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wdenkc6097192002-11-03 00:24:07 +00001/*
Detlev Zundelaba4b692010-03-31 17:56:08 +02002 * (C) Copyright 2001-2010
wdenkc6097192002-11-03 00:24:07 +00003 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
wdenkc6097192002-11-03 00:24:07 +00006 */
7
8#include <common.h>
9#include <command.h>
10#include <net.h>
Marian Balakowiczd9785c12005-11-30 18:06:04 +010011#include <miiphy.h>
Andy Fleming5f184712011-04-08 02:10:27 -050012#include <phy.h>
wdenkc6097192002-11-03 00:24:07 +000013
Mike Frysinger3f6e6992009-01-29 19:43:44 -050014void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
15{
16 char *end;
17 int i;
18
19 for (i = 0; i < 6; ++i) {
20 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
21 if (addr)
22 addr = (*end) ? end + 1 : end;
23 }
24}
25
26int eth_getenv_enetaddr(char *name, uchar *enetaddr)
27{
28 eth_parse_enetaddr(getenv(name), enetaddr);
29 return is_valid_ether_addr(enetaddr);
30}
31
32int eth_setenv_enetaddr(char *name, const uchar *enetaddr)
33{
34 char buf[20];
35
36 sprintf(buf, "%pM", enetaddr);
37
38 return setenv(name, buf);
39}
Mike Frysinger86848a72009-07-15 21:31:28 -040040
Simon Glass7616e782011-06-13 16:13:10 -070041int eth_getenv_enetaddr_by_index(const char *base_name, int index,
42 uchar *enetaddr)
Mike Frysinger86848a72009-07-15 21:31:28 -040043{
44 char enetvar[32];
Simon Glass7616e782011-06-13 16:13:10 -070045 sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
Mike Frysinger86848a72009-07-15 21:31:28 -040046 return eth_getenv_enetaddr(enetvar, enetaddr);
47}
Mike Frysinger3f6e6992009-01-29 19:43:44 -050048
Joe Hershberger154177e2012-07-10 16:23:22 -050049static inline int eth_setenv_enetaddr_by_index(const char *base_name, int index,
Rob Herringc88ef3c2012-04-14 18:06:49 +000050 uchar *enetaddr)
51{
52 char enetvar[32];
53 sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
54 return eth_setenv_enetaddr(enetvar, enetaddr);
55}
56
57
Ben Warrenecee9322010-04-26 11:11:46 -070058static int eth_mac_skip(int index)
59{
60 char enetvar[15];
61 char *skip_state;
62 sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
63 return ((skip_state = getenv(enetvar)) != NULL);
64}
65
Michael Walle03c1b042012-06-05 11:33:16 +000066#ifdef CONFIG_RANDOM_MACADDR
67void eth_random_enetaddr(uchar *enetaddr)
68{
69 uint32_t rval;
70
71 srand(get_timer(0));
72
73 rval = rand();
74 enetaddr[0] = rval & 0xff;
75 enetaddr[1] = (rval >> 8) & 0xff;
76 enetaddr[2] = (rval >> 16) & 0xff;
77
78 rval = rand();
79 enetaddr[3] = rval & 0xff;
80 enetaddr[4] = (rval >> 8) & 0xff;
81 enetaddr[5] = (rval >> 16) & 0xff;
82
83 /* make sure it's local and unicast */
84 enetaddr[0] = (enetaddr[0] | 0x02) & ~0x01;
85}
86#endif
87
Ben Warrendd354792008-06-23 22:57:27 -070088/*
89 * CPU and board-specific Ethernet initializations. Aliased function
90 * signals caller to move on
91 */
92static int __def_eth_init(bd_t *bis)
93{
94 return -1;
95}
Peter Tyserf9a109b2009-04-20 11:08:46 -050096int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
97int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
Ben Warrendd354792008-06-23 22:57:27 -070098
Rafal Jaworowskif85b6072007-12-27 18:19:02 +010099#ifdef CONFIG_API
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100100static struct {
101 uchar data[PKTSIZE];
102 int length;
103} eth_rcv_bufs[PKTBUFSRX];
