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Diffstat (limited to 'net/mac80211/ht.c')
-rw-r--r--net/mac80211/ht.c181
1 files changed, 75 insertions, 106 deletions
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index e2d121b..42c3e59 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -20,114 +20,38 @@
#include "sta_info.h"
#include "wme.h"
-void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_ht_cap *ht_cap_ie,
+void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
+ struct ieee80211_ht_cap *ht_cap_ie,
struct ieee80211_sta_ht_cap *ht_cap)
{
+ u8 ampdu_info, tx_mcs_set_cap;
+ int i, max_tx_streams;
BUG_ON(!ht_cap);
memset(ht_cap, 0, sizeof(*ht_cap));
- if (ht_cap_ie) {
- u8 ampdu_info = ht_cap_ie->ampdu_params_info;
-
- ht_cap->ht_supported = true;
- ht_cap->cap = le16_to_cpu(ht_cap_ie->cap_info);
- ht_cap->ampdu_factor =
- ampdu_info & IEEE80211_HT_AMPDU_PARM_FACTOR;
- ht_cap->ampdu_density =
- (ampdu_info & IEEE80211_HT_AMPDU_PARM_DENSITY) >> 2;
- memcpy(&ht_cap->mcs, &ht_cap_ie->mcs, sizeof(ht_cap->mcs));
- } else
- ht_cap->ht_supported = false;
-}
-
-void ieee80211_ht_info_ie_to_ht_bss_info(
- struct ieee80211_ht_info *ht_add_info_ie,
- struct ieee80211_ht_bss_info *bss_info)
-{
- BUG_ON(!bss_info);
-
- memset(bss_info, 0, sizeof(*bss_info));
-
- if (ht_add_info_ie) {
- u16 op_mode;
- op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
-
- bss_info->primary_channel = ht_add_info_ie->control_chan;
- bss_info->bss_cap = ht_add_info_ie->ht_param;
- bss_info->bss_op_mode = (u8)(op_mode & 0xff);
- }
-}
-
-/*
- * ieee80211_handle_ht should be called only after the operating band
- * has been determined as ht configuration depends on the hw's
- * HT abilities for a specific band.
- */
-u32 ieee80211_handle_ht(struct ieee80211_local *local,
- struct ieee80211_sta_ht_cap *req_ht_cap,
- struct ieee80211_ht_bss_info *req_bss_cap)
-{
- struct ieee80211_conf *conf = &local->hw.conf;
- struct ieee80211_supported_band *sband;
- struct ieee80211_sta_ht_cap ht_cap;
- struct ieee80211_ht_bss_info ht_bss_conf;
- u32 changed = 0;
- int i;
- u8 max_tx_streams;
- u8 tx_mcs_set_cap;
- bool enable_ht = true;
-
- sband = local->hw.wiphy->bands[conf->channel->band];
-
- memset(&ht_cap, 0, sizeof(ht_cap));
- memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info));
-
- /* HT is not supported */
- if (!sband->ht_cap.ht_supported)
- enable_ht = false;
-
- /* disable HT */
- if (!enable_ht) {
- if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)
- changed |= BSS_CHANGED_HT;
- conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
- conf->ht_cap.ht_supported = false;
- return changed;
- }
-
-
- if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE))
- changed |= BSS_CHANGED_HT;
-
- conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE;
- ht_cap.ht_supported = true;
+ if (!ht_cap_ie)
+ return;
- ht_cap.cap = req_ht_cap->cap & sband->ht_cap.cap;
- ht_cap.cap &= ~IEEE80211_HT_CAP_SM_PS;
- ht_cap.cap |= sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS;
+ ht_cap->ht_supported = true;
- ht_bss_conf.primary_channel = req_bss_cap->primary_channel;
- ht_bss_conf.bss_cap = req_bss_cap->bss_cap;
- ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode;
+ ht_cap->cap = ht_cap->cap & sband->ht_cap.cap;
+ ht_cap->cap &= ~IEEE80211_HT_CAP_SM_PS;
+ ht_cap->cap |= sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS;
- ht_cap.ampdu_factor = req_ht_cap->ampdu_factor;
- ht_cap.ampdu_density = req_ht_cap->ampdu_density;
+ ampdu_info = ht_cap_ie->ampdu_params_info;
+ ht_cap->ampdu_factor =
+ ampdu_info & IEEE80211_HT_AMPDU_PARM_FACTOR;
+ ht_cap->ampdu_density =
+ (ampdu_info & IEEE80211_HT_AMPDU_PARM_DENSITY) >> 2;
/* own MCS TX capabilities */
tx_mcs_set_cap = sband->ht_cap.mcs.tx_params;
