tdls.c revision 0ccb66edb8d2a0a397320ace3ec2a03fb0d00d5f
18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_supplicant - TDLS 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2010-2011, Atheros Communications 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "utils/includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "utils/common.h" 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "utils/eloop.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "utils/os.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_defs.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/sha256.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/crypto.h" 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/aes_wrap.h" 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "rsn_supp/wpa.h" 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "rsn_supp/wpa_ie.h" 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "rsn_supp/wpa_i.h" 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "drivers/driver.h" 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "l2_packet/l2_packet.h" 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_LONG_FRAME BIT(0) 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_ALT_RSN_IE BIT(1) 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_DIFF_BSSID BIT(2) 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_SHORT_LIFETIME BIT(3) 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_WRONG_LIFETIME_RESP BIT(4) 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_WRONG_LIFETIME_CONF BIT(5) 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_LONG_LIFETIME BIT(6) 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_CONCURRENT_INIT BIT(7) 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_NO_TPK_EXPIRATION BIT(8) 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_DECLINE_RESP BIT(9) 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TESTING_IGNORE_AP_PROHIBIT BIT(10) 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtunsigned int tdls_testing = 0; 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TPK_LIFETIME 43200 /* 12 hours */ 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TPK_RETRY_COUNT 3 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TPK_TIMEOUT 5000 /* in milliseconds */ 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_MIC_LEN 16 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TIMEOUT_LEN 4 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_tdls_ftie { 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_type; /* FTIE */ 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_len; 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mic_ctrl[2]; 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mic[TDLS_MIC_LEN]; 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 Anonce[WPA_NONCE_LEN]; /* Responder Nonce in TDLS */ 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 Snonce[WPA_NONCE_LEN]; /* Initiator Nonce in TDLS */ 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* followed by optional elements */ 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} STRUCT_PACKED; 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_tdls_timeoutie { 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_type; /* Timeout IE */ 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_len; 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 interval_type; 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 value[TDLS_TIMEOUT_LEN]; 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} STRUCT_PACKED; 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_tdls_lnkid { 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_type; /* Link Identifier IE */ 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_len; 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 bssid[ETH_ALEN]; 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 init_sta[ETH_ALEN]; 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 resp_sta[ETH_ALEN]; 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} STRUCT_PACKED; 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* TDLS frame headers as per IEEE Std 802.11z-2010 */ 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_tdls_frame { 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 payloadtype; /* IEEE80211_TDLS_RFTYPE */ 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 category; /* Category */ 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action; /* Action (enum tdls_frame_type) */ 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} STRUCT_PACKED; 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * wpa_add_tdls_timeoutie(u8 *pos, u8 *ie, size_t ie_len, u32 tsecs); 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_tpk_retry_timeout(void *eloop_ctx, void *timeout_ctx); 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_peer_free(struct wpa_sm *sm, struct wpa_tdls_peer *peer); 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_MAX_IE_LEN 80 851f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt#define IEEE80211_MAX_SUPP_RATES 32 861f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_tdls_peer { 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *next; 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int initiator; /* whether this end was initiator for TDLS setup */ 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 addr[ETH_ALEN]; /* other end MAC address */ 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 inonce[WPA_NONCE_LEN]; /* Initiator Nonce */ 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rnonce[WPA_NONCE_LEN]; /* Responder Nonce */ 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rsnie_i[TDLS_MAX_IE_LEN]; /* Initiator RSN IE */ 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t rsnie_i_len; 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rsnie_p[TDLS_MAX_IE_LEN]; /* Peer RSN IE */ 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t rsnie_p_len; 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime; 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int cipher; /* Selected cipher (WPA_CIPHER_*) */ 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dtoken; 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct tpk { 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 kck[16]; /* TPK-KCK */ 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 tk[16]; /* TPK-TK; assuming only CCMP will be used */ 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } tpk; 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tpk_set; 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tpk_success; 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct tpk_timer { 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dest[ETH_ALEN]; 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int count; /* Retry Count */ 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int timer; /* Timeout in milliseconds */ 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action_code; /* TDLS frame type */ 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token; 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status_code; 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int buf_len; /* length of TPK message for retransmission */ 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *buf; /* buffer for TPK message */ 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } sm_tmr; 1181f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1191f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt u16 capability; 1201f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1211f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 1221f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt size_t supp_rates_len; 123f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 124f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt struct ieee80211_ht_capabilities *ht_capabilities; 12533e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt struct ieee80211_vht_capabilities *vht_capabilities; 126f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 127f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt u8 qos_info; 128f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 129f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt u8 *ext_capab; 130f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt size_t ext_capab_len; 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_get_privacy(struct wpa_sm *sm) 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Get info needed from supplicant to check if the current BSS supports 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * security. Other than OPEN mode, rest are considered secured 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * WEP/WPA/WPA2 hence TDLS frames are processed for TPK handshake. 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return sm->pairwise_cipher != WPA_CIPHER_NONE; 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * wpa_add_ie(u8 *pos, const u8 *ie, size_t ie_len) 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, ie, ie_len); 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos + ie_len; 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_del_key(struct wpa_sm *sm, struct wpa_tdls_peer *peer) 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_sm_set_key(sm, WPA_ALG_NONE, peer->addr, 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0, 0, NULL, 0, NULL, 0) < 0) { 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: Failed to delete TPK-TK from " 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "the driver"); 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_set_key(struct wpa_sm *sm, struct wpa_tdls_peer *peer) 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 key_len; 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rsc[6]; 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wpa_alg alg; 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(rsc, 0, 6); 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (peer->cipher) { 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPA_CIPHER_CCMP: 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt alg = WPA_ALG_CCMP; 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_len = 16; 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPA_CIPHER_NONE: 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Pairwise Cipher Suite: " 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "NONE - do not use pairwise keys"); 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: Unsupported pairwise cipher %d", 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise_cipher); 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_sm_set_key(sm, alg, peer->addr, -1, 1, 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsc, sizeof(rsc), peer->tpk.tk, key_len) < 0) { 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: Failed to set TPK to the " 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "driver"); 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_send_tpk_msg(struct wpa_sm *sm, const u8 *dst, 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action_code, u8 dialog_token, 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status_code, const u8 *buf, size_t len) 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_sm_send_tdls_mgmt(sm, dst, action_code, dialog_token, 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status_code, buf, len); 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_tpk_send(struct wpa_sm *sm, const u8 *dest, u8 action_code, 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u16 status_code, 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *msg, size_t msg_len) 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK send dest=" MACSTR " action_code=%u " 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "dialog_token=%u status_code=%u msg_len=%u", 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dest), action_code, dialog_token, status_code, 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned int) msg_len); 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_send_tpk_msg(sm, dest, action_code, dialog_token, 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status_code, msg, msg_len)) { 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to send message " 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(action_code=%u)", action_code); 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (action_code == WLAN_TDLS_SETUP_CONFIRM || 2261f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt action_code == WLAN_TDLS_TEARDOWN || 2271f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt action_code == WLAN_TDLS_DISCOVERY_REQUEST || 2281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt action_code == WLAN_TDLS_DISCOVERY_RESPONSE) 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; /* No retries */ 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, dest, ETH_ALEN) == 0) 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL) { 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No matching entry found for " 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "retry " MACSTR, MAC2STR(dest)); 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer); 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.count = TPK_RETRY_COUNT; 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.timer = TPK_TIMEOUT; 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Copy message to resend on timeout */ 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->sm_tmr.dest, dest, ETH_ALEN); 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.action_code = action_code; 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.dialog_token = dialog_token; 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.status_code = status_code; 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf_len = msg_len; 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(peer->sm_tmr.buf); 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf = os_malloc(msg_len); 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->sm_tmr.buf == NULL) 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->sm_tmr.buf, msg, msg_len); 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Retry timeout registered " 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(action_code=%u)", action_code); 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_register_timeout(peer->sm_tmr.timer / 1000, 0, 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_retry_timeout, sm, peer); 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2671f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtstatic int wpa_tdls_do_teardown(struct wpa_sm *sm, struct wpa_tdls_peer *peer, 2681f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt u16 reason_code, int free_peer) 2691f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 2701f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt int ret; 2711f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 2721f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_external_setup) { 2731f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt ret = wpa_tdls_send_teardown(sm, peer->addr, reason_code); 2741f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 2751f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* disable the link after teardown was sent */ 2761f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, peer->addr); 2771f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } else { 2781f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt ret = wpa_sm_tdls_oper(sm, TDLS_TEARDOWN, peer->addr); 2791f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 2801f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 2811f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_external_setup || free_peer) 2821f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_peer_free(sm, peer); 2831f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 2841f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return ret; 2851f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 2861f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 2871f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_tpk_retry_timeout(void *eloop_ctx, void *timeout_ctx) 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_sm *sm = eloop_ctx; 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer = timeout_ctx; 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->sm_tmr.count) { 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.count--; 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.timer = TPK_TIMEOUT; 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Retrying sending of message " 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(action_code=%u)", 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.action_code); 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->sm_tmr.buf == NULL) { 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No retry buffer available " 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "for action_code=%u", 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.action_code); 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer); 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* resend TPK Handshake Message to Peer */ 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_send_tpk_msg(sm, peer->sm_tmr.dest, 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.action_code, 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.dialog_token, 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.status_code, 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf, 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf_len)) { 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to retry " 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "transmission"); 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer); 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_register_timeout(peer->sm_tmr.timer / 1000, 0, 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_retry_timeout, sm, peer); 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer); 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending Teardown Request"); 3291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_do_teardown(sm, peer, 3301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, 1); 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_tpk_retry_timeout_cancel(struct wpa_sm *sm, 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer, 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action_code) 