diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2024-01-29 20:19:29 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2024-02-08 15:00:43 +0100 |
| commit | 06b4c8665dcff32f50153fd4cddc4b05f31569a7 (patch) | |
| tree | f7a27e422c3b67c2d0ad6a04a0d92e1fce2aff16 /net | |
| parent | 6239da18d2f947523a80fb1f85f8d8a13d1726c1 (diff) | |
wifi: mac80211: limit HE RU capabilities when limiting bandwidth
When limiting a station's supported bandwidth while connecting,
also limit various other HE capabilities according to the bandwidth
needed for them.
Link: https://msgid.link/20240129202041.34be99efca25.I02a695961bc6aadd37768b17c50fcdec4427d460@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/util.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 5224c22b1afc..c2fe9aece00d 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -3300,17 +3300,48 @@ ieee80211_get_adjusted_he_cap(const struct ieee80211_conn_settings *conn, const struct ieee80211_sta_he_cap *he_cap, struct ieee80211_he_cap_elem *elem) { + u8 ru_limit, max_ru; + *elem = he_cap->he_cap_elem; - if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) + switch (conn->bw_limit) { + case IEEE80211_CONN_BW_LIMIT_20: + ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242; + break; + case IEEE80211_CONN_BW_LIMIT_40: + ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484; + break; + case IEEE80211_CONN_BW_LIMIT_80: + ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996; + break; + default: + ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996; + break; + } + + max_ru = elem->phy_cap_info[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; + max_ru = min(max_ru, ru_limit); + elem->phy_cap_info[8] &= ~IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; + elem->phy_cap_info[8] |= max_ru; + + if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) { elem->phy_cap_info[0] &= ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G | IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G); + elem->phy_cap_info[9] &= + ~IEEE80211_HE_PHY_CAP9_LONGER_THAN_16_SIGB_OFDM_SYM; + } - if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) + if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { elem->phy_cap_info[0] &= ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G | IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G); + elem->phy_cap_info[5] &= + ~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK; + elem->phy_cap_info[7] &= + ~(IEEE80211_HE_PHY_CAP7_STBC_TX_ABOVE_80MHZ | + IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ); + } } u8 *ieee80211_ie_build_he_cap(const struct ieee80211_conn_settings *conn, |