FM / linux

/usr/include/linux

Name	Size	Mode	Actions
android/	-	0755	rm
byteorder/	-	0755	rm
caif/	-	0755	rm
can/	-	0755	rm
cifs/	-	0755	rm
dvb/	-	0755	rm
genwqe/	-	0755	rm
hdlc/	-	0755	rm
hsi/	-	0755	rm
iio/	-	0755	rm
isdn/	-	0755	rm
media/	-	0755	rm
misc/	-	0755	rm
mmc/	-	0755	rm
netfilter/	-	0755	rm
netfilter_arp/	-	0755	rm
netfilter_bridge/	-	0755	rm
netfilter_ipv4/	-	0755	rm
netfilter_ipv6/	-	0755	rm
nfsd/	-	0755	rm
raid/	-	0755	rm
sched/	-	0755	rm
spi/	-	0755	rm
sunrpc/	-	0755	rm
surface_aggregator/	-	0755	rm
tc_act/	-	0755	rm
tc_ematch/	-	0755	rm
usb/	-	0755	rm
a.out.h	6892	0644	edit dl rm
acct.h	3913	0644	edit dl rm
acrn.h	18956	0644	edit dl rm
adb.h	1140	0644	edit dl rm
adfs_fs.h	993	0644	edit dl rm
affs_hardblocks.h	1578	0644	edit dl rm
agpgart.h	3955	0644	edit dl rm
aio_abi.h	3398	0644	edit dl rm
am437x-vpfe.h	3681	0644	edit dl rm
amt.h	1747	0644	edit dl rm
apm_bios.h	3683	0644	edit dl rm
arcfb.h	213	0644	edit dl rm
arm_sdei.h	2751	0644	edit dl rm
aspeed-lpc-ctrl.h	1780	0644	edit dl rm
aspeed-p2a-ctrl.h	1906	0644	edit dl rm
aspeed-video.h	389	0644	edit dl rm
atalk.h	1023	0644	edit dl rm
atm.h	7888	0644	edit dl rm
atmapi.h	952	0644	edit dl rm
atmarp.h	1296	0644	edit dl rm
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atmsvc.h	1853	0644	edit dl rm
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atm_tcp.h	1622	0644	edit dl rm
atm_zatm.h	1540	0644	edit dl rm
audit.h	21744	0644	edit dl rm
auto_dev-ioctl.h	4985	0644	edit dl rm
auto_fs.h	6428	0644	edit dl rm
auto_fs4.h	451	0644	edit dl rm
auxvec.h	1819	0644	edit dl rm
ax25.h	2824	0644	edit dl rm
batadv_packet.h	21632	0644	edit dl rm
batman_adv.h	16887	0644	edit dl rm
baycom.h	883	0644	edit dl rm
bcm933xx_hcs.h	419	0644	edit dl rm
bfs_fs.h	1905	0644	edit dl rm
binfmts.h	776	0644	edit dl rm
bits.h	517	0644	edit dl rm
blkdev.h	359	0644	edit dl rm
blkpg.h	904	0644	edit dl rm
blktrace_api.h	4701	0644	edit dl rm
blkzoned.h	6492	0644	edit dl rm
bpf.h	280344	0644	edit dl rm
bpf_common.h	1367	0644	edit dl rm
bpf_perf_event.h	529	0644	edit dl rm
bpqether.h	981	0644	edit dl rm
bsg.h	2494	0644	edit dl rm
bt-bmc.h	572	0644	edit dl rm
btf.h	5591	0644	edit dl rm
btrfs.h	37150	0644	edit dl rm
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cachefiles.h	1650	0644	edit dl rm
can.h	11496	0644	edit dl rm
capability.h	13523	0644	edit dl rm
capi.h	3124	0644	edit dl rm
cciss_defs.h	3281	0644	edit dl rm
cciss_ioctl.h	2761	0644	edit dl rm
ccs.h	767	0644	edit dl rm
cdrom.h	29561	0644	edit dl rm
cec-funcs.h	54419	0644	edit dl rm
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cfm_bridge.h	1456	0644	edit dl rm
cgroupstats.h	2105	0644	edit dl rm
chio.h	5282	0644	edit dl rm
close_range.h	377	0644	edit dl rm
cn_proc.h	4160	0644	edit dl rm
coda.h	18216	0644	edit dl rm
coff.h	12549	0644	edit dl rm
comedi.h	55481	0644	edit dl rm
connector.h	2252	0644	edit dl rm
const.h	1587	0644	edit dl rm
coresight-stm.h	747	0644	edit dl rm
counter.h	4889	0644	edit dl rm
cramfs_fs.h	3555	0644	edit dl rm
cryptouser.h	5812	0644	edit dl rm
