* wpa_supplicant - TDLS
* Copyright (c) 2010-2011, Atheros Communications
*
- * 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.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "utils/includes.h"
#define TDLS_MAX_IE_LEN 80
+#define IEEE80211_MAX_SUPP_RATES 32
+
struct wpa_tdls_peer {
struct wpa_tdls_peer *next;
int initiator; /* whether this end was initiator for TDLS setup */
int buf_len; /* length of TPK message for retransmission */
u8 *buf; /* buffer for TPK message */
} sm_tmr;
+
+ u16 capability;
+
+ u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
+ size_t supp_rates_len;
+
+ struct ieee80211_ht_capabilities *ht_capabilities;
+
+ u8 qos_info;
+
+ u8 *ext_capab;
+ size_t ext_capab_len;
};
}
if (action_code == WLAN_TDLS_SETUP_CONFIRM ||
- action_code == WLAN_TDLS_TEARDOWN)
+ action_code == WLAN_TDLS_TEARDOWN ||
+ action_code == WLAN_TDLS_DISCOVERY_REQUEST ||
+ action_code == WLAN_TDLS_DISCOVERY_RESPONSE)
return 0; /* No retries */
for (peer = sm->tdls; peer; peer = peer->next) {
}
+static int wpa_tdls_do_teardown(struct wpa_sm *sm, struct wpa_tdls_peer *peer,
+ u16 reason_code, int free_peer)
+{
+ int ret;
+
+ if (sm->tdls_external_setup) {
+ ret = wpa_tdls_send_teardown(sm, peer->addr, reason_code);
+
+ /* disable the link after teardown was sent */
+ wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, peer->addr);
+ } else {
+ ret = wpa_sm_tdls_oper(sm, TDLS_TEARDOWN, peer->addr);
+ }
+
+ if (sm->tdls_external_setup || free_peer)
+ wpa_tdls_peer_free(sm, peer);
+
+ return ret;
+}
+
+
static void wpa_tdls_tpk_retry_timeout(void *eloop_ctx, void *timeout_ctx)
{
eloop_register_timeout(peer->sm_tmr.timer / 1000, 0,
wpa_tdls_tpk_retry_timeout, sm, peer);
} else {
- wpa_printf(MSG_INFO, "Sending Tear_Down Request");
- wpa_sm_tdls_oper(sm, TDLS_TEARDOWN, peer->addr);
-
- wpa_printf(MSG_INFO, "Clearing SM: Peerkey(" MACSTR ")",
- MAC2STR(peer->addr));
eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer);
- /* clear the Peerkey statemachine */
- wpa_tdls_peer_free(sm, peer);
+ wpa_printf(MSG_DEBUG, "TDLS: Sending Teardown Request");
+ wpa_tdls_do_teardown(sm, peer,
+ WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, 1);
}
}
} else {
wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime expired for " MACSTR
" - tear down", MAC2STR(peer->addr));
- wpa_sm_tdls_oper(sm, TDLS_TEARDOWN, peer->addr);
+ wpa_tdls_do_teardown(sm, peer,
+ WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, 1);
}
}
peer->initiator = 0;
os_free(peer->sm_tmr.buf);
peer->sm_tmr.buf = NULL;
+ os_free(peer->ht_capabilities);
+ peer->ht_capabilities = NULL;
+ os_free(peer->ext_capab);
+ peer->ext_capab = NULL;
peer->rsnie_i_len = peer->rsnie_p_len = 0;
peer->cipher = 0;
peer->tpk_set = peer->tpk_success = 0;
}
-int wpa_tdls_recv_teardown_notify(struct wpa_sm *sm, const u8 *addr,
- u16 reason_code)
