioctl[SIOCGMIIPHY]");
401 os_free(drv);
402 return NULL;
403 }
404 if (if_mii(&drv->ifr)->phy_id != ROBO_PHY_ADDR) {
405 wpa_printf(MSG_INFO, "%s: Invalid phy address (not a "
406 "RoboSwitch?)", __func__);
407 os_free(drv);
408 return NULL;
409 }
410
411 /* set and read back to see if the register can be used */
412 _read[0] = ROBO_VLAN_MAX;
413 wpa_driver_roboswitch_write(drv, ROBO_VLAN_PAGE, ROBO_VLAN_ACCESS_5350,
414 _read, 1);
415 wpa_driver_roboswitch_read(drv, ROBO_VLAN_PAGE, ROBO_VLAN_ACCESS_5350,
416 _read + 1, 1);
417 drv->is_5350 = _read[0] == _read[1];
418
419 /* set the read bit */
420 vlan |= 1 << 13;
421 wpa_driver_roboswitch_write(drv, ROBO_VLAN_PAGE,
422 drv->is_5350 ? ROBO_VLAN_ACCESS_5350
423 : ROBO_VLAN_ACCESS,
424 &vlan, 1);
425 wpa_driver_roboswitch_read(drv, ROBO_VLAN_PAGE, ROBO_VLAN_READ, _read,
426 drv->is_5350 ? 2 : 1);
427 if (!(drv->is_5350 ? _read[1] & (1 << 4) : _read[0] & (1 << 14))) {
428 wpa_printf(MSG_INFO, "%s: Could not get port information for "
429 "VLAN %d", __func__, vlan & ~(1 << 13));
430 os_free(drv);
431 return NULL;
432 }
433 drv->ports = _read[0] & 0x001F;
434 /* add the MII port */
435 drv->ports |= 1 << 8;
436 if (wpa_driver_roboswitch_join(drv, drv->ports, pae_group_addr) < 0) {
437 wpa_printf(MSG_INFO, "%s: Unable to join PAE group", __func__);
438 os_free(drv);
439 return NULL;
440 } else {
441 wpa_printf(MSG_DEBUG, "%s: Added PAE group address to "
442 "RoboSwitch ARL", __func__);
443 }
444
445 return drv;
446 }
447
448
449 static void wpa_driver_roboswitch_deinit(void *priv)
450 {
451 struct wpa_driver_roboswitch_data *drv = priv;
452
453 if (drv->l2) {
454 l2_packet_deinit(drv->l2);
455 drv->l2 = NULL;
456 }
457 if (wpa_driver_roboswitch_leave(drv, drv->ports, pae_group_addr) < 0) {
458 wpa_printf(MSG_DEBUG, "%s: Unable to leave PAE group",
459 __func__);
460 }
461
462 close(drv->fd);
463 os_free(drv);
464 }
465
466
467 const struct wpa_driver_ops wpa_driver_roboswitch_ops = {
468 .name = "roboswitch",
469 .desc = "wpa_supplicant roboswitch driver",
470 .get_ssid = wpa_driver_roboswitch_get_ssid,
471 .get_bssid = wpa_driver_roboswitch_get_bssid,
472 .init = wpa_driver_roboswitch_init,
473 .deinit = wpa_driver_roboswitch_deinit,
474 .set_param = wpa_driver_roboswitch_set_param,
475 .get_ifname = wpa_driver_roboswitch_get_ifname,
476 };
DragonFly BSD