081ed44a1d
The new macspoofchk field is added to the bridge plugin to support anti-mac-spoofing. When the parameter is enabled, traffic is limited to the mac addresses of the container interface (the veth peer that is placed in the container ns). Any traffic that exits the pod is checked against the source mac address that is expected. If the mac address is different, the frames are dropped. The implementation is using nftables and should only be used on nodes that support it. Signed-off-by: Edward Haas <edwardh@redhat.com>
83 lines
2.1 KiB
Go
83 lines
2.1 KiB
Go
/*
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* This file is part of the go-nft project
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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* Copyright 2021 Red Hat, Inc.
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*
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*/
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package nft
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import (
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"github.com/networkplumbing/go-nft/nft/schema"
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)
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type ChainType string
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type ChainHook string
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type ChainPolicy string
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// Chain Types
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const (
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TypeFilter ChainType = schema.TypeFilter
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TypeNAT ChainType = schema.TypeNAT
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TypeRoute ChainType = schema.TypeRoute
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)
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// Chain Hooks
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const (
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HookPreRouting ChainHook = schema.HookPreRouting
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HookInput ChainHook = schema.HookInput
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HookOutput ChainHook = schema.HookOutput
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HookForward ChainHook = schema.HookForward
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HookPostRouting ChainHook = schema.HookPostRouting
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HookIngress ChainHook = schema.HookIngress
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)
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// Chain Policies
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const (
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PolicyAccept ChainPolicy = schema.PolicyAccept
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PolicyDrop ChainPolicy = schema.PolicyDrop
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)
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// NewRegularChain returns a new schema chain structure for a regular chain.
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func NewRegularChain(table *schema.Table, name string) *schema.Chain {
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return NewChain(table, name, nil, nil, nil, nil)
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}
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// NewChain returns a new schema chain structure for a base chain.
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// For base chains, all arguments are required except the policy.
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// Missing arguments will cause an error once the config is applied.
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func NewChain(table *schema.Table, name string, ctype *ChainType, hook *ChainHook, prio *int, policy *ChainPolicy) *schema.Chain {
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c := &schema.Chain{
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Family: table.Family,
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Table: table.Name,
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Name: name,
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}
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if ctype != nil {
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c.Type = string(*ctype)
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}
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if hook != nil {
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c.Hook = string(*hook)
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}
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if prio != nil {
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c.Prio = prio
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}
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if policy != nil {
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c.Policy = string(*policy)
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}
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return c
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}
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