ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/package/kernel/mac80211/patches/subsys/374-mac80211-move-A-MPDU-session-check-from-minstrel_ht-.patch b/package/kernel/mac80211/patches/subsys/374-mac80211-move-A-MPDU-session-check-from-minstrel_ht-.patch
new file mode 100644
index 0000000..bab8917
--- /dev/null
+++ b/package/kernel/mac80211/patches/subsys/374-mac80211-move-A-MPDU-session-check-from-minstrel_ht-.patch
@@ -0,0 +1,126 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Thu, 17 Jun 2021 17:56:54 +0200
+Subject: [PATCH] mac80211: move A-MPDU session check from minstrel_ht to
+ mac80211
+
+This avoids calling back into tx handlers from within the rate control module.
+Preparation for deferring rate control until tx dequeue
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -6160,6 +6160,11 @@ enum rate_control_capabilities {
+ * otherwise the NSS difference doesn't bother us.
+ */
+ RATE_CTRL_CAPA_VHT_EXT_NSS_BW = BIT(0),
++ /**
++ * @RATE_CTRL_CAPA_AMPDU_TRIGGER:
++ * mac80211 should start A-MPDU sessions on tx
++ */
++ RATE_CTRL_CAPA_AMPDU_TRIGGER = BIT(1),
+ };
+
+ struct rate_control_ops {
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -1144,29 +1144,6 @@ minstrel_downgrade_prob_rate(struct mins
+ }
+
+ static void
+-minstrel_aggr_check(struct ieee80211_sta *pubsta, struct sk_buff *skb)
+-{
+- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+- struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+- u16 tid;
+-
+- if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
+- return;
+-
+- if (unlikely(!ieee80211_is_data_qos(hdr->frame_control)))
+- return;
+-
+- if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE)))
+- return;
+-
+- tid = ieee80211_get_tid(hdr);
+- if (likely(sta->ampdu_mlme.tid_tx[tid]))
+- return;
+-
+- ieee80211_start_tx_ba_session(pubsta, tid, 0);
+-}
+-
+-static void
+ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
+ void *priv_sta, struct ieee80211_tx_status *st)
+ {
+@@ -1461,10 +1438,6 @@ minstrel_ht_get_rate(void *priv, struct
+ struct minstrel_priv *mp = priv;
+ u16 sample_idx;
+
+- if (!(info->flags & IEEE80211_TX_CTL_AMPDU) &&
+- !minstrel_ht_is_legacy_group(MI_RATE_GROUP(mi->max_prob_rate)))
+- minstrel_aggr_check(sta, txrc->skb);
+-
+ info->flags |= mi->tx_flags;
+
+ #ifdef CPTCFG_MAC80211_DEBUGFS
+@@ -1870,6 +1843,7 @@ static u32 minstrel_ht_get_expected_thro
+
+ static const struct rate_control_ops mac80211_minstrel_ht = {
+ .name = "minstrel_ht",
++ .capa = RATE_CTRL_CAPA_AMPDU_TRIGGER,
+ .tx_status_ext = minstrel_ht_tx_status,
+ .get_rate = minstrel_ht_get_rate,
+ .rate_init = minstrel_ht_rate_init,
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -3965,6 +3965,29 @@ void ieee80211_txq_schedule_start(struct
+ }
+ EXPORT_SYMBOL(ieee80211_txq_schedule_start);
+
++static void
++ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata,
++ struct sta_info *sta,
++ struct sk_buff *skb)
++{
++ struct rate_control_ref *ref = sdata->local->rate_ctrl;
++ u16 tid;
++
++ if (!ref || !(ref->ops->capa & RATE_CTRL_CAPA_AMPDU_TRIGGER))
++ return;
++
++ if (!sta || !sta->sta.ht_cap.ht_supported ||
++ !sta->sta.wme || skb_get_queue_mapping(skb) == IEEE80211_AC_VO ||
++ skb->protocol == sdata->control_port_protocol)
++ return;
++
++ tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
++ if (likely(sta->ampdu_mlme.tid_tx[tid]))
++ return;
++
++ ieee80211_start_tx_ba_session(&sta->sta, tid, 0);
++}
++
+ void __ieee80211_subif_start_xmit(struct sk_buff *skb,
+ struct net_device *dev,
+ u32 info_flags,
+@@ -3995,6 +4018,8 @@ void __ieee80211_subif_start_xmit(struct
+ skb_get_hash(skb);
+ }
+
++ ieee80211_aggr_check(sdata, sta, skb);
++
+ if (sta) {
+ struct ieee80211_fast_tx *fast_tx;
+
+@@ -4258,6 +4283,8 @@ static void ieee80211_8023_xmit(struct i
+
+ memset(info, 0, sizeof(*info));
+
++ ieee80211_aggr_check(sdata, sta, skb);
++
+ tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
+ tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
+ if (tid_tx) {