[PATCH 07/19] hostapd: Add neighboring APs DB
Ilan Peer
ilan.peer at intel.com
Tue Apr 5 06:08:00 PDT 2016
From: David Spinadel <david.spinadel at intel.com>
Add a configurable neighbor DB that includes the content of neighbor
report IE, LCI and location civic subelements and SSID.
All neighbor's parameters must be updated at once; neighbor report IE
and SSID are mandatory, LCI and civic are optional.
The age of LCI is set to the time of neighbor update.
The control interface API is:
set_neighbor <BSSID> <ssid=SSID> <nr=data> [lci=<data>] [civic=<data>]
To delete a neighbor use remove_neigbor:
remove_neighbor <BSSID> <SSID>
Signed-off-by: David Spinadel <david.spinadel at intel.com>
---
hostapd/Android.mk | 1 +
hostapd/Makefile | 1 +
hostapd/ctrl_iface.c | 130 ++++++++++++++++++++++++++++++++++++++++++++++
hostapd/hostapd_cli.c | 46 ++++++++++++++++
src/ap/hostapd.c | 4 ++
src/ap/hostapd.h | 12 +++++
src/ap/neighbor_db.c | 126 ++++++++++++++++++++++++++++++++++++++++++++
src/ap/neighbor_db.h | 20 +++++++
wpa_supplicant/Android.mk | 1 +
wpa_supplicant/Makefile | 1 +
10 files changed, 342 insertions(+)
create mode 100644 src/ap/neighbor_db.c
create mode 100644 src/ap/neighbor_db.h
diff --git a/hostapd/Android.mk b/hostapd/Android.mk
index 67ca129..42f67bc 100644
--- a/hostapd/Android.mk
+++ b/hostapd/Android.mk
@@ -96,6 +96,7 @@ OBJS += src/ap/pmksa_cache_auth.c
OBJS += src/ap/ieee802_11_shared.c
OBJS += src/ap/beacon.c
OBJS += src/ap/bss_load.c
+OBJS += src/ap/neighbor_db.c
OBJS_d =
OBJS_p =
LIBS =
diff --git a/hostapd/Makefile b/hostapd/Makefile
index fa4af82..35b055c 100644
--- a/hostapd/Makefile
+++ b/hostapd/Makefile
@@ -84,6 +84,7 @@ OBJS += ../src/ap/pmksa_cache_auth.o
OBJS += ../src/ap/ieee802_11_shared.o
OBJS += ../src/ap/beacon.o
OBJS += ../src/ap/bss_load.o
+OBJS += ../src/ap/neighbor_db.o
OBJS_c = hostapd_cli.o ../src/common/wpa_ctrl.o ../src/utils/os_$(CONFIG_OS).o
diff --git a/hostapd/ctrl_iface.c b/hostapd/ctrl_iface.c
index a87f117..bfe3731 100644
--- a/hostapd/ctrl_iface.c
+++ b/hostapd/ctrl_iface.c
@@ -52,6 +52,7 @@
#include "fst/fst_ctrl_iface.h"
#include "config_file.h"
#include "ctrl_iface.h"
+#include "ap/neighbor_db.h"
#define HOSTAPD_CLI_DUP_VALUE_MAX_LEN 256
@@ -2071,6 +2072,129 @@ static int hostapd_ctrl_iface_track_sta_list(struct hostapd_data *hapd,
#endif /* NEED_AP_MLME */
+static int hostapd_ctrl_iface_set_neighbor(struct hostapd_data *hapd, char *buf)
+{
+ struct wpa_ssid_value ssid;
+ u8 bssid[ETH_ALEN];
+ struct wpabuf *nr = NULL, *lci = NULL, *civic = NULL;
+ char *tmp;
+ int ret;
+
+ if (!(hapd->conf->radio_measurements[0] &
