diff options
Diffstat (limited to 'package/kernel/mac80211/patches/subsys/309-mac80211-Import-airtime-calculation-code-from-mt76.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/309-mac80211-Import-airtime-calculation-code-from-mt76.patch | 690 |
1 files changed, 0 insertions, 690 deletions
diff --git a/package/kernel/mac80211/patches/subsys/309-mac80211-Import-airtime-calculation-code-from-mt76.patch b/package/kernel/mac80211/patches/subsys/309-mac80211-Import-airtime-calculation-code-from-mt76.patch deleted file mode 100644 index 7f049b8d0c..0000000000 --- a/package/kernel/mac80211/patches/subsys/309-mac80211-Import-airtime-calculation-code-from-mt76.patch +++ /dev/null @@ -1,690 +0,0 @@ -From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@redhat.com> -Date: Mon, 18 Nov 2019 22:06:08 -0800 -Subject: [PATCH] mac80211: Import airtime calculation code from mt76 -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Felix recently added code to calculate airtime of packets to the mt76 -driver. Import this into mac80211 so we can use it for airtime queue limit -calculations. - -The airtime.c file is copied verbatim from the mt76 driver, and adjusted to -be usable in mac80211. This involves: - -- Switching to mac80211 data structures. -- Adding support for 160 MHz channels and HE mode. -- Moving the symbol and duration calculations around a bit to avoid - rounding with the higher rates and longer symbol times used for HE rates. - -The per-rate TX rate calculation is also split out to its own function so -it can be used directly for the AQL calculations later. - -Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> -Link: https://lore.kernel.org/r/20191119060610.76681-3-kyan@google.com -[fix HE_GROUP_IDX() to use 3 * bw, since there are 3 _gi values] -Signed-off-by: Johannes Berg <johannes.berg@intel.com> ---- - create mode 100644 net/mac80211/airtime.c - ---- a/include/net/mac80211.h -+++ b/include/net/mac80211.h -@@ -6419,4 +6419,33 @@ void ieee80211_nan_func_match(struct iee - struct cfg80211_nan_match_params *match, - gfp_t gfp); - -+/** -+ * ieee80211_calc_rx_airtime - calculate estimated transmission airtime for RX. -+ * -+ * This function calculates the estimated airtime usage of a frame based on the -+ * rate information in the RX status struct and the frame length. -+ * -+ * @hw: pointer as obtained from ieee80211_alloc_hw() -+ * @status: &struct ieee80211_rx_status containing the transmission rate -+ * information. -+ * @len: frame length in bytes -+ */ -+u32 ieee80211_calc_rx_airtime(struct ieee80211_hw *hw, -+ struct ieee80211_rx_status *status, -+ int len); -+ -+/** -+ * ieee80211_calc_tx_airtime - calculate estimated transmission airtime for TX. -+ * -+ * This function calculates the estimated airtime usage of a frame based on the -+ * rate information in the TX info struct and the frame length. -+ * -+ * @hw: pointer as