efi_net.c should only [un]install protocols, leaving the
actual implementation to efi_simple_network.c and efi_pxe.c.
Signed-off-by: Adriano Cordova <adriano.cord...@canonical.com>
---
include/efi_api.h | 28 +-
include/efi_loader.h | 10 +-
lib/efi_loader/net/Makefile | 2 +
lib/efi_loader/net/efi_net.c | 1038 +----------------------
lib/efi_loader/net/efi_pxe.c | 190 +++++
lib/efi_loader/net/efi_simple_network.c | 880 +++++++++++++++++++
lib/efi_selftest/efi_selftest_snp.c | 4 +-
7 files changed, 1142 insertions(+), 1010 deletions(-)
create mode 100644 lib/efi_loader/net/efi_pxe.c
create mode 100644 lib/efi_loader/net/efi_simple_network.c
diff --git a/include/efi_api.h b/include/efi_api.h
index eb61eafa028..b20d639fbea 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -1519,36 +1519,36 @@ struct efi_simple_network_mode {
/* revision of the simple network protocol */
#define EFI_SIMPLE_NETWORK_PROTOCOL_REVISION 0x00010000
-struct efi_simple_network {
+struct efi_simple_network_protocol {
u64 revision;
- efi_status_t (EFIAPI *start)(struct efi_simple_network *this);
- efi_status_t (EFIAPI *stop)(struct efi_simple_network *this);
- efi_status_t (EFIAPI *initialize)(struct efi_simple_network *this,
+ efi_status_t (EFIAPI *start)(struct efi_simple_network_protocol *this);
+ efi_status_t (EFIAPI *stop)(struct efi_simple_network_protocol *this);
+ efi_status_t (EFIAPI *initialize)(struct efi_simple_network_protocol
*this,
ulong extra_rx, ulong extra_tx);
- efi_status_t (EFIAPI *reset)(struct efi_simple_network *this,
+ efi_status_t (EFIAPI *reset)(struct efi_simple_network_protocol *this,
int extended_verification);
- efi_status_t (EFIAPI *shutdown)(struct efi_simple_network *this);
- efi_status_t (EFIAPI *receive_filters)(struct efi_simple_network *this,
+ efi_status_t (EFIAPI *shutdown)(struct efi_simple_network_protocol
*this);
+ efi_status_t (EFIAPI *receive_filters)(struct
efi_simple_network_protocol *this,
u32 enable, u32 disable, int reset_mcast_filter,
ulong mcast_filter_count,
struct efi_mac_address *mcast_filter);
- efi_status_t (EFIAPI *station_address)(struct efi_simple_network *this,
+ efi_status_t (EFIAPI *station_address)(struct
efi_simple_network_protocol *this,
int reset, struct efi_mac_address *new_mac);
- efi_status_t (EFIAPI *statistics)(struct efi_simple_network *this,
+ efi_status_t (EFIAPI *statistics)(struct efi_simple_network_protocol
*this,
int reset, ulong *stat_size, void *stat_table);
- efi_status_t (EFIAPI *mcastiptomac)(struct efi_simple_network *this,
+ efi_status_t (EFIAPI *mcastiptomac)(struct efi_simple_network_protocol
*this,
int ipv6, struct efi_ip_address *ip,
struct efi_mac_address *mac);
- efi_status_t (EFIAPI *nvdata)(struct efi_simple_network *this,
+ efi_status_t (EFIAPI *nvdata)(struct efi_simple_network_protocol *this,
int read_write, ulong offset, ulong buffer_size,
char *buffer);
- efi_status_t (EFIAPI *get_status)(struct efi_simple_network *this,
+ efi_status_t (EFIAPI *get_status)(struct efi_simple_network_protocol
*this,
u32 *int_status, void **txbuf);
- efi_status_t (EFIAPI *transmit)(struct efi_simple_network *this,
+ efi_status_t (EFIAPI *transmit)(struct efi_simple_network_protocol
*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 (EFIAPI *receive)(struct efi_simple_network *this,
+ efi_status_t (EFIAPI *receive)(struct efi_simple_network_protocol *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);
diff --git a/include/efi_loader.h b/include/efi_loader.h
index 5c1244824f3..cc90bdf6a3a 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -329,8 +329,6 @@ extern const efi_guid_t efi_guid_host_dev;
#endif
/* GUID of the EFI_BLOCK_IO_PROTOCOL */
extern const efi_guid_t efi_block_io_guid;
-/* GUID of the EFI_SIMPLE_NETWORK_PROTOCOL */
-extern const efi_guid_t efi_net_guid;
extern const efi_guid_t efi_global_variable_guid;
extern const efi_guid_t efi_guid_console_control;
extern const efi_guid_t efi_guid_device_path;
@@ -661,9 +659,13 @@ efi_status_t efi_gop_register(void);
/* Called by bootefi to make the network interface available */
efi_status_t efi_net_register(struct udevice *dev);
efi_status_t efi_net_do_start(struct udevice *dev);
-/* Called by efi_net_register to make the ip4 config2 protocol available */
+/* Called by efi_net_register to install EFI_SIMPLE_NETWORK_PROTOCOL */
