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tcp.h
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tcp.h
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/*
* Copyright (c) 2000-2018 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@
*/
/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)tcp.h 8.1 (Berkeley) 6/10/93
* $FreeBSD: src/sys/netinet/tcp.h,v 1.13.2.3 2001/03/01 22:08:42 jlemon Exp $
*/
#ifndef _NETINET_TCP_H_
#define _NETINET_TCP_H_
#ifndef DRIVERKIT
#include <sys/appleapiopts.h>
#endif /* DRIVERKIT */
#include <machine/endian.h>
#include <machine/types.h> /* __uint32_t */
#ifndef DRIVERKIT
#include <sys/types.h>
#else
#include <sys/_types.h>
#endif /* DRIVERKIT */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
typedef __uint32_t tcp_seq;
typedef __uint32_t tcp_cc; /* connection count per rfc1644 */
#define tcp6_seq tcp_seq /* for KAME src sync over BSD*'s */
#define tcp6hdr tcphdr /* for KAME src sync over BSD*'s */
/*
* TCP header.
* Per RFC 793, September, 1981.
*/
struct tcphdr {
unsigned short th_sport; /* source port */
unsigned short th_dport; /* destination port */
tcp_seq th_seq; /* sequence number */
tcp_seq th_ack; /* acknowledgement number */
#if __DARWIN_BYTE_ORDER == __DARWIN_LITTLE_ENDIAN
unsigned int th_x2:4, /* (unused) */
th_off:4; /* data offset */
#endif
#if __DARWIN_BYTE_ORDER == __DARWIN_BIG_ENDIAN
unsigned int th_off:4, /* data offset */
th_x2:4; /* (unused) */
#endif
unsigned char th_flags;
#define TH_FIN 0x01
#define TH_SYN 0x02
#define TH_RST 0x04
#define TH_PUSH 0x08
#define TH_ACK 0x10
#define TH_URG 0x20
#define TH_ECE 0x40
#define TH_CWR 0x80
#define TH_FLAGS (TH_FIN|TH_SYN|TH_RST|TH_ACK|TH_URG|TH_ECE|TH_CWR)
#define TH_ACCEPT (TH_FIN|TH_SYN|TH_RST|TH_ACK)
unsigned short th_win; /* window */
unsigned short th_sum; /* checksum */
unsigned short th_urp; /* urgent pointer */
};
#define TCPOPT_EOL 0
#define TCPOPT_NOP 1
#define TCPOPT_MAXSEG 2
#define TCPOLEN_MAXSEG 4
#define TCPOPT_WINDOW 3
#define TCPOLEN_WINDOW 3
#define TCPOPT_SACK_PERMITTED 4 /* Experimental */
#define TCPOLEN_SACK_PERMITTED 2
#define TCPOPT_SACK 5 /* Experimental */
#define TCPOLEN_SACK 8 /* len of sack block */
#define TCPOPT_TIMESTAMP 8
#define TCPOLEN_TIMESTAMP 10
#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */
#define TCPOPT_TSTAMP_HDR \
(TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)
#define MAX_TCPOPTLEN 40 /* Absolute maximum TCP options len */
#define TCPOPT_CC 11 /* CC options: RFC-1644 */
#define TCPOPT_CCNEW 12
#define TCPOPT_CCECHO 13
#define TCPOLEN_CC 6
#define TCPOLEN_CC_APPA (TCPOLEN_CC+2)
#define TCPOPT_CC_HDR(ccopt) \
(TCPOPT_NOP<<24|TCPOPT_NOP<<16|(ccopt)<<8|TCPOLEN_CC)
#define TCPOPT_SIGNATURE 19 /* Keyed MD5: RFC 2385 */
#define TCPOLEN_SIGNATURE 18
#if MPTCP
#define TCPOPT_MULTIPATH 30
#endif
#define TCPOPT_FASTOPEN 34
#define TCPOLEN_FASTOPEN_REQ 2
/* Option definitions */
#define TCPOPT_SACK_PERMIT_HDR \
(TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_SACK_PERMITTED<<8|TCPOLEN_SACK_PERMITTED)
#define TCPOPT_SACK_HDR (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_SACK<<8)
/* Miscellaneous constants */
#define MAX_SACK_BLKS 6 /* Max # SACK blocks stored at sender side */
/*
* A SACK option that specifies n blocks will have a length of (8*n + 2)
* bytes, so the 40 bytes available for TCP options can specify a
* maximum of 4 blocks.
