Lines Matching full:smp
37 #include "smp.h"
54 #define SMP_ALLOW_CMD(smp, code) set_bit(code, &smp->allow_cmd) argument
100 u8 preq[7]; /* SMP Pairing Request */
101 u8 prsp[7]; /* SMP Pairing Response */
102 u8 prnd[16]; /* SMP Pairing Random (local) */
103 u8 rrnd[16]; /* SMP Pairing Random (remote) */
104 u8 pcnf[16]; /* SMP Pairing Confirm */
105 u8 tk[16]; /* SMP Temporary Key */
133 /* These debug key values are defined in the SMP section of the core
164 /* The following functions map to the LE SC SMP crypto functions
236 * the SMP section of the Bluetooth core specification. In ASCII in smp_f5()
370 /* The following functions map to the legacy SMP crypto functions e, c1,
540 struct smp_dev *smp; in smp_generate_oob() local
546 smp = chan->data; in smp_generate_oob()
550 err = set_ecdh_privkey(smp->tfm_ecdh, debug_sk); in smp_generate_oob()
553 memcpy(smp->local_pk, debug_pk, 64); in smp_generate_oob()
554 smp->debug_key = true; in smp_generate_oob()
558 err = generate_ecdh_keys(smp->tfm_ecdh, smp->local_pk); in smp_generate_oob()
565 if (crypto_memneq(smp->local_pk, debug_pk, 64)) in smp_generate_oob()
568 smp->debug_key = false; in smp_generate_oob()
571 SMP_DBG("OOB Public Key X: %32phN", smp->local_pk); in smp_generate_oob()
572 SMP_DBG("OOB Public Key Y: %32phN", smp->local_pk + 32); in smp_generate_oob()
574 get_random_bytes(smp->local_rand, 16); in smp_generate_oob()
576 err = smp_f4(smp->tfm_cmac, smp->local_pk, smp->local_pk, in smp_generate_oob()
577 smp->local_rand, 0, hash); in smp_generate_oob()
581 memcpy(rand, smp->local_rand, 16); in smp_generate_oob()
583 smp->local_oob = true; in smp_generate_oob()
590 struct l2cap_chan *chan = conn->smp; in smp_send_cmd()
591 struct smp_chan *smp; in smp_send_cmd() local
615 smp = chan->data; in smp_send_cmd()
617 cancel_delayed_work_sync(&smp->security_timer); in smp_send_cmd()
618 schedule_delayed_work(&smp->security_timer, SMP_TIMEOUT); in smp_send_cmd()
650 struct l2cap_chan *chan = conn->smp; in build_pairing_cmd()
651 struct smp_chan *smp = chan->data; in build_pairing_cmd() local
688 set_bit(SMP_FLAG_REMOTE_OOB, &smp->flags); in build_pairing_cmd()
690 memcpy(smp->rr, oob_data->rand256, 16); in build_pairing_cmd()
691 memcpy(smp->pcnf, oob_data->hash256, 16); in build_pairing_cmd()
692 SMP_DBG("OOB Remote Confirmation: %16phN", smp->pcnf); in build_pairing_cmd()
693 SMP_DBG("OOB Remote Random: %16phN", smp->rr); in build_pairing_cmd()
708 smp->remote_key_dist = remote_dist; in build_pairing_cmd()
719 smp->remote_key_dist = rsp->init_key_dist; in build_pairing_cmd()
724 struct l2cap_chan *chan = conn->smp; in check_enc_key_size()
726 struct smp_chan *smp = chan->data; in check_enc_key_size() local
736 smp->enc_key_size = max_key_size; in check_enc_key_size()
743 struct l2cap_chan *chan = conn->smp; in smp_chan_destroy()
744 struct smp_chan *smp = chan->data; in smp_chan_destroy() local
748 BUG_ON(!smp); in smp_chan_destroy()
750 cancel_delayed_work_sync(&smp->security_timer); in smp_chan_destroy()
752 complete = test_bit(SMP_FLAG_COMPLETE, &smp->flags); in smp_chan_destroy()
755 kfree_sensitive(smp->csrk); in smp_chan_destroy()
756 kfree_sensitive(smp->responder_csrk); in smp_chan_destroy()
757 kfree_sensitive(smp->link_key); in smp_chan_destroy()
759 crypto_free_shash(smp->tfm_cmac); in smp_chan_destroy()
760 crypto_free_kpp(smp->tfm_ecdh); in smp_chan_destroy()
765 if (smp->ltk && smp->ltk->type == SMP_LTK_P256_DEBUG && in smp_chan_destroy()
767 list_del_rcu(&smp->ltk->list); in smp_chan_destroy()
768 kfree_rcu(smp->ltk, rcu); in smp_chan_destroy()
769 smp->ltk = NULL; in smp_chan_destroy()
774 if (smp->ltk) { in smp_chan_destroy()
775 list_del_rcu(&smp->ltk->list); in smp_chan_destroy()
776 kfree_rcu(smp->ltk, rcu); in smp_chan_destroy()
779 if (smp->responder_ltk) { in smp_chan_destroy()
780 list_del_rcu(&smp->responder_ltk->list); in smp_chan_destroy()
781 kfree_rcu(smp->responder_ltk, rcu); in smp_chan_destroy()
784 if (smp->remote_irk) { in smp_chan_destroy()
785 list_del_rcu(&smp->remote_irk->list); in smp_chan_destroy()
786 kfree_rcu(smp->remote_irk, rcu); in smp_chan_destroy()
791 kfree_sensitive(smp); in smp_chan_destroy()
798 struct l2cap_chan *chan = conn->smp; in smp_failure()
834 static u8 get_auth_method(struct smp_chan *smp, u8 local_io, u8 remote_io) in get_auth_method() argument
843 if (test_bit(SMP_FLAG_SC, &smp->flags)) in get_auth_method()
853 struct l2cap_chan *chan = conn->smp; in tk_request()
854 struct smp_chan *smp = chan->data; in tk_request() local
859 memset(smp->tk, 0, sizeof(smp->tk)); in tk_request()
860 clear_bit(SMP_FLAG_TK_VALID, &smp->flags); in tk_request()
872 smp->method = JUST_CFM; in tk_request()
874 smp->method = get_auth_method(smp, local_io, remote_io); in tk_request()
877 if (smp->method == JUST_CFM && test_bit(SMP_FLAG_INITIATOR, in tk_request()
878 &smp->flags)) in tk_request()
879 smp->method = JUST_WORKS; in tk_request()