+efi_status_t efi_simple_network_install(const efi_handle_t handle, struct
udevice *dev);
+/* Called by efi_net_register to install EFI_PXE_BASE_CODE_PROTOCOL */
+efi_status_t efi_pxe_install(const efi_handle_t handle, struct efi_pxe_packet
*dhcp_ack);
+/* Called by efi_net_register to install EFI_IP4_CONFIG2_PROTOCOL */
efi_status_t efi_ip4_config2_install(const efi_handle_t handle);
-/* Called by efi_net_register to make the http protocol available */
+/* Called by efi_net_register to install EFI_HTTP_SERVICE_BINDING_PROTOCOL */
efi_status_t efi_http_install(const efi_handle_t handle);
/* Called by bootefi to make the watchdog available */
efi_status_t efi_watchdog_register(void);
diff --git a/lib/efi_loader/net/Makefile b/lib/efi_loader/net/Makefile
index 75131877e30..d024f1818d9 100644
--- a/lib/efi_loader/net/Makefile
+++ b/lib/efi_loader/net/Makefile
@@ -1,3 +1,5 @@
obj-y += efi_net.o
+obj-y += efi_simple_network.o
+obj-y += efi_pxe.o
obj-$(CONFIG_EFI_IP4_CONFIG2_PROTOCOL) += efi_ip4_config2.o
obj-$(CONFIG_EFI_HTTP_PROTOCOL) += efi_http.o
\ No newline at end of file
diff --git a/lib/efi_loader/net/efi_net.c b/lib/efi_loader/net/efi_net.c
index 40db80f4726..a7ceef4cbba 100644
--- a/lib/efi_loader/net/efi_net.c
+++ b/lib/efi_loader/net/efi_net.c
@@ -1,18 +1,8 @@
// 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
*/
#define LOG_CATEGORY LOGC_EFI
@@ -28,11 +18,12 @@
#define MAX_NUM_DHCP_ENTRIES 10
#define MAX_NUM_DP_ENTRIES 10
-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;
+#if IS_ENABLED(CONFIG_EFI_HTTP_PROTOCOL)
static const efi_guid_t efi_http_service_binding_guid =
EFI_HTTP_SERVICE_BINDING_PROTOCOL_GUID;
+#endif
struct dp_entry {
struct efi_device_path *net_dp;
@@ -71,39 +62,12 @@ static int next_dhcp_entry;
*
* @header: EFI object header
* @dev: net udevice
- * @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
- * @new_tx_packet: new transmit packet
- * @transmit_buffer: transmit buffer
- * @receive_buffer: array of receive buffers
- * @receive_lengths: array of lengths for received packets
- * @rx_packet_idx: index of the current receive packet
- * @rx_packet_num: number of received packets
- * @wait_for_packet: signaled when a packet has been received
- * @network_timer_event: event to check for new network packets.
- * @efi_seq_num: sequence number of the EFI net object.
*/
struct efi_net_obj {
struct efi_object header;
struct udevice *dev;
- 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;
- void *new_tx_packet;
- void *transmit_buffer;
- uchar **receive_buffer;
- size_t *receive_lengths;
- int rx_packet_idx;
- int rx_packet_num;
- struct efi_event *wait_for_packet;
- struct efi_event *network_timer_event;
- int efi_seq_num;
};
-static int curr_efi_net_obj;
static struct efi_net_obj *net_objs[MAX_EFI_NET_OBJS];
/**
@@ -120,641 +84,6 @@ static bool efi_netobj_is_active(struct efi_net_obj
*netobj)
return true;
}
-/*
- * efi_netobj_from_snp() - get efi_net_obj from simple network protocol
- *
- *
- * @snp: pointer to the simple network protocol
- * Return: pointer to efi_net_obj, NULL on error
- */
-static struct efi_net_obj *efi_netobj_from_snp(struct efi_simple_network *snp)
-{
- int i;
-
- for (i = 0; i < MAX_EFI_NET_OBJS; i++) {
- if (net_objs[i] && &net_objs[i]->net == snp) {
- // Do not register duplicate devices
- return net_objs[i];
- }
- }
- return NULL;
-}
-
-/*
- * 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;
- struct efi_net_obj *nt;
-
- EFI_ENTRY("%p", this);
- /* Check parameters */
- if (!this) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
-
- nt = efi_netobj_from_snp(this);
-
- if (this->mode->state != EFI_NETWORK_STOPPED) {
- ret = EFI_ALREADY_STARTED;
- } else {
- this->int_status = 0;
- nt->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;
- struct efi_net_obj *nt;
-
- EFI_ENTRY("%p", this);
-
- /* Check parameters */
- if (!this) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
-
- nt = efi_netobj_from_snp(this);
-
- if (this->mode->state == EFI_NETWORK_STOPPED) {
- ret = EFI_NOT_STARTED;
- } else {
- /* Disable hardware and put it into the reset state */
- eth_set_dev(nt->dev);
- env_set("ethact", eth_get_name());
- eth_halt();
- /* Clear cache of packets */
- nt->rx_packet_num = 0;
