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103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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/*
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* Copyright (C) 2024-2025 Intel Corporation
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*/
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#ifndef __session_protect_h__
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#define __session_protect_h__
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#include "mld.h"
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#include "hcmd.h"
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#include <net/mac80211.h>
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#include "fw/api/mac-cfg.h"
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/**
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* DOC: session protection
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*
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* Session protection is an API from the firmware that allows the driver to
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* request time on medium. This is needed before the association when we need
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* to be on medium for the association frame exchange. Once we configure the
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* firmware as 'associated', the firmware will allocate time on medium without
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* needed a session protection.
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*
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* TDLS discover uses this API as well even after association to ensure that
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* other activities internal to the firmware will not interrupt our presence
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* on medium.
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*/
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/**
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* struct iwl_mld_session_protect - session protection parameters
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* @end_jiffies: expected end_jiffies of current session protection.
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* 0 if not active
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* @duration: the duration in tu of current session
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* @session_requested: A session protection command was sent and wasn't yet
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* answered
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*/
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struct iwl_mld_session_protect {
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unsigned long end_jiffies;
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u32 duration;
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bool session_requested;
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};
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#define IWL_MLD_SESSION_PROTECTION_ASSOC_TIME_MS 900
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#define IWL_MLD_SESSION_PROTECTION_MIN_TIME_MS 400
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/**
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* iwl_mld_handle_session_prot_notif - handles %SESSION_PROTECTION_NOTIF
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* @mld: the mld component
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* @pkt: the RX packet containing the notification
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*/
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void iwl_mld_handle_session_prot_notif(struct iwl_mld *mld,
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struct iwl_rx_packet *pkt);
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/**
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* iwl_mld_schedule_session_protection - schedule a session protection
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* @mld: the mld component
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* @vif: the virtual interface for which the protection issued
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* @duration: the requested duration of the protection
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* @min_duration: the minimum duration of the protection
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* @link_id: The link to schedule a session protection for
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*/
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void iwl_mld_schedule_session_protection(struct iwl_mld *mld,
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struct ieee80211_vif *vif,
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u32 duration, u32 min_duration,
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int link_id);
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/**
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* iwl_mld_start_session_protection - start a session protection
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* @mld: the mld component
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* @vif: the virtual interface for which the protection issued
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* @duration: the requested duration of the protection
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* @min_duration: the minimum duration of the protection
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* @link_id: The link to schedule a session protection for
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* @timeout: timeout for waiting
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*
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* This schedules the session protection, and waits for it to start
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* (with timeout)
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*
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* Returns: 0 if successful, error code otherwise
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*/
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int iwl_mld_start_session_protection(struct iwl_mld *mld,
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struct ieee80211_vif *vif,
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u32 duration, u32 min_duration,
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int link_id, unsigned long timeout);
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/**
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* iwl_mld_cancel_session_protection - cancel the session protection.
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* @mld: the mld component
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* @vif: the virtual interface for which the session is issued
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* @link_id: cancel the session protection for given link
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*
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* This functions cancels the session protection which is an act of good
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* citizenship. If it is not needed any more it should be canceled because
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* the other mac contexts wait for the medium during that time.
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*
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* Returns: 0 if successful, error code otherwise
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*
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*/
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int iwl_mld_cancel_session_protection(struct iwl_mld *mld,
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struct ieee80211_vif *vif,
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int link_id);
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#endif /* __session_protect_h__ */
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