[thirdparty/hostap.git] / wpa_supplicant / wnm_sta.c

/*
 * wpa_supplicant - WNM
 * Copyright (c) 2011-2012, Qualcomm Atheros, Inc.
 *
 * 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 "common/ieee802_11_defs.h"
#include "rsn_supp/wpa.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"

#define MAX_TFS_IE_LEN  1024


/* get the TFS IE from driver */
static int ieee80211_11_get_tfs_ie(struct wpa_supplicant *wpa_s, u8 *buf,
				   u16 *buf_len, enum wnm_oper oper)
{
	wpa_printf(MSG_DEBUG, "%s: TFS get operation %d", __func__, oper);

	return wpa_drv_wnm_oper(wpa_s, oper, wpa_s->bssid, buf, buf_len);
}


/* set the TFS IE to driver */
static int ieee80211_11_set_tfs_ie(struct wpa_supplicant *wpa_s,
				   const u8 *addr, u8 *buf, u16 *buf_len,
				   enum wnm_oper oper)
{
	wpa_printf(MSG_DEBUG, "%s: TFS set operation %d", __func__, oper);

	return wpa_drv_wnm_oper(wpa_s, oper, addr, buf, buf_len);
}


/* MLME-SLEEPMODE.request */
int ieee802_11_send_wnmsleep_req(struct wpa_supplicant *wpa_s,
				 u8 action, u16 intval, struct wpabuf *tfs_req)
{
	struct ieee80211_mgmt *mgmt;
	int res;
	size_t len;
	struct wnm_sleep_element *wnmsleep_ie;
	u8 *wnmtfs_ie;
	u8 wnmsleep_ie_len;
	u16 wnmtfs_ie_len;  /* possibly multiple IE(s) */
	enum wnm_oper tfs_oper = action == 0 ? WNM_SLEEP_TFS_REQ_IE_ADD :
		WNM_SLEEP_TFS_REQ_IE_NONE;

	wpa_printf(MSG_DEBUG, "WNM: Request to send WNM-Sleep Mode Request "
		   "action=%s to " MACSTR,
		   action == 0 ? "enter" : "exit",
		   MAC2STR(wpa_s->bssid));

	/* WNM-Sleep Mode IE */
	wnmsleep_ie_len = sizeof(struct wnm_sleep_element);
	wnmsleep_ie = os_zalloc(sizeof(struct wnm_sleep_element));
	if (wnmsleep_ie == NULL)
		return -1;
	wnmsleep_ie->eid = WLAN_EID_WNMSLEEP;
	wnmsleep_ie->len = wnmsleep_ie_len - 2;
	wnmsleep_ie->action_type = action;
	wnmsleep_ie->status = WNM_STATUS_SLEEP_ACCEPT;
	wnmsleep_ie->intval = host_to_le16(intval);
	wpa_hexdump(MSG_DEBUG, "WNM: WNM-Sleep Mode element",
		    (u8 *) wnmsleep_ie, wnmsleep_ie_len);

	/* TFS IE(s) */
	if (tfs_req) {
		wnmtfs_ie_len = wpabuf_len(tfs_req);
		wnmtfs_ie = os_malloc(wnmtfs_ie_len);
		if (wnmtfs_ie == NULL) {
			os_free(wnmsleep_ie);
			return -1;
		}
		os_memcpy(wnmtfs_ie, wpabuf_head(tfs_req), wnmtfs_ie_len);
	} else {
		wnmtfs_ie = os_zalloc(MAX_TFS_IE_LEN);
		if (wnmtfs_ie == NULL) {
			os_free(wnmsleep_ie);
			return -1;
		}
		if (ieee80211_11_get_tfs_ie(wpa_s, wnmtfs_ie, &wnmtfs_ie_len,
					    tfs_oper)) {
			wnmtfs_ie_len = 0;
			os_free(wnmtfs_ie);
			wnmtfs_ie = NULL;
		}
	}
	wpa_hexdump(MSG_DEBUG, "WNM: TFS Request element",
		    (u8 *) wnmtfs_ie, wnmtfs_ie_len);

