1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ 2 /* 3 * Copyright (C) 2024-2025 Intel Corporation 4 */ 5 #ifndef __iwl_mld_iface_h__ 6 #define __iwl_mld_iface_h__ 7 8 #include <net/mac80211.h> 9 10 #include "link.h" 11 #include "session-protect.h" 12 #include "d3.h" 13 14 enum iwl_mld_cca_40mhz_wa_status { 15 CCA_40_MHZ_WA_NONE, 16 CCA_40_MHZ_WA_RESET, 17 CCA_40_MHZ_WA_RECONNECT, 18 }; 19 20 /** 21 * enum iwl_mld_emlsr_blocked - defines reasons for which EMLSR is blocked 22 * 23 * These blocks are applied/stored per-VIF. 24 * 25 * @IWL_MLD_EMLSR_BLOCKED_PREVENTION: Prevent repeated EMLSR enter/exit 26 * @IWL_MLD_EMLSR_BLOCKED_WOWLAN: WOWLAN is preventing EMLSR 27 * @IWL_MLD_EMLSR_BLOCKED_ROC: remain-on-channel is preventing EMLSR 28 * @IWL_MLD_EMLSR_BLOCKED_NON_BSS: An active non-BSS interface's link is 29 * preventing EMLSR 30 * @IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS: An expected active non-BSS interface's 31 * link is preventing EMLSR. This is a temporary blocking that is set when 32 * there is an indication that a non-BSS interface is to be added. 33 * @IWL_MLD_EMLSR_BLOCKED_TPT: throughput is too low to make EMLSR worthwhile 34 */ 35 enum iwl_mld_emlsr_blocked { 36 IWL_MLD_EMLSR_BLOCKED_PREVENTION = 0x1, 37 IWL_MLD_EMLSR_BLOCKED_WOWLAN = 0x2, 38 IWL_MLD_EMLSR_BLOCKED_ROC = 0x4, 39 IWL_MLD_EMLSR_BLOCKED_NON_BSS = 0x8, 40 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS = 0x10, 41 IWL_MLD_EMLSR_BLOCKED_TPT = 0x20, 42 }; 43 44 /** 45 * enum iwl_mld_emlsr_exit - defines reasons for exiting EMLSR 46 * 47 * Reasons to exit EMLSR may be either link specific or even specific to a 48 * combination of links. 49 * 50 * @IWL_MLD_EMLSR_EXIT_BLOCK: Exit due to a block reason being set 51 * @IWL_MLD_EMLSR_EXIT_MISSED_BEACON: Exit due to missed beacons 52 * @IWL_MLD_EMLSR_EXIT_FAIL_ENTRY: FW failed to enter EMLSR 53 * @IWL_MLD_EMLSR_EXIT_CSA: EMLSR prevented due to channel switch on link 54 * @IWL_MLD_EMLSR_EXIT_EQUAL_BAND: EMLSR prevented as both links share the band 55 * @IWL_MLD_EMLSR_EXIT_LOW_RSSI: Link RSSI is unsuitable for EMLSR 56 * @IWL_MLD_EMLSR_EXIT_LINK_USAGE: Exit EMLSR due to low TPT on secondary link 57 * @IWL_MLD_EMLSR_EXIT_BT_COEX: Exit EMLSR due to BT coexistence 58 * @IWL_MLD_EMLSR_EXIT_CHAN_LOAD: Exit EMLSR because the primary channel is not 59 * loaded enough to justify EMLSR. 60 * @IWL_MLD_EMLSR_EXIT_RFI: Exit EMLSR due to RFI 61 * @IWL_MLD_EMLSR_EXIT_FW_REQUEST: Exit EMLSR because the FW requested it 62 * @IWL_MLD_EMLSR_EXIT_INVALID: internal exit reason due to invalid data 63 */ 64 enum iwl_mld_emlsr_exit { 65 IWL_MLD_EMLSR_EXIT_BLOCK = 0x1, 66 IWL_MLD_EMLSR_EXIT_MISSED_BEACON = 0x2, 67 IWL_MLD_EMLSR_EXIT_FAIL_ENTRY = 0x4, 68 IWL_MLD_EMLSR_EXIT_CSA = 0x8, 69 IWL_MLD_EMLSR_EXIT_EQUAL_BAND = 0x10, 70 IWL_MLD_EMLSR_EXIT_LOW_RSSI = 0x20, 71 IWL_MLD_EMLSR_EXIT_LINK_USAGE = 0x40, 72 IWL_MLD_EMLSR_EXIT_BT_COEX = 0x80, 73 IWL_MLD_EMLSR_EXIT_CHAN_LOAD = 0x100, 74 IWL_MLD_EMLSR_EXIT_RFI = 0x200, 75 IWL_MLD_EMLSR_EXIT_FW_REQUEST = 0x400, 76 IWL_MLD_EMLSR_EXIT_INVALID = 0x800, 77 }; 78 79 /** 80 * struct iwl_mld_emlsr - per-VIF data about EMLSR operation 81 * 82 * @primary: The current primary link 83 * @selected_primary: Primary link as selected during the last link selection 84 * @selected_links: Links as selected during the last link selection 85 * @blocked_reasons: Reasons preventing EMLSR from being enabled 86 * @last_exit_reason: Reason for the last EMLSR exit 87 * @last_exit_ts: Time of the last EMLSR exit (if @last_exit_reason is non-zero) 88 * @exit_repeat_count: Number of times EMLSR was exited for the same reason 89 * @unblock_tpt_wk: Unblock EMLSR because the throughput limit was reached 90 * @check_tpt_wk: a worker to check if IWL_MLD_EMLSR_BLOCKED_TPT should be 91 * added, for example if there is no longer enough traffic. 92 * @prevent_done_wk: Worker to remove %IWL_MLD_EMLSR_BLOCKED_PREVENTION 93 * @tmp_non_bss_done_wk: Worker to remove %IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS 94 */ 95 struct iwl_mld_emlsr { 96 struct_group(zeroed_on_not_authorized, 97 u8 primary; 98 99 u8 selected_primary; 100 u16 selected_links; 101 102 enum iwl_mld_emlsr_blocked blocked_reasons; 103 104 enum iwl_mld_emlsr_exit last_exit_reason; 105 unsigned long last_exit_ts; 106 u8 exit_repeat_count; 107 ); 108 109 struct wiphy_work unblock_tpt_wk; 110 struct wiphy_delayed_work check_tpt_wk; 111 112 struct wiphy_delayed_work prevent_done_wk; 113 struct wiphy_delayed_work tmp_non_bss_done_wk; 114 }; 115 116 /** 117 * struct iwl_mld_vif - virtual interface (MAC context) configuration parameters 118 * 119 * @fw_id: fw id of the mac context. 120 * @session_protect: session protection parameters 121 * @ap_sta: pointer to AP sta, for easier access to it. 122 * Relevant only for STA vifs. 123 * @authorized: indicates the AP station was set to authorized 124 * @bigtks: BIGTKs of the AP, for beacon protection. 125 * Only valid for STA. (FIXME: needs to be per link) 126 * @num_associated_stas: number of associated STAs. Relevant only for AP mode. 127 * @ap_ibss_active: whether the AP/IBSS was started 128 * @roc_activity: the id of the roc_activity running. Relevant for p2p device 129 * only. Set to %ROC_NUM_ACTIVITIES when not in use. 130 * @cca_40mhz_workaround: When we are connected in 2.4 GHz and 40 MHz, and the 131 * environment is too loaded, we work around this by reconnecting to the 132 * same AP with 20 MHz. This manages the status of the workaround. 133 * @beacon_inject_active: indicates an active debugfs beacon ie injection 134 * @low_latency_causes: bit flags, indicating the causes for low-latency, 135 * see @iwl_mld_low_latency_cause. 136 * @ps_disabled: indicates that PS is disabled for this interface 137 * @mld: pointer to the mld structure. 