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marks.go
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marks.go
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// Copyright 2021 Antrea Authors
//
// 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 types
const (
// HostLocalSourceBit is the bit of the iptables fwmark space to mark locally generated packets.
// Value must be within the range [0, 31], and should not conflict with bits for other purposes.
HostLocalSourceBit = 31
)
var (
// HostLocalSourceMark is the mark generated from HostLocalSourceBit.
HostLocalSourceMark = uint32(1 << HostLocalSourceBit)
// SNATIPMarkMask is the bits of packet mark that stores the ID of the
// SNAT IP for a "Pod -> external" egress packet, that is to be SNAT'd.
SNATIPMarkMask = uint32(0xFF)
)