*/
#define TCP_MAX_SACK 4 /* MAX # SACKs sent in any segment */
/*
* Default maximum segment size for TCP.
* With an IP MTU of 576, this is 536,
* but 512 is probably more convenient.
* This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)).
*/
#define TCP_MSS 512
/*
* TCP_MINMSS is defined to be 216 which is fine for the smallest
* link MTU (256 bytes, SLIP interface) in the Internet.
* However it is very unlikely to come across such low MTU interfaces
* these days (anno dato 2004).
* Probably it can be set to 512 without ill effects. But we play safe.
* See tcp_subr.c tcp_minmss SYSCTL declaration for more comments.
* Setting this to "0" disables the minmss check.
*/
#define TCP_MINMSS 216
/*
* Default maximum segment size for TCP6.
* With an IP6 MSS of 1280, this is 1220,
* but 1024 is probably more convenient. (xxx kazu in doubt)
* This should be defined as MIN(1024, IP6_MSS - sizeof (struct tcpip6hdr))
*/
#define TCP6_MSS 1024
#define TCP_MAXWIN 65535 /* largest value for (unscaled) window */
#define TTCP_CLIENT_SND_WND 4096 /* dflt send window for T/TCP client */
#define TCP_MAX_WINSHIFT 14 /* maximum window shift */
#define TCP_MAXHLEN (0xf<<2) /* max length of header in bytes */
#define TCP_MAXOLEN (TCP_MAXHLEN - sizeof(struct tcphdr))
/* max space left for options */
#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
/*
* User-settable options (used with setsockopt).
*/
#define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
#define TCP_MAXSEG 0x02 /* set maximum segment size */
#define TCP_NOPUSH 0x04 /* don't push last block of write */
#define TCP_NOOPT 0x08 /* don't use TCP options */
#define TCP_KEEPALIVE 0x10 /* idle time used when SO_KEEPALIVE is enabled */
#define TCP_CONNECTIONTIMEOUT 0x20 /* connection timeout */
#define PERSIST_TIMEOUT 0x40 /* time after which a connection in
* persist timeout will terminate.
* see draft-ananth-tcpm-persist-02.txt
*/
#define TCP_RXT_CONNDROPTIME 0x80 /* time after which tcp retransmissions will be
* stopped and the connection will be dropped
*/
#define TCP_RXT_FINDROP 0x100 /* when this option is set, drop a connection
* after retransmitting the FIN 3 times. It will
* prevent holding too many mbufs in socket
* buffer queues.
*/
#define TCP_KEEPINTVL 0x101 /* interval between keepalives */
#define TCP_KEEPCNT 0x102 /* number of keepalives before close */
#define TCP_SENDMOREACKS 0x103 /* always ack every other packet */
#define TCP_ENABLE_ECN 0x104 /* Enable ECN on a connection */
#define TCP_FASTOPEN 0x105 /* Enable/Disable TCP Fastopen on this socket */
#define TCP_CONNECTION_INFO 0x106 /* State of TCP connection */
#ifdef PRIVATE
#define TCP_INFO 0x200 /* retrieve tcp_info structure */
#define TCP_MEASURE_SND_BW 0x202 /* Measure sender's bandwidth for this connection */
#endif /* PRIVATE */
#define TCP_NOTSENT_LOWAT 0x201 /* Low water mark for TCP unsent data */
#ifdef PRIVATE
#define TCP_MEASURE_BW_BURST 0x203 /* Burst size to use for bandwidth measurement */
#define TCP_PEER_PID 0x204 /* Lookup pid of the process we're connected to */
#define TCP_ADAPTIVE_READ_TIMEOUT 0x205 /* Read timeout used as a multiple of RTT */
#define TCP_OPTION_UNUSED_0 0x206 /* UNUSED */
#define TCP_ADAPTIVE_WRITE_TIMEOUT 0x207 /* Write timeout used as a multiple of RTT */
#define TCP_NOTIMEWAIT 0x208 /* Avoid going into time-wait */
#define TCP_DISABLE_BLACKHOLE_DETECTION 0x209 /* disable PMTU blackhole detection */
#define TCP_ECN_MODE 0x210 /* fine grain control for A/B testing */
#define TCP_KEEPALIVE_OFFLOAD 0x211 /* offload keep alive processing to firmware */
/*
* TCP_ECN_MODE values
*/
#define ECN_MODE_DEFAULT 0x0 /* per interface or system wide default */
#define ECN_MODE_ENABLE 0x1 /* force enable ECN on connection */
#define ECN_MODE_DISABLE 0x2 /* force disable ECN on connection */
/*
* TCP_NOTIFY_ACKNOWLEDGEMENT
*
* Application can use this socket option to get a notification when
* data that is currently written to the socket is acknowledged. The input
* argument given to this socket option is a marker_id that will be used for
* returning the notification. The application can continue to write
* data after setting the marker. There can be multiple of these events
* outstanding on a socket at any time up to a max of TCP_MAX_NOTIFY_ACK.
