mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 00:21:06 +00:00
e7dcf5645f
This header file is now only used by files that access internal environment features. Drop it from various places where it is not needed. Acked-by: Joe Hershberger <joe.hershberger@ni.com> Signed-off-by: Simon Glass <sjg@chromium.org>
96 lines
2 KiB
C
96 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2018 Lothar Felten, lothar.felten@gmail.com
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <env.h>
|
|
#include <net.h>
|
|
#include "wol.h"
|
|
|
|
static ulong wol_timeout = WOL_DEFAULT_TIMEOUT;
|
|
|
|
/*
|
|
* Check incoming Wake-on-LAN packet for:
|
|
* - sync bytes
|
|
* - sixteen copies of the target MAC address
|
|
*
|
|
* @param wol Wake-on-LAN packet
|
|
* @param len Packet length
|
|
*/
|
|
static int wol_check_magic(struct wol_hdr *wol, unsigned int len)
|
|
{
|
|
int i;
|
|
|
|
if (len < sizeof(struct wol_hdr))
|
|
return 0;
|
|
|
|
for (i = 0; i < WOL_SYNC_COUNT; i++)
|
|
if (wol->wol_sync[i] != WOL_SYNC_BYTE)
|
|
return 0;
|
|
|
|
for (i = 0; i < WOL_MAC_REPETITIONS; i++)
|
|
if (memcmp(&wol->wol_dest[i * ARP_HLEN],
|
|
net_ethaddr, ARP_HLEN) != 0)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
void wol_receive(struct ip_udp_hdr *ip, unsigned int len)
|
|
{
|
|
struct wol_hdr *wol;
|
|
|
|
wol = (struct wol_hdr *)ip;
|
|
|
|
if (!wol_check_magic(wol, len))
|
|
return;
|
|
|
|
/* save the optional password using the ether-wake formats */
|
|
/* don't check for exact length, the packet might have padding */
|
|
if (len >= (sizeof(struct wol_hdr) + WOL_PASSWORD_6B)) {
|
|
eth_env_set_enetaddr("wolpassword", wol->wol_passwd);
|
|
} else if (len >= (sizeof(struct wol_hdr) + WOL_PASSWORD_4B)) {
|
|
char buffer[16];
|
|
struct in_addr *ip = (struct in_addr *)(wol->wol_passwd);
|
|
|
|
ip_to_string(*ip, buffer);
|
|
env_set("wolpassword", buffer);
|
|
}
|
|
net_set_state(NETLOOP_SUCCESS);
|
|
}
|
|
|
|
static void wol_udp_handler(uchar *pkt, unsigned int dest, struct in_addr sip,
|
|
unsigned int src, unsigned int len)
|
|
{
|
|
struct wol_hdr *wol;
|
|
|
|
wol = (struct wol_hdr *)pkt;
|
|
|
|
/* UDP destination port must be 0, 7 or 9 */
|
|
if (dest != 0 && dest != 7 && dest != 9)
|
|
return;
|
|
|
|
if (!wol_check_magic(wol, len))
|
|
return;
|
|
|
|
net_set_state(NETLOOP_SUCCESS);
|
|
}
|
|
|
|
void wol_set_timeout(ulong timeout)
|
|
{
|
|
wol_timeout = timeout;
|
|
}
|
|
|
|
static void wol_timeout_handler(void)
|
|
{
|
|
eth_halt();
|
|
net_set_state(NETLOOP_FAIL);
|
|
}
|
|
|
|
void wol_start(void)
|
|
{
|
|
net_set_timeout_handler(wol_timeout, wol_timeout_handler);
|
|
net_set_udp_handler(wol_udp_handler);
|
|
}
|