obtained from ieee80211_alloc_hw() -+ * @info: &struct ieee80211_tx_info of the frame. -+ * @len: frame length in bytes -+ */ -+u32 ieee80211_calc_tx_airtime(struct ieee80211_hw *hw, -+ struct ieee80211_tx_info *info, -+ int len); -+ - #endif /* MAC80211_H */ ---- a/net/mac80211/Makefile -+++ b/net/mac80211/Makefile -@@ -31,7 +31,8 @@ mac80211-y := \ - chan.o \ - trace.o mlme.o \ - tdls.o \ -- ocb.o -+ ocb.o \ -+ airtime.o - - mac80211-$(CPTCFG_MAC80211_LEDS) += led.o - mac80211-$(CPTCFG_MAC80211_DEBUGFS) += \ ---- /dev/null -+++ b/net/mac80211/airtime.c -@@ -0,0 +1,597 @@ -+// SPDX-License-Identifier: ISC -+/* -+ * Copyright (C) 2019 Felix Fietkau <nbd@nbd.name> -+ */ -+ -+#include <net/mac80211.h> -+#include "ieee80211_i.h" -+#include "sta_info.h" -+ -+#define AVG_PKT_SIZE 1024 -+ -+/* Number of bits for an average sized packet */ -+#define MCS_NBITS (AVG_PKT_SIZE << 3) -+ -+/* Number of kilo-symbols (symbols * 1024) for a packet with (bps) bits per -+ * symbol. We use k-symbols to avoid rounding in the _TIME macros below. -+ */ -+#define MCS_N_KSYMS(bps) DIV_ROUND_UP(MCS_NBITS << 10, (bps)) -+ -+/* Transmission time (in 1024 * usec) for a packet containing (ksyms) * 1024 -+ * symbols. -+ */ -+#define MCS_SYMBOL_TIME(sgi, ksyms) \ -+ (sgi ? \ -+ ((ksyms) * 4 * 18) / 20 : /* 3.6 us per sym */ \ -+ ((ksyms) * 4) /* 4.0 us per sym */ \ -+ ) -+ -+/* Transmit duration for the raw data part of an average sized packet */ -+#define MCS_DURATION(streams, sgi, bps) \ -+ ((u32)MCS_SYMBOL_TIME(sgi, MCS_N_KSYMS((streams) * (bps)))) -+ -+#define MCS_DURATION_S(shift, streams, sgi, bps) \ -+ ((u16)((MCS_DURATION(streams, sgi, bps) >> shift))) -+ -+/* These should match the values in enum nl80211_he_gi */ -+#define HE_GI_08 0 -+#define HE_GI_16 1 -+#define HE_GI_32 2 -+ -+/* Transmission time (1024 usec) for a packet containing (ksyms) * k-symbols */ -+#define HE_SYMBOL_TIME(gi, ksyms) \ -+ (gi == HE_GI_08 ? \ -+ ((ksyms) * 16 * 17) / 20 : /* 13.6 us per sym */ \ -+ (gi == HE_GI_16 ? \ -+ ((ksyms) * 16 * 18) / 20 : /* 14.4 us per sym */ \ -+ ((ksyms) * 16) /* 16.0 us per sym */ \ -+ )) -+ -+/* Transmit duration for the raw data part of an average sized packet */ -+#define HE_DURATION(streams, gi, bps) \ -+ ((u32)HE_SYMBOL_TIME(gi, MCS_N_KSYMS((streams) * (bps)))) -+ -+#define HE_DURATION_S(shift, streams, gi, bps) \ -+ (HE_DURATION(streams, gi, bps) >> shift) -+ -+#define BW_20 0 -+#define BW_40 1 -+#define BW_80 2 -+#define BW_160 3 -+ -+/* -+ * Define group sort order: HT40 -> SGI -> #streams -+ */ -+#define IEEE80211_MAX_STREAMS 4 -+#define IEEE80211_HT_STREAM_GROUPS 4 /* BW(=2) * SGI(=2) */ -+#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_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_GROUPS_NB (IEEE80211_HT_GROUPS_NB + \ -+ IEEE80211_VHT_GROUPS_NB + \ -+ IEEE80211_HE_GROUPS_NB) -+ -+#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 MCS_GROUP_RATES 12 -+ -+#define HT_GROUP_IDX(_streams, _sgi, _ht40) \ -+ IEEE80211_HT_GROUP_0 + \ -+ IEEE80211_MAX_STREAMS * 2 * _ht40 + \ -+ IEEE80211_MAX_STREAMS * _sgi + \ -+ _streams - 1 -+ -+#define _MAX(a, b) (((a)>(b))?