include/uapi/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_MAX,
  69 };
  70
  71 #define INET_DIAG_REQ_MAX (__INET_DIAG_REQ_MAX - 1)
  72
  73 /* Bytecode is sequence of 4 byte commands followed by variable arguments.
  74  * All the commands identified by "code" are conditional jumps forward:
  75  * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
  76  * length of the command and its arguments.
  77  */
  78
  79 struct inet_diag_bc_op {
  80         unsigned char   code;
  81         unsigned char   yes;
  82         unsigned short  no;
  83 };
  84
  85 enum {
  86         INET_DIAG_BC_NOP,
  87         INET_DIAG_BC_JMP,
  88         INET_DIAG_BC_S_GE,
  89         INET_DIAG_BC_S_LE,
  90         INET_DIAG_BC_D_GE,
  91         INET_DIAG_BC_D_LE,
  92         INET_DIAG_BC_AUTO,
  93         INET_DIAG_BC_S_COND,
  94         INET_DIAG_BC_D_COND,
  95         INET_DIAG_BC_DEV_COND,   /* u32 ifindex */
  96         INET_DIAG_BC_MARK_COND,
  97         INET_DIAG_BC_S_EQ,
  98         INET_DIAG_BC_D_EQ,
  99         INET_DIAG_BC_CGROUP_COND,   /* u64 cgroup v2 ID */
 100 };
 101
 102 struct inet_diag_hostcond {
 103         __u8    family;
 104         __u8    prefix_len;
 105         int     port;
 106         __be32  addr[0];
 107 };
 108
 109 struct inet_diag_markcond {
 110         __u32 mark;
 111         __u32 mask;
 112 };
 113
 114 /* Base info structure. It contains socket identity (addrs/ports/cookie)
 115  * and, alas, the information shown by netstat. */
 116 struct inet_diag_msg {
 117         __u8    idiag_family;
 118         __u8    idiag_state;
 119         __u8    idiag_timer;
 120         __u8    idiag_retrans;
 121
 122         struct inet_diag_sockid id;
 123
 124         __u32   idiag_expires;
 125         __u32   idiag_rqueue;
 126         __u32   idiag_wqueue;
 127         __u32   idiag_uid;
 128         __u32   idiag_inode;
 129 };
 130
 131 /* Extensions */
 132
 133 enum {
 134         INET_DIAG_NONE,
 135         INET_DIAG_MEMINFO,
 136         INET_DIAG_INFO,
 137         INET_DIAG_VEGASINFO,
 138         INET_DIAG_CONG,
 139         INET_DIAG_TOS,
 140         INET_DIAG_TCLASS,
 141         INET_DIAG_SKMEMINFO,
 142         INET_DIAG_SHUTDOWN,
 143
 144         /*
 145          * Next extenstions cannot be requested in struct inet_diag_req_v2:
 146          * its field idiag_ext has only 8 bits.
 147          */
 148
 149         INET_DIAG_DCTCPINFO,    /* request as INET_DIAG_VEGASINFO */
 150         INET_DIAG_PROTOCOL,     /* response attribute only */
 151         INET_DIAG_SKV6ONLY,
 152         INET_DIAG_LOCALS,
 153         INET_DIAG_PEERS,
 154         INET_DIAG_PAD,
 155         INET_DIAG_MARK,         /* only with CAP_NET_ADMIN */
 156         INET_DIAG_BBRINFO,      /* request as INET_DIAG_VEGASINFO */
 157         INET_DIAG_CLASS_ID,     /* request as INET_DIAG_TCLASS */
 158         INET_DIAG_MD5SIG,
 159         INET_DIAG_ULP_INFO,
 160         INET_DIAG_SK_BPF_STORAGES,
 161         INET_DIAG_CGROUP_ID,
 162         __INET_DIAG_MAX,
 163 };
 164
 165 #define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
 166
 167 enum {
 168         INET_ULP_INFO_UNSPEC,
 169         INET_ULP_INFO_NAME,
 170         INET_ULP_INFO_TLS,
 171         INET_ULP_INFO_MPTCP,
 172         __INET_ULP_INFO_MAX,
 173 };
 174 #define INET_ULP_INFO_MAX (__INET_ULP_INFO_MAX - 1)
 175
 176 /* INET_DIAG_MEM */
 177
 178 struct inet_diag_meminfo {
 179         __u32   idiag_rmem;
 180         __u32   idiag_wmem;
 181         __u32   idiag_fmem;
 182         __u32   idiag_tmem;
 183 };
 184
 185 /* INET_DIAG_VEGASINFO */
 186
 187 struct tcpvegas_info {
 188         __u32   tcpv_enabled;
 189         __u32   tcpv_rttcnt;
 190         __u32   tcpv_rtt;
 191         __u32   tcpv_minrtt;
 192 };
 193
 194 /* INET_DIAG_DCTCPINFO */
 195
 196 struct tcp_dctcp_info {
 197         __u16   dctcp_enabled;
 198         __u16   dctcp_ce_state;
 199         __u32   dctcp_alpha;
 200         __u32   dctcp_ab_ecn;
 201         __u32   dctcp_ab_tot;
 202 };
 203
 204 /* INET_DIAG_BBRINFO */
 205
 206 struct tcp_bbr_info {
 207         /* u64 bw: max-filtered BW (app throughput) estimate in Byte per sec: */
 208         __u32   bbr_bw_lo;              /* lower 32 bits of bw */
 209         __u32   bbr_bw_hi;              /* upper 32 bits of bw */
 210         __u32   bbr_min_rtt;            /* min-filtered RTT in uSec */
 211         __u32   bbr_pacing_gain;        /* pacing gain shifted left 8 bits */
 212         __u32   bbr_cwnd_gain;          /* cwnd gain shifted left 8 bits */
 213 };
 214
 215 union tcp_cc_info {
 216         struct tcpvegas_info    vegas;
 217         struct tcp_dctcp_info   dctcp;
 218         struct tcp_bbr_info     bbr;
 219 };
 220 #endif /* _INET_DIAG_H_ */