[people/ms/u-boot.git] / lib / efi_loader / efi_net.c

/*
 *  EFI application network access support
 *
 *  Copyright (c) 2016 Alexander Graf
 *
 *  SPDX-License-Identifier:     GPL-2.0+
 */

#include <common.h>
#include <efi_loader.h>
#include <inttypes.h>
#include <lcd.h>
#include <malloc.h>

DECLARE_GLOBAL_DATA_PTR;

static const efi_guid_t efi_net_guid = EFI_SIMPLE_NETWORK_GUID;
static const efi_guid_t efi_pxe_guid = EFI_PXE_GUID;
static struct efi_pxe_packet *dhcp_ack;
static bool new_rx_packet;
static void *new_tx_packet;
/*
 * The notification function of this event is called in every timer cycle
 * to check if a new network packet has been received.
 */
static struct efi_event *network_timer_event;
/*
 * This event is signaled when a packet has been received.
 */
static struct efi_event *wait_for_packet;

struct efi_net_obj {
	/* Generic EFI object parent class data */
	struct efi_object parent;
	/* EFI Interface callback struct for network */
	struct efi_simple_network net;
	struct efi_simple_network_mode net_mode;
	/* PXE struct to transmit dhcp data */
	struct efi_pxe pxe;
	struct efi_pxe_mode pxe_mode;
};

static efi_status_t EFIAPI efi_net_start(struct efi_simple_network *this)
{
	EFI_ENTRY("%p", this);

	return EFI_EXIT(EFI_SUCCESS);
}

static efi_status_t EFIAPI efi_net_stop(struct efi_simple_network *this)
{
	EFI_ENTRY("%p", this);

	return EFI_EXIT(EFI_SUCCESS);
}

static efi_status_t EFIAPI efi_net_initialize(struct efi_simple_network *this,
					      ulong extra_rx, ulong extra_tx)
{
	EFI_ENTRY("%p, %lx, %lx", this, extra_rx, extra_tx);

	eth_init();

	return EFI_EXIT(EFI_SUCCESS);
}

static efi_status_t EFIAPI efi_net_reset(struct efi_simple_network *this,
					 int extended_verification)
{
	EFI_ENTRY("%p, %x", this, extended_verification);

	return EFI_EXIT(EFI_SUCCESS);
}

static efi_status_t EFIAPI efi_net_shutdown(struct efi_simple_network *this)
{
	EFI_ENTRY("%p", this);

	return EFI_EXIT(EFI_SUCCESS);
}

static efi_status_t EFIAPI efi_net_receive_filters(
		struct efi_simple_network *this, u32 enable, u32 disable,
		int reset_mcast_filter, ulong mcast_filter_count,
		struct efi_mac_address *mcast_filter)
{
	EFI_ENTRY("%p, %x, %x, %x, %lx, %p", this, enable, disable,
		  reset_mcast_filter, mcast_filter_count, mcast_filter);

	return EFI_EXIT(EFI_UNSUPPORTED);
}

static efi_status_t EFIAPI efi_net_station_address(
		struct efi_simple_network *this, int reset,
		struct efi_mac_address *new_mac)
{
	EFI_ENTRY("%p, %x, %p", this, reset, new_mac);

	return EFI_EXIT(EFI_UNSUPPORTED);
}

static efi_status_t EFIAPI efi_net_statistics(struct efi_simple_network *this,
					      int reset, ulong *stat_size,
					      void *stat_table)
{
	EFI_ENTRY("%p, %x, %p, %p", this, reset, stat_size, stat_table);

	return EFI_EXIT(EFI_UNSUPPORTED);
}

static efi_status_t EFIAPI efi_net_mcastiptomac(struct efi_simple_network *this,
						int ipv6,
						struct efi_ip_address *ip,
						struct efi_mac_address *mac)
{
	EFI_ENTRY("%p, %x, %p, %p", this, ipv6, ip, mac);

	return EFI_EXIT(EFI_INVALID_PARAMETER);
}

static efi_status_t EFIAPI efi_net_nvdata(struct efi_simple_network *this,
					  int read_write, ulong offset,
					  ulong buffer_size, char *buffer)
{
	EFI_ENTRY("%p, %x, %lx, %lx, %p", this, read_write, offset, buffer_size,
		  buffer);

