From: Glenn Griffin <[EMAIL PROTECTED]> Date: Fri, 15 Feb 2008 09:47:08 -0800
> Introduce the ability to send arbitrary initial tcp timestamps that are not > tied directly to jiffies. The basic conecpt is every tcp_request_sock and > tcp_sock now has a ts_off offset that represents the difference between > tcp_time_stamp and the timestamp we send and expect to > receive. > > This has the advantage of not divulging system information (uptime) > depending on the policy chosen for the initial timestamps. > > A policy where ts_off is always set to zero should produce no change in > behavior. The policy implemented is not intended for real use, but just as > a simple example. A realistic example would probably be similar to the tcp > init sequence generator. > > Signed-off-by: Glenn Griffin <[EMAIL PROTECTED]> Adding yet another member to the already bloated tcp_sock structure to implement this is too high a cost. I would instead prefer that there be some global random number calculated when the first TCP socket is created, and use that as a global offset. You can even recompute it every few hours if you like. We do similar things already elsewhere. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