- /*
- * configure supported Tx MCS according to requested MCS
- * (based in most cases on Rx capabilities of peer) and self
- * Tx MCS capabilities (as defined by low level driver HW
- * Tx capabilities)
- */
-
/* can we TX with MCS rates? */
if (!(tx_mcs_set_cap & IEEE80211_HT_MCS_TX_DEFINED))
- goto check_changed;
+ return;
/* Counting from 0, therefore +1 */
if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_RX_DIFF)
@@ -145,29 +69,73 @@ u32 ieee80211_handle_ht(struct ieee80211_local *local,
* - remainder are multiple spatial streams using unequal modulation
*/
for (i = 0; i < max_tx_streams; i++)
- ht_cap.mcs.rx_mask[i] =
- sband->ht_cap.mcs.rx_mask[i] &
- req_ht_cap->mcs.rx_mask[i];
+ ht_cap->mcs.rx_mask[i] =
+ sband->ht_cap.mcs.rx_mask[i] & ht_cap_ie->mcs.rx_mask[i];
if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION)
for (i = IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE;
i < IEEE80211_HT_MCS_MASK_LEN; i++)
- ht_cap.mcs.rx_mask[i] =
+ ht_cap->mcs.rx_mask[i] =
sband->ht_cap.mcs.rx_mask[i] &
- req_ht_cap->mcs.rx_mask[i];
+ ht_cap_ie->mcs.rx_mask[i];
/* handle MCS rate 32 too */
- if (sband->ht_cap.mcs.rx_mask[32/8] &
- req_ht_cap->mcs.rx_mask[32/8] & 1)
- ht_cap.mcs.rx_mask[32/8] |= 1;
+ if (sband->ht_cap.mcs.rx_mask[32/8] & ht_cap_ie->mcs.rx_mask[32/8] & 1)
+ ht_cap->mcs.rx_mask[32/8] |= 1;
+}
+
+/*
+ * ieee80211_enable_ht should be called only after the operating band
+ * has been determined as ht configuration depends on the hw's
+ * HT abilities for a specific band.
+ */
+u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_ht_info *hti,
+ u16 ap_ht_cap_flags)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_bss_ht_conf ht;
+ u32 changed = 0;
+ bool enable_ht = true, ht_changed;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ memset(&ht, 0, sizeof(ht));
+
+ /* HT is not supported */
+ if (!sband->ht_cap.ht_supported)
+ enable_ht = false;
+
+ /* check that channel matches the right operating channel */
+ if (local->hw.conf.channel->center_freq !=
+ ieee80211_channel_to_frequency(hti->control_chan))
+ enable_ht = false;
+
+ /*
+ * XXX: This is totally incorrect when there are multiple virtual
+ * interfaces, needs to be fixed later.
+ */
+ ht_changed = local->hw.conf.ht.enabled != enable_ht;
+ local->hw.conf.ht.enabled = enable_ht;
+ if (ht_changed)
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_HT);
+
+ /* disable HT */
+ if (!enable_ht)
+ return 0;
+ ht.secondary_channel_offset =
+ hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET;
+ ht.width_40_ok =
+ !(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
+ (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
+ (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY);
+ ht.operation_mode = le16_to_cpu(hti->operation_mode);
- check_changed:
/* if bss configuration changed store the new one */
- if (memcmp(&conf->ht_cap, &ht_cap, sizeof(ht_cap)) ||
- memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) {
+ if (memcmp(&sdata->vif.bss_conf.ht, &ht, sizeof(ht))) {
changed |= BSS_CHANGED_HT;
- memcpy(&conf->ht_cap, &ht_cap, sizeof(ht_cap));
- memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf));
+ sdata->vif.bss_conf.ht = ht;
}
return changed;
@@ -900,8 +868,9 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
/* sanity check for incoming parameters:
* check if configuration can support the BA policy
* and if buffer size does not exceeds max value */
+ /* XXX: check own ht delayed BA capability?? */
if (((ba_policy != 1)
- && (!(conf->ht_cap.cap & IEEE80211_HT_CAP_DELAY_BA)))
+ && (!(sta->sta.ht_cap.cap & IEEE80211_HT_CAP_DELAY_BA)))
|| (buf_size > IEEE80211_MAX_AMPDU_BUF)) {
status = WLAN_STATUS_INVALID_QOS_PARAM;
#ifdef CONFIG_MAC80211_HT_DEBUG