forked from cilium/cilium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
bpf_ipcache_list.go
74 lines (64 loc) · 2.33 KB
/
bpf_ipcache_list.go
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
// Copyright 2018 Authors of Cilium
//
// 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 cmd
import (
"fmt"
"os"
"github.com/cilium/cilium/pkg/command"
"github.com/cilium/cilium/pkg/common"
"github.com/cilium/cilium/pkg/maps/ipcache"
"github.com/spf13/cobra"
)
const (
ipAddrTitle = "IP PREFIX/ADDRESS"
identityTitle = "IDENTITY"
ipCacheListUsage = "List endpoint IPs (local and remote) and their corresponding security identities.\n" + kernelVersionWarning
kernelVersionWarning = `
Note that for Linux kernel versions between 4.11 and 4.15 inclusive, the native
LPM map type used for implementing the IPCache does not provide the ability to
walk / dump the entries, so on these kernel versions this tool will never
return any entries, even if entries exist in the map. You may instead run:
cilium map get cilium_ipcache
`
)
var bpfIPCacheListCmd = &cobra.Command{
Use: "list",
Aliases: []string{"ls"},
Short: "List endpoint IPs (local and remote) and their corresponding security identities",
Long: ipCacheListUsage,
Run: func(cmd *cobra.Command, args []string) {
common.RequireRootPrivilege("cilium bpf ipcache list")
bpfIPCacheList := make(map[string][]string)
if err := ipcache.IPCache.Dump(bpfIPCacheList); err != nil {
fmt.Fprintf(os.Stderr, "error dumping contents of map: %s\n", err)
os.Exit(1)
}
if command.OutputJSON() {
if err := command.PrintOutput(bpfIPCacheList); err != nil {
fmt.Fprintf(os.Stderr, "error getting output of map in JSON: %s\n", err)
os.Exit(1)
}
return
}
if len(bpfIPCacheList) == 0 {
fmt.Fprintf(os.Stderr, "No entries found.\n%v\n", kernelVersionWarning)
} else {
TablePrinter(ipAddrTitle, identityTitle, bpfIPCacheList)
}
},
}
func init() {
bpfIPCacheCmd.AddCommand(bpfIPCacheListCmd)
command.AddJSONOutput(bpfIPCacheListCmd)
}