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Re: [PATCH v3 1/1] wifi: nl80211: Add PTK/GTK rekey interval attributes for APs supporting PSK offload

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>That doesn't work, _all_ current drivers will obviously completely
ignore this setting.
Got your point - without this user space will not be sure whether GTK/PTK will work with the driver even though values are passed down. Will add it.


>Why can you not set both at the same time?!
Yes, agree. will fix it.

Jithu Jance 


On Sat, Nov 25, 2023 at 12:33 AM Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote:
On Mon, 2023-11-13 at 18:17 +0530, Jithu Jance wrote:
> This patch adds attributes to NL80211_CMD_START_AP that the user application
> can use to pass down PTK/GTK rekey interval times to the driver. If driver can't
> support the configuration, it is expected to return failure to NL8011_CMD_START_AP.

That doesn't work, _all_ current drivers will obviously completely
ignore this setting. If you need that behaviour, you need to add new
feature flags for it.

> +             if (info->attrs[NL80211_ATTR_PTK_REKEY_INTERVAL])
> +                     settings->ptk_rekey_interval = nla_get_u32(info->attrs[NL80211_ATTR_PTK_REKEY_INTERVAL]);
> +             else
> +                     settings->gtk_rekey_interval = nla_get_u32(info->attrs[NL80211_ATTR_GTK_REKEY_INTERVAL]);
>

Why can you not set both at the same time?! That should be documented,
if it's really desired, but that seems really counter-intuitive?

johannes

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