(a):(b)) -+ -+#define GROUP_SHIFT(duration) \ -+ _MAX(0, 16 - __builtin_clz(duration)) -+ -+/* MCS rate information for an MCS group */ -+#define __MCS_GROUP(_streams, _sgi, _ht40, _s) \ -+ [HT_GROUP_IDX(_streams, _sgi, _ht40)] = { \ -+ .shift = _s, \ -+ .duration = { \ -+ MCS_DURATION_S(_s, _streams, _sgi, _ht40 ? 54 : 26), \ -+ MCS_DURATION_S(_s, _streams, _sgi, _ht40 ? 108 : 52), \ -+ MCS_DURATION_S(_s, _streams, _sgi, _ht40 ? 162 : 78), \ -+ MCS_DURATION_S(_s, _streams, _sgi, _ht40 ? 216 : 104), \ -+ MCS_DURATION_S(_s, _streams, _sgi, _ht40 ? 324 : 156), \ -+ MCS_DURATION_S(_s, _streams, _sgi, _ht40 ? 432 : 208), \ -+ MCS_DURATION_S(_s, _streams, _sgi, _ht40 ? 486 : 234), \ -+ MCS_DURATION_S(_s, _streams, _sgi, _ht40 ? 540 : 260) \ -+ } \ -+} -+ -+#define MCS_GROUP_SHIFT(_streams, _sgi, _ht40) \ -+ GROUP_SHIFT(MCS_DURATION(_streams, _sgi, _ht40 ? 54 : 26)) -+ -+#define MCS_GROUP(_streams, _sgi, _ht40) \ -+ __MCS_GROUP(_streams, _sgi, _ht40, \ -+ MCS_GROUP_SHIFT(_streams, _sgi, _ht40)) -+ -+#define VHT_GROUP_IDX(_streams, _sgi, _bw) \ -+ (IEEE80211_VHT_GROUP_0 + \ -+ IEEE80211_MAX_STREAMS * 2 * (_bw) + \ -+ IEEE80211_MAX_STREAMS * (_sgi) + \ -+ (_streams) - 1) -+ -+#define BW2VBPS(_bw, r4, r3, r2, r1) \ -+ (_bw == BW_160 ? r4 : _bw == BW_80 ? r3 : _bw == BW_40 ? r2 : r1) -+ -+#define __VHT_GROUP(_streams, _sgi, _bw, _s) \ -+ [VHT_GROUP_IDX(_streams, _sgi, _bw)] = { \ -+ .shift = _s, \ -+ .duration = { \ -+ MCS_DURATION_S(_s, _streams, _sgi, \ -+ BW2VBPS(_bw, 234, 117, 54, 26)), \ -+ MCS_DURATION_S(_s, _streams, _sgi, \ -+ BW2VBPS(_bw, 468, 234, 108, 52)), \ -+ MCS_DURATION_S(_s, _streams, _sgi, \ -+ BW2VBPS(_bw, 702, 351, 162, 78)), \ -+ MCS_DURATION_S(_s, _streams, _sgi, \ -+ BW2VBPS(_bw, 936, 468, 216, 104)), \ -+ MCS_DURATION_S(_s, _streams, _sgi, \ -+ BW2VBPS(_bw, 1404, 702, 324, 156)), \ -+ MCS_DURATION_S(_s, _streams, _sgi, \ -+ BW2VBPS(_bw, 1872, 936, 432, 208)), \ -+ MCS_DURATION_S(_s, _streams, _sgi, \ -+ BW2VBPS(_bw, 2106, 1053, 486, 234)), \ -+ MCS_DURATION_S(_s, _streams, _sgi, \ -+ BW2VBPS(_bw, 2340, 1170, 540, 260)), \ -+ MCS_DURATION_S(_s, _streams, _sgi, \ -+ BW2VBPS(_bw, 2808, 1404, 648, 312)), \ -+ MCS_DURATION_S(_s, _streams, _sgi, \ -+ BW2VBPS(_bw, 3120, 1560, 720, 346)) \ -+ } \ -+} -+ -+#define VHT_GROUP_SHIFT(_streams, _sgi, _bw) \ -+ GROUP_SHIFT(MCS_DURATION(_streams, _sgi, \ -+ BW2VBPS(_bw, 243, 117, 54, 26))) -+ -+#define VHT_GROUP(_streams, _sgi, _bw) \ -+ __VHT_GROUP(_streams, _sgi, _bw, \ -+ VHT_GROUP_SHIFT(_streams, _sgi, _bw)) -+ -+ -+#define HE_GROUP_IDX(_streams, _gi, _bw) \ -+ (IEEE80211_HE_GROUP_0 + \ -+ IEEE80211_HE_MAX_STREAMS * 3 * (_bw) + \ -+ IEEE80211_HE_MAX_STREAMS * (_gi) + \ -+ (_streams) - 1) -+ -+#define __HE_GROUP(_streams, _gi, _bw, _s) \ -+ [HE_GROUP_IDX(_streams, _gi, _bw)] = { \ -+ .shift = _s, \ -+ .duration = { \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 979, 489, 230, 115)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 1958, 979, 475, 230)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 2937, 1468, 705, 345)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 3916, 1958, 936, 475)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 5875, 2937, 1411, 705)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 7833, 3916, 1872, 936)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 8827, 4406, 2102, 1051)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 9806, 4896, 2347, 1166)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 11764, 5875, 2808, 1411)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 13060, 6523, 3124, 1555)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 14702, 7344, 3513, 1756)), \ -+ HE_DURATION_S(_s, _streams, _gi, \ -+ BW2VBPS(_bw, 16329, 8164, 3902, 1944)) \ -+ } \ -+} -+ -+#define HE_GROUP_SHIFT(_streams, _gi, _bw) \ -+ GROUP_SHIFT(HE_DURATION(_streams, _gi, \ -+ BW2VBPS(_bw, 979, 489, 230, 115))) -+ -+#define HE_GROUP(_streams, _gi, _bw) \ -+ __HE_GROUP(_streams, _gi, _bw, \ -+ HE_GROUP_SHIFT(_streams, _gi, _bw)) -+struct mcs_group { -+ u8 shift; -+ u16 duration[MCS_GROUP_RATES]; -+}; -+ -+static const struct mcs_group airtime_mcs_groups[] = { -+ MCS_GROUP(1, 0, BW_20), -+ MCS_GROUP(2, 0, BW_20), -+ MCS_GROUP(3, 0, BW_20), -+ MCS_GROUP(4, 0, BW_20), -+ -+ MCS_GROUP(1, 1, BW_20), -+ MCS_GROUP(2, 1, BW_20), -+ MCS_GROUP(3, 1, BW_20), -+ MCS_GROUP(4, 1, BW_20), -+ -+ MCS_GROUP(1, 0, BW_40), -+ MCS_GROUP(2, 0, BW_40), -+ MCS_GROUP(3, 0, BW_40), -+ MCS_GROUP(4, 0, BW_40), -+ -+ MCS_GROUP(1, 1, BW_40), -+ MCS_GROUP(2, 1, BW_40), -+ MCS_GROUP(3, 1, BW_40), -+ MCS_GROUP(4, 1, BW_40), -+ -+ VHT_GROUP(1, 0, BW_20), -+ VHT_GROUP(2, 0, BW_20), -+ VHT_GROUP(3, 0, BW_20), -+ VHT_GROUP(4, 0, BW_20), -+ -+ VHT_GROUP(1, 1, BW_20), -+ VHT_GROUP(2, 1, BW_20), -+ VHT_GROUP(3, 1, BW_20), -+ VHT_GROUP(4, 1, BW_20), -+ -+ VHT_GROUP(1, 0, BW_40), -+ VHT_GROUP(2, 0, BW_40), -+ VHT_GROUP(3, 0, BW_40), -+ VHT_GROUP(4, 0, BW_40), -+ -+ VHT_GROUP(1, 1, BW_40), -+ VHT_GROUP(2, 1, BW_40), -+ VHT_GROUP(3, 1, BW_40), -+ VHT_GROUP(4, 1, BW_40), -+ -+ VHT_GROUP(1, 0, BW_80), -+ VHT_GROUP(2, 0, BW_80), -+ VHT_GROUP(3, 0, BW_80), -+ VHT_GROUP(4, 0, BW_80), -+ -+ VHT_GROUP(1, 1, BW_80), -+ VHT_GROUP(2, 1, BW_80), -+ VHT_GROUP(3, 1, BW_80), -+ VHT_GROUP(4, 1, BW_80), -+ -+ VHT_GROUP(1, 0, BW_160), -+ VHT_GROUP(2, 0, BW_160), -+ VHT_GROUP(3, 0, BW_160), -+ VHT_GROUP(4, 0, BW_160), -+ -+ VHT_GROUP(1, 1, BW_160), -+ VHT_GROUP(2, 1, BW_160), -+ VHT_GROUP(3, 1, BW_160), -+ VHT_GROUP(4, 1, BW_160), -+ -+ HE_GROUP(1, HE_GI_08, BW_20), -+ HE_GROUP(2, HE_GI_08, BW_20), -+ HE_GROUP(3, HE_GI_08, BW_20), -+ HE_GROUP(4, HE_GI_08, BW_20), -+ HE_GROUP(5, HE_GI_08, BW_20), -+ HE_GROUP(6, HE_GI_08, BW_20), -+ HE_GROUP(7, HE_GI_08, BW_20), -+ HE_GROUP(8, HE_GI_08, BW_20), -+ -+ HE_GROUP(1, HE_GI_16, BW_20), -+ HE_GROUP(2, HE_GI_16, BW_20), -+ HE_GROUP(3, HE_GI_16, BW_20), -+ HE_GROUP(4, HE_GI_16, BW_20), -+ HE_GROUP(5, HE_GI_16, BW_20), -+ HE_GROUP(6, HE_GI_16, BW_20), -+ HE_GROUP(7, HE_GI_16, BW_20), -+ HE_GROUP(8, HE_GI_16, BW_20), -+ -+ HE_GROUP(1, HE_GI_32, BW_20), -+ HE_GROUP(2, HE_GI_32, BW_20), -+ HE_GROUP(3, HE_GI_32, BW_20), -+ HE_GROUP(4, HE_GI_32, BW_20), -+ HE_GROUP(5, HE_GI_32, BW_20), -+ HE_GROUP(6, HE_GI_32, BW_20), -+ HE_GROUP(7, HE_GI_32, BW_20), -+ HE_GROUP(8, HE_GI_32, BW_20), -+ -+ HE_GROUP(1, HE_GI_08, BW_40), -+ HE_GROUP(2, HE_GI_08, BW_40), -+ HE_GROUP(3, HE_GI_08, BW_40), -+ HE_GROUP(4, HE_GI_08, BW_40), -+ HE_GROUP(5, HE_GI_08, BW_40), -+ HE_GROUP(6, HE_GI_08, BW_40), -+ HE_GROUP(7, HE_GI_08, BW_40), -+ HE_GROUP(8, HE_GI_08, BW_40), -+ -+ HE_GROUP(1, HE_GI_16, BW_40), -+ HE_GROUP(2, HE_GI_16, BW_40), -+ HE_GROUP(3, HE_GI_16, BW_40), -+ HE_GROUP(4, HE_GI_16, BW_40), -+ HE_GROUP(5, HE_GI_16, BW_40), -+ HE_GROUP(6, HE_GI_16, BW_40), -+ HE_GROUP(7, HE_GI_16, BW_40), -+ HE_GROUP(8, HE_GI_16, BW_40), -+ -+ HE_GROUP(1, HE_GI_32, BW_40), -+ HE_GROUP(2, HE_GI_32, BW_40), -+ HE_GROUP(3, HE_GI_32, BW_40), -+ HE_GROUP(4, HE_GI_32, BW_40), -+ HE_GROUP(5, HE_GI_32, BW_40), -+ HE_GROUP(6, HE_GI_32, BW_40), -+ HE_GROUP(7, HE_GI_32, BW_40), -+ HE_GROUP(8, HE_GI_32, BW_40), -+ -+ HE_GROUP(1, HE_GI_08, BW_80), -+ HE_GROUP(2, HE_GI_08, BW_80), -+ HE_GROUP(3, HE_GI_08, BW_80), -+ HE_GROUP(4, HE_GI_08, BW_80), -+ HE_GROUP(5, HE_GI_08, BW_80), -+ HE_GROUP(6, HE_GI_08, BW_80), -+ HE_GROUP(7, HE_GI_08, BW_80), -+ HE_GROUP(8, HE_GI_08, BW_80), -+ -+ HE_GROUP(1, HE_GI_16, BW_80), -+ HE_GROUP(2, HE_GI_16, BW_80), -+ HE_GROUP(3, HE_GI_16, BW_80), -+ HE_GROUP(4, HE_GI_16, BW_80), -+ HE_GROUP(5, HE_GI_16, BW_80), -+ HE_GROUP(6, HE_GI_16, BW_80), -+ HE_GROUP(7, HE_GI_16, BW_80), -+ HE_GROUP(8, HE_GI_16, BW_80), -+ -+ HE_GROUP(1, HE_GI_32, BW_80), -+ HE_GROUP(2, HE_GI_32, BW_80), -+ HE_GROUP(3, HE_GI_32, BW_80), -+ HE_GROUP(4, HE_GI_32, BW_80), -+ HE_GROUP(5, HE_GI_32, BW_80), -+ HE_GROUP(6, HE_GI_32, BW_80), -+ HE_GROUP(7, HE_GI_32, BW_80), -+ HE_GROUP(8, HE_GI_32, BW_80), -+ -+ HE_GROUP(1, HE_GI_08, BW_160), -+ HE_GROUP(2, HE_GI_08, BW_160), -+ HE_GROUP(3, HE_GI_08, BW_160), -+ HE_GROUP(4, HE_GI_08, BW_160), -+ HE_GROUP(5, HE_GI_08, BW_160), -+ HE_GROUP(6, HE_GI_08, BW_160), -+ HE_GROUP(7, HE_GI_08, BW_160), -+ HE_GROUP(8, HE_GI_08, BW_160), -+ -+ HE_GROUP(1, HE_GI_16, BW_160), -+ HE_GROUP(2, HE_GI_16, BW_160), -+ HE_GROUP(3, HE_GI_16, BW_160), -+ HE_GROUP(4, HE_GI_16, BW_160), -+ HE_GROUP(5, HE_GI_16, BW_160), -+ HE_GROUP(6, HE_GI_16, BW_160), -+ HE_GROUP(7, HE_GI_16, BW_160), -+ HE_GROUP(8, HE_GI_16, BW_160), -+ -+ HE_GROUP(1, HE_GI_32, BW_160), -+ HE_GROUP(2, HE_GI_32, BW_160), -+ HE_GROUP(3, HE_GI_32, BW_160), -+ HE_GROUP(4, HE_GI_32, BW_160), -+ HE_GROUP(5, HE_GI_32, BW_160), -+ HE_GROUP(6, HE_GI_32, BW_160), -+ HE_GROUP(7, HE_GI_32, BW_160), -+ HE_GROUP(8, HE_GI_32, BW_160), -+}; -+ -+static u32 -+ieee80211_calc_legacy_rate_duration(u16 bitrate, bool short_pre, -+ bool cck, int len) -+{ -+ u32 duration; -+ -+ if (cck) { -+ duration = 144 + 48; /* preamble + PLCP */ -+ if (short_pre) -+ duration >>= 1; -+ -+ duration += 10; /* SIFS */ -+ } else { -+ duration = 20 + 16; /* premable + SIFS */ -+ } -+ -+ len <<= 3; -+ duration += (len * 10) / bitrate; -+ -+ return duration; -+} -+ -+u32 ieee80211_calc_rx_airtime(struct ieee80211_hw *hw, -+ struct ieee80211_rx_status *status, -+ int len) -+{ -+ struct ieee80211_supported_band *sband; -+ const struct ieee80211_rate *rate; -+ bool sgi = status->enc_flags & RX_ENC_FLAG_SHORT_GI; -+ bool sp = status->enc_flags & RX_ENC_FLAG_SHORTPRE; -+ int bw, streams; -+ int group, idx; -+ u32 duration; -+ bool cck; -+ -+ switch (status->bw) { -+ case RATE_INFO_BW_20: -+ bw = BW_20; -+ break; -+ case RATE_INFO_BW_40: -+ bw = BW_40; -+ break; -+ case RATE_INFO_BW_80: -+ bw = BW_80; -+ break; -+ case RATE_INFO_BW_160: -+ bw = BW_160; -+ break; -+ default: -+ WARN_ON_ONCE(1); -+ return 0; -+ } -+ -+ switch (status->encoding) { -+ case RX_ENC_LEGACY: -+ if (WARN_ON_ONCE(status->band > NL80211_BAND_5GHZ)) -+ return 0; -+ -+ sband = hw->wiphy->bands[status->band]; -+ if (!sband || status->rate_idx > sband->n_bitrates) -+ return 0; -+ -+ rate = &sband->bitrates[status->rate_idx]; -+ cck = rate->flags & IEEE80211_RATE_MANDATORY_B; -+ -+ return ieee80211_calc_legacy_rate_duration(rate->bitrate, sp, -+ cck, len); -+ -+ case RX_ENC_VHT: -+ streams = status->nss; -+ idx = status->rate_idx; -+ group = VHT_GROUP_IDX(streams, sgi, bw); -+ break; -+ case RX_ENC_HT: -+ streams = ((status->rate_idx >> 3) & 3) + 1; -+ idx = status->rate_idx & 7; -+ group = HT_GROUP_IDX(streams, sgi, bw); -+ break; -+ case RX_ENC_HE: -+ streams = status->nss; -+ idx = status->rate_idx; -+ group = HE_GROUP_IDX(streams, status->he_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; -+ -+ duration = airtime_mcs_groups[group].duration[idx]; -+ duration <<= airtime_mcs_groups[group].shift; -+ duration *= len; -+ duration /= AVG_PKT_SIZE; -+ duration /= 1024; -+ -+ duration += 36 + (streams << 2); -+ -+ return duration; -+} -+EXPORT_SYMBOL_GPL(ieee80211_calc_rx_airtime); -+ -+static u32 ieee80211_calc_tx_airtime_rate(struct ieee80211_hw *hw, -+ struct ieee80211_tx_rate *rate, -+ u8 band, int len) -+{ -+ struct ieee80211_rx_status stat = { -+ .band = band, -+ }; -+ -+ if (rate->idx < 0 || !rate->count) -+ return 0; -+ -+ if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) -+ stat.bw = RATE_INFO_BW_80; -+ else if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) -+ stat.bw = RATE_INFO_BW_40; -+ else -+ stat.bw = RATE_INFO_BW_20; -+ -+ stat.enc_flags = 0; -+ if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) -+ stat.enc_flags |= RX_ENC_FLAG_SHORTPRE; -+ if (rate->flags & IEEE80211_TX_RC_SHORT_GI) -+ stat.enc_flags |= RX_ENC_FLAG_SHORT_GI; -+ -+ stat.rate_idx = rate->idx; -+ if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { -+ stat.encoding = RX_ENC_VHT; -+ stat.rate_idx = ieee80211_rate_get_vht_mcs(rate); -+ stat.nss = ieee80211_rate_get_vht_nss(rate); -+ } else if (rate->flags & IEEE80211_TX_RC_MCS) { -+ stat.encoding = RX_ENC_HT; -+ } else { -+ stat.encoding = RX_ENC_LEGACY; -+ } -+ -+ return ieee80211_calc_rx_airtime(hw, &stat, len); -+} -+ -+u32 ieee80211_calc_tx_airtime(struct ieee80211_hw *hw, -+ struct ieee80211_tx_info *info, -+ int len) -+{ -+ u32 duration = 0; -+ int i; -+ -+ for (i = 0; i < ARRAY_SIZE(info->status.rates); i++) { -+ struct ieee80211_tx_rate *rate = &info->status.rates[i]; -+ u32 cur_duration; -+ -+ cur_duration = ieee80211_calc_tx_airtime_rate(hw, rate, -+ info->band, len); -+ if (!cur_duration) -+ break; -+ -+ duration += cur_duration * rate->count; -+ } -+ -+ return duration; -+} -+EXPORT_SYMBOL_GPL(ieee80211_calc_tx_airtime); -+ -+u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, -+ struct ieee80211_vif *vif, -+ struct ieee80211_sta *pubsta, -+ int len) -+{ -+ struct ieee80211_supported_band *sband; -+ struct ieee80211_chanctx_conf *conf; -+ int rateidx, shift = 0; -+ bool cck, short_pream; -+ u32 basic_rates; -+ u8 band = 0; -+ u16 rate; -+ -+ len += 38; /* Ethernet header length */ -+ -+ conf = rcu_dereference(vif->chanctx_conf); -+ if (conf) { -+ band = conf->def.chan->band; -+ shift = ieee80211_chandef_get_shift(&conf->def); -+ } -+ -+ if (pubsta) { -+ struct sta_info *sta = container_of(pubsta, struct sta_info, -+ sta); -+ -+ return ieee80211_calc_tx_airtime_rate(hw, -+ &sta->tx_stats.last_rate, -+ band, len); -+ } -+ -+ if (!conf) -+ return 0; -+ -+ /* No station to get latest rate from, so calculate the worst-case -+ * duration using the lowest configured basic rate. -+ */ -+ sband = hw->wiphy->bands[band]; -+ -+ basic_rates = vif->bss_conf.basic_rates; -+ short_pream = vif->bss_conf.use_short_preamble; -+ -+ rateidx = basic_rates ? ffs(basic_rates) - 1 : 0; -+ rate = sband->bitrates[rateidx].bitrate << shift; -+ cck = sband->bitrates[rateidx].flags & IEEE80211_RATE_MANDATORY_B; -+ -+ return ieee80211_calc_legacy_rate_duration(rate, short_pream, cck, len); -+} ---- a/net/mac80211/ieee80211_i.h -+++ b/net/mac80211/ieee80211_i.h -@@ -2253,6 +2253,10 @@ const char *ieee80211_get_reason_code_st - - extern const struct ethtool_ops ieee80211_ethtool_ops; - -+u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, -+ struct ieee80211_vif *vif, -+ struct ieee80211_sta *pubsta, -+ int len); - #ifdef CPTCFG_MAC80211_NOINLINE - #define debug_noinline noinline - #else |