Loading...
1/*
2 * ASIX AX8817X based USB 2.0 Ethernet Devices
3 * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
4 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
5 * Copyright (C) 2006 James Painter <jamie.painter@iname.com>
6 * Copyright (c) 2002-2003 TiVo Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 */
21
22#include "asix.h"
23
24int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
25 u16 size, void *data)
26{
27 int ret;
28 ret = usbnet_read_cmd(dev, cmd,
29 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
30 value, index, data, size);
31
32 if (ret != size && ret >= 0)
33 return -EINVAL;
34 return ret;
35}
36
37int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
38 u16 size, void *data)
39{
40 return usbnet_write_cmd(dev, cmd,
41 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
42 value, index, data, size);
43}
44
45void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
46 u16 size, void *data)
47{
48 usbnet_write_cmd_async(dev, cmd,
49 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
50 value, index, data, size);
51}
52
53int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
54 struct asix_rx_fixup_info *rx)
55{
56 int offset = 0;
57
58 while (offset + sizeof(u16) <= skb->len) {
59 u16 remaining = 0;
60 unsigned char *data;
61
62 if (!rx->size) {
63 if ((skb->len - offset == sizeof(u16)) ||
64 rx->split_head) {
65 if(!rx->split_head) {
66 rx->header = get_unaligned_le16(
67 skb->data + offset);
68 rx->split_head = true;
69 offset += sizeof(u16);
70 break;
71 } else {
72 rx->header |= (get_unaligned_le16(
73 skb->data + offset)
74 << 16);
75 rx->split_head = false;
76 offset += sizeof(u16);
77 }
78 } else {
79 rx->header = get_unaligned_le32(skb->data +
80 offset);
81 offset += sizeof(u32);
82 }
83
84 /* get the packet length */
85 rx->size = (u16) (rx->header & 0x7ff);
86 if (rx->size != ((~rx->header >> 16) & 0x7ff)) {
87 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
88 rx->header, offset);
89 rx->size = 0;
90 return 0;
91 }
92 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net,
93 rx->size);
94 if (!rx->ax_skb)
95 return 0;
96 }
97
98 if (rx->size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
99 netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
100 rx->size);
101 kfree_skb(rx->ax_skb);
102 rx->ax_skb = NULL;
103 rx->size = 0U;
104
105 return 0;
106 }
107
108 if (rx->size > skb->len - offset) {
109 remaining = rx->size - (skb->len - offset);
110 rx->size = skb->len - offset;
111 }
112
113 data = skb_put(rx->ax_skb, rx->size);
114 memcpy(data, skb->data + offset, rx->size);
115 if (!remaining)
116 usbnet_skb_return(dev, rx->ax_skb);
117
118 offset += (rx->size + 1) & 0xfffe;
119 rx->size = remaining;
120 }
121
122 if (skb->len != offset) {
123 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
124 skb->len, offset);
125 return 0;
126 }
127
128 return 1;
129}
130
131int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
132{
133 struct asix_common_private *dp = dev->driver_priv;
134 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
135
136 return asix_rx_fixup_internal(dev, skb, rx);
137}
138
139struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
140 gfp_t flags)
141{
142 int padlen;
143 int headroom = skb_headroom(skb);
144 int tailroom = skb_tailroom(skb);
145 u32 packet_len;
146 u32 padbytes = 0xffff0000;
147
148 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
149
150 /* We need to push 4 bytes in front of frame (packet_len)
151 * and maybe add 4 bytes after the end (if padlen is 4)
152 *
153 * Avoid skb_copy_expand() expensive call, using following rules :
154 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
155 * is false (and if we have 4 bytes of headroom)
156 * - We are allowed to put 4 bytes at tail if skb_cloned()
157 * is false (and if we have 4 bytes of tailroom)
158 *
159 * TCP packets for example are cloned, but skb_header_release()
160 * was called in tcp stack, allowing us to use headroom for our needs.
