From: Felix Fietkau Date: Fri, 28 Jan 2022 12:51:22 +0000 (+0100) Subject: mac80211: reorganize patches X-Git-Tag: v22.03.0-rc1~584 X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=543ada64edb88ff68328bcde5418eac7afcc3634;p=openwrt%2Fopenwrt.git mac80211: reorganize patches Signed-off-by: Felix Fietkau --- diff --git a/package/kernel/mac80211/patches/subsys/300-mac80211-fix-rate-control-for-retransmitted-frames.patch b/package/kernel/mac80211/patches/subsys/300-mac80211-fix-rate-control-for-retransmitted-frames.patch new file mode 100644 index 0000000000..98dfe88cbd --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/300-mac80211-fix-rate-control-for-retransmitted-frames.patch @@ -0,0 +1,35 @@ +From: Felix Fietkau +Date: Mon, 22 Nov 2021 21:39:38 +0100 +Subject: [PATCH] mac80211: fix rate control for retransmitted frames + +Since retransmission clears info->control, rate control needs to be called +again, otherwise the driver might crash due to invalid rates. + +Cc: stable@vger.kernel.org # 5.14+ +Reported-by: Aaro Koskinen +Reported-by: Robert W +Fixes: 03c3911d2d67 ("mac80211: call ieee80211_tx_h_rate_ctrl() when dequeue") +Signed-off-by: Felix Fietkau +--- + +--- a/net/mac80211/tx.c ++++ b/net/mac80211/tx.c +@@ -1821,15 +1821,15 @@ static int invoke_tx_handlers_late(struc + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb); + ieee80211_tx_result res = TX_CONTINUE; + ++ if (!ieee80211_hw_check(&tx->local->hw, HAS_RATE_CONTROL)) ++ CALL_TXH(ieee80211_tx_h_rate_ctrl); ++ + if (unlikely(info->flags & IEEE80211_TX_INTFL_RETRANSMISSION)) { + __skb_queue_tail(&tx->skbs, tx->skb); + tx->skb = NULL; + goto txh_done; + } + +- if (!ieee80211_hw_check(&tx->local->hw, HAS_RATE_CONTROL)) +- CALL_TXH(ieee80211_tx_h_rate_ctrl); +- + CALL_TXH(ieee80211_tx_h_michael_mic_add); + CALL_TXH(ieee80211_tx_h_sequence); + CALL_TXH(ieee80211_tx_h_fragment); diff --git a/package/kernel/mac80211/patches/subsys/301-mac80211-fix-rate-control-for-retransmitted-frames.patch b/package/kernel/mac80211/patches/subsys/301-mac80211-fix-rate-control-for-retransmitted-frames.patch deleted file mode 100644 index 98dfe88cbd..0000000000 --- a/package/kernel/mac80211/patches/subsys/301-mac80211-fix-rate-control-for-retransmitted-frames.patch +++ /dev/null @@ -1,35 +0,0 @@ -From: Felix Fietkau -Date: Mon, 22 Nov 2021 21:39:38 +0100 -Subject: [PATCH] mac80211: fix rate control for retransmitted frames - -Since retransmission clears info->control, rate control needs to be called -again, otherwise the driver might crash due to invalid rates. - -Cc: stable@vger.kernel.org # 5.14+ -Reported-by: Aaro Koskinen -Reported-by: Robert W -Fixes: 03c3911d2d67 ("mac80211: call ieee80211_tx_h_rate_ctrl() when dequeue") -Signed-off-by: Felix Fietkau ---- - ---- a/net/mac80211/tx.c -+++ b/net/mac80211/tx.c -@@ -1821,15 +1821,15 @@ static int invoke_tx_handlers_late(struc - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb); - ieee80211_tx_result res = TX_CONTINUE; - -+ if (!ieee80211_hw_check(&tx->local->hw, HAS_RATE_CONTROL)) -+ CALL_TXH(ieee80211_tx_h_rate_ctrl); -+ - if (unlikely(info->flags & IEEE80211_TX_INTFL_RETRANSMISSION)) { - __skb_queue_tail(&tx->skbs, tx->skb); - tx->skb = NULL; - goto txh_done; - } - -- if (!ieee80211_hw_check(&tx->local->hw, HAS_RATE_CONTROL)) -- CALL_TXH(ieee80211_tx_h_rate_ctrl); -- - CALL_TXH(ieee80211_tx_h_michael_mic_add); - CALL_TXH(ieee80211_tx_h_sequence); - CALL_TXH(ieee80211_tx_h_fragment); diff --git a/package/kernel/mac80211/patches/subsys/301-mac80211-sta-randomize-BA-session-dialog-token-alloc.patch b/package/kernel/mac80211/patches/subsys/301-mac80211-sta-randomize-BA-session-dialog-token-alloc.patch new file mode 100644 index 0000000000..d09d70725e --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/301-mac80211-sta-randomize-BA-session-dialog-token-alloc.patch @@ -0,0 +1,38 @@ +From b478e06a16a8baa00c5ecc87c1d636981f2206d5 Mon Sep 17 00:00:00 2001 +From: Johannes Berg +Date: Tue, 29 Oct 2019 10:25:25 +0100 +Subject: [PATCH] mac80211: sta: randomize BA session dialog token allocator + +We currently always start the dialog token generator at zero, +so the first dialog token we use is always 1. This would be +OK if we had a perfect guarantee that we always do a proper +deauth/re-auth handshake, but in IBSS mode this doesn't always +happen properly. + +To make problems with block ack (aggregation) sessions getting +stuck less likely, randomize the dialog token so if we start a +new session but the peer still has old state for us, it can +better detect this. + +This is really just a workaround to make things a bit more +robust than they are now - a better fix would be to do a full +authentication handshake in IBSS mode upon having discovered a +new station, and on the receiver resetting the state (removing +and re-adding the station) on receiving the authentication +packet. + +Signed-off-by: Johannes Berg +--- + net/mac80211/sta_info.c | 1 + + 1 file changed, 1 insertion(+) + +--- a/net/mac80211/sta_info.c ++++ b/net/mac80211/sta_info.c +@@ -357,6 +357,7 @@ struct sta_info *sta_info_alloc(struct i + INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); + INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); + mutex_init(&sta->ampdu_mlme.mtx); ++ sta->ampdu_mlme.dialog_token_allocator = prandom_u32_max(U8_MAX); + #ifdef CPTCFG_MAC80211_MESH + if (ieee80211_vif_is_mesh(&sdata->vif)) { + sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); diff --git a/package/kernel/mac80211/patches/subsys/302-mac80211-fix-regression-in-SSN-handling-of-addba-tx.patch b/package/kernel/mac80211/patches/subsys/302-mac80211-fix-regression-in-SSN-handling-of-addba-tx.patch new file mode 100644 index 0000000000..dc8afb9186 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/302-mac80211-fix-regression-in-SSN-handling-of-addba-tx.patch @@ -0,0 +1,44 @@ +From: Felix Fietkau +Date: Wed, 24 Nov 2021 10:30:41 +0100 +Subject: [PATCH] mac80211: fix regression in SSN handling of addba tx + +Some drivers that do their own sequence number allocation (e.g. ath9k) rely +on being able to modify params->ssn on starting tx ampdu sessions. +This was broken by a change that modified it to use sta->tid_seq[tid] instead. + +Cc: stable@vger.kernel.org +Fixes: 31d8bb4e07f8 ("mac80211: agg-tx: refactor sending addba") +Reported-by: Eneas U de Queiroz +Signed-off-by: Felix Fietkau +--- + +--- a/net/mac80211/agg-tx.c ++++ b/net/mac80211/agg-tx.c +@@ -480,8 +480,7 @@ static void ieee80211_send_addba_with_ti + + /* send AddBA request */ + ieee80211_send_addba_request(sdata, sta->sta.addr, tid, +- tid_tx->dialog_token, +- sta->tid_seq[tid] >> 4, ++ tid_tx->dialog_token, tid_tx->ssn, + buf_size, tid_tx->timeout); + + WARN_ON(test_and_set_bit(HT_AGG_STATE_SENT_ADDBA, &tid_tx->state)); +@@ -523,6 +522,7 @@ void ieee80211_tx_ba_session_handle_star + + params.ssn = sta->tid_seq[tid] >> 4; + ret = drv_ampdu_action(local, sdata, ¶ms); ++ tid_tx->ssn = params.ssn; + if (ret == IEEE80211_AMPDU_TX_START_DELAY_ADDBA) { + return; + } else if (ret == IEEE80211_AMPDU_TX_START_IMMEDIATE) { +--- a/net/mac80211/sta_info.h ++++ b/net/mac80211/sta_info.h +@@ -199,6 +199,7 @@ struct tid_ampdu_tx { + u8 stop_initiator; + bool tx_stop; + u16 buf_size; ++ u16 ssn; + + u16 failed_bar_ssn; + bool bar_pending; diff --git a/package/kernel/mac80211/patches/subsys/303-mac80211-set-up-the-fwd_skb-dev-for-mesh-forwarding.patch b/package/kernel/mac80211/patches/subsys/303-mac80211-set-up-the-fwd_skb-dev-for-mesh-forwarding.patch new file mode 100644 index 0000000000..1ceb2be25c --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/303-mac80211-set-up-the-fwd_skb-dev-for-mesh-forwarding.patch @@ -0,0 +1,62 @@ +From: Xing Song +Date: Tue, 23 Nov 2021 11:31:23 +0800 +Subject: [PATCH] mac80211: set up the fwd_skb->dev for mesh forwarding + +Mesh forwarding requires that the fwd_skb->dev is set up for TX