[Codel] [PATCH v9] codel: Controlled Delay AQM

[Eric Dumazet]

On Sun, 2012-05-06 at 22:35 -0700, Dave Täht wrote:
> This version (9) adds support for various forms of decrease in s3,
> in the form of the module parameters gentle and decrease_method.
> 
> It defaults to the algorithm as described in the original presentation.
> 
> v1: Original implementation - Dave Taht
> v2: Working code - Corrections for ktime - Dave Taht
> v3: 32 bit support and port to net-next - Eric Dumazet
> v4: 16 bit precision for inv sqrt and cache - Dave Taht
> v5: Kernel cleanup and full precision - Eric Dumazet
> v6: Dump Stats support added - Eric Dumazet
> v7: Complete rewrite for u32 values - Eric Dumazet
> v8: Stats and timing added, 64 bit prescale improved - Eric Dumazet
> v9: debated functionality moved to isolated routine - Dave Taht
> ---

> +static u32 gentle = 0;
> +static u32 decrease_method = 0;
> +module_param(gentle, uint, 0644);
> +module_param(decrease_method, uint, 0644);
> +MODULE_PARM_DESC(gentle,"Gently increment count in massive drop state");
> +MODULE_PARM_DESC(decrease_method,"Various means of decreasing count");

Hey, thats absolutely forbidden.

Just add new TCA_CODEL_xxx knobs to control things with tc, for each
qdisc, and not globally on the machine.