	return EFI_EXIT(EFI_UNSUPPORTED);
}

static efi_status_t EFIAPI efi_net_get_status(struct efi_simple_network *this,
					      u32 *int_status, void **txbuf)
{
	EFI_ENTRY("%p, %p, %p", this, int_status, txbuf);

	efi_timer_check();

	if (int_status) {
		/* We send packets synchronously, so nothing is outstanding */
		*int_status = EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
		if (new_rx_packet)
			*int_status |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
	}
	if (txbuf)
		*txbuf = new_tx_packet;

	new_tx_packet = NULL;

	return EFI_EXIT(EFI_SUCCESS);
}

static efi_status_t EFIAPI efi_net_transmit(struct efi_simple_network *this,
		size_t header_size, size_t buffer_size, void *buffer,
		struct efi_mac_address *src_addr,
		struct efi_mac_address *dest_addr, u16 *protocol)
{
	EFI_ENTRY("%p, %lu, %lu, %p, %p, %p, %p", this,
		  (unsigned long)header_size, (unsigned long)buffer_size,
		  buffer, src_addr, dest_addr, protocol);

	efi_timer_check();

	if (header_size) {
		/* We would need to create the header if header_size != 0 */
		return EFI_EXIT(EFI_INVALID_PARAMETER);
	}

#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
	/* Ethernet packets always fit, just bounce */
	memcpy(efi_bounce_buffer, buffer, buffer_size);
	net_send_packet(efi_bounce_buffer, buffer_size);
#else
	net_send_packet(buffer, buffer_size);
#endif

	new_tx_packet = buffer;

	return EFI_EXIT(EFI_SUCCESS);
}

static void efi_net_push(void *pkt, int len)
{
	new_rx_packet = true;
	wait_for_packet->is_signaled = true;
}

/*
 * Receive a packet from a network interface.
 *
 * This function implements the Receive service of the Simple Network Protocol.
 * See the UEFI spec for details.
 *
 * @this	the instance of the Simple Network Protocol
 * @header_size	size of the media header
 * @buffer_size	size of the buffer to receive the packet
 * @buffer	buffer to receive the packet
 * @src_addr	source MAC address
 * @dest_addr	destination MAC address
 * @protocol	protocol
 * @return	status code
 */
static efi_status_t EFIAPI efi_net_receive(struct efi_simple_network *this,
		size_t *header_size, size_t *buffer_size, void *buffer,
		struct efi_mac_address *src_addr,
		struct efi_mac_address *dest_addr, u16 *protocol)
{
	struct ethernet_hdr *eth_hdr;
	size_t hdr_size = sizeof(struct ethernet_hdr);
	u16 protlen;

	EFI_ENTRY("%p, %p, %p, %p, %p, %p, %p", this, header_size,
		  buffer_size, buffer, src_addr, dest_addr, protocol);

	efi_timer_check();

	if (!new_rx_packet)
		return EFI_EXIT(EFI_NOT_READY);
	/* Check that we at least received an Ethernet header */
	if (net_rx_packet_len < sizeof(struct ethernet_hdr)) {
		new_rx_packet = false;
		return EFI_EXIT(EFI_NOT_READY);
	}
	/* Fill export parameters */
	eth_hdr = (struct ethernet_hdr *)net_rx_packet;
	protlen = ntohs(eth_hdr->et_protlen);
	if (protlen == 0x8100) {
		hdr_size += 4;
		protlen = ntohs(*(u16 *)&net_rx_packet[hdr_size - 2]);
	}
	if (header_size)
		*header_size = hdr_size;
	if (dest_addr)
		memcpy(dest_addr, eth_hdr->et_dest, ARP_HLEN);
	if (src_addr)
		memcpy(src_addr, eth_hdr->et_src, ARP_HLEN);
	if (protocol)
		*protocol = protlen;
	if (*buffer_size < net_rx_packet_len) {
		/* Packet doesn't fit, try again with bigger buf */
		*buffer_size = net_rx_packet_len;
		return EFI_EXIT(EFI_BUFFER_TOO_SMALL);
	}
	/* Copy packet */
	memcpy(buffer, net_rx_packet, net_rx_packet_len);
	*buffer_size = net_rx_packet_len;
	new_rx_packet = false;