- 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;
- struct efi_net_obj *nt;
-
- EFI_ENTRY("%p, %lx, %lx", this, extra_rx, extra_tx);
-
- /* Check parameters */
- if (!this) {
- r = EFI_INVALID_PARAMETER;
- goto out;
- }
- nt = efi_netobj_from_snp(this);
-
- 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();
- /* Clear cache of packets */
- nt->rx_packet_num = 0;
- /* Set the net device corresponding to the efi net object */
- eth_set_dev(nt->dev);
- env_set("ethact", eth_get_name());
- /* Get hardware ready for send and receive operations */
- ret = eth_start_udev(nt->dev);
- if (ret < 0) {
- eth_halt();
- this->mode->state = EFI_NETWORK_STOPPED;
- r = EFI_DEVICE_ERROR;
- goto out;
- } else {
- this->int_status = 0;
- nt->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;
- struct efi_net_obj *nt;
-
- EFI_ENTRY("%p", this);
-
- /* Check parameters */
- if (!this) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
- nt = efi_netobj_from_snp(this);
-
- 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_set_dev(nt->dev);
- env_set("ethact", eth_get_name());
- eth_halt();
-
- this->int_status = 0;
- nt->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;
- struct efi_net_obj *nt;
-
- EFI_ENTRY("%p, %p, %p", this, int_status, txbuf);
-
- efi_timer_check();
-
- /* Check parameters */
- if (!this) {
- ret = EFI_INVALID_PARAMETER;
- goto out;
- }
-
- nt = efi_netobj_from_snp(this);
-
- 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 = nt->new_tx_packet;
-
- nt->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;
- struct efi_net_obj *nt;
-
- 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;
- }
-
- nt = efi_netobj_from_snp(this);
-
- /* 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;
- }
-
- eth_set_dev(nt->dev);
- env_set("ethact", eth_get_name());
-
- /* Ethernet packets always fit, just bounce */
- memcpy(nt->transmit_buffer, buffer, buffer_size);
- net_send_packet(nt->transmit_buffer, buffer_size);
-
- nt->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;
- struct efi_net_obj *nt;
-
- 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;
- }
-
- nt = efi_netobj_from_snp(this);
-
- 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 (!nt->rx_packet_num) {
- ret = EFI_NOT_READY;
- goto out;
- }
- /* Fill export parameters */
- eth_hdr = (struct ethernet_hdr *)nt->receive_buffer[nt->rx_packet_idx];
- protlen = ntohs(eth_hdr->et_protlen);
- if (protlen == 0x8100) {
- hdr_size += 4;
- protlen = ntohs(*(u16
*)&nt->receive_buffer[nt->rx_packet_idx][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 < nt->receive_lengths[nt->rx_packet_idx]) {
- /* Packet doesn't fit, try again with bigger buffer */
- *buffer_size = nt->receive_lengths[nt->rx_packet_idx];
- ret = EFI_BUFFER_TOO_SMALL;
- goto out;
- }
- /* Copy packet */
- memcpy(buffer, nt->receive_buffer[nt->rx_packet_idx],
- nt->receive_lengths[nt->rx_packet_idx]);
- *buffer_size = nt->receive_lengths[nt->rx_packet_idx];
- nt->rx_packet_idx = (nt->rx_packet_idx + 1) % ETH_PACKETS_BATCH_RECV;
- nt->rx_packet_num--;
- if (nt->rx_packet_num)
- nt->wait_for_packet->is_signaled = true;
- else
- 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
*
@@ -765,7 +94,10 @@ out:
*/
void efi_net_set_dhcp_ack(void *pkt, int len)
{
+ efi_status_t r = EFI_SUCCESS;
struct efi_pxe_packet **dhcp_ack;
+ struct efi_handler *phandler;
+ struct efi_pxe_base_code_protocol *pxe;
struct udevice *dev;
int i;
@@ -791,200 +123,17 @@ void efi_net_set_dhcp_ack(void *pkt, int len)
for (i = 0; i < MAX_EFI_NET_OBJS; i++) {
if (net_objs[i] && net_objs[i]->dev == dev) {
- net_objs[i]->pxe_mode.dhcp_ack = **dhcp_ack;
- }
- }
-}
-
-/**
- * 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)
-{
- int rx_packet_next;
- struct efi_net_obj *nt;
-
- nt = net_objs[curr_efi_net_obj];
- if (!nt)
- return;
-
- /* Check that we at least received an Ethernet header */
- if (len < sizeof(struct ethernet_hdr))
- return;
-
- /* Check that the buffer won't overflow */
- if (len > PKTSIZE_ALIGN)
- return;
-
- /* Can't store more than pre-alloced buffer */
- if (nt->rx_packet_num >= ETH_PACKETS_BATCH_RECV)
- return;
-
- rx_packet_next = (nt->rx_packet_idx + nt->rx_packet_num) %
- ETH_PACKETS_BATCH_RECV;
- memcpy(nt->receive_buffer[rx_packet_next], pkt, len);
- nt->receive_lengths[rx_packet_next] = len;
