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
asix_read_cmd(struct usbnet * dev,u8 cmd,u16 value,u16 index,u16 size,void * data)24 int 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
asix_write_cmd(struct usbnet * dev,u8 cmd,u16 value,u16 index,u16 size,void * data)37 int 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
asix_write_cmd_async(struct usbnet * dev,u8 cmd,u16 value,u16 index,u16 size,void * data)45 void 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
asix_rx_fixup_internal(struct usbnet * dev,struct sk_buff * skb,struct asix_rx_fixup_info * rx)53 int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
54 struct asix_rx_fixup_info *rx)
55 {
56 int offset = 0;
57 u16 size;
58
59 /* When an Ethernet frame spans multiple URB socket buffers,
60 * do a sanity test for the Data header synchronisation.
61 * Attempt to detect the situation of the previous socket buffer having
62 * been truncated or a socket buffer was missing. These situations
63 * cause a discontinuity in the data stream and therefore need to avoid
64 * appending bad data to the end of the current netdev socket buffer.
65 * Also avoid unnecessarily discarding a good current netdev socket
66 * buffer.
67 */
68 if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) {
69 offset = ((rx->remaining + 1) & 0xfffe);
70 rx->header = get_unaligned_le32(skb->data + offset);
71 offset = 0;
72
73 size = (u16)(rx->header & 0x7ff);
74 if (size != ((~rx->header >> 16) & 0x7ff)) {
75 netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n",
76 rx->remaining);
77 if (rx->ax_skb) {
78 kfree_skb(rx->ax_skb);
79 rx->ax_skb = NULL;
80 /* Discard the incomplete netdev Ethernet frame
81 * and assume the Data header is at the start of
82 * the current URB socket buffer.
83 */
84 }
85 rx->remaining = 0;
86 }
87 }
88
89 while (offset + sizeof(u16) <= skb->len) {
90 u16 copy_length;
91 unsigned char *data;
92
93 if (!rx->remaining) {
94 if (skb->len - offset == sizeof(u16)) {
95 rx->header = get_unaligned_le16(
96 skb->data + offset);
97 rx->split_head = true;
98 offset += sizeof(u16);
99 break;
100 }
101
102 if (rx->split_head == true) {
103 rx->header |= (get_unaligned_le16(
104 skb->data + offset) << 16);
105 rx->split_head = false;
106 offset += sizeof(u16);
107 } else {
108 rx->header = get_unaligned_le32(skb->data +
109 offset);
110 offset += sizeof(u32);
111 }
112
113 /* take frame length from Data header 32-bit word */
114 size = (u16)(rx->header & 0x7ff);
115 if (size != ((~rx->header >> 16) & 0x7ff)) {
116 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
117 rx->header, offset);
118 return 0;
119 }
120 if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
121 netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
122 size);
123 return 0;
124 }
125
126 /* Sometimes may fail to get a netdev socket buffer but
127 * continue to process the URB socket buffer so that
128 * synchronisation of the Ethernet frame Data header
129 * word is maintained.
130 */
131 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
132
133 rx->remaining = size;
134 }
135
136 if (rx->remaining > skb->len - offset) {
137 copy_length = skb->len - offset;
138 rx->remaining -= copy_length;
139 } else {
140 copy_length = rx->remaining;
141 rx->remaining = 0;
142 }
143
144 if (rx->ax_skb) {
145 data = skb_put(rx->ax_skb, copy_length);
146 memcpy(data, skb->data + offset, copy_length);
147 if (!rx->remaining)
148 usbnet_skb_return(dev, rx->ax_skb);
149 }
150
151 offset += (copy_length + 1) & 0xfffe;
152 }
153
154 if (skb->len != offset) {
155 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
156 skb->len, offset);
157 return 0;
158 }
159
160 return 1;
161 }
162
asix_rx_fixup_common(struct usbnet * dev,struct sk_buff * skb)163 int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
164 {
165 struct asix_common_private *dp = dev->driver_priv;
166 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
167
168 return asix_rx_fixup_internal(dev, skb, rx);
169 }
170
asix_tx_fixup(struct usbnet * dev,struct sk_buff * skb,gfp_t flags)171 struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
172 gfp_t flags)
173 {
174 int padlen;
175 int headroom = skb_headroom(skb);
176 int tailroom = skb_tailroom(skb);
177 u32 packet_len;
178 u32 padbytes = 0xffff0000;
179
180 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
181
182 /* We need to push 4 bytes in front of frame (packet_len)
183 * and maybe add 4 bytes after the end (if padlen is 4)
184 *
185 * Avoid skb_copy_expand() expensive call, using following rules :
186 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
187 * is false (and if we have 4 bytes of headroom)
188 * - We are allowed to put 4 bytes at tail if skb_cloned()
189 * is false (and if we have 4 bytes of tailroom)
190 *
191 * TCP packets for example are cloned, but skb_header_release()
192 * was called in tcp stack, allowing us to use headroom for our needs.
