3 * Copyright (c) 2011-2012, Qualcomm Atheros, Inc.
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #include "utils/includes.h"
11 #include "utils/common.h"
12 #include "common/ieee802_11_defs.h"
13 #include "rsn_supp/wpa.h"
14 #include "wpa_supplicant_i.h"
17 #define MAX_TFS_IE_LEN 1024
19 #ifdef CONFIG_IEEE80211V
21 /* get the TFS IE from driver */
22 static int ieee80211_11_get_tfs_ie(struct wpa_supplicant *wpa_s, u8 *buf,
23 u16 *buf_len, enum wnm_oper oper)
25 wpa_printf(MSG_DEBUG, "%s: TFS get operation %d", __func__, oper);
27 return wpa_drv_wnm_oper(wpa_s, oper, wpa_s->bssid, buf, buf_len);
31 /* set the TFS IE to driver */
32 static int ieee80211_11_set_tfs_ie(struct wpa_supplicant *wpa_s,
33 const u8 *addr, u8 *buf, u16 *buf_len,
36 wpa_printf(MSG_DEBUG, "%s: TFS set operation %d", __func__, oper);
38 return wpa_drv_wnm_oper(wpa_s, oper, addr, buf, buf_len);
42 /* MLME-SLEEPMODE.request */
43 int ieee802_11_send_wnmsleep_req(struct wpa_supplicant *wpa_s,
44 u8 action, u16 intval, struct wpabuf *tfs_req)
46 struct ieee80211_mgmt *mgmt;
49 struct wnm_sleep_element *wnmsleep_ie;
52 u16 wnmtfs_ie_len; /* possibly multiple IE(s) */
53 enum wnm_oper tfs_oper = action == 0 ? WNM_SLEEP_TFS_REQ_IE_ADD :
54 WNM_SLEEP_TFS_REQ_IE_NONE;
56 wpa_printf(MSG_DEBUG, "WNM: Request to send WNM-Sleep Mode Request "
57 "action=%s to " MACSTR,
58 action == 0 ? "enter" : "exit",
59 MAC2STR(wpa_s->bssid));
61 /* WNM-Sleep Mode IE */
62 wnmsleep_ie_len = sizeof(struct wnm_sleep_element);
63 wnmsleep_ie = os_zalloc(sizeof(struct wnm_sleep_element));
64 if (wnmsleep_ie == NULL)
66 wnmsleep_ie->eid = WLAN_EID_WNMSLEEP;
67 wnmsleep_ie->len = wnmsleep_ie_len - 2;
68 wnmsleep_ie->action_type = action;
69 wnmsleep_ie->status = WNM_STATUS_SLEEP_ACCEPT;
70 wnmsleep_ie->intval = host_to_le16(intval);
71 wpa_hexdump(MSG_DEBUG, "WNM: WNM-Sleep Mode element",
72 (u8 *) wnmsleep_ie, wnmsleep_ie_len);
76 wnmtfs_ie_len = wpabuf_len(tfs_req);
77 wnmtfs_ie = os_malloc(wnmtfs_ie_len);
78 if (wnmtfs_ie == NULL) {
82 os_memcpy(wnmtfs_ie, wpabuf_head(tfs_req), wnmtfs_ie_len);
84 wnmtfs_ie = os_zalloc(MAX_TFS_IE_LEN);
85 if (wnmtfs_ie == NULL) {
89 if (ieee80211_11_get_tfs_ie(wpa_s, wnmtfs_ie, &wnmtfs_ie_len,
96 wpa_hexdump(MSG_DEBUG, "WNM: TFS Request element",
97 (u8 *) wnmtfs_ie, wnmtfs_ie_len);
99 mgmt = os_zalloc(sizeof(*mgmt) + wnmsleep_ie_len + wnmtfs_ie_len);
101 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
102 "WNM-Sleep Request action frame");
106 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
107 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
108 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
109 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
110 WLAN_FC_STYPE_ACTION);
111 mgmt->u.action.category = WLAN_ACTION_WNM;
112 mgmt->u.action.u.wnm_sleep_req.action = WNM_SLEEP_MODE_REQ;
113 os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable, wnmsleep_ie,
115 /* copy TFS IE here */
116 if (wnmtfs_ie_len > 0) {
117 os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable +
118 wnmsleep_ie_len, wnmtfs_ie, wnmtfs_ie_len);
121 len = 1 + sizeof(mgmt->u.action.u.wnm_sleep_req) + wnmsleep_ie_len +
124 res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
125 wpa_s->own_addr, wpa_s->bssid,
126 &mgmt->u.action.category, len, 0);
