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mac80211: include HT capabilities in probe request 

Include the HT capabilities in the probe request frame.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-03-31 12:12:07 +02:00 committed by John W. Linville
parent de95a54b1a
commit 5ef2d41afb
2 changed files with 21 additions and 0 deletions
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5
net/mac80211/main.c
View File

@ -822,6 +822,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
struct net_device *mdev;
struct ieee80211_master_priv *mpriv;
int channels, i, j, max_bitrates;
bool supp_ht;
/*
* generic code guarantees at least one band,
@ -830,6 +831,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
*/
channels = 0;
max_bitrates = 0;
supp_ht = false;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
struct ieee80211_supported_band *sband;
@ -846,6 +848,7 @@ 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;
}
local->int_scan_req.n_channels = channels;
@ -872,6 +875,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
* information -- SSID is the driver's responsibility.
*/
local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */
if (supp_ht)
local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
if (!local->ops->hw_scan) {
/* For hw_scan, driver needs to set these up. */

16
net/mac80211/util.c
View File

@ -861,6 +861,22 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
*pos++ = rate->bitrate / 5;
}
if (sband->ht_cap.ht_supported) {
__le16 tmp = cpu_to_le16(sband->ht_cap.cap);
*pos++ = WLAN_EID_HT_CAPABILITY;
*pos++ = sizeof(struct ieee80211_ht_cap);
memset(pos, 0, sizeof(struct ieee80211_ht_cap));
memcpy(pos, &tmp, sizeof(u16));
pos += sizeof(u16);
/* TODO: needs a define here for << 2 */
*pos++ = sband->ht_cap.ampdu_factor |
(sband->ht_cap.ampdu_density << 2);
memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
pos += sizeof(sband->ht_cap.mcs);
pos += 2 + 4 + 1; /* ext info, BF cap, antsel */
}
/*
* If adding more here, adjust code in main.c
* that calculates local->scan_ies_len.