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) 3621de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt#define TDLS_TESTING_WRONG_MIC BIT(11) 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtunsigned int tdls_testing = 0; 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TPK_LIFETIME 43200 /* 12 hours */ 41f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt#define TPK_M1_RETRY_COUNT 3 42f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt#define TPK_M1_TIMEOUT 5000 /* in milliseconds */ 43f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt#define TPK_M2_RETRY_COUNT 10 44f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt#define TPK_M2_TIMEOUT 500 /* in milliseconds */ 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_MIC_LEN 16 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_TIMEOUT_LEN 4 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_tdls_ftie { 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_type; /* FTIE */ 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_len; 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mic_ctrl[2]; 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mic[TDLS_MIC_LEN]; 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 Anonce[WPA_NONCE_LEN]; /* Responder Nonce in TDLS */ 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 Snonce[WPA_NONCE_LEN]; /* Initiator Nonce in TDLS */ 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* followed by optional elements */ 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} STRUCT_PACKED; 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_tdls_timeoutie { 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_type; /* Timeout IE */ 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_len; 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 interval_type; 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 value[TDLS_TIMEOUT_LEN]; 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} STRUCT_PACKED; 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_tdls_lnkid { 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_type; /* Link Identifier IE */ 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ie_len; 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 bssid[ETH_ALEN]; 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 init_sta[ETH_ALEN]; 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 resp_sta[ETH_ALEN]; 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} STRUCT_PACKED; 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* TDLS frame headers as per IEEE Std 802.11z-2010 */ 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_tdls_frame { 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 payloadtype; /* IEEE80211_TDLS_RFTYPE */ 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 category; /* Category */ 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action; /* Action (enum tdls_frame_type) */ 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} STRUCT_PACKED; 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * wpa_add_tdls_timeoutie(u8 *pos, u8 *ie, size_t ie_len, u32 tsecs); 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_tpk_retry_timeout(void *eloop_ctx, void *timeout_ctx); 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_peer_free(struct wpa_sm *sm, struct wpa_tdls_peer *peer); 85d0ef38b52c069e34102b38dafbbc1fe055364ae8Sunil Duttstatic void wpa_tdls_disable_peer_link(struct wpa_sm *sm, 86d0ef38b52c069e34102b38dafbbc1fe055364ae8Sunil Dutt struct wpa_tdls_peer *peer); 87b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidtstatic int wpa_tdls_send_teardown(struct wpa_sm *sm, const u8 *addr, 88b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidt u16 reason_code); 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define TDLS_MAX_IE_LEN 80 921f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt#define IEEE80211_MAX_SUPP_RATES 32 931f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_tdls_peer { 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *next; 968da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt unsigned int reconfig_key:1; 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int initiator; /* whether this end was initiator for TDLS setup */ 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 addr[ETH_ALEN]; /* other end MAC address */ 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 inonce[WPA_NONCE_LEN]; /* Initiator Nonce */ 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rnonce[WPA_NONCE_LEN]; /* Responder Nonce */ 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rsnie_i[TDLS_MAX_IE_LEN]; /* Initiator RSN IE */ 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t rsnie_i_len; 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rsnie_p[TDLS_MAX_IE_LEN]; /* Peer RSN IE */ 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t rsnie_p_len; 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime; 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int cipher; /* Selected cipher (WPA_CIPHER_*) */ 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dtoken; 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct tpk { 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 kck[16]; /* TPK-KCK */ 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 tk[16]; /* TPK-TK; assuming only CCMP will be used */ 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } tpk; 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tpk_set; 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tpk_success; 11573b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt int tpk_in_progress; 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct tpk_timer { 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dest[ETH_ALEN]; 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int count; /* Retry Count */ 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int timer; /* Timeout in milliseconds */ 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action_code; /* TDLS frame type */ 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token; 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status_code; 124df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt u32 peer_capab; 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int buf_len; /* length of TPK message for retransmission */ 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *buf; /* buffer for TPK message */ 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } sm_tmr; 1281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt u16 capability; 1301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1311f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 1321f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt size_t supp_rates_len; 133f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 134f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt struct ieee80211_ht_capabilities *ht_capabilities; 13533e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt struct ieee80211_vht_capabilities *vht_capabilities; 136f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 137f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt u8 qos_info; 138f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 13951b6ea882f234c14cd1fe1332a3840cf61fafccaDmitry Shmidt u16 aid; 14051b6ea882f234c14cd1fe1332a3840cf61fafccaDmitry Shmidt 141f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt u8 *ext_capab; 142f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt size_t ext_capab_len; 143344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 144344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt u8 *supp_channels; 145344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt size_t supp_channels_len; 146344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 147344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt u8 *supp_oper_classes; 148344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt size_t supp_oper_classes_len; 149df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt 150df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt u8 wmm_capable; 1516c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 1526c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt /* channel switch currently enabled */ 1536c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt int chan_switch_enabled; 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_get_privacy(struct wpa_sm *sm) 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Get info needed from supplicant to check if the current BSS supports 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * security. Other than OPEN mode, rest are considered secured 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * WEP/WPA/WPA2 hence TDLS frames are processed for TPK handshake. 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return sm->pairwise_cipher != WPA_CIPHER_NONE; 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * wpa_add_ie(u8 *pos, const u8 *ie, size_t ie_len) 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, ie, ie_len); 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos + ie_len; 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_del_key(struct wpa_sm *sm, struct wpa_tdls_peer *peer) 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_sm_set_key(sm, WPA_ALG_NONE, peer->addr, 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0, 0, NULL, 0, NULL, 0) < 0) { 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: Failed to delete TPK-TK from " 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "the driver"); 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_set_key(struct wpa_sm *sm, struct wpa_tdls_peer *peer) 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 key_len; 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rsc[6]; 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wpa_alg alg; 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(rsc, 0, 6); 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (peer->cipher) { 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPA_CIPHER_CCMP: 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt alg = WPA_ALG_CCMP; 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_len = 16; 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPA_CIPHER_NONE: 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Pairwise Cipher Suite: " 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "NONE - do not use pairwise keys"); 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: Unsupported pairwise cipher %d", 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise_cipher); 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_sm_set_key(sm, alg, peer->addr, -1, 1, 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsc, sizeof(rsc), peer->tpk.tk, key_len) < 0) { 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: Failed to set TPK to the " 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "driver"); 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_send_tpk_msg(struct wpa_sm *sm, const u8 *dst, 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action_code, u8 dialog_token, 223df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt u16 status_code, u32 peer_capab, 2249ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt int initiator, const u8 *buf, size_t len) 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_sm_send_tdls_mgmt(sm, dst, action_code, dialog_token, 2279ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt status_code, peer_capab, initiator, buf, 2289ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt len); 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_tpk_send(struct wpa_sm *sm, const u8 *dest, u8 action_code, 233df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt u8 dialog_token, u16 status_code, u32 peer_capab, 2349ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt int initiator, const u8 *msg, size_t msg_len) 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK send dest=" MACSTR " action_code=%u " 2399ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt "dialog_token=%u status_code=%u peer_capab=%u initiator=%d " 2409ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt "msg_len=%u", 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dest), action_code, dialog_token, status_code, 2429ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt peer_capab, initiator, (unsigned int) msg_len); 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_send_tpk_msg(sm, dest, action_code, dialog_token, 2459ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt status_code, peer_capab, initiator, msg, 2469ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt msg_len)) { 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to send message " 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(action_code=%u)", action_code); 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (action_code == WLAN_TDLS_SETUP_CONFIRM || 2531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt action_code == WLAN_TDLS_TEARDOWN || 2541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt action_code == WLAN_TDLS_DISCOVERY_REQUEST || 2551f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt action_code == WLAN_TDLS_DISCOVERY_RESPONSE) 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; /* No retries */ 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, dest, ETH_ALEN) == 0) 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL) { 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No matching entry found for " 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "retry " MACSTR, MAC2STR(dest)); 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer); 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 271f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt if (action_code == WLAN_TDLS_SETUP_RESPONSE) { 272f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt peer->sm_tmr.count = TPK_M2_RETRY_COUNT; 273f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt peer->sm_tmr.timer = TPK_M2_TIMEOUT; 274f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt } else { 275f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt peer->sm_tmr.count = TPK_M1_RETRY_COUNT; 276f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt peer->sm_tmr.timer = TPK_M1_TIMEOUT; 277f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt } 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Copy message to resend on timeout */ 2808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->sm_tmr.dest, dest, ETH_ALEN); 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.action_code = action_code; 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.dialog_token = dialog_token; 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.status_code = status_code; 284df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt peer->sm_tmr.peer_capab = peer_capab; 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf_len = msg_len; 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(peer->sm_tmr.buf); 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf = os_malloc(msg_len); 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->sm_tmr.buf == NULL) 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->sm_tmr.buf, msg, msg_len); 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Retry timeout registered " 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(action_code=%u)", action_code); 294f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt eloop_register_timeout(peer->sm_tmr.timer / 1000, 295f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt (peer->sm_tmr.timer % 1000) * 1000, 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_retry_timeout, sm, peer); 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3011f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtstatic int wpa_tdls_do_teardown(struct wpa_sm *sm, struct wpa_tdls_peer *peer, 3026a9f522e56dae5b1fff00642e27b82e82772dcf7Sunil Dutt u16 reason_code) 3031f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 3041f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt int ret; 3051f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 3066a9f522e56dae5b1fff00642e27b82e82772dcf7Sunil Dutt ret = wpa_tdls_send_teardown(sm, peer->addr, reason_code); 3076a9f522e56dae5b1fff00642e27b82e82772dcf7Sunil Dutt /* disable the link after teardown was sent */ 308d0ef38b52c069e34102b38dafbbc1fe055364ae8Sunil Dutt wpa_tdls_disable_peer_link(sm, peer); 3091f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 3101f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return ret; 3111f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 3121f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 3131f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_tpk_retry_timeout(void *eloop_ctx, void *timeout_ctx) 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_sm *sm = eloop_ctx; 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer = timeout_ctx; 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->sm_tmr.count) { 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.count--; 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Retrying sending of message " 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(action_code=%u)", 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.action_code); 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->sm_tmr.buf == NULL) { 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No retry buffer available " 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "for action_code=%u", 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.action_code); 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer); 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* resend TPK Handshake Message to Peer */ 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_send_tpk_msg(sm, peer->sm_tmr.dest, 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.action_code, 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.dialog_token, 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.status_code, 341df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt peer->sm_tmr.peer_capab, 3429ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt peer->initiator, 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf, 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf_len)) { 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to retry " 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "transmission"); 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer); 350f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt eloop_register_timeout(peer->sm_tmr.timer / 1000, 351f7e0a9905988e62e4f70fed8b795722abeab719bDmitry Shmidt (peer->sm_tmr.timer % 1000) * 1000, 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_retry_timeout, sm, peer); 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer); 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3561f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending Teardown Request"); 3571f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_do_teardown(sm, peer, 3586a9f522e56dae5b1fff00642e27b82e82772dcf7Sunil Dutt WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED); 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_tpk_retry_timeout_cancel(struct wpa_sm *sm, 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer, 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action_code) 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (action_code == peer->sm_tmr.action_code) { 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Retry timeout cancelled for " 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "action_code=%u", action_code); 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Cancel Timeout registered */ 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer); 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* free all resources meant for retry */ 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(peer->sm_tmr.buf); 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf = NULL; 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.count = 0; 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.timer = 0; 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf_len = 0; 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.action_code = 0xff; 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Error in cancelling retry timeout " 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(Unknown action_code=%u)", action_code); 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_generate_tpk(struct wpa_tdls_peer *peer, 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *own_addr, const u8 *bssid) 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 key_input[SHA256_MAC_LEN]; 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *nonce[2]; 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[2]; 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 data[3 * ETH_ALEN]; 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* IEEE Std 802.11z-2010 8.5.9.1: 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * TPK-Key-Input = SHA-256(min(SNonce, ANonce) || max(SNonce, ANonce)) 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPA_NONCE_LEN; 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPA_NONCE_LEN; 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->inonce, peer->rnonce, WPA_NONCE_LEN) < 0) { 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nonce[0] = peer->inonce; 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nonce[1] = peer->rnonce; 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nonce[0] = peer->rnonce; 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nonce[1] = peer->inonce; 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: min(Nonce)", nonce[0], WPA_NONCE_LEN); 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: max(Nonce)", nonce[1], WPA_NONCE_LEN); 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha256_vector(2, nonce, len, key_input); 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-Key-Input", 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_input, SHA256_MAC_LEN); 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * TPK-Key-Data = KDF-N_KEY(TPK-Key-Input, "TDLS PMK", 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * min(MAC_I, MAC_R) || max(MAC_I, MAC_R) || BSSID || N_KEY) 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * TODO: is N_KEY really included in KDF Context and if so, in which 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * presentation format (little endian 16-bit?) is it used? It gets 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * added by the KDF anyway.. 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(own_addr, peer->addr, ETH_ALEN) < 0) { 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data, own_addr, ETH_ALEN); 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data + ETH_ALEN, peer->addr, ETH_ALEN); 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data, peer->addr, ETH_ALEN); 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data + ETH_ALEN, own_addr, ETH_ALEN); 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data + 2 * ETH_ALEN, bssid, ETH_ALEN); 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: KDF Context", data, sizeof(data)); 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha256_prf(key_input, SHA256_MAC_LEN, "TDLS PMK", data, sizeof(data), 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) &peer->tpk, sizeof(peer->tpk)); 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-KCK", 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->tpk.kck, sizeof(peer->tpk.kck)); 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-TK", 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->tpk.tk, sizeof(peer->tpk.tk)); 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->tpk_set = 1; 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_ftie_mic - Calculate TDLS FTIE MIC 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @kck: TPK-KCK 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @lnkid: Pointer to the beginning of Link Identifier IE 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @rsnie: Pointer to the beginning of RSN IE used for handshake 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @timeoutie: Pointer to the beginning of Timeout IE used for handshake 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @ftie: Pointer to the beginning of FT IE 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @mic: Pointer for writing MIC 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Calculate MIC for TDLS frame. 