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mac80211: introduce EHT rate support in AQL airtime 

Backport required by mt76 for decent throughput with EHT rates

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2024-09-24 09:03:57 +02:00
parent 3b221ba5af
commit 1f4bd694aa
1 changed files with 233 additions and 0 deletions
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233
package/kernel/mac80211/patches/subsys/350-wifi-mac80211-introduce-EHT-rate-support-in-AQL-airt.patch Normal file
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@ -0,0 +1,233 @@
From: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Date: Wed, 4 Sep 2024 19:12:56 +0800
Subject: [PATCH] wifi: mac80211: introduce EHT rate support in AQL airtime
Add definitions related to EHT mode and airtime calculation
according to the 802.11BE_D4.0.
Co-developed-by: Bo Jiao <Bo.Jiao@mediatek.com>
Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Quan Zhou <quan.zhou@mediatek.com>
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Link: https://patch.msgid.link/20240904111256.11734-1-mingyen.hsieh@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/net/mac80211/airtime.c
+++ b/net/mac80211/airtime.c
@@ -55,10 +55,21 @@
#define HE_DURATION_S(shift, streams, gi, bps) \
(HE_DURATION(streams, gi, bps) >> shift)
+/* gi in HE/EHT is identical. It matches enum nl80211_eht_gi as well */
+#define EHT_GI_08 HE_GI_08
+#define EHT_GI_16 HE_GI_16
+#define EHT_GI_32 HE_GI_32
+
+#define EHT_DURATION(streams, gi, bps) \
+ HE_DURATION(streams, gi, bps)
+#define EHT_DURATION_S(shift, streams, gi, bps) \
+ HE_DURATION_S(shift, streams, gi, bps)
+
#define BW_20 0
#define BW_40 1
#define BW_80 2
#define BW_160 3
+#define BW_320 4
/*
* Define group sort order: HT40 -> SGI -> #streams
@@ -68,17 +79,26 @@
#define IEEE80211_VHT_STREAM_GROUPS 8 /* BW(=4) * SGI(=2) */
#define IEEE80211_HE_MAX_STREAMS 8
+#define IEEE80211_HE_STREAM_GROUPS 12 /* BW(=4) * GI(=3) */
+
+#define IEEE80211_EHT_MAX_STREAMS 8
+#define IEEE80211_EHT_STREAM_GROUPS 15 /* BW(=5) * GI(=3) */
#define IEEE80211_HT_GROUPS_NB (IEEE80211_MAX_STREAMS * \
IEEE80211_HT_STREAM_GROUPS)
#define IEEE80211_VHT_GROUPS_NB (IEEE80211_MAX_STREAMS * \
IEEE80211_VHT_STREAM_GROUPS)
+#define IEEE80211_HE_GROUPS_NB (IEEE80211_HE_MAX_STREAMS * \
+ IEEE80211_HE_STREAM_GROUPS)
+#define IEEE80211_EHT_GROUPS_NB (IEEE80211_EHT_MAX_STREAMS * \
+ IEEE80211_EHT_STREAM_GROUPS)
#define IEEE80211_HT_GROUP_0 0
#define IEEE80211_VHT_GROUP_0 (IEEE80211_HT_GROUP_0 + IEEE80211_HT_GROUPS_NB)
#define IEEE80211_HE_GROUP_0 (IEEE80211_VHT_GROUP_0 + IEEE80211_VHT_GROUPS_NB)
+#define IEEE80211_EHT_GROUP_0 (IEEE80211_HE_GROUP_0 + IEEE80211_HE_GROUPS_NB)
-#define MCS_GROUP_RATES 12
+#define MCS_GROUP_RATES 14
#define HT_GROUP_IDX(_streams, _sgi, _ht40) \
IEEE80211_HT_GROUP_0 + \
@@ -203,6 +223,69 @@
#define HE_GROUP(_streams, _gi, _bw) \
__HE_GROUP(_streams, _gi, _bw, \
HE_GROUP_SHIFT(_streams, _gi, _bw))
+
+#define EHT_BW2VBPS(_bw, r5, r4, r3, r2, r1) \
+ ((_bw) == BW_320 ? r5 : BW2VBPS(_bw, r4, r3, r2, r1))
+
+#define EHT_GROUP_IDX(_streams, _gi, _bw) \
+ (IEEE80211_EHT_GROUP_0 + \
+ IEEE80211_EHT_MAX_STREAMS * 3 * (_bw) + \
+ IEEE80211_EHT_MAX_STREAMS * (_gi) + \
+ (_streams) - 1)
+
+#define __EHT_GROUP(_streams, _gi, _bw, _s) \
+ [EHT_GROUP_IDX(_streams, _gi, _bw)] = { \
+ .shift = _s, \
