#include "bss.h"
#include "scan.h"
#include "sme.h"
+#include "hs20_supplicant.h"
#define SME_AUTH_TIMEOUT 5
#define SME_ASSOC_TIMEOUT 5
static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
+static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
#ifdef CONFIG_IEEE80211W
static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
#endif /* CONFIG_IEEE80211W */
}
#endif /* CONFIG_P2P */
+#ifdef CONFIG_HS20
+ if (wpa_s->conf->hs20) {
+ struct wpabuf *hs20;
+ hs20 = wpabuf_alloc(20);
+ if (hs20) {
+ wpas_hs20_add_indication(hs20);
+ os_memcpy(wpa_s->sme.assoc_req_ie +
+ wpa_s->sme.assoc_req_ie_len,
+ wpabuf_head(hs20), wpabuf_len(hs20));
+ wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
+ wpabuf_free(hs20);
+ }
+ }
+#endif /* CONFIG_HS20 */
+
#ifdef CONFIG_INTERWORKING
if (wpa_s->conf->interworking) {
u8 *pos = wpa_s->sme.assoc_req_ie;
wpa_s->sme.auth_alg == data->auth.auth_type ||
wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
return;
}
params.ssid = wpa_s->sme.ssid;
params.ssid_len = wpa_s->sme.ssid_len;
params.freq = wpa_s->sme.freq;
+ params.bg_scan_period = wpa_s->current_ssid ?
+ wpa_s->current_ssid->bg_scan_period : -1;
params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
wpa_s->sme.assoc_req_ie : NULL;
params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
"driver failed");
wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
return;
}
eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+ eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
+}
+
+
+static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
+ const u8 *chan_list, u8 num_channels,
+ u8 num_intol)
+{
+ struct ieee80211_2040_bss_coex_ie *bc_ie;
+ struct ieee80211_2040_intol_chan_report *ic_report;
+ struct wpabuf *buf;
+
+ wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR,
+ MAC2STR(wpa_s->bssid));
+
+ buf = wpabuf_alloc(2 + /* action.category + action_code */
+ sizeof(struct ieee80211_2040_bss_coex_ie) +
+ sizeof(struct ieee80211_2040_intol_chan_report) +
+ num_channels);
+ if (buf == NULL)
+ return;
+
+ wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
+ wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
+
+ bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
+ bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
+ bc_ie->length = 1;
+ if (num_intol)
+ bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
+
+ if (num_channels > 0) {
+ ic_report = wpabuf_put(buf, sizeof(*ic_report));
+ ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
+ ic_report->length = num_channels + 1;
+ ic_report->op_class = 0;
+ os_memcpy(wpabuf_put(buf, num_channels), chan_list,
+ num_channels);
+ }
+
+ if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
+ wpa_s->own_addr, wpa_s->bssid,
+ wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
+ wpa_msg(wpa_s, MSG_INFO,
+ "SME: Failed to send 20/40 BSS Coexistence frame");
+ }
+
+ wpabuf_free(buf);
+}
+
+
+/**
+ * enum wpas_band - Frequency band
+ * @WPAS_BAND_2GHZ: 2.4 GHz ISM band
+ * @WPAS_BAND_5GHZ: around 5 GHz band (4.9 - 5.7 GHz)
+ */
+enum wpas_band {
+ WPAS_BAND_2GHZ,
+ WPAS_BAND_5GHZ,
+ WPAS_BAND_INVALID
+};
+
+/**
+ * freq_to_channel - Convert frequency into channel info
+ * @channel: Buffer for returning channel number
+ * Returns: Band (2 or 5 GHz)
+ */
+static enum wpas_band freq_to_channel(int freq, u8 *channel)
+{
+ enum wpas_band band = (freq <= 2484) ? WPAS_BAND_2GHZ : WPAS_BAND_5GHZ;
+ u8 chan = 0;
+
+ if (freq >= 2412 && freq <= 2472)
+ chan = (freq - 2407) / 5;
+ else if (freq == 2484)
+ chan = 14;
+ else if (freq >= 5180 && freq <= 5805)
+ chan = (freq - 5000) / 5;
+
+ *channel = chan;
+ return band;
+}
+
+
+int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_bss *bss;
+ const u8 *ie;
+ u16 ht_cap;
+ u8 chan_list[P2P_MAX_CHANNELS], channel;
+ u8 num_channels = 0, num_intol = 0, i;
+
+ if (!wpa_s->sme.sched_obss_scan)
+ return 0;
+
+ wpa_s->sme.sched_obss_scan = 0;
+ if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
+ return 1;
+
+ /*
+ * Check whether AP uses regulatory triplet or channel triplet in
+ * country info. Right now the operating class of the BSS channel
+ * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
+ * based on the assumption that operating class triplet is not used in
+ * beacon frame. If the First Channel Number/Operating Extension
+ * Identifier octet has a positive integer value of 201 or greater,
+ * then its operating class triplet.
