In 6 GHz band, determine chandef from 6 GHz operation information
of HE operation element.
Signed-off-by: Rajkumar Manoharan <[email protected]>
---
net/mac80211/ieee80211_i.h | 3 ++
net/mac80211/mesh.c | 1 +
net/mac80211/mlme.c | 12 ++++++
net/mac80211/util.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 112 insertions(+)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 0bb442feb1db..42a7782c973a 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -2194,6 +2194,9 @@ bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw,
const struct ieee80211_vht_operation *oper,
const struct ieee80211_ht_operation *htop,
struct cfg80211_chan_def *chandef);
+bool ieee80211_chandef_he_oper(struct ieee80211_sub_if_data *sdata,
+ const struct ieee80211_he_operation *heop,
+ struct cfg80211_chan_def *chandef);
u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
int __must_check
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 04d3da733bc8..0521b57939e1 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -99,6 +99,7 @@ bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
ieee80211_chandef_vht_oper(&sdata->local->hw,
ie->vht_operation, ie->ht_operation,
&sta_chan_def);
+ ieee80211_chandef_he_oper(sdata, ie->he_operation, &sta_chan_def);
if (!cfg80211_chandef_compatible(&sdata->vif.bss_conf.chandef,
&sta_chan_def))
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index b4dfefd482a6..9115dc9c7d78 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -163,6 +163,9 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
chandef->center_freq1 = channel->center_freq;
+ if (channel->band == NL80211_BAND_6GHZ)
+ goto skip_ht_vht_oper;
+
if (!ht_oper || !sta_ht_cap.ht_supported) {
ret = IEEE80211_STA_DISABLE_HT |
IEEE80211_STA_DISABLE_VHT |
@@ -263,6 +266,15 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
*chandef = vht_chandef;
+skip_ht_vht_oper:
+ if (!ieee80211_chandef_he_oper(sdata, he_oper, chandef)) {
+ if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
+ sdata_info(sdata,
+ "AP HE information is invalid, disable HE\n");
+ ret = IEEE80211_STA_DISABLE_HE;
+ goto out;
+ }
+
ret = 0;
out:
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 90b8c42b1aa8..ea02d59e5ac6 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -3170,6 +3170,102 @@ bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw,
return true;
}
+bool ieee80211_chandef_he_oper(struct ieee80211_sub_if_data *sdata,
+ const struct ieee80211_he_operation *heop,
+ struct cfg80211_chan_def *chandef)
+{
+ struct ieee80211_he_oper_6ghz_op_info info;
+ const struct ieee80211_sta_he_cap *he_cap;
+ struct ieee80211_supported_band *sband;
+ struct cfg80211_chan_def new = *chandef;
+ int cf0, cf1;
+ int ccf0, ccf1;
+ bool support_80_80;
+ bool support_160;
+ u8 he_phy_cap;
+ u8 pos = 0;
+
+ /* Below HE Operation check is required only for 6 GHz band */
+ if (chandef->chan->band != NL80211_BAND_6GHZ)
+ return true;
+
+ if (!heop)
+ return false;
+
+ sband = ieee80211_get_sband(sdata);
+ if (!sband)
+ return false;
+
+ he_cap = ieee80211_get_he_iftype_cap(sband, sdata->vif.type);
+ if (!he_cap)
+ return false;
+
+ if (!(le32_to_cpu(heop->he_oper_params) &
+ IEEE80211_HE_OPERATION_6GHZ_OP_INFO))
+ return false;
+
+ he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
+ support_160 =
+ !!(he_phy_cap &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G);
+ support_80_80 =
+ !!(he_phy_cap &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G);
+
+ if (le32_to_cpu(heop->he_oper_params) &
+ IEEE80211_HE_OPERATION_VHT_OPER_INFO)
+ pos += 3;
+ if (le32_to_cpu(heop->he_oper_params) &
+ IEEE80211_HE_OPERATION_CO_HOSTED_BSS)
+ pos += 1;
+
+ memcpy(&info, &heop->optional[pos], sizeof(info));
+ ccf0 = info.center_freq_seg0_idx;
+ ccf1 = info.center_freq_seg1_idx;
+
+ cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
+ cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
+
+ switch (info.control & 0x3) {
+ case IEEE80211_HE_6GHZ_CHANWIDTH_20MHZ:
+ new.center_freq1 = cf0;
+ new.width = NL80211_CHAN_WIDTH_20;
+ break;
+ case IEEE80211_HE_6GHZ_CHANWIDTH_40MHZ:
+ new.center_freq1 = cf0;
+ new.width = NL80211_CHAN_WIDTH_40;
+ break;
+ case IEEE80211_HE_6GHZ_CHANWIDTH_80MHZ:
+ new.center_freq1 = cf0;
+ new.width = NL80211_CHAN_WIDTH_80;
+ break;
+ case IEEE80211_HE_6GHZ_CHANWIDTH_160MHZ_80P80MHZ:
+ new.center_freq1 = cf0;
+ new.width = NL80211_CHAN_WIDTH_80;
+ if (ccf1) {
+ unsigned int diff;
+
+ diff = abs(ccf1 - ccf0);
+ if (diff == 8 && support_160) {
+ new.width = NL80211_CHAN_WIDTH_160;
+ new.center_freq1 = cf1;
+ } else if ((diff > 8) && support_80_80) {
+ new.width = NL80211_CHAN_WIDTH_80P80;
+ new.center_freq2 = cf1;
+ }
+ }
+ break;
+ default:
+ return false;
+ }
+
+ if (!cfg80211_chandef_valid(&new))
+ return false;
+
+ *chandef = new;
+ return true;
+}
+
int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
const struct ieee80211_supported_band *sband,
const u8 *srates, int srates_len, u32 *rates)
--
2.7.4