On Fri, May 23, 2014 at 12:36 AM, k simon <[email protected]> wrote: > Hi,Lists, > I noticed that Pyun have fixed some bugs about TSO&.CHECKSUM offload > issues on FreeBSD recently. Does the same issues happend on Dfly ?
I don't aware we have any TSO and TX hardware CSUM issues. And I don't think our TSO, especially how TCP/IP stack hands TSO info to drivers and how many TCP segments should be contained in one "TSO packet" are completely different from FreeBSD's. Best Regards, sephe > > > Regards > Simon > > 于 14-4-18 10:12, k simon 写道: >> >> And I found lo0 reported bad checksum too. >> >> 于 14-4-18 9:38, k simon 写道: >>> >>> Hi,Matthew, >>> When it report bad checksum, the web pages can not opened. If >>> disabled the HW checksum, then it acts normally. I think it's a real >>> problem and I would take a bce card try again. >>> >>> Simon >>> >>> 于 14-4-18 2:02, Matthew Dillon 写道: >>>> >>>> Bad checksums reported by tcpdump are not necessarily actually bad. What >>>> is happening is that the checksum field is not updated when HW checksums >>>> are enabled... the code depends on the HW to tell it if the checksum is >>>> bad or not (on receive), and depends on the HW to generate the checksum >>>> (on transmit). So the packet in the mbuf which tcpdump is parsing may >>>> not have a filled-in checksum field. >>>> >>>> If you are getting actual communications glitches, e.g. pings not >>>> returning, tcp throughput problems, and so forth, then you might have a >>>> real problem. >>>> >>>> -Matt >>>> > -- Tomorrow Will Never Die
