EM and TSO

Sam Leffler sam at errno.com
Wed May 16 23:27:39 UTC 2007

Jack Vogel wrote:
> You mean other than net.inet.tcp.tso that is there now?
> On 5/16/07, Julian Elischer <julian at elischer.org> wrote:
>> Jack Vogel wrote:
>> > On 5/16/07, Andre Oppermann <andre at freebsd.org> wrote:
>> >> Jack Vogel wrote:
>> >> > I introduced a change yesterday that limited TSO to PCI Express
>> >> > adapters, I did this more for avoidance rather than a bug fix, and
>> >> > I'm not 100% sure its the right thing, so I thought I would poll
>> >> > everyone, do you have a PCI-X adapter and are using TSO without
>> >> > problems and wish to keep the support in?
>> >>
>> >> I'm using the dual-port PCI-X adapter and would like to keep
>> >> using TSO on it.  There are a lot of those adapters out there
>> >> in servers.  TSO is scheduled to be MFC'd really soon now and
>> >> not having it work with em(4) on PCI-X would be quite limiting.
>> >
>> > OK, I'll put it back, you also answered a question I had, namely
>> > the MFC of TSO :) I was hoping that got into 6.3.
>> >
>> > I have another bug I'm working on, will be a delta today or tomorrow
>> > and I'll put it back to what it was.
>> >
>> > Jack
>> > _______________________________________________
>> > freebsd-net at freebsd.org mailing list
>> > http://lists.freebsd.org/mailman/listinfo/freebsd-net
>> > To unsubscribe, send any mail to "freebsd-net-unsubscribe at freebsd.org"
>> give a sysctl to change the option.

ifconfig can be used to ena/dis tso.  As I said before just give all the
devices capable of tso the capability but only enable it by default on
those devices you really know work (e.g. pci-e cards).  On other devices
users that want to turn it on can do so with ifconfig.


More information about the freebsd-current mailing list