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_ftie_mic(const u8 *kck, u8 trans_seq, const u8 *lnkid, 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *rsnie, const u8 *timeoutie, 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ftie, u8 *mic) 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *buf, *pos; 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *_ftie; 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpa_tdls_lnkid *_lnkid; 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int len = 2 * ETH_ALEN + 1 + 2 + lnkid[1] + 2 + rsnie[1] + 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2 + timeoutie[1] + 2 + ftie[1]; 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf = os_zalloc(len); 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!buf) { 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: No memory for MIC calculation"); 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = buf; 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _lnkid = (const struct wpa_tdls_lnkid *) lnkid; 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 1) TDLS initiator STA MAC address */ 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, _lnkid->init_sta, ETH_ALEN); 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 2) TDLS responder STA MAC address */ 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, _lnkid->resp_sta, ETH_ALEN); 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3) Transaction Sequence number */ 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = trans_seq; 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4) Link Identifier IE */ 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, lnkid, 2 + lnkid[1]); 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + lnkid[1]; 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 5) RSN IE */ 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, rsnie, 2 + rsnie[1]); 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + rsnie[1]; 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 6) Timeout Interval IE */ 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, timeoutie, 2 + timeoutie[1]); 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + timeoutie[1]; 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 7) FTIE, with the MIC field of the FTIE set to 0 */ 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, ftie, 2 + ftie[1]); 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie = (struct wpa_tdls_ftie *) pos; 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(_ftie->mic, 0, TDLS_MIC_LEN); 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + ftie[1]; 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Data for FTIE MIC", buf, pos - buf); 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "TDLS: KCK", kck, 16); 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = omac1_aes_128(kck, buf, pos - buf, mic); 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(buf); 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE MIC", mic, 16); 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_key_mic_teardown - Calculate TDLS FTIE MIC for Teardown frame 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @kck: TPK-KCK 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @trans_seq: Transaction Sequence Number (4 - Teardown) 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @rcode: Reason code for Teardown 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @dtoken: Dialog Token used for that particular link 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @lnkid: Pointer to the beginning of Link Identifier IE 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @ftie: Pointer to the beginning of FT IE 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @mic: Pointer for writing MIC 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Calculate MIC for TDLS frame. 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_key_mic_teardown(const u8 *kck, u8 trans_seq, u16 rcode, 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dtoken, const u8 *lnkid, 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ftie, u8 *mic) 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *buf, *pos; 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *_ftie; 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int len; 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (lnkid == NULL) 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = 2 + lnkid[1] + sizeof(rcode) + sizeof(dtoken) + 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(trans_seq) + 2 + ftie[1]; 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf = os_zalloc(len); 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!buf) { 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: No memory for MIC calculation"); 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = buf; 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 1) Link Identifier IE */ 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, lnkid, 2 + lnkid[1]); 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + lnkid[1]; 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 2) Reason Code */ 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, rcode); 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(rcode); 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3) Dialog token */ 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = dtoken; 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4) Transaction Sequence number */ 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = trans_seq; 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 7) FTIE, with the MIC field of the FTIE set to 0 */ 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, ftie, 2 + ftie[1]); 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie = (struct wpa_tdls_ftie *) pos; 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(_ftie->mic, 0, TDLS_MIC_LEN); 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 + ftie[1]; 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Data for FTIE MIC", buf, pos - buf); 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "TDLS: KCK", kck, 16); 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = omac1_aes_128(kck, buf, pos - buf, mic); 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(buf); 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE MIC", mic, 16); 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_supplicant_verify_tdls_mic(u8 trans_seq, 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer, 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *lnkid, const u8 *timeoutie, 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 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_ftie_mic(peer->tpk.kck, trans_seq, lnkid, 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p, timeoutie, (u8 *) ftie, 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mic); 574c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(mic, ftie->mic, 16) != 0) { 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Invalid MIC in FTIE - " 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "dropping packet"); 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Received MIC", 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->mic, 16); 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Calculated MIC", 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mic, 16); 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "TDLS: Could not verify TDLS MIC, " 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK not set - dropping packet"); 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_supplicant_verify_tdls_mic_teardown( 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 trans_seq, u16 rcode, u8 dtoken, struct wpa_tdls_peer *peer, 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *lnkid, const struct wpa_tdls_ftie *ftie) 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mic[16]; 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->tpk_set) { 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_key_mic_teardown(peer->tpk.kck, trans_seq, rcode, 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dtoken, lnkid, (u8 *) ftie, mic); 601c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(mic, ftie->mic, 16) != 0) { 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Invalid MIC in Teardown - " 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "dropping packet"); 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Could not verify TDLS Teardown " 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "MIC, TPK not set - dropping packet"); 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_tpk_timeout(void *eloop_ctx, void *timeout_ctx) 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_sm *sm = eloop_ctx; 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer = timeout_ctx; 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * On TPK lifetime expiration, we have an option of either tearing down 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * the direct link or trying to re-initiate it. The selection of what 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * to do is not strictly speaking controlled by our role in the expired 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * link, but for now, use that to select whether to renew or tear down 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * the link. 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->initiator) { 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime expired for " MACSTR 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " - try to renew", MAC2STR(peer->addr)); 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_start(sm, peer->addr); 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime expired for " MACSTR 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " - tear down", MAC2STR(peer->addr)); 6351f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_do_teardown(sm, peer, 6366a9f522e56dae5b1fff00642e27b82e82772dcf7Sunil Dutt WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED); 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 641d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidtstatic void wpa_tdls_peer_remove_from_list(struct wpa_sm *sm, 642d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt struct wpa_tdls_peer *peer) 643d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt{ 644d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt struct wpa_tdls_peer *cur, *prev; 645d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 646d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt cur = sm->tdls; 647d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt prev = NULL; 648d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt while (cur && cur != peer) { 649d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt prev = cur; 650d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt cur = cur->next; 651d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt } 652d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 653d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt if (cur != peer) { 654d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt wpa_printf(MSG_ERROR, "TDLS: Could not find peer " MACSTR 655d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt " to remove it from the list", 656d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt MAC2STR(peer->addr)); 657d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt return; 658d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt } 659d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 660d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt if (prev) 661d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt prev->next = peer->next; 662d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt else 663d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt sm->tdls = peer->next; 664d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt} 665d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 666d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 667d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidtstatic void wpa_tdls_peer_clear(struct wpa_sm *sm, struct wpa_tdls_peer *peer) 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Clear state for peer " MACSTR, 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(peer->addr)); 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_timeout, sm, peer); 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_retry_timeout, sm, peer); 6738da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt peer->reconfig_key = 0; 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->initiator = 0; 67573b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt peer->tpk_in_progress = 0; 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(peer->sm_tmr.buf); 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->sm_tmr.buf = NULL; 678f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_free(peer->ht_capabilities); 679f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->ht_capabilities = NULL; 68033e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt os_free(peer->vht_capabilities); 68133e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt peer->vht_capabilities = NULL; 682f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_free(peer->ext_capab); 683f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->ext_capab = NULL; 684344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt os_free(peer->supp_channels); 685344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_channels = NULL; 686344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt os_free(peer->supp_oper_classes); 687344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_oper_classes = NULL; 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i_len = peer->rsnie_p_len = 0; 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->cipher = 0; 690df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt peer->qos_info = 0; 691df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt peer->wmm_capable = 0; 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->tpk_set = peer->tpk_success = 0; 6936c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt peer->chan_switch_enabled = 0; 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&peer->tpk, 0, sizeof(peer->tpk)); 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(peer->inonce, 0, WPA_NONCE_LEN); 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(peer->rnonce, 0, WPA_NONCE_LEN); 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 700d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidtstatic void wpa_tdls_peer_free(struct wpa_sm *sm, struct wpa_tdls_peer *peer) 701d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt{ 702d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt wpa_tdls_peer_clear(sm, peer); 703d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt wpa_tdls_peer_remove_from_list(sm, peer); 704d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt os_free(peer); 705d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt} 706d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 707d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_linkid(struct wpa_sm *sm, struct wpa_tdls_peer *peer, 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid) 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid->ie_type = WLAN_EID_LINK_ID; 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid->ie_len = 3 * ETH_ALEN; 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(lnkid->bssid, sm->bssid, ETH_ALEN); 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->initiator) { 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(lnkid->init_sta, sm->own_addr, ETH_ALEN); 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(lnkid->resp_sta, peer->addr, ETH_ALEN); 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(lnkid->init_sta, peer->addr, ETH_ALEN); 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(lnkid->resp_sta, sm->own_addr, ETH_ALEN); 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 724b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidtstatic int wpa_tdls_send_teardown(struct wpa_sm *sm, const u8 *addr, 725b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidt u16 reason_code) 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid lnkid; 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token; 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *rbuf, *pos; 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ielen; 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7341f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Find the node and free from the list */ 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL) { 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No matching entry found for " 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Teardown " MACSTR, MAC2STR(addr)); 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7496c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt /* Cancel active channel switch before teardown */ 7506c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (peer->chan_switch_enabled) { 7516c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: First returning link with " MACSTR 7526c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt " to base channel", MAC2STR(addr)); 7536c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_sm_tdls_disable_channel_switch(sm, peer->addr); 7546c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt } 7556c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dialog_token = peer->dtoken; 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS Teardown for " MACSTR, 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(addr)); 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = 0; 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm) && peer->tpk_set && peer->tpk_success) { 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* To add FTIE for Teardown request and compute MIC */ 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen += sizeof(*ftie); 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen += 170; 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf = os_zalloc(ielen + 1); 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rbuf == NULL) 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = rbuf; 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 77651b6ea882f234c14cd1fe1332a3840cf61fafccaDmitry Shmidt if (!wpa_tdls_get_privacy(sm) || !peer->tpk_set || !peer->tpk_success) 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_ies; 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) pos; 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_type = WLAN_EID_FAST_BSS_TRANSITION; 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Using the recent nonce which should be for CONFIRM frame */ 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Anonce, peer->rnonce, WPA_NONCE_LEN); 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Snonce, peer->inonce, WPA_NONCE_LEN); 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len = sizeof(struct wpa_tdls_ftie) - 2; 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (ftie + 1); 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) { 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - add extra subelem to " 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "FTIE"); 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len += 170; 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 255; /* FTIE subelem */ 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 168; /* FTIE subelem length */ 7931f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt pos += 168; 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE for TDLS Teardown handshake", 7971f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt (u8 *) ftie, pos - (u8 *) ftie); 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* compute MIC before sending */ 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_linkid(sm, peer, &lnkid); 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_key_mic_teardown(peer->tpk.kck, 4, reason_code, 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dialog_token, (u8 *) &lnkid, (u8 *) ftie, 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->mic); 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_ies: 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: register for a Timeout handler, if Teardown is not received at 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * the other end, then try again another time */ 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* request driver to send Teardown using this FTIE */ 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_send(sm, addr, WLAN_TDLS_TEARDOWN, 0, 8119ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt reason_code, 0, peer->initiator, rbuf, pos - rbuf); 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(rbuf); 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8181f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtint wpa_tdls_teardown_link(struct wpa_sm *sm, const u8 *addr, u16 reason_code) 8191f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 8201f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer; 8211f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 8221f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 8231f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 8241f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 8251f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 8261f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 8271f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt break; 8281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 8291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 8301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer == NULL) { 8311f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Could not find peer " MACSTR 8321f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt " for link Teardown", MAC2STR(addr)); 8331f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 8341f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 8351f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 8361f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (!peer->tpk_success) { 8371f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Peer " MACSTR 8381f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt " not connected - cannot Teardown link", MAC2STR(addr)); 8391f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 8401f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 8411f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 8426a9f522e56dae5b1fff00642e27b82e82772dcf7Sunil Dutt return wpa_tdls_do_teardown(sm, peer, reason_code); 8431f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 8441f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 8451f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 84638ffd8879e7990491033bf20568212e8c3472b48Sunil Duttstatic void wpa_tdls_disable_peer_link(struct wpa_sm *sm, 84738ffd8879e7990491033bf20568212e8c3472b48Sunil Dutt struct wpa_tdls_peer *peer) 84838ffd8879e7990491033bf20568212e8c3472b48Sunil Dutt{ 84938ffd8879e7990491033bf20568212e8c3472b48Sunil Dutt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, peer->addr); 85038ffd8879e7990491033bf20568212e8c3472b48Sunil Dutt wpa_tdls_peer_free(sm, peer); 85138ffd8879e7990491033bf20568212e8c3472b48Sunil Dutt} 85238ffd8879e7990491033bf20568212e8c3472b48Sunil Dutt 85338ffd8879e7990491033bf20568212e8c3472b48Sunil Dutt 85443cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidtvoid wpa_tdls_disable_unreachable_link(struct wpa_sm *sm, const u8 *addr) 8551f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 8561f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer; 8571f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 8581f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 8591f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 8601f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt break; 8611f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 8621f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 86343cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt if (!peer || !peer->tpk_success) { 86443cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Peer " MACSTR 86543cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt " not connected - cannot teardown unreachable link", 86643cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt MAC2STR(addr)); 86743cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt return; 86843cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt } 86943cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt 87043cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt if (wpa_tdls_is_external_setup(sm)) { 87143cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt /* 8726c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt * Get us on the base channel, disable the link, send a 8736c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt * teardown packet through the AP, and then reset link data. 