75 lines
3.6 KiB
C
75 lines
3.6 KiB
C
/*
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* Copyright (c) 2015-2016 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/* TCP-cache to store and retrieve TCP-related information */
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#ifndef _NETINET_TCP_CACHE_H
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#define _NETINET_TCP_CACHE_H
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#include <netinet/tcp_var.h>
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#include <netinet/in.h>
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#define ECN_MIN_CE_PROBES 10 /* Probes are basically the number of incoming packets */
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#define ECN_MAX_CE_RATIO 7 /* Ratio is the maximum number of CE-packets we accept per incoming "probe" */
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extern void tcp_cache_set_cookie(struct tcpcb *tp, u_char *cookie, u_int8_t len);
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extern int tcp_cache_get_cookie(struct tcpcb *tp, u_char *cookie, u_int8_t *len);
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extern unsigned int tcp_cache_get_cookie_len(struct tcpcb *tp);
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extern uint8_t tcp_cache_get_mptcp_version(struct sockaddr* dst);
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extern void tcp_cache_update_mptcp_version(struct tcpcb *tp, boolean_t succeeded);
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extern void tcp_heuristic_tfo_loss(struct tcpcb *tp);
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extern void tcp_heuristic_tfo_rst(struct tcpcb *tp);
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extern void tcp_heuristic_mptcp_loss(struct tcpcb *tp);
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extern void tcp_heuristic_ecn_loss(struct tcpcb *tp);
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extern void tcp_heuristic_tfo_middlebox(struct tcpcb *tp);
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extern void tcp_heuristic_ecn_aggressive(struct tcpcb *tp);
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extern void tcp_heuristic_tfo_success(struct tcpcb *tp);
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extern void tcp_heuristic_mptcp_success(struct tcpcb *tp);
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extern void tcp_heuristic_ecn_success(struct tcpcb *tp);
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extern boolean_t tcp_heuristic_do_tfo(struct tcpcb *tp);
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extern int tcp_heuristic_do_mptcp(struct tcpcb *tp);
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extern boolean_t tcp_heuristic_do_ecn(struct tcpcb *tp);
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extern void tcp_heuristic_ecn_droprst(struct tcpcb *tp);
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extern void tcp_heuristic_ecn_droprxmt(struct tcpcb *tp);
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extern void tcp_heuristic_ecn_synrst(struct tcpcb *tp);
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extern boolean_t tcp_heuristic_do_ecn_with_address(struct ifnet *ifp,
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union sockaddr_in_4_6 *local_address);
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extern void tcp_heuristics_ecn_update(struct necp_tcp_ecn_cache *necp_buffer,
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struct ifnet *ifp, union sockaddr_in_4_6 *local_address);
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extern boolean_t tcp_heuristic_do_tfo_with_address(struct ifnet *ifp,
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union sockaddr_in_4_6 *local_address, union sockaddr_in_4_6 *remote_address,
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u_int8_t *cookie, u_int8_t *cookie_len);
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extern void tcp_heuristics_tfo_update(struct necp_tcp_tfo_cache *necp_buffer,
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struct ifnet *ifp, union sockaddr_in_4_6 *local_address,
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union sockaddr_in_4_6 *remote_address);
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extern void tcp_cache_init(void);
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#endif /* _NETINET_TCP_CACHE_H */
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