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Altera_Forum's avatar
Altera_Forum
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11 years ago

UDP packets via TSE

Hi, I am working on a project that requires me to send data packets from DE2-115 to a PC. since I need a transfer rate in access of 500 Mbps, i decided to do it using Ethernet using Triple Speed Ethe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

found the problem. had to change the line: 

ip->iph_len = Tx_UDPpayloadlength + sizeof(struct ipheader) + sizeof(struct udpheader);

to 

ip->iph_len = htons(Tx_UDPpayloadlength + sizeof(struct ipheader) + sizeof(struct udpheader));

silly me, wasted the entire 2 days solving this !!

hopefully this code will help others to make a upd TX :)

also, i just realized, if you are not plugging in the device to a hub but sending directly to PC via cross over cable, you donot need to add the ip and udp header. just sending the data with its MAC header will allow you to capture the packet using a network sniffing code that binds to the network device.