138 * @deflink: default link data, for use in non-MLO, 139 * @link: reference to link data for each valid link, for use in MLO. 140 * @emlsr: information related to EMLSR 141 * @wowlan_data: data used by the wowlan suspend flow 142 * @use_ps_poll: use ps_poll frames 143 * @disable_bf: disable beacon filter 144 * @dbgfs_slink: debugfs symlink for this interface 145 */ 146 struct iwl_mld_vif { 147 /* Add here fields that need clean up on restart */ 148 struct_group(zeroed_on_hw_restart, 149 u8 fw_id; 150 struct iwl_mld_session_protect session_protect; 151 struct ieee80211_sta *ap_sta; 152 bool authorized; 153 struct ieee80211_key_conf __rcu *bigtks[2]; 154 u8 num_associated_stas; 155 bool ap_ibss_active; 156 u32 roc_activity; 157 enum iwl_mld_cca_40mhz_wa_status cca_40mhz_workaround; 158 #ifdef CONFIG_IWLWIFI_DEBUGFS 159 bool beacon_inject_active; 160 #endif 161 u8 low_latency_causes; 162 bool ps_disabled; 163 ); 164 /* And here fields that survive a fw restart */ 165 struct iwl_mld *mld; 166 struct iwl_mld_link deflink; 167 struct iwl_mld_link __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS]; 168 169 struct iwl_mld_emlsr emlsr; 170 171 #ifdef CONFIG_PM_SLEEP 172 struct iwl_mld_wowlan_data wowlan_data; 173 #endif 174 #ifdef CONFIG_IWLWIFI_DEBUGFS 175 bool use_ps_poll; 176 bool disable_bf; 177 struct dentry *dbgfs_slink; 178 #endif 179 }; 180 181 static inline struct iwl_mld_vif * 182 iwl_mld_vif_from_mac80211(struct ieee80211_vif *vif) 183 { 184 return (void *)vif->drv_priv; 185 } 186 187 #define iwl_mld_link_dereference_check(mld_vif, link_id) \ 188 rcu_dereference_check((mld_vif)->link[link_id], \ 189 lockdep_is_held(&mld_vif->mld->wiphy->mtx)) 190 191 #define for_each_mld_vif_valid_link(mld_vif, mld_link) \ 192 for (int link_id = 0; link_id < ARRAY_SIZE((mld_vif)->link); \ 193 link_id++) \ 194 if ((mld_link = iwl_mld_link_dereference_check(mld_vif, link_id))) 195 196 /* Retrieve pointer to mld link from mac80211 structures */ 197 static inline struct iwl_mld_link * 198 iwl_mld_link_from_mac80211(struct ieee80211_bss_conf *bss_conf) 199 { 200 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(bss_conf->vif); 201 202 return iwl_mld_link_dereference_check(mld_vif, bss_conf->link_id); 203 } 204 205 int iwl_mld_mac80211_iftype_to_fw(const struct ieee80211_vif *vif); 206 207 /* Cleanup function for struct iwl_mld_vif, will be called in restart */ 208 void iwl_mld_cleanup_vif(void *data, u8 *mac, struct ieee80211_vif *vif); 209 int iwl_mld_mac_fw_action(struct iwl_mld *mld, struct ieee80211_vif *vif, 210 u32 action); 211 int iwl_mld_add_vif(struct iwl_mld *mld, struct ieee80211_vif *vif); 212 int iwl_mld_rm_vif(struct iwl_mld *mld, struct ieee80211_vif *vif); 213 void iwl_mld_set_vif_associated(struct iwl_mld *mld, 214 struct ieee80211_vif *vif); 215 u8 iwl_mld_get_fw_bss_vifs_ids(struct iwl_mld *mld); 216 void iwl_mld_handle_probe_resp_data_notif(struct iwl_mld *mld, 217 struct iwl_rx_packet *pkt); 218 219 void iwl_mld_handle_datapath_monitor_notif(struct iwl_mld *mld, 220 struct iwl_rx_packet *pkt); 221 222 void iwl_mld_handle_uapsd_misbehaving_ap_notif(struct iwl_mld *mld, 223 struct iwl_rx_packet *pkt); 224 225 void iwl_mld_reset_cca_40mhz_workaround(struct iwl_mld *mld, 226 struct ieee80211_vif *vif); 227 228 static inline bool iwl_mld_vif_low_latency(const struct iwl_mld_vif *mld_vif) 229 { 230 return !!mld_vif->low_latency_causes; 231 } 232 233 struct ieee80211_vif *iwl_mld_get_bss_vif(struct iwl_mld *mld); 234 235 #endif /* __iwl_mld_iface_h__ */ 236