Restoring authorship annotation for <orivej@yandex-team.ru>. Commit 2 of 2.

1 files changed, 349 insertions, 349 deletions

diff --git a/contrib/libs/linux-headers/linux/tcp.h b/contrib/libs/linux-headers/linux/tcp.h
index cc8ed1ceba..f4e1003ba2 100644
--- a/contrib/libs/linux-headers/linux/tcp.h
+++ b/contrib/libs/linux-headers/linux/tcp.h
@@ -1,352 +1,352 @@
-/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 
-/* 
- * INET		An implementation of the TCP/IP protocol suite for the LINUX 
- *		operating system.  INET is implemented using the  BSD Socket 
- *		interface as the means of communication with the user level. 
- * 
- *		Definitions for the TCP protocol. 
- * 
- * Version:	@(#)tcp.h	1.0.2	04/28/93 
- * 
- * Author:	Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 
- * 
- *		This program is free software; you can redistribute it and/or 
- *		modify it under the terms of the GNU General Public License 
- *		as published by the Free Software Foundation; either version 
- *		2 of the License, or (at your option) any later version. 
- */ 
-#ifndef _LINUX_TCP_H 
-#define _LINUX_TCP_H 
- 
-#include <linux/types.h> 
-#include <asm/byteorder.h> 
-#include <linux/socket.h> 
- 
-struct tcphdr { 
-	__be16	source; 
-	__be16	dest; 
-	__be32	seq; 
-	__be32	ack_seq; 
-#if defined(__LITTLE_ENDIAN_BITFIELD) 
-	__u16	res1:4, 
-		doff:4, 
-		fin:1, 
-		syn:1, 
-		rst:1, 
-		psh:1, 
-		ack:1, 
-		urg:1, 
-		ece:1, 
-		cwr:1; 
-#elif defined(__BIG_ENDIAN_BITFIELD) 
-	__u16	doff:4, 
-		res1:4, 
-		cwr:1, 
-		ece:1, 
-		urg:1, 
-		ack:1, 
-		psh:1, 
-		rst:1, 
-		syn:1, 
-		fin:1; 
-#else 
-#error	"Adjust your <asm/byteorder.h> defines" 
-#endif	 
-	__be16	window; 
-	__sum16	check; 
-	__be16	urg_ptr; 
+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Definitions for the TCP protocol.
+ *
+ * Version:	@(#)tcp.h	1.0.2	04/28/93
+ *
+ * Author:	Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ */
+#ifndef _LINUX_TCP_H
+#define _LINUX_TCP_H
+
+#include <linux/types.h>
+#include <asm/byteorder.h>
+#include <linux/socket.h>
+
+struct tcphdr {
+	__be16	source;
+	__be16	dest;
+	__be32	seq;
+	__be32	ack_seq;
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	__u16	res1:4,
+		doff:4,
+		fin:1,
+		syn:1,
+		rst:1,
+		psh:1,
+		ack:1,
+		urg:1,
+		ece:1,
+		cwr:1;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+	__u16	doff:4,
+		res1:4,
+		cwr:1,
+		ece:1,
+		urg:1,
+		ack:1,
+		psh:1,
+		rst:1,
+		syn:1,
+		fin:1;
+#else
+#error	"Adjust your <asm/byteorder.h> defines"
+#endif	
+	__be16	window;
+	__sum16	check;
+	__be16	urg_ptr;
+};
+
+/*
+ *	The union cast uses a gcc extension to avoid aliasing problems
+ *  (union is compatible to any of its members)
+ *  This means this part of the code is -fstrict-aliasing safe now.
+ */
+union tcp_word_hdr { 
+	struct tcphdr hdr;
+	__be32 		  words[5];
 }; 
- 
-/* 
- *	The union cast uses a gcc extension to avoid aliasing problems 
- *  (union is compatible to any of its members) 
- *  This means this part of the code is -fstrict-aliasing safe now. 
