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Add support for FTM responder for hardware/firmware combinations that advertise support for it. Signed-off-by: Johannes Berg <[email protected]> Signed-off-by: Avraham Stern <[email protected]> Signed-off-by: Luca Coelho <[email protected]>
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| /****************************************************************************** | ||
| * | ||
| * This file is provided under a dual BSD/GPLv2 license. When using or | ||
| * redistributing this file, you may do so under either license. | ||
| * | ||
| * GPL LICENSE SUMMARY | ||
| * | ||
| * Copyright(c) 2015 - 2017 Intel Deutschland GmbH | ||
| * Copyright (C) 2018 Intel Corporation | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of version 2 of the GNU General Public License as | ||
| * published by the Free Software Foundation. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, but | ||
| * WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| * General Public License for more details. | ||
| * | ||
| * The full GNU General Public License is included in this distribution | ||
| * in the file called COPYING. | ||
| * | ||
| * Contact Information: | ||
| * Intel Linux Wireless <[email protected]> | ||
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | ||
| * | ||
| * BSD LICENSE | ||
| * | ||
| * Copyright(c) 2015 - 2017 Intel Deutschland GmbH | ||
| * Copyright (C) 2018 Intel Corporation | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions | ||
| * are met: | ||
| * | ||
| * * Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * * Redistributions in binary form must reproduce the above copyright | ||
| * notice, this list of conditions and the following disclaimer in | ||
| * the documentation and/or other materials provided with the | ||
| * distribution. | ||
| * * Neither the name Intel Corporation nor the names of its | ||
| * contributors may be used to endorse or promote products derived | ||
| * from this software without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| * | ||
| *****************************************************************************/ | ||
| #include <net/cfg80211.h> | ||
| #include <linux/etherdevice.h> | ||
| #include "mvm.h" | ||
| #include "constants.h" | ||
|
|
||
| static int | ||
| iwl_mvm_ftm_responder_cmd(struct iwl_mvm *mvm, | ||
| struct ieee80211_vif *vif, | ||
| struct cfg80211_chan_def *chandef) | ||
| { | ||
| struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | ||
| struct iwl_tof_responder_config_cmd cmd = { | ||
| .channel_num = chandef->chan->hw_value, | ||
| .cmd_valid_fields = | ||
| cpu_to_le32(IWL_TOF_RESPONDER_CMD_VALID_CHAN_INFO | | ||
| IWL_TOF_RESPONDER_CMD_VALID_BSSID | | ||
| IWL_TOF_RESPONDER_CMD_VALID_STA_ID), | ||
| .sta_id = mvmvif->bcast_sta.sta_id, | ||
| }; | ||
|
|
||
| lockdep_assert_held(&mvm->mutex); | ||
|
|
||
| switch (chandef->width) { | ||
| case NL80211_CHAN_WIDTH_20_NOHT: | ||
| cmd.bandwidth = IWL_TOF_BW_20_LEGACY; | ||
| break; | ||
| case NL80211_CHAN_WIDTH_20: | ||
| cmd.bandwidth = IWL_TOF_BW_20_HT; | ||
| break; | ||
| case NL80211_CHAN_WIDTH_40: | ||
| cmd.bandwidth = IWL_TOF_BW_40; | ||
| cmd.ctrl_ch_position = iwl_mvm_get_ctrl_pos(chandef); | ||
| break; | ||
| case NL80211_CHAN_WIDTH_80: | ||
| cmd.bandwidth = IWL_TOF_BW_80; | ||
| cmd.ctrl_ch_position = iwl_mvm_get_ctrl_pos(chandef); | ||
| break; | ||
| default: | ||
| WARN_ON(1); | ||
| return -EINVAL; | ||
| } | ||
|
|
||
| memcpy(cmd.bssid, vif->addr, ETH_ALEN); | ||
|
|
||
| return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_RESPONDER_CONFIG_CMD, | ||
| LOCATION_GROUP, 0), | ||
| 0, sizeof(cmd), &cmd); | ||
| } | ||
|
|
||
| static int | ||
| iwl_mvm_ftm_responder_dyn_cfg_cmd(struct iwl_mvm *mvm, | ||
| struct ieee80211_vif *vif, | ||
| struct ieee80211_ftm_responder_params *params) | ||
| { | ||
| struct iwl_tof_responder_dyn_config_cmd cmd = { | ||
| .lci_len = cpu_to_le32(params->lci_len + 2), | ||
| .civic_len = cpu_to_le32(params->civicloc_len + 2), | ||
| }; | ||
| u8 data[IWL_LCI_CIVIC_IE_MAX_SIZE] = {0}; | ||
| struct iwl_host_cmd hcmd = { | ||
