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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Simple network protocol
- * PXE base code protocol
- *
- * Copyright (c) 2016 Alexander Graf
- *
- * The simple network protocol has the following statuses and services
- * to move between them:
- *
- * Start(): EfiSimpleNetworkStopped -> EfiSimpleNetworkStarted
- * Initialize(): EfiSimpleNetworkStarted -> EfiSimpleNetworkInitialized
- * Shutdown(): EfiSimpleNetworkInitialized -> EfiSimpleNetworkStarted
- * Stop(): EfiSimpleNetworkStarted -> EfiSimpleNetworkStopped
- * Reset(): EfiSimpleNetworkInitialized -> EfiSimpleNetworkInitialized
- */
- #include <common.h>
- #include <efi_loader.h>
- #include <malloc.h>
- #include <net.h>
- static const efi_guid_t efi_net_guid = EFI_SIMPLE_NETWORK_PROTOCOL_GUID;
- static const efi_guid_t efi_pxe_base_code_protocol_guid =
- EFI_PXE_BASE_CODE_PROTOCOL_GUID;
- static struct efi_pxe_packet *dhcp_ack;
- static bool new_rx_packet;
- static void *new_tx_packet;
- static void *transmit_buffer;
- /*
- * 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 - EFI object representing a network interface
- *
- * @header: EFI object header
- * @net: simple network protocol interface
- * @net_mode: status of the network interface
- * @pxe: PXE base code protocol interface
- * @pxe_mode: status of the PXE base code protocol
- */
- struct efi_net_obj {
- struct efi_object header;
- struct efi_simple_network net;
- struct efi_simple_network_mode net_mode;
- struct efi_pxe_base_code_protocol pxe;
- struct efi_pxe_mode pxe_mode;
- };
- /*
- * efi_net_start() - start the network interface
- *
- * This function implements the Start service of the
- * EFI_SIMPLE_NETWORK_PROTOCOL. See the Unified Extensible Firmware Interface
- * (UEFI) specification for details.
- *
- * @this: pointer to the protocol instance
- * Return: status code
- */
- static efi_status_t EFIAPI efi_net_start(struct efi_simple_network *this)
- {
- efi_status_t ret = EFI_SUCCESS;
- EFI_ENTRY("%p", this);
- /* Check parameters */
- if (!this) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- if (this->mode->state != EFI_NETWORK_STOPPED) {
- ret = EFI_ALREADY_STARTED;
- } else {
- this->int_status = 0;
- wait_for_packet->is_signaled = false;
- this->mode->state = EFI_NETWORK_STARTED;
- }
- out:
- return EFI_EXIT(ret);
- }
- /*
- * efi_net_stop() - stop the network interface
- *
- * This function implements the Stop service of the
- * EFI_SIMPLE_NETWORK_PROTOCOL. See the Unified Extensible Firmware Interface
- * (UEFI) specification for details.
- *
- * @this: pointer to the protocol instance
- * Return: status code
- */
- static efi_status_t EFIAPI efi_net_stop(struct efi_simple_network *this)
- {
- efi_status_t ret = EFI_SUCCESS;
- EFI_ENTRY("%p", this);
- /* Check parameters */
- if (!this) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- if (this->mode->state == EFI_NETWORK_STOPPED) {
- ret = EFI_NOT_STARTED;
- } else {
- /* Disable hardware and put it into the reset state */
- eth_halt();
- this->mode->state = EFI_NETWORK_STOPPED;
- }
- out:
- return EFI_EXIT(ret);
- }
- /*
- * efi_net_initialize() - initialize the network interface
- *
- * This function implements the Initialize service of the
- * EFI_SIMPLE_NETWORK_PROTOCOL. See the Unified Extensible Firmware Interface
- * (UEFI) specification for details.
