Hi Kaustubh, I think you missed out on a fix by just a couple of weeks -- see https://github.com/casper-astro/mlib_devel/commit/129937f7dba65f53db39b3fc0a0c968d2cacf9f6
Cheers Jack On Mon, 5 Sep 2016 at 10:00 Kaustubh Rajwade <rkaustub...@gmail.com> wrote: > Hi Jack, > > > Here are commits that I am using: > > Old library: commit a88c343 (16 Nov 2010) > > New library: commit ecab6f (2 Jan 2015) > > Cheers, > Kaustubh > > On Mon, Sep 5, 2016 at 6:07 PM, Jack Hickish <jackhick...@gmail.com> > wrote: > >> 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 >>> >> >