87443cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt */ 8756c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (peer->chan_switch_enabled) 8766c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_sm_tdls_disable_channel_switch(sm, peer->addr); 87743cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, addr); 87843cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt wpa_tdls_send_teardown(sm, addr, 87943cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt WLAN_REASON_TDLS_TEARDOWN_UNREACHABLE); 88043cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt wpa_tdls_peer_free(sm, peer); 88143cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt } else { 88238ffd8879e7990491033bf20568212e8c3472b48Sunil Dutt wpa_tdls_disable_peer_link(sm, peer); 88343cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt } 8841f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 8851f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 8861f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 887e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidtconst char * wpa_tdls_get_link_status(struct wpa_sm *sm, const u8 *addr) 888e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt{ 889e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt struct wpa_tdls_peer *peer; 890e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt 891e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 892e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt return "disabled"; 893e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt 894e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 895e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 896e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt break; 897e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt } 898e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt 899e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt if (peer == NULL) 900e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt return "peer does not exist"; 901e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt 902e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt if (!peer->tpk_success) 903e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt return "peer not connected"; 904e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt 905e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt return "connected"; 906e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt} 907e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt 908e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_recv_teardown(struct wpa_sm *sm, const u8 *src_addr, 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *buf, size_t len) 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer = NULL; 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid; 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse kde; 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 reason_code; 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ielen; 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Find the node and free from the list */ 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, src_addr, ETH_ALEN) == 0) 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL) { 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No matching entry found for " 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Teardown " MACSTR, MAC2STR(src_addr)); 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = buf; 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 1 /* pkt_type */ + 1 /* Category */ + 1 /* Action */; 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt reason_code = WPA_GET_LE16(pos); 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS Teardown Request from " MACSTR 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " (reason code %u)", MAC2STR(src_addr), reason_code); 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = len - (pos - buf); /* start of IE in buf */ 9427f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt 9437f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt /* 9447f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt * Don't reject the message if failing to parse IEs. The IEs we need are 9457f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt * explicitly checked below. Some APs may add arbitrary padding to the 9467f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt * end of short TDLS frames and that would look like invalid IEs. 9477f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt */ 9487f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt if (wpa_supplicant_parse_ies((const u8 *) pos, ielen, &kde) < 0) 9497f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt wpa_printf(MSG_DEBUG, 9507f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt "TDLS: Failed to parse IEs in Teardown - ignore as an interop workaround"); 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.lnkid == NULL || kde.lnkid_len < 3 * ETH_ALEN) { 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No Link Identifier IE in TDLS " 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Teardown"); 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid = (struct wpa_tdls_lnkid *) kde.lnkid; 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm) || !peer->tpk_set || !peer->tpk_success) 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_ftie; 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.ftie == NULL || kde.ftie_len < sizeof(*ftie)) { 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No FTIE in TDLS Teardown"); 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) kde.ftie; 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Process MIC check to see if TDLS Teardown is right */ 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_verify_tdls_mic_teardown(4, reason_code, 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dtoken, peer, 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) lnkid, ftie) < 0) { 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: MIC failure for TDLS " 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Teardown Request from " MACSTR, MAC2STR(src_addr)); 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_ftie: 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Request the driver to disable the direct link and clear associated 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * keys. 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 98338ffd8879e7990491033bf20568212e8c3472b48Sunil Dutt wpa_tdls_disable_peer_link(sm, peer); 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_send_error - To send suitable TDLS status response with 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * appropriate status code mentioning reason for error/failure. 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @dst - MAC addr of Peer station 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @tdls_action - TDLS frame type for which error code is sent 9939ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt * @initiator - was this end the initiator of the connection 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @status - status code mentioning reason 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_send_error(struct wpa_sm *sm, const u8 *dst, 9989ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt u8 tdls_action, u8 dialog_token, int initiator, 9999ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt u16 status) 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending error to " MACSTR 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " (action=%u status=%u)", 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dst), tdls_action, status); 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_tdls_tpk_send(sm, dst, tdls_action, dialog_token, status, 10059ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt 0, initiator, NULL, 0); 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10091f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtstatic struct wpa_tdls_peer * 10104b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidtwpa_tdls_add_peer(struct wpa_sm *sm, const u8 *addr, int *existing) 10111f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 10121f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer; 10131f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 10144b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (existing) 10154b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt *existing = 0; 10164b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 10174b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) { 10184b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (existing) 10194b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt *existing = 1; 10204b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt return peer; /* re-use existing entry */ 10214b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt } 10224b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt } 10234b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt 10241f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Creating peer entry for " MACSTR, 10251f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt MAC2STR(addr)); 10261f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 10271f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt peer = os_zalloc(sizeof(*peer)); 10281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer == NULL) 10291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return NULL; 10301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 10311f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt os_memcpy(peer->addr, addr, ETH_ALEN); 10321f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt peer->next = sm->tdls; 10331f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt sm->tdls = peer; 10341f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 10351f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return peer; 10361f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 10371f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 10381f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_send_tpk_m1(struct wpa_sm *sm, 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer) 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t buf_len; 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie timeoutie; 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 rsn_capab; 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *rbuf, *pos, *count_pos; 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 count; 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ie_hdr *hdr; 1049d5c075b0c218277d0f926daf1f9eff974b9656dcDmitry Shmidt int status; 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) { 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No security used on the link"); 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i_len = 0; 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_rsnie; 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * TPK Handshake Message 1: 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * FTIE: ANonce=0, SNonce=initiator nonce MIC=0, DataKDs=(RSNIE_I, 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Timeout Interval IE)) 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Filling RSN IE */ 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct rsn_ie_hdr *) peer->rsnie_i; 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->elem_id = WLAN_EID_RSN; 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(hdr->version, RSN_VERSION); 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (hdr + 1); 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED); 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt count_pos = pos; 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt count = 0; 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * AES-CCMP is the default Encryption preferred for TDLS, so 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * RSN IE is filled only with CCMP CIPHER 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Note: TKIP is not used to encrypt TDLS link. 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Regardless of the cipher used on the AP connection, select CCMP 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * here. 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP); 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt count++; 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(count_pos, count); 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, 1); 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_TPK_HANDSHAKE); 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_capab = WPA_CAPABILITY_PEERKEY_ENABLED; 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_capab |= RSN_NUM_REPLAY_COUNTERS_16 << 2; 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_ALT_RSN_IE) { 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Use alternative RSN IE for " 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "testing"); 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_capab = WPA_CAPABILITY_PEERKEY_ENABLED; 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, rsn_capab); 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_ALT_RSN_IE) { 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Number of PMKIDs */ 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 0x00; 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 0x00; 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->len = (pos - peer->rsnie_i) - 2; 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i_len = pos - peer->rsnie_i; 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE for TPK handshake", 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i, peer->rsnie_i_len); 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_rsnie: 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len = 0; 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm)) 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += peer->rsnie_i_len + sizeof(struct wpa_tdls_ftie) + 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct wpa_tdls_timeoutie); 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm) && 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (tdls_testing & TDLS_TESTING_LONG_FRAME)) 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += 170; 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_DIFF_BSSID) 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += sizeof(struct wpa_tdls_lnkid); 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf = os_zalloc(buf_len + 1); 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rbuf == NULL) { 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = rbuf; 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_ies; 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Initiator RSN IE */ 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_ie(pos, peer->rsnie_i, peer->rsnie_i_len); 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) pos; 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_type = WLAN_EID_FAST_BSS_TRANSITION; 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len = sizeof(struct wpa_tdls_ftie) - 2; 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_get_random(peer->inonce, WPA_NONCE_LEN)) { 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TDLS: Failed to get random data for initiator Nonce"); 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(rbuf); 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Initiator Nonce for TPK handshake", 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->inonce, WPA_NONCE_LEN); 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Snonce, peer->inonce, WPA_NONCE_LEN); 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE for TPK Handshake M1", 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) ftie, sizeof(struct wpa_tdls_ftie)); 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (ftie + 1); 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) { 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - add extra subelem to " 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "FTIE"); 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len += 170; 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 255; /* FTIE subelem */ 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 168; /* FTIE subelem length */ 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 168; 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Lifetime */ 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->lifetime = TPK_LIFETIME; 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_SHORT_LIFETIME) { 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use short TPK " 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "lifetime"); 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->lifetime = 301; 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_LIFETIME) { 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use long TPK " 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "lifetime"); 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->lifetime = 0xffffffff; 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_tdls_timeoutie(pos, (u8 *) &timeoutie, 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(timeoutie), peer->lifetime); 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds", peer->lifetime); 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_ies: 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_DIFF_BSSID) { 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use incorrect BSSID in " 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Link Identifier"); 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *l = (struct wpa_tdls_lnkid *) pos; 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_linkid(sm, peer, l); 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt l->bssid[5] ^= 0x01; 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(*l); 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending TDLS Setup Request / TPK " 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Handshake Message 1 (peer " MACSTR ")", 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(peer->addr)); 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1210d5c075b0c218277d0f926daf1f9eff974b9656dcDmitry Shmidt status = wpa_tdls_tpk_send(sm, peer->addr, WLAN_TDLS_SETUP_REQUEST, 12119ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt 1, 0, 0, peer->initiator, rbuf, pos - rbuf); 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(rbuf); 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1214d5c075b0c218277d0f926daf1f9eff974b9656dcDmitry Shmidt return status; 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_send_tpk_m2(struct wpa_sm *sm, 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const unsigned char *src_addr, u8 dtoken, 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid, 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpa_tdls_peer *peer) 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *rbuf, *pos; 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t buf_len; 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime; 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie timeoutie; 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 1228d5c075b0c218277d0f926daf1f9eff974b9656dcDmitry Shmidt int status; 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len = 0; 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm)) { 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Peer RSN IE, FTIE(Initiator Nonce, Responder Nonce), 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Lifetime */ 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += peer->rsnie_i_len + sizeof(struct wpa_tdls_ftie) + 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct wpa_tdls_timeoutie); 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += 170; 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf = os_zalloc(buf_len + 1); 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rbuf == NULL) 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = rbuf; 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_ies; 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Peer RSN IE */ 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_ie(pos, peer->rsnie_p, peer->rsnie_p_len); 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) pos; 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_type = WLAN_EID_FAST_BSS_TRANSITION; 12558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: ftie->mic_control to set 2-RESPONSE */ 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Anonce, peer->rnonce, WPA_NONCE_LEN); 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Snonce, peer->inonce, WPA_NONCE_LEN); 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len = sizeof(struct wpa_tdls_ftie) - 2; 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE for TPK M2", 12608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) ftie, sizeof(*ftie)); 12618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (ftie + 1); 12638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 12658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) { 12668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - add extra subelem to " 12678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "FTIE"); 12688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len += 170; 12698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 255; /* FTIE subelem */ 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 168; /* FTIE subelem length */ 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 168; 12728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 12748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Lifetime */ 12768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime = peer->lifetime; 12778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_WRONG_LIFETIME_RESP) { 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use wrong TPK " 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "lifetime in response"); 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime++; 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 12848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_tdls_timeoutie(pos, (u8 *) &timeoutie, 12858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(timeoutie), lifetime); 12868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds from initiator", 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime); 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* compute MIC before sending */ 12908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_ftie_mic(peer->tpk.kck, 2, (u8 *) lnkid, peer->rsnie_p, 12918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) &timeoutie, (u8 *) ftie, ftie->mic); 129221de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 129321de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt if (tdls_testing & TDLS_TESTING_WRONG_MIC) { 129421de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use wrong MIC"); 129521de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt ftie->mic[0] ^= 0x01; 129621de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt } 129721de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 12988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_ies: 1300d5c075b0c218277d0f926daf1f9eff974b9656dcDmitry Shmidt status = wpa_tdls_tpk_send(sm, src_addr, WLAN_TDLS_SETUP_RESPONSE, 13019ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt dtoken, 0, 0, peer->initiator, rbuf, 13029ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt pos - rbuf); 13038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(rbuf); 13048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1305d5c075b0c218277d0f926daf1f9eff974b9656dcDmitry Shmidt return status; 13068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_send_tpk_m3(struct wpa_sm *sm, 13108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const unsigned char *src_addr, u8 dtoken, 13118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid, 13128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpa_tdls_peer *peer) 13138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *rbuf, *pos; 13158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t buf_len; 13168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 13178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie timeoutie; 13188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime; 1319d5c075b0c218277d0f926daf1f9eff974b9656dcDmitry Shmidt int status; 1320df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt u32 peer_capab = 0; 13218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len = 0; 13238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm)) { 13248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Peer RSN IE, FTIE(Initiator Nonce, Responder Nonce), 13258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Lifetime */ 13268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += peer->rsnie_i_len + sizeof(struct wpa_tdls_ftie) + 13278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct wpa_tdls_timeoutie); 13288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 13298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) 13308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf_len += 170; 13318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 13328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rbuf = os_zalloc(buf_len + 1); 13358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rbuf == NULL) 13368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = rbuf; 13388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) 13408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_ies; 13418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Peer RSN IE */ 13438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_ie(pos, peer->rsnie_p, peer->rsnie_p_len); 13448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) pos; 13468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_type = WLAN_EID_FAST_BSS_TRANSITION; 13478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /*TODO: ftie->mic_control to set 3-CONFIRM */ 13488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Anonce, peer->rnonce, WPA_NONCE_LEN); 13498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(ftie->Snonce, peer->inonce, WPA_NONCE_LEN); 13508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len = sizeof(struct wpa_tdls_ftie) - 2; 13518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (ftie + 1); 13538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 13558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_LONG_FRAME) { 13568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - add extra subelem to " 13578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "FTIE"); 13588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->ie_len += 170; 13598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 255; /* FTIE subelem */ 13608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 168; /* FTIE subelem length */ 13618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 168; 13628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 13648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Lifetime */ 13668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime = peer->lifetime; 13678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 13688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_WRONG_LIFETIME_CONF) { 13698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use wrong TPK " 13708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "lifetime in confirm"); 13718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime++; 13728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 13748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = wpa_add_tdls_timeoutie(pos, (u8 *) &timeoutie, 13758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(timeoutie), lifetime); 13768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds", 13778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime); 13788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* compute MIC before sending */ 13808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_ftie_mic(peer->tpk.kck, 3, (u8 *) lnkid, peer->rsnie_p, 13818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) &timeoutie, (u8 *) ftie, ftie->mic); 138221de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 138321de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt if (tdls_testing & TDLS_TESTING_WRONG_MIC) { 138421de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - use wrong MIC"); 138521de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt ftie->mic[0] ^= 0x01; 138621de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt } 138721de214b4ba4271ca20843f3b8fba9f1501b2a89Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 13888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1389b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidtskip_ies: 1390b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidt 1391df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt if (peer->vht_capabilities) 1392df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt peer_capab |= TDLS_PEER_VHT; 1393b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidt if (peer->ht_capabilities) 1394df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt peer_capab |= TDLS_PEER_HT; 1395b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidt if (peer->wmm_capable) 1396df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt peer_capab |= TDLS_PEER_WMM; 1397df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt 1398d5c075b0c218277d0f926daf1f9eff974b9656dcDmitry Shmidt status = wpa_tdls_tpk_send(sm, src_addr, WLAN_TDLS_SETUP_CONFIRM, 13999ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt dtoken, 0, peer_capab, peer->initiator, 14009ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt rbuf, pos - rbuf); 14018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(rbuf); 14028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1403d5c075b0c218277d0f926daf1f9eff974b9656dcDmitry Shmidt return status; 14048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 14058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14071f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtstatic int wpa_tdls_send_discovery_response(struct wpa_sm *sm, 14081f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer, 14091f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt u8 dialog_token) 14101f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 1411661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt size_t buf_len = 0; 1412661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt struct wpa_tdls_timeoutie timeoutie; 1413661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt u16 rsn_capab; 1414661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt u8 *rbuf, *pos, *count_pos; 1415661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt u16 count; 1416661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt struct rsn_ie_hdr *hdr; 1417661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt int status; 1418661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt 14191f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending TDLS Discovery Response " 14201f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt "(peer " MACSTR ")", MAC2STR(peer->addr)); 1421661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) 1422661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt goto skip_rsn_ies; 1423661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt 1424661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt /* Filling RSN IE */ 1425661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt hdr = (struct rsn_ie_hdr *) peer->rsnie_i; 1426661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt hdr->elem_id = WLAN_EID_RSN; 1427661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt WPA_PUT_LE16(hdr->version, RSN_VERSION); 1428661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt pos = (u8 *) (hdr + 1); 1429661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED); 1430661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt pos += RSN_SELECTOR_LEN; 1431661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt count_pos = pos; 1432661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt pos += 2; 1433661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt count = 0; 14341f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1435661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt /* 1436661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt * AES-CCMP is the default encryption preferred for TDLS, so 1437661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt * RSN IE is filled only with CCMP cipher suite. 1438661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt * Note: TKIP is not used to encrypt TDLS link. 1439661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt * 1440661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt * Regardless of the cipher used on the AP connection, select CCMP 1441661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt * here. 1442661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt */ 1443661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP); 1444661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt pos += RSN_SELECTOR_LEN; 1445661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt count++; 1446661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt WPA_PUT_LE16(count_pos, count); 1447661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt WPA_PUT_LE16(pos, 1); 1448661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt pos += 2; 1449661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_TPK_HANDSHAKE); 1450661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt pos += RSN_SELECTOR_LEN; 1451661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt 1452661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt rsn_capab = WPA_CAPABILITY_PEERKEY_ENABLED; 1453661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt rsn_capab |= RSN_NUM_REPLAY_COUNTERS_16 << 2; 1454661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt WPA_PUT_LE16(pos, rsn_capab); 1455661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt pos += 2; 1456661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt hdr->len = (pos - (u8 *) hdr) - 2; 1457661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt peer->rsnie_i_len = pos - peer->rsnie_i; 1458661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt 1459661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE for Discovery Response", 1460661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt (u8 *) hdr, hdr->len + 2); 1461661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidtskip_rsn_ies: 1462661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt buf_len = 0; 1463661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt if (wpa_tdls_get_privacy(sm)) { 1464661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt /* Peer RSN IE, Lifetime */ 1465661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt buf_len += peer->rsnie_i_len + 1466661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt sizeof(struct wpa_tdls_timeoutie); 1467661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt } 1468661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt rbuf = os_zalloc(buf_len + 1); 1469661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt if (rbuf == NULL) { 1470661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 1471661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt return -1; 1472661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt } 1473661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt pos = rbuf; 1474661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt 1475661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) 1476661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt goto skip_ies; 1477661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt /* Initiator RSN IE */ 1478661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt pos = wpa_add_ie(pos, peer->rsnie_i, peer->rsnie_i_len); 1479661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt /* Lifetime */ 1480661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt peer->lifetime = TPK_LIFETIME; 1481661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt pos = wpa_add_tdls_timeoutie(pos, (u8 *) &timeoutie, 1482661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt sizeof(timeoutie), peer->lifetime); 1483661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds", peer->lifetime); 1484661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidtskip_ies: 1485661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt status = wpa_tdls_tpk_send(sm, peer->addr, WLAN_TDLS_DISCOVERY_RESPONSE, 14869ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt dialog_token, 0, 0, 0, rbuf, pos - rbuf); 1487661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt os_free(rbuf); 1488661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt 1489661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt return status; 14901f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 14911f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 14921f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 14931f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtstatic int 14941f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtwpa_tdls_process_discovery_request(struct wpa_sm *sm, const u8 *addr, 14951f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt const u8 *buf, size_t len) 14961f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 14971f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_eapol_ie_parse kde; 14981f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt const struct wpa_tdls_lnkid *lnkid; 14991f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer; 15001f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt size_t min_req_len = sizeof(struct wpa_tdls_frame) + 15011f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1 /* dialog token */ + sizeof(struct wpa_tdls_lnkid); 15021f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt u8 dialog_token; 15031f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15041f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Discovery Request from " MACSTR, 15051f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt MAC2STR(addr)); 15061f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15071f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (len < min_req_len) { 15081f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS Discovery Request is too short: " 15091f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt "%d", (int) len); 15101f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 15111f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 15121f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15131f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt dialog_token = buf[sizeof(struct wpa_tdls_frame)]; 15141f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15150c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt /* 15160c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt * Some APs will tack on a weird IE to the end of a TDLS 15170c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt * discovery request packet. This needn't fail the response, 15180c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt * since the required IE are verified separately. 15190c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt */ 15201f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wpa_supplicant_parse_ies(buf + sizeof(struct wpa_tdls_frame) + 1, 15211f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt len - (sizeof(struct wpa_tdls_frame) + 1), 15220c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt &kde) < 0) { 15230c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt wpa_printf(MSG_DEBUG, 15240c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt "TDLS: Failed to parse IEs in Discovery Request - ignore as an interop workaround"); 15250c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt } 15261f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15271f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (!kde.lnkid) { 15281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Link ID not found in Discovery " 15291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt "Request"); 15301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 15311f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 15321f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15331f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt lnkid = (const struct wpa_tdls_lnkid *) kde.lnkid; 15341f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15351f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (os_memcmp(sm->bssid, lnkid->bssid, ETH_ALEN) != 0) { 15361f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Discovery Request from different " 15371f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt " BSS " MACSTR, MAC2STR(lnkid->bssid)); 15381f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 15391f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 15401f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15414b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt peer = wpa_tdls_add_peer(sm, addr, NULL); 15421f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer == NULL) 15431f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 15441f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15451f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return wpa_tdls_send_discovery_response(sm, peer, dialog_token); 15461f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 15471f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15481f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15491f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtint wpa_tdls_send_discovery_request(struct wpa_sm *sm, const u8 *addr) 15501f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 15511f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 15521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 15531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending Discovery Request to peer " 15551f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt MACSTR, MAC2STR(addr)); 15561f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return wpa_tdls_tpk_send(sm, addr, WLAN_TDLS_DISCOVERY_REQUEST, 15579ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt 1, 0, 0, 1, NULL, 0); 15581f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 15591f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15601f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15611f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtstatic int copy_supp_rates(const struct wpa_eapol_ie_parse *kde, 15621f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt struct wpa_tdls_peer *peer) 15631f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 15641f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (!kde->supp_rates) { 15651f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No supported rates received"); 15661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 15671f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 1568a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt peer->supp_rates_len = merge_byte_arrays( 1569a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt peer->supp_rates, sizeof(peer->supp_rates), 1570a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt kde->supp_rates + 2, kde->supp_rates_len - 2, 157134af306c42b7ccf956508e7cd23f0ba90606e360Dmitry Shmidt kde->ext_supp_rates ? kde->ext_supp_rates + 2 : NULL, 157234af306c42b7ccf956508e7cd23f0ba90606e360Dmitry Shmidt kde->ext_supp_rates_len - 2); 15731f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return 0; 15741f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 15751f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 15761f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1577f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidtstatic int copy_peer_ht_capab(const struct wpa_eapol_ie_parse *kde, 1578f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt struct wpa_tdls_peer *peer) 1579f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt{ 15809d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt if (!kde->ht_capabilities) { 1581f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No supported ht capabilities " 1582f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt "received"); 1583f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 1584f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 1585f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1586f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (!peer->ht_capabilities) { 1587f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->ht_capabilities = 1588f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_zalloc(sizeof(struct ieee80211_ht_capabilities)); 1589f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (peer->ht_capabilities == NULL) 1590f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return -1; 1591f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 1592f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1593f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_memcpy(peer->ht_capabilities, kde->ht_capabilities, 1594f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt sizeof(struct ieee80211_ht_capabilities)); 1595f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Peer HT capabilities", 1596f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt (u8 *) peer->ht_capabilities, 1597f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt sizeof(struct ieee80211_ht_capabilities)); 1598f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1599f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 1600f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt} 1601f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1602f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 160333e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidtstatic int copy_peer_vht_capab(const struct wpa_eapol_ie_parse *kde, 160433e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt struct wpa_tdls_peer *peer) 160533e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt{ 16069d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt if (!kde->vht_capabilities) { 160733e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No supported vht capabilities " 160833e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt "received"); 160933e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt return 0; 161033e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt } 161133e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 161233e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt if (!peer->vht_capabilities) { 161333e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt peer->vht_capabilities = 161433e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt os_zalloc(sizeof(struct ieee80211_vht_capabilities)); 161533e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt if (peer->vht_capabilities == NULL) 161633e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt return -1; 161733e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt } 161833e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 161933e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt os_memcpy(peer->vht_capabilities, kde->vht_capabilities, 162033e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt sizeof(struct ieee80211_vht_capabilities)); 162133e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Peer VHT capabilities", 162233e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt (u8 *) peer->vht_capabilities, 162333e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt sizeof(struct ieee80211_vht_capabilities)); 162433e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 162533e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt return 0; 162633e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt} 162733e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 162833e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 1629f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidtstatic int copy_peer_ext_capab(const struct wpa_eapol_ie_parse *kde, 1630f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt struct wpa_tdls_peer *peer) 1631f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt{ 1632f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (!kde->ext_capab) { 1633f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No extended capabilities " 1634f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt "received"); 1635f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 1636f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 1637f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1638f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (!peer->ext_capab || peer->ext_capab_len < kde->ext_capab_len - 2) { 1639f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt /* Need to allocate buffer to fit the new information */ 1640f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_free(peer->ext_capab); 1641f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->ext_capab = os_zalloc(kde->ext_capab_len - 2); 1642f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (peer->ext_capab == NULL) 1643f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return -1; 1644f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 1645f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1646f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->ext_capab_len = kde->ext_capab_len - 2; 1647f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_memcpy(peer->ext_capab, kde->ext_capab + 2, peer->ext_capab_len); 1648f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1649f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 1650f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt} 1651f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1652f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1653b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidtstatic int copy_peer_wmm_capab(const struct wpa_eapol_ie_parse *kde, 1654b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt struct wpa_tdls_peer *peer) 1655b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt{ 1656b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt struct wmm_information_element *wmm; 1657b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 1658b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (!kde->wmm) { 1659b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No supported WMM capabilities received"); 1660b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt return 0; 1661b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } 1662b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 1663b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (kde->wmm_len < sizeof(struct wmm_information_element)) { 1664b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Invalid supported WMM capabilities received"); 1665b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt return -1; 1666b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } 1667b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 1668b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wmm = (struct wmm_information_element *) kde->wmm; 1669b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt peer->qos_info = wmm->qos_info; 1670b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 1671df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt peer->wmm_capable = 1; 1672df5a7e4c5c64890c2425bb47d665bbce4992b676Dmitry Shmidt 1673b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Peer WMM QOS Info 0x%x", peer->qos_info); 1674b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt return 0; 1675b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt} 1676b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 1677b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 1678344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidtstatic int copy_peer_supp_channels(const struct wpa_eapol_ie_parse *kde, 1679344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt struct wpa_tdls_peer *peer) 1680344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt{ 1681344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt if (!kde->supp_channels) { 1682344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No supported channels received"); 1683344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt return 0; 1684344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt } 1685344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1686344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt if (!peer->supp_channels || 1687344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_channels_len < kde->supp_channels_len) { 1688344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt os_free(peer->supp_channels); 1689344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_channels = os_zalloc(kde->supp_channels_len); 1690344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt if (peer->supp_channels == NULL) 1691344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt return -1; 1692344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt } 1693344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1694344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_channels_len = kde->supp_channels_len; 1695344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1696344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt os_memcpy(peer->supp_channels, kde->supp_channels, 1697344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_channels_len); 1698344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Peer Supported Channels", 1699344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt (u8 *) peer->supp_channels, peer->supp_channels_len); 1700344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt return 0; 1701344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt} 1702344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1703344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1704344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidtstatic int copy_peer_supp_oper_classes(const struct wpa_eapol_ie_parse *kde, 1705344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt struct wpa_tdls_peer *peer) 1706344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt{ 1707344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt if (!kde->supp_oper_classes) { 1708344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: No supported operating classes received"); 1709344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt return 0; 1710344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt } 1711344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1712344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt if (!peer->supp_oper_classes || 1713344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_oper_classes_len < kde->supp_oper_classes_len) { 1714344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt os_free(peer->supp_oper_classes); 1715344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_oper_classes = os_zalloc(kde->supp_oper_classes_len); 1716344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt if (peer->supp_oper_classes == NULL) 1717344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt return -1; 1718344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt } 1719344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1720344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_oper_classes_len = kde->supp_oper_classes_len; 1721344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt os_memcpy(peer->supp_oper_classes, kde->supp_oper_classes, 1722344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_oper_classes_len); 1723344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Peer Supported Operating Classes", 1724344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt (u8 *) peer->supp_oper_classes, 1725344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt peer->supp_oper_classes_len); 1726344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt return 0; 1727344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt} 1728344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1729344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1730d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidtstatic int wpa_tdls_addset_peer(struct wpa_sm *sm, struct wpa_tdls_peer *peer, 1731d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt int add) 1732d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt{ 1733d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt return wpa_sm_tdls_peer_addset(sm, peer->addr, add, peer->aid, 1734d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt peer->capability, 1735d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt peer->supp_rates, peer->supp_rates_len, 1736d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt peer->ht_capabilities, 1737d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt peer->vht_capabilities, 17389ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt peer->qos_info, peer->wmm_capable, 17399ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt peer->ext_capab, peer->ext_capab_len, 1740d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt peer->supp_channels, 1741d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt peer->supp_channels_len, 1742d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt peer->supp_oper_classes, 1743d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt peer->supp_oper_classes_len); 1744d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt} 1745d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 1746d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 17478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_process_tpk_m1(struct wpa_sm *sm, const u8 *src_addr, 17488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *buf, size_t len) 17498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 17508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 17518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse kde; 17528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ie_data ie; 17538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int cipher; 17548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *cpos; 17558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie = NULL; 17568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie *timeoutie; 17578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid; 17588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime = 0; 17598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#if 0 17608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ie_hdr *hdr; 17618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos; 17628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 rsn_capab; 17638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 rsn_ver; 17648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif 17658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dtoken; 17668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 ielen; 17678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status = WLAN_STATUS_UNSPECIFIED_FAILURE; 17688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tdls_prohibited = sm->tdls_prohibited; 17691f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt int existing_peer = 0; 17708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 3 + 3) 17728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 17738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cpos = buf; 17758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cpos += 1 /* pkt_type */ + 1 /* Category */ + 1 /* Action */; 17768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* driver had already verified the frame format */ 17788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dtoken = *cpos++; /* dialog token */ 17798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Dialog Token in TPK M1 %d", dtoken); 17818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17824b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt peer = wpa_tdls_add_peer(sm, src_addr, &existing_peer); 17834b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (peer == NULL) 17844b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt goto error; 17851f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 17860ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt /* If found, use existing entry instead of adding a new one; 17870ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * how to handle the case where both ends initiate at the 17880ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * same time? */ 17890ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (existing_peer) { 17900ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (peer->tpk_success) { 17910ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS Setup Request while " 17920ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "direct link is enabled - tear down the " 17930ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "old link first"); 1794d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, peer->addr); 1795d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt wpa_tdls_peer_clear(sm, peer); 1796d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt } else if (peer->initiator) { 1797d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt /* 1798d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt * An entry is already present, so check if we already 1799d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt * sent a TDLS Setup Request. If so, compare MAC 1800d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt * addresses and let the STA with the lower MAC address 1801d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt * continue as the initiator. The other negotiation is 1802d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt * terminated. 1803d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt */ 18040ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (os_memcmp(sm->own_addr, src_addr, ETH_ALEN) < 0) { 18050ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Discard request " 18060ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "from peer with higher address " 18070ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt MACSTR, MAC2STR(src_addr)); 18080ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt return -1; 18090ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } else { 18100ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Accept request " 18110ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "from peer with lower address " 18120ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt MACSTR " (terminate previously " 18130ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "initiated negotiation", 18140ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt MAC2STR(src_addr)); 1815d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, 1816d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt peer->addr); 1817d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt wpa_tdls_peer_clear(sm, peer); 18180ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } 18190ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } 18200ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } 18210ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt 18221f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* capability information */ 18231f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt peer->capability = WPA_GET_LE16(cpos); 18241f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt cpos += 2; 18258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = len - (cpos - buf); /* start of IE in buf */ 18277f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt 18287f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt /* 18297f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt * Don't reject the message if failing to parse IEs. The IEs we need are 18307f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt * explicitly checked below. Some APs may add arbitrary padding to the 18317f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt * end of short TDLS frames and that would look like invalid IEs. 18327f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt */ 18337f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt if (wpa_supplicant_parse_ies(cpos, ielen, &kde) < 0) 18347f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt wpa_printf(MSG_DEBUG, 18357f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt "TDLS: Failed to parse IEs in TPK M1 - ignore as an interop workaround"); 18368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.lnkid == NULL || kde.lnkid_len < 3 * ETH_ALEN) { 18388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No valid Link Identifier IE in " 18398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M1"); 18408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 18418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Link ID Received from TPK M1", 18438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.lnkid, kde.lnkid_len); 18448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid = (struct wpa_tdls_lnkid *) kde.lnkid; 18458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(sm->bssid, lnkid->bssid, ETH_ALEN) != 0) { 18468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: TPK M1 from diff BSS"); 1847661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt status = WLAN_STATUS_REQUEST_DECLINED; 18488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 18498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK M1 - TPK initiator " MACSTR, 18528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(src_addr)); 18538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (copy_supp_rates(&kde, peer) < 0) 18551f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt goto error; 18561f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 1857f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (copy_peer_ht_capab(&kde, peer) < 0) 1858f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt goto error; 1859f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 186033e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt if (copy_peer_vht_capab(&kde, peer) < 0) 186133e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt goto error; 186233e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 1863f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (copy_peer_ext_capab(&kde, peer) < 0) 1864f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt goto error; 1865f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1866344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt if (copy_peer_supp_channels(&kde, peer) < 0) 1867344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt goto error; 1868344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1869344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt if (copy_peer_supp_oper_classes(&kde, peer) < 0) 1870344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt goto error; 1871344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 1872f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->qos_info = kde.qosinfo; 1873f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1874b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt /* Overwrite with the qos_info obtained in WMM IE */ 1875b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (copy_peer_wmm_capab(&kde, peer) < 0) 1876b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt goto error; 1877b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 187851b6ea882f234c14cd1fe1332a3840cf61fafccaDmitry Shmidt peer->aid = kde.aid; 187951b6ea882f234c14cd1fe1332a3840cf61fafccaDmitry Shmidt 18808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 18818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_CONCURRENT_INIT) { 18824b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt peer = wpa_tdls_add_peer(sm, src_addr, NULL); 18834b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (peer == NULL) 18844b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt goto error; 18858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing concurrent initiation of " 18868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TDLS setup - send own request"); 18878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->initiator = 1; 18889ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt wpa_sm_tdls_peer_addset(sm, peer->addr, 1, 0, 0, NULL, 0, NULL, 18899ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt NULL, 0, 0, NULL, 0, NULL, 0, NULL, 0); 18908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_send_tpk_m1(sm, peer); 18918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((tdls_testing & TDLS_TESTING_IGNORE_AP_PROHIBIT) && 18948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tdls_prohibited) { 18958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - ignore AP prohibition " 18968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "on TDLS"); 18978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tdls_prohibited = 0; 18988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 18998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 19008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_prohibited) { 19028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: TDLS prohibited in this BSS"); 19038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_REQUEST_DECLINED; 19048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) { 19088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.rsn_ie) { 19098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: RSN IE in TPK M1 while " 19108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "security is disabled"); 19118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_SECURITY_DISABLED; 19128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_rsn; 19158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.ftie == NULL || kde.ftie_len < sizeof(*ftie) || 19188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.rsn_ie == NULL) { 19198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No FTIE or RSN IE in TPK M1"); 19208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_PARAMETERS; 19218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.rsn_ie_len > TDLS_MAX_IE_LEN) { 19258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Too long Initiator RSN IE in " 19268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M1"); 19278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSNIE; 19288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_parse_wpa_ie_rsn(kde.rsn_ie, kde.rsn_ie_len, &ie) < 0) { 19328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to parse RSN IE in TPK M1"); 19338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSNIE; 19348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = ie.pairwise_cipher; 19388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (cipher & WPA_CIPHER_CCMP) { 19398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Using CCMP for direct link"); 19408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = WPA_CIPHER_CCMP; 19418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 19428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No acceptable cipher in TPK M1"); 19438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; 19448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((ie.capabilities & 19488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (WPA_CAPABILITY_NO_PAIRWISE | WPA_CAPABILITY_PEERKEY_ENABLED)) != 19498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_CAPABILITY_PEERKEY_ENABLED) { 19508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Invalid RSN Capabilities in " 19518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M1"); 19528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSN_IE_CAPAB; 19538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Lifetime */ 19578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.key_lifetime == NULL) { 19588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No Key Lifetime IE in TPK M1"); 19598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_UNACCEPTABLE_LIFETIME; 19608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt timeoutie = (struct wpa_tdls_timeoutie *) kde.key_lifetime; 19638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime = WPA_GET_LE32(timeoutie->value); 19648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds", lifetime); 19658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (lifetime < 300) { 19668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Too short TPK lifetime"); 19678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_UNACCEPTABLE_LIFETIME; 19688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 19698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_rsn: 19721f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt#ifdef CONFIG_TDLS_TESTING 19731f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (tdls_testing & TDLS_TESTING_CONCURRENT_INIT) { 19741f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (os_memcmp(sm->own_addr, peer->addr, ETH_ALEN) < 0) { 19751f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* 19761f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * The request frame from us is going to win, so do not 19771f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * replace information based on this request frame from 19781f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * the peer. 19791f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt */ 19801f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt goto skip_rsn_check; 19811f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 19821f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 19831f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 19841f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 19858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->initiator = 0; /* Need to check */ 19868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dtoken = dtoken; 19878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) { 19898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i_len = 0; 19908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p_len = 0; 19918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->cipher = WPA_CIPHER_NONE; 19928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_rsn_check; 19938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 19948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) kde.ftie; 19968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->rsnie_i, kde.rsn_ie, kde.rsn_ie_len); 19978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i_len = kde.rsn_ie_len; 19988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->cipher = cipher; 19998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20006102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt if (os_memcmp(peer->inonce, ftie->Snonce, WPA_NONCE_LEN) != 0) { 20016102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt /* 20026102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt * There is no point in updating the RNonce for every obtained 20036102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt * TPK M1 frame (e.g., retransmission due to timeout) with the 20046102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt * same INonce (SNonce in FTIE). However, if the TPK M1 is 20056102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt * retransmitted with a different INonce, update the RNonce 20066102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt * since this is for a new TDLS session. 