* Copyright 2000 Roland Borde
* Copyright 2000 Paolo Scaffardi
* Copyright 2000-2002 Wolfgang Denk, wd@denx.de
+ * SPDX-License-Identifier: GPL-2.0
*/
#include "ping.h"
#include "arp.h"
-static ushort PingSeqNo;
+static ushort ping_seq_number;
/* The ip address to ping */
-IPaddr_t NetPingIP;
+struct in_addr net_ping_ip;
+
+static void set_icmp_header(uchar *pkt, struct in_addr 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, net_ip);
+
+ ip->ip_len = htons(IP_ICMP_HDR_SIZE);
+ ip->ip_p = IPPROTO_ICMP;
+ ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE);
+
+ icmp->type = ICMP_ECHO_REQUEST;
+ icmp->code = 0;
+ icmp->checksum = 0;
+ icmp->un.echo.id = 0;
+ icmp->un.echo.sequence = htons(ping_seq_number++);
+ icmp->checksum = compute_ip_checksum(icmp, ICMP_HDR_SIZE);
+}
static int ping_send(void)
{
- static uchar mac[6];
- struct ip_udp_hdr *ip;
- ushort *s;
uchar *pkt;
+ int eth_hdr_size;
/* XXX always send arp request */
- memcpy(mac, NetEtherNullAddr, 6);
-
- debug("sending ARP for %pI4\n", &NetPingIP);
+ debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &net_ping_ip);
- NetArpWaitPacketIP = NetPingIP;
- NetArpWaitPacketMAC = mac;
+ net_arp_wait_packet_ip = net_ping_ip;
- pkt = NetArpWaitTxPacket;
- pkt += NetSetEther(pkt, mac, PROT_IP);
+ eth_hdr_size = net_set_ether(net_tx_packet, net_null_ethaddr, PROT_IP);
+ pkt = (uchar *)net_tx_packet + eth_hdr_size;
- ip = (struct ip_udp_hdr *)pkt;
-
- /*
- * Construct an IP and ICMP header.
- * (need to set no fragment bit - XXX)
- */
- /* IP_HDR_SIZE / 4 (not including UDP) */
- ip->ip_hl_v = 0x45;
- ip->ip_tos = 0;
- ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8);
- ip->ip_id = htons(NetIPID++);
- ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */
- ip->ip_ttl = 255;
- ip->ip_p = 0x01; /* ICMP */
- ip->ip_sum = 0;
- /* already in network byte order */
- NetCopyIP((void *)&ip->ip_src, &NetOurIP);
- /* - "" - */
- NetCopyIP((void *)&ip->ip_dst, &NetPingIP);
- ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
-
- s = &ip->udp_src; /* XXX ICMP starts here */
- s[0] = htons(0x0800); /* echo-request, code */
- s[1] = 0; /* checksum */
- s[2] = 0; /* identifier */
- s[3] = htons(PingSeqNo++); /* sequence number */
- s[1] = ~NetCksum((uchar *)s, 8/2);
+ set_icmp_header(pkt, net_ping_ip);
/* size of the waiting packet */
- NetArpWaitTxPacketSize =
- (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8;
+ arp_wait_tx_packet_size = eth_hdr_size + IP_ICMP_HDR_SIZE;
/* and do the ARP request */
- NetArpWaitTry = 1;
- NetArpWaitTimerStart = get_timer(0);
- ArpRequest();
+ arp_wait_try = 1;
+ arp_wait_timer_start = get_timer(0);
+ arp_request();
return 1; /* waiting */
}
-static void ping_timeout(void)
+static void ping_timeout_handler(void)
{
eth_halt();
- NetState = NETLOOP_FAIL; /* we did not get the reply */
-}
-
-static void ping_handler(uchar *pkt, unsigned dest, IPaddr_t sip,
- unsigned src, unsigned len)
-{
- if (sip != NetPingIP)
- return;
-
- NetState = NETLOOP_SUCCESS;
+ 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);
- NetSetHandler(ping_handler);
+ net_set_timeout_handler(10000UL, ping_timeout_handler);
ping_send();
}
-void ping_receive(Ethernet_t *et, struct ip_udp_hdr *ip, int len)
+void ping_receive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len)
{
- ICMP_t *icmph = (ICMP_t *)&(ip->udp_src);
- IPaddr_t src_ip;
+ struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src;
+ struct in_addr src_ip;
+ int eth_hdr_size;
switch (icmph->type) {
case ICMP_ECHO_REPLY:
- /*
- * IP header OK. Pass the packet to the
- * current handler.
- */
- /* XXX point to ip packet */
- src_ip = NetReadIP((void *)&ip->ip_src);
- NetGetHandler()((uchar *)ip, 0, src_ip, 0, 0);
+ src_ip = net_read_ip((void *)&ip->ip_src);
+ if (src_ip.s_addr == net_ping_ip.s_addr)
+ net_set_state(NETLOOP_SUCCESS);
return;
case ICMP_ECHO_REQUEST:
- debug("Got ICMP ECHO REQUEST, return "
- "%d bytes\n", ETHER_HDR_SIZE + len);
+ eth_hdr_size = net_update_ether(et, et->et_src, PROT_IP);
- memcpy(&et->et_dest[0], &et->et_src[0], 6);
- memcpy(&et->et_src[0], NetOurEther, 6);
+ 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_NO_UDP >> 1);
+ net_copy_ip((void *)&ip->ip_dst, &ip->ip_src);
+ net_copy_ip((void *)&ip->ip_src, &net_ip);
+ ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE);
icmph->type = ICMP_ECHO_REPLY;
icmph->checksum = 0;
- icmph->checksum = ~NetCksum((uchar *)icmph,
- (len - IP_HDR_SIZE_NO_UDP) >> 1);
- (void) eth_send((uchar *)et,
- ETHER_HDR_SIZE + len);
+ icmph->checksum = compute_ip_checksum(icmph, len - IP_HDR_SIZE);
+ net_send_packet((uchar *)et, eth_hdr_size + len);
return;
/* default:
return;*/
projects / karo-tx-uboot.git / blobdiff