+int wpa_tdls_send_teardown(struct wpa_sm *sm, const u8 *addr, u16 reason_code)
{
struct wpa_tdls_peer *peer;
struct wpa_tdls_ftie *ftie;
u8 *rbuf, *pos;
int ielen;
- if (sm->tdls_disabled)
+ if (sm->tdls_disabled || !sm->tdls_supported)
return -1;
/* Find the node and free from the list */
return -1;
pos = rbuf;
- if (!wpa_tdls_get_privacy(sm) || !peer->tpk_set || !peer->tpk_success)
+ if (!wpa_tdls_get_privacy(sm) || !peer->tpk_set || !peer->tpk_success) {
+ if (reason_code != WLAN_REASON_DEAUTH_LEAVING) {
+ /* Overwrite the reason code */
+ reason_code = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED;
+ }
goto skip_ies;
+ }
ftie = (struct wpa_tdls_ftie *) pos;
ftie->ie_type = WLAN_EID_FAST_BSS_TRANSITION;
ftie->ie_len += 170;
*pos++ = 255; /* FTIE subelem */
*pos++ = 168; /* FTIE subelem length */
+ pos += 168;
}
#endif /* CONFIG_TDLS_TESTING */
wpa_hexdump(MSG_DEBUG, "TDLS: FTIE for TDLS Teardown handshake",
- (u8 *) ftie, sizeof(*ftie));
+ (u8 *) ftie, pos - (u8 *) ftie);
/* compute MIC before sending */
wpa_tdls_linkid(sm, peer, &lnkid);
/* request driver to send Teardown using this FTIE */
wpa_tdls_tpk_send(sm, addr, WLAN_TDLS_TEARDOWN, 0,
- WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, rbuf,
- pos - rbuf);
+ reason_code, rbuf, pos - rbuf);
os_free(rbuf);
/* clear the Peerkey statemachine */
}
+int wpa_tdls_teardown_link(struct wpa_sm *sm, const u8 *addr, u16 reason_code)
+{
+ struct wpa_tdls_peer *peer;
+
+ if (sm->tdls_disabled || !sm->tdls_supported)
+ return -1;
+
+ for (peer = sm->tdls; peer; peer = peer->next) {
+ if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0)
+ break;
+ }
+
+ if (peer == NULL) {
+ wpa_printf(MSG_DEBUG, "TDLS: Could not find peer " MACSTR
+ " for link Teardown", MAC2STR(addr));
+ return -1;
+ }
+
+ if (!peer->tpk_success) {
+ wpa_printf(MSG_DEBUG, "TDLS: Peer " MACSTR
+ " not connected - cannot Teardown link", MAC2STR(addr));
+ return -1;
+ }
+
+ return wpa_tdls_do_teardown(sm, peer, reason_code, 0);
+}
+
+
+void wpa_tdls_disable_link(struct wpa_sm *sm, const u8 *addr)
+{
+ struct wpa_tdls_peer *peer;
+
+ for (peer = sm->tdls; peer; peer = peer->next) {
+ if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0)
+ break;
+ }
+
+ if (peer) {
+ wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, addr);
+ wpa_tdls_peer_free(sm, peer);
+ }
+}
+
+
static int wpa_tdls_recv_teardown(struct wpa_sm *sm, const u8 *src_addr,
const u8 *buf, size_t len)
{
}
+static struct wpa_tdls_peer *
+wpa_tdls_add_peer(struct wpa_sm *sm, const u8 *addr, int *existing)
+{
+ struct wpa_tdls_peer *peer;
+
+ if (existing)
+ *existing = 0;
+ for (peer = sm->tdls; peer; peer = peer->next) {
+ if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) {
+ if (existing)
+ *existing = 1;
+ return peer; /* re-use existing entry */
+ }
+ }
+
+ wpa_printf(MSG_INFO, "TDLS: Creating peer entry for " MACSTR,
+ MAC2STR(addr));
+