cuda.h	905	0644	edit dl rm
cxl_mem.h	8143	0644	edit dl rm
cyclades.h	969	0644	edit dl rm
cycx_cfm.h	2989	0644	edit dl rm
dcbnl.h	25571	0644	edit dl rm
dccp.h	6436	0644	edit dl rm
devlink.h	22832	0644	edit dl rm
dlm.h	2664	0644	edit dl rm
dlmconstants.h	5091	0644	edit dl rm
dlm_device.h	2541	0644	edit dl rm
dlm_plock.h	916	0644	edit dl rm
dm-ioctl.h	11598	0644	edit dl rm
dm-log-userspace.h	15190	0644	edit dl rm
dma-buf.h	7347	0644	edit dl rm
dma-heap.h	1397	0644	edit dl rm
dns_resolver.h	3949	0644	edit dl rm
dpll.h	8356	0644	edit dl rm
dqblk_xfs.h	9388	0644	edit dl rm
dw100.h	357	0644	edit dl rm
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elf-em.h	2627	0644	edit dl rm
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elf.h	15677	0644	edit dl rm
errno.h	23	0644	edit dl rm
errqueue.h	1983	0644	edit dl rm
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eventfd.h	264	0644	edit dl rm
eventpoll.h	2912	0644	edit dl rm
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ext4.h	4122	0644	edit dl rm
f2fs.h	3363	0644	edit dl rm
fadvise.h	842	0644	edit dl rm
falloc.h	3643	0644	edit dl rm
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fb.h	16335	0644	edit dl rm
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fd.h	12117	0644	edit dl rm
fdreg.h	5364	0644	edit dl rm
fib_rules.h	2058	0644	edit dl rm
fiemap.h	2774	0644	edit dl rm
filter.h	2216	0644	edit dl rm
firewire-cdev.h	50720	0644	edit dl rm
firewire-constants.h	3231	0644	edit dl rm
fou.h	819	0644	edit dl rm
fpga-dfl.h	8728	0644	edit dl rm
fs.h	21733	0644	edit dl rm
fscrypt.h	6592	0644	edit dl rm
fsi.h	3088	0644	edit dl rm
fsl_hypervisor.h	7301	0644	edit dl rm
fsl_mc.h	734	0644	edit dl rm
fsmap.h	4402	0644	edit dl rm
fsverity.h	3185	0644	edit dl rm
fuse.h	29504	0644	edit dl rm
futex.h	6127	0644	edit dl rm
gameport.h	897	0644	edit dl rm
genetlink.h	2238	0644	edit dl rm
gen_stats.h	1526	0644	edit dl rm
gfs2_ondisk.h	14773	0644	edit dl rm
gpio.h	20297	0644	edit dl rm
gsmmux.h	4509	0644	edit dl rm
gtp.h	782	0644	edit dl rm
handshake.h	1646	0644	edit dl rm
hash_info.h	1034	0644	edit dl rm
hdlc.h	637	0644	edit dl rm
hdlcdrv.h	2908	0644	edit dl rm
hdreg.h	22703	0644	edit dl rm
hid.h	2086	0644	edit dl rm
hiddev.h	6345	0644	edit dl rm
hidraw.h	2114	0644	edit dl rm
hpet.h	743	0644	edit dl rm
hsr_netlink.h	1101	0644	edit dl rm
hw_breakpoint.h	605	0644	edit dl rm
hyperv.h	11176	0644	edit dl rm
i2c-dev.h	1875	0644	edit dl rm
i2c.h	6890	0644	edit dl rm
i2o-dev.h	11555	0644	edit dl rm
i8k.h	1528	0644	edit dl rm
icmp.h	4785	0644	edit dl rm
icmpv6.h	4300	0644	edit dl rm
idxd.h	9328	0644	edit dl rm
if.h	10925	0644	edit dl rm
ife.h	351	0644	edit dl rm
if_addr.h	2143	0644	edit dl rm
if_addrlabel.h	721	0644	edit dl rm
if_alg.h	1601	0644	edit dl rm
if_arcnet.h	3714	0644	edit dl rm
if_arp.h	6589	0644	edit dl rm
if_bonding.h	5145	0644	edit dl rm
if_bridge.h	20666	0644	edit dl rm
if_cablemodem.h	986	0644	edit dl rm
if_eql.h	1349	0644	edit dl rm
if_ether.h	8766	0644	edit dl rm
if_fc.h	1738	0644	edit dl rm
if_fddi.h	4369	0644	edit dl rm