	mgmt = os_zalloc(sizeof(*mgmt) + wnmsleep_ie_len + wnmtfs_ie_len);
	if (mgmt == NULL) {
		wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
			   "WNM-Sleep Request action frame");
		os_free(wnmsleep_ie);
		os_free(wnmtfs_ie);
		return -1;
	}

	os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
	os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
	os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
	mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
					   WLAN_FC_STYPE_ACTION);
	mgmt->u.action.category = WLAN_ACTION_WNM;
	mgmt->u.action.u.wnm_sleep_req.action = WNM_SLEEP_MODE_REQ;
	mgmt->u.action.u.wnm_sleep_req.dialogtoken = 1;
	os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable, wnmsleep_ie,
		  wnmsleep_ie_len);
	/* copy TFS IE here */
	if (wnmtfs_ie_len > 0) {
		os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable +
			  wnmsleep_ie_len, wnmtfs_ie, wnmtfs_ie_len);
	}

	len = 1 + sizeof(mgmt->u.action.u.wnm_sleep_req) + wnmsleep_ie_len +
		wnmtfs_ie_len;

	res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
				  wpa_s->own_addr, wpa_s->bssid,
				  &mgmt->u.action.category, len, 0);
	if (res < 0)
		wpa_printf(MSG_DEBUG, "Failed to send WNM-Sleep Request "
			   "(action=%d, intval=%d)", action, intval);

	os_free(wnmsleep_ie);
	os_free(wnmtfs_ie);
	os_free(mgmt);

	return res;
}


static void wnm_sleep_mode_enter_success(struct wpa_supplicant *wpa_s,
					 u8 *tfsresp_ie_start,
					 u8 *tfsresp_ie_end)
{
	wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_CONFIRM,
			 wpa_s->bssid, NULL, NULL);
	/* remove GTK/IGTK ?? */

	/* set the TFS Resp IE(s) */
	if (tfsresp_ie_start && tfsresp_ie_end &&
	    tfsresp_ie_end - tfsresp_ie_start >= 0) {
		u16 tfsresp_ie_len;
		tfsresp_ie_len = (tfsresp_ie_end + tfsresp_ie_end[1] + 2) -
			tfsresp_ie_start;
		wpa_printf(MSG_DEBUG, "TFS Resp IE(s) found");
		/* pass the TFS Resp IE(s) to driver for processing */
		if (ieee80211_11_set_tfs_ie(wpa_s, wpa_s->bssid,
					    tfsresp_ie_start,
					    &tfsresp_ie_len,
					    WNM_SLEEP_TFS_RESP_IE_SET))
			wpa_printf(MSG_DEBUG, "WNM: Fail to set TFS Resp IE");
	}
}


static void wnm_sleep_mode_exit_success(struct wpa_supplicant *wpa_s,
					const u8 *frm, u16 key_len_total)
{
	u8 *ptr, *end;
	u8 gtk_len;

	wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM,  wpa_s->bssid,
			 NULL, NULL);

	/* Install GTK/IGTK */

	/* point to key data field */
	ptr = (u8 *) frm + 1 + 1 + 2;
	end = ptr + key_len_total;
	wpa_hexdump_key(MSG_DEBUG, "WNM: Key Data", ptr, key_len_total);