+ WLAN_RRM_CAPS_NEIGHBOR_REPORT)) {
+ wpa_printf(MSG_ERROR,
+ "CTRL: set_neighbor: neighbor report isn't supported");
+ return -1;
+ }
+
+ if (hwaddr_aton(buf, bssid)) {
+ wpa_printf(MSG_ERROR, "CTRL: set_neighbor: bad BSSID");
+ return -1;
+ }
+
+ tmp = os_strstr(buf, "ssid=");
+ if (!tmp || ssid_parse(tmp + 5, &ssid)) {
+ wpa_printf(MSG_ERROR,
+ "CTRL: set_neighbor: bad or missing SSID");
+ return -1;
+ }
+ buf = os_strchr(tmp + 6, tmp[5] == '"' ? '"' : ' ');
+ if (!buf)
+ return -1;
+
+ tmp = os_strstr(buf, "nr=");
+ if (!tmp) {
+ wpa_printf(MSG_ERROR,
+ "CTRL: set_neighbor: missing neighbor report IE");
+ return -1;
+ }
+
+ buf = os_strchr(tmp, ' ');
+ if (buf) {
+ *buf = '\0';
+ buf++;
+ }
+
+ nr = wpabuf_parse_bin(tmp + 3);
+ if (!nr) {
+ wpa_printf(MSG_ERROR,
+ "CTRL: set_neighbor: bad neighbor report IE");
+ return -1;
+ }
+
+ if (!buf)
+ goto set;
+
+ tmp = os_strstr(buf, "lci=");
+ if (tmp) {
+ buf = os_strchr(tmp, ' ');
+ if (buf) {
+ *buf = '\0';
+ buf++;
+ }
+ lci = wpabuf_parse_bin(tmp + 4);
+ if (!lci) {
+ wpa_printf(MSG_ERROR,
+ "CTRL: set_neighbor: bad LCI subelement");
+ wpabuf_free(nr);
+ return -1;
+ }
+ }
+
+ if (!buf)
+ goto set;
+
+ tmp = os_strstr(buf, "civic=");
+ if (tmp) {
+ buf = os_strchr(tmp, ' ');
+ if (buf) {
+ *buf = '\0';
+ buf++;
+ }
+ civic = wpabuf_parse_bin(tmp + 6);
+ if (!civic) {
+ wpa_printf(MSG_ERROR,
+ "CTRL: set_neighbor: bad civic subelement");
+ wpabuf_free(nr);
+ wpabuf_free(lci);
+ return -1;
+ }
+ }
+
+set:
+ ret = hostapd_neighbor_set(hapd, bssid, &ssid, nr, lci, civic);
+
+ wpabuf_free(nr);
+ wpabuf_free(lci);
+ wpabuf_free(civic);
+
+ return ret;
+}
+
+
+static int hostapd_ctrl_iface_remove_neighbor(struct hostapd_data *hapd,
+ char *buf)
+{
+ struct wpa_ssid_value ssid;
+ u8 bssid[ETH_ALEN];
+ char *tmp;
+
+ if (hwaddr_aton(buf, bssid)) {
+ wpa_printf(MSG_ERROR, "CTRL: remove_neighbor: bad BSSID");
+ return -1;
+ }
+
+ tmp = os_strstr(buf, "ssid=");
+ if (!tmp || ssid_parse(tmp + 5, &ssid)) {
+ wpa_printf(MSG_ERROR,
+ "CTRL: remove_neighbor: bad or missing SSID");
+ return -1;
+ }
+
+ return hostapd_neighbor_remove(hapd, bssid, &ssid);
+}
+
+
static int hostapd_ctrl_iface_receive_process(struct hostapd_data *hapd,
char *buf, char *reply,
int reply_size,
@@ -2312,6 +2436,12 @@ static int hostapd_ctrl_iface_receive_process(struct hostapd_data *hapd,
reply_size);
} else if (os_strcmp(buf, "PMKSA_FLUSH") == 0) {
hostapd_ctrl_iface_pmksa_flush(hapd);
+ } else if (os_strncmp(buf, "SET_NEIGHBOR ", 13) == 0) {
+ if (hostapd_ctrl_iface_set_neighbor(hapd, buf + 13))
+ reply_len = -1;
+ } else if (os_strncmp(buf, "REMOVE_NEIGHBOR ", 16) == 0) {