193 */
194 if (!skb_header_cloned(skb) &&
195 !(padlen && skb_cloned(skb)) &&
196 headroom + tailroom >= 4 + padlen) {
197 /* following should not happen, but better be safe */
198 if (headroom < 4 ||
199 tailroom < padlen) {
200 skb->data = memmove(skb->head + 4, skb->data, skb->len);
201 skb_set_tail_pointer(skb, skb->len);
202 }
203 } else {
204 struct sk_buff *skb2;
205
206 skb2 = skb_copy_expand(skb, 4, padlen, flags);
207 dev_kfree_skb_any(skb);
208 skb = skb2;
209 if (!skb)
210 return NULL;
211 }
212
213 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
214 skb_push(skb, 4);
215 cpu_to_le32s(&packet_len);
216 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
217
218 if (padlen) {
219 cpu_to_le32s(&padbytes);
220 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
221 skb_put(skb, sizeof(padbytes));
222 }
223
224 usbnet_set_skb_tx_stats(skb, 1, 0);
225 return skb;
226 }
227
asix_set_sw_mii(struct usbnet * dev)228 int asix_set_sw_mii(struct usbnet *dev)
229 {
230 int ret;
231 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
232 if (ret < 0)
233 netdev_err(dev->net, "Failed to enable software MII access\n");
234 return ret;
235 }
236
asix_set_hw_mii(struct usbnet * dev)237 int asix_set_hw_mii(struct usbnet *dev)
238 {
239 int ret;
240 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
241 if (ret < 0)
242 netdev_err(dev->net, "Failed to enable hardware MII access\n");
243 return ret;
244 }
245
asix_read_phy_addr(struct usbnet * dev,int internal)246 int asix_read_phy_addr(struct usbnet *dev, int internal)
247 {
248 int offset = (internal ? 1 : 0);
249 u8 buf[2];
250 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
251
252 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
253
254 if (ret < 2) {
255 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
256 goto out;
257 }
258 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
259 *((__le16 *)buf));
260 ret = buf[offset];
261
262 out:
263 return ret;
264 }
265
asix_get_phy_addr(struct usbnet * dev)266 int asix_get_phy_addr(struct usbnet *dev)
267 {
268 /* return the address of the internal phy */
269 return asix_read_phy_addr(dev, 1);
270 }
271
272
asix_sw_reset(struct usbnet * dev,u8 flags)273 int asix_sw_reset(struct usbnet *dev, u8 flags)
274 {
275 int ret;
276
277 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
278 if (ret < 0)
279 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
280
281 return ret;
282 }
283
asix_read_rx_ctl(struct usbnet * dev)284 u16 asix_read_rx_ctl(struct usbnet *dev)
285 {
286 __le16 v;
287 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v);
288
289 if (ret < 0) {
290 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
291 goto out;
292 }
293 ret = le16_to_cpu(v);
294 out:
295 return ret;
296 }
297
asix_write_rx_ctl(struct usbnet * dev,u16 mode)298 int asix_write_rx_ctl(struct usbnet *dev, u16 mode)
299 {
300 int ret;
301
302 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
303 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
304 if (ret < 0)
305 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
306 mode, ret);
307
308 return ret;
309 }
310
asix_read_medium_status(struct usbnet * dev)311 u16 asix_read_medium_status(struct usbnet *dev)
312 {
313 __le16 v;
314 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
315
316 if (ret < 0) {
317 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
318 ret);
319 return ret; /* TODO: callers not checking for error ret */
320 }
321
322 return le16_to_cpu(v);
323
324 }
325
asix_write_medium_mode(struct usbnet * dev,u16 mode)326 int asix_write_medium_mode(struct usbnet *dev, u16 mode)
327 {
328 int ret;
329
330 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
331 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
332 if (ret < 0)
333 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
334 mode, ret);
335
336 return ret;
337 }
338
asix_write_gpio(struct usbnet * dev,u16 value,int sleep)339 int asix_write_gpio(struct usbnet *dev, u16 value, int sleep)
340 {
341 int ret;
