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Add UPD-Checksum code, fix problem in net.c (return instead of break)

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Patch by Reinhard Arlt, 12 Aug 2005
This commit is contained in:
Stefan Roese 2005-08-12 20:06:52 +02:00
parent 5315dfa9d1
commit 8534bf9ac0
2 changed files with 45 additions and 2 deletions
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3
CHANGELOG
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@ -2,6 +2,9 @@
Changes for U-Boot 1.1.3:
======================================================================
* Add UPD-Checksum code, fix problem in net.c (return instead of break)
Patch by Reinhard Arlt, 12 Aug 2005
* esd PCI405 board updated
Patch by Matthias Fuchs, 28 Jul 2005

44
net/net.c
View File

@ -1410,7 +1410,7 @@ NetReceive(volatile uchar * inpkt, int len)
puts (" ICMP Host Redirect to ");
print_IPaddr(icmph->un.gateway);
putc(' ');
break;
return;
#if (CONFIG_COMMANDS & CFG_CMD_PING)
case ICMP_ECHO_REPLY:
/*
@ -1418,7 +1418,7 @@ NetReceive(volatile uchar * inpkt, int len)
*/
/* XXX point to ip packet */
(*packetHandler)((uchar *)ip, 0, 0, 0);
break;
return;
#endif
default:
return;
@ -1427,6 +1427,46 @@ NetReceive(volatile uchar * inpkt, int len)
return;
}
#ifdef CONFIG_UDP_CHECKSUM
if (ip->udp_xsum != 0) {
ulong xsum;
ushort *sumptr;
ushort sumlen;
xsum = ip->ip_p;
xsum += (ntohs(ip->udp_len));
xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff;
xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff;
xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff;
xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff;
sumlen = ntohs(ip->udp_len);
sumptr = (ushort *) &(ip->udp_src);
while (sumlen > 1) {
ushort sumdata;
sumdata = *sumptr++;
xsum += ntohs(sumdata);
sumlen -= 2;
}
if (sumlen > 0) {
ushort sumdata;
sumdata = *(unsigned char *) sumptr;
sumdata = (sumdata << 8) & 0xff00;
xsum += sumdata;
}
while ((xsum >> 16) != 0) {
xsum = (xsum & 0x0000ffff) + ((xsum >> 16) & 0x0000ffff);
}
if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
printf(" UDP wrong checksum %08x %08x\n", xsum, ntohs(ip->udp_xsum));
return;
}
}
#endif
#ifdef CONFIG_NETCONSOLE
nc_input_packet((uchar *)ip +IP_HDR_SIZE,
ntohs(ip->udp_dst),