X-Git-Url: http://git.cascardo.info/?p=cascardo%2Flinux.git;a=blobdiff_plain;f=drivers%2Fnet%2Fwireless%2Fiwlwifi%2Fmvm%2Fmac80211.c;h=3756c03e752f033ab914f789bb0a87647556f27c;hp=585fe5b7100fb8750bed29eda65d91121422497c;hb=64bb1b944b554a751b518b09c3d596f6b6c0ce31;hpb=b1924c2ec1db98278100010ef87b54406d5ce612 diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c index 585fe5b7100f..3756c03e752f 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c @@ -69,6 +69,7 @@ #include #include #include +#include #include #include #include @@ -84,6 +85,7 @@ #include "testmode.h" #include "iwl-fw-error-dump.h" #include "iwl-prph.h" +#include "iwl-csr.h" static const struct ieee80211_iface_limit iwl_mvm_limits[] = { { @@ -104,7 +106,7 @@ static const struct ieee80211_iface_limit iwl_mvm_limits[] = { static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { { - .num_different_channels = 1, + .num_different_channels = 2, .max_interfaces = 3, .limits = iwl_mvm_limits, .n_limits = ARRAY_SIZE(iwl_mvm_limits), @@ -253,6 +255,26 @@ static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm, spin_unlock_bh(&mvm->refs_lock); } +bool iwl_mvm_ref_taken(struct iwl_mvm *mvm) +{ + int i; + bool taken = false; + + if (!iwl_mvm_is_d0i3_supported(mvm)) + return true; + + spin_lock_bh(&mvm->refs_lock); + for (i = 0; i < IWL_MVM_REF_COUNT; i++) { + if (mvm->refs[i]) { + taken = true; + break; + } + } + spin_unlock_bh(&mvm->refs_lock); + + return taken; +} + int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) { iwl_mvm_ref(mvm, ref_type); @@ -302,7 +324,8 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | IEEE80211_RADIOTAP_MCS_HAVE_STBC; - hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC; + hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | + IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; hw->rate_control_algorithm = "iwl-mvm-rs"; /* @@ -315,15 +338,19 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) hw->flags |= IEEE80211_HW_MFP_CAPABLE; if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT && - IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 && !iwlwifi_mod_params.uapsd_disable) { hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD; hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; } - if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) + if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN || + mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) { hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS; + hw->wiphy->features |= + NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | + NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR; + } hw->sta_data_size = sizeof(struct iwl_mvm_sta); hw->vif_data_size = sizeof(struct iwl_mvm_vif); @@ -343,8 +370,7 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD) hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; - if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW) - hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; + hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; hw->wiphy->n_iface_combinations = @@ -352,6 +378,8 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) hw->wiphy->max_remain_on_channel_duration = 10000; hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; + /* we can compensate an offset of up to 3 channels = 15 MHz */ + hw->wiphy->max_adj_channel_rssi_comp = 3 * 5; /* Extract MAC address */ memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); @@ -402,7 +430,8 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) NL80211_FEATURE_LOW_PRIORITY_SCAN | NL80211_FEATURE_P2P_GO_OPPPS | NL80211_FEATURE_DYNAMIC_SMPS | - NL80211_FEATURE_STATIC_SMPS; + NL80211_FEATURE_STATIC_SMPS | + NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) @@ -433,14 +462,17 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) device_can_wakeup(mvm->trans->dev)) { mvm->wowlan.flags = WIPHY_WOWLAN_ANY; hw->wiphy->wowlan = &mvm->wowlan; - } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len && + } + + if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len && mvm->trans->ops->d3_suspend && mvm->trans->ops->d3_resume && device_can_wakeup(mvm->trans->dev)) { - mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT | - WIPHY_WOWLAN_DISCONNECT | - WIPHY_WOWLAN_EAP_IDENTITY_REQ | - WIPHY_WOWLAN_RFKILL_RELEASE; + mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | + WIPHY_WOWLAN_DISCONNECT | + WIPHY_WOWLAN_EAP_IDENTITY_REQ | + WIPHY_WOWLAN_RFKILL_RELEASE | + WIPHY_WOWLAN_NET_DETECT; if (!iwlwifi_mod_params.sw_crypto) mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | WIPHY_WOWLAN_GTK_REKEY_FAILURE | @@ -449,6 +481,7 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; + mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support; hw->wiphy->wowlan = &mvm->wowlan; } @@ -463,6 +496,17 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) if (ret) return ret; + if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) { + IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); + hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; + } + + if (mvm->fw->ucode_capa.capa[0] & + IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) { + IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); + hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; + } + ret = ieee80211_register_hw(mvm->hw); if (ret) iwl_mvm_leds_exit(mvm); @@ -679,32 +723,85 @@ static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); } -#ifdef CONFIG_IWLWIFI_DEBUGFS +static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count, + const void *data, size_t datalen) +{ + const struct iwl_mvm_dump_ptrs *dump_ptrs = data; + ssize_t bytes_read; + ssize_t bytes_read_trans; + + if (offset < dump_ptrs->op_mode_len) { + bytes_read = min_t(ssize_t, count, + dump_ptrs->op_mode_len - offset); + memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset, + bytes_read); + offset += bytes_read; + count -= bytes_read; + + if (count == 0) + return bytes_read; + } else { + bytes_read = 0; + } + + if (!dump_ptrs->trans_ptr) + return bytes_read; + + offset -= dump_ptrs->op_mode_len; + bytes_read_trans = min_t(ssize_t, count, + dump_ptrs->trans_ptr->len - offset); + memcpy(buffer + bytes_read, + (u8 *)dump_ptrs->trans_ptr->data + offset, + bytes_read_trans); + + return bytes_read + bytes_read_trans; +} + +static void iwl_mvm_free_coredump(const void *data) +{ + const struct iwl_mvm_dump_ptrs *fw_error_dump = data; + + vfree(fw_error_dump->op_mode_ptr); + vfree(fw_error_dump->trans_ptr); + kfree(fw_error_dump); +} + void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) { - static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL }; struct iwl_fw_error_dump_file *dump_file; struct iwl_fw_error_dump_data *dump_data; struct iwl_fw_error_dump_info *dump_info; + struct iwl_fw_error_dump_mem *dump_mem; struct iwl_mvm_dump_ptrs *fw_error_dump; - const struct fw_img *img; u32 sram_len, sram_ofs; u32 file_len, rxf_len; unsigned long flags; int reg_val; + u32 smem_len = mvm->cfg->smem_len; lockdep_assert_held(&mvm->mutex); - if (mvm->fw_error_dump) - return; + /* W/A for 8000 HW family A-step */ + if (mvm->cfg->smem_len && + mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 && + CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_A_STEP) + smem_len = 0x38000; - fw_error_dump = kzalloc(sizeof(*mvm->fw_error_dump), GFP_KERNEL); + fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL); if (!fw_error_dump) return; - img = &mvm->fw->img[mvm->cur_ucode]; - sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset; - sram_len = img->sec[IWL_UCODE_SECTION_DATA].len; + /* SRAM - include stack CCM if driver knows the values for it */ + if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) { + const struct fw_img *img; + + img = &mvm->fw->img[mvm->cur_ucode]; + sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset; + sram_len = img->sec[IWL_UCODE_SECTION_DATA].len; + } else { + sram_ofs = mvm->cfg->dccm_offset; + sram_len = mvm->cfg->dccm_len; + } /* reading buffer size */ reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR); @@ -715,10 +812,14 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) file_len = sizeof(*dump_file) + sizeof(*dump_data) * 3 + - sram_len + + sram_len + sizeof(*dump_mem) + rxf_len + sizeof(*dump_info); + /* Make room for the SMEM, if it exists */ + if (smem_len) + file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len; + dump_file = vzalloc(file_len); if (!dump_file) { kfree(fw_error_dump); @@ -737,6 +838,7 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ? cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) : cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8); + dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev)); memcpy(dump_info->fw_human_readable, mvm->fw->human_readable, sizeof(dump_info->fw_human_readable)); strncpy(dump_info->dev_human_readable, mvm->cfg->name, @@ -763,31 +865,54 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) } dump_data = iwl_fw_error_next_data(dump_data); - dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM); - dump_data->len = cpu_to_le32(sram_len); - iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data, + dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); + dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem)); + dump_mem = (void *)dump_data->data; + dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM); + dump_mem->offset = cpu_to_le32(sram_ofs); + iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data, sram_len); + if (smem_len) { + dump_data = iwl_fw_error_next_data(dump_data); + dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); + dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem)); + dump_mem = (void *)dump_data->data; + dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM); + dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset); + iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset, + dump_mem->data, smem_len); + } + fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans); fw_error_dump->op_mode_len = file_len; if (fw_error_dump->trans_ptr) file_len += fw_error_dump->trans_ptr->len; dump_file->file_len = cpu_to_le32(file_len); - mvm->fw_error_dump = fw_error_dump; - /* notify the userspace about the error we had */ - kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env); + dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0, + GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump); } -#endif static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) { - iwl_mvm_fw_error_dump(mvm); + /* clear the D3 reconfig, we only need it to avoid dumping a + * firmware coredump on reconfiguration, we shouldn't do that + * on D3->D0 transition + */ + if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) + iwl_mvm_fw_error_dump(mvm); + + /* cleanup all stale references (scan, roc), but keep the + * ucode_down ref until reconfig is complete + */ + iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); iwl_trans_stop_device(mvm->trans); mvm->scan_status = IWL_MVM_SCAN_NONE; mvm->ps_disabled = false; + mvm->calibrating = false; /* just in case one was running */ ieee80211_remain_on_channel_expired(mvm->hw); @@ -802,6 +927,7 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) iwl_mvm_reset_phy_ctxts(mvm); memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained)); + memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained)); memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old)); memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); @@ -811,10 +937,6 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) ieee80211_wake_queues(mvm->hw); - /* cleanup all stale references (scan, roc), but keep the - * ucode_down ref until reconfig is complete */ - iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); - /* clear any stale d0i3 state */ clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); @@ -851,6 +973,19 @@ static int iwl_mvm_mac_start(struct ieee80211_hw *hw) struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; + /* Some hw restart cleanups must not hold the mutex */ + if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { + /* + * Make sure we are out of d0i3. This is needed + * to make sure the reference accounting is correct + * (and there is no stale d0i3_exit_work). + */ + wait_event_timeout(mvm->d0i3_exit_waitq, + !test_bit(IWL_MVM_STATUS_IN_D0I3, + &mvm->status), + HZ); + } + mutex_lock(&mvm->mutex); ret = __iwl_mvm_mac_start(mvm); mutex_unlock(&mvm->mutex); @@ -858,9 +993,8 @@ static int iwl_mvm_mac_start(struct ieee80211_hw *hw) return ret; } -static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw) +static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) { - struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; mutex_lock(&mvm->mutex); @@ -875,15 +1009,68 @@ static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw) /* allow transport/FW low power modes */ iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); + /* + * If we have TDLS peers, remove them. We don't know the last seqno/PN + * of packets the FW sent out, so we must reconnect. + */ + iwl_mvm_teardown_tdls_peers(mvm); + mutex_unlock(&mvm->mutex); } +static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) +{ + bool exit_now; + + if (!iwl_mvm_is_d0i3_supported(mvm)) + return; + + mutex_lock(&mvm->d0i3_suspend_mutex); + __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); + exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP, + &mvm->d0i3_suspend_flags); + mutex_unlock(&mvm->d0i3_suspend_mutex); + + if (exit_now) { + IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n"); + _iwl_mvm_exit_d0i3(mvm); + } + + if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND) + if (!wait_event_timeout(mvm->d0i3_exit_waitq, + !test_bit(IWL_MVM_STATUS_IN_D0I3, + &mvm->status), + HZ)) + WARN_ONCE(1, "D0i3 exit on resume timed out\n"); +} + +static void +iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, + enum ieee80211_reconfig_type reconfig_type) +{ + struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); + + switch (reconfig_type) { + case IEEE80211_RECONFIG_TYPE_RESTART: + iwl_mvm_restart_complete(mvm); + break; + case IEEE80211_RECONFIG_TYPE_SUSPEND: + iwl_mvm_resume_complete(mvm); + break; + } +} + void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) { lockdep_assert_held(&mvm->mutex); - /* disallow low power states when the FW is down */ - iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); + /* + * Disallow low power states when the FW is down by taking + * the UCODE_DOWN ref. in case of ongoing hw restart the + * ref is already taken, so don't take it again. + */ + if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) + iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); /* async_handlers_wk is now blocked */ @@ -901,6 +1088,12 @@ void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) /* the fw is stopped, the aux sta is dead: clean up driver state */ iwl_mvm_del_aux_sta(mvm); + /* + * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete() + * won't be called in this case). + */ + clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); + mvm->ucode_loaded = false; } @@ -1086,7 +1279,7 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { - u32 tfd_msk = iwl_mvm_mac_get_queues_mask(mvm, vif); + u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif); if (tfd_msk) { mutex_lock(&mvm->mutex); @@ -1382,6 +1575,9 @@ bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, .cmd = cmd, }; + if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) + return false; + memset(cmd, 0, sizeof(*cmd)); cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); cmd->max_macs = ARRAY_SIZE(cmd->macs); @@ -1834,9 +2030,11 @@ static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, req->n_channels > mvm->fw->ucode_capa.n_scan_channels) return -EINVAL; - ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED); - if (ret) - return ret; + if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { + ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED); + if (ret) + return ret; + } mutex_lock(&mvm->mutex); @@ -1847,7 +2045,9 @@ static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN); - if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) + if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) + ret = iwl_mvm_scan_umac(mvm, vif, hw_req); + else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req); else ret = iwl_mvm_scan_request(mvm, vif, req); @@ -1948,7 +2148,7 @@ static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, struct ieee80211_sta *sta) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); - struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; + struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); /* * This is called before mac80211 does RCU synchronisation, @@ -2064,6 +2264,15 @@ static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, out_unlock: mutex_unlock(&mvm->mutex); + if (sta->tdls && ret == 0) { + if (old_state == IEEE80211_STA_NOTEXIST && + new_state == IEEE80211_STA_NONE) + ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); + else if (old_state == IEEE80211_STA_NONE && + new_state == IEEE80211_STA_NOTEXIST) + ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); + } + return ret; } @@ -2146,9 +2355,11 @@ static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; - ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS); - if (ret) - return ret; + if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { + ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS); + if (ret) + return ret; + } mutex_lock(&mvm->mutex); @@ -2168,27 +2379,10 @@ static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, goto out; } - mvm->scan_status = IWL_MVM_SCAN_SCHED; - - if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) { - ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies); - if (ret) - goto err; - } - - ret = iwl_mvm_config_sched_scan_profiles(mvm, req); + ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies); if (ret) - goto err; - - if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) - ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies); - else - ret = iwl_mvm_sched_scan_start(mvm, req); + mvm->scan_status = IWL_MVM_SCAN_NONE; - if (!ret) - goto out; -err: - mvm->scan_status = IWL_MVM_SCAN_NONE; out: mutex_unlock(&mvm->mutex); return ret; @@ -2206,6 +2400,7 @@ static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, iwl_mvm_wait_for_async_handlers(mvm); return ret; + } static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, @@ -2234,12 +2429,16 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, break; case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: - /* - * Support for TX only, at least for now, so accept - * the key and do nothing else. Then mac80211 will - * pass it for TX but we don't have to use it for RX. + /* For non-client mode, only use WEP keys for TX as we probably + * don't have a station yet anyway and would then have to keep + * track of the keys, linking them to each of the clients/peers + * as they appear. For now, don't do that, for performance WEP + * offload doesn't really matter much, but we need it for some + * other offload features in client mode. */ - return 0; + if (vif->type != NL80211_IFTYPE_STATION) + return 0; + break; default: /* currently FW supports only one optional cipher scheme */ if (hw->n_cipher_schemes && @@ -2447,9 +2646,15 @@ static int iwl_mvm_roc(struct ieee80211_hw *hw, switch (vif->type) { case NL80211_IFTYPE_STATION: - /* Use aux roc framework (HS20) */ - ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, - vif, duration); + if (mvm->fw->ucode_capa.capa[0] & + IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) { + /* Use aux roc framework (HS20) */ + ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, + vif, duration); + goto out_unlock; + } + IWL_ERR(mvm, "hotspot not supported\n"); + ret = -EINVAL; goto out_unlock; case NL80211_IFTYPE_P2P_DEVICE: /* handle below */ @@ -2556,7 +2761,7 @@ static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) IWL_DEBUG_MAC80211(mvm, "enter\n"); mutex_lock(&mvm->mutex); - iwl_mvm_stop_p2p_roc(mvm); + iwl_mvm_stop_roc(mvm); mutex_unlock(&mvm->mutex); IWL_DEBUG_MAC80211(mvm, "leave\n"); @@ -2669,8 +2874,8 @@ static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, switch (vif->type) { case NL80211_IFTYPE_AP: - /* Unless it's a CSA flow we have nothing to do here */ - if (vif->csa_active) { + /* only needed if we're switching chanctx (i.e. during CSA) */ + if (switching_chanctx) { mvmvif->ap_ibss_active = true; break; } @@ -2714,23 +2919,32 @@ static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, } /* Handle binding during CSA */ - if ((vif->type == NL80211_IFTYPE_AP) || - (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) { + if (vif->type == NL80211_IFTYPE_AP) { iwl_mvm_update_quotas(mvm, NULL); iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); } - if (vif->csa_active && vif->type == NL80211_IFTYPE_STATION) { - struct iwl_mvm_sta *mvmsta; + if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { + u32 duration = 2 * vif->bss_conf.beacon_int; - mvmsta = iwl_mvm_sta_from_staid_protected(mvm, - mvmvif->ap_sta_id); + /* iwl_mvm_protect_session() reads directly from the + * device (the system time), so make sure it is + * available. + */ + ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); + if (ret) + goto out_remove_binding; - if (WARN_ON(!mvmsta)) - goto out; + /* Protect the session to make sure we hear the first + * beacon on the new channel. + */ + iwl_mvm_protect_session(mvm, vif, duration, duration, + vif->bss_conf.beacon_int / 2, + true); - /* TODO: only re-enable after the first beacon */ - iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); + iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); + + iwl_mvm_update_quotas(mvm, NULL); } goto out; @@ -2764,7 +2978,6 @@ static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct ieee80211_vif *disabled_vif = NULL; - struct iwl_mvm_sta *mvmsta; lockdep_assert_held(&mvm->mutex); @@ -2779,9 +2992,11 @@ static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, break; case NL80211_IFTYPE_AP: /* This part is triggered only during CSA */ - if (!vif->csa_active || !mvmvif->ap_ibss_active) + if (!switching_chanctx || !mvmvif->ap_ibss_active) goto out; + mvmvif->csa_countdown = false; + /* Set CS