+ peer = os_zalloc(sizeof(*peer));
+ if (peer == NULL)
+ return NULL;
+
+ os_memcpy(peer->addr, addr, ETH_ALEN);
+ peer->next = sm->tdls;
+ sm->tdls = peer;
+
+ return peer;
+}
+
+
static int wpa_tdls_send_tpk_m1(struct wpa_sm *sm,
struct wpa_tdls_peer *peer)
{
"Handshake Message 1 (peer " MACSTR ")",
MAC2STR(peer->addr));
- wpa_tdls_tpk_send(sm, peer->addr, WLAN_TDLS_SETUP_REQUEST, 0, 0,
+ wpa_tdls_tpk_send(sm, peer->addr, WLAN_TDLS_SETUP_REQUEST, 1, 0,
rbuf, pos - rbuf);
os_free(rbuf);
}
+static int wpa_tdls_send_discovery_response(struct wpa_sm *sm,
+ struct wpa_tdls_peer *peer,
+ u8 dialog_token)
+{
+ wpa_printf(MSG_DEBUG, "TDLS: Sending TDLS Discovery Response "
+ "(peer " MACSTR ")", MAC2STR(peer->addr));
+
+ return wpa_tdls_tpk_send(sm, peer->addr, WLAN_TDLS_DISCOVERY_RESPONSE,
+ dialog_token, 0, NULL, 0);
+}
+
+
+static int
+wpa_tdls_process_discovery_request(struct wpa_sm *sm, const u8 *addr,
+ const u8 *buf, size_t len)
+{
+ struct wpa_eapol_ie_parse kde;
+ const struct wpa_tdls_lnkid *lnkid;
+ struct wpa_tdls_peer *peer;
+ size_t min_req_len = sizeof(struct wpa_tdls_frame) +
+ 1 /* dialog token */ + sizeof(struct wpa_tdls_lnkid);
+ u8 dialog_token;
+
+ wpa_printf(MSG_DEBUG, "TDLS: Discovery Request from " MACSTR,
+ MAC2STR(addr));
+
+ if (len < min_req_len) {
+ wpa_printf(MSG_DEBUG, "TDLS Discovery Request is too short: "
+ "%d", (int) len);
+ return -1;
+ }
+
+ dialog_token = buf[sizeof(struct wpa_tdls_frame)];
+
+ if (wpa_supplicant_parse_ies(buf + sizeof(struct wpa_tdls_frame) + 1,
+ len - (sizeof(struct wpa_tdls_frame) + 1),
+ &kde) < 0)
+ return -1;
+
+ if (!kde.lnkid) {
+ wpa_printf(MSG_DEBUG, "TDLS: Link ID not found in Discovery "
+ "Request");
+ return -1;
+ }
+
+ lnkid = (const struct wpa_tdls_lnkid *) kde.lnkid;
+
+ if (os_memcmp(sm->bssid, lnkid->bssid, ETH_ALEN) != 0) {
+ wpa_printf(MSG_DEBUG, "TDLS: Discovery Request from different "
+ " BSS " MACSTR, MAC2STR(lnkid->bssid));
+ return -1;
+ }
+
+ peer = wpa_tdls_add_peer(sm, addr, NULL);
+ if (peer == NULL)
+ return -1;
+
+ return wpa_tdls_send_discovery_response(sm, peer, dialog_token);
+}
+
+
+int wpa_tdls_send_discovery_request(struct wpa_sm *sm, const u8 *addr)
+{
+ if (sm->tdls_disabled || !sm->tdls_supported)
+ return -1;
+
+ wpa_printf(MSG_DEBUG, "TDLS: Sending Discovery Request to peer "
+ MACSTR, MAC2STR(addr));
+ return wpa_tdls_tpk_send(sm, addr, WLAN_TDLS_DISCOVERY_REQUEST,
+ 1, 0, NULL, 0);
+}
+
+
+static int copy_supp_rates(const struct wpa_eapol_ie_parse *kde,
+ struct wpa_tdls_peer *peer)
+{
+ if (!kde->supp_rates) {
+ wpa_printf(MSG_DEBUG, "TDLS: No supported rates received");
+ return -1;
+ }
+ peer->supp_rates_len = merge_byte_arrays(
+ peer->supp_rates, sizeof(peer->supp_rates),
+ kde->supp_rates + 2, kde->supp_rates_len - 2,
+ kde->ext_supp_rates + 2, kde->ext_supp_rates_len - 2);
+ return 0;
+}
+
+
+static int copy_peer_ht_capab(const struct wpa_eapol_ie_parse *kde,