+ if (hostapd_ctrl_iface_remove_neighbor(hapd, buf + 16))
+ reply_len = -1;
} else {
os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
reply_len = 16;
diff --git a/hostapd/hostapd_cli.c b/hostapd/hostapd_cli.c
index bf86d37..863db42 100644
--- a/hostapd/hostapd_cli.c
+++ b/hostapd/hostapd_cli.c
@@ -1096,6 +1096,50 @@ static int hostapd_cli_cmd_vendor(struct wpa_ctrl *ctrl, int argc, char *argv[])
}
+static int hostapd_cli_cmd_set_neighbor(struct wpa_ctrl *ctrl, int argc,
+ char *argv[])
+{
+ char cmd[2048];
+ int res;
+
+ if (argc < 3 || argc > 5) {
+ printf("Invalid set_neighbor command: needs 3, 4 or 5 arguments\n");
+ return -1;
+ }
+
+ res = os_snprintf(cmd, sizeof(cmd), "SET_NEIGHBOR %s %s %s %s %s",
+ argv[0], argv[1], argv[2], argc >= 4 ? argv[3] : "",
+ argc == 5 ? argv[4] : "");
+ if (os_snprintf_error(sizeof(cmd), res)) {
+ printf("Too long SET_NEIGHBOR command.\n");
+ return -1;
+ }
+ return wpa_ctrl_command(ctrl, cmd);
+}
+
+
+static int hostapd_cli_cmd_remove_neighbor(struct wpa_ctrl *ctrl, int argc,
+ char *argv[])
+{
+ char cmd[400];
+ int res;
+
+ if (argc != 2) {
+ printf("Invalid remove_neighbor command: needs 2 arguments\n");
+ return -1;
+ }
+
+ res = os_snprintf(cmd, sizeof(cmd), "REMOVE_NEIGHBOR %s %s", argv[0],
+ argv[1]);
+ if (os_snprintf_error(sizeof(cmd), res)) {
+ printf("Too long REMOVE_NEIGHBOR command.\n");
+ return -1;
+ }
+ return wpa_ctrl_command(ctrl, cmd);
+}
+
+
+
static int hostapd_cli_cmd_erp_flush(struct wpa_ctrl *ctrl, int argc,
char *argv[])
{
@@ -1204,6 +1248,8 @@ static const struct hostapd_cli_cmd hostapd_cli_commands[] = {
{ "log_level", hostapd_cli_cmd_log_level },
{ "pmksa", hostapd_cli_cmd_pmksa },
{ "pmksa_flush", hostapd_cli_cmd_pmksa_flush },
+ { "set_neighbor", hostapd_cli_cmd_set_neighbor },
+ { "remove_neighbor", hostapd_cli_cmd_remove_neighbor },
{ NULL, NULL }
};
diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c
index ee80f4f..1ad7510 100644
--- a/src/ap/hostapd.c
+++ b/src/ap/hostapd.c
@@ -43,6 +43,7 @@
#include "x_snoop.h"
#include "dhcp_snoop.h"
#include "ndisc_snoop.h"
+#include "neighbor_db.h"
static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
@@ -335,6 +336,8 @@ static void hostapd_free_hapd_data(struct hostapd_data *hapd)
wpabuf_free(hapd->mesh_pending_auth);
hapd->mesh_pending_auth = NULL;
#endif /* CONFIG_MESH */
+
+ hostpad_free_neighbor_db(hapd);
}
@@ -906,6 +909,7 @@ static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
return -1;
}
hapd->started = 1;
+ dl_list_init(&hapd->nr_db);
if (!first || first == -1) {
u8 *addr = hapd->own_addr;