- *
- * @this: pointer to the protocol instance
- * @extra_rx: extra receive buffer to be allocated
- * @extra_tx: extra transmit buffer to be allocated
- * Return: status code
- */
- static efi_status_t EFIAPI efi_net_initialize(struct efi_simple_network *this,
- ulong extra_rx, ulong extra_tx)
- {
- int ret;
- efi_status_t r = EFI_SUCCESS;
- EFI_ENTRY("%p, %lx, %lx", this, extra_rx, extra_tx);
- /* Check parameters */
- if (!this) {
- r = EFI_INVALID_PARAMETER;
- goto out;
- }
- switch (this->mode->state) {
- case EFI_NETWORK_INITIALIZED:
- case EFI_NETWORK_STARTED:
- break;
- default:
- r = EFI_NOT_STARTED;
- goto out;
- }
- /* Setup packet buffers */
- net_init();
- /* Disable hardware and put it into the reset state */
- eth_halt();
- /* Set current device according to environment variables */
- eth_set_current();
- /* Get hardware ready for send and receive operations */
- ret = eth_init();
- if (ret < 0) {
- eth_halt();
- this->mode->state = EFI_NETWORK_STOPPED;
- r = EFI_DEVICE_ERROR;
- goto out;
- } else {
- this->int_status = 0;
- wait_for_packet->is_signaled = false;
- this->mode->state = EFI_NETWORK_INITIALIZED;
- }
- out:
- return EFI_EXIT(r);
- }
- /*
- * efi_net_reset() - reinitialize the network interface
- *
- * This function implements the Reset service of the
- * EFI_SIMPLE_NETWORK_PROTOCOL. See the Unified Extensible Firmware Interface
- * (UEFI) specification for details.
- *
- * @this: pointer to the protocol instance
- * @extended_verification: execute exhaustive verification
- * Return: status code
- */
- static efi_status_t EFIAPI efi_net_reset(struct efi_simple_network *this,
- int extended_verification)
- {
- efi_status_t ret;
- EFI_ENTRY("%p, %x", this, extended_verification);
- /* Check parameters */
- if (!this) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- switch (this->mode->state) {
- case EFI_NETWORK_INITIALIZED:
- break;
- case EFI_NETWORK_STOPPED:
- ret = EFI_NOT_STARTED;
- goto out;
- default:
- ret = EFI_DEVICE_ERROR;
- goto out;
- }
- this->mode->state = EFI_NETWORK_STARTED;
- ret = EFI_CALL(efi_net_initialize(this, 0, 0));
- out:
- return EFI_EXIT(ret);
- }
- /*
- * efi_net_shutdown() - shut down the network interface
- *
- * This function implements the Shutdown service of the
- * EFI_SIMPLE_NETWORK_PROTOCOL. See the Unified Extensible Firmware Interface
- * (UEFI) specification for details.
- *
- * @this: pointer to the protocol instance
- * Return: status code
- */
- static efi_status_t EFIAPI efi_net_shutdown(struct efi_simple_network *this)
- {
- efi_status_t ret = EFI_SUCCESS;
- EFI_ENTRY("%p", this);
- /* Check parameters */
- if (!this) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- switch (this->mode->state) {
- case EFI_NETWORK_INITIALIZED:
- break;
- case EFI_NETWORK_STOPPED:
- ret = EFI_NOT_STARTED;
- goto out;
- default:
- ret = EFI_DEVICE_ERROR;
- goto out;
- }
- eth_halt();
- this->int_status = 0;
- wait_for_packet->is_signaled = false;
- this->mode->state = EFI_NETWORK_STARTED;
- out:
- return EFI_EXIT(ret);
- }
- /*
- * efi_net_receive_filters() - mange multicast receive filters
- *
- * This function implements the ReceiveFilters service of the
- * EFI_SIMPLE_NETWORK_PROTOCOL. See the Unified Extensible Firmware Interface
- * (UEFI) specification for details.
