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 }; 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 INET_DIAG_BC_S_EQ, 96 INET_DIAG_BC_D_EQ, 97 }; 98 99 struct inet_diag_hostcond { 100 __u8 family; 101 __u8 prefix_len; 102 int port; 103 __be32 addr[0]; 104 }; 105 106 struct inet_diag_markcond { 107 __u32 mark; 108 __u32 mask; 109 }; 110 111 /* Base info structure. It contains socket identity (addrs/ports/cookie) 112 * and, alas, the information shown by netstat. */ 113 struct inet_diag_msg { 114 __u8 idiag_family; 115 __u8 idiag_state; 116 __u8 idiag_timer; 117 __u8 idiag_retrans; 118 119 struct inet_diag_sockid id; 120 121 __u32 idiag_expires; 122 __u32 idiag_rqueue; 123 __u32 idiag_wqueue; 124 __u32 idiag_uid; 125 __u32 idiag_inode; 126 }; 127 128 /* Extensions */ 129 130 enum { 131 INET_DIAG_NONE, 132 INET_DIAG_MEMINFO, 133 INET_DIAG_INFO, 134 INET_DIAG_VEGASINFO, 135 INET_DIAG_CONG, 136 INET_DIAG_TOS, 137 INET_DIAG_TCLASS, 138 INET_DIAG_SKMEMINFO, 139 INET_DIAG_SHUTDOWN, 140 141 /* 142 * Next extenstions cannot be requested in struct inet_diag_req_v2: 143 * its field idiag_ext has only 8 bits. 144 */ 145 146 INET_DIAG_DCTCPINFO, /* request as INET_DIAG_VEGASINFO */ 147 INET_DIAG_PROTOCOL, /* response attribute only */ 148 INET_DIAG_SKV6ONLY, 149 INET_DIAG_LOCALS, 150 INET_DIAG_PEERS, 151 INET_DIAG_PAD, 152 INET_DIAG_MARK, /* only with CAP_NET_ADMIN */ 153 INET_DIAG_BBRINFO, /* request as INET_DIAG_VEGASINFO */ 154 INET_DIAG_CLASS_ID, /* request as INET_DIAG_TCLASS */ 155 INET_DIAG_MD5SIG, 156 __INET_DIAG_MAX, 157 }; 158 159 #define INET_DIAG_MAX (__INET_DIAG_MAX - 1) 160 161 /* INET_DIAG_MEM */ 162 163 struct inet_diag_meminfo { 164 __u32 idiag_rmem; 165 __u32 idiag_wmem; 166 __u32 idiag_fmem; 167 __u32 idiag_tmem; 168 }; 169 170 /* INET_DIAG_VEGASINFO */ 171 172 struct tcpvegas_info { 173 __u32 tcpv_enabled; 174 __u32 tcpv_rttcnt; 175 __u32 tcpv_rtt; 176 __u32 tcpv_minrtt; 177 }; 178 179 /* INET_DIAG_DCTCPINFO */ 180 181 struct tcp_dctcp_info { 182 __u16 dctcp_enabled; 183 __u16 dctcp_ce_state; 184 __u32 dctcp_alpha; 185 __u32 dctcp_ab_ecn; 186 __u32 dctcp_ab_tot; 187 }; 188 189 /* INET_DIAG_BBRINFO */ 190 191 struct tcp_bbr_info { 192 /* u64 bw: max-filtered BW (app throughput) estimate in Byte per sec: */ 193 __u32 bbr_bw_lo; /* lower 32 bits of bw */ 194 __u32 bbr_bw_hi; /* upper 32 bits of bw */ 195 __u32 bbr_min_rtt; /* min-filtered RTT in uSec */ 196 __u32 bbr_pacing_gain; /* pacing gain shifted left 8 bits */ 197 __u32 bbr_cwnd_gain; /* cwnd gain shifted left 8 bits */ 198 }; 199 200 union tcp_cc_info { 201 struct tcpvegas_info vegas; 202 struct tcp_dctcp_info dctcp; 203 struct tcp_bbr_info bbr; 204 }; 205 #endif /* _INET_DIAG_H_ */ 206