882 if (smp->method == JUST_CFM && in tk_request()
884 smp->method = JUST_WORKS; in tk_request()
888 if (smp->method == JUST_WORKS) { in tk_request()
895 set_bit(SMP_FLAG_WAIT_USER, &smp->flags); in tk_request()
902 if (test_bit(SMP_FLAG_SC, &smp->flags)) in tk_request()
906 if (smp->method != JUST_CFM) { in tk_request()
907 set_bit(SMP_FLAG_MITM_AUTH, &smp->flags); in tk_request()
915 if (smp->method == OVERLAP) { in tk_request()
917 smp->method = CFM_PASSKEY; in tk_request()
919 smp->method = REQ_PASSKEY; in tk_request()
923 if (smp->method == CFM_PASSKEY) { in tk_request()
924 memset(smp->tk, 0, sizeof(smp->tk)); in tk_request()
927 put_unaligned_le32(passkey, smp->tk); in tk_request()
929 set_bit(SMP_FLAG_TK_VALID, &smp->flags); in tk_request()
932 if (smp->method == REQ_PASSKEY) in tk_request()
935 else if (smp->method == JUST_CFM) in tk_request()
947 static u8 smp_confirm(struct smp_chan *smp) in smp_confirm() argument
949 struct l2cap_conn *conn = smp->conn; in smp_confirm()
955 ret = smp_c1(smp->tk, smp->prnd, smp->preq, smp->prsp, in smp_confirm()
962 clear_bit(SMP_FLAG_CFM_PENDING, &smp->flags); in smp_confirm()
964 smp_send_cmd(smp->conn, SMP_CMD_PAIRING_CONFIRM, sizeof(cp), &cp); in smp_confirm()
967 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_CONFIRM); in smp_confirm()
969 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RANDOM); in smp_confirm()
974 static u8 smp_random(struct smp_chan *smp) in smp_random() argument
976 struct l2cap_conn *conn = smp->conn; in smp_random()
984 ret = smp_c1(smp->tk, smp->rrnd, smp->preq, smp->prsp, in smp_random()
990 if (crypto_memneq(smp->pcnf, confirm, sizeof(smp->pcnf))) { in smp_random()
1001 smp_s1(smp->tk, smp->rrnd, smp->prnd, stk); in smp_random()
1006 hci_le_start_enc(hcon, ediv, rand, stk, smp->enc_key_size); in smp_random()
1007 hcon->enc_key_size = smp->enc_key_size; in smp_random()
1014 smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(smp->prnd), in smp_random()
1015 smp->prnd); in smp_random()
1017 smp_s1(smp->tk, smp->prnd, smp->rrnd, stk); in smp_random()
1029 SMP_STK, auth, stk, smp->enc_key_size, ediv, rand); in smp_random()
1037 struct l2cap_chan *chan = conn->smp; in smp_notify_keys()
1038 struct smp_chan *smp = chan->data; in smp_notify_keys() local
1041 struct smp_cmd_pairing *req = (void *) &smp->preq[1]; in smp_notify_keys()
1042 struct smp_cmd_pairing *rsp = (void *) &smp->prsp[1]; in smp_notify_keys()
1060 if (smp->remote_irk) { in smp_notify_keys()
1061 mgmt_new_irk(hdev, smp->remote_irk, persistent); in smp_notify_keys()
1068 bacpy(&hcon->dst, &smp->remote_irk->bdaddr); in smp_notify_keys()
1069 hcon->dst_type = smp->remote_irk->addr_type; in smp_notify_keys()
1074 if (smp->csrk) { in smp_notify_keys()
1075 smp->csrk->bdaddr_type = hcon->dst_type; in smp_notify_keys()
1076 bacpy(&smp->csrk->bdaddr, &hcon->dst); in smp_notify_keys()
1077 mgmt_new_csrk(hdev, smp->csrk, persistent); in smp_notify_keys()
1080 if (smp->responder_csrk) { in smp_notify_keys()
1081 smp->responder_csrk->bdaddr_type = hcon->dst_type; in smp_notify_keys()
1082 bacpy(&smp->responder_csrk->bdaddr, &hcon->dst); in smp_notify_keys()
1083 mgmt_new_csrk(hdev, smp->responder_csrk, persistent); in smp_notify_keys()
1086 if (smp->ltk) { in smp_notify_keys()
1087 smp->ltk->bdaddr_type = hcon->dst_type; in smp_notify_keys()
1088 bacpy(&smp->ltk->bdaddr, &hcon->dst); in smp_notify_keys()
1089 mgmt_new_ltk(hdev, smp->ltk, persistent); in smp_notify_keys()
1092 if (smp->responder_ltk) { in smp_notify_keys()
1093 smp->responder_ltk->bdaddr_type = hcon->dst_type; in smp_notify_keys()
1094 bacpy(&smp->responder_ltk->bdaddr, &hcon->dst); in smp_notify_keys()
1095 mgmt_new_ltk(hdev, smp->responder_ltk, persistent); in smp_notify_keys()
1098 if (smp->link_key) { in smp_notify_keys()
1102 if (test_bit(SMP_FLAG_DEBUG_KEY, &smp->flags)) in smp_notify_keys()
1109 key = hci_add_link_key(hdev, smp->conn->hcon, &hcon->dst, in smp_notify_keys()
1110 smp->link_key, type, 0, &persistent); in smp_notify_keys()
1126 static void sc_add_ltk(struct smp_chan *smp) in sc_add_ltk() argument
1128 struct hci_conn *hcon = smp->conn->hcon; in sc_add_ltk()
1131 if (test_bit(SMP_FLAG_DEBUG_KEY, &smp->flags)) in sc_add_ltk()
1141 smp->ltk = hci_add_ltk(hcon->hdev, &hcon->dst, hcon->dst_type, in sc_add_ltk()
1142 key_type, auth, smp->tk, smp->enc_key_size, in sc_add_ltk()
1146 static void sc_generate_link_key(struct smp_chan *smp) in sc_generate_link_key() argument
1151 smp->link_key = kzalloc(16, GFP_KERNEL); in sc_generate_link_key()
1152 if (!smp->link_key) in sc_generate_link_key()
1155 if (test_bit(SMP_FLAG_CT2, &smp->flags)) { in sc_generate_link_key()
1159 if (smp_h7(smp->tfm_cmac, smp->tk, salt, smp->link_key)) { in sc_generate_link_key()
1160 kfree_sensitive(smp->link_key); in sc_generate_link_key()
1161 smp->link_key = NULL; in sc_generate_link_key()
