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Move SA Query mechanism into a file that can be shared more easily

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This is the first step in allowing SA Query mechanism in hostapd to be
used with drivers that implement authentication and association MLME/SME
(i.e., do not use ieee802_11.c).
This commit is contained in:
Mahesh Palivela 2011-10-17 17:30:43 +03:00 committed by Jouni Malinen
parent 2a4b98a912
commit d4370eac2e
5 changed files with 179 additions and 142 deletions
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1
hostapd/Makefile
View file

@ -51,6 +51,7 @@ OBJS += ../src/ap/ap_mlme.o
OBJS += ../src/ap/wpa_auth_ie.o
OBJS += ../src/ap/preauth_auth.o
OBJS += ../src/ap/pmksa_cache_auth.o
OBJS += ../src/ap/ieee802_11_shared.o
OBJS_c = hostapd_cli.o ../src/common/wpa_ctrl.o ../src/utils/os_$(CONFIG_OS).o

145
src/ap/ieee802_11.c
View file

@ -199,34 +199,6 @@ u8 * hostapd_eid_ext_capab(struct hostapd_data *hapd, u8 *eid)
}
#ifdef CONFIG_IEEE80211W
static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
struct sta_info *sta, u8 *eid)
{
u8 *pos = eid;
u32 timeout, tu;
struct os_time now, passed;
*pos++ = WLAN_EID_TIMEOUT_INTERVAL;
*pos++ = 5;
*pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK;
os_get_time(&now);
os_time_sub(&now, &sta->sa_query_start, &passed);
tu = (passed.sec * 1000000 + passed.usec) / 1024;
if (hapd->conf->assoc_sa_query_max_timeout > tu)
timeout = hapd->conf->assoc_sa_query_max_timeout - tu;
else
timeout = 0;
if (timeout < hapd->conf->assoc_sa_query_max_timeout)
timeout++; /* add some extra time for local timers */
WPA_PUT_LE32(pos, timeout);
pos += 4;
return pos;
}
#endif /* CONFIG_IEEE80211W */
void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
{
int i;
@ -1263,81 +1235,11 @@ static void handle_beacon(struct hostapd_data *hapd,
#ifdef CONFIG_IEEE80211W
/* MLME-SAQuery.request */
void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
const u8 *addr, const u8 *trans_id)
{
struct ieee80211_mgmt mgmt;
u8 *end;
wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Request to "
MACSTR, MAC2STR(addr));
wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
trans_id, WLAN_SA_QUERY_TR_ID_LEN);
os_memset(&mgmt, 0, sizeof(mgmt));
mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_ACTION);
os_memcpy(mgmt.da, 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_SA_QUERY;
mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST;
os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
WLAN_SA_QUERY_TR_ID_LEN);
end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
if (hostapd_drv_send_mlme(hapd, &mgmt, end - (u8 *) &mgmt) < 0)
perror("ieee802_11_send_sa_query_req: send");
}
static void hostapd_sa_query_request(struct hostapd_data *hapd,
const struct ieee80211_mgmt *mgmt)
