/****************************************************************************** * * 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) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH * * 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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * 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 #include #include "iwl-trans.h" #include "mvm.h" #include "fw-api.h" /* * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler * * Copies the phy information in mvm->last_phy_info, it will be used when the * actual data will come from the fw in the next packet. */ void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info)); mvm->ampdu_ref++; #ifdef CONFIG_IWLWIFI_DEBUGFS if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { spin_lock(&mvm->drv_stats_lock); mvm->drv_rx_stats.ampdu_count++; spin_unlock(&mvm->drv_stats_lock); } #endif } /* * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211 * * Adds the rxb to a new skb and give it to mac80211 */ static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, struct ieee80211_sta *sta, struct napi_struct *napi, struct sk_buff *skb, struct ieee80211_hdr *hdr, u16 len, u8 crypt_len, struct iwl_rx_cmd_buffer *rxb) { unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); unsigned int fraglen; /* * The 'hdrlen' (plus the 8 bytes for the SNAP and the crypt_len, * but those are all multiples of 4 long) all goes away, but we * want the *end* of it, which is going to be the start of the IP * header, to be aligned when it gets pulled in. * The beginning of the skb->data is aligned on at least a 4-byte * boundary after allocation. Everything here is aligned at least * on a 2-byte boundary so we can just take hdrlen & 3 and pad by * the result. */ skb_reserve(skb, hdrlen & 3); /* If frame is small enough to fit in skb->head, pull it completely. * If not, only pull ieee80211_hdr (including crypto if present, and * an additional 8 bytes for SNAP/ethertype, see below) so that * splice() or TCP coalesce are more efficient. * * Since, in addition, ieee80211_data_to_8023() always pull in at * least 8 bytes (possibly more for mesh) we can do the same here * to save the cost of doing it later. That still doesn't pull in * the actual IP header since the typical case has a SNAP header. * If the latter changes (there are efforts in the standards group * to do so) we should revisit this and ieee80211_data_to_8023(). */ hdrlen = (len <= skb_tailroom(skb)) ? len : hdrlen + crypt_len + 8; skb_put_data(skb, hdr, hdrlen); fraglen = len - hdrlen; if (fraglen) { int offset = (void *)hdr + hdrlen - rxb_addr(rxb) + rxb_offset(rxb); skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, fraglen, rxb->truesize); } ieee80211_rx_napi(mvm->hw, sta, skb, napi); } /* * iwl_mvm_get_signal_strength - use new rx PHY INFO API * values are reported by the fw as positive values - need to negate * to obtain their dBM. Account for missing antennas by replacing 0 * values by -256dBm: practically 0 power and a non-feasible 8 bit value. */ static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, struct iwl_rx_phy_info *phy_info, struct ieee80211_rx_status *rx_status) { int energy_a, energy_b, energy_c, max_energy; u32 val; val = le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]); energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >> IWL_RX_INFO_ENERGY_ANT_A_POS; energy_a = energy_a ? -energy_a : S8_MIN; energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >> IWL_RX_INFO_ENERGY_ANT_B_POS; energy_b = energy_b ? -energy_b : S8_MIN; energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >> IWL_RX_INFO_ENERGY_ANT_C_POS; energy_c = energy_c ? -energy_c : S8_MIN; max_energy = max(energy_a, energy_b); max_energy = max(max_energy, energy_c); IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n", energy_a, energy_b, energy_c, max_energy); rx_status->signal = max_energy; rx_status->chains = (le16_to_cpu(phy_info->phy_flags) & RX_RES_PHY_FLAGS_ANTENNA) >> RX_RES_PHY_FLAGS_ANTENNA_POS; rx_status->chain_signal[0] = energy_a; rx_status->chain_signal[1] = energy_b; rx_status->chain_signal[2] = energy_c; } /* * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format * @mvm: the mvm object * @hdr: 80211 header * @stats: status in mac80211's format * @rx_pkt_status: status coming from fw * * returns non 0 value if the packet should be dropped */ static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, struct ieee80211_rx_status *stats, u32 rx_pkt_status, u8 *crypt_len) { if (!ieee80211_has_protected(hdr->frame_control) || (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == RX_MPDU_RES_STATUS_SEC_NO_ENC) return 0; /* packet was encrypted with unknown alg */ if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == RX_MPDU_RES_STATUS_SEC_ENC_ERR) return 0; switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) { case RX_MPDU_RES_STATUS_SEC_CCM_ENC: /* alg is CCM: check MIC only */ if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) return -1; stats->flag |= RX_FLAG_DECRYPTED; *crypt_len = IEEE80211_CCMP_HDR_LEN; return 0; case RX_MPDU_RES_STATUS_SEC_TKIP_ENC: /* Don't drop the frame and decrypt it in SW */ if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_DEPRECATE_TTAK) && !