1 /*
2 * Copyright 2014 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.channel.epoll;
17
18 /**
19 * <p>
20 * struct tcp_info
21 * {
22 * __u8 tcpi_state;
23 * __u8 tcpi_ca_state;
24 * __u8 tcpi_retransmits;
25 * __u8 tcpi_probes;
26 * __u8 tcpi_backoff;
27 * __u8 tcpi_options;
28 * __u8 tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
29 *
30 * __u32 tcpi_rto;
31 * __u32 tcpi_ato;
32 * __u32 tcpi_snd_mss;
33 * __u32 tcpi_rcv_mss;
34 *
35 * __u32 tcpi_unacked;
36 * __u32 tcpi_sacked;
37 * __u32 tcpi_lost;
38 * __u32 tcpi_retrans;
39 * __u32 tcpi_fackets;
40 *
41 * __u32 tcpi_last_data_sent;
42 * __u32 tcpi_last_ack_sent;
43 * __u32 tcpi_last_data_recv;
44 * __u32 tcpi_last_ack_recv;
45 *
46 * __u32 tcpi_pmtu;
47 * __u32 tcpi_rcv_ssthresh;
48 * __u32 tcpi_rtt;
49 * __u32 tcpi_rttvar;
50 * __u32 tcpi_snd_ssthresh;
51 * __u32 tcpi_snd_cwnd;
52 * __u32 tcpi_advmss;
53 * __u32 tcpi_reordering;
54 *
55 * __u32 tcpi_rcv_rtt;
56 * __u32 tcpi_rcv_space;
57 *
58 * __u32 tcpi_total_retrans;
59 * };
60 * </p>
61 */
62 public final class EpollTcpInfo {
63
64 final long[] info = new long[32];
65
66 public int state() {
67 return (int) info[0];
68 }
69
70 public int caState() {
71 return (int) info[1];
72 }
73
74 public int retransmits() {
75 return (int) info[2];
76 }
77
78 public int probes() {
79 return (int) info[3];
80 }
81
82 public int backoff() {
83 return (int) info[4];
84 }
85
86 public int options() {
87 return (int) info[5];
88 }
89
90 public int sndWscale() {
91 return (int) info[6];
92 }
93
94 public int rcvWscale() {
95 return (int) info[7];
96 }
97
98 public long rto() {
99 return info[8];
100 }
101
102 public long ato() {
103 return info[9];
104 }
105
106 public long sndMss() {
107 return info[10];
108 }
109
110 public long rcvMss() {
111 return info[11];
112 }
113
114 public long unacked() {
115 return info[12];
116 }
117
118 public long sacked() {
119 return info[13];
120 }
121
122 public long lost() {
123 return info[14];
124 }
125
126 public long retrans() {
127 return info[15];
128 }
129
130 public long fackets() {
131 return info[16];
132 }
133
134 public long lastDataSent() {
135 return info[17];
136 }
137
138 public long lastAckSent() {
139 return info[18];
140 }
141
142 public long lastDataRecv() {
143 return info[19];
144 }
145
146 public long lastAckRecv() {
147 return info[20];
148 }
149
150 public long pmtu() {
151 return info[21];
152 }
153
154 public long rcvSsthresh() {
155 return info[22];
156 }
157
158 public long rtt() {
159 return info[23];
160 }
161
162 public long rttvar() {
163 return info[24];
164 }
165
166 public long sndSsthresh() {
167 return info[25];
168 }
169
170 public long sndCwnd() {
171 return info[26];
172 }
173
174 public long advmss() {
175 return info[27];
176 }
177
178 public long reordering() {
179 return info[28];
180 }
181
182 public long rcvRtt() {
183 return info[29];
184 }
185
186 public long rcvSpace() {
187 return info[30];
188 }
189
190 public long totalRetrans() {
191 return info[31];
192 }
193 }
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