161 */
162 if (!skb_header_cloned(skb) &&
163 !(padlen && skb_cloned(skb)) &&
164 headroom + tailroom >= 4 + padlen) {
165 /* following should not happen, but better be safe */
166 if (headroom < 4 ||
167 tailroom < padlen) {
168 skb->data = memmove(skb->head + 4, skb->data, skb->len);
169 skb_set_tail_pointer(skb, skb->len);
170 }
171 } else {
172 struct sk_buff *skb2;
173
174 skb2 = skb_copy_expand(skb, 4, padlen, flags);
175 dev_kfree_skb_any(skb);
176 skb = skb2;
177 if (!skb)
178 return NULL;
179 }
180
181 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
182 skb_push(skb, 4);
183 cpu_to_le32s(&packet_len);
184 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
185
186 if (padlen) {
187 cpu_to_le32s(&padbytes);
188 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
189 skb_put(skb, sizeof(padbytes));
190 }
191 return skb;
192}
193
194int asix_set_sw_mii(struct usbnet *dev)
195{
196 int ret;
197 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
198 if (ret < 0)
199 netdev_err(dev->net, "Failed to enable software MII access\n");
200 return ret;
201}
202
203int asix_set_hw_mii(struct usbnet *dev)
204{
205 int ret;
206 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
207 if (ret < 0)
208 netdev_err(dev->net, "Failed to enable hardware MII access\n");
209 return ret;
210}
211
212int asix_read_phy_addr(struct usbnet *dev, int internal)
213{
214 int offset = (internal ? 1 : 0);
215 u8 buf[2];
216 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
217
218 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
219
220 if (ret < 0) {
221 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
222 goto out;
223 }
224 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
225 *((__le16 *)buf));
226 ret = buf[offset];
227
228out:
229 return ret;
230}
231
232int asix_get_phy_addr(struct usbnet *dev)
233{
234 /* return the address of the internal phy */
235 return asix_read_phy_addr(dev, 1);
236}
237
238
239int asix_sw_reset(struct usbnet *dev, u8 flags)
240{
241 int ret;
242
243 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
244 if (ret < 0)
245 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
246
247 return ret;
248}
249
250u16 asix_read_rx_ctl(struct usbnet *dev)
251{
252 __le16 v;
253 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v);
254
255 if (ret < 0) {
256 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
257 goto out;
258 }
259 ret = le16_to_cpu(v);
260out:
261 return ret;
262}
263
264int asix_write_rx_ctl(struct usbnet *dev, u16 mode)
265{
266 int ret;
267
268 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
269 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
270 if (ret < 0)
271 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
272 mode, ret);
273
274 return ret;
275}
276
277u16 asix_read_medium_status(struct usbnet *dev)
278{
279 __le16 v;
280 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
281
282 if (ret < 0) {
283 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
284 ret);
285 return ret; /* TODO: callers not checking for error ret */
286 }
287
288 return le16_to_cpu(v);
289
290}
291
292int asix_write_medium_mode(struct usbnet *dev, u16 mode)
293{
294 int ret;
295
296 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
297 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
298 if (ret < 0)
299 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
300 mode, ret);
301
302 return ret;
303}
304
305int asix_write_gpio(struct usbnet *dev, u16 value, int sleep)
306{
307 int ret;
308
309 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
310 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
311 if (ret < 0)
312 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
313 value, ret);
314
315 if (sleep)
316 msleep(sleep);
317
318 return ret;
319}
320
321/*
322 * AX88772 & AX88178 have a 16-bit RX_CTL value
323 */
324void asix_set_multicast(struct net_device *net)
325{
326 struct usbnet *dev = netdev_priv(net);
327 struct asix_data *data = (struct asix_data *)&dev->data;
328 u16 rx_ctl = AX_DEFAULT_RX_CTL;
329
330 if (net->flags & IFF_PROMISC) {
331 rx_ctl |= AX_RX_CTL_PRO;
332 } else if (net->flags & IFF_ALLMULTI ||
333 netdev_mc_count(net) > AX_MAX_MCAST) {
334 rx_ctl |= AX_RX_CTL_AMALL;
335 } else if (netdev_mc_empty(net)) {
336 /* just broadcast and directed */
337 } else {
338 /* We use the 20 byte dev->data
339 * for our 8 byte filter buffer
340 * to avoid allocating memory that
341 * is tricky to free later */
342 struct netdev_hw_addr *ha;
343 u32 crc_bits;
344
