From 0998d9bd4139426ece4ae85310187bdd4b0d564f Mon Sep 17 00:00:00 2001
From: Markus Theil <markus.theil@tu-ilmenau.de>
Date: Mon, 20 Aug 2018 14:20:44 +0200
Subject: [PATCH] RRM: Move neighbor report functions
Move functions corresponding to neighbor report elements to
src/ap/neighbor_db.[c,h] in preparation to using them after channel
switch from src/ap/drv_callbacks.c.
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
---
src/ap/hostapd.c | 123 +------------------------------------------
src/ap/neighbor_db.c | 121 ++++++++++++++++++++++++++++++++++++++++++
src/ap/neighbor_db.h | 1 +
3 files changed, 123 insertions(+), 122 deletions(-)
diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c
index 7501bac6e..342585f92 100644
--- a/src/ap/hostapd.c
+++ b/src/ap/hostapd.c
@@ -1668,127 +1668,6 @@ 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;
- u8 center_freq1_idx = 0, center_freq2_idx = 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 */
-
- if (ieee80211_freq_to_channel_ext(hapd->iface->freq,
- hapd->iconf->secondary_channel,
- hapd->iconf->vht_oper_chwidth,
- &op_class, &channel) ==
- NUM_HOSTAPD_MODES)
- return;
- width = hostapd_get_nr_chan_width(hapd, ht, vht);
- if (vht) {
- center_freq1_idx = hapd->iconf->vht_oper_centr_freq_seg0_idx;
- if (width == NR_CHAN_WIDTH_80P80)
- center_freq2_idx =
- hapd->iconf->vht_oper_centr_freq_seg1_idx;
- } else if (ht) {
- ieee80211_freq_to_chan(hapd->iface->freq +
- 10 * hapd->iconf->secondary_channel,
- ¢er_freq1_idx);
- }
-
- 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_idx);
- wpabuf_put_u8(nr, center_freq2_idx);
-
- hostapd_neighbor_set(hapd, hapd->own_addr, &ssid, nr, hapd->iconf->lci,
- hapd->iconf->civic, hapd->iconf->stationary_ap);
-
- wpabuf_free(nr);
-#endif /* NEED_AP_MLME */
-}
-
-
#ifdef CONFIG_OWE
static int hostapd_owe_iface_iter(struct hostapd_iface *iface, void *ctx)
@@ -2085,7 +1964,7 @@ dfs_offload:
iface->interfaces->terminate_on_error--;
for (j = 0; j < iface->num_bss; j++)
- hostapd_set_own_neighbor_report(iface->bss[j]);
+ hostapd_neighbor_set_own_report(iface->bss[j]);
return 0;
diff --git a/src/ap/neighbor_db.c b/src/ap/neighbor_db.c
index b1f35a4d1..2b6f72726 100644
--- a/src/ap/neighbor_db.c
+++ b/src/ap/neighbor_db.c
@@ -11,6 +11,7 @@
#include "utils/common.h"
#include "hostapd.h"
+#include "ieee802_11.h"
#include "neighbor_db.h"
@@ -134,3 +135,123 @@ void hostapd_free_neighbor_db(struct hostapd_data *hapd)
os_free(nr);
}
}
+
+
+#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 */
+
+
+void hostapd_neighbor_set_own_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;
+ u8 center_freq1_idx = 0, center_freq2_idx = 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 */
+
+ if (ieee80211_freq_to_channel_ext(hapd->iface->freq,
+ hapd->iconf->secondary_channel,
+ hapd->iconf->vht_oper_chwidth,
+ &op_class, &channel) ==
+ NUM_HOSTAPD_MODES)
+ return;
+ width = hostapd_get_nr_chan_width(hapd, ht, vht);
+ if (vht) {
+ center_freq1_idx = hapd->iconf->vht_oper_centr_freq_seg0_idx;
+ if (width == NR_CHAN_WIDTH_80P80)
+ center_freq2_idx =
+ hapd->iconf->vht_oper_centr_freq_seg1_idx;
+ } else if (ht) {
+ ieee80211_freq_to_chan(hapd->iface->freq +
+ 10 * hapd->iconf->secondary_channel,
+ ¢er_freq1_idx);
+ }
+
+ 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_idx);
+ wpabuf_put_u8(nr, center_freq2_idx);
+
+ hostapd_neighbor_set(hapd, hapd->own_addr, &ssid, nr, hapd->iconf->lci,
+ hapd->iconf->civic, hapd->iconf->stationary_ap);
+
+ wpabuf_free(nr);
+#endif /* NEED_AP_MLME */
+}
diff --git a/src/ap/neighbor_db.h b/src/ap/neighbor_db.h
index a0f66895b..9c8f4f2dd 100644
--- a/src/ap/neighbor_db.h
+++ b/src/ap/neighbor_db.h
@@ -17,6 +17,7 @@ int hostapd_neighbor_set(struct hostapd_data *hapd, const u8 *bssid,
const struct wpa_ssid_value *ssid,
const struct wpabuf *nr, const struct wpabuf *lci,
const struct wpabuf *civic, int stationary);
+void hostapd_neighbor_set_own_report(struct hostapd_data *hapd);
int hostapd_neighbor_remove(struct hostapd_data *hapd, const u8 *bssid,
const struct wpa_ssid_value *ssid);
void hostapd_free_neighbor_db(struct hostapd_data *hapd);