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/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright (C) 2024-2025 Intel Corporation
*/
#ifndef __iwl_mld_mlo_h__
#define __iwl_mld_mlo_h__
#include <linux/ieee80211.h>
#include <linux/types.h>
#include <net/mac80211.h>
#include "iwl-config.h"
#include "iwl-trans.h"
#include "iface.h"
#include "phy.h"
struct iwl_mld;
void iwl_mld_emlsr_prevent_done_wk(struct wiphy *wiphy, struct wiphy_work *wk);
void iwl_mld_emlsr_tmp_non_bss_done_wk(struct wiphy *wiphy,
struct wiphy_work *wk);
static inline bool iwl_mld_emlsr_active(struct ieee80211_vif *vif)
{
/* Set on phy context activation, so should be a good proxy */
return !!(vif->driver_flags & IEEE80211_VIF_EML_ACTIVE);
}
static inline bool iwl_mld_vif_has_emlsr_cap(struct ieee80211_vif *vif)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
/* We only track/permit EMLSR state once authorized */
if (!mld_vif->authorized)
return false;
/* No EMLSR on dual radio devices */
return ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_STATION &&
ieee80211_vif_is_mld(vif) &&
vif->cfg.eml_cap & IEEE80211_EML_CAP_EMLSR_SUPP &&
!CSR_HW_RFID_IS_CDB(mld_vif->mld->trans->hw_rf_id);
}
static inline int
iwl_mld_max_active_links(struct iwl_mld *mld, struct ieee80211_vif *vif)
{
if (vif->type == NL80211_IFTYPE_AP)
return mld->fw->ucode_capa.num_beacons;
if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_STATION)
return IWL_FW_MAX_ACTIVE_LINKS_NUM;
/* For now, do not accept more links on other interface types */
return 1;
}
static inline int
iwl_mld_count_active_links(struct iwl_mld *mld, struct ieee80211_vif *vif)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
struct iwl_mld_link *mld_link;
int n_active = 0;
for_each_mld_vif_valid_link(mld_vif, mld_link) {
if (rcu_access_pointer(mld_link->chan_ctx))
n_active++;
}
return n_active;
}
static inline u8 iwl_mld_get_primary_link(struct ieee80211_vif *vif)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
lockdep_assert_wiphy(mld_vif->mld->wiphy);
if (!ieee80211_vif_is_mld(vif) || WARN_ON(!vif->active_links))
return 0;
/* In AP mode, there is no primary link */
if (vif->type == NL80211_IFTYPE_AP)
return __ffs(vif->active_links);
if (iwl_mld_emlsr_active(vif) &&
!WARN_ON(!(BIT(mld_vif->emlsr.primary) & vif->active_links)))
return mld_vif->emlsr.primary;
return __ffs(vif->active_links);
}
/*
* For non-MLO/single link, this will return the deflink/single active link,
* respectively
*/
static inline u8 iwl_mld_get_other_link(struct ieee80211_vif *vif, u8 link_id)
{
switch (hweight16(vif->active_links)) {
case 0:
return 0;
default:
WARN_ON(1);
fallthrough;
case 1:
return __ffs(vif->active_links);
case 2:
return __ffs(vif->active_links & ~BIT(link_id));
}
}
s8 iwl_mld_get_emlsr_rssi_thresh(struct iwl_mld *mld,
const struct cfg80211_chan_def *chandef,
bool low);
/* EMLSR block/unblock and exit */
void iwl_mld_block_emlsr(struct iwl_mld *mld, struct ieee80211_vif *vif,
enum iwl_mld_emlsr_blocked reason, u8 link_to_keep);
int iwl_mld_block_emlsr_sync(struct iwl_mld *mld, struct ieee80211_vif *vif,
enum iwl_mld_emlsr_blocked reason, u8 link_to_keep);
void iwl_mld_unblock_emlsr(struct iwl_mld *mld, struct ieee80211_vif *vif,
enum iwl_mld_emlsr_blocked reason);
void iwl_mld_exit_emlsr(struct iwl_mld *mld, struct ieee80211_vif *vif,
enum iwl_mld_emlsr_exit exit, u8 link_to_keep);
int iwl_mld_emlsr_check_non_bss_block(struct iwl_mld *mld,
int pending_link_changes);
void iwl_mld_handle_emlsr_mode_notif(struct iwl_mld *mld,
struct iwl_rx_packet *pkt);
void iwl_mld_handle_emlsr_trans_fail_notif(struct iwl_mld *mld,
struct iwl_rx_packet *pkt);
void iwl_mld_emlsr_check_tpt(struct wiphy *wiphy, struct wiphy_work *wk);
void iwl_mld_emlsr_unblock_tpt_wk(struct wiphy *wiphy, struct wiphy_work *wk);
void iwl_mld_select_links(struct iwl_mld *mld);
void iwl_mld_emlsr_check_bt(struct iwl_mld *mld);
void iwl_mld_emlsr_check_chan_load(struct ieee80211_hw *hw,
struct iwl_mld_phy *phy,
u32 prev_chan_load_not_by_us);
/**
* iwl_mld_retry_emlsr - Retry entering EMLSR
* @mld: MLD context
* @vif: VIF to retry EMLSR on
*
* Retry entering EMLSR on the given VIF.
* Use this if one of the parameters that can prevent EMLSR has changed.
*/
void iwl_mld_retry_emlsr(struct iwl_mld *mld, struct ieee80211_vif *vif);
struct iwl_mld_link_sel_data {
u8 link_id;
const struct cfg80211_chan_def *chandef;
s32 signal;
u16 grade;
};
#if IS_ENABLED(CONFIG_IWLWIFI_KUNIT_TESTS)
bool iwl_mld_channel_load_allows_emlsr(struct iwl_mld *mld,
struct ieee80211_vif *vif,
const struct iwl_mld_link_sel_data *a,
const struct iwl_mld_link_sel_data *b);
#endif
#endif /* __iwl_mld_mlo_h__ */
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