[PATCH net-next 11/15] net: lan969x: add function for calculating the DSM calendar
Maxime Chevallier
maxime.chevallier at bootlin.com
Mon Oct 21 10:51:40 PDT 2024
Hi Daniel,
On Mon, 21 Oct 2024 15:58:48 +0200
Daniel Machon <daniel.machon at microchip.com> wrote:
> Lan969x has support for RedBox / HSR / PRP (not implemented yet). In
> order to accommodate for this in the future, we need to give lan969x it's
> own function for calculating the DSM calendar.
>
> The function calculates the calendar for each taxi bus. The calendar is
> used for bandwidth allocation towards the ports attached to the taxi
> bus. A calendar configuration consists of up-to 64 slots, which may be
> allocated to ports or left unused. Each slot accounts for 1 clock cycle.
>
> Also expose sparx5_cal_speed_to_value(), sparx5_get_port_cal_speed,
> sparx5_cal_bw and SPX5_DSM_CAL_EMPTY for use by lan969x.
>
> Reviewed-by: Steen Hegelund <Steen.Hegelund at microchip.com>
> Signed-off-by: Daniel Machon <daniel.machon at microchip.com>
[...]
> + /* Place the remaining devices */
> + for (u32 i = 0; i < DSM_CAL_DEV_MAX; i++) {
> + speed = &dev_speeds[i];
> + for (u32 dev = 0; dev < speed->n_devs; dev++) {
> + u32 idx = 0;
> +
> + for (n_slots = 0; n_slots < speed->n_slots; n_slots++) {
> + lan969x_dsm_cal_idx_find_next_free(data->schedule,
> + cal_len,
> + &idx);
You're not checking the return of lan969x_dsm_cal_idx_find_next_free(),
can this be a problem ?
Thanks,
Maxime
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