mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-15 15:53:02 +00:00
119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
|
// SPDX-License-Identifier: GPL-2.0+
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2013 Allied Telesis Labs NZ
|
||
|
|
* Chris Packham, <judge.packham@gmail.com>
|
||
|
|
*
|
||
|
|
* Copyright (C) 2022 YADRO
|
||
|
|
* Viacheslav Mitrofanov <v.v.mitrofanov@yadro.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Simple ping6 implementation */
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
#include <net.h>
|
||
|
|
#include <net6.h>
|
||
|
|
#include "ndisc.h"
|
||
|
|
|
||
|
|
static ushort seq_no;
|
||
|
|
|
||
|
|
/* the ipv6 address to ping */
|
||
|
|
struct in6_addr net_ping_ip6;
|
||
|
|
|
||
|
|
int
|
||
|
|
ip6_make_ping(uchar *eth_dst_addr, struct in6_addr *neigh_addr, uchar *pkt)
|
||
|
|
{
|
||
|
|
struct echo_msg *msg;
|
||
|
|
u16 len;
|
||
|
|
u16 csum_p;
|
||
|
|
uchar *pkt_old = pkt;
|
||
|
|
|
||
|
|
len = sizeof(struct echo_msg);
|
||
|
|
|
||
|
|
pkt += net_set_ether(pkt, eth_dst_addr, PROT_IP6);
|
||
|
|
pkt += ip6_add_hdr(pkt, &net_ip6, neigh_addr, PROT_ICMPV6,
|
||
|
|
IPV6_NDISC_HOPLIMIT, len);
|
||
|
|
|
||
|
|
/* ICMPv6 - Echo */
|
||
|
|
msg = (struct echo_msg *)pkt;
|
||
|
|
msg->icmph.icmp6_type = IPV6_ICMP_ECHO_REQUEST;
|
||
|
|
msg->icmph.icmp6_code = 0;
|
||
|
|
msg->icmph.icmp6_cksum = 0;
|
||
|
|
msg->icmph.icmp6_identifier = 0;
|
||
|
|
msg->icmph.icmp6_sequence = htons(seq_no++);
|
||
|
|
msg->id = msg->icmph.icmp6_identifier; /* these seem redundant */
|
||
|
|
msg->sequence = msg->icmph.icmp6_sequence;
|
||
|
|
|
||
|
|
/* checksum */
|
||
|
|
csum_p = csum_partial((u8 *)msg, len, 0);
|
||
|
|
msg->icmph.icmp6_cksum = csum_ipv6_magic(&net_ip6, neigh_addr, len,
|
||
|
|
PROT_ICMPV6, csum_p);
|
||
|
|
|
||
|
|
pkt += len;
|
||
|
|
|
||
|
|
return pkt - pkt_old;
|
||
|
|
}
|
||
|
|
|
||
|
|
int ping6_send(void)
|
||
|
|
{
|
||
|
|
uchar *pkt;
|
||
|
|
static uchar mac[6];
|
||
|
|
|
||
|
|
/* always send neighbor solicit */
|
||
|
|
|
||
|
|
memcpy(mac, net_null_ethaddr, 6);
|
||
|
|
|
||
|
|
net_nd_sol_packet_ip6 = net_ping_ip6;
|
||
|
|
net_nd_packet_mac = mac;
|
||
|
|
|
||
|
|
pkt = net_nd_tx_packet;
|
||
|
|
pkt += ip6_make_ping(mac, &net_ping_ip6, pkt);
|
||
|
|
|
||
|
|
/* size of the waiting packet */
|
||
|
|
net_nd_tx_packet_size = (pkt - net_nd_tx_packet);
|
||
|
|
|
||
|
|
/* and do the ARP request */
|
||
|
|
net_nd_try = 1;
|
||
|
|
net_nd_timer_start = get_timer(0);
|
||
|
|
ndisc_request();
|
||
|
|
return 1; /* waiting */
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ping6_timeout(void)
|
||
|
|
{
|
||
|
|
eth_halt();
|
||
|
|
net_set_state(NETLOOP_FAIL); /* we did not get the reply */
|
||
|
|
}
|
||
|
|
|
||
|
|
void ping6_start(void)
|
||
|
|
{
|
||
|
|
printf("Using %s device\n", eth_get_name());
|
||
|
|
net_set_timeout_handler(10000UL, ping6_timeout);
|
||
|
|
|
||
|
|
ping6_send();
|
||
|
|
}
|
||
|
|
|
||
|
|
int ping6_receive(struct ethernet_hdr *et, struct ip6_hdr *ip6, int len)
|
||
|
|
{
|
||
|
|
struct icmp6hdr *icmp =
|
||
|
|
(struct icmp6hdr *)(((uchar *)ip6) + IP6_HDR_SIZE);
|
||
|
|
struct in6_addr src_ip;
|
||
|
|
|
||
|
|
switch (icmp->icmp6_type) {
|
||
|
|
case IPV6_ICMP_ECHO_REPLY:
|
||
|
|
src_ip = ip6->saddr;
|
||
|
|
if (memcmp(&net_ping_ip6, &src_ip, sizeof(struct in6_addr)))
|
||
|
|
return -EINVAL;
|
||
|
|
net_set_state(NETLOOP_SUCCESS);
|
||
|
|
break;
|
||
|
|
case IPV6_ICMP_ECHO_REQUEST:
|
||
|
|
/* ignore for now.... */
|
||
|
|
debug("Got ICMPv6 ECHO REQUEST from %pI6c\n", &ip6->saddr);
|
||
|
|
return -EINVAL;
|
||
|
|
default:
|
||
|
|
debug("Unexpected ICMPv6 type 0x%x\n", icmp->icmp6_type);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|