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (action_code == peer->sm_tmr.action_code) { 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Retry timeout cancelled for " 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "action_code=%u", action_code); 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Cancel Timeout registered */ 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer); 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* free all resources meant for retry */ 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(peer->sm_tmr.buf); 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf = NULL; 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.count = 0; 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.timer = 0; 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf_len = 0; 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.action_code = 0xff; 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Error in cancelling retry timeout " 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(Unknown action_code=%u)", action_code); 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_generate_tpk(struct wpa_tdls_peer *peer, 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *own_addr, const u8 *bssid) 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 key_input[SHA256_MAC_LEN]; 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *nonce[2]; 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[2]; 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 data[3 * ETH_ALEN]; 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* IEEE Std 802.11z-2010 8.5.9.1: 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * TPK-Key-Input = SHA-256(min(SNonce, ANonce) || max(SNonce, ANonce)) 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPA_NONCE_LEN; 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPA_NONCE_LEN; 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->inonce, peer->rnonce, WPA_NONCE_LEN) < 0) { 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nonce[0] = peer->inonce; 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nonce[1] = peer->rnonce; 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nonce[0] = peer->rnonce; 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nonce[1] = peer->inonce; 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: min(Nonce)", nonce[0], WPA_NONCE_LEN); 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: max(Nonce)", nonce[1], WPA_NONCE_LEN); 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha256_vector(2, nonce, len, key_input); 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-Key-Input", 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_input, SHA256_MAC_LEN); 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * TPK-Key-Data = KDF-N_KEY(TPK-Key-Input, "TDLS PMK", 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * min(MAC_I, MAC_R) || max(MAC_I, MAC_R) || BSSID || N_KEY) 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * TODO: is N_KEY really included in KDF Context and if so, in which 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * presentation format (little endian 16-bit?) is it used? It gets 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * added by the KDF anyway.. 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(own_addr, peer->addr, ETH_ALEN) < 0) { 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data, own_addr, ETH_ALEN); 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data + ETH_ALEN, peer->addr, ETH_ALEN); 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data, peer->addr, ETH_ALEN); 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data + ETH_ALEN, own_addr, ETH_ALEN); 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data + 2 * ETH_ALEN, bssid, ETH_ALEN); 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: KDF Context", data, sizeof(data)); 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha256_prf(key_input, SHA256_MAC_LEN, "TDLS PMK", data, sizeof(data), 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) &peer->tpk, sizeof(peer->tpk)); 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-KCK", 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->tpk.kck, sizeof(peer->tpk.kck)); 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-TK", 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->tpk.tk, sizeof(peer->tpk.tk)); 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->tpk_set = 1; 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_ftie_mic - Calculate TDLS FTIE MIC 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @kck: TPK-KCK 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @lnkid: Pointer to the beginning of Link Identifier IE 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @rsnie: Pointer to the beginning of RSN IE used for handshake 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @timeoutie: Pointer to the beginning of Timeout IE used for handshake 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @ftie: Pointer to the beginning of FT IE 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @mic: Pointer for writing MIC 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Calculate MIC for TDLS frame. 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_ftie_mic(const u8 *kck, u8 trans_seq, const u8 *lnkid, 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *rsnie, const u8 *timeoutie, 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ftie, u8 *mic) 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *buf, *pos; 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *_ftie; 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpa_tdls_lnkid *_lnkid; 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int len = 2 * ETH_ALEN + 1 + 2 + lnkid[1] + 2 + rsnie[1] + 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2 + timeoutie[1] + 2 + ftie[1]; 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf = os_zalloc(len); 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!buf) { 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: No memory for MIC calculation"); 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = buf; 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _lnkid = (const struct wpa_tdls_lnkid *) lnkid; 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 1) TDLS initiator STA MAC address */ 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, _lnkid->init_sta, ETH_ALEN); 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 2) TDLS responder STA MAC address */ 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, _lnkid->resp_sta, ETH_ALEN); 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3) Transaction Sequence number */ 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = trans_seq; 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4) Link Identifier IE */ 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, lnkid, 2 + lnkid[1]); 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + lnkid[1]; 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 5) RSN IE */ 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, rsnie, 2 + rsnie[1]); 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + rsnie[1]; 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 6) Timeout Interval IE */ 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, timeoutie, 2 + timeoutie[1]); 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + timeoutie[1]; 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 7) FTIE, with the MIC field of the FTIE set to 0 */ 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, ftie, 2 + ftie[1]); 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie = (struct wpa_tdls_ftie *) pos; 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(_ftie->mic, 0, TDLS_MIC_LEN); 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + ftie[1]; 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Data for FTIE MIC", buf, pos - buf); 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "TDLS: KCK", kck, 16); 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = omac1_aes_128(kck, buf, pos - buf, mic); 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(buf); 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE MIC", mic, 16); 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_key_mic_teardown - Calculate TDLS FTIE MIC for Teardown frame 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @kck: TPK-KCK 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @trans_seq: Transaction Sequence Number (4 - Teardown) 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @rcode: Reason code for Teardown 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @dtoken: Dialog Token used for that particular link 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @lnkid: Pointer to the beginning of Link Identifier IE 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @ftie: Pointer to the beginning of FT IE 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @mic: Pointer for writing MIC 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Calculate MIC for TDLS frame. 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_key_mic_teardown(const u8 *kck, u8 trans_seq, u16 rcode, 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dtoken, const u8 *lnkid, 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ftie, u8 *mic) 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *buf, *pos; 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *_ftie; 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int len; 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (lnkid == NULL) 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = 2 + lnkid[1] + sizeof(rcode) + sizeof(dtoken) + 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(trans_seq) + 2 + ftie[1]; 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf = os_zalloc(len); 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!buf) { 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: No memory for MIC calculation"); 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = buf; 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 1) Link Identifier IE */ 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, lnkid, 2 + lnkid[1]); 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + lnkid[1]; 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 2) Reason Code */ 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, rcode); 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(rcode); 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3) Dialog token */ 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = dtoken; 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4) Transaction Sequence number */ 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = trans_seq; 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 7) FTIE, with the MIC field of the FTIE set to 0 */ 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, ftie, 2 + ftie[1]); 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie = (struct wpa_tdls_ftie *) pos; 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(_ftie->mic, 0, TDLS_MIC_LEN); 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + ftie[1]; 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Data for FTIE MIC", buf, pos - buf); 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "TDLS: KCK", kck, 16); 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = omac1_aes_128(kck, buf, pos - buf, mic); 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(buf); 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE MIC", mic, 16); 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_supplicant_verify_tdls_mic(u8 trans_seq, 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer, 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *lnkid, const u8 *timeoutie, 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpa_tdls_ftie *ftie) 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mic[16]; 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->tpk_set) { 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_ftie_mic(peer->tpk.kck, trans_seq, lnkid, 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p, timeoutie, (u8 *) ftie, 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mic); 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(mic, ftie->mic, 16) != 0) { 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Invalid MIC in FTIE - " 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "dropping packet"); 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Received MIC", 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->mic, 16); 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Calculated MIC", 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mic, 16); 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: Could not verify TDLS MIC, " 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK not set - dropping packet"); 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_supplicant_verify_tdls_mic_teardown( 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 trans_seq, u16 rcode, u8 dtoken, struct wpa_tdls_peer *peer, 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *lnkid, const struct wpa_tdls_ftie *ftie) 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mic[16]; 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->tpk_set) { 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_key_mic_teardown(peer->tpk.kck, trans_seq, rcode, 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dtoken, lnkid, (u8 *) ftie, mic); 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(mic, ftie->mic, 16) != 0) { 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Invalid MIC in Teardown - " 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "dropping packet"); 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Could not verify TDLS Teardown " 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "MIC, TPK not set - dropping packet"); 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_tpk_timeout(void *eloop_ctx, void *timeout_ctx) 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_sm *sm = eloop_ctx; 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer = timeout_ctx; 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * On TPK lifetime expiration, we have an option of either tearing down 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * the direct link or trying to re-initiate it. The selection of what 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * to do is not strictly speaking controlled by our role in the expired 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * link, but for now, use that to select whether to renew or tear down 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * the link. 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->initiator) { 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime expired for " MACSTR 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " - try to renew", MAC2STR(peer->addr)); 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_start(sm, peer->addr); 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime expired for " MACSTR 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " - tear down", MAC2STR(peer->addr)); 6071f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_do_teardown(sm, peer, 6081f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, 1); 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_peer_free(struct wpa_sm *sm, struct wpa_tdls_peer *peer) 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Clear state for peer " MACSTR, 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(peer->addr)); 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_timeout, sm, peer); 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer); 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->initiator = 0; 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(peer->sm_tmr.buf); 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf = NULL; 622f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_free(peer->ht_capabilities); 623f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->ht_capabilities = NULL; 62433e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt os_free(peer->vht_capabilities); 62533e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt peer->vht_capabilities = NULL; 626f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_free(peer->ext_capab); 627f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->ext_capab = NULL; 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i_len = peer->rsnie_p_len = 0; 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->cipher = 0; 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->tpk_set = peer->tpk_success = 0; 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&peer->tpk, 0, sizeof(peer->tpk)); 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(peer->inonce, 0, WPA_NONCE_LEN); 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(peer->rnonce, 0, WPA_NONCE_LEN); 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_linkid(struct wpa_sm *sm, struct wpa_tdls_peer *peer, 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid) 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid->ie_type = WLAN_EID_LINK_ID; 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid->ie_len = 3 * ETH_ALEN; 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(lnkid->bssid, sm->bssid, ETH_ALEN); 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->initiator) { 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(lnkid->init_sta, sm->own_addr, ETH_ALEN); 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(lnkid->resp_sta, peer->addr, ETH_ALEN); 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(lnkid->init_sta, peer->addr, ETH_ALEN); 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(lnkid->resp_sta, sm->own_addr, ETH_ALEN); 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtint wpa_tdls_send_teardown(struct wpa_sm *sm, const u8 *addr, u16 reason_code) 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid lnkid; 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token; 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *rbuf, *pos; 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ielen; 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6621f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Find the node and free from the list */ 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL) { 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No matching entry found for " 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Teardown " MACSTR, MAC2STR(addr)); 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dialog_token = peer->dtoken; 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS Teardown for " MACSTR, 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(addr)); 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = 0; 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm) && peer->tpk_set && peer->tpk_success) { 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* To add FTIE for Teardown request and compute MIC */ 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen += sizeof(*ftie); 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen += 170; 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf = os_zalloc(ielen + 1); 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rbuf == NULL) 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = rbuf; 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6974b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (!wpa_tdls_get_privacy(sm) || !peer->tpk_set || !peer->tpk_success) { 698f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (reason_code != WLAN_REASON_DEAUTH_LEAVING) { 699f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt /* Overwrite the reason code */ 700f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt reason_code = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED; 701f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_ies; 7034b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt } 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) pos; 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_type = WLAN_EID_FAST_BSS_TRANSITION; 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Using the recent nonce which should be for CONFIRM frame */ 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Anonce, peer->rnonce, WPA_NONCE_LEN); 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Snonce, peer->inonce, WPA_NONCE_LEN); 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len = sizeof(struct wpa_tdls_ftie) - 2; 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (ftie + 1); 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) { 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - add extra subelem to " 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "FTIE"); 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len += 170; 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 255; /* FTIE subelem */ 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 168; /* FTIE subelem length */ 7191f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt pos += 168; 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE for TDLS Teardown handshake", 7231f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt (u8 *) ftie, pos - (u8 *) ftie); 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* compute MIC before sending */ 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_linkid(sm, peer, &lnkid); 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_key_mic_teardown(peer->tpk.kck, 4, reason_code, 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dialog_token, (u8 *) &lnkid, (u8 *) ftie, 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->mic); 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_ies: 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: register for a Timeout handler, if Teardown is not received at 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * the other end, then try again another time */ 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* request driver to send Teardown using this FTIE */ 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_send(sm, addr, WLAN_TDLS_TEARDOWN, 0, 7374b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt reason_code, rbuf, pos - rbuf); 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(rbuf); 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* clear the Peerkey statemachine */ 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7471f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtint wpa_tdls_teardown_link(struct wpa_sm *sm, const u8 *addr, u16 reason_code) 7481f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 7491f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer; 7501f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7511f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 7521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 7531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 7551f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 7561f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt break; 7571f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 7581f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7591f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer == NULL) { 7601f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Could not find peer " MACSTR 7611f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt " for link Teardown", MAC2STR(addr)); 7621f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 7631f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 7641f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7651f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (!peer->tpk_success) { 7661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Peer " MACSTR 7671f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt " not connected - cannot Teardown link", MAC2STR(addr)); 7681f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 7691f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 7701f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7711f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return wpa_tdls_do_teardown(sm, peer, reason_code, 0); 7721f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 7731f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7741f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7751f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtvoid wpa_tdls_disable_link(struct wpa_sm *sm, const u8 *addr) 7761f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 7771f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer; 7781f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7791f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 7801f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 7811f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt break; 7821f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 7831f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7841f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer) { 7851f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, addr); 7861f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_peer_free(sm, peer); 7871f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 7881f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 7891f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7901f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_recv_teardown(struct wpa_sm *sm, const u8 *src_addr, 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *buf, size_t len) 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer = NULL; 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid; 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse kde; 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 reason_code; 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ielen; 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Find the node and free from the list */ 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, src_addr, ETH_ALEN) == 0) 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL) { 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No matching entry found for " 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Teardown " MACSTR, MAC2STR(src_addr)); 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = buf; 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 1 /* pkt_type */ + 1 /* Category */ + 1 /* Action */; 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt reason_code = WPA_GET_LE16(pos); 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS Teardown Request from " MACSTR 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " (reason code %u)", MAC2STR(src_addr), reason_code); 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = len - (pos - buf); /* start of IE in buf */ 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_parse_ies((const u8 *) pos, ielen, &kde) < 0) { 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to parse IEs in Teardown"); 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.lnkid == NULL || kde.lnkid_len < 3 * ETH_ALEN) { 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No Link Identifier IE in TDLS " 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Teardown"); 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid = (struct wpa_tdls_lnkid *) kde.lnkid; 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm) || !peer->tpk_set || !peer->tpk_success) 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_ftie; 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.ftie == NULL || kde.ftie_len < sizeof(*ftie)) { 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No FTIE in TDLS Teardown"); 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) kde.ftie; 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Process MIC check to see if TDLS Teardown is right */ 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_verify_tdls_mic_teardown(4, reason_code, 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dtoken, peer, 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) lnkid, ftie) < 0) { 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: MIC failure for TDLS " 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Teardown Request from " MACSTR, MAC2STR(src_addr)); 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_ftie: 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Request the driver to disable the direct link and clear associated 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * keys. 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr); 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* clear the Peerkey statemachine */ 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_send_error - To send suitable TDLS status response with 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * appropriate status code mentioning reason for error/failure. 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @dst - MAC addr of Peer station 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @tdls_action - TDLS frame type for which error code is sent 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @status - status code mentioning reason 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_send_error(struct wpa_sm *sm, const u8 *dst, 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 tdls_action, u8 dialog_token, u16 status) 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending error to " MACSTR 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " (action=%u status=%u)", 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dst), tdls_action, status); 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_tdls_tpk_send(sm, dst, tdls_action, dialog_token, status, 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt NULL, 0); 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8881f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtstatic struct wpa_tdls_peer * 8894b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidtwpa_tdls_add_peer(struct wpa_sm *sm, const u8 *addr, int *existing) 8901f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 8911f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer; 8921f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 8934b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (existing) 8944b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt *existing = 0; 8954b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 8964b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) { 8974b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (existing) 8984b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt *existing = 1; 8994b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt return peer; /* re-use existing entry */ 9004b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt } 9014b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt } 9024b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt 9031f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Creating peer entry for " MACSTR, 9041f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt MAC2STR(addr)); 9051f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 9061f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt peer = os_zalloc(sizeof(*peer)); 9071f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer == NULL) 9081f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return NULL; 9091f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 9101f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt os_memcpy(peer->addr, addr, ETH_ALEN); 9111f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt peer->next = sm->tdls; 9121f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt sm->tdls = peer; 9131f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 9141f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return peer; 9151f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 9161f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 9171f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_send_tpk_m1(struct wpa_sm *sm, 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer) 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t buf_len; 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie timeoutie; 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 rsn_capab; 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *rbuf, *pos, *count_pos; 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 count; 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ie_hdr *hdr; 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) { 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No security used on the link"); 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i_len = 0; 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_rsnie; 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * TPK Handshake Message 1: 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * FTIE: ANonce=0, SNonce=initiator nonce MIC=0, DataKDs=(RSNIE_I, 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Timeout Interval IE)) 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Filling RSN IE */ 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct rsn_ie_hdr *) peer->rsnie_i; 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->elem_id = WLAN_EID_RSN; 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(hdr->version, RSN_VERSION); 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (hdr + 1); 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED); 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt count_pos = pos; 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt count = 0; 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * AES-CCMP is the default Encryption preferred for TDLS, so 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * RSN IE is filled only with CCMP CIPHER 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Note: TKIP is not used to encrypt TDLS link. 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Regardless of the cipher used on the AP connection, select CCMP 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * here. 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP); 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt count++; 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(count_pos, count); 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, 1); 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_TPK_HANDSHAKE); 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_capab = WPA_CAPABILITY_PEERKEY_ENABLED; 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_capab |= RSN_NUM_REPLAY_COUNTERS_16 << 2; 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_ALT_RSN_IE) { 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Use alternative RSN IE for " 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "testing"); 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_capab = WPA_CAPABILITY_PEERKEY_ENABLED; 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, rsn_capab); 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_ALT_RSN_IE) { 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Number of PMKIDs */ 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 0x00; 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 0x00; 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->len = (pos - peer->rsnie_i) - 2; 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i_len = pos - peer->rsnie_i; 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE for TPK handshake", 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i, peer->rsnie_i_len); 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_rsnie: 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len = 0; 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm)) 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += peer->rsnie_i_len + sizeof(struct wpa_tdls_ftie) + 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct wpa_tdls_timeoutie); 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm) && 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (tdls_testing & TDLS_TESTING_LONG_FRAME)) 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += 170; 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_DIFF_BSSID) 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += sizeof(struct wpa_tdls_lnkid); 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf = os_zalloc(buf_len + 1); 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rbuf == NULL) { 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = rbuf; 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_ies; 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Initiator RSN IE */ 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_ie(pos, peer->rsnie_i, peer->rsnie_i_len); 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) pos; 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_type = WLAN_EID_FAST_BSS_TRANSITION; 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len = sizeof(struct wpa_tdls_ftie) - 