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 * @bigtks: BIGTKs of the AP. Only valid for STA mode. 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 * @mon_sta: station used for TX injection in monitor interface. 43 * @last_cqm_rssi_event: rssi of the last cqm rssi event 44 * @average_beacon_energy: average beacon energy for beacons received during 45 * client connections 46 * @ap_early_keys: The firmware cannot install keys before bcast/mcast STAs, 47 * but higher layers work differently, so we store the keys here for 48 * later installation. 49 * @silent_deactivation: next deactivation needs to be silent. 50 * @probe_resp_data: data from FW notification to store NOA related data to be 51 * inserted into probe response. 52 */ 53 struct iwl_mld_link { 54 struct rcu_head rcu_head; 55 56 /* Add here fields that need clean up on restart */ 57 struct_group(zeroed_on_hw_restart, 58 u8 fw_id; 59 bool active; 60 struct ieee80211_tx_queue_params queue_params[IEEE80211_NUM_ACS]; 61 struct ieee80211_chanctx_conf __rcu *chan_ctx; 62 bool he_ru_2mhz_block; 63 struct ieee80211_key_conf *igtk; 64 struct ieee80211_key_conf __rcu *bigtks[2]; 65 ); 66 /* And here fields that survive a fw restart */ 67 struct iwl_mld_int_sta bcast_sta; 68 struct iwl_mld_int_sta mcast_sta; 69 struct iwl_mld_int_sta mon_sta; 70 int last_cqm_rssi_event; 71 72 /* we can only have 2 GTK + 2 IGTK + 2 BIGTK active at a time */ 73 struct ieee80211_key_conf *ap_early_keys[6]; 74 u32 average_beacon_energy; 75 bool silent_deactivation; 76 struct iwl_probe_resp_data __rcu *probe_resp_data; 77 }; 78 79 /* Cleanup function for struct iwl_mld_link, will be called in restart */ 80 static inline void 81 iwl_mld_cleanup_link(struct iwl_mld *mld, struct iwl_mld_link *link) 82 { 83 struct iwl_probe_resp_data *probe_data; 84 85 probe_data = wiphy_dereference(mld->wiphy, link->probe_resp_data); 86 RCU_INIT_POINTER(link->probe_resp_data, NULL); 87 if (probe_data) 88 kfree_rcu(probe_data, rcu_head); 89 90 CLEANUP_STRUCT(link); 91 if (link->bcast_sta.sta_id != IWL_INVALID_STA) 92 iwl_mld_free_internal_sta(mld, &link->bcast_sta); 93 if (link->mcast_sta.sta_id != IWL_INVALID_STA) 94 iwl_mld_free_internal_sta(mld, &link->mcast_sta); 95 if (link->mon_sta.sta_id != IWL_INVALID_STA) 96 iwl_mld_free_internal_sta(mld, &link->mon_sta); 97 } 98 99 /* Convert a percentage from [0,100] to [0,255] */ 100 #define NORMALIZE_PERCENT_TO_255(percentage) ((percentage) * 256 / 100) 101 102 int iwl_mld_add_link(struct iwl_mld *mld, 103 struct ieee80211_bss_conf *bss_conf); 104 void iwl_mld_remove_link(struct iwl_mld *mld, 105 struct ieee80211_bss_conf *bss_conf); 106 int iwl_mld_activate_link(struct iwl_mld *mld, 107 struct ieee80211_bss_conf *link); 108 void iwl_mld_deactivate_link(struct iwl_mld *mld, 109 struct ieee80211_bss_conf *link); 110 int iwl_mld_change_link_in_fw(struct iwl_mld *mld, 111 struct ieee80211_bss_conf *link, u32 changes); 112 void iwl_mld_handle_missed_beacon_notif(struct iwl_mld *mld, 113 struct iwl_rx_packet *pkt); 114 bool iwl_mld_cancel_missed_beacon_notif(struct iwl_mld *mld, 115 struct iwl_rx_packet *pkt, 116 u32 removed_link_id); 117 int iwl_mld_link_set_associated(struct iwl_mld *mld, struct ieee80211_vif *vif, 118 struct ieee80211_bss_conf *link); 119 120 unsigned int iwl_mld_get_link_grade(struct iwl_mld *mld, 121 struct ieee80211_bss_conf *link_conf); 122 123 unsigned int iwl_mld_get_chan_load(struct iwl_mld *mld, 124 struct ieee80211_bss_conf *link_conf); 125 126 int iwl_mld_get_chan_load_by_others(struct iwl_mld *mld, 127 struct ieee80211_bss_conf *link_conf, 128 bool expect_active_link); 129 130 void iwl_mld_handle_beacon_filter_notif(struct iwl_mld *mld, 131 struct iwl_rx_packet *pkt); 132 133 #endif /* __iwl_mld_link_h__ */ 134