Add 6 GHz operation information (IEEE 802.11ax/D6.0, Figure 9-787k)
while building HE operation element for non-HE AP. This field is used to
determine channel information in the absence of HT/VHT IEs.
Signed-off-by: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>
---
net/mac80211/ieee80211_i.h | 2 +-
net/mac80211/mesh.c | 11 +++++---
net/mac80211/util.c | 63 +++++++++++++++++++++++++++++++++++++++++++---
3 files changed, 68 insertions(+), 8 deletions(-)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 6517a56970b7..0bb442feb1db 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -2175,7 +2175,7 @@ u8 *ieee80211_ie_build_he_cap(u8 *pos,
const struct ieee80211_sta_he_cap *he_cap,
u8 *end);
u8 *ieee80211_ie_build_he_6ghz_band_cap(u8 *pos, u16 he_6ghz_cap);
-u8 *ieee80211_ie_build_he_oper(u8 *pos);
+u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
const struct ieee80211_supported_band *sband,
const u8 *srates, int srates_len, u32 *rates);
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 2ca34869538d..0cbe3260c5c1 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -565,6 +565,7 @@ int mesh_add_he_oper_ie(struct ieee80211_sub_if_data *sdata,
{
const struct ieee80211_sta_he_cap *he_cap;
struct ieee80211_supported_band *sband;
+ u32 len;
u8 *pos;
sband = ieee80211_get_sband(sdata);
@@ -578,11 +579,15 @@ int mesh_add_he_oper_ie(struct ieee80211_sub_if_data *sdata,
sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10)
return 0;
- if (skb_tailroom(skb) < 2 + 1 + sizeof(struct ieee80211_he_operation))
+ len = 2 + 1 + sizeof(struct ieee80211_he_operation);
+ if (sdata->vif.bss_conf.chandef.chan->band == NL80211_BAND_6GHZ)
+ len += sizeof(struct ieee80211_he_oper_6ghz_op_info);
+
+ if (skb_tailroom(skb) < len)
return -ENOMEM;
- pos = skb_put(skb, 2 + 1 + sizeof(struct ieee80211_he_operation));
- ieee80211_ie_build_he_oper(pos);
+ pos = skb_put(skb, len);
+ ieee80211_ie_build_he_oper(pos, &sdata->vif.bss_conf.chandef);
return 0;
}
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 2bcebe672c0d..90b8c42b1aa8 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -2977,13 +2977,18 @@ u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
return pos + sizeof(struct ieee80211_vht_operation);
}
-u8 *ieee80211_ie_build_he_oper(u8 *pos)
+u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
{
struct ieee80211_he_operation *he_oper;
+ struct ieee80211_he_oper_6ghz_op_info *he_6ghz_op;
u32 he_oper_params;
+ u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
+
+ if (chandef->chan->band == NL80211_BAND_6GHZ)
+ ie_len += sizeof(struct ieee80211_he_oper_6ghz_op_info);
*pos++ = WLAN_EID_EXTENSION;
- *pos++ = 1 + sizeof(struct ieee80211_he_operation);
+ *pos++ = ie_len;
*pos++ = WLAN_EID_EXT_HE_OPERATION;
he_oper_params = 0;
@@ -2993,16 +2998,66 @@ u8 *ieee80211_ie_build_he_oper(u8 *pos)
IEEE80211_HE_OPERATION_ER_SU_DISABLE);
he_oper_params |= u32_encode_bits(1,
IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
+ if (chandef->chan->band == NL80211_BAND_6GHZ)
+ he_oper_params |= u32_encode_bits(1,
+ IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
he_oper = (struct ieee80211_he_operation *)pos;
he_oper->he_oper_params = cpu_to_le32(he_oper_params);
/* don't require special HE peer rates */
he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
+ pos += sizeof(struct ieee80211_he_operation);
- /* TODO add VHT operational and 6GHz operational subelement? */
+ if (chandef->chan->band != NL80211_BAND_6GHZ)
+ goto out;
- return pos + sizeof(struct ieee80211_vht_operation);
+ /* TODO add VHT operational */
+ he_6ghz_op = (struct ieee80211_he_oper_6ghz_op_info *)pos;
+ he_6ghz_op->min_rate = 6; /* 6 Mbps */
+ he_6ghz_op->primary_chan =
+ ieee80211_frequency_to_channel(chandef->chan->center_freq);
+ he_6ghz_op->center_freq_seg0_idx =
+ ieee80211_frequency_to_channel(chandef->center_freq1);
+ if (chandef->center_freq2)
+ he_6ghz_op->center_freq_seg1_idx =
+ ieee80211_frequency_to_channel(chandef->center_freq2);
+ else
+ he_6ghz_op->center_freq_seg1_idx = 0;
+
+ switch (chandef->width) {
+ case NL80211_CHAN_WIDTH_160:
+ /* Convert 160 MHz channel width to new style as interop
+ * workaround.
+ */
+ he_6ghz_op->control =
+ IEEE80211_HE_6GHZ_CHANWIDTH_160MHZ_80P80MHZ;
+ he_6ghz_op->center_freq_seg1_idx =
+ he_6ghz_op->center_freq_seg0_idx;
+ if (chandef->chan->center_freq < chandef->center_freq1)
+ he_6ghz_op->center_freq_seg0_idx -= 8;
+ else
+ he_6ghz_op->center_freq_seg0_idx += 8;
+ fallthrough;
+ case NL80211_CHAN_WIDTH_80P80:
+ he_6ghz_op->control =
+ IEEE80211_HE_6GHZ_CHANWIDTH_160MHZ_80P80MHZ;
+ break;
+ case NL80211_CHAN_WIDTH_80:
+ he_6ghz_op->control = IEEE80211_HE_6GHZ_CHANWIDTH_80MHZ;
+ break;
+ case NL80211_CHAN_WIDTH_40:
+ he_6ghz_op->control = IEEE80211_HE_6GHZ_CHANWIDTH_40MHZ;
+ break;
+ default:
+ he_6ghz_op->control = IEEE80211_HE_6GHZ_CHANWIDTH_20MHZ;
+ break;
+ }
+
+ pos += sizeof(struct ieee80211_he_oper_6ghz_op_info);
+
+out:
+ return pos;
}
bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
--
2.7.4
