drivers/net/wireless/intel/iwlwifi/mvm/mld-mac.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2022 - 2023 Intel Corporation
   4  */
   5 #include "mvm.h"
   6
   7 static void iwl_mvm_mld_set_he_support(struct iwl_mvm *mvm,
   8                                        struct ieee80211_vif *vif,
   9                                        struct iwl_mac_config_cmd *cmd)
  10 {
  11         if (vif->type == NL80211_IFTYPE_AP)
  12                 cmd->he_ap_support = cpu_to_le16(1);
  13         else
  14                 cmd->he_support = cpu_to_le16(1);
  15 }
  16
  17 static void iwl_mvm_mld_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
  18                                             struct ieee80211_vif *vif,
  19                                             struct iwl_mac_config_cmd *cmd,
  20                                             u32 action)
  21 {
  22         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  23         struct ieee80211_bss_conf *link_conf;
  24         unsigned int link_id;
  25
  26         cmd->id_and_color = cpu_to_le32(mvmvif->id);
  27         cmd->action = cpu_to_le32(action);
  28
  29         cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif));
  30
  31         memcpy(cmd->local_mld_addr, vif->addr, ETH_ALEN);
  32
  33         cmd->he_support = 0;
  34         cmd->eht_support = 0;
  35
  36         /* should be set by specific context type handler */
  37         cmd->filter_flags = 0;
  38
  39         cmd->nic_not_ack_enabled =
  40                 cpu_to_le32(!iwl_mvm_is_nic_ack_enabled(mvm, vif));
  41
  42         if (iwlwifi_mod_params.disable_11ax)
  43                 return;
  44
  45         /* If we have MLO enabled, then the firmware needs to enable
  46          * address translation for the station(s) we add. That depends
  47          * on having EHT enabled in firmware, which in turn depends on
  48          * mac80211 in the code below.
  49          * However, mac80211 doesn't enable HE/EHT until it has parsed
  50          * the association response successfully, so just skip all that
  51          * and enable both when we have MLO.
  52          */
  53         if (ieee80211_vif_is_mld(vif)) {
  54                 iwl_mvm_mld_set_he_support(mvm, vif, cmd);
  55                 cmd->eht_support = cpu_to_le32(1);
  56                 return;
  57         }
  58
  59         rcu_read_lock();
  60         for (link_id = 0; link_id < ARRAY_SIZE((vif)->link_conf); link_id++) {
  61                 link_conf = rcu_dereference(vif->link_conf[link_id]);
  62                 if (!link_conf)
  63                         continue;
  64
  65                 if (link_conf->he_support)
  66                         iwl_mvm_mld_set_he_support(mvm, vif, cmd);
  67
  68                 /* it's not reasonable to have EHT without HE and FW API doesn't
  69                  * support it. Ignore EHT in this case.
  70                  */
  71                 if (!link_conf->he_support && link_conf->eht_support)
  72                         continue;
  73
  74                 if (link_conf->eht_support) {
  75                         cmd->eht_support = cpu_to_le32(1);
  76                         break;
  77                 }
  78         }
  79         rcu_read_unlock();
  80 }
  81
  82 static int iwl_mvm_mld_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
  83                                          struct iwl_mac_config_cmd *cmd)
  84 {
  85         int ret = iwl_mvm_send_cmd_pdu(mvm,
  86                                        WIDE_ID(MAC_CONF_GROUP, MAC_CONFIG_CMD),
  87                                        0, sizeof(*cmd), cmd);
  88         if (ret)
  89                 IWL_ERR(mvm, "Failed to send MAC_CONFIG_CMD (action:%d): %d\n",
  90                         le32_to_cpu(cmd->action), ret);
  91         return ret;
  92 }
  93
  94 static int iwl_mvm_mld_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
  95                                         struct ieee80211_vif *vif,
  96                                         u32 action, bool force_assoc_off)
  97 {
  98         struct iwl_mac_config_cmd cmd = {};
  99         u16 esr_transition_timeout;
 100
 101         WARN_ON(vif->type != NL80211_IFTYPE_STATION);
 102
 103         /* Fill the common data for all mac context types */
 104         iwl_mvm_mld_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 105
 106         /*
 107          * We always want to hear MCAST frames, if we're not authorized yet,
 108          * we'll drop them.
