// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* * Copyright (C) 2022 Intel Corporation */ #include "mvm.h" #include "time-sync.h" static int iwl_mvm_mld_send_sta_cmd(struct iwl_mvm *mvm, struct iwl_mvm_sta_cfg_cmd *cmd) { int ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, STA_CONFIG_CMD), 0, sizeof(*cmd), cmd); if (ret) IWL_ERR(mvm, "STA_CONFIG_CMD send failed, ret=0x%x\n", ret); return ret; } /* * Add an internal station to the FW table */ static int iwl_mvm_mld_add_int_sta_to_fw(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta, const u8 *addr, u16 phy_id) { struct iwl_mvm_sta_cfg_cmd cmd; lockdep_assert_held(&mvm->mutex); memset(&cmd, 0, sizeof(cmd)); cmd.sta_id = cpu_to_le32((u8)sta->sta_id); cmd.link_id = cpu_to_le32(phy_id); cmd.station_type = cpu_to_le32(sta->type); if (addr) { memcpy(cmd.peer_mld_address, addr, ETH_ALEN); memcpy(cmd.peer_link_address, addr, ETH_ALEN); } return iwl_mvm_mld_send_sta_cmd(mvm, &cmd); } /* * Remove a station from the FW table. Before sending the command to remove * the station validate that the station is indeed known to the driver (sanity * only). */ static int iwl_mvm_mld_rm_sta_from_fw(struct iwl_mvm *mvm, u32 sta_id) { struct ieee80211_sta *sta; struct iwl_mvm_remove_sta_cmd rm_sta_cmd = { .sta_id = cpu_to_le32(sta_id), }; int ret; sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex)); /* Note: internal stations are marked as error values */ if (!sta) { IWL_ERR(mvm, "Invalid station id\n"); return -EINVAL; } ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, STA_REMOVE_CMD), 0, sizeof(rm_sta_cmd), &rm_sta_cmd); if (ret) { IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); return ret; } return 0; } static int iwl_mvm_add_aux_sta_to_fw(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta, u32 lmac_id) { int ret; struct iwl_mvm_aux_sta_cmd cmd = { .sta_id = cpu_to_le32(sta->sta_id), .lmac_id = cpu_to_le32(lmac_id), }; ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, AUX_STA_CMD), 0, sizeof(cmd), &cmd); if (ret) IWL_ERR(mvm, "Failed to send AUX_STA_CMD\n"); return ret; } /* * Adds an internal sta to the FW table with its queues */ static int iwl_mvm_mld_add_int_sta_with_queue(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta, const u8 *addr, int phy_id, u16 *queue, u8 tid, unsigned int *_wdg_timeout) { int ret, txq; unsigned int wdg_timeout = _wdg_timeout ? *_wdg_timeout : mvm->trans->trans_cfg->base_params->wd_timeout; if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) return -ENOSPC; if (sta->type == STATION_TYPE_AUX) ret = iwl_mvm_add_aux_sta_to_fw(mvm, sta, phy_id); else ret = iwl_mvm_mld_add_int_sta_to_fw(mvm, sta, addr, phy_id); if (ret) return ret; /* * For 22000 firmware and on we cannot add queue to a station unknown * to firmware so enable queue here - after the station was added */ txq = iwl_mvm_tvqm_enable_txq(mvm, NULL, sta->sta_id, tid, wdg_timeout); if (txq < 0) { iwl_mvm_mld_rm_sta_from_fw(mvm, sta->sta_id); return txq; } *queue = txq; return 0; } /* * Adds a new int sta: allocate it in the driver, add it to the FW table, * and add its queues. */ static int iwl_mvm_mld_add_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *int_sta, u16 *queue, enum nl80211_iftype iftype, enum iwl_fw_sta_type sta_type, int phy_id, const u8 *addr, u8 tid, unsigned int *wdg_timeout) { int ret; lockdep_assert_held(&mvm->mutex); /* qmask argument is not used in the new tx api, send a don't care */ ret = iwl_mvm_allocate_int_sta(mvm, int_sta, 0, iftype, sta_type); if (ret) return ret; ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, int_sta, addr, phy_id, queue, tid, wdg_timeout); if (ret) { iwl_mvm_dealloc_int_sta(mvm, int_sta); return ret; } return 0; } /* Allocate a new station entry for