| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright 2002-2005, Instant802 Networks, Inc. |
| * Copyright 2005-2006, Devicescape Software, Inc. |
| * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
| * Copyright 2008-2010 Johannes Berg <johannes@sipsolutions.net> |
| * Copyright 2013-2014 Intel Mobile Communications GmbH |
| * Copyright 2021-2023 Intel Corporation |
| */ |
| |
| #include <linux/export.h> |
| #include <linux/etherdevice.h> |
| #include <net/mac80211.h> |
| #include <asm/unaligned.h> |
| #include "ieee80211_i.h" |
| #include "rate.h" |
| #include "mesh.h" |
| #include "led.h" |
| #include "wme.h" |
| |
| |
| void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
| struct sk_buff *skb) |
| { |
| struct ieee80211_local *local = hw_to_local(hw); |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| int tmp; |
| |
| skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
| skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
| &local->skb_queue : &local->skb_queue_unreliable, skb); |
| tmp = skb_queue_len(&local->skb_queue) + |
| skb_queue_len(&local->skb_queue_unreliable); |
| while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && |
| (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
| ieee80211_free_txskb(hw, skb); |
| tmp--; |
| I802_DEBUG_INC(local->tx_status_drop); |
| } |
| tasklet_schedule(&local->tasklet); |
| } |
| EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); |
| |
| static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
| struct sta_info *sta, |
| struct sk_buff *skb) |
| { |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| struct ieee80211_hdr *hdr = (void *)skb->data; |
| int ac; |
| |
| if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER | |
| IEEE80211_TX_CTL_AMPDU | |
| IEEE80211_TX_CTL_HW_80211_ENCAP)) { |
| ieee80211_free_txskb(&local->hw, skb); |
| return; |
| } |
| |
| /* |
| * This skb 'survived' a round-trip through the driver, and |
| * hopefully the driver didn't mangle it too badly. However, |
| * we can definitely not rely on the control information |
| * being correct. Clear it so we don't get junk there, and |
| * indicate that it needs new processing, but must not be |
| * modified/encrypted again. |
| */ |
| memset(&info->control, 0, sizeof(info->control)); |
| |
| info->control.jiffies = jiffies; |
| info->control.vif = &sta->sdata->vif; |
| info->control.flags |= IEEE80211_TX_INTCFL_NEED_TXPROCESSING; |
| info->flags |= IEEE80211_TX_INTFL_RETRANSMISSION; |
| info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS; |
| |
| sta->deflink.status_stats.filtered++; |
| |
| /* |
| * Clear more-data bit on filtered frames, it might be set |
| * but later frames might time out so it might have to be |
| * clear again ... It's all rather unlikely (this frame |
| * should time out first, right?) but let's not confuse |
| * peers unnecessarily. |
| */ |
| if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) |
| hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
| |
| if (ieee80211_is_data_qos(hdr->frame_control)) { |
| u8 *p = ieee80211_get_qos_ctl(hdr); |
| int tid = *p & IEEE80211_QOS_CTL_TID_MASK; |
| |
| /* |
| * Clear EOSP if set, this could happen e.g. |
| * if an absence period (us being a P2P GO) |
| * shortens the SP. |
| */ |
| if (*p & IEEE80211_QOS_CTL_EOSP) |
| *p &= ~IEEE80211_QOS_CTL_EOSP; |
| ac = ieee80211_ac_from_tid(tid); |
| } else { |
| ac = IEEE80211_AC_BE; |
| } |
| |
| /* |
| * Clear the TX filter mask for this STA when sending the next |
| * packet. If the STA went to power save mode, this will happen |
| * when it wakes up for the next time. |
| */ |
| set_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT); |
| ieee80211_clear_fast_xmit(sta); |
| |
| /* |
| * This code races in the following way: |
| * |
| * (1) STA sends frame indicating it will go to sleep and does so |
| * (2) hardware/firmware adds STA to filter list, passes frame up |
| * (3) hardware/firmware processes TX fifo and suppresses a frame |
| * (4) we get TX status before having processed the frame and |
| * knowing that the STA has gone to sleep. |
| * |
| * This is actually quite unlikely even when both those events are |
| * processed from interrupts coming in quickly after one another or |
| * even at the same time because we queue both TX status events and |
| * RX frames to be processed by a tasklet and process them in the |
| * same order that they were received or TX status last. Hence, there |
| * is no race as long as the frame RX is processed before the next TX |
| * status, which drivers can ensure, see below. |
| * |
| * Note that this can only happen if the hardware or firmware can |
| * actually add STAs to the filter list, if this is done by the |
| * driver in response to set_tim() (which will only reduce the race |
| * this whole filtering tries to solve, not completely solve it) |
| * this situation cannot happen. |
| * |
| * To completely solve this race drivers need to make sure that they |