104
Joe Hershberger66c73852012-05-15 08:59:07 +0000105static unsigned int eth_rcv_current, eth_rcv_last;
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100106#endif
107
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000108static struct eth_device *eth_devices;
109struct eth_device *eth_current;
wdenkc6097192002-11-03 00:24:07 +0000110
Ben Warrend7fb9bc2010-07-29 12:56:11 -0700111struct eth_device *eth_get_dev_by_name(const char *devname)
Marian Balakowicz63ff0042005-10-28 22:30:33 +0200112{
113 struct eth_device *dev, *target_dev;
114
Helmut Raiger7e7f9032011-08-22 00:17:17 +0000115 BUG_ON(devname == NULL);
116
Marian Balakowicz63ff0042005-10-28 22:30:33 +0200117 if (!eth_devices)
118 return NULL;
119
120 dev = eth_devices;
121 target_dev = NULL;
122 do {
123 if (strcmp(devname, dev->name) == 0) {
124 target_dev = dev;
125 break;
126 }
127 dev = dev->next;
128 } while (dev != eth_devices);
129
130 return target_dev;
131}
132
Andy Fleming9e569862009-02-11 15:07:24 -0600133struct eth_device *eth_get_dev_by_index(int index)
134{
135 struct eth_device *dev, *target_dev;
Andy Fleming9e569862009-02-11 15:07:24 -0600136
137 if (!eth_devices)
138 return NULL;
139
140 dev = eth_devices;
141 target_dev = NULL;
142 do {
Michael Wallefea7dca2011-10-27 11:31:35 +0000143 if (dev->index == index) {
Andy Fleming9e569862009-02-11 15:07:24 -0600144 target_dev = dev;
145 break;
146 }
147 dev = dev->next;
Andy Fleming9e569862009-02-11 15:07:24 -0600148 } while (dev != eth_devices);
149
150 return target_dev;
151}
152
Joe Hershberger66c73852012-05-15 08:59:07 +0000153int eth_get_dev_index(void)
wdenkc6097192002-11-03 00:24:07 +0000154{
Joe Hershberger66c73852012-05-15 08:59:07 +0000155 if (!eth_current)
Michael Wallefea7dca2011-10-27 11:31:35 +0000156 return -1;
wdenkc6097192002-11-03 00:24:07 +0000157
Michael Wallefea7dca2011-10-27 11:31:35 +0000158 return eth_current->index;
wdenkc6097192002-11-03 00:24:07 +0000159}
160
Simon Glass89d48362011-02-16 11:14:33 -0800161static void eth_current_changed(void)
wdenkc6097192002-11-03 00:24:07 +0000162{
Mike Frysingere2a53452011-10-02 10:01:27 +0000163 char *act = getenv("ethact");
164 /* update current ethernet name */
165 if (eth_current) {
166 if (act == NULL || strcmp(act, eth_current->name) != 0)
167 setenv("ethact", eth_current->name);
Simon Glass89d48362011-02-16 11:14:33 -0800168 }
Mike Frysingere2a53452011-10-02 10:01:27 +0000169 /*
170 * remove the variable completely if there is no active
171 * interface
172 */
173 else if (act != NULL)
174 setenv("ethact", NULL);
Simon Glass89d48362011-02-16 11:14:33 -0800175}
176
Simon Glass7616e782011-06-13 16:13:10 -0700177int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
178 int eth_number)
179{
180 unsigned char env_enetaddr[6];
181 int ret = 0;
182
Eric Miao69376642012-01-18 22:56:33 +0000183 eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr);
Simon Glass7616e782011-06-13 16:13:10 -0700184
185 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
186 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
Joe Hershberger66c73852012-05-15 08:59:07 +0000187 memcmp(dev->enetaddr, env_enetaddr, 6)) {
Simon Glass7616e782011-06-13 16:13:10 -0700188 printf("\nWarning: %s MAC addresses don't match:\n",
189 dev->name);
190 printf("Address in SROM is %pM\n",
191 dev->enetaddr);
192 printf("Address in environment is %pM\n",