1168 if (smp_h6(smp->tfm_cmac, smp->tk, tmp1, smp->link_key)) { in sc_generate_link_key()
1169 kfree_sensitive(smp->link_key); in sc_generate_link_key()
1170 smp->link_key = NULL; in sc_generate_link_key()
1175 if (smp_h6(smp->tfm_cmac, smp->link_key, lebr, smp->link_key)) { in sc_generate_link_key()
1176 kfree_sensitive(smp->link_key); in sc_generate_link_key()
1177 smp->link_key = NULL; in sc_generate_link_key()
1182 static void smp_allow_key_dist(struct smp_chan *smp) in smp_allow_key_dist() argument
1188 if (smp->remote_key_dist & SMP_DIST_ENC_KEY) in smp_allow_key_dist()
1189 SMP_ALLOW_CMD(smp, SMP_CMD_ENCRYPT_INFO); in smp_allow_key_dist()
1190 else if (smp->remote_key_dist & SMP_DIST_ID_KEY) in smp_allow_key_dist()
1191 SMP_ALLOW_CMD(smp, SMP_CMD_IDENT_INFO); in smp_allow_key_dist()
1192 else if (smp->remote_key_dist & SMP_DIST_SIGN) in smp_allow_key_dist()
1193 SMP_ALLOW_CMD(smp, SMP_CMD_SIGN_INFO); in smp_allow_key_dist()
1196 static void sc_generate_ltk(struct smp_chan *smp) in sc_generate_ltk() argument
1200 struct hci_conn *hcon = smp->conn->hcon; in sc_generate_ltk()
1211 set_bit(SMP_FLAG_DEBUG_KEY, &smp->flags); in sc_generate_ltk()
1213 if (test_bit(SMP_FLAG_CT2, &smp->flags)) { in sc_generate_ltk()
1217 if (smp_h7(smp->tfm_cmac, key->val, salt, smp->tk)) in sc_generate_ltk()
1223 if (smp_h6(smp->tfm_cmac, key->val, tmp2, smp->tk)) in sc_generate_ltk()
1227 if (smp_h6(smp->tfm_cmac, smp->tk, brle, smp->tk)) in sc_generate_ltk()
1230 sc_add_ltk(smp); in sc_generate_ltk()
1233 static void smp_distribute_keys(struct smp_chan *smp) in smp_distribute_keys() argument
1236 struct l2cap_conn *conn = smp->conn; in smp_distribute_keys()
1243 rsp = (void *) &smp->prsp[1]; in smp_distribute_keys()
1246 if (hcon->out && (smp->remote_key_dist & KEY_DIST_MASK)) { in smp_distribute_keys()
1247 smp_allow_key_dist(smp); in smp_distribute_keys()
1251 req = (void *) &smp->preq[1]; in smp_distribute_keys()
1261 if (test_bit(SMP_FLAG_SC, &smp->flags)) { in smp_distribute_keys()
1263 sc_generate_link_key(smp); in smp_distribute_keys()
1265 sc_generate_ltk(smp); in smp_distribute_keys()
1285 get_random_bytes(enc.ltk, smp->enc_key_size); in smp_distribute_keys()
1286 memset(enc.ltk + smp->enc_key_size, 0, in smp_distribute_keys()
1287 sizeof(enc.ltk) - smp->enc_key_size); in smp_distribute_keys()
1297 smp->enc_key_size, ediv, rand); in smp_distribute_keys()
1298 smp->responder_ltk = ltk; in smp_distribute_keys()
1347 smp->responder_csrk = csrk; in smp_distribute_keys()
1355 if (smp->remote_key_dist & KEY_DIST_MASK) { in smp_distribute_keys()
1356 smp_allow_key_dist(smp); in smp_distribute_keys()
1360 set_bit(SMP_FLAG_COMPLETE, &smp->flags); in smp_distribute_keys()
1368 struct smp_chan *smp = container_of(work, struct smp_chan, in smp_timeout() local
1370 struct l2cap_conn *conn = smp->conn; in smp_timeout()
1380 struct l2cap_chan *chan = conn->smp; in smp_chan_create()
1381 struct smp_chan *smp; in smp_chan_create() local
1383 smp = kzalloc(sizeof(*smp), GFP_ATOMIC); in smp_chan_create()
1384 if (!smp) in smp_chan_create()
1387 smp->tfm_cmac = crypto_alloc_shash("cmac(aes)", 0, 0); in smp_chan_create()
1388 if (IS_ERR(smp->tfm_cmac)) { in smp_chan_create()
1393 smp->tfm_ecdh = crypto_alloc_kpp("ecdh-nist-p256", 0, 0); in smp_chan_create()
1394 if (IS_ERR(smp->tfm_ecdh)) { in smp_chan_create()
1399 smp->conn = conn; in smp_chan_create()
1400 chan->data = smp; in smp_chan_create()
1402 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_FAIL); in smp_chan_create()
1404 INIT_DELAYED_WORK(&smp->security_timer, smp_timeout); in smp_chan_create()
1408 return smp; in smp_chan_create()
1411 crypto_free_shash(smp->tfm_cmac); in smp_chan_create()
1413 kfree_sensitive(smp); in smp_chan_create()
1417 static int sc_mackey_and_ltk(struct smp_chan *smp, u8 mackey[16], u8 ltk[16]) in sc_mackey_and_ltk() argument
1419 struct hci_conn *hcon = smp->conn->hcon; in sc_mackey_and_ltk()
1423 na = smp->prnd; in sc_mackey_and_ltk()
1424 nb = smp->rrnd; in sc_mackey_and_ltk()
1426 na = smp->rrnd; in sc_mackey_and_ltk()
1427 nb = smp->prnd; in sc_mackey_and_ltk()
1435 return smp_f5(smp->tfm_cmac, smp->dhkey, na, nb, a, b, mackey, ltk); in sc_mackey_and_ltk()
1438 static void sc_dhkey_check(struct smp_chan *smp) in sc_dhkey_check() argument
1440 struct hci_conn *hcon = smp->conn->hcon; in sc_dhkey_check()
1453 memcpy(io_cap, &smp->preq[1], 3); in sc_dhkey_check()
1457 memcpy(io_cap, &smp->prsp[1], 3); in sc_dhkey_check()
1462 if (smp->method == REQ_PASSKEY || smp->method == DSP_PASSKEY) in sc_dhkey_check()
1465 if (smp->method == REQ_OOB) in sc_dhkey_check()
1466 memcpy(r, smp->rr, 16); in sc_dhkey_check()
1468 smp_f6(smp->tfm_cmac, smp->mackey, smp->prnd, smp->rrnd, r, io_cap, in sc_dhkey_check()
1471 smp_send_cmd(smp->conn, SMP_CMD_DHKEY_CHECK, sizeof(check), &check); in sc_dhkey_check()
1474 static u8 sc_passkey_send_confirm(struct smp_chan *smp) in sc_passkey_send_confirm() argument
