Lines Matching refs:subflow
336 static bool subflow_thmac_valid(struct mptcp_subflow_context *subflow) in subflow_thmac_valid() argument
341 subflow_generate_hmac(subflow->remote_key, subflow->local_key, in subflow_thmac_valid()
342 subflow->remote_nonce, subflow->local_nonce, in subflow_thmac_valid()
347 subflow, subflow->token, in subflow_thmac_valid()
349 (unsigned long long)subflow->thmac); in subflow_thmac_valid()
351 return thmac == subflow->thmac; in subflow_thmac_valid()
356 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in mptcp_subflow_reset() local
357 struct sock *sk = subflow->conn; in mptcp_subflow_reset()
397 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in subflow_finish_connect() local
399 struct sock *parent = subflow->conn; in subflow_finish_connect()
401 subflow->icsk_af_ops->sk_rx_dst_set(sk, skb); in subflow_finish_connect()
404 if (subflow->conn_finished) in subflow_finish_connect()
408 subflow->rel_write_seq = 1; in subflow_finish_connect()
409 subflow->conn_finished = 1; in subflow_finish_connect()
410 subflow->ssn_offset = TCP_SKB_CB(skb)->seq; in subflow_finish_connect()
411 pr_debug("subflow=%p synack seq=%x", subflow, subflow->ssn_offset); in subflow_finish_connect()
414 if (subflow->request_mptcp) { in subflow_finish_connect()
419 pr_fallback(mptcp_sk(subflow->conn)); in subflow_finish_connect()
427 subflow->mp_capable = 1; in subflow_finish_connect()
428 subflow->can_ack = 1; in subflow_finish_connect()
429 subflow->remote_key = mp_opt.sndr_key; in subflow_finish_connect()
430 pr_debug("subflow=%p, remote_key=%llu", subflow, in subflow_finish_connect()
431 subflow->remote_key); in subflow_finish_connect()
435 } else if (subflow->request_join) { in subflow_finish_connect()
439 subflow->reset_reason = MPTCP_RST_EMPTCP; in subflow_finish_connect()
443 subflow->backup = mp_opt.backup; in subflow_finish_connect()
444 subflow->thmac = mp_opt.thmac; in subflow_finish_connect()
445 subflow->remote_nonce = mp_opt.nonce; in subflow_finish_connect()
447 subflow, subflow->thmac, subflow->remote_nonce, in subflow_finish_connect()
448 subflow->backup); in subflow_finish_connect()
450 if (!subflow_thmac_valid(subflow)) { in subflow_finish_connect()
452 subflow->reset_reason = MPTCP_RST_EMPTCP; in subflow_finish_connect()
459 subflow_generate_hmac(subflow->local_key, subflow->remote_key, in subflow_finish_connect()
460 subflow->local_nonce, in subflow_finish_connect()
461 subflow->remote_nonce, in subflow_finish_connect()
463 memcpy(subflow->hmac, hmac, MPTCPOPT_HMAC_LEN); in subflow_finish_connect()
465 subflow->mp_join = 1; in subflow_finish_connect()
482 subflow->reset_transient = 0; in subflow_finish_connect()
492 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in subflow_v4_conn_request() local
494 pr_debug("subflow=%p", subflow); in subflow_v4_conn_request()
516 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in subflow_v6_conn_request() local
518 pr_debug("subflow=%p", subflow); in subflow_v6_conn_request()
617 void mptcp_subflow_fully_established(struct mptcp_subflow_context *subflow, in mptcp_subflow_fully_established() argument
620 struct mptcp_sock *msk = mptcp_sk(subflow->conn); in mptcp_subflow_fully_established()
622 subflow->remote_key = mp_opt->sndr_key; in mptcp_subflow_fully_established()
623 subflow->fully_established = 1; in mptcp_subflow_fully_established()
624 subflow->can_ack = 1; in mptcp_subflow_fully_established()
804 static void dbg_bad_map(struct mptcp_subflow_context *subflow, u32 ssn) in dbg_bad_map() argument
807 ssn, subflow->map_subflow_seq, subflow->map_data_len); in dbg_bad_map()
812 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in skb_is_fully_mapped() local
819 return skb->len - skb_consumed <= subflow->map_data_len - in skb_is_fully_mapped()
820 mptcp_subflow_get_map_offset(subflow); in skb_is_fully_mapped()
825 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in validate_mapping() local
826 u32 ssn = tcp_sk(ssk)->copied_seq - subflow->ssn_offset; in validate_mapping()
828 if (unlikely(before(ssn, subflow->map_subflow_seq))) { in validate_mapping()
832 dbg_bad_map(subflow, ssn); in validate_mapping()