	while (ptr + 1 < end) {
		if (ptr + 2 + ptr[1] > end) {
			wpa_printf(MSG_DEBUG, "WNM: Invalid Key Data element "
				   "length");
			if (end > ptr) {
				wpa_hexdump(MSG_DEBUG, "WNM: Remaining data",
					    ptr, end - ptr);
			}
			break;
		}
		if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
			if (ptr[1] < 11 + 5) {
				wpa_printf(MSG_DEBUG, "WNM: Too short GTK "
					   "subelem");
				break;
			}
			gtk_len = *(ptr + 4);
			if (ptr[1] < 11 + gtk_len ||
			    gtk_len < 5 || gtk_len > 32) {
				wpa_printf(MSG_DEBUG, "WNM: Invalid GTK "
					   "subelem");
				break;
			}
			wpa_wnmsleep_install_key(
				wpa_s->wpa,
				WNM_SLEEP_SUBELEM_GTK,
				ptr);
			ptr += 13 + gtk_len;
#ifdef CONFIG_IEEE80211W
		} else if (*ptr == WNM_SLEEP_SUBELEM_IGTK) {
			if (ptr[1] < 2 + 6 + WPA_IGTK_LEN) {
				wpa_printf(MSG_DEBUG, "WNM: Too short IGTK "
					   "subelem");
				break;
			}
			wpa_wnmsleep_install_key(wpa_s->wpa,
						 WNM_SLEEP_SUBELEM_IGTK, ptr);
			ptr += 10 + WPA_IGTK_LEN;
#endif /* CONFIG_IEEE80211W */
		} else
			break; /* skip the loop */
	}
}


static void ieee802_11_rx_wnmsleep_resp(struct wpa_supplicant *wpa_s,
					const u8 *frm, int len)
{
	/*
	 * Action [1] | Diaglog Token [1] | Key Data Len [2] | Key Data |
	 * WNM-Sleep Mode IE | TFS Response IE
	 */
	u8 *pos = (u8 *) frm; /* point to action field */
	u16 key_len_total = le_to_host16(*((u16 *)(frm+2)));
	struct wnm_sleep_element *wnmsleep_ie = NULL;
	/* multiple TFS Resp IE (assuming consecutive) */
	u8 *tfsresp_ie_start = NULL;
	u8 *tfsresp_ie_end = NULL;

	wpa_printf(MSG_DEBUG, "action=%d token = %d key_len_total = %d",
		   frm[0], frm[1], key_len_total);
	pos += 4 + key_len_total;
	if (pos > frm + len) {
		wpa_printf(MSG_INFO, "WNM: Too short frame for Key Data field");
		return;
	}
	while (pos - frm < len) {
		u8 ie_len = *(pos + 1);
		if (pos + 2 + ie_len > frm + len) {
			wpa_printf(MSG_INFO, "WNM: Invalid IE len %u", ie_len);
			break;
		}
		wpa_hexdump(MSG_DEBUG, "WNM: Element", pos, 2 + ie_len);
		if (*pos == WLAN_EID_WNMSLEEP)
			wnmsleep_ie = (struct wnm_sleep_element *) pos;
		else if (*pos == WLAN_EID_TFS_RESP) {
			if (!tfsresp_ie_start)
				tfsresp_ie_start = pos;
			tfsresp_ie_end = pos;
		} else
			wpa_printf(MSG_DEBUG, "EID %d not recognized", *pos);
		pos += ie_len + 2;
	}

	if (!wnmsleep_ie) {
		wpa_printf(MSG_DEBUG, "No WNM-Sleep IE found");
		return;
	}

	if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT ||
	    wnmsleep_ie->status == WNM_STATUS_SLEEP_EXIT_ACCEPT_GTK_UPDATE) {
		wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response "
			   "frame (action=%d, intval=%d)",
			   wnmsleep_ie->action_type, wnmsleep_ie->intval);
		if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER) {
			wnm_sleep_mode_enter_success(wpa_s, tfsresp_ie_start,
						     tfsresp_ie_end);
		} else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT) {
			wnm_sleep_mode_exit_success(wpa_s, frm, key_len_total);
		}
	} else {
		wpa_printf(MSG_DEBUG, "Reject recv WNM-Sleep Response frame "
			   "(action=%d, intval=%d)",
			   wnmsleep_ie->action_type, wnmsleep_ie->intval);
		if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER)
			wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_FAIL,
					 wpa_s->bssid, NULL, NULL);
		else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT)
			wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_FAIL,
					 wpa_s->bssid, NULL, NULL);
	}
}