	return EFI_EXIT(EFI_SUCCESS);
}

void efi_net_set_dhcp_ack(void *pkt, int len)
{
	int maxsize = sizeof(*dhcp_ack);

	if (!dhcp_ack)
		dhcp_ack = malloc(maxsize);

	memcpy(dhcp_ack, pkt, min(len, maxsize));
}

/*
 * Check if a new network packet has been received.
 *
 * This notification function is called in every timer cycle.
 *
 * @event	the event for which this notification function is registered
 * @context	event context - not used in this function
 */
static void EFIAPI efi_network_timer_notify(struct efi_event *event,
					    void *context)
{
	EFI_ENTRY("%p, %p", event, context);

	if (!new_rx_packet) {
		push_packet = efi_net_push;
		eth_rx();
		push_packet = NULL;
	}
	EFI_EXIT(EFI_SUCCESS);
}

/* This gets called from do_bootefi_exec(). */
int efi_net_register(void)
{
	struct efi_net_obj *netobj;
	efi_status_t r;

	if (!eth_get_dev()) {
		/* No eth device active, don't expose any */
		return 0;
	}

	/* We only expose the "active" eth device, so one is enough */
	netobj = calloc(1, sizeof(*netobj));
	if (!netobj)
		goto out_of_memory;

	/* Hook net up to the device list */
	INIT_LIST_HEAD(&netobj->parent.protocols);
	list_add_tail(&netobj->parent.link, &efi_obj_list);

	/* Fill in object data */
	netobj->parent.handle = &netobj->net;
	r = efi_add_protocol(netobj->parent.handle, &efi_net_guid,
			     &netobj->net);
	if (r != EFI_SUCCESS)
		goto out_of_memory;
	r = efi_add_protocol(netobj->parent.handle, &efi_guid_device_path,
			     efi_dp_from_eth());
	if (r != EFI_SUCCESS)
		goto out_of_memory;
	r = efi_add_protocol(netobj->parent.handle, &efi_pxe_guid,
			     &netobj->pxe);
	if (r != EFI_SUCCESS)
		goto out_of_memory;
	netobj->net.revision = EFI_SIMPLE_NETWORK_PROTOCOL_REVISION;
	netobj->net.start = efi_net_start;
	netobj->net.stop = efi_net_stop;
	netobj->net.initialize = efi_net_initialize;
	netobj->net.reset = efi_net_reset;
	netobj->net.shutdown = efi_net_shutdown;
	netobj->net.receive_filters = efi_net_receive_filters;
	netobj->net.station_address = efi_net_station_address;
	netobj->net.statistics = efi_net_statistics;
	netobj->net.mcastiptomac = efi_net_mcastiptomac;
	netobj->net.nvdata = efi_net_nvdata;
	netobj->net.get_status = efi_net_get_status;
	netobj->net.transmit = efi_net_transmit;
	netobj->net.receive = efi_net_receive;
	netobj->net.mode = &netobj->net_mode;
	netobj->net_mode.state = EFI_NETWORK_STARTED;
	memcpy(netobj->net_mode.current_address.mac_addr, eth_get_ethaddr(), 6);
	netobj->net_mode.hwaddr_size = ARP_HLEN;
	netobj->net_mode.max_packet_size = PKTSIZE;

	netobj->pxe.mode = &netobj->pxe_mode;
	if (dhcp_ack)
		netobj->pxe_mode.dhcp_ack = *dhcp_ack;

	/*
	 * Create WaitForPacket event.
	 */
	r = efi_create_event(EVT_NOTIFY_WAIT, TPL_CALLBACK,
			     efi_network_timer_notify, NULL,
			     &wait_for_packet);
	if (r != EFI_SUCCESS) {
		printf("ERROR: Failed to register network event\n");
		return r;
	}
	netobj->net.wait_for_packet = wait_for_packet;
	/*
	 * Create a timer event.
	 *
	 * The notification function is used to check if a new network packet
	 * has been received.
	 */
	r = efi_create_event(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK,
			     efi_network_timer_notify, NULL,
			     &network_timer_event);
	if (r != EFI_SUCCESS) {
		printf("ERROR: Failed to register network event\n");
		return r;
	}
	/* Network is time critical, create event in every timer cyle */
	r = efi_set_timer(network_timer_event, EFI_TIMER_PERIODIC, 0);
	if (r != EFI_SUCCESS) {
		printf("ERROR: Failed to set network timer\n");
		return r;
	}