- */ 
-union tcp_word_hdr {  
-	struct tcphdr hdr; 
-	__be32 		  words[5]; 
-};  
- 
-#define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3])  
- 
-enum {  
-	TCP_FLAG_CWR = __constant_cpu_to_be32(0x00800000), 
-	TCP_FLAG_ECE = __constant_cpu_to_be32(0x00400000), 
-	TCP_FLAG_URG = __constant_cpu_to_be32(0x00200000), 
-	TCP_FLAG_ACK = __constant_cpu_to_be32(0x00100000), 
-	TCP_FLAG_PSH = __constant_cpu_to_be32(0x00080000), 
-	TCP_FLAG_RST = __constant_cpu_to_be32(0x00040000), 
-	TCP_FLAG_SYN = __constant_cpu_to_be32(0x00020000), 
-	TCP_FLAG_FIN = __constant_cpu_to_be32(0x00010000), 
-	TCP_RESERVED_BITS = __constant_cpu_to_be32(0x0F000000), 
-	TCP_DATA_OFFSET = __constant_cpu_to_be32(0xF0000000) 
-};  
- 
-/* 
- * TCP general constants 
- */ 
-#define TCP_MSS_DEFAULT		 536U	/* IPv4 (RFC1122, RFC2581) */ 
-#define TCP_MSS_DESIRED		1220U	/* IPv6 (tunneled), EDNS0 (RFC3226) */ 
- 
-/* TCP socket options */ 
-#define TCP_NODELAY		1	/* Turn off Nagle's algorithm. */ 
-#define TCP_MAXSEG		2	/* Limit MSS */ 
-#define TCP_CORK		3	/* Never send partially complete segments */ 
-#define TCP_KEEPIDLE		4	/* Start keeplives after this period */ 
-#define TCP_KEEPINTVL		5	/* Interval between keepalives */ 
-#define TCP_KEEPCNT		6	/* Number of keepalives before death */ 
-#define TCP_SYNCNT		7	/* Number of SYN retransmits */ 
-#define TCP_LINGER2		8	/* Life time of orphaned FIN-WAIT-2 state */ 
-#define TCP_DEFER_ACCEPT	9	/* Wake up listener only when data arrive */ 
-#define TCP_WINDOW_CLAMP	10	/* Bound advertised window */ 
-#define TCP_INFO		11	/* Information about this connection. */ 
-#define TCP_QUICKACK		12	/* Block/reenable quick acks */ 
-#define TCP_CONGESTION		13	/* Congestion control algorithm */ 
-#define TCP_MD5SIG		14	/* TCP MD5 Signature (RFC2385) */ 
-#define TCP_THIN_LINEAR_TIMEOUTS 16      /* Use linear timeouts for thin streams*/ 
-#define TCP_THIN_DUPACK         17      /* Fast retrans. after 1 dupack */ 
-#define TCP_USER_TIMEOUT	18	/* How long for loss retry before timeout */ 
-#define TCP_REPAIR		19	/* TCP sock is under repair right now */ 
-#define TCP_REPAIR_QUEUE	20 
-#define TCP_QUEUE_SEQ		21 
-#define TCP_REPAIR_OPTIONS	22 
-#define TCP_FASTOPEN		23	/* Enable FastOpen on listeners */ 
-#define TCP_TIMESTAMP		24 
-#define TCP_NOTSENT_LOWAT	25	/* limit number of unsent bytes in write queue */ 
-#define TCP_CC_INFO		26	/* Get Congestion Control (optional) info */ 
-#define TCP_SAVE_SYN		27	/* Record SYN headers for new connections */ 
-#define TCP_SAVED_SYN		28	/* Get SYN headers recorded for connection */ 
-#define TCP_REPAIR_WINDOW	29	/* Get/set window parameters */ 
-#define TCP_FASTOPEN_CONNECT	30	/* Attempt FastOpen with connect */ 
-#define TCP_ULP			31	/* Attach a ULP to a TCP connection */ 
