For VHT capbility, it has intersection of mcs and nss for peer in
function ieee80211_vht_cap_ie_to_sta_vht_cap. For HE capbility,
it does not have intersection.
This patch is do intersection for HE capbility.
Signed-off-by: Wen Gong <wgong@xxxxxxxxxxxxxx>
---
v2: fix build warning
net/mac80211/he.c | 90 ++++++++++++++++++++++++++++++++++++++
net/mac80211/ieee80211_i.h | 5 +++
2 files changed, 95 insertions(+)
diff --git a/net/mac80211/he.c b/net/mac80211/he.c
index cc26f239838b..9a6562e324cb 100644
--- a/net/mac80211/he.c
+++ b/net/mac80211/he.c
@@ -52,6 +52,59 @@ ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_
sta->sta.he_6ghz_capa = *he_6ghz_capa;
}
+void
+ieee80211_he_mcs_disable(u16 *he_mcs)
+{
+ u32 i;
+
+ for (i = 0; i < 8; i++)
+ *he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
+}
+
+void
+ieee80211_he_mcs_intersection(u16 *he_own_rx, u16 *he_peer_rx,
+ u16 *he_own_tx, u16 *he_peer_tx)
+{
+ u32 i;
+ u16 own_rx, own_tx, peer_rx, peer_tx;
+
+ for (i = 0; i < 8; i++) {
+ own_rx = le16_to_cpu(*he_own_rx);
+ own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
+
+ own_tx = le16_to_cpu(*he_own_tx);
+ own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
+
+ peer_rx = le16_to_cpu(*he_peer_rx);
+ peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
+
+ peer_tx = le16_to_cpu(*he_peer_tx);
+ peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
+
+ if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
+ if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED)
+ peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED;
+ else if (own_rx < peer_tx)
+ peer_tx = own_rx;
+ }
+
+ if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
+ if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED)
+ peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED;
+ else if (own_tx < peer_rx)
+ peer_rx = own_tx;
+ }
+
+ *he_peer_rx &=
+ ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
+ *he_peer_rx |= cpu_to_le16(peer_rx << i * 2);
+
+ *he_peer_tx &=
+ ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
+ *he_peer_tx |= cpu_to_le16(peer_tx << i * 2);
+ }
+}
+
void
ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
@@ -60,10 +113,12 @@ ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta)
{
struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap;
+ struct ieee80211_sta_he_cap own_he_cap = sband->iftype_data->he_cap;
struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie;
u8 he_ppe_size;
u8 mcs_nss_size;
u8 he_total_size;
+ bool own_160, peer_160, own_80p80, peer_80p80;
memset(he_cap, 0, sizeof(*he_cap));
@@ -101,6 +156,41 @@ ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa)
ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, sta);
+
+ ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80,
+ &he_cap->he_mcs_nss_supp.rx_mcs_80,
+ &own_he_cap.he_mcs_nss_supp.tx_mcs_80,
+ &he_cap->he_mcs_nss_supp.tx_mcs_80);
+
+ own_160 = !!(own_he_cap.he_cap_elem.phy_cap_info[0] &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G);
+ peer_160 = !!(he_cap->he_cap_elem.phy_cap_info[0] &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G);
+
+ if (peer_160 && own_160) {
+ ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160,
+ &he_cap->he_mcs_nss_supp.rx_mcs_160,
+ &own_he_cap.he_mcs_nss_supp.tx_mcs_160,
+ &he_cap->he_mcs_nss_supp.tx_mcs_160);
+ } else if (peer_160 && !own_160) {
+ ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160);
+ ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160);
+ }
+
+ own_80p80 = !!(own_he_cap.he_cap_elem.phy_cap_info[0] &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G);
+ peer_80p80 = !!(he_cap->he_cap_elem.phy_cap_info[0] &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G);
+
+ if (peer_80p80 && own_80p80) {
+ ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80,
+ &he_cap->he_mcs_nss_supp.rx_mcs_80p80,
+ &own_he_cap.he_mcs_nss_supp.tx_mcs_80p80,
+ &he_cap->he_mcs_nss_supp.tx_mcs_80p80);
+ } else if (peer_80p80 && !own_80p80) {
+ ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80);
+ ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80);
+ }
}
void
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 2a21226fb518..93c8e8d0b9e3 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1915,6 +1915,11 @@ ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
/* HE */
void
+ieee80211_he_mcs_disable(u16 *he_mcs);
+void
+ieee80211_he_mcs_intersection(u16 *he_own_rx, u16 *he_peer_rx,
+ u16 *he_own_tx, u16 *he_peer_tx);
+void
ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
const u8 *he_cap_ie, u8 he_cap_len,
--
2.23.0
