Hi Frank, No plans to use (private) MDT, for all the reasons that Peter and Roamer put forward on this thread. MAX LSO size supported by the hardware is 512K.
Cheers, Leonid > -----Original Message----- > From: Francesco DiMambro [mailto:[EMAIL PROTECTED] > Sent: Friday, May 30, 2008 6:46 PM > To: Leonid Grossman > Cc: [EMAIL PROTECTED]; [email protected]; Yunsong > (Roamer) Lu > Subject: Re: [networking-discuss] LRO Implementation. > > Hi Leonid > There you are you can use MDT as well, that's in Solaris 10 and 11, > for TCP and UDP, It's also in Solaris 9 but an older incarnation. > What's the MAX LSO your chip can do? If it has the common 64K > limit, then you would benefit from MDT as well. I agree about the > UDP market, it would be good to get the software interface for LSO into > Solaris as well, but for those who have hardware that hasn't got LSO > built in then they can use MDT, and for the Solaris install base which is > Solaris 10 now you can get the benefits of MDT in TCP/UDP now. > > cheers > Frank > > Leonid Grossman wrote: > > Neterion x3100 10GbE ASIC supports UDP LSO in hardware (x3100 is > > announced but not generally available yet). > > > > Shipping Xframe-II and Xframe-E 10GbE NICs support somewhat different > > version of hw UDP offload (known as UFO :-)); currently it is > > productized in Linux and some other OSes, but not in Solaris. > > > > Overall, expanding Solaris LSO to support UDP (in addition to TCP) will > > be very worthwhile; we can help to debug and get it working as soon as > > Solaris stack code is ready. > > > > UDP market is likely to grow (due to video streaming market, and general > > improvement in datacenter Ethernet); having generic TCP/UDP LSO support > > will be a good thing. > > > > Cheers, Leonid > > > > > >> -----Original Message----- > >> From: [EMAIL PROTECTED] [mailto:networking- > >> [EMAIL PROTECTED] On Behalf Of Peter Memishian > >> Sent: Friday, May 30, 2008 4:03 PM > >> To: Francesco DiMambro > >> Cc: [email protected]; Yunsong (Roamer) Lu; > >> [EMAIL PROTECTED] > >> Subject: Re: [networking-discuss] LRO Implementation. > >> > >> > >> > LSO doesn't work as well as MDT, Also the hardware I'm working > >> > > with > > > >> > has no UDP LSO capability, does any? > >> > >> I don't see any support in our UDP module for MDT. Others more > >> > > familiar > > > >> with the latest hardware could speak to the UDP LSO question, but I'd > >> heard rumors that some Neterion ASICs could do it. > >> > >> -- > >> meem > >> _______________________________________________ > >> networking-discuss mailing list > >> [email protected] > >> _______________________________________________ networking-discuss mailing list [email protected]
