wpa_supplicant/wnm_sta.c - platform/external/wpa_supplicant_8 - Git at Google

 /*
  * 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/wpa_supplicant_i.h"
 #include "../wpa_supplicant/driver_i.h"

 #define MAX_TFS_IE_LEN  1024

 #ifdef CONFIG_IEEE80211V

 /* 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, u8 intval)
 {
 	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;

 	/* 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 = intval;

 	/* TFS IE(s) */
 	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;
 	}

 	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");
 		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;
 	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 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)));
 	u8 gtk_len;
 #ifdef CONFIG_IEEE80211W
 	u8 igtk_len;
 #endif /* CONFIG_IEEE80211W */
 	struct wnm_sleep_element *wnmsleep_ie = NULL;
 	/* multiple TFS Resp IE (assuming consecutive) */
 	u8 *tfsresp_ie_start = NULL;
 	u8 *tfsresp_ie_end = NULL;
 	u16 tfsresp_ie_len = 0;

 	wpa_printf(MSG_DEBUG, "action=%d token = %d key_len_total = %d",
 		   frm[0], frm[1], key_len_total);
 	pos += 4 + key_len_total;
 	while (pos - frm < len) {
 		u8 ie_len = *(pos + 1);
 		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) {
 		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 == 0) {
 			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) {
 				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, "Fail to set "
 						   "TFS Resp IE");
 			}
 		} else if (wnmsleep_ie->action_type == 1) {
 			wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM,
 					 wpa_s->bssid, NULL, NULL);
 			/* Install GTK/IGTK */
 			do {
 				/* point to key data field */
 				u8 *ptr = (u8 *) frm + 1 + 1 + 2;
 				while (ptr < (u8 *) frm + 4 + key_len_total) {
 					if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
 						gtk_len = *(ptr + 4);
 						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) {
 						igtk_len = WPA_IGTK_LEN;
 						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 */
 				}
 			} while(0);
 		}
 	} 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 == 0)
 			wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_FAIL,
 					 wpa_s->bssid, NULL, NULL);
 		else if (wnmsleep_ie->action_type == 1)
 			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;
 	}
 }

 #endif /* CONFIG_IEEE80211V */
	/*
	* 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/wpa_supplicant_i.h"
	#include "../wpa_supplicant/driver_i.h"

	#define MAX_TFS_IE_LEN 1024

	#ifdef CONFIG_IEEE80211V

	/* 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, u8 intval)
	{
	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;

	/* 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 = intval;

	/* TFS IE(s) */
	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;
	}

	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");
	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;
	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 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)));
	u8 gtk_len;
	#ifdef CONFIG_IEEE80211W
	u8 igtk_len;
	#endif /* CONFIG_IEEE80211W */
	struct wnm_sleep_element *wnmsleep_ie = NULL;
	/* multiple TFS Resp IE (assuming consecutive) */
	u8 *tfsresp_ie_start = NULL;
	u8 *tfsresp_ie_end = NULL;
	u16 tfsresp_ie_len = 0;

	wpa_printf(MSG_DEBUG, "action=%d token = %d key_len_total = %d",
	frm[0], frm[1], key_len_total);
	pos += 4 + key_len_total;
	while (pos - frm < len) {
	u8 ie_len = *(pos + 1);
	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) {
	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 == 0) {
	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) {
	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, "Fail to set "
	"TFS Resp IE");
	}
	} else if (wnmsleep_ie->action_type == 1) {
	wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM,
	wpa_s->bssid, NULL, NULL);
	/* Install GTK/IGTK */
	do {
	/* point to key data field */
	u8 ptr = (u8 ) frm + 1 + 1 + 2;
	while (ptr < (u8 *) frm + 4 + key_len_total) {
	if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
	gtk_len = *(ptr + 4);
	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) {
	igtk_len = WPA_IGTK_LEN;
	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 */
	}
	} while(0);
	}
	} 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 == 0)
	wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_FAIL,
	wpa_s->bssid, NULL, NULL);
	else if (wnmsleep_ie->action_type == 1)
	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;
	}
	}

	#endif /* CONFIG_IEEE80211V */