1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ 2 /* 3 * Copyright (C) 2024-2025 Intel Corporation 4 */ 5 #ifndef __iwl_mld_link_h__ 6 #define __iwl_mld_link_h__ 7 8 #include <net/mac80211.h> 9 10 #include "mld.h" 11 #include "sta.h" 12 13 /** 14 * struct iwl_probe_resp_data - data for NoA/CSA updates 15 * @rcu_head: used for freeing the data on update 16 * @notif: notification data 17 * @noa_len: length of NoA attribute, calculated from the notification 18 */ 19 struct iwl_probe_resp_data { 20 struct rcu_head rcu_head; 21 struct iwl_probe_resp_data_notif notif; 22 int noa_len; 23 }; 24 25 /** 26 * struct iwl_mld_link - link configuration parameters 27 * 28 * @rcu_head: RCU head for freeing this data. 29 * @fw_id: the fw id of the link. 30 * @active: if the link is active or not. 31 * @queue_params: QoS data from mac80211. This is updated with a call to 32 * drv_conf_tx per each AC, and then notified once with BSS_CHANGED_QOS. 33 * So we store it here and then send one link cmd for all the ACs. 34 * @chan_ctx: pointer to the channel context assigned to the link. If a link 35 * has an assigned channel context it means that it is active. 36 * @he_ru_2mhz_block: 26-tone RU OFDMA transmissions should be blocked. 37 * @igtk: fw can only have one IGTK at a time, whereas mac80211 can have two. 38 * This tracks the one IGTK that currently exists in FW. 39 * @vif: the vif this link belongs to 40 * @bcast_sta: station used for broadcast packets. Used in AP, GO and IBSS. 41 * @mcast_sta: station used for multicast packets. Used in AP, GO and IBSS. 42 * @aux_sta: station used for remain on channel. Used in P2P device. 43 * @link_id: over the air link ID 44 * @ap_early_keys: The firmware cannot install keys before bcast/mcast STAs, 45 * but higher layers work differently, so we store the keys here for 46 * later installation. 47 * @silent_deactivation: next deactivation needs to be silent. 48 * @probe_resp_data: data from FW notification to store NOA related data to be 49 * inserted into probe response. 50 * @rx_omi: data for BW reduction with OMI 51 * @rx_omi.bw_in_progress: update is in progress (indicates target BW) 52 * @rx_omi.exit_ts: timestamp of last exit 53 * @rx_omi.finished_work: work for the delayed reaction to the firmware saying 54 * the change was applied, and for then applying a new mode if it was 55 * updated while waiting for firmware/AP settle delay. 56 * @rx_omi.desired_bw: desired bandwidth 57 * @rx_omi.last_max_bw: last maximum BW used by firmware, for AP BW changes 58 */ 59 struct iwl_mld_link { 60 struct rcu_head rcu_head; 61 62 /* Add here fields that need clean up on restart */ 63 struct_group(zeroed_on_hw_restart, 64 u8 fw_id; 65 bool active; 66 struct ieee80211_tx_queue_params queue_params[IEEE80211_NUM_ACS]; 67 struct ieee80211_chanctx_conf __rcu *chan_ctx; 68 bool he_ru_2mhz_block; 69 struct ieee80211_key_conf *igtk; 70 ); 71 /* And here fields that survive a fw restart */ 72 struct ieee80211_vif *vif; 73 struct iwl_mld_int_sta bcast_sta; 74 struct iwl_mld_int_sta mcast_sta; 75 struct iwl_mld_int_sta aux_sta; 76 u8 link_id; 77 78 struct { 79 struct wiphy_delayed_work finished_work; 80 unsigned long exit_ts; 81 enum ieee80211_sta_rx_bandwidth bw_in_progress, 82 desired_bw, 83 last_max_bw; 84 } rx_omi; 85 86 /* we can only have 2 GTK + 2 IGTK + 2 BIGTK active at a time */ 87 struct ieee80211_key_conf *ap_early_keys[6]; 88 bool silent_deactivation; 89 struct iwl_probe_resp_data __rcu *probe_resp_data; 90 }; 91 92 /* Cleanup function for struct iwl_mld_phy, will be called in restart */ 93 static inline void 94 iwl_mld_cleanup_link(struct iwl_mld *mld, struct iwl_mld_link *link) 95 { 96 struct iwl_probe_resp_data *probe_data; 97 98 probe_data = wiphy_dereference(mld->wiphy, link->probe_resp_data); 99 RCU_INIT_POINTER(link->probe_resp_data, NULL); 100 if (probe_data) 101 kfree_rcu(probe_data, rcu_head); 102 103 CLEANUP_STRUCT(link); 104 if (link->bcast_sta.sta_id != IWL_INVALID_STA) 105 iwl_mld_free_internal_sta(mld, &link->bcast_sta); 106 if (link->mcast_sta.sta_id != IWL_INVALID_STA) 107 iwl_mld_free_internal_sta(mld, &link->mcast_sta); 108 if (link->aux_sta.sta_id != IWL_INVALID_STA) 109 iwl_mld_free_internal_sta(mld, &link->aux_sta); 110 } 111 112 /* Convert a percentage from [0,100] to [0,255] */ 113 #define NORMALIZE_PERCENT_TO_255(percentage) ((percentage) * 256 / 100) 114 115 int iwl_mld_add_link(struct iwl_mld *mld, 116 struct ieee80211_bss_conf *bss_conf); 117 void iwl_mld_remove_link(struct iwl_mld *mld, 118 struct ieee80211_bss_conf *bss_conf); 119 int iwl_mld_activate_link(struct iwl_mld *mld, 120 struct ieee80211_bss_conf *link); 121 void iwl_mld_deactivate_link(struct iwl_mld *mld, 122 struct ieee80211_bss_conf *link); 123 int iwl_mld_change_link_omi_bw(struct iwl_mld *mld, 124 struct ieee80211_bss_conf *link, 125 enum ieee80211_sta_rx_bandwidth bw); 126 int iwl_mld_change_link_in_fw(struct iwl_mld *mld, 127 struct ieee80211_bss_conf *link, u32 changes); 128 void iwl_mld_handle_missed_beacon_notif(struct iwl_mld *mld, 129 struct iwl_rx_packet *pkt); 130 bool iwl_mld_cancel_missed_beacon_notif(struct iwl_mld *mld, 131 struct iwl_rx_packet *pkt, 132 u32 removed_link_id); 133 int iwl_mld_link_set_associated(struct iwl_mld *mld, struct ieee80211_vif *vif, 134 struct ieee80211_bss_conf *link); 135 136 unsigned int iwl_mld_get_link_grade(struct iwl_mld *mld, 137 struct ieee80211_bss_conf *link_conf); 138 139 unsigned int iwl_mld_get_chan_load(struct iwl_mld *mld, 140 struct ieee80211_bss_conf *link_conf); 141 142 int iwl_mld_get_chan_load_by_others(struct iwl_mld *mld, 143 struct ieee80211_bss_conf *link_conf, 144 bool expect_active_link); 145 void iwl_mld_handle_omi_status_notif(struct iwl_mld *mld, 146 struct iwl_rx_packet *pkt); 147 void iwl_mld_leave_omi_bw_reduction(struct iwl_mld *mld); 148 void iwl_mld_check_omi_bw_reduction(struct iwl_mld *mld); 149 void iwl_mld_omi_ap_changed_bw(struct iwl_mld *mld, 150 struct ieee80211_bss_conf *link_conf, 151 enum ieee80211_sta_rx_bandwidth bw); 152 153 #endif /* __iwl_mld_link_h__ */ 154