bit on all the stations */ iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); @@ -2796,12 +3011,6 @@ static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, disabled_vif = vif; - mvmsta = iwl_mvm_sta_from_staid_protected(mvm, - mvmvif->ap_sta_id); - - if (!WARN_ON(!mvmsta)) - iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); - iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); break; default: @@ -2827,18 +3036,12 @@ static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, mutex_unlock(&mvm->mutex); } -static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, - struct ieee80211_vif_chanctx_switch *vifs, - int n_vifs, - enum ieee80211_chanctx_switch_mode mode) +static int +iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, + struct ieee80211_vif_chanctx_switch *vifs) { - struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; - /* we only support SWAP_CONTEXTS and with a single-vif right now */ - if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1) - return -EOPNOTSUPP; - mutex_lock(&mvm->mutex); __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); @@ -2867,15 +3070,51 @@ out_remove: __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); out_reassign: - ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx); - if (ret) { + if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); goto out_restart; } - ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, + if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, + true)) { + IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); + goto out_restart; + } + + goto out; + +out_restart: + /* things keep failing, better restart the hw */ + iwl_mvm_nic_restart(mvm, false); + +out: + mutex_unlock(&mvm->mutex); + + return ret; +} + +static int +iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, + struct ieee80211_vif_chanctx_switch *vifs) +{ + int ret; + + mutex_lock(&mvm->mutex); + __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); + + ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, true); if (ret) { + IWL_ERR(mvm, + "failed to assign new_ctx during channel switch\n"); + goto out_reassign; + } + + goto out; + +out_reassign: + if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, + true)) { IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); goto out_restart; } @@ -2888,6 +3127,34 @@ out_restart: out: mutex_unlock(&mvm->mutex); + + return ret; +} + +static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, + struct ieee80211_vif_chanctx_switch *vifs, + int n_vifs, + enum ieee80211_chanctx_switch_mode mode) +{ + struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); + int ret; + + /* we only support a single-vif right now */ + if (n_vifs > 1) + return -EOPNOTSUPP; + + switch (mode) { + case CHANCTX_SWMODE_SWAP_CONTEXTS: + ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); + break; + case CHANCTX_SWMODE_REASSIGN_VIF: + ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); + break; + default: + ret = -EOPNOTSUPP; + break; + } + return ret; } @@ -2896,7 +3163,7 @@ static int iwl_mvm_set_tim(struct ieee80211_hw *hw, bool set) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); - struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; + struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); if (!mvm_sta || !mvm_sta->vif) { IWL_ERR(mvm, "Station is not associated to a vif\n"); @@ -2973,27 +3240,134 @@ static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, } #endif -static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct cfg80211_chan_def *chandef) +static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_channel_switch *chsw) +{ + /* By implementing this operation, we prevent mac80211 from + * starting its own channel switch timer, so that we can call + * ieee80211_chswitch_done() ourselves at the right time + * (which is when the absence time event starts). + */ + + IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), + "dummy channel switch op\n"); +} + +static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_channel_switch *chsw) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct ieee80211_vif *csa_vif; + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + u32 apply_time; + int ret; mutex_lock(&mvm->mutex); - csa_vif = rcu_dereference_protected(mvm->csa_vif, - lockdep_is_held(&mvm->mutex)); - if (WARN(csa_vif && csa_vif->csa_active, - "Another CSA is already in progress")) + IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", + chsw->chandef.center_freq1); + + switch (vif->type) { + case NL80211_IFTYPE_AP: + csa_vif = + rcu_dereference_protected(mvm->csa_vif, + lockdep_is_held(&mvm->mutex)); + if (WARN_ONCE(csa_vif && csa_vif->csa_active, + "Another CSA is already in progress")) { + ret = -EBUSY; + goto out_unlock; + } + + rcu_assign_pointer(mvm->csa_vif, vif); + + if (WARN_ONCE(mvmvif->csa_countdown, + "Previous CSA countdown didn't complete")) { + ret = -EBUSY; + goto out_unlock; + } + + break; + case NL80211_IFTYPE_STATION: + /* Schedule the time event to a bit before beacon 1, + * to make sure we're in the new channel when the + * GO/AP arrives. + */ + apply_time = chsw->device_timestamp + + ((vif->bss_conf.beacon_int * (chsw->count - 1) - + IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); + + if (chsw->block_tx) + iwl_mvm_csa_client_absent(mvm, vif); + + iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, + apply_time); + if (mvmvif->bf_data.bf_enabled) { + ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); + if (ret) + goto out_unlock; + } + + break; + default: + break; + } + + mvmvif->ps_disabled = true; + + ret = iwl_mvm_power_update_ps(mvm); + if (ret) goto out_unlock; - IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n", - chandef->center_freq1); - rcu_assign_pointer(mvm->csa_vif, vif); + /* we won't be on this channel any longer */ + iwl_mvm_teardown_tdls_peers(mvm); out_unlock: mutex_unlock(&mvm->mutex); + + return ret; +} + +static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); + int ret; + + mutex_lock(&mvm->mutex); + + if (vif->type == NL80211_IFTYPE_STATION) { + struct iwl_mvm_sta *mvmsta; + + mvmsta = iwl_mvm_sta_from_staid_protected(mvm, + mvmvif->ap_sta_id); + + if (WARN_ON(!mvmsta)) { + ret = -EIO; + goto out_unlock; + } + + iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); + + iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); + + ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); + if (ret) + goto out_unlock; + + iwl_mvm_stop_session_protection(mvm, vif); + } + + mvmvif->ps_disabled = false; + + ret = iwl_mvm_power_update_ps(mvm); + +out_unlock: + mutex_unlock(&mvm->mutex); + + return ret; } static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, @@ -3002,33 +3376,52 @@ static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_vif *mvmvif; struct iwl_mvm_sta *mvmsta; + struct ieee80211_sta *sta; + int i; + u32 msk = 0; if (!vif || vif->type != NL80211_IFTYPE_STATION) return; mutex_lock(&mvm->mutex); mvmvif = iwl_mvm_vif_from_mac80211(vif); - mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id); - if (WARN_ON_ONCE(!mvmsta)) - goto done; + /* flush the AP-station and all TDLS peers */ + for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { + sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], + lockdep_is_held(&mvm->mutex)); + if (IS_ERR_OR_NULL(sta)) + continue; + + mvmsta = iwl_mvm_sta_from_mac80211(sta); + if (mvmsta->vif != vif) + continue; + + /* make sure only TDLS peers or the AP are flushed */ + WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); + + msk |= mvmsta->tfd_queue_msk; + } if (drop) { - if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true)) + if (iwl_mvm_flush_tx_path(mvm, msk, true)) IWL_ERR(mvm, "flush request fail\n"); + mutex_unlock(&mvm->mutex); } else { - iwl_trans_wait_tx_queue_empty(mvm->trans, - mvmsta->tfd_queue_msk); + mutex_unlock(&mvm->mutex); + + /* this can take a while, and we may need/want other operations + * to succeed while doing this, so do it without the mutex held + */ + iwl_trans_wait_tx_queue_empty(mvm->trans, msk); } -done: - mutex_unlock(&mvm->mutex); } const struct ieee80211_ops iwl_mvm_hw_ops = { .tx = iwl_mvm_mac_tx, .ampdu_action = iwl_mvm_mac_ampdu_action, .start = iwl_mvm_mac_start, - .restart_complete = iwl_mvm_mac_restart_complete, + .reconfig_complete = iwl_mvm_mac_reconfig_complete, .stop = iwl_mvm_mac_stop, .add_interface = iwl_mvm_mac_add_interface, .remove_interface = iwl_mvm_mac_remove_interface, @@ -3069,7 +3462,13 @@ const struct ieee80211_ops iwl_mvm_hw_ops = { .set_tim = iwl_mvm_set_tim, - .channel_switch_beacon = iwl_mvm_channel_switch_beacon, + .channel_switch = iwl_mvm_channel_switch, + .pre_channel_switch = iwl_mvm_pre_channel_switch, + .post_channel_switch = iwl_mvm_post_channel_switch, + + .tdls_channel_switch = iwl_mvm_tdls_channel_switch, + .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, + .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)