835 if (unlikely(!before(ssn, subflow->map_subflow_seq + in validate_mapping()
836 subflow->map_data_len))) { in validate_mapping()
838 dbg_bad_map(subflow, ssn); in validate_mapping()
847 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in validate_data_csum() local
857 if (subflow->map_csum_len == subflow->map_data_len) in validate_data_csum()
865 delta = subflow->map_data_len - subflow->map_csum_len; in validate_data_csum()
867 seq = tcp_sk(ssk)->copied_seq + subflow->map_csum_len; in validate_data_csum()
878 subflow->map_data_csum = csum_block_add(subflow->map_data_csum, csum, in validate_data_csum()
879 subflow->map_csum_len); in validate_data_csum()
882 subflow->map_csum_len += len; in validate_data_csum()
911 header.data_seq = cpu_to_be64(subflow->map_seq); in validate_data_csum()
912 header.subflow_seq = htonl(subflow->map_subflow_seq); in validate_data_csum()
913 header.data_len = htons(subflow->map_data_len + subflow->map_data_fin); in validate_data_csum()
916 csum = csum_partial(&header, sizeof(header), subflow->map_data_csum); in validate_data_csum()
919 subflow->send_mp_fail = 1; in validate_data_csum()
921 return subflow->mp_join ? MAPPING_INVALID : MAPPING_DUMMY; in validate_data_csum()
930 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in get_mapping_status() local
946 if (!subflow->map_valid && !skb->len) { in get_mapping_status()
960 if (!subflow->map_valid) in get_mapping_status()
979 if (subflow->map_valid) { in get_mapping_status()
1012 WRITE_ONCE(mptcp_sk(subflow->conn)->use_64bit_ack, !!mpext->dsn64); in get_mapping_status()
1014 if (subflow->map_valid) { in get_mapping_status()
1016 if (subflow->map_seq == map_seq && in get_mapping_status()
1017 subflow->map_subflow_seq == mpext->subflow_seq && in get_mapping_status()
1018 subflow->map_data_len == data_len && in get_mapping_status()
1019 subflow->map_csum_reqd == mpext->csum_reqd) { in get_mapping_status()
1036 subflow->map_seq = map_seq; in get_mapping_status()
1037 subflow->map_subflow_seq = mpext->subflow_seq; in get_mapping_status()
1038 subflow->map_data_len = data_len; in get_mapping_status()
1039 subflow->map_valid = 1; in get_mapping_status()
1040 subflow->map_data_fin = mpext->data_fin; in get_mapping_status()
1041 subflow->mpc_map = mpext->mpc_map; in get_mapping_status()
1042 subflow->map_csum_reqd = mpext->csum_reqd; in get_mapping_status()
1043 subflow->map_csum_len = 0; in get_mapping_status()
1044 subflow->map_data_csum = csum_unfold(mpext->csum); in get_mapping_status()
1047 if (unlikely(subflow->map_csum_reqd != csum_reqd)) in get_mapping_status()
1051 subflow->map_seq, subflow->map_subflow_seq, in get_mapping_status()
1052 subflow->map_data_len, subflow->map_csum_reqd, in get_mapping_status()
1053 subflow->map_data_csum); in get_mapping_status()
1073 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in mptcp_subflow_discard_data() local
1080 subflow->map_subflow_seq); in mptcp_subflow_discard_data()
1085 if (mptcp_subflow_get_map_offset(subflow) >= subflow->map_data_len) in mptcp_subflow_discard_data()
1086 subflow->map_valid = 0; in mptcp_subflow_discard_data()
1107 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in subflow_check_data_avail() local
1113 WRITE_ONCE(subflow->data_avail, 0); in subflow_check_data_avail()
1114 if (subflow->data_avail) in subflow_check_data_avail()
1117 msk = mptcp_sk(subflow->conn); in subflow_check_data_avail()
1141 if (!subflow->mpc_map) in subflow_check_data_avail()
1143 WRITE_ONCE(msk->remote_key, subflow->remote_key); in subflow_check_data_avail()
1144 WRITE_ONCE(msk->ack_seq, subflow->map_seq); in subflow_check_data_avail()
1149 ack_seq = mptcp_subflow_get_mapped_dsn(subflow); in subflow_check_data_avail()
1157 WRITE_ONCE(subflow->data_avail, MPTCP_SUBFLOW_DATA_AVAIL); in subflow_check_data_avail()
1168 if (subflow->send_mp_fail) { in subflow_check_data_avail()
1175 subflow->reset_transient = 0; in subflow_check_data_avail()
1176 subflow->reset_reason = MPTCP_RST_EMIDDLEBOX; in subflow_check_data_avail()
1178 WRITE_ONCE(subflow->data_avail, 0); in subflow_check_data_avail()
1182 if (subflow->mp_join || subflow->fully_established) { in subflow_check_data_avail()