handling, +otherwise the following warning will be generated, so set it up for the +pending frames. + +[ 72.835674 ] WARNING: CPU: 0 PID: 1193 at __skb_flow_dissect+0x284/0x1298 +[ 72.842379 ] Modules linked in: ksmbd pppoe ppp_async l2tp_ppp ... +[ 72.962020 ] CPU: 0 PID: 1193 Comm: kworker/u5:1 Tainted: P S 5.4.137 #0 +[ 72.969938 ] Hardware name: MT7622_MT7531 RFB (DT) +[ 72.974659 ] Workqueue: napi_workq napi_workfn +[ 72.979025 ] pstate: 60000005 (nZCv daif -PAN -UAO) +[ 72.983822 ] pc : __skb_flow_dissect+0x284/0x1298 +[ 72.988444 ] lr : __skb_flow_dissect+0x54/0x1298 +[ 72.992977 ] sp : ffffffc010c738c0 +[ 72.996293 ] x29: ffffffc010c738c0 x28: 0000000000000000 +[ 73.001615 ] x27: 000000000000ffc2 x26: ffffff800c2eb818 +[ 73.006937 ] x25: ffffffc010a987c8 x24: 00000000000000ce +[ 73.012259 ] x23: ffffffc010c73a28 x22: ffffffc010a99c60 +[ 73.017581 ] x21: 000000000000ffc2 x20: ffffff80094da800 +[ 73.022903 ] x19: 0000000000000000 x18: 0000000000000014 +[ 73.028226 ] x17: 00000000084d16af x16: 00000000d1fc0bab +[ 73.033548 ] x15: 00000000715f6034 x14: 000000009dbdd301 +[ 73.038870 ] x13: 00000000ea4dcbc3 x12: 0000000000000040 +[ 73.044192 ] x11: 000000000eb00ff0 x10: 0000000000000000 +[ 73.049513 ] x9 : 000000000eb00073 x8 : 0000000000000088 +[ 73.054834 ] x7 : 0000000000000000 x6 : 0000000000000001 +[ 73.060155 ] x5 : 0000000000000000 x4 : 0000000000000000 +[ 73.065476 ] x3 : ffffffc010a98000 x2 : 0000000000000000 +[ 73.070797 ] x1 : 0000000000000000 x0 : 0000000000000000 +[ 73.076120 ] Call trace: +[ 73.078572 ] __skb_flow_dissect+0x284/0x1298 +[ 73.082846 ] __skb_get_hash+0x7c/0x228 +[ 73.086629 ] ieee80211_txq_may_transmit+0x7fc/0x17b8 [mac80211] +[ 73.092564 ] ieee80211_tx_prepare_skb+0x20c/0x268 [mac80211] +[ 73.098238 ] ieee80211_tx_pending+0x144/0x330 [mac80211] +[ 73.103560 ] tasklet_action_common.isra.16+0xb4/0x158 +[ 73.108618 ] tasklet_action+0x2c/0x38 +[ 73.112286 ] __do_softirq+0x168/0x3b0 +[ 73.115954 ] do_softirq.part.15+0x88/0x98 +[ 73.119969 ] __local_bh_enable_ip+0xb0/0xb8 +[ 73.124156 ] napi_workfn+0x58/0x90 +[ 73.127565 ] process_one_work+0x20c/0x478 +[ 73.131579 ] worker_thread+0x50/0x4f0 +[ 73.135249 ] kthread+0x124/0x128 +[ 73.138484 ] ret_from_fork+0x10/0x1c + +Signed-off-by: Xing Song +--- + +--- a/net/mac80211/rx.c ++++ b/net/mac80211/rx.c +@@ -2948,6 +2948,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80 + if (!fwd_skb) + goto out; + ++ fwd_skb->dev = sdata->dev; + fwd_hdr = (struct ieee80211_hdr *) fwd_skb->data; + fwd_hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_RETRY); + info = IEEE80211_SKB_CB(fwd_skb); diff --git a/package/kernel/mac80211/patches/subsys/304-mac80211-send-ADDBA-requests-using-the-tid-queue-of-.patch b/package/kernel/mac80211/patches/subsys/304-mac80211-send-ADDBA-requests-using-the-tid-queue-of-.patch new file mode 100644 index 0000000000..1c213289c5 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/304-mac80211-send-ADDBA-requests-using-the-tid-queue-of-.patch @@ -0,0 +1,28 @@ +From: Felix Fietkau +Date: Thu, 2 Dec 2021 13:30:05 +0100 +Subject: [PATCH] mac80211: send ADDBA requests using the tid/queue of the + aggregation session + +Sending them out on a different queue can cause a race condition where a +number of packets in the queue may be discarded by the receiver, because +the ADDBA request is sent too early. +This affects any driver with software A-MPDU setup which does not allocate +packet seqno in hardware on tx, regardless of whether iTXQ is used or not. +The only driver I've seen that explicitly deals with this issue internally +is mwl8k. + +Cc: stable@vger.kernel.org +Signed-off-by: Felix Fietkau +--- + +--- a/net/mac80211/agg-tx.c ++++ b/net/mac80211/agg-tx.c +@@ -106,7 +106,7 @@ static void ieee80211_send_addba_request + mgmt->u.action.u.addba_req.start_seq_num = + cpu_to_le16(start_seq_num << 4); + +- ieee80211_tx_skb(sdata, skb); ++ ieee80211_tx_skb_tid(sdata, skb, tid); + } + + void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn) diff --git a/package/kernel/mac80211/patches/subsys/304-mac80211-sta-randomize-BA-session-dialog-token-alloc.patch b/package/kernel/mac80211/patches/subsys/304-mac80211-sta-randomize-BA-session-dialog-token-alloc.patch deleted file mode 100644 index d09d70725e..0000000000 --- a/package/kernel/mac80211/patches/subsys/304-mac80211-sta-randomize-BA-session-dialog-token-alloc.patch +++ /dev/null @@ -1,38 +0,0 @@ -From b478e06a16a8baa00c5ecc87c1d636981f2206d5 Mon Sep 17 00:00:00 2001 -From: Johannes Berg -Date: Tue, 29 Oct 2019 10:25:25 +0100 -Subject: [PATCH] mac80211: sta: randomize BA session dialog token allocator - -We currently always start the dialog token generator at zero, -so the first dialog token we use is always 1. This would be -OK if we had a perfect guarantee that we always do a proper -deauth/re-auth handshake, but in IBSS mode this doesn't always -happen properly. - -To make problems with block ack (aggregation) sessions getting -stuck less likely, randomize the dialog token so if we start a -new session but the peer still has old state for us, it can -better detect this. - -This is really just a workaround to make things a bit more -robust than they are now - a better fix would be to do a full -authentication handshake in IBSS mode upon having discovered a -new station, and on the receiver resetting the state (removing -and re-adding the station) on receiving the authentication -packet. - -Signed-off-by: Johannes Berg ---- - net/mac80211/sta_info.c | 1 + - 1 file changed, 1 insertion(+) - ---- a/net/mac80211/sta_info.c -+++ b/net/mac80211/sta_info.c -@@ -357,6 +357,7 @@ struct sta_info *sta_info_alloc(struct i - INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); - INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); - mutex_init(&sta->ampdu_mlme.mtx); -+ sta->ampdu_mlme.dialog_token_allocator = prandom_u32_max(U8_MAX); - #ifdef CPTCFG_MAC80211_MESH - if (ieee80211_vif_is_mesh(&sdata->vif)) { - sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); diff --git a/package/kernel/mac80211/patches/subsys/305-mac80211-agg-tx-don-t-schedule_and_wake_txq-under-st.patch b/package/kernel/mac80211/patches/subsys/305-mac80211-agg-tx-don-t-schedule_and_wake_txq-under-st.patch new file mode 100644 index 0000000000..008ee49cfb --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/305-mac80211-agg-tx-don-t-schedule_and_wake_txq-under-st.patch @@ -0,0 +1,79 @@ +From: Johannes Berg +Date: Mon, 29 Nov 2021 15:32:47 +0200 +Subject: [PATCH] mac80211: agg-tx: don't schedule_and_wake_txq() under + sta->lock + +When we call ieee80211_agg_start_txq(), that will in turn call +schedule_and_wake_txq(). Called from ieee80211_stop_tx_ba_cb() +this is done under sta->lock, which leads to certain circular +lock dependencies, as reported by Chris Murphy: +https://lore.kernel.org/r/CAJCQCtSXJ5qA4bqSPY=oLRMbv-irihVvP7A2uGutEbXQVkoNaw@mail.gmail.com + +In general, ieee80211_agg_start_txq() is usually not called +with sta->lock held, only in this one place. But it's always +called with sta->ampdu_mlme.mtx held, and that's therefore +clearly sufficient. + +Change ieee80211_stop_tx_ba_cb() to also call it without the +sta->lock held, by factoring it out of ieee80211_remove_tid_tx() +(which is only called in this one place). + +This breaks the locking chain and makes it less likely that +we'll have similar locking chain problems in the future. + +Reported-by: Chris Murphy +Signed-off-by: Johannes Berg +Signed-off-by: Luca Coelho +--- + +--- a/net/mac80211/agg-tx.c ++++ b/net/mac80211/agg-tx.c +@@ -9,7 +9,7 @@ + * Copyright 2007, Michael Wu + * Copyright 2007-2010, Intel Corporation + * Copyright(c) 2015-2017 Intel Deutschland GmbH +- * Copyright (C) 2018 - 2020 Intel Corporation ++ * Copyright (C) 2018 - 2021 Intel Corporation + */ + + #include +@@ -213,6 +213,8 @@ ieee80211_agg_start_txq(struct sta_info + struct ieee80211_txq *txq = sta->sta.txq[tid]; + struct