Terry Lambert writes: > Jonathan Lemon wrote: > > >I'm trying to use the TCP&IP checksum offload capability of the Netgear > > >GA620 NIC from a SMP FreeBSD 4.2R system running on a typical PIII SBC. <..> > > He didn't say his packet size, either. > > To the original poster: if you are sending jumbograms, the > buffer size on these cards is limited, so the entire packet > can't be in the card buffer at the same time, which means > that you can not offload the send checksum for jumbograms, > only for regular sized packets.
This is an Alteon Tigon-2 (ti driver) based card with 512K of sram on board. It has plenty of space for offloading transmit checksums on jumbo frames. Perhaps you're thinking of the DP83820/DP83821 (nge driver), which cannot compute the checksum on an outgoing frame unless it fits in the 8K tx fifo. I think NetGear sells a card with a similar name (GA622T) based around this chip. Drew To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