1188 subflow->reset_transient = 0; in subflow_check_data_avail()
1189 subflow->reset_reason = MPTCP_RST_EMPTCP; in subflow_check_data_avail()
1191 WRITE_ONCE(subflow->data_avail, 0); in subflow_check_data_avail()
1197 subflow->map_valid = 1; in subflow_check_data_avail()
1198 subflow->map_seq = READ_ONCE(msk->ack_seq); in subflow_check_data_avail()
1199 subflow->map_data_len = skb->len; in subflow_check_data_avail()
1200 subflow->map_subflow_seq = tcp_sk(ssk)->copied_seq - subflow->ssn_offset; in subflow_check_data_avail()
1201 WRITE_ONCE(subflow->data_avail, MPTCP_SUBFLOW_DATA_AVAIL); in subflow_check_data_avail()
1207 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in mptcp_subflow_data_available() local
1210 if (subflow->map_valid && in mptcp_subflow_data_available()
1211 mptcp_subflow_get_map_offset(subflow) >= subflow->map_data_len) { in mptcp_subflow_data_available()
1212 subflow->map_valid = 0; in mptcp_subflow_data_available()
1213 WRITE_ONCE(subflow->data_avail, 0); in mptcp_subflow_data_available()
1216 subflow->map_subflow_seq, in mptcp_subflow_data_available()
1217 subflow->map_data_len); in mptcp_subflow_data_available()
1234 const struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in mptcp_space() local
1235 const struct sock *sk = subflow->conn; in mptcp_space()
1243 struct mptcp_subflow_context *subflow; in __mptcp_error_report() local
1246 mptcp_for_each_subflow(msk, subflow) { in __mptcp_error_report()
1247 struct sock *ssk = mptcp_subflow_tcp_sock(subflow); in __mptcp_error_report()
1283 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in subflow_data_ready() local
1285 struct sock *parent = subflow->conn; in subflow_data_ready()
1301 WARN_ON_ONCE(!__mptcp_check_fallback(msk) && !subflow->mp_capable && in subflow_data_ready()
1302 !subflow->mp_join && !(state & TCPF_CLOSE)); in subflow_data_ready()
1331 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in mptcpv6_handle_mapped() local
1338 subflow, sk->sk_family, icsk->icsk_af_ops, target, mapped); in mptcpv6_handle_mapped()
1343 subflow->icsk_af_ops = icsk->icsk_af_ops; in mptcpv6_handle_mapped()
1383 struct mptcp_subflow_context *subflow; in __mptcp_subflow_connect() local
1403 subflow = mptcp_subflow_ctx(ssk); in __mptcp_subflow_connect()
1405 get_random_bytes(&subflow->local_nonce, sizeof(u32)); in __mptcp_subflow_connect()
1406 } while (!subflow->local_nonce); in __mptcp_subflow_connect()
1418 subflow->remote_key = msk->remote_key; in __mptcp_subflow_connect()
1419 subflow->local_key = msk->local_key; in __mptcp_subflow_connect()
1420 subflow->token = msk->token; in __mptcp_subflow_connect()
1433 mptcp_crypto_key_sha(subflow->remote_key, &remote_token, NULL); in __mptcp_subflow_connect()
1436 subflow->remote_token = remote_token; in __mptcp_subflow_connect()
1437 subflow->local_id = local_id; in __mptcp_subflow_connect()
1438 subflow->remote_id = remote_id; in __mptcp_subflow_connect()
1439 subflow->request_join = 1; in __mptcp_subflow_connect()
1440 subflow->request_bkup = !!(flags & MPTCP_PM_ADDR_FLAG_BACKUP); in __mptcp_subflow_connect()
1443 mptcp_add_pending_subflow(msk, subflow); in __mptcp_subflow_connect()
1456 list_del(&subflow->node); in __mptcp_subflow_connect()
1458 sock_put(mptcp_subflow_tcp_sock(subflow)); in __mptcp_subflow_connect()
1461 subflow->disposable = 1; in __mptcp_subflow_connect()
1511 struct mptcp_subflow_context *subflow; in mptcp_subflow_create_socket() local
1558 subflow = mptcp_subflow_ctx(sf->sk); in mptcp_subflow_create_socket()
1559 pr_debug("subflow=%p", subflow); in mptcp_subflow_create_socket()
1563 subflow->conn = sk; in mptcp_subflow_create_socket()
1608 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in subflow_state_change() local
1609 struct sock *parent = subflow->conn; in subflow_state_change()
1618 subflow->conn_finished = 1; in subflow_state_change()
1634 !subflow->rx_eof && subflow_is_done(sk)) { in subflow_state_change()
1635 subflow->rx_eof = 1; in subflow_state_change()
1754 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in tcp_release_cb_override() local
1756 if (mptcp_subflow_has_delegated_action(subflow)) in tcp_release_cb_override()