| * (a) don't mix the irq-safe/not irq-safe TX status/RX processing |
| * functions and |
| * (b) always process RX events before TX status events if ordering |
| * can be unknown, for example with different interrupt status |
| * bits. |
| * (c) if PS mode transitions are manual (i.e. the flag |
| * %IEEE80211_HW_AP_LINK_PS is set), always process PS state |
| * changes before calling TX status events if ordering can be |
| * unknown. |
| */ |
| if (test_sta_flag(sta, WLAN_STA_PS_STA) && |
| skb_queue_len(&sta->tx_filtered[ac]) < STA_MAX_TX_BUFFER) { |
| skb_queue_tail(&sta->tx_filtered[ac], skb); |
| sta_info_recalc_tim(sta); |
| |
| if (!timer_pending(&local->sta_cleanup)) |
| mod_timer(&local->sta_cleanup, |
| round_jiffies(jiffies + |
| STA_INFO_CLEANUP_INTERVAL)); |
| return; |
| } |
| |
| if (!test_sta_flag(sta, WLAN_STA_PS_STA) && |
| !(info->flags & IEEE80211_TX_INTFL_RETRIED)) { |
| /* Software retry the packet once */ |
| info->flags |= IEEE80211_TX_INTFL_RETRIED; |
| ieee80211_add_pending_skb(local, skb); |
| return; |
| } |
| |
| ps_dbg_ratelimited(sta->sdata, |
| "dropped TX filtered frame, queue_len=%d PS=%d @%lu\n", |
| skb_queue_len(&sta->tx_filtered[ac]), |
| !!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies); |
| ieee80211_free_txskb(&local->hw, skb); |
| } |
| |
| static void ieee80211_check_pending_bar(struct sta_info *sta, u8 *addr, u8 tid) |
| { |
| struct tid_ampdu_tx *tid_tx; |
| |
| tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); |
| if (!tid_tx || !tid_tx->bar_pending) |
| return; |
| |
| tid_tx->bar_pending = false; |
| ieee80211_send_bar(&sta->sdata->vif, addr, tid, tid_tx->failed_bar_ssn); |
| } |
| |
| static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb) |
| { |
| struct ieee80211_mgmt *mgmt = (void *) skb->data; |
| struct ieee80211_local *local = sta->local; |
| struct ieee80211_sub_if_data *sdata = sta->sdata; |
| |
| if (ieee80211_is_data_qos(mgmt->frame_control)) { |
| struct ieee80211_hdr *hdr = (void *) skb->data; |
| u8 *qc = ieee80211_get_qos_ctl(hdr); |
| u16 tid = qc[0] & 0xf; |
| |
| ieee80211_check_pending_bar(sta, hdr->addr1, tid); |
| } |
| |
| if (ieee80211_is_action(mgmt->frame_control) && |
| !ieee80211_has_protected(mgmt->frame_control) && |
| mgmt->u.action.category == WLAN_CATEGORY_HT && |
| mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS && |
| ieee80211_sdata_running(sdata)) { |
| enum ieee80211_smps_mode smps_mode; |
| |
| switch (mgmt->u.action.u.ht_smps.smps_control) { |
| case WLAN_HT_SMPS_CONTROL_DYNAMIC: |
| smps_mode = IEEE80211_SMPS_DYNAMIC; |
| break; |
| case WLAN_HT_SMPS_CONTROL_STATIC: |
| smps_mode = IEEE80211_SMPS_STATIC; |
| break; |
| case WLAN_HT_SMPS_CONTROL_DISABLED: |
| default: /* shouldn't happen since we don't send that */ |
| smps_mode = IEEE80211_SMPS_OFF; |
| break; |
| } |
| |
| if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
| /* |
| * This update looks racy, but isn't -- if we come |
| * here we've definitely got a station that we're |
| * talking to, and on a managed interface that can |
| * only be the AP. And the only other place updating |
| * this variable in managed mode is before association. |
| */ |
| sdata->deflink.smps_mode = smps_mode; |
| ieee80211_queue_work(&local->hw, &sdata->recalc_smps); |
| } |
| } |
| } |
| |
| static void ieee80211_set_bar_pending(struct sta_info *sta, u8 tid, u16 ssn) |
| { |
| struct tid_ampdu_tx *tid_tx; |
| |
| tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); |
| if (!tid_tx) |
| return; |
| |
| tid_tx->failed_bar_ssn = ssn; |
| tid_tx->bar_pending = true; |
| } |
| |
| static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info, |
| struct ieee80211_tx_status *status) |
| { |
| struct ieee80211_rate_status *status_rate = NULL; |
| int len = sizeof(struct ieee80211_radiotap_header); |
| |
| if (status && status->n_rates) |
| status_rate = &status->rates[status->n_rates - 1]; |
| |
| /* IEEE80211_RADIOTAP_RATE rate */ |
| if (status_rate && !(status_rate->rate_idx.flags & |
| (RATE_INFO_FLAGS_MCS | |
| RATE_INFO_FLAGS_DMG | |
| RATE_INFO_FLAGS_EDMG | |
| RATE_INFO_FLAGS_VHT_MCS | |
| RATE_INFO_FLAGS_HE_MCS))) |
| len += 2; |
| else if (info->status.rates[0].idx >= 0 && |
| !(info->status.rates[0].flags & |
| (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))) |
| len += 2; |
| |
| /* IEEE80211_RADIOTAP_TX_FLAGS */ |
| len += 2; |
| |
| /* IEEE80211_RADIOTAP_DATA_RETRIES */ |
| len += 1; |
| |
| /* IEEE80211_RADIOTAP_MCS |
| * IEEE80211_RADIOTAP_VHT */ |
| if (status_rate) { |
| if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_MCS) |
| len += 3; |
| else if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_VHT_MCS) |
| len = ALIGN(len, 2) + 12; |
| else if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_HE_MCS) |
| len = ALIGN(len, 2) + 12; |
| } else if (info->status.rates[0].idx >= 0) { |
| if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) |
| len += 3; |
| else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) |
| len = ALIGN(len, 2) + 12; |