128 wpa_printf(MSG_DEBUG, "Failed to send WNM-Sleep Request "
129 "(action=%d, intval=%d)", action, intval);
131 os_free(wnmsleep_ie);
139 static void ieee802_11_rx_wnmsleep_resp(struct wpa_supplicant *wpa_s,
140 const u8 *frm, int len)
143 * Action [1] | Diaglog Token [1] | Key Data Len [2] | Key Data |
144 * WNM-Sleep Mode IE | TFS Response IE
146 u8 *pos = (u8 *) frm; /* point to action field */
147 u16 key_len_total = le_to_host16(*((u16 *)(frm+2)));
149 struct wnm_sleep_element *wnmsleep_ie = NULL;
150 /* multiple TFS Resp IE (assuming consecutive) */
151 u8 *tfsresp_ie_start = NULL;
152 u8 *tfsresp_ie_end = NULL;
153 u16 tfsresp_ie_len = 0;
155 wpa_printf(MSG_DEBUG, "action=%d token = %d key_len_total = %d",
156 frm[0], frm[1], key_len_total);
157 pos += 4 + key_len_total;
158 while (pos - frm < len) {
159 u8 ie_len = *(pos + 1);
160 if (*pos == WLAN_EID_WNMSLEEP)
161 wnmsleep_ie = (struct wnm_sleep_element *) pos;
162 else if (*pos == WLAN_EID_TFS_RESP) {
163 if (!tfsresp_ie_start)
164 tfsresp_ie_start = pos;
165 tfsresp_ie_end = pos;
167 wpa_printf(MSG_DEBUG, "EID %d not recognized", *pos);
172 wpa_printf(MSG_DEBUG, "No WNM-Sleep IE found");
176 if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT) {
177 wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response "
178 "frame (action=%d, intval=%d)",
179 wnmsleep_ie->action_type, wnmsleep_ie->intval);
180 if (wnmsleep_ie->action_type == 0) {
181 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_CONFIRM,
182 wpa_s->bssid, NULL, NULL);
183 /* remove GTK/IGTK ?? */
185 /* set the TFS Resp IE(s) */
186 if (tfsresp_ie_start && tfsresp_ie_end &&
187 tfsresp_ie_end - tfsresp_ie_start >= 0) {
188 tfsresp_ie_len = (tfsresp_ie_end +
189 tfsresp_ie_end[1] + 2) -
191 wpa_printf(MSG_DEBUG, "TFS Resp IE(s) found");
193 * pass the TFS Resp IE(s) to driver for
196 if (ieee80211_11_set_tfs_ie(
200 WNM_SLEEP_TFS_RESP_IE_SET))
201 wpa_printf(MSG_DEBUG, "Fail to set "
204 } else if (wnmsleep_ie->action_type == 1) {
205 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM,
206 wpa_s->bssid, NULL, NULL);
207 /* Install GTK/IGTK */
209 /* point to key data field */
210 u8 *ptr = (u8 *) frm + 1 + 1 + 2;
211 while (ptr < (u8 *) frm + 4 + key_len_total) {
212 if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
213 gtk_len = *(ptr + 4);
214 wpa_wnmsleep_install_key(
216 WNM_SLEEP_SUBELEM_GTK,
219 #ifdef CONFIG_IEEE80211W
221 WNM_SLEEP_SUBELEM_IGTK) {
222 wpa_wnmsleep_install_key(
224 WNM_SLEEP_SUBELEM_IGTK,
226 ptr += 10 + WPA_IGTK_LEN;
227 #endif /* CONFIG_IEEE80211W */
229 break; /* skip the loop */
234 wpa_printf(MSG_DEBUG, "Reject recv WNM-Sleep Response frame "
235 "(action=%d, intval=%d)",
236 wnmsleep_ie->action_type, wnmsleep_ie->intval);
237 if (wnmsleep_ie->action_type == 0)
238 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_FAIL,
239 wpa_s->bssid, NULL, NULL);
240 else if (wnmsleep_ie->action_type == 1)
241 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_FAIL,
242 wpa_s->bssid, NULL, NULL);
247 void ieee802_11_rx_wnm_action(struct wpa_supplicant *wpa_s,
248 struct rx_action *action)
250 u8 *pos = (u8 *) action->data; /* point to action field */
252 /* u8 dialog_token = *pos++; */
255 case WNM_SLEEP_MODE_RESP:
256 ieee802_11_rx_wnmsleep_resp(wpa_s, action->data, action->len);
263 #endif /* CONFIG_IEEE80211V */