	return 0;
out_of_memory:
	printf("ERROR: Out of memory\n");
	return 1;
}
Commit	Line	Data
0efe1bcf AG	1	/*
	2	* EFI application network access support
	3	*
	4	* Copyright (c) 2016 Alexander Graf
	5	*
	6	* SPDX-License-Identifier: GPL-2.0+
	7	*/
	8
	9	#include <common.h>
	10	#include <efi_loader.h>
	11	#include <inttypes.h>
	12	#include <lcd.h>
	13	#include <malloc.h>
	14
	15	DECLARE_GLOBAL_DATA_PTR;
	16
	17	static const efi_guid_t efi_net_guid = EFI_SIMPLE_NETWORK_GUID;
	18	static const efi_guid_t efi_pxe_guid = EFI_PXE_GUID;
	19	static struct efi_pxe_packet *dhcp_ack;
	20	static bool new_rx_packet;
	21	static void *new_tx_packet;
a0549ef6 HS	22	/*
	23	* The notification function of this event is called in every timer cycle
	24	* to check if a new network packet has been received.
	25	*/
	26	static struct efi_event *network_timer_event;
e5c21603 HS	27	/*
	28	* This event is signaled when a packet has been received.
	29	*/
	30	static struct efi_event *wait_for_packet;
0efe1bcf AG	31
	32	struct efi_net_obj {
	33	/* Generic EFI object parent class data */
	34	struct efi_object parent;
	35	/* EFI Interface callback struct for network */
	36	struct efi_simple_network net;
	37	struct efi_simple_network_mode net_mode;
0efe1bcf AG	38	/* PXE struct to transmit dhcp data */
	39	struct efi_pxe pxe;
	40	struct efi_pxe_mode pxe_mode;
	41	};
	42
	43	static efi_status_t EFIAPI efi_net_start(struct efi_simple_network *this)
	44	{
	45	EFI_ENTRY("%p", this);
	46
	47	return EFI_EXIT(EFI_SUCCESS);
	48	}
	49
	50	static efi_status_t EFIAPI efi_net_stop(struct efi_simple_network *this)
	51	{
	52	EFI_ENTRY("%p", this);
	53
	54	return EFI_EXIT(EFI_SUCCESS);
	55	}
	56
	57	static efi_status_t EFIAPI efi_net_initialize(struct efi_simple_network *this,
	58	ulong extra_rx, ulong extra_tx)
	59	{
	60	EFI_ENTRY("%p, %lx, %lx", this, extra_rx, extra_tx);
	61
	62	eth_init();
	63
	64	return EFI_EXIT(EFI_SUCCESS);
	65	}
	66
	67	static efi_status_t EFIAPI efi_net_reset(struct efi_simple_network *this,
	68	int extended_verification)
	69	{
	70	EFI_ENTRY("%p, %x", this, extended_verification);
	71
	72	return EFI_EXIT(EFI_SUCCESS);
	73	}
	74
	75	static efi_status_t EFIAPI efi_net_shutdown(struct efi_simple_network *this)
	76	{
	77	EFI_ENTRY("%p", this);
	78
	79	return EFI_EXIT(EFI_SUCCESS);
	80	}
	81
	82	static efi_status_t EFIAPI efi_net_receive_filters(
	83	struct efi_simple_network *this, u32 enable, u32 disable,
	84	int reset_mcast_filter, ulong mcast_filter_count,
	85	struct efi_mac_address *mcast_filter)
	86	{
	87	EFI_ENTRY("%p, %x, %x, %x, %lx, %p", this, enable, disable,
	88	reset_mcast_filter, mcast_filter_count, mcast_filter);
	89
61da678c	90	return EFI_EXIT(EFI_UNSUPPORTED);
0efe1bcf AG	91	}
	92
	93	static efi_status_t EFIAPI efi_net_station_address(
	94	struct efi_simple_network *this, int reset,
	95	struct efi_mac_address *new_mac)
	96	{
	97	EFI_ENTRY("%p, %x, %p", this, reset, new_mac);
	98
61da678c	99	return EFI_EXIT(EFI_UNSUPPORTED);
0efe1bcf AG	100	}
	101
	102	static efi_status_t EFIAPI efi_net_statistics(struct efi_simple_network *this,
