2 * EFI application network access support
4 * Copyright (c) 2016 Alexander Graf
6 * SPDX-License-Identifier: GPL-2.0+
10 #include <efi_loader.h>
15 DECLARE_GLOBAL_DATA_PTR
;
17 static const efi_guid_t efi_net_guid
= EFI_SIMPLE_NETWORK_GUID
;
18 static const efi_guid_t efi_pxe_guid
= EFI_PXE_GUID
;
19 static struct efi_pxe_packet
*dhcp_ack
;
20 static bool new_rx_packet
;
21 static void *new_tx_packet
;
24 /* Generic EFI object parent class data */
25 struct efi_object parent
;
26 /* EFI Interface callback struct for network */
27 struct efi_simple_network net
;
28 struct efi_simple_network_mode net_mode
;
29 /* PXE struct to transmit dhcp data */
31 struct efi_pxe_mode pxe_mode
;
34 static efi_status_t EFIAPI
efi_net_start(struct efi_simple_network
*this)
36 EFI_ENTRY("%p", this);
38 return EFI_EXIT(EFI_SUCCESS
);
41 static efi_status_t EFIAPI
efi_net_stop(struct efi_simple_network
*this)
43 EFI_ENTRY("%p", this);
45 return EFI_EXIT(EFI_SUCCESS
);
48 static efi_status_t EFIAPI
efi_net_initialize(struct efi_simple_network
*this,
49 ulong extra_rx
, ulong extra_tx
)
51 EFI_ENTRY("%p, %lx, %lx", this, extra_rx
, extra_tx
);
55 return EFI_EXIT(EFI_SUCCESS
);
58 static efi_status_t EFIAPI
efi_net_reset(struct efi_simple_network
*this,
59 int extended_verification
)
61 EFI_ENTRY("%p, %x", this, extended_verification
);
63 return EFI_EXIT(EFI_SUCCESS
);
66 static efi_status_t EFIAPI
efi_net_shutdown(struct efi_simple_network
*this)
68 EFI_ENTRY("%p", this);
70 return EFI_EXIT(EFI_SUCCESS
);
73 static efi_status_t EFIAPI
efi_net_receive_filters(
74 struct efi_simple_network
*this, u32 enable
, u32 disable
,
75 int reset_mcast_filter
, ulong mcast_filter_count
,
76 struct efi_mac_address
*mcast_filter
)
78 EFI_ENTRY("%p, %x, %x, %x, %lx, %p", this, enable
, disable
,
79 reset_mcast_filter
, mcast_filter_count
, mcast_filter
);
83 return EFI_EXIT(EFI_SUCCESS
);
86 static efi_status_t EFIAPI
efi_net_station_address(
87 struct efi_simple_network
*this, int reset
,
88 struct efi_mac_address
*new_mac
)
90 EFI_ENTRY("%p, %x, %p", this, reset
, new_mac
);
92 return EFI_EXIT(EFI_INVALID_PARAMETER
);
95 static efi_status_t EFIAPI
efi_net_statistics(struct efi_simple_network
*this,
96 int reset
, ulong
*stat_size
,
99 EFI_ENTRY("%p, %x, %p, %p", this, reset
, stat_size
, stat_table
);
101 return EFI_EXIT(EFI_INVALID_PARAMETER
);
104 static efi_status_t EFIAPI
efi_net_mcastiptomac(struct efi_simple_network
*this,
106 struct efi_ip_address
*ip
,
107 struct efi_mac_address
*mac
)
109 EFI_ENTRY("%p, %x, %p, %p", this, ipv6
, ip
, mac
);
111 return EFI_EXIT(EFI_INVALID_PARAMETER
);
114 static efi_status_t EFIAPI
efi_net_nvdata(struct efi_simple_network
*this,
115 int read_write
, ulong offset
,
116 ulong buffer_size
, char *buffer
)
118 EFI_ENTRY("%p, %x, %lx, %lx, %p", this, read_write
, offset
, buffer_size
,
121 return EFI_EXIT(EFI_INVALID_PARAMETER
);
124 static efi_status_t EFIAPI
efi_net_get_status(struct efi_simple_network
*this,
125 u32
*int_status
, void **txbuf
)
127 EFI_ENTRY("%p, %p, %p", this, int_status
, txbuf
);
129 /* We send packets synchronously, so nothing is outstanding */
133 *txbuf
= new_tx_packet
;
135 new_tx_packet
= NULL
;
137 return EFI_EXIT(EFI_SUCCESS
);
140 static efi_status_t EFIAPI
efi_net_transmit(struct efi_simple_network
*this,
141 ulong header_size
, ulong buffer_size
, void *buffer
,
142 struct efi_mac_address
*src_addr
,
143 struct efi_mac_address
*dest_addr
, u16
*protocol
)