1476 struct l2cap_conn *conn = smp->conn; in sc_passkey_send_confirm()
1481 r = ((hcon->passkey_notify >> smp->passkey_round) & 0x01); in sc_passkey_send_confirm()
1484 get_random_bytes(smp->prnd, sizeof(smp->prnd)); in sc_passkey_send_confirm()
1486 if (smp_f4(smp->tfm_cmac, smp->local_pk, smp->remote_pk, smp->prnd, r, in sc_passkey_send_confirm()
1495 static u8 sc_passkey_round(struct smp_chan *smp, u8 smp_op) in sc_passkey_round() argument
1497 struct l2cap_conn *conn = smp->conn; in sc_passkey_round()
1503 if (smp->passkey_round >= 20) in sc_passkey_round()
1508 r = ((hcon->passkey_notify >> smp->passkey_round) & 0x01); in sc_passkey_round()
1511 if (smp_f4(smp->tfm_cmac, smp->remote_pk, smp->local_pk, in sc_passkey_round()
1512 smp->rrnd, r, cfm)) in sc_passkey_round()
1515 if (crypto_memneq(smp->pcnf, cfm, 16)) in sc_passkey_round()
1518 smp->passkey_round++; in sc_passkey_round()
1520 if (smp->passkey_round == 20) { in sc_passkey_round()
1522 if (sc_mackey_and_ltk(smp, smp->mackey, smp->tk)) in sc_passkey_round()
1531 sizeof(smp->prnd), smp->prnd); in sc_passkey_round()
1532 if (smp->passkey_round == 20) in sc_passkey_round()
1533 SMP_ALLOW_CMD(smp, SMP_CMD_DHKEY_CHECK); in sc_passkey_round()
1535 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_CONFIRM); in sc_passkey_round()
1540 if (smp->passkey_round != 20) in sc_passkey_round()
1541 return sc_passkey_round(smp, 0); in sc_passkey_round()
1544 sc_dhkey_check(smp); in sc_passkey_round()
1545 SMP_ALLOW_CMD(smp, SMP_CMD_DHKEY_CHECK); in sc_passkey_round()
1550 if (test_bit(SMP_FLAG_WAIT_USER, &smp->flags)) { in sc_passkey_round()
1551 set_bit(SMP_FLAG_CFM_PENDING, &smp->flags); in sc_passkey_round()
1555 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RANDOM); in sc_passkey_round()
1559 sizeof(smp->prnd), smp->prnd); in sc_passkey_round()
1563 return sc_passkey_send_confirm(smp); in sc_passkey_round()
1572 smp->passkey_round + 1); in sc_passkey_round()
1574 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_CONFIRM); in sc_passkey_round()
1576 return sc_passkey_send_confirm(smp); in sc_passkey_round()
1582 static int sc_user_reply(struct smp_chan *smp, u16 mgmt_op, __le32 passkey) in sc_user_reply() argument
1584 struct l2cap_conn *conn = smp->conn; in sc_user_reply()
1588 clear_bit(SMP_FLAG_WAIT_USER, &smp->flags); in sc_user_reply()
1592 smp_failure(smp->conn, SMP_PASSKEY_ENTRY_FAILED); in sc_user_reply()
1595 smp_failure(smp->conn, SMP_NUMERIC_COMP_FAILED); in sc_user_reply()
1599 smp->passkey_round = 0; in sc_user_reply()
1601 if (test_and_clear_bit(SMP_FLAG_CFM_PENDING, &smp->flags)) in sc_user_reply()
1606 if (sc_passkey_round(smp, smp_op)) in sc_user_reply()
1614 sc_dhkey_check(smp); in sc_user_reply()
1615 SMP_ALLOW_CMD(smp, SMP_CMD_DHKEY_CHECK); in sc_user_reply()
1616 } else if (test_and_clear_bit(SMP_FLAG_DHKEY_PENDING, &smp->flags)) { in sc_user_reply()
1617 sc_dhkey_check(smp); in sc_user_reply()
1618 sc_add_ltk(smp); in sc_user_reply()
1628 struct smp_chan *smp; in smp_user_confirm_reply() local
1637 chan = conn->smp; in smp_user_confirm_reply()
1647 smp = chan->data; in smp_user_confirm_reply()
1649 if (test_bit(SMP_FLAG_SC, &smp->flags)) { in smp_user_confirm_reply()
1650 err = sc_user_reply(smp, mgmt_op, passkey); in smp_user_confirm_reply()
1657 memset(smp->tk, 0, sizeof(smp->tk)); in smp_user_confirm_reply()
1659 put_unaligned_le32(value, smp->tk); in smp_user_confirm_reply()
1662 set_bit(SMP_FLAG_TK_VALID, &smp->flags); in smp_user_confirm_reply()
1678 if (test_bit(SMP_FLAG_CFM_PENDING, &smp->flags)) { in smp_user_confirm_reply()
1679 u8 rsp = smp_confirm(smp); in smp_user_confirm_reply()
1689 static void build_bredr_pairing_cmd(struct smp_chan *smp, in build_bredr_pairing_cmd() argument
1693 struct l2cap_conn *conn = smp->conn; in build_bredr_pairing_cmd()
1716 smp->remote_key_dist = remote_dist; in build_bredr_pairing_cmd()
1728 smp->remote_key_dist = rsp->init_key_dist; in build_bredr_pairing_cmd()
1734 struct l2cap_chan *chan = conn->smp; in smp_cmd_pairing_req()
1736 struct smp_chan *smp; in smp_cmd_pairing_req() local
1749 smp = smp_chan_create(conn); in smp_cmd_pairing_req()
1751 smp = chan->data; in smp_cmd_pairing_req()
1753 if (!smp) in smp_cmd_pairing_req()
1766 smp->preq[0] = SMP_CMD_PAIRING_REQ; in smp_cmd_pairing_req()
1767 memcpy(&smp->preq[1], req, sizeof(*req)); in smp_cmd_pairing_req()
1775 set_bit(SMP_FLAG_LOCAL_OOB, &smp->flags); in smp_cmd_pairing_req()
1777 /* SMP over BR/EDR requires special treatment */ in smp_cmd_pairing_req()
1784 set_bit(SMP_FLAG_SC, &smp->flags); in smp_cmd_pairing_req()
1786 build_bredr_pairing_cmd(smp, req, &rsp); in smp_cmd_pairing_req()
1789 set_bit(SMP_FLAG_CT2, &smp->flags); in smp_cmd_pairing_req()
1796 smp->remote_key_dist &= ~SMP_SC_NO_DIST; in smp_cmd_pairing_req()
1798 smp->prsp[0] = SMP_CMD_PAIRING_RSP; in smp_cmd_pairing_req()