*
* To get the completed notifications, getsockopt should be called with the
* TCP_NOTIFY_ACKNOWLEDGEMENT with the following tcp_notify_ack_complete
* structure as an out argument. At most TCP_MAX_NOTIFY_ACK ids will be
* returned if they have been successfully acknowledged in each call.
*/
#define TCP_MAX_NOTIFY_ACK 10
typedef u_int32_t tcp_notify_ack_id_t;
struct tcp_notify_ack_complete {
u_int32_t notify_pending; /* still pending */
u_int32_t notify_complete_count;
tcp_notify_ack_id_t notify_complete_id[TCP_MAX_NOTIFY_ACK];
};
#define TCP_NOTIFY_ACKNOWLEDGEMENT 0x212 /* Notify when data is acknowledged */
#define MPTCP_SERVICE_TYPE 0x213 /* MPTCP Service type */
#define TCP_FASTOPEN_FORCE_HEURISTICS 0x214 /* Make sure TFO-heuristics never get disabled */
#define MPTCP_SVCTYPE_HANDOVER 0 /* Default 0 */
#define MPTCP_SVCTYPE_INTERACTIVE 1
#define MPTCP_SVCTYPE_AGGREGATE 2
#define MPTCP_SVCTYPE_TARGET_BASED 3
#define MPTCP_SVCTYPE_PURE_HANDOVER 4
#define MPTCP_SVCTYPE_MAX 5
/*
* Specify minimum time in seconds before which an established
* TCP connection will not be dropped when there is no response from the
* peer
*/
#define TCP_RXT_MINIMUM_TIMEOUT 0x215
#define TCP_RXT_MINIMUM_TIMEOUT_LIMIT (5 * 60) /* Limit is 5 minutes */
#define MPTCP_ALTERNATE_PORT 0x216
#define MPTCP_FORCE_ENABLE 0x217
#define TCP_FASTOPEN_FORCE_ENABLE 0x218
#define MPTCP_EXPECTED_PROGRESS_TARGET 0x219
/*
* The TCP_INFO socket option is a private API and is subject to change
*/
#pragma pack(4)
#define TCPI_OPT_TIMESTAMPS 0x01
#define TCPI_OPT_SACK 0x02
#define TCPI_OPT_WSCALE 0x04
#define TCPI_OPT_ECN 0x08
#define TCPI_FLAG_LOSSRECOVERY 0x01 /* Currently in loss recovery */
#define TCPI_FLAG_STREAMING_ON 0x02 /* Streaming detection on */
struct tcp_conn_status {
union {
struct {
unsigned int probe_activated : 1;
unsigned int write_probe_failed : 1;
unsigned int read_probe_failed : 1;
unsigned int conn_probe_failed : 1;
};
uint32_t pad_field;
};
};
/*
* Add new fields to this structure at the end only. This will preserve
* binary compatibility.