-#define TCP_MD5SIG_EXT		32	/* TCP MD5 Signature with extensions */ 
-#define TCP_FASTOPEN_KEY	33	/* Set the key for Fast Open (cookie) */ 
-#define TCP_FASTOPEN_NO_COOKIE	34	/* Enable TFO without a TFO cookie */ 
-#define TCP_ZEROCOPY_RECEIVE	35 
-#define TCP_INQ			36	/* Notify bytes available to read as a cmsg on read */ 
- 
-#define TCP_CM_INQ		TCP_INQ 
- 
-#define TCP_TX_DELAY		37	/* delay outgoing packets by XX usec */ 
- 
- 
-#define TCP_REPAIR_ON		1 
-#define TCP_REPAIR_OFF		0 
-#define TCP_REPAIR_OFF_NO_WP	-1	/* Turn off without window probes */ 
- 
-struct tcp_repair_opt { 
-	__u32	opt_code; 
-	__u32	opt_val; 
-}; 
- 
-struct tcp_repair_window { 
-	__u32	snd_wl1; 
-	__u32	snd_wnd; 
-	__u32	max_window; 
- 
-	__u32	rcv_wnd; 
-	__u32	rcv_wup; 
-}; 
- 
-enum { 
-	TCP_NO_QUEUE, 
-	TCP_RECV_QUEUE, 
-	TCP_SEND_QUEUE, 
-	TCP_QUEUES_NR, 
-}; 
- 
-/* why fastopen failed from client perspective */ 
-enum tcp_fastopen_client_fail { 
-	TFO_STATUS_UNSPEC, /* catch-all */ 
-	TFO_COOKIE_UNAVAILABLE, /* if not in TFO_CLIENT_NO_COOKIE mode */ 
-	TFO_DATA_NOT_ACKED, /* SYN-ACK did not ack SYN data */ 
-	TFO_SYN_RETRANSMITTED, /* SYN-ACK did not ack SYN data after timeout */ 
-}; 
- 
-/* for TCP_INFO socket option */ 
-#define TCPI_OPT_TIMESTAMPS	1 
-#define TCPI_OPT_SACK		2 
-#define TCPI_OPT_WSCALE		4 
-#define TCPI_OPT_ECN		8 /* ECN was negociated at TCP session init */ 
-#define TCPI_OPT_ECN_SEEN	16 /* we received at least one packet with ECT */ 
-#define TCPI_OPT_SYN_DATA	32 /* SYN-ACK acked data in SYN sent or rcvd */ 
- 
-/* 
- * Sender's congestion state indicating normal or abnormal situations 
- * in the last round of packets sent. The state is driven by the ACK 
- * information and timer events. 
- */ 
-enum tcp_ca_state { 
-	/* 
-	 * Nothing bad has been observed recently. 
-	 * No apparent reordering, packet loss, or ECN marks. 
-	 */ 
-	TCP_CA_Open = 0, 
-#define TCPF_CA_Open	(1<<TCP_CA_Open) 
-	/* 
-	 * The sender enters disordered state when it has received DUPACKs or 
-	 * SACKs in the last round of packets sent. This could be due to packet 
-	 * loss or reordering but needs further information to confirm packets 
-	 * have been lost. 
-	 */ 
-	TCP_CA_Disorder = 1, 
-#define TCPF_CA_Disorder (1<<TCP_CA_Disorder) 
-	/* 
-	 * The sender enters Congestion Window Reduction (CWR) state when it 
-	 * has received ACKs with ECN-ECE marks, or has experienced congestion 
-	 * or packet discard on the sender host (e.g. qdisc). 
-	 */ 
-	TCP_CA_CWR = 2, 
-#define TCPF_CA_CWR	(1<<TCP_CA_CWR) 
-	/* 
-	 * The sender is in fast recovery and retransmitting lost packets, 
-	 * typically triggered by ACK events. 
-	 */ 
-	TCP_CA_Recovery = 3, 
-#define TCPF_CA_Recovery (1<<TCP_CA_Recovery) 
-	/* 
-	 * The sender is in loss recovery triggered by retransmission timeout. 