345 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
346
347 /* Build the multicast hash filter. */
348 netdev_for_each_mc_addr(ha, net) {
349 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
350 data->multi_filter[crc_bits >> 3] |=
351 1 << (crc_bits & 7);
352 }
353
354 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
355 AX_MCAST_FILTER_SIZE, data->multi_filter);
356
357 rx_ctl |= AX_RX_CTL_AM;
358 }
359
360 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
361}
362
363int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
364{
365 struct usbnet *dev = netdev_priv(netdev);
366 __le16 res;
367
368 mutex_lock(&dev->phy_mutex);
369 asix_set_sw_mii(dev);
370 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
371 (__u16)loc, 2, &res);
372 asix_set_hw_mii(dev);
373 mutex_unlock(&dev->phy_mutex);
374
375 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
376 phy_id, loc, le16_to_cpu(res));
377
378 return le16_to_cpu(res);
379}
380
381void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
382{
383 struct usbnet *dev = netdev_priv(netdev);
384 __le16 res = cpu_to_le16(val);
385
386 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
387 phy_id, loc, val);
388 mutex_lock(&dev->phy_mutex);
389 asix_set_sw_mii(dev);
390 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
391 asix_set_hw_mii(dev);
392 mutex_unlock(&dev->phy_mutex);
393}
394
395void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
396{
397 struct usbnet *dev = netdev_priv(net);
398 u8 opt;
399
400 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
401 wolinfo->supported = 0;
402 wolinfo->wolopts = 0;
403 return;
404 }
405 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
406 wolinfo->wolopts = 0;
407 if (opt & AX_MONITOR_LINK)
408 wolinfo->wolopts |= WAKE_PHY;
409 if (opt & AX_MONITOR_MAGIC)
410 wolinfo->wolopts |= WAKE_MAGIC;
411}
412
413int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
414{
415 struct usbnet *dev = netdev_priv(net);
416 u8 opt = 0;
417
418 if (wolinfo->wolopts & WAKE_PHY)
419 opt |= AX_MONITOR_LINK;
420 if (wolinfo->wolopts & WAKE_MAGIC)
421 opt |= AX_MONITOR_MAGIC;
422
423 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
424 opt, 0, 0, NULL) < 0)
425 return -EINVAL;
426
427 return 0;
428}
429
430int asix_get_eeprom_len(struct net_device *net)
431{
432 return AX_EEPROM_LEN;
433}
434
435int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
436 u8 *data)
437{
438 struct usbnet *dev = netdev_priv(net);
439 u16 *eeprom_buff;
440 int first_word, last_word;
441 int i;
442
443 if (eeprom->len == 0)
444 return -EINVAL;
445
446 eeprom->magic = AX_EEPROM_MAGIC;
447
448 first_word = eeprom->offset >> 1;
449 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
450
451 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
452 GFP_KERNEL);
453 if (!eeprom_buff)
454 return -ENOMEM;
455
456 /* ax8817x returns 2 bytes from eeprom on read */
457 for (i = first_word; i <= last_word; i++) {
458 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
459 &(eeprom_buff[i - first_word])) < 0) {
460 kfree(eeprom_buff);
461 return -EIO;
462 }
463 }
464
465 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
466 kfree(eeprom_buff);
467 return 0;
468}
469
470int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
471 u8 *data)
472{
473 struct usbnet *dev = netdev_priv(net);
474 u16 *eeprom_buff;
475 int first_word, last_word;
476 int i;
477 int ret;
478
479 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
480 eeprom->len, eeprom->offset, eeprom->magic);
481
482 if (eeprom->len == 0)
483 return -EINVAL;
484
485 if (eeprom->magic != AX_EEPROM_MAGIC)
486 return -EINVAL;
487
488 first_word = eeprom->offset >> 1;
489 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
490
491 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
492 GFP_KERNEL);
493 if (!eeprom_buff)
494 return -ENOMEM;
495
496 /* align data to 16 bit boundaries, read the missing data from
497 the EEPROM */
498 if (eeprom->offset & 1) {
499 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
500 &(eeprom_buff[0]));
501 if (ret < 0) {
502 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
503 goto free;
504 }
505 }
506
507 if ((eeprom->offset + eeprom->len) & 1) {
508 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
509 &(eeprom_buff[last_word - first_word]));
510 if (ret < 0) {
511 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
512 goto free;
513 }
514 }
515
516 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
517
518 /* write data to EEPROM */
