[J-u-boot.git] / net / eth_legacy.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2001-2015
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 * Joe Hershberger, National Instruments
 */

#include <common.h>
#include <bootstage.h>
#include <command.h>
#include <dm.h>
#include <env.h>
#include <log.h>
#include <net.h>
#include <phy.h>
#include <asm/global_data.h>
#include <linux/bug.h>
#include <linux/errno.h>
#include <net/pcap.h>
#include "eth_internal.h"

DECLARE_GLOBAL_DATA_PTR;

/*
 * CPU and board-specific Ethernet initializations.  Aliased function
 * signals caller to move on
 */
static int __def_eth_init(struct bd_info *bis)
{
	return -1;
}
int cpu_eth_init(struct bd_info *bis) __attribute__((weak, alias("__def_eth_init")));
int board_eth_init(struct bd_info *bis) __attribute__((weak, alias("__def_eth_init")));

#ifdef CONFIG_API
static struct {
	uchar data[PKTSIZE];
	int length;
} eth_rcv_bufs[PKTBUFSRX];

static unsigned int eth_rcv_current, eth_rcv_last;
#endif

static struct eth_device *eth_devices;
struct eth_device *eth_current;

void eth_set_current_to_next(void)
{
	eth_current = eth_current->next;
}

void eth_set_dev(struct eth_device *dev)
{
	eth_current = dev;
}

struct eth_device *eth_get_dev_by_name(const char *devname)
{
	struct eth_device *dev, *target_dev;

	BUG_ON(devname == NULL);

	if (!eth_devices)
		return NULL;

	dev = eth_devices;
	target_dev = NULL;
	do {
		if (strcmp(devname, dev->name) == 0) {
			target_dev = dev;
			break;
		}
		dev = dev->next;
	} while (dev != eth_devices);

	return target_dev;
}

struct eth_device *eth_get_dev_by_index(int index)
{
	struct eth_device *dev, *target_dev;

	if (!eth_devices)
		return NULL;

	dev = eth_devices;
	target_dev = NULL;
	do {
		if (dev->index == index) {
			target_dev = dev;
			break;
		}
		dev = dev->next;
	} while (dev != eth_devices);

	return target_dev;
}

int eth_get_dev_index(void)
{
	if (!eth_current)
		return -1;

	return eth_current->index;
}

static int on_ethaddr(const char *name, const char *value, enum env_op op,
	int flags)
{
	int index;
	struct eth_device *dev;

	if (!eth_devices)
		return 0;

	/* look for an index after "eth" */
	index = dectoul(name + 3, NULL);

	dev = eth_devices;
	do {
		if (dev->index == index) {
			switch (op) {
			case env_op_create:
			case env_op_overwrite:
				string_to_enetaddr(value, dev->enetaddr);
				eth_write_hwaddr(dev, "eth", dev->index);
				break;
			case env_op_delete:
				memset(dev->enetaddr, 0, ARP_HLEN);
			}
		}
		dev = dev->next;
	} while (dev != eth_devices);

	return 0;
}
U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);

int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
		   int eth_number)
{
	unsigned char env_enetaddr[ARP_HLEN];
	int ret = 0;

	eth_env_get_enetaddr_by_index(base_name, eth_number, env_enetaddr);

	if (!is_zero_ethaddr(env_enetaddr)) {
		if (!is_zero_ethaddr(dev->enetaddr) &&
		    memcmp(dev->enetaddr, env_enetaddr, ARP_HLEN)) {
			printf("\nWarning: %s MAC addresses don't match:\n",
			       dev->name);
			printf("Address in SROM is         %pM\n",
			       dev->enetaddr);
			printf("Address in environment is  %pM\n",
			       env_enetaddr);
		}

		memcpy(dev->enetaddr, env_enetaddr, ARP_HLEN);
	} else if (is_valid_ethaddr(dev->enetaddr)) {
		eth_env_set_enetaddr_by_index(base_name, eth_number,
					      dev->enetaddr);
	} else if (is_zero_ethaddr(dev->enetaddr)) {
#ifdef CONFIG_NET_RANDOM_ETHADDR
		net_random_ethaddr(dev->enetaddr);
		printf("\nWarning: %s (eth%d) using random MAC address - %pM\n",
		       dev->name, eth_number, dev->enetaddr);
		eth_env_set_enetaddr_by_index("eth", eth_number,
					      dev->enetaddr);
#else
		printf("\nError: %s address not set.\n",
		       dev->name);
		return -EINVAL;
#endif
	}

