[PATCH v2 11/19] hostapd: Add LCI request
Ilan Peer
ilan.peer at intel.com
Wed Apr 6 06:31:08 PDT 2016
From: David Spinadel <david.spinadel at intel.com>
Add an API to hostapd to request LCI from an associated station
using radio measurement.
Signed-off-by: David Spinadel <david.spinadel at intel.com>
---
hostapd/ctrl_iface.c | 19 ++++++
hostapd/hostapd_cli.c | 19 ++++++
src/ap/hostapd.c | 3 +-
src/ap/hostapd.h | 3 +
src/ap/rrm.c | 158 +++++++++++++++++++++++++++++++++++++++++++
src/ap/rrm.h | 3 +
src/common/ieee802_11_defs.h | 2 +
7 files changed, 206 insertions(+), 1 deletion(-)
diff --git a/hostapd/ctrl_iface.c b/hostapd/ctrl_iface.c
index bfe3731..9a188b7 100644
--- a/hostapd/ctrl_iface.c
+++ b/hostapd/ctrl_iface.c
@@ -53,6 +53,7 @@
#include "config_file.h"
#include "ctrl_iface.h"
#include "ap/neighbor_db.h"
+#include "ap/rrm.h"
#define HOSTAPD_CLI_DUP_VALUE_MAX_LEN 256
@@ -2072,6 +2073,21 @@ static int hostapd_ctrl_iface_track_sta_list(struct hostapd_data *hapd,
#endif /* NEED_AP_MLME */
+static int hostapd_ctrl_iface_req_lci(struct hostapd_data *hapd,
+ const char *cmd)
+{
+ u8 addr[ETH_ALEN];
+
+ if (hwaddr_aton(cmd, addr)) {
+ wpa_printf(MSG_ERROR,
+ "CTRL: Request LCI: Inavalid MAC address");
+ return -1;
+ }
+
+ return hostapd_send_lci_req(hapd, addr);
+}
+
+
static int hostapd_ctrl_iface_set_neighbor(struct hostapd_data *hapd, char *buf)
{
struct wpa_ssid_value ssid;
@@ -2442,6 +2458,9 @@ static int hostapd_ctrl_iface_receive_process(struct hostapd_data *hapd,
} else if (os_strncmp(buf, "REMOVE_NEIGHBOR ", 16) == 0) {
if (hostapd_ctrl_iface_remove_neighbor(hapd, buf + 16))
reply_len = -1;
+ } else if (os_strncmp(buf, "REQ_LCI ", 8) == 0) {
+ if (hostapd_ctrl_iface_req_lci(hapd, buf + 8))
+ 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 863db42..b2e0de1 100644
--- a/hostapd/hostapd_cli.c
+++ b/hostapd/hostapd_cli.c
@@ -1139,6 +1139,24 @@ static int hostapd_cli_cmd_remove_neighbor(struct wpa_ctrl *ctrl, int argc,
}
+static int hostapd_cli_req_lci(struct wpa_ctrl *ctrl, int argc, char *argv[])
+{
+ char cmd[256];
+ int res;
+
+ if (argc != 1) {
+ printf("Invalid req_lci command - requires destination address\n");
+ return -1;
+ }
+
+ res = os_snprintf(cmd, sizeof(cmd), "REQ_LCI %s", argv[0]);
+ if (os_snprintf_error(sizeof(cmd), res)) {
+ printf("Too long REQ_LCI 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[])
@@ -1250,6 +1268,7 @@ static const struct hostapd_cli_cmd hostapd_cli_commands[] = {
{ "pmksa_flush", hostapd_cli_cmd_pmksa_flush },
{ "set_neighbor", hostapd_cli_cmd_set_neighbor },
{ "remove_neighbor", hostapd_cli_cmd_remove_neighbor },
+ { "req_lci", hostapd_cli_req_lci },
{ NULL, NULL }
};
diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c
index 7e30fa9..99ba768 100644
--- a/src/ap/hostapd.c
+++ b/src/ap/hostapd.c
@@ -44,6 +44,7 @@
#include "dhcp_snoop.h"
#include "ndisc_snoop.h"
#include "neighbor_db.h"
+#include "rrm.h"
static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
