/* * Copyright (c) 2015-2016 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* TCP-cache to store and retrieve TCP-related information */ #ifndef _NETINET_TCP_CACHE_H #define _NETINET_TCP_CACHE_H #include <netinet/tcp_var.h> #include <netinet/in.h> #define ECN_MIN_CE_PROBES 10 /* Probes are basically the number of incoming packets */ #define ECN_MAX_CE_RATIO 7 /* Ratio is the maximum number of CE-packets we accept per incoming "probe" */ extern void tcp_cache_set_cookie(struct tcpcb *tp, u_char *cookie, u_int8_t len); extern int tcp_cache_get_cookie(struct tcpcb *tp, u_char *cookie, u_int8_t *len); extern unsigned int tcp_cache_get_cookie_len(struct tcpcb *tp); extern void tcp_heuristic_tfo_loss(struct tcpcb *tp); extern void tcp_heuristic_mptcp_loss(struct tcpcb *tp); extern void tcp_heuristic_ecn_loss(struct tcpcb *tp); extern void tcp_heuristic_tfo_snd_good(struct tcpcb *tp); extern void tcp_heuristic_tfo_rcv_good(struct tcpcb *tp); extern void tcp_heuristic_tfo_middlebox(struct tcpcb *tp); extern void tcp_heuristic_ecn_aggressive(struct tcpcb *tp); extern void tcp_heuristic_tfo_success(struct tcpcb *tp); extern void tcp_heuristic_mptcp_success(struct tcpcb *tp); extern void tcp_heuristic_ecn_success(struct tcpcb *tp); extern boolean_t tcp_heuristic_do_tfo(struct tcpcb *tp); extern boolean_t tcp_heuristic_do_mptcp(struct tcpcb *tp); extern boolean_t tcp_heuristic_do_ecn(struct tcpcb *tp); extern void tcp_heuristic_ecn_droprst(struct tcpcb *tp); extern void tcp_heuristic_ecn_droprxmt(struct tcpcb *tp); extern void tcp_cache_init(void); #endif /* _NETINET_TCP_CACHE_H */