void ieee802_11_rx_wnm_action(struct wpa_supplicant *wpa_s,
			      struct rx_action *action)
{
	u8 *pos = (u8 *) action->data; /* point to action field */
	u8 act = *pos++;
	/* u8 dialog_token = *pos++; */

	switch (act) {
	case WNM_SLEEP_MODE_RESP:
		ieee802_11_rx_wnmsleep_resp(wpa_s, action->data, action->len);
		break;
	default:
		break;
	}
}
Commit	Line	Data
75cad1a0 XC	1	/*
	2	* wpa_supplicant - WNM
	3	* Copyright (c) 2011-2012, Qualcomm Atheros, Inc.
	4	*
	5	* This software may be distributed under the terms of the BSD license.
	6	* See README for more details.
	7	*/
	8
	9	#include "utils/includes.h"
	10
	11	#include "utils/common.h"
	12	#include "common/ieee802_11_defs.h"
	13	#include "rsn_supp/wpa.h"
61c54976 JM	14	#include "wpa_supplicant_i.h"
61c54976 JM	15	#include "driver_i.h"
75cad1a0 XC	16
	17	#define MAX_TFS_IE_LEN 1024
	18
75cad1a0 XC	19
	20	/* get the TFS IE from driver */
	21	static int ieee80211_11_get_tfs_ie(struct wpa_supplicant wpa_s, u8 buf,
	22	u16 *buf_len, enum wnm_oper oper)
	23	{
	24	wpa_printf(MSG_DEBUG, "%s: TFS get operation %d", __func__, oper);
	25
	26	return wpa_drv_wnm_oper(wpa_s, oper, wpa_s->bssid, buf, buf_len);
	27	}
	28
	29
	30	/* set the TFS IE to driver */
	31	static int ieee80211_11_set_tfs_ie(struct wpa_supplicant *wpa_s,
	32	const u8 addr, u8 buf, u16 *buf_len,
	33	enum wnm_oper oper)
	34	{
	35	wpa_printf(MSG_DEBUG, "%s: TFS set operation %d", __func__, oper);
	36
	37	return wpa_drv_wnm_oper(wpa_s, oper, addr, buf, buf_len);
	38	}
	39
	40
	41	/* MLME-SLEEPMODE.request */
	42	int ieee802_11_send_wnmsleep_req(struct wpa_supplicant *wpa_s,
cd0ef657	43	u8 action, u16 intval, struct wpabuf *tfs_req)
75cad1a0 XC	44	{
	45	struct ieee80211_mgmt *mgmt;
	46	int res;
	47	size_t len;
	48	struct wnm_sleep_element *wnmsleep_ie;
	49	u8 *wnmtfs_ie;
	50	u8 wnmsleep_ie_len;
	51	u16 wnmtfs_ie_len; /* possibly multiple IE(s) */
	52	enum wnm_oper tfs_oper = action == 0 ? WNM_SLEEP_TFS_REQ_IE_ADD :
	53	WNM_SLEEP_TFS_REQ_IE_NONE;
	54
cd0ef657 JM	55	wpa_printf(MSG_DEBUG, "WNM: Request to send WNM-Sleep Mode Request "
	56	"action=%s to " MACSTR,
	57	action == 0 ? "enter" : "exit",
	58	MAC2STR(wpa_s->bssid));
	59
75cad1a0 XC	60	/* WNM-Sleep Mode IE */
	61	wnmsleep_ie_len = sizeof(struct wnm_sleep_element);
	62	wnmsleep_ie = os_zalloc(sizeof(struct wnm_sleep_element));
	63	if (wnmsleep_ie == NULL)
	64	return -1;
	65	wnmsleep_ie->eid = WLAN_EID_WNMSLEEP;
	66	wnmsleep_ie->len = wnmsleep_ie_len - 2;
	67	wnmsleep_ie->action_type = action;
	68	wnmsleep_ie->status = WNM_STATUS_SLEEP_ACCEPT;
e9199e31	69	wnmsleep_ie->intval = host_to_le16(intval);
cd0ef657 JM	70	wpa_hexdump(MSG_DEBUG, "WNM: WNM-Sleep Mode element",
