include/uapi/linux/inet_diag.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _UAPI_INET_DIAG_H_
   3 #define _UAPI_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 };
  68
  69 #define INET_DIAG_REQ_MAX INET_DIAG_REQ_BYTECODE
  70
  71 /* Bytecode is sequence of 4 byte commands followed by variable arguments.
  72  * All the commands identified by "code" are conditional jumps forward:
  73  * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
  74  * length of the command and its arguments.
  75  */
  76
  77 struct inet_diag_bc_op {
  78         unsigned char   code;
  79         unsigned char   yes;
  80         unsigned short  no;
  81 };
  82
  83 enum {
  84         INET_DIAG_BC_NOP,
  85         INET_DIAG_BC_JMP,
  86         INET_DIAG_BC_S_GE,
  87         INET_DIAG_BC_S_LE,
  88         INET_DIAG_BC_D_GE,
  89         INET_DIAG_BC_D_LE,
  90         INET_DIAG_BC_AUTO,
  91         INET_DIAG_BC_S_COND,
  92         INET_DIAG_BC_D_COND,
  93         INET_DIAG_BC_DEV_COND,   /* u32 ifindex */
  94         INET_DIAG_BC_MARK_COND,
  95 };
  96
  97 struct inet_diag_hostcond {
  98         __u8    family;
  99         __u8    prefix_len;
 100         int     port;
 101         __be32  addr[0];
 102 };
 103
 104 struct inet_diag_markcond {
 105         __u32 mark;
 106         __u32 mask;
 107 };
 108
 109 /* Base info structure. It contains socket identity (addrs/ports/cookie)
 110  * and, alas, the information shown by netstat. */
 111 struct inet_diag_msg {
 112         __u8    idiag_family;
 113         __u8    idiag_state;
 114         __u8    idiag_timer;
 115         __u8    idiag_retrans;
 116
 117         struct inet_diag_sockid id;
 118
 119         __u32   idiag_expires;
 120         __u32   idiag_rqueue;
 121         __u32   idiag_wqueue;
 122         __u32   idiag_uid;
 123         __u32   idiag_inode;
 124 };
 125
 126 /* Extensions */
 127
 128 enum {
 129         INET_DIAG_NONE,
 130         INET_DIAG_MEMINFO,
 131         INET_DIAG_INFO,
 132         INET_DIAG_VEGASINFO,
 133         INET_DIAG_CONG,
 134         INET_DIAG_TOS,
 135         INET_DIAG_TCLASS,
 136         INET_DIAG_SKMEMINFO,
 137         INET_DIAG_SHUTDOWN,
 138
 139         /*
 140          * Next extenstions cannot be requested in struct inet_diag_req_v2:
 141          * its field idiag_ext has only 8 bits.
 142          */
 143
 144         INET_DIAG_DCTCPINFO,    /* request as INET_DIAG_VEGASINFO */
 145         INET_DIAG_PROTOCOL,     /* response attribute only */
 146         INET_DIAG_SKV6ONLY,
 147         INET_DIAG_LOCALS,
 148         INET_DIAG_PEERS,
 149         INET_DIAG_PAD,
 150         INET_DIAG_MARK,         /* only with CAP_NET_ADMIN */
 151         INET_DIAG_BBRINFO,      /* request as INET_DIAG_VEGASINFO */
 152         INET_DIAG_CLASS_ID,     /* request as INET_DIAG_TCLASS */
 153         INET_DIAG_MD5SIG,
 154         __INET_DIAG_MAX,
 155 };
 156
 157 #define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
 158
 159 /* INET_DIAG_MEM */
 160
 161 struct inet_diag_meminfo {
 162         __u32   idiag_rmem;
 163         __u32   idiag_wmem;
 164         __u32   idiag_fmem;
 165         __u32   idiag_tmem;
 166 };
 167
 168 /* INET_DIAG_VEGASINFO */
 169
 170 struct tcpvegas_info {
 171         __u32   tcpv_enabled;
 172         __u32   tcpv_rttcnt;
 173         __u32   tcpv_rtt;
 174         __u32   tcpv_minrtt;
 175 };
 176
 177 /* INET_DIAG_DCTCPINFO */
 178
 179 struct tcp_dctcp_info {
 180         __u16   dctcp_enabled;
 181         __u16   dctcp_ce_state;
 182         __u32   dctcp_alpha;
 183         __u32   dctcp_ab_ecn;
 184         __u32   dctcp_ab_tot;
 185 };
 186
 187 /* INET_DIAG_BBRINFO */
 188
 189 struct tcp_bbr_info {
 190         /* u64 bw: max-filtered BW (app throughput) estimate in Byte per sec: */
 191         __u32   bbr_bw_lo;              /* lower 32 bits of bw */
 192         __u32   bbr_bw_hi;              /* upper 32 bits of bw */
 193         __u32   bbr_min_rtt;            /* min-filtered RTT in uSec */
 194         __u32   bbr_pacing_gain;        /* pacing gain shifted left 8 bits */
 195         __u32   bbr_cwnd_gain;          /* cwnd gain shifted left 8 bits */
 196 };
 197
 198 union tcp_cc_info {
 199         struct tcpvegas_info    vegas;
 200         struct tcp_dctcp_info   dctcp;
 201         struct tcp_bbr_info     bbr;
 202 };
 203 #endif /* _UAPI_INET_DIAG_H_ */