-	 */ 
-	TCP_CA_Loss = 4 
-#define TCPF_CA_Loss	(1<<TCP_CA_Loss) 
-}; 
- 
-struct tcp_info { 
-	__u8	tcpi_state; 
-	__u8	tcpi_ca_state; 
-	__u8	tcpi_retransmits; 
-	__u8	tcpi_probes; 
-	__u8	tcpi_backoff; 
-	__u8	tcpi_options; 
-	__u8	tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4; 
-	__u8	tcpi_delivery_rate_app_limited:1, tcpi_fastopen_client_fail:2; 
- 
-	__u32	tcpi_rto; 
-	__u32	tcpi_ato; 
-	__u32	tcpi_snd_mss; 
-	__u32	tcpi_rcv_mss; 
- 
-	__u32	tcpi_unacked; 
-	__u32	tcpi_sacked; 
-	__u32	tcpi_lost; 
-	__u32	tcpi_retrans; 
-	__u32	tcpi_fackets; 
- 
-	/* Times. */ 
-	__u32	tcpi_last_data_sent; 
-	__u32	tcpi_last_ack_sent;     /* Not remembered, sorry. */ 
-	__u32	tcpi_last_data_recv; 
-	__u32	tcpi_last_ack_recv; 
- 
-	/* Metrics. */ 
-	__u32	tcpi_pmtu; 
-	__u32	tcpi_rcv_ssthresh; 
-	__u32	tcpi_rtt; 
-	__u32	tcpi_rttvar; 
-	__u32	tcpi_snd_ssthresh; 
-	__u32	tcpi_snd_cwnd; 
-	__u32	tcpi_advmss; 
-	__u32	tcpi_reordering; 
- 
-	__u32	tcpi_rcv_rtt; 
-	__u32	tcpi_rcv_space; 
- 
-	__u32	tcpi_total_retrans; 
- 
-	__u64	tcpi_pacing_rate; 
-	__u64	tcpi_max_pacing_rate; 
-	__u64	tcpi_bytes_acked;    /* RFC4898 tcpEStatsAppHCThruOctetsAcked */ 
-	__u64	tcpi_bytes_received; /* RFC4898 tcpEStatsAppHCThruOctetsReceived */ 
-	__u32	tcpi_segs_out;	     /* RFC4898 tcpEStatsPerfSegsOut */ 
-	__u32	tcpi_segs_in;	     /* RFC4898 tcpEStatsPerfSegsIn */ 
- 
-	__u32	tcpi_notsent_bytes; 
-	__u32	tcpi_min_rtt; 
-	__u32	tcpi_data_segs_in;	/* RFC4898 tcpEStatsDataSegsIn */ 
-	__u32	tcpi_data_segs_out;	/* RFC4898 tcpEStatsDataSegsOut */ 
- 
-	__u64   tcpi_delivery_rate; 
- 
-	__u64	tcpi_busy_time;      /* Time (usec) busy sending data */ 
-	__u64	tcpi_rwnd_limited;   /* Time (usec) limited by receive window */ 
-	__u64	tcpi_sndbuf_limited; /* Time (usec) limited by send buffer */ 
- 
-	__u32	tcpi_delivered; 
-	__u32	tcpi_delivered_ce; 
- 
-	__u64	tcpi_bytes_sent;     /* RFC4898 tcpEStatsPerfHCDataOctetsOut */ 
-	__u64	tcpi_bytes_retrans;  /* RFC4898 tcpEStatsPerfOctetsRetrans */ 
-	__u32	tcpi_dsack_dups;     /* RFC4898 tcpEStatsStackDSACKDups */ 
-	__u32	tcpi_reord_seen;     /* reordering events seen */ 
- 
-	__u32	tcpi_rcv_ooopack;    /* Out-of-order packets received */ 
- 
-	__u32	tcpi_snd_wnd;	     /* peer's advertised receive window after 
-				      * scaling (bytes) 
-				      */ 
-}; 
- 
-/* netlink attributes types for SCM_TIMESTAMPING_OPT_STATS */ 
+
+#define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3]) 
+
 enum { 
-	TCP_NLA_PAD, 
-	TCP_NLA_BUSY,		/* Time (usec) busy sending data */ 
-	TCP_NLA_RWND_LIMITED,	/* Time (usec) limited by receive window */ 
-	TCP_NLA_SNDBUF_LIMITED,	/* Time (usec) limited by send buffer */ 
-	TCP_NLA_DATA_SEGS_OUT,	/* Data pkts sent including retransmission */ 
-	TCP_NLA_TOTAL_RETRANS,	/* Data pkts retransmitted */ 
-	TCP_NLA_PACING_RATE,    /* Pacing rate in bytes per second */ 
-	TCP_NLA_DELIVERY_RATE,  /* Delivery rate in bytes per second */ 
-	TCP_NLA_SND_CWND,       /* Sending congestion window */ 
-	TCP_NLA_REORDERING,     /* Reordering metric */ 
-	TCP_NLA_MIN_RTT,        /* minimum RTT */ 
-	TCP_NLA_RECUR_RETRANS,  /* Recurring retransmits for the current pkt */ 