-
- nt->rx_packet_num++;
-}
-
-/**
- * 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;
- struct efi_net_obj *nt;
-
- 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;
-
- nt = efi_netobj_from_snp(this);
- curr_efi_net_obj = nt->efi_seq_num;
-
- if (!nt->rx_packet_num) {
- eth_set_dev(nt->dev);
- env_set("ethact", eth_get_name());
- push_packet = efi_net_push;
- eth_rx();
- push_packet = NULL;
- if (nt->rx_packet_num) {
- this->int_status |=
- EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
- nt->wait_for_packet->is_signaled = true;
+ phandler = NULL;
+ r = efi_search_protocol(&net_objs[i]->header,
+
&efi_pxe_base_code_protocol_guid,
+ &phandler);
+ if (r == EFI_SUCCESS && phandler) {
+ pxe = phandler->protocol_interface;
+ pxe->mode->dhcp_ack = **dhcp_ack;
+ }
+ break;
}
}
-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;
}
/**
@@ -1066,6 +215,10 @@ efi_status_t efi_net_do_start(struct udevice *dev)
efi_status_t r = EFI_SUCCESS;
struct efi_net_obj *netobj;
struct efi_device_path *net_dp;
+#if IS_ENABLED(CONFIG_EFI_HTTP_PROTOCOL)
+ struct efi_handler *phandler;
+ struct efi_pxe_base_code_protocol *pxe;
+#endif
int i;
netobj = NULL;
@@ -1097,17 +250,24 @@ efi_status_t efi_net_do_start(struct udevice *dev)
if (r != EFI_SUCCESS)
return r;
set_addr:
-#ifdef CONFIG_EFI_HTTP_PROTOCOL
+#if IS_ENABLED(CONFIG_EFI_HTTP_PROTOCOL)
/*
* No harm on doing the following. If the PXE handle is present, the
client could
* find it and try to get its IP address from it. In here the PXE
handle is present
* but the PXE protocol is not yet implmenented, so we add this in the
meantime.
*/
- efi_net_get_addr((struct efi_ipv4_address
*)&netobj->pxe_mode.station_ip,
- (struct efi_ipv4_address
*)&netobj->pxe_mode.subnet_mask, NULL, dev);
+ pxe = NULL;
+ r = efi_search_protocol(&netobj->header,
+ &efi_pxe_base_code_protocol_guid,
+ &phandler);
+ if (r == EFI_SUCCESS && phandler) {
+ pxe = phandler->protocol_interface;
+ efi_net_get_addr((struct efi_ipv4_address
*)&pxe->mode->station_ip,
+ (struct efi_ipv4_address
*)&pxe->mode->subnet_mask, NULL, dev);
+ }
#endif
- return r;
+ return EFI_SUCCESS;
}
/**
@@ -1121,9 +281,7 @@ efi_status_t efi_net_register(struct udevice *dev)
efi_status_t r;
int seq_num;
struct efi_net_obj *netobj;
- void *transmit_buffer = NULL;
- uchar **receive_buffer = NULL;
- size_t *receive_lengths;
+ struct efi_pxe_packet *dhcp_ack;
int i, j;
if (!dev) {
@@ -1150,161 +308,58 @@ efi_status_t efi_net_register(struct udevice *dev)
/* We only expose the "active" network device, so one is enough */
netobj = calloc(1, sizeof(*netobj));
- if (!netobj)
- goto out_of_resources;
-
- netobj->dev = dev;
-
- /* 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);
- netobj->transmit_buffer = transmit_buffer;
-
- /* Allocate a number of receive buffers */
- receive_buffer = calloc(ETH_PACKETS_BATCH_RECV,
- sizeof(*receive_buffer));
- if (!receive_buffer)
- goto out_of_resources;
- for (i = 0; i < ETH_PACKETS_BATCH_RECV; i++) {
- receive_buffer[i] = malloc(PKTSIZE_ALIGN);
- if (!receive_buffer[i])
- goto out_of_resources;
+ if (!netobj) {
+ printf("ERROR: Out of memory\n");
+ return EFI_OUT_OF_RESOURCES;
}
- netobj->receive_buffer = receive_buffer;
- receive_lengths = calloc(ETH_PACKETS_BATCH_RECV,
- sizeof(*receive_lengths));
- if (!receive_lengths)
- goto out_of_resources;
- netobj->receive_lengths = receive_lengths;
+ netobj->dev = dev;
/* 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);
+ /* Install EFI_SIMPLE_NETWORK_PROTOCOL */
+ r = efi_simple_network_install(&netobj->header, dev);
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;
- if (dev_get_plat(dev))
- memcpy(netobj->net_mode.current_address.mac_addr,
- ((struct eth_pdata *)dev_get_plat(dev))->enetaddr, 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;
-
/*
* Scan dhcp entries for one corresponding
* to this udevice, from newest to oldest
*/
+ dhcp_ack = NULL;
i = (next_dhcp_entry + MAX_NUM_DHCP_ENTRIES - 1) % MAX_NUM_DHCP_ENTRIES;
for (j = 0; dhcp_cache[i].is_valid && j < MAX_NUM_DHCP_ENTRIES;
i = (i + MAX_NUM_DHCP_ENTRIES - 1) % MAX_NUM_DHCP_ENTRIES, j++) {
if (dev == dhcp_cache[i].dev) {
- netobj->pxe_mode.dhcp_ack = *dhcp_cache[i].dhcp_ack;
+ dhcp_ack = dhcp_cache[i].dhcp_ack;
break;
}
}
- /*
- * Create WaitForPacket event.
