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/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright (C) 2024-2025 Intel Corporation
*/
#ifndef __iwl_mld_iface_h__
#define __iwl_mld_iface_h__
#include <net/mac80211.h>
#include "link.h"
#include "session-protect.h"
#include "d3.h"
#include "fw/api/time-event.h"
enum iwl_mld_cca_40mhz_wa_status {
CCA_40_MHZ_WA_NONE,
CCA_40_MHZ_WA_RESET,
CCA_40_MHZ_WA_RECONNECT,
};
/**
* enum iwl_mld_emlsr_blocked - defines reasons for which EMLSR is blocked
*
* These blocks are applied/stored per-VIF.
*
* @IWL_MLD_EMLSR_BLOCKED_PREVENTION: Prevent repeated EMLSR enter/exit
* @IWL_MLD_EMLSR_BLOCKED_WOWLAN: WOWLAN is preventing EMLSR
* @IWL_MLD_EMLSR_BLOCKED_ROC: remain-on-channel is preventing EMLSR
* @IWL_MLD_EMLSR_BLOCKED_NON_BSS: An active non-BSS interface's link is
* preventing EMLSR
* @IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS: An expected active non-BSS interface's
* link is preventing EMLSR. This is a temporary blocking that is set when
* there is an indication that a non-BSS interface is to be added.
* @IWL_MLD_EMLSR_BLOCKED_TPT: throughput is too low to make EMLSR worthwhile
*/
enum iwl_mld_emlsr_blocked {
IWL_MLD_EMLSR_BLOCKED_PREVENTION = 0x1,
IWL_MLD_EMLSR_BLOCKED_WOWLAN = 0x2,
IWL_MLD_EMLSR_BLOCKED_ROC = 0x4,
IWL_MLD_EMLSR_BLOCKED_NON_BSS = 0x8,
IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS = 0x10,
IWL_MLD_EMLSR_BLOCKED_TPT = 0x20,
};
/**
* enum iwl_mld_emlsr_exit - defines reasons for exiting EMLSR
*
* Reasons to exit EMLSR may be either link specific or even specific to a
* combination of links.
*
* @IWL_MLD_EMLSR_EXIT_BLOCK: Exit due to a block reason being set
* @IWL_MLD_EMLSR_EXIT_MISSED_BEACON: Exit due to missed beacons
* @IWL_MLD_EMLSR_EXIT_FAIL_ENTRY: FW failed to enter EMLSR
* @IWL_MLD_EMLSR_EXIT_CSA: EMLSR prevented due to channel switch on link
* @IWL_MLD_EMLSR_EXIT_EQUAL_BAND: EMLSR prevented as both links share the band
* @IWL_MLD_EMLSR_EXIT_LOW_RSSI: Link RSSI is unsuitable for EMLSR
* @IWL_MLD_EMLSR_EXIT_LINK_USAGE: Exit EMLSR due to low TPT on secondary link
* @IWL_MLD_EMLSR_EXIT_BT_COEX: Exit EMLSR due to BT coexistence
* @IWL_MLD_EMLSR_EXIT_CHAN_LOAD: Exit EMLSR because the primary channel is not
* loaded enough to justify EMLSR.