| } |
| |
| return len; |
| } |
| |
| static void |
| ieee80211_add_tx_radiotap_header(struct ieee80211_local *local, |
| struct sk_buff *skb, int retry_count, |
| int rtap_len, int shift, |
| struct ieee80211_tx_status *status) |
| { |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| struct ieee80211_radiotap_header *rthdr; |
| struct ieee80211_rate_status *status_rate = NULL; |
| unsigned char *pos; |
| u16 legacy_rate = 0; |
| u16 txflags; |
| |
| if (status && status->n_rates) |
| status_rate = &status->rates[status->n_rates - 1]; |
| |
| rthdr = skb_push(skb, rtap_len); |
| |
| memset(rthdr, 0, rtap_len); |
| rthdr->it_len = cpu_to_le16(rtap_len); |
| rthdr->it_present = |
| cpu_to_le32(BIT(IEEE80211_RADIOTAP_TX_FLAGS) | |
| BIT(IEEE80211_RADIOTAP_DATA_RETRIES)); |
| pos = (unsigned char *)(rthdr + 1); |
| |
| /* |
| * XXX: Once radiotap gets the bitmap reset thing the vendor |
| * extensions proposal contains, we can actually report |
| * the whole set of tries we did. |
| */ |
| |
| /* IEEE80211_RADIOTAP_RATE */ |
| |
| if (status_rate) { |
| if (!(status_rate->rate_idx.flags & |
| (RATE_INFO_FLAGS_MCS | |
| RATE_INFO_FLAGS_DMG | |
| RATE_INFO_FLAGS_EDMG | |
| RATE_INFO_FLAGS_VHT_MCS | |
| RATE_INFO_FLAGS_HE_MCS))) |
| legacy_rate = status_rate->rate_idx.legacy; |
| } else if (info->status.rates[0].idx >= 0 && |
| !(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS | |
| IEEE80211_TX_RC_VHT_MCS))) { |
| struct ieee80211_supported_band *sband; |
| |
| sband = local->hw.wiphy->bands[info->band]; |
| legacy_rate = |
| sband->bitrates[info->status.rates[0].idx].bitrate; |
| } |
| |
| if (legacy_rate) { |
| rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_RATE)); |
| *pos = DIV_ROUND_UP(legacy_rate, 5 * (1 << shift)); |
| /* padding for tx flags */ |
| pos += 2; |
| } |
| |
| /* IEEE80211_RADIOTAP_TX_FLAGS */ |
| txflags = 0; |
| if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
| !is_multicast_ether_addr(hdr->addr1)) |
| txflags |= IEEE80211_RADIOTAP_F_TX_FAIL; |
| |
| if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
| txflags |= IEEE80211_RADIOTAP_F_TX_CTS; |
| if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
| txflags |= IEEE80211_RADIOTAP_F_TX_RTS; |
| |
| put_unaligned_le16(txflags, pos); |
| pos += 2; |
| |
| /* IEEE80211_RADIOTAP_DATA_RETRIES */ |
| /* for now report the total retry_count */ |
| *pos = retry_count; |
| pos++; |
| |
| if (status_rate && (status_rate->rate_idx.flags & RATE_INFO_FLAGS_MCS)) |
| { |
| rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_MCS)); |
| pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
| IEEE80211_RADIOTAP_MCS_HAVE_GI | |
| IEEE80211_RADIOTAP_MCS_HAVE_BW; |
| if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_SHORT_GI) |
| pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; |
| if (status_rate->rate_idx.bw == RATE_INFO_BW_40) |
| pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; |
| pos[2] = status_rate->rate_idx.mcs; |
| pos += 3; |
| } else if (status_rate && (status_rate->rate_idx.flags & |
| RATE_INFO_FLAGS_VHT_MCS)) |
| { |
| u16 known = local->hw.radiotap_vht_details & |
| (IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
| IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); |
| |
| rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_VHT)); |
| |
| /* required alignment from rthdr */ |
| pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); |
| |
| /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ |
| put_unaligned_le16(known, pos); |
| pos += 2; |
| |
| /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ |
| if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_SHORT_GI) |
| *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; |
| pos++; |
| |
| /* u8 bandwidth */ |
| switch (status_rate->rate_idx.bw) { |
| case RATE_INFO_BW_160: |
| *pos = 11; |
| break; |
| case RATE_INFO_BW_80: |
| *pos = 4; |
| break; |
| case RATE_INFO_BW_40: |
| *pos = 1; |
| break; |
| default: |
| *pos = 0; |
| break; |
| } |
| pos++; |
| |
| /* u8 mcs_nss[4] */ |
| *pos = (status_rate->rate_idx.mcs << 4) | |
| status_rate->rate_idx.nss; |
| pos += 4; |
| |
| /* u8 coding */ |
| pos++; |
| /* u8 group_id */ |
| pos++; |
| /* u16 partial_aid */ |
| pos += 2; |
| } else if (status_rate && (status_rate->rate_idx.flags & |
| RATE_INFO_FLAGS_HE_MCS)) |
| { |
| struct ieee80211_radiotap_he *he; |
| |
| rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_HE)); |
| |
| /* required alignment from rthdr */ |
| pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); |
| he = (struct ieee80211_radiotap_he *)pos; |
| |
| he->data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_SU | |
| IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN | |
| IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN | |
| IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); |
| |
| he->data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN); |
| |
| #define HE_PREP(f, val) le16_encode_bits(val, IEEE80211_RADIOTAP_HE_##f) |