the broadcast station to the given vif, * and send it to the FW. * Note that each P2P mac should have its own broadcast station. */ int iwl_mvm_mld_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; const u8 *baddr = _baddr; unsigned int wdg_timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); u16 *queue; lockdep_assert_held(&mvm->mutex); if (vif->type == NL80211_IFTYPE_ADHOC) baddr = vif->bss_conf.bssid; if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) { queue = &mvm->probe_queue; } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { queue = &mvm->p2p_dev_queue; } else { WARN(1, "Missing required TXQ for adding bcast STA\n"); return -EINVAL; } return iwl_mvm_mld_add_int_sta(mvm, bsta, queue, ieee80211_vif_type_p2p(vif), STATION_TYPE_BCAST_MGMT, mvmvif->deflink.phy_ctxt->id, baddr, IWL_MAX_TID_COUNT, &wdg_timeout); } /* Allocate a new station entry for the broadcast station to the given vif, * and send it to the FW. * Note that each AP/GO mac should have its own multicast station. */ int iwl_mvm_mld_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta; static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; const u8 *maddr = _maddr; unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); lockdep_assert_held(&mvm->mutex); if (WARN_ON(vif->type != NL80211_IFTYPE_AP && vif->type != NL80211_IFTYPE_ADHOC)) return -EOPNOTSUPP; /* In IBSS, ieee80211_check_queues() sets the cab_queue to be * invalid, so make sure we use the queue we want. * Note that this is done here as we want to avoid making DQA * changes in mac80211 layer. */ if (vif->type == NL80211_IFTYPE_ADHOC) mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; return iwl_mvm_mld_add_int_sta(mvm, msta, &mvmvif->deflink.cab_queue, vif->type, STATION_TYPE_MCAST, mvmvif->deflink.phy_ctxt->id, maddr, 0, &timeout); } /* Allocate a new station entry for the sniffer station to the given vif, * and send it to the FW. */ int iwl_mvm_mld_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); lockdep_assert_held(&mvm->mutex); return iwl_mvm_mld_add_int_sta(mvm, &mvm->snif_sta, &mvm->snif_queue, vif->type, STATION_TYPE_BCAST_MGMT, mvmvif->deflink.phy_ctxt->id, NULL, IWL_MAX_TID_COUNT, NULL); } int iwl_mvm_mld_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) { lockdep_assert_held(&mvm->mutex); /* In CDB NICs we need to specify which lmac to use for aux activity * using the phy_id argument place to send lmac_id to the function */ return iwl_mvm_mld_add_int_sta(mvm, &mvm->aux_sta, &mvm->aux_queue, NL80211_IFTYPE_UNSPECIFIED, STATION_TYPE_AUX, lmac_id, NULL, IWL_MAX_TID_COUNT, NULL); } static int iwl_mvm_mld_disable_txq(struct iwl_mvm *mvm, int sta_id, u16 *queueptr, u8 tid) { int queue = *queueptr; int ret = 0; if (mvm->sta_remove_requires_queue_remove) { u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, SCD_QUEUE_CONFIG_CMD); struct iwl_scd_queue_cfg_cmd remove_cmd = { .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), .u.remove.tid = cpu_to_le32(tid), .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)), }; ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, sizeof(remove_cmd), &remove_cmd); } iwl_trans_txq_free(mvm->trans, queue); *queueptr = IWL_MVM_INVALID_QUEUE; return ret; } /* Removes a sta from the FW table, disable its queues, and dealloc it */ static int iwl_mvm_mld_rm_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *int_sta, bool flush, u8 tid, u16 *queuptr) { int ret; lockdep_assert_held(&mvm->mutex); if (WARN_ON_ONCE(int_sta->sta_id == IWL_MVM_INVALID_STA)) return -EINVAL; if (flush) iwl_mvm_flush_sta(mvm, int_sta, true); iwl_mvm_mld_disable_txq(mvm, int_sta->sta_id, queuptr, tid); ret = iwl_mvm_mld_rm_sta_from_fw(mvm, int_sta->sta_id); if (ret) IWL_WARN(mvm, "Failed sending