193 env_enetaddr);
194 }
195
196 memcpy(dev->enetaddr, env_enetaddr, 6);
Rob Herringc88ef3c2012-04-14 18:06:49 +0000197 } else if (is_valid_ether_addr(dev->enetaddr)) {
198 eth_setenv_enetaddr_by_index(base_name, eth_number,
199 dev->enetaddr);
200 printf("\nWarning: %s using MAC address from net device\n",
201 dev->name);
Simon Glass7616e782011-06-13 16:13:10 -0700202 }
203
204 if (dev->write_hwaddr &&
Benoît Thébaudeau460f9492012-08-10 07:56:21 +0000205 !eth_mac_skip(eth_number)) {
206 if (!is_valid_ether_addr(dev->enetaddr))
207 return -1;
208
Simon Glass7616e782011-06-13 16:13:10 -0700209 ret = dev->write_hwaddr(dev);
Benoît Thébaudeau460f9492012-08-10 07:56:21 +0000210 }
Simon Glass7616e782011-06-13 16:13:10 -0700211
212 return ret;
213}
214
Simon Glass89d48362011-02-16 11:14:33 -0800215int eth_register(struct eth_device *dev)
216{
217 struct eth_device *d;
Joe Hershberger66c73852012-05-15 08:59:07 +0000218 static int index;
Michal Simek58c583b2011-08-29 23:30:13 +0000219
Mike Frysingerf6add132011-11-10 14:11:04 +0000220 assert(strlen(dev->name) < sizeof(dev->name));
Michal Simek58c583b2011-08-29 23:30:13 +0000221
Simon Glass89d48362011-02-16 11:14:33 -0800222 if (!eth_devices) {
223 eth_current = eth_devices = dev;
224 eth_current_changed();
wdenkc6097192002-11-03 00:24:07 +0000225 } else {
Joe Hershberger66c73852012-05-15 08:59:07 +0000226 for (d = eth_devices; d->next != eth_devices; d = d->next)
Detlev Zundelaba4b692010-03-31 17:56:08 +0200227 ;
wdenkc6097192002-11-03 00:24:07 +0000228 d->next = dev;
229 }
230
231 dev->state = ETH_STATE_INIT;
232 dev->next = eth_devices;
Michael Wallefea7dca2011-10-27 11:31:35 +0000233 dev->index = index++;
wdenkc6097192002-11-03 00:24:07 +0000234
235 return 0;
236}
237
Vincent Palatine7e982d2012-01-09 08:32:36 +0000238int eth_unregister(struct eth_device *dev)
239{
240 struct eth_device *cur;
241
242 /* No device */
243 if (!eth_devices)
244 return -1;
245
246 for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
247 cur = cur->next)
248 ;
249
250 /* Device not found */
251 if (cur->next != dev)
252 return -1;
253
254 cur->next = dev->next;
255
256 if (eth_devices == dev)
257 eth_devices = dev->next == eth_devices ? NULL : dev->next;
258
259 if (eth_current == dev) {
260 eth_current = eth_devices;
261 eth_current_changed();
262 }
263
264 return 0;
265}
266
Mike Frysingerde301222012-04-04 18:53:41 +0000267static void eth_env_init(bd_t *bis)
268{
269 const char *s;
270
271 if ((s = getenv("bootfile")) != NULL)
272 copy_filename(BootFile, s, sizeof(BootFile));
273}
274
wdenkc6097192002-11-03 00:24:07 +0000275int eth_initialize(bd_t *bis)
276{
Michael Wallefea7dca2011-10-27 11:31:35 +0000277 int num_devices = 0;
wdenkc6097192002-11-03 00:24:07 +0000278 eth_devices = NULL;
279 eth_current = NULL;
280
Simon Glass770605e2012-02-13 13:51:18 +0000281 bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
Alexey Brodkin27ee59a2014-01-10 19:58:11 +0400282#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
Marian Balakowiczd9785c12005-11-30 18:06:04 +0100283 miiphy_init();
284#endif
Andy Fleming5f184712011-04-08 02:10:27 -0500285
286#ifdef CONFIG_PHYLIB
287 phy_init();
288#endif
289
Mike Frysingerde301222012-04-04 18:53:41 +0000290 eth_env_init(bis);
291
Ben Warren8ad25bf2010-08-31 23:05:04 -0700292 /*
293 * If board-specific initialization exists, call it.