- *
- * @this: pointer to the protocol instance
- * @enable: bit mask of receive filters to enable
- * @disable: bit mask of receive filters to disable
- * @reset_mcast_filter: true resets contents of the filters
- * @mcast_filter_count: number of hardware MAC addresses in the new filters list
- * @mcast_filter: list of new filters
- * Return: status code
- */
- 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);
- }
- /*
- * efi_net_station_address() - set the hardware MAC address
- *
- * This function implements the StationAddress service of the
- * EFI_SIMPLE_NETWORK_PROTOCOL. See the Unified Extensible Firmware Interface
- * (UEFI) specification for details.
- *
- * @this: pointer to the protocol instance
- * @reset: if true reset the address to default
- * @new_mac: new MAC address
- * Return: status code
- */
- 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);
- }
- /*
- * efi_net_statistics() - reset or collect statistics of the network interface
- *
- * This function implements the Statistics service of the
- * EFI_SIMPLE_NETWORK_PROTOCOL. See the Unified Extensible Firmware Interface
- * (UEFI) specification for details.
- *
- * @this: pointer to the protocol instance
- * @reset: if true, the statistics are reset
- * @stat_size: size of the statistics table
- * @stat_table: table to receive the statistics
- * Return: status code
- */
- 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);
- }
- /*
- * efi_net_mcastiptomac() - translate multicast IP address to MAC address
- *
- * This function implements the MCastIPtoMAC service of the
- * EFI_SIMPLE_NETWORK_PROTOCOL. See the Unified Extensible Firmware Interface
- * (UEFI) specification for details.
- *
- * @this: pointer to the protocol instance
- * @ipv6: true if the IP address is an IPv6 address
- * @ip: IP address
- * @mac: MAC address
- * Return: status code
- */
- 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_status_t ret = EFI_SUCCESS;
- EFI_ENTRY("%p, %x, %p, %p", this, ipv6, ip, mac);
- if (!this || !ip || !mac) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- if (ipv6) {
- ret = EFI_UNSUPPORTED;
- goto out;
- }
- /* Multi-cast addresses are in the range 224.0.0.0 - 239.255.255.255 */
- if ((ip->ip_addr[0] & 0xf0) != 0xe0) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- };
- switch (this->mode->state) {
- case EFI_NETWORK_INITIALIZED:
- case EFI_NETWORK_STARTED:
- break;
- default:
- ret = EFI_NOT_STARTED;
- goto out;
- }
- memset(mac, 0, sizeof(struct efi_mac_address));
- /*
- * Copy lower 23 bits of IPv4 multi-cast address
- * RFC 1112, RFC 7042 2.1.1.
- */
- mac->mac_addr[0] = 0x01;
- mac->mac_addr[1] = 0x00;
- mac->mac_addr[2] = 0x5E;
- mac->mac_addr[3] = ip->ip_addr[1] & 0x7F;
- mac->mac_addr[4] = ip->ip_addr[2];
- mac->mac_addr[5] = ip->ip_addr[3];
- out:
- return EFI_EXIT(ret);
- }
- /**
- * efi_net_nvdata() - read or write NVRAM
- *
- * This function implements the GetStatus service of the Simple Network
- * Protocol. See the UEFI spec for details.
- *
- * @this: the instance of the Simple Network Protocol
- * @read_write: true for read, false for write
- * @offset: offset in NVRAM
- * @buffer_size: size of buffer
- * @buffer: buffer
- * Return: status code
- */
- 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);
- }
- /**
- * efi_net_get_status() - get interrupt status
- *
- * This function implements the GetStatus service of the Simple Network
- * Protocol. See the UEFI spec for details.
