Lines Matching +full:duration +full:- +full:us
1 // SPDX-License-Identifier: ISC
4 * Copyright (C) 2021-2022 Intel Corporation
16 /* Number of kilo-symbols (symbols * 1024) for a packet with (bps) bits per
17 * symbol. We use k-symbols to avoid rounding in the _TIME macros below.
26 ((ksyms) * 4 * 18) / 20 : /* 3.6 us per sym */ \
27 ((ksyms) * 4) /* 4.0 us per sym */ \
30 /* Transmit duration for the raw data part of an average sized packet */
42 /* Transmission time (1024 usec) for a packet containing (ksyms) * k-symbols */
45 ((ksyms) * 16 * 17) / 20 : /* 13.6 us per sym */ \
47 ((ksyms) * 16 * 18) / 20 : /* 14.4 us per sym */ \
48 ((ksyms) * 16) /* 16.0 us per sym */ \
51 /* Transmit duration for the raw data part of an average sized packet */
64 * Define group sort order: HT40 -> SGI -> #streams
87 _streams - 1
91 #define GROUP_SHIFT(duration) \ argument
92 _MAX(0, 16 - __builtin_clz(duration))
98 .duration = { \
121 (_streams) - 1)
129 .duration = { \
166 (_streams) - 1)
171 .duration = { \
208 u16 duration[MCS_GROUP_RATES]; member
385 u32 duration; in ieee80211_calc_legacy_rate_duration() local
388 duration = 144 + 48; /* preamble + PLCP */ in ieee80211_calc_legacy_rate_duration()
390 duration >>= 1; in ieee80211_calc_legacy_rate_duration()
392 duration += 10; /* SIFS */ in ieee80211_calc_legacy_rate_duration()
394 duration = 20 + 16; /* premable + SIFS */ in ieee80211_calc_legacy_rate_duration()
398 duration += (len * 10) / bitrate; in ieee80211_calc_legacy_rate_duration()
400 return duration; in ieee80211_calc_legacy_rate_duration()
407 bool sgi = status->enc_flags & RX_ENC_FLAG_SHORT_GI; in ieee80211_get_rate_duration()
410 u32 duration; in ieee80211_get_rate_duration() local
412 switch (status->bw) { in ieee80211_get_rate_duration()
430 switch (status->encoding) { in ieee80211_get_rate_duration()
432 streams = status->nss; in ieee80211_get_rate_duration()
433 idx = status->rate_idx; in ieee80211_get_rate_duration()
437 streams = ((status->rate_idx >> 3) & 3) + 1; in ieee80211_get_rate_duration()
438 idx = status->rate_idx & 7; in ieee80211_get_rate_duration()
442 streams = status->nss; in ieee80211_get_rate_duration()
443 idx = status->rate_idx; in ieee80211_get_rate_duration()
444 group = HE_GROUP_IDX(streams, status->he_gi, bw); in ieee80211_get_rate_duration()
451 if (WARN_ON_ONCE((status->encoding != RX_ENC_HE && streams > 4) || in ieee80211_get_rate_duration()
452 (status->encoding == RX_ENC_HE && streams > 8))) in ieee80211_get_rate_duration()
458 duration = airtime_mcs_groups[group].duration[idx]; in ieee80211_get_rate_duration()
459 duration <<= airtime_mcs_groups[group].shift; in ieee80211_get_rate_duration()
462 return duration; in ieee80211_get_rate_duration()
471 u32 duration, overhead = 0; in ieee80211_calc_rx_airtime() local
473 if (status->encoding == RX_ENC_LEGACY) { in ieee80211_calc_rx_airtime()
475 bool sp = status->enc_flags & RX_ENC_FLAG_SHORTPRE; in ieee80211_calc_rx_airtime()
478 /* on 60GHz or sub-1GHz band, there are no legacy rates */ in ieee80211_calc_rx_airtime()
479 if (WARN_ON_ONCE(status->band == NL80211_BAND_60GHZ || in ieee80211_calc_rx_airtime()
480 status->band == NL80211_BAND_S1GHZ)) in ieee80211_calc_rx_airtime()
