The C and C++ Include Header Files

/usr/include/linux/inet_diag.h


$ cat -n /usr/include/linux/inet_diag.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	#ifndef _INET_DIAG_H_
     3	#define _INET_DIAG_H_
     4	
     5	#include <linux/types.h>
     6	
     7	/* Just some random number */
     8	#define TCPDIAG_GETSOCK 18
     9	#define DCCPDIAG_GETSOCK 19
    10	
    11	#define INET_DIAG_GETSOCK_MAX 24
    12	
    13	/* Socket identity */
    14	struct inet_diag_sockid {
    15		__be16	idiag_sport;
    16		__be16	idiag_dport;
    17		__be32	idiag_src[4];
    18		__be32	idiag_dst[4];
    19		__u32	idiag_if;
    20		__u32	idiag_cookie[2];
    21	#define INET_DIAG_NOCOOKIE (~0U)
    22	};
    23	
    24	/* Request structure */
    25	
    26	struct inet_diag_req {
    27		__u8	idiag_family;		/* Family of addresses. */
    28		__u8	idiag_src_len;
    29		__u8	idiag_dst_len;
    30		__u8	idiag_ext;		/* Query extended information */
    31	
    32		struct inet_diag_sockid id;
    33	
    34		__u32	idiag_states;		/* States to dump */
    35		__u32	idiag_dbs;		/* Tables to dump (NI) */
    36	};
    37	
    38	struct inet_diag_req_v2 {
    39		__u8	sdiag_family;
    40		__u8	sdiag_protocol;
    41		__u8	idiag_ext;
    42		__u8	pad;
    43		__u32	idiag_states;
    44		struct inet_diag_sockid id;
    45	};
    46	
    47	/*
    48	 * SOCK_RAW sockets require the underlied protocol to be
    49	 * additionally specified so we can use @pad member for
    50	 * this, but we can't rename it because userspace programs
    51	 * still may depend on this name. Instead lets use another
    52	 * structure definition as an alias for struct
    53	 * @inet_diag_req_v2.
    54	 */
    55	struct inet_diag_req_raw {
    56		__u8	sdiag_family;
    57		__u8	sdiag_protocol;
    58		__u8	idiag_ext;
    59		__u8	sdiag_raw_protocol;
    60		__u32	idiag_states;
    61		struct inet_diag_sockid id;
    62	};
    63	
    64	enum {
    65		INET_DIAG_REQ_NONE,
    66		INET_DIAG_REQ_BYTECODE,
    67		INET_DIAG_REQ_SK_BPF_STORAGES,
    68		INET_DIAG_REQ_PROTOCOL,
    69		__INET_DIAG_REQ_MAX,
    70	};
    71	
    72	#define INET_DIAG_REQ_MAX (__INET_DIAG_REQ_MAX - 1)
    73	
    74	/* Bytecode is sequence of 4 byte commands followed by variable arguments.
    75	 * All the commands identified by "code" are conditional jumps forward:
    76	 * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
    77	 * length of the command and its arguments.
    78	 */
    79	 
    80	struct inet_diag_bc_op {
    81		unsigned char	code;
    82		unsigned char	yes;
    83		unsigned short	no;
    84	};
    85	
    86	enum {
    87		INET_DIAG_BC_NOP,
    88		INET_DIAG_BC_JMP,
    89		INET_DIAG_BC_S_GE,
    90		INET_DIAG_BC_S_LE,
    91		INET_DIAG_BC_D_GE,
    92		INET_DIAG_BC_D_LE,
    93		INET_DIAG_BC_AUTO,
    94		INET_DIAG_BC_S_COND,
    95		INET_DIAG_BC_D_COND,
    96		INET_DIAG_BC_DEV_COND,   /* u32 ifindex */
    97		INET_DIAG_BC_MARK_COND,
    98		INET_DIAG_BC_S_EQ,
    99		INET_DIAG_BC_D_EQ,
   100		INET_DIAG_BC_CGROUP_COND,   /* u64 cgroup v2 ID */
   101	};
   102	
   103	struct inet_diag_hostcond {
   104		__u8	family;
   105		__u8	prefix_len;
   106		int	port;
   107		__be32	addr[];
   108	};
   109	
   110	struct inet_diag_markcond {
   111		__u32 mark;
   112		__u32 mask;
   113	};
   114	
   115	/* Base info structure. It contains socket identity (addrs/ports/cookie)
   116	 * and, alas, the information shown by netstat. */
   117	struct inet_diag_msg {
   118		__u8	idiag_family;
   119		__u8	idiag_state;
   120		__u8	idiag_timer;
   121		__u8	idiag_retrans;
   122	
   123		struct inet_diag_sockid id;
   124	
   125		__u32	idiag_expires;
   126		__u32	idiag_rqueue;
   127		__u32	idiag_wqueue;
   128		__u32	idiag_uid;
   129		__u32	idiag_inode;
   130	};
   131	
   132	/* Extensions */
   133	
   134	enum {
   135		INET_DIAG_NONE,
   136		INET_DIAG_MEMINFO,
   137		INET_DIAG_INFO,
   138		INET_DIAG_VEGASINFO,
   139		INET_DIAG_CONG,
   140		INET_DIAG_TOS,
   141		INET_DIAG_TCLASS,
   142		INET_DIAG_SKMEMINFO,
   143		INET_DIAG_SHUTDOWN,
   144	
   145		/*
   146		 * Next extenstions cannot be requested in struct inet_diag_req_v2:
   147		 * its field idiag_ext has only 8 bits.