| |
| he->data6 |= HE_PREP(DATA6_NSTS, status_rate->rate_idx.nss); |
| |
| #define CHECK_GI(s) \ |
| BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_GI_##s != \ |
| (int)NL80211_RATE_INFO_HE_GI_##s) |
| |
| CHECK_GI(0_8); |
| CHECK_GI(1_6); |
| CHECK_GI(3_2); |
| |
| he->data3 |= HE_PREP(DATA3_DATA_MCS, status_rate->rate_idx.mcs); |
| he->data3 |= HE_PREP(DATA3_DATA_DCM, status_rate->rate_idx.he_dcm); |
| |
| he->data5 |= HE_PREP(DATA5_GI, status_rate->rate_idx.he_gi); |
| |
| switch (status_rate->rate_idx.bw) { |
| case RATE_INFO_BW_20: |
| he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, |
| IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_20MHZ); |
| break; |
| case RATE_INFO_BW_40: |
| he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, |
| IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_40MHZ); |
| break; |
| case RATE_INFO_BW_80: |
| he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, |
| IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_80MHZ); |
| break; |
| case RATE_INFO_BW_160: |
| he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, |
| IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_160MHZ); |
| break; |
| case RATE_INFO_BW_HE_RU: |
| #define CHECK_RU_ALLOC(s) \ |
| BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_##s##T != \ |
| NL80211_RATE_INFO_HE_RU_ALLOC_##s + 4) |
| |
| CHECK_RU_ALLOC(26); |
| CHECK_RU_ALLOC(52); |
| CHECK_RU_ALLOC(106); |
| CHECK_RU_ALLOC(242); |
| CHECK_RU_ALLOC(484); |
| CHECK_RU_ALLOC(996); |
| CHECK_RU_ALLOC(2x996); |
| |
| he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, |
| status_rate->rate_idx.he_ru_alloc + 4); |
| break; |
| default: |
| WARN_ONCE(1, "Invalid SU BW %d\n", status_rate->rate_idx.bw); |
| } |
| |
| pos += sizeof(struct ieee80211_radiotap_he); |
| } |
| |
| if (status_rate || info->status.rates[0].idx < 0) |
| return; |
| |
| /* IEEE80211_RADIOTAP_MCS |
| * IEEE80211_RADIOTAP_VHT */ |
| if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) { |
| rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_MCS)); |
| pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
| IEEE80211_RADIOTAP_MCS_HAVE_GI | |
| IEEE80211_RADIOTAP_MCS_HAVE_BW; |
| if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) |
| pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; |
| if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) |
| pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; |
| if (info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD) |
| pos[1] |= IEEE80211_RADIOTAP_MCS_FMT_GF; |
| pos[2] = info->status.rates[0].idx; |
| pos += 3; |
| } else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) { |
| u16 known = local->hw.radiotap_vht_details & |
| (IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
| IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); |
| |
| rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_VHT)); |
| |
| /* required alignment from rthdr */ |
| pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); |
| |
| /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ |
| put_unaligned_le16(known, pos); |
| pos += 2; |
| |
| /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ |
| if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) |
| *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; |
| pos++; |
| |
| /* u8 bandwidth */ |
| if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) |
| *pos = 1; |
| else if (info->status.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH) |
| *pos = 4; |
| else if (info->status.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH) |
| *pos = 11; |
| else /* IEEE80211_TX_RC_{20_MHZ_WIDTH,FIXME:DUP_DATA} */ |
| *pos = 0; |
| pos++; |
| |
| /* u8 mcs_nss[4] */ |
| *pos = (ieee80211_rate_get_vht_mcs(&info->status.rates[0]) << 4) | |
| ieee80211_rate_get_vht_nss(&info->status.rates[0]); |
| pos += 4; |
| |
| /* u8 coding */ |
| pos++; |
| /* u8 group_id */ |
| pos++; |
| /* u16 partial_aid */ |
| pos += 2; |
| } |
| } |
| |
| /* |
| * Handles the tx for TDLS teardown frames. |
| * If the frame wasn't ACKed by the peer - it will be re-sent through the AP |
| */ |
| static void ieee80211_tdls_td_tx_handle(struct ieee80211_local *local, |
| struct ieee80211_sub_if_data *sdata, |
| struct sk_buff *skb, u32 flags) |
| { |
| struct sk_buff *teardown_skb; |
| struct sk_buff *orig_teardown_skb; |
| bool is_teardown = false; |
| |
| /* Get the teardown data we need and free the lock */ |
| spin_lock(&sdata->u.mgd.teardown_lock); |
| teardown_skb = sdata->u.mgd.teardown_skb; |
| orig_teardown_skb = sdata->u.mgd.orig_teardown_skb; |
| if ((skb == orig_teardown_skb) && teardown_skb) { |
| sdata->u.mgd.teardown_skb = NULL; |
| sdata->u.mgd.orig_teardown_skb = NULL; |
| is_teardown = true; |
| } |
| spin_unlock(&sdata->u.mgd.teardown_lock); |
| |
| if (is_teardown) { |
| /* This mechanism relies on being able to get ACKs */ |
| WARN_ON(!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)); |
| |
| /* Check if peer has ACKed */ |
