VHT cap IE insertion in probeReq as part of 11ac changes.
Signed-off-by: Mahesh Palivela <maheshp@xxxxxxxxxxx>
Cc: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
---
net/mac80211/ieee80211_i.h | 2 ++
net/mac80211/main.c | 8 +++++++-
net/mac80211/util.c | 25 +++++++++++++++++++++++++
3 files changed, 34 insertions(+), 1 deletions(-)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index f834a00..478ed48 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1481,6 +1481,8 @@ u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
struct ieee80211_channel *channel,
enum nl80211_channel_type channel_type,
u16 prot_mode);
+u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
+ u32 cap);
/* channel management */
enum ieee80211_chan_mode {
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 0b040fb..06e6cc9 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -688,7 +688,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
int result, i;
enum ieee80211_band band;
int channels, max_bitrates;
- bool supp_ht;
+ bool supp_ht, supp_vht;
netdev_features_t feature_whitelist;
static const u32 cipher_suites[] = {
/* keep WEP first, it may be removed below */
@@ -733,6 +733,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
channels = 0;
max_bitrates = 0;
supp_ht = false;
+ supp_vht = false;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
struct ieee80211_supported_band *sband;
@@ -750,6 +751,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
if (max_bitrates < sband->n_bitrates)
max_bitrates = sband->n_bitrates;
supp_ht = supp_ht || sband->ht_cap.ht_supported;
+ supp_vht = supp_vht || sband->vht_cap.vht_supported;
}
local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
@@ -825,6 +827,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
if (supp_ht)
local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
+ if (supp_vht)
+ local->scan_ies_len += 2 +
+ sizeof(struct ieee80211_vht_capabilities);
+
if (!local->ops->hw_scan) {
/* For hw_scan, driver needs to set these up. */
local->hw.wiphy->max_scan_ssids = 4;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 242ecde..94728de 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1072,6 +1072,10 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
pos += noffset - offset;
}
+ if (sband->vht_cap.vht_supported)
+ pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
+ sband->vht_cap.cap);
+
return pos - buffer;
}
@@ -1699,6 +1703,27 @@ u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
return pos;
}
+u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
+ u32 cap)
+{
+ __le32 tmp;
+
+ *pos++ = WLAN_EID_VHT_CAPABILITY;
+ *pos++ = sizeof(struct ieee80211_vht_capabilities);
+ memset(pos, 0, sizeof(struct ieee80211_vht_capabilities));
+
+ /* capability flags */
+ tmp = cpu_to_le32(cap);
+ memcpy(pos, &tmp, sizeof(u32));
+ pos += sizeof(u32);
+
+ /* VHT MCS set */
+ memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
+ pos += sizeof(vht_cap->vht_mcs);
+
+ return pos;
+}
+
u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
struct ieee80211_channel *channel,
enum nl80211_channel_type channel_type,
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