2; 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_get_random(peer->inonce, WPA_NONCE_LEN)) { 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TDLS: Failed to get random data for initiator Nonce"); 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(rbuf); 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Initiator Nonce for TPK handshake", 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->inonce, WPA_NONCE_LEN); 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Snonce, peer->inonce, WPA_NONCE_LEN); 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE for TPK Handshake M1", 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) ftie, sizeof(struct wpa_tdls_ftie)); 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (ftie + 1); 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) { 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - add extra subelem to " 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "FTIE"); 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len += 170; 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 255; /* FTIE subelem */ 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 168; /* FTIE subelem length */ 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 168; 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Lifetime */ 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->lifetime = TPK_LIFETIME; 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_SHORT_LIFETIME) { 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use short TPK " 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "lifetime"); 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->lifetime = 301; 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_LIFETIME) { 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use long TPK " 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "lifetime"); 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->lifetime = 0xffffffff; 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_tdls_timeoutie(pos, (u8 *) &timeoutie, 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(timeoutie), peer->lifetime); 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds", peer->lifetime); 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_ies: 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_DIFF_BSSID) { 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use incorrect BSSID in " 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Link Identifier"); 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *l = (struct wpa_tdls_lnkid *) pos; 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_linkid(sm, peer, l); 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt l->bssid[5] ^= 0x01; 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(*l); 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending TDLS Setup Request / TPK " 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Handshake Message 1 (peer " MACSTR ")", 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(peer->addr)); 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10881f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_tpk_send(sm, peer->addr, WLAN_TDLS_SETUP_REQUEST, 1, 0, 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf, pos - rbuf); 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(rbuf); 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_send_tpk_m2(struct wpa_sm *sm, 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const unsigned char *src_addr, u8 dtoken, 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid, 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpa_tdls_peer *peer) 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *rbuf, *pos; 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t buf_len; 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime; 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie timeoutie; 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len = 0; 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm)) { 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Peer RSN IE, FTIE(Initiator Nonce, Responder Nonce), 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Lifetime */ 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += peer->rsnie_i_len + sizeof(struct wpa_tdls_ftie) + 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct wpa_tdls_timeoutie); 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += 170; 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf = os_zalloc(buf_len + 1); 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rbuf == NULL) 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = rbuf; 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_ies; 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Peer RSN IE */ 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_ie(pos, peer->rsnie_p, peer->rsnie_p_len); 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) pos; 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_type = WLAN_EID_FAST_BSS_TRANSITION; 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: ftie->mic_control to set 2-RESPONSE */ 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Anonce, peer->rnonce, WPA_NONCE_LEN); 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Snonce, peer->inonce, WPA_NONCE_LEN); 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len = sizeof(struct wpa_tdls_ftie) - 2; 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE for TPK M2", 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) ftie, sizeof(*ftie)); 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (ftie + 1); 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) { 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - add extra subelem to " 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "FTIE"); 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len += 170; 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 255; /* FTIE subelem */ 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 168; /* FTIE subelem length */ 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 168; 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Lifetime */ 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime = peer->lifetime; 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_WRONG_LIFETIME_RESP) { 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use wrong TPK " 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "lifetime in response"); 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime++; 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_tdls_timeoutie(pos, (u8 *) &timeoutie, 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(timeoutie), lifetime); 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds from initiator", 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime); 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* compute MIC before sending */ 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_ftie_mic(peer->tpk.kck, 2, (u8 *) lnkid, peer->rsnie_p, 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) &timeoutie, (u8 *) ftie, ftie->mic); 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_ies: 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_send(sm, src_addr, WLAN_TDLS_SETUP_RESPONSE, dtoken, 0, 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf, pos - rbuf); 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(rbuf); 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_send_tpk_m3(struct wpa_sm *sm, 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const unsigned char *src_addr, u8 dtoken, 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid, 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpa_tdls_peer *peer) 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *rbuf, *pos; 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t buf_len; 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie timeoutie; 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime; 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len = 0; 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm)) { 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Peer RSN IE, FTIE(Initiator Nonce, Responder Nonce), 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Lifetime */ 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += peer->rsnie_i_len + sizeof(struct wpa_tdls_ftie) + 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct wpa_tdls_timeoutie); 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += 170; 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf = os_zalloc(buf_len + 1); 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rbuf == NULL) 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = rbuf; 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_ies; 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Peer RSN IE */ 12118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_ie(pos, peer->rsnie_p, peer->rsnie_p_len); 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) pos; 12148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_type = WLAN_EID_FAST_BSS_TRANSITION; 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /*TODO: ftie->mic_control to set 3-CONFIRM */ 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Anonce, peer->rnonce, WPA_NONCE_LEN); 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Snonce, peer->inonce, WPA_NONCE_LEN); 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len = sizeof(struct wpa_tdls_ftie) - 2; 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (ftie + 1); 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) { 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - add extra subelem to " 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "FTIE"); 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len += 170; 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 255; /* FTIE subelem */ 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 168; /* FTIE subelem length */ 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 168; 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Lifetime */ 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime = peer->lifetime; 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_WRONG_LIFETIME_CONF) { 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use wrong TPK " 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "lifetime in confirm"); 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime++; 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_tdls_timeoutie(pos, (u8 *) &timeoutie, 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(timeoutie), lifetime); 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds", 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime); 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* compute MIC before sending */ 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_ftie_mic(peer->tpk.kck, 3, (u8 *) lnkid, peer->rsnie_p, 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) &timeoutie, (u8 *) ftie, ftie->mic); 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_ies: 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_send(sm, src_addr, WLAN_TDLS_SETUP_CONFIRM, dtoken, 0, 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf, pos - rbuf); 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(rbuf); 12558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12601f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtstatic int wpa_tdls_send_discovery_response(struct wpa_sm *sm, 12611f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer, 12621f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt u8 dialog_token) 12631f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 12641f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending TDLS Discovery Response " 12651f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt "(peer " MACSTR ")", MAC2STR(peer->addr)); 12661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 12671f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return wpa_tdls_tpk_send(sm, peer->addr, WLAN_TDLS_DISCOVERY_RESPONSE, 12681f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt dialog_token, 0, NULL, 0); 12691f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 12701f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 12711f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 12721f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtstatic int 12731f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtwpa_tdls_process_discovery_request(struct wpa_sm *sm, const u8 *addr, 12741f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt const u8 *buf, size_t len) 12751f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 12761f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_eapol_ie_parse kde; 12771f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt const struct wpa_tdls_lnkid *lnkid; 12781f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer; 12791f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt size_t min_req_len = sizeof(struct wpa_tdls_frame) + 12801f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1 /* dialog token */ + sizeof(struct wpa_tdls_lnkid); 12811f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt u8 dialog_token; 12821f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 12831f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Discovery Request from " MACSTR, 12841f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt MAC2STR(addr)); 12851f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 12861f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (len < min_req_len) { 12871f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS Discovery Request is too short: " 12881f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt "%d", (int) len); 12891f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 12901f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 12911f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 12921f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt dialog_token = buf[sizeof(struct wpa_tdls_frame)]; 12931f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 12941f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wpa_supplicant_parse_ies(buf + sizeof(struct wpa_tdls_frame) + 1, 12951f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt len - (sizeof(struct wpa_tdls_frame) + 1), 12961f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt &kde) < 0) 12971f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 12981f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 12991f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (!kde.lnkid) { 13001f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Link ID not found in Discovery " 13011f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt "Request"); 13021f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 13031f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 13041f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 13051f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt lnkid = (const struct wpa_tdls_lnkid *) kde.lnkid; 13061f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 13071f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (os_memcmp(sm->bssid, lnkid->bssid, ETH_ALEN) != 0) { 13081f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Discovery Request from different " 13091f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt " BSS " MACSTR, MAC2STR(lnkid->bssid)); 13101f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 13111f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 13121f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 13134b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt peer = wpa_tdls_add_peer(sm, addr, NULL); 13141f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer == NULL) 13151f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 13161f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 13171f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return wpa_tdls_send_discovery_response(sm, peer, dialog_token); 13181f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 13191f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 13201f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 13211f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtint wpa_tdls_send_discovery_request(struct wpa_sm *sm, const u8 *addr) 13221f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 13231f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 13241f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 13251f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 13261f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending Discovery Request to peer " 13271f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt MACSTR, MAC2STR(addr)); 13281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return wpa_tdls_tpk_send(sm, addr, WLAN_TDLS_DISCOVERY_REQUEST, 13291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1, 0, NULL, 0); 13301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 13311f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 13321f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 13331f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtstatic int copy_supp_rates(const struct wpa_eapol_ie_parse *kde, 13341f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer) 13351f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 13361f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (!kde->supp_rates) { 13371f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No supported rates received"); 13381f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 13391f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 1340a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt peer->supp_rates_len = merge_byte_arrays( 1341a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt peer->supp_rates, sizeof(peer->supp_rates), 1342a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt kde->supp_rates + 2, kde->supp_rates_len - 2, 1343a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt kde->ext_supp_rates + 2, kde->ext_supp_rates_len - 2); 13441f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return 0; 13451f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 13461f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 13471f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1348f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidtstatic int copy_peer_ht_capab(const struct wpa_eapol_ie_parse *kde, 1349f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt struct wpa_tdls_peer *peer) 1350f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt{ 1351f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (!kde->ht_capabilities || 1352f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt kde->ht_capabilities_len < 1353f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt sizeof(struct ieee80211_ht_capabilities) ) { 1354f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No supported ht capabilities " 1355f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt "received"); 1356f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 1357f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 1358f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1359f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (!peer->ht_capabilities) { 1360f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->ht_capabilities = 1361f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_zalloc(sizeof(struct ieee80211_ht_capabilities)); 1362f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (peer->ht_capabilities == NULL) 1363f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return -1; 1364f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 1365f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1366f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_memcpy(peer->ht_capabilities, kde->ht_capabilities, 1367f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt sizeof(struct ieee80211_ht_capabilities)); 1368f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Peer HT capabilities", 1369f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt (u8 *) peer->ht_capabilities, 1370f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt sizeof(struct ieee80211_ht_capabilities)); 1371f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1372f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 1373f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt} 1374f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1375f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 137633e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidtstatic int copy_peer_vht_capab(const struct wpa_eapol_ie_parse *kde, 137733e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt struct wpa_tdls_peer *peer) 137833e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt{ 137933e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt if (!kde->vht_capabilities || 138033e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt kde->vht_capabilities_len < 138133e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt sizeof(struct ieee80211_vht_capabilities) ) { 138233e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No supported vht capabilities " 138333e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt "received"); 138433e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt return 0; 138533e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt } 138633e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 138733e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt if (!peer->vht_capabilities) { 138833e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt peer->vht_capabilities = 138933e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt os_zalloc(sizeof(struct ieee80211_vht_capabilities)); 139033e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt if (peer->vht_capabilities == NULL) 139133e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt return -1; 139233e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt } 139333e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 139433e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt os_memcpy(peer->vht_capabilities, kde->vht_capabilities, 139533e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt sizeof(struct ieee80211_vht_capabilities)); 139633e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Peer VHT capabilities", 139733e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt (u8 *) peer->vht_capabilities, 139833e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt sizeof(struct ieee80211_vht_capabilities)); 139933e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 140033e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt return 0; 140133e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt} 140233e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 140333e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 1404f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidtstatic int copy_peer_ext_capab(const struct wpa_eapol_ie_parse *kde, 1405f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt struct wpa_tdls_peer *peer) 1406f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt{ 1407f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (!kde->ext_capab) { 1408f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No extended capabilities " 1409f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt "received"); 1410f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 1411f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 1412f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1413f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (!peer->ext_capab || peer->ext_capab_len < kde->ext_capab_len - 2) { 1414f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt /* Need to allocate buffer to fit the new information */ 1415f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_free(peer->ext_capab); 1416f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->ext_capab = os_zalloc(kde->ext_capab_len - 2); 1417f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (peer->ext_capab == NULL) 1418f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return -1; 1419f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 1420f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1421f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->ext_capab_len = kde->ext_capab_len - 2; 1422f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_memcpy(peer->ext_capab, kde->ext_capab + 2, peer->ext_capab_len); 1423f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1424f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 1425f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt} 1426f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1427f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 14288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_process_tpk_m1(struct wpa_sm *sm, const u8 *src_addr, 14298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *buf, size_t len) 14308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 14318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 14328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse kde; 14338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ie_data ie; 14348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int cipher; 14358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *cpos; 14368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie = NULL; 14378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie *timeoutie; 14388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid; 14398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime = 0; 14408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#if 0 14418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ie_hdr *hdr; 14428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos; 14438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 rsn_capab; 14448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 rsn_ver; 14458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif 14468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dtoken; 14478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 ielen; 14488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status = WLAN_STATUS_UNSPECIFIED_FAILURE; 14498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tdls_prohibited = sm->tdls_prohibited; 14501f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt int existing_peer = 0; 14518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 3 + 3) 14538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cpos = buf; 14568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cpos += 1 /* pkt_type */ + 1 /* Category */ + 1 /* Action */; 14578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* driver had already verified the frame format */ 14598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dtoken = *cpos++; /* dialog token */ 14608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Dialog Token in TPK M1 %d", dtoken); 14628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14634b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt peer = wpa_tdls_add_peer(sm, src_addr, &existing_peer); 14644b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (peer == NULL) 14654b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt goto error; 14661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 14670ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt /* If found, use existing entry instead of adding a new one; 14680ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * how to handle the case where both ends initiate at the 14690ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * same time? */ 14700ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (existing_peer) { 14710ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (peer->tpk_success) { 14720ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS Setup Request while " 14730ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "direct link is enabled - tear down the " 14740ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "old link first"); 14750ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt#if 0 14760ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt /* TODO: Disabling the link would be more proper 14770ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * operation here, but it seems to trigger a race with 14780ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * some drivers handling the new request frame. */ 14790ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr); 14800ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt#else 14810ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (sm->tdls_external_setup) 14820ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, 14830ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt src_addr); 14840ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt else 14850ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_tdls_del_key(sm, peer); 14860ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt#endif 14870ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_tdls_peer_free(sm, peer); 14880ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } 14890ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt 14900ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt /* 14910ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * An entry is already present, so check if we already sent a 14920ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * TDLS Setup Request. If so, compare MAC addresses and let the 14930ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * STA with the lower MAC address continue as the initiator. 14940ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * The other negotiation is terminated. 14950ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt */ 14960ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (peer->initiator) { 14970ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (os_memcmp(sm->own_addr, src_addr, ETH_ALEN) < 0) { 14980ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Discard request " 14990ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "from peer with higher address " 15000ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt MACSTR, MAC2STR(src_addr)); 15010ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt return -1; 15020ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } else { 15030ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Accept request " 15040ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "from peer with lower address " 15050ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt MACSTR " (terminate previously " 15060ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "initiated negotiation", 15070ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt MAC2STR(src_addr)); 15080ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (sm->tdls_external_setup) 15090ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, 15100ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt src_addr); 15110ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt else 15120ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_tdls_del_key(sm, peer); 15130ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_tdls_peer_free(sm, peer); 15140ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } 15150ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } 15160ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } 15170ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt 15181f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* capability information */ 15191f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt peer->capability = WPA_GET_LE16(cpos); 15201f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt cpos += 2; 15218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = len - (cpos - buf); /* start of IE in buf */ 15238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_parse_ies(cpos, ielen, &kde) < 0) { 15248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to parse IEs in TPK M1"); 15258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 15268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.lnkid == NULL || kde.lnkid_len < 3 * ETH_ALEN) { 15298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No valid Link Identifier IE in " 15308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M1"); 15318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 15328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Link ID Received from TPK M1", 15348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.lnkid, kde.lnkid_len); 15358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid = (struct wpa_tdls_lnkid *) kde.lnkid; 15368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(sm->bssid, lnkid->bssid, ETH_ALEN) != 0) { 15378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: TPK M1 from diff BSS"); 15388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_NOT_IN_SAME_BSS; 15398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 15408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK M1 - TPK initiator " MACSTR, 15438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(src_addr)); 15448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15451f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (copy_supp_rates(&kde, peer) < 0) 15461f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt goto error; 15471f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1548f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (copy_peer_ht_capab(&kde, peer) < 0) 1549f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt goto error; 1550f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 155133e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt if (copy_peer_vht_capab(&kde, peer) < 0) 155233e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt goto error; 155333e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 1554f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (copy_peer_ext_capab(&kde, peer) < 0) 1555f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt goto error; 1556f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1557f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->qos_info = kde.qosinfo; 1558f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 15598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 15608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_CONCURRENT_INIT) { 15614b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt peer = wpa_tdls_add_peer(sm, src_addr, NULL); 15624b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (peer == NULL) 15634b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt goto error; 15648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing concurrent initiation of " 15658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TDLS setup - send own request"); 15668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->initiator = 1; 15678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_send_tpk_m1(sm, peer); 15688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((tdls_testing & TDLS_TESTING_IGNORE_AP_PROHIBIT) && 15718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tdls_prohibited) { 15728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - ignore AP prohibition " 15738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "on TDLS"); 15748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tdls_prohibited = 0; 15758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 15778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_prohibited) { 15798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: TDLS prohibited in this BSS"); 15808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_REQUEST_DECLINED; 15818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 15828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) { 15858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.rsn_ie) { 15868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: RSN IE in TPK M1 while " 15878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "security is disabled"); 15888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_SECURITY_DISABLED; 15898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 15908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_rsn; 15928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.ftie == NULL || kde.ftie_len < sizeof(*ftie) || 15958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.rsn_ie == NULL) { 15968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No FTIE or RSN IE in TPK M1"); 15978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_PARAMETERS; 15988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 15998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.rsn_ie_len > TDLS_MAX_IE_LEN) { 16028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Too long Initiator RSN IE in " 16038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M1"); 16048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSNIE; 