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authorSergey Matyukevich <sergey.matyukevich.os@quantenna.com>2019-01-08 23:31:49 +0300
committerJohannes Berg <johannes.berg@intel.com>2019-01-19 09:53:49 +0100
commitd9bb410888ce1354ce29dcde671e1e21cc0c64cd (patch)
tree68d1befce8dff78404c5d6194adeddc68e895ed9 /net/mac80211
parentb4809e9484da147dc82a31b961df111eee72201a (diff)
mac80211: allow overriding HT STBC capabilities
Allow user to override STBC configuration for Rx and Tx spatial streams. In practice RX/TX STBC settings can be modified using appropriate options in wpa_supplicant configuration file: tx_stbc=-1..1 rx_stbc=-1..3 This functionality has been added to wpa_supplicant in commit cdeea70f59d0. In FullMAC case these STBC options are passed to drivers by cfg80211 connect callback in fields of cfg80211_connect_params structure. However for mac80211 drivers, e.g. for mac80211_hwsim, overrides for STBC settings are ignored. The reason why RX/TX STBC capabilities are not modified for mac80211 drivers is as follows. All drivers need to specify supported HT/VHT overrides explicitly: see ht_capa_mod_mask and vht_capa_mod_mask fields of wiphy structure. Only supported overrides will be passed to drivers by cfg80211_connect and cfg80211_mlme_assoc operations: see bitwise 'AND' performed by cfg80211_oper_and_ht_capa and cfg80211_oper_and_vht_capa. This commit adds RX/TX STBC HT capabilities to mac80211_ht_capa_mod_mask, allowing their modifications, as well as applies requested STBC modifications in function ieee80211_apply_htcap_overrides. Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/ht.c8
-rw-r--r--net/mac80211/main.c2
2 files changed, 10 insertions, 0 deletions
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index f849ea814993..e03c46ac8e4d 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -107,6 +107,14 @@ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
__check_htcap_enable(ht_capa, ht_capa_mask, ht_cap,
IEEE80211_HT_CAP_40MHZ_INTOLERANT);
+ /* Allow user to enable TX STBC bit */
+ __check_htcap_enable(ht_capa, ht_capa_mask, ht_cap,
+ IEEE80211_HT_CAP_TX_STBC);
+
+ /* Allow user to configure RX STBC bits */
+ if (ht_capa_mask->cap_info & IEEE80211_HT_CAP_RX_STBC)
+ ht_cap->cap |= ht_capa->cap_info & IEEE80211_HT_CAP_RX_STBC;
+
/* Allow user to decrease AMPDU factor */
if (ht_capa_mask->ampdu_params_info &
IEEE80211_HT_AMPDU_PARM_FACTOR) {
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 896f17d726d0..71005b6dfcd1 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -478,6 +478,8 @@ static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
IEEE80211_HT_CAP_MAX_AMSDU |
IEEE80211_HT_CAP_SGI_20 |
IEEE80211_HT_CAP_SGI_40 |
+ IEEE80211_HT_CAP_TX_STBC |
+ IEEE80211_HT_CAP_RX_STBC |
IEEE80211_HT_CAP_LDPC_CODING |
IEEE80211_HT_CAP_40MHZ_INTOLERANT),
.mcs = {