 109          */
 110         cmd.filter_flags |= cpu_to_le32(MAC_CFG_FILTER_ACCEPT_GRP);
 111
 112         if (vif->p2p)
 113                 cmd.client.ctwin =
 114                         iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif);
 115
 116         if (vif->cfg.assoc && !force_assoc_off) {
 117                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 118
 119                 cmd.client.is_assoc = 1;
 120
 121                 if (!mvmvif->authorized &&
 122                     fw_has_capa(&mvm->fw->ucode_capa,
 123                                 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))
 124                         cmd.client.data_policy |=
 125                                 cpu_to_le16(COEX_HIGH_PRIORITY_ENABLE);
 126
 127         } else {
 128                 cmd.client.is_assoc = 0;
 129
 130                 /* Allow beacons to pass through as long as we are not
 131                  * associated, or we do not have dtim period information.
 132                  */
 133                 cmd.filter_flags |= cpu_to_le32(MAC_CFG_FILTER_ACCEPT_BEACON);
 134         }
 135
 136         cmd.client.assoc_id = cpu_to_le16(vif->cfg.aid);
 137         if (ieee80211_vif_is_mld(vif)) {
 138                 esr_transition_timeout =
 139                         u16_get_bits(vif->cfg.eml_cap,
 140                                      IEEE80211_EML_CAP_TRANSITION_TIMEOUT);
 141
 142                 cmd.client.esr_transition_timeout =
 143                         min_t(u16, IEEE80211_EML_CAP_TRANSITION_TIMEOUT_128TU,
 144                               esr_transition_timeout);
 145                 cmd.client.medium_sync_delay =
 146                         cpu_to_le16(vif->cfg.eml_med_sync_delay);
 147         }
 148
 149         if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)
 150                 cmd.filter_flags |= cpu_to_le32(MAC_CFG_FILTER_ACCEPT_PROBE_REQ);
 151
 152         if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax)
 153                 cmd.client.data_policy |=
 154                         cpu_to_le16(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif));
 155
 156         return iwl_mvm_mld_mac_ctxt_send_cmd(mvm, &cmd);
 157 }
 158
 159 static int iwl_mvm_mld_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
 160                                              struct ieee80211_vif *vif,
 161                                              u32 action)
 162 {
 163         struct iwl_mac_config_cmd cmd = {};
 164
 165         WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
 166
 167         iwl_mvm_mld_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 168
 169         cmd.filter_flags = cpu_to_le32(MAC_CFG_FILTER_PROMISC |
 170                                        MAC_FILTER_IN_CONTROL_AND_MGMT |
 171                                        MAC_CFG_FILTER_ACCEPT_BEACON |
 172                                        MAC_CFG_FILTER_ACCEPT_PROBE_REQ |
 173                                        MAC_CFG_FILTER_ACCEPT_GRP);
 174
 175         return iwl_mvm_mld_mac_ctxt_send_cmd(mvm, &cmd);
 176 }
 177
 178 static int iwl_mvm_mld_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
 179                                          struct ieee80211_vif *vif,
 180                                          u32 action)
 181 {
 182         struct iwl_mac_config_cmd cmd = {};
 183
 184         WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
 185
 186         iwl_mvm_mld_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 187
 188         cmd.filter_flags = cpu_to_le32(MAC_CFG_FILTER_ACCEPT_BEACON |
 189                                        MAC_CFG_FILTER_ACCEPT_PROBE_REQ |
 190                                        MAC_CFG_FILTER_ACCEPT_GRP);
 191
 192         return iwl_mvm_mld_mac_ctxt_send_cmd(mvm, &cmd);
 193 }
 194
 195 static int iwl_mvm_mld_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
 196                                                struct ieee80211_vif *vif,
 197                                                u32 action)
 198 {
 199         struct iwl_mac_config_cmd cmd = {};
 200
 201         WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
 202
 203         iwl_mvm_mld_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 204
 205         cmd.p2p_dev.is_disc_extended =
 206                 iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif);
 207
 208         /* Override the filter flags to accept only probe requests */