20076102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt */ 20086102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt wpa_printf(MSG_DEBUG, 20096102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt "TDLS: New TPK M1 INonce - generate new RNonce"); 20106102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt os_memcpy(peer->inonce, ftie->Snonce, WPA_NONCE_LEN); 20116102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt if (os_get_random(peer->rnonce, WPA_NONCE_LEN)) { 20126102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt wpa_msg(sm->ctx->ctx, MSG_WARNING, 20136102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt "TDLS: Failed to get random data for responder nonce"); 20146102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt goto error; 20156102472da23e48cb1406b87ec767f4fd9a40a85dSunil Dutt } 20168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 20178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#if 0 20198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* get version info from RSNIE received from Peer */ 20208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct rsn_ie_hdr *) kde.rsn_ie; 20218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_ver = WPA_GET_LE16(hdr->version); 20228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* use min(peer's version, out version) */ 20248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rsn_ver > RSN_VERSION) 20258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_ver = RSN_VERSION; 20268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct rsn_ie_hdr *) peer->rsnie_p; 20288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->elem_id = WLAN_EID_RSN; 20308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(hdr->version, rsn_ver); 20318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (hdr + 1); 20328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED); 20348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 20358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Include only the selected cipher in pairwise cipher suite */ 20368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, 1); 20378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 20388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (cipher == WPA_CIPHER_CCMP) 20398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP); 20408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 20418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, 1); 20438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 20448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_TPK_HANDSHAKE); 20458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 20468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_capab = WPA_CAPABILITY_PEERKEY_ENABLED; 20488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsn_capab |= RSN_NUM_REPLAY_COUNTERS_16 << 2; 20498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, rsn_capab); 20508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 20518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->len = (pos - peer->rsnie_p) - 2; 20538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p_len = pos - peer->rsnie_p; 20548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif 20558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* temp fix: validation of RSNIE later */ 20578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->rsnie_p, peer->rsnie_i, peer->rsnie_i_len); 20588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p_len = peer->rsnie_i_len; 20598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE for TPK handshake", 20618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p, peer->rsnie_p_len); 20628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->lifetime = lifetime; 20648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_generate_tpk(peer, sm->own_addr, sm->bssid); 20668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_rsn_check: 20689ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 20699ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt if (tdls_testing & TDLS_TESTING_CONCURRENT_INIT) 20709ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt goto skip_add_peer; 20719ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 20729ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt 2073d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt /* add supported rates, capabilities, and qos_info to the TDLS peer */ 2074d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt if (wpa_tdls_addset_peer(sm, peer, 1) < 0) 207543cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt goto error; 207643cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt 20779ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 20789ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidtskip_add_peer: 20799ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 208073b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt peer->tpk_in_progress = 1; 20811f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 20828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending TDLS Setup Response / TPK M2"); 20831f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wpa_tdls_send_tpk_m2(sm, src_addr, dtoken, lnkid, peer) < 0) { 2084d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, peer->addr); 20851f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt goto error; 20861f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 20878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 20898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidterror: 20919ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt wpa_tdls_send_error(sm, src_addr, WLAN_TDLS_SETUP_RESPONSE, dtoken, 0, 20928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status); 209343cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt if (peer) 209443cb578dfe2c492257636f6234a24178ed27789eDmitry Shmidt wpa_tdls_peer_free(sm, peer); 20958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 20968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 20978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20998da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidtstatic int wpa_tdls_enable_link(struct wpa_sm *sm, struct wpa_tdls_peer *peer) 21008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 21018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->tpk_success = 1; 210273b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt peer->tpk_in_progress = 0; 21038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_timeout, sm, peer); 21048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_tdls_get_privacy(sm)) { 21058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime = peer->lifetime; 21068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 21078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Start the initiator process a bit earlier to avoid race 21088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * condition with the responder sending teardown request. 21098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 21108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (lifetime > 3 && peer->initiator) 21118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime -= 3; 21128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_register_timeout(lifetime, 0, wpa_tdls_tpk_timeout, 21138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm, peer); 21148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 21158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_NO_TPK_EXPIRATION) { 21168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - disable TPK " 21178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "expiration"); 21188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eloop_cancel_timeout(wpa_tdls_tpk_timeout, sm, peer); 21198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 21218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21221f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 21238da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt if (peer->reconfig_key && wpa_tdls_set_key(sm, peer) < 0) { 21248da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Could not configure key to the " 21258da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt "driver"); 21268da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt return -1; 21278da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt } 21288da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt peer->reconfig_key = 0; 21298da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt 21308da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt return wpa_sm_tdls_oper(sm, TDLS_ENABLE_LINK, peer->addr); 21318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 21328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_process_tpk_m2(struct wpa_sm *sm, const u8 *src_addr, 21358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *buf, size_t len) 21368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 21378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 21388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse kde; 21398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ie_data ie; 21408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int cipher; 21418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 21428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie *timeoutie; 21438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid; 21448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime; 21458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dtoken; 21468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ielen; 21478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status; 21488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 2149292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt int ret = 0; 21508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Received TDLS Setup Response / TPK M2 " 21528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(Peer " MACSTR ")", MAC2STR(src_addr)); 21538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 21548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, src_addr, ETH_ALEN) == 0) 21558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 21568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL) { 21588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No matching peer found for " 21598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M2: " MACSTR, MAC2STR(src_addr)); 21608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21620ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (!peer->initiator) { 21630ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt /* 21640ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * This may happen if both devices try to initiate TDLS at the 21650ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * same time and we accept the TPK M1 from the peer in 21660ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt * wpa_tdls_process_tpk_m1() and clear our previous state. 21670ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt */ 21680ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt wpa_printf(MSG_INFO, "TDLS: We were not the initiator, so " 21690ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt "ignore TPK M2 from " MACSTR, MAC2STR(src_addr)); 21700ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt return -1; 21710ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt } 21728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_retry_timeout_cancel(sm, peer, WLAN_TDLS_SETUP_REQUEST); 21738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2174adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt if (len < 3 + 2 + 1) { 2175d0ef38b52c069e34102b38dafbbc1fe055364ae8Sunil Dutt wpa_tdls_disable_peer_link(sm, peer); 21768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2177adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt } 2178adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt 21798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = buf; 21808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 1 /* pkt_type */ + 1 /* Category */ + 1 /* Action */; 21818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WPA_GET_LE16(pos); 21828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 /* status code */; 21838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status != WLAN_STATUS_SUCCESS) { 21858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Status code in TPK M2: %u", 21868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status); 2187d0ef38b52c069e34102b38dafbbc1fe055364ae8Sunil Dutt wpa_tdls_disable_peer_link(sm, peer); 21888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 21898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 21908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_UNSPECIFIED_FAILURE; 21928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: need to verify dialog token matches here or in kernel */ 21948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dtoken = *pos++; /* dialog token */ 21958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Dialog Token in TPK M2 %d", dtoken); 21978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2198adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt if (len < 3 + 2 + 1 + 2) { 2199d0ef38b52c069e34102b38dafbbc1fe055364ae8Sunil Dutt wpa_tdls_disable_peer_link(sm, peer); 22008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2201adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt } 22021f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 22031f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* capability information */ 22041f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt peer->capability = WPA_GET_LE16(pos); 22051f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt pos += 2; 22068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = len - (pos - buf); /* start of IE in buf */ 22087f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt 22097f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt /* 22107f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt * Don't reject the message if failing to parse IEs. The IEs we need are 22117f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt * explicitly checked below. Some APs may add arbitrary padding to the 22127f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt * end of short TDLS frames and that would look like invalid IEs. 22137f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt */ 22147f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt if (wpa_supplicant_parse_ies(pos, ielen, &kde) < 0) 22157f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt wpa_printf(MSG_DEBUG, 22167f65602d49069f96a7bb44da8bd79ffe8d4c6a98Dmitry Shmidt "TDLS: Failed to parse IEs in TPK M2 - ignore as an interop workaround"); 22178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 22198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_testing & TDLS_TESTING_DECLINE_RESP) { 22208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - decline response"); 22218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_REQUEST_DECLINED; 22228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 22238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 22248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 22258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.lnkid == NULL || kde.lnkid_len < 3 * ETH_ALEN) { 22278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No valid Link Identifier IE in " 22288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M2"); 22298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 22308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 22318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Link ID Received from TPK M2", 22328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.lnkid, kde.lnkid_len); 22338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid = (struct wpa_tdls_lnkid *) kde.lnkid; 22348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(sm->bssid, lnkid->bssid, ETH_ALEN) != 0) { 22368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: TPK M2 from different BSS"); 22378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_NOT_IN_SAME_BSS; 22388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 22398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 22408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22411f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (copy_supp_rates(&kde, peer) < 0) 22421f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt goto error; 22431f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 2244f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (copy_peer_ht_capab(&kde, peer) < 0) 2245f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt goto error; 2246f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 224733e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt if (copy_peer_vht_capab(&kde, peer) < 0) 224833e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt goto error; 224933e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt 2250f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (copy_peer_ext_capab(&kde, peer) < 0) 2251f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt goto error; 2252f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2253344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt if (copy_peer_supp_channels(&kde, peer) < 0) 2254344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt goto error; 2255344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 2256344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt if (copy_peer_supp_oper_classes(&kde, peer) < 0) 2257344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt goto error; 2258344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt 2259f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer->qos_info = kde.qosinfo; 2260f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2261b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt /* Overwrite with the qos_info obtained in WMM IE */ 2262b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (copy_peer_wmm_capab(&kde, peer) < 0) 2263b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt goto error; 2264b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 226551b6ea882f234c14cd1fe1332a3840cf61fafccaDmitry Shmidt peer->aid = kde.aid; 226651b6ea882f234c14cd1fe1332a3840cf61fafccaDmitry Shmidt 22678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) { 22688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p_len = 0; 22698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->cipher = WPA_CIPHER_NONE; 22708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_rsn; 22718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 22728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 22738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.ftie == NULL || kde.ftie_len < sizeof(*ftie) || 22748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.rsn_ie == NULL) { 22758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No FTIE or RSN IE in TPK M2"); 22768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_PARAMETERS; 22778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 22788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 22798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE Received from TPK M2", 22808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.rsn_ie, kde.rsn_ie_len); 22818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 228209f57babfc1e4473db20ced4f58a4c9f082c8ed8Dmitry Shmidt if (kde.rsn_ie_len > TDLS_MAX_IE_LEN) { 228309f57babfc1e4473db20ced4f58a4c9f082c8ed8Dmitry Shmidt wpa_printf(MSG_INFO, 228409f57babfc1e4473db20ced4f58a4c9f082c8ed8Dmitry Shmidt "TDLS: Too long Responder RSN IE in TPK M2"); 228509f57babfc1e4473db20ced4f58a4c9f082c8ed8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSNIE; 228609f57babfc1e4473db20ced4f58a4c9f082c8ed8Dmitry Shmidt goto error; 228709f57babfc1e4473db20ced4f58a4c9f082c8ed8Dmitry Shmidt } 228809f57babfc1e4473db20ced4f58a4c9f082c8ed8Dmitry Shmidt 22898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 22908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * FIX: bitwise comparison of RSN IE is not the correct way of 22918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * validation this. It can be different, but certain fields must 22928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * match. Since we list only a single pairwise cipher in TPK M1, the 22938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * memcmp is likely to work in most cases, though. 22948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 22958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.rsn_ie_len != peer->rsnie_i_len || 22968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(peer->rsnie_i, kde.rsn_ie, peer->rsnie_i_len) != 0) { 22978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: RSN IE in TPK M2 does " 22988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with RSN IE used in TPK M1"); 22998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE Sent in TPK M1", 23008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_i, peer->rsnie_i_len); 23018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE Received from TPK M2", 23028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.rsn_ie, kde.rsn_ie_len); 23038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSNIE; 23048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 23058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 23068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_parse_wpa_ie_rsn(kde.rsn_ie, kde.rsn_ie_len, &ie) < 0) { 23088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Failed to parse RSN IE in TPK M2"); 23098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_INVALID_RSNIE; 23108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 23118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 23128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = ie.pairwise_cipher; 23148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (cipher == WPA_CIPHER_CCMP) { 23158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Using CCMP for direct link"); 23168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = WPA_CIPHER_CCMP; 23178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 23188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No acceptable cipher in TPK M2"); 23198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; 23208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 23218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 23228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE Received from TPK M2", 23248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.ftie, sizeof(*ftie)); 23258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) kde.ftie; 23268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!os_memcmp(peer->inonce, ftie->Snonce, WPA_NONCE_LEN) == 0) { 23288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: FTIE SNonce in TPK M2 does " 23298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with FTIE SNonce used in TPK M1"); 23308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Silently discard the frame */ 23318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 23328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 23338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Responder Nonce and RSN IE */ 23358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->rnonce, ftie->Anonce, WPA_NONCE_LEN); 23368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(peer->rsnie_p, kde.rsn_ie, kde.rsn_ie_len); 23378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->rsnie_p_len = kde.rsn_ie_len; 23388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->cipher = cipher; 23398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Lifetime */ 23418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.key_lifetime == NULL) { 23428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No Key Lifetime IE in TPK M2"); 23438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_UNACCEPTABLE_LIFETIME; 23448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 23458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 23468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt timeoutie = (struct wpa_tdls_timeoutie *) kde.key_lifetime; 23478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime = WPA_GET_LE32(timeoutie->value); 23488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds in TPK M2", 23498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime); 23508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (lifetime != peer->lifetime) { 23518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Unexpected TPK lifetime %u in " 23528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M2 (expected %u)", lifetime, peer->lifetime); 23538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WLAN_STATUS_UNACCEPTABLE_LIFETIME; 23548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 23558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 23568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_generate_tpk(peer, sm->own_addr, sm->bssid); 23588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Process MIC check to see if TPK M2 is right */ 23608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_verify_tdls_mic(2, peer, (u8 *) lnkid, 23618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) timeoutie, ftie) < 0) { 23628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Discard the frame */ 23638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_del_key(sm, peer); 236438ffd8879e7990491033bf20568212e8c3472b48Sunil Dutt wpa_tdls_disable_peer_link(sm, peer); 23658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 23668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 23678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23688da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt if (wpa_tdls_set_key(sm, peer) < 0) { 23698da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt /* 23708da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt * Some drivers may not be able to config the key prior to full 23718da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt * STA entry having been configured. 