*/
struct tcp_info {
u_int8_t tcpi_state; /* TCP FSM state. */
u_int8_t tcpi_options; /* Options enabled on conn. */
u_int8_t tcpi_snd_wscale; /* RFC1323 send shift value. */
u_int8_t tcpi_rcv_wscale; /* RFC1323 recv shift value. */
u_int32_t tcpi_flags; /* extra flags (TCPI_FLAG_xxx) */
u_int32_t tcpi_rto; /* Retransmission timeout in milliseconds */
u_int32_t tcpi_snd_mss; /* Max segment size for send. */
u_int32_t tcpi_rcv_mss; /* Max segment size for receive. */
u_int32_t tcpi_rttcur; /* Most recent value of RTT */
u_int32_t tcpi_srtt; /* Smoothed RTT */
u_int32_t tcpi_rttvar; /* RTT variance */
u_int32_t tcpi_rttbest; /* Best RTT we've seen */
u_int32_t tcpi_snd_ssthresh; /* Slow start threshold. */
u_int32_t tcpi_snd_cwnd; /* Send congestion window. */
u_int32_t tcpi_rcv_space; /* Advertised recv window. */
u_int32_t tcpi_snd_wnd; /* Advertised send window. */
u_int32_t tcpi_snd_nxt; /* Next egress seqno */
u_int32_t tcpi_rcv_nxt; /* Next ingress seqno */
int32_t tcpi_last_outif; /* if_index of interface used to send last */
u_int32_t tcpi_snd_sbbytes; /* bytes in snd buffer including data inflight */
u_int64_t tcpi_txpackets __attribute__((aligned(8))); /* total packets sent */
u_int64_t tcpi_txbytes __attribute__((aligned(8)));
/* total bytes sent */
u_int64_t tcpi_txretransmitbytes __attribute__((aligned(8)));
/* total bytes retransmitted */
u_int64_t tcpi_txunacked __attribute__((aligned(8)));
/* current number of bytes not acknowledged */
u_int64_t tcpi_rxpackets __attribute__((aligned(8))); /* total packets received */
u_int64_t tcpi_rxbytes __attribute__((aligned(8)));
/* total bytes received */
u_int64_t tcpi_rxduplicatebytes __attribute__((aligned(8)));
/* total duplicate bytes received */
u_int64_t tcpi_rxoutoforderbytes __attribute__((aligned(8)));
/* total out of order bytes received */
u_int64_t tcpi_snd_bw __attribute__((aligned(8))); /* measured send bandwidth in bits/sec */
u_int8_t tcpi_synrexmits; /* Number of syn retransmits before connect */
u_int8_t tcpi_unused1;
u_int16_t tcpi_unused2;
u_int64_t tcpi_cell_rxpackets __attribute((aligned(8))); /* packets received over cellular */
u_int64_t tcpi_cell_rxbytes __attribute((aligned(8))); /* bytes received over cellular */
u_int64_t tcpi_cell_txpackets __attribute((aligned(8))); /* packets transmitted over cellular */
u_int64_t tcpi_cell_txbytes __attribute((aligned(8))); /* bytes transmitted over cellular */
u_int64_t tcpi_wifi_rxpackets __attribute((aligned(8))); /* packets received over Wi-Fi */
u_int64_t tcpi_wifi_rxbytes __attribute((aligned(8))); /* bytes received over Wi-Fi */
u_int64_t tcpi_wifi_txpackets __attribute((aligned(8))); /* packets transmitted over Wi-Fi */
u_int64_t tcpi_wifi_txbytes __attribute((aligned(8))); /* bytes transmitted over Wi-Fi */
u_int64_t tcpi_wired_rxpackets __attribute((aligned(8))); /* packets received over Wired */
u_int64_t tcpi_wired_rxbytes __attribute((aligned(8))); /* bytes received over Wired */
u_int64_t tcpi_wired_txpackets __attribute((aligned(8))); /* packets transmitted over Wired */
u_int64_t tcpi_wired_txbytes __attribute((aligned(8))); /* bytes transmitted over Wired */
struct tcp_conn_status tcpi_connstatus; /* status of connection probes */
u_int16_t
tcpi_tfo_cookie_req:1, /* Cookie requested? */