txq_info *txqi; + ++ lockdep_assert_held(&sta->ampdu_mlme.mtx); ++ + if (!txq) + return; + +@@ -290,7 +292,6 @@ static void ieee80211_remove_tid_tx(stru + ieee80211_assign_tid_tx(sta, tid, NULL); + + ieee80211_agg_splice_finish(sta->sdata, tid); +- ieee80211_agg_start_txq(sta, tid, false); + + kfree_rcu(tid_tx, rcu_head); + } +@@ -889,6 +890,7 @@ void ieee80211_stop_tx_ba_cb(struct sta_ + { + struct ieee80211_sub_if_data *sdata = sta->sdata; + bool send_delba = false; ++ bool start_txq = false; + + ht_dbg(sdata, "Stopping Tx BA session for %pM tid %d\n", + sta->sta.addr, tid); +@@ -906,10 +908,14 @@ void ieee80211_stop_tx_ba_cb(struct sta_ + send_delba = true; + + ieee80211_remove_tid_tx(sta, tid); ++ start_txq = true; + + unlock_sta: + spin_unlock_bh(&sta->lock); + ++ if (start_txq) ++ ieee80211_agg_start_txq(sta, tid, false); ++ + if (send_delba) + ieee80211_send_delba(sdata, sta->sta.addr, tid, + WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); diff --git a/package/kernel/mac80211/patches/subsys/305-mac80211-fix-regression-in-SSN-handling-of-addba-tx.patch b/package/kernel/mac80211/patches/subsys/305-mac80211-fix-regression-in-SSN-handling-of-addba-tx.patch deleted file mode 100644 index dc8afb9186..0000000000 --- a/package/kernel/mac80211/patches/subsys/305-mac80211-fix-regression-in-SSN-handling-of-addba-tx.patch +++ /dev/null @@ -1,44 +0,0 @@ -From: Felix Fietkau -Date: Wed, 24 Nov 2021 10:30:41 +0100 -Subject: [PATCH] mac80211: fix regression in SSN handling of addba tx - -Some drivers that do their own sequence number allocation (e.g. ath9k) rely -on being able to modify params->ssn on starting tx ampdu sessions. -This was broken by a change that modified it to use sta->tid_seq[tid] instead. - -Cc: stable@vger.kernel.org -Fixes: 31d8bb4e07f8 ("mac80211: agg-tx: refactor sending addba") -Reported-by: Eneas U de Queiroz -Signed-off-by: Felix Fietkau ---- - ---- a/net/mac80211/agg-tx.c -+++ b/net/mac80211/agg-tx.c -@@ -480,8 +480,7 @@ static void ieee80211_send_addba_with_ti - - /* send AddBA request */ - ieee80211_send_addba_request(sdata, sta->sta.addr, tid, -- tid_tx->dialog_token, -- sta->tid_seq[tid] >> 4, -+ tid_tx->dialog_token, tid_tx->ssn, - buf_size, tid_tx->timeout); - - WARN_ON(test_and_set_bit(HT_AGG_STATE_SENT_ADDBA, &tid_tx->state)); -@@ -523,6 +522,7 @@ void ieee80211_tx_ba_session_handle_star - - params.ssn = sta->tid_seq[tid] >> 4; - ret = drv_ampdu_action(local, sdata, ¶ms); -+ tid_tx->ssn = params.ssn; - if (ret == IEEE80211_AMPDU_TX_START_DELAY_ADDBA) { - return; - } else if (ret == IEEE80211_AMPDU_TX_START_IMMEDIATE) { ---- a/net/mac80211/sta_info.h -+++ b/net/mac80211/sta_info.h -@@ -199,6 +199,7 @@ struct tid_ampdu_tx { - u8 stop_initiator; - bool tx_stop; - u16 buf_size; -+ u16 ssn; - - u16 failed_bar_ssn; - bool bar_pending; diff --git a/package/kernel/mac80211/patches/subsys/306-mac80211-set-up-the-fwd_skb-dev-for-mesh-forwarding.patch b/package/kernel/mac80211/patches/subsys/306-mac80211-set-up-the-fwd_skb-dev-for-mesh-forwarding.patch deleted file mode 100644 index 1ceb2be25c..0000000000 --- a/package/kernel/mac80211/patches/subsys/306-mac80211-set-up-the-fwd_skb-dev-for-mesh-forwarding.patch +++ /dev/null @@ -1,62 +0,0 @@ -From: Xing Song -Date: Tue, 23 Nov 2021 11:31:23 +0800 -Subject: [PATCH] mac80211: set up the fwd_skb->dev for mesh forwarding - -Mesh forwarding requires that the fwd_skb->dev is set up for TX handling, -otherwise the following warning will be generated, so set it up for the -pending frames. - -[ 72.835674 ] WARNING: CPU: 0 PID: 1193 at __skb_flow_dissect+0x284/0x1298 -[ 72.842379 ] Modules linked in: ksmbd pppoe ppp_async l2tp_ppp ... -[ 72.962020 ] CPU: 0 PID: 1193 Comm: kworker/u5:1 Tainted: P S 5.4.137 #0 -[ 72.969938 ] Hardware name: MT7622_MT7531 RFB (DT) -[ 72.974659 ] Workqueue: napi_workq napi_workfn -[ 72.979025 ] pstate: 60000005 (nZCv daif -PAN -UAO) -[ 72.983822 ] pc : __skb_flow_dissect+0x284/0x1298 -[ 72.988444 ] lr : __skb_flow_dissect+0x54/0x1298 -[ 72.992977 ] sp : ffffffc010c738c0 -[ 72.996293 ] x29: ffffffc010c738c0 x28: 0000000000000000 -[ 73.001615 ] x27: 000000000000ffc2 x26: ffffff800c2eb818 -[ 73.006937 ] x25: ffffffc010a987c8 x24: 00000000000000ce -[ 73.012259 ] x23: ffffffc010c73a28 x22: ffffffc010a99c60 -[ 73.017581 ] x21: 000000000000ffc2 x20: ffffff80094da800 -[ 73.022903 ] x19: 0000000000000000 x18: 0000000000000014 -[ 73.028226 ] x17: 00000000084d16af x16: 00000000d1fc0bab -[ 73.033548 ] x15: 00000000715f6034 x14: 000000009dbdd301 -[ 73.038870 ] x13: 00000000ea4dcbc3 x12: 0000000000000040 -[ 73.044192 ] x11: 000000000eb00ff0 x10: 0000000000000000 -[ 73.049513 ] x9 : 000000000eb00073 x8 : 0000000000000088 -[ 73.054834 ] x7 : 0000000000000000 x6 : 0000000000000001 -[ 73.060155 ] x5 : 0000000000000000 x4 : 0000000000000000 -[ 73.065476 ] x3 : ffffffc010a98000 x2 : 0000000000000000 -[ 73.070797 ] x1 : 0000000000000000 x0 : 0000000000000000 -[ 73.076120 ] Call trace: -[ 73.078572 ] __skb_flow_dissect+0x284/0x1298 -[ 73.082846 ] __skb_get_hash+0x7c/0x228 -[ 73.086629 ] ieee80211_txq_may_transmit+0x7fc/0x17b8 [mac80211] -[ 73.092564 ] ieee80211_tx_prepare_skb+0x20c/0x268 [mac80211] -[ 73.098238 ] ieee80211_tx_pending+0x144/0x330 [mac80211] -[ 73.103560 ] tasklet_action_common.isra.16+0xb4/0x158 -[ 73.108618 ] tasklet_action+0x2c/0x38 -[ 73.112286 ] __do_softirq+0x168/0x3b0 -[ 73.115954 ] do_softirq.part.15+0x88/0x98 -[ 73.119969 ] __local_bh_enable_ip+0xb0/0xb8 -[ 73.124156 ] napi_workfn+0x58/0x90 -[ 73.127565 ] process_one_work+0x20c/0x478 -[ 73.131579 ] worker_thread+0x50/0x4f0 -[ 73.135249 ] kthread+0x124/0x128 -[ 73.138484 ] ret_from_fork+0x10/0x1c - -Signed-off-by: Xing Song ---- - ---- a/net/mac80211/rx.c -+++ b/net/mac80211/rx.c -@@ -2948,6 +2948,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80 - if (!fwd_skb) - goto out; - -+ fwd_skb->dev = sdata->dev; - fwd_hdr = (struct ieee80211_hdr *) fwd_skb->data; - fwd_hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_RETRY); - info = IEEE80211_SKB_CB(fwd_skb); diff --git a/package/kernel/mac80211/patches/subsys/306-mac80211-use-coarse-boottime-for-airtime-fairness-co.patch b/package/kernel/mac80211/patches/subsys/306-mac80211-use-coarse-boottime-for-airtime-fairness-co.patch new file mode 100644 index 0000000000..c43cd3acb9 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/306-mac80211-use-coarse-boottime-for-airtime-fairness-co.patch @@ -0,0 +1,60 @@ +From: Felix Fietkau +Date: Tue, 14 Dec 2021 17:53:12 +0100 +Subject: [PATCH] mac80211: use coarse boottime for airtime fairness code + +The time values used by the airtime fairness code only need to be accurate +enough to cover station activity detection. +Using ktime_get_coarse_boottime_ns instead of ktime_get_boottime_ns will +drop the accuracy down to jiffies intervals, but at the same time saves +a lot of CPU cycles in a hot path + +Signed-off-by: Felix Fietkau +--- + +--- a/net/mac80211/tx.c ++++ b/net/mac80211/tx.c +@@ -3820,7 +3820,7 @@ struct ieee80211_txq *ieee80211_next_txq + { + struct ieee80211_local *local = hw_to_local(hw); + struct airtime_sched_info *air_sched; +- u64 now = ktime_get_boottime_ns(); ++ u64 now = ktime_get_coarse_boottime_ns(); + struct ieee80211_txq *ret = NULL; + struct airtime_info *air_info; + struct txq_info *txqi = NULL; +@@ -3947,7 +3947,7 @@ void ieee80211_update_airtime_weight(str + u64 weight_sum = 0; + + if (unlikely(!now)) +- now = ktime_get_boottime_ns(); ++ now = ktime_get_coarse_boottime_ns(); + + lockdep_assert_held(&air_sched->lock); + +@@ -3973,7 +3973,7 @@ void ieee80211_schedule_txq(struct ieee8 + struct ieee80211_local *local = hw_to_local(hw); + struct txq_info *txqi = to_txq_info(txq); + struct airtime_sched_info *air_sched; +- u64 now = ktime_get_boottime_ns(); ++ u64 now = ktime_get_coarse_boottime_ns(); + struct airtime_info *air_info; + u8 ac = txq->ac; + bool was_active; +@@ -4031,7 +4031,7 @@ static void __ieee80211_unschedule_txq(s + + if (!purge) + airtime_set_active(air_sched, air_info, +- ktime_get_boottime_ns()); ++ ktime_get_coarse_boottime_ns()); + + rb_erase_cached(&txqi->schedule_order, + &air_sched->active_txqs); +@@ -4119,7 +4119,7 @@ bool ieee80211_txq_may_transmit(struct i + if (RB_EMPTY_NODE(&txqi->schedule_order)) + goto out; + +- now = ktime_get_boottime_ns(); ++ now = ktime_get_coarse_boottime_ns(); + + /* Like in ieee80211_next_txq(), make sure the first station in the + * scheduling order is eligible for transmission to avoid starvation. diff --git a/package/kernel/mac80211/patches/subsys/307-mac80211_hwsim-make-6-GHz-channels-usable.patch b/package/kernel/mac80211/patches/subsys/307-mac80211_hwsim-make-6-GHz-channels-usable.patch new file mode 100644 index 0000000000..9c7417e5fc --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/307-mac80211_hwsim-make-6-GHz-channels-usable.patch @@ -0,0 +1,74 @@ +From: Felix Fietkau +Date: Mon, 24 May 2021 11:46:09 +0200 +Subject: [PATCH] mac80211_hwsim: make 6 GHz channels usable + +The previous commit that claimed to add 6 GHz channels didn't actually make +them usable, since the 6 GHz band was not registered with mac80211. + +Fixes: 28881922abd7 ("mac80211_hwsim: add 6GHz channels") +Signed-off-by: Felix Fietkau +--- + +--- a/drivers/net/wireless/mac80211_hwsim.c ++++ b/drivers/net/wireless/mac80211_hwsim.c +@@ -2992,15 +2992,19 @@ static void mac80211_hwsim_he_capab(stru + { + u16 n_iftype_data; + +- if (sband->band == NL80211_BAND_2GHZ) { ++ switch (sband->band) { ++ case NL80211_BAND_2GHZ: + n_iftype_data = ARRAY_SIZE(he_capa_2ghz); + sband->iftype_data = + (struct ieee80211_sband_iftype_data *)he_capa_2ghz; +- } else if (sband->band == NL80211_BAND_5GHZ) { ++ break; ++ case NL80211_BAND_5GHZ: ++ case NL80211_BAND_6GHZ: + n_iftype_data = ARRAY_SIZE(he_capa_5ghz); + sband->iftype_data = + (struct ieee80211_sband_iftype_data *)he_capa_5ghz; +- } else { ++ break; ++ default: + return; + } + +@@ -3290,6 +3294,12 @@ static int mac80211_hwsim_new_radio(stru + sband->vht_cap.vht_mcs.tx_mcs_map = + sband->vht_cap.vht_mcs.rx_mcs_map; + break; ++ case NL80211_BAND_6GHZ: ++ sband->channels = data->channels_6ghz; ++ sband->n_channels = ARRAY_SIZE(hwsim_channels_6ghz); ++ sband->bitrates = data->rates + 4; ++ sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4; ++ break; + case NL80211_BAND_S1GHZ: + memcpy(&sband->s1g_cap, &hwsim_s1g_cap, + sizeof(sband->s1g_cap)); +@@ -3300,6 +3310,13 @@ static int mac80211_hwsim_new_radio(stru + continue; + } + ++ mac80211_hwsim_he_capab(sband); ++ ++ hw->wiphy->bands[band] = sband; ++ ++ if (band == NL80211_BAND_6GHZ) ++ continue; ++ + sband->ht_cap.ht_supported = true; + sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | + IEEE80211_HT_CAP_GRN_FLD | +@@ -3313,10 +3330,6 @@ static int mac80211_hwsim_new_radio(stru + sband->ht_cap.mcs.rx_mask[0] = 0xff; + sband->ht_cap.mcs.rx_mask[1] = 0xff; + sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; +- +- mac80211_hwsim_he_capab(sband); +- +- hw->wiphy->bands[band] = sband; + } + + /* By default all radios belong to the first group */ diff --git a/package/kernel/mac80211/patches/subsys/308-mac80211-add-support-for-.ndo_fill_forward_path.patch b/package/kernel/mac80211/patches/subsys/308-mac80211-add-support-for-.ndo_fill_forward_path.patch new file mode 100644 index 0000000000..7764edfb27 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/308-mac80211-add-support-for-.ndo_fill_forward_path.patch @@ -0,0 +1,172 @@ +From: Felix Fietkau +Date: Fri, 12 Nov 2021 12:22:23 +0100 +Subject: [PATCH] mac80211: add support for .ndo_fill_forward_path + +This allows drivers to provide a destination device + info for flow offload +Only supported in combination with 802.3 encap offload + +Signed-off-by: Felix Fietkau +Tested-by: Lorenzo Bianconi +Link: https://lore.kernel.org/r/20211112112223.1209-1-nbd@nbd.name +Signed-off-by: Johannes Berg +--- + +--- a/include/net/mac80211.h ++++ b/include/net/mac80211.h +@@ -3937,6 +3937,8 @@ struct ieee80211_prep_tx_info { + * twt structure. + * @twt_teardown_request: Update the hw with TWT teardown request received + * from the peer. ++ * @net_fill_forward_path: Called from .ndo_fill_forward_path in order to ++ * resolve a path for hardware flow offloading + */ + struct ieee80211_ops { + void (*tx)(struct ieee80211_hw *hw, +@@ -4265,6 +4267,11 @@ struct ieee80211_ops { + struct ieee80211_twt_setup *twt); + void (*twt_teardown_request)(struct ieee80211_hw *hw, + struct ieee80211_sta *sta, u8 flowid); ++ int (*net_fill_forward_path)(struct ieee80211_hw *hw, ++ struct ieee80211_vif *vif, ++ struct ieee80211_sta *sta, ++ struct net_device_path_ctx *ctx, ++ struct net_device_path *path); + }; + + /** +--- a/net/mac80211/driver-ops.h ++++ b/net/mac80211/driver-ops.h +@@ -1483,4 +1483,26 @@ static inline void drv_twt_teardown_requ + trace_drv_return_void(local); + } + ++static inline int drv_net_fill_forward_path(struct ieee80211_local *local, ++ struct ieee80211_sub_if_data *sdata, ++ struct ieee80211_sta *sta, ++ struct net_device_path_ctx *ctx, ++ struct net_device_path *path) ++{ ++ int ret = -EOPNOTSUPP; ++ ++ sdata = get_bss_sdata(sdata); ++ if (!check_sdata_in_driver(sdata)) ++ return -EIO; ++ ++ trace_drv_net_fill_forward_path(local, sdata, sta); ++ if (local->ops->net_fill_forward_path) ++ ret = local->ops->net_fill_forward_path(&local->hw, ++ &sdata->vif, sta, ++ ctx, path); ++ trace_drv_return_int(local, ret); ++ ++ return ret; ++} ++ + #endif /* __MAC80211_DRIVER_OPS */ +--- a/net/mac80211/ieee80211_i.h ++++ b/net/mac80211/ieee80211_i.h +@@ -1465,7 +1465,7 @@ struct ieee80211_local { + }; + + static inline struct ieee80211_sub_if_data * +-IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) ++IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) + { + return netdev_priv(dev); + } +--- a/net/mac80211/iface.c ++++ b/net/mac80211/iface.c +@@ -822,6 +822,66 @@ static const struct net_device_ops ieee8 + + }; + ++#if LINUX_VERSION_IS_GEQ(5,10,0) ++static int ieee80211_netdev_fill_forward_path(struct net_device_path_ctx *ctx, ++ struct net_device_path *path) ++{ ++ struct ieee80211_sub_if_data *sdata; ++ struct ieee80211_local *local; ++ struct sta_info *sta; ++ int ret = -ENOENT; ++ ++ sdata = IEEE80211_DEV_TO_SUB_IF(ctx->dev); ++ local = sdata->local; ++ ++ if (!local->ops->net_fill_forward_path) ++ return -EOPNOTSUPP; ++ ++ rcu_read_lock(); ++ switch (sdata->vif.type) { ++ case NL80211_IFTYPE_AP_VLAN: ++ sta = rcu_dereference(sdata->u.vlan.sta); ++ if (sta) ++ break; ++ if (sdata->wdev.use_4addr) ++ goto out; ++ if (is_multicast_ether_addr(ctx->daddr)) ++ goto out; ++ sta = sta_info_get_bss(sdata, ctx->daddr); ++ break; ++ case NL80211_IFTYPE_AP: ++ if (is_multicast_ether_addr(ctx->daddr)) ++ goto out; ++ sta = sta_info_get(sdata, ctx->daddr); ++ break; ++ case NL80211_IFTYPE_STATION: ++ if (sdata->wdev.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) { ++ sta = sta_info_get(sdata, ctx->daddr); ++ if (sta && test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { ++ if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH)) ++ goto out; ++ ++ break; ++ } ++ } ++ ++ sta = sta_info_get(sdata, sdata->u.mgd.bssid); ++ break; ++ default: ++ goto out; ++ } ++ ++ if (!sta) ++ goto out; ++ ++ ret = drv_net_fill_forward_path(local, sdata, &sta->sta, ctx, path); ++out: ++ rcu_read_unlock(); ++ ++ return ret; ++} ++#endif ++ + static const struct net_device_ops ieee80211_dataif_8023_ops = { + #if LINUX_VERSION_IS_LESS(4,10,0) + .ndo_change_mtu = __change_mtu, +@@ -839,7 +899,9 @@ static const struct net_device_ops ieee8 + #else + .ndo_get_stats64 = bp_ieee80211_get_stats64, + #endif +- ++#if LINUX_VERSION_IS_GEQ(5,10,0) ++ .ndo_fill_forward_path = ieee80211_netdev_fill_forward_path, ++#endif + }; + + static bool ieee80211_iftype_supports_hdr_offload(enum nl80211_iftype iftype) +--- a/net/mac80211/trace.h ++++ b/net/mac80211/trace.h +@@ -2892,6 +2892,13 @@ TRACE_EVENT(drv_twt_teardown_request, + ) + ); + ++DEFINE_EVENT(sta_event, drv_net_fill_forward_path, ++ TP_PROTO(struct ieee80211_local *local, ++ struct ieee80211_sub_if_data *sdata, ++ struct ieee80211_sta *sta), ++ TP_ARGS(local, sdata, sta) ++); ++ + #endif /* !