[PATCH] sched: fix wrr parameter data type

[Stephen Hemminger]

On Thu, 18 Sep 2025 08:16:09 +0530
Megha Ajmera <megha.ajmera at intel.com> wrote:

> wrr tokens getting truncated to uint8_t in wrr_store function() due to
> type mismatch. This patch changes the data type to uint16_t.
> 
> Fixes: e16b06da0908 ("sched: remove WRR from strict priority TC queues")
> 
> Signed-off-by: Megha Ajmera <megha.ajmera at intel.com>
> Acked-by: Jasvinder Singh <Jasvinder.singh at intel.com>

The pipe tokens are updated in grinder_wrr_store by:

	pipe->wrr_tokens[0] =
			(grinder->wrr_tokens[0] & grinder->wrr_mask[0]) >>
				RTE_SCHED_WRR_SHIFT;

The token in rte_sched_grinder is uint16_t.
The mask value in wrr_mask is either 0 or 0xffff.
The shift is 3.
Therefore the range of pipe tokens is 0xffff >> 3 = 1FFF

The sched code is severely under commented and overly complex.
The patch looks right.

Acked-by: Stephen Hemminger <stephen at networkplumber.org>