{
struct sta_info *sta;
struct ieee80211_mgmt resp;
u8 *end;
wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Request from "
MACSTR, MAC2STR(mgmt->sa));
wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
mgmt->u.action.u.sa_query_resp.trans_id,
WLAN_SA_QUERY_TR_ID_LEN);
sta = ap_get_sta(hapd, mgmt->sa);
if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignore SA Query Request "
"from unassociated STA " MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Response to "
MACSTR, MAC2STR(mgmt->sa));
os_memset(&resp, 0, sizeof(resp));
resp.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_ACTION);
os_memcpy(resp.da, mgmt->sa, ETH_ALEN);
os_memcpy(resp.sa, hapd->own_addr, ETH_ALEN);
os_memcpy(resp.bssid, hapd->own_addr, ETH_ALEN);
resp.u.action.category = WLAN_ACTION_SA_QUERY;
resp.u.action.u.sa_query_req.action = WLAN_SA_QUERY_RESPONSE;
os_memcpy(resp.u.action.u.sa_query_req.trans_id,
mgmt->u.action.u.sa_query_req.trans_id,
WLAN_SA_QUERY_TR_ID_LEN);
end = resp.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
if (hostapd_drv_send_mlme(hapd, &resp, end - (u8 *) &resp) < 0)
perror("hostapd_sa_query_request: send");
}
static void hostapd_sa_query_action(struct hostapd_data *hapd,
const struct ieee80211_mgmt *mgmt,
size_t len)
{
struct sta_info *sta;
const u8 *end;
int i;
end = mgmt->u.action.u.sa_query_resp.trans_id +
WLAN_SA_QUERY_TR_ID_LEN;
@ -1347,50 +1249,9 @@ static void hostapd_sa_query_action(struct hostapd_data *hapd,
return;
}
if (mgmt->u.action.u.sa_query_resp.action == WLAN_SA_QUERY_REQUEST) {
hostapd_sa_query_request(hapd, mgmt);
return;
}
if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) {
wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query "
"Action %d", mgmt->u.action.u.sa_query_resp.action);
return;
}
wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Response from "
MACSTR, MAC2STR(mgmt->sa));
wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
mgmt->u.action.u.sa_query_resp.trans_id,
WLAN_SA_QUERY_TR_ID_LEN);
/* MLME-SAQuery.confirm */
sta = ap_get_sta(hapd, mgmt->sa);
if (sta == NULL || sta->sa_query_trans_id == NULL) {
wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
"pending SA Query request found");
return;
}
for (i = 0; i < sta->sa_query_count; i++) {
if (os_memcmp(sta->sa_query_trans_id +
i * WLAN_SA_QUERY_TR_ID_LEN,
mgmt->u.action.u.sa_query_resp.trans_id,
WLAN_SA_QUERY_TR_ID_LEN) == 0)
break;
}
if (i >= sta->sa_query_count) {
wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query "
"transaction identifier found");
return;
}
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_DEBUG,
"Reply to pending SA Query received");
ap_sta_stop_sa_query(hapd, sta);
ieee802_11_sa_query_action(hapd, mgmt->sa,
mgmt->u.action.u.sa_query_resp.action,
mgmt->u.action.u.sa_query_resp.trans_id);
}