tcpi_tfo_cookie_rcv:1, /* Cookie received? */
tcpi_tfo_syn_loss:1, /* Fallback to reg. TCP after SYN-loss */
tcpi_tfo_syn_data_sent:1, /* SYN+data has been sent out */
tcpi_tfo_syn_data_acked:1, /* SYN+data has been fully acknowledged */
tcpi_tfo_syn_data_rcv:1, /* Server received SYN+data with a valid cookie */
tcpi_tfo_cookie_req_rcv:1, /* Server received cookie-request */
tcpi_tfo_cookie_sent:1, /* Server announced cookie */
tcpi_tfo_cookie_invalid:1, /* Server received an invalid cookie */
tcpi_tfo_cookie_wrong:1, /* Our sent cookie was wrong */
tcpi_tfo_no_cookie_rcv:1, /* We did not receive a cookie upon our request */
tcpi_tfo_heuristics_disable:1, /* TFO-heuristics disabled it */
tcpi_tfo_send_blackhole:1, /* A sending-blackhole got detected */
tcpi_tfo_recv_blackhole:1, /* A receiver-blackhole got detected */
tcpi_tfo_onebyte_proxy:1; /* A proxy acknowledges all but one byte of the SYN */
u_int16_t tcpi_ecn_client_setup:1, /* Attempted ECN setup from client side */
tcpi_ecn_server_setup:1, /* Attempted ECN setup from server side */
tcpi_ecn_success:1, /* peer negotiated ECN */
tcpi_ecn_lost_syn:1, /* Lost SYN with ECN setup */
tcpi_ecn_lost_synack:1, /* Lost SYN-ACK with ECN setup */
tcpi_local_peer:1, /* Local to the host or the subnet */
tcpi_if_cell:1, /* Interface is cellular */
tcpi_if_wifi:1, /* Interface is WiFi */
tcpi_if_wired:1, /* Interface is wired - ethernet , thunderbolt etc,. */
tcpi_if_wifi_infra:1, /* Interface is wifi infrastructure */
tcpi_if_wifi_awdl:1, /* Interface is wifi AWDL */
tcpi_snd_background:1, /* Using delay based algorithm on sender side */
tcpi_rcv_background:1; /* Using delay based algorithm on receive side */
u_int32_t tcpi_ecn_recv_ce; /* Packets received with CE */
u_int32_t tcpi_ecn_recv_cwr; /* Packets received with CWR */
u_int32_t tcpi_rcvoopack; /* out-of-order packets received */
u_int32_t tcpi_pawsdrop; /* segments dropped due to PAWS */
u_int32_t tcpi_sack_recovery_episode; /* SACK recovery episodes */
u_int32_t tcpi_reordered_pkts; /* packets reorderd */
u_int32_t tcpi_dsack_sent; /* Sent DSACK notification */
u_int32_t tcpi_dsack_recvd; /* Received a valid DSACK option */
u_int32_t tcpi_flowhash; /* Unique id for the connection */
u_int64_t tcpi_txretransmitpackets __attribute__((aligned(8)));
};
struct tcp_measure_bw_burst {
u_int32_t min_burst_size; /* Minimum number of packets to use */
u_int32_t max_burst_size; /* Maximum number of packets to use */
};
/*
* Note that IPv6 link local addresses should have the appropriate scope ID
*/
struct info_tuple {
u_int8_t itpl_proto;
union {
struct sockaddr _itpl_sa;
struct sockaddr_in _itpl_sin;
struct sockaddr_in6 _itpl_sin6;
} itpl_localaddr;
union {
struct sockaddr _itpl_sa;
struct sockaddr_in _itpl_sin;
struct sockaddr_in6 _itpl_sin6;
} itpl_remoteaddr;
};
#define itpl_local_sa itpl_localaddr._itpl_sa
#define itpl_local_sin itpl_localaddr._itpl_sin
#define itpl_local_sin6 itpl_localaddr._itpl_sin6
#define itpl_remote_sa itpl_remoteaddr._itpl_sa
#define itpl_remote_sin itpl_remoteaddr._itpl_sin
#define itpl_remote_sin6 itpl_remoteaddr._itpl_sin6
/*
* TCP connection info auxiliary data (CIAUX_TCP)
*
* Do not add new fields to this structure, just add them to tcp_info
* structure towards the end. This will preserve binary compatibility.
