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