cd0ef657 JM	71	(u8 *) wnmsleep_ie, wnmsleep_ie_len);
75cad1a0 XC	72
75cad1a0 XC	73	/* TFS IE(s) */
cd0ef657 JM	74	if (tfs_req) {
	75	wnmtfs_ie_len = wpabuf_len(tfs_req);
	76	wnmtfs_ie = os_malloc(wnmtfs_ie_len);
	77	if (wnmtfs_ie == NULL) {
	78	os_free(wnmsleep_ie);
	79	return -1;
	80	}
	81	os_memcpy(wnmtfs_ie, wpabuf_head(tfs_req), wnmtfs_ie_len);
	82	} else {
	83	wnmtfs_ie = os_zalloc(MAX_TFS_IE_LEN);
	84	if (wnmtfs_ie == NULL) {
	85	os_free(wnmsleep_ie);
	86	return -1;
	87	}
	88	if (ieee80211_11_get_tfs_ie(wpa_s, wnmtfs_ie, &wnmtfs_ie_len,
	89	tfs_oper)) {
	90	wnmtfs_ie_len = 0;
	91	os_free(wnmtfs_ie);
	92	wnmtfs_ie = NULL;
	93	}
75cad1a0	94	}
cd0ef657 JM	95	wpa_hexdump(MSG_DEBUG, "WNM: TFS Request element",
cd0ef657 JM	96	(u8 *) wnmtfs_ie, wnmtfs_ie_len);
75cad1a0 XC	97
	98	mgmt = os_zalloc(sizeof(*mgmt) + wnmsleep_ie_len + wnmtfs_ie_len);
	99	if (mgmt == NULL) {
	100	wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
	101	"WNM-Sleep Request action frame");
14df897c JM	102	os_free(wnmsleep_ie);
14df897c JM	103	os_free(wnmtfs_ie);
75cad1a0 XC	104	return -1;
	105	}
	106
	107	os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
	108	os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
	109	os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
	110	mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
	111	WLAN_FC_STYPE_ACTION);
	112	mgmt->u.action.category = WLAN_ACTION_WNM;
	113	mgmt->u.action.u.wnm_sleep_req.action = WNM_SLEEP_MODE_REQ;
e0c54a15	114	mgmt->u.action.u.wnm_sleep_req.dialogtoken = 1;
75cad1a0 XC	115	os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable, wnmsleep_ie,
	116	wnmsleep_ie_len);
	117	/* copy TFS IE here */
	118	if (wnmtfs_ie_len > 0) {
	119	os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable +
	120	wnmsleep_ie_len, wnmtfs_ie, wnmtfs_ie_len);
	121	}
	122
	123	len = 1 + sizeof(mgmt->u.action.u.wnm_sleep_req) + wnmsleep_ie_len +
	124	wnmtfs_ie_len;
	125
	126	res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
	127	wpa_s->own_addr, wpa_s->bssid,
	128	&mgmt->u.action.category, len, 0);
	129	if (res < 0)
	130	wpa_printf(MSG_DEBUG, "Failed to send WNM-Sleep Request "
	131	"(action=%d, intval=%d)", action, intval);
	132
	133	os_free(wnmsleep_ie);
	134	os_free(wnmtfs_ie);
	135	os_free(mgmt);
	136
	137	return res;
	138	}
	139
	140
74b4a360 JM	141	static void wnm_sleep_mode_enter_success(struct wpa_supplicant *wpa_s,
	142	u8 *tfsresp_ie_start,
	143	u8 *tfsresp_ie_end)
	144	{
	145	wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_CONFIRM,
	146	wpa_s->bssid, NULL, NULL);
	147	/* remove GTK/IGTK ?? */
	148
	149	/* set the TFS Resp IE(s) */