- */
- r = efi_create_event(EVT_NOTIFY_WAIT, TPL_CALLBACK,
- efi_network_timer_notify, NULL, NULL,
- &netobj->wait_for_packet);
- if (r != EFI_SUCCESS) {
- printf("ERROR: Failed to register network event\n");
- return r;
- }
- netobj->net.wait_for_packet = netobj->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,
- &netobj->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(netobj->network_timer_event, EFI_TIMER_PERIODIC, 0);
- if (r != EFI_SUCCESS) {
- printf("ERROR: Failed to set network timer\n");
- return r;
- }
+ /* Install EFI_PXE_BASE_CODE_PROTOCOL */
+ r = efi_pxe_install(&netobj->header, dhcp_ack);
+ if (r != EFI_SUCCESS)
+ goto failure_to_add_protocol;
#if IS_ENABLED(CONFIG_EFI_IP4_CONFIG2_PROTOCOL)
+ /* Install EFI_IP4_CONFIG2_PROTOCOL */
r = efi_ip4_config2_install(&netobj->header);
if (r != EFI_SUCCESS)
goto failure_to_add_protocol;
#endif
#ifdef CONFIG_EFI_HTTP_PROTOCOL
+ /* Install EFI_HTTP_PROTOCOL */
r = efi_http_install(&netobj->header);
if (r != EFI_SUCCESS)
goto failure_to_add_protocol;
#endif
- netobj->efi_seq_num = seq_num;
+
net_objs[seq_num] = netobj;
return EFI_SUCCESS;
failure_to_add_protocol:
printf("ERROR: Failure to add protocol\n");
return r;
-out_of_resources:
- free(netobj);
- netobj = NULL;
- free(transmit_buffer);
- if (receive_buffer)
- for (i = 0; i < ETH_PACKETS_BATCH_RECV; i++)
- free(receive_buffer[i]);
- free(receive_buffer);
- free(receive_lengths);
- printf("ERROR: Out of memory\n");
- return EFI_OUT_OF_RESOURCES;
}
/**
@@ -1656,7 +711,8 @@ efi_status_t efi_net_do_request(u8 *url, enum
efi_http_method method, void **buf
ret = efi_search_protocol(&net_objs[i]->header,
&efi_http_service_binding_guid,
&phandler);
- if (ret == EFI_SUCCESS && phandler == (void *)parent) {
+ if (ret == EFI_SUCCESS && phandler &&
+ phandler->protocol_interface == (void *)parent) {
dev = net_objs[i]->dev;
break;
}
diff --git a/lib/efi_loader/net/efi_pxe.c b/lib/efi_loader/net/efi_pxe.c
new file mode 100644
index 00000000000..69cc5f22f6d
--- /dev/null
+++ b/lib/efi_loader/net/efi_pxe.c
@@ -0,0 +1,190 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * PXE base code protocol
+ *
+ * Copyright (c) 2016 Alexander Graf
+ *
+ */
+
+#define LOG_CATEGORY LOGC_EFI
+
+#include <efi_loader.h>
+#include <dm.h>
+#include <linux/sizes.h>
+#include <malloc.h>
+#include <vsprintf.h>
+#include <net.h>
+
+static const efi_guid_t efi_pxe_base_code_protocol_guid =
+ EFI_PXE_BASE_CODE_PROTOCOL_GUID;
+
+/**
+ * struct efi_pxe_base_code_extended_protocol - EFI object representing a
+ *
EFI_PXE_BASE_CODE_PROTOCOL
+ *
interface
+ *
+ * @pxe: PXE base code protocol interface
+ * @pxe_mode: status of the PXE base code protocol
+
+ */
+struct efi_pxe_base_code_extended_protocol {
+ struct efi_pxe_base_code_protocol pxe;
+ struct efi_pxe_mode pxe_mode;
+};
+
+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_pxe_install() - install the EFI_PXE_BASE_CODE_PROTOCOL
+ *
+ * @handle: handle to install the protocol
+ */
+efi_status_t efi_pxe_install(const efi_handle_t handle,
+ struct efi_pxe_packet *dhcp_ack)
+{
+ efi_status_t r;
+ struct efi_pxe_base_code_extended_protocol *pxe;
+
+ /* We only expose the "active" network device, so one is enough */
+ pxe = calloc(1, sizeof(*pxe));
+ if (!pxe) {
+ printf("ERROR: Out of memory\n");
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ pxe->pxe.revision = EFI_PXE_BASE_CODE_PROTOCOL_REVISION;
+ pxe->pxe.start = efi_pxe_base_code_start;
+ pxe->pxe.stop = efi_pxe_base_code_stop;
+ pxe->pxe.dhcp = efi_pxe_base_code_dhcp;
+ pxe->pxe.discover = efi_pxe_base_code_discover;
+ pxe->pxe.mtftp = efi_pxe_base_code_mtftp;
+ pxe->pxe.udp_write = efi_pxe_base_code_udp_write;
+ pxe->pxe.udp_read = efi_pxe_base_code_udp_read;
+ pxe->pxe.set_ip_filter = efi_pxe_base_code_set_ip_filter;
+ pxe->pxe.arp = efi_pxe_base_code_arp;
+ pxe->pxe.set_parameters = efi_pxe_base_code_set_parameters;
+ pxe->pxe.set_station_ip = efi_pxe_base_code_set_station_ip;
+ pxe->pxe.set_packets = efi_pxe_base_code_set_packets;
+ pxe->pxe.mode = &pxe->pxe_mode;
+
+ if (dhcp_ack)
+ pxe->pxe_mode.dhcp_ack = *dhcp_ack;