483 sband = hw->wiphy->bands[status->band]; in ieee80211_calc_rx_airtime()
484 if (!sband || status->rate_idx >= sband->n_bitrates) in ieee80211_calc_rx_airtime()
487 rate = &sband->bitrates[status->rate_idx]; in ieee80211_calc_rx_airtime()
488 cck = rate->flags & IEEE80211_RATE_MANDATORY_B; in ieee80211_calc_rx_airtime()
490 return ieee80211_calc_legacy_rate_duration(rate->bitrate, sp, in ieee80211_calc_rx_airtime()
494 duration = ieee80211_get_rate_duration(hw, status, &overhead); in ieee80211_calc_rx_airtime()
495 if (!duration) in ieee80211_calc_rx_airtime()
498 duration *= len; in ieee80211_calc_rx_airtime()
499 duration /= AVG_PKT_SIZE; in ieee80211_calc_rx_airtime()
500 duration /= 1024; in ieee80211_calc_rx_airtime()
502 return duration + overhead; in ieee80211_calc_rx_airtime()
510 struct ieee80211_supported_band *sband = hw->wiphy->bands[band]; in ieee80211_fill_rate_info()
516 stat->bw = ri->bw; in ieee80211_fill_rate_info()
517 stat->nss = ri->nss; in ieee80211_fill_rate_info()
518 stat->rate_idx = ri->mcs; in ieee80211_fill_rate_info()
520 if (ri->flags & RATE_INFO_FLAGS_HE_MCS) in ieee80211_fill_rate_info()
521 stat->encoding = RX_ENC_HE; in ieee80211_fill_rate_info()
522 else if (ri->flags & RATE_INFO_FLAGS_VHT_MCS) in ieee80211_fill_rate_info()
523 stat->encoding = RX_ENC_VHT; in ieee80211_fill_rate_info()
524 else if (ri->flags & RATE_INFO_FLAGS_MCS) in ieee80211_fill_rate_info()
525 stat->encoding = RX_ENC_HT; in ieee80211_fill_rate_info()
527 stat->encoding = RX_ENC_LEGACY; in ieee80211_fill_rate_info()
529 if (ri->flags & RATE_INFO_FLAGS_SHORT_GI) in ieee80211_fill_rate_info()
530 stat->enc_flags |= RX_ENC_FLAG_SHORT_GI; in ieee80211_fill_rate_info()
532 stat->he_gi = ri->he_gi; in ieee80211_fill_rate_info()
534 if (stat->encoding != RX_ENC_LEGACY) in ieee80211_fill_rate_info()
537 stat->rate_idx = 0; in ieee80211_fill_rate_info()
538 for (i = 0; i < sband->n_bitrates; i++) { in ieee80211_fill_rate_info()
539 if (ri->legacy != sband->bitrates[i].bitrate) in ieee80211_fill_rate_info()
542 stat->rate_idx = i; in ieee80211_fill_rate_info()
555 stat->band = band; in ieee80211_fill_rx_status()
561 return -1; in ieee80211_fill_rx_status()
563 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) in ieee80211_fill_rx_status()
564 stat->bw = RATE_INFO_BW_160; in ieee80211_fill_rx_status()
565 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) in ieee80211_fill_rx_status()
566 stat->bw = RATE_INFO_BW_80; in ieee80211_fill_rx_status()
567 else if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) in ieee80211_fill_rx_status()
568 stat->bw = RATE_INFO_BW_40; in ieee80211_fill_rx_status()
570 stat->bw = RATE_INFO_BW_20; in ieee80211_fill_rx_status()
572 stat->enc_flags = 0; in ieee80211_fill_rx_status()
573 if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) in ieee80211_fill_rx_status()
574 stat->enc_flags |= RX_ENC_FLAG_SHORTPRE; in ieee80211_fill_rx_status()
575 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) in ieee80211_fill_rx_status()
576 stat->enc_flags |= RX_ENC_FLAG_SHORT_GI; in ieee80211_fill_rx_status()
578 stat->rate_idx = rate->idx; in ieee80211_fill_rx_status()