- *
- * @this: the instance of the Simple Network Protocol
- * @int_status: interface status
- * @txbuf: transmission buffer
- */
- static efi_status_t EFIAPI efi_net_get_status(struct efi_simple_network *this,
- u32 *int_status, void **txbuf)
- {
- efi_status_t ret = EFI_SUCCESS;
- EFI_ENTRY("%p, %p, %p", this, int_status, txbuf);
- efi_timer_check();
- /* Check parameters */
- if (!this) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- switch (this->mode->state) {
- case EFI_NETWORK_STOPPED:
- ret = EFI_NOT_STARTED;
- goto out;
- case EFI_NETWORK_STARTED:
- ret = EFI_DEVICE_ERROR;
- goto out;
- default:
- break;
- }
- if (int_status) {
- *int_status = this->int_status;
- this->int_status = 0;
- }
- if (txbuf)
- *txbuf = new_tx_packet;
- new_tx_packet = NULL;
- out:
- return EFI_EXIT(ret);
- }
- /**
- * efi_net_transmit() - transmit a packet
- *
- * This function implements the Transmit 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 hardware MAC address
- * @dest_addr: destination hardware MAC address
- * @protocol: type of header to build
- * Return: status code
- */
- 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_status_t ret = EFI_SUCCESS;
- 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();
- /* Check parameters */
- if (!this || !buffer) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- /* We do not support jumbo packets */
- if (buffer_size > PKTSIZE_ALIGN) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- /* At least the IP header has to fit into the buffer */
- if (buffer_size < this->mode->media_header_size) {
- ret = EFI_BUFFER_TOO_SMALL;
- goto out;
- }
- /*
- * TODO:
- * Support VLANs. Use net_set_ether() for copying the header. Use a
- * U_BOOT_ENV_CALLBACK to update the media header size.
- */
- if (header_size) {
- struct ethernet_hdr *header = buffer;
- if (!dest_addr || !protocol ||
- header_size != this->mode->media_header_size) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- if (!src_addr)
- src_addr = &this->mode->current_address;
- memcpy(header->et_dest, dest_addr, ARP_HLEN);
- memcpy(header->et_src, src_addr, ARP_HLEN);
- header->et_protlen = htons(*protocol);
- }
- switch (this->mode->state) {
- case EFI_NETWORK_STOPPED:
- ret = EFI_NOT_STARTED;
- goto out;
- case EFI_NETWORK_STARTED:
- ret = EFI_DEVICE_ERROR;
- goto out;
- default:
- break;
- }
- /* Ethernet packets always fit, just bounce */
- memcpy(transmit_buffer, buffer, buffer_size);
- net_send_packet(transmit_buffer, buffer_size);
- new_tx_packet = buffer;
- this->int_status |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
- out:
- return EFI_EXIT(ret);
- }
- /**
- * efi_net_receive() - 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)
- {
- efi_status_t ret = EFI_SUCCESS;
- 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);
- /* Execute events */
- efi_timer_check();
- /* Check parameters */
- if (!this || !buffer || !buffer_size) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- switch (this->mode->state) {
- case EFI_NETWORK_STOPPED:
- ret = EFI_NOT_STARTED;
- goto out;
- case EFI_NETWORK_STARTED:
- ret = EFI_DEVICE_ERROR;
- goto out;
- default:
- break;
- }
- if (!new_rx_packet) {
- ret = EFI_NOT_READY;
- goto out;
- }
- /* 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 buffer */
- *buffer_size = net_rx_packet_len;
- ret = EFI_BUFFER_TOO_SMALL;
- goto out;
- }
- /* Copy packet */
- memcpy(buffer, net_rx_packet, net_rx_packet_len);
- *buffer_size = net_rx_packet_len;
- new_rx_packet = 0;
- this->int_status &= ~EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
- out:
- return EFI_EXIT(ret);
- }
- /**
- * efi_net_set_dhcp_ack() - take note of a selected DHCP IP address
- *
- * This function is called by dhcp_handler().
- *
- * @pkt: packet received by dhcp_handler()
- * @len: length of the packet received
- */
- 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));
- }
- /**
- * efi_net_push() - callback for received network packet
- *
- * This function is called when a network packet is received by eth_rx().