* @IWL_MLD_EMLSR_EXIT_RFI: Exit EMLSR due to RFI
* @IWL_MLD_EMLSR_EXIT_FW_REQUEST: Exit EMLSR because the FW requested it
* @IWL_MLD_EMLSR_EXIT_INVALID: internal exit reason due to invalid data
*/
enum iwl_mld_emlsr_exit {
IWL_MLD_EMLSR_EXIT_BLOCK = 0x1,
IWL_MLD_EMLSR_EXIT_MISSED_BEACON = 0x2,
IWL_MLD_EMLSR_EXIT_FAIL_ENTRY = 0x4,
IWL_MLD_EMLSR_EXIT_CSA = 0x8,
IWL_MLD_EMLSR_EXIT_EQUAL_BAND = 0x10,
IWL_MLD_EMLSR_EXIT_LOW_RSSI = 0x20,
IWL_MLD_EMLSR_EXIT_LINK_USAGE = 0x40,
IWL_MLD_EMLSR_EXIT_BT_COEX = 0x80,
IWL_MLD_EMLSR_EXIT_CHAN_LOAD = 0x100,
IWL_MLD_EMLSR_EXIT_RFI = 0x200,
IWL_MLD_EMLSR_EXIT_FW_REQUEST = 0x400,
IWL_MLD_EMLSR_EXIT_INVALID = 0x800,
};
/**
* struct iwl_mld_emlsr - per-VIF data about EMLSR operation
*
* @primary: The current primary link
* @selected_primary: Primary link as selected during the last link selection
* @selected_links: Links as selected during the last link selection
* @blocked_reasons: Reasons preventing EMLSR from being enabled
* @last_exit_reason: Reason for the last EMLSR exit
* @last_exit_ts: Time of the last EMLSR exit (if @last_exit_reason is non-zero)
* @exit_repeat_count: Number of times EMLSR was exited for the same reason
* @last_entry_ts: the time of the last EMLSR entry (if iwl_mld_emlsr_active()
* is true)
* @unblock_tpt_wk: Unblock EMLSR because the throughput limit was reached
* @check_tpt_wk: a worker to check if IWL_MLD_EMLSR_BLOCKED_TPT should be
* added, for example if there is no longer enough traffic.
* @prevent_done_wk: Worker to remove %IWL_MLD_EMLSR_BLOCKED_PREVENTION
* @tmp_non_bss_done_wk: Worker to remove %IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS
*/
struct iwl_mld_emlsr {
struct_group(zeroed_on_not_authorized,
u8 primary;
u8 selected_primary;
u16 selected_links;
enum iwl_mld_emlsr_blocked blocked_reasons;
enum iwl_mld_emlsr_exit last_exit_reason;
unsigned long last_exit_ts;
u8 exit_repeat_count;
unsigned long last_entry_ts;
);
struct wiphy_work unblock_tpt_wk;
struct wiphy_delayed_work check_tpt_wk;
struct wiphy_delayed_work prevent_done_wk;
struct wiphy_delayed_work tmp_non_bss_done_wk;
};
/**
* struct iwl_mld_vif - virtual interface (MAC context) configuration parameters
*
* @fw_id: fw id of the mac context.
* @session_protect: session protection parameters
* @ap_sta: pointer to AP sta, for easier access to it.
* Relevant only for STA vifs.
* @authorized: indicates the AP station was set to authorized
* @bigtks: BIGTKs of the AP, for beacon protection.
* Only valid for STA. (FIXME: needs to be per link)
* @num_associated_stas: number of associated STAs. Relevant only for AP mode.
* @ap_ibss_active: whether the AP/IBSS was started
* @cca_40mhz_workaround: When we are connected in 2.4 GHz and 40 MHz, and the
* environment is too loaded, we work around this by reconnecting to the
* same AP with 20 MHz. This manages the status of the workaround.
* @beacon_inject_active: indicates an active debugfs beacon ie injection
* @low_latency_causes: bit flags, indicating the causes for low-latency,
* see @iwl_mld_low_latency_cause.
* @ps_disabled: indicates that PS is disabled for this interface
* @mld: pointer to the mld structure.
* @deflink: default link data, for use in non-MLO,
* @link: reference to link data for each valid link, for use in MLO.
* @emlsr: information related to EMLSR
* @wowlan_data: data used by the wowlan suspend flow
* @use_ps_poll: use ps_poll frames
* @disable_bf: disable beacon filter
* @dbgfs_slink: debugfs symlink for this interface
* @roc_activity: the id of the roc_activity running. Relevant for STA and
* p2p device only. Set to %ROC_NUM_ACTIVITIES when not in use.