if_hippi.h	4235	0644	edit dl rm
if_infiniband.h	1245	0644	edit dl rm
if_link.h	56005	0644	edit dl rm
if_ltalk.h	210	0644	edit dl rm
if_macsec.h	6503	0644	edit dl rm
if_packet.h	8273	0644	edit dl rm
if_phonet.h	424	0644	edit dl rm
if_plip.h	660	0644	edit dl rm
if_ppp.h	29	0644	edit dl rm
if_pppol2tp.h	3303	0644	edit dl rm
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if_slip.h	872	0644	edit dl rm
if_team.h	1617	0644	edit dl rm
if_tun.h	4315	0644	edit dl rm
if_tunnel.h	5604	0644	edit dl rm
if_vlan.h	1831	0644	edit dl rm
if_x25.h	881	0644	edit dl rm
if_xdp.h	5010	0644	edit dl rm
igmp.h	3061	0644	edit dl rm
ila.h	1246	0644	edit dl rm
in.h	10956	0644	edit dl rm
in6.h	7578	0644	edit dl rm
inet_diag.h	5015	0644	edit dl rm
inotify.h	3289	0644	edit dl rm
input-event-codes.h	30258	0644	edit dl rm
input.h	16217	0644	edit dl rm
in_route.h	936	0644	edit dl rm
ioam6.h	2383	0644	edit dl rm
ioam6_genl.h	1373	0644	edit dl rm
ioam6_iptunnel.h	1428	0644	edit dl rm
ioctl.h	163	0644	edit dl rm
iommufd.h	29804	0644	edit dl rm
ioprio.h	4175	0644	edit dl rm
io_uring.h	22355	0644	edit dl rm
ip.h	4846	0644	edit dl rm
ip6_tunnel.h	1953	0644	edit dl rm
ipc.h	2101	0644	edit dl rm
ipmi.h	15442	0644	edit dl rm
ipmi_bmc.h	488	0644	edit dl rm
ipmi_msgdefs.h	3430	0644	edit dl rm
ipmi_ssif_bmc.h	441	0644	edit dl rm
ipsec.h	947	0644	edit dl rm
ipv6.h	4325	0644	edit dl rm
ipv6_route.h	1908	0644	edit dl rm
ip_vs.h	13962	0644	edit dl rm
irqnr.h	104	0644	edit dl rm
iso_fs.h	6483	0644	edit dl rm
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ivtv.h	3022	0644	edit dl rm
ivtvfb.h	1207	0644	edit dl rm
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joystick.h	3434	0644	edit dl rm
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keyboard.h	13459	0644	edit dl rm
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mpls_iptunnel.h	761	0644	edit dl rm
mptcp.h	3970	0644	edit dl rm
mptcp_pm.h	4590	0644	edit dl rm
mqueue.h	2201	0644	edit dl rm
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mrp_bridge.h	1708	0644	edit dl rm
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mtio.h	8175	0644	edit dl rm
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netconf.h	614	0644	edit dl rm
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netfilter_arp.h	445	0644	edit dl rm
netfilter_bridge.h	1238	0644	edit dl rm
netfilter_ipv4.h	1488	0644	edit dl rm
netfilter_ipv6.h	1383	0644	edit dl rm
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npcm-video.h	1215	0644	edit dl rm
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nvram.h	532	0644	edit dl rm
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serio.h	2139	0644	edit dl rm
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smc_diag.h	2951	0644	edit dl rm
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sysinfo.h	1049	0644	edit dl rm
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taskstats.h	8322	0644	edit dl rm
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Edit: /usr/include/linux/tcp.h (17072B)