| if (flags & IEEE80211_TX_STAT_ACK) { |
| dev_kfree_skb_any(teardown_skb); |
| } else { |
| tdls_dbg(sdata, |
| "TDLS Resending teardown through AP\n"); |
| |
| ieee80211_subif_start_xmit(teardown_skb, skb->dev); |
| } |
| } |
| } |
| |
| static struct ieee80211_sub_if_data * |
| ieee80211_sdata_from_skb(struct ieee80211_local *local, struct sk_buff *skb) |
| { |
| struct ieee80211_sub_if_data *sdata; |
| |
| if (skb->dev) { |
| list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
| if (!sdata->dev) |
| continue; |
| |
| if (skb->dev == sdata->dev) |
| return sdata; |
| } |
| |
| return NULL; |
| } |
| |
| return rcu_dereference(local->p2p_sdata); |
| } |
| |
| static void ieee80211_report_ack_skb(struct ieee80211_local *local, |
| struct sk_buff *orig_skb, |
| bool acked, bool dropped, |
| ktime_t ack_hwtstamp) |
| { |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(orig_skb); |
| struct sk_buff *skb; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&local->ack_status_lock, flags); |
| skb = idr_remove(&local->ack_status_frames, info->ack_frame_id); |
| spin_unlock_irqrestore(&local->ack_status_lock, flags); |
| |
| if (!skb) |
| return; |
| |
| if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) { |
| u64 cookie = IEEE80211_SKB_CB(skb)->ack.cookie; |
| struct ieee80211_sub_if_data *sdata; |
| struct ieee80211_hdr *hdr = (void *)skb->data; |
| bool is_valid_ack_signal = |
| !!(info->status.flags & IEEE80211_TX_STATUS_ACK_SIGNAL_VALID); |
| struct cfg80211_tx_status status = { |
| .cookie = cookie, |
| .buf = skb->data, |
| .len = skb->len, |
| .ack = acked, |
| }; |
| |
| if (ieee80211_is_timing_measurement(orig_skb) || |
| ieee80211_is_ftm(orig_skb)) { |
| status.tx_tstamp = |
| ktime_to_ns(skb_hwtstamps(orig_skb)->hwtstamp); |
| status.ack_tstamp = ktime_to_ns(ack_hwtstamp); |
| } |
| |
| rcu_read_lock(); |
| sdata = ieee80211_sdata_from_skb(local, skb); |
| if (sdata) { |
| if (skb->protocol == sdata->control_port_protocol || |
| skb->protocol == cpu_to_be16(ETH_P_PREAUTH)) |
| cfg80211_control_port_tx_status(&sdata->wdev, |
| cookie, |
| skb->data, |
| skb->len, |
| acked, |
| GFP_ATOMIC); |
| else if (ieee80211_is_any_nullfunc(hdr->frame_control)) |
| cfg80211_probe_status(sdata->dev, hdr->addr1, |
| cookie, acked, |
| info->status.ack_signal, |
| is_valid_ack_signal, |
| GFP_ATOMIC); |
| else if (ieee80211_is_mgmt(hdr->frame_control)) |
| cfg80211_mgmt_tx_status_ext(&sdata->wdev, |
| &status, |
| GFP_ATOMIC); |
| else |
| pr_warn("Unknown status report in ack skb\n"); |
| |
| } |
| rcu_read_unlock(); |
| |
| dev_kfree_skb_any(skb); |
| } else if (dropped) { |
| dev_kfree_skb_any(skb); |
| } else { |
| /* consumes skb */ |
| skb_complete_wifi_ack(skb, acked); |
| } |
| } |
| |
| static void ieee80211_report_used_skb(struct ieee80211_local *local, |
| struct sk_buff *skb, bool dropped, |
| ktime_t ack_hwtstamp) |
| { |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| u16 tx_time_est = ieee80211_info_get_tx_time_est(info); |
| struct ieee80211_hdr *hdr = (void *)skb->data; |
| bool acked = info->flags & IEEE80211_TX_STAT_ACK; |
| |
| if (dropped) |
| acked = false; |
| |
| if (tx_time_est) { |
| struct sta_info *sta; |
| |
| rcu_read_lock(); |
| |
| sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2); |
| ieee80211_sta_update_pending_airtime(local, sta, |
| skb_get_queue_mapping(skb), |
| tx_time_est, |
| true); |
| rcu_read_unlock(); |
| } |
| |
| if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) { |
| struct ieee80211_sub_if_data *sdata; |
| |
| rcu_read_lock(); |
| |
| sdata = ieee80211_sdata_from_skb(local, skb); |
| |
| if (!sdata) { |
| skb->dev = NULL; |
| } else if (!dropped) { |
| unsigned int hdr_size = |
| ieee80211_hdrlen(hdr->frame_control); |
| |
| /* Check to see if packet is a TDLS teardown packet */ |
| if (ieee80211_is_data(hdr->frame_control) && |
| (ieee80211_get_tdls_action(skb, hdr_size) == |
| WLAN_TDLS_TEARDOWN)) { |
| ieee80211_tdls_td_tx_handle(local, sdata, skb, |
| info->flags); |
| } else if (ieee80211_s1g_is_twt_setup(skb)) { |
| if (!acked) { |
| struct sk_buff *qskb; |
| |
| qskb = skb_clone(skb, GFP_ATOMIC); |
| if (qskb) { |
| skb_queue_tail(&sdata->status_queue, |
| qskb); |
| wiphy_work_queue(local->hw.wiphy, |
| &sdata->work); |
| } |
| } |
| } else { |
| ieee80211_mgd_conn_tx_status(sdata, |
| hdr->frame_control, |
| acked); |
| } |
| } |
| |
| rcu_read_unlock(); |
| } else if (info->ack_frame_id) { |
| ieee80211_report_ack_skb(local, skb, acked, dropped, |
| ack_hwtstamp); |
| } |
| |
| if (!dropped && skb->destructor) { |
| skb->wifi_acked_valid = 1; |
| skb->wifi_acked = acked; |
| } |
| |
| ieee80211_led_tx(local); |
| |
| if (skb_has_frag_list(skb)) { |
| kfree_skb_list(skb_shinfo(skb)->frag_list); |
| skb_shinfo(skb)->frag_list = NULL; |
| } |
| } |
| |
| /* |
| * Use a static threshold for now, best value to be determined |
| * by testing ... |
| * Should it depend on: |
| * - on # of retransmissions |
| * - current throughput (higher value for higher tpt)? |