294 * If not, call a CPU-specific one
295 */
296 if (board_eth_init != __def_eth_init) {
297 if (board_eth_init(bis) < 0)
298 printf("Board Net Initialization Failed\n");
299 } else if (cpu_eth_init != __def_eth_init) {
300 if (cpu_eth_init(bis) < 0)
301 printf("CPU Net Initialization Failed\n");
302 } else
303 printf("Net Initialization Skipped\n");
Marian Balakowiczd9785c12005-11-30 18:06:04 +0100304
wdenkc6097192002-11-03 00:24:07 +0000305 if (!eth_devices) {
Joe Hershberger66c73852012-05-15 08:59:07 +0000306 puts("No ethernet found.\n");
Simon Glass770605e2012-02-13 13:51:18 +0000307 bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
wdenkc6097192002-11-03 00:24:07 +0000308 } else {
309 struct eth_device *dev = eth_devices;
Joe Hershberger66c73852012-05-15 08:59:07 +0000310 char *ethprime = getenv("ethprime");
wdenkc6097192002-11-03 00:24:07 +0000311
Simon Glass770605e2012-02-13 13:51:18 +0000312 bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
wdenkc6097192002-11-03 00:24:07 +0000313 do {
Michael Wallefea7dca2011-10-27 11:31:35 +0000314 if (dev->index)
Joe Hershberger66c73852012-05-15 08:59:07 +0000315 puts(", ");
wdenkc6097192002-11-03 00:24:07 +0000316
317 printf("%s", dev->name);
318
Joe Hershberger66c73852012-05-15 08:59:07 +0000319 if (ethprime && strcmp(dev->name, ethprime) == 0) {
wdenkc6097192002-11-03 00:24:07 +0000320 eth_current = dev;
Joe Hershberger66c73852012-05-15 08:59:07 +0000321 puts(" [PRIME]");
wdenkc6097192002-11-03 00:24:07 +0000322 }
323
Mike Frysinger1384f3b2010-06-09 22:10:48 -0400324 if (strchr(dev->name, ' '))
Joe Hershberger66c73852012-05-15 08:59:07 +0000325 puts("\nWarning: eth device name has a space!"
326 "\n");
Mike Frysinger1384f3b2010-06-09 22:10:48 -0400327
Michael Wallefea7dca2011-10-27 11:31:35 +0000328 if (eth_write_hwaddr(dev, "eth", dev->index))
Philip Balistera9a730e2011-09-07 01:57:48 +0000329 puts("\nWarning: failed to set MAC address\n");
wdenkc6097192002-11-03 00:24:07 +0000330
wdenkc6097192002-11-03 00:24:07 +0000331 dev = dev->next;
Michael Wallefea7dca2011-10-27 11:31:35 +0000332 num_devices++;
Joe Hershberger66c73852012-05-15 08:59:07 +0000333 } while (dev != eth_devices);
wdenkc6097192002-11-03 00:24:07 +0000334
Simon Glass89d48362011-02-16 11:14:33 -0800335 eth_current_changed();
Joe Hershberger66c73852012-05-15 08:59:07 +0000336 putc('\n');
wdenkc6097192002-11-03 00:24:07 +0000337 }
338
Michael Wallefea7dca2011-10-27 11:31:35 +0000339 return num_devices;
wdenkc6097192002-11-03 00:24:07 +0000340}
341
David Updegraff53a5c422007-06-11 10:41:07 -0500342#ifdef CONFIG_MCAST_TFTP
343/* Multicast.
344 * mcast_addr: multicast ipaddr from which multicast Mac is made
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200345 * join: 1=join, 0=leave.
