>>> The data sheet for intel 82576 advertises IP TX/RX checksum offload >>> but the driver does not set CSUM_IP in ifp->if_hwassist. Does this mean >>> that driver (and chip) do not support IP TX checksum offload or the >>> support for TX is not yet included in the driver? >> >> The first question is "is checksum offload a good idea?" >> There is less protection against errors. > > This assumes firmware flaws, right? Albeit, it also does confuse some > software like tcpdump.
"Unfortunately lots of high performance people use checksum offload which removes much of the end to end protection" Alan Cox http://kerneltrap.org/Linux/Data_Errors_During_Drive_Communication Bugs in the hardware/firmware/software are not required to have a problem, but if present would make things even worse. _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"