	103	int reset, ulong *stat_size,
	104	void *stat_table)
	105	{
	106	EFI_ENTRY("%p, %x, %p, %p", this, reset, stat_size, stat_table);
	107
61da678c	108	return EFI_EXIT(EFI_UNSUPPORTED);
0efe1bcf AG	109	}
	110
	111	static efi_status_t EFIAPI efi_net_mcastiptomac(struct efi_simple_network *this,
	112	int ipv6,
	113	struct efi_ip_address *ip,
	114	struct efi_mac_address *mac)
	115	{
	116	EFI_ENTRY("%p, %x, %p, %p", this, ipv6, ip, mac);
	117
	118	return EFI_EXIT(EFI_INVALID_PARAMETER);
	119	}
	120
	121	static efi_status_t EFIAPI efi_net_nvdata(struct efi_simple_network *this,
	122	int read_write, ulong offset,
	123	ulong buffer_size, char *buffer)
	124	{
	125	EFI_ENTRY("%p, %x, %lx, %lx, %p", this, read_write, offset, buffer_size,
	126	buffer);
	127
61da678c	128	return EFI_EXIT(EFI_UNSUPPORTED);
0efe1bcf AG	129	}
	130
	131	static efi_status_t EFIAPI efi_net_get_status(struct efi_simple_network *this,
	132	u32 int_status, void *txbuf)
	133	{
	134	EFI_ENTRY("%p, %p, %p", this, int_status, txbuf);
	135
891b3d90 HS	136	efi_timer_check();
	137
	138	if (int_status) {
	139	/* We send packets synchronously, so nothing is outstanding */
	140	*int_status = EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
	141	if (new_rx_packet)
	142	*int_status \|= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
	143	}
0efe1bcf AG	144	if (txbuf)
	145	*txbuf = new_tx_packet;
	146
	147	new_tx_packet = NULL;
	148
	149	return EFI_EXIT(EFI_SUCCESS);
	150	}
	151
	152	static efi_status_t EFIAPI efi_net_transmit(struct efi_simple_network *this,
8db174d6	153	size_t header_size, size_t buffer_size, void *buffer,
0efe1bcf AG	154	struct efi_mac_address *src_addr,
	155	struct efi_mac_address dest_addr, u16 protocol)
	156	{
8db174d6 HS	157	EFI_ENTRY("%p, %lu, %lu, %p, %p, %p, %p", this,
	158	(unsigned long)header_size, (unsigned long)buffer_size,
	159	buffer, src_addr, dest_addr, protocol);
0efe1bcf	160
a0549ef6 HS	161	efi_timer_check();
a0549ef6 HS	162
0efe1bcf AG	163	if (header_size) {
	164	/* We would need to create the header if header_size != 0 */
	165	return EFI_EXIT(EFI_INVALID_PARAMETER);
	166	}
	167
712cd298 AG	168	#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
	169	/* Ethernet packets always fit, just bounce */
	170	memcpy(efi_bounce_buffer, buffer, buffer_size);
	171	net_send_packet(efi_bounce_buffer, buffer_size);
	172	#else
0efe1bcf	173	net_send_packet(buffer, buffer_size);
712cd298 AG	174	#endif
712cd298 AG	175
0efe1bcf AG	176	new_tx_packet = buffer;
	177
	178	return EFI_EXIT(EFI_SUCCESS);
	179	}
	180
	181	static void efi_net_push(void *pkt, int len)
	182	{
	183	new_rx_packet = true;
e5c21603	184	wait_for_packet->is_signaled = true;
0efe1bcf AG	185	}
0efe1bcf AG	186
8db174d6 HS	187	/*
	188	* Receive a packet from a network interface.
	189	*
	190	* This function implements the Receive service of the Simple Network Protocol.
	191	* See the UEFI spec for details.
	192	*
	193	* @this the instance of the Simple Network Protocol
	194	* @header_size size of the media header
	195	* @buffer_size size of the buffer to receive the packet