diff --git a/src/ap/hostapd.h b/src/ap/hostapd.h
index 75a7c04..e2c4913 100644
--- a/src/ap/hostapd.h
+++ b/src/ap/hostapd.h
@@ -99,6 +99,16 @@ struct wps_stat {
u8 peer_addr[ETH_ALEN];
};
+struct hostapd_neighbor_entry {
+ struct dl_list list;
+ u8 bssid[ETH_ALEN];
+ struct wpa_ssid_value ssid;
+ struct wpabuf *nr;
+ struct wpabuf *lci;
+ struct wpabuf *civic;
+ /* lci update time */
+ struct os_time lci_date;
+};
/**
* struct hostapd_data - hostapd per-BSS data structure
@@ -286,6 +296,8 @@ struct hostapd_data {
#ifdef CONFIG_MBO
unsigned int mbo_assoc_disallow;
#endif /* CONFIG_MBO */
+
+ struct dl_list nr_db;
};
diff --git a/src/ap/neighbor_db.c b/src/ap/neighbor_db.c
new file mode 100644
index 0000000..e3084e3
--- /dev/null
+++ b/src/ap/neighbor_db.c
@@ -0,0 +1,126 @@
+/*
+ * hostapd / Neighboring APs DB
+ * Copyright(c) 2013 - 2016 Intel Mobile Communications GmbH.
+ * Copyright(c) 2011 - 2016 Intel Corporation. All rights reserved.
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "utils/includes.h"
+#include "utils/common.h"
+#include "hostapd.h"
+#include "neighbor_db.h"
+
+
+static struct hostapd_neighbor_entry
+*hostapd_neighbor_get(struct hostapd_data *hapd, const u8 *bssid,
+ struct wpa_ssid_value *ssid)
+{
+ struct hostapd_neighbor_entry *nr;
+
+ dl_list_for_each(nr, &hapd->nr_db, struct hostapd_neighbor_entry, list)
+ if (os_memcmp(bssid, nr->bssid, ETH_ALEN) == 0 &&
+ ssid->ssid_len == nr->ssid.ssid_len &&
+ os_memcmp(ssid->ssid, nr->ssid.ssid, ssid->ssid_len) == 0)
+ return nr;
+ return NULL;
+}
+
+
+static void hostapd_neighbor_clear_entry(struct hostapd_neighbor_entry *nr)
+{
+ wpabuf_free(nr->nr);
+ wpabuf_free(nr->lci);
+ wpabuf_free(nr->civic);
+ nr->nr = NULL;
+ nr->lci = NULL;
+ nr->civic = NULL;
+ os_memset(nr->bssid, 0, sizeof(nr->bssid));
+ os_memset(&nr->ssid, 0, sizeof(nr->ssid));
+}
+
+
+static struct hostapd_neighbor_entry
+*hostapd_neighbor_add(struct hostapd_data *hapd)
+{
+ struct hostapd_neighbor_entry *nr;
+
+ nr = os_zalloc(sizeof(struct hostapd_neighbor_entry));
+ if (!nr)
+ return NULL;
+
+ dl_list_add(&hapd->nr_db, &nr->list);
+
+ return nr;
+}
+
+
+int hostapd_neighbor_set(struct hostapd_data *hapd, const u8 *bssid,
+ struct wpa_ssid_value *ssid, struct wpabuf *nr,
+ struct wpabuf *lci, struct wpabuf *civic)
+{
+ struct hostapd_neighbor_entry *entry;
+
+ entry = hostapd_neighbor_get(hapd, bssid, ssid);
+ if (!entry)
+ entry = hostapd_neighbor_add(hapd);
+ if (!entry)
+ return -1;
+
+ hostapd_neighbor_clear_entry(entry);
+
+ os_memcpy(entry->bssid, bssid, ETH_ALEN);
+ os_memcpy(&entry->ssid, ssid, sizeof(entry->ssid));
