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         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 extensions 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 /* _UAPI_INET_DIAG_H_ */