23728da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt */ 23738da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Try to configure TPK again after " 23748da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt "STA entry is complete"); 23758da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt peer->reconfig_key = 1; 23768da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt } 23778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 23788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_rsn: 23798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dtoken = dtoken; 23808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2381d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt /* add supported rates, capabilities, and qos_info to the TDLS peer */ 2382d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt if (wpa_tdls_addset_peer(sm, peer, 0) < 0) 2383d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt goto error; 2384d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 23858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Sending TDLS Setup Confirm / " 23868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK Handshake Message 3"); 2387d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt if (wpa_tdls_send_tpk_m3(sm, src_addr, dtoken, lnkid, peer) < 0) 2388d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt goto error; 23898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2390292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt if (!peer->tpk_success) { 2391292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt /* 2392292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt * Enable Link only when tpk_success is 0, signifying that this 2393292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt * processing of TPK M2 frame is not because of a retransmission 2394292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt * during TDLS setup handshake. 2395292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt */ 2396292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt ret = wpa_tdls_enable_link(sm, peer); 2397292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt if (ret < 0) { 2398292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Could not enable link"); 2399292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt wpa_tdls_do_teardown( 2400292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt sm, peer, 2401292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED); 2402292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt } 24038da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt } 24048da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt return ret; 24058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidterror: 24079ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt wpa_tdls_send_error(sm, src_addr, WLAN_TDLS_SETUP_CONFIRM, dtoken, 1, 24088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status); 2409d0ef38b52c069e34102b38dafbbc1fe055364ae8Sunil Dutt wpa_tdls_disable_peer_link(sm, peer); 24108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 24118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 24128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_tdls_process_tpk_m3(struct wpa_sm *sm, const u8 *src_addr, 24158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *buf, size_t len) 24168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 24178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 24188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse kde; 24198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_ftie *ftie; 24208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie *timeoutie; 24218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_lnkid *lnkid; 24228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ielen; 24238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status; 24248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 24258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u32 lifetime; 2426292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt int ret = 0; 24278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Received TDLS Setup Confirm / TPK M3 " 24298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(Peer " MACSTR ")", MAC2STR(src_addr)); 24308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 24318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, src_addr, ETH_ALEN) == 0) 24328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 24338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 24348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL) { 24358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No matching peer found for " 24368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M3: " MACSTR, MAC2STR(src_addr)); 24378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 24388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 24398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_tpk_retry_timeout_cancel(sm, peer, WLAN_TDLS_SETUP_RESPONSE); 24408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 3 + 3) 2442adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 24438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = buf; 24448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 1 /* pkt_type */ + 1 /* Category */ + 1 /* Action */; 24458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WPA_GET_LE16(pos); 24478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status != 0) { 24498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Status code in TPK M3: %u", 24508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status); 2451adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 24528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 24538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2 /* status code */ + 1 /* dialog token */; 24548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = len - (pos - buf); /* start of IE in buf */ 24560c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt 24570c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt /* 24580c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt * Don't reject the message if failing to parse IEs. The IEs we need are 24590c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt * explicitly checked below. Some APs piggy-back broken IEs to the end 24600c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt * of a TDLS Confirm packet, which will fail the link if we don't ignore 24610c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt * this error. 24620c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt */ 24638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_parse_ies((const u8 *) pos, ielen, &kde) < 0) { 24640c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt wpa_printf(MSG_DEBUG, 24650c08fdcf5231617f2340cb18e45769a8ed3a1dc4Dmitry Shmidt "TDLS: Failed to parse KDEs in TPK M3 - ignore as an interop workaround"); 24668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 24678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.lnkid == NULL || kde.lnkid_len < 3 * ETH_ALEN) { 24698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No Link Identifier IE in TPK M3"); 2470adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 24718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 24728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Link ID Received from TPK M3", 24738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) kde.lnkid, kde.lnkid_len); 24748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lnkid = (struct wpa_tdls_lnkid *) kde.lnkid; 24758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(sm->bssid, lnkid->bssid, ETH_ALEN) != 0) { 24778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: TPK M3 from diff BSS"); 2478adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 24798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 24808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_tdls_get_privacy(sm)) 24828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto skip_rsn; 24838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.ftie == NULL || kde.ftie_len < sizeof(*ftie)) { 24858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No FTIE in TPK M3"); 2486adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 24878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 24888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: FTIE Received from TPK M3", 24898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.ftie, sizeof(*ftie)); 24908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct wpa_tdls_ftie *) kde.ftie; 24918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 24928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.rsn_ie == NULL) { 24938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No RSN IE in TPK M3"); 2494adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 24958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 24968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: RSN IE Received from TPK M3", 24978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt kde.rsn_ie, kde.rsn_ie_len); 24988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.rsn_ie_len != peer->rsnie_p_len || 24998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(kde.rsn_ie, peer->rsnie_p, peer->rsnie_p_len) != 0) { 25008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: RSN IE in TPK M3 does not match " 25018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "with the one sent in TPK M2"); 2502adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 25038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 25048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!os_memcmp(peer->rnonce, ftie->Anonce, WPA_NONCE_LEN) == 0) { 25068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: FTIE ANonce in TPK M3 does " 25078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with FTIE ANonce used in TPK M2"); 2508adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 25098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 25108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!os_memcmp(peer->inonce, ftie->Snonce, WPA_NONCE_LEN) == 0) { 25128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: FTIE SNonce in TPK M3 does not " 25138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "match with FTIE SNonce used in TPK M1"); 2514adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 25158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 25168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (kde.key_lifetime == NULL) { 25188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: No Key Lifetime IE in TPK M3"); 2519adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 25208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 25218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt timeoutie = (struct wpa_tdls_timeoutie *) kde.key_lifetime; 25228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Timeout IE Received from TPK M3", 25238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) timeoutie, sizeof(*timeoutie)); 25248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime = WPA_GET_LE32(timeoutie->value); 25258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TPK lifetime %u seconds in TPK M3", 25268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime); 25278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (lifetime != peer->lifetime) { 25288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Unexpected TPK lifetime %u in " 25298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TPK M3 (expected %u)", lifetime, peer->lifetime); 2530adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 25318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 25328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_supplicant_verify_tdls_mic(3, peer, (u8 *) lnkid, 25348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) timeoutie, ftie) < 0) { 25358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_del_key(sm, peer); 2536adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt goto error; 25378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 25388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25398da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt if (wpa_tdls_set_key(sm, peer) < 0) { 25408da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt /* 25418da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt * Some drivers may not be able to config the key prior to full 25428da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt * STA entry having been configured. 25438da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt */ 25448da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Try to configure TPK again after " 25458da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt "STA entry is complete"); 25468da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt peer->reconfig_key = 1; 25478da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt } 25488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtskip_rsn: 2550d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt /* add supported rates, capabilities, and qos_info to the TDLS peer */ 2551d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt if (wpa_tdls_addset_peer(sm, peer, 0) < 0) 2552d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt goto error; 2553d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt 2554292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt if (!peer->tpk_success) { 2555292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt /* 2556292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt * Enable Link only when tpk_success is 0, signifying that this 2557292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt * processing of TPK M3 frame is not because of a retransmission 2558292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt * during TDLS setup handshake. 2559292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt */ 2560292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt ret = wpa_tdls_enable_link(sm, peer); 2561292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt if (ret < 0) { 2562292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Could not enable link"); 2563d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt goto error; 2564292b0c3a742226c295f8db76eaef9e90c90e7513Dmitry Shmidt } 25658da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt } 25668da800a193fb6f8832218715f82a7b4e2d2ad338Dmitry Shmidt return ret; 2567adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutterror: 2568d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt wpa_tdls_do_teardown(sm, peer, WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED); 2569adce9cf73c2237aff40a49fc3d0b315711f291d8Sunil Dutt return -1; 25708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 25718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * wpa_add_tdls_timeoutie(u8 *pos, u8 *ie, size_t ie_len, u32 tsecs) 25748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 25758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_timeoutie *lifetime = (struct wpa_tdls_timeoutie *) ie; 25768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(lifetime, 0, ie_len); 25788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime->ie_type = WLAN_EID_TIMEOUT_INTERVAL; 25798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime->ie_len = sizeof(struct wpa_tdls_timeoutie) - 2; 25808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt lifetime->interval_type = WLAN_TIMEOUT_KEY_LIFETIME; 25818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE32(lifetime->value, tsecs); 25828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, ie, ie_len); 25838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos + ie_len; 25848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 25858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 25878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 25888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_start - Initiate TDLS handshake (send TPK Handshake Message 1) 25898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @sm: Pointer to WPA state machine data from wpa_sm_init() 25908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @peer: MAC address of the peer STA 25918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: 0 on success, or -1 on failure 25928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 25938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Send TPK Handshake Message 1 info to driver to start TDLS 25948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * handshake with the peer. 25958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 25968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_tdls_start(struct wpa_sm *sm, const u8 *addr) 25978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 25988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 25998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tdls_prohibited = sm->tdls_prohibited; 26008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26011f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 26028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 26038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_TDLS_TESTING 26058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((tdls_testing & TDLS_TESTING_IGNORE_AP_PROHIBIT) && 26068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tdls_prohibited) { 26078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Testing - ignore AP prohibition " 26088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "on TDLS"); 26098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tdls_prohibited = 0; 26108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 26118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_TDLS_TESTING */ 26128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tdls_prohibited) { 26148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS is prohibited in this BSS - " 26158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "reject request to start setup"); 26168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 26178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 26188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26194b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt peer = wpa_tdls_add_peer(sm, addr, NULL); 26204b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt if (peer == NULL) 26214b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt return -1; 26228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 262373b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt if (peer->tpk_in_progress) { 262473b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt wpa_printf(MSG_DEBUG, "TDLS: Setup is already in progress with the peer"); 262573b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt return 0; 262673b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt } 262773b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt 26288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->initiator = 1; 26298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* add the peer to the driver as a "setup in progress" peer */ 2631d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt if (wpa_sm_tdls_peer_addset(sm, peer->addr, 1, 0, 0, NULL, 0, NULL, 26329ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt NULL, 0, 0, NULL, 0, NULL, 0, NULL, 0)) { 2633d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt wpa_tdls_disable_peer_link(sm, peer); 2634d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt return -1; 2635d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt } 26361f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 263773b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt peer->tpk_in_progress = 1; 263873b28cc4bd1d5efa3534ad9e28365fea9a62ffd3Sunil Dutt 26391f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wpa_tdls_send_tpk_m1(sm, peer) < 0) { 2640d0ef38b52c069e34102b38dafbbc1fe055364ae8Sunil Dutt wpa_tdls_disable_peer_link(sm, peer); 26411f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return -1; 26421f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 26431f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 26441f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return 0; 26458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 26468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26484b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidtvoid wpa_tdls_remove(struct wpa_sm *sm, const u8 *addr) 26498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 26508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer; 26518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 26534b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt return; 26548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 26568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 26578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 26588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 26598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer == NULL || !peer->tpk_success) 26614b9d52f502481b258fec743c03a5e957e5605afcDmitry Shmidt return; 26628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26631f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_external_setup) { 26641f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* 26651f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * Disable previous link to allow renegotiation to be completed 26661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * on AP path. 26671f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt */ 2668b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidt wpa_tdls_do_teardown(sm, peer, 2669b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidt WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED); 26701f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 26718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 26728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 26758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_supplicant_rx_tdls - Receive TDLS data frame 26768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 26778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This function is called to receive TDLS (ethertype = 0x890d) data frames. 