+ struct wpa_tdls_peer *peer)
+{
+ if (!kde->ht_capabilities ||
+ kde->ht_capabilities_len <
+ sizeof(struct ieee80211_ht_capabilities) ) {
+ wpa_printf(MSG_DEBUG, "TDLS: No supported ht capabilities "
+ "received");
+ return 0;
+ }
+
+ if (!peer->ht_capabilities) {
+ peer->ht_capabilities =
+ os_zalloc(sizeof(struct ieee80211_ht_capabilities));
+ if (peer->ht_capabilities == NULL)
+ return -1;
+ }
+
+ os_memcpy(peer->ht_capabilities, kde->ht_capabilities,
+ sizeof(struct ieee80211_ht_capabilities));
+ wpa_hexdump(MSG_DEBUG, "TDLS: Peer HT capabilities",
+ (u8 *) peer->ht_capabilities,
+ sizeof(struct ieee80211_ht_capabilities));
+
+ return 0;
+}
+
+
+static int copy_peer_ext_capab(const struct wpa_eapol_ie_parse *kde,
+ struct wpa_tdls_peer *peer)
+{
+ if (!kde->ext_capab) {
+ wpa_printf(MSG_DEBUG, "TDLS: No extended capabilities "
+ "received");
+ return 0;
+ }
+
+ if (!peer->ext_capab || peer->ext_capab_len < kde->ext_capab_len - 2) {
+ /* Need to allocate buffer to fit the new information */
+ os_free(peer->ext_capab);
+ peer->ext_capab = os_zalloc(kde->ext_capab_len - 2);
+ if (peer->ext_capab == NULL)
+ return -1;
+ }
+
+ peer->ext_capab_len = kde->ext_capab_len - 2;
+ os_memcpy(peer->ext_capab, kde->ext_capab + 2, peer->ext_capab_len);
+
+ return 0;
+}
+
+
static int wpa_tdls_process_tpk_m1(struct wpa_sm *sm, const u8 *src_addr,
const u8 *buf, size_t len)
{
u16 ielen;
u16 status = WLAN_STATUS_UNSPECIFIED_FAILURE;
int tdls_prohibited = sm->tdls_prohibited;
+ int existing_peer = 0;
if (len < 3 + 3)
return -1;
wpa_printf(MSG_INFO, "TDLS: Dialog Token in TPK M1 %d", dtoken);
- cpos += 2; /* capability information */
+ peer = wpa_tdls_add_peer(sm, src_addr, &existing_peer);
+ if (peer == NULL)
+ goto error;
+
+ /* capability information */
+ peer->capability = WPA_GET_LE16(cpos);
+ cpos += 2;
ielen = len - (cpos - buf); /* start of IE in buf */
if (wpa_supplicant_parse_ies(cpos, ielen, &kde) < 0) {
wpa_printf(MSG_DEBUG, "TDLS: TPK M1 - TPK initiator " MACSTR,
MAC2STR(src_addr));
+ if (copy_supp_rates(&kde, peer) < 0)
+ goto error;
+
+ if (copy_peer_ht_capab(&kde, peer) < 0)
+ goto error;
+
+ if (copy_peer_ext_capab(&kde, peer) < 0)
+ goto error;
+
+ peer->qos_info = kde.qosinfo;
+
#ifdef CONFIG_TDLS_TESTING
if (tdls_testing & TDLS_TESTING_CONCURRENT_INIT) {
- for (peer = sm->tdls; peer; peer = peer->next) {
- if (os_memcmp(peer->addr, src_addr, ETH_ALEN) == 0)
- break;
- }
- if (peer == NULL) {
- peer = os_zalloc(sizeof(*peer));
- if (peer == NULL)
- goto error;
- os_memcpy(peer->addr, src_addr, ETH_ALEN);
- peer->next = sm->tdls;
- sm->tdls = peer;
- }
+ peer = wpa_tdls_add_peer(sm, src_addr, NULL);
+ if (peer == NULL)
+ goto error;
wpa_printf(MSG_DEBUG, "TDLS: Testing concurrent initiation of "
"TDLS setup - send own request");
peer->initiator = 1;
}
skip_rsn:
- /* Find existing entry and if found, use that instead of adding
