#include "sta_info.h"
#include "beacon.h"
#include "ieee802_11.h"
+#include "dfs.h"
-u8 * hostapd_eid_vht_capabilities(struct hostapd_data *hapd, u8 *eid)
+u8 * hostapd_eid_vht_capabilities(struct hostapd_data *hapd, u8 *eid, u32 nsts)
{
struct ieee80211_vht_capabilities *cap;
struct hostapd_hw_modes *mode = hapd->iface->current_mode;
cap->vht_capabilities_info = host_to_le32(
hapd->iface->conf->vht_capab);
+ if (nsts != 0) {
+ u32 hapd_nsts;
+
+ hapd_nsts = le_to_host32(cap->vht_capabilities_info);
+ hapd_nsts = (hapd_nsts >> VHT_CAP_BEAMFORMEE_STS_OFFSET) & 7;
+ cap->vht_capabilities_info &=
+ ~(host_to_le32(hapd_nsts <<
+ VHT_CAP_BEAMFORMEE_STS_OFFSET));
+ cap->vht_capabilities_info |=
+ host_to_le32(nsts << VHT_CAP_BEAMFORMEE_STS_OFFSET);
+ }
+
/* Supported MCS set comes from hw */
os_memcpy(&cap->vht_supported_mcs_set, mode->vht_mcs_set, 8);
hapd->iconf->vht_oper_centr_freq_seg1_idx;
oper->vht_op_info_chwidth = hapd->iconf->vht_oper_chwidth;
+ if (hapd->iconf->vht_oper_chwidth == 2) {
+ /*
+ * Convert 160 MHz channel width to new style as interop
+ * workaround.
+ */
+ oper->vht_op_info_chwidth = 1;
+ oper->vht_op_info_chan_center_freq_seg1_idx =
+ oper->vht_op_info_chan_center_freq_seg0_idx;
+ if (hapd->iconf->channel <
+ hapd->iconf->vht_oper_centr_freq_seg0_idx)
+ oper->vht_op_info_chan_center_freq_seg0_idx -= 8;
+ else
+ oper->vht_op_info_chan_center_freq_seg0_idx += 8;
+ } else if (hapd->iconf->vht_oper_chwidth == 3) {
+ /*
+ * Convert 80+80 MHz channel width to new style as interop
+ * workaround.
+ */
+ oper->vht_op_info_chwidth = 1;
+ }
/* VHT Basic MCS set comes from hw */
/* Hard code 1 stream, MCS0-7 is a min Basic VHT MCS rates */
}
+static int check_valid_vht_mcs(struct hostapd_hw_modes *mode,
+ const u8 *sta_vht_capab)
+{
+ const struct ieee80211_vht_capabilities *vht_cap;
+ struct ieee80211_vht_capabilities ap_vht_cap;
+ u16 sta_rx_mcs_set, ap_tx_mcs_set;
+ int i;
+
+ if (!mode)
+ return 1;
+
+ /*
+ * Disable VHT caps for STAs for which there is not even a single
+ * allowed MCS in any supported number of streams, i.e., STA is
+ * advertising 3 (not supported) as VHT MCS rates for all supported
+ * stream cases.