(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK)) return 0; *crypt_len = IEEE80211_TKIP_IV_LEN; /* fall through if TTAK OK */ case RX_MPDU_RES_STATUS_SEC_WEP_ENC: if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK)) return -1; stats->flag |= RX_FLAG_DECRYPTED; if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == RX_MPDU_RES_STATUS_SEC_WEP_ENC) *crypt_len = IEEE80211_WEP_IV_LEN; return 0; case RX_MPDU_RES_STATUS_SEC_EXT_ENC: if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) return -1; stats->flag |= RX_FLAG_DECRYPTED; return 0; default: /* Expected in monitor (not having the keys) */ if (!mvm->monitor_on) IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status); } return 0; } static void iwl_mvm_rx_handle_tcm(struct iwl_mvm *mvm, struct ieee80211_sta *sta, struct ieee80211_hdr *hdr, u32 len, struct iwl_rx_phy_info *phy_info, u32 rate_n_flags) { struct iwl_mvm_sta *mvmsta; struct iwl_mvm_tcm_mac *mdata; int mac; int ac = IEEE80211_AC_BE; /* treat non-QoS as BE */ struct iwl_mvm_vif *mvmvif; /* expected throughput in 100Kbps, single stream, 20 MHz */ static const u8 thresh_tpt[] = { 9, 18, 30, 42, 60, 78, 90, 96, 120, 135, }; u16 thr; if (ieee80211_is_data_qos(hdr->frame_control)) ac = tid_to_mac80211_ac[ieee80211_get_tid(hdr)]; mvmsta = iwl_mvm_sta_from_mac80211(sta); mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK; if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD)) schedule_delayed_work(&mvm->tcm.work, 0); mdata = &mvm->tcm.data[mac]; mdata->rx.pkts[ac]++; /* count the airtime only once for each ampdu */ if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) { mdata->rx.last_ampdu_ref = mvm->ampdu_ref; mdata->rx.airtime += le16_to_cpu(phy_info->frame_time); } if (!(rate_n_flags & (RATE_MCS_HT_MSK | RATE_MCS_VHT_MSK))) return; mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); if (mdata->opened_rx_ba_sessions || mdata->uapsd_nonagg_detect.detected || (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) || mvmsta->sta_id != mvmvif->ap_sta_id) return; if (rate_n_flags & RATE_MCS_HT_MSK) { thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK]; thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK) >> RATE_HT_MCS_NSS_POS); } else { if (WARN_ON((rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK) >= ARRAY_SIZE(thresh_tpt))) return; thr = thresh_tpt[rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK]; thr *= 1 + ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> RATE_VHT_MCS_NSS_POS); } thr <<= ((rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) >> RATE_MCS_CHAN_WIDTH_POS); mdata->uapsd_nonagg_detect.rx_bytes += len; ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, thr); } static void iwl_mvm_rx_csum(struct ieee80211_sta *sta, struct sk_buff *skb, u32 status) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); if (mvmvif->features & NETIF_F_RXCSUM && status & RX_MPDU_RES_STATUS_CSUM_DONE && status & RX_MPDU_RES_STATUS_CSUM_OK) skb->ip_summed = CHECKSUM_UNNECESSARY; } /* * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler * * Handles the actual data of the Rx packet from the fw */ void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi, struct iwl_rx_cmd_buffer *rxb) { struct ieee80211_hdr *hdr; struct ieee80211_rx_status *rx_status; struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_rx_phy_info *phy_info; struct iwl_rx_mpdu_res_start *rx_res; struct ieee80211_sta *sta = NULL; struct sk_buff *skb; u32 len; u32 rate_n_flags; u32 rx_pkt_status; u8 crypt_len = 0; bool take_ref; phy_info = &mvm->last_phy_info; rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data; hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res)); len = le16_to_cpu(rx_res->byte_count); rx_pkt_status = le32_to_cpup((__le32 *) (pkt->data + sizeof(*rx_res) + len)); /* Dont use dev_alloc_skb(), we'll have enough headroom once * ieee80211_hdr pulled. */ skb = alloc_skb(128, GFP_ATOMIC); if (!skb) { IWL_ERR(mvm, "alloc_skb failed\n"); return; } rx_status = IEEE80211_SKB_RXCB(skb); /* * drop the packet if it has failed being decrypted by HW */ if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status, &crypt_len)) { IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n", rx_pkt_status); kfree_skb(skb); return; } /* * Keep packets with CRC errors (and with overrun) for monitor mode * (otherwise the firmware discards them) but mark them as bad. */ if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) || !