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authorJouni Malinen <jouni@qca.qualcomm.com>2014-11-22 09:31:03 (GMT)
committerJouni Malinen <j@w1.fi>2014-11-22 14:34:34 (GMT)
commita30dff07fb18421551405bb5c41814675d9436e8 (patch)
treef238efe927b72c5a24444db697324a75f340cfec /src/ap
parent64d04af5cc6450d2c4833860496f2367faecf275 (diff)
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Add BSS_TM_REQ command to send BSS Transition Management Request
hostapd control interface can now be used to request transmission of a BSS Transition Management Request frame to a specified station. Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Diffstat (limited to 'src/ap')
-rw-r--r--src/ap/wnm_ap.c122
-rw-r--r--src/ap/wnm_ap.h6
2 files changed, 104 insertions, 24 deletions
diff --git a/src/ap/wnm_ap.c b/src/ap/wnm_ap.c
index cf25dbb..a24900a 100644
--- a/src/ap/wnm_ap.c
+++ b/src/ap/wnm_ap.c
@@ -1,6 +1,6 @@
/*
* hostapd - WNM
- * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
+ * Copyright (c) 2011-2014, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
@@ -436,6 +436,34 @@ int wnm_send_disassoc_imminent(struct hostapd_data *hapd,
}
+static void set_disassoc_timer(struct hostapd_data *hapd, struct sta_info *sta,
+ int disassoc_timer)
+{
+ int timeout, beacon_int;
+
+ /*
+ * Prevent STA from reconnecting using cached PMKSA to force
+ * full authentication with the authentication server (which may
+ * decide to reject the connection),
+ */
+ wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
+
+ beacon_int = hapd->iconf->beacon_int;
+ if (beacon_int < 1)
+ beacon_int = 100; /* best guess */
+ /* Calculate timeout in ms based on beacon_int in TU */
+ timeout = disassoc_timer * beacon_int * 128 / 125;
+ wpa_printf(MSG_DEBUG, "Disassociation timer for " MACSTR
+ " set to %d ms", MAC2STR(sta->addr), timeout);
+
+ sta->timeout_next = STA_DISASSOC_FROM_CLI;
+ eloop_cancel_timeout(ap_handle_timer, hapd, sta);
+ eloop_register_timeout(timeout / 1000,
+ timeout % 1000 * 1000,
+ ap_handle_timer, hapd, sta);
+}
+
+
int wnm_send_ess_disassoc_imminent(struct hostapd_data *hapd,
struct sta_info *sta, const char *url,
int disassoc_timer)
@@ -477,30 +505,78 @@ int wnm_send_ess_disassoc_imminent(struct hostapd_data *hapd,
return -1;
}
- /* send disassociation frame after time-out */
if (disassoc_timer) {
- int timeout, beacon_int;
+ /* send disassociation frame after time-out */
+ set_disassoc_timer(hapd, sta, disassoc_timer);
+ }
- /*
- * Prevent STA from reconnecting using cached PMKSA to force
- * full authentication with the authentication server (which may
- * decide to reject the connection),
- */
- wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
-
- beacon_int = hapd->iconf->beacon_int;
- if (beacon_int < 1)
- beacon_int = 100; /* best guess */
- /* Calculate timeout in ms based on beacon_int in TU */
- timeout = disassoc_timer * beacon_int * 128 / 125;
- wpa_printf(MSG_DEBUG, "Disassociation timer for " MACSTR
- " set to %d ms", MAC2STR(sta->addr), timeout);
-
- sta->timeout_next = STA_DISASSOC_FROM_CLI;
- eloop_cancel_timeout(ap_handle_timer, hapd, sta);
- eloop_register_timeout(timeout / 1000,
- timeout % 1000 * 1000,
- ap_handle_timer, hapd, sta);
+ return 0;
+}
+
+
+int wnm_send_bss_tm_req(struct hostapd_data *hapd, struct sta_info *sta,
+ u8 req_mode, int disassoc_timer, u8 valid_int,
+ const u8 *bss_term_dur, const char *url,
+ const u8 *nei_rep, size_t nei_rep_len)
+{
+ u8 *buf, *pos;
+ struct ieee80211_mgmt *mgmt;
+ size_t url_len;
+
+ wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Request to "
+ MACSTR " req_mode=0x%x disassoc_timer=%d valid_int=0x%x",
+ MAC2STR(sta->addr), req_mode, disassoc_timer, valid_int);
+ buf = os_zalloc(1000 + nei_rep_len);
+ if (buf == NULL)
+ return -1;
+ mgmt = (struct ieee80211_mgmt *) buf;
+ mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_ACTION);
+ os_memcpy(mgmt->da, sta->addr, ETH_ALEN);
+ os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
+ os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
+ mgmt->u.action.category = WLAN_ACTION_WNM;
+ mgmt->u.action.u.bss_tm_req.action = WNM_BSS_TRANS_MGMT_REQ;
+ mgmt->u.action.u.bss_tm_req.dialog_token = 1;
+ mgmt->u.action.u.bss_tm_req.req_mode = req_mode;
+ mgmt->u.action.u.bss_tm_req.disassoc_timer =
+ host_to_le16(disassoc_timer);
+ mgmt->u.action.u.bss_tm_req.validity_interval = valid_int;
+
+ pos = mgmt->u.action.u.bss_tm_req.variable;
+
+ if ((req_mode & WNM_BSS_TM_REQ_BSS_TERMINATION_INCLUDED) &&
+ bss_term_dur) {
+ os_memcpy(pos, bss_term_dur, 12);
+ pos += 12;
+ }
+
+ if (url) {
+ /* Session Information URL */
+ url_len = os_strlen(url);
+ if (url_len > 255)
+ return -1;
+ *pos++ = url_len;
+ os_memcpy(pos, url, url_len);
+ pos += url_len;
+ }
+
+ if (nei_rep) {
+ os_memcpy(pos, nei_rep, nei_rep_len);
+ pos += nei_rep_len;
+ }
+
+ if (hostapd_drv_send_mlme(hapd, buf, pos - buf, 0) < 0) {
+ wpa_printf(MSG_DEBUG,
+ "Failed to send BSS Transition Management Request frame");
+ os_free(buf);
+ return -1;
+ }
+ os_free(buf);
+
+ if (disassoc_timer) {
+ /* send disassociation frame after time-out */
+ set_disassoc_timer(hapd, sta, disassoc_timer);
}
return 0;
diff --git a/src/ap/wnm_ap.h b/src/ap/wnm_ap.h
index eeaf5ec..7789307 100644
--- a/src/ap/wnm_ap.h
+++ b/src/ap/wnm_ap.h
@@ -1,6 +1,6 @@
/*
* IEEE 802.11v WNM related functions and structures
- * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
+ * Copyright (c) 2011-2014, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
@@ -18,5 +18,9 @@ int wnm_send_disassoc_imminent(struct hostapd_data *hapd,
int wnm_send_ess_disassoc_imminent(struct hostapd_data *hapd,
struct sta_info *sta, const char *url,
int disassoc_timer);
+int wnm_send_bss_tm_req(struct hostapd_data *hapd, struct sta_info *sta,
+ u8 req_mode, int disassoc_timer, u8 valid_int,
+ const u8 *bss_term_dur, const char *url,
+ const u8 *nei_rep, size_t nei_rep_len);
#endif /* WNM_AP_H */