From e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Fri, 28 Aug 2015 09:58:54 +0800 Subject: Add qemu 2.4.0 Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang --- qemu/roms/u-boot/net/ping.c | 115 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 115 insertions(+) create mode 100644 qemu/roms/u-boot/net/ping.c (limited to 'qemu/roms/u-boot/net/ping.c') diff --git a/qemu/roms/u-boot/net/ping.c b/qemu/roms/u-boot/net/ping.c new file mode 100644 index 000000000..0710b9228 --- /dev/null +++ b/qemu/roms/u-boot/net/ping.c @@ -0,0 +1,115 @@ +/* + * Copied from Linux Monitor (LiMon) - Networking. + * + * Copyright 1994 - 2000 Neil Russell. + * (See License) + * Copyright 2000 Roland Borde + * Copyright 2000 Paolo Scaffardi + * Copyright 2000-2002 Wolfgang Denk, wd@denx.de + */ + +#include "ping.h" +#include "arp.h" + +static ushort PingSeqNo; + +/* The ip address to ping */ +IPaddr_t NetPingIP; + +static void set_icmp_header(uchar *pkt, IPaddr_t dest) +{ + /* + * Construct an IP and ICMP header. + */ + struct ip_hdr *ip = (struct ip_hdr *)pkt; + struct icmp_hdr *icmp = (struct icmp_hdr *)(pkt + IP_HDR_SIZE); + + net_set_ip_header(pkt, dest, NetOurIP); + + ip->ip_len = htons(IP_ICMP_HDR_SIZE); + ip->ip_p = IPPROTO_ICMP; + ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE >> 1); + + icmp->type = ICMP_ECHO_REQUEST; + icmp->code = 0; + icmp->checksum = 0; + icmp->un.echo.id = 0; + icmp->un.echo.sequence = htons(PingSeqNo++); + icmp->checksum = ~NetCksum((uchar *)icmp, ICMP_HDR_SIZE >> 1); +} + +static int ping_send(void) +{ + uchar *pkt; + int eth_hdr_size; + + /* XXX always send arp request */ + + debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &NetPingIP); + + NetArpWaitPacketIP = NetPingIP; + + eth_hdr_size = NetSetEther(NetTxPacket, NetEtherNullAddr, PROT_IP); + pkt = (uchar *)NetTxPacket + eth_hdr_size; + + set_icmp_header(pkt, NetPingIP); + + /* size of the waiting packet */ + NetArpWaitTxPacketSize = eth_hdr_size + IP_ICMP_HDR_SIZE; + + /* and do the ARP request */ + NetArpWaitTry = 1; + NetArpWaitTimerStart = get_timer(0); + ArpRequest(); + return 1; /* waiting */ +} + +static void ping_timeout(void) +{ + eth_halt(); + net_set_state(NETLOOP_FAIL); /* we did not get the reply */ +} + +void ping_start(void) +{ + printf("Using %s device\n", eth_get_name()); + NetSetTimeout(10000UL, ping_timeout); + + ping_send(); +} + +void ping_receive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len) +{ + struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src; + IPaddr_t src_ip; + int eth_hdr_size; + + switch (icmph->type) { + case ICMP_ECHO_REPLY: + src_ip = NetReadIP((void *)&ip->ip_src); + if (src_ip == NetPingIP) + net_set_state(NETLOOP_SUCCESS); + return; + case ICMP_ECHO_REQUEST: + eth_hdr_size = net_update_ether(et, et->et_src, PROT_IP); + + debug_cond(DEBUG_DEV_PKT, "Got ICMP ECHO REQUEST, return " + "%d bytes\n", eth_hdr_size + len); + + ip->ip_sum = 0; + ip->ip_off = 0; + NetCopyIP((void *)&ip->ip_dst, &ip->ip_src); + NetCopyIP((void *)&ip->ip_src, &NetOurIP); + ip->ip_sum = ~NetCksum((uchar *)ip, + IP_HDR_SIZE >> 1); + + icmph->type = ICMP_ECHO_REPLY; + icmph->checksum = 0; + icmph->checksum = ~NetCksum((uchar *)icmph, + (len - IP_HDR_SIZE) >> 1); + NetSendPacket((uchar *)et, eth_hdr_size + len); + return; +/* default: + return;*/ + } +} -- cgit 1.2.3-korg