/* 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];
};

#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_AO_ADD_KEY		38	/* Add/Set MKT */
#define TCP_AO_DEL_KEY		39	/* Delete MKT */
#define TCP_AO_INFO		40	/* Set/list TCP-AO per-socket options */
#define TCP_AO_GET_KEYS		41	/* List MKT(s) */
#define TCP_AO_REPAIR		42	/* Get/Set SNEs and ISNs */

#define TCP_IS_MPTCP		43	/* Is MPTCP being used? */

#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 */
#define TCPI_OPT_USEC_TS	64 /* usec timestamps */

/*
 * 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)
				      */
	__u32	tcpi_rcv_wnd;	     /* local advertised receive window after
				      * scaling (bytes)
				      */

__u32   tcpi_rehash;         /* PLB or timeout triggered rehash attempts */

__u16	tcpi_total_rto;	/* Total number of RTO timeouts, including
				 * SYN/SYN-ACK and recurring timeouts.
				 */
	__u16	tcpi_total_rto_recoveries;	/* Total number of RTO
						 * recoveries, including any
						 * unfinished recovery.
						 */
	__u32	tcpi_total_rto_time;	/* Total time spent in RTO recoveries
					 * in milliseconds, including any
					 * unfinished recovery.
					 */
};

/* 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 */
	TCP_NLA_EDT,		/* Earliest departure time (CLOCK_MONOTONIC) */
	TCP_NLA_TTL,		/* TTL or hop limit of a packet received */
	TCP_NLA_REHASH,         /* PLB and timeout triggered rehash attempts */
};

/* 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];
};

#define TCP_AO_MAXKEYLEN	80

#define TCP_AO_KEYF_IFINDEX	(1 << 0)	/* L3 ifindex for VRF */
#define TCP_AO_KEYF_EXCLUDE_OPT	(1 << 1)	/* "Indicates whether TCP
						 *  options other than TCP-AO
						 *  are included in the MAC
						 *  calculation"
						 */

struct tcp_ao_add { /* setsockopt(TCP_AO_ADD_KEY) */
	struct __kernel_sockaddr_storage addr;	/* peer's address for the key */
	char	alg_name[64];		/* crypto hash algorithm to use */
	__s32	ifindex;		/* L3 dev index for VRF */
	__u32   set_current	:1,	/* set key as Current_key at once */
		set_rnext	:1,	/* request it from peer with RNext_key */
		reserved	:30;	/* must be 0 */
	__u16	reserved2;		/* padding, must be 0 */
	__u8	prefix;			/* peer's address prefix */
	__u8	sndid;			/* SendID for outgoing segments */
	__u8	rcvid;			/* RecvID to match for incoming seg */
	__u8	maclen;			/* length of authentication code (hash) */
	__u8	keyflags;		/* see TCP_AO_KEYF_ */
	__u8	keylen;			/* length of ::key */
	__u8	key[TCP_AO_MAXKEYLEN];
} __attribute__((aligned(8)));

struct tcp_ao_del { /* setsockopt(TCP_AO_DEL_KEY) */
	struct __kernel_sockaddr_storage addr;	/* peer's address for the key */
	__s32	ifindex;		/* L3 dev index for VRF */
	__u32   set_current	:1,	/* corresponding ::current_key */
		set_rnext	:1,	/* corresponding ::rnext */
		del_async	:1,	/* only valid for listen sockets */
		reserved	:29;	/* must be 0 */
	__u16	reserved2;		/* padding, must be 0 */
	__u8	prefix;			/* peer's address prefix */
	__u8	sndid;			/* SendID for outgoing segments */
	__u8	rcvid;			/* RecvID to match for incoming seg */
	__u8	current_key;		/* KeyID to set as Current_key */
	__u8	rnext;			/* KeyID to set as Rnext_key */
	__u8	keyflags;		/* see TCP_AO_KEYF_ */
} __attribute__((aligned(8)));

