hostapd: Add own neighbor report data to neighbor database

Add own neighbor report data to neighbor database based on local LCI and
location civic data.

Signed-off-by: David Spinadel <david.spinadel@intel.com>

diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c
index 1ad7510..336cfca 100644 (file)
--- a/src/ap/hostapd.c
+++ b/src/ap/hostapd.c
@@ -1528,6 +1528,126 @@ void fst_hostapd_fill_iface_obj(struct hostapd_data *hapd,
 #endif /* CONFIG_FST */
 
 
+#ifdef NEED_AP_MLME
+static enum nr_chan_width hostapd_get_nr_chan_width(struct hostapd_data *hapd,
+                                                   int ht, int vht)
+{
+       if (!ht && !vht)
+               return NR_CHAN_WIDTH_20;
+       if (!hapd->iconf->secondary_channel)
+               return NR_CHAN_WIDTH_20;
+       if (!vht || hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_USE_HT)
+               return NR_CHAN_WIDTH_40;
+       if (hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_80MHZ)
+               return NR_CHAN_WIDTH_80;
+       if (hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_160MHZ)
+               return NR_CHAN_WIDTH_160;
+       if (hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_80P80MHZ)
+               return NR_CHAN_WIDTH_80P80;
+       return NR_CHAN_WIDTH_20;
+}
+#endif /* NEED_AP_MLME */
+
+
+static void hostapd_set_own_neighbor_report(struct hostapd_data *hapd)
+{
+#ifdef NEED_AP_MLME
+       u16 capab = hostapd_own_capab_info(hapd);
+       int ht = hapd->iconf->ieee80211n && !hapd->conf->disable_11n;
+       int vht = hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac;
+       struct wpa_ssid_value ssid;
+       u8 channel, op_class;
+       int center_freq1 = 0, center_freq2 = 0;
+       enum nr_chan_width width;
+       u32 bssid_info;
+       struct wpabuf *nr;
+
+       if (!(hapd->conf->radio_measurements[0] &
+             WLAN_RRM_CAPS_NEIGHBOR_REPORT))
+               return;
+
+       bssid_info = 3; /* AP is reachable */
+       bssid_info |= NEI_REP_BSSID_INFO_SECURITY; /* "same as the AP" */
+       bssid_info |= NEI_REP_BSSID_INFO_KEY_SCOPE; /* "same as the AP" */
+
+       if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT)
+               bssid_info |= NEI_REP_BSSID_INFO_SPECTRUM_MGMT;
+
+       bssid_info |= NEI_REP_BSSID_INFO_RM; /* RRM is supported */
+
+       if (hapd->conf->wmm_enabled) {
+               bssid_info |= NEI_REP_BSSID_INFO_QOS;
+
+               if (hapd->conf->wmm_uapsd &&
+                   (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_UAPSD))
+                       bssid_info |= NEI_REP_BSSID_INFO_APSD;
+       }
+
+       if (ht) {
+               bssid_info |= NEI_REP_BSSID_INFO_HT |
+                       NEI_REP_BSSID_INFO_DELAYED_BA;
+
+               /* VHT bit added in IEEE P802.11-REVmc/D4.3 */
+               if (vht)
+                       bssid_info |= NEI_REP_BSSID_INFO_VHT;
+       }
+
+       /* TODO: Set NEI_REP_BSSID_INFO_MOBILITY_DOMAIN if MDE is set */
+
+       ieee80211_freq_to_channel_ext(hapd->iface->freq,
+                                     hapd->iconf->secondary_channel,
+                                     hapd->iconf->vht_oper_chwidth,
+                                     &op_class, &channel);
+       width = hostapd_get_nr_chan_width(hapd, ht, vht);
+       if (vht) {
+               center_freq1 = ieee80211_chan_to_freq(
+                       NULL, op_class,
+                       hapd->iconf->vht_oper_centr_freq_seg0_idx);
+               if (width == NR_CHAN_WIDTH_80P80)
+                       center_freq2 = ieee80211_chan_to_freq(
+                               NULL, op_class,
+                               hapd->iconf->vht_oper_centr_freq_seg1_idx);
+       } else if (ht) {
+               center_freq1 = hapd->iface->freq +
+                       10 * hapd->iconf->secondary_channel;
+       }
+
+       ssid.ssid_len = hapd->conf->ssid.ssid_len;
+       os_memcpy(ssid.ssid, hapd->conf->ssid.ssid, ssid.ssid_len);
+
+       /*
+        * Neighbor Report element size = BSSID + BSSID info + op_class + chan +
+        * phy type + wide bandwidth channel subelement.
+        */
+       nr = wpabuf_alloc(ETH_ALEN + 4 + 1 + 1 + 1 + 5);
+       if (!nr)
+               return;
+
+       wpabuf_put_data(nr, hapd->own_addr, ETH_ALEN);
+       wpabuf_put_le32(nr, bssid_info);
+       wpabuf_put_u8(nr, op_class);
+       wpabuf_put_u8(nr, channel);
+       wpabuf_put_u8(nr, ieee80211_get_phy_type(hapd->iface->freq, ht, vht));
+
+       /*
+        * Wide Bandwidth Channel subelement may be needed to allow the
+        * receiving STA to send packets to the AP. See IEEE P802.11-REVmc/D5.0
+        * Figure 9-301.
+        */
+       wpabuf_put_u8(nr, WNM_NEIGHBOR_WIDE_BW_CHAN);
+       wpabuf_put_u8(nr, 3);
+       wpabuf_put_u8(nr, width);
+       wpabuf_put_u8(nr, center_freq1);
+       wpabuf_put_u8(nr, center_freq2);
+
+       hostapd_neighbor_set(hapd, hapd->own_addr, &ssid, nr, hapd->iconf->lci,
+                            hapd->iconf->civic);
+
+       wpabuf_free(nr);
+#endif /* NEED_AP_MLME */
+}
+
+
 static int hostapd_setup_interface_complete_sync(struct hostapd_iface *iface,
                                                 int err)
 {
@@ -1713,6 +1833,9 @@ dfs_offload:
        if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
                iface->interfaces->terminate_on_error--;
 
+       for (j = 0; j < iface->num_bss; j++)
+               hostapd_set_own_neighbor_report(iface->bss[j]);
+
        return 0;
 
 fail: