/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

#ifndef _INET_DIAG_H_

#define _INET_DIAG_H_

#include <linux/types.h>

/* Just some random number */

#define TCPDIAG_GETSOCK 18

#define DCCPDIAG_GETSOCK 19

#define INET_DIAG_GETSOCK_MAX 24

/* Socket identity */

struct inet_diag_sockid {

	__be16	idiag_sport;

	__be16	idiag_dport;

	__be32	idiag_src[4];

	__be32	idiag_dst[4];

	__u32	idiag_if;

	__u32	idiag_cookie[2];

#define INET_DIAG_NOCOOKIE (~0U)

};

/* Request structure */

struct inet_diag_req {

	__u8	idiag_family;		/* Family of addresses. */

	__u8	idiag_src_len;

	__u8	idiag_dst_len;

	__u8	idiag_ext;		/* Query extended information */

	struct inet_diag_sockid id;

	__u32	idiag_states;		/* States to dump */

	__u32	idiag_dbs;		/* Tables to dump (NI) */

};

struct inet_diag_req_v2 {

	__u8	sdiag_family;

	__u8	sdiag_protocol;

	__u8	idiag_ext;

	__u8	pad;

	__u32	idiag_states;

	struct inet_diag_sockid id;

};

/*

 * SOCK_RAW sockets require the underlied protocol to be

 * additionally specified so we can use @pad member for

 * this, but we can't rename it because userspace programs

 * still may depend on this name. Instead lets use another

 * structure definition as an alias for struct

 * @inet_diag_req_v2.

 */

struct inet_diag_req_raw {

	__u8	sdiag_family;

	__u8	sdiag_protocol;

	__u8	idiag_ext;

	__u8	sdiag_raw_protocol;

	__u32	idiag_states;

	struct inet_diag_sockid id;

};

enum {

	INET_DIAG_REQ_NONE,

	INET_DIAG_REQ_BYTECODE,

	INET_DIAG_REQ_SK_BPF_STORAGES,

	INET_DIAG_REQ_PROTOCOL,

	__INET_DIAG_REQ_MAX,

};

#define INET_DIAG_REQ_MAX (__INET_DIAG_REQ_MAX - 1)

/* Bytecode is sequence of 4 byte commands followed by variable arguments.

 * All the commands identified by "code" are conditional jumps forward:

 * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be

 * length of the command and its arguments.

 */

struct inet_diag_bc_op {

	unsigned char	code;

	unsigned char	yes;

	unsigned short	no;

};

enum {

	INET_DIAG_BC_NOP,

	INET_DIAG_BC_JMP,

	INET_DIAG_BC_S_GE,

	INET_DIAG_BC_S_LE,

	INET_DIAG_BC_D_GE,

	INET_DIAG_BC_D_LE,

	INET_DIAG_BC_AUTO,

	INET_DIAG_BC_S_COND,

	INET_DIAG_BC_D_COND,

	INET_DIAG_BC_DEV_COND,   /* u32 ifindex */

	INET_DIAG_BC_MARK_COND,

	INET_DIAG_BC_S_EQ,

	INET_DIAG_BC_D_EQ,

	INET_DIAG_BC_CGROUP_COND,   /* u64 cgroup v2 ID */

};

struct inet_diag_hostcond {

	__u8	family;

	__u8	prefix_len;

	int	port;

	__be32	addr[0];

};

struct inet_diag_markcond {

	__u32 mark;

	__u32 mask;

};

/* Base info structure. It contains socket identity (addrs/ports/cookie)

 * and, alas, the information shown by netstat. */

struct inet_diag_msg {

	__u8	idiag_family;

	__u8	idiag_state;

	__u8	idiag_timer;

	__u8	idiag_retrans;

	struct inet_diag_sockid id;

	__u32	idiag_expires;

	__u32	idiag_rqueue;

	__u32	idiag_wqueue;

	__u32	idiag_uid;

	__u32	idiag_inode;

};

/* Extensions */

enum {

	INET_DIAG_NONE,

	INET_DIAG_MEMINFO,

	INET_DIAG_INFO,

	INET_DIAG_VEGASINFO,

	INET_DIAG_CONG,

	INET_DIAG_TOS,

	INET_DIAG_TCLASS,

	INET_DIAG_SKMEMINFO,

	INET_DIAG_SHUTDOWN,

	/*

	 * Next extenstions cannot be requested in struct inet_diag_req_v2:

	 * its field idiag_ext has only 8 bits.

	 */

	INET_DIAG_DCTCPINFO,	/* request as INET_DIAG_VEGASINFO */

	INET_DIAG_PROTOCOL,	/* response attribute only */

	INET_DIAG_SKV6ONLY,

	INET_DIAG_LOCALS,

	INET_DIAG_PEERS,

	INET_DIAG_PAD,

	INET_DIAG_MARK,		/* only with CAP_NET_ADMIN */

	INET_DIAG_BBRINFO,	/* request as INET_DIAG_VEGASINFO */

	INET_DIAG_CLASS_ID,	/* request as INET_DIAG_TCLASS */

	INET_DIAG_MD5SIG,

	INET_DIAG_ULP_INFO,

	INET_DIAG_SK_BPF_STORAGES,

	INET_DIAG_CGROUP_ID,

	__INET_DIAG_MAX,

};

#define INET_DIAG_MAX (__INET_DIAG_MAX - 1)

enum {

	INET_ULP_INFO_UNSPEC,

	INET_ULP_INFO_NAME,

	INET_ULP_INFO_TLS,

	INET_ULP_INFO_MPTCP,

	__INET_ULP_INFO_MAX,

};

#define INET_ULP_INFO_MAX (__INET_ULP_INFO_MAX - 1)

/* INET_DIAG_MEM */

struct inet_diag_meminfo {

	__u32	idiag_rmem;

	__u32	idiag_wmem;

	__u32	idiag_fmem;

	__u32	idiag_tmem;

};

/* INET_DIAG_VEGASINFO */

struct tcpvegas_info {

	__u32	tcpv_enabled;

	__u32	tcpv_rttcnt;

	__u32	tcpv_rtt;

	__u32	tcpv_minrtt;

};

/* INET_DIAG_DCTCPINFO */

struct tcp_dctcp_info {

	__u16	dctcp_enabled;

	__u16	dctcp_ce_state;

	__u32	dctcp_alpha;

	__u32	dctcp_ab_ecn;

	__u32	dctcp_ab_tot;

};

/* INET_DIAG_BBRINFO */

struct tcp_bbr_info {

	/* u64 bw: max-filtered BW (app throughput) estimate in Byte per sec: */

	__u32	bbr_bw_lo;		/* lower 32 bits of bw */

	__u32	bbr_bw_hi;		/* upper 32 bits of bw */

	__u32	bbr_min_rtt;		/* min-filtered RTT in uSec */

	__u32	bbr_pacing_gain;	/* pacing gain shifted left 8 bits */

	__u32	bbr_cwnd_gain;		/* cwnd gain shifted left 8 bits */

};

union tcp_cc_info {

	struct tcpvegas_info	vegas;

	struct tcp_dctcp_info	dctcp;

	struct tcp_bbr_info	bbr;

};

#endif /* _INET_DIAG_H_ */