1799 memcpy(&smp->prsp[1], &rsp, sizeof(rsp)); in smp_cmd_pairing_req()
1802 smp_distribute_keys(smp); in smp_cmd_pairing_req()
1809 set_bit(SMP_FLAG_SC, &smp->flags); in smp_cmd_pairing_req()
1812 set_bit(SMP_FLAG_CT2, &smp->flags); in smp_cmd_pairing_req()
1827 method = get_auth_method(smp, conn->hcon->io_capability, in smp_cmd_pairing_req()
1837 get_random_bytes(smp->prnd, sizeof(smp->prnd)); in smp_cmd_pairing_req()
1839 smp->prsp[0] = SMP_CMD_PAIRING_RSP; in smp_cmd_pairing_req()
1840 memcpy(&smp->prsp[1], &rsp, sizeof(rsp)); in smp_cmd_pairing_req()
1844 clear_bit(SMP_FLAG_INITIATOR, &smp->flags); in smp_cmd_pairing_req()
1851 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_CONFIRM); in smp_cmd_pairing_req()
1853 if (test_bit(SMP_FLAG_SC, &smp->flags)) { in smp_cmd_pairing_req()
1854 SMP_ALLOW_CMD(smp, SMP_CMD_PUBLIC_KEY); in smp_cmd_pairing_req()
1856 smp->remote_key_dist &= ~SMP_SC_NO_DIST; in smp_cmd_pairing_req()
1869 static u8 sc_send_public_key(struct smp_chan *smp) in sc_send_public_key() argument
1871 struct hci_dev *hdev = smp->conn->hcon->hdev; in sc_send_public_key()
1875 if (test_bit(SMP_FLAG_LOCAL_OOB, &smp->flags)) { in sc_send_public_key()
1884 memcpy(smp->local_pk, smp_dev->local_pk, 64); in sc_send_public_key()
1885 memcpy(smp->lr, smp_dev->local_rand, 16); in sc_send_public_key()
1888 set_bit(SMP_FLAG_DEBUG_KEY, &smp->flags); in sc_send_public_key()
1895 if (set_ecdh_privkey(smp->tfm_ecdh, debug_sk)) in sc_send_public_key()
1897 memcpy(smp->local_pk, debug_pk, 64); in sc_send_public_key()
1898 set_bit(SMP_FLAG_DEBUG_KEY, &smp->flags); in sc_send_public_key()
1902 if (generate_ecdh_keys(smp->tfm_ecdh, smp->local_pk)) in sc_send_public_key()
1908 if (crypto_memneq(smp->local_pk, debug_pk, 64)) in sc_send_public_key()
1914 SMP_DBG("Local Public Key X: %32phN", smp->local_pk); in sc_send_public_key()
1915 SMP_DBG("Local Public Key Y: %32phN", smp->local_pk + 32); in sc_send_public_key()
1917 smp_send_cmd(smp->conn, SMP_CMD_PUBLIC_KEY, 64, smp->local_pk); in sc_send_public_key()
1925 struct l2cap_chan *chan = conn->smp; in smp_cmd_pairing_rsp()
1926 struct smp_chan *smp = chan->data; in smp_cmd_pairing_rsp() local
1941 req = (void *) &smp->preq[1]; in smp_cmd_pairing_rsp()
1957 set_bit(SMP_FLAG_LOCAL_OOB, &smp->flags); in smp_cmd_pairing_rsp()
1959 smp->prsp[0] = SMP_CMD_PAIRING_RSP; in smp_cmd_pairing_rsp()
1960 memcpy(&smp->prsp[1], rsp, sizeof(*rsp)); in smp_cmd_pairing_rsp()
1965 smp->remote_key_dist &= rsp->resp_key_dist; in smp_cmd_pairing_rsp()
1968 set_bit(SMP_FLAG_CT2, &smp->flags); in smp_cmd_pairing_rsp()
1973 smp->remote_key_dist &= ~SMP_SC_NO_DIST; in smp_cmd_pairing_rsp()
1974 smp_distribute_keys(smp); in smp_cmd_pairing_rsp()
1979 set_bit(SMP_FLAG_SC, &smp->flags); in smp_cmd_pairing_rsp()
1987 method = get_auth_method(smp, req->io_capability, in smp_cmd_pairing_rsp()
1993 get_random_bytes(smp->prnd, sizeof(smp->prnd)); in smp_cmd_pairing_rsp()
1998 smp->remote_key_dist &= rsp->resp_key_dist; in smp_cmd_pairing_rsp()
2000 if (test_bit(SMP_FLAG_SC, &smp->flags)) { in smp_cmd_pairing_rsp()
2002 smp->remote_key_dist &= ~SMP_SC_NO_DIST; in smp_cmd_pairing_rsp()
2003 SMP_ALLOW_CMD(smp, SMP_CMD_PUBLIC_KEY); in smp_cmd_pairing_rsp()
2004 return sc_send_public_key(smp); in smp_cmd_pairing_rsp()
2013 set_bit(SMP_FLAG_CFM_PENDING, &smp->flags); in smp_cmd_pairing_rsp()
2016 if (test_bit(SMP_FLAG_TK_VALID, &smp->flags)) in smp_cmd_pairing_rsp()
2017 return smp_confirm(smp); in smp_cmd_pairing_rsp()
2022 static u8 sc_check_confirm(struct smp_chan *smp) in sc_check_confirm() argument
2024 struct l2cap_conn *conn = smp->conn; in sc_check_confirm()
2028 if (smp->method == REQ_PASSKEY || smp->method == DSP_PASSKEY) in sc_check_confirm()
2029 return sc_passkey_round(smp, SMP_CMD_PAIRING_CONFIRM); in sc_check_confirm()
2032 smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(smp->prnd), in sc_check_confirm()
2033 smp->prnd); in sc_check_confirm()
2034 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RANDOM); in sc_check_confirm()
2044 static int fixup_sc_false_positive(struct smp_chan *smp) in fixup_sc_false_positive() argument
2046 struct l2cap_conn *conn = smp->conn; in fixup_sc_false_positive()
2061 bt_dev_err(hdev, "trying to fall back to legacy SMP"); in fixup_sc_false_positive()
2063 req = (void *) &smp->preq[1]; in fixup_sc_false_positive()
2064 rsp = (void *) &smp->prsp[1]; in fixup_sc_false_positive()
2067 smp->remote_key_dist = (req->init_key_dist & rsp->resp_key_dist); in fixup_sc_false_positive()
2072 bt_dev_err(hdev, "failed to fall back to legacy SMP"); in fixup_sc_false_positive()
2076 clear_bit(SMP_FLAG_SC, &smp->flags); in fixup_sc_false_positive()
2083 struct l2cap_chan *chan = conn->smp; in smp_cmd_pairing_confirm()
2084 struct smp_chan *smp = chan->data; in smp_cmd_pairing_confirm() local
2091 if (skb->len < sizeof(smp->pcnf)) in smp_cmd_pairing_confirm()