   148		 */
   149	
   150		INET_DIAG_DCTCPINFO,	/* request as INET_DIAG_VEGASINFO */
   151		INET_DIAG_PROTOCOL,	/* response attribute only */
   152		INET_DIAG_SKV6ONLY,
   153		INET_DIAG_LOCALS,
   154		INET_DIAG_PEERS,
   155		INET_DIAG_PAD,
   156		INET_DIAG_MARK,		/* only with CAP_NET_ADMIN */
   157		INET_DIAG_BBRINFO,	/* request as INET_DIAG_VEGASINFO */
   158		INET_DIAG_CLASS_ID,	/* request as INET_DIAG_TCLASS */
   159		INET_DIAG_MD5SIG,
   160		INET_DIAG_ULP_INFO,
   161		INET_DIAG_SK_BPF_STORAGES,
   162		INET_DIAG_CGROUP_ID,
   163		INET_DIAG_SOCKOPT,
   164		__INET_DIAG_MAX,
   165	};
   166	
   167	#define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
   168	
   169	enum {
   170		INET_ULP_INFO_UNSPEC,
   171		INET_ULP_INFO_NAME,
   172		INET_ULP_INFO_TLS,
   173		INET_ULP_INFO_MPTCP,
   174		__INET_ULP_INFO_MAX,
   175	};
   176	#define INET_ULP_INFO_MAX (__INET_ULP_INFO_MAX - 1)
   177	
   178	/* INET_DIAG_MEM */
   179	
   180	struct inet_diag_meminfo {
   181		__u32	idiag_rmem;
   182		__u32	idiag_wmem;
   183		__u32	idiag_fmem;
   184		__u32	idiag_tmem;
   185	};
   186	
   187	/* INET_DIAG_SOCKOPT */
   188	
   189	struct inet_diag_sockopt {
   190		__u8	recverr:1,
   191			is_icsk:1,
   192			freebind:1,
   193			hdrincl:1,
   194			mc_loop:1,
   195			transparent:1,
   196			mc_all:1,
   197			nodefrag:1;
   198		__u8	bind_address_no_port:1,
   199			recverr_rfc4884:1,
   200			defer_connect:1,
   201			unused:5;
   202	};
   203	
   204	/* INET_DIAG_VEGASINFO */
   205	
   206	struct tcpvegas_info {
   207		__u32	tcpv_enabled;
   208		__u32	tcpv_rttcnt;
   209		__u32	tcpv_rtt;
   210		__u32	tcpv_minrtt;
   211	};
   212	
   213	/* INET_DIAG_DCTCPINFO */
   214	
   215	struct tcp_dctcp_info {
   216		__u16	dctcp_enabled;
   217		__u16	dctcp_ce_state;
   218		__u32	dctcp_alpha;
   219		__u32	dctcp_ab_ecn;
   220		__u32	dctcp_ab_tot;
   221	};
   222	
   223	/* INET_DIAG_BBRINFO */
   224	
   225	struct tcp_bbr_info {
   226		/* u64 bw: max-filtered BW (app throughput) estimate in Byte per sec: */
   227		__u32	bbr_bw_lo;		/* lower 32 bits of bw */
   228		__u32	bbr_bw_hi;		/* upper 32 bits of bw */
   229		__u32	bbr_min_rtt;		/* min-filtered RTT in uSec */
   230		__u32	bbr_pacing_gain;	/* pacing gain shifted left 8 bits */
   231		__u32	bbr_cwnd_gain;		/* cwnd gain shifted left 8 bits */
   232	};
   233	
   234	union tcp_cc_info {
   235		struct tcpvegas_info	vegas;
   236		struct tcp_dctcp_info	dctcp;
   237		struct tcp_bbr_info	bbr;
   238	};
   239	#endif /* _INET_DIAG_H_ */