	150	if (tfsresp_ie_start && tfsresp_ie_end &&
	151	tfsresp_ie_end - tfsresp_ie_start >= 0) {
	152	u16 tfsresp_ie_len;
	153	tfsresp_ie_len = (tfsresp_ie_end + tfsresp_ie_end[1] + 2) -
	154	tfsresp_ie_start;
	155	wpa_printf(MSG_DEBUG, "TFS Resp IE(s) found");
	156	/* pass the TFS Resp IE(s) to driver for processing */
	157	if (ieee80211_11_set_tfs_ie(wpa_s, wpa_s->bssid,
	158	tfsresp_ie_start,
	159	&tfsresp_ie_len,
	160	WNM_SLEEP_TFS_RESP_IE_SET))
	161	wpa_printf(MSG_DEBUG, "WNM: Fail to set TFS Resp IE");
	162	}
	163	}
	164
	165
	166	static void wnm_sleep_mode_exit_success(struct wpa_supplicant *wpa_s,
	167	const u8 *frm, u16 key_len_total)
	168	{
	169	u8 ptr, end;
	170	u8 gtk_len;
	171
	172	wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM, wpa_s->bssid,
	173	NULL, NULL);
	174
	175	/* Install GTK/IGTK */
	176
	177	/* point to key data field */
	178	ptr = (u8 *) frm + 1 + 1 + 2;
	179	end = ptr + key_len_total;
	180	wpa_hexdump_key(MSG_DEBUG, "WNM: Key Data", ptr, key_len_total);
	181
	182	while (ptr + 1 < end) {
	183	if (ptr + 2 + ptr[1] > end) {
	184	wpa_printf(MSG_DEBUG, "WNM: Invalid Key Data element "
	185	"length");
	186	if (end > ptr) {
	187	wpa_hexdump(MSG_DEBUG, "WNM: Remaining data",
	188	ptr, end - ptr);
	189	}
	190	break;
	191	}
	192	if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
	193	if (ptr[1] < 11 + 5) {
	194	wpa_printf(MSG_DEBUG, "WNM: Too short GTK "
	195	"subelem");
	196	break;
	197	}
	198	gtk_len = *(ptr + 4);
	199	if (ptr[1] < 11 + gtk_len \|\|
	200	gtk_len < 5 \|\| gtk_len > 32) {
	201	wpa_printf(MSG_DEBUG, "WNM: Invalid GTK "
	202	"subelem");
	203	break;
	204	}
205	wpa_wnmsleep_install_key(
206	wpa_s->wpa,
207	WNM_SLEEP_SUBELEM_GTK,
208	ptr);
209	ptr += 13 + gtk_len;
210	#ifdef CONFIG_IEEE80211W
211	} else if (*ptr == WNM_SLEEP_SUBELEM_IGTK) {
212	if (ptr[1] < 2 + 6 + WPA_IGTK_LEN) {
213	wpa_printf(MSG_DEBUG, "WNM: Too short IGTK "
214	"subelem");
215	break;
216	}
217	wpa_wnmsleep_install_key(wpa_s->wpa,
218	WNM_SLEEP_SUBELEM_IGTK, ptr);
219	ptr += 10 + WPA_IGTK_LEN;
220	#endif /* CONFIG_IEEE80211W */
221	} else
222	break; /* skip the loop */
223	}
224	}
225
226
75cad1a0 XC	227	static void ieee802_11_rx_wnmsleep_resp(struct wpa_supplicant *wpa_s,
	228	const u8 *frm, int len)
	229	{
	230	/*
	231	* Action [1] \| Diaglog Token [1] \| Key Data Len [2] \| Key Data \|
	232	* WNM-Sleep Mode IE \| TFS Response IE
	233	*/
	234	u8 pos = (u8 ) frm; /* point to action field */
	235	u16 key_len_total = le_to_host16(((u16 )(frm+2)));
75cad1a0 XC	236	struct wnm_sleep_element *wnmsleep_ie = NULL;
	237	/* multiple TFS Resp IE (assuming consecutive) */
	238	u8 *tfsresp_ie_start = NULL;