519 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL);
520 if (ret < 0) {
521 netdev_err(net, "Failed to enable EEPROM write\n");
522 goto free;
523 }
524 msleep(20);
525
526 for (i = first_word; i <= last_word; i++) {
527 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
528 i, eeprom_buff[i - first_word]);
529 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
530 eeprom_buff[i - first_word], 0, NULL);
531 if (ret < 0) {
532 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
533 i);
534 goto free;
535 }
536 msleep(20);
537 }
538
539 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL);
540 if (ret < 0) {
541 netdev_err(net, "Failed to disable EEPROM write\n");
542 goto free;
543 }
544
545 ret = 0;
546free:
547 kfree(eeprom_buff);
548 return ret;
549}
550
551void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
552{
553 /* Inherit standard device info */
554 usbnet_get_drvinfo(net, info);
555 strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
556 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
557 info->eedump_len = AX_EEPROM_LEN;
558}
559
560int asix_set_mac_address(struct net_device *net, void *p)
561{
562 struct usbnet *dev = netdev_priv(net);
563 struct asix_data *data = (struct asix_data *)&dev->data;
564 struct sockaddr *addr = p;
565
566 if (netif_running(net))
567 return -EBUSY;
568 if (!is_valid_ether_addr(addr->sa_data))
569 return -EADDRNOTAVAIL;
570
571 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
572
573 /* We use the 20 byte dev->data
574 * for our 6 byte mac buffer
575 * to avoid allocating memory that
576 * is tricky to free later */
577 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
578 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
579 data->mac_addr);
580
581 return 0;
582}
1/*
2 * ASIX AX8817X based USB 2.0 Ethernet Devices
3 * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
4 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
5 * Copyright (C) 2006 James Painter <jamie.painter@iname.com>
6 * Copyright (c) 2002-2003 TiVo Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 */
21
22#include "asix.h"
23
24int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
25 u16 size, void *data, int in_pm)
26{
27 int ret;
28 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
29
30 BUG_ON(!dev);
31
32 if (!in_pm)
33 fn = usbnet_read_cmd;
34 else
35 fn = usbnet_read_cmd_nopm;
36
37 ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
38 value, index, data, size);
39
40 if (unlikely(ret < 0))
41 netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",
42 index, ret);
43
44 return ret;
45}
46
47int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
48 u16 size, void *data, int in_pm)
49{
50 int ret;
51 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
52
53 BUG_ON(!dev);
54
55 if (!in_pm)
56 fn = usbnet_write_cmd;
57 else
58 fn = usbnet_write_cmd_nopm;
59
60 ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
61 value, index, data, size);
62
63 if (unlikely(ret < 0))
64 netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",
65 index, ret);
66
67 return ret;
68}
69
70void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
71 u16 size, void *data)
72{
73 usbnet_write_cmd_async(dev, cmd,
74 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
75 value, index, data, size);
76}
77
78int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
79 struct asix_rx_fixup_info *rx)
80{
81 int offset = 0;
82 u16 size;
83
84 /* When an Ethernet frame spans multiple URB socket buffers,
85 * do a sanity test for the Data header synchronisation.
86 * Attempt to detect the situation of the previous socket buffer having
87 * been truncated or a socket buffer was missing. These situations
88 * cause a discontinuity in the data stream and therefore need to avoid
89 * appending bad data to the end of the current netdev socket buffer.
90 * Also avoid unnecessarily discarding a good current netdev socket
91 * buffer.
92 */
93 if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) {
94 offset = ((rx->remaining + 1) & 0xfffe);
95 rx->header = get_unaligned_le32(skb->data + offset);
96 offset = 0;
97
98 size = (u16)(rx->header & 0x7ff);
99 if (size != ((~rx->header >> 16) & 0x7ff)) {
100 netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n",
101 rx->remaining);
102 if (rx->ax_skb) {
103 kfree_skb(rx->ax_skb);
104 rx->ax_skb = NULL;
105 /* Discard the incomplete netdev Ethernet frame
106 * and assume the Data header is at the start of
107 * the current URB socket buffer.