2094 memcpy(smp->pcnf, skb->data, sizeof(smp->pcnf)); in smp_cmd_pairing_confirm()
2095 skb_pull(skb, sizeof(smp->pcnf)); in smp_cmd_pairing_confirm()
2097 if (test_bit(SMP_FLAG_SC, &smp->flags)) { in smp_cmd_pairing_confirm()
2101 if (test_bit(SMP_FLAG_REMOTE_PK, &smp->flags)) in smp_cmd_pairing_confirm()
2102 return sc_check_confirm(smp); in smp_cmd_pairing_confirm()
2104 bt_dev_err(hdev, "Unexpected SMP Pairing Confirm"); in smp_cmd_pairing_confirm()
2106 ret = fixup_sc_false_positive(smp); in smp_cmd_pairing_confirm()
2112 smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(smp->prnd), in smp_cmd_pairing_confirm()
2113 smp->prnd); in smp_cmd_pairing_confirm()
2114 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RANDOM); in smp_cmd_pairing_confirm()
2118 if (test_bit(SMP_FLAG_TK_VALID, &smp->flags)) in smp_cmd_pairing_confirm()
2119 return smp_confirm(smp); in smp_cmd_pairing_confirm()
2121 set_bit(SMP_FLAG_CFM_PENDING, &smp->flags); in smp_cmd_pairing_confirm()
2128 struct l2cap_chan *chan = conn->smp; in smp_cmd_pairing_random()
2129 struct smp_chan *smp = chan->data; in smp_cmd_pairing_random() local
2137 if (skb->len < sizeof(smp->rrnd)) in smp_cmd_pairing_random()
2140 memcpy(smp->rrnd, skb->data, sizeof(smp->rrnd)); in smp_cmd_pairing_random()
2141 skb_pull(skb, sizeof(smp->rrnd)); in smp_cmd_pairing_random()
2143 if (!test_bit(SMP_FLAG_SC, &smp->flags)) in smp_cmd_pairing_random()
2144 return smp_random(smp); in smp_cmd_pairing_random()
2147 pkax = smp->local_pk; in smp_cmd_pairing_random()
2148 pkbx = smp->remote_pk; in smp_cmd_pairing_random()
2149 na = smp->prnd; in smp_cmd_pairing_random()
2150 nb = smp->rrnd; in smp_cmd_pairing_random()
2152 pkax = smp->remote_pk; in smp_cmd_pairing_random()
2153 pkbx = smp->local_pk; in smp_cmd_pairing_random()
2154 na = smp->rrnd; in smp_cmd_pairing_random()
2155 nb = smp->prnd; in smp_cmd_pairing_random()
2158 if (smp->method == REQ_OOB) { in smp_cmd_pairing_random()
2161 sizeof(smp->prnd), smp->prnd); in smp_cmd_pairing_random()
2162 SMP_ALLOW_CMD(smp, SMP_CMD_DHKEY_CHECK); in smp_cmd_pairing_random()
2167 if (smp->method == REQ_PASSKEY || smp->method == DSP_PASSKEY) in smp_cmd_pairing_random()
2168 return sc_passkey_round(smp, SMP_CMD_PAIRING_RANDOM); in smp_cmd_pairing_random()
2173 err = smp_f4(smp->tfm_cmac, smp->remote_pk, smp->local_pk, in smp_cmd_pairing_random()
2174 smp->rrnd, 0, cfm); in smp_cmd_pairing_random()
2178 if (crypto_memneq(smp->pcnf, cfm, 16)) in smp_cmd_pairing_random()
2181 smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(smp->prnd), in smp_cmd_pairing_random()
2182 smp->prnd); in smp_cmd_pairing_random()
2183 SMP_ALLOW_CMD(smp, SMP_CMD_DHKEY_CHECK); in smp_cmd_pairing_random()
2186 if (smp->method != JUST_WORKS) in smp_cmd_pairing_random()
2206 err = sc_mackey_and_ltk(smp, smp->mackey, smp->tk); in smp_cmd_pairing_random()
2210 if (smp->method == REQ_OOB) { in smp_cmd_pairing_random()
2212 sc_dhkey_check(smp); in smp_cmd_pairing_random()
2213 SMP_ALLOW_CMD(smp, SMP_CMD_DHKEY_CHECK); in smp_cmd_pairing_random()
2218 err = smp_g2(smp->tfm_cmac, pkax, pkbx, na, nb, &passkey); in smp_cmd_pairing_random()
2225 if (smp->method == JUST_WORKS) in smp_cmd_pairing_random()
2233 set_bit(SMP_FLAG_WAIT_USER, &smp->flags); in smp_cmd_pairing_random()
2291 struct smp_chan *smp; in smp_cmd_security_req() local
2327 smp = smp_chan_create(conn); in smp_cmd_security_req()
2328 if (!smp) in smp_cmd_security_req()
2340 smp->preq[0] = SMP_CMD_PAIRING_REQ; in smp_cmd_security_req()
2341 memcpy(&smp->preq[1], &cp, sizeof(cp)); in smp_cmd_security_req()
2344 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RSP); in smp_cmd_security_req()
2353 struct smp_chan *smp; in smp_conn_security() local
2377 chan = conn->smp; in smp_conn_security()
2385 /* If SMP is already in progress ignore this request */ in smp_conn_security()
2391 smp = smp_chan_create(conn); in smp_conn_security()
2392 if (!smp) { in smp_conn_security()
2421 smp->preq[0] = SMP_CMD_PAIRING_REQ; in smp_conn_security()
2422 memcpy(&smp->preq[1], &cp, sizeof(cp)); in smp_conn_security()
2425 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RSP); in smp_conn_security()
2430 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_REQ); in smp_conn_security()
2433 set_bit(SMP_FLAG_INITIATOR, &smp->flags); in smp_conn_security()
2447 struct smp_chan *smp; in smp_cancel_and_remove_pairing() local
2461 chan = conn->smp; in smp_cancel_and_remove_pairing()
2467 smp = chan->data; in smp_cancel_and_remove_pairing()
2468 if (smp) { in smp_cancel_and_remove_pairing()
2471 smp->ltk = NULL; in smp_cancel_and_remove_pairing()
2472 smp->responder_ltk = NULL; in smp_cancel_and_remove_pairing()
2473 smp->remote_irk = NULL; in smp_cancel_and_remove_pairing()
2475 if (test_bit(SMP_FLAG_COMPLETE, &smp->flags)) in smp_cancel_and_remove_pairing()
2491 struct l2cap_chan *chan = conn->smp; in smp_cmd_encrypt_info()