+ *
+ * TODO: If Supported Operating Classes element is present in beacon
+ * frame, have to lookup operating class in Annex E and fill them in
+ * 2040 coex frame.
+ */
+ ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
+ if (ie && (ie[1] >= 6) && (ie[5] >= 201))
+ return 1;
+
+ os_memset(chan_list, 0, sizeof(chan_list));
+
+ dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
+ /* Skip other band bss */
+ if (freq_to_channel(bss->freq, &channel) != WPAS_BAND_2GHZ)
+ continue;
+
+ ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
+ ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
+
+ if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
+ /* Check whether the channel is already considered */
+ for (i = 0; i < num_channels; i++) {
+ if (channel == chan_list[i])
+ break;
+ }
+ if (i != num_channels)
+ continue;
+
+ if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
+ num_intol++;
+
+ chan_list[num_channels++] = channel;
+ }
+ }
+
+ sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
+ return 1;
+}
+
+
+static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
+ u16 num_modes,
+ enum hostapd_hw_mode mode)
+{
+ u16 i;
+
+ for (i = 0; i < num_modes; i++) {
+ if (modes[i].mode == mode)
+ return &modes[i];
+ }
+
+ return NULL;
+}
+
+
+static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s,
+ enum hostapd_hw_mode band,
+ struct wpa_driver_scan_params *params)
+{
+ /* Include only supported channels for the specified band */
+ struct hostapd_hw_modes *mode;
+ int count, i;
+
+ mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band);
+ if (mode == NULL) {
+ /* No channels supported in this band - use empty list */
+ params->freqs = os_zalloc(sizeof(int));
+ return;
+ }
+
+ params->freqs = os_zalloc((mode->num_channels + 1) * sizeof(int));
+ if (params->freqs == NULL)
+ return;
+ for (count = 0, i = 0; i < mode->num_channels; i++) {
+ if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
+ continue;
+ params->freqs[count++] = mode->channels[i].freq;
+ }
+}
+
+
+static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_supplicant *wpa_s = eloop_ctx;
+ struct wpa_driver_scan_params params;
+
+ if (!wpa_s->current_bss) {
+ wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
+ return;
+ }
+
+ os_memset(¶ms, 0, sizeof(params));
+ wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, ¶ms);
+ wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
+
+ if (wpa_supplicant_trigger_scan(wpa_s, ¶ms))
+ wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
+ else
+ wpa_s->sme.sched_obss_scan = 1;
+ os_free(params.freqs);
+
+ eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
+ sme_obss_scan_timeout, wpa_s, NULL);
+}
+
+
+void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
+{
+ const u8 *ie;
+ struct wpa_bss *bss = wpa_s->current_bss;
+ struct wpa_ssid *ssid = wpa_s->current_ssid;
+
+ eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
+ wpa_s->sme.sched_obss_scan = 0;
+ if (!enable)
+ return;
+
+ if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || ssid == NULL ||
+ ssid->mode != IEEE80211_MODE_INFRA)
+ return; /* Not using station SME in wpa_supplicant */
+
+ if (!wpa_s->hw.modes ||
+ !(wpa_s->hw.modes->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
+ return; /* Driver does not support HT40 */
+
+ if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
+ return; /* Not associated on 2.4 GHz band */
+
+ /* Check whether AP supports HT40 */
+ ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
+ if (!ie || ie[1] < 2 ||
+ !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
+ return; /* AP does not support HT40 */
+
+ ie = wpa_bss_get_ie(wpa_s->current_bss,
+ WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
+ if (!ie || ie[1] < 14)
+ return; /* AP does not request OBSS scans */
+
+ wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
+ if (wpa_s->sme.obss_scan_int < 10) {
+ wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
+ "replaced with the minimum 10 sec",
+ wpa_s->sme.obss_scan_int);
+ wpa_s->sme.obss_scan_int = 10;
+ }
+ wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
+ wpa_s->sme.obss_scan_int);
+ eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
+ sme_obss_scan_timeout, wpa_s, NULL);
}
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