diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2023-06-20 13:03:55 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2023-06-21 15:02:15 +0300 |
| commit | 00e482010dfb5879fc9e8601d5819641fe4ae925 (patch) | |
| tree | 84bcb2ee0a43d9e1f025291a50e8a2ab9360115b /drivers/net/wireless | |
| parent | d51173c13b24925553489dff77c8cee136c7bfb1 (diff) | |
| download | linux-00e482010dfb5879fc9e8601d5819641fe4ae925.tar.xz | |
wifi: iwlwifi: mvm: add EHT A-MPDU size exponent support
Add support for reading the EHT MAC capabilities A-MPDU
size exponent field, as indicated by the draft spec.
Also clarify the existing code a bit and add comments
so it's clearer to understand what's going on here.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230620125813.c5e00045d90f.I7520787fca8f8430a564adedf975d069ad8c5417@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index 3c24b25fe661..37a52ffa8897 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -60,22 +60,27 @@ u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta, if (WARN_ON(!link_sta)) return 0; - if (link_sta->ht_cap.ht_supported) + /* Note that we always use only legacy & highest supported PPDUs, so + * of Draft P802.11be D.30 Table 10-12a--Fields used for calculating + * the maximum A-MPDU size of various PPDU types in different bands, + * we only need to worry about the highest supported PPDU type here. + */ + + if (link_sta->ht_cap.ht_supported) { + agg_size = link_sta->ht_cap.ampdu_factor; mpdu_dens = link_sta->ht_cap.ampdu_density; + } - if (link_conf->chandef.chan->band == - NL80211_BAND_6GHZ) { + if (link_conf->chandef.chan->band == NL80211_BAND_6GHZ) { + /* overwrite HT values on 6 GHz */ mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa, IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa, IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); } else if (link_sta->vht_cap.vht_supported) { - agg_size = link_sta->vht_cap.cap & - IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; - agg_size >>= - IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; - } else if (link_sta->ht_cap.ht_supported) { - agg_size = link_sta->ht_cap.ampdu_factor; + /* if VHT supported overwrite HT value */ + agg_size = u32_get_bits(link_sta->vht_cap.cap, + IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK); } /* D6.0 10.12.2 A-MPDU length limit rules @@ -91,6 +96,10 @@ u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta, u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3], IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); + if (link_sta->eht_cap.has_eht) + agg_size += u8_get_bits(link_sta->eht_cap.eht_cap_elem.mac_cap_info[1], + IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK); + /* Limit to max A-MPDU supported by FW */ agg_size = min_t(u32, agg_size, STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT); |