remove station\n"); iwl_mvm_dealloc_int_sta(mvm, int_sta); return ret; } int iwl_mvm_mld_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); u16 *queueptr; lockdep_assert_held(&mvm->mutex); switch (vif->type) { case NL80211_IFTYPE_AP: case NL80211_IFTYPE_ADHOC: queueptr = &mvm->probe_queue; break; case NL80211_IFTYPE_P2P_DEVICE: queueptr = &mvm->p2p_dev_queue; break; default: WARN(1, "Can't free bcast queue on vif type %d\n", vif->type); return -EINVAL; } return iwl_mvm_mld_rm_int_sta(mvm, &mvmvif->deflink.bcast_sta, true, IWL_MAX_TID_COUNT, queueptr); } /* Send the FW a request to remove the station from it's internal data * structures, and in addition remove it from the local data structure. */ int iwl_mvm_mld_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); lockdep_assert_held(&mvm->mutex); return iwl_mvm_mld_rm_int_sta(mvm, &mvmvif->deflink.mcast_sta, true, 0, &mvmvif->deflink.cab_queue); } int iwl_mvm_mld_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { lockdep_assert_held(&mvm->mutex); return iwl_mvm_mld_rm_int_sta(mvm, &mvm->snif_sta, false, IWL_MAX_TID_COUNT, &mvm->snif_queue); } int iwl_mvm_mld_rm_aux_sta(struct iwl_mvm *mvm) { lockdep_assert_held(&mvm->mutex); return iwl_mvm_mld_rm_int_sta(mvm, &mvm->aux_sta, false, IWL_MAX_TID_COUNT, &mvm->aux_queue); } /* send a cfg sta command to add/update a sta in firmware */ static int iwl_mvm_mld_cfg_sta(struct iwl_mvm *mvm, struct ieee80211_sta *sta, struct ieee80211_vif *vif, u16 phy_id) { struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_sta_cfg_cmd cmd = { .sta_id = cpu_to_le32(mvm_sta->deflink.sta_id), .link_id = cpu_to_le32(phy_id), .station_type = cpu_to_le32(mvm_sta->sta_type), .mfp = cpu_to_le32(sta->mfp), }; u32 agg_size = 0, mpdu_dens = 0; /* For now the link addr is the same as the mld addr */ if (vif->type == NL80211_IFTYPE_AP) { memcpy(&cmd.peer_mld_address, sta->addr, ETH_ALEN); memcpy(&cmd.peer_link_address, sta->addr, ETH_ALEN); } else if (vif->bss_conf.bssid) { memcpy(&cmd.peer_mld_address, vif->bss_conf.bssid, ETH_ALEN); memcpy(&cmd.peer_link_address, vif->bss_conf.bssid, ETH_ALEN); } if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) cmd.assoc_id = cpu_to_le32(sta->aid); switch (sta->deflink.rx_nss) { case 1: cmd.mimo = cpu_to_le32(0); break; case 2 ... 8: cmd.mimo = cpu_to_le32(1); break; } switch (sta->deflink.smps_mode) { case IEEE80211_SMPS_AUTOMATIC: case IEEE80211_SMPS_NUM_MODES: WARN_ON(1); break; case IEEE80211_SMPS_STATIC: /* override NSS */ cmd.mimo = cpu_to_le32(0); break; case IEEE80211_SMPS_DYNAMIC: cmd.mimo_protection = cpu_to_le32(1); break; case IEEE80211_SMPS_OFF: /* nothing */ break; } mpdu_dens = iwl_mvm_get_sta_ampdu_dens(sta, &agg_size); cmd.tx_ampdu_spacing = cpu_to_le32(mpdu_dens); cmd.tx_ampdu_max_size = cpu_to_le32(agg_size); if (sta->wme) { cmd.sp_length = cpu_to_le32(sta->max_sp ? sta->max_sp * 2 : 128); cmd.uapsd_acs = cpu_to_le32(iwl_mvm_get_sta_uapsd_acs(sta)); } if (sta->deflink.he_cap.has_he) { cmd.trig_rnd_alloc = cpu_to_le32(vif->bss_conf.uora_exists ? 1 : 0); /* PPE Thresholds */ iwl_mvm_set_sta_pkt_ext(mvm, sta, &cmd.pkt_ext); /* HTC flags */ cmd.htc_flags = iwl_mvm_get_sta_htc_flags(sta); if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_ACK_EN) cmd.ack_enabled = cpu_to_le32(1); } return iwl_mvm_mld_send_sta_cmd(mvm, &cmd); } int iwl_mvm_mld_add_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); int sta_id, ret = 0; lockdep_assert_held(&mvm->mutex); if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) sta_id = iwl_mvm_find_free_sta_id(mvm, ieee80211_vif_type_p2p(vif)); else sta_id = mvm_sta->deflink.sta_id; if (sta_id == IWL_MVM_INVALID_STA) return -ENOSPC; spin_lock_init(&mvm_sta->lock); /* if this is a HW restart re-alloc existing