- *
- * @pkt: network packet
- * @len: length
- */
- static void efi_net_push(void *pkt, int len)
- {
- new_rx_packet = true;
- }
- /**
- * efi_network_timer_notify() - 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)
- {
- struct efi_simple_network *this = (struct efi_simple_network *)context;
- EFI_ENTRY("%p, %p", event, context);
- /*
- * Some network drivers do not support calling eth_rx() before
- * initialization.
- */
- if (!this || this->mode->state != EFI_NETWORK_INITIALIZED)
- goto out;
- if (!new_rx_packet) {
- push_packet = efi_net_push;
- eth_rx();
- push_packet = NULL;
- if (new_rx_packet) {
- /* Check that we at least received an Ethernet header */
- if (net_rx_packet_len >=
- sizeof(struct ethernet_hdr)) {
- this->int_status |=
- EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
- wait_for_packet->is_signaled = true;
- } else {
- new_rx_packet = 0;
- }
- }
- }
- out:
- EFI_EXIT(EFI_SUCCESS);
- }
- static efi_status_t EFIAPI efi_pxe_base_code_start(
- struct efi_pxe_base_code_protocol *this,
- u8 use_ipv6)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_stop(
- struct efi_pxe_base_code_protocol *this)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_dhcp(
- struct efi_pxe_base_code_protocol *this,
- u8 sort_offers)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_discover(
- struct efi_pxe_base_code_protocol *this,
- u16 type, u16 *layer, u8 bis,
- struct efi_pxe_base_code_discover_info *info)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_mtftp(
- struct efi_pxe_base_code_protocol *this,
- u32 operation, void *buffer_ptr,
- u8 overwrite, efi_uintn_t *buffer_size,
- struct efi_ip_address server_ip, char *filename,
- struct efi_pxe_base_code_mtftp_info *info,
- u8 dont_use_buffer)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_udp_write(
- struct efi_pxe_base_code_protocol *this,
- u16 op_flags, struct efi_ip_address *dest_ip,
- u16 *dest_port,
- struct efi_ip_address *gateway_ip,
- struct efi_ip_address *src_ip, u16 *src_port,
- efi_uintn_t *header_size, void *header_ptr,
- efi_uintn_t *buffer_size, void *buffer_ptr)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_udp_read(
- struct efi_pxe_base_code_protocol *this,
- u16 op_flags, struct efi_ip_address *dest_ip,
- u16 *dest_port, struct efi_ip_address *src_ip,
- u16 *src_port, efi_uintn_t *header_size,
- void *header_ptr, efi_uintn_t *buffer_size,
- void *buffer_ptr)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_set_ip_filter(
- struct efi_pxe_base_code_protocol *this,
- struct efi_pxe_base_code_filter *new_filter)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_arp(
- struct efi_pxe_base_code_protocol *this,
- struct efi_ip_address *ip_addr,
- struct efi_mac_address *mac_addr)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_set_parameters(
- struct efi_pxe_base_code_protocol *this,
- u8 *new_auto_arp, u8 *new_send_guid,
- u8 *new_ttl, u8 *new_tos,
- u8 *new_make_callback)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_set_station_ip(
- struct efi_pxe_base_code_protocol *this,
- struct efi_ip_address *new_station_ip,
- struct efi_ip_address *new_subnet_mask)
- {
- return EFI_UNSUPPORTED;
- }
- static efi_status_t EFIAPI efi_pxe_base_code_set_packets(
- struct efi_pxe_base_code_protocol *this,
- u8 *new_dhcp_discover_valid,
- u8 *new_dhcp_ack_received,
- u8 *new_proxy_offer_received,
- u8 *new_pxe_discover_valid,
- u8 *new_pxe_reply_received,
- u8 *new_pxe_bis_reply_received,
- EFI_PXE_BASE_CODE_PACKET *new_dchp_discover,
- EFI_PXE_BASE_CODE_PACKET *new_dhcp_acc,
- EFI_PXE_BASE_CODE_PACKET *new_proxy_offer,
- EFI_PXE_BASE_CODE_PACKET *new_pxe_discover,
- EFI_PXE_BASE_CODE_PACKET *new_pxe_reply,
- EFI_PXE_BASE_CODE_PACKET *new_pxe_bis_reply)
- {
- return EFI_UNSUPPORTED;
- }
- /**
- * efi_net_register() - register the simple network protocol
- *
- * This gets called from do_bootefi_exec().