-	TCP_NLA_DELIVERY_RATE_APP_LMT, /* delivery rate application limited ? */ 
-	TCP_NLA_SNDQ_SIZE,	/* Data (bytes) pending in send queue */ 
-	TCP_NLA_CA_STATE,	/* ca_state of socket */ 
-	TCP_NLA_SND_SSTHRESH,	/* Slow start size threshold */ 
-	TCP_NLA_DELIVERED,	/* Data pkts delivered incl. out-of-order */ 
-	TCP_NLA_DELIVERED_CE,	/* Like above but only ones w/ CE marks */ 
-	TCP_NLA_BYTES_SENT,	/* Data bytes sent including retransmission */ 
-	TCP_NLA_BYTES_RETRANS,	/* Data bytes retransmitted */ 
-	TCP_NLA_DSACK_DUPS,	/* DSACK blocks received */ 
-	TCP_NLA_REORD_SEEN,	/* reordering events seen */ 
-	TCP_NLA_SRTT,		/* smoothed RTT in usecs */ 
-	TCP_NLA_TIMEOUT_REHASH, /* Timeout-triggered rehash attempts */ 
-	TCP_NLA_BYTES_NOTSENT,	/* Bytes in write queue not yet sent */ 
-}; 
- 
-/* for TCP_MD5SIG socket option */ 
-#define TCP_MD5SIG_MAXKEYLEN	80 
- 
-/* tcp_md5sig extension flags for TCP_MD5SIG_EXT */ 
-#define TCP_MD5SIG_FLAG_PREFIX		0x1	/* address prefix length */ 
-#define TCP_MD5SIG_FLAG_IFINDEX		0x2	/* ifindex set */ 
- 
-struct tcp_md5sig { 
-	struct __kernel_sockaddr_storage tcpm_addr;	/* address associated */ 
-	__u8	tcpm_flags;				/* extension flags */ 
-	__u8	tcpm_prefixlen;				/* address prefix */ 
-	__u16	tcpm_keylen;				/* key length */ 
-	int	tcpm_ifindex;				/* device index for scope */ 
-	__u8	tcpm_key[TCP_MD5SIG_MAXKEYLEN];		/* key (binary) */ 
-}; 
- 
-/* INET_DIAG_MD5SIG */ 
-struct tcp_diag_md5sig { 
-	__u8	tcpm_family; 
-	__u8	tcpm_prefixlen; 
-	__u16	tcpm_keylen; 
-	__be32	tcpm_addr[4]; 
-	__u8	tcpm_key[TCP_MD5SIG_MAXKEYLEN]; 
-}; 
- 
-/* setsockopt(fd, IPPROTO_TCP, TCP_ZEROCOPY_RECEIVE, ...) */ 
- 
-struct tcp_zerocopy_receive { 
-	__u64 address;		/* in: address of mapping */ 
-	__u32 length;		/* in/out: number of bytes to map/mapped */ 
-	__u32 recv_skip_hint;	/* out: amount of bytes to skip */ 
-	__u32 inq; /* out: amount of bytes in read queue */ 
-	__s32 err; /* out: socket error */ 
+	TCP_FLAG_CWR = __constant_cpu_to_be32(0x00800000),
+	TCP_FLAG_ECE = __constant_cpu_to_be32(0x00400000),
+	TCP_FLAG_URG = __constant_cpu_to_be32(0x00200000),
+	TCP_FLAG_ACK = __constant_cpu_to_be32(0x00100000),
+	TCP_FLAG_PSH = __constant_cpu_to_be32(0x00080000),
+	TCP_FLAG_RST = __constant_cpu_to_be32(0x00040000),
+	TCP_FLAG_SYN = __constant_cpu_to_be32(0x00020000),
+	TCP_FLAG_FIN = __constant_cpu_to_be32(0x00010000),
+	TCP_RESERVED_BITS = __constant_cpu_to_be32(0x0F000000),
+	TCP_DATA_OFFSET = __constant_cpu_to_be32(0xF0000000)
 }; 
-#endif /* _LINUX_TCP_H */ 
+
+/*
+ * TCP general constants
+ */
+#define TCP_MSS_DEFAULT		 536U	/* IPv4 (RFC1122, RFC2581) */
+#define TCP_MSS_DESIRED		1220U	/* IPv6 (tunneled), EDNS0 (RFC3226) */
+
+/* TCP socket options */
+#define TCP_NODELAY		1	/* Turn off Nagle's algorithm. */
+#define TCP_MAXSEG		2	/* Limit MSS */
+#define TCP_CORK		3	/* Never send partially complete segments */
+#define TCP_KEEPIDLE		4	/* Start keeplives after this period */
+#define TCP_KEEPINTVL		5	/* Interval between keepalives */
+#define TCP_KEEPCNT		6	/* Number of keepalives before death */
+#define TCP_SYNCNT		7	/* Number of SYN retransmits */
+#define TCP_LINGER2		8	/* Life time of orphaned FIN-WAIT-2 state */