2492 struct smp_chan *smp = chan->data; in smp_cmd_encrypt_info() local
2508 SMP_ALLOW_CMD(smp, SMP_CMD_INITIATOR_IDENT); in smp_cmd_encrypt_info()
2512 memcpy(smp->tk, rp->ltk, sizeof(smp->tk)); in smp_cmd_encrypt_info()
2520 struct l2cap_chan *chan = conn->smp; in smp_cmd_initiator_ident()
2521 struct smp_chan *smp = chan->data; in smp_cmd_initiator_ident() local
2533 smp->remote_key_dist &= ~SMP_DIST_ENC_KEY; in smp_cmd_initiator_ident()
2535 if (smp->remote_key_dist & SMP_DIST_ID_KEY) in smp_cmd_initiator_ident()
2536 SMP_ALLOW_CMD(smp, SMP_CMD_IDENT_INFO); in smp_cmd_initiator_ident()
2537 else if (smp->remote_key_dist & SMP_DIST_SIGN) in smp_cmd_initiator_ident()
2538 SMP_ALLOW_CMD(smp, SMP_CMD_SIGN_INFO); in smp_cmd_initiator_ident()
2544 authenticated, smp->tk, smp->enc_key_size, in smp_cmd_initiator_ident()
2546 smp->ltk = ltk; in smp_cmd_initiator_ident()
2547 if (!(smp->remote_key_dist & KEY_DIST_MASK)) in smp_cmd_initiator_ident()
2548 smp_distribute_keys(smp); in smp_cmd_initiator_ident()
2556 struct l2cap_chan *chan = conn->smp; in smp_cmd_ident_info()
2557 struct smp_chan *smp = chan->data; in smp_cmd_ident_info() local
2573 SMP_ALLOW_CMD(smp, SMP_CMD_IDENT_ADDR_INFO); in smp_cmd_ident_info()
2577 memcpy(smp->irk, info->irk, 16); in smp_cmd_ident_info()
2586 struct l2cap_chan *chan = conn->smp; in smp_cmd_ident_addr_info()
2587 struct smp_chan *smp = chan->data; in smp_cmd_ident_addr_info() local
2597 smp->remote_key_dist &= ~SMP_DIST_ID_KEY; in smp_cmd_ident_addr_info()
2599 if (smp->remote_key_dist & SMP_DIST_SIGN) in smp_cmd_ident_addr_info()
2600 SMP_ALLOW_CMD(smp, SMP_CMD_SIGN_INFO); in smp_cmd_ident_addr_info()
2633 bacpy(&smp->id_addr, &info->bdaddr); in smp_cmd_ident_addr_info()
2634 smp->id_addr_type = info->addr_type; in smp_cmd_ident_addr_info()
2641 smp->remote_irk = hci_add_irk(conn->hcon->hdev, &smp->id_addr, in smp_cmd_ident_addr_info()
2642 smp->id_addr_type, smp->irk, &rpa); in smp_cmd_ident_addr_info()
2645 if (!(smp->remote_key_dist & KEY_DIST_MASK)) in smp_cmd_ident_addr_info()
2646 smp_distribute_keys(smp); in smp_cmd_ident_addr_info()
2654 struct l2cap_chan *chan = conn->smp; in smp_cmd_sign_info()
2655 struct smp_chan *smp = chan->data; in smp_cmd_sign_info() local
2664 smp->remote_key_dist &= ~SMP_DIST_SIGN; in smp_cmd_sign_info()
2676 smp->csrk = csrk; in smp_cmd_sign_info()
2677 smp_distribute_keys(smp); in smp_cmd_sign_info()
2682 static u8 sc_select_method(struct smp_chan *smp) in sc_select_method() argument
2684 struct l2cap_conn *conn = smp->conn; in sc_select_method()
2689 if (test_bit(SMP_FLAG_REMOTE_OOB, &smp->flags) || in sc_select_method()
2690 test_bit(SMP_FLAG_LOCAL_OOB, &smp->flags)) in sc_select_method()
2699 local = (void *) &smp->preq[1]; in sc_select_method()
2700 remote = (void *) &smp->prsp[1]; in sc_select_method()
2702 local = (void *) &smp->prsp[1]; in sc_select_method()
2703 remote = (void *) &smp->preq[1]; in sc_select_method()
2716 method = get_auth_method(smp, local_io, remote_io); in sc_select_method()
2721 if (method == JUST_CFM && test_bit(SMP_FLAG_INITIATOR, &smp->flags)) in sc_select_method()
2731 struct l2cap_chan *chan = conn->smp; in smp_cmd_public_key()
2732 struct smp_chan *smp = chan->data; in smp_cmd_public_key() local
2746 if (!test_bit(SMP_FLAG_DEBUG_KEY, &smp->flags) && in smp_cmd_public_key()
2747 !crypto_memneq(key, smp->local_pk, 64)) { in smp_cmd_public_key()
2752 memcpy(smp->remote_pk, key, 64); in smp_cmd_public_key()
2754 if (test_bit(SMP_FLAG_REMOTE_OOB, &smp->flags)) { in smp_cmd_public_key()
2755 err = smp_f4(smp->tfm_cmac, smp->remote_pk, smp->remote_pk, in smp_cmd_public_key()
2756 smp->rr, 0, cfm.confirm_val); in smp_cmd_public_key()
2760 if (crypto_memneq(cfm.confirm_val, smp->pcnf, 16)) in smp_cmd_public_key()
2768 err = sc_send_public_key(smp); in smp_cmd_public_key()
2773 SMP_DBG("Remote Public Key X: %32phN", smp->remote_pk); in smp_cmd_public_key()
2774 SMP_DBG("Remote Public Key Y: %32phN", smp->remote_pk + 32); in smp_cmd_public_key()
2779 if (test_bit(SMP_FLAG_LOCAL_OOB, &smp->flags)) { in smp_cmd_public_key()
2790 tfm_ecdh = smp->tfm_ecdh; in smp_cmd_public_key()
2793 if (compute_ecdh_secret(tfm_ecdh, smp->remote_pk, smp->dhkey)) in smp_cmd_public_key()
2796 SMP_DBG("DHKey %32phN", smp->dhkey); in smp_cmd_public_key()
2798 set_bit(SMP_FLAG_REMOTE_PK, &smp->flags); in smp_cmd_public_key()
2800 smp->method = sc_select_method(smp); in smp_cmd_public_key()
2802 bt_dev_dbg(hdev, "selected method 0x%02x", smp->method); in smp_cmd_public_key()
2805 if (smp->method == JUST_WORKS || smp->method == JUST_CFM) in smp_cmd_public_key()
2810 if (!crypto_memneq(debug_pk, smp->remote_pk, 64)) in smp_cmd_public_key()
2811 set_bit(SMP_FLAG_DEBUG_KEY, &smp->flags); in smp_cmd_public_key()
2813 if (smp->method == DSP_PASSKEY) { in smp_cmd_public_key()
2818 smp->passkey_round = 0; in smp_cmd_public_key()