108 */
109 }
110 rx->remaining = 0;
111 }
112 }
113
114 while (offset + sizeof(u16) <= skb->len) {
115 u16 copy_length;
116 unsigned char *data;
117
118 if (!rx->remaining) {
119 if (skb->len - offset == sizeof(u16)) {
120 rx->header = get_unaligned_le16(
121 skb->data + offset);
122 rx->split_head = true;
123 offset += sizeof(u16);
124 break;
125 }
126
127 if (rx->split_head == true) {
128 rx->header |= (get_unaligned_le16(
129 skb->data + offset) << 16);
130 rx->split_head = false;
131 offset += sizeof(u16);
132 } else {
133 rx->header = get_unaligned_le32(skb->data +
134 offset);
135 offset += sizeof(u32);
136 }
137
138 /* take frame length from Data header 32-bit word */
139 size = (u16)(rx->header & 0x7ff);
140 if (size != ((~rx->header >> 16) & 0x7ff)) {
141 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
142 rx->header, offset);
143 return 0;
144 }
145 if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
146 netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
147 size);
148 return 0;
149 }
150
151 /* Sometimes may fail to get a netdev socket buffer but
152 * continue to process the URB socket buffer so that
153 * synchronisation of the Ethernet frame Data header
154 * word is maintained.
155 */
156 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
157
158 rx->remaining = size;
159 }
160
161 if (rx->remaining > skb->len - offset) {
162 copy_length = skb->len - offset;
163 rx->remaining -= copy_length;
164 } else {
165 copy_length = rx->remaining;
166 rx->remaining = 0;
167 }
168
169 if (rx->ax_skb) {
170 data = skb_put(rx->ax_skb, copy_length);
171 memcpy(data, skb->data + offset, copy_length);
172 if (!rx->remaining)
173 usbnet_skb_return(dev, rx->ax_skb);
174 }
175
176 offset += (copy_length + 1) & 0xfffe;
177 }
178
179 if (skb->len != offset) {
180 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
181 skb->len, offset);
182 return 0;
183 }
184
185 return 1;
186}
187
188int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
189{
190 struct asix_common_private *dp = dev->driver_priv;
191 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
192
193 return asix_rx_fixup_internal(dev, skb, rx);
194}
195
196struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
197 gfp_t flags)
198{
199 int padlen;
200 int headroom = skb_headroom(skb);
201 int tailroom = skb_tailroom(skb);
202 u32 packet_len;
203 u32 padbytes = 0xffff0000;
204
205 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
206
207 /* We need to push 4 bytes in front of frame (packet_len)
208 * and maybe add 4 bytes after the end (if padlen is 4)
209 *
210 * Avoid skb_copy_expand() expensive call, using following rules :
211 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
212 * is false (and if we have 4 bytes of headroom)
213 * - We are allowed to put 4 bytes at tail if skb_cloned()
214 * is false (and if we have 4 bytes of tailroom)
215 *
216 * TCP packets for example are cloned, but skb_header_release()
217 * was called in tcp stack, allowing us to use headroom for our needs.