+
+ r = efi_add_protocol(handle, &efi_pxe_base_code_protocol_guid,
+ &pxe->pxe);
+ if (r != EFI_SUCCESS)
+ return r;
+
+ return EFI_SUCCESS;
+}
diff --git a/lib/efi_loader/net/efi_simple_network.c
b/lib/efi_loader/net/efi_simple_network.c
new file mode 100644
index 00000000000..c7c03062b11
--- /dev/null
+++ b/lib/efi_loader/net/efi_simple_network.c
@@ -0,0 +1,880 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Simple network 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
+ */
+
+#define LOG_CATEGORY LOGC_EFI
+
+#include <efi_loader.h>
+#include <dm.h>
+#include <linux/sizes.h>
+#include <malloc.h>
+#include <vsprintf.h>
+#include <net.h>
+
+static const efi_guid_t efi_net_guid = EFI_SIMPLE_NETWORK_PROTOCOL_GUID;
+
+/**
+ * struct efi_simple_network_extended_protocol - EFI object representing an
+ * EFI_SIMPLE_NETWORK_PROTOCOL
+ * interface
+ *
+ * @net: simple network protocol interface
+ * @net_mode: status of the network interface
+ * @dev: net udevice
+ * @new_tx_packet: new transmit packet
+ * @transmit_buffer: transmit buffer
+ * @receive_buffer: array of receive buffers
+ * @receive_lengths: array of lengths for received packets
+ * @rx_packet_idx: index of the current receive packet
+ * @rx_packet_num: number of received packets
+ * @wait_for_packet: signaled when a packet has been received
+ * @network_timer_event: event to check for new network packets.
+ */
+struct efi_simple_network_extended_protocol {
+ struct efi_simple_network_protocol net;
+ struct efi_simple_network_mode net_mode;
+ struct udevice *dev;
+ void *new_tx_packet;
+ void *transmit_buffer;
+ uchar **receive_buffer;
+ size_t *receive_lengths;
+ int rx_packet_idx;
+ int rx_packet_num;
+ struct efi_event *wait_for_packet;
+ struct efi_event *network_timer_event;
+};
+
+static struct efi_simple_network_extended_protocol *current_network;
+
+/*
+ * 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_protocol
*this)
+{
+ efi_status_t ret = EFI_SUCCESS;
+ struct efi_simple_network_extended_protocol *nt;
+
+ EFI_ENTRY("%p", this);
+ /* Check parameters */
+ if (!this) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ nt = (struct efi_simple_network_extended_protocol *)this;
+
+ if (this->mode->state != EFI_NETWORK_STOPPED) {
+ ret = EFI_ALREADY_STARTED;
+ } else {
+ this->int_status = 0;
+ nt->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_protocol
*this)
+{
+ efi_status_t ret = EFI_SUCCESS;
+ struct efi_simple_network_extended_protocol *nt;
+
+ EFI_ENTRY("%p", this);
+
+ /* Check parameters */
+ if (!this) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ nt = (struct efi_simple_network_extended_protocol *)this;
+
+ if (this->mode->state == EFI_NETWORK_STOPPED) {
+ ret = EFI_NOT_STARTED;
+ } else {
+ /* Disable hardware and put it into the reset state */
+ eth_set_dev(nt->dev);
+ env_set("ethact", eth_get_name());
+ eth_halt();
+ /* Clear cache of packets */
+ nt->rx_packet_num = 0;
+ 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_protocol *this,
+ ulong extra_rx, ulong extra_tx)
+{
+ int ret;
+ efi_status_t r = EFI_SUCCESS;
+ struct efi_simple_network_extended_protocol *nt;
+
+ EFI_ENTRY("%p, %lx, %lx", this, extra_rx, extra_tx);
+
+ /* Check parameters */
+ if (!this) {
+ r = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ nt = (struct efi_simple_network_extended_protocol *)this;
+
+ 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();
+ /* Clear cache of packets */
+ nt->rx_packet_num = 0;
+ /* Set the net device corresponding to the efi net object */
+ eth_set_dev(nt->dev);
+ env_set("ethact", eth_get_name());
+ /* Get hardware ready for send and receive operations */
+ ret = eth_start_udev(nt->dev);
+ if (ret < 0) {
+ eth_halt();
+ this->mode->state = EFI_NETWORK_STOPPED;
+ r = EFI_DEVICE_ERROR;
+ goto out;
+ } else {
+ this->int_status = 0;
+ nt->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_protocol
*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_protocol
*this)
+{
+ efi_status_t ret = EFI_SUCCESS;
+ struct efi_simple_network_extended_protocol *nt;
+
+ EFI_ENTRY("%p", this);
+