5
src/ap/ieee802_11.h
View file

@ -64,5 +64,10 @@ void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
const u8 *buf, size_t len, int ack);
void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
int wds);
u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
struct sta_info *sta, u8 *eid);
void ieee802_11_sa_query_action(struct hostapd_data *hapd,
const u8 *sa, const u8 action_type,
const u8 *trans_id);
#endif /* IEEE802_11_H */

169
src/ap/ieee802_11_shared.c Normal file
View file

@ -0,0 +1,169 @@
/*
* hostapd / IEEE 802.11 Management
* Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "common/ieee802_11_defs.h"
#include "hostapd.h"
#include "sta_info.h"
#include "ap_config.h"
#include "ap_drv_ops.h"
#ifdef CONFIG_IEEE80211W
u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
struct sta_info *sta, u8 *eid)
{
u8 *pos = eid;
u32 timeout, tu;
struct os_time now, passed;
*pos++ = WLAN_EID_TIMEOUT_INTERVAL;
*pos++ = 5;
*pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK;
os_get_time(&now);
os_time_sub(&now, &sta->sa_query_start, &passed);
tu = (passed.sec * 1000000 + passed.usec) / 1024;
if (hapd->conf->assoc_sa_query_max_timeout > tu)
timeout = hapd->conf->assoc_sa_query_max_timeout - tu;
else
timeout = 0;
if (timeout < hapd->conf->assoc_sa_query_max_timeout)
timeout++; /* add some extra time for local timers */
WPA_PUT_LE32(pos, timeout);
pos += 4;
return pos;
}
/* MLME-SAQuery.request */
void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
const u8 *addr, const u8 *trans_id)
{
struct ieee80211_mgmt mgmt;
u8 *end;
wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Request to "
MACSTR, MAC2STR(addr));
wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
trans_id, WLAN_SA_QUERY_TR_ID_LEN);
os_memset(&mgmt, 0, sizeof(mgmt));
mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_ACTION);
os_memcpy(mgmt.da, 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_SA_QUERY;
mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST;
os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
WLAN_SA_QUERY_TR_ID_LEN);
end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
if (hostapd_drv_send_mlme(hapd, &mgmt, end - (u8 *) &mgmt) < 0)
perror("ieee802_11_send_sa_query_req: send");
}
void ieee802_11_send_sa_query_resp(struct hostapd_data *hapd,
const u8 *sa, const u8 *trans_id)
{
struct sta_info *sta;
struct ieee80211_mgmt resp;
u8 *end;
wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Request from "
MACSTR, MAC2STR(sa));
wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
trans_id, WLAN_SA_QUERY_TR_ID_LEN);
sta = ap_get_sta(hapd, sa);
if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignore SA Query Request "
"from unassociated STA " MACSTR, MAC2STR(sa));
return;
}
wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Response to "
MACSTR, MAC2STR(sa));
os_memset(&resp, 0, sizeof(resp));
resp.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_ACTION);
os_memcpy(resp.da, sa, ETH_ALEN);
os_memcpy(resp.sa, hapd->own_addr, ETH_ALEN);
os_memcpy(resp.bssid, hapd->own_addr, ETH_ALEN);
resp.u.action.category = WLAN_ACTION_SA_QUERY;
resp.u.action.u.sa_query_req.action = WLAN_SA_QUERY_RESPONSE;
os_memcpy(resp.u.action.u.sa_query_req.trans_id, trans_id,
WLAN_SA_QUERY_TR_ID_LEN);
end = resp.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
if (hostapd_drv_send_mlme(hapd, &resp, end - (u8 *) &resp) < 0)
perror("ieee80211_mgmt_sa_query_request: send");
}
void ieee802_11_sa_query_action(struct hostapd_data *hapd, const u8 *sa,
const u8 action_type, const u8 *trans_id)
{
struct sta_info *sta;
int i;
if (action_type == WLAN_SA_QUERY_REQUEST) {
ieee802_11_send_sa_query_resp(hapd, sa, trans_id);
return;
}
if (action_type != WLAN_SA_QUERY_RESPONSE) {
wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query "
"Action %d", action_type);
return;
}
wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Response from "
MACSTR, MAC2STR(sa));
wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
trans_id, WLAN_SA_QUERY_TR_ID_LEN);
/* MLME-SAQuery.confirm */
sta = ap_get_sta(hapd, sa);
if (sta == NULL || sta->sa_query_trans_id == NULL) {
wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
"pending SA Query request found");
return;
}
for (i = 0; i < sta->sa_query_count; i++) {
if (os_memcmp(sta->sa_query_trans_id +
i * WLAN_SA_QUERY_TR_ID_LEN,
trans_id, WLAN_SA_QUERY_TR_ID_LEN) == 0)
break;
}
if (i >= sta->sa_query_count) {
wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query "
"transaction identifier found");
return;
}
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_DEBUG,
"Reply to pending SA Query received");
ap_sta_stop_sa_query(hapd, sta);
}
#endif /* CONFIG_IEEE80211W */

1
wpa_supplicant/Makefile
View file

@ -678,6 +678,7 @@ OBJS += ../src/ap/ap_mlme.o
OBJS += ../src/ap/ieee802_1x.o
OBJS += ../src/eapol_auth/eapol_auth_sm.o
OBJS += ../src/ap/ieee802_11_auth.o
OBJS += ../src/ap/ieee802_11_shared.o
OBJS += ../src/ap/drv_callbacks.o
OBJS += ../src/ap/ap_drv_ops.o
ifdef CONFIG_IEEE80211N