342
343 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
344 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
345 if (ret < 0)
346 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
347 value, ret);
348
349 if (sleep)
350 msleep(sleep);
351
352 return ret;
353 }
354
355 /*
356 * AX88772 & AX88178 have a 16-bit RX_CTL value
357 */
asix_set_multicast(struct net_device * net)358 void asix_set_multicast(struct net_device *net)
359 {
360 struct usbnet *dev = netdev_priv(net);
361 struct asix_data *data = (struct asix_data *)&dev->data;
362 u16 rx_ctl = AX_DEFAULT_RX_CTL;
363
364 if (net->flags & IFF_PROMISC) {
365 rx_ctl |= AX_RX_CTL_PRO;
366 } else if (net->flags & IFF_ALLMULTI ||
367 netdev_mc_count(net) > AX_MAX_MCAST) {
368 rx_ctl |= AX_RX_CTL_AMALL;
369 } else if (netdev_mc_empty(net)) {
370 /* just broadcast and directed */
371 } else {
372 /* We use the 20 byte dev->data
373 * for our 8 byte filter buffer
374 * to avoid allocating memory that
375 * is tricky to free later */
376 struct netdev_hw_addr *ha;
377 u32 crc_bits;
378
379 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
380
381 /* Build the multicast hash filter. */
382 netdev_for_each_mc_addr(ha, net) {
383 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
384 data->multi_filter[crc_bits >> 3] |=
385 1 << (crc_bits & 7);
386 }
387
388 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
389 AX_MCAST_FILTER_SIZE, data->multi_filter);
390
391 rx_ctl |= AX_RX_CTL_AM;
392 }
393
394 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
395 }
396
asix_mdio_read(struct net_device * netdev,int phy_id,int loc)397 int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
398 {
399 struct usbnet *dev = netdev_priv(netdev);
400 __le16 res;
401
402 mutex_lock(&dev->phy_mutex);
403 asix_set_sw_mii(dev);
404 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
405 (__u16)loc, 2, &res);
406 asix_set_hw_mii(dev);
407 mutex_unlock(&dev->phy_mutex);
408
409 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
410 phy_id, loc, le16_to_cpu(res));
411
412 return le16_to_cpu(res);
413 }
414
asix_mdio_write(struct net_device * netdev,int phy_id,int loc,int val)415 void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
416 {
417 struct usbnet *dev = netdev_priv(netdev);
418 __le16 res = cpu_to_le16(val);
419
420 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
421 phy_id, loc, val);
422 mutex_lock(&dev->phy_mutex);
423 asix_set_sw_mii(dev);
424 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
425 asix_set_hw_mii(dev);
426 mutex_unlock(&dev->phy_mutex);
427 }
428
asix_get_wol(struct net_device * net,struct ethtool_wolinfo * wolinfo)429 void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
430 {
431 struct usbnet *dev = netdev_priv(net);
432 u8 opt;
433
434 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
435 wolinfo->supported = 0;
436 wolinfo->wolopts = 0;
437 return;
438 }
439 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
440 wolinfo->wolopts = 0;
441 if (opt & AX_MONITOR_LINK)
442 wolinfo->wolopts |= WAKE_PHY;
443 if (opt & AX_MONITOR_MAGIC)
444 wolinfo->wolopts |= WAKE_MAGIC;
445 }
446
asix_set_wol(struct net_device * net,struct ethtool_wolinfo * wolinfo)447 int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
448 {
449 struct usbnet *dev = netdev_priv(net);
450 u8 opt = 0;
451
452 if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
453 return -EINVAL;
454
455 if (wolinfo->wolopts & WAKE_PHY)
456 opt |= AX_MONITOR_LINK;
457 if (wolinfo->wolopts & WAKE_MAGIC)
458 opt |= AX_MONITOR_MAGIC;
459
460 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
461 opt, 0, 0, NULL) < 0)
462 return -EINVAL;
463
464 return 0;
465 }
466
asix_get_eeprom_len(struct net_device * net)467 int asix_get_eeprom_len(struct net_device *net)
468 {
469 return AX_EEPROM_LEN;
470 }
471
asix_get_eeprom(struct net_device * net,struct ethtool_eeprom * eeprom,u8 * data)472 int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
473 u8 *data)
474 {
475 struct usbnet *dev = netdev_priv(net);