- * a new one; how to handle the case where both ends initiate at the
+ /* If found, use existing entry instead of adding a new one;
+ * how to handle the case where both ends initiate at the
* same time? */
- for (peer = sm->tdls; peer; peer = peer->next) {
- if (os_memcmp(peer->addr, src_addr, ETH_ALEN) == 0)
- break;
- }
-
- if (peer == NULL) {
- wpa_printf(MSG_INFO, "TDLS: No matching entry found for "
- "peer, creating one for " MACSTR,
- MAC2STR(src_addr));
- peer = os_malloc(sizeof(*peer));
- if (peer == NULL)
- goto error;
- os_memset(peer, 0, sizeof(*peer));
- os_memcpy(peer->addr, src_addr, ETH_ALEN);
- peer->next = sm->tdls;
- sm->tdls = peer;
- } else {
+ if (existing_peer) {
if (peer->tpk_success) {
wpa_printf(MSG_DEBUG, "TDLS: TDLS Setup Request while "
"direct link is enabled - tear down the "
* some drivers handling the new request frame. */
wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr);
#else
- wpa_tdls_del_key(sm, peer);
+ if (sm->tdls_external_setup)
+ wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK,
+ src_addr);
+ else
+ wpa_tdls_del_key(sm, peer);
#endif
wpa_tdls_peer_free(sm, peer);
}
}
}
+#ifdef CONFIG_TDLS_TESTING
+ if (tdls_testing & TDLS_TESTING_CONCURRENT_INIT) {
+ if (os_memcmp(sm->own_addr, peer->addr, ETH_ALEN) < 0) {
+ /*
+ * The request frame from us is going to win, so do not
+ * replace information based on this request frame from
+ * the peer.
+ */
+ goto skip_rsn_check;
+ }
+ }
+#endif /* CONFIG_TDLS_TESTING */
+
peer->initiator = 0; /* Need to check */
peer->dtoken = dtoken;
wpa_tdls_generate_tpk(peer, sm->own_addr, sm->bssid);
skip_rsn_check:
+ /* add the peer to the driver as a "setup in progress" peer */
+ wpa_sm_tdls_peer_addset(sm, peer->addr, 1, 0, NULL, 0, NULL, 0,
+ NULL, 0);
+
wpa_printf(MSG_DEBUG, "TDLS: Sending TDLS Setup Response / TPK M2");
- wpa_tdls_send_tpk_m2(sm, src_addr, dtoken, lnkid, peer);
+ if (wpa_tdls_send_tpk_m2(sm, src_addr, dtoken, lnkid, peer) < 0) {
+ wpa_tdls_disable_link(sm, peer->addr);
+ goto error;
+ }
return 0;
}
#endif /* CONFIG_TDLS_TESTING */
}
+
+ /* add supported rates, capabilities, and qos_info to the TDLS peer */
+ wpa_sm_tdls_peer_addset(sm, peer->addr, 0, peer->capability,
+ peer->supp_rates, peer->supp_rates_len,
+ peer->ht_capabilities, peer->qos_info,
+ peer->ext_capab, peer->ext_capab_len);
+
wpa_sm_tdls_oper(sm, TDLS_ENABLE_LINK, peer->addr);
}
if (status != WLAN_STATUS_SUCCESS) {
wpa_printf(MSG_INFO, "TDLS: Status code in TPK M2: %u",
status);
+ if (sm->tdls_external_setup)
+ wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr);
return -1;
}
if (len < 3 + 2 + 1 + 2)
return -1;
- pos += 2; /* capability information */
+
+ /* capability information */
+ peer->capability = WPA_GET_LE16(pos);
+ pos += 2;
ielen = len - (pos - buf); /* start of IE in buf */
if (wpa_supplicant_parse_ies(pos, ielen, &kde) < 0) {