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) { IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status); rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; } /* This will be used in several places later */ rate_n_flags = le32_to_cpu(phy_info->rate_n_flags); /* rx_status carries information about the packet to mac80211 */ rx_status->mactime = le64_to_cpu(phy_info->timestamp); rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp); rx_status->band = (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; rx_status->freq = ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel), rx_status->band); /* TSF as indicated by the firmware is at INA time */ rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; iwl_mvm_get_signal_strength(mvm, phy_info, rx_status); IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal, (unsigned long long)rx_status->mactime); rcu_read_lock(); if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) { u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK; id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT; if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) { sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); if (IS_ERR(sta)) sta = NULL; } } else if (!is_multicast_ether_addr(hdr->addr2)) { /* This is fine since we prevent two stations with the same * address from being added. */ sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); } if (sta) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct ieee80211_vif *tx_blocked_vif = rcu_dereference(mvm->csa_tx_blocked_vif); struct iwl_fw_dbg_trigger_tlv *trig; struct ieee80211_vif *vif = mvmsta->vif; /* We have tx blocked stations (with CS bit). If we heard * frames from a blocked station on a new channel we can * TX to it again. */ if (unlikely(tx_blocked_vif) && vif == tx_blocked_vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); if (mvmvif->csa_target_freq == rx_status->freq) iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false); } rs_update_last_rssi(mvm, mvmsta, rx_status); trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), FW_DBG_TRIGGER_RSSI); if (trig && ieee80211_is_beacon(hdr->frame_control)) { struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; s32 rssi; rssi_trig = (void *)trig->data; rssi = le32_to_cpu(rssi_trig->rssi); if (rx_status->signal < rssi) iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL); } if (!mvm->tcm.paused && len >= sizeof(*hdr) && !is_multicast_ether_addr(hdr->addr1) && ieee80211_is_data(hdr->frame_control)) iwl_mvm_rx_handle_tcm(mvm, sta, hdr, len, phy_info, rate_n_flags); if (ieee80211_is_data(hdr->frame_control)) iwl_mvm_rx_csum(sta, skb, rx_pkt_status); } rcu_read_unlock(); /* set the preamble flag if appropriate */ if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE)) rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE; if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { /* * We know which subframes of an A-MPDU belong * together since we get a single PHY response * from the firmware for all of them */ rx_status->flag |= RX_FLAG_AMPDU_DETAILS; rx_status->ampdu_reference = mvm->ampdu_ref; } /* Set up the HT phy flags */ switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { case RATE_MCS_CHAN_WIDTH_20: break; case RATE_MCS_CHAN_WIDTH_40: rx_status->bw = RATE_INFO_BW_40; break; case RATE_MCS_CHAN_WIDTH_80: rx_status->bw = RATE_INFO_BW_80; break; case RATE_MCS_CHAN_WIDTH_160: rx_status->bw = RATE_INFO_BW_160; break; } if (!(rate_n_flags & RATE_MCS_CCK_MSK) && rate_n_flags & RATE_MCS_SGI_MSK) rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; if (rate_n_flags & RATE_HT_MCS_GF_MSK) rx_status->enc_flags |= RX_ENC_FLAG_HT_GF; if (rate_n_flags & RATE_MCS_LDPC_MSK) rx_status->enc_flags |= RX_ENC_FLAG_LDPC; if (rate_n_flags & RATE_MCS_HT_MSK) { u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS; rx_status->encoding = RX_ENC_HT; rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; } else if (rate_n_flags & RATE_MCS_VHT_MSK) { u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS; rx_status->nss = ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> RATE_VHT_MCS_NSS_POS) + 1; rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; rx_status->encoding = RX_ENC_VHT; rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; if (rate_n_flags & RATE_MCS_BF_MSK) rx_status->enc_flags |= RX_ENC_FLAG_BF; } else { int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, rx_status->band); if (WARN(rate < 0 || rate > 0xFF, "Invalid rate flags 0x%x, band %d,\n", rate_n_flags, rx_status->band)) { kfree_skb(skb); return; } rx_status->rate_idx = rate; } #ifdef CONFIG_IWLWIFI_DEBUGFS iwl_mvm_update_frame_stats(mvm, rate_n_flags, rx_status->flag & RX_FLAG_AMPDU_DETAILS); #endif if (unlikely((ieee80211_is_beacon(hdr->frame_control) || ieee80211_is_probe_resp(hdr->frame_control)) && mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)) mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND; if (unlikely(ieee80211_is_beacon(hdr->frame_control) || ieee80211_is_probe_resp(hdr->frame_control))) rx_status->boottime_ns = ktime_get_boot_ns(); /* Take a reference briefly to kick off a d0i3 entry delay so * we can handle bursts of RX packets without toggling the * state too often. But don't do this for beacons if we are * going to idle because the beacon filtering changes we make * cause the firmware to send us collateral beacons. */ take_ref = !(test_bit(STATUS_TRANS_GOING_IDLE, &mvm->trans->status) && ieee80211_is_beacon(hdr->frame_control)); if (take_ref) iwl_mvm_ref(mvm, IWL_MVM_REF_RX); iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len, crypt_len, rxb); if (take_ref) iwl_mvm_unref(mvm, IWL_MVM_REF_RX); } struct iwl_mvm_stat_data { struct iwl_mvm *mvm; __le32 mac_id; u8 beacon_filter_average_energy; void *general; }; static void iwl_mvm_stat_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) { struct iwl_mvm_stat_data *data = _data; struct iwl_mvm *mvm = data->mvm; int sig = -data->beacon_filter_average_energy; int last_event; int thold = vif->bss_conf.cqm_rssi_thold; int hyst = vif->bss_conf.cqm_rssi_hyst; u16 id = le32_to_cpu(data->mac_id); struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); /* This doesn't need the MAC ID check since it's not taking the * data copied into the "data" struct, but rather the data from * the notification directly. */ if (data->general) { u16 vif_id = mvmvif->id; if (iwl_mvm_is_cdb_supported(mvm)) { struct mvm_statistics_general_cdb *general = data->general; mvmvif->beacon_stats.num_beacons = le32_to_cpu(general->beacon_counter[vif_id]); mvmvif->beacon_stats.avg_signal = -general->beacon_average_energy[vif_id]; } else { struct mvm_statistics_general_v8 *general = data->general; mvmvif->beacon_stats.num_beacons = le32_to_cpu(general->beacon_counter[vif_id]); mvmvif->beacon_stats.avg_signal = -general->beacon_average_energy[vif_id]; } } if (mvmvif->id != id) return; if (vif->type != NL80211_IFTYPE_STATION) return; if (sig == 0) { IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n"); return; } mvmvif->bf_data.ave_beacon_signal = sig; /* BT Coex */ if (mvmvif->bf_data.bt_coex_min_thold != mvmvif->bf_data.bt_coex_max_thold) { last_event = mvmvif->bf_data.last_bt_coex_event; if (sig > mvmvif->bf_data.bt_coex_max_thold && (last_event <= mvmvif->bf_data.bt_coex_min_thold || last_event == 0)) { mvmvif->bf_data.last_bt_coex_event = sig; IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n", sig); iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH); } else if (sig < mvmvif->bf_data.bt_coex_min_thold && (last_event >= mvmvif->bf_data.bt_coex_max_thold || last_event == 0)) { mvmvif->bf_data.last_bt_coex_event = sig; IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n", sig); iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW); } } if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) return; /* CQM Notification */ last_event = mvmvif->bf_data.last_cqm_event; if (thold && sig < thold && (last_event == 0 || sig < last_event - hyst)) { mvmvif->bf_data.last_cqm_event = sig; IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", sig); ieee80211_cqm_rssi_notify( vif, NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, sig, GFP_KERNEL); } else if (sig > thold && (last_event == 0 || sig > last_event + hyst)) { mvmvif->bf_data.last_cqm_event = sig; IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", sig); ieee80211_cqm_rssi_notify( vif, NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, sig, GFP_KERNEL); } } static inline void iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) { struct iwl_fw_dbg_trigger_tlv *trig; struct iwl_fw_dbg_trigger_stats *trig_stats; u32 trig_offset, trig_thold; trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS); if (!trig) return; trig_stats = (void *)trig->data; trig_offset = le32_to_cpu(trig_stats->stop_offset); trig_thold = le32_to_cpu(trig_stats->stop_threshold); if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt))) return; if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold) return; iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL); } void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) { struct iwl_mvm_stat_data data = { .mvm = mvm, }; int expected_size; int i; u8 *energy; __le32 *bytes; __le32 *air_time; __le32 flags; if (!iwl_mvm_has_new_rx_stats_api(mvm)) { if (iwl_mvm_has_new_rx_api(mvm)) expected_size = sizeof(struct iwl_notif_statistics_v11); else expected_size = sizeof(struct iwl_notif_statistics_v10); } else { expected_size = sizeof(struct iwl_notif_statistics_cdb); } if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size, "received invalid statistics size (%d)!