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/wpa_supplicant_i.h"
15 #include "../wpa_supplicant/driver_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,
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 /* WNM-Sleep Mode IE */
57 wnmsleep_ie_len = sizeof(struct wnm_sleep_element);
58 wnmsleep_ie = os_zalloc(sizeof(struct wnm_sleep_element));
59 if (wnmsleep_ie == NULL)
61 wnmsleep_ie->eid = WLAN_EID_WNMSLEEP;
62 wnmsleep_ie->len = wnmsleep_ie_len - 2;
63 wnmsleep_ie->action_type = action;
64 wnmsleep_ie->status = WNM_STATUS_SLEEP_ACCEPT;
65 wnmsleep_ie->intval = intval;
68 wnmtfs_ie = os_zalloc(MAX_TFS_IE_LEN);
69 if (wnmtfs_ie == NULL) {
73 if (ieee80211_11_get_tfs_ie(wpa_s, wnmtfs_ie, &wnmtfs_ie_len,
80 mgmt = os_zalloc(sizeof(*mgmt) + wnmsleep_ie_len + wnmtfs_ie_len);
82 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
83 "WNM-Sleep Request action frame");
87 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
88 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
89 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
90 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
91 WLAN_FC_STYPE_ACTION);
92 mgmt->u.action.category = WLAN_ACTION_WNM;
93 mgmt->u.action.u.wnm_sleep_req.action = WNM_SLEEP_MODE_REQ;
94 os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable, wnmsleep_ie,
96 /* copy TFS IE here */
97 if (wnmtfs_ie_len > 0) {
98 os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable +
99 wnmsleep_ie_len, wnmtfs_ie, wnmtfs_ie_len);
102 len = 1 + sizeof(mgmt->u.action.u.wnm_sleep_req) + wnmsleep_ie_len +
105 res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
106 wpa_s->own_addr, wpa_s->bssid,
107 &mgmt->u.action.category, len, 0);
109 wpa_printf(MSG_DEBUG, "Failed to send WNM-Sleep Request "
110 "(action=%d, intval=%d)", action, intval);
112 os_free(wnmsleep_ie);
120 static void ieee802_11_rx_wnmsleep_resp(struct wpa_supplicant *wpa_s,
121 const u8 *frm, int len)
124 * Action [1] | Diaglog Token [1] | Key Data Len [2] | Key Data |
125 * WNM-Sleep Mode IE | TFS Response IE
127 u8 *pos = (u8 *) frm; /* point to action field */
128 u16 key_len_total = le_to_host16(*((u16 *)(frm+2)));
130 struct wnm_sleep_element *wnmsleep_ie = NULL;
131 /* multiple TFS Resp IE (assuming consecutive) */
132 u8 *tfsresp_ie_start = NULL;
133 u8 *tfsresp_ie_end = NULL;
134 u16 tfsresp_ie_len = 0;
136 wpa_printf(MSG_DEBUG, "action=%d token = %d key_len_total = %d",
137 frm[0], frm[1], key_len_total);
138 pos += 4 + key_len_total;
139 while (pos - frm < len) {
140 u8 ie_len = *(pos + 1);
141 if (*pos == WLAN_EID_WNMSLEEP)
142 wnmsleep_ie = (struct wnm_sleep_element *) pos;
143 else if (*pos == WLAN_EID_TFS_RESP) {
144 if (!tfsresp_ie_start)
145 tfsresp_ie_start = pos;
146 tfsresp_ie_end = pos;
148 wpa_printf(MSG_DEBUG, "EID %d not recognized", *pos);
153 wpa_printf(MSG_DEBUG, "No WNM-Sleep IE found");
157 if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT) {
158 wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response "
159 "frame (action=%d, intval=%d)",
160 wnmsleep_ie->action_type, wnmsleep_ie->intval);
161 if (wnmsleep_ie->action_type == 0) {
162 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_CONFIRM,
163 wpa_s->bssid, NULL, NULL);
164 /* remove GTK/IGTK ?? */
166 /* set the TFS Resp IE(s) */
167 if (tfsresp_ie_start && tfsresp_ie_end &&
168 tfsresp_ie_end - tfsresp_ie_start >= 0) {
169 tfsresp_ie_len = (tfsresp_ie_end +
170 tfsresp_ie_end[1] + 2) -
172 wpa_printf(MSG_DEBUG, "TFS Resp IE(s) found");
174 * pass the TFS Resp IE(s) to driver for
177 if (ieee80211_11_set_tfs_ie(
181 WNM_SLEEP_TFS_RESP_IE_SET))
182 wpa_printf(MSG_DEBUG, "Fail to set "
185 } else if (wnmsleep_ie->action_type == 1) {
186 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM,
187 wpa_s->bssid, NULL, NULL);
188 /* Install GTK/IGTK */
190 /* point to key data field */
191 u8 *ptr = (u8 *) frm + 1 + 1 + 2;
192 while (ptr < (u8 *) frm + 4 + key_len_total) {
193 if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
194 gtk_len = *(ptr + 4);
195 wpa_wnmsleep_install_key(
197 WNM_SLEEP_SUBELEM_GTK,
200 #ifdef CONFIG_IEEE80211W
202 WNM_SLEEP_SUBELEM_IGTK) {
203 wpa_wnmsleep_install_key(
205 WNM_SLEEP_SUBELEM_IGTK,
207 ptr += 10 + WPA_IGTK_LEN;
208 #endif /* CONFIG_IEEE80211W */
210 break; /* skip the loop */
215 wpa_printf(MSG_DEBUG, "Reject recv WNM-Sleep Response frame "
216 "(action=%d, intval=%d)",
217 wnmsleep_ie->action_type, wnmsleep_ie->intval);
218 if (wnmsleep_ie->action_type == 0)
219 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_FAIL,
220 wpa_s->bssid, NULL, NULL);
221 else if (wnmsleep_ie->action_type == 1)
222 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_FAIL,
223 wpa_s->bssid, NULL, NULL);
228 void ieee802_11_rx_wnm_action(struct wpa_supplicant *wpa_s,
229 struct rx_action *action)
231 u8 *pos = (u8 *) action->data; /* point to action field */
233 /* u8 dialog_token = *pos++; */
236 case WNM_SLEEP_MODE_RESP:
237 ieee802_11_rx_wnmsleep_resp(wpa_s, action->data, action->len);
244 #endif /* CONFIG_IEEE80211V */