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| author | Felix Fietkau <nbd@nbd.name> | 2016-06-29 10:44:39 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2016-07-02 19:34:50 +0200 |
| commit | d002aee42c4894b19eab811f1b7c158d0d435ba7 (patch) | |
| tree | 1172c7ef6b81140fa352619fd792cc40f07d205d /package | |
| parent | 898fff8253599c16df0d4a312784ee5158e5629d (diff) | |
| download | upstream-d002aee42c4894b19eab811f1b7c158d0d435ba7.tar.gz upstream-d002aee42c4894b19eab811f1b7c158d0d435ba7.tar.bz2 upstream-d002aee42c4894b19eab811f1b7c158d0d435ba7.zip | |
mac80211: enable STBC and LDPC for VHT rates
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'package')
| -rw-r--r-- | package/kernel/mac80211/patches/310-mac80211-minstrel-Enable-STBC-and-LDPC-for-VHT-Rates.patch | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/310-mac80211-minstrel-Enable-STBC-and-LDPC-for-VHT-Rates.patch b/package/kernel/mac80211/patches/310-mac80211-minstrel-Enable-STBC-and-LDPC-for-VHT-Rates.patch new file mode 100644 index 0000000000..25929c9813 --- /dev/null +++ b/package/kernel/mac80211/patches/310-mac80211-minstrel-Enable-STBC-and-LDPC-for-VHT-Rates.patch @@ -0,0 +1,81 @@ +From: Chaitanya T K <chaitanya.mgit@gmail.com> +Date: Mon, 27 Jun 2016 15:23:26 +0530 +Subject: [PATCH] mac80211: minstrel: Enable STBC and LDPC for VHT Rates + +If peer support reception of STBC and LDPC, enable them for better +performance. + +Signed-off-by: Chaitanya TK <chaitanya.mgit@gmail.com> +--- + +--- a/include/linux/ieee80211.h ++++ b/include/linux/ieee80211.h +@@ -1550,6 +1550,7 @@ struct ieee80211_vht_operation { + #define IEEE80211_VHT_CAP_RXSTBC_3 0x00000300 + #define IEEE80211_VHT_CAP_RXSTBC_4 0x00000400 + #define IEEE80211_VHT_CAP_RXSTBC_MASK 0x00000700 ++#define IEEE80211_VHT_CAP_RXSTBC_SHIFT 8 + #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE 0x00000800 + #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE 0x00001000 + #define IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT 13 +--- a/net/mac80211/rc80211_minstrel_ht.c ++++ b/net/mac80211/rc80211_minstrel_ht.c +@@ -1166,13 +1166,14 @@ minstrel_ht_update_caps(void *priv, stru + struct minstrel_ht_sta_priv *msp = priv_sta; + struct minstrel_ht_sta *mi = &msp->ht; + struct ieee80211_mcs_info *mcs = &sta->ht_cap.mcs; +- u16 sta_cap = sta->ht_cap.cap; ++ u16 ht_cap = sta->ht_cap.cap; + struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap; + int use_vht; + int n_supported = 0; + int ack_dur; + int stbc; + int i; ++ bool ldpc = false; + + /* fall back to the old minstrel for legacy stations */ + if (!sta->ht_cap.ht_supported) +@@ -1210,16 +1211,24 @@ minstrel_ht_update_caps(void *priv, stru + } + mi->sample_tries = 4; + +- /* TODO tx_flags for vht - ATM the RC API is not fine-grained enough */ + if (!use_vht) { +- stbc = (sta_cap & IEEE80211_HT_CAP_RX_STBC) >> ++ stbc = (ht_cap & IEEE80211_HT_CAP_RX_STBC) >> + IEEE80211_HT_CAP_RX_STBC_SHIFT; +- mi->tx_flags |= stbc << IEEE80211_TX_CTL_STBC_SHIFT; + +- if (sta_cap & IEEE80211_HT_CAP_LDPC_CODING) +- mi->tx_flags |= IEEE80211_TX_CTL_LDPC; ++ if (ht_cap & IEEE80211_HT_CAP_LDPC_CODING) ++ ldpc = true; ++ } else { ++ stbc = (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK) >> ++ IEEE80211_VHT_CAP_RXSTBC_SHIFT; ++ ++ if (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC) ++ ldpc = true; + } + ++ mi->tx_flags |= stbc << IEEE80211_TX_CTL_STBC_SHIFT; ++ if (ldpc) ++ mi->tx_flags |= IEEE80211_TX_CTL_LDPC; ++ + for (i = 0; i < ARRAY_SIZE(mi->groups); i++) { + u32 gflags = minstrel_mcs_groups[i].flags; + int bw, nss; +@@ -1232,10 +1241,10 @@ minstrel_ht_update_caps(void *priv, stru + + if (gflags & IEEE80211_TX_RC_SHORT_GI) { + if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH) { +- if (!(sta_cap & IEEE80211_HT_CAP_SGI_40)) ++ if (!(ht_cap & IEEE80211_HT_CAP_SGI_40)) + continue; + } else { +- if (!(sta_cap & IEEE80211_HT_CAP_SGI_20)) ++ if (!(ht_cap & IEEE80211_HT_CAP_SGI_20)) + continue; + } + } |