Hi Kaustubh, What version of the mlib_devel libraries are you using?
Cheers, Jack On Mon, 5 Sep 2016 at 08:11 Kaustubh Rajwade <rkaustub...@gmail.com> wrote: > Hi Casperites, > > I have a simple ROACH 1 design streaming packets via two 10GbE ports > (clock:160 MHz). When I compile the design using old libraries (XSG: 11.4, > Matlab 2009), I have no issues in receiving packets via sockets. When I > compile the same design using newer libraries (XSG:14.7, Matlab2013a), I > can receive packets via tcpdump but I get bad checksum and I cannot capture > the packets using standard methods (e.g. recvfrom()). An example of the > checksum error is shown below: > > > > > > > > > *tcpdump: listening on eth2, link-type EN10MB (Ethernet), capture size > 262144 bytes16:04:58.998384 02:02:0a:00:00:1f > 00:25:90:63:13:ac, > ethertype IPv4 (0x0800), length 8242: (tos 0x0, ttl 255, id 0, offset 0, > flags [DF], proto UDP (17), length 8228, bad cksum 63a8 (->47a0)!) > 10.0.0.31.48400 > 10.0.0.10.48500: [no cksum] UDP, length 8200 > 0x0000: 0025 9063 13ac 0202 0a00 001f 0800 4500 0x0010: 2024 0000 > 4000 ff11 63a8 0a00 001f 0a00 0x0020: 000a bd10 bd74 2010 0000 0000 > 0027 8734* > I validated the payload in the udp packets by sending counter values. > > Has anyone experienced this issue before? > > Cheers, > Kaustubh >