+#define TCP_DEFER_ACCEPT	9	/* Wake up listener only when data arrive */
+#define TCP_WINDOW_CLAMP	10	/* Bound advertised window */
+#define TCP_INFO		11	/* Information about this connection. */
+#define TCP_QUICKACK		12	/* Block/reenable quick acks */
+#define TCP_CONGESTION		13	/* Congestion control algorithm */
+#define TCP_MD5SIG		14	/* TCP MD5 Signature (RFC2385) */
+#define TCP_THIN_LINEAR_TIMEOUTS 16      /* Use linear timeouts for thin streams*/
+#define TCP_THIN_DUPACK         17      /* Fast retrans. after 1 dupack */
+#define TCP_USER_TIMEOUT	18	/* How long for loss retry before timeout */
+#define TCP_REPAIR		19	/* TCP sock is under repair right now */
+#define TCP_REPAIR_QUEUE	20
+#define TCP_QUEUE_SEQ		21
+#define TCP_REPAIR_OPTIONS	22
+#define TCP_FASTOPEN		23	/* Enable FastOpen on listeners */
+#define TCP_TIMESTAMP		24
+#define TCP_NOTSENT_LOWAT	25	/* limit number of unsent bytes in write queue */
+#define TCP_CC_INFO		26	/* Get Congestion Control (optional) info */
+#define TCP_SAVE_SYN		27	/* Record SYN headers for new connections */
+#define TCP_SAVED_SYN		28	/* Get SYN headers recorded for connection */
+#define TCP_REPAIR_WINDOW	29	/* Get/set window parameters */
+#define TCP_FASTOPEN_CONNECT	30	/* Attempt FastOpen with connect */
+#define TCP_ULP			31	/* Attach a ULP to a TCP connection */
+#define TCP_MD5SIG_EXT		32	/* TCP MD5 Signature with extensions */
+#define TCP_FASTOPEN_KEY	33	/* Set the key for Fast Open (cookie) */
+#define TCP_FASTOPEN_NO_COOKIE	34	/* Enable TFO without a TFO cookie */
+#define TCP_ZEROCOPY_RECEIVE	35
+#define TCP_INQ			36	/* Notify bytes available to read as a cmsg on read */
+
+#define TCP_CM_INQ		TCP_INQ
+
+#define TCP_TX_DELAY		37	/* delay outgoing packets by XX usec */
+
+
+#define TCP_REPAIR_ON		1
+#define TCP_REPAIR_OFF		0
+#define TCP_REPAIR_OFF_NO_WP	-1	/* Turn off without window probes */
+
+struct tcp_repair_opt {
+	__u32	opt_code;
+	__u32	opt_val;
+};
+
+struct tcp_repair_window {
+	__u32	snd_wl1;
+	__u32	snd_wnd;
+	__u32	max_window;
+
+	__u32	rcv_wnd;
+	__u32	rcv_wup;
+};
+
+enum {
+	TCP_NO_QUEUE,
+	TCP_RECV_QUEUE,
+	TCP_SEND_QUEUE,
+	TCP_QUEUES_NR,
+};
+
+/* why fastopen failed from client perspective */
+enum tcp_fastopen_client_fail {
+	TFO_STATUS_UNSPEC, /* catch-all */
+	TFO_COOKIE_UNAVAILABLE, /* if not in TFO_CLIENT_NO_COOKIE mode */
+	TFO_DATA_NOT_ACKED, /* SYN-ACK did not ack SYN data */
+	TFO_SYN_RETRANSMITTED, /* SYN-ACK did not ack SYN data after timeout */
+};
+
+/* for TCP_INFO socket option */
+#define TCPI_OPT_TIMESTAMPS	1
+#define TCPI_OPT_SACK		2
+#define TCPI_OPT_WSCALE		4
+#define TCPI_OPT_ECN		8 /* ECN was negociated at TCP session init */
+#define TCPI_OPT_ECN_SEEN	16 /* we received at least one packet with ECT */
+#define TCPI_OPT_SYN_DATA	32 /* SYN-ACK acked data in SYN sent or rcvd */
+
+/*
+ * Sender's congestion state indicating normal or abnormal situations
+ * in the last round of packets sent. The state is driven by the ACK
+ * information and timer events.
+ */
+enum tcp_ca_state {
+	/*
+	 * Nothing bad has been observed recently.
+	 * No apparent reordering, packet loss, or ECN marks.