218 */
219 if (!skb_header_cloned(skb) &&
220 !(padlen && skb_cloned(skb)) &&
221 headroom + tailroom >= 4 + padlen) {
222 /* following should not happen, but better be safe */
223 if (headroom < 4 ||
224 tailroom < padlen) {
225 skb->data = memmove(skb->head + 4, skb->data, skb->len);
226 skb_set_tail_pointer(skb, skb->len);
227 }
228 } else {
229 struct sk_buff *skb2;
230
231 skb2 = skb_copy_expand(skb, 4, padlen, flags);
232 dev_kfree_skb_any(skb);
233 skb = skb2;
234 if (!skb)
235 return NULL;
236 }
237
238 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
239 skb_push(skb, 4);
240 cpu_to_le32s(&packet_len);
241 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
242
243 if (padlen) {
244 cpu_to_le32s(&padbytes);
245 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
246 skb_put(skb, sizeof(padbytes));
247 }
248
249 usbnet_set_skb_tx_stats(skb, 1, 0);
250 return skb;
251}
252
253int asix_set_sw_mii(struct usbnet *dev, int in_pm)
254{
255 int ret;
256 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL, in_pm);
257
258 if (ret < 0)
259 netdev_err(dev->net, "Failed to enable software MII access\n");
260 return ret;
261}
262
263int asix_set_hw_mii(struct usbnet *dev, int in_pm)
264{
265 int ret;
266 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL, in_pm);
267 if (ret < 0)
268 netdev_err(dev->net, "Failed to enable hardware MII access\n");
269 return ret;
270}
271
272int asix_read_phy_addr(struct usbnet *dev, int internal)
273{
274 int offset = (internal ? 1 : 0);
275 u8 buf[2];
276 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0);
277
278 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
279
280 if (ret < 0) {
281 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
282 goto out;
283 }
284 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
285 *((__le16 *)buf));
286 ret = buf[offset];
287
288out:
289 return ret;
290}
291
292int asix_get_phy_addr(struct usbnet *dev)
293{
294 /* return the address of the internal phy */
295 return asix_read_phy_addr(dev, 1);
296}
297
298
299int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm)
300{
301 int ret;
302
303 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL, in_pm);
304 if (ret < 0)
305 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
306
307 return ret;
308}
309
310u16 asix_read_rx_ctl(struct usbnet *dev, int in_pm)
311{
312 __le16 v;
313 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v, in_pm);
314
315 if (ret < 0) {
316 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
317 goto out;
318 }
319 ret = le16_to_cpu(v);
320out:
321 return ret;
322}
323
324int asix_write_rx_ctl(struct usbnet *dev, u16 mode, int in_pm)
325{
326 int ret;
327
328 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
329 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL, in_pm);
330 if (ret < 0)
331 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
332 mode, ret);
333
334 return ret;
335}
336
337u16 asix_read_medium_status(struct usbnet *dev, int in_pm)
338{
339 __le16 v;
340 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS,
341 0, 0, 2, &v, in_pm);
342
343 if (ret < 0) {
344 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
345 ret);
346 return ret; /* TODO: callers not checking for error ret */
347 }
348
349 return le16_to_cpu(v);
350
351}
352
353int asix_write_medium_mode(struct usbnet *dev, u16 mode, int in_pm)
354{
355 int ret;
356
357 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
358 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,
359 mode, 0, 0, NULL, in_pm);
360 if (ret < 0)
361 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
362 mode, ret);
363
364 return ret;
365}
366
367int asix_write_gpio(struct usbnet *dev, u16 value, int sleep, int in_pm)
368{
369 int ret;
370
371 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
372 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL, in_pm);
373 if (ret < 0)
374 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
375 value, ret);
376
377 if (sleep)
378 msleep(sleep);
379
380 return ret;
381}
382
383/*
384 * AX88772 & AX88178 have a 16-bit RX_CTL value
385 */
386void asix_set_multicast(struct net_device *net)
387{
388 struct usbnet *dev = netdev_priv(net);
389 struct asix_data *data = (struct asix_data *)&dev->data;
390 u16 rx_ctl = AX_DEFAULT_RX_CTL;
391
392 if (net->flags & IFF_PROMISC) {
393 rx_ctl |= AX_RX_CTL_PRO;
394 } else if (net->flags & IFF_ALLMULTI ||
395 netdev_mc_count(net) > AX_MAX_MCAST) {
396 rx_ctl |= AX_RX_CTL_AMALL;
397 } else if (netdev_mc_empty(net)) {