16058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 16068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_parse_wpa_ie_rsn(kde.rsn_ie, kde.rsn_ie_len, &ie) < 0) { 16098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to parse RSN IE in TPK M1"); 16108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSNIE; 16118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 16128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = ie.pairwise_cipher; 16158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (cipher & WPA_CIPHER_CCMP) { 16168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Using CCMP for direct link"); 16178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = WPA_CIPHER_CCMP; 16188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 16198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No acceptable cipher in TPK M1"); 16208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; 16218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 16228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((ie.capabilities & 16258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (WPA_CAPABILITY_NO_PAIRWISE | WPA_CAPABILITY_PEERKEY_ENABLED)) != 16268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_CAPABILITY_PEERKEY_ENABLED) { 16278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Invalid RSN Capabilities in " 16288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M1"); 16298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSN_IE_CAPAB; 16308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 16318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Lifetime */ 16348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.key_lifetime == NULL) { 16358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No Key Lifetime IE in TPK M1"); 16368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_UNACCEPTABLE_LIFETIME; 16378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 16388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt timeoutie = (struct wpa_tdls_timeoutie *) kde.key_lifetime; 16408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime = WPA_GET_LE32(timeoutie->value); 16418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds", lifetime); 16428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (lifetime < 300) { 16438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Too short TPK lifetime"); 16448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_UNACCEPTABLE_LIFETIME; 16458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 16468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_rsn: 16491f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt#ifdef CONFIG_TDLS_TESTING 16501f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (tdls_testing & TDLS_TESTING_CONCURRENT_INIT) { 16511f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (os_memcmp(sm->own_addr, peer->addr, ETH_ALEN) < 0) { 16521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* 16531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * The request frame from us is going to win, so do not 16541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * replace information based on this request frame from 16551f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * the peer. 16561f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt */ 16571f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt goto skip_rsn_check; 16581f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 16591f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 16601f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 16611f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 16628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->initiator = 0; /* Need to check */ 16638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dtoken = dtoken; 16648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) { 16668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i_len = 0; 16678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p_len = 0; 16688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->cipher = WPA_CIPHER_NONE; 16698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_rsn_check; 16708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) kde.ftie; 16738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->inonce, ftie->Snonce, WPA_NONCE_LEN); 16748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->rsnie_i, kde.rsn_ie, kde.rsn_ie_len); 16758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i_len = kde.rsn_ie_len; 16768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->cipher = cipher; 16778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_get_random(peer->rnonce, WPA_NONCE_LEN)) { 16798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(sm->ctx->ctx, MSG_WARNING, 16808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TDLS: Failed to get random data for responder nonce"); 16818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 16828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 16838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#if 0 16868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* get version info from RSNIE received from Peer */ 16878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct rsn_ie_hdr *) kde.rsn_ie; 16888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_ver = WPA_GET_LE16(hdr->version); 16898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* use min(peer's version, out version) */ 16918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rsn_ver > RSN_VERSION) 16928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_ver = RSN_VERSION; 16938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct rsn_ie_hdr *) peer->rsnie_p; 16958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->elem_id = WLAN_EID_RSN; 16978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(hdr->version, rsn_ver); 16988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (hdr + 1); 16998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED); 17018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 17028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Include only the selected cipher in pairwise cipher suite */ 17038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, 1); 17048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 17058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (cipher == WPA_CIPHER_CCMP) 17068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP); 17078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 17088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, 1); 17108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 17118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_TPK_HANDSHAKE); 17128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 17138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_capab = WPA_CAPABILITY_PEERKEY_ENABLED; 17158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_capab |= RSN_NUM_REPLAY_COUNTERS_16 << 2; 17168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, rsn_capab); 17178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 17188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->len = (pos - peer->rsnie_p) - 2; 17208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p_len = pos - peer->rsnie_p; 17218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif 17228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* temp fix: validation of RSNIE later */ 17248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->rsnie_p, peer->rsnie_i, peer->rsnie_i_len); 17258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p_len = peer->rsnie_i_len; 17268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE for TPK handshake", 17288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p, peer->rsnie_p_len); 17298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->lifetime = lifetime; 17318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_generate_tpk(peer, sm->own_addr, sm->bssid); 17338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_rsn_check: 17351f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* add the peer to the driver as a "setup in progress" peer */ 173633e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt wpa_sm_tdls_peer_addset(sm, peer->addr, 1, 0, NULL, 0, NULL, NULL, 0, 1737f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt NULL, 0); 17381f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 17398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending TDLS Setup Response / TPK M2"); 17401f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wpa_tdls_send_tpk_m2(sm, src_addr, dtoken, lnkid, peer) < 0) { 17411f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_disable_link(sm, peer->addr); 17421f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt goto error; 17431f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 17448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 17468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidterror: 17488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_send_error(sm, src_addr, WLAN_TDLS_SETUP_RESPONSE, dtoken, 17498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status); 17508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 17518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 17528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_enable_link(struct wpa_sm *sm, struct wpa_tdls_peer *peer) 17558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 17568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->tpk_success = 1; 17578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_timeout, sm, peer); 17588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm)) { 17598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime = peer->lifetime; 17608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 17618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Start the initiator process a bit earlier to avoid race 17628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * condition with the responder sending teardown request. 17638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 17648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (lifetime > 3 && peer->initiator) 17658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime -= 3; 17668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_register_timeout(lifetime, 0, wpa_tdls_tpk_timeout, 17678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm, peer); 17688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 17698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_NO_TPK_EXPIRATION) { 17708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - disable TPK " 17718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "expiration"); 17728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_timeout, sm, peer); 17738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 17748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 17758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 17761f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1777f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt /* add supported rates, capabilities, and qos_info to the TDLS peer */ 17781f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_sm_tdls_peer_addset(sm, peer->addr, 0, peer->capability, 1779f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->supp_rates, peer->supp_rates_len, 178033e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt peer->ht_capabilities, peer->vht_capabilities, 178133e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt peer->qos_info, peer->ext_capab, 178233e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt peer->ext_capab_len); 17831f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 17848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_ENABLE_LINK, peer->addr); 17858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 17868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_process_tpk_m2(struct wpa_sm *sm, const u8 *src_addr, 17898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *buf, size_t len) 17908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 17918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 17928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse kde; 17938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ie_data ie; 17948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int cipher; 17958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 17968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie *timeoutie; 17978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid; 17988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime; 17998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dtoken; 18008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ielen; 18018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status; 18028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 18038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Received TDLS Setup Response / TPK M2 " 18058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(Peer " MACSTR ")", MAC2STR(src_addr)); 18068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 18078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, src_addr, ETH_ALEN) == 0) 18088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 18098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL) { 18118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No matching peer found for " 18128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M2: " MACSTR, MAC2STR(src_addr)); 18138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 18148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18150ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (!peer->initiator) { 18160ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt /* 18170ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * This may happen if both devices try to initiate TDLS at the 18180ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * same time and we accept the TPK M1 from the peer in 18190ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * wpa_tdls_process_tpk_m1() and clear our previous state. 18200ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt */ 18210ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_printf(MSG_INFO, "TDLS: We were not the initiator, so " 18220ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "ignore TPK M2 from " MACSTR, MAC2STR(src_addr)); 18230ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt return -1; 18240ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } 18258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_retry_timeout_cancel(sm, peer, WLAN_TDLS_SETUP_REQUEST); 18268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 3 + 2 + 1) 18288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 18298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = buf; 18308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 1 /* pkt_type */ + 1 /* Category */ + 1 /* Action */; 18318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WPA_GET_LE16(pos); 18328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 /* status code */; 18338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status != WLAN_STATUS_SUCCESS) { 18358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Status code in TPK M2: %u", 18368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status); 18371f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_external_setup) 18381f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr); 18398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 18408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_UNSPECIFIED_FAILURE; 18438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: need to verify dialog token matches here or in kernel */ 18458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dtoken = *pos++; /* dialog token */ 18468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Dialog Token in TPK M2 %d", dtoken); 18488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 3 + 2 + 1 + 2) 18508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 18511f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 18521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* capability information */ 18531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt peer->capability = WPA_GET_LE16(pos); 18541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt pos += 2; 18558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = len - (pos - buf); /* start of IE in buf */ 18578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_parse_ies(pos, ielen, &kde) < 0) { 18588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to parse IEs in TPK M2"); 18598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 18608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 18638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_DECLINE_RESP) { 18648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - decline response"); 18658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_REQUEST_DECLINED; 18668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 18678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 18698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.lnkid == NULL || kde.lnkid_len < 3 * ETH_ALEN) { 18718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No valid Link Identifier IE in " 18728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M2"); 18738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 18748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Link ID Received from TPK M2", 18768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.lnkid, kde.lnkid_len); 18778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid = (struct wpa_tdls_lnkid *) kde.lnkid; 18788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(sm->bssid, lnkid->bssid, ETH_ALEN) != 0) { 18808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: TPK M2 from different BSS"); 18818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_NOT_IN_SAME_BSS; 18828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 18838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18851f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (copy_supp_rates(&kde, peer) < 0) 18861f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt goto error; 18871f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1888f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (copy_peer_ht_capab(&kde, peer) < 0) 1889f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt goto error; 1890f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 189133e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt if (copy_peer_vht_capab(&kde, peer) < 0) 189233e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt goto error; 189333e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 1894f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (copy_peer_ext_capab(&kde, peer) < 0) 1895f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt goto error; 1896f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1897f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->qos_info = kde.qosinfo; 1898f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 18998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) { 19008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p_len = 0; 19018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->cipher = WPA_CIPHER_NONE; 19028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_rsn; 19038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.ftie == NULL || kde.ftie_len < sizeof(*ftie) || 19068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.rsn_ie == NULL) { 19078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No FTIE or RSN IE in TPK M2"); 19088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_PARAMETERS; 19098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE Received from TPK M2", 19128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.rsn_ie, kde.rsn_ie_len); 19138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 19158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * FIX: bitwise comparison of RSN IE is not the correct way of 19168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * validation this. It can be different, but certain fields must 19178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * match. Since we list only a single pairwise cipher in TPK M1, the 19188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * memcmp is likely to work in most cases, though. 