David Updegraff53a5c422007-06-11 10:41:07 -0500346 */
Joe Hershberger66c73852012-05-15 08:59:07 +0000347int eth_mcast_join(IPaddr_t mcast_ip, u8 join)
David Updegraff53a5c422007-06-11 10:41:07 -0500348{
Joe Hershberger66c73852012-05-15 08:59:07 +0000349 u8 mcast_mac[6];
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200350 if (!eth_current || !eth_current->mcast)
David Updegraff53a5c422007-06-11 10:41:07 -0500351 return -1;
352 mcast_mac[5] = htonl(mcast_ip) & 0xff;
353 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
354 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
355 mcast_mac[2] = 0x5e;
356 mcast_mac[1] = 0x0;
357 mcast_mac[0] = 0x1;
358 return eth_current->mcast(eth_current, mcast_mac, join);
359}
360
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200361/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
362 * and this is the ethernet-crc method needed for TSEC -- and perhaps
David Updegraff53a5c422007-06-11 10:41:07 -0500363 * some other adapter -- hash tables
364 */
365#define CRCPOLY_LE 0xedb88320
Joe Hershberger66c73852012-05-15 08:59:07 +0000366u32 ether_crc(size_t len, unsigned char const *p)
David Updegraff53a5c422007-06-11 10:41:07 -0500367{
368 int i;
369 u32 crc;
370 crc = ~0;
371 while (len--) {
372 crc ^= *p++;
373 for (i = 0; i < 8; i++)
374 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
375 }
376 /* an reverse the bits, cuz of way they arrive -- last-first */
377 crc = (crc >> 16) | (crc << 16);
378 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
379 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
380 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
381 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
382 return crc;
383}
384
385#endif
386
wdenkc6097192002-11-03 00:24:07 +0000387
388int eth_init(bd_t *bis)
389{
Mike Frysinger86848a72009-07-15 21:31:28 -0400390 struct eth_device *old_current, *dev;
wdenkc6097192002-11-03 00:24:07 +0000391
Stefan Roese6bc11382008-03-04 17:40:41 +0100392 if (!eth_current) {
Joe Hershberger66c73852012-05-15 08:59:07 +0000393 puts("No ethernet found.\n");
Upakul Barkakaty505be872007-11-29 12:16:13 +0530394 return -1;
Stefan Roese6bc11382008-03-04 17:40:41 +0100395 }
wdenkc6097192002-11-03 00:24:07 +0000396
Mike Frysinger86848a72009-07-15 21:31:28 -0400397 /* Sync environment with network devices */
Mike Frysinger86848a72009-07-15 21:31:28 -0400398 dev = eth_devices;
399 do {
400 uchar env_enetaddr[6];
401
Michael Wallefea7dca2011-10-27 11:31:35 +0000402 if (eth_getenv_enetaddr_by_index("eth", dev->index,
Simon Glass7616e782011-06-13 16:13:10 -0700403 env_enetaddr))
Mike Frysinger86848a72009-07-15 21:31:28 -0400404 memcpy(dev->enetaddr, env_enetaddr, 6);
405
Mike Frysinger86848a72009-07-15 21:31:28 -0400406 dev = dev->next;
407 } while (dev != eth_devices);
408
wdenkc6097192002-11-03 00:24:07 +0000409 old_current = eth_current;
410 do {
Robin Getz0ebf04c2009-07-23 03:01:03 -0400411 debug("Trying %s\n", eth_current->name);
wdenkc6097192002-11-03 00:24:07 +0000412
Joe Hershberger66c73852012-05-15 08:59:07 +0000413 if (eth_current->init(eth_current, bis) >= 0) {
wdenkc6097192002-11-03 00:24:07 +0000414 eth_current->state = ETH_STATE_ACTIVE;
415
Upakul Barkakaty505be872007-11-29 12:16:13 +0530416 return 0;
wdenkc6097192002-11-03 00:24:07 +0000417 }
Robin Getz0ebf04c2009-07-23 03:01:03 -0400418 debug("FAIL\n");
wdenkc6097192002-11-03 00:24:07 +0000419
420 eth_try_another(0);
421 } while (old_current != eth_current);
422
Upakul Barkakaty505be872007-11-29 12:16:13 +0530423 return -1;
wdenkc6097192002-11-03 00:24:07 +0000424}
425
426void eth_halt(void)
427{
428 if (!eth_current)
429 return;
430
431 eth_current->halt(eth_current);
432
433 eth_current->state = ETH_STATE_PASSIVE;
434}
435
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000436int eth_send(void *packet, int length)
wdenkc6097192002-11-03 00:24:07 +0000437{
438 if (!eth_current)
439 return -1;
440
441 return eth_current->send(eth_current, packet, length);
442}
443
444int eth_rx(void)
445{
446 if (!eth_current)
447 return -1;
448
