How about another way of controlling this via sysctl. First, add code to for read only: /proc/sys/net/ipv4/tcp_available_congestion_control (or shorter name) this will show all things compiled in (even if not loaded yet). Similar to /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
Second, add flag (allowed) to the tcp_congestion structure [inverse of earlier restricted] Third, add read-write /proc/sys/net/ipv4/tcp_allowed_congestion_control to show and set/clear the allowed flag. Default value would be "reno xxx" where xxx is what ever the default value from the kernel config is (currently cubic). I would use sysfs for this, but it make sense not to spread TCP stuff into both sysctl and sysfs. - 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