@@ -337,7 +338,7 @@ static void hostapd_free_hapd_data(struct hostapd_data *hapd)
hapd->mesh_pending_auth = NULL;
#endif /* CONFIG_MESH */
- hostpad_free_neighbor_db(hapd);
+ hostapd_clean_rrm(hapd);
}
diff --git a/src/ap/hostapd.h b/src/ap/hostapd.h
index e2c4913..c3d7807 100644
--- a/src/ap/hostapd.h
+++ b/src/ap/hostapd.h
@@ -298,6 +298,9 @@ struct hostapd_data {
#endif /* CONFIG_MBO */
struct dl_list nr_db;
+
+ u8 lci_req_token;
+ int lci_req_active;
};
diff --git a/src/ap/rrm.c b/src/ap/rrm.c
index 7df25ae..3aaa2cf 100644
--- a/src/ap/rrm.c
+++ b/src/ap/rrm.c
@@ -11,6 +11,70 @@
#include "utils/common.h"
#include "hostapd.h"
#include "ap_drv_ops.h"
+#include "sta_info.h"
+#include "eloop.h"
+#include "neighbor_db.h"
+
+#define HOSTAPD_RRM_REQUEST_TIMEOUT 5
+
+
+static void hoastapd_lci_rep_timeout_handler(void *eloop_data, void *user_ctx)
+{
+ struct hostapd_data *hapd = eloop_data;
+
+ wpa_printf(MSG_DEBUG, "RRM: LCI request (token %d) timed out",
+ hapd->lci_req_token);
+ hapd->lci_req_active = 0;
+}
+
+
+static void hostapd_handle_lci_report(struct hostapd_data *hapd, u8 token,
+ const u8 *pos, size_t len)
+{
+ if (!hapd->lci_req_active || hapd->lci_req_token != token) {
+ wpa_printf(MSG_DEBUG, "Unexpected LCI report, token %d", token);
+ } else {
+ hapd->lci_req_active = 0;
+ eloop_cancel_timeout(hoastapd_lci_rep_timeout_handler, hapd,
+ NULL);
+ wpa_printf(MSG_DEBUG, "LCI report token %d len %zu", token,
+ len);
+ }
+}
+
+
+static void hostapd_handle_radio_msmt_report(struct hostapd_data *hapd,
+ const u8 *buf, size_t len)
+{
+ struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
+ const u8 *pos, *ie;
+ u8 token;
+
+ token = mgmt->u.action.u.rrm.dialog_token;
+ pos = mgmt->u.action.u.rrm.variable;
+
+ while ((ie = get_ie(pos, len, WLAN_EID_MEASURE_REPORT))) {
+ if (ie[1] < 5) {
+ wpa_printf(MSG_DEBUG, "Bad measure report IE");
+ break;
+ }
+
+ wpa_printf(MSG_DEBUG, "Measurement report type %u", ie[4]);
+
+ switch (ie[4]) {
+ case MEASURE_TYPE_LCI:
+ hostapd_handle_lci_report(hapd, token, ie + 2, ie[1]);
+ break;
+ default:
+ wpa_printf(MSG_DEBUG,
+ "Measurement report type %u is not supported",
+ ie[4]);
+ }
+
+ len -= ie - pos + ie[1] + 2;
+ pos = ie + ie[1] + 2;
+ }
+}
static u16 hostapd_parse_location_lci_req_age(const u8 *buf, size_t len)
@@ -225,6 +289,9 @@ void hostapd_handle_radio_measurement(struct hostapd_data *hapd,
mgmt->u.action.u.rrm.action);
switch (mgmt->u.action.u.rrm.action) {
+ case WLAN_RRM_RADIO_MEASUREMENT_REPORT:
+ hostapd_handle_radio_msmt_report(hapd, buf, len);
+ break;
case WLAN_RRM_NEIGHBOR_REPORT_REQUEST:
hostapd_handle_nei_report_req(hapd, buf, len);
break;
@@ -233,3 +300,94 @@ void hostapd_handle_radio_measurement(struct hostapd_data *hapd,
mgmt->u.action.u.rrm.action);
}
}
+
+
+int hostapd_send_lci_req(struct hostapd_data *hapd, const u8 *addr)
+{
+ struct wpabuf *buf;
+ struct sta_info *sta = ap_get_sta(hapd, addr);
+ int ret;