476 u16 *eeprom_buff;
477 int first_word, last_word;
478 int i;
479
480 if (eeprom->len == 0)
481 return -EINVAL;
482
483 eeprom->magic = AX_EEPROM_MAGIC;
484
485 first_word = eeprom->offset >> 1;
486 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
487
488 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
489 GFP_KERNEL);
490 if (!eeprom_buff)
491 return -ENOMEM;
492
493 /* ax8817x returns 2 bytes from eeprom on read */
494 for (i = first_word; i <= last_word; i++) {
495 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
496 &(eeprom_buff[i - first_word])) < 0) {
497 kfree(eeprom_buff);
498 return -EIO;
499 }
500 }
501
502 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
503 kfree(eeprom_buff);
504 return 0;
505 }
506
asix_set_eeprom(struct net_device * net,struct ethtool_eeprom * eeprom,u8 * data)507 int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
508 u8 *data)
509 {
510 struct usbnet *dev = netdev_priv(net);
511 u16 *eeprom_buff;
512 int first_word, last_word;
513 int i;
514 int ret;
515
516 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
517 eeprom->len, eeprom->offset, eeprom->magic);
518
519 if (eeprom->len == 0)
520 return -EINVAL;
521
522 if (eeprom->magic != AX_EEPROM_MAGIC)
523 return -EINVAL;
524
525 first_word = eeprom->offset >> 1;
526 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
527
528 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
529 GFP_KERNEL);
530 if (!eeprom_buff)
531 return -ENOMEM;
532
533 /* align data to 16 bit boundaries, read the missing data from
534 the EEPROM */
535 if (eeprom->offset & 1) {
536 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
537 &(eeprom_buff[0]));
538 if (ret < 0) {
539 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
540 goto free;
541 }
542 }
543
544 if ((eeprom->offset + eeprom->len) & 1) {
545 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
546 &(eeprom_buff[last_word - first_word]));
547 if (ret < 0) {
548 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
549 goto free;
550 }
551 }
552
553 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
554
555 /* write data to EEPROM */
556 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL);
557 if (ret < 0) {
558 netdev_err(net, "Failed to enable EEPROM write\n");
559 goto free;
560 }
561 msleep(20);
562
563 for (i = first_word; i <= last_word; i++) {
564 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
565 i, eeprom_buff[i - first_word]);
566 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
567 eeprom_buff[i - first_word], 0, NULL);
568 if (ret < 0) {
569 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
570 i);
571 goto free;
572 }
573 msleep(20);
574 }
575
576 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL);
577 if (ret < 0) {
578 netdev_err(net, "Failed to disable EEPROM write\n");
579 goto free;
580 }
581
582 ret = 0;
583 free:
584 kfree(eeprom_buff);
585 return ret;
586 }
587
asix_get_drvinfo(struct net_device * net,struct ethtool_drvinfo * info)588 void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
589 {
590 /* Inherit standard device info */
591 usbnet_get_drvinfo(net, info);
592 strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
593 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
594 }
595
asix_set_mac_address(struct net_device * net,void * p)596 int asix_set_mac_address(struct net_device *net, void *p)
597 {
598 struct usbnet *dev = netdev_priv(net);
599 struct asix_data *data = (struct asix_data *)&dev->data;
600 struct sockaddr *addr = p;
601
602 if (netif_running(net))
603 return -EBUSY;
604 if (!is_valid_ether_addr(addr->sa_data))
605 return -EADDRNOTAVAIL;
606
607 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
608
609 /* We use the 20 byte dev->data
610 * for our 6 byte mac buffer
611 * to avoid allocating memory that
612 * is tricky to free later */
613 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
614 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
615 data->mac_addr);
616
617 return 0;
618 }
619