+ /* Check parameters */
+ if (!this) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ nt = (struct efi_simple_network_extended_protocol *)this;
+
+ 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_set_dev(nt->dev);
+ env_set("ethact", eth_get_name());
+ eth_halt();
+
+ this->int_status = 0;
+ nt->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_protocol *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_protocol *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_protocol *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_protocol *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_protocol
*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_protocol *this,
+ u32 *int_status, void **txbuf)
+{
+ efi_status_t ret = EFI_SUCCESS;
+ struct efi_simple_network_extended_protocol *nt;
+
+ EFI_ENTRY("%p, %p, %p", this, int_status, txbuf);
+
+ efi_timer_check();
+
+ /* Check parameters */
+ if (!this) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ nt = (struct efi_simple_network_extended_protocol *)this;
+
+ 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 = nt->new_tx_packet;
+
+ nt->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_protocol *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 efi_simple_network_extended_protocol *nt;
+
+ 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;
+ }
+
+ nt = (struct efi_simple_network_extended_protocol *)this;
+
+ /* 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;
+ }
+
+ eth_set_dev(nt->dev);
+ env_set("ethact", eth_get_name());
+
+ /* Ethernet packets always fit, just bounce */
+ memcpy(nt->transmit_buffer, buffer, buffer_size);
+ net_send_packet(nt->transmit_buffer, buffer_size);
+
+ nt->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_protocol *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;
+ struct efi_simple_network_extended_protocol *nt;
+
+ 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;
+ }
+
+ nt = (struct efi_simple_network_extended_protocol *)this;
+
+ 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 (!nt->rx_packet_num) {
+ ret = EFI_NOT_READY;
+ goto out;
+ }
+ /* Fill export parameters */
+ eth_hdr = (struct ethernet_hdr *)nt->receive_buffer[nt->rx_packet_idx];
+ protlen = ntohs(eth_hdr->et_protlen);
+ if (protlen == 0x8100) {
+ hdr_size += 4;
+ protlen = ntohs(*(u16
*)&nt->receive_buffer[nt->rx_packet_idx][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 < nt->receive_lengths[nt->rx_packet_idx]) {
+ /* Packet doesn't fit, try again with bigger buffer */
+ *buffer_size = nt->receive_lengths[nt->rx_packet_idx];
+ ret = EFI_BUFFER_TOO_SMALL;
+ goto out;
+ }
+ /* Copy packet */
+ memcpy(buffer, nt->receive_buffer[nt->rx_packet_idx],
+ nt->receive_lengths[nt->rx_packet_idx]);
+ *buffer_size = nt->receive_lengths[nt->rx_packet_idx];
+ nt->rx_packet_idx = (nt->rx_packet_idx + 1) % ETH_PACKETS_BATCH_RECV;
+ nt->rx_packet_num--;
+ if (nt->rx_packet_num)
+ nt->wait_for_packet->is_signaled = true;
+ else
+ this->int_status &= ~EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
+out:
+ return EFI_EXIT(ret);
+}
+
+/**
+ * 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)
+{
+ int rx_packet_next;
+ struct efi_simple_network_extended_protocol *nt;
+
+ nt = current_network;
+ if (!nt)
+ return;
+
+ /* Check that we at least received an Ethernet header */
+ if (len < sizeof(struct ethernet_hdr))
+ return;
+
+ /* Check that the buffer won't overflow */
+ if (len > PKTSIZE_ALIGN)
+ return;
+
+ /* Can't store more than pre-alloced buffer */
+ if (nt->rx_packet_num >= ETH_PACKETS_BATCH_RECV)
+ return;
+
+ rx_packet_next = (nt->rx_packet_idx + nt->rx_packet_num) %
+ ETH_PACKETS_BATCH_RECV;
+ memcpy(nt->receive_buffer[rx_packet_next], pkt, len);
+ nt->receive_lengths[rx_packet_next] = len;
+
+ nt->rx_packet_num++;
+}
+
+/**
+ * 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_extended_protocol *nt;
+
+ EFI_ENTRY("%p, %p", event, context);
+
+ nt = (struct efi_simple_network_extended_protocol *)context;
+
+ /*
+ * Some network drivers do not support calling eth_rx() before
+ * initialization.