| */ |
| #define STA_LOST_PKT_THRESHOLD 50 |
| #define STA_LOST_PKT_TIME HZ /* 1 sec since last ACK */ |
| #define STA_LOST_TDLS_PKT_TIME (10*HZ) /* 10secs since last ACK */ |
| |
| static void ieee80211_lost_packet(struct sta_info *sta, |
| struct ieee80211_tx_info *info) |
| { |
| unsigned long pkt_time = STA_LOST_PKT_TIME; |
| unsigned int pkt_thr = STA_LOST_PKT_THRESHOLD; |
| |
| /* If driver relies on its own algorithm for station kickout, skip |
| * mac80211 packet loss mechanism. |
| */ |
| if (ieee80211_hw_check(&sta->local->hw, REPORTS_LOW_ACK)) |
| return; |
| |
| /* This packet was aggregated but doesn't carry status info */ |
| if ((info->flags & IEEE80211_TX_CTL_AMPDU) && |
| !(info->flags & IEEE80211_TX_STAT_AMPDU)) |
| return; |
| |
| sta->deflink.status_stats.lost_packets++; |
| if (sta->sta.tdls) { |
| pkt_time = STA_LOST_TDLS_PKT_TIME; |
| pkt_thr = STA_LOST_PKT_THRESHOLD; |
| } |
| |
| /* |
| * If we're in TDLS mode, make sure that all STA_LOST_PKT_THRESHOLD |
| * of the last packets were lost, and that no ACK was received in the |
| * last STA_LOST_TDLS_PKT_TIME ms, before triggering the CQM packet-loss |
| * mechanism. |
| * For non-TDLS, use STA_LOST_PKT_THRESHOLD and STA_LOST_PKT_TIME |
| */ |
| if (sta->deflink.status_stats.lost_packets < pkt_thr || |
| !time_after(jiffies, sta->deflink.status_stats.last_pkt_time + pkt_time)) |
| return; |
| |
| cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, |
| sta->deflink.status_stats.lost_packets, |
| GFP_ATOMIC); |
| sta->deflink.status_stats.lost_packets = 0; |
| } |
| |
| static int ieee80211_tx_get_rates(struct ieee80211_hw *hw, |
| struct ieee80211_tx_info *info, |
| int *retry_count) |
| { |
| int count = -1; |
| int i; |
| |
| for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { |
| if ((info->flags & IEEE80211_TX_CTL_AMPDU) && |
| !(info->flags & IEEE80211_TX_STAT_AMPDU)) { |
| /* just the first aggr frame carry status info */ |
| info->status.rates[i].idx = -1; |
| info->status.rates[i].count = 0; |
| break; |
| } else if (info->status.rates[i].idx < 0) { |
| break; |
| } else if (i >= hw->max_report_rates) { |
| /* the HW cannot have attempted that rate */ |
| info->status.rates[i].idx = -1; |
| info->status.rates[i].count = 0; |
| break; |
| } |
| |
| count += info->status.rates[i].count; |
| } |
| |
| if (count < 0) |
| count = 0; |
| |
| *retry_count = count; |
| return i - 1; |
| } |
| |
| void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, |
| int retry_count, int shift, bool send_to_cooked, |
| struct ieee80211_tx_status *status) |
| { |
| struct sk_buff *skb2; |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| struct ieee80211_sub_if_data *sdata; |
| struct net_device *prev_dev = NULL; |
| int rtap_len; |
| |
| /* send frame to monitor interfaces now */ |
| rtap_len = ieee80211_tx_radiotap_len(info, status); |
| if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) { |
| pr_err("ieee80211_tx_status: headroom too small\n"); |
| dev_kfree_skb(skb); |
| return; |
| } |
| ieee80211_add_tx_radiotap_header(local, skb, retry_count, |
| rtap_len, shift, status); |
| |
| /* XXX: is this sufficient for BPF? */ |
| skb_reset_mac_header(skb); |
| skb->ip_summed = CHECKSUM_UNNECESSARY; |
| skb->pkt_type = PACKET_OTHERHOST; |
| skb->protocol = htons(ETH_P_802_2); |
| memset(skb->cb, 0, sizeof(skb->cb)); |
| |
| rcu_read_lock(); |
| list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
| if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
| if (!ieee80211_sdata_running(sdata)) |
| continue; |
| |
| if ((sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) && |
| !send_to_cooked) |
| continue; |
| |
| if (prev_dev) { |
| skb2 = skb_clone(skb, GFP_ATOMIC); |
| if (skb2) { |
| skb2->dev = prev_dev; |
| netif_rx(skb2); |
| } |
| } |
| |
| prev_dev = sdata->dev; |
| } |
| } |
| if (prev_dev) { |
| skb->dev = prev_dev; |
| netif_rx(skb); |
| skb = NULL; |
| } |
| rcu_read_unlock(); |
| dev_kfree_skb(skb); |
| } |
| |
| static void __ieee80211_tx_status(struct ieee80211_hw *hw, |
| struct ieee80211_tx_status *status, |
| int rates_idx, int retry_count) |
| { |
| struct sk_buff *skb = status->skb; |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| struct ieee80211_local *local = hw_to_local(hw); |
| struct ieee80211_tx_info *info = status->info; |
| struct sta_info *sta; |
| __le16 fc; |
| bool send_to_cooked; |
| bool acked; |
| bool noack_success; |
| struct ieee80211_bar *bar; |
| int shift = 0; |
| int tid = IEEE80211_NUM_TIDS; |
| |
| fc = hdr->frame_control; |
| |
| if (status->sta) { |
| sta = container_of(status->sta, struct sta_info, sta); |
| shift = ieee80211_vif_get_shift(&sta->sdata->vif); |
| |
| if (info->flags & IEEE80211_TX_STATUS_EOSP) |
| clear_sta_flag(sta, WLAN_STA_SP); |
| |
| acked = !!(info->flags & IEEE80211_TX_STAT_ACK); |
| noack_success = !!(info->flags & |
| IEEE80211_TX_STAT_NOACK_TRANSMITTED); |
| |
| /* mesh Peer Service Period support */ |
| if (ieee80211_vif_is_mesh(&sta->sdata->vif) && |