+	 */
+	TCP_CA_Open = 0,
+#define TCPF_CA_Open	(1<<TCP_CA_Open)
+	/*
+	 * The sender enters disordered state when it has received DUPACKs or
+	 * SACKs in the last round of packets sent. This could be due to packet
+	 * loss or reordering but needs further information to confirm packets
+	 * have been lost.
+	 */
+	TCP_CA_Disorder = 1,
+#define TCPF_CA_Disorder (1<<TCP_CA_Disorder)
+	/*
+	 * The sender enters Congestion Window Reduction (CWR) state when it
+	 * has received ACKs with ECN-ECE marks, or has experienced congestion
+	 * or packet discard on the sender host (e.g. qdisc).
+	 */
+	TCP_CA_CWR = 2,
+#define TCPF_CA_CWR	(1<<TCP_CA_CWR)
+	/*
+	 * The sender is in fast recovery and retransmitting lost packets,
+	 * typically triggered by ACK events.
+	 */
+	TCP_CA_Recovery = 3,
+#define TCPF_CA_Recovery (1<<TCP_CA_Recovery)
+	/*
+	 * The sender is in loss recovery triggered by retransmission timeout.
+	 */
+	TCP_CA_Loss = 4
+#define TCPF_CA_Loss	(1<<TCP_CA_Loss)
+};
+
+struct tcp_info {
+	__u8	tcpi_state;
+	__u8	tcpi_ca_state;
+	__u8	tcpi_retransmits;
+	__u8	tcpi_probes;
+	__u8	tcpi_backoff;
+	__u8	tcpi_options;
+	__u8	tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
+	__u8	tcpi_delivery_rate_app_limited:1, tcpi_fastopen_client_fail:2;
+
+	__u32	tcpi_rto;
+	__u32	tcpi_ato;
+	__u32	tcpi_snd_mss;
+	__u32	tcpi_rcv_mss;
+
+	__u32	tcpi_unacked;
+	__u32	tcpi_sacked;
+	__u32	tcpi_lost;
+	__u32	tcpi_retrans;
+	__u32	tcpi_fackets;
+
+	/* Times. */
+	__u32	tcpi_last_data_sent;
+	__u32	tcpi_last_ack_sent;     /* Not remembered, sorry. */
+	__u32	tcpi_last_data_recv;
+	__u32	tcpi_last_ack_recv;
+
+	/* Metrics. */
+	__u32	tcpi_pmtu;
+	__u32	tcpi_rcv_ssthresh;
+	__u32	tcpi_rtt;
+	__u32	tcpi_rttvar;
+	__u32	tcpi_snd_ssthresh;
+	__u32	tcpi_snd_cwnd;
+	__u32	tcpi_advmss;
+	__u32	tcpi_reordering;
+
+	__u32	tcpi_rcv_rtt;
+	__u32	tcpi_rcv_space;
+
+	__u32	tcpi_total_retrans;
+
+	__u64	tcpi_pacing_rate;
+	__u64	tcpi_max_pacing_rate;
+	__u64	tcpi_bytes_acked;    /* RFC4898 tcpEStatsAppHCThruOctetsAcked */
+	__u64	tcpi_bytes_received; /* RFC4898 tcpEStatsAppHCThruOctetsReceived */
+	__u32	tcpi_segs_out;	     /* RFC4898 tcpEStatsPerfSegsOut */
+	__u32	tcpi_segs_in;	     /* RFC4898 tcpEStatsPerfSegsIn */
+
+	__u32	tcpi_notsent_bytes;
+	__u32	tcpi_min_rtt;
+	__u32	tcpi_data_segs_in;	/* RFC4898 tcpEStatsDataSegsIn */
+	__u32	tcpi_data_segs_out;	/* RFC4898 tcpEStatsDataSegsOut */
+
+	__u64   tcpi_delivery_rate;
+
+	__u64	tcpi_busy_time;      /* Time (usec) busy sending data */
+	__u64	tcpi_rwnd_limited;   /* Time (usec) limited by receive window */
+	__u64	tcpi_sndbuf_limited; /* Time (usec) limited by send buffer */
+
+	__u32	tcpi_delivered;
+	__u32	tcpi_delivered_ce;
+
+	__u64	tcpi_bytes_sent;     /* RFC4898 tcpEStatsPerfHCDataOctetsOut */
+	__u64	tcpi_bytes_retrans;  /* RFC4898 tcpEStatsPerfOctetsRetrans */
+	__u32	tcpi_dsack_dups;     /* RFC4898 tcpEStatsStackDSACKDups */