- */
- efi_status_t efi_net_register(void)
- {
- struct efi_net_obj *netobj = NULL;
- efi_status_t r;
- if (!eth_get_dev()) {
- /* No network device active, don't expose any */
- return EFI_SUCCESS;
- }
- /* We only expose the "active" network device, so one is enough */
- netobj = calloc(1, sizeof(*netobj));
- if (!netobj)
- goto out_of_resources;
- /* Allocate an aligned transmit buffer */
- transmit_buffer = calloc(1, PKTSIZE_ALIGN + PKTALIGN);
- if (!transmit_buffer)
- goto out_of_resources;
- transmit_buffer = (void *)ALIGN((uintptr_t)transmit_buffer, PKTALIGN);
- /* Hook net up to the device list */
- efi_add_handle(&netobj->header);
- /* Fill in object data */
- r = efi_add_protocol(&netobj->header, &efi_net_guid,
- &netobj->net);
- if (r != EFI_SUCCESS)
- goto failure_to_add_protocol;
- r = efi_add_protocol(&netobj->header, &efi_guid_device_path,
- efi_dp_from_eth());
- if (r != EFI_SUCCESS)
- goto failure_to_add_protocol;
- r = efi_add_protocol(&netobj->header, &efi_pxe_base_code_protocol_guid,
- &netobj->pxe);
- if (r != EFI_SUCCESS)
- goto failure_to_add_protocol;
- 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_STOPPED;
- memcpy(netobj->net_mode.current_address.mac_addr, eth_get_ethaddr(), 6);
- netobj->net_mode.hwaddr_size = ARP_HLEN;
- netobj->net_mode.media_header_size = ETHER_HDR_SIZE;
- netobj->net_mode.max_packet_size = PKTSIZE;
- netobj->net_mode.if_type = ARP_ETHER;
- netobj->pxe.revision = EFI_PXE_BASE_CODE_PROTOCOL_REVISION;
- netobj->pxe.start = efi_pxe_base_code_start;
- netobj->pxe.stop = efi_pxe_base_code_stop;
- netobj->pxe.dhcp = efi_pxe_base_code_dhcp;
- netobj->pxe.discover = efi_pxe_base_code_discover;
- netobj->pxe.mtftp = efi_pxe_base_code_mtftp;
- netobj->pxe.udp_write = efi_pxe_base_code_udp_write;
- netobj->pxe.udp_read = efi_pxe_base_code_udp_read;
- netobj->pxe.set_ip_filter = efi_pxe_base_code_set_ip_filter;
- netobj->pxe.arp = efi_pxe_base_code_arp;
- netobj->pxe.set_parameters = efi_pxe_base_code_set_parameters;
- netobj->pxe.set_station_ip = efi_pxe_base_code_set_station_ip;
- netobj->pxe.set_packets = efi_pxe_base_code_set_packets;
- 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, 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.
- *
- * iPXE is running at TPL_CALLBACK most of the time. Use a higher TPL.
- */
- r = efi_create_event(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_NOTIFY,
- efi_network_timer_notify, &netobj->net, 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 cycle */
- 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 EFI_SUCCESS;
- failure_to_add_protocol:
- printf("ERROR: Failure to add protocol\n");
- return r;
- out_of_resources:
- free(netobj);
- /* free(transmit_buffer) not needed yet */
- printf("ERROR: Out of memory\n");
- return EFI_OUT_OF_RESOURCES;
- }
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