goto error;
}
+ if (copy_supp_rates(&kde, peer) < 0)
+ goto error;
+
+ if (copy_peer_ht_capab(&kde, peer) < 0)
+ goto error;
+
+ if (copy_peer_ext_capab(&kde, peer) < 0)
+ goto error;
+
+ peer->qos_info = kde.qosinfo;
+
if (!wpa_tdls_get_privacy(sm)) {
peer->rsnie_p_len = 0;
peer->cipher = WPA_CIPHER_NONE;
/* Discard the frame */
wpa_tdls_del_key(sm, peer);
wpa_tdls_peer_free(sm, peer);
+ if (sm->tdls_external_setup)
+ wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr);
return -1;
}
error:
wpa_tdls_send_error(sm, src_addr, WLAN_TDLS_SETUP_CONFIRM, dtoken,
status);
+ if (sm->tdls_external_setup)
+ wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr);
return -1;
}
if (status != 0) {
wpa_printf(MSG_INFO, "TDLS: Status code in TPK M3: %u",
status);
+ if (sm->tdls_external_setup)
+ wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr);
return -1;
}
pos += 2 /* status code */ + 1 /* dialog token */;
if (lifetime != peer->lifetime) {
wpa_printf(MSG_INFO, "TDLS: Unexpected TPK lifetime %u in "
"TPK M3 (expected %u)", lifetime, peer->lifetime);
+ if (sm->tdls_external_setup)
+ wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr);
return -1;
}
struct wpa_tdls_peer *peer;
int tdls_prohibited = sm->tdls_prohibited;
- if (sm->tdls_disabled)
+ if (sm->tdls_disabled || !sm->tdls_supported)
return -1;
#ifdef CONFIG_TDLS_TESTING
return -1;
}
- /* Find existing entry and if found, use that instead of adding
- * a new one */
- for (peer = sm->tdls; peer; peer = peer->next) {
- if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0)
- break;
- }
-
- if (peer == NULL) {
- wpa_printf(MSG_INFO, "TDLS: No matching entry found for "
- "peer, creating one for " MACSTR, MAC2STR(addr));
- peer = os_malloc(sizeof(*peer));
- if (peer == NULL)
- return -1;
- os_memset(peer, 0, sizeof(*peer));
- os_memcpy(peer->addr, addr, ETH_ALEN);
- peer->next = sm->tdls;
- sm->tdls = peer;
- }
+ peer = wpa_tdls_add_peer(sm, addr, NULL);
+ if (peer == NULL)
+ return -1;
peer->initiator = 1;
- return wpa_tdls_send_tpk_m1(sm, peer);
+ /* add the peer to the driver as a "setup in progress" peer */
+ wpa_sm_tdls_peer_addset(sm, peer->addr, 1, 0, NULL, 0, NULL, 0,
+ NULL, 0);
+
+ if (wpa_tdls_send_tpk_m1(sm, peer) < 0) {
+ wpa_tdls_disable_link(sm, peer->addr);
+ return -1;
+ }
+
+ return 0;
}
-int wpa_tdls_reneg(struct wpa_sm *sm, const u8 *addr)
+void wpa_tdls_remove(struct wpa_sm *sm, const u8 *addr)
{
struct wpa_tdls_peer *peer;
- if (sm->tdls_disabled)
- return -1;
+ if (sm->tdls_disabled || !sm->tdls_supported)
+ return;
for (peer = sm->tdls; peer; peer = peer->next) {
if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0)
}
if (peer == NULL || !peer->tpk_success)
- return -1;
+ return;
- return wpa_tdls_start(sm, addr);
+ if (sm->tdls_external_setup) {
+ /*
+ * Disable previous link to allow renegotiation to be completed
+ * on AP path.