19198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 19208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.rsn_ie_len != peer->rsnie_i_len || 19218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(peer->rsnie_i, kde.rsn_ie, peer->rsnie_i_len) != 0) { 19228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: RSN IE in TPK M2 does " 19238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with RSN IE used in TPK M1"); 19248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE Sent in TPK M1", 19258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i, peer->rsnie_i_len); 19268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE Received from TPK M2", 19278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.rsn_ie, kde.rsn_ie_len); 19288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSNIE; 19298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_parse_wpa_ie_rsn(kde.rsn_ie, kde.rsn_ie_len, &ie) < 0) { 19338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to parse RSN IE in TPK M2"); 19348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSNIE; 19358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = ie.pairwise_cipher; 19398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (cipher == WPA_CIPHER_CCMP) { 19408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Using CCMP for direct link"); 19418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = WPA_CIPHER_CCMP; 19428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 19438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No acceptable cipher in TPK M2"); 19448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; 19458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE Received from TPK M2", 19498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.ftie, sizeof(*ftie)); 19508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) kde.ftie; 19518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!os_memcmp(peer->inonce, ftie->Snonce, WPA_NONCE_LEN) == 0) { 19538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: FTIE SNonce in TPK M2 does " 19548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with FTIE SNonce used in TPK M1"); 19558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Silently discard the frame */ 19568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 19578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Responder Nonce and RSN IE */ 19608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->rnonce, ftie->Anonce, WPA_NONCE_LEN); 19618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->rsnie_p, kde.rsn_ie, kde.rsn_ie_len); 19628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p_len = kde.rsn_ie_len; 19638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->cipher = cipher; 19648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Lifetime */ 19668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.key_lifetime == NULL) { 19678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No Key Lifetime IE in TPK M2"); 19688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_UNACCEPTABLE_LIFETIME; 19698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt timeoutie = (struct wpa_tdls_timeoutie *) kde.key_lifetime; 19728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime = WPA_GET_LE32(timeoutie->value); 19738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds in TPK M2", 19748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime); 19758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (lifetime != peer->lifetime) { 19768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Unexpected TPK lifetime %u in " 19778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M2 (expected %u)", lifetime, peer->lifetime); 19788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_UNACCEPTABLE_LIFETIME; 19798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_generate_tpk(peer, sm->own_addr, sm->bssid); 19838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Process MIC check to see if TPK M2 is right */ 19858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_verify_tdls_mic(2, peer, (u8 *) lnkid, 19868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) timeoutie, ftie) < 0) { 19878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Discard the frame */ 19888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_del_key(sm, peer); 19898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 19901f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_external_setup) 19911f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr); 19928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 19938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_set_key(sm, peer); 19968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_rsn: 19988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dtoken = dtoken; 19998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending TDLS Setup Confirm / " 20018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK Handshake Message 3"); 20028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_send_tpk_m3(sm, src_addr, dtoken, lnkid, peer); 20038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_enable_link(sm, peer); 20058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 20078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidterror: 20098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_send_error(sm, src_addr, WLAN_TDLS_SETUP_CONFIRM, dtoken, 20108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status); 20111f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_external_setup) 20121f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr); 20138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 20148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 20158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_process_tpk_m3(struct wpa_sm *sm, const u8 *src_addr, 20188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *buf, size_t len) 20198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 20208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 20218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse kde; 20228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 20238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie *timeoutie; 20248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid; 20258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ielen; 20268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status; 20278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 20288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime; 20298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Received TDLS Setup Confirm / TPK M3 " 20318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(Peer " MACSTR ")", MAC2STR(src_addr)); 20328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 20338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, src_addr, ETH_ALEN) == 0) 20348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 20358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 20368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL) { 20378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No matching peer found for " 20388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M3: " MACSTR, MAC2STR(src_addr)); 20398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 20408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 20418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_retry_timeout_cancel(sm, peer, WLAN_TDLS_SETUP_RESPONSE); 20428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 3 + 3) 20448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 20458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = buf; 20468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 1 /* pkt_type */ + 1 /* Category */ + 1 /* Action */; 20478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WPA_GET_LE16(pos); 20498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status != 0) { 20518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Status code in TPK M3: %u", 20528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status); 20531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_external_setup) 20541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr); 20558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 20568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 20578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 /* status code */ + 1 /* dialog token */; 20588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = len - (pos - buf); /* start of IE in buf */ 20608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_parse_ies((const u8 *) pos, ielen, &kde) < 0) { 20618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to parse KDEs in TPK M3"); 20628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 20638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 20648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.lnkid == NULL || kde.lnkid_len < 3 * ETH_ALEN) { 20668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No Link Identifier IE in TPK M3"); 20678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 20688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 20698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Link ID Received from TPK M3", 20708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) kde.lnkid, kde.lnkid_len); 20718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid = (struct wpa_tdls_lnkid *) kde.lnkid; 20728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(sm->bssid, lnkid->bssid, ETH_ALEN) != 0) { 20748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: TPK M3 from diff BSS"); 20758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 20768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 20778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) 20798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_rsn; 20808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.ftie == NULL || kde.ftie_len < sizeof(*ftie)) { 20828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No FTIE in TPK M3"); 20838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 20848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 20858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE Received from TPK M3", 20868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.ftie, sizeof(*ftie)); 20878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) kde.ftie; 20888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.rsn_ie == NULL) { 20908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No RSN IE in TPK M3"); 20918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 20928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 20938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE Received from TPK M3", 20948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.rsn_ie, kde.rsn_ie_len); 20958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.rsn_ie_len != peer->rsnie_p_len || 20968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(kde.rsn_ie, peer->rsnie_p, peer->rsnie_p_len) != 0) { 20978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: RSN IE in TPK M3 does not match " 20988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "with the one sent in TPK M2"); 20998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!os_memcmp(peer->rnonce, ftie->Anonce, WPA_NONCE_LEN) == 0) { 21038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: FTIE ANonce in TPK M3 does " 21048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with FTIE ANonce used in TPK M2"); 21058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!os_memcmp(peer->inonce, ftie->Snonce, WPA_NONCE_LEN) == 0) { 21098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: FTIE SNonce in TPK M3 does not " 21108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "match with FTIE SNonce used in TPK M1"); 21118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.key_lifetime == NULL) { 21158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No Key Lifetime IE in TPK M3"); 21168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt timeoutie = (struct wpa_tdls_timeoutie *) kde.key_lifetime; 21198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Timeout IE Received from TPK M3", 21208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) timeoutie, sizeof(*timeoutie)); 21218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime = WPA_GET_LE32(timeoutie->value); 21228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds in TPK M3", 21238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime); 21248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (lifetime != peer->lifetime) { 21258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Unexpected TPK lifetime %u in " 21268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M3 (expected %u)", lifetime, peer->lifetime); 21271f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_external_setup) 21281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, src_addr); 21298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_verify_tdls_mic(3, peer, (u8 *) lnkid, 21338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) timeoutie, ftie) < 0) { 21348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_del_key(sm, peer); 21358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 21368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_set_key(sm, peer) < 0) 21408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_rsn: 21438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_enable_link(sm, peer); 21448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 21468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 21478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * wpa_add_tdls_timeoutie(u8 *pos, u8 *ie, size_t ie_len, u32 tsecs) 21508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 21518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie *lifetime = (struct wpa_tdls_timeoutie *) ie; 21528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(lifetime, 0, ie_len); 21548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime->ie_type = WLAN_EID_TIMEOUT_INTERVAL; 21558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime->ie_len = sizeof(struct wpa_tdls_timeoutie) - 2; 21568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime->interval_type = WLAN_TIMEOUT_KEY_LIFETIME; 21578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE32(lifetime->value, tsecs); 21588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, ie, ie_len); 21598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos + ie_len; 21608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 21618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 21648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_start - Initiate TDLS handshake (send TPK Handshake Message 1) 21658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @sm: Pointer to WPA state machine data from wpa_sm_init() 21668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @peer: MAC address of the peer STA 21678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: 0 on success, or -1 on failure 21688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 21698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Send TPK Handshake Message 1 info to driver to start TDLS 21708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * handshake with the peer. 21718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 21728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_tdls_start(struct wpa_sm *sm, const u8 *addr) 21738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 21748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 21758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tdls_prohibited = sm->tdls_prohibited; 21768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21771f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 21788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 21818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((tdls_testing & TDLS_TESTING_IGNORE_AP_PROHIBIT) && 21828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tdls_prohibited) { 21838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - ignore AP prohibition " 21848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "on TDLS"); 21858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tdls_prohibited = 0; 21868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 