*/
typedef struct conninfo_tcp {
pid_t tcpci_peer_pid; /* loopback peer PID if > 0 */
struct tcp_info tcpci_tcp_info; /* TCP info */
} conninfo_tcp_t;
#pragma pack()
struct mptcp_itf_stats {
u_short ifindex;
uint16_t switches;
uint32_t is_expensive:1;
uint64_t mpis_txbytes __attribute__((aligned(8)));
uint64_t mpis_rxbytes __attribute__((aligned(8)));
uint64_t mpis_wifi_txbytes __attribute__((aligned(8)));
uint64_t mpis_wifi_rxbytes __attribute__((aligned(8)));
uint64_t mpis_wired_txbytes __attribute__((aligned(8)));
uint64_t mpis_wired_rxbytes __attribute__((aligned(8)));
uint64_t mpis_cell_txbytes __attribute__((aligned(8)));
uint64_t mpis_cell_rxbytes __attribute__((aligned(8)));
};
/* Version solely used to let libnetcore survive */
#define CONNINFO_MPTCP_VERSION 3
typedef struct conninfo_multipathtcp {
uint32_t mptcpci_subflow_count;
uint32_t mptcpci_switch_count;
sae_connid_t mptcpci_subflow_connids[4];
uint64_t mptcpci_init_rxbytes;
uint64_t mptcpci_init_txbytes;
#define MPTCP_ITFSTATS_SIZE 4
struct mptcp_itf_stats mptcpci_itfstats[MPTCP_ITFSTATS_SIZE];
uint32_t mptcpci_flags;
#define MPTCPCI_FIRSTPARTY 0x01
} conninfo_multipathtcp_t;
#endif /* PRIVATE */
struct tcp_connection_info {
u_int8_t tcpi_state; /* connection state */
u_int8_t tcpi_snd_wscale; /* Window scale for send window */
u_int8_t tcpi_rcv_wscale; /* Window scale for receive window */
u_int8_t __pad1;
u_int32_t tcpi_options; /* TCP options supported */
#define TCPCI_OPT_TIMESTAMPS 0x00000001 /* Timestamps enabled */
#define TCPCI_OPT_SACK 0x00000002 /* SACK enabled */
#define TCPCI_OPT_WSCALE 0x00000004 /* Window scaling enabled */
#define TCPCI_OPT_ECN 0x00000008 /* ECN enabled */
u_int32_t tcpi_flags; /* flags */
#define TCPCI_FLAG_LOSSRECOVERY 0x00000001
#define TCPCI_FLAG_REORDERING_DETECTED 0x00000002
u_int32_t tcpi_rto; /* retransmit timeout in ms */
u_int32_t tcpi_maxseg; /* maximum segment size supported */
u_int32_t tcpi_snd_ssthresh; /* slow start threshold in bytes */
u_int32_t tcpi_snd_cwnd; /* send congestion window in bytes */
u_int32_t tcpi_snd_wnd; /* send widnow in bytes */
u_int32_t tcpi_snd_sbbytes; /* bytes in send socket buffer, including in-flight data */
u_int32_t tcpi_rcv_wnd; /* receive window in bytes*/
u_int32_t tcpi_rttcur; /* most recent RTT in ms */
u_int32_t tcpi_srtt; /* average RTT in ms */
u_int32_t tcpi_rttvar; /* RTT variance */
u_int32_t
tcpi_tfo_cookie_req:1, /* Cookie requested? */
tcpi_tfo_cookie_rcv:1, /* Cookie received? */
tcpi_tfo_syn_loss:1, /* Fallback to reg. TCP after SYN-loss */
tcpi_tfo_syn_data_sent:1, /* SYN+data has been sent out */
tcpi_tfo_syn_data_acked:1, /* SYN+data has been fully acknowledged */
tcpi_tfo_syn_data_rcv:1, /* Server received SYN+data with a valid cookie */
tcpi_tfo_cookie_req_rcv:1, /* Server received cookie-request */
tcpi_tfo_cookie_sent:1, /* Server announced cookie */
tcpi_tfo_cookie_invalid:1, /* Server received an invalid cookie */
tcpi_tfo_cookie_wrong:1, /* Our sent cookie was wrong */
tcpi_tfo_no_cookie_rcv:1, /* We did not receive a cookie upon our request */
tcpi_tfo_heuristics_disable:1, /* TFO-heuristics disabled it */
tcpi_tfo_send_blackhole:1, /* A sending-blackhole got detected */
tcpi_tfo_recv_blackhole:1, /* A receiver-blackhole got detected */
tcpi_tfo_onebyte_proxy:1, /* A proxy acknowledges all but one byte of the SYN */
__pad2:17;
u_int64_t tcpi_txpackets __attribute__((aligned(8)));
u_int64_t tcpi_txbytes __attribute__((aligned(8)));
u_int64_t tcpi_txretransmitbytes __attribute__((aligned(8)));
u_int64_t tcpi_rxpackets __attribute__((aligned(8)));
u_int64_t tcpi_rxbytes __attribute__((aligned(8)));
u_int64_t tcpi_rxoutoforderbytes __attribute__((aligned(8)));
u_int64_t tcpi_txretransmitpackets __attribute__((aligned(8)));
};
#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
#endif