__MAC80211_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */ + + #undef TRACE_INCLUDE_PATH diff --git a/package/kernel/mac80211/patches/subsys/309-mac80211-minstrel_ht-fix-MINSTREL_FRAC-macro.patch b/package/kernel/mac80211/patches/subsys/309-mac80211-minstrel_ht-fix-MINSTREL_FRAC-macro.patch new file mode 100644 index 0000000000..0d475b7329 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/309-mac80211-minstrel_ht-fix-MINSTREL_FRAC-macro.patch @@ -0,0 +1,21 @@ +From: Felix Fietkau +Date: Wed, 28 Apr 2021 21:03:13 +0200 +Subject: [PATCH] mac80211: minstrel_ht: fix MINSTREL_FRAC macro + +Add missing braces to avoid issues with e.g. using additions in the +div expression + +Signed-off-by: Felix Fietkau +--- + +--- a/net/mac80211/rc80211_minstrel_ht.h ++++ b/net/mac80211/rc80211_minstrel_ht.h +@@ -14,7 +14,7 @@ + + /* scaled fraction values */ + #define MINSTREL_SCALE 12 +-#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div) ++#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / (div)) + #define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE) + + #define EWMA_LEVEL 96 /* ewma weighting factor [/EWMA_DIV] */ diff --git a/package/kernel/mac80211/patches/subsys/309-mac80211-send-ADDBA-requests-using-the-tid-queue-of-.patch b/package/kernel/mac80211/patches/subsys/309-mac80211-send-ADDBA-requests-using-the-tid-queue-of-.patch deleted file mode 100644 index 1c213289c5..0000000000 --- a/package/kernel/mac80211/patches/subsys/309-mac80211-send-ADDBA-requests-using-the-tid-queue-of-.patch +++ /dev/null @@ -1,28 +0,0 @@ -From: Felix Fietkau -Date: Thu, 2 Dec 2021 13:30:05 +0100 -Subject: [PATCH] mac80211: send ADDBA requests using the tid/queue of the - aggregation session - -Sending them out on a different queue can cause a race condition where a -number of packets in the queue may be discarded by the receiver, because -the ADDBA request is sent too early. -This affects any driver with software A-MPDU setup which does not allocate -packet seqno in hardware on tx, regardless of whether iTXQ is used or not. -The only driver I've seen that explicitly deals with this issue internally -is mwl8k. - -Cc: stable@vger.kernel.org -Signed-off-by: Felix Fietkau ---- - ---- a/net/mac80211/agg-tx.c -+++ b/net/mac80211/agg-tx.c -@@ -106,7 +106,7 @@ static void ieee80211_send_addba_request - mgmt->u.action.u.addba_req.start_seq_num = - cpu_to_le16(start_seq_num << 4); - -- ieee80211_tx_skb(sdata, skb); -+ ieee80211_tx_skb_tid(sdata, skb, tid); - } - - void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn) diff --git a/package/kernel/mac80211/patches/subsys/310-mac80211-agg-tx-don-t-schedule_and_wake_txq-under-st.patch b/package/kernel/mac80211/patches/subsys/310-mac80211-agg-tx-don-t-schedule_and_wake_txq-under-st.patch deleted file mode 100644 index 008ee49cfb..0000000000 --- a/package/kernel/mac80211/patches/subsys/310-mac80211-agg-tx-don-t-schedule_and_wake_txq-under-st.patch +++ /dev/null @@ -1,79 +0,0 @@ -From: Johannes Berg -Date: Mon, 29 Nov 2021 15:32:47 +0200 -Subject: [PATCH] mac80211: agg-tx: don't schedule_and_wake_txq() under - sta->lock - -When we call ieee80211_agg_start_txq(), that will in turn call -schedule_and_wake_txq(). Called from ieee80211_stop_tx_ba_cb() -this is done under sta->lock, which leads to certain circular -lock dependencies, as reported by Chris Murphy: -https://lore.kernel.org/r/CAJCQCtSXJ5qA4bqSPY=oLRMbv-irihVvP7A2uGutEbXQVkoNaw@mail.gmail.com - -In general, ieee80211_agg_start_txq() is usually not called -with sta->lock held, only in this one place. But it's always -called with sta->ampdu_mlme.mtx held, and that's therefore -clearly sufficient. - -Change ieee80211_stop_tx_ba_cb() to also call it without the -sta->lock held, by factoring it out of ieee80211_remove_tid_tx() -(which is only called in this one place). - -This breaks the locking chain and makes it less likely that -we'll have similar locking chain problems in the future. - -Reported-by: Chris Murphy -Signed-off-by: Johannes Berg -Signed-off-by: Luca Coelho ---- - ---- a/net/mac80211/agg-tx.c -+++ b/net/mac80211/agg-tx.c -@@ -9,7 +9,7 @@ - * Copyright 2007, Michael Wu - * Copyright 2007-2010, Intel Corporation - * Copyright(c) 2015-2017 Intel Deutschland GmbH -- * Copyright (C) 2018 - 2020 Intel Corporation -+ * Copyright (C) 2018 - 2021 Intel Corporation - */ - - #include -@@ -213,6 +213,8 @@ ieee80211_agg_start_txq(struct sta_info - struct ieee80211_txq *txq = sta->sta.txq[tid]; - struct txq_info *txqi; - -+ lockdep_assert_held(&sta->ampdu_mlme.mtx); -+ - if (!txq) - return; - -@@ -290,7 +292,6 @@ static void ieee80211_remove_tid_tx(stru - ieee80211_assign_tid_tx(sta, tid, NULL); - - ieee80211_agg_splice_finish(sta->sdata, tid); -- ieee80211_agg_start_txq(sta, tid, false); - - kfree_rcu(tid_tx, rcu_head); - } -@@ -889,6 +890,7 @@ void ieee80211_stop_tx_ba_cb(struct sta_ - { - struct ieee80211_sub_if_data *sdata = sta->sdata; - bool send_delba = false; -+ bool start_txq = false; - - ht_dbg(sdata, "Stopping Tx BA session for %pM tid %d\n", - sta->sta.addr, tid); -@@ -906,10 +908,14 @@ void ieee80211_stop_tx_ba_cb(struct sta_ - send_delba = true; - - ieee80211_remove_tid_tx(sta, tid); -+ start_txq = true; - - unlock_sta: - spin_unlock_bh(&sta->lock); - -+ if (start_txq) -+ ieee80211_agg_start_txq(sta, tid, false); -+ - if (send_delba) - ieee80211_send_delba(sdata, sta->sta.addr, tid, - WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); diff --git a/package/kernel/mac80211/patches/subsys/310-mac80211-minstrel_ht-reduce-fluctuations-in-rate-pro.patch b/package/kernel/mac80211/patches/subsys/310-mac80211-minstrel_ht-reduce-fluctuations-in-rate-pro.patch new file mode 100644 index 0000000000..16bcbc2ef9 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/310-mac80211-minstrel_ht-reduce-fluctuations-in-rate-pro.patch @@ -0,0 +1,30 @@ +From: Felix Fietkau +Date: Sat, 6 Feb 2021 16:08:01 +0100 +Subject: [PATCH] mac80211: minstrel_ht: reduce fluctuations in rate + probability stats + +In some scenarios when there is a lot of fluctuation in packet error rates, +rate switching can be amplified when the statistics get skewed by time slots +with very few tries. +Make the input data to the moving average more smooth by adding the +success/attempts count from the last stats window as well. This has the +advantage of smoothing the data without introducing any extra lag to sampling +rates. +This significantly improves rate stability on a strong test link subjected to +periodic noise bursts generated with a SDR + +Signed-off-by: Felix Fietkau +--- + +--- a/net/mac80211/rc80211_minstrel_ht.c ++++ b/net/mac80211/rc80211_minstrel_ht.c +@@ -700,7 +700,8 @@ minstrel_ht_calc_rate_stats(struct minst + unsigned int cur_prob; + + if (unlikely(mrs->attempts > 0)) { +- cur_prob = MINSTREL_FRAC(mrs->success, mrs->attempts); ++ cur_prob = MINSTREL_FRAC(mrs->success + mrs->last_success, ++ mrs->attempts + mrs->last_attempts); + minstrel_filter_avg_add(&mrs->prob_avg, + &mrs->prob_avg_1, cur_prob); + mrs->att_hist += mrs->attempts; diff --git a/package/kernel/mac80211/patches/subsys/311-mac80211-minstrel_ht-rework-rate-downgrade-code-and-.patch b/package/kernel/mac80211/patches/subsys/311-mac80211-minstrel_ht-rework-rate-downgrade-code-and-.patch new file mode 100644 index 0000000000..a6817bd4a6 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/311-mac80211-minstrel_ht-rework-rate-downgrade-code-and-.patch @@ -0,0 +1,151 @@ +From: Felix Fietkau +Date: Sat, 6 Feb 2021 16:33:14 +0100 +Subject: [PATCH] mac80211: minstrel_ht: rework rate downgrade code and + max_prob rate selection + +The current fallback code for fast rate switching on potentially failing rates +is triggering too often if there is some strong noise on the channel. This can +lead to wild fluctuations in the rate selection. +Additionally, switching down to max_prob_rate can create a significant gap down +in throughput, especially when using only 2 spatial streams, because max_prob_rate +is limited to using fewer streams than the max_tp rates. +In order to improve throughput without reducing reliability too much, use the +rate downgrade code for the max_prob_rate only, and allow the non-downgraded +max_prob_rate to use as many spatial streams as the max_tp rates + +Signed-off-by: Felix Fietkau +--- + +--- a/net/mac80211/rc80211_minstrel_ht.c ++++ b/net/mac80211/rc80211_minstrel_ht.c +@@ -511,6 +511,14 @@ minstrel_ht_set_best_prob_rate(struct mi + int cur_tp_avg, cur_group, cur_idx; + int max_gpr_group, max_gpr_idx; + int max_gpr_tp_avg, max_gpr_prob; ++ int min_dur; ++ ++ min_dur = max(minstrel_get_duration(mi->max_tp_rate[0]), ++ minstrel_get_duration(mi->max_tp_rate[1])); ++ ++ /* make the rate at least 18% slower than max tp rates */ ++ if (minstrel_get_duration(index) <= min_dur * 19 / 16) ++ return; + + cur_group = MI_RATE_GROUP(index); + cur_idx = MI_RATE_IDX(index); +@@ -532,11 +540,6 @@ minstrel_ht_set_best_prob_rate(struct mi + !minstrel_ht_is_legacy_group(max_tp_group)) + return; + +- /* skip rates faster than max tp rate with lower prob */ +- if (minstrel_get_duration(mi->max_tp_rate[0]) > minstrel_get_duration(index) && +- mrs->prob_avg < max_tp_prob) +- return; +- + max_gpr_group = MI_RATE_GROUP(mg->max_group_prob_rate); + max_gpr_idx = MI_RATE_IDX(mg->max_group_prob_rate); + max_gpr_prob = mi->groups[max_gpr_group].rates[max_gpr_idx].prob_avg; +@@ -594,40 +597,6 @@ minstrel_ht_assign_best_tp_rates(struct + + } + +-/* +- * Try to increase robustness of max_prob rate by decrease number of +- * streams if possible. +- */ +-static inline void +-minstrel_ht_prob_rate_reduce_streams(struct minstrel_ht_sta *mi) +-{ +- struct minstrel_mcs_group_data *mg; +- int tmp_max_streams, group, tmp_idx, tmp_prob; +- int tmp_tp = 0; +- +- if (!mi->sta->ht_cap.ht_supported) +- return; +- +- group = MI_RATE_GROUP(mi->max_tp_rate[0]); +- tmp_max_streams = minstrel_mcs_groups[group].streams; +- for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) { +- mg = &mi->groups[group]; +- if (!mi->supported[group] || group == MINSTREL_CCK_GROUP) +- continue; +- +- tmp_idx = MI_RATE_IDX(mg->max_group_prob_rate); +- tmp_prob = mi->groups[group].rates[tmp_idx].prob_avg; +- +- if (tmp_tp < minstrel_ht_get_tp_avg(mi, group, tmp_idx, tmp_prob) && +- (minstrel_mcs_groups[group].streams < tmp_max_streams)) { +- mi->max_prob_rate = mg->max_group_prob_rate; +- tmp_tp = minstrel_ht_get_tp_avg(mi, group, +- tmp_idx, +- tmp_prob); +- } +- } +-} +- + static u16 + __minstrel_ht_get_sample_rate(struct minstrel_ht_sta *mi, + enum minstrel_sample_type type) +@@ -1107,8 +1076,6 @@ minstrel_ht_update_stats(struct minstrel + + mi->max_prob_rate = tmp_max_prob_rate; + +- /* Try to increase robustness of max_prob_rate*/ +- minstrel_ht_prob_rate_reduce_streams(mi); + minstrel_ht_refill_sample_rates(mi); + + #ifdef CPTCFG_MAC80211_DEBUGFS +@@ -1153,7 +1120,7 @@ minstrel_ht_txstat_valid(struct minstrel + } + + static void +-minstrel_downgrade_rate(struct minstrel_ht_sta *mi, u16 *idx, bool primary) ++minstrel_downgrade_prob_rate(struct minstrel_ht_sta *mi, u16 *idx) + { + int group, orig_group; + +@@ -1168,11 +1135,7 @@ minstrel_downgrade_rate(struct minstrel_ + minstrel_mcs_groups[orig_group].streams) + continue; + +- if (primary) +- *idx = mi->groups[group].max_group_tp_rate[0]; +- else +- *idx = mi->groups[group].max_group_tp_rate[1]; +- break; ++ *idx = mi->groups[group].max_group_prob_rate; + } + } + +@@ -1183,7 +1146,7 @@ minstrel_ht_tx_status(void *priv, struct + struct ieee80211_tx_info *info = st->info; + struct minstrel_ht_sta *mi = priv_sta; + struct ieee80211_tx_rate *ar = info->status.rates; +- struct minstrel_rate_stats *rate, *rate2; ++ struct minstrel_rate_stats *rate; + struct minstrel_priv *mp = priv; + u32 update_interval = mp->update_interval; + bool last, update = false; +@@ -1233,18 +1196,13 @@ minstrel_ht_tx_status(void *priv, struct + /* + * check for sudden death of spatial multiplexing, + * downgrade to a lower number of streams if necessary. ++ * only do this for the max_prob_rate to prevent spurious ++ * rate fluctuations when the link changes suddenly + */ +- rate = minstrel_get_ratestats(mi, mi->max_tp_rate[0]); ++ rate = minstrel_get_ratestats(mi, mi->max_prob_rate); + if (rate->attempts > 30 && + rate->success < rate->attempts / 4) { +- minstrel_downgrade_rate(mi, &mi->max_tp_rate[0], true); +- update = true; +- } +- +- rate2 = minstrel_get_ratestats(mi, mi->max_tp_rate[1]); +- if (rate2->attempts > 30 && +- rate2->success < rate2->attempts / 4) { +- minstrel_downgrade_rate(mi, &mi->max_tp_rate[1], false); ++ minstrel_downgrade_prob_rate(mi, &mi->max_prob_rate); + update = true; + } + } diff --git a/package/kernel/mac80211/patches/subsys/311-mac80211-use-coarse-boottime-for-airtime-fairness-co.patch b/package/kernel/mac80211/patches/subsys/311-mac80211-use-coarse-boottime-for-airtime-fairness-co.patch deleted file mode 100644 index c43cd3acb9..0000000000 --- a/package/kernel/mac80211/patches/subsys/311-mac80211-use-coarse-boottime-for-airtime-fairness-co.patch +++ /dev/null @@ -1,60 +0,0 @@ -From: Felix Fietkau -Date: Tue, 14 Dec 2021 17:53:12 +0100 -Subject: [PATCH] mac80211: use coarse boottime for airtime fairness code - -The time values used by the airtime fairness code only need to be accurate -enough to cover station activity detection. -Using ktime_get_coarse_boottime_ns instead of ktime_get_boottime_ns will -drop the accuracy down to jiffies intervals, but at the same time saves -a lot of CPU cycles in a hot path - -Signed-off-by: Felix Fietkau ---- - ---- a/net/mac80211/tx.c -+++ b/net/mac80211/tx.c -@@ -3820,7 +3820,7 @@ struct ieee80211_txq *ieee80211_next_txq - { - struct ieee80211_local *local = hw_to_local(hw); - struct airtime_sched_info *air_sched; -- u64 now = ktime_get_boottime_ns(); -+ u64 now = ktime_get_coarse_boottime_ns(); - struct ieee80211_txq *ret = NULL; - struct airtime_info *air_info; - struct txq_info *txqi = NULL; -@@ -3947,7 +3947,7 @@ void ieee80211_update_airtime_weight(str - u64 weight_sum = 0; - - if (unlikely(!now)) -- now = ktime_get_boottime_ns(); -+ now = ktime_get_coarse_boottime_ns(); - - lockdep_assert_held(&air_sched->lock); - -@@ -3973,7 +3973,7 @@ void ieee80211_schedule_txq(struct ieee8 - struct ieee80211_local *local = hw_to_local(hw); - struct txq_info *txqi = to_txq_info(txq); - struct airtime_sched_info *air_sched; -- u64 now = ktime_get_boottime_ns(); -+ u64 now = ktime_get_coarse_boottime_ns(); - struct airtime_info *air_info; - u8 ac = txq->ac; - bool was_active; -@@ -4031,7 +4031,7 @@ static void __ieee80211_unschedule_txq(s - - if (!purge) - airtime_set_active(air_sched, air_info, -- ktime_get_boottime_ns()); -+ ktime_get_coarse_boottime_ns()); - - rb_erase_cached(&txqi->schedule_order, - &air_sched->active_txqs); -@@ -4119,7 +4119,7 @@ bool ieee80211_txq_may_transmit(struct i - if (RB_EMPTY_NODE(&txqi->schedule_order)) - goto out; - -- now = ktime_get_boottime_ns(); -+ now = ktime_get_coarse_boottime_ns(); - - /* Like in ieee80211_next_txq(), make sure the first station in the - * scheduling order is eligible for transmission to avoid starvation. diff --git a/package/kernel/mac80211/patches/subsys/321-mac80211_hwsim-make-6-GHz-channels-usable.patch b/package/kernel/mac80211/patches/subsys/321-mac80211_hwsim-make-6-GHz-channels-usable.patch deleted file mode 100644 index 9c7417e5fc..0000000000 --- a/package/kernel/mac80211/patches/subsys/321-mac80211_hwsim-make-6-GHz-channels-usable.patch +++ /dev/null @@ -1,74 +0,0 @@ -From: Felix Fietkau -Date: Mon, 24 May 2021 11:46:09 +0200 -Subject: [PATCH] mac80211_hwsim: make 6 GHz channels usable - -The previous commit that claimed to add 6 GHz channels didn't actually make -them usable, since the 6 GHz band was not registered with mac80211. - -Fixes: 28881922abd7 ("mac80211_hwsim: add 6GHz channels") -Signed-off-by: Felix Fietkau ---- - ---- a/drivers/net/wireless/mac80211_hwsim.c -+++ b/drivers/net/wireless/mac80211_hwsim.c -@@ -2992,15 +2992,19 @@ static void mac80211_hwsim_he_capab(stru - { - u16 n_iftype_data; - -- if (sband->band == NL80211_BAND_2GHZ) { -+ switch (sband->band) { -+ case NL80211_BAND_2GHZ: - n_iftype_data = ARRAY_SIZE(he_capa_2ghz); - sband->iftype_data = - (struct ieee80211_sband_iftype_data *)he_capa_2ghz; -- } else if (sband->band == NL80211_BAND_5GHZ) { -+ break; -+ case NL80211_BAND_5GHZ: -+ case NL80211_BAND_6GHZ: - n_iftype_data = ARRAY_SIZE(he_capa_5ghz); - sband->iftype_data = - (struct ieee80211_sband_iftype_data *)he_capa_5ghz; -- } else { -+ break; -+ default: - return; - } - -@@ -3290,6 +3294,12 @@ static int mac80211_hwsim_new_radio(stru - sband->vht_cap.vht_mcs.tx_mcs_map = - sband->vht_cap.vht_mcs.rx_mcs_map; - break; -+ case NL80211_BAND_6GHZ: -+ sband->channels = data->channels_6ghz; -+ sband->n_channels = ARRAY_SIZE(hwsim_channels_6ghz); -+ sband->bitrates = data->rates + 4; -+ sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4; -+ break; - case NL80211_BAND_S1GHZ: - memcpy(&sband->s1g_cap, &hwsim_s1g_cap, - sizeof(sband->s1g_cap)); -@@ -3300,6 +3310,13 @@ static int mac80211_hwsim_new_radio(stru - continue; - } - -+ mac80211_hwsim_he_capab(sband); -+ -+ hw->wiphy->bands[band] = sband; -+ -+ if (band == NL80211_BAND_6GHZ) -+ continue; -+ - sband->ht_cap.ht_supported = true; - sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | - IEEE80211_HT_CAP_GRN_FLD | -@@ -3313,10 +3330,6 @@ static int mac80211_hwsim_new_radio(stru - sband->ht_cap.mcs.rx_mask[0] = 0xff; - sband->ht_cap.mcs.rx_mask[1] = 0xff; - sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; -- -- mac80211_hwsim_he_capab(sband); -- -- hw->wiphy->bands[band] = sband; - } - - /* By default all radios belong to the first group */ diff --git a/package/kernel/mac80211/patches/subsys/330-mac80211-add-support-for-.ndo_fill_forward_path.patch b/package/kernel/mac80211/patches/subsys/330-mac80211-add-support-for-.ndo_fill_forward_path.patch deleted file mode 100644 index 7764edfb27..0000000000 --- a/package/kernel/mac80211/patches/subsys/330-mac80211-add-support-for-.ndo_fill_forward_path.patch +++ /dev/null @@ -1,172 +0,0 @@ -From: Felix Fietkau -Date: Fri, 12 Nov 2021 12:22:23 +0100 -Subject: [PATCH] mac80211: add support for .ndo_fill_forward_path - -This allows drivers to provide a destination device + info for flow offload -Only supported in combination with 802.3 encap offload - -Signed-off-by: Felix Fietkau -Tested-by: Lorenzo Bianconi -Link: https://lore.kernel.org/r/20211112112223.1209-1-nbd@nbd.name -Signed-off-by: Johannes Berg ---- - ---- a/include/net/mac80211.h -+++ b/include/net/mac80211.h -@@ -3937,6 +3937,8 @@ struct ieee80211_prep_tx_info { - * twt structure. - * @twt_teardown_request: Update the hw with TWT teardown request received - * from the peer. -+ * @net_fill_forward_path: Called from .ndo_fill_forward_path in order to -+ * resolve a path for hardware flow offloading - */ - struct ieee80211_ops { - void (*tx)(struct ieee80211_hw *hw, -@@ -4265,6 +4267,11 @@ struct ieee80211_ops { - struct ieee80211_twt_setup *twt); - void (*twt_teardown_request)(struct ieee80211_hw *hw, - struct ieee80211_sta *sta, u8 flowid); -+ int (*net_fill_forward_path)(struct ieee80211_hw *hw, -+ struct ieee80211_vif *vif, -+ struct ieee80211_sta *sta, -+ struct net_device_path_ctx *ctx, -+ struct net_device_path *path); - }; - - /** ---- a/net/mac80211/driver-ops.h -+++ b/net/mac80211/driver-ops.h -@@ -1483,4 +1483,26 @@ static inline void drv_twt_teardown_requ - trace_drv_return_void(local); - } - -+static inline int drv_net_fill_forward_path(struct ieee80211_local *local, -+ struct ieee80211_sub_if_data *sdata, -+ struct ieee80211_sta *sta, -+ struct net_device_path_ctx *ctx, -+ struct net_device_path *path) -+{ -+ int ret = -EOPNOTSUPP; -+ -+ sdata = get_bss_sdata(sdata); -+ if (!check_sdata_in_driver(sdata)) -+ return -EIO; -+ -+ trace_drv_net_fill_forward_path(local, sdata, sta); -+ if (local->ops->net_fill_forward_path) -+ ret = local->ops->net_fill_forward_path(&local->hw, -+ &sdata->vif, sta, -+ ctx, path); -+ trace_drv_return_int(local, ret); -+ -+ return ret; -+} -+ - #endif /* __MAC80211_DRIVER_OPS */ ---- a/net/mac80211/ieee80211_i.h -+++ b/net/mac80211/ieee80211_i.h -@@ -1465,7 +1465,7 @@ struct ieee80211_local { - }; - - static inline struct ieee80211_sub_if_data * --IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) -+IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) - { - return netdev_priv(dev); - } ---- a/net/mac80211/iface.c -+++ b/net/mac80211/iface.c -@@ -822,6 +822,66 @@ static const struct net_device_ops ieee8 - - }; - -+#if LINUX_VERSION_IS_GEQ(5,10,0) -+static int ieee80211_netdev_fill_forward_path(struct net_device_path_ctx *ctx, -+ struct net_device_path *path) -+{ -+ struct ieee80211_sub_if_data *sdata; -+ struct ieee80211_local *local; -+ struct sta_info *sta; -+ int ret = -ENOENT; -+ -+ sdata = IEEE80211_DEV_TO_SUB_IF(ctx->dev); -+ local = sdata->local; -+ -+ if (!local->ops->net_fill_forward_path) -+ return -EOPNOTSUPP; -+ -+ rcu_read_lock(); -+ switch (sdata->vif.type) { -+ case NL80211_IFTYPE_AP_VLAN: -+ sta = rcu_dereference(sdata->u.vlan.sta); -+ if (sta) -+ break; -+ if (sdata->wdev.use_4addr) -+ goto out; -+ if (is_multicast_ether_addr(ctx->daddr)) -+ goto out; -+ sta = sta_info_get_bss(sdata, ctx->daddr); -+ break; -+ case NL80211_IFTYPE_AP: -+ if (is_multicast_ether_addr(ctx->daddr)) -+ goto out; -+ sta = sta_info_get(sdata, ctx->daddr); -+ break; -+ case NL80211_IFTYPE_STATION: -+ if (sdata->wdev.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) { -+ sta = sta_info_get(sdata, ctx->daddr); -+ if (sta && test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { -+ if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH)) -+ goto out; -+ -+ break; -+ } -+ } -+ -+ sta = sta_info_get(sdata, sdata->u.mgd.bssid); -+ break; -+ default: -+ goto out; -+ } -+ -+ if (!sta) -+ goto out; -+ -+ ret = drv_net_fill_forward_path(local, sdata, &sta->sta, ctx, path); -+out: -+ rcu_read_unlock(); -+ -+ return ret; -+} -+#endif -+ - static const struct net_device_ops ieee80211_dataif_8023_ops = { - #if LINUX_VERSION_IS_LESS(4,10,0) - .ndo_change_mtu = __change_mtu, -@@ -839,7 +899,9 @@ static const struct net_device_ops ieee8 - #else - .ndo_get_stats64 = bp_ieee80211_get_stats64, - #endif -- -+#if LINUX_VERSION_IS_GEQ(5,10,0) -+ .ndo_fill_forward_path = ieee80211_netdev_fill_forward_path, -+#endif - }; - - static bool ieee80211_iftype_supports_hdr_offload(enum nl80211_iftype iftype) ---- a/net/mac80211/trace.h -+++ b/net/mac80211/trace.h -@@ -2892,6 +2892,13 @@ TRACE_EVENT(drv_twt_teardown_request, - ) - ); - -+DEFINE_EVENT(sta_event, drv_net_fill_forward_path, -+ TP_PROTO(struct ieee80211_local *local, -+ struct ieee80211_sub_if_data *sdata, -+ struct ieee80211_sta *sta), -+ TP_ARGS(local, sdata, sta) -+); -+ - #endif /* !