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- udp packet checksum generation fixed

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This commit is contained in:
Volker Ruppert 2004-10-13 19:42:25 +00:00
parent bd8b677bd6
commit c7f205a6e9
1 changed files with 8 additions and 8 deletions
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16
bochs/iodev/eth_vnet.cc
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: eth_vnet.cc,v 1.10 2004-10-07 17:38:03 vruppert Exp $
// $Id: eth_vnet.cc,v 1.11 2004-10-13 19:42:25 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// virtual Ethernet locator
@ -685,17 +685,18 @@ bx_vnet_pktmover_c::host_to_guest_udpipv4_packet(
}
// udp pseudo-header
memcpy(&ipbuf[34U-12U],host_ipv4addr,4);
memcpy(&ipbuf[34U-8U],guest_ipv4addr,4);
ipbuf[34U-4U]=0;
ipbuf[34U-3U]=0x11; // UDP
put_net2(&ipbuf[34U-2U],8U+udpdata_len);
ipbuf[34U-12U]=0;
ipbuf[34U-11U]=0x11; // UDP
put_net2(&ipbuf[34U-10U],8U+udpdata_len);
memcpy(&ipbuf[34U-8U],host_ipv4addr,4);
memcpy(&ipbuf[34U-4U],guest_ipv4addr,4);
// udp header
put_net2(&ipbuf[34U+0],source_port);
put_net2(&ipbuf[34U+2],target_port);
put_net2(&ipbuf[34U+4],8U+udpdata_len);
put_net2(&ipbuf[34U+6],0);
put_net2(&ipbuf[34U+6], ip_checksum(&ipbuf[34U-12U],12U+8U+udpdata_len));
memcpy(&ipbuf[42U],udpdata,udpdata_len);
put_net2(&ipbuf[34U+6], ip_checksum(&ipbuf[34U-12U],12U+8U+udpdata_len) ^ (Bit16u)0xffff);
// ip header
memset(&ipbuf[14U],0,20U);
ipbuf[14U+0] = 0x45;
@ -706,7 +707,6 @@ bx_vnet_pktmover_c::host_to_guest_udpipv4_packet(
ipbuf[14U+7] = 0x00;
ipbuf[14U+8] = 0x07; // TTL
ipbuf[14U+9] = 0x11; // UDP
memcpy(&ipbuf[42U],udpdata,udpdata_len);
host_to_guest_ipv4(ipbuf,udpdata_len + 42U);
}