	if (dev->write_hwaddr && !eth_mac_skip(eth_number)) {
		if (!is_valid_ethaddr(dev->enetaddr)) {
			printf("\nError: %s address %pM illegal value\n",
			       dev->name, dev->enetaddr);
			return -EINVAL;
		}

		ret = dev->write_hwaddr(dev);
		if (ret)
			printf("\nWarning: %s failed to set MAC address\n",
			       dev->name);
	}

	return ret;
}

int eth_register(struct eth_device *dev)
{
	struct eth_device *d;
	static int index;

	assert(strlen(dev->name) < sizeof(dev->name));

	if (!eth_devices) {
		eth_devices = dev;
		eth_current = dev;
		eth_current_changed();
	} else {
		for (d = eth_devices; d->next != eth_devices; d = d->next)
			;
		d->next = dev;
	}

	dev->state = ETH_STATE_INIT;
	dev->next  = eth_devices;
	dev->index = index++;

	return 0;
}

int eth_unregister(struct eth_device *dev)
{
	struct eth_device *cur;

	/* No device */
	if (!eth_devices)
		return -ENODEV;

	for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
	     cur = cur->next)
		;

	/* Device not found */
	if (cur->next != dev)
		return -ENODEV;

	cur->next = dev->next;

	if (eth_devices == dev)
		eth_devices = dev->next == eth_devices ? NULL : dev->next;

	if (eth_current == dev) {
		eth_current = eth_devices;
		eth_current_changed();
	}

	return 0;
}

int eth_initialize(void)
{
	int num_devices = 0;

	eth_devices = NULL;
	eth_current = NULL;
	eth_common_init();
	/*
	 * If board-specific initialization exists, call it.
	 * If not, call a CPU-specific one
	 */
	if (board_eth_init != __def_eth_init) {
		if (board_eth_init(gd->bd) < 0)
			printf("Board Net Initialization Failed\n");
	} else if (cpu_eth_init != __def_eth_init) {
		if (cpu_eth_init(gd->bd) < 0)
			printf("CPU Net Initialization Failed\n");
	} else {
		printf("Net Initialization Skipped\n");
	}

	if (!eth_devices) {
		log_err("No ethernet found.\n");
		bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
	} else {
		struct eth_device *dev = eth_devices;
		char *ethprime = env_get("ethprime");

		bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
		do {
			if (dev->index)
				puts(", ");

			printf("%s", dev->name);

			if (ethprime && strcmp(dev->name, ethprime) == 0) {
				eth_current = dev;
				puts(" [PRIME]");
			}

			if (strchr(dev->name, ' '))
				puts("\nWarning: eth device name has a space!"
					"\n");

			eth_write_hwaddr(dev, "eth", dev->index);

			dev = dev->next;
			num_devices++;
		} while (dev != eth_devices);

		eth_current_changed();
		putc('\n');
	}

	return num_devices;
}

/* Multicast.
 * mcast_addr: multicast ipaddr from which multicast Mac is made
 * join: 1=join, 0=leave.
 */
int eth_mcast_join(struct in_addr mcast_ip, int join)
{
	u8 mcast_mac[ARP_HLEN];
	if (!eth_current || !eth_current->mcast)
		return -1;
	mcast_mac[5] = htonl(mcast_ip.s_addr) & 0xff;
	mcast_mac[4] = (htonl(mcast_ip.s_addr)>>8) & 0xff;
	mcast_mac[3] = (htonl(mcast_ip.s_addr)>>16) & 0x7f;
	mcast_mac[2] = 0x5e;
	mcast_mac[1] = 0x0;
	mcast_mac[0] = 0x1;
	return eth_current->mcast(eth_current, mcast_mac, join);
}

int eth_init(void)
{
	struct eth_device *old_current;

	if (!eth_current) {
		log_err("No ethernet found.\n");
		return -ENODEV;
	}

	old_current = eth_current;
	do {
		debug("Trying %s\n", eth_current->name);

		if (eth_current->init(eth_current, gd->bd) >= 0) {
			eth_current->state = ETH_STATE_ACTIVE;

			return 0;
		}
		debug("FAIL\n");

		eth_try_another(0);
	} while (old_current != eth_current);

	return -ETIMEDOUT;
}

void eth_halt(void)
{
	if (!eth_current)
		return;

	eth_current->halt(eth_current);

	eth_current->state = ETH_STATE_PASSIVE;
}

int eth_is_active(struct eth_device *dev)
{
	return dev && dev->state == ETH_STATE_ACTIVE;
}