+	__u32	tcpi_reord_seen;     /* reordering events seen */
+
+	__u32	tcpi_rcv_ooopack;    /* Out-of-order packets received */
+
+	__u32	tcpi_snd_wnd;	     /* peer's advertised receive window after
+				      * scaling (bytes)
+				      */
+};
+
+/* netlink attributes types for SCM_TIMESTAMPING_OPT_STATS */
+enum {
+	TCP_NLA_PAD,
+	TCP_NLA_BUSY,		/* Time (usec) busy sending data */
+	TCP_NLA_RWND_LIMITED,	/* Time (usec) limited by receive window */
+	TCP_NLA_SNDBUF_LIMITED,	/* Time (usec) limited by send buffer */
+	TCP_NLA_DATA_SEGS_OUT,	/* Data pkts sent including retransmission */
+	TCP_NLA_TOTAL_RETRANS,	/* Data pkts retransmitted */
+	TCP_NLA_PACING_RATE,    /* Pacing rate in bytes per second */
+	TCP_NLA_DELIVERY_RATE,  /* Delivery rate in bytes per second */
+	TCP_NLA_SND_CWND,       /* Sending congestion window */
+	TCP_NLA_REORDERING,     /* Reordering metric */
+	TCP_NLA_MIN_RTT,        /* minimum RTT */
+	TCP_NLA_RECUR_RETRANS,  /* Recurring retransmits for the current pkt */
+	TCP_NLA_DELIVERY_RATE_APP_LMT, /* delivery rate application limited ? */
+	TCP_NLA_SNDQ_SIZE,	/* Data (bytes) pending in send queue */
+	TCP_NLA_CA_STATE,	/* ca_state of socket */
+	TCP_NLA_SND_SSTHRESH,	/* Slow start size threshold */
+	TCP_NLA_DELIVERED,	/* Data pkts delivered incl. out-of-order */
+	TCP_NLA_DELIVERED_CE,	/* Like above but only ones w/ CE marks */
+	TCP_NLA_BYTES_SENT,	/* Data bytes sent including retransmission */
+	TCP_NLA_BYTES_RETRANS,	/* Data bytes retransmitted */
+	TCP_NLA_DSACK_DUPS,	/* DSACK blocks received */
+	TCP_NLA_REORD_SEEN,	/* reordering events seen */
+	TCP_NLA_SRTT,		/* smoothed RTT in usecs */
+	TCP_NLA_TIMEOUT_REHASH, /* Timeout-triggered rehash attempts */
+	TCP_NLA_BYTES_NOTSENT,	/* Bytes in write queue not yet sent */
+};
+
+/* for TCP_MD5SIG socket option */
+#define TCP_MD5SIG_MAXKEYLEN	80
+
+/* tcp_md5sig extension flags for TCP_MD5SIG_EXT */
+#define TCP_MD5SIG_FLAG_PREFIX		0x1	/* address prefix length */
+#define TCP_MD5SIG_FLAG_IFINDEX		0x2	/* ifindex set */
+
+struct tcp_md5sig {
+	struct __kernel_sockaddr_storage tcpm_addr;	/* address associated */
+	__u8	tcpm_flags;				/* extension flags */
+	__u8	tcpm_prefixlen;				/* address prefix */
+	__u16	tcpm_keylen;				/* key length */
+	int	tcpm_ifindex;				/* device index for scope */
+	__u8	tcpm_key[TCP_MD5SIG_MAXKEYLEN];		/* key (binary) */
+};
+
+/* INET_DIAG_MD5SIG */
+struct tcp_diag_md5sig {
+	__u8	tcpm_family;
+	__u8	tcpm_prefixlen;
+	__u16	tcpm_keylen;
+	__be32	tcpm_addr[4];
+	__u8	tcpm_key[TCP_MD5SIG_MAXKEYLEN];
+};
+
+/* setsockopt(fd, IPPROTO_TCP, TCP_ZEROCOPY_RECEIVE, ...) */
+
+struct tcp_zerocopy_receive {
+	__u64 address;		/* in: address of mapping */
+	__u32 length;		/* in/out: number of bytes to map/mapped */
+	__u32 recv_skip_hint;	/* out: amount of bytes to skip */
+	__u32 inq; /* out: amount of bytes in read queue */
+	__s32 err; /* out: socket error */
+};
+#endif /* _LINUX_TCP_H */