579 if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { in ieee80211_fill_rx_status()
580 stat->encoding = RX_ENC_VHT; in ieee80211_fill_rx_status()
581 stat->rate_idx = ieee80211_rate_get_vht_mcs(rate); in ieee80211_fill_rx_status()
582 stat->nss = ieee80211_rate_get_vht_nss(rate); in ieee80211_fill_rx_status()
583 } else if (rate->flags & IEEE80211_TX_RC_MCS) { in ieee80211_fill_rx_status()
584 stat->encoding = RX_ENC_HT; in ieee80211_fill_rx_status()
586 stat->encoding = RX_ENC_LEGACY; in ieee80211_fill_rx_status()
609 u32 duration = 0; in ieee80211_calc_tx_airtime() local
612 for (i = 0; i < ARRAY_SIZE(info->status.rates); i++) { in ieee80211_calc_tx_airtime()
613 struct ieee80211_tx_rate *rate = &info->status.rates[i]; in ieee80211_calc_tx_airtime()
617 info->band, len); in ieee80211_calc_tx_airtime()
621 duration += cur_duration * rate->count; in ieee80211_calc_tx_airtime()
624 return duration; in ieee80211_calc_tx_airtime()
643 conf = rcu_dereference(vif->bss_conf.chanctx_conf); in ieee80211_calc_expected_tx_airtime()
645 band = conf->def.chan->band; in ieee80211_calc_expected_tx_airtime()
651 struct ieee80211_tx_rate *tx_rate = &sta->deflink.tx_stats.last_rate; in ieee80211_calc_expected_tx_airtime()
652 struct rate_info *ri = &sta->deflink.tx_stats.last_rate_info; in ieee80211_calc_expected_tx_airtime()
653 u32 duration, overhead; in ieee80211_calc_expected_tx_airtime() local
662 duration = ieee80211_get_rate_duration(hw, &stat, &overhead); in ieee80211_calc_expected_tx_airtime()
669 * assuming un-aggregated tx in all cases. in ieee80211_calc_expected_tx_airtime()
671 if (duration > 400 * 1024) /* <= VHT20 MCS2 1S */ in ieee80211_calc_expected_tx_airtime()
673 else if (duration > 250 * 1024) /* <= VHT20 MCS3 1S or MCS1 2S */ in ieee80211_calc_expected_tx_airtime()
675 else if (duration > 150 * 1024) /* <= VHT20 MCS5 1S or MCS2 2S */ in ieee80211_calc_expected_tx_airtime()
677 else if (duration > 70 * 1024) /* <= VHT20 MCS5 2S */ in ieee80211_calc_expected_tx_airtime()
680 duration > 20 * 1024) /* <= HE40 MCS6 2S */ in ieee80211_calc_expected_tx_airtime()
685 duration *= len; in ieee80211_calc_expected_tx_airtime()
686 duration /= AVG_PKT_SIZE; in ieee80211_calc_expected_tx_airtime()
687 duration /= 1024; in ieee80211_calc_expected_tx_airtime()
688 duration += (overhead >> agg_shift); in ieee80211_calc_expected_tx_airtime()
690 return max_t(u32, duration, 4); in ieee80211_calc_expected_tx_airtime()
696 /* No station to get latest rate from, so calculate the worst-case in ieee80211_calc_expected_tx_airtime()
697 * duration using the lowest configured basic rate. in ieee80211_calc_expected_tx_airtime()
699 sband = hw->wiphy->bands[band]; in ieee80211_calc_expected_tx_airtime()
701 basic_rates = vif->bss_conf.basic_rates; in ieee80211_calc_expected_tx_airtime()
702 short_pream = vif->bss_conf.use_short_preamble; in ieee80211_calc_expected_tx_airtime()
704 rateidx = basic_rates ? ffs(basic_rates) - 1 : 0; in ieee80211_calc_expected_tx_airtime()
705 rate = sband->bitrates[rateidx].bitrate; in ieee80211_calc_expected_tx_airtime()
706 cck = sband->bitrates[rateidx].flags & IEEE80211_RATE_MANDATORY_B; in ieee80211_calc_expected_tx_airtime()