* @aux_sta: station used for remain on channel. Used in P2P device.
*/
struct iwl_mld_vif {
/* Add here fields that need clean up on restart */
struct_group(zeroed_on_hw_restart,
u8 fw_id;
struct iwl_mld_session_protect session_protect;
struct ieee80211_sta *ap_sta;
bool authorized;
struct ieee80211_key_conf __rcu *bigtks[2];
u8 num_associated_stas;
bool ap_ibss_active;
enum iwl_mld_cca_40mhz_wa_status cca_40mhz_workaround;
#ifdef CONFIG_IWLWIFI_DEBUGFS
bool beacon_inject_active;
#endif
u8 low_latency_causes;
bool ps_disabled;
);
/* And here fields that survive a fw restart */
struct iwl_mld *mld;
struct iwl_mld_link deflink;
struct iwl_mld_link __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
struct iwl_mld_emlsr emlsr;
#ifdef CONFIG_PM_SLEEP
struct iwl_mld_wowlan_data wowlan_data;
#endif
#ifdef CONFIG_IWLWIFI_DEBUGFS
bool use_ps_poll;
bool disable_bf;
struct dentry *dbgfs_slink;
#endif
enum iwl_roc_activity roc_activity;
struct iwl_mld_int_sta aux_sta;
};
static inline struct iwl_mld_vif *
iwl_mld_vif_from_mac80211(struct ieee80211_vif *vif)
{
return (void *)vif->drv_priv;
}
#define iwl_mld_link_dereference_check(mld_vif, link_id) \
rcu_dereference_check((mld_vif)->link[link_id], \
lockdep_is_held(&mld_vif->mld->wiphy->mtx))
#define for_each_mld_vif_valid_link(mld_vif, mld_link) \
for (int link_id = 0; link_id < ARRAY_SIZE((mld_vif)->link); \
link_id++) \
if ((mld_link = iwl_mld_link_dereference_check(mld_vif, link_id)))
/* Retrieve pointer to mld link from mac80211 structures */
static inline struct iwl_mld_link *
iwl_mld_link_from_mac80211(struct ieee80211_bss_conf *bss_conf)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(bss_conf->vif);
return iwl_mld_link_dereference_check(mld_vif, bss_conf->link_id);
}
int iwl_mld_mac80211_iftype_to_fw(const struct ieee80211_vif *vif);
/* Cleanup function for struct iwl_mld_vif, will be called in restart */
void iwl_mld_cleanup_vif(void *data, u8 *mac, struct ieee80211_vif *vif);
int iwl_mld_mac_fw_action(struct iwl_mld *mld, struct ieee80211_vif *vif,
u32 action);
int iwl_mld_add_vif(struct iwl_mld *mld, struct ieee80211_vif *vif);
int iwl_mld_rm_vif(struct iwl_mld *mld, struct ieee80211_vif *vif);
void iwl_mld_set_vif_associated(struct iwl_mld *mld,
struct ieee80211_vif *vif);
u8 iwl_mld_get_fw_bss_vifs_ids(struct iwl_mld *mld);
void iwl_mld_handle_probe_resp_data_notif(struct iwl_mld *mld,
struct iwl_rx_packet *pkt);
void iwl_mld_handle_datapath_monitor_notif(struct iwl_mld *mld,
struct iwl_rx_packet *pkt);
void iwl_mld_handle_uapsd_misbehaving_ap_notif(struct iwl_mld *mld,
struct iwl_rx_packet *pkt);
void iwl_mld_reset_cca_40mhz_workaround(struct iwl_mld *mld,
struct ieee80211_vif *vif);
static inline bool iwl_mld_vif_low_latency(const struct iwl_mld_vif *mld_vif)
{
return !!mld_vif->low_latency_causes;
}
struct ieee80211_vif *iwl_mld_get_bss_vif(struct iwl_mld *mld);
#endif /* __iwl_mld_iface_h__ */
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