2824 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_CONFIRM); in smp_cmd_public_key()
2825 return sc_passkey_round(smp, SMP_CMD_PUBLIC_KEY); in smp_cmd_public_key()
2828 if (smp->method == REQ_OOB) { in smp_cmd_public_key()
2831 sizeof(smp->prnd), smp->prnd); in smp_cmd_public_key()
2833 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RANDOM); in smp_cmd_public_key()
2839 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_CONFIRM); in smp_cmd_public_key()
2841 if (smp->method == REQ_PASSKEY) { in smp_cmd_public_key()
2845 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_CONFIRM); in smp_cmd_public_key()
2846 set_bit(SMP_FLAG_WAIT_USER, &smp->flags); in smp_cmd_public_key()
2856 err = smp_f4(smp->tfm_cmac, smp->local_pk, smp->remote_pk, smp->prnd, in smp_cmd_public_key()
2862 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RANDOM); in smp_cmd_public_key()
2870 struct l2cap_chan *chan = conn->smp; in smp_cmd_dhkey_check()
2872 struct smp_chan *smp = chan->data; in smp_cmd_dhkey_check() local
2890 memcpy(io_cap, &smp->prsp[1], 3); in smp_cmd_dhkey_check()
2894 memcpy(io_cap, &smp->preq[1], 3); in smp_cmd_dhkey_check()
2899 if (smp->method == REQ_PASSKEY || smp->method == DSP_PASSKEY) in smp_cmd_dhkey_check()
2901 else if (smp->method == REQ_OOB) in smp_cmd_dhkey_check()
2902 memcpy(r, smp->lr, 16); in smp_cmd_dhkey_check()
2904 err = smp_f6(smp->tfm_cmac, smp->mackey, smp->rrnd, smp->prnd, r, in smp_cmd_dhkey_check()
2913 if (test_bit(SMP_FLAG_WAIT_USER, &smp->flags)) { in smp_cmd_dhkey_check()
2914 set_bit(SMP_FLAG_DHKEY_PENDING, &smp->flags); in smp_cmd_dhkey_check()
2919 sc_dhkey_check(smp); in smp_cmd_dhkey_check()
2922 sc_add_ltk(smp); in smp_cmd_dhkey_check()
2925 hci_le_start_enc(hcon, 0, 0, smp->tk, smp->enc_key_size); in smp_cmd_dhkey_check()
2926 hcon->enc_key_size = smp->enc_key_size; in smp_cmd_dhkey_check()
2946 struct smp_chan *smp; in smp_sig_channel() local
2961 smp = chan->data; in smp_sig_channel()
2966 if (smp && !test_and_clear_bit(code, &smp->allow_cmd)) in smp_sig_channel()
2972 if (!smp && code != SMP_CMD_PAIRING_REQ && code != SMP_CMD_SECURITY_REQ) in smp_sig_channel()
3049 bt_dev_err(hcon->hdev, "unexpected SMP command 0x%02x from %pMR", in smp_sig_channel()
3064 conn->smp = NULL; in smp_teardown_cb()
3074 struct smp_chan *smp; in bredr_pairing() local
3086 /* Only initiator may initiate SMP over BR/EDR */ in bredr_pairing()
3094 /* BR/EDR must use Secure Connections for SMP */ in bredr_pairing()
3107 /* Remote must support SMP fixed chan for BR/EDR */ in bredr_pairing()
3111 /* Don't bother if SMP is already ongoing */ in bredr_pairing()
3115 smp = smp_chan_create(conn); in bredr_pairing()
3116 if (!smp) { in bredr_pairing()
3117 bt_dev_err(hdev, "unable to create SMP context for BR/EDR"); in bredr_pairing()
3121 set_bit(SMP_FLAG_SC, &smp->flags); in bredr_pairing()
3123 bt_dev_dbg(hdev, "starting SMP over BR/EDR"); in bredr_pairing()
3125 /* Prepare and send the BR/EDR SMP Pairing Request */ in bredr_pairing()
3126 build_bredr_pairing_cmd(smp, &req, NULL); in bredr_pairing()
3128 smp->preq[0] = SMP_CMD_PAIRING_REQ; in bredr_pairing()
3129 memcpy(&smp->preq[1], &req, sizeof(req)); in bredr_pairing()
3132 SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RSP); in bredr_pairing()
3137 struct smp_chan *smp = chan->data; in smp_resume_cb() local
3148 if (!smp) in smp_resume_cb()
3154 cancel_delayed_work(&smp->security_timer); in smp_resume_cb()
3156 smp_distribute_keys(smp); in smp_resume_cb()
3172 conn->smp = chan; in smp_ready_cb()
3186 struct smp_chan *smp = chan->data; in smp_recv_cb() local
3188 if (smp) in smp_recv_cb()
3189 cancel_delayed_work_sync(&smp->security_timer); in smp_recv_cb()
3248 /* Other L2CAP channels may request SMP routines in order to in smp_new_conn_cb()
3249 * change the security level. This means that the SMP channel in smp_new_conn_cb()
3281 struct smp_dev *smp; in smp_add_cid() local
3286 smp = NULL; in smp_add_cid()
3290 smp = kzalloc(sizeof(*smp), GFP_KERNEL); in smp_add_cid()
3291 if (!smp) in smp_add_cid()
3297 kfree_sensitive(smp); in smp_add_cid()
3305 kfree_sensitive(smp); in smp_add_cid()
3309 smp->local_oob = false; in smp_add_cid()
3310 smp->tfm_cmac = tfm_cmac; in smp_add_cid()
3311 smp->tfm_ecdh = tfm_ecdh; in smp_add_cid()
3316 if (smp) { in smp_add_cid()
3317 crypto_free_shash(smp->tfm_cmac); in smp_add_cid()
3318 crypto_free_kpp(smp->tfm_ecdh); in smp_add_cid()
3319 kfree_sensitive(smp); in smp_add_cid()
3324 chan->data = smp; in smp_add_cid()
3357 struct smp_dev *smp; in smp_del_chan() local
3361 smp = chan->data; in smp_del_chan()
3362 if (smp) { in smp_del_chan()
3364 crypto_free_shash(smp->tfm_cmac); in smp_del_chan()
3365 crypto_free_kpp(smp->tfm_ecdh); in smp_del_chan()
3366 kfree_sensitive(smp); in smp_del_chan()
3405 * there is also no need to register any SMP channel. in smp_register()
3799 BT_INFO("SMP test passed in %llu usecs", duration); in run_selftests()