diff options
Diffstat (limited to 'net/mac80211/util.c')
| -rw-r--r-- | net/mac80211/util.c | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 6a59a56f0daa..8d3ae6b2f95f 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -3666,6 +3666,7 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, u64 ts = status->mactime; struct rate_info ri; u16 rate; + u8 n_ltf; if (WARN_ON(!ieee80211_have_rx_timestamp(status))) return 0; @@ -3676,11 +3677,58 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, /* Fill cfg80211 rate info */ switch (status->encoding) { + case RX_ENC_HE: + ri.flags |= RATE_INFO_FLAGS_HE_MCS; + ri.mcs = status->rate_idx; + ri.nss = status->nss; + ri.he_ru_alloc = status->he_ru; + if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) + ri.flags |= RATE_INFO_FLAGS_SHORT_GI; + + /* + * See P802.11ax_D6.0, section 27.3.4 for + * VHT PPDU format. + */ + if (status->flag & RX_FLAG_MACTIME_PLCP_START) { + mpdu_offset += 2; + ts += 36; + + /* + * TODO: + * For HE MU PPDU, add the HE-SIG-B. + * For HE ER PPDU, add 8us for the HE-SIG-A. + * For HE TB PPDU, add 4us for the HE-STF. + * Add the HE-LTF durations - variable. + */ + } + + break; case RX_ENC_HT: ri.mcs = status->rate_idx; ri.flags |= RATE_INFO_FLAGS_MCS; if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) ri.flags |= RATE_INFO_FLAGS_SHORT_GI; + + /* + * See P802.11REVmd_D3.0, section 19.3.2 for + * HT PPDU format. + */ + if (status->flag & RX_FLAG_MACTIME_PLCP_START) { + mpdu_offset += 2; + if (status->enc_flags & RX_ENC_FLAG_HT_GF) + ts += 24; + else + ts += 32; + + /* + * Add Data HT-LTFs per streams + * TODO: add Extension HT-LTFs, 4us per LTF + */ + n_ltf = ((ri.mcs >> 3) & 3) + 1; + n_ltf = n_ltf == 3 ? 4 : n_ltf; + ts += n_ltf * 4; + } + break; case RX_ENC_VHT: ri.flags |= RATE_INFO_FLAGS_VHT_MCS; @@ -3688,6 +3736,23 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, ri.nss = status->nss; if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) ri.flags |= RATE_INFO_FLAGS_SHORT_GI; + + /* + * See P802.11REVmd_D3.0, section 21.3.2 for + * VHT PPDU format. + */ + if (status->flag & RX_FLAG_MACTIME_PLCP_START) { + mpdu_offset += 2; + ts += 36; + + /* + * Add VHT-LTFs per streams + */ + n_ltf = (ri.nss != 1) && (ri.nss % 2) ? + ri.nss + 1 : ri.nss; + ts += 4 * n_ltf; + } + break; default: WARN_ON(1); @@ -3711,7 +3776,6 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); if (status->flag & RX_FLAG_MACTIME_PLCP_START) { - /* TODO: handle HT/VHT preambles */ if (status->band == NL80211_BAND_5GHZ) { ts += 20 << shift; mpdu_offset += 2; |