| ieee80211_is_data_qos(fc)) |
| ieee80211_mpsp_trigger_process( |
| ieee80211_get_qos_ctl(hdr), sta, true, acked); |
| |
| if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL) && |
| (ieee80211_is_data(hdr->frame_control)) && |
| (rates_idx != -1)) |
| sta->deflink.tx_stats.last_rate = |
| info->status.rates[rates_idx]; |
| |
| if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
| (ieee80211_is_data_qos(fc))) { |
| u16 ssn; |
| u8 *qc; |
| |
| qc = ieee80211_get_qos_ctl(hdr); |
| tid = qc[0] & 0xf; |
| ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) |
| & IEEE80211_SCTL_SEQ); |
| ieee80211_send_bar(&sta->sdata->vif, hdr->addr1, |
| tid, ssn); |
| } else if (ieee80211_is_data_qos(fc)) { |
| u8 *qc = ieee80211_get_qos_ctl(hdr); |
| |
| tid = qc[0] & 0xf; |
| } |
| |
| if (!acked && ieee80211_is_back_req(fc)) { |
| u16 control; |
| |
| /* |
| * BAR failed, store the last SSN and retry sending |
| * the BAR when the next unicast transmission on the |
| * same TID succeeds. |
| */ |
| bar = (struct ieee80211_bar *) skb->data; |
| control = le16_to_cpu(bar->control); |
| if (!(control & IEEE80211_BAR_CTRL_MULTI_TID)) { |
| u16 ssn = le16_to_cpu(bar->start_seq_num); |
| |
| tid = (control & |
| IEEE80211_BAR_CTRL_TID_INFO_MASK) >> |
| IEEE80211_BAR_CTRL_TID_INFO_SHIFT; |
| |
| ieee80211_set_bar_pending(sta, tid, ssn); |
| } |
| } |
| |
| if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
| ieee80211_handle_filtered_frame(local, sta, skb); |
| return; |
| } else if (ieee80211_is_data_present(fc)) { |
| if (!acked && !noack_success) |
| sta->deflink.status_stats.msdu_failed[tid]++; |
| |
| sta->deflink.status_stats.msdu_retries[tid] += |
| retry_count; |
| } |
| |
| if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked) |
| ieee80211_frame_acked(sta, skb); |
| |
| } |
| |
| /* SNMP counters |
| * Fragments are passed to low-level drivers as separate skbs, so these |
| * are actually fragments, not frames. Update frame counters only for |
| * the first fragment of the frame. */ |
| if ((info->flags & IEEE80211_TX_STAT_ACK) || |
| (info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED)) { |
| if (ieee80211_is_first_frag(hdr->seq_ctrl)) { |
| I802_DEBUG_INC(local->dot11TransmittedFrameCount); |
| if (is_multicast_ether_addr(ieee80211_get_DA(hdr))) |
| I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); |
| if (retry_count > 0) |
| I802_DEBUG_INC(local->dot11RetryCount); |
| if (retry_count > 1) |
| I802_DEBUG_INC(local->dot11MultipleRetryCount); |
| } |
| |
| /* This counter shall be incremented for an acknowledged MPDU |
| * with an individual address in the address 1 field or an MPDU |
| * with a multicast address in the address 1 field of type Data |
| * or Management. */ |
| if (!is_multicast_ether_addr(hdr->addr1) || |
| ieee80211_is_data(fc) || |
| ieee80211_is_mgmt(fc)) |
| I802_DEBUG_INC(local->dot11TransmittedFragmentCount); |
| } else { |
| if (ieee80211_is_first_frag(hdr->seq_ctrl)) |
| I802_DEBUG_INC(local->dot11FailedCount); |
| } |
| |
| if (ieee80211_is_any_nullfunc(fc) && |
| ieee80211_has_pm(fc) && |
| ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && |
| !(info->flags & IEEE80211_TX_CTL_INJECTED) && |
| local->ps_sdata && !(local->scanning)) { |
| if (info->flags & IEEE80211_TX_STAT_ACK) |
| local->ps_sdata->u.mgd.flags |= |
| IEEE80211_STA_NULLFUNC_ACKED; |
| mod_timer(&local->dynamic_ps_timer, |
| jiffies + msecs_to_jiffies(10)); |
| } |
| |
| ieee80211_report_used_skb(local, skb, false, status->ack_hwtstamp); |
| |
| /* this was a transmitted frame, but now we want to reuse it */ |
| skb_orphan(skb); |
| |
| /* Need to make a copy before skb->cb gets cleared */ |
| send_to_cooked = !!(info->flags & IEEE80211_TX_CTL_INJECTED) || |
| !(ieee80211_is_data(fc)); |
| |
| /* |
| * This is a bit racy but we can avoid a lot of work |
| * with this test... |
| */ |
| if (!local->monitors && (!send_to_cooked || !local->cooked_mntrs)) { |
| if (status->free_list) |
| list_add_tail(&skb->list, status->free_list); |
| else |
| dev_kfree_skb(skb); |
| return; |
| } |
| |
| /* send to monitor interfaces */ |
| ieee80211_tx_monitor(local, skb, retry_count, shift, |
| send_to_cooked, status); |
| } |
| |
| void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
| { |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| struct ieee80211_local *local = hw_to_local(hw); |
| struct ieee80211_tx_status status = { |
| .skb = skb, |
| .info = IEEE80211_SKB_CB(skb), |
| }; |
| struct sta_info *sta; |
| |
| rcu_read_lock(); |
| |
| sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2); |
| if (sta) |
| status.sta = &sta->sta; |
| |
| ieee80211_tx_status_ext(hw, &status); |
| rcu_read_unlock(); |
| } |
| EXPORT_SYMBOL(ieee80211_tx_status); |
| |
| void ieee80211_tx_status_ext(struct ieee80211_hw *hw, |
| struct ieee80211_tx_status *status) |
| { |
| struct ieee80211_local *local = hw_to_local(hw); |
| struct ieee80211_tx_info *info = status->info; |
| struct ieee80211_sta *pubsta = status->sta; |