+ */
+ os_memcpy(&ap_vht_cap.vht_supported_mcs_set, mode->vht_mcs_set,
+ sizeof(ap_vht_cap.vht_supported_mcs_set));
+ vht_cap = (const struct ieee80211_vht_capabilities *) sta_vht_capab;
+
+ /* AP Tx MCS map vs. STA Rx MCS map */
+ sta_rx_mcs_set = le_to_host16(vht_cap->vht_supported_mcs_set.rx_map);
+ ap_tx_mcs_set = le_to_host16(ap_vht_cap.vht_supported_mcs_set.tx_map);
+
+ for (i = 0; i < VHT_RX_NSS_MAX_STREAMS; i++) {
+ if ((ap_tx_mcs_set & (0x3 << (i * 2))) == 3)
+ continue;
+
+ if ((sta_rx_mcs_set & (0x3 << (i * 2))) == 3)
+ continue;
+
+ return 1;
+ }
+
+ wpa_printf(MSG_DEBUG,
+ "No matching VHT MCS found between AP TX and STA RX");
+ return 0;
+}
+
+
+u8 * hostapd_eid_wb_chsw_wrapper(struct hostapd_data *hapd, u8 *eid)
+{
+ u8 bw, chan1, chan2 = 0;
+ int freq1;
+
+ if (!hapd->cs_freq_params.channel ||
+ !hapd->cs_freq_params.vht_enabled)
+ return eid;
+
+ /* bandwidth: 0: 40, 1: 80, 2: 160, 3: 80+80 */
+ switch (hapd->cs_freq_params.bandwidth) {
+ case 40:
+ bw = 0;
+ break;
+ case 80:
+ /* check if it's 80+80 */
+ if (!hapd->cs_freq_params.center_freq2)
+ bw = 1;
+ else
+ bw = 3;
+ break;
+ case 160:
+ bw = 2;
+ break;
+ default:
+ /* not valid VHT bandwidth or not in CSA */
+ return eid;
+ }
+
+ freq1 = hapd->cs_freq_params.center_freq1 ?
+ hapd->cs_freq_params.center_freq1 :
+ hapd->cs_freq_params.freq;
+ if (ieee80211_freq_to_chan(freq1, &chan1) !=
+ HOSTAPD_MODE_IEEE80211A)
+ return eid;
+
+ if (hapd->cs_freq_params.center_freq2 &&
+ ieee80211_freq_to_chan(hapd->cs_freq_params.center_freq2,
+ &chan2) != HOSTAPD_MODE_IEEE80211A)
+ return eid;
+
+ *eid++ = WLAN_EID_VHT_CHANNEL_SWITCH_WRAPPER;
+ *eid++ = 5; /* Length of Channel Switch Wrapper */
+ *eid++ = WLAN_EID_VHT_WIDE_BW_CHSWITCH;
+ *eid++ = 3; /* Length of Wide Bandwidth Channel Switch element */
+ *eid++ = bw; /* New Channel Width */
+ *eid++ = chan1; /* New Channel Center Frequency Segment 0 */
+ *eid++ = chan2; /* New Channel Center Frequency Segment 1 */
+
+ return eid;
+}
+
+
+u8 * hostapd_eid_txpower_envelope(struct hostapd_data *hapd, u8 *eid)
+{
+ struct hostapd_iface *iface = hapd->iface;
+ struct hostapd_config *iconf = iface->conf;
+ struct hostapd_hw_modes *mode = iface->current_mode;
+ struct hostapd_channel_data *chan;
+ int dfs, i;
+ u8 channel, tx_pwr_count, local_pwr_constraint;
+ int max_tx_power;
+ u8 tx_pwr;
+
+ if (!mode)
+ return eid;
+
+ if (ieee80211_freq_to_chan(iface->freq, &channel) == NUM_HOSTAPD_MODES)
+ return eid;
+
+ for (i = 0; i < mode->num_channels; i++) {
+ if (mode->channels[i].freq == iface->freq)
+ break;
+ }
+ if (i == mode->num_channels)
+ return eid;
+
+ switch (iface->conf->vht_oper_chwidth) {
+ case VHT_CHANWIDTH_USE_HT:
+ if (iconf->secondary_channel == 0) {
+ /* Max Transmit Power count = 0 (20 MHz) */
+ tx_pwr_count = 0;
+ } else {
+ /* Max Transmit Power count = 1 (20, 40 MHz) */
+ tx_pwr_count = 1;
+ }
+ break;
+ case VHT_CHANWIDTH_80MHZ:
+ /* Max Transmit Power count = 2 (20, 40, and 80 MHz) */
+ tx_pwr_count = 2;
+ break;
+ case VHT_CHANWIDTH_80P80MHZ:
+ case VHT_CHANWIDTH_160MHZ:
+ /* Max Transmit Power count = 3 (20, 40, 80, 160/80+80 MHz) */
+ tx_pwr_count = 3;
+ break;
+ default:
+ return eid;
+ }
+
+ /*
+ * Below local_pwr_constraint logic is referred from
+ * hostapd_eid_pwr_constraint.