	239	u8 *tfsresp_ie_end = NULL;
75cad1a0 XC	240
	241	wpa_printf(MSG_DEBUG, "action=%d token = %d key_len_total = %d",
	242	frm[0], frm[1], key_len_total);
	243	pos += 4 + key_len_total;
68db9ab0 JM	244	if (pos > frm + len) {
	245	wpa_printf(MSG_INFO, "WNM: Too short frame for Key Data field");
	246	return;
	247	}
75cad1a0 XC	248	while (pos - frm < len) {
75cad1a0 XC	249	u8 ie_len = *(pos + 1);
68db9ab0 JM	250	if (pos + 2 + ie_len > frm + len) {
	251	wpa_printf(MSG_INFO, "WNM: Invalid IE len %u", ie_len);
	252	break;
	253	}
	254	wpa_hexdump(MSG_DEBUG, "WNM: Element", pos, 2 + ie_len);
75cad1a0 XC	255	if (*pos == WLAN_EID_WNMSLEEP)
	256	wnmsleep_ie = (struct wnm_sleep_element *) pos;
	257	else if (*pos == WLAN_EID_TFS_RESP) {
	258	if (!tfsresp_ie_start)
	259	tfsresp_ie_start = pos;
	260	tfsresp_ie_end = pos;
	261	} else
	262	wpa_printf(MSG_DEBUG, "EID %d not recognized", *pos);
	263	pos += ie_len + 2;
	264	}
	265
	266	if (!wnmsleep_ie) {
	267	wpa_printf(MSG_DEBUG, "No WNM-Sleep IE found");
	268	return;
	269	}
	270
62f6fbb4 JM	271	if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT \|\|
62f6fbb4 JM	272	wnmsleep_ie->status == WNM_STATUS_SLEEP_EXIT_ACCEPT_GTK_UPDATE) {
75cad1a0 XC	273	wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response "
	274	"frame (action=%d, intval=%d)",
	275	wnmsleep_ie->action_type, wnmsleep_ie->intval);
df80a0cc	276	if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER) {
74b4a360 JM	277	wnm_sleep_mode_enter_success(wpa_s, tfsresp_ie_start,
74b4a360 JM	278	tfsresp_ie_end);
df80a0cc	279	} else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT) {
74b4a360	280	wnm_sleep_mode_exit_success(wpa_s, frm, key_len_total);
75cad1a0 XC	281	}
	282	} else {
	283	wpa_printf(MSG_DEBUG, "Reject recv WNM-Sleep Response frame "
	284	"(action=%d, intval=%d)",
	285	wnmsleep_ie->action_type, wnmsleep_ie->intval);
df80a0cc	286	if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER)
75cad1a0 XC	287	wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_FAIL,
75cad1a0 XC	288	wpa_s->bssid, NULL, NULL);
df80a0cc	289	else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT)
75cad1a0 XC	290	wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_FAIL,
	291	wpa_s->bssid, NULL, NULL);
	292	}
	293	}
	294
	295
	296	void ieee802_11_rx_wnm_action(struct wpa_supplicant *wpa_s,
	297	struct rx_action *action)
	298	{
	299	u8 pos = (u8 ) action->data; /* point to action field */
	300	u8 act = *pos++;
	301	/* u8 dialog_token = pos++; /
	302
	303	switch (act) {
	304	case WNM_SLEEP_MODE_RESP:
	305	ieee802_11_rx_wnmsleep_resp(wpa_s, action->data, action->len);
	306	break;
	307	default:
	308	break;
	309	}
	310	}