int eth_send(void *packet, int length)
{
	int ret;

	if (!eth_current)
		return -ENODEV;

	ret = eth_current->send(eth_current, packet, length);
#if defined(CONFIG_CMD_PCAP)
	if (ret >= 0)
		pcap_post(packet, length, true);
#endif
	return ret;
}

int eth_rx(void)
{
	if (!eth_current)
		return -ENODEV;

	return eth_current->recv(eth_current);
}

#ifdef CONFIG_API
static void eth_save_packet(void *packet, int length)
{
	char *p = packet;
	int i;

	if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
		return;

	if (PKTSIZE < length)
		return;

	for (i = 0; i < length; i++)
		eth_rcv_bufs[eth_rcv_last].data[i] = p[i];

	eth_rcv_bufs[eth_rcv_last].length = length;
	eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
}

int eth_receive(void *packet, int length)
{
	char *p = packet;
	void *pp = push_packet;
	int i;

	if (eth_rcv_current == eth_rcv_last) {
		push_packet = eth_save_packet;
		eth_rx();
		push_packet = pp;

		if (eth_rcv_current == eth_rcv_last)
			return -1;
	}

	length = min(eth_rcv_bufs[eth_rcv_current].length, length);

	for (i = 0; i < length; i++)
		p[i] = eth_rcv_bufs[eth_rcv_current].data[i];

	eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
	return length;
}
#endif /* CONFIG_API */
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
c609719b	2	/*
05c3e68f	3	* (C) Copyright 2001-2015
c609719b	4	* Wolfgang Denk, DENX Software Engineering, [email protected].
05c3e68f	5	* Joe Hershberger, National Instruments
c609719b WD	6	*/
	7
	8	#include <common.h>
52f24238	9	#include <bootstage.h>
c609719b	10	#include <command.h>
2a64ada7	11	#include <dm.h>
9fb625ce	12	#include <env.h>
f7ae49fc	13	#include <log.h>
c609719b	14	#include <net.h>
5f184715	15	#include <phy.h>
401d1c4f	16	#include <asm/global_data.h>
eb41d8a1	17	#include <linux/bug.h>
1221ce45	18	#include <linux/errno.h>
3eaac630	19	#include <net/pcap.h>
818f91eb	20	#include "eth_internal.h"
c609719b	21
d2eaec60 JH	22	DECLARE_GLOBAL_DATA_PTR;
d2eaec60 JH	23
3bc42700 SG	24	/*
	25	* CPU and board-specific Ethernet initializations. Aliased function
	26	* signals caller to move on
	27	*/
b75d8dc5	28	static int __def_eth_init(struct bd_info *bis)
3bc42700 SG	29	{
	30	return -1;
	31	}
b75d8dc5 MY	32	int cpu_eth_init(struct bd_info *bis) __attribute__((weak, alias("__def_eth_init")));
b75d8dc5 MY	33	int board_eth_init(struct bd_info *bis) __attribute__((weak, alias("__def_eth_init")));
3bc42700	34
f85b6071	35	#ifdef CONFIG_API
f85b6071 RJ	36	static struct {
	37	uchar data[PKTSIZE];
	38	int length;
	39	} eth_rcv_bufs[PKTBUFSRX];
	40
66c7385a	41	static unsigned int eth_rcv_current, eth_rcv_last;
f85b6071 RJ	42	#endif
f85b6071 RJ	43
f8be7d65 JH	44	static struct eth_device *eth_devices;
f8be7d65 JH	45	struct eth_device *eth_current;
c609719b	46
8607a6bf	47	void eth_set_current_to_next(void)
84eb1fba JH	48	{
	49	eth_current = eth_current->next;
	50	}
	51
8607a6bf	52	void eth_set_dev(struct eth_device *dev)
e58780dc JH	53	{
	54	eth_current = dev;
	55	}
	56
d7fb9bcf	57	struct eth_device eth_get_dev_by_name(const char devname)
63ff004c MB	58	{
	59	struct eth_device dev, target_dev;
	60
7e7f903f HR	61	BUG_ON(devname == NULL);
7e7f903f HR	62
63ff004c MB	63	if (!eth_devices)
	64	return NULL;
	65
	66	dev = eth_devices;
	67	target_dev = NULL;
	68	do {
	69	if (strcmp(devname, dev->name) == 0) {
	70	target_dev = dev;
	71	break;
	72	}
	73	dev = dev->next;
	74	} while (dev != eth_devices);
	75
	76	return target_dev;
	77	}
	78
9e56986a AF	79	struct eth_device *eth_get_dev_by_index(int index)
	80	{
	81	struct eth_device dev, target_dev;
9e56986a AF	82
	83	if (!eth_devices)
	84	return NULL;
	85
	86	dev = eth_devices;
	87	target_dev = NULL;
	88	do {
fea7dcae	89	if (dev->index == index) {
9e56986a AF	90	target_dev = dev;
	91	break;
	92	}
	93	dev = dev->next;
9e56986a AF	94	} while (dev != eth_devices);
	95
	96	return target_dev;
	97	}
	98
66c7385a	99	int eth_get_dev_index(void)
c609719b	100	{
66c7385a	101	if (!eth_current)
fea7dcae	102	return -1;
c609719b	103
fea7dcae	104	return eth_current->index;
c609719b WD	105	}
c609719b WD	106
6e0d26c0 JH	107	static int on_ethaddr(const char name, const char value, enum env_op op,
	108	int flags)
	109	{
	110	int index;
	111	struct eth_device *dev;
	112
	113	if (!eth_devices)
	114	return 0;
	115
	116	/* look for an index after "eth" */
0b1284eb	117	index = dectoul(name + 3, NULL);
6e0d26c0 JH	118
	119	dev = eth_devices;
	120	do {
	121	if (dev->index == index) {
	122	switch (op) {
	123	case env_op_create:
	124	case env_op_overwrite:
fb8977c5	125	string_to_enetaddr(value, dev->enetaddr);
73d570a7	126	eth_write_hwaddr(dev, "eth", dev->index);
6e0d26c0 JH	127	break;
6e0d26c0 JH	128	case env_op_delete:
a40db6d5	129	memset(dev->enetaddr, 0, ARP_HLEN);
6e0d26c0 JH	130	}
6e0d26c0 JH	131	}
7aba0f2c	132	dev = dev->next;
6e0d26c0 JH	133	} while (dev != eth_devices);
	134
	135	return 0;
	136	}
	137	U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
	138
7616e785 SG	139	int eth_write_hwaddr(struct eth_device dev, const char base_name,
	140	int eth_number)
	141	{
a40db6d5	142	unsigned char env_enetaddr[ARP_HLEN];
7616e785 SG	143	int ret = 0;
7616e785 SG	144
35affd7a	145	eth_env_get_enetaddr_by_index(base_name, eth_number, env_enetaddr);
7616e785	146