struct tcp_ao_info_opt { /* setsockopt(TCP_AO_INFO), getsockopt(TCP_AO_INFO) */
	/* Here 'in' is for setsockopt(), 'out' is for getsockopt() */
	__u32   set_current	:1,	/* in/out: corresponding ::current_key */
		set_rnext	:1,	/* in/out: corresponding ::rnext */
		ao_required	:1,	/* in/out: don't accept non-AO connects */
		set_counters	:1,	/* in: set/clear ::pkt_* counters */
		accept_icmps	:1,	/* in/out: accept incoming ICMPs */
		reserved	:27;	/* must be 0 */
	__u16	reserved2;		/* padding, must be 0 */
	__u8	current_key;		/* in/out: KeyID of Current_key */
	__u8	rnext;			/* in/out: keyid of RNext_key */
	__u64	pkt_good;		/* in/out: verified segments */
	__u64	pkt_bad;		/* in/out: failed verification */
	__u64	pkt_key_not_found;	/* in/out: could not find a key to verify */
	__u64	pkt_ao_required;	/* in/out: segments missing TCP-AO sign */
	__u64	pkt_dropped_icmp;	/* in/out: ICMPs that were ignored */
} __attribute__((aligned(8)));

struct tcp_ao_getsockopt { /* getsockopt(TCP_AO_GET_KEYS) */
	struct __kernel_sockaddr_storage addr;	/* in/out: dump keys for peer
						 * with this address/prefix
						 */
	char	alg_name[64];		/* out: crypto hash algorithm */
	__u8	key[TCP_AO_MAXKEYLEN];
	__u32	nkeys;			/* in: size of the userspace buffer
					 * @optval, measured in @optlen - the
					 * sizeof(struct tcp_ao_getsockopt)
					 * out: number of keys that matched
					 */
	__u16   is_current	:1,	/* in: match and dump Current_key,
					 * out: the dumped key is Current_key
					 */

is_rnext	:1,	/* in: match and dump RNext_key,
					 * out: the dumped key is RNext_key
					 */
		get_all		:1,	/* in: dump all keys */
		reserved	:13;	/* padding, must be 0 */
	__u8	sndid;			/* in/out: dump keys with SendID */
	__u8	rcvid;			/* in/out: dump keys with RecvID */
	__u8	prefix;			/* in/out: dump keys with address/prefix */
	__u8	maclen;			/* out: key's length of authentication
					 * code (hash)
					 */
	__u8	keyflags;		/* in/out: see TCP_AO_KEYF_ */
	__u8	keylen;			/* out: length of ::key */
	__s32	ifindex;		/* in/out: L3 dev index for VRF */
	__u64	pkt_good;		/* out: verified segments */
	__u64	pkt_bad;		/* out: segments that failed verification */
} __attribute__((aligned(8)));

struct tcp_ao_repair { /* {s,g}etsockopt(TCP_AO_REPAIR) */
	__be32			snt_isn;
	__be32			rcv_isn;
	__u32			snd_sne;
	__u32			rcv_sne;
} __attribute__((aligned(8)));

/* setsockopt(fd, IPPROTO_TCP, TCP_ZEROCOPY_RECEIVE, ...) */

#define TCP_RECEIVE_ZEROCOPY_FLAG_TLB_CLEAN_HINT 0x1
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 */
	__u64 copybuf_address;	/* in: copybuf address (small reads) */
	__s32 copybuf_len; /* in/out: copybuf bytes avail/used or error */
	__u32 flags; /* in: flags */
	__u64 msg_control; /* ancillary data */
	__u64 msg_controllen;
	__u32 msg_flags;
	__u32 reserved; /* set to 0 for now */
};
#endif /* _LINUX_TCP_H */

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