+
+ entry->nr = wpabuf_dup(nr);
+ if (!entry->nr)
+ goto free;
+
+ if (lci) {
+ entry->lci = wpabuf_dup(lci);
+ if (!entry->lci || os_get_time(&entry->lci_date))
+ goto free;
+ }
+
+ if (civic) {
+ entry->civic = wpabuf_dup(civic);
+ if (!entry->civic)
+ goto free;
+ }
+
+ return 0;
+free:
+ hostapd_neighbor_remove(hapd, bssid, ssid);
+ return -1;
+}
+
+
+int hostapd_neighbor_remove(struct hostapd_data *hapd, const u8 *bssid,
+ struct wpa_ssid_value *ssid)
+{
+ struct hostapd_neighbor_entry *nr;
+
+ nr = hostapd_neighbor_get(hapd, bssid, ssid);
+ if (!nr)
+ return -1;
+
+ hostapd_neighbor_clear_entry(nr);
+ dl_list_del(&nr->list);
+ os_free(nr);
+
+ return 0;
+}
+
+
+void hostpad_free_neighbor_db(struct hostapd_data *hapd)
+{
+ struct hostapd_neighbor_entry *nr, *prev;
+
+ dl_list_for_each_safe(nr, prev, &hapd->nr_db,
+ struct hostapd_neighbor_entry, list) {
+ hostapd_neighbor_clear_entry(nr);
+ dl_list_del(&nr->list);
+ os_free(nr);
+ }
+}
diff --git a/src/ap/neighbor_db.h b/src/ap/neighbor_db.h
new file mode 100644
index 0000000..35084a7
--- /dev/null
+++ b/src/ap/neighbor_db.h
@@ -0,0 +1,20 @@
+/*
+ * hostapd / Neighboring APs DB
+ * Copyright(c) 2013 - 2016 Intel Mobile Communications GmbH.
+ * Copyright(c) 2011 - 2016 Intel Corporation. All rights reserved.
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#ifndef NEIGHBOR_DB_H
+#define NEIGHBOR_DB_H
+
+int hostapd_neighbor_set(struct hostapd_data *hapd, const u8 *bssid,
+ struct wpa_ssid_value *ssid, struct wpabuf *nr,
+ struct wpabuf *lci, struct wpabuf *civic);
+int hostapd_neighbor_remove(struct hostapd_data *hapd, const u8 *bssid,
+ struct wpa_ssid_value *ssid);
+void hostpad_free_neighbor_db(struct hostapd_data *hapd);
+
+#endif /* NEIGHBOR_DB_H */
diff --git a/wpa_supplicant/Android.mk b/wpa_supplicant/Android.mk
index f65076c..d1adda5 100644
--- a/wpa_supplicant/Android.mk
+++ b/wpa_supplicant/Android.mk
@@ -797,6 +797,7 @@ OBJS += src/ap/ap_drv_ops.c
OBJS += src/ap/beacon.c
OBJS += src/ap/bss_load.c
OBJS += src/ap/eap_user_db.c
+OBJS += src/ap/neighbor_db.c
ifdef CONFIG_IEEE80211N
OBJS += src/ap/ieee802_11_ht.c
ifdef CONFIG_IEEE80211AC
diff --git a/wpa_supplicant/Makefile b/wpa_supplicant/Makefile
index 550d44b..06c26d2 100644
--- a/wpa_supplicant/Makefile
+++ b/wpa_supplicant/Makefile
@@ -844,6 +844,7 @@ OBJS += ../src/ap/ap_drv_ops.o
OBJS += ../src/ap/beacon.o
OBJS += ../src/ap/bss_load.o
OBJS += ../src/ap/eap_user_db.o
+OBJS += ../src/ap/neighbor_db.o
ifdef CONFIG_IEEE80211N
OBJS += ../src/ap/ieee802_11_ht.o
ifdef CONFIG_IEEE80211AC
--
1.9.1
More information about the Hostap
mailing list