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