0adb5b76 JH	147	if (!is_zero_ethaddr(env_enetaddr)) {
0adb5b76 JH	148	if (!is_zero_ethaddr(dev->enetaddr) &&
a40db6d5	149	memcmp(dev->enetaddr, env_enetaddr, ARP_HLEN)) {
7616e785	150	printf("\nWarning: %s MAC addresses don't match:\n",
ff819a3a	151	dev->name);
7616e785	152	printf("Address in SROM is %pM\n",
ff819a3a	153	dev->enetaddr);
7616e785	154	printf("Address in environment is %pM\n",
ff819a3a	155	env_enetaddr);
7616e785 SG	156	}
7616e785 SG	157
a40db6d5	158	memcpy(dev->enetaddr, env_enetaddr, ARP_HLEN);
0adb5b76	159	} else if (is_valid_ethaddr(dev->enetaddr)) {
fd1e959e SG	160	eth_env_set_enetaddr_by_index(base_name, eth_number,
fd1e959e SG	161	dev->enetaddr);
0adb5b76	162	} else if (is_zero_ethaddr(dev->enetaddr)) {
bef1014b JH	163	#ifdef CONFIG_NET_RANDOM_ETHADDR
	164	net_random_ethaddr(dev->enetaddr);
	165	printf("\nWarning: %s (eth%d) using random MAC address - %pM\n",
	166	dev->name, eth_number, dev->enetaddr);
381e6e54 MS	167	eth_env_set_enetaddr_by_index("eth", eth_number,
381e6e54 MS	168	dev->enetaddr);
bef1014b	169	#else
75d9a45c PM	170	printf("\nError: %s address not set.\n",
	171	dev->name);
	172	return -EINVAL;
bef1014b	173	#endif
7616e785 SG	174	}
7616e785 SG	175
75d9a45c	176	if (dev->write_hwaddr && !eth_mac_skip(eth_number)) {
0adb5b76	177	if (!is_valid_ethaddr(dev->enetaddr)) {
75d9a45c	178	printf("\nError: %s address %pM illegal value\n",
ff819a3a	179	dev->name, dev->enetaddr);
75d9a45c PM	180	return -EINVAL;
75d9a45c PM	181	}
460f949f	182
7616e785	183	ret = dev->write_hwaddr(dev);
75d9a45c	184	if (ret)
ff819a3a JH	185	printf("\nWarning: %s failed to set MAC address\n",
ff819a3a JH	186	dev->name);
460f949f	187	}
7616e785 SG	188
	189	return ret;
	190	}
	191
89d48367 SG	192	int eth_register(struct eth_device *dev)
	193	{
	194	struct eth_device *d;
66c7385a	195	static int index;
58c583b6	196
f6add132	197	assert(strlen(dev->name) < sizeof(dev->name));
58c583b6	198
89d48367	199	if (!eth_devices) {
ff819a3a JH	200	eth_devices = dev;
ff819a3a JH	201	eth_current = dev;
89d48367	202	eth_current_changed();
c609719b	203	} else {
66c7385a	204	for (d = eth_devices; d->next != eth_devices; d = d->next)
aba4b69d	205	;
c609719b WD	206	d->next = dev;
	207	}
	208
	209	dev->state = ETH_STATE_INIT;
	210	dev->next = eth_devices;
fea7dcae	211	dev->index = index++;
c609719b WD	212
	213	return 0;
	214	}
	215
e7e982d6 VP	216	int eth_unregister(struct eth_device *dev)
	217	{
	218	struct eth_device *cur;
	219
	220	/* No device */
	221	if (!eth_devices)
05324a48	222	return -ENODEV;
e7e982d6 VP	223
	224	for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
	225	cur = cur->next)
	226	;
	227
	228	/* Device not found */
	229	if (cur->next != dev)
05324a48	230	return -ENODEV;
e7e982d6 VP	231
	232	cur->next = dev->next;
	233
	234	if (eth_devices == dev)
	235	eth_devices = dev->next == eth_devices ? NULL : dev->next;
	236
	237	if (eth_current == dev) {
	238	eth_current = eth_devices;
	239	eth_current_changed();
	240	}
	241
	242	return 0;
	243	}
	244
d2eaec60	245	int eth_initialize(void)
c609719b	246	{
fea7dcae	247	int num_devices = 0;
3bc42700	248
c609719b WD	249	eth_devices = NULL;
c609719b WD	250	eth_current = NULL;
3bc42700	251	eth_common_init();
818f91eb SG	252	/*
	253	* If board-specific initialization exists, call it.
	254	* If not, call a CPU-specific one
	255	*/
	256	if (board_eth_init != __def_eth_init) {
	257	if (board_eth_init(gd->bd) < 0)
	258	printf("Board Net Initialization Failed\n");
	259	} else if (cpu_eth_init != __def_eth_init) {
	260	if (cpu_eth_init(gd->bd) < 0)
	261	printf("CPU Net Initialization Failed\n");
	262	} else {
	263	printf("Net Initialization Skipped\n");
	264	}
d9785c14	265
c609719b	266	if (!eth_devices) {
ad895913	267	log_err("No ethernet found.\n");
770605e4	268	bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
c609719b WD	269	} else {
c609719b WD	270	struct eth_device *dev = eth_devices;
00caae6d	271	char *ethprime = env_get("ethprime");
c609719b	272
770605e4	273	bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
c609719b	274	do {
fea7dcae	275	if (dev->index)
66c7385a	276	puts(", ");
c609719b WD	277
	278	printf("%s", dev->name);