398 /* just broadcast and directed */
399 } else {
400 /* We use the 20 byte dev->data
401 * for our 8 byte filter buffer
402 * to avoid allocating memory that
403 * is tricky to free later */
404 struct netdev_hw_addr *ha;
405 u32 crc_bits;
406
407 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
408
409 /* Build the multicast hash filter. */
410 netdev_for_each_mc_addr(ha, net) {
411 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
412 data->multi_filter[crc_bits >> 3] |=
413 1 << (crc_bits & 7);
414 }
415
416 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
417 AX_MCAST_FILTER_SIZE, data->multi_filter);
418
419 rx_ctl |= AX_RX_CTL_AM;
420 }
421
422 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
423}
424
425int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
426{
427 struct usbnet *dev = netdev_priv(netdev);
428 __le16 res;
429 u8 smsr;
430 int i = 0;
431 int ret;
432
433 mutex_lock(&dev->phy_mutex);
434 do {
435 ret = asix_set_sw_mii(dev, 0);
436 if (ret == -ENODEV || ret == -ETIMEDOUT)
437 break;
438 usleep_range(1000, 1100);
439 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
440 0, 0, 1, &smsr, 0);
441 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
442 if (ret == -ENODEV || ret == -ETIMEDOUT) {
443 mutex_unlock(&dev->phy_mutex);
444 return ret;
445 }
446
447 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
448 (__u16)loc, 2, &res, 0);
449 asix_set_hw_mii(dev, 0);
450 mutex_unlock(&dev->phy_mutex);
451
452 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
453 phy_id, loc, le16_to_cpu(res));
454
455 return le16_to_cpu(res);
456}
457
458void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
459{
460 struct usbnet *dev = netdev_priv(netdev);
461 __le16 res = cpu_to_le16(val);
462 u8 smsr;
463 int i = 0;
464 int ret;
465
466 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
467 phy_id, loc, val);
468
469 mutex_lock(&dev->phy_mutex);
470 do {
471 ret = asix_set_sw_mii(dev, 0);
472 if (ret == -ENODEV)
473 break;
474 usleep_range(1000, 1100);
475 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
476 0, 0, 1, &smsr, 0);
477 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
478 if (ret == -ENODEV) {
479 mutex_unlock(&dev->phy_mutex);
480 return;
481 }
482
483 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
484 (__u16)loc, 2, &res, 0);
485 asix_set_hw_mii(dev, 0);
486 mutex_unlock(&dev->phy_mutex);
487}
488
489int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc)
490{
491 struct usbnet *dev = netdev_priv(netdev);
492 __le16 res;
493 u8 smsr;
494 int i = 0;
495 int ret;
496
497 mutex_lock(&dev->phy_mutex);
498 do {
499 ret = asix_set_sw_mii(dev, 1);
500 if (ret == -ENODEV || ret == -ETIMEDOUT)
501 break;
502 usleep_range(1000, 1100);
503 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
504 0, 0, 1, &smsr, 1);
505 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
506 if (ret == -ENODEV || ret == -ETIMEDOUT) {
507 mutex_unlock(&dev->phy_mutex);
508 return ret;
509 }
510
511 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
512 (__u16)loc, 2, &res, 1);
513 asix_set_hw_mii(dev, 1);
514 mutex_unlock(&dev->phy_mutex);
515
516 netdev_dbg(dev->net, "asix_mdio_read_nopm() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
517 phy_id, loc, le16_to_cpu(res));
518
519 return le16_to_cpu(res);
520}
521
522void
523asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val)
524{
525 struct usbnet *dev = netdev_priv(netdev);
526 __le16 res = cpu_to_le16(val);
527 u8 smsr;
528 int i = 0;
529 int ret;
530
531 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
532 phy_id, loc, val);
533
534 mutex_lock(&dev->phy_mutex);
535 do {
536 ret = asix_set_sw_mii(dev, 1);
537 if (ret == -ENODEV)
538 break;
539 usleep_range(1000, 1100);
540 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
541 0, 0, 1, &smsr, 1);
542 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
543 if (ret == -ENODEV) {
544 mutex_unlock(&dev->phy_mutex);
545 return;
546 }
547
548 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
549 (__u16)loc, 2, &res, 1);
550 asix_set_hw_mii(dev, 1);
551 mutex_unlock(&dev->phy_mutex);
552}
553
554void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
555{
556 struct usbnet *dev = netdev_priv(net);
557 u8 opt;
558
559 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE,
560 0, 0, 1, &opt, 0) < 0) {
561 wolinfo->supported = 0;
562 wolinfo->wolopts = 0;
563 return;
564 }
565 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
566 wolinfo->wolopts = 0;
567 if (opt & AX_MONITOR_LINK)
