On Wed, Apr 02, 2003 at 03:47:35PM -0500, Dennis Cook wrote: > What I was looking for is a general capability to keep the SW transport > stack from > computing outgoing TCP/UDP/IP checksums so that the HW can be allowed to do > it, > similar to Windows checksum offload capability. If you are not using sendfile(2), it is _more expensive_ to offload checksums, because we already checksum and copy at the same time. Hardware checksum offload is only a win when a copy is eliminated. Therefore, _always_ offloading checksum is actually slower in some cases, because of the unneeded additional HW csum setup that would be performed. Jeff -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
