diff options
Diffstat (limited to 'package/kernel/mac80211/patches/subsys/312-mac80211-factor-out-code-to-look-up-the-average-pack.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/312-mac80211-factor-out-code-to-look-up-the-average-pack.patch | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/subsys/312-mac80211-factor-out-code-to-look-up-the-average-pack.patch b/package/kernel/mac80211/patches/subsys/312-mac80211-factor-out-code-to-look-up-the-average-pack.patch new file mode 100644 index 0000000000..105bbe2529 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/312-mac80211-factor-out-code-to-look-up-the-average-pack.patch @@ -0,0 +1,186 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Wed, 12 Aug 2020 17:06:12 +0200 +Subject: [PATCH] mac80211: factor out code to look up the average packet + length duration for a rate + +This will be used to enhance AQL estimated aggregation length + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/net/mac80211/airtime.c ++++ b/net/mac80211/airtime.c +@@ -405,18 +405,14 @@ ieee80211_calc_legacy_rate_duration(u16 + return duration; + } + +-u32 ieee80211_calc_rx_airtime(struct ieee80211_hw *hw, +- struct ieee80211_rx_status *status, +- int len) ++static u32 ieee80211_get_rate_duration(struct ieee80211_hw *hw, ++ struct ieee80211_rx_status *status, ++ u32 *overhead) + { +- 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: +@@ -437,20 +433,6 @@ u32 ieee80211_calc_rx_airtime(struct iee + } + + 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; +@@ -477,13 +459,47 @@ u32 ieee80211_calc_rx_airtime(struct iee + + duration = airtime_mcs_groups[group].duration[idx]; + duration <<= airtime_mcs_groups[group].shift; ++ *overhead = 36 + (streams << 2); ++ ++ return duration; ++} ++ ++ ++u32 ieee80211_calc_rx_airtime(struct ieee80211_hw *hw, ++ struct ieee80211_rx_status *status, ++ int len) ++{ ++ struct ieee80211_supported_band *sband; ++ u32 duration, overhead = 0; ++ ++ if (status->encoding == RX_ENC_LEGACY) { ++ const struct ieee80211_rate *rate; ++ bool sp = status->enc_flags & RX_ENC_FLAG_SHORTPRE; ++ bool cck; ++ ++ 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); ++ } ++ ++ duration = ieee80211_get_rate_duration(hw, status, &overhead); ++ if (!duration) ++ return 0; ++ + duration *= len; + duration /= AVG_PKT_SIZE; + duration /= 1024; + +- duration += 36 + (streams << 2); +- +- return duration; ++ return duration + overhead; + } + EXPORT_SYMBOL_GPL(ieee80211_calc_rx_airtime); + +@@ -530,46 +546,56 @@ static bool ieee80211_fill_rate_info(str + return false; + } + +-static u32 ieee80211_calc_tx_airtime_rate(struct ieee80211_hw *hw, +- struct ieee80211_tx_rate *rate, +- struct rate_info *ri, +- u8 band, int len) ++static int ieee80211_fill_rx_status(struct ieee80211_rx_status *stat, ++ struct ieee80211_hw *hw, ++ struct ieee80211_tx_rate *rate, ++ struct rate_info *ri, u8 band, int len) + { +- struct ieee80211_rx_status stat = { +- .band = band, +- }; ++ memset(stat, 0, sizeof(*stat)); ++ stat->band = band; + +- if (ieee80211_fill_rate_info(hw, &stat, band, ri)) +- goto out; ++ if (ieee80211_fill_rate_info(hw, stat, band, ri)) ++ return 0; + + if (rate->idx < 0 || !rate->count) +- return 0; ++ return -1; + + if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) +- stat.bw = RATE_INFO_BW_80; ++ stat->bw = RATE_INFO_BW_80; + else if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) +- stat.bw = RATE_INFO_BW_40; ++ stat->bw = RATE_INFO_BW_40; + else +- stat.bw = RATE_INFO_BW_20; ++ stat->bw = RATE_INFO_BW_20; + +- stat.enc_flags = 0; ++ stat->enc_flags = 0; + if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) +- stat.enc_flags |= RX_ENC_FLAG_SHORTPRE; ++ stat->enc_flags |= RX_ENC_FLAG_SHORTPRE; + if (rate->flags & IEEE80211_TX_RC_SHORT_GI) +- stat.enc_flags |= RX_ENC_FLAG_SHORT_GI; ++ stat->enc_flags |= RX_ENC_FLAG_SHORT_GI; + +- stat.rate_idx = rate->idx; ++ 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); ++ 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; ++ stat->encoding = RX_ENC_HT; + } else { +- stat.encoding = RX_ENC_LEGACY; ++ stat->encoding = RX_ENC_LEGACY; + } + +-out: ++ return 0; ++} ++ ++static u32 ieee80211_calc_tx_airtime_rate(struct ieee80211_hw *hw, ++ struct ieee80211_tx_rate *rate, ++ struct rate_info *ri, ++ u8 band, int len) ++{ ++ struct ieee80211_rx_status stat; ++ ++ ieee80211_fill_rx_status(&stat, hw, rate, ri, band, len); ++ + return ieee80211_calc_rx_airtime(hw, &stat, len); + } + |