queues */ if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { struct iwl_mvm_int_sta tmp_sta = { .sta_id = sta_id, .type = mvm_sta->sta_type, }; /* First add an empty station since allocating * a queue requires a valid station */ ret = iwl_mvm_mld_add_int_sta_to_fw(mvm, &tmp_sta, vif->bss_conf.bssid, mvmvif->deflink.phy_ctxt->id); if (ret) return ret; iwl_mvm_realloc_queues_after_restart(mvm, sta); } else { ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id, STATION_TYPE_PEER); } ret = iwl_mvm_mld_cfg_sta(mvm, sta, vif, mvmvif->deflink.phy_ctxt->id); if (ret) return ret; if (vif->type == NL80211_IFTYPE_STATION) { if (!sta->tdls) { WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA); mvmvif->deflink.ap_sta_id = sta_id; } else { WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA); } } rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); return 0; } int iwl_mvm_mld_update_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); lockdep_assert_held(&mvm->mutex); return iwl_mvm_mld_cfg_sta(mvm, sta, vif, mvmvif->deflink.phy_ctxt->id); } static void iwl_mvm_mld_disable_sta_queues(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); int i; lockdep_assert_held(&mvm->mutex); for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) continue; iwl_mvm_mld_disable_txq(mvm, mvm_sta->deflink.sta_id, &mvm_sta->tid_data[i].txq_id, i); mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; } for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(sta->txq[i]); mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; } } int iwl_mvm_mld_rm_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); int ret; lockdep_assert_held(&mvm->mutex); kfree(mvm_sta->dup_data); /* flush its queues here since we are freeing mvm_sta */ ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); if (ret) return ret; ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); if (ret) return ret; iwl_mvm_mld_disable_sta_queues(mvm, vif, sta); if (iwl_mvm_sta_del(mvm, vif, sta, &ret)) return ret; ret = iwl_mvm_mld_rm_sta_from_fw(mvm, mvm_sta->deflink.sta_id); RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL); return ret; } int iwl_mvm_mld_rm_sta_id(struct iwl_mvm *mvm, struct ieee80211_vif *vif, u8 sta_id) { int ret = iwl_mvm_mld_rm_sta_from_fw(mvm, sta_id); lockdep_assert_held(&mvm->mutex); RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); return ret; } void iwl_mvm_mld_sta_modify_disable_tx(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, bool disable) { struct iwl_mvm_sta_disable_tx_cmd cmd; int ret; cmd.sta_id = cpu_to_le32(mvmsta->deflink.sta_id); cmd.disable = cpu_to_le32(disable); ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, STA_DISABLE_TX_CMD), CMD_ASYNC, sizeof(cmd), &cmd); if (ret) IWL_ERR(mvm, "Failed to send STA_DISABLE_TX_CMD command (%d)\n", ret); } void iwl_mvm_mld_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, struct ieee80211_sta *sta, bool disable) { struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); spin_lock_bh(&mvm_sta->lock); if (mvm_sta->disable_tx == disable) { spin_unlock_bh(&mvm_sta->lock); return; } iwl_mvm_mld_sta_modify_disable_tx(mvm, mvm_sta, disable); spin_unlock_bh(&mvm_sta->lock); } void iwl_mvm_mld_modify_all_sta_disable_tx(struct iwl_mvm *mvm, struct iwl_mvm_vif *mvmvif, bool disable) { struct ieee80211_sta *sta; struct iwl_mvm_sta *mvm_sta; int i; rcu_read_lock(); /* Block/unblock all the stations of the given mvmvif */ for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); if (IS_ERR_OR_NULL(sta)) continue; mvm_sta = iwl_mvm_sta_from_mac80211(sta); if (mvm_sta->mac_id_n_color != FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) continue; iwl_mvm_mld_sta_modify_disable_tx(mvm, mvm_sta, disable); } rcu_read_unlock(); }