+ .duration = { \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 1960, 980, 490, 234, 117)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 3920, 1960, 980, 468, 234)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 5880, 2937, 1470, 702, 351)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 7840, 3920, 1960, 936, 468)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 11760, 5880, 2940, 1404, 702)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 15680, 7840, 3920, 1872, 936)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 17640, 8820, 4410, 2106, 1053)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 19600, 9800, 4900, 2340, 1170)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 23520, 11760, 5880, 2808, 1404)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 26133, 13066, 6533, 3120, 1560)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 29400, 14700, 7350, 3510, 1755)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 32666, 16333, 8166, 3900, 1950)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 35280, 17640, 8820, 4212, 2106)), \
+ EHT_DURATION_S(_s, _streams, _gi, \
+ EHT_BW2VBPS(_bw, 39200, 19600, 9800, 4680, 2340)) \
+ } \
+}
+
+#define EHT_GROUP_SHIFT(_streams, _gi, _bw) \
+ GROUP_SHIFT(EHT_DURATION(_streams, _gi, \
+ EHT_BW2VBPS(_bw, 1960, 980, 490, 234, 117)))
+
+#define EHT_GROUP(_streams, _gi, _bw) \
+ __EHT_GROUP(_streams, _gi, _bw, \
+ EHT_GROUP_SHIFT(_streams, _gi, _bw))
+
+#define EHT_GROUP_RANGE(_gi, _bw) \
+ EHT_GROUP(1, _gi, _bw), \
+ EHT_GROUP(2, _gi, _bw), \
+ EHT_GROUP(3, _gi, _bw), \
+ EHT_GROUP(4, _gi, _bw), \
+ EHT_GROUP(5, _gi, _bw), \
+ EHT_GROUP(6, _gi, _bw), \
+ EHT_GROUP(7, _gi, _bw), \
+ EHT_GROUP(8, _gi, _bw)
+
struct mcs_group {
u8 shift;
u16 duration[MCS_GROUP_RATES];
@@ -376,6 +459,26 @@ static const struct mcs_group airtime_mc
HE_GROUP(6, HE_GI_32, BW_160),
HE_GROUP(7, HE_GI_32, BW_160),
HE_GROUP(8, HE_GI_32, BW_160),
+
+ EHT_GROUP_RANGE(EHT_GI_08, BW_20),
+ EHT_GROUP_RANGE(EHT_GI_16, BW_20),
+ EHT_GROUP_RANGE(EHT_GI_32, BW_20),
+
+ EHT_GROUP_RANGE(EHT_GI_08, BW_40),
+ EHT_GROUP_RANGE(EHT_GI_16, BW_40),
+ EHT_GROUP_RANGE(EHT_GI_32, BW_40),
+
+ EHT_GROUP_RANGE(EHT_GI_08, BW_80),
+ EHT_GROUP_RANGE(EHT_GI_16, BW_80),
+ EHT_GROUP_RANGE(EHT_GI_32, BW_80),
+
+ EHT_GROUP_RANGE(EHT_GI_08, BW_160),
+ EHT_GROUP_RANGE(EHT_GI_16, BW_160),
+ EHT_GROUP_RANGE(EHT_GI_32, BW_160),
+
+ EHT_GROUP_RANGE(EHT_GI_08, BW_320),
+ EHT_GROUP_RANGE(EHT_GI_16, BW_320),
+ EHT_GROUP_RANGE(EHT_GI_32, BW_320),
};
static u32
@@ -422,6 +525,9 @@ static u32 ieee80211_get_rate_duration(s
case RATE_INFO_BW_160:
bw = BW_160;
break;
+ case RATE_INFO_BW_320:
+ bw = BW_320;
+ break;
default:
WARN_ON_ONCE(1);
return 0;
@@ -443,14 +549,27 @@ static u32 ieee80211_get_rate_duration(s
idx = status->rate_idx;
group = HE_GROUP_IDX(streams, status->he_gi, bw);
break;
+ case RX_ENC_EHT:
+ streams = status->nss;
+ idx = status->rate_idx;
+ group = EHT_GROUP_IDX(streams, status->eht.gi, bw);
+ break;
default:
WARN_ON_ONCE(1);
return 0;
}
- if (WARN_ON_ONCE((status->encoding != RX_ENC_HE && streams > 4) ||
- (status->encoding == RX_ENC_HE && streams > 8)))
- return 0;
+ switch (status->encoding) {
+ case RX_ENC_EHT:
+ case RX_ENC_HE:
+ if (WARN_ON_ONCE(streams > 8))
+ return 0;
+ break;
+ default:
+ if (WARN_ON_ONCE(streams > 4))
+ return 0;
+ break;
+ }
if (idx >= MCS_GROUP_RATES)
return 0;
@@ -517,7 +636,9 @@ static bool ieee80211_fill_rate_info(str
stat->nss = ri->nss;
stat->rate_idx = ri->mcs;
- if (ri->flags & RATE_INFO_FLAGS_HE_MCS)
+ if (ri->flags & RATE_INFO_FLAGS_EHT_MCS)
+ stat->encoding = RX_ENC_EHT;
+ else if (ri->flags & RATE_INFO_FLAGS_HE_MCS)
stat->encoding = RX_ENC_HE;
else if (ri->flags & RATE_INFO_FLAGS_VHT_MCS)
stat->encoding = RX_ENC_VHT;
@@ -529,7 +650,14 @@ static bool ieee80211_fill_rate_info(str
if (ri->flags & RATE_INFO_FLAGS_SHORT_GI)
stat->enc_flags |= RX_ENC_FLAG_SHORT_GI;
- stat->he_gi = ri->he_gi;
+ switch (stat->encoding) {
+ case RX_ENC_EHT:
+ stat->eht.gi = ri->eht_gi;
+ break;
+ default:
+ stat->he_gi = ri->he_gi;
+ break;
+ }
if (stat->encoding != RX_ENC_LEGACY)
return true;