+ *
+ * Check if DFS is required by regulatory.
+ */
+ dfs = hostapd_is_dfs_required(hapd->iface);
+ if (dfs < 0)
+ dfs = 0;
+
+ /*
+ * In order to meet regulations when TPC is not implemented using
+ * a transmit power that is below the legal maximum (including any
+ * mitigation factor) should help. In this case, indicate 3 dB below
+ * maximum allowed transmit power.
+ */
+ if (hapd->iconf->local_pwr_constraint == -1)
+ local_pwr_constraint = (dfs == 0) ? 0 : 3;
+ else
+ local_pwr_constraint = hapd->iconf->local_pwr_constraint;
+
+ /*
+ * A STA that is not an AP shall use a transmit power less than or
+ * equal to the local maximum transmit power level for the channel.
+ * The local maximum transmit power can be calculated from the formula:
+ * local max TX pwr = max TX pwr - local pwr constraint
+ * Where max TX pwr is maximum transmit power level specified for
+ * channel in Country element and local pwr constraint is specified
+ * for channel in this Power Constraint element.
+ */
+ chan = &mode->channels[i];
+ max_tx_power = chan->max_tx_power - local_pwr_constraint;
+
+ /*
+ * Local Maximum Transmit power is encoded as two's complement
+ * with a 0.5 dB step.
+ */
+ max_tx_power *= 2; /* in 0.5 dB steps */
+ if (max_tx_power > 127) {
+ /* 63.5 has special meaning of 63.5 dBm or higher */
+ max_tx_power = 127;
+ }
+ if (max_tx_power < -128)
+ max_tx_power = -128;
+ if (max_tx_power < 0)
+ tx_pwr = 0x80 + max_tx_power + 128;
+ else
+ tx_pwr = max_tx_power;
+
+ *eid++ = WLAN_EID_VHT_TRANSMIT_POWER_ENVELOPE;
+ *eid++ = 2 + tx_pwr_count;
+
+ /*
+ * Max Transmit Power count and
+ * Max Transmit Power units = 0 (EIRP)
+ */
+ *eid++ = tx_pwr_count;
+
+ for (i = 0; i <= tx_pwr_count; i++)
+ *eid++ = tx_pwr;
+
+ return eid;
+}
+
+
u16 copy_sta_vht_capab(struct hostapd_data *hapd, struct sta_info *sta,
- const u8 *vht_capab, size_t vht_capab_len)
+ const u8 *vht_capab)
{
/* Disable VHT caps for STAs associated to no-VHT BSSes. */
if (!vht_capab ||
- vht_capab_len < sizeof(struct ieee80211_vht_capabilities) ||
- hapd->conf->disable_11ac) {
+ hapd->conf->disable_11ac ||
+ !check_valid_vht_mcs(hapd->iface->current_mode, vht_capab)) {
sta->flags &= ~WLAN_STA_VHT;
os_free(sta->vht_capabilities);
sta->vht_capabilities = NULL;
WPA_PUT_BE32(pos, (OUI_BROADCOM << 8) | VENDOR_VHT_TYPE);
pos += 4;
*pos++ = VENDOR_VHT_SUBTYPE;
- pos = hostapd_eid_vht_capabilities(hapd, pos);
+ pos = hostapd_eid_vht_capabilities(hapd, pos, 0);
pos = hostapd_eid_vht_operation(hapd, pos);
return pos;
projects / mech_eap.git / blobdiff