| .id = iwl_cmd_id(TOF_RESPONDER_DYN_CONFIG_CMD, | ||
| LOCATION_GROUP, 0), | ||
| .data[0] = &cmd, | ||
| .len[0] = sizeof(cmd), | ||
| .data[1] = &data, | ||
| /* .len[1] set later */ | ||
| /* may not be able to DMA from stack */ | ||
| .dataflags[1] = IWL_HCMD_DFL_DUP, | ||
| }; | ||
| u32 aligned_lci_len = ALIGN(params->lci_len + 2, 4); | ||
| u32 aligned_civicloc_len = ALIGN(params->civicloc_len + 2, 4); | ||
| u8 *pos = data; | ||
|
|
||
| lockdep_assert_held(&mvm->mutex); | ||
|
|
||
| if (aligned_lci_len + aligned_civicloc_len > sizeof(data)) { | ||
| IWL_ERR(mvm, "LCI/civicloc data too big (%zd + %zd)\n", | ||
| params->lci_len, params->civicloc_len); | ||
| return -ENOBUFS; | ||
| } | ||
|
|
||
| pos[0] = WLAN_EID_MEASURE_REPORT; | ||
| pos[1] = params->lci_len; | ||
| memcpy(pos + 2, params->lci, params->lci_len); | ||
|
|
||
| pos += aligned_lci_len; | ||
| pos[0] = WLAN_EID_MEASURE_REPORT; | ||
| pos[1] = params->civicloc_len; | ||
| memcpy(pos + 2, params->civicloc, params->civicloc_len); | ||
|
|
||
| hcmd.len[1] = aligned_lci_len + aligned_civicloc_len; | ||
|
|
||
| return iwl_mvm_send_cmd(mvm, &hcmd); | ||
| } | ||
|
|
||
| int iwl_mvm_ftm_start_responder(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | ||
| { | ||
| struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | ||
| struct ieee80211_ftm_responder_params *params; | ||
| struct ieee80211_chanctx_conf ctx, *pctx; | ||
| u16 *phy_ctxt_id; | ||
| struct iwl_mvm_phy_ctxt *phy_ctxt; | ||
| int ret; | ||
|
|
||
| params = vif->bss_conf.ftmr_params; | ||
|
|
||
| lockdep_assert_held(&mvm->mutex); | ||
|
|
||
| if (WARN_ON_ONCE(!vif->bss_conf.ftm_responder)) | ||
| return -EINVAL; | ||
|
|
||
| if (vif->p2p || vif->type != NL80211_IFTYPE_AP || | ||
| !mvmvif->ap_ibss_active) { | ||
| IWL_ERR(mvm, "Cannot start responder, not in AP mode\n"); | ||
| return -EIO; | ||
| } | ||
|
|
||
| rcu_read_lock(); | ||
| pctx = rcu_dereference(vif->chanctx_conf); | ||
| /* Copy the ctx to unlock the rcu and send the phy ctxt. We don't care | ||
| * about changes in the ctx after releasing the lock because the driver | ||
| * is still protected by the mutex. */ | ||
| ctx = *pctx; | ||
| phy_ctxt_id = (u16 *)pctx->drv_priv; | ||
| rcu_read_unlock(); | ||
|
|
||
| phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; | ||
| ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx.def, | ||
| ctx.rx_chains_static, | ||
| ctx.rx_chains_dynamic); | ||
| if (ret) | ||
| return ret; | ||
|
|
||
| ret = iwl_mvm_ftm_responder_cmd(mvm, vif, &ctx.def); | ||
| if (ret) | ||
| return ret; | ||
|
|
||
| if (params) | ||
| ret = iwl_mvm_ftm_responder_dyn_cfg_cmd(mvm, vif, params); | ||
|
|
||
| return ret; | ||
| } | ||
|
|
||
| void iwl_mvm_ftm_restart_responder(struct iwl_mvm *mvm, | ||
| struct ieee80211_vif *vif) | ||
| { | ||
| if (!vif->bss_conf.ftm_responder) | ||
| return; | ||
|
|
||
| iwl_mvm_ftm_start_responder(mvm, vif); | ||
| } | ||
|
|
||
| void iwl_mvm_ftm_responder_stats(struct iwl_mvm *mvm, | ||
| struct iwl_rx_cmd_buffer *rxb) | ||
| { | ||
| struct iwl_rx_packet *pkt = rxb_addr(rxb); | ||
| struct iwl_ftm_responder_stats *resp = (void *)pkt->data; | ||
| struct cfg80211_ftm_responder_stats *stats = &mvm->ftm_resp_stats; | ||
| u32 flags = le32_to_cpu(resp->flags); | ||
|
|
||
| if (resp->success_ftm == resp->ftm_per_burst) | ||
| stats->success_num++; | ||
| else if (resp->success_ftm >= 2) | ||
| stats->partial_num++; | ||
| else | ||
| stats->failed_num++; | ||
|
|
||
| if ((flags & FTM_RESP_STAT_ASAP_REQ) && | ||
| (flags & FTM_RESP_STAT_ASAP_RESP)) | ||
| stats->asap_num++; | ||
|
|
||
| if (flags & FTM_RESP_STAT_NON_ASAP_RESP) | ||
| stats->non_asap_num++; | ||
|
|
||
| stats->total_duration_ms += le32_to_cpu(resp->duration) / USEC_PER_MSEC; | ||
|
|
||
| if (flags & FTM_RESP_STAT_TRIGGER_UNKNOWN) | ||
| stats->unknown_triggers_num++; | ||
|
|
||
| if (flags & FTM_RESP_STAT_DUP) | ||
| stats->reschedule_requests_num++; | ||
|
|
||
| if (flags & FTM_RESP_STAT_NON_ASAP_OUT_WIN) | ||
| stats->out_of_window_triggers_num++; | ||
| } |
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