449 return eth_current->recv(eth_current);
450}
451
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100452#ifdef CONFIG_API
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000453static void eth_save_packet(void *packet, int length)
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100454{
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000455 char *p = packet;
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100456 int i;
457
458 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
459 return;
460
461 if (PKTSIZE < length)
462 return;
463
464 for (i = 0; i < length; i++)
465 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
466
467 eth_rcv_bufs[eth_rcv_last].length = length;
468 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
469}
470
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000471int eth_receive(void *packet, int length)
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100472{
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000473 char *p = packet;
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100474 void *pp = push_packet;
475 int i;
476
477 if (eth_rcv_current == eth_rcv_last) {
478 push_packet = eth_save_packet;
479 eth_rx();
480 push_packet = pp;
481
482 if (eth_rcv_current == eth_rcv_last)
483 return -1;
484 }
485
Michael Walle46c07bc2012-06-22 11:24:28 +0000486 length = min(eth_rcv_bufs[eth_rcv_current].length, length);
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100487
488 for (i = 0; i < length; i++)
489 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
490
491 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
492 return length;
493}
494#endif /* CONFIG_API */
495
wdenkc6097192002-11-03 00:24:07 +0000496void eth_try_another(int first_restart)
497{
Joe Hershberger66c73852012-05-15 08:59:07 +0000498 static struct eth_device *first_failed;
Remy Bohmerc650e1b2011-02-19 20:15:14 +0100499 char *ethrotate;
Matthias Fuchse1692572008-01-17 07:45:05 +0100500
501 /*
502 * Do not rotate between network interfaces when
503 * 'ethrotate' variable is set to 'no'.
504 */
Joe Hershberger66c73852012-05-15 08:59:07 +0000505 ethrotate = getenv("ethrotate");
506 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
Matthias Fuchse1692572008-01-17 07:45:05 +0100507 return;
wdenkc6097192002-11-03 00:24:07 +0000508
509 if (!eth_current)
510 return;
511
Joe Hershberger66c73852012-05-15 08:59:07 +0000512 if (first_restart)
wdenkc6097192002-11-03 00:24:07 +0000513 first_failed = eth_current;
wdenkc6097192002-11-03 00:24:07 +0000514
515 eth_current = eth_current->next;
516
Simon Glass89d48362011-02-16 11:14:33 -0800517 eth_current_changed();
wdenka3d991b2004-04-15 21:48:45 +0000518
Joe Hershberger66c73852012-05-15 08:59:07 +0000519 if (first_failed == eth_current)
wdenkc6097192002-11-03 00:24:07 +0000520 NetRestartWrap = 1;
wdenkc6097192002-11-03 00:24:07 +0000521}
522
wdenka3d991b2004-04-15 21:48:45 +0000523void eth_set_current(void)
524{
Joe Hershberger66c73852012-05-15 08:59:07 +0000525 static char *act;
526 static int env_changed_id;
527 struct eth_device *old_current;
Heiko Schocher2f70c492009-02-10 09:38:52 +0100528 int env_id;
wdenka3d991b2004-04-15 21:48:45 +0000529
530 if (!eth_current) /* XXX no current */
531 return;
532
Heiko Schocher2f70c492009-02-10 09:38:52 +0100533 env_id = get_env_id();
534 if ((act == NULL) || (env_changed_id != env_id)) {
535 act = getenv("ethact");
536 env_changed_id = env_id;
537 }
wdenka3d991b2004-04-15 21:48:45 +0000538 if (act != NULL) {
539 old_current = eth_current;
540 do {
541 if (strcmp(eth_current->name, act) == 0)
542 return;
543 eth_current = eth_current->next;
544 } while (old_current != eth_current);
545 }
546
Simon Glass89d48362011-02-16 11:14:33 -0800547 eth_current_changed();
wdenka3d991b2004-04-15 21:48:45 +0000548}
wdenka3d991b2004-04-15 21:48:45 +0000549
Joe Hershberger66c73852012-05-15 08:59:07 +0000550char *eth_get_name(void)
wdenk5bb226e2003-11-17 21:14:37 +0000551{
Joe Hershberger66c73852012-05-15 08:59:07 +0000552 return eth_current ? eth_current->name : "unknown";
wdenk5bb226e2003-11-17 21:14:37 +0000553}