	196	* @buffer buffer to receive the packet
	197	* @src_addr source MAC address
	198	* @dest_addr destination MAC address
	199	* @protocol protocol
	200	* @return status code
	201	*/
0efe1bcf	202	static efi_status_t EFIAPI efi_net_receive(struct efi_simple_network *this,
8db174d6	203	size_t header_size, size_t buffer_size, void *buffer,
0efe1bcf AG	204	struct efi_mac_address *src_addr,
	205	struct efi_mac_address dest_addr, u16 protocol)
	206	{
336d9dfc HS	207	struct ethernet_hdr *eth_hdr;
	208	size_t hdr_size = sizeof(struct ethernet_hdr);
	209	u16 protlen;
	210
0efe1bcf AG	211	EFI_ENTRY("%p, %p, %p, %p, %p, %p, %p", this, header_size,
	212	buffer_size, buffer, src_addr, dest_addr, protocol);
	213
a0549ef6	214	efi_timer_check();
0efe1bcf AG	215
	216	if (!new_rx_packet)
	217	return EFI_EXIT(EFI_NOT_READY);
336d9dfc HS	218	/* Check that we at least received an Ethernet header */
	219	if (net_rx_packet_len < sizeof(struct ethernet_hdr)) {
	220	new_rx_packet = false;
	221	return EFI_EXIT(EFI_NOT_READY);
	222	}
	223	/* Fill export parameters */
	224	eth_hdr = (struct ethernet_hdr *)net_rx_packet;
	225	protlen = ntohs(eth_hdr->et_protlen);
	226	if (protlen == 0x8100) {
	227	hdr_size += 4;
	228	protlen = ntohs((u16 )&net_rx_packet[hdr_size - 2]);
	229	}
	230	if (header_size)
	231	*header_size = hdr_size;
	232	if (dest_addr)
	233	memcpy(dest_addr, eth_hdr->et_dest, ARP_HLEN);
	234	if (src_addr)
	235	memcpy(src_addr, eth_hdr->et_src, ARP_HLEN);
	236	if (protocol)
	237	*protocol = protlen;
0efe1bcf AG	238	if (*buffer_size < net_rx_packet_len) {
	239	/* Packet doesn't fit, try again with bigger buf */
	240	*buffer_size = net_rx_packet_len;
	241	return EFI_EXIT(EFI_BUFFER_TOO_SMALL);
	242	}
336d9dfc	243	/* Copy packet */
0efe1bcf AG	244	memcpy(buffer, net_rx_packet, net_rx_packet_len);
	245	*buffer_size = net_rx_packet_len;
	246	new_rx_packet = false;
	247
	248	return EFI_EXIT(EFI_SUCCESS);
	249	}
	250
0efe1bcf AG	251	void efi_net_set_dhcp_ack(void *pkt, int len)
	252	{
	253	int maxsize = sizeof(*dhcp_ack);
	254
	255	if (!dhcp_ack)
	256	dhcp_ack = malloc(maxsize);
	257
	258	memcpy(dhcp_ack, pkt, min(len, maxsize));
	259	}
	260
a0549ef6 HS	261	/*
	262	* Check if a new network packet has been received.
	263	*
	264	* This notification function is called in every timer cycle.
	265	*
	266	* @event the event for which this notification function is registered
	267	* @context event context - not used in this function
	268	*/
	269	static void EFIAPI efi_network_timer_notify(struct efi_event *event,
	270	void *context)
	271	{
	272	EFI_ENTRY("%p, %p", event, context);
	273
	274	if (!new_rx_packet) {
	275	push_packet = efi_net_push;
	276	eth_rx();
	277	push_packet = NULL;
	278	}
	279	EFI_EXIT(EFI_SUCCESS);
	280	}
	281
0efe1bcf	282	/* This gets called from do_bootefi_exec(). */
95c5553e	283	int efi_net_register(void)
0efe1bcf AG	284	{
0efe1bcf AG	285	struct efi_net_obj *netobj;
a0549ef6	286	efi_status_t r;
0efe1bcf AG	287
	288	if (!eth_get_dev()) {
	289	/* No eth device active, don't expose any */
	290	return 0;
	291	}
	292