568 wolinfo->wolopts |= WAKE_PHY;
569 if (opt & AX_MONITOR_MAGIC)
570 wolinfo->wolopts |= WAKE_MAGIC;
571}
572
573int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
574{
575 struct usbnet *dev = netdev_priv(net);
576 u8 opt = 0;
577
578 if (wolinfo->wolopts & WAKE_PHY)
579 opt |= AX_MONITOR_LINK;
580 if (wolinfo->wolopts & WAKE_MAGIC)
581 opt |= AX_MONITOR_MAGIC;
582
583 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
584 opt, 0, 0, NULL, 0) < 0)
585 return -EINVAL;
586
587 return 0;
588}
589
590int asix_get_eeprom_len(struct net_device *net)
591{
592 return AX_EEPROM_LEN;
593}
594
595int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
596 u8 *data)
597{
598 struct usbnet *dev = netdev_priv(net);
599 u16 *eeprom_buff;
600 int first_word, last_word;
601 int i;
602
603 if (eeprom->len == 0)
604 return -EINVAL;
605
606 eeprom->magic = AX_EEPROM_MAGIC;
607
608 first_word = eeprom->offset >> 1;
609 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
610
611 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
612 GFP_KERNEL);
613 if (!eeprom_buff)
614 return -ENOMEM;
615
616 /* ax8817x returns 2 bytes from eeprom on read */
617 for (i = first_word; i <= last_word; i++) {
618 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
619 &eeprom_buff[i - first_word], 0) < 0) {
620 kfree(eeprom_buff);
621 return -EIO;
622 }
623 }
624
625 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
626 kfree(eeprom_buff);
627 return 0;
628}
629
630int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
631 u8 *data)
632{
633 struct usbnet *dev = netdev_priv(net);
634 u16 *eeprom_buff;
635 int first_word, last_word;
636 int i;
637 int ret;
638
639 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
640 eeprom->len, eeprom->offset, eeprom->magic);
641
642 if (eeprom->len == 0)
643 return -EINVAL;
644
645 if (eeprom->magic != AX_EEPROM_MAGIC)
646 return -EINVAL;
647
648 first_word = eeprom->offset >> 1;
649 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
650
651 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
652 GFP_KERNEL);
653 if (!eeprom_buff)
654 return -ENOMEM;
655
656 /* align data to 16 bit boundaries, read the missing data from
657 the EEPROM */
658 if (eeprom->offset & 1) {
659 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
660 &eeprom_buff[0], 0);
661 if (ret < 0) {
662 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
663 goto free;
664 }
665 }
666
667 if ((eeprom->offset + eeprom->len) & 1) {
668 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
669 &eeprom_buff[last_word - first_word], 0);
670 if (ret < 0) {
671 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
672 goto free;
673 }
674 }
675
676 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
677
678 /* write data to EEPROM */
679 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL, 0);
680 if (ret < 0) {
681 netdev_err(net, "Failed to enable EEPROM write\n");
682 goto free;
683 }
684 msleep(20);
685
686 for (i = first_word; i <= last_word; i++) {
687 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
688 i, eeprom_buff[i - first_word]);
689 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
690 eeprom_buff[i - first_word], 0, NULL, 0);
691 if (ret < 0) {
692 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
693 i);
694 goto free;
695 }
696 msleep(20);
697 }
698
699 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL, 0);
700 if (ret < 0) {
701 netdev_err(net, "Failed to disable EEPROM write\n");
702 goto free;
703 }
704
705 ret = 0;
706free:
707 kfree(eeprom_buff);
708 return ret;
709}
710
711void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
712{
713 /* Inherit standard device info */
714 usbnet_get_drvinfo(net, info);
715 strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
716 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
717}
718
719int asix_set_mac_address(struct net_device *net, void *p)
720{
721 struct usbnet *dev = netdev_priv(net);
722 struct asix_data *data = (struct asix_data *)&dev->data;
723 struct sockaddr *addr = p;
724
725 if (netif_running(net))
726 return -EBUSY;
727 if (!is_valid_ether_addr(addr->sa_data))
728 return -EADDRNOTAVAIL;
729
730 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
731
732 /* We use the 20 byte dev->data
733 * for our 6 byte mac buffer
734 * to avoid allocating memory that
735 * is tricky to free later */
736 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
737 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
738 data->mac_addr);
739
740 return 0;
741}