__MAC80211_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */ - - #undef TRACE_INCLUDE_PATH diff --git a/package/kernel/mac80211/patches/subsys/353-mac80211-minstrel_ht-fix-MINSTREL_FRAC-macro.patch b/package/kernel/mac80211/patches/subsys/353-mac80211-minstrel_ht-fix-MINSTREL_FRAC-macro.patch deleted file mode 100644 index 0d475b7329..0000000000 --- a/package/kernel/mac80211/patches/subsys/353-mac80211-minstrel_ht-fix-MINSTREL_FRAC-macro.patch +++ /dev/null @@ -1,21 +0,0 @@ -From: Felix Fietkau -Date: Wed, 28 Apr 2021 21:03:13 +0200 -Subject: [PATCH] mac80211: minstrel_ht: fix MINSTREL_FRAC macro - -Add missing braces to avoid issues with e.g. using additions in the -div expression - -Signed-off-by: Felix Fietkau ---- - ---- a/net/mac80211/rc80211_minstrel_ht.h -+++ b/net/mac80211/rc80211_minstrel_ht.h -@@ -14,7 +14,7 @@ - - /* scaled fraction values */ - #define MINSTREL_SCALE 12 --#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div) -+#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / (div)) - #define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE) - - #define EWMA_LEVEL 96 /* ewma weighting factor [/EWMA_DIV] */ diff --git a/package/kernel/mac80211/patches/subsys/354-mac80211-minstrel_ht-reduce-fluctuations-in-rate-pro.patch b/package/kernel/mac80211/patches/subsys/354-mac80211-minstrel_ht-reduce-fluctuations-in-rate-pro.patch deleted file mode 100644 index 16bcbc2ef9..0000000000 --- a/package/kernel/mac80211/patches/subsys/354-mac80211-minstrel_ht-reduce-fluctuations-in-rate-pro.patch +++ /dev/null @@ -1,30 +0,0 @@ -From: Felix Fietkau -Date: Sat, 6 Feb 2021 16:08:01 +0100 -Subject: [PATCH] mac80211: minstrel_ht: reduce fluctuations in rate - probability stats - -In some scenarios when there is a lot of fluctuation in packet error rates, -rate switching can be amplified when the statistics get skewed by time slots -with very few tries. -Make the input data to the moving average more smooth by adding the -success/attempts count from the last stats window as well. This has the -advantage of smoothing the data without introducing any extra lag to sampling -rates. -This significantly improves rate stability on a strong test link subjected to -periodic noise bursts generated with a SDR - -Signed-off-by: Felix Fietkau ---- - ---- a/net/mac80211/rc80211_minstrel_ht.c -+++ b/net/mac80211/rc80211_minstrel_ht.c -@@ -700,7 +700,8 @@ minstrel_ht_calc_rate_stats(struct minst - unsigned int cur_prob; - - if (unlikely(mrs->attempts > 0)) { -- cur_prob = MINSTREL_FRAC(mrs->success, mrs->attempts); -+ cur_prob = MINSTREL_FRAC(mrs->success + mrs->last_success, -+ mrs->attempts + mrs->last_attempts); - minstrel_filter_avg_add(&mrs->prob_avg, - &mrs->prob_avg_1, cur_prob); - mrs->att_hist += mrs->attempts; diff --git a/package/kernel/mac80211/patches/subsys/355-mac80211-minstrel_ht-rework-rate-downgrade-code-and-.patch b/package/kernel/mac80211/patches/subsys/355-mac80211-minstrel_ht-rework-rate-downgrade-code-and-.patch deleted file mode 100644 index a6817bd4a6..0000000000 --- a/package/kernel/mac80211/patches/subsys/355-mac80211-minstrel_ht-rework-rate-downgrade-code-and-.patch +++ /dev/null @@ -1,151 +0,0 @@ -From: Felix Fietkau -Date: Sat, 6 Feb 2021 16:33:14 +0100 -Subject: [PATCH] mac80211: minstrel_ht: rework rate downgrade code and - max_prob rate selection - -The current fallback code for fast rate switching on potentially failing rates -is triggering too often if there is some strong noise on the channel. This can -lead to wild fluctuations in the rate selection. -Additionally, switching down to max_prob_rate can create a significant gap down -in throughput, especially when using only 2 spatial streams, because max_prob_rate -is limited to using fewer streams than the max_tp rates. -In order to improve throughput without reducing reliability too much, use the -rate downgrade code for the max_prob_rate only, and allow the non-downgraded -max_prob_rate to use as many spatial streams as the max_tp rates - -Signed-off-by: Felix Fietkau ---- - ---- a/net/mac80211/rc80211_minstrel_ht.c -+++ b/net/mac80211/rc80211_minstrel_ht.c -@@ -511,6 +511,14 @@ minstrel_ht_set_best_prob_rate(struct mi - int cur_tp_avg, cur_group, cur_idx; - int max_gpr_group, max_gpr_idx; - int max_gpr_tp_avg, max_gpr_prob; -+ int min_dur; -+ -+ min_dur = max(minstrel_get_duration(mi->max_tp_rate[0]), -+ minstrel_get_duration(mi->max_tp_rate[1])); -+ -+ /* make the rate at least 18% slower than max tp rates */ -+ if (minstrel_get_duration(index) <= min_dur * 19 / 16) -+ return; - - cur_group = MI_RATE_GROUP(index); - cur_idx = MI_RATE_IDX(index); -@@ -532,11 +540,6 @@ minstrel_ht_set_best_prob_rate(struct mi - !minstrel_ht_is_legacy_group(max_tp_group)) - return; - -- /* skip rates faster than max tp rate with lower prob */ -- if (minstrel_get_duration(mi->max_tp_rate[0]) > minstrel_get_duration(index) && -- mrs->prob_avg < max_tp_prob) -- return; -- - max_gpr_group = MI_RATE_GROUP(mg->max_group_prob_rate); - max_gpr_idx = MI_RATE_IDX(mg->max_group_prob_rate); - max_gpr_prob = mi->groups[max_gpr_group].rates[max_gpr_idx].prob_avg; -@@ -594,40 +597,6 @@ minstrel_ht_assign_best_tp_rates(struct - - } - --/* -- * Try to increase robustness of max_prob rate by decrease number of -- * streams if possible. -- */ --static inline void --minstrel_ht_prob_rate_reduce_streams(struct minstrel_ht_sta *mi) --{ -- struct minstrel_mcs_group_data *mg; -- int tmp_max_streams, group, tmp_idx, tmp_prob; -- int tmp_tp = 0; -- -- if (!mi->sta->ht_cap.ht_supported) -- return; -- -- group = MI_RATE_GROUP(mi->max_tp_rate[0]); -- tmp_max_streams = minstrel_mcs_groups[group].streams; -- for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) { -- mg = &mi->groups[group]; -- if (!mi->supported[group] || group == MINSTREL_CCK_GROUP) -- continue; -- -- tmp_idx = MI_RATE_IDX(mg->max_group_prob_rate); -- tmp_prob = mi->groups[group].rates[tmp_idx].prob_avg; -- -- if (tmp_tp < minstrel_ht_get_tp_avg(mi, group, tmp_idx, tmp_prob) && -- (minstrel_mcs_groups[group].streams < tmp_max_streams)) { -- mi->max_prob_rate = mg->max_group_prob_rate; -- tmp_tp = minstrel_ht_get_tp_avg(mi, group, -- tmp_idx, -- tmp_prob); -- } -- } --} -- - static u16 - __minstrel_ht_get_sample_rate(struct minstrel_ht_sta *mi, - enum minstrel_sample_type type) -@@ -1107,8 +1076,6 @@ minstrel_ht_update_stats(struct minstrel - - mi->max_prob_rate = tmp_max_prob_rate; - -- /* Try to increase robustness of max_prob_rate*/ -- minstrel_ht_prob_rate_reduce_streams(mi); - minstrel_ht_refill_sample_rates(mi); - - #ifdef CPTCFG_MAC80211_DEBUGFS -@@ -1153,7 +1120,7 @@ minstrel_ht_txstat_valid(struct minstrel - } - - static void --minstrel_downgrade_rate(struct minstrel_ht_sta *mi, u16 *idx, bool primary) -+minstrel_downgrade_prob_rate(struct minstrel_ht_sta *mi, u16 *idx) - { - int group, orig_group; - -@@ -1168,11 +1135,7 @@ minstrel_downgrade_rate(struct minstrel_ - minstrel_mcs_groups[orig_group].streams) - continue; - -- if (primary) -- *idx = mi->groups[group].max_group_tp_rate[0]; -- else -- *idx = mi->groups[group].max_group_tp_rate[1]; -- break; -+ *idx = mi->groups[group].max_group_prob_rate; - } - } - -@@ -1183,7 +1146,7 @@ minstrel_ht_tx_status(void *priv, struct - struct ieee80211_tx_info *info = st->info; - struct minstrel_ht_sta *mi = priv_sta; - struct ieee80211_tx_rate *ar = info->status.rates; -- struct minstrel_rate_stats *rate, *rate2; -+ struct minstrel_rate_stats *rate; - struct minstrel_priv *mp = priv; - u32 update_interval = mp->update_interval; - bool last, update = false; -@@ -1233,18 +1196,13 @@ minstrel_ht_tx_status(void *priv, struct - /* - * check for sudden death of spatial multiplexing, - * downgrade to a lower number of streams if necessary. -+ * only do this for the max_prob_rate to prevent spurious -+ * rate fluctuations when the link changes suddenly - */ -- rate = minstrel_get_ratestats(mi, mi->max_tp_rate[0]); -+ rate = minstrel_get_ratestats(mi, mi->max_prob_rate); - if (rate->attempts > 30 && - rate->success < rate->attempts / 4) { -- minstrel_downgrade_rate(mi, &mi->max_tp_rate[0], true); -- update = true; -- } -- -- rate2 = minstrel_get_ratestats(mi, mi->max_tp_rate[1]); -- if (rate2->attempts > 30 && -- rate2->success < rate2->attempts / 4) { -- minstrel_downgrade_rate(mi, &mi->max_tp_rate[1], false); -+ minstrel_downgrade_prob_rate(mi, &mi->max_prob_rate); - update = true; - } - }