21888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_prohibited) { 21908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS is prohibited in this BSS - " 21918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "reject request to start setup"); 21928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21954b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt peer = wpa_tdls_add_peer(sm, addr, NULL); 21964b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (peer == NULL) 21974b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt return -1; 21988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->initiator = 1; 22008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22011f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* add the peer to the driver as a "setup in progress" peer */ 220233e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt wpa_sm_tdls_peer_addset(sm, peer->addr, 1, 0, NULL, 0, NULL, NULL, 0, 2203f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt NULL, 0); 22041f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 22051f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wpa_tdls_send_tpk_m1(sm, peer) < 0) { 22061f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_disable_link(sm, peer->addr); 22071f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 22081f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 22091f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 22101f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return 0; 22118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 22128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22144b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidtvoid wpa_tdls_remove(struct wpa_sm *sm, const u8 *addr) 22158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 22168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 22178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22181f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 22194b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt return; 22208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 22228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 22238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 22248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 22258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL || !peer->tpk_success) 22274b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt return; 22288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_external_setup) { 22301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* 22311f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * Disable previous link to allow renegotiation to be completed 22321f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * on AP path. 22331f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt */ 22341f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, peer->addr); 22351f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 22368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 22378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 22408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_supplicant_rx_tdls - Receive TDLS data frame 22418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 22428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This function is called to receive TDLS (ethertype = 0x890d) data frames. 22438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 22448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_supplicant_rx_tdls(void *ctx, const u8 *src_addr, 22458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *buf, size_t len) 22468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 22478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_sm *sm = ctx; 22488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_frame *tf; 22498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Received Data frame encapsulation", 22518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf, len); 22528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) { 22541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Discard message - TDLS disabled " 22551f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt "or unsupported by driver"); 22568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 22578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 22588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(src_addr, sm->own_addr, ETH_ALEN) == 0) { 22608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Discard copy of own message"); 22618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 22628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 22638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < sizeof(*tf)) { 22658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Drop too short frame"); 22668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 22678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 22688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Check to make sure its a valid encapsulated TDLS frame */ 22708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tf = (struct wpa_tdls_frame *) buf; 22718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tf->payloadtype != 2 /* TDLS_RFTYPE */ || 22728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tf->category != WLAN_ACTION_TDLS) { 22738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Invalid frame - payloadtype=%u " 22748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "category=%u action=%u", 22758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tf->payloadtype, tf->category, tf->action); 22768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 22778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 22788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (tf->action) { 22808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WLAN_TDLS_SETUP_REQUEST: 22818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_process_tpk_m1(sm, src_addr, buf, len); 22828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 22838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WLAN_TDLS_SETUP_RESPONSE: 22848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_process_tpk_m2(sm, src_addr, buf, len); 22858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 22868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WLAN_TDLS_SETUP_CONFIRM: 22878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_process_tpk_m3(sm, src_addr, buf, len); 22888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 22898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WLAN_TDLS_TEARDOWN: 22908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_recv_teardown(sm, src_addr, buf, len); 22918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 22921f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt case WLAN_TDLS_DISCOVERY_REQUEST: 22931f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_process_discovery_request(sm, src_addr, buf, len); 22941f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt break; 22958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 22968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Kernel code will process remaining frames */ 22978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Ignore TDLS frame action code %u", 22988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tf->action); 22998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 23008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 23018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 23028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 23058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_init - Initialize driver interface parameters for TDLS 23068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @wpa_s: Pointer to wpa_supplicant data 23078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: 0 on success, -1 on failure 23088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 23098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This function is called to initialize driver interface parameters for TDLS. 23108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_drv_init() must have been called before this function to initialize the 23118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * driver interface. 23128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 23138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_tdls_init(struct wpa_sm *sm) 23148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 23158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) 23168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 23178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 231804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt sm->l2_tdls = l2_packet_init(sm->bridge_ifname ? sm->bridge_ifname : 231904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt sm->ifname, 232004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt sm->own_addr, 23218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ETH_P_80211_ENCAP, wpa_supplicant_rx_tdls, 23228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm, 0); 23238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->l2_tdls == NULL) { 23248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "TDLS: Failed to open l2_packet " 23258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "connection"); 23268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 23278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 23288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* 23301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * Drivers that support TDLS but don't implement the get_capa callback 23311f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * are assumed to perform everything internally 23321f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt */ 23331f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wpa_sm_tdls_get_capa(sm, &sm->tdls_supported, 23341f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt &sm->tdls_external_setup) < 0) { 23351f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt sm->tdls_supported = 1; 23361f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt sm->tdls_external_setup = 0; 23371f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 23381f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 23391f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS operation%s supported by " 23401f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt "driver", sm->tdls_supported ? "" : " not"); 23411f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Driver uses %s link setup", 23421f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt sm->tdls_external_setup ? "external" : "internal"); 23431f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 23448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 23458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 23468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2348f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidtvoid wpa_tdls_teardown_peers(struct wpa_sm *sm) 2349f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt{ 2350f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt struct wpa_tdls_peer *peer; 2351f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2352f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer = sm->tdls; 2353f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2354f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Tear down peers"); 2355f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2356f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt while (peer) { 2357f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Tear down peer " MACSTR, 2358f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt MAC2STR(peer->addr)); 2359f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (sm->tdls_external_setup) 2360f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_tdls_send_teardown(sm, peer->addr, 2361f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt WLAN_REASON_DEAUTH_LEAVING); 2362f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt else 2363f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_TEARDOWN, peer->addr); 2364f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2365f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer = peer->next; 2366f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 2367f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt} 2368f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2369f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 23708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_remove_peers(struct wpa_sm *sm) 23718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 23728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer, *tmp; 23738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer = sm->tdls; 23758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->tdls = NULL; 23768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (peer) { 23788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 23798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tmp = peer->next; 23808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, peer->addr); 23818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Remove peer " MACSTR " (res=%d)", 23828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(peer->addr), res); 23838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 23848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(peer); 23858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer = tmp; 23868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 23878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 23888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 23918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_deinit - Deinitialize driver interface parameters for TDLS 23928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 23938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This function is called to recover driver interface parameters for TDLS 23948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * and frees resources allocated for it. 23958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 23968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_deinit(struct wpa_sm *sm) 23978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 23988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) 23998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 24008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->l2_tdls) 24028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt l2_packet_deinit(sm->l2_tdls); 24038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->l2_tdls = NULL; 24048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_remove_peers(sm); 24068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 24078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_assoc(struct wpa_sm *sm) 24108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 24118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Remove peers on association"); 24128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_remove_peers(sm); 24138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 24148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_disassoc(struct wpa_sm *sm) 24178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 24188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Remove peers on disassociation"); 24198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_remove_peers(sm); 24208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 24218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_prohibited(const u8 *ies, size_t len) 24248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 24258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse elems; 24268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ies == NULL) 24288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 24298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_parse_ies(ies, len, &elems) < 0) 24318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 24328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (elems.ext_capab == NULL || elems.ext_capab_len < 2 + 5) 24348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 24358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* bit 38 - TDLS Prohibited */ 24378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return !!(elems.ext_capab[2 + 4] & 0x40); 24388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 24398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_ap_ies(struct wpa_sm *sm, const u8 *ies, size_t len) 24428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 24438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->tdls_prohibited = wpa_tdls_prohibited(ies, len); 24448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS is %s in the target BSS", 24458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->tdls_prohibited ? "prohibited" : "allowed"); 24468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 24478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_assoc_resp_ies(struct wpa_sm *sm, const u8 *ies, size_t len) 24508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 24518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!sm->tdls_prohibited && wpa_tdls_prohibited(ies, len)) { 24528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS prohibited based on " 24538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(Re)Association Response IEs"); 24548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->tdls_prohibited = 1; 24558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 24568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 24578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_enable(struct wpa_sm *sm, int enabled) 24608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 24618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: %s", enabled ? "enabled" : "disabled"); 24628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->tdls_disabled = !enabled; 24638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 24641f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 24651f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 24661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtint wpa_tdls_is_external_setup(struct wpa_sm *sm) 24671f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 24681f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return sm->tdls_external_setup; 24691f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 2470