Add qemu 2.4.0

[kvmfornfv.git] / 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 (file)
index 0000000..0710b92
--- /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;*/
+       }
+}