+ */
+ wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, peer->addr);
+ }
}
wpa_hexdump(MSG_DEBUG, "TDLS: Received Data frame encapsulation",
buf, len);
- if (sm->tdls_disabled) {
- wpa_printf(MSG_DEBUG, "TDLS: Discard message - TDLS disabled");
+ if (sm->tdls_disabled || !sm->tdls_supported) {
+ wpa_printf(MSG_DEBUG, "TDLS: Discard message - TDLS disabled "
+ "or unsupported by driver");
return;
}
case WLAN_TDLS_TEARDOWN:
wpa_tdls_recv_teardown(sm, src_addr, buf, len);
break;
+ case WLAN_TDLS_DISCOVERY_REQUEST:
+ wpa_tdls_process_discovery_request(sm, src_addr, buf, len);
+ break;
default:
/* Kernel code will process remaining frames */
wpa_printf(MSG_DEBUG, "TDLS: Ignore TDLS frame action code %u",
if (sm == NULL)
return -1;
- sm->l2_tdls = l2_packet_init(sm->ifname, sm->own_addr,
+ sm->l2_tdls = l2_packet_init(sm->bridge_ifname ? sm->bridge_ifname :
+ sm->ifname,
+ sm->own_addr,
ETH_P_80211_ENCAP, wpa_supplicant_rx_tdls,
sm, 0);
if (sm->l2_tdls == NULL) {
return -1;
}
+ /*
+ * Drivers that support TDLS but don't implement the get_capa callback
+ * are assumed to perform everything internally
+ */
+ if (wpa_sm_tdls_get_capa(sm, &sm->tdls_supported,
+ &sm->tdls_external_setup) < 0) {
+ sm->tdls_supported = 1;
+ sm->tdls_external_setup = 0;
+ }
+
+ wpa_printf(MSG_DEBUG, "TDLS: TDLS operation%s supported by "
+ "driver", sm->tdls_supported ? "" : " not");
+ wpa_printf(MSG_DEBUG, "TDLS: Driver uses %s link setup",
+ sm->tdls_external_setup ? "external" : "internal");
+
return 0;
}
+void wpa_tdls_teardown_peers(struct wpa_sm *sm)
+{
+ struct wpa_tdls_peer *peer;
+
+ peer = sm->tdls;
+
+ wpa_printf(MSG_DEBUG, "TDLS: Tear down peers");
+
+ while (peer) {
+ wpa_printf(MSG_DEBUG, "TDLS: Tear down peer " MACSTR,
+ MAC2STR(peer->addr));
+ if (sm->tdls_external_setup)
+ wpa_tdls_send_teardown(sm, peer->addr,
+ WLAN_REASON_DEAUTH_LEAVING);
+ else
+ wpa_sm_tdls_oper(sm, TDLS_TEARDOWN, peer->addr);
+
+ peer = peer->next;
+ }
+}
+
+
static void wpa_tdls_remove_peers(struct wpa_sm *sm)
{
struct wpa_tdls_peer *peer, *tmp;
wpa_printf(MSG_DEBUG, "TDLS: %s", enabled ? "enabled" : "disabled");
sm->tdls_disabled = !enabled;
}
+
+
+int wpa_tdls_is_external_setup(struct wpa_sm *sm)
+{
+ return sm->tdls_external_setup;
+}
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