26788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 26798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_supplicant_rx_tdls(void *ctx, const u8 *src_addr, 26808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *buf, size_t len) 26818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 26828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_sm *sm = ctx; 26838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_frame *tf; 26848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "TDLS: Received Data frame encapsulation", 26868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf, len); 26878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26881f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) { 26891f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Discard message - TDLS disabled " 26901f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt "or unsupported by driver"); 26918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 26928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 26938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(src_addr, sm->own_addr, ETH_ALEN) == 0) { 26958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Discard copy of own message"); 26968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 26978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 26988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < sizeof(*tf)) { 27008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Drop too short frame"); 27018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 27028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 27038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 27048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Check to make sure its a valid encapsulated TDLS frame */ 27058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tf = (struct wpa_tdls_frame *) buf; 27068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tf->payloadtype != 2 /* TDLS_RFTYPE */ || 27078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tf->category != WLAN_ACTION_TDLS) { 27088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "TDLS: Invalid frame - payloadtype=%u " 27098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "category=%u action=%u", 27108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tf->payloadtype, tf->category, tf->action); 27118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 27128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 27138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 27148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (tf->action) { 27158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WLAN_TDLS_SETUP_REQUEST: 27168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_process_tpk_m1(sm, src_addr, buf, len); 27178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 27188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WLAN_TDLS_SETUP_RESPONSE: 27198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_process_tpk_m2(sm, src_addr, buf, len); 27208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 27218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WLAN_TDLS_SETUP_CONFIRM: 27228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_process_tpk_m3(sm, src_addr, buf, len); 27238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 27248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WLAN_TDLS_TEARDOWN: 27258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_recv_teardown(sm, src_addr, buf, len); 27268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 27271f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt case WLAN_TDLS_DISCOVERY_REQUEST: 27281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_tdls_process_discovery_request(sm, src_addr, buf, len); 27291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt break; 27308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 27318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Kernel code will process remaining frames */ 27328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Ignore TDLS frame action code %u", 27338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tf->action); 27348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 27358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 27368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 27378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 27388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 27398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 27408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_init - Initialize driver interface parameters for TDLS 27418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @wpa_s: Pointer to wpa_supplicant data 27428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: 0 on success, -1 on failure 27438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 27448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This function is called to initialize driver interface parameters for TDLS. 27458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_drv_init() must have been called before this function to initialize the 27468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * driver interface. 27478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 27488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_tdls_init(struct wpa_sm *sm) 27498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 27508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) 27518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 27528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 275304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt sm->l2_tdls = l2_packet_init(sm->bridge_ifname ? sm->bridge_ifname : 275404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt sm->ifname, 275504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt sm->own_addr, 27568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ETH_P_80211_ENCAP, wpa_supplicant_rx_tdls, 27578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm, 0); 27588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->l2_tdls == NULL) { 27598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "TDLS: Failed to open l2_packet " 27608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "connection"); 27618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 27628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 27638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 27641f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* 27651f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * Drivers that support TDLS but don't implement the get_capa callback 27661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * are assumed to perform everything internally 27671f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt */ 27681f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wpa_sm_tdls_get_capa(sm, &sm->tdls_supported, 27696c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt &sm->tdls_external_setup, 27706c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt &sm->tdls_chan_switch) < 0) { 27711f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt sm->tdls_supported = 1; 27721f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt sm->tdls_external_setup = 0; 27731f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 27741f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 27751f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS operation%s supported by " 27761f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt "driver", sm->tdls_supported ? "" : " not"); 27771f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Driver uses %s link setup", 27781f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt sm->tdls_external_setup ? "external" : "internal"); 27796c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Driver %s TDLS channel switching", 27806c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt sm->tdls_chan_switch ? "supports" : "does not support"); 27811f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 27828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 27838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 27848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 27858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2786f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidtvoid wpa_tdls_teardown_peers(struct wpa_sm *sm) 2787f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt{ 2788d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt struct wpa_tdls_peer *peer, *tmp; 2789f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2790ff787d557db719adea0fdf2679667500c65cf74dDmitry Shmidt if (!sm) 2791ff787d557db719adea0fdf2679667500c65cf74dDmitry Shmidt return; 2792f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt peer = sm->tdls; 2793f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2794f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Tear down peers"); 2795f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2796f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt while (peer) { 2797d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt tmp = peer->next; 2798f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Tear down peer " MACSTR, 2799f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt MAC2STR(peer->addr)); 2800f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (sm->tdls_external_setup) 2801b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidt wpa_tdls_do_teardown(sm, peer, 2802b58836ed5520bf4b769f76ef7dcb802af8c900b8Dmitry Shmidt WLAN_REASON_DEAUTH_LEAVING); 2803f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt else 2804f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_sm_tdls_oper(sm, TDLS_TEARDOWN, peer->addr); 2805f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2806d30ac604c9f6da71a0dd7f46d25be05a2a62cfbbDmitry Shmidt peer = tmp; 2807f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 2808f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt} 2809f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 2810f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 28118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_tdls_remove_peers(struct wpa_sm *sm) 28128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 28138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_tdls_peer *peer, *tmp; 28148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer = sm->tdls; 28168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (peer) { 28188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 28198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tmp = peer->next; 28208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wpa_sm_tdls_oper(sm, TDLS_DISABLE_LINK, peer->addr); 28218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Remove peer " MACSTR " (res=%d)", 28228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(peer->addr), res); 28238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_peer_free(sm, peer); 28248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer = tmp; 28258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 28268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 28278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 28308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_tdls_deinit - Deinitialize driver interface parameters for TDLS 28318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 28328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This function is called to recover driver interface parameters for TDLS 28338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * and frees resources allocated for it. 28348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 28358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_deinit(struct wpa_sm *sm) 28368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 28378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) 28388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 28398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->l2_tdls) 28418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt l2_packet_deinit(sm->l2_tdls); 28428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->l2_tdls = NULL; 28438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_remove_peers(sm); 28458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 28468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_assoc(struct wpa_sm *sm) 28498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 28508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Remove peers on association"); 28518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_remove_peers(sm); 28528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 28538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_disassoc(struct wpa_sm *sm) 28568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 28578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Remove peers on disassociation"); 28588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_tdls_remove_peers(sm); 28598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 28608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28626c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidtstatic int wpa_tdls_prohibited(struct wpa_eapol_ie_parse *elems) 28638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 28646c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt /* bit 38 - TDLS Prohibited */ 28656c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return !!(elems->ext_capab[2 + 4] & 0x40); 28666c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt} 28678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28696c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidtstatic int wpa_tdls_chan_switch_prohibited(struct wpa_eapol_ie_parse *elems) 28706c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt{ 28716c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt /* bit 39 - TDLS Channel Switch Prohibited */ 28726c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return !!(elems->ext_capab[2 + 4] & 0x80); 28738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 28748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_ap_ies(struct wpa_sm *sm, const u8 *ies, size_t len) 28778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 28786c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt struct wpa_eapol_ie_parse elems; 28796c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 28806c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt sm->tdls_prohibited = 0; 28816c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt sm->tdls_chan_switch_prohibited = 0; 28826c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 28836c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (ies == NULL || wpa_supplicant_parse_ies(ies, len, &elems) < 0 || 28846c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt elems.ext_capab == NULL || elems.ext_capab_len < 2 + 5) 28856c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return; 28866c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 28876c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt sm->tdls_prohibited = wpa_tdls_prohibited(&elems); 28888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS is %s in the target BSS", 28898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->tdls_prohibited ? "prohibited" : "allowed"); 28906c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt sm->tdls_chan_switch_prohibited = 28916c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_tdls_chan_switch_prohibited(&elems); 28926c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS channel switch %s in the target BSS", 28936c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt sm->tdls_chan_switch_prohibited ? "prohibited" : "allowed"); 28948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 28958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 28978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_assoc_resp_ies(struct wpa_sm *sm, const u8 *ies, size_t len) 28988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 28996c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt struct wpa_eapol_ie_parse elems; 29006c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29016c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (ies == NULL || wpa_supplicant_parse_ies(ies, len, &elems) < 0 || 29026c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt elems.ext_capab == NULL || elems.ext_capab_len < 2 + 5) 29036c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return; 29046c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29056c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (!sm->tdls_prohibited && wpa_tdls_prohibited(&elems)) { 29068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: TDLS prohibited based on " 29078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(Re)Association Response IEs"); 29088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->tdls_prohibited = 1; 29098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 29106c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29116c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (!sm->tdls_chan_switch_prohibited && 29126c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_tdls_chan_switch_prohibited(&elems)) { 29136c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_printf(MSG_DEBUG, 29146c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt "TDLS: TDLS channel switch prohibited based on (Re)Association Response IEs"); 29156c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt sm->tdls_chan_switch_prohibited = 1; 29166c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt } 29178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 29188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 29198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 29208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_tdls_enable(struct wpa_sm *sm, int enabled) 29218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 29228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: %s", enabled ? "enabled" : "disabled"); 29238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->tdls_disabled = !enabled; 29248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 29251f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 29261f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt 29271f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidtint wpa_tdls_is_external_setup(struct wpa_sm *sm) 29281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt{ 29291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt return sm->tdls_external_setup; 29301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt} 29316c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29326c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29336c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidtint wpa_tdls_enable_chan_switch(struct wpa_sm *sm, const u8 *addr, 29346c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt u8 oper_class, 29356c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt struct hostapd_freq_params *freq_params) 29366c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt{ 29376c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt struct wpa_tdls_peer *peer; 29386c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt int ret; 29396c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29406c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 29416c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return -1; 29426c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29436c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (!sm->tdls_chan_switch) { 29446c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_printf(MSG_DEBUG, 29456c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt "TDLS: Channel switching not supported by the driver"); 29466c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return -1; 29476c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt } 29486c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29496c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (sm->tdls_chan_switch_prohibited) { 29506c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_printf(MSG_DEBUG, 29516c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt "TDLS: Channel switching is prohibited in this BSS - reject request to switch channel"); 29526c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return -1; 29536c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt } 29546c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29556c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 29566c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 29576c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt break; 29586c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt } 29596c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29606c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (peer == NULL || !peer->tpk_success) { 29616c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_printf(MSG_ERROR, "TDLS: Peer " MACSTR 29626c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt " not found for channel switching", MAC2STR(addr)); 29636c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return -1; 29646c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt } 29656c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29666c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (peer->chan_switch_enabled) { 29676c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_printf(MSG_DEBUG, "TDLS: Peer " MACSTR 29686c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt " already has channel switching enabled", 29696c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt MAC2STR(addr)); 29706c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return 0; 29716c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt } 29726c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29736c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt ret = wpa_sm_tdls_enable_channel_switch(sm, peer->addr, 29746c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt oper_class, freq_params); 29756c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (!ret) 29766c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt peer->chan_switch_enabled = 1; 29776c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29786c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return ret; 29796c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt} 29806c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29816c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29826c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidtint wpa_tdls_disable_chan_switch(struct wpa_sm *sm, const u8 *addr) 29836c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt{ 29846c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt struct wpa_tdls_peer *peer; 29856c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29866c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (sm->tdls_disabled || !sm->tdls_supported) 29876c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return -1; 29886c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29896c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt for (peer = sm->tdls; peer; peer = peer->next) { 29906c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (os_memcmp(peer->addr, addr, ETH_ALEN) == 0) 29916c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt break; 29926c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt } 29936c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 29946c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt if (!peer || !peer->chan_switch_enabled) { 29956c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_printf(MSG_ERROR, "TDLS: Channel switching not enabled for " 29966c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt MACSTR, MAC2STR(addr)); 29976c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return -1; 29986c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt } 29996c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 30006c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt /* ignore the return value */ 30016c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt wpa_sm_tdls_disable_channel_switch(sm, peer->addr); 30026c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt 30036c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt peer->chan_switch_enabled = 0; 30046c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt return 0; 30056c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt} 3006