\n", iwl_rx_packet_payload_len(pkt))) return; if (!iwl_mvm_has_new_rx_stats_api(mvm)) { struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data; data.mac_id = stats->rx.general.mac_id; data.beacon_filter_average_energy = stats->general.common.beacon_filter_average_energy; mvm->rx_stats_v3 = stats->rx; mvm->radio_stats.rx_time = le64_to_cpu(stats->general.common.rx_time); mvm->radio_stats.tx_time = le64_to_cpu(stats->general.common.tx_time); mvm->radio_stats.on_time_rf = le64_to_cpu(stats->general.common.on_time_rf); mvm->radio_stats.on_time_scan = le64_to_cpu(stats->general.common.on_time_scan); data.general = &stats->general; flags = stats->flag; } else { struct iwl_notif_statistics_cdb *stats = (void *)&pkt->data; data.mac_id = stats->rx.general.mac_id; data.beacon_filter_average_energy = stats->general.common.beacon_filter_average_energy; mvm->rx_stats = stats->rx; mvm->radio_stats.rx_time = le64_to_cpu(stats->general.common.rx_time); mvm->radio_stats.tx_time = le64_to_cpu(stats->general.common.tx_time); mvm->radio_stats.on_time_rf = le64_to_cpu(stats->general.common.on_time_rf); mvm->radio_stats.on_time_scan = le64_to_cpu(stats->general.common.on_time_scan); data.general = &stats->general; flags = stats->flag; } iwl_mvm_rx_stats_check_trigger(mvm, pkt); ieee80211_iterate_active_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_stat_iterator, &data); if (!iwl_mvm_has_new_rx_api(mvm)) return; if (!iwl_mvm_has_new_rx_stats_api(mvm)) { struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data; energy = (void *)&v11->load_stats.avg_energy; bytes = (void *)&v11->load_stats.byte_count; air_time = (void *)&v11->load_stats.air_time; } else { struct iwl_notif_statistics_cdb *stats = (void *)&pkt->data; energy = (void *)&stats->load_stats.avg_energy; bytes = (void *)&stats->load_stats.byte_count; air_time = (void *)&stats->load_stats.air_time; } rcu_read_lock(); for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { struct iwl_mvm_sta *sta; if (!energy[i]) continue; sta = iwl_mvm_sta_from_staid_rcu(mvm, i); if (!sta) continue; sta->avg_energy = energy[i]; } rcu_read_unlock(); /* * Don't update in case the statistics are not cleared, since * we will end up counting twice the same airtime, once in TCM * request and once in statistics notification. */ if (!(le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)) return; spin_lock(&mvm->tcm.lock); for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) { struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i]; u32 airtime = le32_to_cpu(air_time[i]); u32 rx_bytes = le32_to_cpu(bytes[i]); mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes; if (airtime) { /* re-init every time to store rate from FW */ ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, rx_bytes * 8 / airtime); } mdata->rx.airtime += airtime; } spin_unlock(&mvm->tcm.lock); } void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) { iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb)); } void iwl_mvm_window_status_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_ba_window_status_notif *notif = (void *)pkt->data; int i; u32 pkt_len = iwl_rx_packet_payload_len(pkt); if (WARN_ONCE(pkt_len != sizeof(*notif), "Received window status notification of wrong size (%u)\n", pkt_len)) return; rcu_read_lock(); for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) { struct ieee80211_sta *sta; u8 sta_id, tid; u64 bitmap; u32 ssn; u16 ratid; u16 received_mpdu; ratid = le16_to_cpu(notif->ra_tid[i]); /* check that this TID is valid */ if (!(ratid & BA_WINDOW_STATUS_VALID_MSK)) continue; received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]); if (received_mpdu == 0) continue; tid = ratid & BA_WINDOW_STATUS_TID_MSK; /* get the station */ sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK) >> BA_WINDOW_STATUS_STA_ID_POS; sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); if (IS_ERR_OR_NULL(sta)) continue; bitmap = le64_to_cpu(notif->bitmap[i]); ssn = le32_to_cpu(notif->start_seq_num[i]); /* update mac80211 with the bitmap for the reordering buffer */ ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap, received_mpdu); } rcu_read_unlock(); }