	279
66c7385a	280	if (ethprime && strcmp(dev->name, ethprime) == 0) {
c609719b	281	eth_current = dev;
66c7385a	282	puts(" [PRIME]");
c609719b WD	283	}
c609719b WD	284
1384f3bb	285	if (strchr(dev->name, ' '))
66c7385a JH	286	puts("\nWarning: eth device name has a space!"
66c7385a JH	287	"\n");
1384f3bb	288
75d9a45c	289	eth_write_hwaddr(dev, "eth", dev->index);
c609719b	290
c609719b	291	dev = dev->next;
fea7dcae	292	num_devices++;
66c7385a	293	} while (dev != eth_devices);
c609719b	294
89d48367	295	eth_current_changed();
66c7385a	296	putc('\n');
c609719b WD	297	}
c609719b WD	298
fea7dcae	299	return num_devices;
c609719b WD	300	}
c609719b WD	301
53a5c424 DU	302	/* Multicast.
53a5c424 DU	303	* mcast_addr: multicast ipaddr from which multicast Mac is made
85eb5caf	304	* join: 1=join, 0=leave.
53a5c424	305	*/
049a95a7	306	int eth_mcast_join(struct in_addr mcast_ip, int join)
53a5c424	307	{
a40db6d5	308	u8 mcast_mac[ARP_HLEN];
85eb5caf	309	if (!eth_current \|\| !eth_current->mcast)
53a5c424	310	return -1;
049a95a7 JH	311	mcast_mac[5] = htonl(mcast_ip.s_addr) & 0xff;
	312	mcast_mac[4] = (htonl(mcast_ip.s_addr)>>8) & 0xff;
	313	mcast_mac[3] = (htonl(mcast_ip.s_addr)>>16) & 0x7f;
53a5c424 DU	314	mcast_mac[2] = 0x5e;
	315	mcast_mac[1] = 0x0;
	316	mcast_mac[0] = 0x1;
	317	return eth_current->mcast(eth_current, mcast_mac, join);
	318	}
	319
d2eaec60	320	int eth_init(void)
c609719b	321	{
6e0d26c0	322	struct eth_device *old_current;
c609719b	323
6bc11388	324	if (!eth_current) {
ad895913	325	log_err("No ethernet found.\n");
05324a48	326	return -ENODEV;
6bc11388	327	}
c609719b WD	328
	329	old_current = eth_current;
	330	do {
0ebf04c6	331	debug("Trying %s\n", eth_current->name);
c609719b	332
d2eaec60	333	if (eth_current->init(eth_current, gd->bd) >= 0) {
c609719b WD	334	eth_current->state = ETH_STATE_ACTIVE;
c609719b WD	335
505be87a	336	return 0;
c609719b	337	}
0ebf04c6	338	debug("FAIL\n");
c609719b WD	339
	340	eth_try_another(0);
	341	} while (old_current != eth_current);
	342
05324a48	343	return -ETIMEDOUT;
c609719b WD	344	}
	345
	346	void eth_halt(void)
	347	{
	348	if (!eth_current)
	349	return;
	350
	351	eth_current->halt(eth_current);
	352
	353	eth_current->state = ETH_STATE_PASSIVE;
	354	}
	355
eaa8a195 BN	356	int eth_is_active(struct eth_device *dev)
	357	{
	358	return dev && dev->state == ETH_STATE_ACTIVE;
	359	}
	360
db288a96	361	int eth_send(void *packet, int length)
c609719b	362	{
3eaac630 RF	363	int ret;
3eaac630 RF	364
c609719b	365	if (!eth_current)
05324a48	366	return -ENODEV;
c609719b	367
3eaac630 RF	368	ret = eth_current->send(eth_current, packet, length);
	369	#if defined(CONFIG_CMD_PCAP)
	370	if (ret >= 0)
c1ab7381	371	pcap_post(packet, length, true);
3eaac630 RF	372	#endif
3eaac630 RF	373	return ret;
c609719b WD	374	}
	375
	376	int eth_rx(void)
	377	{
	378	if (!eth_current)
05324a48	379	return -ENODEV;
c609719b WD	380
	381	return eth_current->recv(eth_current);
	382	}
	383
f85b6071	384	#ifdef CONFIG_API
db288a96	385	static void eth_save_packet(void *packet, int length)
f85b6071	386	{
db288a96	387	char *p = packet;
f85b6071 RJ	388	int i;
	389
	390	if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
	391	return;
	392
	393	if (PKTSIZE < length)
	394	return;
	395
	396	for (i = 0; i < length; i++)
	397	eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
	398
	399	eth_rcv_bufs[eth_rcv_last].length = length;
	400	eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
	401	}
	402
db288a96	403	int eth_receive(void *packet, int length)
f85b6071	404	{
db288a96	405	char *p = packet;
f85b6071 RJ	406	void *pp = push_packet;
	407	int i;
	408
	409	if (eth_rcv_current == eth_rcv_last) {
	410	push_packet = eth_save_packet;
	411	eth_rx();
	412	push_packet = pp;
	413
	414	if (eth_rcv_current == eth_rcv_last)
	415	return -1;
	416	}
	417
46c07bcf	418	length = min(eth_rcv_bufs[eth_rcv_current].length, length);
f85b6071 RJ	419
	420	for (i = 0; i < length; i++)
	421	p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
	422
	423	eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
	424	return length;
	425	}
	426	#endif /* CONFIG_API */