summaryrefslogtreecommitdiffstats
path: root/vendor/github.com/prometheus/procfs/xfrm.go
blob: ffe9df50d6c6fbd7f87ce9e3f87950e9d2451a9f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
// Copyright 2017 Prometheus Team
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package procfs

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

// XfrmStat models the contents of /proc/net/xfrm_stat.
type XfrmStat struct {
	// All errors which are not matched by other
	XfrmInError int
	// No buffer is left
	XfrmInBufferError int
	// Header Error
	XfrmInHdrError int
	// No state found
	// i.e. either inbound SPI, address, or IPSEC protocol at SA is wrong
	XfrmInNoStates int
	// Transformation protocol specific error
	// e.g. SA Key is wrong
	XfrmInStateProtoError int
	// Transformation mode specific error
	XfrmInStateModeError int
	// Sequence error
	// e.g. sequence number is out of window
	XfrmInStateSeqError int
	// State is expired
	XfrmInStateExpired int
	// State has mismatch option
	// e.g. UDP encapsulation type is mismatched
	XfrmInStateMismatch int
	// State is invalid
	XfrmInStateInvalid int
	// No matching template for states
	// e.g. Inbound SAs are correct but SP rule is wrong
	XfrmInTmplMismatch int
	// No policy is found for states
	// e.g. Inbound SAs are correct but no SP is found
	XfrmInNoPols int
	// Policy discards
	XfrmInPolBlock int
	// Policy error
	XfrmInPolError int
	// All errors which are not matched by others
	XfrmOutError int
	// Bundle generation error
	XfrmOutBundleGenError int
	// Bundle check error
	XfrmOutBundleCheckError int
	// No state was found
	XfrmOutNoStates int
	// Transformation protocol specific error
	XfrmOutStateProtoError int
	// Transportation mode specific error
	XfrmOutStateModeError int
	// Sequence error
	// i.e sequence number overflow
	XfrmOutStateSeqError int
	// State is expired
	XfrmOutStateExpired int
	// Policy discads
	XfrmOutPolBlock int
	// Policy is dead
	XfrmOutPolDead int
	// Policy Error
	XfrmOutPolError     int
	XfrmFwdHdrError     int
	XfrmOutStateInvalid int
	XfrmAcquireError    int
}

// NewXfrmStat reads the xfrm_stat statistics.
func NewXfrmStat() (XfrmStat, error) {
	fs, err := NewFS(DefaultMountPoint)
	if err != nil {
		return XfrmStat{}, err
	}

	return fs.NewXfrmStat()
}

// NewXfrmStat reads the xfrm_stat statistics from the 'proc' filesystem.
func (fs FS) NewXfrmStat() (XfrmStat, error) {
	file, err := os.Open(fs.Path("net/xfrm_stat"))
	if err != nil {
		return XfrmStat{}, err
	}
	defer file.Close()

	var (
		x = XfrmStat{}
		s = bufio.NewScanner(file)
	)

	for s.Scan() {
		fields := strings.Fields(s.Text())

		if len(fields) != 2 {
			return XfrmStat{}, fmt.Errorf(
				"couldnt parse %s line %s", file.Name(), s.Text())
		}

		name := fields[0]
		value, err := strconv.Atoi(fields[1])
		if err != nil {
			return XfrmStat{}, err
		}

		switch name {
		case "XfrmInError":
			x.XfrmInError = value
		case "XfrmInBufferError":
			x.XfrmInBufferError = value
		case "XfrmInHdrError":
			x.XfrmInHdrError = value
		case "XfrmInNoStates":
			x.XfrmInNoStates = value
		case "XfrmInStateProtoError":
			x.XfrmInStateProtoError = value
		case "XfrmInStateModeError":
			x.XfrmInStateModeError = value
		case "XfrmInStateSeqError":
			x.XfrmInStateSeqError = value
		case "XfrmInStateExpired":
			x.XfrmInStateExpired = value
		case "XfrmInStateInvalid":
			x.XfrmInStateInvalid = value
		case "XfrmInTmplMismatch":
			x.XfrmInTmplMismatch = value
		case "XfrmInNoPols":
			x.XfrmInNoPols = value
		case "XfrmInPolBlock":
			x.XfrmInPolBlock = value
		case "XfrmInPolError":
			x.XfrmInPolError = value
		case "XfrmOutError":
			x.XfrmOutError = value
		case "XfrmInStateMismatch":
			x.XfrmInStateMismatch = value
		case "XfrmOutBundleGenError":
			x.XfrmOutBundleGenError = value
		case "XfrmOutBundleCheckError":
			x.XfrmOutBundleCheckError = value
		case "XfrmOutNoStates":
			x.XfrmOutNoStates = value
		case "XfrmOutStateProtoError":
			x.XfrmOutStateProtoError = value
		case "XfrmOutStateModeError":
			x.XfrmOutStateModeError = value
		case "XfrmOutStateSeqError":
			x.XfrmOutStateSeqError = value
		case "XfrmOutStateExpired":
			x.XfrmOutStateExpired = value
		case "XfrmOutPolBlock":
			x.XfrmOutPolBlock = value
		case "XfrmOutPolDead":
			x.XfrmOutPolDead = value
		case "XfrmOutPolError":
			x.XfrmOutPolError = value
		case "XfrmFwdHdrError":
			x.XfrmFwdHdrError = value
		case "XfrmOutStateInvalid":
			x.XfrmOutStateInvalid = value
		case "XfrmAcquireError":
			x.XfrmAcquireError = value
		}

	}

	return x, s.Err()
}