#include "sta_info.h"
#include "wme.h"
-int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
- struct ieee80211_ht_info *ht_info)
+void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_ht_cap *ht_cap_ie,
+ struct ieee80211_sta_ht_cap *ht_cap)
{
- if (ht_info == NULL)
- return -EINVAL;
+ BUG_ON(!ht_cap);
- memset(ht_info, 0, sizeof(*ht_info));
+ memset(ht_cap, 0, sizeof(*ht_cap));
if (ht_cap_ie) {
u8 ampdu_info = ht_cap_ie->ampdu_params_info;
- ht_info->ht_supported = 1;
- ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
- ht_info->ampdu_factor =
- ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
- ht_info->ampdu_density =
- (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
- memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
+ 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_info->ht_supported = 0;
-
- return 0;
+ ht_cap->ht_supported = false;
}
-int ieee80211_ht_addt_info_ie_to_ht_bss_info(
- struct ieee80211_ht_addt_info *ht_add_info_ie,
+void ieee80211_ht_info_ie_to_ht_bss_info(
+ struct ieee80211_ht_info *ht_add_info_ie,
struct ieee80211_ht_bss_info *bss_info)
{
- if (bss_info == NULL)
- return -EINVAL;
+ BUG_ON(!bss_info);
memset(bss_info, 0, sizeof(*bss_info));
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;
+
+ 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_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.ampdu_factor = req_ht_cap->ampdu_factor;
+ ht_cap.ampdu_density = req_ht_cap->ampdu_density;
+
+ /* 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;
+
+ /* Counting from 0, therefore +1 */
+ if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_RX_DIFF)
+ max_tx_streams =
+ ((tx_mcs_set_cap & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
+ >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1;
+ else
+ max_tx_streams = IEEE80211_HT_MCS_TX_MAX_STREAMS;
+
+ /*
+ * 802.11n D5.0 20.3.5 / 20.6 says:
+ * - indices 0 to 7 and 32 are single spatial stream
+ * - 8 to 31 are multiple spatial streams using equal modulation
+ * [8..15 for two streams, 16..23 for three and 24..31 for four]
+ * - 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];
+
+ 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] =
+ sband->ht_cap.mcs.rx_mask[i] &
+ req_ht_cap->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;
+
+ 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))) {
+ 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));
+ }
- return 0;
+ return changed;
}
static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata,
* check if configuration can support the BA policy
* and if buffer size does not exceeds max value */
if (((ba_policy != 1)
- && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA)))
+ && (!(conf->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
sband = local->hw.wiphy->bands[conf->channel->band];
buf_size = IEEE80211_MIN_AMPDU_BUF;
- buf_size = buf_size << sband->ht_info.ampdu_factor;
+ buf_size = buf_size << sband->ht_cap.ampdu_factor;
}
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