	293	/* We only expose the "active" eth device, so one is enough */
	294	netobj = calloc(1, sizeof(*netobj));
84d14568 HS	295	if (!netobj)
	296	goto out_of_memory;
	297
	298	/* Hook net up to the device list */
69fb6b1a	299	INIT_LIST_HEAD(&netobj->parent.protocols);
84d14568	300	list_add_tail(&netobj->parent.link, &efi_obj_list);
0efe1bcf AG	301
0efe1bcf AG	302	/* Fill in object data */
0efe1bcf	303	netobj->parent.handle = &netobj->net;
84d14568 HS	304	r = efi_add_protocol(netobj->parent.handle, &efi_net_guid,
	305	&netobj->net);
	306	if (r != EFI_SUCCESS)
	307	goto out_of_memory;
	308	r = efi_add_protocol(netobj->parent.handle, &efi_guid_device_path,
	309	efi_dp_from_eth());
	310	if (r != EFI_SUCCESS)
	311	goto out_of_memory;
	312	r = efi_add_protocol(netobj->parent.handle, &efi_pxe_guid,
	313	&netobj->pxe);
	314	if (r != EFI_SUCCESS)
	315	goto out_of_memory;
bdecf974	316	netobj->net.revision = EFI_SIMPLE_NETWORK_PROTOCOL_REVISION;
0efe1bcf AG	317	netobj->net.start = efi_net_start;
	318	netobj->net.stop = efi_net_stop;
	319	netobj->net.initialize = efi_net_initialize;
	320	netobj->net.reset = efi_net_reset;
	321	netobj->net.shutdown = efi_net_shutdown;
	322	netobj->net.receive_filters = efi_net_receive_filters;
	323	netobj->net.station_address = efi_net_station_address;
	324	netobj->net.statistics = efi_net_statistics;
	325	netobj->net.mcastiptomac = efi_net_mcastiptomac;
	326	netobj->net.nvdata = efi_net_nvdata;
	327	netobj->net.get_status = efi_net_get_status;
	328	netobj->net.transmit = efi_net_transmit;
	329	netobj->net.receive = efi_net_receive;
	330	netobj->net.mode = &netobj->net_mode;
	331	netobj->net_mode.state = EFI_NETWORK_STARTED;
0efe1bcf	332	memcpy(netobj->net_mode.current_address.mac_addr, eth_get_ethaddr(), 6);
5d4a5ea9	333	netobj->net_mode.hwaddr_size = ARP_HLEN;
0efe1bcf AG	334	netobj->net_mode.max_packet_size = PKTSIZE;
	335
	336	netobj->pxe.mode = &netobj->pxe_mode;
	337	if (dhcp_ack)
	338	netobj->pxe_mode.dhcp_ack = *dhcp_ack;
	339
e5c21603 HS	340	/*
	341	* Create WaitForPacket event.
	342	*/
	343	r = efi_create_event(EVT_NOTIFY_WAIT, TPL_CALLBACK,
	344	efi_network_timer_notify, NULL,
	345	&wait_for_packet);
	346	if (r != EFI_SUCCESS) {
	347	printf("ERROR: Failed to register network event\n");
	348	return r;
	349	}
	350	netobj->net.wait_for_packet = wait_for_packet;
a0549ef6 HS	351	/*
	352	* Create a timer event.
	353	*
	354	* The notification function is used to check if a new network packet
	355	* has been received.
	356	*/
	357	r = efi_create_event(EVT_TIMER \| EVT_NOTIFY_SIGNAL, TPL_CALLBACK,
	358	efi_network_timer_notify, NULL,
	359	&network_timer_event);
	360	if (r != EFI_SUCCESS) {
	361	printf("ERROR: Failed to register network event\n");
	362	return r;
	363	}
	364	/* Network is time critical, create event in every timer cyle */
	365	r = efi_set_timer(network_timer_event, EFI_TIMER_PERIODIC, 0);
	366	if (r != EFI_SUCCESS) {
	367	printf("ERROR: Failed to set network timer\n");
	368	return r;
	369	}
	370
0efe1bcf	371	return 0;
84d14568 HS	372	out_of_memory:
	373	printf("ERROR: Out of memory\n");
	374	return 1;
0efe1bcf	375	}