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Having a single place for cookie assignment and keeping that responsibility in the cfg80211 subsystem is a logical choice as it handles the userspace nl80211 API. add_nan_func already does this: cfg80211 calls cfg80211_assign_cookie() before invoking the driver. Apply the same pattern to remain_on_channel, mgmt_tx, probe_peer and tx_control_port by pre-assigning the cookie in the nl80211 command handlers before the rdev_* call. For tx_control_port the cookie is only pre-assigned when the caller requests an ack (cookie pointer non-NULL). Drivers may still overwrite the value for now; subsequent patches will remove per-driver cookie generation. Assisted-by: Claude:claude-sonnet-4-6 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com> Link: https://patch.msgid.link/20260731123509.1975281-2-arend.vanspriel@broadcom.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>