On Mon, 10 Dec 2007 15:32:14 +0100 Ariane Keller <[EMAIL PROTECTED]> wrote:
> I finally managed to rewrite the netem trace extension to use rtnetlink > communication for the data transfer for user space to kernel space. > > The kernel patch is available here: > http://www.tcn.hypert.net/tcn_kernel_2_6_23_rtnetlink > > and the iproute patch is here: > http://www.tcn.hypert.net/tcn_iproute2_2_6_23_rtnetlink > > Whenever new data is needed the kernel module sends a notification to > the user space process. Thereupon the user space process sends a data > package to the kernel module. I wonder if it wouldn't be possible to enhance/extend netlink to use sendfile/splice to get the data. It is rather more work than needed for just this, but it would be useful for large configuration. > I had to write a new qdisc_notify function (qdisc_notify_pid) since the > other was acquiring a lock, which we already hold in this situation. > I hope everything works as expected and I'm looking forward for your > comments. > > Thanks! > Ariane -- Stephen Hemminger <[EMAIL PROTECTED]> -- 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