+ */
+ if (!nt || nt->net.mode->state != EFI_NETWORK_INITIALIZED)
+ goto out;
+
+ current_network = nt;
+
+ if (!nt->rx_packet_num) {
+ eth_set_dev(nt->dev);
+ env_set("ethact", eth_get_name());
+ push_packet = efi_net_push;
+ eth_rx();
+ push_packet = NULL;
+ if (nt->rx_packet_num) {
+ nt->net.int_status |=
+ EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
+ nt->wait_for_packet->is_signaled = true;
+ }
+ }
+out:
+ EFI_EXIT(EFI_SUCCESS);
+}
+
+/**
+ * efi_simple_network_install() - install the EFI_SIMPLE_NETWORK_PROTOCOL
+ *
+ * @handle: handle to install the protocol
+ * @dev: net udevice
+ */
+efi_status_t efi_simple_network_install(const efi_handle_t handle, struct
udevice *dev)
+{
+ efi_status_t r;
+ struct efi_simple_network_extended_protocol *simple_network;
+ void *transmit_buffer = NULL;
+ uchar **receive_buffer = NULL;
+ size_t *receive_lengths;
+ int i;
+
+ if (!dev) {
+ /* No network device active, don't expose any */
+ return EFI_SUCCESS;
+ }
+
+ /* We only expose the "active" network device, so one is enough */
+ simple_network = calloc(1, sizeof(*simple_network));
+ if (!simple_network)
+ goto out_of_resources;
+
+ simple_network->dev = dev;
+
+ /* 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);
+ simple_network->transmit_buffer = transmit_buffer;
+
+ /* Allocate a number of receive buffers */
+ receive_buffer = calloc(ETH_PACKETS_BATCH_RECV,
+ sizeof(*receive_buffer));
+ if (!receive_buffer)
+ goto out_of_resources;
+ for (i = 0; i < ETH_PACKETS_BATCH_RECV; i++) {
+ receive_buffer[i] = malloc(PKTSIZE_ALIGN);
+ if (!receive_buffer[i])
+ goto out_of_resources;
+ }
+ simple_network->receive_buffer = receive_buffer;
+
+ receive_lengths = calloc(ETH_PACKETS_BATCH_RECV,
+ sizeof(*receive_lengths));
+ if (!receive_lengths)
+ goto out_of_resources;
+ simple_network->receive_lengths = receive_lengths;
+
+ simple_network->net.revision = EFI_SIMPLE_NETWORK_PROTOCOL_REVISION;
+ simple_network->net.start = efi_net_start;
+ simple_network->net.stop = efi_net_stop;
+ simple_network->net.initialize = efi_net_initialize;
+ simple_network->net.reset = efi_net_reset;
+ simple_network->net.shutdown = efi_net_shutdown;
+ simple_network->net.receive_filters = efi_net_receive_filters;
+ simple_network->net.station_address = efi_net_station_address;
+ simple_network->net.statistics = efi_net_statistics;
+ simple_network->net.mcastiptomac = efi_net_mcastiptomac;
+ simple_network->net.nvdata = efi_net_nvdata;
+ simple_network->net.get_status = efi_net_get_status;
+ simple_network->net.transmit = efi_net_transmit;
+ simple_network->net.receive = efi_net_receive;
+ simple_network->net.mode = &simple_network->net_mode;
+ simple_network->net_mode.state = EFI_NETWORK_STOPPED;
+ if (dev_get_plat(dev))
+ memcpy(simple_network->net_mode.current_address.mac_addr,
+ ((struct eth_pdata *)dev_get_plat(dev))->enetaddr, 6);
+ simple_network->net_mode.hwaddr_size = ARP_HLEN;
+ simple_network->net_mode.media_header_size = ETHER_HDR_SIZE;
+ simple_network->net_mode.max_packet_size = PKTSIZE;
+ simple_network->net_mode.if_type = ARP_ETHER;
+
+ /*
+ * Create WaitForPacket event.
+ */
+ r = efi_create_event(EVT_NOTIFY_WAIT, TPL_CALLBACK,
+ efi_network_timer_notify, NULL, NULL,
+ &simple_network->wait_for_packet);
+ if (r != EFI_SUCCESS) {
+ printf("ERROR: Failed to register network event\n");
+ return r;
+ }
+ simple_network->net.wait_for_packet = simple_network->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, simple_network, NULL,
+ &simple_network->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(simple_network->network_timer_event,
EFI_TIMER_PERIODIC, 0);
+ if (r != EFI_SUCCESS) {
+ printf("ERROR: Failed to set network timer\n");