145 EFI_ENTRY("%p, %lx, %lx, %p, %p, %p, %p", this, header_size
,
146 buffer_size
, buffer
, src_addr
, dest_addr
, protocol
);
149 /* We would need to create the header if header_size != 0 */
150 return EFI_EXIT(EFI_INVALID_PARAMETER
);
153 #ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
154 /* Ethernet packets always fit, just bounce */
155 memcpy(efi_bounce_buffer
, buffer
, buffer_size
);
156 net_send_packet(efi_bounce_buffer
, buffer_size
);
158 net_send_packet(buffer
, buffer_size
);
161 new_tx_packet
= buffer
;
163 return EFI_EXIT(EFI_SUCCESS
);
166 static void efi_net_push(void *pkt
, int len
)
168 new_rx_packet
= true;
171 static efi_status_t EFIAPI
efi_net_receive(struct efi_simple_network
*this,
172 ulong
*header_size
, ulong
*buffer_size
, void *buffer
,
173 struct efi_mac_address
*src_addr
,
174 struct efi_mac_address
*dest_addr
, u16
*protocol
)
176 EFI_ENTRY("%p, %p, %p, %p, %p, %p, %p", this, header_size
,
177 buffer_size
, buffer
, src_addr
, dest_addr
, protocol
);
179 push_packet
= efi_net_push
;
184 return EFI_EXIT(EFI_NOT_READY
);
186 if (*buffer_size
< net_rx_packet_len
) {
187 /* Packet doesn't fit, try again with bigger buf */
188 *buffer_size
= net_rx_packet_len
;
189 return EFI_EXIT(EFI_BUFFER_TOO_SMALL
);
192 memcpy(buffer
, net_rx_packet
, net_rx_packet_len
);
193 *buffer_size
= net_rx_packet_len
;
194 new_rx_packet
= false;
196 return EFI_EXIT(EFI_SUCCESS
);
199 void efi_net_set_dhcp_ack(void *pkt
, int len
)
201 int maxsize
= sizeof(*dhcp_ack
);
204 dhcp_ack
= malloc(maxsize
);
206 memcpy(dhcp_ack
, pkt
, min(len
, maxsize
));
209 /* This gets called from do_bootefi_exec(). */
210 int efi_net_register(void)
212 struct efi_net_obj
*netobj
;
214 if (!eth_get_dev()) {
215 /* No eth device active, don't expose any */
219 /* We only expose the "active" eth device, so one is enough */
220 netobj
= calloc(1, sizeof(*netobj
));
222 /* Fill in object data */
223 netobj
->parent
.protocols
[0].guid
= &efi_net_guid
;
224 netobj
->parent
.protocols
[0].protocol_interface
= &netobj
->net
;
225 netobj
->parent
.protocols
[1].guid
= &efi_guid_device_path
;
226 netobj
->parent
.protocols
[1].protocol_interface
=
228 netobj
->parent
.protocols
[2].guid
= &efi_pxe_guid
;
229 netobj
->parent
.protocols
[2].protocol_interface
= &netobj
->pxe
;
230 netobj
->parent
.handle
= &netobj
->net
;
231 netobj
->net
.revision
= EFI_SIMPLE_NETWORK_PROTOCOL_REVISION
;
232 netobj
->net
.start
= efi_net_start
;
233 netobj
->net
.stop
= efi_net_stop
;
234 netobj
->net
.initialize
= efi_net_initialize
;
235 netobj
->net
.reset
= efi_net_reset
;
236 netobj
->net
.shutdown
= efi_net_shutdown
;
237 netobj
->net
.receive_filters
= efi_net_receive_filters
;
238 netobj
->net
.station_address
= efi_net_station_address
;
239 netobj
->net
.statistics
= efi_net_statistics
;
240 netobj
->net
.mcastiptomac
= efi_net_mcastiptomac
;
241 netobj
->net
.nvdata
= efi_net_nvdata
;
242 netobj
->net
.get_status
= efi_net_get_status
;
243 netobj
->net
.transmit
= efi_net_transmit
;
244 netobj
->net
.receive
= efi_net_receive
;
245 netobj
->net
.mode
= &netobj
->net_mode
;
246 netobj
->net_mode
.state
= EFI_NETWORK_STARTED
;
247 memcpy(netobj
->net_mode
.current_address
.mac_addr
, eth_get_ethaddr(), 6);
248 netobj
->net_mode
.max_packet_size
= PKTSIZE
;
250 netobj
->pxe
.mode
= &netobj
->pxe_mode
;
252 netobj
->pxe_mode
.dhcp_ack
= *dhcp_ack
;
254 /* Hook net up to the device list */
255 list_add_tail(&netobj
->parent
.link
, &efi_obj_list
);