 209         cmd.filter_flags = cpu_to_le32(MAC_CFG_FILTER_ACCEPT_PROBE_REQ);
 210
 211         return iwl_mvm_mld_mac_ctxt_send_cmd(mvm, &cmd);
 212 }
 213
 214 static int iwl_mvm_mld_mac_ctxt_cmd_ap_go(struct iwl_mvm *mvm,
 215                                           struct ieee80211_vif *vif,
 216                                           u32 action)
 217 {
 218         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 219         struct iwl_mac_config_cmd cmd = {};
 220
 221         WARN_ON(vif->type != NL80211_IFTYPE_AP);
 222
 223         /* Fill the common data for all mac context types */
 224         iwl_mvm_mld_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 225
 226         iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif,
 227                                                  &cmd.filter_flags,
 228                                                  MAC_CFG_FILTER_ACCEPT_PROBE_REQ,
 229                                                  MAC_CFG_FILTER_ACCEPT_BEACON);
 230
 231         return iwl_mvm_mld_mac_ctxt_send_cmd(mvm, &cmd);
 232 }
 233
 234 static int iwl_mvm_mld_mac_ctx_send(struct iwl_mvm *mvm,
 235                                     struct ieee80211_vif *vif,
 236                                     u32 action, bool force_assoc_off)
 237 {
 238         switch (vif->type) {
 239         case NL80211_IFTYPE_STATION:
 240                 return iwl_mvm_mld_mac_ctxt_cmd_sta(mvm, vif, action,
 241                                                     force_assoc_off);
 242         case NL80211_IFTYPE_AP:
 243                 return iwl_mvm_mld_mac_ctxt_cmd_ap_go(mvm, vif, action);
 244         case NL80211_IFTYPE_MONITOR:
 245                 return iwl_mvm_mld_mac_ctxt_cmd_listener(mvm, vif, action);
 246         case NL80211_IFTYPE_P2P_DEVICE:
 247                 return iwl_mvm_mld_mac_ctxt_cmd_p2p_device(mvm, vif, action);
 248         case NL80211_IFTYPE_ADHOC:
 249                 return iwl_mvm_mld_mac_ctxt_cmd_ibss(mvm, vif, action);
 250         default:
 251                 break;
 252         }
 253
 254         return -EOPNOTSUPP;
 255 }
 256
 257 int iwl_mvm_mld_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 258 {
 259         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 260         int ret;
 261
 262         if (WARN_ON_ONCE(vif->type == NL80211_IFTYPE_NAN))
 263                 return -EOPNOTSUPP;
 264
 265         if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
 266                       vif->addr, ieee80211_vif_type_p2p(vif)))
 267                 return -EIO;
 268
 269         ret = iwl_mvm_mld_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
 270                                        true);
 271         if (ret)
 272                 return ret;
 273
 274         /* will only do anything at resume from D3 time */
 275         iwl_mvm_set_last_nonqos_seq(mvm, vif);
 276
 277         mvmvif->uploaded = true;
 278         return 0;
 279 }
 280
 281 int iwl_mvm_mld_mac_ctxt_changed(struct iwl_mvm *mvm,
 282                                  struct ieee80211_vif *vif,
 283                                  bool force_assoc_off)
 284 {
 285         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 286
 287         if (WARN_ON_ONCE(vif->type == NL80211_IFTYPE_NAN))
 288                 return -EOPNOTSUPP;
 289
 290         if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
 291                       vif->addr, ieee80211_vif_type_p2p(vif)))
 292                 return -EIO;
 293
 294         return iwl_mvm_mld_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
 295                                         force_assoc_off);
 296 }
 297
 298 int iwl_mvm_mld_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 299 {
 300         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 301         struct iwl_mac_config_cmd cmd = {
 302                 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
 303                 .id_and_color = cpu_to_le32(mvmvif->id),
 304         };
 305         int ret;
 306
 307         if (WARN_ON_ONCE(vif->type == NL80211_IFTYPE_NAN))
 308                 return -EOPNOTSUPP;
 309
 310         if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
 311                       vif->addr, ieee80211_vif_type_p2p(vif)))
 312                 return -EIO;
 313
 314         ret = iwl_mvm_mld_mac_ctxt_send_cmd(mvm, &cmd);
 315         if (ret)
 316                 return ret;
 317
 318         mvmvif->uploaded = false;
 319
 320         return 0;
 321 }