Thanks for the response. Instead of making changes to my application to use sendfile(..), is it possible for me to enable zerocopy in 2.4.19 kernel (using a patch or something) so that tx checksum can be offloaded to the h/w for every TCP packet? Thanks Manish --- "David S. Miller" <davem@redhat.com> wrote: > From: Manish Lachwani <m_lachwani@yahoo.com> > Date: Wed, 4 Sep 2002 07:34:57 -0700 (PDT) > > I am trying to implement the TCP checksum offload > support using Intel e1000/3com 3c996b-t in Linux > 2.4.19. Does this version of the kernel support > transmit h/w checksum offloading? Is there any > patch I > need to apply to the driver or kernel to get this > feature to work? > > It's already supported for e1000 cards. > > Perhaps you are using only normal send/sendmsg/write > system calls to send data over sockets, in that case > TX checksum offload isn't used (there is no gain). > > It starts getting used once you start using > sendfile() > to transmit your data. > - > : send the line > "unsubscribe linux-net" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html __________________________________________________ Do You Yahoo!? Yahoo! Finance - Get real-time stock quotes http://finance.yahoo.com - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