+
+ if (!sta) {
+ wpa_printf(MSG_ERROR,
+ "Request LCI: destination address isn't in station list");
+ return -1;
+ }
+
+ if (!(sta->flags & WLAN_STA_AUTHORIZED)) {
+ wpa_printf(MSG_ERROR,
+ "Request LCI: destination address isn't connected");
+ return -1;
+ }
+
+ if (!(sta->rrm_enabled_capa[1] & WLAN_RRM_CAPS_LCI_MEASUREMENT)) {
+ wpa_printf(MSG_ERROR,
+ "Request LCI: station doesn't support LCI in RRM");
+ return -1;
+ }
+
+ if (hapd->lci_req_active) {
+ wpa_printf(MSG_DEBUG,
+ "Request LCI: LCI request is already in process, overriding.");
+ hapd->lci_req_active = 0;
+ eloop_cancel_timeout(hoastapd_lci_rep_timeout_handler, hapd,
+ NULL);
+ }
+
+ /* Measurement request (5) + Measurement IE with LCI (10) */
+ buf = wpabuf_alloc(5 + 10);
+ if (!buf)
+ return -1;
+
+ hapd->lci_req_token++;
+ /* For wraparounds - the token must be non zero */
+ if (!hapd->lci_req_token)
+ hapd->lci_req_token++;
+
+
+ wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT);
+ wpabuf_put_u8(buf, WLAN_RRM_RADIO_MEASUREMENT_REQUEST);
+ wpabuf_put_u8(buf, hapd->lci_req_token);
+ /* Num of repetiotions */
+ wpabuf_put_le16(buf, 0);
+
+ wpabuf_put_u8(buf, WLAN_EID_MEASURE_REQUEST);
+ wpabuf_put_u8(buf, 3 + 1 + 4);
+
+ /* Measurement token */
+ wpabuf_put_u8(buf, 1);
+ /* Parallel and enable bits are 0, duration, request and report are
+ * reserved
+ */
+ wpabuf_put_u8(buf, 0);
+ wpabuf_put_u8(buf, MEASURE_TYPE_LCI);
+
+ wpabuf_put_u8(buf, LOCATION_SUBJECT_REMOTE);
+
+ wpabuf_put_u8(buf, LCI_REQ_SUBELEMENT_MAX_AGE);
+ wpabuf_put_u8(buf, 2);
+ wpabuf_put_le16(buf, 0xffff);
+
+ ret = hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
+ wpabuf_head(buf), wpabuf_len(buf));
+ wpabuf_free(buf);
+ if (ret)
+ return ret;
+
+ hapd->lci_req_active = 1;
+
+ eloop_register_timeout(HOSTAPD_RRM_REQUEST_TIMEOUT, 0,
+ hoastapd_lci_rep_timeout_handler,
+ hapd, NULL);
+
+ return 0;
+}
+
+
+void hostapd_clean_rrm(struct hostapd_data *hapd)
+{
+ hostpad_free_neighbor_db(hapd);
+ eloop_cancel_timeout(hoastapd_lci_rep_timeout_handler, hapd,
+ NULL);
+ hapd->lci_req_active = 0;
+}
diff --git a/src/ap/rrm.h b/src/ap/rrm.h
index 3df49ab..08ae438 100644
--- a/src/ap/rrm.h
+++ b/src/ap/rrm.h
@@ -13,4 +13,7 @@
void hostapd_handle_radio_measurement(struct hostapd_data *hapd,
const u8 *buf, size_t len);
+int hostapd_send_lci_req(struct hostapd_data *hapd, const u8 *addr);
+void hostapd_clean_rrm(struct hostapd_data *hapd);
+
#endif /* RRM_H */
diff --git a/src/common/ieee802_11_defs.h b/src/common/ieee802_11_defs.h
index 3a0ef21..5f548dd 100644
--- a/src/common/ieee802_11_defs.h
+++ b/src/common/ieee802_11_defs.h
@@ -366,6 +366,8 @@
/* byte 1 (out of 5) */
#define WLAN_RRM_CAPS_LINK_MEASUREMENT BIT(0)
#define WLAN_RRM_CAPS_NEIGHBOR_REPORT BIT(1)
+/* byte 2 (out of 5) */
+#define WLAN_RRM_CAPS_LCI_MEASUREMENT BIT(4)
/* Timeout Interval Type */
#define WLAN_TIMEOUT_REASSOC_DEADLINE 1
--
1.9.1
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