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ad79e479c2
This has been replaced by `//build:...` for a long time now.
Removal of the old build tag was automated with:
for i in $(git grep -l '^// +build' | grep -v -e '^vendor/'); do if ! grep -q '^// Code generated' "$i"; then sed -i -e '/^\/\/ +build/d' "$i"; fi; done
79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
//go:build linux
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/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package conntrack
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import (
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"sync"
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"github.com/vishvananda/netlink"
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)
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// NewFake creates a new FakeInterface
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func NewFake() Interface {
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return newConntracker(
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&fakeHandler{
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entries: make([]*netlink.ConntrackFlow, 0),
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},
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)
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}
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var _ netlinkHandler = (*fakeHandler)(nil)
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type fakeHandler struct {
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mu sync.Mutex
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entries []*netlink.ConntrackFlow
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netlinkRequests int // try to get the estimated number of netlink request
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}
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func (f *fakeHandler) ConntrackTableList(_ netlink.ConntrackTableType, _ netlink.InetFamily) ([]*netlink.ConntrackFlow, error) {
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f.mu.Lock()
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defer f.mu.Unlock()
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f.netlinkRequests++
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return f.entries, nil
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}
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func (f *fakeHandler) ConntrackDeleteFilters(tableType netlink.ConntrackTableType, family netlink.InetFamily, netlinkFilters ...netlink.CustomConntrackFilter) (uint, error) {
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f.mu.Lock()
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defer f.mu.Unlock()
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// 1 netlink request to dump the table
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// https://github.com/vishvananda/netlink/blob/0af32151e72b990c271ef6268e8aadb7e015f2bd/conntrack_linux.go#L163
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f.netlinkRequests++
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var dataplaneFlows []*netlink.ConntrackFlow
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before := len(f.entries)
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for _, flow := range f.entries {
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var matched bool
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for _, filter := range netlinkFilters {
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matched = filter.MatchConntrackFlow(flow)
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if matched {
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// 1 netlink request to delete the flow
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// https://github.com/vishvananda/netlink/blob/0af32151e72b990c271ef6268e8aadb7e015f2bd/conntrack_linux.go#L182
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f.netlinkRequests++
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}
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}
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// no filter matched, keep the flow
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if !matched {
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dataplaneFlows = append(dataplaneFlows, flow)
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}
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}
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f.entries = dataplaneFlows
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return uint(before - len(f.entries)), nil
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}
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