| struct sk_buff *skb = status->skb; |
| struct sta_info *sta = NULL; |
| int rates_idx, retry_count; |
| bool acked, noack_success, ack_signal_valid; |
| u16 tx_time_est; |
| |
| if (pubsta) { |
| sta = container_of(pubsta, struct sta_info, sta); |
| |
| if (status->n_rates) |
| sta->deflink.tx_stats.last_rate_info = |
| status->rates[status->n_rates - 1].rate_idx; |
| } |
| |
| if (skb && (tx_time_est = |
| ieee80211_info_get_tx_time_est(IEEE80211_SKB_CB(skb))) > 0) { |
| /* Do this here to avoid the expensive lookup of the sta |
| * in ieee80211_report_used_skb(). |
| */ |
| ieee80211_sta_update_pending_airtime(local, sta, |
| skb_get_queue_mapping(skb), |
| tx_time_est, |
| true); |
| ieee80211_info_set_tx_time_est(IEEE80211_SKB_CB(skb), 0); |
| } |
| |
| if (!status->info) |
| goto free; |
| |
| rates_idx = ieee80211_tx_get_rates(hw, info, &retry_count); |
| |
| acked = !!(info->flags & IEEE80211_TX_STAT_ACK); |
| noack_success = !!(info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED); |
| ack_signal_valid = |
| !!(info->status.flags & IEEE80211_TX_STATUS_ACK_SIGNAL_VALID); |
| |
| if (pubsta) { |
| struct ieee80211_sub_if_data *sdata = sta->sdata; |
| |
| if (!acked && !noack_success) |
| sta->deflink.status_stats.retry_failed++; |
| sta->deflink.status_stats.retry_count += retry_count; |
| |
| if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
| if (sdata->vif.type == NL80211_IFTYPE_STATION && |
| skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) |
| ieee80211_sta_tx_notify(sdata, (void *) skb->data, |
| acked, info->status.tx_time); |
| |
| if (acked) { |
| sta->deflink.status_stats.last_ack = jiffies; |
| |
| if (sta->deflink.status_stats.lost_packets) |
| sta->deflink.status_stats.lost_packets = 0; |
| |
| /* Track when last packet was ACKed */ |
| sta->deflink.status_stats.last_pkt_time = jiffies; |
| |
| /* Reset connection monitor */ |
| if (sdata->vif.type == NL80211_IFTYPE_STATION && |
| unlikely(sdata->u.mgd.probe_send_count > 0)) |
| sdata->u.mgd.probe_send_count = 0; |
| |
| if (ack_signal_valid) { |
| sta->deflink.status_stats.last_ack_signal = |
| (s8)info->status.ack_signal; |
| sta->deflink.status_stats.ack_signal_filled = true; |
| ewma_avg_signal_add(&sta->deflink.status_stats.avg_ack_signal, |
| -info->status.ack_signal); |
| } |
| } else if (test_sta_flag(sta, WLAN_STA_PS_STA)) { |
| /* |
| * The STA is in power save mode, so assume |
| * that this TX packet failed because of that. |
| */ |
| if (skb) |
| ieee80211_handle_filtered_frame(local, sta, skb); |
| return; |
| } else if (noack_success) { |
| /* nothing to do here, do not account as lost */ |
| } else { |
| ieee80211_lost_packet(sta, info); |
| } |
| } |
| |
| rate_control_tx_status(local, status); |
| if (ieee80211_vif_is_mesh(&sta->sdata->vif)) |
| ieee80211s_update_metric(local, sta, status); |
| } |
| |
| if (skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) |
| return __ieee80211_tx_status(hw, status, rates_idx, |
| retry_count); |
| |
| if (acked || noack_success) { |
| I802_DEBUG_INC(local->dot11TransmittedFrameCount); |
| if (!pubsta) |
| I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); |
| if (retry_count > 0) |
| I802_DEBUG_INC(local->dot11RetryCount); |
| if (retry_count > 1) |
| I802_DEBUG_INC(local->dot11MultipleRetryCount); |
| } else { |
| I802_DEBUG_INC(local->dot11FailedCount); |
| } |
| |
| free: |
| if (!skb) |
| return; |
| |
| ieee80211_report_used_skb(local, skb, false, status->ack_hwtstamp); |
| if (status->free_list) |
| list_add_tail(&skb->list, status->free_list); |
| else |
| dev_kfree_skb(skb); |
| } |
| EXPORT_SYMBOL(ieee80211_tx_status_ext); |
| |
| void ieee80211_tx_rate_update(struct ieee80211_hw *hw, |
| struct ieee80211_sta *pubsta, |
| struct ieee80211_tx_info *info) |
| { |
| struct ieee80211_local *local = hw_to_local(hw); |
| struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
| struct ieee80211_tx_status status = { |
| .info = info, |
| .sta = pubsta, |
| }; |
| |
| rate_control_tx_status(local, &status); |
| |
| if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
| sta->deflink.tx_stats.last_rate = info->status.rates[0]; |
| } |
| EXPORT_SYMBOL(ieee80211_tx_rate_update); |
| |
| void ieee80211_report_low_ack(struct ieee80211_sta *pubsta, u32 num_packets) |
| { |
| struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
| cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, |
| num_packets, GFP_ATOMIC); |
| } |
| EXPORT_SYMBOL(ieee80211_report_low_ack); |
| |
| void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb) |
| { |
| struct ieee80211_local *local = hw_to_local(hw); |
| ktime_t kt = ktime_set(0, 0); |
| |
| ieee80211_report_used_skb(local, skb, true, kt); |
| dev_kfree_skb_any(skb); |
| } |
| EXPORT_SYMBOL(ieee80211_free_txskb); |
| |
| void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, |
| struct sk_buff_head *skbs) |
| { |
| struct sk_buff *skb; |
| |
| while ((skb = __skb_dequeue(skbs))) |
| ieee80211_free_txskb(hw, skb); |
| } |